diff --git a/admin.php b/admin.php
index a8df133..54c4c17 100644
--- a/admin.php
+++ b/admin.php
@@ -12,6 +12,7 @@ $successMessage = '';
 // Handle POST request
 if ($_SERVER['REQUEST_METHOD'] === 'POST') {
     $action = $_POST['action'] ?? '';
+    $id = isset($_POST['id']) ? (int)$_POST['id'] : 0;
 
     try {
         if ($action === 'upload_document') {
@@ -29,6 +30,24 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
             library_set_flash('success', 'Category created successfully.');
             header('Location: /admin.php');
             exit;
+        } elseif ($action === 'update_category') {
+            $nameEn = trim($_POST['name_en'] ?? '');
+            $nameAr = trim($_POST['name_ar'] ?? '');
+            if (!$id || !$nameEn || !$nameAr) {
+                throw new RuntimeException('ID, English name, and Arabic name are required.');
+            }
+            library_update_category($id, $nameEn, $nameAr);
+            library_set_flash('success', 'Category updated successfully.');
+            header('Location: /admin.php');
+            exit;
+        } elseif ($action === 'delete_category') {
+            if (!$id) {
+                throw new RuntimeException('Invalid Category ID.');
+            }
+            library_delete_category($id);
+            library_set_flash('success', 'Category deleted successfully.');
+            header('Location: /admin.php');
+            exit;
         } elseif ($action === 'create_subcategory') {
             $catId = (int)($_POST['category_id'] ?? 0);
             $nameEn = trim($_POST['name_en'] ?? '');
@@ -40,6 +59,25 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
             library_set_flash('success', 'Subcategory created successfully.');
             header('Location: /admin.php');
             exit;
+        } elseif ($action === 'update_subcategory') {
+            $catId = (int)($_POST['category_id'] ?? 0);
+            $nameEn = trim($_POST['name_en'] ?? '');
+            $nameAr = trim($_POST['name_ar'] ?? '');
+            if (!$id || !$catId || !$nameEn || !$nameAr) {
+                throw new RuntimeException('ID, Category, English name, and Arabic name are required.');
+            }
+            library_update_subcategory($id, $catId, $nameEn, $nameAr);
+            library_set_flash('success', 'Subcategory updated successfully.');
+            header('Location: /admin.php');
+            exit;
+        } elseif ($action === 'delete_subcategory') {
+            if (!$id) {
+                throw new RuntimeException('Invalid Subcategory ID.');
+            }
+            library_delete_subcategory($id);
+            library_set_flash('success', 'Subcategory deleted successfully.');
+            header('Location: /admin.php');
+            exit;
         }
     } catch (Throwable $exception) {
         $errors[] = $exception->getMessage();
@@ -86,10 +124,10 @@ $flashes = library_get_flashes();
         <hr class="my-4">
         <h6 class="text-uppercase text-muted small">Metadata</h6>
         <div class="d-grid gap-2">
-            <button type="button" class="btn btn-outline-secondary btn-sm text-start" data-bs-toggle="modal" data-bs-target="#categoryModal">
+            <button type="button" class="btn btn-outline-secondary btn-sm text-start" onclick="openCreateCategoryModal()">
                 + New Category
             </button>
-            <button type="button" class="btn btn-outline-secondary btn-sm text-start" data-bs-toggle="modal" data-bs-target="#subcategoryModal">
+            <button type="button" class="btn btn-outline-secondary btn-sm text-start" onclick="openCreateSubcategoryModal()">
                 + New Subcategory
             </button>
         </div>
@@ -109,8 +147,9 @@ $flashes = library_get_flashes();
             <div class="alert alert-danger"><?= h(implode(' ', $errors)) ?></div>
         <?php endif; ?>
 
-        <form method="post" action="/admin.php#catalog-manager" enctype="multipart/form-data" class="panel border p-4 bg-white rounded shadow-sm">
+        <form method="post" action="/admin.php#catalog-manager" enctype="multipart/form-data" class="panel border p-4 bg-white rounded shadow-sm mb-5">
             <input type="hidden" name="action" value="upload_document">
+            <h4 class="mb-3">Upload New Document</h4>
             <div class="row g-3">
                 <div class="col-md-6">
                     <label class="form-label">Title (English)</label>
@@ -132,7 +171,7 @@ $flashes = library_get_flashes();
                                 </option>
                             <?php endforeach; ?>
                         </select>
-                        <button class="btn btn-outline-secondary" type="button" data-bs-toggle="modal" data-bs-target="#categoryModal">+</button>
+                        <button class="btn btn-outline-secondary" type="button" onclick="openCreateCategoryModal()">+</button>
                     </div>
                 </div>
 
@@ -142,7 +181,7 @@ $flashes = library_get_flashes();
                         <select class="form-select" name="subcategory_id" id="docSubcategorySelect">
                             <option value="">Select Category First</option>
                         </select>
-                        <button class="btn btn-outline-secondary" type="button" data-bs-toggle="modal" data-bs-target="#subcategoryModal">+</button>
+                        <button class="btn btn-outline-secondary" type="button" onclick="openCreateSubcategoryModal()">+</button>
                     </div>
                 </div>
 
@@ -175,8 +214,8 @@ $flashes = library_get_flashes();
             <button class="btn btn-primary mt-3" type="submit">Upload manuscript</button>
         </form>
         
-        <h3 class="mt-5 mb-3">Recent Documents</h3>
-        <div class="table-responsive bg-white border rounded">
+        <h3 class="mb-3">Recent Documents</h3>
+        <div class="table-responsive bg-white border rounded mb-5">
             <table class="table mb-0">
                 <thead class="table-light">
                     <tr>
@@ -220,6 +259,88 @@ $flashes = library_get_flashes();
                 </tbody>
             </table>
         </div>
+
+        <div class="row">
+            <div class="col-md-6">
+                <div class="d-flex justify-content-between align-items-center mb-3">
+                    <h3>Categories</h3>
+                    <button class="btn btn-sm btn-outline-primary" onclick="openCreateCategoryModal()">+ Add New</button>
+                </div>
+                <div class="table-responsive bg-white border rounded">
+                    <table class="table mb-0">
+                        <thead class="table-light">
+                            <tr>
+                                <th>Name</th>
+                                <th class="text-end">Actions</th>
+                            </tr>
+                        </thead>
+                        <tbody>
+                            <?php if (empty($categories)): ?>
+                                <tr><td colspan="2" class="text-center py-4 text-muted">No categories.</td></tr>
+                            <?php else: ?>
+                                <?php foreach ($categories as $cat): ?>
+                                    <tr>
+                                        <td>
+                                            <?= h($cat['name_en']) ?><br>
+                                            <small class="text-muted"><?= h($cat['name_ar']) ?></small>
+                                        </td>
+                                        <td class="text-end">
+                                            <button class="btn btn-sm btn-outline-secondary" onclick="openEditCategoryModal(<?= $cat['id'] ?>, '<?= h($cat['name_en']) ?>', '<?= h($cat['name_ar']) ?>')">Edit</button>
+                                            <button class="btn btn-sm btn-outline-danger" onclick="deleteCategory(<?= $cat['id'] ?>)">Delete</button>
+                                        </td>
+                                    </tr>
+                                <?php endforeach; ?>
+                            <?php endif; ?>
+                        </tbody>
+                    </table>
+                </div>
+            </div>
+            <div class="col-md-6">
+                <div class="d-flex justify-content-between align-items-center mb-3">
+                    <h3>Subcategories</h3>
+                    <button class="btn btn-sm btn-outline-primary" onclick="openCreateSubcategoryModal()">+ Add New</button>
+                </div>
+                <div class="table-responsive bg-white border rounded">
+                    <table class="table mb-0">
+                        <thead class="table-light">
+                            <tr>
+                                <th>Name</th>
+                                <th>Parent</th>
+                                <th class="text-end">Actions</th>
+                            </tr>
+                        </thead>
+                        <tbody>
+                            <?php if (empty($allSubcategories)): ?>
+                                <tr><td colspan="3" class="text-center py-4 text-muted">No subcategories.</td></tr>
+                            <?php else: ?>
+                                <?php foreach ($allSubcategories as $sub): 
+                                    $parentName = 'Unknown';
+                                    foreach ($categories as $c) {
+                                        if ($c['id'] == $sub['category_id']) {
+                                            $parentName = $c['name_en'];
+                                            break;
+                                        }
+                                    }
+                                ?>
+                                    <tr>
+                                        <td>
+                                            <?= h($sub['name_en']) ?><br>
+                                            <small class="text-muted"><?= h($sub['name_ar']) ?></small>
+                                        </td>
+                                        <td><small><?= h($parentName) ?></small></td>
+                                        <td class="text-end">
+                                            <button class="btn btn-sm btn-outline-secondary" onclick="openEditSubcategoryModal(<?= $sub['id'] ?>, <?= $sub['category_id'] ?>, '<?= h($sub['name_en']) ?>', '<?= h($sub['name_ar']) ?>')">Edit</button>
+                                            <button class="btn btn-sm btn-outline-danger" onclick="deleteSubcategory(<?= $sub['id'] ?>)">Delete</button>
+                                        </td>
+                                    </tr>
+                                <?php endforeach; ?>
+                            <?php endif; ?>
+                        </tbody>
+                    </table>
+                </div>
+            </div>
+        </div>
+
     </main>
 </div>
 
@@ -227,10 +348,11 @@ $flashes = library_get_flashes();
 <div class="modal fade" id="categoryModal" tabindex="-1" aria-hidden="true">
   <div class="modal-dialog">
     <div class="modal-content">
-      <form method="post" action="/admin.php">
-        <input type="hidden" name="action" value="create_category">
+      <form method="post" action="/admin.php" id="categoryForm">
+        <input type="hidden" name="action" id="cat_action" value="create_category">
+        <input type="hidden" name="id" id="cat_id" value="">
         <div class="modal-header">
-            <h5 class="modal-title">Add New Category</h5>
+            <h5 class="modal-title" id="categoryModalTitle">Add New Category</h5>
             <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
         </div>
         <div class="modal-body">
@@ -266,16 +388,17 @@ $flashes = library_get_flashes();
 <div class="modal fade" id="subcategoryModal" tabindex="-1" aria-hidden="true">
   <div class="modal-dialog">
     <div class="modal-content">
-      <form method="post" action="/admin.php">
-        <input type="hidden" name="action" value="create_subcategory">
+      <form method="post" action="/admin.php" id="subcategoryForm">
+        <input type="hidden" name="action" id="sub_action" value="create_subcategory">
+        <input type="hidden" name="id" id="sub_id" value="">
         <div class="modal-header">
-            <h5 class="modal-title">Add New Subcategory</h5>
+            <h5 class="modal-title" id="subcategoryModalTitle">Add New Subcategory</h5>
             <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
         </div>
         <div class="modal-body">
             <div class="mb-3">
                 <label class="form-label">Parent Category</label>
-                <select class="form-select" name="category_id" required>
+                <select class="form-select" name="category_id" id="sub_category_id" required>
                     <option value="">Select...</option>
                     <?php foreach ($categories as $cat): ?>
                         <option value="<?= $cat['id'] ?>"><?= h($cat['name_en']) ?></option>
@@ -310,6 +433,12 @@ $flashes = library_get_flashes();
   </div>
 </div>
 
+<!-- Delete Confirmation Form (Hidden) -->
+<form method="post" action="/admin.php" id="deleteForm">
+    <input type="hidden" name="action" id="deleteAction" value="">
+    <input type="hidden" name="id" id="deleteId" value="">
+</form>
+
 <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
 <script>
     // Pass PHP data to JS safely
@@ -317,6 +446,9 @@ $flashes = library_get_flashes();
     
     const catSelect = document.getElementById('docCategorySelect');
     const subSelect = document.getElementById('docSubcategorySelect');
+    
+    const categoryModal = new bootstrap.Modal(document.getElementById('categoryModal'));
+    const subcategoryModal = new bootstrap.Modal(document.getElementById('subcategoryModal'));
 
     function updateSubcategories() {
         const selectedCatId = catSelect.value;
@@ -332,10 +464,6 @@ $flashes = library_get_flashes();
         filtered.forEach(sub => {
             const option = document.createElement('option');
             option.value = sub.id;
-            // Use only English name for now in the dropdown as per "One language" request, 
-            // or maybe keep bilingual if it helps selection.
-            // Let's keep it bilingual in the dropdown for clarity as before, 
-            // since the user request was specifically about the modal form UI.
             option.textContent = sub.name_en + ' / ' + sub.name_ar;
             subSelect.appendChild(option);
         });
@@ -346,6 +474,61 @@ $flashes = library_get_flashes();
         updateSubcategories();
     }
 
+    // Modal Helpers
+    function openCreateCategoryModal() {
+        document.getElementById('categoryModalTitle').innerText = 'Add New Category';
+        document.getElementById('cat_action').value = 'create_category';
+        document.getElementById('cat_id').value = '';
+        document.getElementById('cat_name_en').value = '';
+        document.getElementById('cat_name_ar').value = '';
+        categoryModal.show();
+    }
+
+    function openEditCategoryModal(id, nameEn, nameAr) {
+        document.getElementById('categoryModalTitle').innerText = 'Edit Category';
+        document.getElementById('cat_action').value = 'update_category';
+        document.getElementById('cat_id').value = id;
+        document.getElementById('cat_name_en').value = nameEn;
+        document.getElementById('cat_name_ar').value = nameAr;
+        categoryModal.show();
+    }
+
+    function deleteCategory(id) {
+        if (confirm('Are you sure you want to delete this category? All related subcategories will also be deleted.')) {
+            document.getElementById('deleteAction').value = 'delete_category';
+            document.getElementById('deleteId').value = id;
+            document.getElementById('deleteForm').submit();
+        }
+    }
+
+    function openCreateSubcategoryModal() {
+        document.getElementById('subcategoryModalTitle').innerText = 'Add New Subcategory';
+        document.getElementById('sub_action').value = 'create_subcategory';
+        document.getElementById('sub_id').value = '';
+        document.getElementById('sub_category_id').value = '';
+        document.getElementById('sub_name_en').value = '';
+        document.getElementById('sub_name_ar').value = '';
+        subcategoryModal.show();
+    }
+
+    function openEditSubcategoryModal(id, catId, nameEn, nameAr) {
+        document.getElementById('subcategoryModalTitle').innerText = 'Edit Subcategory';
+        document.getElementById('sub_action').value = 'update_subcategory';
+        document.getElementById('sub_id').value = id;
+        document.getElementById('sub_category_id').value = catId;
+        document.getElementById('sub_name_en').value = nameEn;
+        document.getElementById('sub_name_ar').value = nameAr;
+        subcategoryModal.show();
+    }
+
+    function deleteSubcategory(id) {
+        if (confirm('Are you sure you want to delete this subcategory?')) {
+            document.getElementById('deleteAction').value = 'delete_subcategory';
+            document.getElementById('deleteId').value = id;
+            document.getElementById('deleteForm').submit();
+        }
+    }
+
     async function translateText(sourceId, targetId, lang) {
         const source = document.getElementById(sourceId);
         const target = document.getElementById(targetId);
@@ -356,7 +539,6 @@ $flashes = library_get_flashes();
             return;
         }
 
-        // Show loading state
         const originalPlaceholder = target.placeholder;
         target.placeholder = 'Translating...';
         const originalOpacity = target.style.opacity;
diff --git a/api/translate.php b/api/translate.php
index 0588300..ec045cb 100644
--- a/api/translate.php
+++ b/api/translate.php
@@ -22,18 +22,19 @@ if (!$text || !$targetLang) {
     exit;
 }
 
-$prompt = "Translate the following text to {$targetLang}. Provide ONLY the translation, without any additional text, quotes, or explanations.";
-
 $response = LocalAIApi::createResponse([
-    'model' => 'gemini-2.0-flash-001', // Using a fast model if available, or default
     'input' => [
         ['role' => 'system', 'content' => 'You are a helpful translator. Translate the user input accurately. Output only the translated text.'],
-        ['role' => 'user', 'content' => $text],
+        ['role' => 'user', 'content' => "Translate the following text to {$targetLang}: \"{$text}\""],
     ],
+], [
+    'poll_interval' => 2,
+    'poll_timeout' => 30
 ]);
 
 if (empty($response['success'])) {
     http_response_code(500);
+    error_log("AI Translation Failed: " . json_encode($response));
     echo json_encode(['error' => 'AI translation failed', 'details' => $response['error'] ?? 'Unknown error']);
     exit;
 }
@@ -41,6 +42,9 @@ if (empty($response['success'])) {
 $translatedText = LocalAIApi::extractText($response);
 
 // Clean up any accidental quotes if the model adds them despite instructions
-$translatedText = trim($translatedText, " \t\n\r\0\x0B\"'");
+$translatedText = trim($translatedText, " 	
+
+
+'" );
 
 echo json_encode(['translation' => $translatedText]);
diff --git a/includes/library.php b/includes/library.php
index e5add47..f1fbd90 100644
--- a/includes/library.php
+++ b/includes/library.php
@@ -190,6 +190,34 @@ function library_get_subcategory_by_id(int $id): ?array
     return $stmt->fetch() ?: null;
 }
 
+function library_update_category(int $id, string $nameEn, string $nameAr): void
+{
+    library_bootstrap();
+    $stmt = db()->prepare('UPDATE library_categories SET name_en = ?, name_ar = ? WHERE id = ?');
+    $stmt->execute([$nameEn, $nameAr, $id]);
+}
+
+function library_delete_category(int $id): void
+{
+    library_bootstrap();
+    $stmt = db()->prepare('DELETE FROM library_categories WHERE id = ?');
+    $stmt->execute([$id]);
+}
+
+function library_update_subcategory(int $id, int $categoryId, string $nameEn, string $nameAr): void
+{
+    library_bootstrap();
+    $stmt = db()->prepare('UPDATE library_subcategories SET category_id = ?, name_en = ?, name_ar = ? WHERE id = ?');
+    $stmt->execute([$categoryId, $nameEn, $nameAr, $id]);
+}
+
+function library_delete_subcategory(int $id): void
+{
+    library_bootstrap();
+    $stmt = db()->prepare('DELETE FROM library_subcategories WHERE id = ?');
+    $stmt->execute([$id]);
+}
+
 // --- End Category Functions ---
 
 function library_fetch_documents(bool $publicOnly = false, array $filters = []): array
@@ -361,4 +389,4 @@ function library_create_document(array $payload, array $file): int
     ]);
 
     return (int) db()->lastInsertId();
-}
+}
\ No newline at end of file