diff --git a/app/src/main/java/com/fekracomputers/islamiclibrary/settings/AboutActivity.java b/app/src/main/java/com/fekracomputers/islamiclibrary/settings/AboutActivity.java
index e9f9b84..7e84686 100644
--- a/app/src/main/java/com/fekracomputers/islamiclibrary/settings/AboutActivity.java
+++ b/app/src/main/java/com/fekracomputers/islamiclibrary/settings/AboutActivity.java
@@ -6,7 +6,9 @@
 import com.fekracomputers.islamiclibrary.R;
 import com.fekracomputers.islamiclibrary.appliation.IslamicLibraryApplication;
 import com.fekracomputers.islamiclibrary.utility.Util;
-
+import androidx.appcompat.widget.SwitchCompat;
+import androidx.appcompat.app.AppCompatDelegate;
+import android.content.SharedPreferences;
 
 public class AboutActivity extends AppCompatActivity {
 
@@ -17,6 +19,7 @@ protected void onCreate(Bundle savedInstanceState) {
         ((IslamicLibraryApplication) getApplication()).refreshLocale(this, false);
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_about);
+        setupDarkModeToggle();
         setSupportActionBar(findViewById(R.id.toolbar));
 
         if (getSupportActionBar() != null) {
@@ -38,5 +41,27 @@ protected void onResume() {
     }
 
 
+// إضافة زر الوضع المظلم
+private void setupDarkModeToggle() {
+    SwitchCompat darkModeSwitch = findViewById(R.id.dark_mode_switch);
+    
+    // تحميل الإعدادات الحالية
+    SharedPreferences prefs = getSharedPreferences("SETTINGS", MODE_PRIVATE);
+    boolean isDarkMode = prefs.getBoolean("DARK_MODE", false);
+    darkModeSwitch.setChecked(isDarkMode);
 
-}
\ No newline at end of file
+    // عند تغيير وضع الزر
+    darkModeSwitch.setOnCheckedChangeListener((buttonView, isChecked) -> {
+        SharedPreferences.Editor editor = prefs.edit();
+        editor.putBoolean("DARK_MODE", isChecked);
+        editor.apply();
+        
+        if (isChecked) {
+            AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);
+        } else {
+            AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO);
+        }
+        recreate(); // إعادة تحميل النشاط
+    });
+}
+}