The checked state looks physically raised off the surface. A sphere-like radial gradient (silver → dark gray) combined with six layered box-shadows (rim highlight, outer glow, ground lift shadow, inner top shine, inner bottom depth) creates a convincing 3D embossed button. The box also lifts 1px on the Y axis. Flat and recessed when unchecked.
pnpm dlx shadcn@latest add "https://movin.design/r/checkbox-raised.json"The item is indexed, but its registry document could not be loaded.