✓ 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 (min=0/top=air is correct in label but the rotated range input maps dragging up to higher values = more submerged, which is physically backwards UX); mass, volume, and density live values are static text in HTML rather than dynamically updated display elements.
8,354 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (min=0/top=air is correct in label but the rotated range input maps dragging up to higher values = more submerged, which is physically backwards UX); mass, volume, and density live values are static text in HTML rather than dynamically updated display elements.