✓ 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 (CSS transform:rotate(180deg) + bt-lr writing-mode means dragging up submerges crowns, contradicting the "Luft↕Wasser" label and prompt spec); all other features are solidly implemented with correct Archimedes physics, a typewriter Heureka overlay, ASCII water-rise differential, and live data panel.
8,974 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (CSS transform:rotate(180deg) + bt-lr writing-mode means dragging up submerges crowns, contradicting the "Luft↕Wasser" label and prompt spec); all other features are solidly implemented with correct Archimedes physics, a typewriter Heureka overlay, ASCII water-rise differential, and live data panel.