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Adds functional UI micro-interactions with Framer Motion (motion/react) and modern CSS: hover and press feedback, toggles, toasts, drawers, modals, list reorder and shared-element transitions, with 100-250ms timings, asymmetric enter and exit easing, and reduced-motion support.

Applies tiered prefers-reduced-motion handling instead of disabling everything: removes vestibular triggers like parallax and scroll hijacking, softens large movement into short fades, and keeps essential motion. Covers CSS and JS gating for GSAP, Framer Motion and Lenis, per WCAG 2.3.3.