✓ 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, value=1000 to submerged, but the HTML range input is rotated via CSS and the default thumb-at-bottom means bottom=air/top=water, the opposite of the spec); mass, volume, and density panels are static labels rather than live computed values.
8,454 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (value=0 maps to crowns in air, value=1000 to submerged, but the HTML range input is rotated via CSS and the default thumb-at-bottom means bottom=air/top=water, the opposite of the spec); mass, volume, and density panels are static labels rather than live computed values.