✓ 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 air, but the CSS `writing-mode: bt-lr` + `transform: rotate(-90deg)` combined with no `direction` reversal means visually dragging up increases value pushing crowns into water, contradicting the label "LUFT ⬆ WASSER ⬇"); physics values are accurate (Au 19.3 g/cm³, gilded 13.0 g/cm³, volumes 51.8/76.9 cm³ at same 1000 g mass), and the ASCII rendering with wavy water, splash particles, rising water level, Archimedes figure, and HEUREKA animation is a strong, complete implementation.
6,803 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (min=0 at top maps to air, but the CSS `writing-mode: bt-lr` + `transform: rotate(-90deg)` combined with no `direction` reversal means visually dragging up increases value pushing crowns into water, contradicting the label "LUFT ⬆ WASSER ⬇"); physics values are accurate (Au 19.3 g/cm³, gilded 13.0 g/cm³, volumes 51.8/76.9 cm³ at same 1000 g mass), and the ASCII rendering with wavy water, splash particles, rising water level, Archimedes figure, and HEUREKA animation is a strong, complete implementation.