- Applied Tailwind CSS responsive classes across all components
- Implemented mobile-first design approach with breakpoints (sm, md, lg)
- Added touch-friendly interactions with min-h-[44px] touch targets
- Enhanced App.tsx with responsive padding, headings, and alerts
- Updated TextInputSection with responsive textarea and full-width mobile button
- Improved VoiceAssignmentSection with flexible layouts and mobile-optimized controls
- Enhanced AudioPlayerSection with responsive sizing and touch support
- Added custom CSS for range slider with larger thumb for mobile
- Improved select dropdowns with visible arrows and proper padding
- Added touch-manipulation class to prevent double-tap zoom
- Added active states for better mobile feedback
- Updated index.html with proper title and meta description
- Created RESPONSIVE_IMPROVEMENTS.md documentation
Requirements: 12.1, 12.2, 12.3, 12.4
- Created VoiceAssignmentSection component with role-to-voice mapping
- Added language selector with American English, British English, French, Japanese
- Added speed slider (0.5x - 1.5x range)
- Implemented Generate Audiobook button with proper disabled state
- Integrated component into App.tsx with state management
- Added role detection API call on text submission
- Validates all roles have assigned voices before enabling generation
Requirements: 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 4.1, 4.2, 4.3, 4.4, 5.1, 5.2, 5.3