✓ 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" correctly in logic but the CSS rotates a horizontal range input rather than using a true vertical slider, and the label order "Luft/Wasser" implies top=air/bottom=water yet the slider thumb starts at bottom when value=0 due to rotation transform — functionally ambiguous/broken UX); no genuine crown fall animation (crowns translate linearly with no gravity/easing); physics values (19.3 g/cm³ gold, 11.0 g/cm³ gilded, same 1000g mass) and displaced water calculations are accurate and well-displayed.
14,225 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (min=0 at top maps to "air" correctly in logic but the CSS rotates a horizontal range input rather than using a true vertical slider, and the label order "Luft/Wasser" implies top=air/bottom=water yet the slider thumb starts at bottom when value=0 due to rotation transform — functionally ambiguous/broken UX); no genuine crown fall animation (crowns translate linearly with no gravity/easing); physics values (19.3 g/cm³ gold, 11.0 g/cm³ gilded, same 1000g mass) and displaced water calculations are accurate and well-displayed.