✓ 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 is air, but the slider thumb starts at bottom visually due to CSS rotation — moving slider "up" increases value and lowers crown, which is backwards); mass, volume, and density live values are static HTML strings rather than dynamically updated elements, failing the live-readout requirement for three of four data fields.
8,885 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (min=0 is air, but the slider thumb starts at bottom visually due to CSS rotation — moving slider "up" increases value and lowers crown, which is backwards); mass, volume, and density live values are static HTML strings rather than dynamically updated elements, failing the live-readout requirement for three of four data fields.