✓ 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 (label says top=air/bottom=water but slider value 0 maps to crownAirY and 1000 maps to crownMaxDepthY, which with a rotated horizontal-to-vertical range input means dragging upward increases the value, effectively making top=water); mass, volume, and density live values are static HTML rather than dynamically updated; no fall animation (crowns teleport position with slider, no independent drop).
8,726 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (label says top=air/bottom=water but slider value 0 maps to crownAirY and 1000 maps to crownMaxDepthY, which with a rotated horizontal-to-vertical range input means dragging upward increases the value, effectively making top=water); mass, volume, and density live values are static HTML rather than dynamically updated; no fall animation (crowns teleport position with slider, no independent drop).