feat: Implement collapsible sidebar navigation

src/App.tsx

@@ -33,7 +33,10 @@ import NotFound from "./pages/NotFound";
 import Terms from "./pages/Terms";
 import Privacy from "./pages/Privacy";
 import SubmissionGuidelines from "./pages/SubmissionGuidelines";
-import Admin from "./pages/Admin";
+import AdminDashboard from "./pages/AdminDashboard";
+import AdminModeration from "./pages/AdminModeration";
+import AdminReports from "./pages/AdminReports";
+import AdminUsers from "./pages/AdminUsers";
 import AdminSettings from "./pages/AdminSettings";
 
 const queryClient = new QueryClient();
@@ -71,7 +74,10 @@ function AppContent() {
                 <Route path="/profile" element={<Profile />} />
                 <Route path="/profile/:username" element={<Profile />} />
                 <Route path="/settings" element={<UserSettings />} />
-                <Route path="/admin" element={<Admin />} />
+            <Route path="/admin" element={<AdminDashboard />} />
+            <Route path="/admin/moderation" element={<AdminModeration />} />
+            <Route path="/admin/reports" element={<AdminReports />} />
+            <Route path="/admin/users" element={<AdminUsers />} />
                 <Route path="/admin/settings" element={<AdminSettings />} />
                 <Route path="/terms" element={<Terms />} />
                 <Route path="/privacy" element={<Privacy />} />

src/components/layout/AdminLayout.tsx

@@ -0,0 +1,62 @@
+import { ReactNode, useEffect } from 'react';
+import { useNavigate } from 'react-router-dom';
+import { SidebarProvider } from '@/components/ui/sidebar';
+import { AdminSidebar } from './AdminSidebar';
+import { AdminTopBar } from './AdminTopBar';
+import { useAuth } from '@/hooks/useAuth';
+import { useUserRole } from '@/hooks/useUserRole';
+
+interface AdminLayoutProps {
+  children: ReactNode;
+  onRefresh?: () => void;
+  isRefreshing?: boolean;
+}
+
+export function AdminLayout({ children, onRefresh, isRefreshing }: AdminLayoutProps) {
+  const { user, loading: authLoading } = useAuth();
+  const { isModerator, loading: roleLoading } = useUserRole();
+  const navigate = useNavigate();
+
+  useEffect(() => {
+    if (!authLoading && !roleLoading) {
+      if (!user) {
+        navigate('/auth');
+        return;
+      }
+      
+      if (!isModerator()) {
+        navigate('/');
+        return;
+      }
+    }
+  }, [user, authLoading, roleLoading, navigate, isModerator]);
+
+  if (authLoading || roleLoading) {
+    return (
+      <div className="flex items-center justify-center min-h-screen">
+        <div className="text-center">
+          <div className="animate-spin rounded-full h-8 w-8 border-b-2 border-primary mx-auto mb-4"></div>
+          <p className="text-muted-foreground">Loading admin panel...</p>
+        </div>
+      </div>
+    );
+  }
+
+  if (!user || !isModerator()) {
+    return null;
+  }
+
+  return (
+    <SidebarProvider defaultOpen={true}>
+      <div className="flex min-h-screen w-full">
+        <AdminSidebar />
+        <main className="flex-1 flex flex-col">
+          <AdminTopBar onRefresh={onRefresh} isRefreshing={isRefreshing} />
+          <div className="flex-1 overflow-auto">
+            {children}
+          </div>
+        </main>
+      </div>
+    </SidebarProvider>
+  );
+}

src/components/layout/AdminSidebar.tsx

@@ -0,0 +1,148 @@
+import { LayoutDashboard, FileText, Flag, Users, Settings, ArrowLeft } from 'lucide-react';
+import { NavLink, useLocation } from 'react-router-dom';
+import {
+  Sidebar,
+  SidebarContent,
+  SidebarGroup,
+  SidebarGroupContent,
+  SidebarGroupLabel,
+  SidebarMenu,
+  SidebarMenuButton,
+  SidebarMenuItem,
+  SidebarFooter,
+  SidebarHeader,
+  useSidebar,
+} from '@/components/ui/sidebar';
+import { cn } from '@/lib/utils';
+import { useUserRole } from '@/hooks/useUserRole';
+
+const navigationItems = [
+  {
+    title: 'Dashboard',
+    url: '/admin',
+    icon: LayoutDashboard,
+  },
+  {
+    title: 'Moderation Queue',
+    url: '/admin/moderation',
+    icon: FileText,
+  },
+  {
+    title: 'Reports',
+    url: '/admin/reports',
+    icon: Flag,
+  },
+  {
+    title: 'User Management',
+    url: '/admin/users',
+    icon: Users,
+  },
+];
+
+export function AdminSidebar() {
+  const location = useLocation();
+  const { state } = useSidebar();
+  const { isSuperuser } = useUserRole();
+  const isCollapsed = state === 'collapsed';
+
+  const isActive = (path: string) => {
+    if (path === '/admin') {
+      return location.pathname === '/admin';
+    }
+    return location.pathname.startsWith(path);
+  };
+
+  return (
+    <Sidebar collapsible="icon" className="border-r">
+      <SidebarHeader className="border-b px-4 py-3">
+        <div className="flex items-center gap-2">
+          <div className="flex h-8 w-8 items-center justify-center rounded-lg bg-primary text-primary-foreground">
+            <span className="text-sm font-bold">TW</span>
+          </div>
+          {!isCollapsed && (
+            <div className="flex flex-col">
+              <span className="text-sm font-semibold">ThrillWiki</span>
+              <span className="text-xs text-muted-foreground">Admin Panel</span>
+            </div>
+          )}
+        </div>
+      </SidebarHeader>
+
+      <SidebarContent>
+        <SidebarGroup>
+          <SidebarGroupLabel>Navigation</SidebarGroupLabel>
+          <SidebarGroupContent>
+            <SidebarMenu>
+              {navigationItems.map((item) => (
+                <SidebarMenuItem key={item.url}>
+                  <SidebarMenuButton
+                    asChild
+                    isActive={isActive(item.url)}
+                    tooltip={isCollapsed ? item.title : undefined}
+                  >
+                    <NavLink
+                      to={item.url}
+                      end={item.url === '/admin'}
+                      className={({ isActive }) =>
+                        cn(
+                          'flex items-center gap-3 rounded-md transition-colors',
+                          isActive
+                            ? 'bg-primary/10 text-primary font-medium'
+                            : 'hover:bg-muted/50'
+                        )
+                      }
+                    >
+                      <item.icon className="h-5 w-5" />
+                      {!isCollapsed && <span>{item.title}</span>}
+                    </NavLink>
+                  </SidebarMenuButton>
+                </SidebarMenuItem>
+              ))}
+
+              {isSuperuser() && (
+                <SidebarMenuItem>
+                  <SidebarMenuButton
+                    asChild
+                    isActive={isActive('/admin/settings')}
+                    tooltip={isCollapsed ? 'Settings' : undefined}
+                  >
+                    <NavLink
+                      to="/admin/settings"
+                      className={({ isActive }) =>
+                        cn(
+                          'flex items-center gap-3 rounded-md transition-colors',
+                          isActive
+                            ? 'bg-primary/10 text-primary font-medium'
+                            : 'hover:bg-muted/50'
+                        )
+                      }
+                    >
+                      <Settings className="h-5 w-5" />
+                      {!isCollapsed && <span>Settings</span>}
+                    </NavLink>
+                  </SidebarMenuButton>
+                </SidebarMenuItem>
+              )}
+            </SidebarMenu>
+          </SidebarGroupContent>
+        </SidebarGroup>
+      </SidebarContent>
+
+      <SidebarFooter className="border-t p-2">
+        <SidebarMenu>
+          <SidebarMenuItem>
+            <SidebarMenuButton asChild tooltip={isCollapsed ? 'Back to ThrillWiki' : undefined}>
+              <NavLink
+                to="/"
+                className="flex items-center gap-3 text-muted-foreground hover:text-foreground transition-colors"
+              >
+                <ArrowLeft className="h-5 w-5" />
+                {!isCollapsed && <span>Back to ThrillWiki</span>}
+              </NavLink>
+            </SidebarMenuButton>
+          </SidebarMenuItem>
+        </SidebarMenu>
+      </SidebarFooter>
+    </Sidebar>
+  );
+}

src/components/layout/AdminTopBar.tsx

@@ -0,0 +1,38 @@
+import { RefreshCw } from 'lucide-react';
+import { Button } from '@/components/ui/button';
+import { SidebarTrigger } from '@/components/ui/sidebar';
+import { ThemeToggle } from '@/components/theme/ThemeToggle';
+import { NotificationCenter } from '@/components/notifications/NotificationCenter';
+import { AuthButtons } from '@/components/auth/AuthButtons';
+
+interface AdminTopBarProps {
+  onRefresh?: () => void;
+  isRefreshing?: boolean;
+}
+
+export function AdminTopBar({ onRefresh, isRefreshing }: AdminTopBarProps) {
+  return (
+    <header className="sticky top-0 z-10 flex h-14 items-center gap-4 border-b bg-background/95 backdrop-blur supports-[backdrop-filter]:bg-background/60 px-4">
+      <SidebarTrigger className="-ml-1" />
+      
+      {onRefresh && (
+        <Button
+          variant="ghost"
+          size="sm"
+          onClick={onRefresh}
+          disabled={isRefreshing}
+          className="gap-2"
+        >
+          <RefreshCw className={`h-4 w-4 ${isRefreshing ? 'animate-spin' : ''}`} />
+          <span className="hidden sm:inline">Refresh</span>
+        </Button>
+      )}
+
+      <div className="ml-auto flex items-center gap-2">
+        <NotificationCenter />
+        <ThemeToggle />
+        <AuthButtons />
+      </div>
+    </header>
+  );
+}

src/pages/AdminDashboard.tsx

@@ -0,0 +1,116 @@
+import { useRef, useCallback } from 'react';
+import { RefreshCw, FileText, Flag, AlertCircle } from 'lucide-react';
+import { Card, CardContent } from '@/components/ui/card';
+import { AdminLayout } from '@/components/layout/AdminLayout';
+import { useModerationStats } from '@/hooks/useModerationStats';
+import { useAdminSettings } from '@/hooks/useAdminSettings';
+import { useAuth } from '@/hooks/useAuth';
+import { useUserRole } from '@/hooks/useUserRole';
+
+export default function AdminDashboard() {
+  const { user, loading: authLoading } = useAuth();
+  const { isModerator, loading: roleLoading } = useUserRole();
+  
+  // Get admin settings for polling configuration
+  const { 
+    getAdminPanelRefreshMode, 
+    getAdminPanelPollInterval,
+  } = useAdminSettings();
+  
+  const refreshMode = getAdminPanelRefreshMode();
+  const pollInterval = getAdminPanelPollInterval();
+  
+  // Use stats hook with configurable polling
+  const { stats, refresh: refreshStats, lastUpdated } = useModerationStats({
+    enabled: !!user && !authLoading && !roleLoading && isModerator(),
+    pollingEnabled: refreshMode === 'auto',
+    pollingInterval: pollInterval,
+  });
+
+  const handleRefresh = useCallback(() => {
+    refreshStats();
+  }, [refreshStats]);
+
+  return (
+    <AdminLayout onRefresh={handleRefresh}>
+      <div className="container mx-auto px-6 py-8 max-w-7xl">
+        {/* Refresh status indicator */}
+        <div className="flex items-center gap-2 text-xs text-muted-foreground mb-6">
+          <RefreshCw className="w-3 h-3" />
+          {refreshMode === 'auto' ? (
+            <span>Auto-refresh: every {pollInterval / 1000}s</span>
+          ) : (
+            <span>Manual refresh</span>
+          )}
+          {lastUpdated && (
+            <span>• {lastUpdated.toLocaleTimeString()}</span>
+          )}
+        </div>
+
+        {/* Stats Overview */}
+        <div>
+          <h1 className="text-2xl font-bold mb-6">Dashboard Overview</h1>
+          
+          <div className="grid grid-cols-1 md:grid-cols-3 gap-4">
+            <Card className="border-border/50 hover:border-border/80 transition-colors">
+              <CardContent className="p-4">
+                <div className="flex items-center justify-between">
+                  <div className="flex items-center gap-3">
+                    <div className="p-2 rounded-lg bg-amber-500/10">
+                      <FileText className="h-5 w-5 text-amber-700 dark:text-amber-300" />
+                    </div>
+                    <div>
+                      <p className="text-sm font-medium text-muted-foreground">Pending</p>
+                      <p className="text-xs text-muted-foreground/80">Submissions</p>
+                    </div>
+                  </div>
+                  <div className="text-4xl font-bold text-amber-700 dark:text-amber-300">
+                    {stats.pendingSubmissions}
+                  </div>
+                </div>
+              </CardContent>
+            </Card>
+            
+            <Card className="border-border/50 hover:border-border/80 transition-colors">
+              <CardContent className="p-4">
+                <div className="flex items-center justify-between">
+                  <div className="flex items-center gap-3">
+                    <div className="p-2 rounded-lg bg-red-500/10">
+                      <Flag className="h-5 w-5 text-red-700 dark:text-red-300" />
+                    </div>
+                    <div>
+                      <p className="text-sm font-medium text-muted-foreground">Open</p>
+                      <p className="text-xs text-muted-foreground/80">Reports</p>
+                    </div>
+                  </div>
+                  <div className="text-4xl font-bold text-red-700 dark:text-red-300">
+                    {stats.openReports}
+                  </div>
+                </div>
+              </CardContent>
+            </Card>
+            
+            <Card className="border-border/50 hover:border-border/80 transition-colors">
+              <CardContent className="p-4">
+                <div className="flex items-center justify-between">
+                  <div className="flex items-center gap-3">
+                    <div className="p-2 rounded-lg bg-orange-500/10">
+                      <AlertCircle className="h-5 w-5 text-orange-700 dark:text-orange-300" />
+                    </div>
+                    <div>
+                      <p className="text-sm font-medium text-muted-foreground">Flagged</p>
+                      <p className="text-xs text-muted-foreground/80">Content</p>
+                    </div>
+                  </div>
+                  <div className="text-4xl font-bold text-orange-700 dark:text-orange-300">
+                    {stats.flaggedContent}
+                  </div>
+                </div>
+              </CardContent>
+            </Card>
+          </div>
+        </div>
+      </div>
+    </AdminLayout>
+  );
+}

src/pages/AdminModeration.tsx

@@ -0,0 +1,22 @@
+import { useRef, useCallback } from 'react';
+import { AdminLayout } from '@/components/layout/AdminLayout';
+import { ModerationQueue, ModerationQueueRef } from '@/components/moderation/ModerationQueue';
+
+export default function AdminModeration() {
+  const moderationQueueRef = useRef<ModerationQueueRef>(null);
+
+  const handleRefresh = useCallback(() => {
+    moderationQueueRef.current?.refresh();
+  }, []);
+
+  return (
+    <AdminLayout onRefresh={handleRefresh}>
+      <div className="container mx-auto px-6 py-8 max-w-7xl">
+        <div>
+          <h1 className="text-2xl font-bold mb-6">Moderation Queue</h1>
+          <ModerationQueue ref={moderationQueueRef} />
+        </div>
+      </div>
+    </AdminLayout>
+  );
+}

src/pages/AdminReports.tsx

@@ -0,0 +1,22 @@
+import { useRef, useCallback } from 'react';
+import { AdminLayout } from '@/components/layout/AdminLayout';
+import { ReportsQueue, ReportsQueueRef } from '@/components/moderation/ReportsQueue';
+
+export default function AdminReports() {
+  const reportsQueueRef = useRef<ReportsQueueRef>(null);
+
+  const handleRefresh = useCallback(() => {
+    reportsQueueRef.current?.refresh();
+  }, []);
+
+  return (
+    <AdminLayout onRefresh={handleRefresh}>
+      <div className="container mx-auto px-6 py-8 max-w-7xl">
+        <div>
+          <h1 className="text-2xl font-bold mb-6">Reports Queue</h1>
+          <ReportsQueue ref={reportsQueueRef} />
+        </div>
+      </div>
+    </AdminLayout>
+  );
+}

src/pages/AdminSettings.tsx

@@ -7,7 +7,7 @@ import { Switch } from '@/components/ui/switch';
 import { Tabs, TabsContent, TabsList, TabsTrigger } from '@/components/ui/tabs';
 import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@/components/ui/select';
 import { Badge } from '@/components/ui/badge';
-import { AdminHeader } from '@/components/layout/AdminHeader';
+import { AdminLayout } from '@/components/layout/AdminLayout';
 import { useAuth } from '@/hooks/useAuth';
 import { useUserRole } from '@/hooks/useUserRole';
 import { useAdminSettings } from '@/hooks/useAdminSettings';
@@ -28,20 +28,18 @@ export default function AdminSettings() {
 
   if (roleLoading || isLoading) {
     return (
-      <>
-        <AdminHeader />
+      <AdminLayout>
         <div className="flex items-center justify-center min-h-screen">
           <Loader2 className="w-8 h-8 animate-spin" />
         </div>
-      </>
+      </AdminLayout>
     );
   }
 
   if (!user || !isSuperuser()) {
     return (
-      <>
-        <AdminHeader />
-        <div className="container mx-auto px-4 py-8">
+      <AdminLayout>
+        <div className="container mx-auto px-6 py-8">
           <div className="text-center space-y-4">
             <h1 className="text-2xl font-bold mb-4">Access Denied</h1>
             <p className="text-muted-foreground">You don't have permission to access admin settings.</p>
@@ -52,15 +50,14 @@ export default function AdminSettings() {
             )}
           </div>
         </div>
-      </>
+      </AdminLayout>
     );
   }
 
   if (!settings || settings.length === 0) {
     return (
-      <>
-        <AdminHeader />
-        <div className="container mx-auto px-4 py-8">
+      <AdminLayout>
+        <div className="container mx-auto px-6 py-8">
           <div className="text-center space-y-4">
             <h1 className="text-2xl font-bold mb-4">No Settings Found</h1>
             <p className="text-muted-foreground">
@@ -73,7 +70,7 @@ export default function AdminSettings() {
             )}
           </div>
         </div>
-      </>
+      </AdminLayout>
     );
   }
 
@@ -431,11 +428,10 @@ export default function AdminSettings() {
   };
 
   return (
-    <>
-      <AdminHeader />
-      <div className="container mx-auto px-4 py-8 max-w-4xl">
+    <AdminLayout>
+      <div className="container mx-auto px-6 py-8 max-w-6xl">
         <div className="mb-8">
-          <h1 className="text-3xl font-bold mb-2">Admin Settings</h1>
+          <h1 className="text-2xl font-bold mb-2">Admin Settings</h1>
           <p className="text-muted-foreground">
             Configure system-wide settings and preferences with easy-to-use controls
           </p>
@@ -598,6 +594,6 @@ export default function AdminSettings() {
           </TabsContent>
         </Tabs>
       </div>
-    </>
+    </AdminLayout>
   );
 }

src/pages/AdminUsers.tsx

@@ -0,0 +1,15 @@
+import { AdminLayout } from '@/components/layout/AdminLayout';
+import { UserManagement } from '@/components/admin/UserManagement';
+
+export default function AdminUsers() {
+  return (
+    <AdminLayout>
+      <div className="container mx-auto px-6 py-8 max-w-7xl">
+        <div>
+          <h1 className="text-2xl font-bold mb-6">User Management</h1>
+          <UserManagement />
+        </div>
+      </div>
+    </AdminLayout>
+  );
+}