diff --git a/public/admin/login.php b/public/admin/login.php
index 7dcbe87..2cc19ae 100644
--- a/public/admin/login.php
+++ b/public/admin/login.php
@@ -34,8 +34,10 @@ $pageTitle = 'Connexion';
     <link rel="stylesheet" href="/assets/css/admin.css">
 </head>
 <body class="admin-body">
-    <nav class="admin-nav">
-        <span class="admin-nav__logo">Posterg</span>
+    <nav class="admin-nav" aria-label="Navigation admin">
+        <a href="/" class="admin-nav__logo" target="_blank" rel="noopener noreferrer">
+            <span aria-hidden="true">&#8592; </span>Posterg<span class="sr-only"> (site public, nouvel onglet)</span>
+        </a>
     </nav>
 
     <div class="admin-login-wrap">
diff --git a/public/assets/css/admin.css b/public/assets/css/admin.css
index d66845d..e9dd1f0 100644
--- a/public/assets/css/admin.css
+++ b/public/assets/css/admin.css
@@ -50,12 +50,11 @@ html, body {
 /* Nav link list */
 .admin-nav__list {
   list-style: none;
-  margin: 0;
+  margin: 0 0 0 auto;
   padding: 0;
   display: flex;
   align-items: center;
   gap: 2.5rem;
-  flex: 1;
 }
 
 .admin-nav__list a {
@@ -79,11 +78,7 @@ html, body {
   padding-bottom: 1px;
 }
 
-/* Logout link pushed to the far right */
-.admin-nav__logout {
-  margin-left: auto;
-}
-
+/* Logout link — visually subdued, last in list */
 .admin-nav__logout a {
   opacity: 0.6;
 }
diff --git a/templates/admin/head.php b/templates/admin/head.php
index 37f666a..8d76710 100644
--- a/templates/admin/head.php
+++ b/templates/admin/head.php
@@ -23,7 +23,9 @@
 <body class="admin-body">
     <a href="#main-content" class="skip-link">Aller au contenu principal</a>
     <nav class="admin-nav" aria-label="Navigation admin">
-        <a href="/admin/" class="admin-nav__logo">Posterg</a>
+        <a href="/" class="admin-nav__logo" target="_blank" rel="noopener noreferrer">
+            <span aria-hidden="true">&#8592; </span>Posterg<span class="sr-only"> (site public, nouvel onglet)</span>
+        </a>
         <?php
         $currentPage = basename($_SERVER['PHP_SELF']);
         $thesisId = $_GET['id'] ?? null;
