mc-dashboard/components/OfflineBanner.tsx

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"use client";
import { useEffect, useState } from "react";
export function OfflineBanner() {
const [online, setOnline] = useState(true);
useEffect(() => {
if (typeof navigator === "undefined") return;
setOnline(navigator.onLine);
const on = () => setOnline(true);
const off = () => setOnline(false);
window.addEventListener("online", on);
window.addEventListener("offline", off);
return () => {
window.removeEventListener("online", on);
window.removeEventListener("offline", off);
};
}, []);
if (online) return null;
return (
<div
role="status"
aria-live="polite"
className="sticky top-0 z-30 w-full bg-amber-500/20 border-b border-amber-500/30 text-amber-200 text-xs sm:text-sm px-3 py-1.5 text-center backdrop-blur"
>
You&apos;re offline showing cached data. Live updates will resume automatically.
</div>
);
}