✓ 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 actually correct directionally, but the CSS rotation combined with the native range thumb makes the physical top of the slider visually correspond to value=100/water — effectively inverted UX); otherwise a highly complete, visually polished implementation with correct physics, live data panel, ripples, bubbles, splash particles, rising water level, displacement bars, and a proper Heureka overlay with sparkles.
10,325 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (min=0 at top maps to crowns in air, which is actually correct directionally, but the CSS rotation combined with the native range thumb makes the physical top of the slider visually correspond to value=100/water — effectively inverted UX); otherwise a highly complete, visually polished implementation with correct physics, live data panel, ripples, bubbles, splash particles, rising water level, displacement bars, and a proper Heureka overlay with sparkles.