✓ 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 is rotated via CSS transform (not a true vertical input) and its direction is inverted — dragging down increases the value which moves crowns into water, but visually the thumb travels upward due to the rotation, making the air-top/water-bottom mapping counterintuitive; all physics, live values, and heureka animation are well-implemented.
11,088 output tokens · claude-opus-4-6 · end_turn
Slider is rotated via CSS transform (not a true vertical input) and its direction is inverted — dragging down increases the value which moves crowns into water, but visually the thumb travels upward due to the rotation, making the air-top/water-bottom mapping counterintuitive; all physics, live values, and heureka animation are well-implemented.