✓ 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/top=air maps to value=0 but the CSS rotation trick makes the physical drag direction feel upside-down for a vertical range input rotated via transform), and the slider uses a CSS rotate hack rather than a native vertical range, causing orientation ambiguity; otherwise physics values are accurate, both crowns are well-distinguished, live data updates correctly, and the ASCII art approach with splash particles and Heureka trigger is creative and functional.
7,870 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (min=0/top=air maps to value=0 but the CSS rotation trick makes the physical drag direction feel upside-down for a vertical range input rotated via transform), and the slider uses a CSS rotate hack rather than a native vertical range, causing orientation ambiguity; otherwise physics values are accurate, both crowns are well-distinguished, live data updates correctly, and the ASCII art approach with splash particles and Heureka trigger is creative and functional.