I’m facing an issue in my Flutter app where the Google font is not applying correctly to the light theme when I switch dynamically between light and dark themes. The font works perfectly with the dark theme, but in the light theme, it reverts to Flutter’s default font.

main.dart

void main() async {
  await dotenv.load(fileName: '.env');
  Get.put(AuthController());
  Get.put(NavigationController());
  Get.put(ThemeProvider());
  runApp(const App());
}

class App extends StatelessWidget {
  const App({super.key});

  @override
  Widget build(BuildContext context) {
    return Obx(
      () {
        final themeProvider = Get.find<ThemeProvider>();
        return GetMaterialApp(
          home: const AuthWrapper(),
          debugShowCheckedModeBanner: false,
          title: 'Ela & Elas',
          theme: ThemeData(
              colorScheme: ColorScheme.fromSeed(
                  seedColor: const Color.fromARGB(255, 255, 160, 247)),
              textTheme:
                  GoogleFonts.montserratTextTheme(ThemeData.light().textTheme)),
          darkTheme: ThemeData.dark().copyWith(
            colorScheme: ColorScheme.fromSeed(
                seedColor: const Color.fromARGB(255, 255, 160, 247)),
            textTheme:
                GoogleFonts.montserratTextTheme(ThemeData.dark().textTheme),
          ),
          themeMode: themeProvider.isDarkTheme.value
              ? ThemeMode.dark
              : ThemeMode.light,
          getPages: AppRoutes.routes,
        );
      },
    );
  }
}

theme.dart

class ThemeProvider extends GetxController {
  var isDarkTheme = false.obs;

  @override
  void onInit() {
    super.onInit();
    _loadThemePreference();
  }

  void changeTheme() async {
    isDarkTheme.value = !isDarkTheme.value;
    Get.changeTheme(isDarkTheme.value ? ThemeData.dark() : ThemeData.light());
    await _saveThemePreference(isDarkTheme.value);
    update();
  }

  Future<void> _saveThemePreference(bool isDarkTheme) async {
    final prefs = await SharedPreferences.getInstance();
    await prefs.setBool('isDarkTheme', isDarkTheme);
  }

  Future<void> _loadThemePreference() async {
    final prefs = await SharedPreferences.getInstance();
    isDarkTheme.value = prefs.getBool('isDarkTheme') ?? false;
    Get.changeTheme(isDarkTheme.value ? ThemeData.dark() : ThemeData.light());
  }
}

Any insights on what might be going wrong or how to fix this would be greatly appreciated!