✓ 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 (dragging down increases sliderValue=100=submerged, but thumb bottom position increases upward making UI feedback confusing), and the ASCII-art rendering is functional but visually limited compared to a canvas/SVG approach.
Slider direction is inverted (dragging down increases sliderValue=100=submerged, but thumb bottom position increases upward making UI feedback confusing), and the ASCII-art rendering is functional but visually limited compared to a canvas/SVG approach.