✓ 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 slider thumb sits at top meaning top=air is actually correct by CSS writing-mode tricks, yet the rtl direction inversion makes the physical drag feel counterintuitive and crown descent maps to increasing slider value which visually moves the thumb downward — borderline); ASCII art approach is creative and nearly complete, but crown art overflows tank walls and splash particle grid-coordinates are fragile, while physics values (gold 19.3, alloy 13.0, same 1000 g mass) are sound.
6,413 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (value=0 at top maps to crowns in air but slider thumb sits at top meaning top=air is actually correct by CSS writing-mode tricks, yet the rtl direction inversion makes the physical drag feel counterintuitive and crown descent maps to increasing slider value which visually moves the thumb downward — borderline); ASCII art approach is creative and nearly complete, but crown art overflows tank walls and splash particle grid-coordinates are fragile, while physics values (gold 19.3, alloy 13.0, same 1000 g mass) are sound.