✓ 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 is out of water at visual top, but HTML range inputs with rotate:-90deg map low values to top, meaning slider up = submerged), mass/volume/density values are static not live-updating, and crown motion lacks a true fall animation — it just linearly tracks the slider with no autonomous drop.
6,314 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (min=0 is out of water at visual top, but HTML range inputs with rotate:-90deg map low values to top, meaning slider up = submerged), mass/volume/density values are static not live-updating, and crown motion lacks a true fall animation — it just linearly tracks the slider with no autonomous drop.