Cambio is a React component library that simplifies shared-element animations for dialogs/popups. It provides a compound component API (`Cambio.Root`, `Trigger`, `Portal`, `Backdrop`, `Popup`, `Title`, `Description`, `Close`) built on top of Base UI's accessible Dialog primitives and Motion's animation engine. The library offers four built-in motion presets (snappy, smooth, bouncy, reduced) configurable globally, per-component via variants, or overridden individually. It supports dismissible popups driven by drag gestures with configurable threshold and velocity, automatic respect for `prefers-reduced-motion`, and explicit reduce-motion overrides. The architecture uses React Context for state propagation and Motion's `motion.create` to wrap Base UI components. The code is well-typed in TypeScript, organized into clear modules, and demonstrates craftsmanship in its motion configuration resolution chain and drag physics handling. The repository also includes a documentation website built with Next.js and Fumadocs.