/// 应用程序全局常量配置

// 动画时长配置
class AnimationDuration {
  static const Duration fast = Duration(milliseconds: 200);
  static const Duration normal = Duration(milliseconds: 300);
  static const Duration slow = Duration(milliseconds: 500);
}

// 间距配置
class Spacing {
  static const double xs = 4.0;
  static const double sm = 8.0;
  static const double md = 16.0;
  static const double lg = 24.0;
  static const double xl = 32.0;
}

// 圆角配置
class Radius {
  static const double sm = 4.0;
  static const double md = 8.0;
  static const double lg = 12.0;
}