✓ 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 labeled LUFT at top, but DOM layout places the LUFT label above the slider whose CSS rotation makes the thumb travel downward for increasing values — effectively top-of-visual = low value = air is correct structurally, but the rotated range input with margin:140px means visually dragging up increases the value sending crowns INTO water, which is the wrong direction convention); otherwise physics values, ASCII art, displaced-water deltas, heureka animation, bubbles, and splash effects are all genuinely implemented with good fidelity.
8,280 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (min=0 labeled LUFT at top, but DOM layout places the LUFT label above the slider whose CSS rotation makes the thumb travel downward for increasing values — effectively top-of-visual = low value = air is correct structurally, but the rotated range input with margin:140px means visually dragging up increases the value sending crowns INTO water, which is the wrong direction convention); otherwise physics values, ASCII art, displaced-water deltas, heureka animation, bubbles, and splash effects are all genuinely implemented with good fidelity.