# Accessibility and motion

The custom element supplies motion, not business semantics. Put button, link,
pressed, selected, status, progress, and keyboard behavior on ordinary host DOM
where users and assistive technology expect it. Use `interaction-for` or the
`interactionTarget` property to associate that semantic control with motion.

`motion="auto"` follows live `prefers-reduced-motion`; `reduce` leaves the
host-owned fallback slot visible; `full` requests animation when exact
capabilities and resources permit it. Reduced motion still processes authored
state changes and bindings, but an infinite body does not advance. The host
fallback must convey an acceptable non-animated meaning.

Light-DOM fallback remains usable without JavaScript. Supply meaningful
alternative text when motion carries information, and empty alternative text
when it is decorative. The element does not capture keyboard events, suppress
clicks, or invent roles.