✓ 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 in practice (HTML vertical range with min=0/max=100 and writing-mode:bt-lr renders 0 at bottom/water in most browsers, opposite of labeled intent), and the single splash trigger fires only when crossing the 45% threshold rather than at true water entry per crown.
8,373 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted in practice (HTML vertical range with min=0/max=100 and writing-mode:bt-lr renders 0 at bottom/water in most browsers, opposite of labeled intent), and the single splash trigger fires only when crossing the 45% threshold rather than at true water entry per crown.