/* HotBoard 前端样式 —— 浅色主题，中国红强调，响应式 */
* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --color-primary: #e63946;
  --color-primary-light: #fcebec;
  --color-primary-dark: #b82a36;
  --color-bg: #f5f6f8;
  --color-surface: #ffffff;
  --color-surface-2: #f9fafb;
  --color-border: #e8eaed;
  --color-border-strong: #d0d4d9;
  --color-text: #1a1a1a;
  --color-text-2: #555;
  --color-text-3: #888;
  --color-success: #16a34a;
  --color-success-light: #e8f7ee;
  --color-warning: #d97706;
  --color-warning-light: #fef3e6;
  --color-info: #2563eb;
  --color-info-light: #e8f1fe;
  --color-purple: #7c3aed;
  --color-purple-light: #f1eafe;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.10);
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Helvetica, Arial, sans-serif;
}

html, body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

button { font-family: inherit; cursor: pointer; border: none; background: none; }
select, input { font-family: inherit; font-size: 14px; }

#app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== 顶栏 ===== */
.topbar {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}
.topbar-left { display: flex; align-items: center; gap: 12px; }
.logo { font-size: 26px; }
.brand { font-size: 18px; font-weight: 600; line-height: 1.2; }
.brand-sub { font-size: 12px; color: var(--color-text-3); }
.topbar-right { display: flex; align-items: center; gap: 10px; }
.countdown {
  font-size: 12px; color: var(--color-text-3);
  padding: 4px 10px; background: var(--color-surface-2);
  border-radius: 12px; border: 1px solid var(--color-border);
  min-width: 70px; text-align: center;
}
.btn-refresh {
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--color-primary); color: #fff;
  font-size: 18px; display: flex; align-items: center; justify-content: center;
  transition: transform 0.2s;
}
.btn-refresh:hover { transform: rotate(90deg); background: var(--color-primary-dark); }
.btn-refresh.spinning { animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== Tab 导航 ===== */
.tabs {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  padding: 0 16px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  position: sticky;
  top: 61px;
  z-index: 99;
}
.tab {
  padding: 12px 18px;
  font-size: 14px;
  color: var(--color-text-2);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition: all 0.15s;
}
.tab:hover { color: var(--color-primary); }
.tab.active { color: var(--color-primary); border-bottom-color: var(--color-primary); font-weight: 500; }

/* ===== 主内容 ===== */
.content { flex: 1; padding: 16px; max-width: 1280px; width: 100%; margin: 0 auto; }
.panel { display: none; }
.panel.active { display: block; }

.panel-toolbar {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-bottom: 14px; align-items: center;
}
.select, .input {
  height: 34px; padding: 0 10px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  outline: none;
}
.select:focus, .input:focus { border-color: var(--color-primary); }
.input { min-width: 200px; }
.btn-primary {
  height: 34px; padding: 0 16px;
  background: var(--color-primary); color: #fff;
  border-radius: var(--radius-sm); font-weight: 500;
}
.btn-primary:hover { background: var(--color-primary-dark); }

.cat-filter { display: flex; gap: 6px; flex-wrap: wrap; }
.cat-chip {
  padding: 5px 12px; font-size: 12px;
  border-radius: 14px; background: var(--color-surface-2);
  border: 1px solid var(--color-border); color: var(--color-text-2);
  transition: all 0.15s;
}
.cat-chip.active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

/* ===== 实时热榜 ===== */
.realtime-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 14px;
}
.platform-list {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 6px;
  border: 1px solid var(--color-border);
  height: fit-content;
  position: sticky;
  top: 116px;
  max-height: calc(100vh - 140px);
  overflow-y: auto;
}
.platform-item {
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--color-text-2);
  display: flex; justify-content: space-between; align-items: center;
  cursor: pointer; transition: all 0.12s;
  margin-bottom: 2px;
}
.platform-item:hover { background: var(--color-surface-2); }
.platform-item.active { background: var(--color-primary-light); color: var(--color-primary-dark); font-weight: 500; }
.platform-item .pi-count {
  font-size: 11px; color: var(--color-text-3);
  background: var(--color-surface-2);
  padding: 1px 6px; border-radius: 8px;
}
.platform-item.active .pi-count { background: #fff; color: var(--color-primary); }

.rank-board {
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  padding: 8px 0;
  min-height: 400px;
}
.rank-header {
  padding: 8px 16px 12px;
  border-bottom: 1px solid var(--color-border);
  display: flex; justify-content: space-between; align-items: center;
}
.rank-header h2 { font-size: 16px; font-weight: 600; }
.rank-header .rh-meta { font-size: 12px; color: var(--color-text-3); }

.rank-row {
  display: grid;
  grid-template-columns: 36px 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 9px 16px;
  border-bottom: 1px solid var(--color-surface-2);
  transition: background 0.12s;
}
.rank-row:hover { background: var(--color-surface-2); }
.rank-row:last-child { border-bottom: none; }
.rank-num {
  width: 26px; height: 26px;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 600;
  border-radius: 6px;
  background: var(--color-surface-2);
  color: var(--color-text-2);
}
.rank-num.top1 { background: var(--color-primary); color: #fff; }
.rank-num.top2 { background: #ff7a45; color: #fff; }
.rank-num.top3 { background: #ffa940; color: #fff; }
.rank-info { min-width: 0; }
.rank-title {
  font-size: 14px; color: var(--color-text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  font-weight: 500;
}
.rank-title a { color: inherit; text-decoration: none; }
.rank-title a:hover { color: var(--color-primary); }
.rank-digest {
  font-size: 12px; color: var(--color-text-3);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  margin-top: 2px;
}
.rank-hot {
  font-size: 12px; color: var(--color-primary);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  font-weight: 500;
}

.placeholder {
  text-align: center; padding: 80px 20px;
  color: var(--color-text-3); font-size: 14px;
}

/* ===== 重点变动 ===== */
.changes-list { display: flex; flex-direction: column; gap: 8px; }
.change-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-info);
  border-radius: var(--radius);
  padding: 12px 16px;
  display: flex; gap: 12px; align-items: flex-start;
  transition: box-shadow 0.15s;
}
.change-card:hover { box-shadow: var(--shadow); }
.change-card.type-new_top { border-left-color: var(--color-success); }
.change-card.type-rank_up { border-left-color: var(--color-success); }
.change-card.type-rank_down { border-left-color: var(--color-warning); }
.change-card.type-off_list { border-left-color: var(--color-text-3); }
.change-card.type-cross_platform { border-left-color: var(--color-purple); }

.change-icon {
  width: 32px; height: 32px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 600;
  flex-shrink: 0;
}
.type-new_top .change-icon { background: var(--color-success-light); color: var(--color-success); }
.type-rank_up .change-icon { background: var(--color-success-light); color: var(--color-success); }
.type-rank_down .change-icon { background: var(--color-warning-light); color: var(--color-warning); }
.type-off_list .change-icon { background: var(--color-surface-2); color: var(--color-text-3); }
.type-cross_platform .change-icon { background: var(--color-purple-light); color: var(--color-purple); }

.change-body { flex: 1; min-width: 0; }
.change-title {
  font-size: 14px; font-weight: 500; color: var(--color-text);
  margin-bottom: 3px;
}
.change-detail { font-size: 12px; color: var(--color-text-2); }
.change-meta {
  font-size: 11px; color: var(--color-text-3);
  margin-top: 4px;
  display: flex; gap: 10px; flex-wrap: wrap;
}
.change-tag {
  display: inline-block;
  font-size: 11px; padding: 1px 7px;
  border-radius: 10px;
  background: var(--color-surface-2);
  color: var(--color-text-2);
  border: 1px solid var(--color-border);
}

/* ===== 跨平台热点 ===== */
.cross-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
}
.cross-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 14px 16px;
  transition: all 0.15s;
  cursor: default;
}
.cross-card:hover { box-shadow: var(--shadow); border-color: var(--color-border-strong); }
.cross-title {
  font-size: 14px; font-weight: 500;
  margin-bottom: 8px; line-height: 1.4;
  max-height: 40px; overflow: hidden;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
}
.cross-keyword {
  font-size: 12px; font-weight: 400;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 1px 6px; border-radius: 8px;
  margin-left: 4px;
}
.cross-meta {
  display: flex; gap: 12px; font-size: 11px; color: var(--color-text-3);
  margin-bottom: 8px;
}
.cross-meta b { color: var(--color-primary); font-weight: 600; }
.cross-platforms { display: flex; flex-wrap: wrap; gap: 4px; }
.platform-chip {
  font-size: 11px; padding: 2px 8px;
  border-radius: 10px;
  background: var(--color-primary-light); color: var(--color-primary-dark);
}

/* ===== 历史趋势 ===== */
.trend-area {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px;
  height: 480px;
  position: relative;
}

/* ===== 系统统计 ===== */
.stats-overview {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}
.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.stat-label { font-size: 12px; color: var(--color-text-3); margin-bottom: 6px; }
.stat-value { font-size: 22px; font-weight: 600; color: var(--color-text); font-variant-numeric: tabular-nums; }
.stat-value .unit { font-size: 13px; color: var(--color-text-3); font-weight: 400; margin-left: 4px; }

.section-title {
  font-size: 14px; font-weight: 500;
  margin: 20px 0 10px;
  color: var(--color-text);
}
.stats-table-wrap {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}
.stats-table {
  width: 100%; border-collapse: collapse;
  font-size: 13px;
}
.stats-table th, .stats-table td {
  padding: 10px 14px; text-align: left;
  border-bottom: 1px solid var(--color-border);
}
.stats-table th {
  background: var(--color-surface-2);
  font-weight: 500; color: var(--color-text-2);
  font-size: 12px;
}
.stats-table tr:last-child td { border-bottom: none; }
.stats-table tr:hover td { background: var(--color-surface-2); }
.success-rate {
  display: inline-block;
  padding: 2px 8px; border-radius: 10px;
  font-size: 11px; font-weight: 500;
}
.sr-ok { background: var(--color-success-light); color: var(--color-success); }
.sr-warn { background: var(--color-warning-light); color: var(--color-warning); }
.sr-bad { background: var(--color-primary-light); color: var(--color-primary); }
.status-dot {
  display: inline-block; width: 8px; height: 8px;
  border-radius: 50%; background: var(--color-success);
}
.status-dot.warn { background: var(--color-warning); }
.status-dot.bad { background: var(--color-primary); }

/* ===== RSS / 推送设置 ===== */
.link-btn {
  background: none; border: none; color: var(--color-info);
  font-size: 12px; padding: 2px 6px; cursor: pointer;
  text-decoration: underline;
}
.link-btn:hover { opacity: 0.7; }
.rss-hint {
  font-size: 12px; color: var(--color-text-3);
  flex: 1; min-width: 0;
}
.rss-items { display: flex; flex-direction: column; gap: 8px; }
.rss-item-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 10px 14px;
  border-left: 3px solid var(--color-info);
}
.rss-item-card .ri-title {
  font-size: 14px; font-weight: 500; margin-bottom: 3px;
}
.rss-item-card .ri-title a { color: var(--color-text); text-decoration: none; }
.rss-item-card .ri-title a:hover { color: var(--color-primary); }
.rss-item-card .ri-summary {
  font-size: 12px; color: var(--color-text-2);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden; margin-bottom: 4px;
}
.rss-item-card .ri-meta { font-size: 11px; color: var(--color-text-3); }

.push-global {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 14px 16px;
  display: flex; flex-direction: column; gap: 12px;
  margin-bottom: 16px;
}
.switch-row {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--color-text);
}
.switch-row input[type="checkbox"] {
  width: 16px; height: 16px; accent-color: var(--color-primary);
}

.push-channels {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}
.channel-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.channel-card.enabled { border-color: var(--color-success); background: var(--color-success-light); }
.channel-card .ch-head {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 10px;
}
.channel-card .ch-name { font-size: 14px; font-weight: 600; }
.channel-card .ch-status {
  font-size: 11px; padding: 2px 8px; border-radius: 10px;
  background: var(--color-surface-2); color: var(--color-text-3);
}
.channel-card.enabled .ch-status { background: var(--color-success); color: #fff; }
.channel-card .ch-row { margin-bottom: 8px; }
.channel-card .ch-row label {
  display: block; font-size: 11px; color: var(--color-text-3); margin-bottom: 3px;
}
.channel-card .ch-row input {
  width: 100%; height: 30px; padding: 0 8px;
  border: 1px solid var(--color-border-strong); border-radius: var(--radius-sm);
  font-size: 12px;
}

/* ===== Footer ===== */
.footer {
  padding: 14px 20px;
  text-align: center;
  font-size: 12px;
  color: var(--color-text-3);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 6px;
}

/* ===== 加载状态 ===== */
.loading {
  text-align: center; padding: 40px;
  color: var(--color-text-3); font-size: 13px;
}
.loading::before {
  content: ""; display: inline-block;
  width: 14px; height: 14px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin-right: 8px; vertical-align: middle;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .topbar { padding: 10px 12px; }
  .brand { font-size: 16px; }
  .brand-sub { display: none; }
  .content { padding: 10px; }
  .tab { padding: 10px 12px; font-size: 13px; }

  .realtime-layout { grid-template-columns: 1fr; }
  .platform-list {
    position: static; max-height: none;
    display: flex; overflow-x: auto;
    padding: 6px; gap: 6px;
  }
  .platform-item {
    white-space: nowrap; flex-shrink: 0;
    margin-bottom: 0; padding: 7px 12px;
  }
  .platform-item .pi-count { display: none; }

  .rank-row { grid-template-columns: 28px 1fr auto; gap: 8px; padding: 10px 12px; }
  .rank-num { width: 22px; height: 22px; font-size: 11px; }
  .rank-title { font-size: 13px; }
  .rank-digest { display: none; }

  .input { min-width: 140px; flex: 1; }
  .select { flex: 1; }
  .panel-toolbar { gap: 6px; }
  .panel-toolbar > * { flex: 1; min-width: 0; }
  .cat-filter { width: 100%; overflow-x: auto; flex-wrap: nowrap; }
  .cat-chip { flex-shrink: 0; }

  .trend-area { height: 360px; padding: 10px; }

  .stats-table th, .stats-table td { padding: 8px 10px; font-size: 12px; }

  .footer { flex-direction: column; }
}

@media (max-width: 480px) {
  .stats-table { display: block; }
  .stats-table thead { display: none; }
  .stats-table tbody, .stats-table tr, .stats-table td { display: block; width: 100%; }
  .stats-table tr {
    border-bottom: 1px solid var(--color-border);
    padding: 8px 0;
  }
  .stats-table td { border: none; padding: 2px 14px; }
  .stats-table td::before {
    content: attr(data-label) "：";
    color: var(--color-text-3); font-size: 11px;
    margin-right: 6px;
  }
}