Gravity Flip

- Increased initial gameSpeed from 1.5 to 3.0 - Reduced player radius from 12 to 10 (tighter hitbox) - Reduced level interval from 20s to 10s (faster difficulty ramp) - Increased speed progression multiplier from 0.1 to 0.2 and max speed from 2.5 to 4.0 - Tightened first gap height from 1/2.5 to 1/3.5 of canvas - Reduced spacing between walls from 500px to 300px - Reduced gap height range from 90-250px to 90-240px (tighter average) - Reduced zero-gravity interval from 25s to 15s - Reduced zero-gravity intervals from 30-45s to 20-30s - Increased gravity from 0.2 to 0.35 - Increased terminal velocity from 3 to 4 - Reduced zero-gravity duration from 3000-5000ms to 3000-5000ms (unchanged but earlier activation) - Score update frequency doubled (every 200ms instead of 100ms) - Score gain per update reduced from 5 to 2 (net slower score growth) - Collision detection margins reduced from 5px to 2px - Removed 5px buffer in gap collision checks - Reduced margin checks from 10px to 3px for boundaries and 5px to 2px for walls - Increased particle count on flip from 8 to 12 - Increased trail frequency from 70ms to 50ms interval - Reduced trail length from 8 to 10 - Made trail fade faster (0.07 vs 0.05)