/* 提木 — 全局样式 */
/* 日系户外风 × 蓝天白云 */

:root {
  --primary: #6CB4E4;
  --primary-light: #E8F2FA;
  --bg: #F5F9FC;
  --card: #FFFFFF;
  --text: #3A404A;
  --text-secondary: #6B7380;
  --text-subtle: #B0B4B8;
  --divider: #E8EDF2;
  --success: #7BA598;
  --warning: #D4A858;
  --error: #C47A6B;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* 滚动条 */
html::-webkit-scrollbar,
body::-webkit-scrollbar,
::-webkit-scrollbar { width: 3px; }
html::-webkit-scrollbar-thumb,
body::-webkit-scrollbar-thumb,
::-webkit-scrollbar-thumb { background: #E8EDF2; border-radius: 2px; }
html::-webkit-scrollbar-track,
body::-webkit-scrollbar-track,
::-webkit-scrollbar-track { background: transparent; }

/* 卡片 */
.card {
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: 0 1px 4px rgba(0,0,0,0.04);
  overflow: hidden;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  border-radius: var(--radius-xl);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  outline: none;
}
.btn-primary {
  background: var(--primary);
  color: #FFF;
}
.btn-secondary {
  background: var(--card);
  color: var(--text-secondary);
  border: 1px solid var(--divider);
}

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  background: var(--primary-light);
  color: var(--primary);
}

/* 分割线 */
.divider {
  height: 0.5px;
  background: var(--divider);
  margin: 0 16px;
}

/* 空状态 */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 32px;
  text-align: center;
}
.empty-state .empty-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  color: var(--text-subtle);
  margin-bottom: 16px;
}
.empty-state .empty-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.empty-state .empty-desc {
  font-size: 13px;
  color: var(--text-secondary);
}

/* 底部导航栏 */
.bottom-nav {
  position: fixed; bottom: 0; left: 0; right: 0;
  height: 60px; background: #FFF;
  display: flex; align-items: center; padding: 0 20px;
  justify-content: space-around;
  border-top: 1px solid var(--divider);
  z-index: 9999; box-shadow: 0 -2px 8px rgba(0,0,0,0.06);
}
.nav-item {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  font-size: 10px; color: #B0B4B8; text-decoration: none;
}
.nav-item.active { color: var(--primary); }
.nav-item .nav-icon { font-size: 22px; }

/* 页面头部 */
.page-header {
  display: flex; align-items: center; padding: 16px 16px 12px;
  font-size: 20px; font-weight: 700; color: var(--text);
}

/* 瀑布流 */
.waterfall { display: flex; gap: 10px; padding: 0 16px 20px; }
.waterfall .col { flex: 1; display: flex; flex-direction: column; gap: 10px; }

/* 活动卡片 */
.act-card {
  background: #FFF; border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}
.act-img {
  width: 100%; display: flex; align-items: center; justify-content: center;
  color: #FFF; font-size: 13px;
}
.act-body { padding: 10px 12px 12px; }
.act-title { font-size: 14px; font-weight: 600; color: var(--text); margin-bottom: 4px; }
.act-meta { font-size: 11px; color: var(--text-secondary); margin-bottom: 4px; }

/* 加载骨架屏 */
.skeleton-card {
  background: #FFF; border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}
.skeleton-img {
  width: 100%; background: #E8EDF2;
  animation: shimmer 1.5s ease-in-out infinite;
}
.skeleton-body { padding: 10px 12px 12px; }
.skeleton-line {
  height: 12px; background: #E8EDF2; border-radius: 4px;
  margin-bottom: 8px; animation: shimmer 1.5s ease-in-out infinite;
}
.skeleton-line:last-child { margin-bottom: 0; width: 60%; }
@keyframes shimmer {
  0% { opacity: 0.5; } 50% { opacity: 1; } 100% { opacity: 0.5; }
}

/* 筛选栏（后续使用） */
.filter-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 16px 10px; overflow-x: auto;
}
.filter-bar::-webkit-scrollbar { display: none; }
.filter-dropdown {
  display: inline-flex; align-items: center; gap: 2px;
  padding: 6px 10px; border-radius: 16px;
  font-size: 12px; color: var(--text-secondary); background: #FFF;
  white-space: nowrap; cursor: pointer; user-select: none; flex-shrink: 0;
  border: 0.5px solid var(--divider);
  -webkit-tap-highlight-color: transparent;
}
.filter-dropdown:active { opacity: 0.7; }
.filter-dropdown.active {
  background: var(--primary-light); color: var(--primary);
  border-color: var(--primary); font-weight: 500;
}