diff --git a/README.md b/README.md
index 530f2b3..6cf58f2 100644
--- a/README.md
+++ b/README.md
@@ -1,18 +1,20 @@
 # 📚 Bookmann
 
-A self-hosted ebook management system built with Go, PostgreSQL, and Svelte (integrated into a single service) featuring a beautiful Tokyo Night dark theme.
+A self-hosted ebook management system built with Go, PostgreSQL, HTMX, and Tailwind CSS (fully integrated into a single service) featuring multiple beautiful dark themes with Tokyo Night as default.
 
 ## ✨ Features
 
 - **🔒 Multi-User Authentication**: Complete user system with registration/login, JWT-based sessions, and bcrypt password hashing
 - **✅ Server-Side Validation**: Comprehensive input validation with detailed error messages
-- **🔔 Toast Notifications**: Real-time error feedback with beautiful toast popups
-- **🌙 Tokyo Night Theme**: Stunning dark theme with smooth animations and modern UI
+- **🌙 Multiple Themes**: 7 popular dark themes (Tokyo Night, Dracula, Nord, Solarized Dark, Monokai, One Dark Pro, Material Dark) with user preferences saved to database
+- **🎨 Theme Persistence**: User theme choices sync between browser and server
 - **📖 Reading Progress**: User-specific reading progress tracking
 - **🔧 RESTful API**: Clean API endpoints with JWT authentication
 - **🐳 Docker Ready**: Single-container deployment with PostgreSQL
 - **🧪 API Testing**: Complete Bruno collection for testing all endpoints
-- **📱 Responsive Design**: Mobile-first responsive interface
+- **📱 Responsive Design**: Mobile-first responsive interface using Tailwind CSS
+- **⚡ HTMX Integration**: Dynamic interactions without JavaScript frameworks
+- **🎯 TypeScript Support**: Client-side scripting with TypeScript compilation
 
 ## Quick Start
 
@@ -49,26 +51,18 @@ go run github.com/sqlc-dev/sqlc/cmd/sqlc@latest generate
 go run cmd/server/main.go
 ```
 
-### Frontend
-
-For development, run the frontend separately:
-
-```bash
-cd frontend
-npm install
-npm run dev
-```
+The application uses Go HTML templates for server-side rendering with HTMX for dynamic interactions. Templates are located in `backend/templates/`.
 
 **✨ Enhanced Features:**
-- **Authentication**: Login/Register forms with Tokyo Night styling at `/login` and `/register`
+- **Authentication**: Login/Register forms with multiple theme support at `/login` and `/register`
 - **JWT Management**: Secure token storage with localStorage and session persistence
-- **Protected Routes**: Automatic redirects with reactive auth state management
-- **Toast Notifications**: Real-time error feedback for all API operations
-- **Input Validation**: Client-side and server-side validation with detailed error messages
-- **Tokyo Night Theme**: Beautiful dark theme with smooth animations and modern UI components
+- **Theme Switching**: 7 popular dark themes with dropdown selector and database persistence
+- **HTMX Integration**: Form submissions and dynamic updates without page reloads
+- **Input Validation**: Server-side validation with detailed error messages
+- **Multiple Themes**: Beautiful dark themes with smooth transitions
 - **Responsive Design**: Mobile-first approach with optimized layouts for all screen sizes
 
-**Note**: For production, the frontend is built to static files and served by the Go backend.
+**Note**: The frontend is fully integrated into the Go backend using HTML templates and HTMX.
 
 ## API Endpoints
 
@@ -76,6 +70,7 @@ npm run dev
 - `POST /api/auth/register` - Register new user
 - `POST /api/auth/login` - Login user (email or username)
 - `GET /api/auth/profile` - Get user profile (requires JWT)
+- `PUT /api/auth/theme` - Update user theme preference (requires JWT)
 
 ### Ebooks (Protected)
 - `GET /api/ebooks` - List ebooks
@@ -108,19 +103,8 @@ Use the included Bruno collection in the `bruno/` directory for testing the API:
 │   │   ├── database/        # Database connection and queries
 │   │   └── handlers/        # HTTP handlers (auth + ebooks)
 │   ├── migrations/          # Database migrations
+│   ├── templates/           # Go HTML templates with HTMX
 │   └── sqlc.yaml            # sqlc configuration
-├── frontend/
-│   ├── src/
-│   │   ├── lib/
-│   │   │   ├── api.ts              # API client with auth & toast notifications
-│   │   │   ├── auth.ts             # Auth state management
-│   │   │   └── toast.ts            # Toast notification utilities
-│   │   └── routes/
-│   │       ├── login/              # Login page (Tokyo Night theme)
-│   │       ├── register/           # Registration page (Tokyo Night theme)
-│   │       └── ...                 # Other routes (Tokyo Night theme)
-│   ├── app.css                     # Global styles with Tokyo Night theme
-│   └── package.json                # Build dependencies with toast library
 ├── bruno/                   # Bruno API testing collection
 ├── docker-compose.yml
 └── README.md
@@ -129,21 +113,23 @@ Use the included Bruno collection in the `bruno/` directory for testing the API:
 ## 🎨 Recent Enhancements
 
 ### Backend Improvements
-- **Server-Side Validation**: Added comprehensive input validation using `go-playground/validator/v10`
-- **Enhanced Security**: All API endpoints now validate requests before processing
-- **Better Error Handling**: Detailed validation error messages for improved debugging
+- **Server-Side Rendering**: Replaced static frontend with Go HTML templates
+- **Theme System**: Database-backed user theme preferences with 7 popular dark themes
+- **HTMX Integration**: Dynamic interactions using HTMX for modern UX
+- **Enhanced Security**: JWT authentication with theme persistence
 
 ### Frontend Redesign
-- **Tokyo Night Theme**: Complete UI overhaul with beautiful dark theme colors
-- **Toast Notifications**: Real-time error feedback using `@zerodevx/svelte-toast`
-- **Modern UI Components**: Card-based layouts, smooth animations, and responsive design
-- **Enhanced UX**: Loading states, form validation, and improved user feedback
+- **Multiple Themes**: 7 beautiful dark themes (Tokyo Night default) with CSS variables
+- **HTMX Forms**: Real-time form submissions and updates without JavaScript frameworks
+- **Theme Switcher**: Dropdown selector that saves preferences to database
+- **Responsive Design**: Tailwind CSS for mobile-first responsive layouts
 
 ### Technical Updates
-- **Dependencies**: Added validation and toast libraries
-- **Typography**: Inter font family for improved readability
-- **Animations**: Custom fade-in and slide-in animations
-- **Performance**: Optimized CSS compilation and build process
+- **Go Templates**: Server-side rendering with template inheritance
+- **Tailwind CSS**: Utility-first CSS framework via CDN
+- **TypeScript Support**: Client-side scripting with TypeScript compilation
+- **Database Schema**: Added theme column to users table
+- **API Expansion**: New theme update endpoint
 
 ## License