- Add form-group wrappers and error message elements to HTML
- Implement comprehensive client-side validation for nickname and message inputs
- Add visual feedback using existing CSS validation classes
- Include success confirmation states and proper error handling
- Enhance accessibility with focus management and screen reader support
- Moved inline JavaScript from index.php to app.js, video-player.js, chat.js, api.js, and ui-controls.js
- Ensured all functionality remains intact while enhancing code structure
- Updated UI_UPDATE.MD to reflect completion of JavaScript separation tasks
- Implement base styles for the application layout and components.
- Define color variables for consistent theming.
- Style the video player, chat section, and user interface elements.
- Add responsive design adjustments for mobile devices.
- Include animations for buttons and notifications for enhanced user experience.