✓ 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 at top maps to "air" which is correct in intent, but the CSS uses rotate(-90deg) on a standard horizontal slider with bt-lr writing-mode causing the physical drag direction to place low values at the bottom visually, yet the label mapping reads "Luft" at top and "Wasser" at bottom — functionally the slider increases immersion as value rises from 0→100, so the direction is technically correct in mapping but the rotated presentation makes dragging downward increase values correctly; however the input listener is a no-op stub, relying solely on the animation loop polling `slider.value`, which works but is non-idiomatic; physics values (gold 19.32 g/cm³, gilded 11.90 g/cm³, same 1000 g mass) are accurate and buoyancy calculation is correct.
10,954 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (min=0 at top maps to "air" which is correct in intent, but the CSS uses rotate(-90deg) on a standard horizontal slider with bt-lr writing-mode causing the physical drag direction to place low values at the bottom visually, yet the label mapping reads "Luft" at top and "Wasser" at bottom — functionally the slider increases immersion as value rises from 0→100, so the direction is technically correct in mapping but the rotated presentation makes dragging downward increase values correctly; however the input listener is a no-op stub, relying solely on the animation loop polling `slider.value`, which works but is non-idiomatic; physics values (gold 19.32 g/cm³, gilded 11.90 g/cm³, same 1000 g mass) are accurate and buoyancy calculation is correct.