✓ 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 (value=0 maps to crowns in air at top of DOM range, but HTML range inputs render min at top when rotated -90°, making slider-up = water), and both crowns share identical submersion fraction so the visual differentiation of displacement relies solely on volume math rather than independent crown behavior.
11,921 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (value=0 maps to crowns in air at top of DOM range, but HTML range inputs render min at top when rotated -90°, making slider-up = water), and both crowns share identical submersion fraction so the visual differentiation of displacement relies solely on volume math rather than independent crown behavior.