diff --git a/admin.php b/admin.php
index 4e6132c..da97c28 100644
--- a/admin.php
+++ b/admin.php
@@ -297,6 +297,38 @@ if (isset($_GET['delete_faction'])) {
     exit;
 }
 
+// Handle Levels CRUD
+if ($_SERVER["REQUEST_METHOD"] === "POST" && isset($_POST["action"]) && $_POST["action"] === "upsert_level") {
+    $id = (int)$_POST["id"];
+    $name = $_POST["name"];
+    $slug = $_POST["slug"];
+    $resource_id = (int)$_POST["resource_id"];
+    $required_quantity = (int)$_POST["required_quantity"];
+
+    if ($required_quantity <= 0) {
+        header("Location: admin.php?tab=levels&error=invalid_quantity");
+        exit;
+    }
+
+    if ($id > 0) {
+        $stmt = $db->prepare("UPDATE levels SET name = ?, slug = ?, resource_id = ?, required_quantity = ? WHERE id = ?");
+        $stmt->execute([$name, $slug, $resource_id, $required_quantity, $id]);
+    } else {
+        $stmt = $db->prepare("INSERT INTO levels (name, slug, resource_id, required_quantity) VALUES (?, ?, ?, ?)");
+        $stmt->execute([$name, $slug, $resource_id, $required_quantity]);
+    }
+
+    header("Location: admin.php?tab=levels&success=1");
+    exit;
+}
+
+if (isset($_GET["delete_level"])) {
+    $id = (int)$_GET["delete_level"];
+    $db->prepare("DELETE FROM levels WHERE id = ?")->execute([$id]);
+    header("Location: admin.php?tab=levels&success=1");
+    exit;
+}
+
 // Handle Resource CRUD
 if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['action']) && $_POST['action'] === 'upsert_resource') {
     $id = (int)$_POST['id'];
@@ -437,6 +469,7 @@ $factions_list = [];
 $resources_list = [];
 $lootboxes_list = [];
 $project_logs_list = [];
+$levels_list = [];
 
 if ($tab === 'users') {
     $users_list = $db->query("SELECT id, username, email, role FROM users ORDER BY username ASC")->fetchAll();
@@ -467,6 +500,9 @@ if ($tab === 'users') {
         $f['alliance_ids'] = $stmt->fetchAll(PDO::FETCH_COLUMN);
     }
     unset($f);
+} elseif ($tab === 'levels') {
+    $levels_list = $db->query("SELECT l.*, r.name as resource_name FROM levels l JOIN game_resources r ON l.resource_id = r.id ORDER BY l.required_quantity ASC")->fetchAll();
+    $resources_list = $db->query("SELECT id, name FROM game_resources ORDER BY name ASC")->fetchAll();
 } elseif ($tab === 'resources') {
     $resources_list = $db->query("SELECT * FROM game_resources ORDER BY name ASC")->fetchAll();
 } elseif ($tab === 'project_logs') {
@@ -583,6 +619,9 @@ if ($tab === 'users') {
     </header>
 
     <div class="container">
+<?php if (isset($_GET['error']) && $_GET['error'] === 'invalid_quantity'): ?>
+            <div class="success-msg" style="background: #bf616a; color: #fff;"><i class="fa-solid fa-triangle-exclamation"></i> Erreur : La quantité doit être un nombre strictement positif.</div>
+        <?php endif; ?>
         <?php if (isset($_GET['success'])): ?>
             <div class="success-msg"><i class="fa-solid fa-check-circle"></i> Opération effectuée avec succès.</div>
         <?php endif; ?>
@@ -643,9 +682,70 @@ if ($tab === 'users') {
         <?php elseif ($tab === 'levels'): ?>
             <h3 style="color: #88c0d0;">Gestion des Niveaux</h3>
             <div class="form-card">
-                <p><i class="fa-solid fa-info-circle"></i> À configurer</p>
+                <h4>Ajouter / Modifier un Niveau</h4>
+                <form method="POST" id="levelForm">
+                    <input type="hidden" name="action" value="upsert_level">
+                    <input type="hidden" name="id" id="level_id" value="0">
+                    <div style="display: flex; gap: 20px;">
+                        <div class="form-group" style="flex: 2;">
+                            <label>Nom du niveau (ex : Niveau 1)</label>
+                            <input type="text" name="name" id="level_name" required placeholder="Niveau 1">
+                        </div>
+                        <div class="form-group" style="flex: 1;">
+                            <label>Slug (identifiant technique unique)</label>
+                            <input type="text" name="slug" id="level_slug" required placeholder="niveau_1">
+                        </div>
+                    </div>
+                    <div style="display: flex; gap: 20px;">
+                        <div class="form-group" style="flex: 1;">
+                            <label>Ressource requise</label>
+                            <select name="resource_id" id="level_resource_id" required>
+                                <?php foreach ($resources_list as $res): ?>
+                                    <option value="<?php echo $res['id']; ?>" <?php echo (stripos($res['name'], 'Expérience') !== false || stripos($res['name'], 'Experience') !== false) ? 'selected' : ''; ?>>
+                                        <?php echo htmlspecialchars($res['name']); ?>
+                                    </option>
+                                <?php endforeach; ?>
+                            </select>
+                        </div>
+                        <div class="form-group" style="flex: 1;">
+                            <label>Quantité requise (nombre strictement positif)</label>
+                            <input type="number" name="required_quantity" id="level_required_quantity" required min="1" placeholder="100">
+                        </div>
+                    </div>
+                    <button type="submit" class="btn btn-add">ENREGISTRER LE NIVEAU</button>
+                    <button type="button" class="btn" style="background: #4c566a; color: #fff;" onclick="resetLevelForm()">ANNULER</button>
+                </form>
             </div>
 
+            <table>
+                <thead>
+                    <tr>
+                        <th>Nom</th>
+                        <th>Slug</th>
+                        <th>Ressource requise</th>
+                        <th>Quantité requise</th>
+                        <th>Actions</th>
+                    </tr>
+                </thead>
+                <tbody>
+                    <?php if (empty($levels_list)): ?>
+                        <tr><td colspan="5" style="text-align: center; color: #8c92a3;">Aucun niveau configuré.</td></tr>
+                    <?php else: ?>
+                        <?php foreach ($levels_list as $lvl): ?>
+                            <tr>
+                                <td><strong><?php echo htmlspecialchars($lvl['name']); ?></strong></td>
+                                <td><code><?php echo htmlspecialchars($lvl['slug']); ?></code></td>
+                                <td><?php echo htmlspecialchars($lvl['resource_name']); ?></td>
+                                <td><?php echo number_format($lvl['required_quantity'], 0, ',', ' '); ?></td>
+                                <td>
+                                    <button class="btn btn-edit" onclick='editLevel(<?php echo json_encode($lvl, JSON_HEX_APOS); ?>)'>Editer</button>
+                                    <a href="?tab=levels&delete_level=<?php echo $lvl['id']; ?>" class="btn btn-del" onclick="return confirm('Supprimer ce niveau ?')">Suppr</a>
+                                </td>
+                            </tr>
+                        <?php endforeach; ?>
+                    <?php endif; ?>
+                </tbody>
+            </table>
         <?php elseif ($tab === 'ranks'): ?>
             <h3 style="color: #88c0d0;">Gestion des Grades</h3>
             <div class="form-card">
@@ -1402,6 +1502,26 @@ if ($tab === 'users') {
                 document.querySelectorAll('.ms-dropdown').forEach(d => d.style.display = 'none');
             }
         });
+
+        function editLevel(data) {
+            document.getElementById("level_id").value = data.id;
+            document.getElementById("level_name").value = data.name;
+            document.getElementById("level_slug").value = data.slug;
+            document.getElementById("level_resource_id").value = data.resource_id;
+            document.getElementById("level_required_quantity").value = data.required_quantity;
+            window.scrollTo(0,0);
+        }
+        function resetLevelForm() {
+            document.getElementById("levelForm").reset();
+            document.getElementById("level_id").value = 0;
+            const select = document.getElementById("level_resource_id");
+            for (let i = 0; i < select.options.length; i++) {
+                if (select.options[i].text.toLowerCase().includes("expérience") || select.options[i].text.toLowerCase().includes("experience")) {
+                    select.selectedIndex = i;
+                    break;
+                }
+            }
+        }
         </script>
 
         <?php elseif ($tab === 'lootboxes'): ?>
@@ -1802,6 +1922,26 @@ function editStatus(data) {
                 document.querySelectorAll('.ms-dropdown').forEach(d => d.style.display = 'none');
             }
         });
+
+        function editLevel(data) {
+            document.getElementById("level_id").value = data.id;
+            document.getElementById("level_name").value = data.name;
+            document.getElementById("level_slug").value = data.slug;
+            document.getElementById("level_resource_id").value = data.resource_id;
+            document.getElementById("level_required_quantity").value = data.required_quantity;
+            window.scrollTo(0,0);
+        }
+        function resetLevelForm() {
+            document.getElementById("levelForm").reset();
+            document.getElementById("level_id").value = 0;
+            const select = document.getElementById("level_resource_id");
+            for (let i = 0; i < select.options.length; i++) {
+                if (select.options[i].text.toLowerCase().includes("expérience") || select.options[i].text.toLowerCase().includes("experience")) {
+                    select.selectedIndex = i;
+                    break;
+                }
+            }
+        }
         </script>
 </body>
 </html>
\ No newline at end of file