diff --git a/admin/src/api/client.ts b/admin/src/api/client.ts
index dd5b0f8f..5914a8e9 100644
--- a/admin/src/api/client.ts
+++ b/admin/src/api/client.ts
@@ -23,6 +23,12 @@ export function isDemoActive(): boolean {
   return demoActive;
 }
 
+// Deactivate demo mode (on logout) — interceptor will pass through to real backend
+export function deactivateDemoMode(): void {
+  demoActive = false;
+  demoReady = null;
+}
+
 // Auto-activate demo if page reloads with a demo token in localStorage
 function checkDemoToken(): boolean {
   const token = localStorage.getItem("admin_token");
diff --git a/admin/src/api/demo/index.ts b/admin/src/api/demo/index.ts
index bcef6661..17eea499 100644
--- a/admin/src/api/demo/index.ts
+++ b/admin/src/api/demo/index.ts
@@ -1,4 +1,5 @@
 import type { DemoRoute, HttpMethod, RouteParams } from './types'
+import { isDemoActive } from '../client'
 import { initStore } from './store'
 import { authRoutes } from './auth'
 import { servicesRoutes } from './services'
@@ -136,6 +137,11 @@ export function setupDemoInterceptor() {
         : input.url
     const method = (init?.method || 'GET').toUpperCase() as HttpMethod
 
+    // Pass through to real backend if demo mode was deactivated
+    if (!isDemoActive()) {
+      return originalFetch(input, init)
+    }
+
     // Only intercept API routes
     const isApiRoute = url.startsWith('/admin/') || url.startsWith('/v1/') || url.startsWith('/health')
     if (!isApiRoute) {
diff --git a/admin/src/stores/auth.ts b/admin/src/stores/auth.ts
index 65f90b1f..7d005a25 100644
--- a/admin/src/stores/auth.ts
+++ b/admin/src/stores/auth.ts
@@ -1,6 +1,6 @@
 import { defineStore } from 'pinia'
 import { ref, computed } from 'vue'
-import { activateDemoMode, isDemoActive } from '@/api/client'
+import { activateDemoMode, isDemoActive, deactivateDemoMode } from '@/api/client'
 
 export type UserRole = 'admin' | 'user' | 'web' | 'guest'
 
@@ -189,6 +189,9 @@ export const useAuthStore = defineStore('auth', () => {
   }
 
   function logout() {
+    if (isDemoActive()) {
+      deactivateDemoMode()
+    }
     token.value = null
     user.value = null
     permissions.value = {}