# Frontend Documentation

## UI Framework and Library

**Framework**: React
**Styling**: Tailwind CSS
**Additional UI Libraries**: Headless UI (for accessible components)

## Design Philosophy

The application follows a minimalistic, modern design inspired by Apple's design language with:
- Clean, uncluttered interfaces
- Ample white space
- Subtle animations and transitions
- Focus on content and functionality
- Support for both light and dark mode

## Navigation Structure

The application uses a sidebar navigation layout with the following primary sections:

1. **Dashboard** - Overview of user activity and saved strategies
2. **Strategy Builder** - Main interface for creating strategies
3. **My Strategies** - Library of saved and generated strategies
4. **Community** - Social features and shared strategies
5. **Settings** - Account management and preferences

Mobile view will use a collapsible hamburger menu to ensure responsiveness.

## State Management

**Solution**: Zustand

Zustand is selected for state management due to its:
- Simplified API compared to Redux
- Strong performance for complex state
- Minimal boilerplate code
- Good compatibility with React's concurrent features
- Ability to handle complex nested state required for strategy configurations

## Component Structure

### Core Components

1. **StrategyBuilder**
   - Main component for strategy creation
   - Contains sub-sections for each framework part
   - Houses the visual indicator selection interface

2. **IndicatorSelector**
   - Allows selection from pre-built indicators
   - Provides customization controls for indicator parameters
   - Displays visual representation of indicator behavior

3. **StrategyViewer**
   - Displays the complete strategy with all selected components
   - Provides export options
   - Shows educational content about strategy components

4. **CodeExporter**
   - Generates PineScript code
   - Toggles between minimal and commented code
   - Provides copy functionality

5. **AIStrategyGenerator**
   - Interface for API key management
   - Controls for AI-based strategy generation
   - Displays generated strategies with explanations

6. **StrategyVersionControl**
   - Manages different versions of strategies
   - Provides comparison tools
   - Allows reverting to previous versions

### Shared Components

1. **Header**
   - App logo and navigation
   - User profile and account menu
   - Theme toggle (light/dark mode)

2. **Sidebar**
   - Main navigation menu
   - Collapsible on mobile devices

3. **Modal**
   - Reusable modal component for alerts, confirmations, etc.

4. **Toast**
   - Notification system for success/error messages

5. **Button**
   - Consistent button styles across the application
   - Various states (primary, secondary, disabled)

6. **Card**
   - Container for strategy items and content blocks

## Forms and Inputs

1. **API Key Management Form**
   - Secure input for LLM API keys
   - Validation for proper key format
   - Test connection functionality

2. **Strategy Parameters Form**
   - Number inputs with min/max validation
   - Toggle switches for boolean options
   - Dropdown selects for pre-defined options

3. **Filter and Search Forms**
   - Used in strategy library and community sections
   - Quick filtering by strategy type, performance, etc.

## Responsive Design

The application will follow a mobile-first approach with specific breakpoints for:
- Mobile (< 640px)
- Tablet (640px - 1024px)
- Desktop (> 1024px)

Tailwind's responsive classes will be utilized for consistent responsive behavior.

## Theme Management

The application will support both light and dark modes:
- System preference detection by default
- User toggle option
- Persistent preference storage
- Smooth transition between themes

## Performance Considerations

1. **Code Splitting**
   - Route-based code splitting
   - Dynamic imports for heavy components

2. **Lazy Loading**
   - Defer loading of non-critical components
   - Implement for community features and advanced settings

3. **Memoization**
   - Use React.memo for complex component renders
   - Implement useMemo for expensive calculations

4. **Asset Optimization**
   - Optimize images and icons
   - Use SVGs where possible for crisp rendering at all sizes