Module Update

src/app/(dashboard)/teacher/textbooks/[id]/loading.tsx

@@ -0,0 +1,66 @@
+import { Skeleton } from "@/shared/components/ui/skeleton";
+import { Separator } from "@/shared/components/ui/separator";
+
+export default function Loading() {
+  return (
+    <div className="space-y-6 max-w-5xl mx-auto">
+      {/* Header Skeleton */}
+      <div className="flex items-center gap-4">
+        <Skeleton className="h-10 w-10 rounded-md" /> {/* Back Button */}
+        <div className="flex-1 space-y-2">
+          <div className="flex items-center gap-2">
+            <Skeleton className="h-5 w-16" />
+            <Skeleton className="h-4 w-24" />
+          </div>
+          <Skeleton className="h-8 w-64" />
+        </div>
+        <Skeleton className="h-10 w-32" /> {/* Edit Button */}
+      </div>
+
+      <div className="grid grid-cols-1 md:grid-cols-3 gap-8">
+        {/* Main Content Skeleton */}
+        <div className="md:col-span-2 space-y-6">
+          <div className="flex items-center justify-between">
+            <Skeleton className="h-6 w-40" />
+            <Skeleton className="h-8 w-24" />
+          </div>
+          
+          <div className="rounded-lg border bg-card p-6 space-y-4">
+             {Array.from({ length: 5 }).map((_, i) => (
+                <div key={i} className="flex items-center gap-4">
+                    <Skeleton className="h-6 w-6 rounded-md" />
+                    <Skeleton className="h-6 w-full rounded-md" />
+                </div>
+             ))}
+          </div>
+        </div>
+
+        {/* Sidebar Skeleton */}
+        <div className="space-y-6">
+          <div className="rounded-lg border bg-card p-6 space-y-4">
+             <Skeleton className="h-6 w-32 mb-4" />
+             <div className="space-y-2">
+                <Skeleton className="h-4 w-16" />
+                <Skeleton className="h-5 w-32" />
+             </div>
+             <div className="space-y-2">
+                <Skeleton className="h-4 w-20" />
+                <Skeleton className="h-20 w-full" />
+             </div>
+             <Separator />
+             <div className="grid grid-cols-2 gap-4">
+                <div className="space-y-2">
+                    <Skeleton className="h-3 w-12" />
+                    <Skeleton className="h-4 w-24" />
+                </div>
+                <div className="space-y-2">
+                    <Skeleton className="h-3 w-12" />
+                    <Skeleton className="h-4 w-24" />
+                </div>
+             </div>
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+}