✓ 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 crowns in air, which is technically correct in CSS rotation, but the rotated horizontal input means dragging UP moves value DOWN, putting crowns in water — opposite of the stated requirement); otherwise a highly complete, visually polished implementation with correct physics, rich live data panel, splash/ripple/bubble effects, and a well-executed Heureka overlay.
12,091 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (min=0 at top maps to crowns in air, which is technically correct in CSS rotation, but the rotated horizontal input means dragging UP moves value DOWN, putting crowns in water — opposite of the stated requirement); otherwise a highly complete, visually polished implementation with correct physics, rich live data panel, splash/ripple/bubble effects, and a well-executed Heureka overlay.