import { Skeleton } from "@/components/ui/skeleton";
import { Card, CardContent, CardHeader } from "@/components/ui/card";

export default function AnalyticsLoading() {
  return (
    <div className="space-y-6">
      <div>
        <Skeleton className="h-8 w-64 mb-2" />
        <Skeleton className="h-4 w-96" />
      </div>
      
      {/* Metrics Cards */}
      <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-6">
        {[...Array(4)].map((_, i) => (
          <Card key={i}>
            <CardHeader className="pb-2">
              <Skeleton className="h-4 w-24" />
            </CardHeader>
            <CardContent>
              <Skeleton className="h-8 w-20 mb-2" />
              <Skeleton className="h-3 w-32" />
            </CardContent>
          </Card>
        ))}
      </div>

      {/* Completion Rate Card */}
      <Card>
        <CardHeader>
          <Skeleton className="h-6 w-48 mb-2" />
          <Skeleton className="h-4 w-80" />
        </CardHeader>
        <CardContent>
          <div className="flex items-center gap-4">
            <Skeleton className="h-8 w-16" />
            <div className="flex-1">
              <Skeleton className="h-2 w-full" />
            </div>
            <Skeleton className="h-6 w-20" />
          </div>
        </CardContent>
      </Card>

      {/* Analytics Tabs */}
      <div className="space-y-6">
        <Skeleton className="h-10 w-full" />
        <Card>
          <CardHeader>
            <Skeleton className="h-6 w-48 mb-2" />
            <Skeleton className="h-4 w-80" />
          </CardHeader>
          <CardContent>
            <Skeleton className="h-64 w-full" />
          </CardContent>
        </Card>
      </div>
    </div>
  );
}