diff --git a/src/auth/AuthContext.jsx b/src/auth/AuthContext.jsx
index 86c8c49..a8a5836 100644
--- a/src/auth/AuthContext.jsx
+++ b/src/auth/AuthContext.jsx
@@ -7,12 +7,15 @@ import React, {
 
 const AuthContext = createContext(null);
 
-// Config Keycloak pour le login inline
+/* ===== Keycloak config ===== */
 const KC_BASE = "https://web.sociowire.com:8443";
 const KC_REALM = "sociowire";
 const KC_CLIENT_ID = "sociowire-frontend";
 
+/* ===== Storage keys ===== */
 const TOKEN_KEY = "sociowire:access_token";
+const REFRESH_KEY = "sociowire:refresh_token";
+const EXPIRES_AT_KEY = "sociowire:expires_at";
 const USERNAME_KEY = "sociowire:username";
 
 export function AuthProvider({ children }) {
@@ -22,38 +25,126 @@ export function AuthProvider({ children }) {
   const [token, setToken] = useState(null);
   const [lastError, setLastError] = useState("");
 
-  // Charge token/username depuis localStorage au démarrage
-  useEffect(() => {
+  /* ==============================
+     REFRESH TOKEN (helper)
+     ============================== */
+  async function refreshWithToken(refreshToken) {
+    const params = new URLSearchParams();
+    params.set("grant_type", "refresh_token");
+    params.set("client_id", KC_CLIENT_ID);
+    params.set("refresh_token", refreshToken);
+
     try {
-      const storedToken = localStorage.getItem(TOKEN_KEY);
-      const storedUser = localStorage.getItem(USERNAME_KEY) || "";
-      if (storedToken) {
-        setToken(storedToken);
-        setUsername(storedUser);
-        setAuthenticated(true);
-      } else {
-        setAuthenticated(false);
+      const res = await fetch(
+        `${KC_BASE}/realms/${KC_REALM}/protocol/openid-connect/token`,
+        {
+          method: "POST",
+          headers: { "Content-Type": "application/x-www-form-urlencoded" },
+          body: params.toString(),
+        }
+      );
+
+      if (!res.ok) {
+        console.error("[AUTH] refresh failed", res.status);
+        logout();
+        return false;
       }
+
+      const data = await res.json();
+      const accessToken = data.access_token;
+      const newRefresh = data.refresh_token || refreshToken;
+      const expiresIn = Number(data.expires_in || 0);
+
+      if (!accessToken) {
+        logout();
+        return false;
+      }
+
+      setToken(accessToken);
+      setAuthenticated(true);
+
+      localStorage.setItem(TOKEN_KEY, accessToken);
+      localStorage.setItem(REFRESH_KEY, newRefresh);
+      localStorage.setItem(
+        EXPIRES_AT_KEY,
+        String(Date.now() + expiresIn * 1000)
+      );
+
+      return true;
     } catch (e) {
-      console.warn("[AUTH] localStorage error", e);
-    } finally {
-      setLoading(false);
+      console.error("[AUTH] refresh error", e);
+      return false;
     }
+  }
+
+  /* ==============================
+     INIT AUTH (APP LOAD)
+     ============================== */
+  useEffect(() => {
+    (async () => {
+      try {
+        const storedToken = localStorage.getItem(TOKEN_KEY);
+        const storedRefresh = localStorage.getItem(REFRESH_KEY);
+        const storedUser = localStorage.getItem(USERNAME_KEY) || "";
+        const expiresAt = Number(localStorage.getItem(EXPIRES_AT_KEY) || "0");
+
+        const now = Date.now();
+        const needsRefresh = !storedToken || now > expiresAt - 60_000;
+
+        if (storedRefresh && needsRefresh) {
+          const ok = await refreshWithToken(storedRefresh);
+          if (ok) {
+            setUsername(storedUser);
+            return;
+          }
+        }
+
+        if (storedToken) {
+          setToken(storedToken);
+          setUsername(storedUser);
+          setAuthenticated(true);
+        }
+      } catch (e) {
+        console.warn("[AUTH] init error", e);
+      } finally {
+        setLoading(false);
+      }
+    })();
   }, []);
 
-  // Login via password grant sur Keycloak
+  /* ==============================
+     BACKGROUND REFRESH
+     ============================== */
+  useEffect(() => {
+    if (!authenticated) return;
+
+    const t = setInterval(async () => {
+      try {
+        const refresh = localStorage.getItem(REFRESH_KEY);
+        const expiresAt = Number(localStorage.getItem(EXPIRES_AT_KEY) || "0");
+
+        if (!refresh) return;
+        if (Date.now() > expiresAt - 60_000) {
+          await refreshWithToken(refresh);
+        }
+      } catch {
+        /* ignore */
+      }
+    }, 30_000);
+
+    return () => clearInterval(t);
+  }, [authenticated]);
+
+  /* ==============================
+     LOGIN
+     ============================== */
   async function login(user, pass) {
     setLastError("");
-    const u = (user || "").trim();
-    if (!u || !pass) {
-      setLastError("Username and password required.");
-      return;
-    }
 
     const params = new URLSearchParams();
     params.set("grant_type", "password");
     params.set("client_id", KC_CLIENT_ID);
-    params.set("username", u);
+    params.set("username", user);
     params.set("password", pass);
 
     try {
@@ -61,89 +152,56 @@ export function AuthProvider({ children }) {
         `${KC_BASE}/realms/${KC_REALM}/protocol/openid-connect/token`,
         {
           method: "POST",
-          headers: {
-            "Content-Type": "application/x-www-form-urlencoded",
-          },
+          headers: { "Content-Type": "application/x-www-form-urlencoded" },
           body: params.toString(),
         }
       );
 
       if (!res.ok) {
-        const text = await res.text();
-        console.error("[AUTH] login failed", res.status, text);
-
-        let msg = "Invalid credentials or auth error.";
-        try {
-          const j = JSON.parse(text);
-          if (j.error_description) {
-            msg = j.error_description;
-          } else if (j.error) {
-            msg = j.error;
-          }
-        } catch (e) {
-          // ignore parse error
-        }
-
-        setLastError(`${res.status} ${msg}`);
-        setAuthenticated(false);
-        setToken(null);
-        setUsername("");
-        try {
-          localStorage.removeItem(TOKEN_KEY);
-          localStorage.removeItem(USERNAME_KEY);
-        } catch (e) {
-          // ignore
-        }
+        setLastError("Invalid credentials");
         return;
       }
 
       const data = await res.json();
       const accessToken = data.access_token;
-      if (!accessToken) {
-        setLastError("No access token in response.");
-        setAuthenticated(false);
-        setToken(null);
-        setUsername("");
+      const refreshToken = data.refresh_token;
+      const expiresIn = Number(data.expires_in || 0);
+
+      if (!accessToken || !refreshToken) {
+        setLastError("Invalid token response");
         return;
       }
 
       setToken(accessToken);
       setAuthenticated(true);
-      setUsername(u);
-      setLastError("");
+      setUsername(user);
 
-      try {
-        localStorage.setItem(TOKEN_KEY, accessToken);
-        localStorage.setItem(USERNAME_KEY, u);
-      } catch (e) {
-        console.warn("[AUTH] failed to persist token", e);
-      }
+      localStorage.setItem(TOKEN_KEY, accessToken);
+      localStorage.setItem(REFRESH_KEY, refreshToken);
+      localStorage.setItem(
+        EXPIRES_AT_KEY,
+        String(Date.now() + expiresIn * 1000)
+      );
+      localStorage.setItem(USERNAME_KEY, user);
     } catch (e) {
-      console.error("[AUTH] network error", e);
-      setLastError("Network error during login.");
-      setAuthenticated(false);
-      setToken(null);
-      setUsername("");
-      try {
-        localStorage.removeItem(TOKEN_KEY);
-        localStorage.removeItem(USERNAME_KEY);
-      } catch (e2) {
-        // ignore
-      }
+      console.error("[AUTH] login error", e);
+      setLastError("Network error");
     }
   }
 
+  /* ==============================
+     LOGOUT
+     ============================== */
   function logout() {
     setAuthenticated(false);
     setToken(null);
     setUsername("");
     setLastError("");
-    try {
-      localStorage.removeItem(TOKEN_KEY);
-      localStorage.removeItem(USERNAME_KEY);
-    } catch (e) {
-      // ignore
-    }
+
+    localStorage.removeItem(TOKEN_KEY);
+    localStorage.removeItem(REFRESH_KEY);
+    localStorage.removeItem(EXPIRES_AT_KEY);
+    localStorage.removeItem(USERNAME_KEY);
   }
 
   return (
@@ -165,8 +223,6 @@ export function AuthProvider({ children }) {
 
 export function useAuth() {
   const ctx = useContext(AuthContext);
-  if (!ctx) {
-    throw new Error("useAuth must be used inside <AuthProvider>");
-  }
+  if (!ctx) throw new Error("useAuth must be used inside AuthProvider");
   return ctx;
-}
+}
\ No newline at end of file