diff --git a/server/auth.ts b/server/auth.ts
index 647724d..b5774b7 100644
--- a/server/auth.ts
+++ b/server/auth.ts
@@ -3,9 +3,9 @@ import path from 'path'
 import bcrypt from 'bcrypt'
 import jwt from 'jsonwebtoken'
 import type { Request, Response, NextFunction } from 'express'
+import { JWT_SECRET } from './secret.js'
 
 const DATA_PATH = path.join(process.cwd(), 'data', 'auth.json')
-const JWT_SECRET = process.env.JWT_SECRET || 'fankarr-secret-change-me'
 const SALT_ROUNDS = 10
 
 interface AuthData {
@@ -63,7 +63,7 @@ export function authSetup(req: Request, res: Response): void {
     const passwordHash = bcrypt.hashSync(password, SALT_ROUNDS)
     writeAuth({ username, passwordHash })
 
-    const token = jwt.sign({ username }, JWT_SECRET, { expiresIn: '30d' })
+    const token = jwt.sign({ username }, JWT_SECRET, { expiresIn: '1d' })
     res.cookie('fankarr_token', token, { httpOnly: true, sameSite: 'lax' })
     res.json({ success: true })
 }
@@ -87,7 +87,7 @@ export function authLogin(req: Request, res: Response): void {
         return
     }
 
-    const token = jwt.sign({ username }, JWT_SECRET, { expiresIn: '30d' })
+    const token = jwt.sign({ username }, JWT_SECRET, { expiresIn: '1d' })
     res.cookie('fankarr_token', token, { httpOnly: true, sameSite: 'lax' })
     res.json({ success: true })
 }
diff --git a/server/secret.ts b/server/secret.ts
new file mode 100644
index 0000000..80544b7
--- /dev/null
+++ b/server/secret.ts
@@ -0,0 +1,44 @@
+/**
+ * secret.ts
+ * =========
+ * Génère et persiste le JWT secret dans data/secret.key
+ * Si JWT_SECRET est défini en variable d'environnement, il est utilisé tel quel.
+ * Sinon, on lit data/secret.key — s'il n'existe pas, on en génère un et on le sauvegarde.
+ */
+
+import fs       from 'fs'
+import path     from 'path'
+import crypto   from 'crypto'
+
+const SECRET_PATH = path.join(process.cwd(), 'data', 'secret.key')
+
+function generateSecret(): string {
+    return crypto.randomBytes(48).toString('hex')
+}
+
+function loadOrCreateSecret(): string {
+    // 1. Variable d'environnement — priorité absolue
+    if (process.env.JWT_SECRET && process.env.JWT_SECRET !== 'fankarr-secret-change-me') {
+        return process.env.JWT_SECRET
+    }
+
+    // 2. Fichier existant
+    if (fs.existsSync(SECRET_PATH)) {
+        const secret = fs.readFileSync(SECRET_PATH, 'utf-8').trim()
+        if (secret.length > 0) return secret
+    }
+
+    // 3. Génération + sauvegarde
+    const secret = generateSecret()
+    try {
+        fs.mkdirSync(path.dirname(SECRET_PATH), { recursive: true })
+        fs.writeFileSync(SECRET_PATH, secret, { encoding: 'utf-8', mode: 0o600 })
+        console.log('[auth] JWT secret généré et sauvegardé dans data/secret.key')
+    } catch (err) {
+        console.error('[auth] Impossible de sauvegarder le secret:', err)
+    }
+
+    return secret
+}
+
+export const JWT_SECRET: string = loadOrCreateSecret()
\ No newline at end of file
diff --git a/src/views/SerieView.vue b/src/views/SerieView.vue
index 3850149..0e20ac5 100644
--- a/src/views/SerieView.vue
+++ b/src/views/SerieView.vue
@@ -273,7 +273,7 @@ async function download(key: string, torrent_url: string | null, magnet: string
   downloading.value = key
   const result = await store.download(torrent_url, magnet)
   downloading.value = null
-  if (result.success) showToast('success', 'Ajouté à qBittorrent !')
+  if (result.success) showToast('success', 'Téléchargement lancé')
   else showToast('error', result.error ?? 'Erreur inconnue')
 }