✓ 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
Solid ASCII-art implementation with correct physics (gold 19.3 g/cm³, alloy 13.0 g/cm³, same 1000 g mass) and live data panel, but slider direction is inverted (value=0 is air / top yet slider thumb starts at top visually only due to CSS rotation hack, and min=0 maps to crowns in air which is correct physically but the label reads "LUFT ↑ WASSER ↓" suggesting bottom=water — the rotated range input with min=0/top actually means top=air correctly, however the CSS `transform: rotate(-90deg)` on a standard LTR slider makes low values appear at top, so direction is technically correct), and the Heureka fade-in relies on rAF delta accumulation rather than a proper timed trigger, making it sluggish.
6,364 output tokens · claude-opus-4-6 · end_turn
Solid ASCII-art implementation with correct physics (gold 19.3 g/cm³, alloy 13.0 g/cm³, same 1000 g mass) and live data panel, but slider direction is inverted (value=0 is air / top yet slider thumb starts at top visually only due to CSS rotation hack, and min=0 maps to crowns in air which is correct physically but the label reads "LUFT ↑ WASSER ↓" suggesting bottom=water — the rotated range input with min=0/top actually means top=air correctly, however the CSS `transform: rotate(-90deg)` on a standard LTR slider makes low values appear at top, so direction is technically correct), and the Heureka fade-in relies on rAF delta accumulation rather than a proper timed trigger, making it sluggish.