Gradient blinds: angled slats tilt open around the cursor to reveal a brighter rosewood-to-indigo field behind, each open slat catching a 1px lit edge, with a slow diagonal shimmer when idle. Original OGL fragment shader, offscreen-paused and reduced-motion-safe. Idles on its own when untouched — a ghost cursor tilts the blinds.
pnpm dlx shadcn@latest add "https://crucibleui.com/r/louver.json"