✓ 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 is CSS-rotated horizontal input (not a native vertical), and its direction is inverted — dragging toward visual "top" increases value and submerges crowns, which is backwards from the spec (top=air, bottom=water).
12,279 output tokens · claude-opus-4-6 · end_turn
Slider is CSS-rotated horizontal input (not a native vertical), and its direction is inverted — dragging toward visual "top" increases value and submerges crowns, which is backwards from the spec (top=air, bottom=water).