diff --git a/client/src/components/stats-cards.tsx b/client/src/components/stats-cards.tsx
index 0051ce6..ad7fbee 100644
--- a/client/src/components/stats-cards.tsx
+++ b/client/src/components/stats-cards.tsx
@@ -1,8 +1,19 @@
 import { CalendarCheck, Users, Bot, Images, TrendingUp, TrendingDown } from "lucide-react";
 import { useQuery } from "@tanstack/react-query";
 
+interface StatsResponse {
+  scheduledPosts: number;
+  scheduledPostsChange?: string;
+  scheduledPostsTrending?: "up" | "down";
+  connectedPages: number;
+  aiTextsGenerated: number;
+  aiTextsChange?: string;
+  aiTextsTrending?: "up" | "down";
+  mediaStored: number;
+}
+
 export default function StatsCards() {
-  const { data: stats, isLoading } = useQuery({
+  const { data: stats, isLoading } = useQuery<StatsResponse>({
     queryKey: ["/api/stats"],
   });
 
@@ -10,32 +21,32 @@ export default function StatsCards() {
     {
       icon: CalendarCheck,
       iconColor: "from-blue-500 to-blue-600",
-      title: (stats as any)?.scheduledPosts ?? 0,
+      title: stats?.scheduledPosts ?? 0,
       subtitle: "Publications planifiées",
-      change: "+12%",
-      trending: "up",
+      change: stats?.scheduledPostsChange,
+      trending: stats?.scheduledPostsTrending,
       changeLabel: "vs mois dernier",
     },
     {
       icon: Users,
       iconColor: "from-purple-500 to-purple-600",
-      title: (stats as any)?.connectedPages ?? 0,
+      title: stats?.connectedPages ?? 0,
       subtitle: "Pages connectées",
       info: "Facebook • Instagram",
     },
     {
       icon: Bot,
       iconColor: "from-green-500 to-green-600",
-      title: (stats as any)?.aiTextsGenerated ?? 0,
+      title: stats?.aiTextsGenerated ?? 0,
       subtitle: "Textes générés par IA",
-      change: "+8%",
-      trending: "up",
+      change: stats?.aiTextsChange,
+      trending: stats?.aiTextsTrending,
       changeLabel: "vs hier",
     },
     {
       icon: Images,
       iconColor: "from-cyan-500 to-cyan-600",
-      title: (stats as any)?.mediaStored ?? 0,
+      title: stats?.mediaStored ?? 0,
       subtitle: "Médias stockés",
       info: "Images • Vidéos",
     },
diff --git a/server/routes.ts b/server/routes.ts
index 1e18e45..f92ba5a 100644
--- a/server/routes.ts
+++ b/server/routes.ts
@@ -369,12 +369,52 @@ export async function registerRoutes(app: Express): Promise<Server> {
       const media = await storage.getMedia(userId);
       const aiGenerations = await storage.getAiGenerations(userId);
 
+      // Statistiques actuelles
       const scheduledPosts = posts.filter(p => p.status === "scheduled").length;
+      const currentAiTexts = aiGenerations.length;
+      const currentMedia = media.length;
+
+      // Calculer les statistiques de la période précédente (hier pour les textes IA, mois dernier pour les posts)
+      const now = new Date();
+      const yesterday = new Date(now);
+      yesterday.setDate(yesterday.getDate() - 1);
+      yesterday.setHours(0, 0, 0, 0);
+      
+      const lastMonth = new Date(now);
+      lastMonth.setMonth(lastMonth.getMonth() - 1);
+
+      // Textes IA générés hier
+      const aiTextsYesterday = aiGenerations.filter(gen => {
+        if (!gen.createdAt) return false;
+        const genDate = new Date(gen.createdAt);
+        genDate.setHours(0, 0, 0, 0);
+        return genDate.getTime() === yesterday.getTime();
+      }).length;
+
+      // Posts planifiés le mois dernier
+      const scheduledPostsLastMonth = posts.filter(p => {
+        if (!p.createdAt) return false;
+        const createdDate = new Date(p.createdAt);
+        return p.status === "scheduled" && createdDate < lastMonth;
+      }).length;
+
+      // Calculer les variations en pourcentage
+      const aiTextChange = aiTextsYesterday > 0 
+        ? Math.round(((currentAiTexts - aiTextsYesterday) / aiTextsYesterday) * 100)
+        : currentAiTexts > 0 ? 100 : 0;
+
+      const scheduledPostsChange = scheduledPostsLastMonth > 0
+        ? Math.round(((scheduledPosts - scheduledPostsLastMonth) / scheduledPostsLastMonth) * 100)
+        : scheduledPosts > 0 ? 100 : 0;
 
       res.json({
         scheduledPosts,
+        scheduledPostsChange: scheduledPostsChange > 0 ? `+${scheduledPostsChange}%` : `${scheduledPostsChange}%`,
+        scheduledPostsTrending: scheduledPostsChange >= 0 ? "up" : "down",
         connectedPages: pages.length,
-        aiTextsGenerated: aiGenerations.length,
+        aiTextsGenerated: currentAiTexts,
+        aiTextsChange: aiTextChange > 0 ? `+${aiTextChange}%` : `${aiTextChange}%`,
+        aiTextsTrending: aiTextChange >= 0 ? "up" : "down",
         mediaStored: media.length,
       });
     } catch (error) {