✓ 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 (value=0 at top maps to crowns in air, but `depthPercent` increases as value increases, meaning pushing slider down correctly submerges crowns — however the water level rise formula uses subtraction instead of addition, so waterLevel actually never rises above the base, making the rising water level feature non-functional.
Slider direction is inverted (value=0 at top maps to crowns in air, but `depthPercent` increases as value increases, meaning pushing slider down correctly submerges crowns — however the water level rise formula uses subtraction instead of addition, so waterLevel actually never rises above the base, making the rising water level feature non-functional.