dark Theme and 18 other changes done

lib/features/profile/security_settings_screen.dart

@@ -40,7 +40,7 @@ class SecuritySettingsScreen extends StatelessWidget {
                   );
                 },
               ),
-              const Divider(height: 1),
+              Divider(height: 1, color: Theme.of(context).dividerColor),
               ListTile(
                 leading: const Icon(Icons.pin),
                 title: Text(loc.changeMpin),
@@ -57,13 +57,13 @@ class SecuritySettingsScreen extends StatelessWidget {
                     ScaffoldMessenger.of(context).showSnackBar(
                       SnackBar(
                         content: Text(loc.mpinChangedSuccessfully),
-                        backgroundColor: Colors.green,
+                        backgroundColor: Theme.of(context).colorScheme.secondary,
                       ),
                     );
                   }
                 },
               ),
-              const Divider(height: 1),
+              Divider(height: 1, color: Theme.of(context).dividerColor),
               ListTile(
                 leading: const Icon(Icons.password),
                 title: const Text('Change TPIN'),