Unified practice module experience - All practice modules (Coordinate Quiz, Square Colors, Legal Moves, etc.) now feature a consistent UI with countdown timers, unified timer display, and improved fairness logic
Enhanced countdown and timer system - Added visual countdown before practice sessions start and a unified timer component across all modules for a more polished training experience
Mobile menu improvements - Fixed mobile navigation menu to properly overlay content, ensuring a smoother experience on mobile devices
Scroll behavior improvements - Unified scroll adjustment across practice modules for better usability
