diff --git a/admin.php b/admin.php
index dcf5199..a565cfc 100644
--- a/admin.php
+++ b/admin.php
@@ -15,6 +15,51 @@ render_flash($flash);
 ?>
 <section class="py-4 py-lg-5">
   <div class="container-xxl">
+
+    <div class="row g-4 align-items-start">
+      <div class="col-lg-3">
+        <aside class="admin-sidebar sticky-top" style="top: 2rem; z-index: 10;">
+          <div class="sidebar-nav">
+            <div class="sidebar-label">الإدارة المركزية</div>
+            <a href="admin.php" class="sidebar-link active">
+              <svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" fill="currentColor" viewBox="0 0 16 16"><path d="M6 1H1v14h5V1zm9 0h-5v5h5V1zm0 9h-5v5h5v-5z"/><path d="M0 1a1 1 0 0 1 1-1h5a1 1 0 0 1 1 1v14a1 1 0 0 1-1 1H1a1 1 0 0 1-1-1V1zm9 0a1 1 0 0 1 1-1h5a1 1 0 0 1 1-1v5a1 1 0 0 1-1 1h-5a1 1 0 0 1-1-1V1zm0 9a1 1 0 0 1 1-1h5a1 1 0 0 1 1 1v5a1 1 0 0 1-1 1h-5a1 1 0 0 1-1-1v-5z"/></svg>
+              لوحة الإدارة
+            </a>
+            <a href="dashboard.php" class="sidebar-link">
+              <svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" fill="currentColor" viewBox="0 0 16 16"><path d="M8 4a.5.5 0 0 1 .5.5V6a.5.5 0 0 1-1 0V4.5A.5.5 0 0 1 8 4zM3.732 5.732a.5.5 0 0 1 .707 0l.915.914a.5.5 0 1 1-.708.708l-.914-.915a.5.5 0 0 1 0-.707zM2 10a.5.5 0 0 1 .5-.5h1.586a.5.5 0 0 1 0 1H2.5A.5.5 0 0 1 2 10zm9.5 0a.5.5 0 0 1 .5-.5h1.5a.5.5 0 0 1 0 1H12a.5.5 0 0 1-.5-.5zm.754-4.246a.389.389 0 0 0-.527-.02L7.547 9.31a.91.91 0 1 0 1.302 1.258l3.434-4.297a.389.389 0 0 0-.029-.518z"/><path fill-rule="evenodd" d="M0 10a8 8 0 1 1 15.547 2.661c-.442 1.253-1.845 1.602-2.932 1.25C11.309 13.488 9.475 13 8 13c-1.474 0-3.31.488-4.615.911-1.087.352-2.49.003-2.932-1.25A7.988 7.988 0 0 1 0 10zm8-7a7 7 0 0 0-6.603 9.329c.203.575.923.876 1.68.63C4.397 12.533 6.358 12 8 12s3.604.532 4.923.96c.757.245 1.477-.056 1.68-.631A7 7 0 0 0 8 3z"/></svg>
+              لوحة القيادة
+            </a>
+            <a href="applications.php" class="sidebar-link">
+              <svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" fill="currentColor" viewBox="0 0 16 16"><path d="M4.98 4a.5.5 0 0 0-.39.188L1.54 8H6a.5.5 0 0 1 .5.5 1.5 1.5 0 1 0 3 0A.5.5 0 0 1 10 8h4.46l-3.05-3.812A.5.5 0 0 0 11.02 4H4.98zm-1.17-.437A1.5 1.5 0 0 1 4.98 3h6.04a1.5 1.5 0 0 1 1.17.563l3.7 4.625a.5.5 0 0 1 .106.304l-.228 6.2a1.5 1.5 0 0 1-1.5 1.464H1.74a1.5 1.5 0 0 1-1.498-1.464l-.228-6.2a.5.5 0 0 1 .106-.304l3.7-4.625zM1 8.5v6a.5.5 0 0 0 .5.5h13a.5.5 0 0 0 .5-.5v-6h-3.415a2.5 2.5 0 0 1-4.17 0H1z"/></svg>
+              لوحة الطلبات
+            </a>
+            <a href="applications.php?status=approved" class="sidebar-link">
+              <svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" fill="currentColor" viewBox="0 0 16 16"><path fill-rule="evenodd" d="M14.763.075A.5.5 0 0 1 15 .5v15a.5.5 0 0 1-.5.5h-3a.5.5 0 0 1-.5-.5V14h-1v1.5a.5.5 0 0 1-.5.5h-9a.5.5 0 0 1-.5-.5V10a.5.5 0 0 1 .342-.474L6 7.64V4.5a.5.5 0 0 1 .276-.447l8-4a.5.5 0 0 1 .487.022zM6 8.694 1 10.36V15h5V8.694zM7 15h2v-1.5a.5.5 0 0 1 .5-.5h2a.5.5 0 0 1 .5.5V15h2V1.309l-7 3.5V15z"/><path d="M2 11h1v1H2v-1zm2 0h1v1H4v-1zm-2 2h1v1H2v-1zm2 0h1v1H4v-1zm4-4h1v1H8V9zm2 0h1v1h-1V9zm-2 2h1v1H8v-1zm2 0h1v1h-1v-1zm2-2h1v1h-1V9zm0 2h1v1h-1v-1zM8 7h1v1H8V7zm2 0h1v1h-1V7zm2 0h1v1h-1V7zM8 5h1v1H8V5zm2 0h1v1h-1V5zm2 0h1v1h-1V5zm0-2h1v1h-1V3z"/></svg>
+              المراكز المعتمدة
+            </a>
+            <a href="center_application.php" class="sidebar-link">
+              <svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" fill="currentColor" viewBox="0 0 16 16"><path d="M8 6.5a.5.5 0 0 1 .5.5v1.5H10a.5.5 0 0 1 0 1H8.5V11a.5.5 0 0 1-1 0V9.5H6a.5.5 0 0 1 0-1h1.5V7a.5.5 0 0 1 .5-.5z"/><path d="M14 4.5V14a2 2 0 0 1-2 2H4a2 2 0 0 1-2-2V2a2 2 0 0 1 2-2h5.5L14 4.5zm-3 0A1.5 1.5 0 0 1 9.5 3V1H4a1 1 0 0 0-1 1v12a1 1 0 0 0 1 1h8a1 1 0 0 0 1-1V4.5h-2z"/></svg>
+              طلب فتح مركز
+            </a>
+            
+            <div class="sidebar-label mt-3">هيكلية النظام</div>
+            <a href="modules.php" class="sidebar-link">
+              <svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" fill="currentColor" viewBox="0 0 16 16"><path fill-rule="evenodd" d="M15.817.113A.5.5 0 0 1 16 .5v14a.5.5 0 0 1-.402.49l-5 1a.502.502 0 0 1-.196 0L5.5 15.01l-4.902.98A.5.5 0 0 1 0 15.5v-14a.5.5 0 0 1 .402-.49l5-1a.5.5 0 0 1 .196 0L10.5.99l4.902-.98a.5.5 0 0 1 .415.103zM10 1.91l-4-.8v12.98l4 .8V1.91zm1 12.98 4-.8V1.11l-4 .8v12.98zm-6-.8V1.11l-4 .8v12.98l4-.8z"/></svg>
+              خريطة الصفحات
+            </a>
+
+            <?php if (isset($recentApproved)): ?>
+            <div class="sidebar-label mt-3">أحدث مركز معتمد</div>
+            <a href="approved_school.php?id=<?= e((string) $recentApproved["id"]) ?>" class="sidebar-link">
+              <svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" fill="currentColor" viewBox="0 0 16 16"><path d="M4 16s-1 0-1-1 1-4 5-4 5 3 5 4-1 1-1 1H4Zm4-5.95a2.5 2.5 0 1 0 0-5 2.5 2.5 0 0 0 0 5Z"/><path d="M2 1a2 2 0 0 0-2 2v9.5A1.5 1.5 0 0 0 1.5 14h.653a5.373 5.373 0 0 1 1.066-2H1V3a1 1 0 0 1 1-1h12a1 1 0 0 1 1 1v9h-2.219c.554.654.89 1.373 1.066 2h.653a1.5 1.5 0 0 0 1.5-1.5V3a2 2 0 0 0-2-2H2Z"/></svg>
+              <?= e((string) $recentApproved["center_name"]) ?>
+            </a>
+            <?php endif; ?>
+          </div>
+        </aside>
+      </div>
+      <div class="col-lg-9">
+
     <div class="page-banner mb-4 mb-lg-5">
       <div class="row g-4 align-items-start">
         <div class="col-lg-8">
@@ -183,6 +228,10 @@ render_flash($flash);
         </div>
       </div>
     </div>
+  
+      </div>
+    </div>
+
   </div>
 </section>
 <?php render_page_end(); ?>
diff --git a/assets/css/custom.css b/assets/css/custom.css
index dd3fafc..b45d7c6 100644
--- a/assets/css/custom.css
+++ b/assets/css/custom.css
@@ -907,3 +907,44 @@ textarea.form-control {
     margin-top: 0.2rem;
     color: var(--muted);
 }
+
+
+/* Admin Sidebar */
+.admin-sidebar {
+    background: var(--surface);
+    border: 1px solid var(--border);
+    border-radius: var(--radius-lg);
+    box-shadow: var(--shadow);
+    padding: 1.25rem;
+}
+.sidebar-nav {
+    display: flex;
+    flex-direction: column;
+    gap: 0.35rem;
+}
+.sidebar-link {
+    display: flex;
+    align-items: center;
+    gap: 0.85rem;
+    padding: 0.65rem 1rem;
+    border-radius: var(--radius-md);
+    color: var(--muted);
+    text-decoration: none;
+    font-weight: 500;
+    transition: all 0.2s ease;
+}
+.sidebar-link svg {
+    flex-shrink: 0;
+}
+.sidebar-link:hover, .sidebar-link.active {
+    background: #eef2f7;
+    color: var(--primary);
+}
+.sidebar-label {
+    font-size: 0.75rem;
+    text-transform: uppercase;
+    letter-spacing: 0.05em;
+    margin-top: 1rem;
+    margin-bottom: 0.5rem;
+    padding: 0 1rem;
+}