/* ============================================
   全网热搜排行榜 - 仪表盘样式
   ============================================ */

:root {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: #1e293b;
  --bg-hover: #334155;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border: #334155;
  --accent: #f59e0b;
  --accent2: #3b82f6;
  --accent3: #10b981;
  --danger: #ef4444;
  --rank-1: #f59e0b;
  --rank-2: #94a3b8;
  --rank-3: #d97706;
  --demand-high: #10b981;
  --demand-mid: #f59e0b;
  --demand-low: #64748b;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --radius: 12px;
}

/* 浅色主题 */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-hover: #f1f5f9;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --border: #e2e8f0;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.08);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  transition: background 0.3s, color 0.3s;
}

/* ===== Header ===== */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 32px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}
.header-left { display: flex; align-items: center; gap: 16px; }
.logo { font-size: 1.5rem; font-weight: 800; letter-spacing: -0.5px; }
.header-right { display: flex; align-items: center; gap: 12px; }

.update-badge {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.8rem; color: var(--accent3);
  background: rgba(16, 185, 129, 0.1); padding: 4px 12px;
  border-radius: 20px; font-weight: 500;
}
.update-badge.error { color: var(--danger); background: rgba(239,68,68,0.1); }
.pulse {
  width: 8px; height: 8px; background: var(--accent3);
  border-radius: 50%; animation: pulse 1.5s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.75); }
}

.date-display {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.9rem; color: var(--text-secondary);
  background: var(--bg-primary); padding: 6px 14px;
  border-radius: 8px; border: 1px solid var(--border);
}

.btn-refresh, .btn-theme {
  padding: 8px 16px; border: 1px solid var(--border);
  border-radius: 8px; cursor: pointer; font-size: 0.85rem;
  background: var(--bg-card); color: var(--text-primary);
  transition: all 0.2s;
}
.btn-refresh:hover, .btn-theme:hover { background: var(--bg-hover); transform: translateY(-1px); }
.btn-refresh:active { transform: scale(0.97); }

/* ===== Main ===== */
.main-container { max-width: 1440px; margin: 0 auto; padding: 24px 32px; }

/* ===== Stats ===== */
.stats-row {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 16px; margin-bottom: 24px;
}
.stat-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px; display: flex;
  align-items: center; gap: 16px; box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}
.stat-card:hover { transform: translateY(-2px); box-shadow: 0 8px 16px rgba(0,0,0,0.2); }
.stat-icon { font-size: 2rem; }
.stat-info { display: flex; flex-direction: column; }
.stat-value { font-size: 1.6rem; font-weight: 700; }
.stat-label { font-size: 0.8rem; color: var(--text-secondary); }

/* ===== Content Grid ===== */
.content-grid {
  display: grid; grid-template-columns: 1fr 400px;
  gap: 24px; align-items: start;
}

/* ===== Panels ===== */
.panel {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
  overflow: hidden;
}
.panel-header {
  padding: 18px 20px; border-bottom: 1px solid var(--border);
  display: flex; justify-content: space-between;
  align-items: center; flex-wrap: wrap; gap: 12px;
}
.panel-header h2 { font-size: 1.15rem; font-weight: 700; }
.panel-controls { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

.filter-select, .search-input {
  padding: 7px 12px; border: 1px solid var(--border);
  border-radius: 8px; background: var(--bg-primary);
  color: var(--text-primary); font-size: 0.85rem;
  outline: none; transition: border 0.2s;
}
.filter-select:focus, .search-input:focus { border-color: var(--accent2); }
.search-input { width: 180px; }
.search-input::placeholder { color: var(--text-muted); }

.chart-panel { padding: 18px 20px; }
.chart-panel h3 { font-size: 0.95rem; margin-bottom: 14px; color: var(--text-secondary); }
.chart-wrap { position: relative; width: 100%; }
.chart-wrap canvas { max-height: 220px; }

/* ===== Table ===== */
.table-container { overflow-x: auto; }
.ranking-table {
  width: 100%; border-collapse: collapse; font-size: 0.9rem;
}
.ranking-table thead {
  position: sticky; top: 0; z-index: 10;
}
.ranking-table th {
  background: var(--bg-primary); padding: 12px 16px;
  text-align: left; font-weight: 600; color: var(--text-secondary);
  border-bottom: 2px solid var(--border); white-space: nowrap;
}
.ranking-table td {
  padding: 10px 16px; border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.ranking-table tbody tr { transition: background 0.15s; }
.ranking-table tbody tr:hover { background: var(--bg-hover); }

.col-rank { width: 50px; text-align: center; }
.col-keyword { min-width: 160px; }
.col-demand { width: 90px; text-align: right; }
.col-platforms { width: 80px; text-align: center; }
.col-platforms-detail { min-width: 120px; }
.col-category { width: 70px; text-align: center; }

.rank-badge {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: 8px;
  font-weight: 700; font-size: 0.8rem;
}
.rank-1 .rank-badge { background: rgba(245,158,11,0.15); color: var(--rank-1); }
.rank-2 .rank-badge { background: rgba(148,163,184,0.15); color: var(--rank-2); }
.rank-3 .rank-badge { background: rgba(217,119,6,0.15); color: var(--rank-3); }

.keyword-link {
  color: var(--text-primary); text-decoration: none;
  font-weight: 500; transition: color 0.2s;
  max-width: 200px; overflow: hidden; text-overflow: ellipsis; display: inline-block;
}
.keyword-link:hover { color: var(--accent2); }

.demand-bar-wrap {
  display: flex; align-items: center; gap: 8px;
}
.demand-bar {
  width: 60px; height: 6px; border-radius: 3px;
  background: var(--border); overflow: hidden;
}
.demand-bar-fill {
  height: 100%; border-radius: 3px; transition: width 0.3s;
}
.demand-high .demand-bar-fill { background: var(--demand-high); }
.demand-mid .demand-bar-fill { background: var(--demand-mid); }
.demand-low .demand-bar-fill { background: var(--demand-low); }

.demand-score { font-weight: 600; font-variant-numeric: tabular-nums; }

.platform-count {
  display: inline-block; padding: 3px 10px;
  border-radius: 12px; font-size: 0.8rem; font-weight: 600;
  background: rgba(59,130,246,0.1); color: var(--accent2);
}

.platform-tags { display: flex; gap: 4px; flex-wrap: wrap; }
.platform-tag {
  font-size: 0.7rem; padding: 2px 7px; border-radius: 6px;
  background: var(--bg-primary); color: var(--text-secondary);
  white-space: nowrap;
}
.platform-tag.baidu { border-left: 3px solid #ef4444; }
.platform-tag.weibo { border-left: 3px solid #f59e0b; }
.platform-tag.douyin { border-left: 3px solid #ec4899; }
.platform-tag.zhihu { border-left: 3px solid #3b82f6; }
.platform-tag.toutiao { border-left: 3px solid #ef4444; }
.platform-tag.google { border-left: 3px solid #10b981; }

.category-badge {
  font-size: 0.7rem; padding: 2px 8px; border-radius: 6px;
  background: rgba(100,116,139,0.15); color: var(--text-secondary);
}

.loading-cell {
  text-align: center; padding: 40px 20px; color: var(--text-muted);
}
.empty-cell {
  text-align: center; padding: 40px 20px; color: var(--text-muted);
}

/* ===== Platform Top List ===== */
.platform-top-list { display: flex; flex-direction: column; gap: 12px; }
.platform-top-item {
  padding: 10px 12px; border-radius: 8px;
  background: var(--bg-primary); border: 1px solid var(--border);
}
.platform-top-header {
  display: flex; align-items: center; gap: 8px; margin-bottom: 6px;
}
.platform-top-name { font-weight: 700; font-size: 0.85rem; }
.platform-top-keywords { font-size: 0.8rem; color: var(--text-secondary); }
.platform-top-keywords span {
  display: inline-block; margin: 2px 4px;
  padding: 2px 6px; border-radius: 4px; background: rgba(255,255,255,0.05);
}

/* ===== Footer ===== */
.footer {
  display: flex; justify-content: space-between;
  padding: 16px 32px; border-top: 1px solid var(--border);
  font-size: 0.75rem; color: var(--text-muted);
  background: var(--bg-secondary); flex-wrap: wrap; gap: 8px;
}

/* ===== Responsive ===== */
@media (max-width: 1200px) {
  .content-grid { grid-template-columns: 1fr; }
  .charts-column {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px;
  }
}
@media (max-width: 768px) {
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .header { padding: 12px 16px; flex-direction: column; gap: 8px; }
  .main-container { padding: 12px 16px; }
  .panel-header { flex-direction: column; align-items: stretch; }
  .panel-controls { justify-content: flex-start; }
  .search-input { width: 100%; }
  .charts-column { grid-template-columns: 1fr; }
  .col-platforms-detail { display: none; }
  .col-category { display: none; }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ===== Animations ===== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}
.ranking-table tbody tr { animation: fadeIn 0.3s ease; }