✓ 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 at top maps to crown in air, but HTML range inputs with slider-vertical render min at bottom, so top of slider = max = 100% submerged), heureka animation is broken (opacity toggling bypasses the CSS keyframe reset), and there are no fall or splash animations — just an instant ASCII repositioning.
Slider direction is inverted (value=0 at top maps to crown in air, but HTML range inputs with slider-vertical render min at bottom, so top of slider = max = 100% submerged), heureka animation is broken (opacity toggling bypasses the CSS keyframe reset), and there are no fall or splash animations — just an instant ASCII repositioning.