✓ 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 (writing-mode bt-lr with direction:rtl means dragging down increases value, pushing crowns into water — bottom=water is correct in effect but the visual label orientation is confusing and the native HTML vertical range behaviour is non-standard/browser-inconsistent); no autonomous fall animation exists (crowns only move when slider is dragged, not an auto-play sequence).
11,633 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (writing-mode bt-lr with direction:rtl means dragging down increases value, pushing crowns into water — bottom=water is correct in effect but the visual label orientation is confusing and the native HTML vertical range behaviour is non-standard/browser-inconsistent); no autonomous fall animation exists (crowns only move when slider is dragged, not an auto-play sequence).