diff --git a/src/components/Navbar.tsx b/src/components/Navbar.tsx
index dab3a24..6e30383 100644
--- a/src/components/Navbar.tsx
+++ b/src/components/Navbar.tsx
@@ -3,13 +3,14 @@ import { useNavigate } from "react-router-dom"
 import { useTranslation } from "../hooks/useTranslation"
 import { Button } from "./ui/button"
 import { SettingsMenu } from "./SettingsMenu"
-import { LogOut, User, Moon, Sun, Globe, Command, Menu } from "lucide-react"
+import { FlaskConical, LogOut, User, Moon, Sun, Globe, Command, Menu, RefreshCcw } from "lucide-react"
 import { useTheme } from "./ThemeProvider"
 import { logoutUser, getUserProfile } from "../api/users"
 import { WorkspaceSelector } from "./WorkspaceSelector"
 import { toast } from "sonner"
 import { NotificationBell } from "./notifications/NotificationBell"
-import { clearSessionTokens, getAccessToken, getRefreshToken } from "../lib/session"
+import { clearSessionTokens, getAccessToken, getRefreshToken, setDemoSessionMeta, setSessionTokens } from "../lib/session"
+import { startDemo } from "../api/demo"
 
 type NavbarProps = {
   onOpenSidebar?: () => void
@@ -22,6 +23,7 @@ export function Navbar({ onOpenSidebar }: NavbarProps) {
 
   const [showLogoutModal, setShowLogoutModal] = useState(false)
   const [isDropdownOpen, setIsDropdownOpen] = useState(false)
+  const [isResettingDemo, setIsResettingDemo] = useState(false)
   const [user, setUser] = useState<any>(null)
 
   const dropdownRef = useRef<HTMLDivElement>(null)
@@ -30,6 +32,13 @@ export function Navbar({ onOpenSidebar }: NavbarProps) {
   const isDarkMode =
     theme === "dark" ||
     (theme === "system" && document.documentElement.classList.contains("dark"))
+  const isDemoUser = Boolean(user?.is_demo)
+  const demoExpiryLabel = user?.demo_expires_at
+    ? new Intl.DateTimeFormat(isFa ? "fa-IR" : "en-US", {
+        dateStyle: "medium",
+        timeStyle: "short",
+      }).format(new Date(user.demo_expires_at))
+    : null
 
   useEffect(() => {
     const handleProfileUpdated = ((e: CustomEvent) => {
@@ -86,6 +95,23 @@ export function Navbar({ onOpenSidebar }: NavbarProps) {
     }
   }
 
+  const handleResetDemo = async () => {
+    if (isResettingDemo) return
+    setIsResettingDemo(true)
+    try {
+      const demo = await startDemo()
+      setSessionTokens(demo.access, demo.refresh)
+      setDemoSessionMeta(demo.expires_at)
+      toast.success(t.demo?.reset || "Fresh demo environment is ready.")
+      window.location.href = "/timesheet"
+    } catch (error) {
+      console.error("Demo reset failed:", error)
+      toast.error(t.demo?.startError || "Could not start the demo environment.")
+    } finally {
+      setIsResettingDemo(false)
+    }
+  }
+
   const toggleTheme = () => {
     setTheme(isDarkMode ? "light" : "dark")
   }
@@ -142,6 +168,12 @@ export function Navbar({ onOpenSidebar }: NavbarProps) {
         {/* Desktop navbar: keep the old controls here */}
         <div className="hidden items-center gap-4 md:flex">
           {user && <WorkspaceSelector />}
+          {isDemoUser && (
+            <div className="inline-flex items-center gap-2 rounded-full border border-cyan-200 bg-cyan-50 px-3 py-2 text-xs font-semibold text-cyan-800 dark:border-cyan-500/20 dark:bg-cyan-500/10 dark:text-cyan-100">
+              <FlaskConical className="h-4 w-4" />
+              <span>{t.demo?.badge || "Demo environment"}</span>
+            </div>
+          )}
 
           {user ? (
             <>
@@ -178,8 +210,24 @@ export function Navbar({ onOpenSidebar }: NavbarProps) {
                           ? `${user.first_name || ""} ${user.last_name || ""}`.trim()
                           : user.email}
                       </p>
+                      {isDemoUser && demoExpiryLabel && (
+                        <p className="mt-1 text-xs text-cyan-700 dark:text-cyan-300">
+                          {(t.demo?.expiresAt || "Expires at")}: {demoExpiryLabel}
+                        </p>
+                      )}
                     </div>
 
+                    {isDemoUser && (
+                      <button
+                        onClick={handleResetDemo}
+                        disabled={isResettingDemo}
+                        className="flex w-full items-center gap-3 px-4 py-2.5 text-sm text-cyan-700 transition-colors hover:bg-cyan-50 disabled:cursor-not-allowed disabled:opacity-70 dark:text-cyan-300 dark:hover:bg-cyan-950/40"
+                      >
+                        <RefreshCcw className="h-4 w-4" />
+                        <span>{isResettingDemo ? t.demo?.starting || "Preparing demo..." : t.demo?.resetAction || "Reset demo"}</span>
+                      </button>
+                    )}
+
                     <button
                       onClick={() => {
                         navigate("/profile")
@@ -286,4 +334,4 @@ export function Navbar({ onOpenSidebar }: NavbarProps) {
       )}
     </>
   )
-}
\ No newline at end of file
+}
diff --git a/src/components/Sidebar.tsx b/src/components/Sidebar.tsx
index 4796b2f..f8ef1d9 100644
--- a/src/components/Sidebar.tsx
+++ b/src/components/Sidebar.tsx
@@ -17,6 +17,8 @@ import {
   Globe,
   LogOut,
   LogIn,
+  FlaskConical,
+  RefreshCcw,
 } from "lucide-react"
 import { toast } from "sonner"
 
@@ -27,7 +29,8 @@ import { WorkspaceSelector } from "./WorkspaceSelector"
 import { SettingsMenu } from "./SettingsMenu"
 import { Button } from "./ui/button"
 import { getUserProfile, logoutUser } from "../api/users"
-import { clearSessionTokens, getAccessToken, getRefreshToken } from "../lib/session"
+import { clearSessionTokens, getAccessToken, getRefreshToken, setDemoSessionMeta, setSessionTokens } from "../lib/session"
+import { startDemo } from "../api/demo"
 
 type SidebarProps = {
   mobileOpen?: boolean
@@ -37,6 +40,7 @@ type SidebarProps = {
 export const Sidebar = ({ mobileOpen = false, onMobileClose }: SidebarProps) => {
   const [isCollapsed, setIsCollapsed] = useState(false)
   const [showLogoutModal, setShowLogoutModal] = useState(false)
+  const [isResettingDemo, setIsResettingDemo] = useState(false)
   const [user, setUser] = useState<any>(null)
 
   const navigate = useNavigate()
@@ -47,6 +51,13 @@ export const Sidebar = ({ mobileOpen = false, onMobileClose }: SidebarProps) =>
 
   const isRtl = lang === "fa"
   const canViewLogs = canWorkspace(activeWorkspace?.my_role, WORKSPACE_LOGS_VIEW)
+  const isDemoUser = Boolean(user?.is_demo)
+  const demoExpiryLabel = user?.demo_expires_at
+    ? new Intl.DateTimeFormat(isRtl ? "fa-IR" : "en-US", {
+        dateStyle: "medium",
+        timeStyle: "short",
+      }).format(new Date(user.demo_expires_at))
+    : null
 
   const ToggleIcon = isRtl
     ? isCollapsed
@@ -101,6 +112,23 @@ export const Sidebar = ({ mobileOpen = false, onMobileClose }: SidebarProps) =>
     }
   }
 
+  const handleResetDemo = async () => {
+    if (isResettingDemo) return
+    setIsResettingDemo(true)
+    try {
+      const demo = await startDemo()
+      setSessionTokens(demo.access, demo.refresh)
+      setDemoSessionMeta(demo.expires_at)
+      toast.success(t.demo?.reset || "Fresh demo environment is ready.")
+      window.location.href = "/timesheet"
+    } catch (error) {
+      console.error("Demo reset failed:", error)
+      toast.error(t.demo?.startError || "Could not start the demo environment.")
+    } finally {
+      setIsResettingDemo(false)
+    }
+  }
+
   const toggleLanguage = () => {
     const newLang = isRtl ? "en" : "fa"
 
@@ -199,6 +227,19 @@ export const Sidebar = ({ mobileOpen = false, onMobileClose }: SidebarProps) =>
         <div className="w-full">
           <WorkspaceSelector className="w-full" />
         </div>
+        {isDemoUser && (
+          <div className="mt-3 rounded-2xl border border-cyan-200 bg-cyan-50 p-3 text-xs font-medium text-cyan-800 dark:border-cyan-500/20 dark:bg-cyan-500/10 dark:text-cyan-100">
+            <div className="flex items-center gap-2 font-semibold">
+              <FlaskConical className="h-4 w-4" />
+              {t.demo?.badge || "Demo environment"}
+            </div>
+            {demoExpiryLabel && (
+              <div className="mt-1 text-cyan-700 dark:text-cyan-300">
+                {(t.demo?.expiresAt || "Expires at")}: {demoExpiryLabel}
+              </div>
+            )}
+          </div>
+        )}
       </div>
     )
   }
@@ -256,6 +297,19 @@ export const Sidebar = ({ mobileOpen = false, onMobileClose }: SidebarProps) =>
           </span>
         </button>
 
+        {isDemoUser && (
+          <button
+            onClick={handleResetDemo}
+            disabled={isResettingDemo}
+            className="flex w-full items-center gap-3 rounded-lg px-4 py-3 text-sm font-medium text-cyan-700 transition-colors hover:bg-cyan-50 disabled:cursor-not-allowed disabled:opacity-70 dark:text-cyan-300 dark:hover:bg-cyan-950/40"
+          >
+            <RefreshCcw size={20} className="shrink-0" />
+            <span className="truncate whitespace-nowrap">
+              {isResettingDemo ? t.demo?.starting || "Preparing demo..." : t.demo?.resetAction || "Reset demo"}
+            </span>
+          </button>
+        )}
+
         <button
           onClick={() => setShowLogoutModal(true)}
           className="flex w-full items-center gap-3 rounded-lg px-4 py-3 text-sm font-medium text-red-600 transition-colors hover:bg-red-50 dark:text-red-500 dark:hover:bg-red-950/50"
@@ -300,6 +354,28 @@ export const Sidebar = ({ mobileOpen = false, onMobileClose }: SidebarProps) =>
         </div>
 
         <nav className="flex-1 space-y-1 overflow-y-auto overflow-x-hidden p-4">
+          {isDemoUser && !isCollapsed && (
+            <div className="mb-3 rounded-2xl border border-cyan-200 bg-cyan-50 p-3 text-xs font-medium text-cyan-800 dark:border-cyan-500/20 dark:bg-cyan-500/10 dark:text-cyan-100">
+              <div className="flex items-center gap-2 font-semibold">
+                <FlaskConical className="h-4 w-4" />
+                {t.demo?.badge || "Demo environment"}
+              </div>
+              {demoExpiryLabel && (
+                <div className="mt-1 text-cyan-700 dark:text-cyan-300">
+                  {(t.demo?.expiresAt || "Expires at")}: {demoExpiryLabel}
+                </div>
+              )}
+              <button
+                type="button"
+                onClick={handleResetDemo}
+                disabled={isResettingDemo}
+                className="mt-2 inline-flex items-center gap-2 rounded-full bg-cyan-600 px-3 py-1.5 text-white transition hover:bg-cyan-700 disabled:cursor-not-allowed disabled:opacity-70 dark:bg-cyan-400 dark:text-slate-950 dark:hover:bg-cyan-300"
+              >
+                <RefreshCcw className="h-3.5 w-3.5" />
+                {isResettingDemo ? t.demo?.starting || "Preparing demo..." : t.demo?.resetAction || "Reset demo"}
+              </button>
+            </div>
+          )}
           {renderNavItems(false)}
         </nav>
       </aside>
@@ -402,4 +478,4 @@ export const Sidebar = ({ mobileOpen = false, onMobileClose }: SidebarProps) =>
       )}
     </>
   )
-}
\ No newline at end of file
+}
diff --git a/src/context/AppContext.tsx b/src/context/AppContext.tsx
index 88805cc..160136c 100644
--- a/src/context/AppContext.tsx
+++ b/src/context/AppContext.tsx
@@ -8,6 +8,8 @@ interface User {
   last_name: string;
   email?: string;
   profile_picture?: string | null;
+  is_demo?: boolean;
+  demo_expires_at?: string | null;
 }
 
 interface AppContextType {