✓ 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 (code explicitly does `fraction = 1.0 - rawFraction`, meaning slider-top maps to submerged and slider-bottom maps to air, opposite of spec); no fall animation — crowns teleport rather than animate independently.
6,355 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (code explicitly does `fraction = 1.0 - rawFraction`, meaning slider-top maps to submerged and slider-bottom maps to air, opposite of spec); no fall animation — crowns teleport rather than animate independently.