- Add CSS classes (.muted/.unmuted) for mute button state management
- Fix button logic to show action that will be taken (standard UI pattern):
- When audio playing (unmuted): shows mute icon (click to mute)
- When audio muted: shows unmute icon (click to unmute)
- Add proper hover states for both mute and unmute icons
- Initialize button state correctly on video load
- Smooth 0.15s transitions between all states
- Follows standard media player UI conventions
- Fix panel positioning calculation to account for panel height
- Position panel bottom edge 10% from canvas bottom (not container)
- Ensure panel stays within canvas bounds when WebGL canvas is active
- Update positioning on window resize for responsive behavior
- Resolves issue where panel appeared partially below canvas
- Add complete 2D control panel with HTML structure and CSS styling
- Implement JavaScript functionality for all control buttons:
- Fullscreen toggle for immersive 16:9 video experience
- Play/pause with dynamic icon switching
- Back/forward 15-second skip controls
- Mute/unmute toggle
- Click-to-seek progress bar with real-time updates
- Add auto-hide behavior (5-second timeout) with mouse/touch activation
- Integrate with existing 2D mode - shows only when VR not supported
- Include all button PNG assets (normal and hover states)
- Responsive design for mobile devices
- Professional styling matching design specifications
- Replace embedded SVG code with external play.svg file
- Update HTML to use <img src='play.svg'> for cleaner code
- Update CSS selector from 'svg' to 'img' element
- Maintain all existing functionality and styling
- Improve code maintainability and separation of concerns
- Enable better caching and easier SVG updates
