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fix(a11y): respect prefers-reduced-motion in BackToTopButton #3226

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fix(a11y): respect prefers-reduced-motion in BackToTopButton #3226

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c925bff
fix(a11y): respect prefers-reduced-motion in BackToTopButton
Shan7Usmani Jul 22, 2026
ae91992
ci: re-trigger star check
Shan7Usmani Jul 25, 2026
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14 changes: 12 additions & 2 deletions src/components/BackToTopButton.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -17,11 +17,21 @@ export default function BackToTopButton() {
}
};

const [prefersReducedMotion, setPrefersReducedMotion] = useState(false);

useEffect(() => {
const mq = window.matchMedia("(prefers-reduced-motion: reduce)");
setPrefersReducedMotion(mq.matches);
const handler = (e: MediaQueryListEvent) => setPrefersReducedMotion(e.matches);
mq.addEventListener("change", handler);
return () => mq.removeEventListener("change", handler);
}, []);

const scrollToTop = () => {
if (typeof window !== "undefined") {
window.scrollTo({
top: 0,
behavior: "smooth",
behavior: prefersReducedMotion ? "auto" : "smooth",
});
}
};
Expand Down Expand Up @@ -70,7 +80,7 @@ export default function BackToTopButton() {
strokeDasharray={circumference}
strokeDashoffset={strokeDashoffset}
style={{ filter: "drop-shadow(0 0 6px color-mix(in srgb, var(--accent) 60%, transparent))" }}
className="transition-[stroke-dashoffset] duration-100"
className={`transition-[stroke-dashoffset] duration-100 ${prefersReducedMotion ? "!transition-none" : ""}`}
/>
</svg>
<button
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