/* 全局动画和交互优化 */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* 页面加载动画 */
.page-loading {
  animation: fadeIn 0.3s ease-out;
}

/* 卡片悬停效果 */
.card {
  transition: all 0.3s ease;
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

/* 按钮点击效果 */
.btn {
  transition: all 0.2s ease;
  cursor: pointer;
}
.btn:active {
  transform: scale(0.98);
}
.btn:hover {
  opacity: 0.9;
}

/* 列表项动画 */
.list-item {
  animation: slideIn 0.3s ease-out;
}

/* 加载动画 */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid #f3f3f3;
  border-top: 2px solid #3498db;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

/* 骨架屏 */
.skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

/* 脉冲效果（新消息/通知） */
.pulse {
  animation: pulse 2s infinite;
}

/* 平滑滚动 */
html {
  scroll-behavior: smooth;
}

/* 图片懒加载淡入 */
img.lazy {
  opacity: 0;
  transition: opacity 0.3s ease;
}
img.lazy.loaded {
  opacity: 1;
}

/* 移动端触摸反馈 */
@media (max-width: 768px) {
  .btn:active {
    transform: scale(0.95);
  }
  .card:active {
    transform: scale(0.99);
  }
}

/* 下拉刷新动画 */
.pull-refresh {
  transition: transform 0.3s ease;
}
.pull-refresh.refreshing .refresh-icon {
  animation: spin 1s linear infinite;
}