submanager/lib/utils/platform_helper.dart

import 'package:flutter/foundation.dart';

class PlatformHelper {
  static bool get isWeb => kIsWeb;
  
  static bool get isIOS {
    if (kIsWeb) return false;
    return defaultTargetPlatform == TargetPlatform.iOS;
  }
  
  static bool get isAndroid {
    if (kIsWeb) return false;
    return defaultTargetPlatform == TargetPlatform.android;
  }
  
  static bool get isMobile => isIOS || isAndroid;
  
  static bool get isDesktop {
    if (kIsWeb) return false;
    return defaultTargetPlatform == TargetPlatform.linux ||
           defaultTargetPlatform == TargetPlatform.macOS ||
           defaultTargetPlatform == TargetPlatform.windows;
  }
}