✓ 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=Luft/bottom=Wasser but slider value=0 at top maps crowns to near-top, i.e., in air, which is actually correct by label but the crown Y calculation `crownYGold = CONTAINER_HEIGHT - 2 - (CONTAINER_HEIGHT - 4) * submergedRatio` moves them downward as value increases — direction is technically label-consistent but the "fall animation" is absent; rendering is ASCII-art only with no genuine smooth fall animation, and the splash fires only in the narrow depth 1–5 range making it largely invisible.
Slider direction is inverted (label says top=Luft/bottom=Wasser but slider value=0 at top maps crowns to near-top, i.e., in air, which is actually correct by label but the crown Y calculation `crownYGold = CONTAINER_HEIGHT - 2 - (CONTAINER_HEIGHT - 4) * submergedRatio` moves them downward as value increases — direction is technically label-consistent but the "fall animation" is absent; rendering is ASCII-art only with no genuine smooth fall animation, and the splash fires only in the narrow depth 1–5 range making it largely invisible.