✓ 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/top=air is correct conceptually but the CSS rotate(-90deg) transform on a horizontal range input means dragging toward the top of the screen actually increases the value, making crowns sink — need to verify, but the logical mapping has value=0→air, value=100→water which is correct in code yet the rotated slider's physical top thumb position corresponds to value=100, so physically top=water, bottom=air, which is inverted UX.
12,925 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (min=0/top=air is correct conceptually but the CSS rotate(-90deg) transform on a horizontal range input means dragging toward the top of the screen actually increases the value, making crowns sink — need to verify, but the logical mapping has value=0→air, value=100→water which is correct in code yet the rotated slider's physical top thumb position corresponds to value=100, so physically top=water, bottom=air, which is inverted UX.