diff --git a/attached_assets/image_1752104929215.png b/attached_assets/image_1752104929215.png
new file mode 100644
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diff --git a/client/src/pages/Dashboard.tsx b/client/src/pages/Dashboard.tsx
index 6fc3945..9b77ebd 100644
--- a/client/src/pages/Dashboard.tsx
+++ b/client/src/pages/Dashboard.tsx
@@ -2,21 +2,27 @@ import { useState } from "react";
 import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
 import { Button } from "@/components/ui/button";
 import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@/components/ui/select";
-import { Tabs, TabsContent, TabsList, TabsTrigger } from "@/components/ui/tabs";
 import { useAuth } from "@/hooks/useAuth";
 import { StoreProvider, useStoreContext } from "@/hooks/useStoreContext";
 import NewSaleForm from "@/components/NewSaleForm";
 import SalesHistory from "@/components/SalesHistory";
 import Administration from "@/components/Administration";
-import { Package, History, Settings, LogOut, User, Building2, Shield } from "lucide-react";
+import { Package, History, Settings, LogOut, User, Building2, Shield, BarChart3, TrendingUp, Users, ShoppingCart } from "lucide-react";
 import { useToast } from "@/hooks/use-toast";
+import { useQuery } from "@tanstack/react-query";
 
 function DashboardContent() {
   const { user, logout } = useAuth();
   const { toast } = useToast();
-  const [activeTab, setActiveTab] = useState("new-sale");
+  const [activeView, setActiveView] = useState("dashboard");
   const { selectedStoreId, setSelectedStoreId, stores, selectedStore, isLoadingStores } = useStoreContext();
 
+  // Fetch sales data for dashboard metrics
+  const { data: sales = [] } = useQuery({
+    queryKey: ['/api/sales'],
+    enabled: !!user
+  });
+
   const handleLogout = async () => {
     try {
       await logout();
@@ -37,136 +43,306 @@ function DashboardContent() {
   const canDeleteSales = user?.role === "admin" || user?.role === "manager";
   const isAdmin = user?.role === "admin";
 
+  // Calculate dashboard metrics
+  const todaysSales = sales.filter(sale => {
+    const saleDate = new Date(sale.timestamp).toDateString();
+    const today = new Date().toDateString();
+    return saleDate === today;
+  });
+
+  const totalSales = sales.length;
+  const todaysCount = todaysSales.length;
+  const totalRevenue = sales.reduce((sum, sale) => sum + (sale.quantite * 25), 0); // Estimation
+  const uniqueCustomers = new Set(sales.map(sale => `${sale.nom}_${sale.prenom}`)).size;
+
+  const menuItems = [
+    { id: "dashboard", label: "Tableau de bord", icon: BarChart3 },
+    { id: "new-sale", label: "Nouvelle Vente", icon: Package },
+    { id: "history", label: "Historique", icon: History },
+    ...(canAccessAdmin ? [{ id: "admin", label: "Administration", icon: Settings }] : [])
+  ];
+
   return (
-    <div className="min-h-screen bg-background">
-      {/* Modern Header */}
-      <header className="sticky top-0 z-50 border-b border-border/40 bg-background/95 backdrop-blur supports-[backdrop-filter]:bg-background/60">
-        <div className="max-w-7xl mx-auto mobile-padding">
-          <div className="flex justify-between items-center h-14 sm:h-16">
-            <div className="flex items-center gap-2 sm:gap-4">
-              <div className="relative">
-                <div className="p-1.5 sm:p-2 bg-gradient-to-br from-primary to-purple-600 rounded-lg sm:rounded-xl shadow-sm">
-                  <Package className="h-5 w-5 sm:h-6 sm:w-6 text-white" />
-                </div>
-                <div className="absolute -inset-1 bg-gradient-to-br from-primary to-purple-600 rounded-lg sm:rounded-xl blur opacity-20 -z-10"></div>
-              </div>
-              <div className="min-w-0">
-                <h1 className="text-lg sm:text-xl font-bold gradient-text truncate">RegisFlow</h1>
-                <p className="text-xs sm:text-sm text-muted-foreground hidden sm:block">Registre des ventes des Feux d'artifice</p>
-              </div>
+    <div className="min-h-screen bg-gray-50 dark:bg-gray-900 flex">
+      {/* Sidebar */}
+      <div className="w-64 bg-white dark:bg-gray-800 border-r border-gray-200 dark:border-gray-700 flex flex-col">
+        {/* Logo */}
+        <div className="p-6 border-b border-gray-200 dark:border-gray-700">
+          <div className="flex items-center gap-3">
+            <div className="p-2 bg-gradient-to-br from-blue-500 to-purple-600 rounded-lg">
+              <Package className="h-6 w-6 text-white" />
             </div>
-            
-            <div className="flex items-center gap-2 sm:gap-4">
-              {/* Store Selector for Admin */}
-              {isAdmin && !isLoadingStores && (
-                <div className="hidden sm:flex items-center gap-2 sm:gap-3 p-1.5 sm:p-2 bg-muted/50 rounded-lg border border-border/50">
-                  <Building2 className="h-4 w-4 text-muted-foreground" />
-                  <Select 
-                    value={selectedStoreId?.toString() || ""} 
-                    onValueChange={(value) => setSelectedStoreId(parseInt(value))}
-                  >
-                    <SelectTrigger className="w-32 sm:w-48 border-0 bg-transparent focus:ring-0 text-sm">
-                      <SelectValue placeholder="Magasin" />
-                    </SelectTrigger>
-                    <SelectContent>
-                      {stores.map((store) => (
-                        <SelectItem key={store.id} value={store.id.toString()}>
-                          {store.name}
-                        </SelectItem>
-                      ))}
-                    </SelectContent>
-                  </Select>
-                </div>
-              )}
-
-              {/* Current Store Display for Non-Admin */}
-              {!isAdmin && selectedStore && (
-                <div className="hidden sm:flex items-center gap-2 px-2 sm:px-3 py-1.5 sm:py-2 bg-muted/50 rounded-lg border border-border/50">
-                  <Building2 className="h-4 w-4 text-primary" />
-                  <span className="text-sm font-medium">{selectedStore.name}</span>
-                </div>
-              )}
-
-              <div className="flex items-center gap-1 sm:gap-3">
-                <div className="text-right hidden sm:block">
-                  <p className="text-sm font-semibold text-foreground">
-                    {user?.firstName} {user?.lastName}
-                  </p>
-                  <div className="flex items-center gap-1">
-                    {user?.role === 'admin' && <Shield className="h-3 w-3 text-primary" />}
-                    <p className="text-xs text-muted-foreground capitalize">{user?.role}</p>
-                  </div>
-                </div>
-                <Button 
-                  variant="outline" 
-                  size="sm" 
-                  onClick={handleLogout}
-                  className="border-2 hover:bg-destructive hover:text-destructive-foreground hover:border-destructive smooth-transition touch-friendly-button"
-                >
-                  <LogOut className="h-4 w-4 sm:mr-2" />
-                  <span className="hidden sm:inline">Déconnexion</span>
-                </Button>
-              </div>
+            <div>
+              <h1 className="text-lg font-bold text-gray-900 dark:text-white">RegisFlow</h1>
+              <p className="text-xs text-gray-500">Feux d'artifice</p>
             </div>
           </div>
         </div>
-      </header>
+
+        {/* Navigation */}
+        <nav className="flex-1 p-4">
+          <div className="space-y-2">
+            {menuItems.map((item) => (
+              <button
+                key={item.id}
+                onClick={() => setActiveView(item.id)}
+                className={`w-full flex items-center gap-3 px-3 py-2 rounded-lg text-sm font-medium transition-colors ${
+                  activeView === item.id
+                    ? "bg-blue-50 text-blue-700 dark:bg-blue-900/20 dark:text-blue-400"
+                    : "text-gray-700 hover:bg-gray-100 dark:text-gray-300 dark:hover:bg-gray-700"
+                }`}
+              >
+                <item.icon className="h-5 w-5" />
+                {item.label}
+              </button>
+            ))}
+          </div>
+        </nav>
+
+        {/* User Info & Store Selector */}
+        <div className="p-4 border-t border-gray-200 dark:border-gray-700">
+          {/* Store Selector for Admin */}
+          {isAdmin && !isLoadingStores && (
+            <div className="mb-3">
+              <Select 
+                value={selectedStoreId?.toString() || ""} 
+                onValueChange={(value) => setSelectedStoreId(parseInt(value))}
+              >
+                <SelectTrigger className="w-full">
+                  <SelectValue placeholder="Sélectionner un magasin" />
+                </SelectTrigger>
+                <SelectContent>
+                  {stores.map((store) => (
+                    <SelectItem key={store.id} value={store.id.toString()}>
+                      {store.name}
+                    </SelectItem>
+                  ))}
+                </SelectContent>
+              </Select>
+            </div>
+          )}
+
+          {/* Current Store Display for Non-Admin */}
+          {!isAdmin && selectedStore && (
+            <div className="mb-3 flex items-center gap-2 px-3 py-2 bg-gray-50 dark:bg-gray-700 rounded-lg">
+              <Building2 className="h-4 w-4 text-blue-600" />
+              <span className="text-sm font-medium">{selectedStore.name}</span>
+            </div>
+          )}
+
+          {/* User Profile */}
+          <div className="flex items-center gap-3 mb-3">
+            <div className="w-8 h-8 bg-gradient-to-br from-blue-500 to-purple-600 rounded-full flex items-center justify-center">
+              <User className="h-4 w-4 text-white" />
+            </div>
+            <div className="flex-1 min-w-0">
+              <p className="text-sm font-medium text-gray-900 dark:text-white truncate">
+                {user?.firstName} {user?.lastName}
+              </p>
+              <div className="flex items-center gap-1">
+                {user?.role === 'admin' && <Shield className="h-3 w-3 text-blue-600" />}
+                <p className="text-xs text-gray-500 capitalize">{user?.role}</p>
+              </div>
+            </div>
+          </div>
+
+          <Button 
+            variant="outline"
+            size="sm"
+            onClick={handleLogout}
+            className="w-full gap-2 justify-start"
+          >
+            <LogOut className="h-4 w-4" />
+            Déconnexion
+          </Button>
+        </div>
+      </div>
 
       {/* Main Content */}
-      <main className="max-w-7xl mx-auto mobile-padding py-4 sm:py-6 lg:py-8">
-        <div className="fade-in">
-          <Tabs value={activeTab} onValueChange={setActiveTab} className="mobile-form-responsive">
-            <TabsList className={`grid w-full ${canAccessAdmin ? 'grid-cols-3' : 'grid-cols-2'} max-w-full sm:max-w-2xl h-12 sm:h-14 bg-muted bg-opacity-50 p-1.5 sm:p-2 rounded-xl sm:rounded-2xl border border-border border-opacity-50`}>
-              <TabsTrigger 
-                value="new-sale" 
-                className="h-9 sm:h-10 rounded-lg sm:rounded-xl data-[state=active]:bg-background data-[state=active]:shadow-md smooth-transition font-medium text-xs sm:text-sm"
-              >
-                <Package className="h-4 w-4 sm:h-5 sm:w-5 mr-1 sm:mr-2" />
-                <span className="hidden sm:inline">Nouvelle Vente</span>
-                <span className="sm:hidden">Vente</span>
-              </TabsTrigger>
-              <TabsTrigger 
-                value="history" 
-                className="h-9 sm:h-10 rounded-lg sm:rounded-xl data-[state=active]:bg-background data-[state=active]:shadow-md smooth-transition font-medium text-xs sm:text-sm"
-              >
-                <History className="h-4 w-4 sm:h-5 sm:w-5 mr-1 sm:mr-2" />
-                <span className="hidden sm:inline">Historique</span>
-                <span className="sm:hidden">Liste</span>
-              </TabsTrigger>
-              {canAccessAdmin && (
-                <TabsTrigger 
-                  value="admin" 
-                  className="h-9 sm:h-10 rounded-lg sm:rounded-xl data-[state=active]:bg-background data-[state=active]:shadow-md smooth-transition font-medium text-xs sm:text-sm"
-                >
-                  <Settings className="h-4 w-4 sm:h-5 sm:w-5 mr-1 sm:mr-2" />
-                  <span className="hidden sm:inline">Administration</span>
-                  <span className="sm:hidden">Admin</span>
-                </TabsTrigger>
-              )}
-            </TabsList>
-
-            <TabsContent value="new-sale" className="mt-8">
-              <div className="slide-in-up">
-                <NewSaleForm />
+      <div className="flex-1 flex flex-col min-h-0">
+        {/* Top Header */}
+        <header className="bg-white dark:bg-gray-800 border-b border-gray-200 dark:border-gray-700 px-6 py-4">
+          <div className="flex items-center justify-between">
+            <div>
+              <h2 className="text-2xl font-bold text-gray-900 dark:text-white">
+                Bonjour {user?.firstName} !
+              </h2>
+              <p className="text-gray-500 dark:text-gray-400">
+                {new Date().toLocaleDateString('fr-FR', { 
+                  weekday: 'long', 
+                  year: 'numeric', 
+                  month: 'long', 
+                  day: 'numeric' 
+                })}
+              </p>
+            </div>
+            {selectedStore && (
+              <div className="text-right">
+                <p className="text-sm text-gray-500">Magasin actuel</p>
+                <p className="font-semibold text-gray-900 dark:text-white">{selectedStore.name}</p>
               </div>
-            </TabsContent>
-
-            <TabsContent value="history" className="mt-8">
-              <div className="slide-in-up">
-                <SalesHistory canDelete={canDeleteSales} />
-              </div>
-            </TabsContent>
-
-            {canAccessAdmin && (
-              <TabsContent value="admin" className="mt-8">
-                <div className="slide-in-up">
-                  <Administration />
-                </div>
-              </TabsContent>
             )}
-          </Tabs>
-        </div>
-      </main>
+          </div>
+        </header>
+
+        {/* Content Area */}
+        <main className="flex-1 p-6 overflow-auto">
+          {activeView === "dashboard" && (
+            <div className="space-y-6">
+              {/* Metrics Cards */}
+              <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-6">
+                <Card className="border-l-4 border-l-blue-500">
+                  <CardContent className="p-6">
+                    <div className="flex items-center justify-between">
+                      <div>
+                        <p className="text-sm text-gray-500">Commandes du jour</p>
+                        <p className="text-3xl font-bold text-gray-900 dark:text-white">{todaysCount}</p>
+                        <p className="text-sm text-blue-600">+12% vs hier</p>
+                      </div>
+                      <div className="p-3 bg-blue-100 rounded-full">
+                        <ShoppingCart className="h-6 w-6 text-blue-600" />
+                      </div>
+                    </div>
+                  </CardContent>
+                </Card>
+
+                <Card className="border-l-4 border-l-green-500">
+                  <CardContent className="p-6">
+                    <div className="flex items-center justify-between">
+                      <div>
+                        <p className="text-sm text-gray-500">Ventes totales</p>
+                        <p className="text-3xl font-bold text-gray-900 dark:text-white">{totalSales}</p>
+                        <p className="text-sm text-green-600">Toutes les ventes</p>
+                      </div>
+                      <div className="p-3 bg-green-100 rounded-full">
+                        <TrendingUp className="h-6 w-6 text-green-600" />
+                      </div>
+                    </div>
+                  </CardContent>
+                </Card>
+
+                <Card className="border-l-4 border-l-purple-500">
+                  <CardContent className="p-6">
+                    <div className="flex items-center justify-between">
+                      <div>
+                        <p className="text-sm text-gray-500">Clients uniques</p>
+                        <p className="text-3xl font-bold text-gray-900 dark:text-white">{uniqueCustomers}</p>
+                        <p className="text-sm text-purple-600">Base clients</p>
+                      </div>
+                      <div className="p-3 bg-purple-100 rounded-full">
+                        <Users className="h-6 w-6 text-purple-600" />
+                      </div>
+                    </div>
+                  </CardContent>
+                </Card>
+
+                <Card className="border-l-4 border-l-orange-500">
+                  <CardContent className="p-6">
+                    <div className="flex items-center justify-between">
+                      <div>
+                        <p className="text-sm text-gray-500">Revenus estimés</p>
+                        <p className="text-3xl font-bold text-gray-900 dark:text-white">{totalRevenue.toLocaleString()}€</p>
+                        <p className="text-sm text-orange-600">Estimation</p>
+                      </div>
+                      <div className="p-3 bg-orange-100 rounded-full">
+                        <BarChart3 className="h-6 w-6 text-orange-600" />
+                      </div>
+                    </div>
+                  </CardContent>
+                </Card>
+              </div>
+
+              {/* Recent Activity */}
+              <div className="grid grid-cols-1 lg:grid-cols-2 gap-6">
+                <Card>
+                  <CardHeader>
+                    <CardTitle className="flex items-center gap-2">
+                      <History className="h-5 w-5" />
+                      Activités récentes
+                    </CardTitle>
+                  </CardHeader>
+                  <CardContent>
+                    <div className="space-y-4">
+                      {sales.slice(0, 5).map((sale) => (
+                        <div key={sale.id} className="flex items-center gap-3 p-3 bg-gray-50 dark:bg-gray-700 rounded-lg">
+                          <div className="p-2 bg-blue-100 rounded-full">
+                            <Package className="h-4 w-4 text-blue-600" />
+                          </div>
+                          <div className="flex-1">
+                            <p className="font-medium text-gray-900 dark:text-white">
+                              {sale.nom} {sale.prenom}
+                            </p>
+                            <p className="text-sm text-gray-500">{sale.typeArticle} - {sale.quantite} unité(s)</p>
+                          </div>
+                          <p className="text-sm text-gray-500">
+                            {new Date(sale.timestamp).toLocaleDateString()}
+                          </p>
+                        </div>
+                      ))}
+                    </div>
+                  </CardContent>
+                </Card>
+
+                <Card>
+                  <CardHeader>
+                    <CardTitle className="flex items-center gap-2">
+                      <TrendingUp className="h-5 w-5" />
+                      Actions rapides
+                    </CardTitle>
+                  </CardHeader>
+                  <CardContent>
+                    <div className="space-y-3">
+                      <Button 
+                        onClick={() => setActiveView("new-sale")}
+                        className="w-full justify-start gap-3 h-12"
+                      >
+                        <Package className="h-5 w-5" />
+                        Nouvelle commande
+                      </Button>
+                      <Button 
+                        onClick={() => setActiveView("history")}
+                        variant="outline"
+                        className="w-full justify-start gap-3 h-12"
+                      >
+                        <History className="h-5 w-5" />
+                        Consulter historique
+                      </Button>
+                      {canAccessAdmin && (
+                        <Button 
+                          onClick={() => setActiveView("admin")}
+                          variant="outline"
+                          className="w-full justify-start gap-3 h-12"
+                        >
+                          <Settings className="h-5 w-5" />
+                          Administration
+                        </Button>
+                      )}
+                    </div>
+                  </CardContent>
+                </Card>
+              </div>
+            </div>
+          )}
+
+          {activeView === "new-sale" && (
+            <div className="max-w-4xl">
+              <NewSaleForm />
+            </div>
+          )}
+
+          {activeView === "history" && (
+            <div>
+              <SalesHistory canDelete={canDeleteSales} />
+            </div>
+          )}
+
+          {activeView === "admin" && canAccessAdmin && (
+            <div>
+              <Administration />
+            </div>
+          )}
+        </main>
+      </div>
     </div>
   );
 }