✓ 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 per the instruction text ("move down to submerge") but the CSS applies rotate(180deg) with -webkit-appearance:slider-vertical, making the actual drag direction ambiguous and browser-dependent; all physics values (gold 19.32 g/cm³, gilded 11.50 g/cm³, same 1000 g mass, correct displaced volumes) are correct and clearly visualized with rising water, splash/bubble/ripple effects, delta indicators, and a full Heureka overlay.
12,139 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted per the instruction text ("move down to submerge") but the CSS applies rotate(180deg) with -webkit-appearance:slider-vertical, making the actual drag direction ambiguous and browser-dependent; all physics values (gold 19.32 g/cm³, gilded 11.50 g/cm³, same 1000 g mass, correct displaced volumes) are correct and clearly visualized with rising water, splash/bubble/ripple effects, delta indicators, and a full Heureka overlay.