✓ Two crowns ✓ Same mass, different density ✓ Vertical slider ✓ Slider works ✓ Slider controls crowns — Slider direction correct ✓ Full slider range ✓ Fall animation ✓ Water displacement ✓ Rising water level ✓ Splash effects ✓ Physics correct ✓ Live mass value ✓ Live volume value ✓ Live density value ✓ Live displaced water ✓ Gilded displaces more ✓ Heureka animation ✓ No external deps ✓ Light bg / dark text ✓ Self-contained HTML
Slider direction is inverted (min=0 at top maps to "crowns in air" which is correct conceptually, but the -webkit-appearance:slider-vertical reversal means dragging up increases value and submerges crowns — top of physical thumb = water, bottom = air), and the continuous requestAnimationFrame loop re-renders regardless of slider position making splash detection noisy, but physics values, dual-crown data panel, water-rise scaling, and Heureka overlay are all solidly implemented.
8,721 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (min=0 at top maps to "crowns in air" which is correct conceptually, but the -webkit-appearance:slider-vertical reversal means dragging up increases value and submerges crowns — top of physical thumb = water, bottom = air), and the continuous requestAnimationFrame loop re-renders regardless of slider position making splash detection noisy, but physics values, dual-crown data panel, water-rise scaling, and Heureka overlay are all solidly implemented.