✓ 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 due to CSS rotate(-90deg) transforming left→right into top→bottom with value 0 at left (visually top = air) — this works accidentally correctly in some browsers but the transform mapping is fragile and no genuine fall animation exists (crown teleports to positions).
11,869 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted due to CSS rotate(-90deg) transforming left→right into top→bottom with value 0 at left (visually top = air) — this works accidentally correctly in some browsers but the transform mapping is fragile and no genuine fall animation exists (crown teleports to positions).