✓ 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 at top maps to air, but the CSS rotate(-90deg) + no writing-mode inversion means dragging up submerges — UX is confusing and browser-inconsistent; everything else including physics values, dual-canvas design, live data panels, splash/ripple effects, and heureka overlay is solidly implemented.
8,002 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (min=0 at top maps to air, but the CSS rotate(-90deg) + no writing-mode inversion means dragging up submerges — UX is confusing and browser-inconsistent; everything else including physics values, dual-canvas design, live data panels, splash/ripple effects, and heureka overlay is solidly implemented.