✓ 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/top=air is correct orientation but the CSS rotate(-90deg) transform flips it so dragging up submerges the crown rather than moving it to air); mass/volume/density values are static HTML text rather than live-updating data-value elements, so live_value_mass/volume/density are not genuinely dynamic.
10,044 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (value=0/top=air is correct orientation but the CSS rotate(-90deg) transform flips it so dragging up submerges the crown rather than moving it to air); mass/volume/density values are static HTML text rather than live-updating data-value elements, so live_value_mass/volume/density are not genuinely dynamic.