commit f5f5189fa086719648c73650f4c27799329fa511
Author: inubimambo <jun@suika.cc>
Date:   Sat Jul 5 23:37:31 2025 +0800

    EduCat with Flowise integration - complete implementation

diff --git a/.gitignore b/.gitignore
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+# Environment variables
+.env
+.env.local
+.env.production
+
+# Dependencies
+node_modules/
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Uploads and user data
+uploads/
+data/
+
+# Logs
+logs/
+*.log
+
+# Runtime data
+pids/
+*.pid
+*.seed
+*.pid.lock
+
+# Coverage directory used by tools like istanbul
+coverage/
+
+# nyc test coverage
+.nyc_output
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Optional npm cache directory
+.npm
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+.parcel-cache
+
+# next.js build output
+.next
+
+# nuxt.js build output
+.nuxt
+
+# vuepress build output
+.vuepress/dist
+
+# Serverless directories
+.serverless
+
+# IDE files
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS generated files
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+
+# Temporary files
+tmp/
+temp/
\ No newline at end of file
diff --git a/README.md b/README.md
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--- /dev/null
+++ b/README.md
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+# EduCat - AI-Powered Note Revision Platform
+
+EduCat is a modern web application that helps students improve their study notes using AI. Built with Node.js, Express, and EJS, it features file upload capabilities, AI-powered note revision, and an interactive chatbot.
+
+## Features
+
+- � **User Authentication**: Secure login and registration system
+- �📁 **File Upload**: Upload notes in various formats (PDF, DOC, TXT, images)
+- 🤖 **AI-Powered Revision**: Automatically improve, summarize, and generate study questions
+- 💬 **Interactive Chatbot**: Chat with AI for study assistance
+- 📊 **Dashboard**: Manage and track your uploaded notes
+- 🎨 **Modern UI**: Beautiful, responsive design with Bootstrap
+- 🔗 **Flowise Integration**: Connected to Flowise at https://flowise.suika.cc/
+
+## Technologies Used
+
+- **Backend**: Node.js, Express.js
+- **Frontend**: EJS templates, Bootstrap 5, Font Awesome
+- **Authentication**: bcrypt for password hashing, express-session
+- **File Handling**: Multer for file uploads
+- **AI Integration**: Flowise API integration
+- **Session Management**: Express Session with flash messages
+- **Styling**: Custom CSS with Bootstrap
+
+## Installation
+
+1. **Clone the repository**:
+   ```bash
+   git clone <repository-url>
+   cd EduCat
+   ```
+
+2. **Install dependencies**:
+   ```bash
+   npm install
+   ```
+
+3. **Configure environment variables**:
+   - Copy `.env.example` to `.env` (if exists) or create a new `.env` file
+   - Update the following variables:
+     ```
+     PORT=3000
+     SESSION_SECRET=your-secret-key-here
+     FLOWISE_API_URL=https://flowise.suika.cc/api/v1/prediction
+     FLOWISE_CHATFLOW_ID=your-chatflow-id-here
+     ```
+
+4. **Set up your Flowise chatflow**:
+   - Go to https://flowise.suika.cc/
+   - Create or find your chatflow
+   - Copy the chatflow ID and update it in the `.env` file
+
+5. **Start the application**:
+   ```bash
+   npm start
+   ```
+   
+   For development with auto-reload:
+   ```bash
+   npm run dev
+   ```
+
+6. **Access the application**:
+   - Open your browser and navigate to `http://localhost:3000`
+
+## Usage
+
+### Authentication
+1. Visit `http://localhost:3000`
+2. Click "Login" or "Register" to create an account
+3. Use demo accounts:
+   - **Admin**: username `admin`, password `password`
+   - **Student**: username `student`, password `password`
+
+### Uploading Notes
+1. After logging in, click "Upload Notes" in the navigation
+2. Drag and drop your file or click to browse
+3. Select a file (PDF, DOC, TXT, or image)
+4. Click "Upload & Process"
+
+### Revising Notes
+1. Go to your Dashboard to see uploaded files
+2. Click "Revise with AI" on any file
+3. Choose revision type:
+   - **Improve & Enhance**: Makes notes more comprehensive
+   - **Summarize**: Creates concise summaries
+   - **Generate Questions**: Creates study questions
+4. Click "Revise with AI" to process
+
+### Using the Chatbot
+1. Navigate to the "Chat" section
+2. Type your questions about study materials or academic topics
+3. Get instant AI-powered responses
+
+## Project Structure
+
+```
+EduCat/
+├── public/
+│   ├── css/
+│   │   └── style.css
+│   ├── js/
+│   │   └── main.js
+│   └── images/
+│       └── logo.png
+├── views/
+│   ├── partials/
+│   │   ├── header.ejs
+│   │   └── footer.ejs
+│   ├── index.ejs
+│   ├── upload.ejs
+│   ├── revise.ejs
+│   ├── chat.ejs
+│   ├── dashboard.ejs
+│   └── error.ejs
+├── uploads/
+├── server.js
+├── package.json
+└── .env
+```
+
+## API Endpoints
+
+- `GET /` - Home page
+- `GET /upload` - File upload page
+- `POST /upload` - Handle file uploads
+- `GET /revise/:fileId` - Note revision page
+- `POST /api/revise` - AI revision endpoint
+- `GET /chat` - Chat interface
+- `POST /api/chat` - Chat API endpoint
+- `GET /dashboard` - User dashboard
+
+## Configuration
+
+### Environment Variables
+
+| Variable | Description | Default |
+|----------|-------------|---------|
+| `PORT` | Server port | `3000` |
+| `SESSION_SECRET` | Session encryption key | `educat-secret-key` |
+| `FLOWISE_API_URL` | Flowise API base URL | `https://flowise.suika.cc/api/v1/prediction` |
+| `FLOWISE_CHATFLOW_ID` | Your Flowise chatflow ID | Required |
+
+### File Upload Settings
+
+- **Maximum file size**: 10MB
+- **Allowed formats**: PDF, DOC, DOCX, TXT, JPG, JPEG, PNG, GIF
+- **Upload directory**: `uploads/`
+
+## Customization
+
+### Styling
+- Edit `public/css/style.css` to customize the appearance
+- The design uses Bootstrap 5 with custom CSS variables
+
+### AI Integration
+- Modify the Flowise API calls in `server.js`
+- Update prompts in the `/api/revise` endpoint
+- Customize chat responses in the `/api/chat` endpoint
+
+### Adding Features
+- Add new routes in `server.js`
+- Create corresponding EJS templates in `views/`
+- Add client-side JavaScript in `public/js/main.js`
+
+## Troubleshooting
+
+### Common Issues
+
+1. **File upload fails**:
+   - Check file size (max 10MB)
+   - Verify file format is supported
+   - Ensure `uploads/` directory exists
+
+2. **AI responses don't work**:
+   - Verify Flowise API URL is correct
+   - Check if your chatflow ID is valid
+   - Ensure Flowise server is accessible
+
+3. **Session issues**:
+   - Verify SESSION_SECRET is set
+   - Check if sessions are properly configured
+
+### Development
+
+To run in development mode with auto-reload:
+```bash
+npm install -g nodemon
+npm run dev
+```
+
+## Contributing
+
+1. Fork the repository
+2. Create a feature branch
+3. Make your changes
+4. Test thoroughly
+5. Submit a pull request
+
+## License
+
+This project is licensed under the MIT License.
+
+## Support
+
+For support or questions, please contact the EduCat development team.
+
+---
+
+**Made with ❤️ by the EduCat Team**
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new file mode 100644
index 0000000..ded8a6b
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+}
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..971155f
--- /dev/null
+++ b/package.json
@@ -0,0 +1,37 @@
+{
+  "name": "educat-ai-notes",
+  "version": "1.0.0",
+  "description": "EduCat - AI-powered note revision platform for students",
+  "main": "server.js",
+  "scripts": {
+    "start": "node --no-deprecation server.js",
+    "dev": "nodemon --no-deprecation server.js"
+  },
+  "dependencies": {
+    "axios": "^1.7.7",
+    "bcrypt": "^5.1.1",
+    "body-parser": "^1.20.2",
+    "connect-flash": "^0.1.1",
+    "cors": "^2.8.5",
+    "dotenv": "^16.4.5",
+    "ejs": "^3.1.10",
+    "express": "^4.19.2",
+    "express-session": "^1.18.0",
+    "form-data": "^4.0.3",
+    "fs-extra": "^11.2.0",
+    "multer": "^2.0.0",
+    "uuid": "^10.0.0"
+  },
+  "devDependencies": {
+    "nodemon": "^3.0.1"
+  },
+  "keywords": [
+    "education",
+    "ai",
+    "notes",
+    "revision",
+    "chatbot"
+  ],
+  "author": "EduCat Team",
+  "license": "MIT"
+}
diff --git a/public/css/style.css b/public/css/style.css
new file mode 100644
index 0000000..5b66cff
--- /dev/null
+++ b/public/css/style.css
@@ -0,0 +1,399 @@
+:root {
+    --primary-color: #007bff;
+    --secondary-color: #6c757d;
+    --success-color: #28a745;
+    --info-color: #17a2b8;
+    --warning-color: #ffc107;
+    --danger-color: #dc3545;
+    --light-color: #f8f9fa;
+    --dark-color: #343a40;
+}
+
+body {
+    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
+    background-color: #f8f9fa;
+}
+
+.hero-section {
+    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
+    min-height: 70vh;
+    display: flex;
+    align-items: center;
+}
+
+.bg-gradient-primary {
+    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
+}
+
+.navbar-brand img {
+    border-radius: 50%;
+}
+
+.upload-dropzone {
+    transition: all 0.3s ease;
+    cursor: pointer;
+}
+
+.upload-dropzone:hover {
+    background-color: #e7f3ff;
+    border-color: #0056b3;
+}
+
+.upload-dropzone.dragover {
+    background-color: #e7f3ff;
+    border-color: #0056b3;
+    transform: scale(1.02);
+}
+
+.feature-icon {
+    font-size: 1.5rem;
+}
+
+.step-number {
+    font-size: 1.2rem;
+    font-weight: bold;
+}
+
+.card {
+    transition: transform 0.3s ease, box-shadow 0.3s ease;
+}
+
+.card:hover {
+    transform: translateY(-5px);
+    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15) !important;
+}
+
+.chat-message {
+    margin-bottom: 1.5rem;
+    opacity: 0;
+    animation: slideInMessage 0.3s ease-out forwards;
+}
+
+@keyframes slideInMessage {
+    from {
+        opacity: 0;
+        transform: translateY(10px);
+    }
+    to {
+        opacity: 1;
+        transform: translateY(0);
+    }
+}
+
+.message-bubble {
+    max-width: 100%;
+    word-wrap: break-word;
+    position: relative;
+    transition: all 0.2s ease;
+}
+
+.message-bubble:hover {
+    transform: translateY(-1px);
+    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1) !important;
+}
+
+.user-message .message-bubble {
+    background: linear-gradient(135deg, var(--primary-color) 0%, #0056b3 100%) !important;
+    color: white;
+    border: none !important;
+}
+
+.bot-message .message-bubble {
+    background-color: #ffffff;
+    border: 1px solid #e9ecef;
+    color: #495057;
+}
+
+.avatar {
+    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
+    transition: all 0.2s ease;
+}
+
+.avatar:hover {
+    transform: scale(1.05);
+    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
+}
+
+.bot-message .avatar {
+    background: linear-gradient(135deg, var(--primary-color) 0%, #0056b3 100%) !important;
+}
+
+.user-message .avatar {
+    background: linear-gradient(135deg, var(--secondary-color) 0%, #495057 100%) !important;
+}
+
+.typing-dots {
+    display: flex;
+    align-items: center;
+    gap: 6px;
+    padding: 8px 0;
+}
+
+.typing-dots span {
+    width: 10px;
+    height: 10px;
+    border-radius: 50%;
+    background: linear-gradient(135deg, var(--primary-color) 0%, #0056b3 100%);
+    animation: typing 1.4s infinite ease-in-out;
+}
+
+.typing-dots span:nth-child(1) {
+    animation-delay: -0.32s;
+}
+
+.typing-dots span:nth-child(2) {
+    animation-delay: -0.16s;
+}
+
+@keyframes typing {
+    0%, 80%, 100% {
+        transform: scale(0.8);
+        opacity: 0.4;
+    }
+    40% {
+        transform: scale(1.2);
+        opacity: 1;
+    }
+}
+
+.file-icon {
+    font-size: 1.2rem;
+}
+
+.progress-bar-animated {
+    animation: progress-bar-stripes 1s linear infinite;
+}
+
+@keyframes progress-bar-stripes {
+    0% {
+        background-position: 1rem 0;
+    }
+    100% {
+        background-position: 0 0;
+    }
+}
+
+.btn {
+    transition: all 0.3s ease;
+}
+
+.btn:hover {
+    transform: translateY(-2px);
+    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
+}
+
+.navbar {
+    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
+}
+
+.footer {
+    margin-top: auto;
+}
+
+/* Responsive adjustments */
+@media (max-width: 768px) {
+    .hero-section {
+        min-height: 50vh;
+        text-align: center;
+    }
+    
+    .hero-section .display-4 {
+        font-size: 2rem;
+    }
+    
+    .message-content {
+        max-width: 85% !important;
+    }
+    
+    .avatar {
+        width: 40px !important;
+        height: 40px !important;
+        min-width: 40px !important;
+    }
+    
+    .avatar i {
+        font-size: 1rem !important;
+    }
+    
+    .message-bubble {
+        padding: 0.75rem !important;
+        font-size: 0.9rem;
+    }
+    
+    .card-body {
+        padding: 1.5rem;
+    }
+    
+    #chat-container {
+        height: 400px !important;
+        padding: 1rem !important;
+    }
+    
+    .chat-message {
+        margin-bottom: 1rem;
+    }
+}
+
+/* Loading spinner */
+.spinner-border {
+    width: 3rem;
+    height: 3rem;
+}
+
+/* Custom scrollbar for chat */
+#chat-container {
+    scrollbar-width: thin;
+    scrollbar-color: #c1c1c1 #f1f1f1;
+}
+
+#chat-container::-webkit-scrollbar {
+    width: 8px;
+}
+
+#chat-container::-webkit-scrollbar-track {
+    background: #f8f9fa;
+    border-radius: 4px;
+}
+
+#chat-container::-webkit-scrollbar-thumb {
+    background: linear-gradient(135deg, #c1c1c1 0%, #a8a8a8 100%);
+    border-radius: 4px;
+}
+
+#chat-container::-webkit-scrollbar-thumb:hover {
+    background: linear-gradient(135deg, #a8a8a8 0%, #888888 100%);
+}
+
+/* File upload styling */
+.upload-area {
+    border: 2px dashed #dee2e6;
+    border-radius: 8px;
+    padding: 2rem;
+    text-align: center;
+    background-color: #f8f9fa;
+    transition: all 0.3s ease;
+}
+
+.upload-area:hover {
+    border-color: var(--primary-color);
+    background-color: #e7f3ff;
+}
+
+.upload-area.dragover {
+    border-color: var(--primary-color);
+    background-color: #e7f3ff;
+    transform: scale(1.02);
+}
+
+/* Success states */
+.upload-success {
+    border-color: var(--success-color);
+    background-color: #d4edda;
+}
+
+/* Error states */
+.upload-error {
+    border-color: var(--danger-color);
+    background-color: #f8d7da;
+}
+
+/* Animation for page transitions */
+.fade-in {
+    animation: fadeIn 0.5s ease-in;
+}
+
+@keyframes fadeIn {
+    from {
+        opacity: 0;
+        transform: translateY(20px);
+    }
+    to {
+        opacity: 1;
+        transform: translateY(0);
+    }
+}
+
+/* Quiz Section Styles */
+.bg-gradient-warning {
+    background: linear-gradient(135deg, #ffc107 0%, #ff9800 100%);
+}
+
+.quiz-preview {
+    animation: float 3s ease-in-out infinite;
+}
+
+@keyframes float {
+    0%, 100% {
+        transform: translateY(0px);
+    }
+    50% {
+        transform: translateY(-10px);
+    }
+}
+
+.quiz-features .fas {
+    font-size: 1.1rem;
+}
+
+.quiz-question {
+    border-left: 4px solid var(--primary-color);
+    padding-left: 1rem;
+}
+
+.quiz-options .form-check-label {
+    cursor: pointer;
+    padding: 0.5rem 0;
+}
+
+.quiz-options .form-check-input:checked + .form-check-label {
+    font-weight: bold;
+    color: var(--success-color);
+}
+
+/* Chat input styling */
+#chat-input {
+    transition: all 0.3s ease;
+    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1) !important;
+}
+
+#chat-input:focus {
+    box-shadow: 0 4px 8px rgba(0, 123, 255, 0.2) !important;
+    border-color: var(--primary-color) !important;
+    transform: translateY(-1px);
+}
+
+#send-btn {
+    background: linear-gradient(135deg, var(--primary-color) 0%, #0056b3 100%);
+    border: none;
+    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
+    transition: all 0.3s ease;
+}
+
+#send-btn:hover {
+    background: linear-gradient(135deg, #0056b3 0%, #004085 100%);
+    transform: translateY(-2px);
+    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
+}
+
+#send-btn:active {
+    transform: translateY(0);
+}
+
+/* Chat container enhancements */
+#chat-container {
+    background: linear-gradient(to bottom, #ffffff 0%, #f8f9fa 100%);
+    border-radius: 0;
+}
+
+.chat .card-header {
+    background: linear-gradient(135deg, var(--primary-color) 0%, #0056b3 100%) !important;
+    border-radius: 0.375rem 0.375rem 0 0 !important;
+}
+
+/* Enhance chat card styling */
+.chat .card {
+    border: none;
+    box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.1) !important;
+    border-radius: 0.75rem;
+    overflow: hidden;
+}
diff --git a/public/images/logo.png b/public/images/logo.png
new file mode 100644
index 0000000..154e727
Binary files /dev/null and b/public/images/logo.png differ
diff --git a/public/js/main.js b/public/js/main.js
new file mode 100644
index 0000000..0667f63
--- /dev/null
+++ b/public/js/main.js
@@ -0,0 +1,518 @@
+// Main JavaScript file for EduCat
+
+document.addEventListener('DOMContentLoaded', function() {
+    // Initialize tooltips
+    var tooltipTriggerList = [].slice.call(document.querySelectorAll('[data-bs-toggle="tooltip"]'));
+    var tooltipList = tooltipTriggerList.map(function (tooltipTriggerEl) {
+        return new bootstrap.Tooltip(tooltipTriggerEl);
+    });
+
+    // Initialize file upload functionality
+    initializeFileUpload();
+    
+    // Initialize drag and drop
+    initializeDragAndDrop();
+    
+    // Add fade-in animation to cards
+    animateCards();
+});
+
+function initializeFileUpload() {
+    const fileInput = document.getElementById('noteFile');
+    const uploadBtn = document.getElementById('upload-btn');
+    const fileInfo = document.getElementById('file-info');
+    const fileName = document.getElementById('file-name');
+    const fileSize = document.getElementById('file-size');
+    const uploadProgress = document.getElementById('upload-progress');
+    const uploadResult = document.getElementById('upload-result');
+    const uploadArea = document.getElementById('upload-area');
+
+    if (!fileInput) return;
+
+    // Remove any existing event listeners to prevent duplicates
+    fileInput.removeEventListener('change', handleFileChange);
+    fileInput.addEventListener('change', handleFileChange);
+
+    if (uploadBtn) {
+        uploadBtn.removeEventListener('click', handleUploadClick);
+        uploadBtn.addEventListener('click', handleUploadClick);
+    }
+
+    function handleFileChange(e) {
+        const file = e.target.files[0];
+        if (file) {
+            showFileInfo(file);
+            uploadBtn.disabled = false;
+        }
+    }
+
+    function handleUploadClick(e) {
+        e.preventDefault();
+        uploadFile();
+    }
+
+    function showFileInfo(file) {
+        if (fileName && fileSize && fileInfo) {
+            fileName.textContent = file.name;
+            fileSize.textContent = `(${formatFileSize(file.size)})`;
+            fileInfo.classList.remove('d-none');
+        }
+    }
+
+    function uploadFile() {
+        const file = fileInput.files[0];
+        if (!file) return;
+
+        const formData = new FormData();
+        formData.append('noteFile', file);
+
+        uploadBtn.disabled = true;
+        uploadProgress.classList.remove('d-none');
+        uploadResult.innerHTML = '';
+
+        fetch('/upload', {
+            method: 'POST',
+            body: formData
+        })
+        .then(response => response.json())
+        .then(result => {
+            uploadProgress.classList.add('d-none');
+            
+            if (result.success) {
+                if (result.processing) {
+                    // Show processing status
+                    uploadResult.innerHTML = `
+                        <div class="alert alert-info">
+                            <i class="fas fa-spinner fa-spin me-2"></i>
+                            <strong>Upload Successful!</strong> ${result.message}
+                            <div class="mt-3">
+                                <div class="d-flex justify-content-between align-items-center">
+                                    <span>Processing document chunks for AI analysis...</span>
+                                    <div class="spinner-border spinner-border-sm text-primary" role="status"></div>
+                                </div>
+                                <div class="mt-2">
+                                    <small class="text-muted">This may take a few moments depending on document size.</small>
+                                </div>
+                            </div>
+                            <div class="mt-3">
+                                <button class="btn btn-sm btn-outline-primary" onclick="checkUploadStatus('${result.fileInfo.id}')">
+                                    <i class="fas fa-sync me-1"></i>Check Status
+                                </button>
+                                <a href="/dashboard" class="btn btn-sm btn-outline-primary ms-2">
+                                    <i class="fas fa-tachometer-alt me-1"></i>View Dashboard
+                                </a>
+                            </div>
+                        </div>
+                    `;
+                    
+                    // Start polling for status updates
+                    startStatusPolling(result.fileInfo.id);
+                } else {
+                    // Immediate success (shouldn't happen with new flow)
+                    uploadResult.innerHTML = `
+                        <div class="alert alert-success">
+                            <i class="fas fa-check-circle me-2"></i>
+                            <strong>Success!</strong> ${result.message}
+                            <div class="mt-2">
+                                <a href="/revise/${result.fileInfo.id}" class="btn btn-sm btn-primary">
+                                    <i class="fas fa-brain me-1"></i>Revise with AI
+                                </a>
+                                <a href="/dashboard" class="btn btn-sm btn-outline-primary ms-2">
+                                    <i class="fas fa-tachometer-alt me-1"></i>View Dashboard
+                                </a>
+                            </div>
+                        </div>
+                    `;
+                }
+                
+                // Reset form
+                fileInput.value = '';
+                fileInfo.classList.add('d-none');
+                uploadBtn.disabled = true;
+                
+                // Add success animation
+                uploadArea.classList.add('upload-success');
+                setTimeout(() => {
+                    uploadArea.classList.remove('upload-success');
+                }, 2000);
+            } else {
+                uploadResult.innerHTML = `
+                    <div class="alert alert-danger">
+                        <i class="fas fa-exclamation-triangle me-2"></i>
+                        <strong>Error!</strong> ${result.error}
+                        ${result.details ? `<br><small class="text-muted">${result.details}</small>` : ''}
+                    </div>
+                `;
+                uploadArea.classList.add('upload-error');
+                setTimeout(() => {
+                    uploadArea.classList.remove('upload-error');
+                }, 2000);
+            }
+        })
+        .catch(error => {
+            uploadProgress.classList.add('d-none');
+            uploadResult.innerHTML = `
+                <div class="alert alert-danger">
+                    <i class="fas fa-exclamation-triangle me-2"></i>
+                    <strong>Error!</strong> ${error.message}
+                </div>
+            `;
+            uploadArea.classList.add('upload-error');
+            setTimeout(() => {
+                uploadArea.classList.remove('upload-error');
+            }, 2000);
+        })
+        .finally(() => {
+            uploadBtn.disabled = false;
+        });
+    }
+}
+
+function initializeDragAndDrop() {
+    const uploadArea = document.getElementById('upload-area');
+    const fileInput = document.getElementById('noteFile');
+    
+    if (!uploadArea || !fileInput) return;
+
+    uploadArea.addEventListener('click', function(e) {
+        // Only trigger file input if clicking on the area itself, not the button
+        if (e.target === uploadArea || e.target.tagName === 'I' || e.target.tagName === 'H5' || e.target.tagName === 'P') {
+            fileInput.click();
+        }
+    });
+
+    uploadArea.addEventListener('dragover', function(e) {
+        e.preventDefault();
+        uploadArea.classList.add('dragover');
+    });
+
+    uploadArea.addEventListener('dragleave', function(e) {
+        e.preventDefault();
+        uploadArea.classList.remove('dragover');
+    });
+
+    uploadArea.addEventListener('drop', function(e) {
+        e.preventDefault();
+        uploadArea.classList.remove('dragover');
+        
+        const files = e.dataTransfer.files;
+        if (files.length > 0) {
+            fileInput.files = files;
+            fileInput.dispatchEvent(new Event('change'));
+        }
+    });
+}
+
+function animateCards() {
+    const cards = document.querySelectorAll('.card');
+    cards.forEach((card, index) => {
+        card.style.opacity = '0';
+        card.style.transform = 'translateY(20px)';
+        
+        setTimeout(() => {
+            card.style.transition = 'opacity 0.5s ease, transform 0.5s ease';
+            card.style.opacity = '1';
+            card.style.transform = 'translateY(0)';
+        }, index * 100);
+    });
+}
+
+function formatFileSize(bytes) {
+    if (bytes === 0) return '0 Bytes';
+    
+    const k = 1024;
+    const sizes = ['Bytes', 'KB', 'MB', 'GB'];
+    const i = Math.floor(Math.log(bytes) / Math.log(k));
+    
+    return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];
+}
+
+// Utility functions
+function showToast(message, type = 'info') {
+    const toast = document.createElement('div');
+    toast.className = `toast align-items-center text-bg-${type} border-0`;
+    toast.setAttribute('role', 'alert');
+    toast.setAttribute('aria-live', 'assertive');
+    toast.setAttribute('aria-atomic', 'true');
+    
+    toast.innerHTML = `
+        <div class="d-flex">
+            <div class="toast-body">
+                ${message}
+            </div>
+            <button type="button" class="btn-close btn-close-white me-2 m-auto" data-bs-dismiss="toast"></button>
+        </div>
+    `;
+    
+    // Add to page
+    let toastContainer = document.querySelector('.toast-container');
+    if (!toastContainer) {
+        toastContainer = document.createElement('div');
+        toastContainer.className = 'toast-container position-fixed bottom-0 end-0 p-3';
+        document.body.appendChild(toastContainer);
+    }
+    
+    toastContainer.appendChild(toast);
+    
+    const bsToast = new bootstrap.Toast(toast);
+    bsToast.show();
+    
+    // Remove after hiding
+    toast.addEventListener('hidden.bs.toast', function() {
+        toast.remove();
+    });
+}
+
+function showLoading(element) {
+    element.innerHTML = `
+        <div class="d-flex justify-content-center align-items-center">
+            <div class="spinner-border spinner-border-sm me-2" role="status">
+                <span class="visually-hidden">Loading...</span>
+            </div>
+            Loading...
+        </div>
+    `;
+}
+
+function hideLoading(element, originalContent) {
+    element.innerHTML = originalContent;
+}
+
+// Error handling
+window.addEventListener('error', function(e) {
+    console.error('Global error:', e.error);
+    showToast('An unexpected error occurred. Please try again.', 'danger');
+});
+
+// Handle unhandled promise rejections
+window.addEventListener('unhandledrejection', function(e) {
+    console.error('Unhandled promise rejection:', e.reason);
+    showToast('An unexpected error occurred. Please try again.', 'danger');
+});
+
+// Add smooth scrolling for anchor links (but not for dropdown triggers)
+document.querySelectorAll('a[href^="#"]').forEach(anchor => {
+    const href = anchor.getAttribute('href');
+    // Skip empty anchors and dropdown triggers
+    if (href === '#' || anchor.hasAttribute('data-bs-toggle')) {
+        return;
+    }
+    
+    anchor.addEventListener('click', function (e) {
+        e.preventDefault();
+        const target = document.querySelector(href);
+        if (target) {
+            target.scrollIntoView({
+                behavior: 'smooth'
+            });
+        }
+    });
+});
+
+// Add loading states to buttons (but not for login/register/quiz forms)
+document.querySelectorAll('.btn').forEach(button => {
+    if (button.type === 'submit' || button.hasAttribute('data-loading')) {
+        // Skip login, register, and quiz form buttons
+        const form = button.closest('form');
+        if (form && (form.action.includes('/login') || form.action.includes('/register') || form.id === 'quizForm')) {
+            return;
+        }
+        
+        button.addEventListener('click', function() {
+            if (!this.disabled) {
+                const originalText = this.innerHTML;
+                this.innerHTML = `
+                    <span class="spinner-border spinner-border-sm me-2" role="status" aria-hidden="true"></span>
+                    Loading...
+                `;
+                this.disabled = true;
+                
+                // Re-enable after 5 seconds (fallback)
+                setTimeout(() => {
+                    this.innerHTML = originalText;
+                    this.disabled = false;
+                }, 5000);
+            }
+        });
+    }
+});
+
+// Status polling for document processing
+let statusPollingInterval = null;
+
+function startStatusPolling(fileId) {
+    // Clear any existing polling
+    if (statusPollingInterval) {
+        clearInterval(statusPollingInterval);
+    }
+    
+    // Poll every 3 seconds
+    statusPollingInterval = setInterval(() => {
+        checkUploadStatus(fileId, true);
+    }, 3000);
+}
+
+function stopStatusPolling() {
+    if (statusPollingInterval) {
+        clearInterval(statusPollingInterval);
+        statusPollingInterval = null;
+    }
+}
+
+async function checkUploadStatus(fileId, isPolling = false) {
+    try {
+        const response = await fetch(`/api/files/${fileId}/status`);
+        const result = await response.json();
+        
+        if (result.success) {
+            const file = result.file;
+            const uploadResult = document.getElementById('upload-result');
+            
+            if (file.status === 'processed') {
+                // Processing completed successfully
+                if (uploadResult) {
+                    uploadResult.innerHTML = `
+                        <div class="alert alert-success">
+                            <i class="fas fa-check-circle me-2"></i>
+                            <strong>Processing Complete!</strong> Your document has been processed and is ready for AI analysis.
+                            <div class="mt-3">
+                                <div class="row">
+                                    <div class="col-md-6">
+                                        <small class="text-muted">
+                                            <i class="fas fa-puzzle-piece me-1"></i>
+                                            ${file.processingResult ? `${file.processingResult.successfulChunks}/${file.processingResult.totalChunks} chunks processed` : 'Processed successfully'}
+                                        </small>
+                                    </div>
+                                    <div class="col-md-6">
+                                        <small class="text-muted">
+                                            <i class="fas fa-clock me-1"></i>
+                                            ${file.processingResult && file.processingResult.processedAt ? new Date(file.processingResult.processedAt).toLocaleTimeString() : 'Just now'}
+                                        </small>
+                                    </div>
+                                </div>
+                            </div>
+                            <div class="mt-3">
+                                <a href="/revise/${file.id}" class="btn btn-sm btn-success">
+                                    <i class="fas fa-brain me-1"></i>Revise with AI
+                                </a>
+                                <a href="/dashboard" class="btn btn-sm btn-outline-primary ms-2">
+                                    <i class="fas fa-tachometer-alt me-1"></i>View Dashboard
+                                </a>
+                            </div>
+                        </div>
+                    `;
+                }
+                stopStatusPolling();
+                
+            } else if (file.status === 'failed') {
+                // Processing failed
+                if (uploadResult) {
+                    uploadResult.innerHTML = `
+                        <div class="alert alert-danger">
+                            <i class="fas fa-exclamation-triangle me-2"></i>
+                            <strong>Processing Failed!</strong> There was an error processing your document.
+                            ${file.processingError ? `<br><small class="text-muted">Error: ${file.processingError}</small>` : ''}
+                            <div class="mt-3">
+                                <button class="btn btn-sm btn-warning" onclick="retryDocumentProcessing('${file.id}')">
+                                    <i class="fas fa-redo me-1"></i>Retry Processing
+                                </button>
+                                <a href="/dashboard" class="btn btn-sm btn-outline-primary ms-2">
+                                    <i class="fas fa-tachometer-alt me-1"></i>View Dashboard
+                                </a>
+                            </div>
+                        </div>
+                    `;
+                }
+                stopStatusPolling();
+                
+            } else if (file.status === 'processing' && !isPolling) {
+                // Still processing, manual check
+                let progressInfo = '';
+                if (file.processingResult) {
+                    progressInfo = `<br><small class="text-muted">Progress: ${file.processingResult.successfulChunks || 0}/${file.processingResult.totalChunks || '?'} chunks</small>`;
+                }
+                
+                if (uploadResult) {
+                    uploadResult.innerHTML = `
+                        <div class="alert alert-info">
+                            <i class="fas fa-spinner fa-spin me-2"></i>
+                            <strong>Still Processing...</strong> Your document is being processed for AI analysis.
+                            ${progressInfo}
+                            <div class="mt-3">
+                                <button class="btn btn-sm btn-outline-primary" onclick="checkUploadStatus('${file.id}')">
+                                    <i class="fas fa-sync me-1"></i>Refresh Status
+                                </button>
+                                <a href="/dashboard" class="btn btn-sm btn-outline-primary ms-2">
+                                    <i class="fas fa-tachometer-alt me-1"></i>View Dashboard
+                                </a>
+                            </div>
+                        </div>
+                    `;
+                }
+                
+                // Start polling if not already polling
+                if (!statusPollingInterval) {
+                    startStatusPolling(fileId);
+                }
+            }
+            
+        } else {
+            console.error('Error checking status:', result.error);
+            if (!isPolling) {
+                alert('Error checking status: ' + result.error);
+            }
+        }
+    } catch (error) {
+        console.error('Error checking upload status:', error);
+        if (!isPolling) {
+            alert('Error checking upload status: ' + error.message);
+        }
+    }
+}
+
+async function retryDocumentProcessing(fileId) {
+    try {
+        const response = await fetch(`/api/files/${fileId}/retry`, {
+            method: 'POST',
+            headers: {
+                'Content-Type': 'application/json',
+            }
+        });
+        
+        const result = await response.json();
+        
+        if (result.success) {
+            // Update UI to show retry started
+            const uploadResult = document.getElementById('upload-result');
+            if (uploadResult) {
+                uploadResult.innerHTML = `
+                    <div class="alert alert-info">
+                        <i class="fas fa-spinner fa-spin me-2"></i>
+                        <strong>Retry Started!</strong> Processing your document again...
+                        <div class="mt-3">
+                            <button class="btn btn-sm btn-outline-primary" onclick="checkUploadStatus('${fileId}')">
+                                <i class="fas fa-sync me-1"></i>Check Status
+                            </button>
+                            <a href="/dashboard" class="btn btn-sm btn-outline-primary ms-2">
+                                <i class="fas fa-tachometer-alt me-1"></i>View Dashboard
+                            </a>
+                        </div>
+                    </div>
+                `;
+            }
+            
+            // Start polling again
+            startStatusPolling(fileId);
+        } else {
+            alert('Error retrying processing: ' + result.error);
+        }
+    } catch (error) {
+        console.error('Error retrying processing:', error);
+        alert('Error retrying processing: ' + error.message);
+    }
+}
+
+// Clean up polling when page unloads
+window.addEventListener('beforeunload', function() {
+    stopStatusPolling();
+});
diff --git a/server.js b/server.js
new file mode 100644
index 0000000..f87576f
--- /dev/null
+++ b/server.js
@@ -0,0 +1,1628 @@
+const express = require('express');
+const multer = require('multer');
+const axios = require('axios');
+const bodyParser = require('body-parser');
+const cors = require('cors');
+const session = require('express-session');
+const { v4: uuidv4 } = require('uuid');
+const fs = require('fs-extra');
+const path = require('path');
+const bcrypt = require('bcrypt');
+const flash = require('connect-flash');
+require('dotenv').config();
+
+// Document processing utilities
+const crypto = require('crypto');
+
+// Document chunking configuration
+const CHUNK_SIZE = 20000; // Larger chunks for FormData uploads (20KB)
+const CHUNK_OVERLAP = 200; // Overlap between chunks
+const MAX_DOCUMENT_SIZE = 1000000; // 1MB limit for document content
+
+// Flowise document store configuration
+const FLOWISE_BASE_URL = 'https://flowise.suika.cc';
+const FLOWISE_DOCUMENT_STORE_ID = 'e293dc23-7cb2-4522-a057-4f0c4b0a444c';
+const FLOWISE_API_KEY = process.env.FLOWISE_API_KEY || null;
+
+const app = express();
+const PORT = process.env.PORT || 3000;
+
+// Middleware
+app.use(cors());
+app.use(bodyParser.json());
+app.use(bodyParser.urlencoded({ extended: true }));
+app.use(express.static('public'));
+app.use(session({
+  secret: process.env.SESSION_SECRET || 'educat-secret-key',
+  resave: false,
+  saveUninitialized: false,
+  cookie: { secure: false, maxAge: 24 * 60 * 60 * 1000 } // 24 hours
+}));
+app.use(flash());
+
+// Set EJS as view engine
+app.set('view engine', 'ejs');
+app.set('views', './views');
+
+// Ensure uploads directory exists
+const uploadsDir = path.join(__dirname, 'uploads');
+fs.ensureDirSync(uploadsDir);
+
+// Simple user storage (in production, use a proper database)
+const users = [
+  {
+    id: 1,
+    username: 'admin',
+    email: 'admin@educat.com',
+    password: '$2b$10$92IXUNpkjO0rOQ5byMi.Ye4oKoEa3Ro9llC/.og/at2.uheWG/igi', // password
+    name: 'Admin User'
+  },
+  {
+    id: 2,
+    username: 'student',
+    email: 'student@educat.com',
+    password: '$2b$10$92IXUNpkjO0rOQ5byMi.Ye4oKoEa3Ro9llC/.og/at2.uheWG/igi', // password
+    name: 'Student User'
+  }
+];
+
+// Initialize demo users with proper password hashing
+async function initializeDemoUsers() {
+  try {
+    const hashedPassword = await bcrypt.hash('password', 10);
+    
+    users[0].password = hashedPassword;
+    users[1].password = hashedPassword;
+  } catch (error) {
+    console.error('Error initializing demo users:', error);
+  }
+}
+
+// Initialize demo users on startup
+initializeDemoUsers();
+
+// Authentication middleware
+const requireAuth = (req, res, next) => {
+  if (req.session.userId) {
+    next();
+  } else {
+    req.flash('error', 'Please log in to access this page');
+    res.redirect('/login');
+  }
+};
+
+// Add user info to all templates
+app.use((req, res, next) => {
+  res.locals.user = req.session.userId ? users.find(u => u.id === req.session.userId) : null;
+  res.locals.messages = req.flash();
+  next();
+});
+
+// Configure multer for file uploads
+const storage = multer.diskStorage({
+  destination: (req, file, cb) => {
+    cb(null, 'uploads/');
+  },
+  filename: (req, file, cb) => {
+    const uniqueSuffix = Date.now() + '-' + Math.round(Math.random() * 1E9);
+    cb(null, file.fieldname + '-' + uniqueSuffix + path.extname(file.originalname));
+  }
+});
+
+const upload = multer({ 
+  storage: storage,
+  limits: {
+    fileSize: 10 * 1024 * 1024 // 10MB limit
+  },
+  fileFilter: (req, file, cb) => {
+    // Allow text files, PDFs, and images
+    const allowedTypes = /jpeg|jpg|png|gif|pdf|txt|doc|docx/;
+    const extname = allowedTypes.test(path.extname(file.originalname).toLowerCase());
+    const mimetype = allowedTypes.test(file.mimetype);
+    
+    if (mimetype && extname) {
+      return cb(null, true);
+    } else {
+      cb(new Error('Only text files, PDFs, and images are allowed!'));
+    }
+  }
+});
+
+// Flowise API configuration
+const FLOWISE_API_URL = process.env.FLOWISE_API_URL || 'https://flowise.suika.cc/api/v1/prediction';
+const FLOWISE_CHATFLOW_ID = process.env.FLOWISE_CHATFLOW_ID || 'your-chatflow-id';
+
+// Helper function to chunk text into smaller pieces
+function chunkText(text, chunkSize = CHUNK_SIZE, overlap = CHUNK_OVERLAP) {
+  const chunks = [];
+  let start = 0;
+  
+  while (start < text.length) {
+    const end = Math.min(start + chunkSize, text.length);
+    const chunk = text.substring(start, end);
+    
+    // Only add non-empty chunks
+    if (chunk.trim().length > 0) {
+      chunks.push({
+        content: chunk.trim(),
+        metadata: {
+          chunkIndex: chunks.length,
+          startIndex: start,
+          endIndex: end,
+          totalLength: text.length
+        }
+      });
+    }
+    
+    // Move start position, accounting for overlap
+    start = end - overlap;
+    
+    // Break if we're at the end
+    if (end >= text.length) break;
+  }
+  
+  return chunks;
+}
+
+// Helper function to clean and validate document content
+function validateAndCleanDocument(content, originalName) {
+  // Remove excessive whitespace and normalize line endings
+  let cleanContent = content
+    .replace(/\r\n/g, '\n')
+    .replace(/\r/g, '\n')
+    .replace(/\n{3,}/g, '\n\n')
+    .replace(/[ \t]{2,}/g, ' ')
+    .trim();
+  
+  // Check document size
+  if (cleanContent.length > MAX_DOCUMENT_SIZE) {
+    throw new Error(`Document is too large (${cleanContent.length} characters). Maximum size is ${MAX_DOCUMENT_SIZE} characters.`);
+  }
+  
+  // Check if document has meaningful content
+  if (cleanContent.length < 50) {
+    throw new Error('Document content is too short. Please upload a document with at least 50 characters.');
+  }
+  
+  // Remove or replace problematic characters that might cause issues
+  cleanContent = cleanContent
+    .replace(/[\x00-\x08\x0B\x0C\x0E-\x1F\x7F]/g, '') // Remove control characters
+    .replace(/[^\x20-\x7E\n\t]/g, (char) => { // Replace non-printable characters
+      const code = char.charCodeAt(0);
+      return code > 127 ? char : ''; // Keep Unicode characters, remove other non-printable
+    });
+  
+  return cleanContent;
+}
+
+// Helper function to generate document hash for deduplication
+function generateDocumentHash(content, originalName) {
+  return crypto.createHash('sha256')
+    .update(content + originalName)
+    .digest('hex')
+    .substring(0, 16);
+}
+
+// Helper function to get document loaders from document store
+async function getDocumentStoreLoaders(documentStoreId) {
+  try {
+    console.log(`Getting document store loaders for: ${documentStoreId}`);
+    
+    const headers = {
+      'Content-Type': 'application/json',
+      'Accept': 'application/json'
+    };
+
+    if (FLOWISE_API_KEY) {
+      headers['Authorization'] = `Bearer ${FLOWISE_API_KEY}`;
+    }
+    
+    // Get document store details which includes loaders
+    const storeUrl = `${FLOWISE_BASE_URL}/api/v1/document-store/store/${documentStoreId}`;
+    const response = await axios.get(storeUrl, {
+      headers,
+      timeout: 10000
+    });
+    
+    console.log('Document store details:', {
+      status: response.status,
+      id: response.data.id,
+      name: response.data.name,
+      loaders: response.data.loaders
+    });
+    
+    // Parse loaders - they may come as array directly or as JSON string
+    let loaders = [];
+    if (response.data.loaders) {
+      if (Array.isArray(response.data.loaders)) {
+        // Loaders are already an array
+        loaders = response.data.loaders;
+        console.log('Loaders received as array:', loaders.length, 'loaders found');
+      } else if (typeof response.data.loaders === 'string') {
+        // Loaders are a JSON string that needs parsing
+        try {
+          loaders = JSON.parse(response.data.loaders);
+          console.log('Loaders parsed from JSON string:', loaders.length, 'loaders found');
+        } catch (parseError) {
+          console.log('Could not parse loaders JSON string, will create new one');
+          loaders = [];
+        }
+      } else {
+        console.log('Loaders in unexpected format, will create new one');
+        loaders = [];
+      }
+    }
+    
+    return {
+      store: response.data,
+      loaders: loaders
+    };
+  } catch (error) {
+    console.error('Error getting document store loaders:', {
+      error: error.message,
+      response: error.response ? {
+        status: error.response.status,
+        data: error.response.data
+      } : 'No response'
+    });
+    return null;
+  }
+}
+
+// Helper function to upsert document to Flowise using FormData (direct file upload)
+async function upsertDocumentToFlowiseFormData(fileInfo, documentMetadata) {
+  console.log('Starting Flowise Document Store upsert with FormData...');
+  console.log(`Document: ${documentMetadata.originalName}`);
+  console.log(`Original file path: ${fileInfo.path}`);
+  console.log(`Document Store ID: ${FLOWISE_DOCUMENT_STORE_ID}`);
+  
+  try {
+    // Create FormData for file upload
+    const FormData = require('form-data');
+    const formData = new FormData();
+    
+    // Read the file and append to FormData
+    const filePath = path.isAbsolute(fileInfo.path) ? fileInfo.path : path.join(__dirname, fileInfo.path);
+    const fileStream = fs.createReadStream(filePath);
+    
+    // Try to get existing document store info to find existing loaders
+    const storeInfo = await getDocumentStoreLoaders(FLOWISE_DOCUMENT_STORE_ID);
+    let docId = null;
+    let useExistingLoader = false;
+    
+    if (storeInfo && storeInfo.loaders && storeInfo.loaders.length > 0) {
+      // Use the first existing loader ID, but only if replaceExisting is true
+      docId = storeInfo.loaders[0].id || storeInfo.loaders[0].loaderId;
+      useExistingLoader = true;
+      console.log(`Using existing document loader ID: ${docId}`);
+      console.log(`Existing loader details:`, {
+        id: docId,
+        loaderName: storeInfo.loaders[0].loaderName,
+        splitterName: storeInfo.loaders[0].splitterName,
+        totalChunks: storeInfo.loaders[0].totalChunks,
+        status: storeInfo.loaders[0].status
+      });
+    } else {
+      // Create a new loader by letting Flowise auto-generate or create new store
+      console.log('No existing loaders found, will create new document entry');
+    }
+    
+    // Append form fields following the Flowise API structure
+    formData.append('files', fileStream, {
+      filename: fileInfo.originalName,
+      contentType: fileInfo.mimetype
+    });
+    
+    // Only append docId if we have an existing loader, otherwise let Flowise create new
+    if (useExistingLoader && docId) {
+      formData.append('docId', docId);
+      formData.append('replaceExisting', 'true');
+    } else {
+      // For new documents, don't specify docId and create new store entry
+      formData.append('replaceExisting', 'false');
+      formData.append('createNewDocStore', 'true');
+    }
+    
+    formData.append('splitter', JSON.stringify({
+      "config": {
+        "chunkSize": CHUNK_SIZE,
+        "chunkOverlap": CHUNK_OVERLAP
+      }
+    }));
+    
+    // Add metadata
+    const metadata = {
+      documentId: documentMetadata.documentId,
+      originalName: documentMetadata.originalName,
+      uploadDate: documentMetadata.uploadDate,
+      userId: documentMetadata.userId,
+      source: 'EduCat',
+      fileSize: fileInfo.size,
+      mimetype: fileInfo.mimetype
+    };
+    formData.append('metadata', JSON.stringify(metadata));
+    
+    // Don't duplicate the replaceExisting and createNewDocStore - they're set above
+    
+    // Prepare the upsert URL
+    const upsertUrl = `${FLOWISE_BASE_URL}/api/v1/document-store/upsert/${FLOWISE_DOCUMENT_STORE_ID}`;
+    console.log(`Upserting to: ${upsertUrl}`);
+    
+    // Prepare headers
+    const headers = {
+      ...formData.getHeaders()
+    };
+    
+    if (FLOWISE_API_KEY) {
+      headers['Authorization'] = `Bearer ${FLOWISE_API_KEY}`;
+    }
+    
+    console.log('Sending FormData upsert request...');
+    console.log('FormData fields:', {
+      docId: docId || 'auto-generated',
+      fileName: fileInfo.originalName,
+      fileSize: fileInfo.size,
+      replaceExisting: useExistingLoader,
+      createNewDocStore: !useExistingLoader,
+      chunkSize: CHUNK_SIZE,
+      useExistingLoader: useExistingLoader
+    });
+    
+    // Make the request using axios with FormData
+    const response = await axios.post(upsertUrl, formData, {
+      headers,
+      timeout: 120000, // 2 minute timeout for large files
+      maxContentLength: Infinity,
+      maxBodyLength: Infinity
+    });
+    
+    console.log('FormData upsert successful:', {
+      status: response.status,
+      statusText: response.statusText,
+      data: response.data
+    });
+    
+    return {
+      success: true,
+      totalChunks: 1, // FormData uploads are treated as single operations
+      successfulChunks: 1,
+      failedChunks: 0,
+      results: [{
+        chunkIndex: 0,
+        success: true,
+        response: response.data
+      }],
+      errors: []
+    };
+    
+  } catch (error) {
+    console.error('Flowise FormData upsert failed:', {
+      error: error.message,
+      response: error.response ? {
+        status: error.response.status,
+        statusText: error.response.statusText,
+        data: error.response.data
+      } : 'No response',
+      config: error.config ? {
+        url: error.config.url,
+        method: error.config.method
+      } : 'No config'
+    });
+    
+    // Fall back to local storage if Flowise fails
+    console.log('Falling back to local storage...');
+    
+    try {
+      const documentData = {
+        id: documentMetadata.documentId,
+        fileInfo: fileInfo,
+        metadata: documentMetadata,
+        storedAt: new Date().toISOString(),
+        fallbackReason: 'flowise_formdata_upsert_failed'
+      };
+      
+      const documentsDir = path.join(__dirname, 'data', 'documents');
+      await fs.ensureDir(documentsDir);
+      const documentPath = path.join(documentsDir, `${documentMetadata.documentId}.json`);
+      await fs.writeJSON(documentPath, documentData, { spaces: 2 });
+      
+      console.log(`Document stored locally as fallback: ${documentPath}`);
+      
+      return {
+        success: true,
+        totalChunks: 1,
+        successfulChunks: 1,
+        failedChunks: 0,
+        results: [{
+          chunkIndex: 0,
+          success: true,
+          response: { status: 'stored_locally', message: 'Fallback to local storage' }
+        }],
+        errors: []
+      };
+      
+    } catch (fallbackError) {
+      console.error('Local storage fallback also failed:', fallbackError);
+      return {
+        success: false,
+        totalChunks: 1,
+        successfulChunks: 0,
+        failedChunks: 1,
+        results: [],
+        errors: [{
+          chunkIndex: 0,
+          error: `Flowise FormData upsert failed: ${error.message}. Local fallback failed: ${fallbackError.message}`,
+          chunk: 'Complete document'
+        }]
+      };
+    }
+  }
+}
+
+// Routes
+app.get('/', (req, res) => {
+  res.render('index', { 
+    title: 'EduCat - AI-Powered Note Revision',
+    messages: req.flash()
+  });
+});
+
+// Authentication routes
+app.get('/login', (req, res) => {
+  if (req.session.userId) {
+    return res.redirect('/dashboard');
+  }
+  res.render('login', { 
+    title: 'Login - EduCat',
+    messages: req.flash()
+  });
+});
+
+app.post('/login', async (req, res) => {
+  try {
+    const { username, password } = req.body;
+    
+    if (!username || !password) {
+      req.flash('error', 'Please provide both username and password');
+      return res.redirect('/login');
+    }
+    
+    const user = users.find(u => u.username === username || u.email === username);
+    
+    if (!user) {
+      req.flash('error', 'Invalid username or password');
+      return res.redirect('/login');
+    }
+    
+    const isValidPassword = await bcrypt.compare(password, user.password);
+    
+    if (!isValidPassword) {
+      req.flash('error', 'Invalid username or password');
+      return res.redirect('/login');
+    }
+    
+    req.session.userId = user.id;
+    req.flash('success', `Welcome back, ${user.name}!`);
+    res.redirect('/dashboard');
+  } catch (error) {
+    console.error('Login error:', error);
+    req.flash('error', 'An error occurred during login');
+    res.redirect('/login');
+  }
+});
+
+app.get('/register', (req, res) => {
+  if (req.session.userId) {
+    return res.redirect('/dashboard');
+  }
+  res.render('register', { 
+    title: 'Register - EduCat',
+    messages: req.flash()
+  });
+});
+
+app.post('/register', async (req, res) => {
+  try {
+    const { username, email, password, confirmPassword, name } = req.body;
+    
+    if (!username || !email || !password || !confirmPassword || !name) {
+      req.flash('error', 'Please fill in all fields');
+      return res.redirect('/register');
+    }
+    
+    if (password !== confirmPassword) {
+      req.flash('error', 'Passwords do not match');
+      return res.redirect('/register');
+    }
+    
+    if (password.length < 6) {
+      req.flash('error', 'Password must be at least 6 characters long');
+      return res.redirect('/register');
+    }
+    
+    // Check if user already exists
+    const existingUser = users.find(u => u.username === username || u.email === email);
+    if (existingUser) {
+      req.flash('error', 'Username or email already exists');
+      return res.redirect('/register');
+    }
+    
+    // Hash password
+    const hashedPassword = await bcrypt.hash(password, 10);
+    
+    // Create new user
+    const newUser = {
+      id: users.length + 1,
+      username,
+      email,
+      password: hashedPassword,
+      name
+    };
+    
+    users.push(newUser);
+    
+    req.session.userId = newUser.id;
+    req.flash('success', `Welcome to EduCat, ${newUser.name}!`);
+    res.redirect('/dashboard');
+  } catch (error) {
+    console.error('Registration error:', error);
+    req.flash('error', 'An error occurred during registration');
+    res.redirect('/register');
+  }
+});
+
+app.get('/logout', (req, res) => {
+  req.session.destroy((err) => {
+    if (err) {
+      console.error('Logout error:', err);
+    }
+    res.redirect('/');
+  });
+});
+
+app.get('/upload', requireAuth, (req, res) => {
+  res.render('upload', { 
+    title: 'Upload Your Notes - EduCat'
+  });
+});
+
+app.post('/upload', requireAuth, upload.single('noteFile'), async (req, res) => {
+  try {
+    console.log('=== UPLOAD REQUEST START ===');
+    console.log('Request file:', req.file);
+    console.log('Request body:', req.body);
+    console.log('Session userId:', req.session.userId);
+    
+    if (!req.file) {
+      console.log('ERROR: No file uploaded');
+      return res.status(400).json({ 
+        success: false, 
+        error: 'No file uploaded' 
+      });
+    }
+
+    const fileInfo = {
+      id: uuidv4(),
+      originalName: req.file.originalname,
+      filename: req.file.filename,
+      path: req.file.path,
+      size: req.file.size,
+      mimetype: req.file.mimetype,
+      uploadDate: new Date().toISOString(),
+      userId: req.session.userId,
+      status: 'processing'
+    };
+
+    console.log('Created fileInfo:', fileInfo);
+
+    // Store initial file info in session
+    if (!req.session.uploadedFiles) {
+      req.session.uploadedFiles = [];
+    }
+    req.session.uploadedFiles.push(fileInfo);
+
+    console.log('Total uploaded files in session:', req.session.uploadedFiles.length);
+
+    // Send immediate response to prevent timeout
+    res.json({ 
+      success: true, 
+      message: 'File uploaded successfully! Processing document...',
+      fileInfo: fileInfo,
+      processing: true
+    });
+
+    console.log('Response sent, starting async processing...');
+
+    // Process document asynchronously
+    processDocumentAsync(fileInfo, req.session.userId);
+    
+  } catch (error) {
+    console.error('Upload error:', error);
+    res.status(500).json({ 
+      success: false, 
+      error: 'Upload failed',
+      details: error.message
+    });
+  }
+});
+
+// Async function to process document and upsert to Flowise using FormData
+async function processDocumentAsync(fileInfo, userId) {
+  try {
+    console.log('=== DOCUMENT PROCESSING START (FormData) ===');
+    console.log(`Starting document processing for: ${fileInfo.originalName}`);
+    console.log(`File path: ${fileInfo.path}`);
+    console.log(`File size: ${fileInfo.size} bytes`);
+    console.log(`User ID: ${userId}`);
+    
+    // Create document metadata
+    const documentMetadata = {
+      documentId: fileInfo.id,
+      originalName: fileInfo.originalName,
+      uploadDate: fileInfo.uploadDate,
+      userId: userId,
+      fileSize: fileInfo.size,
+      fileInfo: fileInfo // Pass file info for progress tracking
+    };
+    
+    console.log('Document metadata:', documentMetadata);
+    
+    // Initialize processing result
+    fileInfo.processingResult = {
+      totalChunks: 1, // FormData uploads are single operations
+      successfulChunks: 0,
+      failedChunks: 0,
+      startedAt: new Date().toISOString(),
+      status: 'uploading_to_flowise'
+    };
+    
+    console.log('About to start FormData upsert to Flowise...');
+    
+    // Upsert document to Flowise using FormData
+    const upsertResult = await upsertDocumentToFlowiseFormData(fileInfo, documentMetadata);
+    
+    console.log('FormData upsert result:', upsertResult);
+    
+    // Update file info with processing results
+    fileInfo.status = upsertResult.success ? 'processed' : 'failed';
+    fileInfo.processingProgress = null; // Clear progress when done
+    fileInfo.processingResult = {
+      totalChunks: upsertResult.totalChunks,
+      successfulChunks: upsertResult.successfulChunks,
+      failedChunks: upsertResult.failedChunks,
+      processedAt: new Date().toISOString(),
+      startedAt: fileInfo.processingResult.startedAt,
+      duration: Date.now() - new Date(fileInfo.processingResult.startedAt).getTime(),
+      method: 'formdata'
+    };
+    
+    if (upsertResult.errors.length > 0) {
+      fileInfo.processingErrors = upsertResult.errors;
+      console.log(`Processing errors for ${fileInfo.originalName}:`, upsertResult.errors);
+    }
+    
+    console.log(`Document processing completed for: ${fileInfo.originalName}`);
+    console.log(`Result: FormData upload ${upsertResult.success ? 'successful' : 'failed'}`);
+    
+    // Log final upsert verification
+    console.log('Final FormData upsert verification:', {
+      documentStore: `${FLOWISE_BASE_URL}/api/v1/document-store/${FLOWISE_DOCUMENT_STORE_ID}`,
+      documentId: fileInfo.id,
+      fileName: fileInfo.originalName,
+      success: upsertResult.success
+    });
+    
+  } catch (error) {
+    console.error(`Error processing document ${fileInfo.originalName}:`, error);
+    fileInfo.status = 'failed';
+    fileInfo.processingError = error.message;
+    fileInfo.processingResult = fileInfo.processingResult || {};
+    fileInfo.processingResult.failedAt = new Date().toISOString();
+  }
+}
+
+app.get('/revise/:fileId', requireAuth, async (req, res) => {
+  try {
+    const fileId = req.params.fileId;
+    const files = req.session.uploadedFiles || [];
+    const file = files.find(f => f.id === fileId);
+    
+    if (!file) {
+      return res.status(404).render('error', { 
+        title: 'File Not Found',
+        error: 'File not found'
+      });
+    }
+
+    // Read file content
+    const fileContent = await fs.readFile(file.path, 'utf-8');
+    
+    res.render('revise', { 
+      title: 'Revise Notes - EduCat',
+      file: file,
+      content: fileContent
+    });
+  } catch (error) {
+    console.error('Error loading file:', error);
+    res.status(500).render('error', { 
+      title: 'Error',
+      error: 'Failed to load file'
+    });
+  }
+});
+
+app.post('/api/revise', requireAuth, async (req, res) => {
+  try {
+    const { content, revisionType, fileId } = req.body;
+    
+    let prompt = '';
+    let contextContent = content;
+    
+    // If fileId is provided, try to get additional context from stored document
+    if (fileId) {
+      try {
+        const documentPath = path.join(__dirname, 'data', 'documents', `${fileId}.json`);
+        if (await fs.pathExists(documentPath)) {
+          const documentData = await fs.readJSON(documentPath);
+          contextContent = documentData.content;
+          console.log(`Using stored document content for revision: ${documentData.metadata.originalName}`);
+        }
+      } catch (error) {
+        console.log('Could not load stored document, using provided content');
+      }
+    }
+    
+    switch (revisionType) {
+      case 'summarize':
+        prompt = `Please summarize the following notes in a clear and concise manner:\n\n${contextContent}`;
+        break;
+      case 'improve':
+        prompt = `Please improve and enhance the following notes, making them more comprehensive and well-structured:\n\n${contextContent}`;
+        break;
+      case 'questions':
+        prompt = `Based on the following notes, generate study questions that would help test understanding:\n\n${contextContent}`;
+        break;
+      default:
+        prompt = `Please help improve these notes:\n\n${contextContent}`;
+    }
+
+    // Call Flowise API
+    const response = await axios.post(`${FLOWISE_API_URL}/${FLOWISE_CHATFLOW_ID}`, {
+      question: prompt,
+      history: []
+    });
+
+    res.json({ 
+      success: true, 
+      revisedContent: response.data.text || response.data.answer || 'No response received'
+    });
+  } catch (error) {
+    console.error('Revision error:', error);
+    res.status(500).json({ 
+      error: 'Failed to revise notes',
+      details: error.message
+    });
+  }
+});
+
+app.get('/chat', requireAuth, (req, res) => {
+  res.render('chat', { 
+    title: 'Chat with EduCat AI'
+  });
+});
+
+app.post('/api/chat', requireAuth, async (req, res) => {
+  try {
+    const { message, history } = req.body;
+    
+    // Call Flowise API for chat
+    const response = await axios.post(`${FLOWISE_API_URL}/${FLOWISE_CHATFLOW_ID}`, {
+      question: message,
+      history: history || []
+    });
+
+    res.json({ 
+      success: true, 
+      response: response.data.text || response.data.answer || 'No response received'
+    });
+  } catch (error) {
+    console.error('Chat error:', error);
+    res.status(500).json({ 
+      error: 'Failed to get chat response',
+      details: error.message
+    });
+  }
+});
+
+app.get('/dashboard', requireAuth, (req, res) => {
+  const files = req.session.uploadedFiles || [];
+  res.render('dashboard', { 
+    title: 'Dashboard - EduCat',
+    files: files
+  });
+});
+
+// File management endpoints
+app.get('/api/files/:fileId/preview', requireAuth, async (req, res) => {
+  try {
+    const fileId = req.params.fileId;
+    const files = req.session.uploadedFiles || [];
+    const file = files.find(f => f.id === fileId);
+    
+    if (!file) {
+      return res.status(404).json({ success: false, error: 'File not found' });
+    }
+
+    // Read file content
+    const filePath = path.join(__dirname, file.path);
+    const fileContent = await fs.readFile(filePath, 'utf-8');
+    
+    res.json({
+      success: true,
+      file: {
+        id: file.id,
+        originalName: file.originalName,
+        size: file.size,
+        uploadDate: file.uploadDate,
+        content: fileContent
+      }
+    });
+  } catch (error) {
+    console.error('Error previewing file:', error);
+    res.status(500).json({ 
+      success: false, 
+      error: 'Failed to preview file',
+      details: error.message
+    });
+  }
+});
+
+app.delete('/api/files/:fileId', requireAuth, async (req, res) => {
+  try {
+    const fileId = req.params.fileId;
+    const files = req.session.uploadedFiles || [];
+    const fileIndex = files.findIndex(f => f.id === fileId);
+    
+    if (fileIndex === -1) {
+      return res.status(404).json({ success: false, error: 'File not found' });
+    }
+
+    const file = files[fileIndex];
+    
+    // Delete the physical file
+    const filePath = path.join(__dirname, file.path);
+    if (await fs.pathExists(filePath)) {
+      await fs.unlink(filePath);
+    }
+    
+    // Remove from session
+    req.session.uploadedFiles.splice(fileIndex, 1);
+    
+    console.log(`File deleted: ${file.originalName} (ID: ${fileId})`);
+    
+    res.json({
+      success: true,
+      message: 'File deleted successfully'
+    });
+  } catch (error) {
+    console.error('Error deleting file:', error);
+    res.status(500).json({ 
+      success: false, 
+      error: 'Failed to delete file',
+      details: error.message
+    });
+  }
+});
+
+// File processing status endpoint
+app.get('/api/files/:fileId/status', requireAuth, async (req, res) => {
+  try {
+    const fileId = req.params.fileId;
+    const files = req.session.uploadedFiles || [];
+    const file = files.find(f => f.id === fileId);
+    
+    if (!file) {
+      return res.status(404).json({ success: false, error: 'File not found' });
+    }
+    
+    res.json({
+      success: true,
+      file: {
+        id: file.id,
+        originalName: file.originalName,
+        status: file.status,
+        uploadDate: file.uploadDate,
+        processingResult: file.processingResult,
+        processingError: file.processingError,
+        processingErrors: file.processingErrors
+      }
+    });
+  } catch (error) {
+    console.error('Error getting file status:', error);
+    res.status(500).json({ 
+      success: false, 
+      error: 'Failed to get file status',
+      details: error.message
+    });
+  }
+});
+
+// Retry processing endpoint
+app.post('/api/files/:fileId/retry', requireAuth, async (req, res) => {
+  try {
+    const fileId = req.params.fileId;
+    const files = req.session.uploadedFiles || [];
+    const file = files.find(f => f.id === fileId);
+    
+    if (!file) {
+      return res.status(404).json({ success: false, error: 'File not found' });
+    }
+    
+    if (file.status === 'processing') {
+      return res.status(400).json({ success: false, error: 'File is already being processed' });
+    }
+    
+    // Reset file status for retry
+    file.status = 'processing';
+    file.processingResult = null;
+    file.processingError = null;
+    file.processingErrors = null;
+    
+    // Start processing asynchronously
+    processDocumentAsync(file, req.session.userId);
+    
+    res.json({
+      success: true,
+      message: 'Processing retry initiated'
+    });
+  } catch (error) {
+    console.error('Error retrying processing:', error);
+    res.status(500).json({ 
+      success: false, 
+      error: 'Failed to retry processing',
+      details: error.message
+    });
+  }
+});
+
+// Bulk processing status endpoint
+app.get('/api/files/status/all', requireAuth, async (req, res) => {
+  try {
+    const files = req.session.uploadedFiles || [];
+    const statusSummary = files.map(file => ({
+      id: file.id,
+      originalName: file.originalName,
+      status: file.status,
+      uploadDate: file.uploadDate,
+      processingResult: file.processingResult ? {
+        totalChunks: file.processingResult.totalChunks,
+        successfulChunks: file.processingResult.successfulChunks,
+        failedChunks: file.processingResult.failedChunks,
+        processedAt: file.processingResult.processedAt
+      } : null
+    }));
+    
+    const summary = {
+      totalFiles: files.length,
+      processing: files.filter(f => f.status === 'processing').length,
+      processed: files.filter(f => f.status === 'processed').length,
+      failed: files.filter(f => f.status === 'failed').length,
+      files: statusSummary
+    };
+    
+    res.json({
+      success: true,
+      summary: summary
+    });
+  } catch (error) {
+    console.error('Error getting files status:', error);
+    res.status(500).json({ 
+      success: false, 
+      error: 'Failed to get files status',
+      details: error.message
+    });
+  }
+});
+
+app.get('/quiz', requireAuth, (req, res) => {
+  res.render('quiz', { 
+    title: 'AI Quiz Generator - EduCat'
+  });
+});
+
+app.post('/api/generate-quiz', requireAuth, async (req, res) => {
+  console.log('=== QUIZ API REQUEST RECEIVED ===');
+  console.log('Request body:', req.body);
+  console.log('User ID:', req.session.userId);
+  console.log('=================================');
+  
+  try {
+    const { topic, difficulty, questionCount, quizType } = req.body;
+    
+    console.log('Quiz request:', { topic, difficulty, questionCount, quizType });
+    
+    let prompt = '';
+    switch (quizType) {
+      case 'multiple-choice':
+        prompt = `Generate exactly ${questionCount} multiple choice questions about "${topic}" at ${difficulty} difficulty level. 
+        Each question should have 4 options (A, B, C, D). 
+        Format the response as a JSON array where each question follows this exact structure:
+        [
+          {
+            "question": "What is the capital of France?",
+            "options": ["A) London", "B) Paris", "C) Berlin", "D) Madrid"],
+            "correct": "B",
+            "explanation": "Paris is the capital and largest city of France."
+          }
+        ]
+        Return ONLY the JSON array, no additional text.`;
+        break;
+      case 'true-false':
+        prompt = `Generate exactly ${questionCount} true/false questions about "${topic}" at ${difficulty} difficulty level.
+        Format the response as a JSON array where each question follows this exact structure:
+        [
+          {
+            "question": "The Earth is flat.",
+            "correct": "False",
+            "explanation": "The Earth is spherical, not flat."
+          }
+        ]
+        Return ONLY the JSON array, no additional text.`;
+        break;
+      case 'short-answer':
+        prompt = `Generate exactly ${questionCount} short answer questions about "${topic}" at ${difficulty} difficulty level.
+        Format the response as a JSON array where each question follows this exact structure:
+        [
+          {
+            "question": "What is the process by which plants make their own food?",
+            "answer": "Photosynthesis",
+            "keywords": ["photosynthesis", "sunlight", "chlorophyll"]
+          }
+        ]
+        Return ONLY the JSON array, no additional text.`;
+        break;
+      default:
+        prompt = `Generate exactly ${questionCount} multiple choice questions about "${topic}" at ${difficulty} difficulty level.`;
+    }
+
+    console.log('Sending prompt to Flowise:', prompt.substring(0, 100) + '...');
+
+    // Call Flowise API
+    const response = await axios.post(`${FLOWISE_API_URL}/${FLOWISE_CHATFLOW_ID}`, {
+      question: prompt,
+      history: []
+    });
+
+    console.log('Flowise response received:', {
+      status: response.status,
+      dataType: typeof response.data,
+      dataPreview: JSON.stringify(response.data).substring(0, 200) + '...'
+    });
+
+    let quizData;
+    try {
+      const responseText = response.data.text || response.data.answer || response.data;
+      console.log('Raw response text preview:', responseText.substring(0, 500) + '...');
+      
+      // Try to extract JSON from the response
+      let jsonString = null;
+      
+      // First, try to find JSON wrapped in code blocks
+      const codeBlockMatch = responseText.match(/```(?:json)?\s*(\[[\s\S]*?\])\s*```/);
+      if (codeBlockMatch) {
+        jsonString = codeBlockMatch[1];
+        console.log('Found JSON in code block');
+      } else {
+        // Try to find JSON array by counting brackets
+        const startIndex = responseText.indexOf('[');
+        if (startIndex !== -1) {
+          let bracketCount = 0;
+          let endIndex = startIndex;
+          
+          for (let i = startIndex; i < responseText.length; i++) {
+            if (responseText[i] === '[') bracketCount++;
+            if (responseText[i] === ']') bracketCount--;
+            if (bracketCount === 0) {
+              endIndex = i;
+              break;
+            }
+          }
+          
+          if (bracketCount === 0) {
+            jsonString = responseText.substring(startIndex, endIndex + 1);
+            console.log('Found JSON by bracket counting');
+          }
+        }
+      }
+      
+      if (jsonString) {
+        console.log('Parsing JSON string:', jsonString.substring(0, 200) + '...');
+        quizData = JSON.parse(jsonString);
+        console.log('Successfully parsed quiz data, questions:', quizData.length);
+      } else {
+        console.log('No JSON found, using fallback quiz');
+        quizData = generateFallbackQuiz(topic, questionCount, quizType);
+      }
+    } catch (parseError) {
+      console.error('Quiz parsing error:', parseError);
+      console.log('Using fallback quiz due to parsing error');
+      quizData = generateFallbackQuiz(topic, questionCount, quizType);
+    }
+
+    console.log('Final quiz data:', {
+      questionsCount: quizData.length,
+      firstQuestion: quizData[0]
+    });
+
+    res.json({ 
+      success: true, 
+      quiz: quizData,
+      topic: topic,
+      difficulty: difficulty,
+      questionCount: questionCount,
+      quizType: quizType
+    });
+  } catch (error) {
+    console.error('Quiz generation error:', error);
+    console.error('Error stack:', error.stack);
+    
+    // Return fallback quiz on error
+    const fallbackQuiz = generateFallbackQuiz(req.body.topic || 'General Knowledge', req.body.questionCount || 5, req.body.quizType || 'multiple-choice');
+    
+    console.log('Returning fallback quiz due to error');
+    res.json({ 
+      success: true, 
+      quiz: fallbackQuiz,
+      topic: req.body.topic || 'General Knowledge',
+      difficulty: req.body.difficulty || 'beginner',
+      questionCount: req.body.questionCount || 5,
+      quizType: req.body.quizType || 'multiple-choice'
+    });
+  }
+});
+
+function generateFallbackQuiz(topic, questionCount, quizType) {
+  const questions = [];
+  
+  // Generate actual questions based on topic
+  const topicQuestions = {
+    'javascript': [
+      {
+        question: 'What is the correct way to declare a variable in JavaScript?',
+        options: ['A) var myVar = 5;', 'B) variable myVar = 5;', 'C) declare myVar = 5;', 'D) int myVar = 5;'],
+        correct: 'A',
+        explanation: 'The var keyword is used to declare variables in JavaScript.'
+      },
+      {
+        question: 'Which method is used to add an element to the end of an array?',
+        options: ['A) push()', 'B) add()', 'C) append()', 'D) insert()'],
+        correct: 'A',
+        explanation: 'The push() method adds one or more elements to the end of an array.'
+      },
+      {
+        question: 'What does === operator do in JavaScript?',
+        options: ['A) Assigns a value', 'B) Compares values only', 'C) Compares values and types', 'D) Declares a constant'],
+        correct: 'C',
+        explanation: 'The === operator compares both value and type without type conversion.'
+      },
+      {
+        question: 'How do you write a comment in JavaScript?',
+        options: ['A) <!-- comment -->', 'B) // comment', 'C) # comment', 'D) /* comment */'],
+        correct: 'B',
+        explanation: 'Single-line comments in JavaScript start with //.'
+      },
+      {
+        question: 'What is the result of typeof null in JavaScript?',
+        options: ['A) "null"', 'B) "undefined"', 'C) "object"', 'D) "boolean"'],
+        correct: 'C',
+        explanation: 'typeof null returns "object" due to a legacy bug in JavaScript.'
+      }
+    ],
+    'python': [
+      {
+        question: 'Which keyword is used to create a function in Python?',
+        options: ['A) function', 'B) def', 'C) create', 'D) func'],
+        correct: 'B',
+        explanation: 'The def keyword is used to define functions in Python.'
+      },
+      {
+        question: 'What is the correct way to create a list in Python?',
+        options: ['A) list = (1, 2, 3)', 'B) list = {1, 2, 3}', 'C) list = [1, 2, 3]', 'D) list = <1, 2, 3>'],
+        correct: 'C',
+        explanation: 'Square brackets [] are used to create lists in Python.'
+      },
+      {
+        question: 'How do you start a comment in Python?',
+        options: ['A) //', 'B) #', 'C) /*', 'D) --'],
+        correct: 'B',
+        explanation: 'Comments in Python start with the # symbol.'
+      },
+      {
+        question: 'What does len() function do in Python?',
+        options: ['A) Returns the length of an object', 'B) Converts to lowercase', 'C) Rounds a number', 'D) Prints output'],
+        correct: 'A',
+        explanation: 'The len() function returns the number of items in an object.'
+      },
+      {
+        question: 'Which of the following is a mutable data type in Python?',
+        options: ['A) tuple', 'B) string', 'C) list', 'D) integer'],
+        correct: 'C',
+        explanation: 'Lists are mutable, meaning they can be changed after creation.'
+      }
+    ],
+    'math': [
+      {
+        question: 'What is the value of π (pi) approximately?',
+        options: ['A) 3.14159', 'B) 2.71828', 'C) 1.61803', 'D) 4.66920'],
+        correct: 'A',
+        explanation: 'π (pi) is approximately 3.14159, the ratio of circumference to diameter.'
+      },
+      {
+        question: 'What is the derivative of x²?',
+        options: ['A) x', 'B) 2x', 'C) x³', 'D) 2x²'],
+        correct: 'B',
+        explanation: 'Using the power rule, the derivative of x² is 2x.'
+      },
+      {
+        question: 'What is the Pythagorean theorem?',
+        options: ['A) a + b = c', 'B) a² + b² = c²', 'C) a × b = c', 'D) a² - b² = c²'],
+        correct: 'B',
+        explanation: 'The Pythagorean theorem states that a² + b² = c² for right triangles.'
+      },
+      {
+        question: 'What is the factorial of 5?',
+        options: ['A) 25', 'B) 120', 'C) 60', 'D) 100'],
+        correct: 'B',
+        explanation: '5! = 5 × 4 × 3 × 2 × 1 = 120'
+      },
+      {
+        question: 'What is the square root of 64?',
+        options: ['A) 6', 'B) 7', 'C) 8', 'D) 9'],
+        correct: 'C',
+        explanation: 'The square root of 64 is 8 because 8² = 64.'
+      }
+    ]
+  };
+  
+  // Get appropriate questions for the topic
+  const availableQuestions = topicQuestions[topic.toLowerCase()] || topicQuestions['math'];
+  
+  for (let i = 0; i < questionCount; i++) {
+    const questionIndex = i % availableQuestions.length;
+    const baseQuestion = availableQuestions[questionIndex];
+    
+    if (quizType === 'multiple-choice') {
+      questions.push({
+        question: baseQuestion.question,
+        options: baseQuestion.options,
+        correct: baseQuestion.correct,
+        explanation: baseQuestion.explanation
+      });
+    } else if (quizType === 'true-false') {
+      questions.push({
+        question: baseQuestion.question.replace(/Which|What|How/, 'Is it true that'),
+        correct: Math.random() > 0.5 ? 'True' : 'False',
+        explanation: baseQuestion.explanation
+      });
+    } else {
+      questions.push({
+        question: baseQuestion.question,
+        answer: baseQuestion.correct,
+        keywords: [baseQuestion.correct.toLowerCase(), topic.toLowerCase()]
+      });
+    }
+  }
+  
+  return questions;
+}
+
+app.post('/api/submit-quiz', requireAuth, async (req, res) => {
+  try {
+    const { answers, quiz, topic, difficulty, quizType } = req.body;
+    
+    let score = 0;
+    const results = [];
+    
+    quiz.forEach((question, index) => {
+      const userAnswer = answers[index];
+      const isCorrect = userAnswer === question.correct;
+      if (isCorrect) score++;
+      
+      results.push({
+        question: question.question,
+        userAnswer: userAnswer,
+        correctAnswer: question.correct,
+        isCorrect: isCorrect,
+        explanation: question.explanation || '',
+        options: question.options || null // Include options for multiple choice
+      });
+    });
+    
+    const percentage = Math.round((score / quiz.length) * 100);
+    
+    // Store quiz result in session
+    if (!req.session.quizResults) {
+      req.session.quizResults = [];
+    }
+    
+    const quizResult = {
+      id: uuidv4(),
+      topic: topic,
+      score: score,
+      total: quiz.length,
+      percentage: percentage,
+      date: new Date().toISOString(),
+      results: results,
+      userId: req.session.userId,
+      difficulty: difficulty || 'beginner',
+      quizType: quizType || 'multiple-choice'
+    };
+    
+    // Store quiz result in session (for immediate use)
+    req.session.quizResults.push(quizResult);
+    
+    // Store quiz result persistently
+    await addQuizResult(req.session.userId, quizResult);
+    
+    console.log(`Quiz result saved for user ${req.session.userId}: ${score}/${quiz.length} (${percentage}%)`);
+    
+    res.json({ 
+      success: true, 
+      score: score,
+      total: quiz.length,
+      percentage: percentage,
+      results: results,
+      quizId: quizResult.id
+    });
+  } catch (error) {
+    console.error('Quiz submission error:', error);
+    res.status(500).json({ 
+      error: 'Failed to submit quiz',
+      details: error.message
+    });
+  }
+});
+
+// Quiz results persistence
+const QUIZ_RESULTS_FILE = path.join(__dirname, 'data', 'quiz-results.json');
+
+// Ensure data directory exists
+async function ensureDataDirectory() {
+  await fs.ensureDir(path.join(__dirname, 'data'));
+}
+
+// Load quiz results from file
+async function loadQuizResults() {
+  try {
+    await ensureDataDirectory();
+    if (await fs.pathExists(QUIZ_RESULTS_FILE)) {
+      const data = await fs.readJSON(QUIZ_RESULTS_FILE);
+      return data || {};
+    }
+    return {};
+  } catch (error) {
+    console.error('Error loading quiz results:', error);
+    return {};
+  }
+}
+
+// Save quiz results to file
+async function saveQuizResults(results) {
+  try {
+    await ensureDataDirectory();
+    await fs.writeJSON(QUIZ_RESULTS_FILE, results, { spaces: 2 });
+  } catch (error) {
+    console.error('Error saving quiz results:', error);
+  }
+}
+
+// Add quiz result for user
+async function addQuizResult(userId, quizResult) {
+  const allResults = await loadQuizResults();
+  if (!allResults[userId]) {
+    allResults[userId] = [];
+  }
+  allResults[userId].push(quizResult);
+  await saveQuizResults(allResults);
+}
+
+// Get quiz results for user
+async function getUserQuizResults(userId) {
+  const allResults = await loadQuizResults();
+  return allResults[userId] || [];
+}
+
+// Error handling middleware
+app.use((error, req, res, next) => {
+  if (error instanceof multer.MulterError) {
+    if (error.code === 'LIMIT_FILE_SIZE') {
+      return res.status(400).json({ error: 'File too large. Maximum size is 10MB.' });
+    }
+  }
+  
+  console.error('Error:', error);
+  res.status(500).json({ error: 'Internal server error' });
+});
+
+// Quiz history route
+app.get('/quiz-history', requireAuth, async (req, res) => {
+  try {
+    const quizResults = await getUserQuizResults(req.session.userId);
+    res.render('quiz-history', { 
+      title: 'Quiz History - EduCat',
+      quizResults: quizResults.reverse() // Show newest first
+    });
+  } catch (error) {
+    console.error('Error loading quiz history:', error);
+    res.render('quiz-history', { 
+      title: 'Quiz History - EduCat',
+      quizResults: []
+    });
+  }
+});
+
+// API route to clear quiz history
+app.delete('/api/quiz-history', requireAuth, async (req, res) => {
+  try {
+    const userId = req.session.userId;
+    const allResults = await loadQuizResults();
+    
+    // Clear quiz history for this user
+    allResults[userId] = [];
+    await saveQuizResults(allResults);
+    
+    console.log(`Quiz history cleared for user ${userId}`);
+    
+    res.json({
+      success: true,
+      message: 'Quiz history cleared successfully'
+    });
+  } catch (error) {
+    console.error('Error clearing quiz history:', error);
+    res.status(500).json({ 
+      success: false, 
+      error: 'Failed to clear quiz history' 
+    });
+  }
+});
+
+// API route to get quiz statistics
+app.get('/api/quiz-stats', requireAuth, async (req, res) => {
+  try {
+    const quizResults = await getUserQuizResults(req.session.userId);
+    
+    if (quizResults.length === 0) {
+      return res.json({
+        success: true,
+        stats: {
+          totalQuizzes: 0,
+          averageScore: 0,
+          bestScore: 0,
+          recentQuizzes: [],
+          topicStats: {},
+          progressChart: []
+        }
+      });
+    }
+    
+    // Calculate statistics
+    const totalQuizzes = quizResults.length;
+    const averageScore = Math.round(quizResults.reduce((sum, quiz) => sum + quiz.percentage, 0) / totalQuizzes);
+    const bestScore = Math.max(...quizResults.map(quiz => quiz.percentage));
+    const recentQuizzes = quizResults.slice(-5).reverse(); // Last 5 quizzes
+    
+    // Topic statistics
+    const topicStats = {};
+    quizResults.forEach(quiz => {
+      if (!topicStats[quiz.topic]) {
+        topicStats[quiz.topic] = {
+          count: 0,
+          totalScore: 0,
+          bestScore: 0
+        };
+      }
+      topicStats[quiz.topic].count++;
+      topicStats[quiz.topic].totalScore += quiz.percentage;
+      topicStats[quiz.topic].bestScore = Math.max(topicStats[quiz.topic].bestScore, quiz.percentage);
+    });
+    
+    // Calculate average for each topic
+    Object.keys(topicStats).forEach(topic => {
+      topicStats[topic].averageScore = Math.round(topicStats[topic].totalScore / topicStats[topic].count);
+    });
+    
+    // Progress chart data (last 10 quizzes)
+    const progressChart = quizResults.slice(-10).map((quiz, index) => ({
+      quiz: index + 1,
+      score: quiz.percentage,
+      topic: quiz.topic,
+      date: quiz.date
+    }));
+    
+    res.json({
+      success: true,
+      stats: {
+        totalQuizzes,
+        averageScore,
+        bestScore,
+        recentQuizzes,
+        topicStats,
+        progressChart
+      }
+    });
+  } catch (error) {
+    console.error('Error getting quiz stats:', error);
+    res.status(500).json({ success: false, error: 'Failed to get quiz statistics' });
+  }
+});
+
+// API route to get detailed quiz results by ID
+app.get('/api/quiz-details/:quizId', requireAuth, async (req, res) => {
+  try {
+    const quizId = req.params.quizId;
+    const quizResults = await getUserQuizResults(req.session.userId);
+    
+    const quiz = quizResults.find(q => q.id === quizId);
+    
+    if (!quiz) {
+      return res.status(404).json({ success: false, error: 'Quiz not found' });
+    }
+    
+    res.json({
+      success: true,
+      quiz: quiz
+    });
+  } catch (error) {
+    console.error('Error getting quiz details:', error);
+    res.status(500).json({ success: false, error: 'Failed to get quiz details' });
+  }
+});
+
+// File progress tracking endpoint
+app.get('/api/files/:fileId/progress', requireAuth, async (req, res) => {
+  try {
+    const fileId = req.params.fileId;
+    const files = req.session.uploadedFiles || [];
+    const file = files.find(f => f.id === fileId);
+    
+    if (!file) {
+      return res.status(404).json({ success: false, error: 'File not found' });
+    }
+    
+    res.json({
+      success: true,
+      progress: {
+        status: file.status,
+        processingProgress: file.processingProgress || null,
+        processingResult: file.processingResult || null,
+        processingError: file.processingError || null
+      }
+    });
+  } catch (error) {
+    console.error('Error getting file progress:', error);
+    res.status(500).json({ 
+      success: false, 
+      error: 'Failed to get file progress',
+      details: error.message
+    });
+  }
+});
+
+// 404 handler
+app.use((req, res) => {
+  res.status(404).render('error', { 
+    title: 'Page Not Found',
+    error: 'The page you are looking for does not exist.'
+  });
+});
+
+app.listen(PORT, () => {
+  console.log(`EduCat server running on http://localhost:${PORT}`);
+  console.log(`Flowise API URL: ${FLOWISE_API_URL}`);
+  console.log(`Flowise Chatflow ID: ${FLOWISE_CHATFLOW_ID}`);
+  console.log(`Flowise Document Store ID: ${FLOWISE_DOCUMENT_STORE_ID}`);
+});
+
+
+
+
diff --git a/views/chat.ejs b/views/chat.ejs
new file mode 100644
index 0000000..dfbc85c
--- /dev/null
+++ b/views/chat.ejs
@@ -0,0 +1,196 @@
+<%- include('partials/header') %>
+
+<div class="container py-5">
+    <div class="row justify-content-center">
+        <div class="col-lg-8">
+            <div class="card shadow-lg border-0 chat">
+                <div class="card-header bg-primary text-white">
+                    <h3 class="mb-0"><i class="fas fa-comments me-2"></i>Chat with EduCat AI</h3>
+                </div>
+                <div class="card-body p-0">
+                    <div id="chat-container" class="p-4" style="height: 500px; overflow-y: auto;">
+                        <div class="chat-message bot-message mb-3">
+                            <div class="d-flex align-items-start">
+                                <div class="avatar bg-primary text-white rounded-circle d-flex align-items-center justify-content-center me-3 flex-shrink-0" style="width: 45px; height: 45px; min-width: 45px;">
+                                    <i class="fas fa-cat" style="font-size: 1.2rem;"></i>
+                                </div>
+                                <div class="message-content flex-grow-1">
+                                    <div class="message-bubble bg-light p-3 rounded-3 shadow-sm border">
+                                        <p class="mb-0">Hello! I'm EduCat AI, your study assistant. I can help you with questions about your notes, study techniques, and academic topics. How can I assist you today?</p>
+                                    </div>
+                                    <small class="text-muted d-block mt-1">Just now</small>
+                                </div>
+                            </div>
+                        </div>
+                    </div>
+                    <div class="border-top bg-light p-3">
+                        <div class="input-group">
+                            <input type="text" id="chat-input" class="form-control border-0 bg-white shadow-sm" placeholder="Type your message here..." style="border-radius: 25px 0 0 25px; padding: 12px 20px;">
+                            <button type="button" id="send-btn" class="btn btn-primary px-4 border-0" style="border-radius: 0 25px 25px 0;">
+                                <i class="fas fa-paper-plane"></i>
+                            </button>
+                        </div>
+                    </div>
+                </div>
+            </div>
+            
+            <div class="row mt-4">
+                <div class="col-md-6">
+                    <div class="card border-0 shadow-sm">
+                        <div class="card-body text-center">
+                            <i class="fas fa-question-circle fa-2x text-primary mb-3"></i>
+                            <h6>Ask Questions</h6>
+                            <p class="text-muted small">Get answers about your study materials</p>
+                        </div>
+                    </div>
+                </div>
+                <div class="col-md-6">
+                    <div class="card border-0 shadow-sm">
+                        <div class="card-body text-center">
+                            <i class="fas fa-graduation-cap fa-2x text-success mb-3"></i>
+                            <h6>Study Help</h6>
+                            <p class="text-muted small">Get study tips and techniques</p>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
+</div>
+
+<script>
+let chatHistory = [];
+
+document.addEventListener('DOMContentLoaded', function() {
+    const chatContainer = document.getElementById('chat-container');
+    const chatInput = document.getElementById('chat-input');
+    const sendBtn = document.getElementById('send-btn');
+    
+    sendBtn.addEventListener('click', sendMessage);
+    chatInput.addEventListener('keypress', function(e) {
+        if (e.key === 'Enter') {
+            sendMessage();
+        }
+    });
+    
+    function sendMessage() {
+        const message = chatInput.value.trim();
+        if (!message) return;
+        
+        // Add user message to chat
+        addMessageToChat('user', message);
+        chatInput.value = '';
+        
+        // Add typing indicator
+        addTypingIndicator();
+        
+        // Send message to AI
+        sendToAI(message);
+    }
+    
+    function addMessageToChat(sender, message) {
+        const chatContainer = document.getElementById('chat-container');
+        const messageDiv = document.createElement('div');
+        messageDiv.className = `chat-message ${sender}-message mb-3`;
+        
+        const time = new Date().toLocaleTimeString([], {hour: '2-digit', minute:'2-digit'});
+        
+        if (sender === 'user') {
+            messageDiv.innerHTML = `
+                <div class="d-flex align-items-start justify-content-end">
+                    <div class="message-content me-3 flex-grow-1" style="max-width: 70%;">
+                        <div class="message-bubble bg-primary text-white p-3 rounded-3 shadow-sm">
+                            <p class="mb-0">${message}</p>
+                        </div>
+                        <small class="text-muted d-block text-end mt-1">${time}</small>
+                    </div>
+                    <div class="avatar bg-secondary text-white rounded-circle d-flex align-items-center justify-content-center flex-shrink-0" style="width: 45px; height: 45px; min-width: 45px;">
+                        <i class="fas fa-user" style="font-size: 1.1rem;"></i>
+                    </div>
+                </div>
+            `;
+        } else {
+            messageDiv.innerHTML = `
+                <div class="d-flex align-items-start">
+                    <div class="avatar bg-primary text-white rounded-circle d-flex align-items-center justify-content-center me-3 flex-shrink-0" style="width: 45px; height: 45px; min-width: 45px;">
+                        <i class="fas fa-cat" style="font-size: 1.2rem;"></i>
+                    </div>
+                    <div class="message-content flex-grow-1" style="max-width: 70%;">
+                        <div class="message-bubble bg-light p-3 rounded-3 shadow-sm border">
+                            <p class="mb-0">${message}</p>
+                        </div>
+                        <small class="text-muted d-block mt-1">${time}</small>
+                    </div>
+                </div>
+            `;
+        }
+        
+        chatContainer.appendChild(messageDiv);
+        chatContainer.scrollTop = chatContainer.scrollHeight;
+    }
+    
+    function addTypingIndicator() {
+        const chatContainer = document.getElementById('chat-container');
+        const typingDiv = document.createElement('div');
+        typingDiv.id = 'typing-indicator';
+        typingDiv.className = 'chat-message bot-message mb-3';
+        typingDiv.innerHTML = `
+            <div class="d-flex align-items-start">
+                <div class="avatar bg-primary text-white rounded-circle d-flex align-items-center justify-content-center me-3 flex-shrink-0" style="width: 45px; height: 45px; min-width: 45px;">
+                    <i class="fas fa-cat" style="font-size: 1.2rem;"></i>
+                </div>
+                <div class="message-content flex-grow-1">
+                    <div class="message-bubble bg-light p-3 rounded-3 shadow-sm border">
+                        <div class="typing-dots">
+                            <span></span>
+                            <span></span>
+                            <span></span>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        `;
+        
+        chatContainer.appendChild(typingDiv);
+        chatContainer.scrollTop = chatContainer.scrollHeight;
+    }
+    
+    function removeTypingIndicator() {
+        const typingIndicator = document.getElementById('typing-indicator');
+        if (typingIndicator) {
+            typingIndicator.remove();
+        }
+    }
+    
+    async function sendToAI(message) {
+        try {
+            const response = await fetch('/api/chat', {
+                method: 'POST',
+                headers: {
+                    'Content-Type': 'application/json',
+                },
+                body: JSON.stringify({
+                    message: message,
+                    history: chatHistory
+                })
+            });
+            
+            const result = await response.json();
+            
+            removeTypingIndicator();
+            
+            if (result.success) {
+                addMessageToChat('bot', result.response);
+                chatHistory.push({human: message, ai: result.response});
+            } else {
+                addMessageToChat('bot', 'Sorry, I encountered an error. Please try again.');
+            }
+        } catch (error) {
+            removeTypingIndicator();
+            addMessageToChat('bot', 'Sorry, I\'m having trouble connecting right now. Please try again.');
+        }
+    }
+});
+</script>
+
+<%- include('partials/footer') %>
diff --git a/views/dashboard.ejs b/views/dashboard.ejs
new file mode 100644
index 0000000..fe8eea1
--- /dev/null
+++ b/views/dashboard.ejs
@@ -0,0 +1,671 @@
+<%- include('partials/header') %>
+
+<div class="container py-5">
+    <div class="row">
+        <div class="col-12">
+            <div class="d-flex justify-content-between align-items-center mb-4">
+                <h2><i class="fas fa-tachometer-alt me-2"></i>Your Dashboard</h2>
+                <a href="/upload" class="btn btn-primary">
+                    <i class="fas fa-plus me-2"></i>Upload New Notes
+                </a>
+            </div>
+            
+            <% if (files.length === 0) { %>
+                <div class="text-center py-5">
+                    <i class="fas fa-folder-open fa-4x text-muted mb-4"></i>
+                    <h4>No files uploaded yet</h4>
+                    <p class="text-muted">Upload your first set of notes to get started with AI-powered revision.</p>
+                    <a href="/upload" class="btn btn-primary btn-lg">
+                        <i class="fas fa-upload me-2"></i>Upload Notes
+                    </a>
+                </div>
+            <% } else { %>
+                <div class="row">
+                    <% files.forEach(function(file, index) { %>
+                        <div class="col-md-6 col-lg-4 mb-4">
+                            <div class="card border-0 shadow-sm h-100">
+                                <div class="card-body">
+                                    <div class="d-flex align-items-center mb-3">
+                                        <div class="file-icon bg-primary text-white rounded-circle d-flex align-items-center justify-content-center me-3" style="width: 50px; height: 50px;">
+                                            <i class="fas fa-file-alt"></i>
+                                        </div>
+                                        <div class="flex-grow-1">
+                                            <h6 class="mb-1"><%= file.originalName %></h6>
+                                            <small class="text-muted"><%= Math.round(file.size / 1024) %> KB</small>
+                                        </div>
+                                        <div class="text-end">
+                                            <% if (file.status === 'processing') { %>
+                                                <span class="badge bg-warning">
+                                                    <i class="fas fa-spinner fa-spin me-1"></i>Processing
+                                                </span>
+                                            <% } else if (file.status === 'processed') { %>
+                                                <span class="badge bg-success">
+                                                    <i class="fas fa-check me-1"></i>Processed
+                                                </span>
+                                            <% } else if (file.status === 'failed') { %>
+                                                <span class="badge bg-danger">
+                                                    <i class="fas fa-times me-1"></i>Failed
+                                                </span>
+                                            <% } else { %>
+                                                <span class="badge bg-secondary">
+                                                    <i class="fas fa-clock me-1"></i>Uploaded
+                                                </span>
+                                            <% } %>
+                                        </div>
+                                    </div>
+                                    
+                                    <div class="mb-3">
+                                        <small class="text-muted">
+                                            <i class="fas fa-calendar me-1"></i>
+                                            Uploaded: <%= new Date(file.uploadDate).toLocaleDateString() %>
+                                        </small>
+                                        <% if (file.processingResult) { %>
+                                            <br><small class="text-muted">
+                                                <i class="fas fa-puzzle-piece me-1"></i>
+                                                Chunks: <%= file.processingResult.successfulChunks %>/<%= file.processingResult.totalChunks %>
+                                            </small>
+                                        <% } %>
+                                    </div>
+                                    
+                                    <div class="d-grid gap-2">
+                                        <% if (file.status === 'processed') { %>
+                                            <a href="/revise/<%= file.id %>" class="btn btn-primary btn-sm">
+                                                <i class="fas fa-brain me-2"></i>Revise with AI
+                                            </a>
+                                        <% } else if (file.status === 'processing') { %>
+                                            <button class="btn btn-secondary btn-sm" disabled>
+                                                <i class="fas fa-spinner fa-spin me-2"></i>Processing...
+                                            </button>
+                                        <% } else if (file.status === 'failed') { %>
+                                            <button class="btn btn-warning btn-sm" onclick="retryProcessing('<%= file.id %>')">
+                                                <i class="fas fa-redo me-2"></i>Retry Processing
+                                            </button>
+                                        <% } else { %>
+                                            <button class="btn btn-info btn-sm" onclick="checkProcessingStatus('<%= file.id %>')">
+                                                <i class="fas fa-sync me-2"></i>Check Status
+                                            </button>
+                                        <% } %>
+                                        
+                                        <div class="btn-group" role="group">
+                                            <button type="button" class="btn btn-outline-secondary btn-sm" onclick="previewFile('<%= file.id %>')">
+                                                <i class="fas fa-eye"></i> Preview
+                                            </button>
+                                            <button type="button" class="btn btn-outline-info btn-sm" onclick="viewProcessingDetails('<%= file.id %>')">
+                                                <i class="fas fa-info-circle"></i> Details
+                                            </button>
+                                            <button type="button" class="btn btn-outline-danger btn-sm" onclick="deleteFile('<%= file.id %>')">
+                                                <i class="fas fa-trash"></i> Delete
+                                            </button>
+                                        </div>
+                                    </div>
+                                </div>
+                            </div>
+                        </div>
+                    <% }); %>
+                </div>
+            <% } %>
+        </div>
+    </div>
+</div>
+
+<!-- Preview Modal -->
+<div class="modal fade" id="previewModal" tabindex="-1">
+    <div class="modal-dialog modal-lg">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title">File Preview</h5>
+                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
+            </div>
+            <div class="modal-body">
+                <div id="preview-content">
+                    <div class="text-center">
+                        <div class="spinner-border text-primary" role="status">
+                            <span class="visually-hidden">Loading...</span>
+                        </div>
+                        <p class="mt-2">Loading preview...</p>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
+</div>
+
+<!-- Processing Details Modal -->
+<div class="modal fade" id="processingDetailsModal" tabindex="-1">
+    <div class="modal-dialog modal-lg">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title">Processing Details</h5>
+                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
+            </div>
+            <div class="modal-body">
+                <div id="processing-details-content">
+                    <div class="text-center">
+                        <div class="spinner-border text-primary" role="status">
+                            <span class="visually-hidden">Loading...</span>
+                        </div>
+                        <p class="mt-2">Loading processing details...</p>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
+</div>
+
+<script>
+function previewFile(fileId) {
+    const modal = new bootstrap.Modal(document.getElementById('previewModal'));
+    const previewContent = document.getElementById('preview-content');
+    
+    previewContent.innerHTML = `
+        <div class="text-center">
+            <div class="spinner-border text-primary" role="status">
+                <span class="visually-hidden">Loading...</span>
+            </div>
+            <p class="mt-2">Loading preview...</p>
+        </div>
+    `;
+    
+    modal.show();
+    
+    // Fetch file content for preview
+    fetch(`/api/files/${fileId}/preview`)
+        .then(response => response.json())
+        .then(result => {
+            if (result.success) {
+                const file = result.file;
+                let content = '';
+                
+                // Check file type and format content accordingly
+                const fileExtension = file.originalName.split('.').pop().toLowerCase();
+                
+                if (['txt', 'md', 'json', 'js', 'html', 'css', 'py', 'java', 'cpp', 'c'].includes(fileExtension)) {
+                    // Text-based files - show with syntax highlighting
+                    content = `
+                        <div class="mb-3">
+                            <h6><i class="fas fa-file-alt me-2"></i>${file.originalName}</h6>
+                            <small class="text-muted">
+                                Size: ${Math.round(file.size / 1024)} KB | 
+                                Uploaded: ${new Date(file.uploadDate).toLocaleDateString()}
+                            </small>
+                        </div>
+                        <div class="border rounded p-3" style="background-color: #f8f9fa; max-height: 400px; overflow-y: auto;">
+                            <pre style="margin: 0; white-space: pre-wrap; word-wrap: break-word;"><code>${escapeHtml(file.content)}</code></pre>
+                        </div>
+                    `;
+                } else if (['pdf', 'doc', 'docx'].includes(fileExtension)) {
+                    // Document files - show basic info and content preview
+                    content = `
+                        <div class="mb-3">
+                            <h6><i class="fas fa-file-pdf me-2"></i>${file.originalName}</h6>
+                            <small class="text-muted">
+                                Size: ${Math.round(file.size / 1024)} KB | 
+                                Uploaded: ${new Date(file.uploadDate).toLocaleDateString()}
+                            </small>
+                        </div>
+                        <div class="alert alert-info">
+                            <i class="fas fa-info-circle me-2"></i>
+                            Document preview: First few lines of extracted text
+                        </div>
+                        <div class="border rounded p-3" style="background-color: #f8f9fa; max-height: 400px; overflow-y: auto;">
+                            <pre style="margin: 0; white-space: pre-wrap; word-wrap: break-word;">${escapeHtml(file.content.substring(0, 1000))}${file.content.length > 1000 ? '...' : ''}</pre>
+                        </div>
+                    `;
+                } else {
+                    // Other files - show basic info
+                    content = `
+                        <div class="mb-3">
+                            <h6><i class="fas fa-file me-2"></i>${file.originalName}</h6>
+                            <small class="text-muted">
+                                Size: ${Math.round(file.size / 1024)} KB | 
+                                Uploaded: ${new Date(file.uploadDate).toLocaleDateString()}
+                            </small>
+                        </div>
+                        <div class="alert alert-warning">
+                            <i class="fas fa-exclamation-triangle me-2"></i>
+                            Preview not available for this file type. File content is available for AI processing.
+                        </div>
+                    `;
+                }
+                
+                previewContent.innerHTML = content;
+            } else {
+                previewContent.innerHTML = `
+                    <div class="alert alert-danger">
+                        <i class="fas fa-exclamation-circle me-2"></i>
+                        Error loading preview: ${result.error || 'Unknown error'}
+                    </div>
+                `;
+            }
+        })
+        .catch(error => {
+            previewContent.innerHTML = `
+                <div class="alert alert-danger">
+                    <i class="fas fa-exclamation-circle me-2"></i>
+                    Error loading preview: ${error.message}
+                </div>
+            `;
+        });
+}
+
+// Helper function to escape HTML
+function escapeHtml(text) {
+    const div = document.createElement('div');
+    div.textContent = text;
+    return div.innerHTML;
+}
+
+function deleteFile(fileId) {
+    if (confirm('Are you sure you want to delete this file? This action cannot be undone.')) {
+        // Show loading state
+        const deleteBtn = document.querySelector(`button[onclick="deleteFile('${fileId}')"]`);
+        const originalText = deleteBtn.innerHTML;
+        deleteBtn.innerHTML = '<i class="fas fa-spinner fa-spin"></i> Deleting...';
+        deleteBtn.disabled = true;
+        
+        fetch(`/api/files/${fileId}`, {
+            method: 'DELETE',
+            headers: {
+                'Content-Type': 'application/json',
+            }
+        })
+        .then(response => {
+            if (!response.ok) {
+                throw new Error(`HTTP error! status: ${response.status}`);
+            }
+            return response.json();
+        })
+        .then(result => {
+            if (result.success) {
+                // Show success message
+                alert('File deleted successfully!');
+                location.reload();
+            } else {
+                alert('Error deleting file: ' + (result.error || 'Unknown error'));
+                deleteBtn.innerHTML = originalText;
+                deleteBtn.disabled = false;
+            }
+        })
+        .catch(error => {
+            console.error('Delete error:', error);
+            alert('Error deleting file: ' + error.message);
+            deleteBtn.innerHTML = originalText;
+            deleteBtn.disabled = false;
+        });
+    }
+}
+
+// Check processing status
+async function checkProcessingStatus(fileId) {
+    try {
+        const response = await fetch(`/api/files/${fileId}/status`);
+        const result = await response.json();
+        
+        if (result.success) {
+            // Show status update
+            const statusInfo = result.file;
+            let message = `Status: ${statusInfo.status}`;
+            
+            if (statusInfo.processingResult) {
+                message += `\nChunks processed: ${statusInfo.processingResult.successfulChunks}/${statusInfo.processingResult.totalChunks}`;
+                if (statusInfo.processingResult.processedAt) {
+                    message += `\nProcessed at: ${new Date(statusInfo.processingResult.processedAt).toLocaleString()}`;
+                }
+            }
+            
+            if (statusInfo.processingError) {
+                message += `\nError: ${statusInfo.processingError}`;
+            }
+            
+            alert(message);
+            
+            // Reload page if status changed
+            if (statusInfo.status !== 'processing') {
+                location.reload();
+            }
+        } else {
+            alert('Error checking status: ' + result.error);
+        }
+    } catch (error) {
+        console.error('Error checking processing status:', error);
+        alert('Error checking processing status: ' + error.message);
+    }
+}
+
+// Retry processing
+async function retryProcessing(fileId) {
+    if (confirm('Are you sure you want to retry processing this file?')) {
+        try {
+            const response = await fetch(`/api/files/${fileId}/retry`, {
+                method: 'POST',
+                headers: {
+                    'Content-Type': 'application/json',
+                }
+            });
+            
+            const result = await response.json();
+            
+            if (result.success) {
+                alert('Processing retry initiated. Please check back in a few moments.');
+                location.reload();
+            } else {
+                alert('Error retrying processing: ' + result.error);
+            }
+        } catch (error) {
+            console.error('Error retrying processing:', error);
+            alert('Error retrying processing: ' + error.message);
+        }
+    }
+}
+
+// View processing details
+async function viewProcessingDetails(fileId) {
+    try {
+        const modal = new bootstrap.Modal(document.getElementById('processingDetailsModal'));
+        const detailsContent = document.getElementById('processing-details-content');
+        
+        detailsContent.innerHTML = `
+            <div class="text-center">
+                <div class="spinner-border text-primary" role="status">
+                    <span class="visually-hidden">Loading...</span>
+                </div>
+                <p class="mt-2">Loading processing details...</p>
+            </div>
+        `;
+        
+        modal.show();
+        
+        const response = await fetch(`/api/files/${fileId}/status`);
+        const result = await response.json();
+        
+        if (result.success) {
+            const file = result.file;
+            let html = `
+                <div class="mb-3">
+                    <h6><i class="fas fa-file-alt me-2"></i>${escapeHtml(file.originalName)}</h6>
+                    <small class="text-muted">Uploaded: ${new Date(file.uploadDate).toLocaleString()}</small>
+                </div>
+                
+                <div class="row mb-3">
+                    <div class="col-md-6">
+                        <strong>Status:</strong>
+                        <span class="ms-2 badge ${file.status === 'processed' ? 'bg-success' : file.status === 'processing' ? 'bg-warning' : file.status === 'failed' ? 'bg-danger' : 'bg-secondary'}">
+                            ${file.status}
+                        </span>
+                    </div>
+                </div>
+            `;
+            
+            if (file.processingResult) {
+                html += `
+                    <div class="card mb-3">
+                        <div class="card-header">
+                            <h6 class="mb-0">Processing Results</h6>
+                        </div>
+                        <div class="card-body">
+                            <div class="row">
+                                <div class="col-md-4">
+                                    <strong>Total Chunks:</strong><br>
+                                    <span class="badge bg-info">${file.processingResult.totalChunks}</span>
+                                </div>
+                                <div class="col-md-4">
+                                    <strong>Successful:</strong><br>
+                                    <span class="badge bg-success">${file.processingResult.successfulChunks}</span>
+                                </div>
+                                <div class="col-md-4">
+                                    <strong>Failed:</strong><br>
+                                    <span class="badge bg-danger">${file.processingResult.failedChunks}</span>
+                                </div>
+                            </div>
+                            ${file.processingResult.processedAt ? `
+                                <div class="mt-3">
+                                    <strong>Processed At:</strong><br>
+                                    <small class="text-muted">${new Date(file.processingResult.processedAt).toLocaleString()}</small>
+                                </div>
+                            ` : ''}
+                            ${file.processingResult.documentHash ? `
+                                <div class="mt-3">
+                                    <strong>Document Hash:</strong><br>
+                                    <small class="text-muted font-monospace">${file.processingResult.documentHash}</small>
+                                </div>
+                            ` : ''}
+                            ${file.processingResult.contentLength ? `
+                                <div class="mt-3">
+                                    <strong>Content Length:</strong><br>
+                                    <small class="text-muted">${file.processingResult.contentLength.toLocaleString()} characters</small>
+                                </div>
+                            ` : ''}
+                        </div>
+                    </div>
+                `;
+            }
+            
+            if (file.processingError) {
+                html += `
+                    <div class="alert alert-danger">
+                        <h6><i class="fas fa-exclamation-triangle me-2"></i>Processing Error</h6>
+                        <p class="mb-0">${escapeHtml(file.processingError)}</p>
+                    </div>
+                `;
+            }
+            
+            if (file.processingErrors && file.processingErrors.length > 0) {
+                html += `
+                    <div class="card">
+                        <div class="card-header">
+                            <h6 class="mb-0">Chunk Errors (${file.processingErrors.length})</h6>
+                        </div>
+                        <div class="card-body" style="max-height: 300px; overflow-y: auto;">
+                `;
+                
+                file.processingErrors.forEach((error, index) => {
+                    html += `
+                        <div class="border-bottom pb-2 mb-2">
+                            <strong>Chunk ${error.chunkIndex + 1}:</strong><br>
+                            <small class="text-danger">${escapeHtml(error.error)}</small><br>
+                            <small class="text-muted">${escapeHtml(error.chunk)}</small>
+                        </div>
+                    `;
+                });
+                
+                html += `
+                        </div>
+                    </div>
+                `;
+            }
+            
+            detailsContent.innerHTML = html;
+        } else {
+            detailsContent.innerHTML = `
+                <div class="alert alert-danger">
+                    <i class="fas fa-exclamation-circle me-2"></i>
+                    Error loading processing details: ${result.error}
+                </div>
+            `;
+        }
+    } catch (error) {
+        console.error('Error loading processing details:', error);
+        document.getElementById('processing-details-content').innerHTML = `
+            <div class="alert alert-danger">
+                <i class="fas fa-exclamation-circle me-2"></i>
+                Error loading processing details: ${error.message}
+            </div>
+        `;
+    }
+}
+
+// Progress monitoring for processing files
+let progressMonitoring = {};
+
+function startProgressMonitoring() {
+    // Find all processing files and start monitoring them
+    const processingCards = document.querySelectorAll('.card');
+    processingCards.forEach(card => {
+        const badge = card.querySelector('.badge');
+        if (badge && badge.textContent && badge.textContent.includes('Processing')) {
+            // Extract file ID from the card's buttons
+            const buttons = card.querySelectorAll('button[onclick*="Details"]');
+            if (buttons.length > 0) {
+                const onclick = buttons[0].getAttribute('onclick');
+                const fileIdMatch = onclick.match(/viewProcessingDetails\('([^']+)'\)/);
+                if (fileIdMatch) {
+                    const fileId = fileIdMatch[1];
+                    startFileProgressMonitoring(fileId);
+                }
+            }
+        }
+    });
+}
+
+function startFileProgressMonitoring(fileId) {
+    if (progressMonitoring[fileId]) {
+        clearInterval(progressMonitoring[fileId]);
+    }
+    
+    console.log(`Starting progress monitoring for file: ${fileId}`);
+    
+    progressMonitoring[fileId] = setInterval(async () => {
+        try {
+            const response = await fetch(`/api/files/${fileId}/progress`);
+            const result = await response.json();
+            
+            if (result.success) {
+                updateProgressDisplay(fileId, result.progress);
+                
+                // Stop monitoring if processing is complete
+                if (result.progress.status !== 'processing') {
+                    clearInterval(progressMonitoring[fileId]);
+                    delete progressMonitoring[fileId];
+                    
+                    // Refresh page to show final status
+                    setTimeout(() => {
+                        location.reload();
+                    }, 2000);
+                }
+            }
+        } catch (error) {
+            console.error('Error checking progress:', error);
+        }
+    }, 2000); // Check every 2 seconds
+}
+
+function updateProgressDisplay(fileId, progress) {
+    console.log('Updating progress for', fileId, progress);
+    
+    // Find the card for this file
+    const cards = document.querySelectorAll('.card');
+    let targetCard = null;
+    
+    cards.forEach(card => {
+        const buttons = card.querySelectorAll('button[onclick*="Details"]');
+        if (buttons.length > 0) {
+            const onclick = buttons[0].getAttribute('onclick');
+            if (onclick.includes(fileId)) {
+                targetCard = card;
+            }
+        }
+    });
+    
+    if (!targetCard) {
+        console.warn('Target card not found for file:', fileId);
+        return;
+    }
+    
+    // Update the badge with progress information
+    const badge = targetCard.querySelector('.badge');
+    if (badge && progress.processingProgress) {
+        const { currentChunk, totalChunks, percentage } = progress.processingProgress;
+        badge.innerHTML = `
+            <i class="fas fa-spinner fa-spin me-1"></i>
+            Processing ${currentChunk}/${totalChunks} (${percentage}%)
+        `;
+        badge.className = 'badge bg-warning text-dark';
+    } else if (badge && progress.status === 'processed') {
+        badge.innerHTML = `<i class="fas fa-check-circle me-1"></i>Processed`;
+        badge.className = 'badge bg-success';
+    } else if (badge && progress.status === 'failed') {
+        badge.innerHTML = `<i class="fas fa-exclamation-triangle me-1"></i>Failed`;
+        badge.className = 'badge bg-danger';
+    }
+    
+    // Update or add progress bar
+    const cardBody = targetCard.querySelector('.card-body');
+    let progressContainer = cardBody.querySelector('.progress-container');
+    
+    if (progress.processingProgress) {
+        if (!progressContainer) {
+            progressContainer = document.createElement('div');
+            progressContainer.className = 'progress-container mt-2';
+            cardBody.appendChild(progressContainer);
+        }
+        
+        const { currentChunk, totalChunks, percentage } = progress.processingProgress;
+        progressContainer.innerHTML = `
+            <div class="progress mb-2" style="height: 8px;">
+                <div class="progress-bar progress-bar-striped progress-bar-animated" 
+                     role="progressbar" 
+                     style="width: ${percentage}%"
+                     aria-valuenow="${percentage}" 
+                     aria-valuemin="0" 
+                     aria-valuemax="100">
+                </div>
+            </div>
+            <small class="text-muted">
+                <i class="fas fa-puzzle-piece me-1"></i>
+                Processing chunk ${currentChunk} of ${totalChunks}
+            </small>
+        `;
+    } else if (progressContainer && (progress.status === 'processed' || progress.status === 'failed')) {
+        // Remove progress bar when processing is complete
+        progressContainer.remove();
+    }
+}
+
+function stopAllProgressMonitoring() {
+    Object.keys(progressMonitoring).forEach(fileId => {
+        clearInterval(progressMonitoring[fileId]);
+        delete progressMonitoring[fileId];
+    });
+}
+
+// Clean up when page unloads
+window.addEventListener('beforeunload', stopAllProgressMonitoring);
+
+// Auto-refresh processing status every 10 seconds for files that are still processing
+document.addEventListener('DOMContentLoaded', function() {
+    // Start progress monitoring for processing files
+    startProgressMonitoring();
+    
+    // Check if there are processing files by looking for badges with "Processing" text
+    const badges = document.querySelectorAll('.badge');
+    let hasProcessingFiles = false;
+    
+    badges.forEach(badge => {
+        if (badge && badge.textContent && badge.textContent.includes('Processing')) {
+            hasProcessingFiles = true;
+        }
+    });
+    
+    if (hasProcessingFiles) {
+        console.log('Found processing files, setting up auto-refresh...');
+        setInterval(() => {
+            // Check again if there are still processing files
+            const currentBadges = document.querySelectorAll('.badge');
+            let stillProcessing = false;
+            
+            currentBadges.forEach(badge => {
+                if (badge && badge.textContent && badge.textContent.includes('Processing')) {
+                    stillProcessing = true;
+                }
+            });
+            
+            if (stillProcessing) {
+                console.log('Still have processing files, refreshing page...');
+                location.reload();
+            }
+        }, 10000); // Check every 10 seconds
+    }
+});
+</script>
+
+<%- include('partials/footer') %>
diff --git a/views/error.ejs b/views/error.ejs
new file mode 100644
index 0000000..c279fc6
--- /dev/null
+++ b/views/error.ejs
@@ -0,0 +1,20 @@
+<%- include('partials/header') %>
+
+<div class="container py-5">
+    <div class="row justify-content-center">
+        <div class="col-lg-6">
+            <div class="card shadow-lg border-0">
+                <div class="card-body text-center py-5">
+                    <i class="fas fa-exclamation-triangle fa-4x text-warning mb-4"></i>
+                    <h2 class="mb-3">Oops! Something went wrong</h2>
+                    <p class="text-muted mb-4"><%= error %></p>
+                    <a href="/" class="btn btn-primary">
+                        <i class="fas fa-home me-2"></i>Go Home
+                    </a>
+                </div>
+            </div>
+        </div>
+    </div>
+</div>
+
+<%- include('partials/footer') %>
diff --git a/views/index.ejs b/views/index.ejs
new file mode 100644
index 0000000..e09a396
--- /dev/null
+++ b/views/index.ejs
@@ -0,0 +1,224 @@
+<%- include('partials/header') %>
+
+<!-- Display flash messages -->
+<% if (messages.error) { %>
+    <div class="alert alert-danger alert-dismissible fade show m-3" role="alert">
+        <i class="fas fa-exclamation-triangle me-2"></i>
+        <%= messages.error %>
+        <button type="button" class="btn-close" data-bs-dismiss="alert"></button>
+    </div>
+<% } %>
+
+<% if (messages.success) { %>
+    <div class="alert alert-success alert-dismissible fade show m-3" role="alert">
+        <i class="fas fa-check-circle me-2"></i>
+        <%= messages.success %>
+        <button type="button" class="btn-close" data-bs-dismiss="alert"></button>
+    </div>
+<% } %>
+
+<div class="hero-section bg-gradient-primary text-white py-5">
+    <div class="container">
+        <div class="row align-items-center">
+            <div class="col-lg-6">
+                <% if (user) { %>
+                    <h1 class="display-4 fw-bold mb-4">Welcome back, <%= user.name %>!</h1>
+                    <p class="lead mb-4">Ready to enhance your study experience? Upload notes, generate AI quizzes, get personalized revision, and chat with our intelligent assistant.</p>
+                    <div class="d-flex gap-3 flex-wrap">
+                        <a href="/upload" class="btn btn-light btn-lg">
+                            <i class="fas fa-upload me-2"></i>Upload Notes
+                        </a>
+                        <a href="/quiz" class="btn btn-outline-light btn-lg">
+                            <i class="fas fa-question-circle me-2"></i>Take Quiz
+                        </a>
+                    </div>
+                <% } else { %>
+                    <h1 class="display-4 fw-bold mb-4">Welcome to EduCat</h1>
+                    <p class="lead mb-4">Transform your study experience with AI-powered note revision, personalized quizzes, and intelligent tutoring. Upload your notes and let our smart system create the perfect study environment for you.</p>
+                    <div class="d-flex gap-3 flex-wrap">
+                        <a href="/login" class="btn btn-light btn-lg">
+                            <i class="fas fa-sign-in-alt me-2"></i>Get Started
+                        </a>
+                        <a href="/register" class="btn btn-outline-light btn-lg">
+                            <i class="fas fa-user-plus me-2"></i>Sign Up Free
+                        </a>
+                    </div>
+                <% } %>
+            </div>
+            <div class="col-lg-6 text-center">
+                <img src="/images/logo.png" alt="EduCat" class="img-fluid" style="max-height: 300px;">
+            </div>
+        </div>
+    </div>
+</div>
+
+<div class="container py-5">
+    <div class="row">
+        <div class="col-md-3 mb-4">
+            <div class="card h-100 border-0 shadow-sm">
+                <div class="card-body text-center">
+                    <div class="feature-icon bg-primary text-white rounded-circle d-inline-flex align-items-center justify-content-center mb-3" style="width: 60px; height: 60px;">
+                        <i class="fas fa-upload fa-2x"></i>
+                    </div>
+                    <h5 class="card-title">Upload Your Notes</h5>
+                    <p class="card-text">Simply upload your study notes in various formats (PDF, DOC, TXT) and let our AI analyze them.</p>
+                    <% if (user) { %>
+                        <a href="/upload" class="btn btn-primary">Get Started</a>
+                    <% } else { %>
+                        <a href="/login" class="btn btn-primary">Get Started</a>
+                    <% } %>
+                </div>
+            </div>
+        </div>
+        <div class="col-md-3 mb-4">
+            <div class="card h-100 border-0 shadow-sm">
+                <div class="card-body text-center">
+                    <div class="feature-icon bg-success text-white rounded-circle d-inline-flex align-items-center justify-content-center mb-3" style="width: 60px; height: 60px;">
+                        <i class="fas fa-brain fa-2x"></i>
+                    </div>
+                    <h5 class="card-title">AI-Powered Revision</h5>
+                    <p class="card-text">Our AI will summarize, improve, and generate study questions from your notes automatically.</p>
+                    <% if (user) { %>
+                        <a href="/dashboard" class="btn btn-success">View Dashboard</a>
+                    <% } else { %>
+                        <a href="/login" class="btn btn-success">View Dashboard</a>
+                    <% } %>
+                </div>
+            </div>
+        </div>
+        <div class="col-md-3 mb-4">
+            <div class="card h-100 border-0 shadow-sm">
+                <div class="card-body text-center">
+                    <div class="feature-icon bg-warning text-white rounded-circle d-inline-flex align-items-center justify-content-center mb-3" style="width: 60px; height: 60px;">
+                        <i class="fas fa-question-circle fa-2x"></i>
+                    </div>
+                    <h5 class="card-title">AI Quiz Generator</h5>
+                    <p class="card-text">Generate personalized quizzes on any topic with multiple question types and difficulty levels.</p>
+                    <% if (user) { %>
+                        <a href="/quiz" class="btn btn-warning">Take Quiz</a>
+                    <% } else { %>
+                        <a href="/login" class="btn btn-warning">Take Quiz</a>
+                    <% } %>
+                </div>
+            </div>
+        </div>
+        <div class="col-md-3 mb-4">
+            <div class="card h-100 border-0 shadow-sm">
+                <div class="card-body text-center">
+                    <div class="feature-icon bg-info text-white rounded-circle d-inline-flex align-items-center justify-content-center mb-3" style="width: 60px; height: 60px;">
+                        <i class="fas fa-comments fa-2x"></i>
+                    </div>
+                    <h5 class="card-title">Interactive Chat</h5>
+                    <p class="card-text">Ask questions about your notes and get instant, intelligent responses from our AI assistant.</p>
+                    <% if (user) { %>
+                        <a href="/chat" class="btn btn-info">Start Chatting</a>
+                    <% } else { %>
+                        <a href="/login" class="btn btn-info">Start Chatting</a>
+                    <% } %>
+                </div>
+            </div>
+        </div>
+    </div>
+</div>
+
+<!-- Quiz Section -->
+<div class="bg-gradient-warning py-5">
+    <div class="container">
+        <div class="row align-items-center">
+            <div class="col-lg-6">
+                <h2 class="display-5 fw-bold text-white mb-4">Test Your Knowledge</h2>
+                <p class="lead text-white mb-4">Generate personalized quizzes on any topic with our AI-powered quiz generator. Choose from multiple question types and difficulty levels to challenge yourself.</p>
+                <div class="quiz-features mb-4">
+                    <div class="d-flex align-items-center text-white mb-2">
+                        <i class="fas fa-check-circle me-3"></i>
+                        <span>Multiple choice questions</span>
+                    </div>
+                    <div class="d-flex align-items-center text-white mb-2">
+                        <i class="fas fa-check-circle me-3"></i>
+                        <span>True/False questions</span>
+                    </div>
+                    <div class="d-flex align-items-center text-white mb-2">
+                        <i class="fas fa-check-circle me-3"></i>
+                        <span>Instant feedback and scoring</span>
+                    </div>
+                    <div class="d-flex align-items-center text-white mb-2">
+                        <i class="fas fa-check-circle me-3"></i>
+                        <span>Customizable difficulty levels</span>
+                    </div>
+                </div>
+                <% if (user) { %>
+                    <a href="/quiz" class="btn btn-light btn-lg">
+                        <i class="fas fa-question-circle me-2"></i>Start Quiz
+                    </a>
+                <% } else { %>
+                    <a href="/login" class="btn btn-light btn-lg">
+                        <i class="fas fa-sign-in-alt me-2"></i>Login to Start
+                    </a>
+                <% } %>
+            </div>
+            <div class="col-lg-6 text-center">
+                <div class="quiz-preview bg-white rounded-3 shadow-lg p-4 mx-auto" style="max-width: 400px;">
+                    <h6 class="text-primary mb-3">Sample Quiz Question</h6>
+                    <div class="quiz-question mb-3">
+                        <p class="fw-bold mb-3">What is the capital of France?</p>
+                        <div class="quiz-options">
+                            <div class="form-check text-start mb-2">
+                                <input class="form-check-input" type="radio" name="sample" disabled>
+                                <label class="form-check-label">London</label>
+                            </div>
+                            <div class="form-check text-start mb-2">
+                                <input class="form-check-input" type="radio" name="sample" checked disabled>
+                                <label class="form-check-label">Paris ✓</label>
+                            </div>
+                            <div class="form-check text-start mb-2">
+                                <input class="form-check-input" type="radio" name="sample" disabled>
+                                <label class="form-check-label">Berlin</label>
+                            </div>
+                            <div class="form-check text-start">
+                                <input class="form-check-input" type="radio" name="sample" disabled>
+                                <label class="form-check-label">Madrid</label>
+                            </div>
+                        </div>
+                    </div>
+                    <div class="text-success small">
+                        <i class="fas fa-check me-1"></i>Correct! Great job.
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
+</div>
+
+<div class="bg-light py-5">
+    <div class="container">
+        <div class="row">
+            <div class="col-lg-10 mx-auto text-center">
+                <h2 class="mb-4">How EduCat Works</h2>
+                <div class="row">
+                    <div class="col-md-3">
+                        <div class="step-number bg-primary text-white rounded-circle d-inline-flex align-items-center justify-content-center mb-3" style="width: 50px; height: 50px;">1</div>
+                        <h6>Upload</h6>
+                        <p class="text-muted">Upload your study notes in any supported format</p>
+                    </div>
+                    <div class="col-md-3">
+                        <div class="step-number bg-primary text-white rounded-circle d-inline-flex align-items-center justify-content-center mb-3" style="width: 50px; height: 50px;">2</div>
+                        <h6>AI Analysis</h6>
+                        <p class="text-muted">Our AI analyzes and processes your content</p>
+                    </div>
+                    <div class="col-md-3">
+                        <div class="step-number bg-primary text-white rounded-circle d-inline-flex align-items-center justify-content-center mb-3" style="width: 50px; height: 50px;">3</div>
+                        <h6>Take Quizzes</h6>
+                        <p class="text-muted">Generate personalized quizzes to test your knowledge</p>
+                    </div>
+                    <div class="col-md-3">
+                        <div class="step-number bg-primary text-white rounded-circle d-inline-flex align-items-center justify-content-center mb-3" style="width: 50px; height: 50px;">4</div>
+                        <h6>Get Results</h6>
+                        <p class="text-muted">Receive improved notes, summaries, and instant feedback</p>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
+</div>
+
+<%- include('partials/footer') %>
diff --git a/views/layout.ejs b/views/layout.ejs
new file mode 100644
index 0000000..eb1c198
--- /dev/null
+++ b/views/layout.ejs
@@ -0,0 +1,61 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title><%= title %></title>
+    <link href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap/5.3.0/css/bootstrap.min.css" rel="stylesheet">
+    <link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css" rel="stylesheet">
+    <link href="/css/style.css" rel="stylesheet">
+</head>
+<body>
+    <nav class="navbar navbar-expand-lg navbar-dark bg-primary">
+        <div class="container">
+            <a class="navbar-brand d-flex align-items-center" href="/">
+                <img src="/images/logo.png" alt="EduCat Logo" height="40" class="me-2">
+                <span class="fw-bold">EduCat</span>
+            </a>
+            <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav">
+                <span class="navbar-toggler-icon"></span>
+            </button>
+            <div class="collapse navbar-collapse" id="navbarNav">
+                <ul class="navbar-nav ms-auto">
+                    <li class="nav-item">
+                        <a class="nav-link" href="/"><i class="fas fa-home"></i> Home</a>
+                    </li>
+                    <li class="nav-item">
+                        <a class="nav-link" href="/upload"><i class="fas fa-upload"></i> Upload Notes</a>
+                    </li>
+                    <li class="nav-item">
+                        <a class="nav-link" href="/dashboard"><i class="fas fa-tachometer-alt"></i> Dashboard</a>
+                    </li>
+                    <li class="nav-item">
+                        <a class="nav-link" href="/chat"><i class="fas fa-comments"></i> Chat</a>
+                    </li>
+                </ul>
+            </div>
+        </div>
+    </nav>
+
+    <main class="container-fluid">
+        <%- body %>
+    </main>
+
+    <footer class="bg-dark text-light py-4 mt-5">
+        <div class="container">
+            <div class="row">
+                <div class="col-md-6">
+                    <h5>EduCat</h5>
+                    <p>AI-powered note revision platform for students</p>
+                </div>
+                <div class="col-md-6 text-end">
+                    <p>&copy; 2025 EduCat. All rights reserved.</p>
+                </div>
+            </div>
+        </div>
+    </footer>
+
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap/5.3.0/js/bootstrap.bundle.min.js"></script>
+    <script src="/js/main.js"></script>
+</body>
+</html>
diff --git a/views/login.ejs b/views/login.ejs
new file mode 100644
index 0000000..593f1bc
--- /dev/null
+++ b/views/login.ejs
@@ -0,0 +1,151 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title><%= title %></title>
+    <link href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap/5.3.0/css/bootstrap.min.css" rel="stylesheet">
+    <link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css" rel="stylesheet">
+    <link href="/css/style.css" rel="stylesheet">
+</head>
+<body class="bg-light">
+    <nav class="navbar navbar-expand-lg navbar-dark bg-primary">
+        <div class="container">
+            <a class="navbar-brand d-flex align-items-center" href="/">
+                <img src="/images/logo.png" alt="EduCat Logo" height="40" class="me-2">
+                <span class="fw-bold">EduCat</span>
+            </a>
+        </div>
+    </nav>
+
+<div class="container-fluid vh-100 d-flex align-items-center justify-content-center bg-light">
+    <div class="row w-100">
+        <div class="col-md-6 col-lg-4 mx-auto">
+            <div class="card shadow-lg border-0">
+                <div class="card-body p-5">
+                    <div class="text-center mb-4">
+                        <img src="/images/logo.png" alt="EduCat Logo" height="80" class="mb-3">
+                        <h2 class="mb-2">Welcome Back!</h2>
+                        <p class="text-muted">Sign in to your EduCat account</p>
+                    </div>
+
+                    <!-- Display flash messages -->
+                    <% if (messages.error) { %>
+                        <div class="alert alert-danger alert-dismissible fade show" role="alert">
+                            <i class="fas fa-exclamation-triangle me-2"></i>
+                            <%= messages.error %>
+                            <button type="button" class="btn-close" data-bs-dismiss="alert"></button>
+                        </div>
+                    <% } %>
+                    
+                    <% if (messages.success) { %>
+                        <div class="alert alert-success alert-dismissible fade show" role="alert">
+                            <i class="fas fa-check-circle me-2"></i>
+                            <%= messages.success %>
+                            <button type="button" class="btn-close" data-bs-dismiss="alert"></button>
+                        </div>
+                    <% } %>
+
+                    <form action="/login" method="POST" id="loginForm">
+                        <div class="mb-3">
+                            <label for="username" class="form-label">Username or Email</label>
+                            <div class="input-group">
+                                <span class="input-group-text">
+                                    <i class="fas fa-user"></i>
+                                </span>
+                                <input type="text" class="form-control" id="username" name="username" required>
+                            </div>
+                        </div>
+                        
+                        <div class="mb-3">
+                            <label for="password" class="form-label">Password</label>
+                            <div class="input-group">
+                                <span class="input-group-text">
+                                    <i class="fas fa-lock"></i>
+                                </span>
+                                <input type="password" class="form-control" id="password" name="password" required>
+                                <button type="button" class="btn btn-outline-secondary" onclick="togglePassword()">
+                                    <i class="fas fa-eye" id="toggleIcon"></i>
+                                </button>
+                            </div>
+                        </div>
+                        
+                        <div class="d-grid gap-2 mb-3">
+                            <button type="submit" class="btn btn-primary btn-lg" id="loginBtn">
+                                <i class="fas fa-sign-in-alt me-2"></i>Sign In
+                            </button>
+                        </div>
+                    </form>
+                    
+                    <div class="text-center">
+                        <p class="text-muted">Don't have an account? 
+                            <a href="/register" class="text-primary text-decoration-none">Sign up here</a>
+                        </p>
+                    </div>
+                </div>
+            </div>
+            
+            <div class="card mt-3 border-0 shadow-sm">
+                <div class="card-body text-center">
+                    <h6 class="text-muted mb-3">Demo Accounts</h6>
+                    <div class="row">
+                        <div class="col-6">
+                            <small class="text-muted">
+                                <strong>Admin:</strong><br>
+                                Username: admin<br>
+                                Password: password
+                            </small>
+                        </div>
+                        <div class="col-6">
+                            <small class="text-muted">
+                                <strong>Student:</strong><br>
+                                Username: student<br>
+                                Password: password
+                            </small>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
+</div>
+
+<script>
+function togglePassword() {
+    const passwordInput = document.getElementById('password');
+    const toggleIcon = document.getElementById('toggleIcon');
+    
+    if (passwordInput.type === 'password') {
+        passwordInput.type = 'text';
+        toggleIcon.classList.remove('fa-eye');
+        toggleIcon.classList.add('fa-eye-slash');
+    } else {
+        passwordInput.type = 'password';
+        toggleIcon.classList.remove('fa-eye-slash');
+        toggleIcon.classList.add('fa-eye');
+    }
+}
+
+// Form validation and submission handling
+document.getElementById('loginForm').addEventListener('submit', function(e) {
+    const username = document.getElementById('username').value.trim();
+    const password = document.getElementById('password').value;
+    const loginBtn = document.getElementById('loginBtn');
+    
+    if (!username || !password) {
+        e.preventDefault();
+        alert('Please fill in all fields');
+        return;
+    }
+    
+    // Show loading state
+    loginBtn.innerHTML = '<span class="spinner-border spinner-border-sm me-2" role="status" aria-hidden="true"></span>Signing In...';
+    loginBtn.disabled = true;
+    
+    // Form will submit normally, loading state will be cleared when page changes
+});
+</script>
+
+<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap/5.3.0/js/bootstrap.bundle.min.js"></script>
+</body>
+</html>
diff --git a/views/partials/footer.ejs b/views/partials/footer.ejs
new file mode 100644
index 0000000..57ed1cd
--- /dev/null
+++ b/views/partials/footer.ejs
@@ -0,0 +1,18 @@
+    <footer class="bg-dark text-light py-4 mt-5">
+        <div class="container">
+            <div class="row">
+                <div class="col-md-6">
+                    <h5>EduCat</h5>
+                    <p>AI-powered note revision platform for students</p>
+                </div>
+                <div class="col-md-6 text-end">
+                    <p>&copy; 2025 EduCat. All rights reserved.</p>
+                </div>
+            </div>
+        </div>
+    </footer>
+
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap/5.3.0/js/bootstrap.bundle.min.js"></script>
+    <script src="/js/main.js"></script>
+</body>
+</html>
diff --git a/views/partials/header.ejs b/views/partials/header.ejs
new file mode 100644
index 0000000..8563293
--- /dev/null
+++ b/views/partials/header.ejs
@@ -0,0 +1,64 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title><%= title %></title>
+    <link href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap/5.3.0/css/bootstrap.min.css" rel="stylesheet">
+    <link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css" rel="stylesheet">
+    <link href="/css/style.css" rel="stylesheet">
+</head>
+<body>
+    <nav class="navbar navbar-expand-lg navbar-dark bg-primary">
+        <div class="container">
+            <a class="navbar-brand d-flex align-items-center" href="/">
+                <img src="/images/logo.png" alt="EduCat Logo" height="40" class="me-2">
+                <span class="fw-bold">EduCat</span>
+            </a>
+            <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav">
+                <span class="navbar-toggler-icon"></span>
+            </button>
+            <div class="collapse navbar-collapse" id="navbarNav">
+                <ul class="navbar-nav ms-auto">
+                    <li class="nav-item">
+                        <a class="nav-link" href="/"><i class="fas fa-home"></i> Home</a>
+                    </li>
+                    <% if (user) { %>
+                        <li class="nav-item">
+                            <a class="nav-link" href="/upload"><i class="fas fa-upload"></i> Upload Notes</a>
+                        </li>
+                        <li class="nav-item">
+                            <a class="nav-link" href="/dashboard"><i class="fas fa-tachometer-alt"></i> Dashboard</a>
+                        </li>
+                        <li class="nav-item">
+                            <a class="nav-link" href="/quiz"><i class="fas fa-question-circle"></i> Quiz</a>
+                        </li>
+                        <li class="nav-item">
+                            <a class="nav-link" href="/quiz-history"><i class="fas fa-history"></i> History</a>
+                        </li>
+                        <li class="nav-item">
+                            <a class="nav-link" href="/chat"><i class="fas fa-comments"></i> Chat</a>
+                        </li>
+                        <li class="nav-item dropdown">
+                            <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-bs-toggle="dropdown">
+                                <i class="fas fa-user"></i> <%= user.name %>
+                            </a>
+                            <ul class="dropdown-menu">
+                                <li><a class="dropdown-item" href="/dashboard"><i class="fas fa-tachometer-alt me-2"></i>Dashboard</a></li>
+                                <li><a class="dropdown-item" href="/quiz-history"><i class="fas fa-history me-2"></i>Quiz History</a></li>
+                                <li><hr class="dropdown-divider"></li>
+                                <li><a class="dropdown-item" href="/logout"><i class="fas fa-sign-out-alt me-2"></i>Logout</a></li>
+                            </ul>
+                        </li>
+                    <% } else { %>
+                        <li class="nav-item">
+                            <a class="nav-link" href="/login"><i class="fas fa-sign-in-alt"></i> Login</a>
+                        </li>
+                        <li class="nav-item">
+                            <a class="nav-link" href="/register"><i class="fas fa-user-plus"></i> Register</a>
+                        </li>
+                    <% } %>
+                </ul>
+            </div>
+        </div>
+    </nav>
diff --git a/views/quiz-history.ejs b/views/quiz-history.ejs
new file mode 100644
index 0000000..d2247cf
--- /dev/null
+++ b/views/quiz-history.ejs
@@ -0,0 +1,549 @@
+<%- include('partials/header') %>
+
+<div class="container py-5">
+    <div class="row">
+        <div class="col-12">
+            <h2 class="mb-4"><i class="fas fa-history me-2"></i>Quiz History</h2>
+        </div>
+    </div>
+    
+    <!-- Statistics Cards -->
+    <div class="row mb-4" id="stats-cards">
+        <div class="col-md-3">
+            <div class="card bg-primary text-white">
+                <div class="card-body text-center">
+                    <i class="fas fa-list-ol fa-2x mb-2"></i>
+                    <h4 id="total-quizzes">-</h4>
+                    <p class="mb-0">Total Quizzes</p>
+                </div>
+            </div>
+        </div>
+        <div class="col-md-3">
+            <div class="card bg-success text-white">
+                <div class="card-body text-center">
+                    <i class="fas fa-chart-line fa-2x mb-2"></i>
+                    <h4 id="average-score">-%</h4>
+                    <p class="mb-0">Average Score</p>
+                </div>
+            </div>
+        </div>
+        <div class="col-md-3">
+            <div class="card bg-warning text-white">
+                <div class="card-body text-center">
+                    <i class="fas fa-trophy fa-2x mb-2"></i>
+                    <h4 id="best-score">-%</h4>
+                    <p class="mb-0">Best Score</p>
+                </div>
+            </div>
+        </div>
+        <div class="col-md-3">
+            <div class="card bg-info text-white">
+                <div class="card-body text-center">
+                    <i class="fas fa-brain fa-2x mb-2"></i>
+                    <h4 id="favorite-topic">-</h4>
+                    <p class="mb-0">Favorite Topic</p>
+                </div>
+            </div>
+        </div>
+    </div>
+    
+    <!-- Progress Chart -->
+    <div class="row mb-4">
+        <div class="col-12">
+            <div class="card">
+                <div class="card-header">
+                    <h5 class="mb-0"><i class="fas fa-chart-bar me-2"></i>Progress Over Time</h5>
+                </div>
+                <div class="card-body">
+                    <canvas id="progressChart" width="400" height="200"></canvas>
+                </div>
+            </div>
+        </div>
+    </div>
+    
+    <!-- Topic Statistics -->
+    <div class="row mb-4">
+        <div class="col-12">
+            <div class="card">
+                <div class="card-header">
+                    <h5 class="mb-0"><i class="fas fa-tags me-2"></i>Performance by Topic</h5>
+                </div>
+                <div class="card-body">
+                    <div id="topic-stats" class="row">
+                        <!-- Topic stats will be populated by JavaScript -->
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
+    
+    <!-- Quiz History Table -->
+    <div class="row">
+        <div class="col-12">
+            <div class="card">
+                <div class="card-header d-flex justify-content-between align-items-center">
+                    <h5 class="mb-0"><i class="fas fa-table me-2"></i>All Quiz Results</h5>
+                    <% if (quizResults.length > 0) { %>
+                        <button class="btn btn-outline-danger btn-sm" onclick="clearHistory()">
+                            <i class="fas fa-trash me-2"></i>Clear History
+                        </button>
+                    <% } %>
+                </div>
+                <div class="card-body">
+                    <% if (quizResults.length === 0) { %>
+                        <div class="text-center py-5">
+                            <i class="fas fa-clipboard-list fa-4x text-muted mb-3"></i>
+                            <h4 class="text-muted">No Quiz History Yet</h4>
+                            <p class="text-muted mb-4">Take your first quiz to see your results here!</p>
+                            <a href="/quiz" class="btn btn-primary">
+                                <i class="fas fa-plus me-2"></i>Take Your First Quiz
+                            </a>
+                        </div>
+                    <% } else { %>
+                        <div class="table-responsive">
+                            <table class="table table-hover">
+                                <thead>
+                                    <tr>
+                                        <th><i class="fas fa-calendar me-2"></i>Date</th>
+                                        <th><i class="fas fa-book me-2"></i>Topic</th>
+                                        <th><i class="fas fa-layer-group me-2"></i>Difficulty</th>
+                                        <th><i class="fas fa-question-circle me-2"></i>Type</th>
+                                        <th><i class="fas fa-chart-pie me-2"></i>Score</th>
+                                        <th><i class="fas fa-percentage me-2"></i>Percentage</th>
+                                        <th><i class="fas fa-medal me-2"></i>Grade</th>
+                                        <th><i class="fas fa-eye me-2"></i>Actions</th>
+                                    </tr>
+                                </thead>
+                                <tbody>
+                                    <% quizResults.forEach(function(quiz) { %>
+                                        <% 
+                                            let grade = 'F';
+                                            let badgeClass = 'bg-danger';
+                                            if (quiz.percentage >= 90) { grade = 'A'; badgeClass = 'bg-success'; }
+                                            else if (quiz.percentage >= 80) { grade = 'B'; badgeClass = 'bg-info'; }
+                                            else if (quiz.percentage >= 70) { grade = 'C'; badgeClass = 'bg-warning'; }
+                                            else if (quiz.percentage >= 60) { grade = 'D'; badgeClass = 'bg-warning'; }
+                                        %>
+                                        <tr>
+                                            <td><%= new Date(quiz.date).toLocaleDateString() %></td>
+                                            <td>
+                                                <span class="badge bg-secondary"><%= quiz.topic %></span>
+                                            </td>
+                                            <td>
+                                                <span class="badge bg-primary"><%= quiz.difficulty || 'unknown' %></span>
+                                            </td>
+                                            <td><%= quiz.quizType || 'multiple-choice' %></td>
+                                            <td><%= quiz.score %>/<%= quiz.total %></td>
+                                            <td>
+                                                <div class="progress" style="height: 20px;">
+                                                    <div class="progress-bar bg-success" role="progressbar" 
+                                                         style="width: <%= quiz.percentage %>%"
+                                                         aria-valuenow="<%= quiz.percentage %>" 
+                                                         aria-valuemin="0" aria-valuemax="100">
+                                                        <%= quiz.percentage %>%
+                                                    </div>
+                                                </div>
+                                            </td>
+                                            <td>
+                                                <span class="badge <%= badgeClass %>"><%= grade %></span>
+                                            </td>
+                                            <td>
+                                                <button class="btn btn-sm btn-outline-primary" 
+                                                        onclick="viewQuizDetails('<%= quiz.id %>')">
+                                                    <i class="fas fa-eye"></i>
+                                                </button>
+                                            </td>
+                                        </tr>
+                                    <% }); %>
+                                </tbody>
+                            </table>
+                        </div>
+                    <% } %>
+                </div>
+            </div>
+        </div>
+    </div>
+</div>
+
+<!-- Quiz Details Modal -->
+<div class="modal fade" id="quizDetailsModal" tabindex="-1">
+    <div class="modal-dialog modal-xl">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title">Quiz Details</h5>
+                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
+            </div>
+            <div class="modal-body" id="quizDetailsContent" style="max-height: 70vh; overflow-y: auto;">
+                <!-- Quiz details will be loaded here -->
+            </div>
+        </div>
+    </div>
+</div>
+
+<script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
+<script>
+document.addEventListener('DOMContentLoaded', function() {
+    loadQuizStatistics();
+});
+
+async function loadQuizStatistics() {
+    try {
+        const response = await fetch('/api/quiz-stats');
+        const data = await response.json();
+        
+        if (data.success) {
+            updateStatisticsCards(data.stats);
+            createProgressChart(data.stats.progressChart);
+            displayTopicStats(data.stats.topicStats);
+        }
+    } catch (error) {
+        console.error('Error loading quiz statistics:', error);
+    }
+}
+
+function updateStatisticsCards(stats) {
+    document.getElementById('total-quizzes').textContent = stats.totalQuizzes;
+    document.getElementById('average-score').textContent = stats.averageScore + '%';
+    document.getElementById('best-score').textContent = stats.bestScore + '%';
+    
+    // Find favorite topic (most quizzes taken)
+    let favoriteTopicName = '-';
+    let maxCount = 0;
+    Object.keys(stats.topicStats).forEach(topic => {
+        if (stats.topicStats[topic].count > maxCount) {
+            maxCount = stats.topicStats[topic].count;
+            favoriteTopicName = topic;
+        }
+    });
+    document.getElementById('favorite-topic').textContent = favoriteTopicName;
+}
+
+let progressChartInstance = null;
+
+function createProgressChart(progressData) {
+    const ctx = document.getElementById('progressChart').getContext('2d');
+    
+    // Destroy existing chart if it exists
+    if (progressChartInstance) {
+        progressChartInstance.destroy();
+    }
+    
+    if (progressData.length === 0) {
+        ctx.font = '16px Arial';
+        ctx.fillStyle = '#6c757d';
+        ctx.textAlign = 'center';
+        ctx.fillText('No quiz data available yet', ctx.canvas.width / 2, ctx.canvas.height / 2);
+        return;
+    }
+    
+    progressChartInstance = new Chart(ctx, {
+        type: 'line',
+        data: {
+            labels: progressData.map((_, index) => `Quiz ${index + 1}`),
+            datasets: [{
+                label: 'Score (%)',
+                data: progressData.map(quiz => quiz.score),
+                borderColor: 'rgb(75, 192, 192)',
+                backgroundColor: 'rgba(75, 192, 192, 0.2)',
+                tension: 0.1
+            }]
+        },
+        options: {
+            responsive: true,
+            scales: {
+                y: {
+                    beginAtZero: true,
+                    max: 100,
+                    ticks: {
+                        callback: function(value) {
+                            return value + '%';
+                        }
+                    }
+                }
+            },
+            plugins: {
+                title: {
+                    display: true,
+                    text: 'Your Quiz Performance Over Time'
+                }
+            }
+        }
+    });
+}
+
+function displayTopicStats(topicStats) {
+    const container = document.getElementById('topic-stats');
+    
+    if (Object.keys(topicStats).length === 0) {
+        container.innerHTML = '<div class="col-12 text-center text-muted">No topic data available yet</div>';
+        return;
+    }
+    
+    let html = '';
+    Object.keys(topicStats).forEach(topic => {
+        const stats = topicStats[topic];
+        html += `
+            <div class="col-md-4 mb-3">
+                <div class="card">
+                    <div class="card-body">
+                        <h6 class="card-title">${topic}</h6>
+                        <p class="card-text">
+                            <small class="text-muted">Quizzes taken: ${stats.count}</small><br>
+                            <small class="text-muted">Average: ${stats.averageScore}%</small><br>
+                            <small class="text-muted">Best: ${stats.bestScore}%</small>
+                        </p>
+                        <div class="progress" style="height: 10px;">
+                            <div class="progress-bar" style="width: ${stats.averageScore}%"></div>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        `;
+    });
+    container.innerHTML = html;
+}
+
+async function viewQuizDetails(quizId) {
+    try {
+        // Show loading spinner
+        document.getElementById('quizDetailsContent').innerHTML = `
+            <div class="text-center">
+                <div class="spinner-border text-primary" role="status">
+                    <span class="visually-hidden">Loading...</span>
+                </div>
+                <p class="mt-2">Loading quiz details...</p>
+            </div>
+        `;
+        
+        // Show modal first
+        new bootstrap.Modal(document.getElementById('quizDetailsModal')).show();
+        
+        // Fetch quiz details
+        const response = await fetch(`/api/quiz-details/${quizId}`);
+        const data = await response.json();
+        
+        if (!data.success) {
+            throw new Error(data.error || 'Failed to load quiz details');
+        }
+        
+        const quiz = data.quiz;
+        const correctAnswers = quiz.results.filter(r => r.isCorrect).length;
+        const totalQuestions = quiz.results.length;
+        
+        // Helper function to escape HTML
+        function escapeHtml(text) {
+            const div = document.createElement('div');
+            div.textContent = text;
+            return div.innerHTML;
+        }
+        
+        let html = `
+            <div class="mb-4">
+                <h6 class="text-muted">Quiz Overview</h6>
+                <div class="row">
+                    <div class="col-md-3">
+                        <strong>Topic:</strong><br>
+                        <span class="badge bg-primary">${escapeHtml(quiz.topic)}</span>
+                    </div>
+                    <div class="col-md-3">
+                        <strong>Score:</strong><br>
+                        <span class="badge bg-${quiz.percentage >= 70 ? 'success' : quiz.percentage >= 50 ? 'warning' : 'danger'}">
+                            ${quiz.percentage}%
+                        </span>
+                    </div>
+                    <div class="col-md-3">
+                        <strong>Correct:</strong><br>
+                        ${correctAnswers} / ${totalQuestions}
+                    </div>
+                    <div class="col-md-3">
+                        <strong>Date:</strong><br>
+                        ${new Date(quiz.date).toLocaleDateString()}
+                    </div>
+                </div>
+                <div class="row mt-3">
+                    <div class="col-md-6">
+                        <strong>Difficulty:</strong><br>
+                        <span class="badge bg-info">${escapeHtml(quiz.difficulty)}</span>
+                    </div>
+                    <div class="col-md-6">
+                        <strong>Quiz Type:</strong><br>
+                        <span class="badge bg-secondary">${escapeHtml(quiz.quizType)}</span>
+                    </div>
+                </div>
+            </div>
+            
+            <h6 class="text-muted mb-3">Question-by-Question Results</h6>
+            <div class="quiz-questions">
+        `;
+        
+        quiz.results.forEach((result, index) => {
+            html += `
+                <div class="card mb-3 ${result.isCorrect ? 'border-success' : 'border-danger'}">
+                    <div class="card-header d-flex justify-content-between align-items-center">
+                        <h6 class="mb-0">Question ${index + 1}</h6>
+                        <span class="badge bg-${result.isCorrect ? 'success' : 'danger'}">
+                            ${result.isCorrect ? 'Correct' : 'Incorrect'}
+                        </span>
+                    </div>
+                    <div class="card-body">
+                        <p class="mb-3"><strong>Question:</strong> ${escapeHtml(result.question)}</p>
+                        
+                        ${result.options ? `
+                            <div class="mb-3">
+                                <strong>Options:</strong>
+                                <ul class="list-unstyled mt-2">
+                                    ${result.options.map(option => `
+                                        <li class="mb-1">
+                                            <span class="badge bg-light text-dark me-2">${escapeHtml(option)}</span>
+                                            ${option === result.userAnswer ? '<i class="fas fa-arrow-left text-primary" title="Your answer"></i>' : ''}
+                                            ${option === result.correctAnswer ? '<i class="fas fa-check text-success" title="Correct answer"></i>' : ''}
+                                        </li>
+                                    `).join('')}
+                                </ul>
+                            </div>
+                        ` : ''}
+                        
+                        <p class="mb-2"><strong>Your Answer:</strong></p>
+                        <div class="alert alert-${result.isCorrect ? 'success' : 'danger'} py-2">
+                            ${escapeHtml(result.userAnswer || 'No answer provided')}
+                        </div>
+                        
+                        ${!result.isCorrect && result.correctAnswer ? `
+                            <p class="mb-2"><strong>Correct Answer:</strong></p>
+                            <div class="alert alert-success py-2">
+                                ${escapeHtml(result.correctAnswer)}
+                            </div>
+                        ` : ''}
+                        
+                        ${result.explanation ? `
+                            <p class="mb-2"><strong>Explanation:</strong></p>
+                            <div class="alert alert-info py-2">
+                                ${escapeHtml(result.explanation)}
+                            </div>
+                        ` : ''}
+                    </div>
+                </div>
+            `;
+        });
+        
+        html += `</div>`;
+        
+        document.getElementById('quizDetailsContent').innerHTML = html;
+        
+    } catch (error) {
+        console.error('Error loading quiz details:', error);
+        document.getElementById('quizDetailsContent').innerHTML = `
+            <div class="alert alert-danger">
+                <i class="fas fa-exclamation-triangle me-2"></i>
+                Failed to load quiz details. Please try again.
+            </div>
+        `;
+    }
+}
+
+async function clearHistory() {
+    if (confirm('Are you sure you want to clear all quiz history? This action cannot be undone.')) {
+        try {
+            // Show loading state
+            const clearBtn = document.querySelector('button[onclick="clearHistory()"]');
+            const originalText = clearBtn.innerHTML;
+            clearBtn.innerHTML = '<i class="fas fa-spinner fa-spin me-2"></i>Clearing...';
+            clearBtn.disabled = true;
+            
+            const response = await fetch('/api/quiz-history', {
+                method: 'DELETE',
+                headers: {
+                    'Content-Type': 'application/json',
+                }
+            });
+            
+            const result = await response.json();
+            
+            if (result.success) {
+                // Show success message
+                alert('Quiz history cleared successfully!');
+                
+                // Clear the statistics cards
+                document.getElementById('total-quizzes').textContent = '0';
+                document.getElementById('average-score').textContent = '0%';
+                document.getElementById('best-score').textContent = '0%';
+                document.getElementById('favorite-topic').textContent = 'None';
+                
+                // Clear the topic statistics section
+                const topicStats = document.getElementById('topic-stats');
+                if (topicStats) {
+                    topicStats.innerHTML = `
+                        <div class="col-12 text-center py-4">
+                            <i class="fas fa-chart-bar fa-3x text-muted mb-3"></i>
+                            <h5 class="text-muted">No Topic Data Available</h5>
+                            <p class="text-muted">Take quizzes to see performance by topic.</p>
+                        </div>
+                    `;
+                }
+                
+                // Clear the quiz results table - find the card body that contains the table
+                const tableCards = document.querySelectorAll('.card');
+                for (let card of tableCards) {
+                    const cardHeader = card.querySelector('.card-header h5');
+                    if (cardHeader && cardHeader.textContent.includes('All Quiz Results')) {
+                        const cardBody = card.querySelector('.card-body');
+                        if (cardBody) {
+                            cardBody.innerHTML = `
+                                <div class="text-center py-5">
+                                    <i class="fas fa-clipboard-list fa-4x text-muted mb-3"></i>
+                                    <h4 class="text-muted">No Quiz History Yet</h4>
+                                    <p class="text-muted mb-4">Take your first quiz to see your results here!</p>
+                                    <a href="/quiz" class="btn btn-primary">
+                                        <i class="fas fa-plus me-2"></i>Take Your First Quiz
+                                    </a>
+                                </div>
+                            `;
+                        }
+                        
+                        // Also update the card header to remove the clear button
+                        const cardHeader = card.querySelector('.card-header');
+                        if (cardHeader) {
+                            cardHeader.innerHTML = '<h5 class="mb-0"><i class="fas fa-table me-2"></i>All Quiz Results</h5>';
+                        }
+                        break;
+                    }
+                }
+                
+                // Clear the progress chart
+                if (progressChartInstance) {
+                    progressChartInstance.destroy();
+                    progressChartInstance = null;
+                }
+                
+                // Clear the progress chart canvas and show no data message
+                const progressChartCanvas = document.getElementById('progressChart');
+                if (progressChartCanvas) {
+                    const ctx = progressChartCanvas.getContext('2d');
+                    ctx.clearRect(0, 0, progressChartCanvas.width, progressChartCanvas.height);
+                    ctx.font = '16px Arial';
+                    ctx.fillStyle = '#6c757d';
+                    ctx.textAlign = 'center';
+                    ctx.fillText('No quiz data available yet', progressChartCanvas.width / 2, progressChartCanvas.height / 2);
+                }
+                
+            } else {
+                alert('Error clearing history: ' + (result.error || 'Unknown error'));
+                clearBtn.innerHTML = originalText;
+                clearBtn.disabled = false;
+            }
+        } catch (error) {
+            console.error('Error clearing quiz history:', error);
+            alert('Error clearing history: ' + error.message);
+            
+            // Reset button on error
+            const clearBtn = document.querySelector('button[onclick="clearHistory()"]');
+            if (clearBtn) {
+                clearBtn.innerHTML = '<i class="fas fa-trash me-2"></i>Clear History';
+                clearBtn.disabled = false;
+            }
+        }
+    }
+}
+</script>
+
+<%- include('partials/footer') %>
diff --git a/views/quiz.ejs b/views/quiz.ejs
new file mode 100644
index 0000000..4ee6392
--- /dev/null
+++ b/views/quiz.ejs
@@ -0,0 +1,642 @@
+<%- include('partials/header') %>
+
+<div class="container py-5">
+    <div class="row">
+        <div class="col-12">
+            <h2 class="mb-4"><i class="fas fa-question-circle me-2"></i>AI Quiz Generator</h2>
+        </div>
+    </div>
+    
+    <!-- Quiz Generator Form -->
+    <div id="quiz-generator" class="row">
+        <div class="col-lg-8">
+            <div class="card shadow-sm border-0">
+                <div class="card-header bg-primary text-white">
+                    <h4 class="mb-0"><i class="fas fa-cogs me-2"></i>Generate New Quiz</h4>
+                </div>
+                <div class="card-body">
+                    <form id="quizForm">
+                        <div class="row">
+                            <div class="col-md-6 mb-3">
+                                <label for="topic" class="form-label">Topic/Subject</label>
+                                <input type="text" class="form-control" id="topic" name="topic" placeholder="e.g., JavaScript, Biology, History" required>
+                            </div>
+                            <div class="col-md-6 mb-3">
+                                <label for="difficulty" class="form-label">Difficulty Level</label>
+                                <select class="form-select" id="difficulty" name="difficulty" required>
+                                    <option value="">Select Difficulty</option>
+                                    <option value="beginner">Beginner</option>
+                                    <option value="intermediate">Intermediate</option>
+                                    <option value="advanced">Advanced</option>
+                                </select>
+                            </div>
+                        </div>
+                        
+                        <div class="row">
+                            <div class="col-md-6 mb-3">
+                                <label for="questionCount" class="form-label">Number of Questions</label>
+                                <select class="form-select" id="questionCount" name="questionCount" required>
+                                    <option value="">Select Count</option>
+                                    <option value="5">5 Questions</option>
+                                    <option value="10">10 Questions</option>
+                                    <option value="15">15 Questions</option>
+                                    <option value="20">20 Questions</option>
+                                </select>
+                            </div>
+                            <div class="col-md-6 mb-3">
+                                <label for="quizType" class="form-label">Quiz Type</label>
+                                <select class="form-select" id="quizType" name="quizType" required>
+                                    <option value="">Select Type</option>
+                                    <option value="multiple-choice">Multiple Choice</option>
+                                    <option value="true-false">True/False</option>
+                                    <option value="short-answer">Short Answer</option>
+                                </select>
+                            </div>
+                        </div>
+                        
+                        <div class="d-grid gap-2">
+                            <button type="submit" class="btn btn-primary btn-lg">
+                                <i class="fas fa-magic me-2"></i>Generate Quiz
+                            </button>
+                        </div>
+                    </form>
+                </div>
+            </div>
+        </div>
+        
+        <div class="col-lg-4">
+            <div class="card border-0 shadow-sm">
+                <div class="card-body">
+                    <h5><i class="fas fa-info-circle me-2"></i>How It Works</h5>
+                    <ul class="list-unstyled">
+                        <li class="mb-2"><i class="fas fa-check text-success me-2"></i>Choose your topic and difficulty</li>
+                        <li class="mb-2"><i class="fas fa-check text-success me-2"></i>Select question count and type</li>
+                        <li class="mb-2"><i class="fas fa-check text-success me-2"></i>AI generates personalized quiz</li>
+                        <li class="mb-2"><i class="fas fa-check text-success me-2"></i>Take the quiz and get instant feedback</li>
+                    </ul>
+                </div>
+            </div>
+            
+            <div class="card border-0 shadow-sm mt-3">
+                <div class="card-body">
+                    <h5><i class="fas fa-lightbulb me-2"></i>Tips</h5>
+                    <ul class="small">
+                        <li>Be specific with your topic for better questions</li>
+                        <li>Start with beginner if you're new to the subject</li>
+                        <li>Multiple choice is great for concept testing</li>
+                        <li>True/False is perfect for fact checking</li>
+                    </ul>
+                </div>
+            </div>
+        </div>
+    </div>
+    
+    <!-- Loading State -->
+    <div id="quiz-loading" class="text-center py-5 d-none">
+        <div class="spinner-border text-primary mb-3" style="width: 3rem; height: 3rem;" role="status">
+            <span class="visually-hidden">Loading...</span>
+        </div>
+        <h4>Generating Your Quiz...</h4>
+        <p class="text-muted">Our AI is creating personalized questions for you</p>
+    </div>
+    
+    <!-- Quiz Container -->
+    <div id="quiz-container" class="d-none">
+        <div class="row">
+            <div class="col-lg-8">
+                <div class="card shadow-sm border-0">
+                    <div class="card-header bg-success text-white d-flex justify-content-between align-items-center">
+                        <h4 class="mb-0" id="quiz-title">Quiz</h4>
+                        <div>
+                            <span class="badge bg-light text-dark" id="quiz-progress">Question 1 of 10</span>
+                        </div>
+                    </div>
+                    <div class="card-body">
+                        <div id="quiz-questions"></div>
+                        
+                        <div class="d-flex justify-content-between mt-4">
+                            <button type="button" class="btn btn-outline-secondary" id="prev-btn" disabled>
+                                <i class="fas fa-chevron-left me-2"></i>Previous
+                            </button>
+                            <button type="button" class="btn btn-primary" id="next-btn">
+                                Next<i class="fas fa-chevron-right ms-2"></i>
+                            </button>
+                            <button type="button" class="btn btn-success d-none" id="submit-btn">
+                                <i class="fas fa-check me-2"></i>Submit Quiz
+                            </button>
+                        </div>
+                    </div>
+                </div>
+            </div>
+            
+            <div class="col-lg-4">
+                <div class="card border-0 shadow-sm">
+                    <div class="card-body">
+                        <h5><i class="fas fa-list me-2"></i>Quiz Overview</h5>
+                        <div id="quiz-overview"></div>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
+    
+    <!-- Results Container -->
+    <div id="results-container" class="d-none">
+        <div class="row">
+            <div class="col-lg-8">
+                <div class="card shadow-sm border-0">
+                    <div class="card-header bg-info text-white">
+                        <h4 class="mb-0"><i class="fas fa-chart-line me-2"></i>Quiz Results</h4>
+                    </div>
+                    <div class="card-body">
+                        <div id="results-summary" class="text-center mb-4"></div>
+                        <div id="results-details"></div>
+                        
+                        <div class="text-center mt-4">
+                            <button type="button" class="btn btn-primary me-2" id="new-quiz-btn">
+                                <i class="fas fa-plus me-2"></i>Generate New Quiz
+                            </button>
+                            <a href="/quiz-history" class="btn btn-outline-info me-2">
+                                <i class="fas fa-history me-2"></i>View History
+                            </a>
+                            <button type="button" class="btn btn-outline-secondary" id="review-btn">
+                                <i class="fas fa-eye me-2"></i>Review Answers
+                            </button>
+                        </div>
+                    </div>
+                </div>
+            </div>
+            
+            <div class="col-lg-4">
+                <div class="card border-0 shadow-sm">
+                    <div class="card-body">
+                        <h5><i class="fas fa-trophy me-2"></i>Performance</h5>
+                        <div id="performance-chart"></div>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
+</div>
+
+<script>
+let currentQuiz = null;
+let currentQuestion = 0;
+let userAnswers = [];
+
+// Helper function to escape HTML
+function escapeHtml(text) {
+    const div = document.createElement('div');
+    div.textContent = text;
+    return div.innerHTML;
+}
+
+document.addEventListener('DOMContentLoaded', function() {
+    const quizForm = document.getElementById('quizForm');
+    const quizGenerator = document.getElementById('quiz-generator');
+    const quizLoading = document.getElementById('quiz-loading');
+    const quizContainer = document.getElementById('quiz-container');
+    const resultsContainer = document.getElementById('results-container');
+    
+    console.log('Quiz page loaded');
+    
+    if (!quizForm) {
+        console.error('Quiz form not found!');
+        alert('Error: Quiz form not found. Please refresh the page.');
+        return;
+    }
+    
+    // Add event listener for form submission
+    quizForm.addEventListener('submit', async function(e) {
+        e.preventDefault();
+        
+        console.log('Form submitted');
+        
+        try {
+            await generateQuiz();
+        } catch (error) {
+            console.error('Error generating quiz:', error);
+            alert('Error generating quiz: ' + error.message);
+            if (quizGenerator) quizGenerator.classList.remove('d-none');
+            if (quizLoading) quizLoading.classList.add('d-none');
+        }
+    });
+    
+    async function generateQuiz() {
+        console.log('Generating quiz...');
+        
+        const formData = new FormData(quizForm);
+        const quizData = {
+            topic: formData.get('topic'),
+            difficulty: formData.get('difficulty'),
+            questionCount: parseInt(formData.get('questionCount')),
+            quizType: formData.get('quizType')
+        };
+        
+        console.log('Quiz data:', quizData);
+        
+        // Validate form data
+        if (!quizData.topic || !quizData.difficulty || !quizData.questionCount || !quizData.quizType) {
+            console.error('Validation failed:', quizData);
+            alert('Please fill in all fields');
+            return;
+        }
+        
+        // Show loading
+        if (quizGenerator) quizGenerator.classList.add('d-none');
+        if (quizLoading) quizLoading.classList.remove('d-none');
+        
+        try {
+            console.log('Sending request to API...');
+            
+            const response = await fetch('/api/generate-quiz', {
+                method: 'POST',
+                headers: {
+                    'Content-Type': 'application/json',
+                },
+                body: JSON.stringify(quizData)
+            });
+            
+            console.log('Response status:', response.status);
+            
+            if (!response.ok) {
+                const errorText = await response.text();
+                console.error('API Error:', response.status, errorText);
+                throw new Error(`API Error: ${response.status} - ${errorText}`);
+            }
+            
+            const result = await response.json();
+            console.log('Quiz generated successfully');
+            
+            if (result.success) {
+                currentQuiz = result.quiz;
+                currentQuestion = 0;
+                userAnswers = new Array(currentQuiz.length).fill(null);
+                
+                displayQuiz(result);
+            } else {
+                console.error('Quiz generation failed:', result.error);
+                alert('Error generating quiz: ' + (result.error || 'Unknown error'));
+                if (quizGenerator) quizGenerator.classList.remove('d-none');
+            }
+        } catch (error) {
+            console.error('Quiz generation error:', error);
+            alert('Error: ' + error.message);
+            if (quizGenerator) quizGenerator.classList.remove('d-none');
+        } finally {
+            if (quizLoading) quizLoading.classList.add('d-none');
+        }
+    }
+    
+    function displayQuiz(quizData) {
+        console.log('Displaying quiz:', quizData);
+        
+        if (!quizContainer) {
+            console.error('Quiz container not found!');
+            return;
+        }
+        
+        quizContainer.classList.remove('d-none');
+        
+        const quizTitle = document.getElementById('quiz-title');
+        if (quizTitle) {
+            quizTitle.textContent = `${quizData.topic} Quiz`;
+        }
+        
+        displayQuestion(currentQuestion);
+        displayOverview();
+        
+        // Navigation buttons
+        const prevBtn = document.getElementById('prev-btn');
+        const nextBtn = document.getElementById('next-btn');
+        const submitBtn = document.getElementById('submit-btn');
+        const newQuizBtn = document.getElementById('new-quiz-btn');
+        
+        if (prevBtn) {
+            prevBtn.addEventListener('click', () => {
+                if (currentQuestion > 0) {
+                    currentQuestion--;
+                    displayQuestion(currentQuestion);
+                }
+            });
+        }
+        
+        if (nextBtn) {
+            nextBtn.addEventListener('click', () => {
+                if (currentQuestion < currentQuiz.length - 1) {
+                    currentQuestion++;
+                    displayQuestion(currentQuestion);
+                }
+            });
+        }
+        
+        if (submitBtn) {
+            submitBtn.addEventListener('click', submitQuiz);
+        }
+        
+        if (newQuizBtn) {
+            newQuizBtn.addEventListener('click', () => {
+                resetQuiz();
+            });
+        }
+    }
+    
+    function displayQuestion(index) {
+        if (!currentQuiz || index >= currentQuiz.length) {
+            console.error('Invalid question index or quiz not loaded');
+            return;
+        }
+        
+        const question = currentQuiz[index];
+        const questionsDiv = document.getElementById('quiz-questions');
+        
+        if (!questionsDiv) {
+            console.error('Questions div not found!');
+            return;
+        }
+        
+        let html = `
+            <div class="mb-4">
+                <h5 class="mb-3">Question ${index + 1}</h5>
+                <p class="lead">${escapeHtml(question.question)}</p>
+            </div>
+        `;
+        
+        if (question.options) {
+            // Multiple choice
+            html += '<div class="mb-3">';
+            question.options.forEach((option, i) => {
+                const isSelected = userAnswers[index] === option.charAt(0);
+                html += `
+                    <div class="form-check mb-2">
+                        <input class="form-check-input" type="radio" name="question_${index}" 
+                               id="q${index}_${i}" value="${escapeHtml(option.charAt(0))}" ${isSelected ? 'checked' : ''}>
+                        <label class="form-check-label" for="q${index}_${i}">
+                            ${escapeHtml(option)}
+                        </label>
+                    </div>
+                `;
+            });
+            html += '</div>';
+        } else if (question.correct === 'True' || question.correct === 'False') {
+            // True/False
+            html += `
+                <div class="mb-3">
+                    <div class="form-check mb-2">
+                        <input class="form-check-input" type="radio" name="question_${index}" 
+                               id="q${index}_true" value="True" ${userAnswers[index] === 'True' ? 'checked' : ''}>
+                        <label class="form-check-label" for="q${index}_true">True</label>
+                    </div>
+                    <div class="form-check mb-2">
+                        <input class="form-check-input" type="radio" name="question_${index}" 
+                               id="q${index}_false" value="False" ${userAnswers[index] === 'False' ? 'checked' : ''}>
+                        <label class="form-check-label" for="q${index}_false">False</label>
+                    </div>
+                </div>
+            `;
+        } else {
+            // Short answer
+            html += `
+                <div class="mb-3">
+                    <textarea class="form-control" name="question_${index}" 
+                              placeholder="Enter your answer here...">${userAnswers[index] || ''}</textarea>
+                </div>
+            `;
+        }
+        
+        questionsDiv.innerHTML = html;
+        
+        // Update progress
+        const progressEl = document.getElementById('quiz-progress');
+        if (progressEl) {
+            progressEl.textContent = `Question ${index + 1} of ${currentQuiz.length}`;
+        }
+        
+        // Update navigation buttons
+        const prevBtn = document.getElementById('prev-btn');
+        const nextBtn = document.getElementById('next-btn');
+        const submitBtn = document.getElementById('submit-btn');
+        
+        // Check if all questions are answered
+        const allAnswered = userAnswers.every(answer => answer !== null && answer !== '');
+        
+        if (prevBtn) prevBtn.disabled = index === 0;
+        
+        // Show next button if not on last question
+        if (nextBtn) {
+            if (index === currentQuiz.length - 1) {
+                nextBtn.classList.add('d-none');
+            } else {
+                nextBtn.classList.remove('d-none');
+            }
+        }
+        
+        // Show submit button if all questions answered or on last question
+        if (submitBtn) {
+            if (allAnswered) {
+                submitBtn.classList.remove('d-none');
+                submitBtn.innerHTML = '<i class="fas fa-trophy me-2"></i>Complete Quiz';
+                submitBtn.classList.remove('btn-success');
+                submitBtn.classList.add('btn-primary');
+            } else if (index === currentQuiz.length - 1) {
+                submitBtn.classList.remove('d-none');
+                submitBtn.innerHTML = '<i class="fas fa-check me-2"></i>Submit Quiz';
+                submitBtn.classList.remove('btn-primary');
+                submitBtn.classList.add('btn-success');
+            } else {
+                submitBtn.classList.add('d-none');
+            }
+        }
+        
+        // Save answer when changed
+        const inputs = questionsDiv.querySelectorAll('input, textarea');
+        inputs.forEach(input => {
+            input.addEventListener('change', (e) => {
+                userAnswers[index] = e.target.value;
+                displayOverview();
+                updateNavigationButtons(); // Update buttons when answers change
+            });
+        });
+    }
+    
+    function updateNavigationButtons() {
+        const prevBtn = document.getElementById('prev-btn');
+        const nextBtn = document.getElementById('next-btn');
+        const submitBtn = document.getElementById('submit-btn');
+        
+        // Check if all questions are answered
+        const allAnswered = userAnswers.every(answer => answer !== null && answer !== '');
+        
+        if (prevBtn) prevBtn.disabled = currentQuestion === 0;
+        
+        // Show next button if not on last question
+        if (nextBtn) {
+            if (currentQuestion === currentQuiz.length - 1) {
+                nextBtn.classList.add('d-none');
+            } else {
+                nextBtn.classList.remove('d-none');
+            }
+        }
+        
+        // Show submit button if all questions answered or on last question
+        if (submitBtn) {
+            if (allAnswered) {
+                submitBtn.classList.remove('d-none');
+                submitBtn.innerHTML = '<i class="fas fa-trophy me-2"></i>Complete Quiz';
+                submitBtn.classList.remove('btn-success');
+                submitBtn.classList.add('btn-primary');
+            } else if (currentQuestion === currentQuiz.length - 1) {
+                submitBtn.classList.remove('d-none');
+                submitBtn.innerHTML = '<i class="fas fa-check me-2"></i>Submit Quiz';
+                submitBtn.classList.remove('btn-primary');
+                submitBtn.classList.add('btn-success');
+            } else {
+                submitBtn.classList.add('d-none');
+            }
+        }
+    }
+    
+    function displayOverview() {
+        const overviewDiv = document.getElementById('quiz-overview');
+        let html = '<div class="row">';
+        
+        currentQuiz.forEach((_, i) => {
+            const isAnswered = userAnswers[i] !== null && userAnswers[i] !== '';
+            const isCurrent = i === currentQuestion;
+            
+            html += `
+                <div class="col-4 mb-2">
+                    <button class="btn btn-sm w-100 ${isCurrent ? 'btn-primary' : isAnswered ? 'btn-success' : 'btn-outline-secondary'}" 
+                            onclick="goToQuestion(${i})">
+                        ${i + 1}
+                    </button>
+                </div>
+            `;
+        });
+        
+        html += '</div>';
+        overviewDiv.innerHTML = html;
+        
+        // Update navigation buttons when overview changes
+        updateNavigationButtons();
+    }
+    
+    window.goToQuestion = function(index) {
+        currentQuestion = index;
+        displayQuestion(currentQuestion);
+        updateNavigationButtons();
+    };
+    
+    async function submitQuiz() {
+        try {
+            const response = await fetch('/api/submit-quiz', {
+                method: 'POST',
+                headers: {
+                    'Content-Type': 'application/json',
+                },
+                body: JSON.stringify({
+                    answers: userAnswers,
+                    quiz: currentQuiz,
+                    topic: document.getElementById('topic').value,
+                    difficulty: document.getElementById('difficulty').value,
+                    quizType: document.getElementById('quizType').value
+                })
+            });
+            
+            const result = await response.json();
+            
+            if (result.success) {
+                displayResults(result);
+            } else {
+                alert('Error submitting quiz: ' + result.error);
+            }
+        } catch (error) {
+            alert('Error: ' + error.message);
+        }
+    }
+    
+    function displayResults(results) {
+        quizContainer.classList.add('d-none');
+        resultsContainer.classList.remove('d-none');
+        
+        const summaryDiv = document.getElementById('results-summary');
+        const percentage = results.percentage;
+        let grade = 'F';
+        let badgeClass = 'bg-danger';
+        
+        if (percentage >= 90) { grade = 'A'; badgeClass = 'bg-success'; }
+        else if (percentage >= 80) { grade = 'B'; badgeClass = 'bg-info'; }
+        else if (percentage >= 70) { grade = 'C'; badgeClass = 'bg-warning'; }
+        else if (percentage >= 60) { grade = 'D'; badgeClass = 'bg-warning'; }
+        
+        summaryDiv.innerHTML = `
+            <div class="row">
+                <div class="col-md-3">
+                    <div class="display-4 text-primary">${results.score}/${results.total}</div>
+                    <p class="text-muted">Score</p>
+                </div>
+                <div class="col-md-3">
+                    <div class="display-4 text-success">${percentage}%</div>
+                    <p class="text-muted">Percentage</p>
+                </div>
+                <div class="col-md-3">
+                    <div class="display-4">
+                        <span class="badge ${badgeClass} fs-1">${grade}</span>
+                    </div>
+                    <p class="text-muted">Grade</p>
+                </div>
+                <div class="col-md-3">
+                    <div class="display-4 text-info">${results.results.filter(r => r.isCorrect).length}</div>
+                    <p class="text-muted">Correct</p>
+                </div>
+            </div>
+        `;
+        
+        const detailsDiv = document.getElementById('results-details');
+        let detailsHtml = '<h5 class="mb-3">Detailed Results</h5>';
+        
+        results.results.forEach((result, i) => {
+            detailsHtml += `
+                <div class="card mb-3 ${result.isCorrect ? 'border-success' : 'border-danger'}">
+                    <div class="card-body">
+                        <h6 class="card-title d-flex justify-content-between align-items-center">
+                            Question ${i + 1}
+                            <span class="badge ${result.isCorrect ? 'bg-success' : 'bg-danger'}">
+                                ${result.isCorrect ? 'Correct' : 'Incorrect'}
+                            </span>
+                        </h6>
+                        <p class="card-text">${escapeHtml(result.question)}</p>
+                        <div class="row">
+                            <div class="col-md-6">
+                                <small class="text-muted">Your Answer:</small>
+                                <p class="mb-1 ${result.isCorrect ? 'text-success' : 'text-danger'}">${escapeHtml(result.userAnswer || 'Not answered')}</p>
+                            </div>
+                            <div class="col-md-6">
+                                <small class="text-muted">Correct Answer:</small>
+                                <p class="mb-1 text-success">${escapeHtml(result.correctAnswer)}</p>
+                            </div>
+                        </div>
+                        ${result.explanation ? `<div class="mt-2"><small class="text-muted">Explanation:</small><p class="small">${escapeHtml(result.explanation)}</p></div>` : ''}
+                    </div>
+                </div>
+            `;
+        });
+        
+        detailsDiv.innerHTML = detailsHtml;
+    }
+    
+    function resetQuiz() {
+        currentQuiz = null;
+        currentQuestion = 0;
+        userAnswers = [];
+        
+        quizContainer.classList.add('d-none');
+        resultsContainer.classList.add('d-none');
+        quizGenerator.classList.remove('d-none');
+        
+        quizForm.reset();
+    }
+});
+</script>
+
+<%- include('partials/footer') %>
diff --git a/views/register.ejs b/views/register.ejs
new file mode 100644
index 0000000..b56d7d3
--- /dev/null
+++ b/views/register.ejs
@@ -0,0 +1,194 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title><%= title %></title>
+    <link href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap/5.3.0/css/bootstrap.min.css" rel="stylesheet">
+    <link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css" rel="stylesheet">
+    <link href="/css/style.css" rel="stylesheet">
+</head>
+<body class="bg-light">
+    <nav class="navbar navbar-expand-lg navbar-dark bg-primary">
+        <div class="container">
+            <a class="navbar-brand d-flex align-items-center" href="/">
+                <img src="/images/logo.png" alt="EduCat Logo" height="40" class="me-2">
+                <span class="fw-bold">EduCat</span>
+            </a>
+        </div>
+    </nav>
+
+<div class="container-fluid vh-100 d-flex align-items-center justify-content-center bg-light">
+    <div class="row w-100">
+        <div class="col-md-6 col-lg-5 mx-auto">
+            <div class="card shadow-lg border-0">
+                <div class="card-body p-5">
+                    <div class="text-center mb-4">
+                        <img src="/images/logo.png" alt="EduCat Logo" height="80" class="mb-3">
+                        <h2 class="mb-2">Join EduCat!</h2>
+                        <p class="text-muted">Create your account to get started</p>
+                    </div>
+
+                    <!-- Display flash messages -->
+                    <% if (messages.error) { %>
+                        <div class="alert alert-danger alert-dismissible fade show" role="alert">
+                            <i class="fas fa-exclamation-triangle me-2"></i>
+                            <%= messages.error %>
+                            <button type="button" class="btn-close" data-bs-dismiss="alert"></button>
+                        </div>
+                    <% } %>
+                    
+                    <% if (messages.success) { %>
+                        <div class="alert alert-success alert-dismissible fade show" role="alert">
+                            <i class="fas fa-check-circle me-2"></i>
+                            <%= messages.success %>
+                            <button type="button" class="btn-close" data-bs-dismiss="alert"></button>
+                        </div>
+                    <% } %>
+
+                    <form action="/register" method="POST" id="registerForm">
+                        <div class="mb-3">
+                            <label for="name" class="form-label">Full Name</label>
+                            <div class="input-group">
+                                <span class="input-group-text">
+                                    <i class="fas fa-user"></i>
+                                </span>
+                                <input type="text" class="form-control" id="name" name="name" required>
+                            </div>
+                        </div>
+                        
+                        <div class="mb-3">
+                            <label for="username" class="form-label">Username</label>
+                            <div class="input-group">
+                                <span class="input-group-text">
+                                    <i class="fas fa-at"></i>
+                                </span>
+                                <input type="text" class="form-control" id="username" name="username" required>
+                            </div>
+                        </div>
+                        
+                        <div class="mb-3">
+                            <label for="email" class="form-label">Email Address</label>
+                            <div class="input-group">
+                                <span class="input-group-text">
+                                    <i class="fas fa-envelope"></i>
+                                </span>
+                                <input type="email" class="form-control" id="email" name="email" required>
+                            </div>
+                        </div>
+                        
+                        <div class="mb-3">
+                            <label for="password" class="form-label">Password</label>
+                            <div class="input-group">
+                                <span class="input-group-text">
+                                    <i class="fas fa-lock"></i>
+                                </span>
+                                <input type="password" class="form-control" id="password" name="password" required minlength="6">
+                                <button type="button" class="btn btn-outline-secondary" onclick="togglePassword('password')">
+                                    <i class="fas fa-eye" id="toggleIcon1"></i>
+                                </button>
+                            </div>
+                            <small class="text-muted">Password must be at least 6 characters long</small>
+                        </div>
+                        
+                        <div class="mb-3">
+                            <label for="confirmPassword" class="form-label">Confirm Password</label>
+                            <div class="input-group">
+                                <span class="input-group-text">
+                                    <i class="fas fa-lock"></i>
+                                </span>
+                                <input type="password" class="form-control" id="confirmPassword" name="confirmPassword" required minlength="6">
+                                <button type="button" class="btn btn-outline-secondary" onclick="togglePassword('confirmPassword')">
+                                    <i class="fas fa-eye" id="toggleIcon2"></i>
+                                </button>
+                            </div>
+                        </div>
+                        
+                        <div class="d-grid gap-2 mb-3">
+                            <button type="submit" class="btn btn-primary btn-lg">
+                                <i class="fas fa-user-plus me-2"></i>Create Account
+                            </button>
+                        </div>
+                    </form>
+                    
+                    <div class="text-center">
+                        <p class="text-muted">Already have an account? 
+                            <a href="/login" class="text-primary text-decoration-none">Sign in here</a>
+                        </p>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
+</div>
+
+<script>
+function togglePassword(fieldId) {
+    const passwordInput = document.getElementById(fieldId);
+    const toggleIcon = document.getElementById(fieldId === 'password' ? 'toggleIcon1' : 'toggleIcon2');
+    
+    if (passwordInput.type === 'password') {
+        passwordInput.type = 'text';
+        toggleIcon.classList.remove('fa-eye');
+        toggleIcon.classList.add('fa-eye-slash');
+    } else {
+        passwordInput.type = 'password';
+        toggleIcon.classList.remove('fa-eye-slash');
+        toggleIcon.classList.add('fa-eye');
+    }
+}
+
+// Form validation
+document.getElementById('registerForm').addEventListener('submit', function(e) {
+    const name = document.getElementById('name').value.trim();
+    const username = document.getElementById('username').value.trim();
+    const email = document.getElementById('email').value.trim();
+    const password = document.getElementById('password').value;
+    const confirmPassword = document.getElementById('confirmPassword').value;
+    
+    if (!name || !username || !email || !password || !confirmPassword) {
+        e.preventDefault();
+        alert('Please fill in all fields');
+        return;
+    }
+    
+    if (password !== confirmPassword) {
+        e.preventDefault();
+        alert('Passwords do not match');
+        return;
+    }
+    
+    if (password.length < 6) {
+        e.preventDefault();
+        alert('Password must be at least 6 characters long');
+        return;
+    }
+    
+    // Basic email validation
+    const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
+    if (!emailRegex.test(email)) {
+        e.preventDefault();
+        alert('Please enter a valid email address');
+        return;
+    }
+});
+
+// Real-time password confirmation
+document.getElementById('confirmPassword').addEventListener('input', function() {
+    const password = document.getElementById('password').value;
+    const confirmPassword = this.value;
+    
+    if (password !== confirmPassword) {
+        this.setCustomValidity('Passwords do not match');
+        this.classList.add('is-invalid');
+    } else {
+        this.setCustomValidity('');
+        this.classList.remove('is-invalid');
+        this.classList.add('is-valid');
+    }
+});
+</script>
+
+<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap/5.3.0/js/bootstrap.bundle.min.js"></script>
+</body>
+</html>
diff --git a/views/revise.ejs b/views/revise.ejs
new file mode 100644
index 0000000..b0d16d7
--- /dev/null
+++ b/views/revise.ejs
@@ -0,0 +1,149 @@
+<%- include('partials/header') %>
+
+<div class="container py-5">
+    <div class="row">
+        <div class="col-lg-8">
+            <div class="card shadow-lg border-0">
+                <div class="card-header bg-primary text-white">
+                    <h3 class="mb-0"><i class="fas fa-edit me-2"></i>Revise: <%= file.originalName %></h3>
+                </div>
+                <div class="card-body">
+                    <div class="row">
+                        <div class="col-md-6">
+                            <h5>Original Notes</h5>
+                            <div class="border p-3 bg-light rounded" style="height: 400px; overflow-y: auto;">
+                                <pre class="mb-0"><%= content %></pre>
+                            </div>
+                        </div>
+                        <div class="col-md-6">
+                            <h5>AI-Revised Notes</h5>
+                            <div id="revised-content" class="border p-3 bg-white rounded" style="height: 400px; overflow-y: auto;">
+                                <p class="text-muted text-center mt-5">Select a revision type and click "Revise" to see AI-enhanced notes here.</p>
+                            </div>
+                        </div>
+                    </div>
+                    
+                    <div class="mt-4">
+                        <div class="row">
+                            <div class="col-md-6">
+                                <label class="form-label">Revision Type</label>
+                                <select id="revision-type" class="form-select">
+                                    <option value="improve">Improve & Enhance</option>
+                                    <option value="summarize">Summarize</option>
+                                    <option value="questions">Generate Study Questions</option>
+                                </select>
+                            </div>
+                            <div class="col-md-6 d-flex align-items-end">
+                                <button type="button" id="revise-btn" class="btn btn-primary btn-lg w-100">
+                                    <i class="fas fa-brain me-2"></i>Revise with AI
+                                </button>
+                            </div>
+                        </div>
+                    </div>
+
+                    <div id="revision-progress" class="mt-4 d-none">
+                        <div class="progress">
+                            <div class="progress-bar progress-bar-striped progress-bar-animated" role="progressbar" style="width: 100%"></div>
+                        </div>
+                        <p class="text-center mt-2 mb-0">AI is processing your notes...</p>
+                    </div>
+                </div>
+            </div>
+        </div>
+        <div class="col-lg-4">
+            <div class="card border-0 shadow-sm">
+                <div class="card-body">
+                    <h5><i class="fas fa-info-circle me-2"></i>File Information</h5>
+                    <ul class="list-unstyled">
+                        <li><strong>Name:</strong> <%= file.originalName %></li>
+                        <li><strong>Size:</strong> <%= Math.round(file.size / 1024) %> KB</li>
+                        <li><strong>Uploaded:</strong> <%= new Date(file.uploadDate).toLocaleDateString() %></li>
+                    </ul>
+                </div>
+            </div>
+
+            <div class="card border-0 shadow-sm mt-3">
+                <div class="card-body">
+                    <h5><i class="fas fa-lightbulb me-2"></i>Revision Tips</h5>
+                    <ul class="small">
+                        <li><strong>Improve & Enhance:</strong> Makes your notes more comprehensive and well-structured</li>
+                        <li><strong>Summarize:</strong> Creates concise summaries of your key points</li>
+                        <li><strong>Generate Questions:</strong> Creates study questions to test your understanding</li>
+                    </ul>
+                </div>
+            </div>
+
+            <div class="card border-0 shadow-sm mt-3">
+                <div class="card-body text-center">
+                    <button type="button" id="save-btn" class="btn btn-success w-100 mb-2" disabled>
+                        <i class="fas fa-save me-2"></i>Save Revised Notes
+                    </button>
+                    <button type="button" id="download-btn" class="btn btn-outline-primary w-100" disabled>
+                        <i class="fas fa-download me-2"></i>Download
+                    </button>
+                </div>
+            </div>
+        </div>
+    </div>
+</div>
+
+<script>
+document.addEventListener('DOMContentLoaded', function() {
+    const reviseBtn = document.getElementById('revise-btn');
+    const revisionProgress = document.getElementById('revision-progress');
+    const revisedContent = document.getElementById('revised-content');
+    const revisionType = document.getElementById('revision-type');
+    const saveBtn = document.getElementById('save-btn');
+    const downloadBtn = document.getElementById('download-btn');
+    
+    reviseBtn.addEventListener('click', async function() {
+        const type = revisionType.value;
+        const content = `<%= content.replace(/"/g, '\\"').replace(/\n/g, '\\n') %>`;
+        
+        console.log('Revise button clicked with type:', type);
+        
+        reviseBtn.disabled = true;
+        revisionProgress.classList.remove('d-none');
+        revisedContent.innerHTML = '<p class="text-muted text-center mt-5">Processing...</p>';
+        
+        try {
+            console.log('Sending request to /api/revise');
+            const response = await fetch('/api/revise', {
+                method: 'POST',
+                headers: {
+                    'Content-Type': 'application/json',
+                },
+                body: JSON.stringify({
+                    content: content,
+                    revisionType: type
+                })
+            });
+            
+            console.log('Response status:', response.status);
+            
+            if (!response.ok) {
+                throw new Error(`HTTP error! status: ${response.status}`);
+            }
+            
+            const result = await response.json();
+            console.log('Revision result:', result);
+            
+            if (result.success) {
+                revisedContent.innerHTML = '<pre class="mb-0">' + result.revisedContent + '</pre>';
+                saveBtn.disabled = false;
+                downloadBtn.disabled = false;
+            } else {
+                revisedContent.innerHTML = '<div class="alert alert-danger">Error: ' + (result.error || 'Unknown error') + '</div>';
+            }
+        } catch (error) {
+            console.error('Revision error:', error);
+            revisedContent.innerHTML = '<div class="alert alert-danger">Error: ' + error.message + '</div>';
+        } finally {
+            reviseBtn.disabled = false;
+            revisionProgress.classList.add('d-none');
+        }
+    });
+});
+</script>
+
+<%- include('partials/footer') %>
diff --git a/views/upload.ejs b/views/upload.ejs
new file mode 100644
index 0000000..14047d5
--- /dev/null
+++ b/views/upload.ejs
@@ -0,0 +1,75 @@
+<%- include('partials/header') %>
+
+<div class="container py-5">
+    <div class="row justify-content-center">
+        <div class="col-lg-8">
+            <div class="card shadow-lg border-0">
+                <div class="card-header bg-primary text-white">
+                    <h3 class="mb-0"><i class="fas fa-upload me-2"></i>Upload Your Notes</h3>
+                </div>
+                <div class="card-body p-5">
+                    <p class="text-muted mb-4">Upload your study notes and let our AI help you create better, more comprehensive study materials.</p>
+                    
+                    <div id="upload-area" class="border-2 border-dashed border-primary rounded p-5 text-center mb-4 upload-dropzone">
+                        <i class="fas fa-cloud-upload-alt fa-3x text-primary mb-3"></i>
+                        <h5>Drag & Drop your files here</h5>
+                        <p class="text-muted">or click to browse</p>
+                        <input type="file" id="noteFile" name="noteFile" class="d-none" accept=".pdf,.doc,.docx,.txt,.jpg,.jpeg,.png,.gif">
+                        <button type="button" class="btn btn-primary" onclick="document.getElementById('noteFile').click()">
+                            <i class="fas fa-folder-open me-2"></i>Choose File
+                        </button>
+                    </div>
+
+                    <div id="file-info" class="d-none mb-4">
+                        <div class="alert alert-info">
+                            <i class="fas fa-file me-2"></i>
+                            <span id="file-name"></span>
+                            <span id="file-size" class="text-muted ms-2"></span>
+                        </div>
+                    </div>
+
+                    <div class="d-grid gap-2">
+                        <button type="button" id="upload-btn" class="btn btn-success btn-lg" disabled>
+                            <i class="fas fa-upload me-2"></i>Upload & Process
+                        </button>
+                    </div>
+
+                    <div id="upload-progress" class="mt-4 d-none">
+                        <div class="progress">
+                            <div class="progress-bar progress-bar-striped progress-bar-animated" role="progressbar" style="width: 0%"></div>
+                        </div>
+                        <p class="text-center mt-2 mb-0">Processing your notes...</p>
+                    </div>
+
+                    <div id="upload-result" class="mt-4"></div>
+                </div>
+            </div>
+
+            <div class="row mt-5">
+                <div class="col-md-4">
+                    <div class="text-center">
+                        <i class="fas fa-file-pdf fa-2x text-danger mb-2"></i>
+                        <h6>PDF Files</h6>
+                        <p class="text-muted small">Upload PDF documents</p>
+                    </div>
+                </div>
+                <div class="col-md-4">
+                    <div class="text-center">
+                        <i class="fas fa-file-word fa-2x text-primary mb-2"></i>
+                        <h6>Word Documents</h6>
+                        <p class="text-muted small">DOC & DOCX files</p>
+                    </div>
+                </div>
+                <div class="col-md-4">
+                    <div class="text-center">
+                        <i class="fas fa-file-alt fa-2x text-success mb-2"></i>
+                        <h6>Text Files</h6>
+                        <p class="text-muted small">Plain text documents</p>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
+</div>
+
+<%- include('partials/footer') %>