✓ 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 (value=0 at top = air is correct visually, but the CSS uses `transform: rotate(-90deg)` on a horizontal range, making the physical drag direction counterintuitive — dragging down increases value but the thumb moves up visually); ASCII-art approach is creative and physics values are accurate, but splash generation is decoupled from the animation loop (only triggers on fast slider moves) and the water-rise formula uses an ad-hoc scaling constant rather than true container geometry.
6,608 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (value=0 at top = air is correct visually, but the CSS uses `transform: rotate(-90deg)` on a horizontal range, making the physical drag direction counterintuitive — dragging down increases value but the thumb moves up visually); ASCII-art approach is creative and physics values are accurate, but splash generation is decoupled from the animation loop (only triggers on fast slider moves) and the water-rise formula uses an ad-hoc scaling constant rather than true container geometry.