roboco/panel/src/components/ui/offline-state.tsx

import { Card, CardContent, CardHeader, CardTitle, CardDescription } from "@/components/ui/card";
import { WifiOff, RefreshCw } from "lucide-react";
import { Button } from "@/components/ui/button";

interface OfflineStateProps {
  title?: string;
  description?: string;
  onRetry?: () => void;
}

export function OfflineState({ 
  title = "Backend Not Connected",
  description = "The orchestrator API is not available. Start the backend to see live data.",
  onRetry,
}: OfflineStateProps) {
  return (
    <Card className="border-dashed">
      <CardHeader className="text-center">
        <div className="mx-auto w-12 h-12 rounded-full bg-muted flex items-center justify-center mb-2">
          <WifiOff className="h-6 w-6 text-muted-foreground" />
        </div>
        <CardTitle className="text-lg">{title}</CardTitle>
        <CardDescription>{description}</CardDescription>
      </CardHeader>
      {onRetry && (
        <CardContent className="text-center">
          <Button variant="outline" onClick={onRetry}>
            <RefreshCw className="h-4 w-4 mr-2" />
            Retry
          </Button>
        </CardContent>
      )}
    </Card>
  );
}