/* ===================================================
   美司通热闻雷达 - 全局样式
   =================================================== */

:root {
  --color-bg: #f4f6f9;
  --color-surface: #ffffff;
  --color-border: #e2e8f0;
  --color-primary: #1a56a4;   /* 美司通品牌蓝 */
  --color-primary-light: #e8f0fb;
  --color-text: #1e293b;
  --color-muted: #64748b;
  --color-tag-bg: #f1f5f9;
  --color-rank-hot: #e53e3e;
  --color-rank-warm: #dd6b20;
  --color-rank-normal: #718096;
  --radius: 10px;
  --shadow: 0 1px 4px rgba(0,0,0,0.08);
  --shadow-hover: 0 4px 16px rgba(0,0,0,0.12);
  --header-h: 64px;
}

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

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  line-height: 1.6;
}

/* ─── Header ─── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-primary);
  height: var(--header-h);
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}
.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  height: 100%;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 20px;
}
.logo { display: flex; align-items: baseline; gap: 8px; }
.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 1px;
}
.logo-sub {
  font-size: 13px;
  color: rgba(255,255,255,0.75);
}
.header-controls {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.date-select,
.platform-select,
.search-input {
  height: 34px;
  padding: 0 10px;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 6px;
  background: rgba(255,255,255,0.15);
  color: #fff;
  font-size: 13px;
  outline: none;
  transition: background 0.2s;
}
.date-select:focus,
.platform-select:focus,
.search-input:focus {
  background: rgba(255,255,255,0.25);
}
.date-select option,
.platform-select option {
  background: #1a56a4;
  color: #fff;
}
.search-input::placeholder { color: rgba(255,255,255,0.6); }
.search-input { width: 200px; }

/* ─── Stats bar ─── */
.stats-bar {
  max-width: 1280px;
  margin: 20px auto 0;
  padding: 0 24px;
  color: var(--color-muted);
  font-size: 13px;
}

/* ─── Main grid ─── */
.main-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: 16px 24px 48px;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 14px;
  margin-top: 14px;
}

/* ─── News card ─── */
.news-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  padding: 16px;
  box-shadow: var(--shadow);
  transition: box-shadow 0.2s, transform 0.2s;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.news-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.card-header {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.rank-badge {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  background: var(--color-tag-bg);
  color: var(--color-muted);
}
.rank-badge.hot { background: #fff5f5; color: var(--color-rank-hot); }
.rank-badge.warm { background: #fffaf0; color: var(--color-rank-warm); }

.card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
  flex: 1;
}
.card-title a {
  color: inherit;
  text-decoration: none;
}
.card-title a:hover { color: var(--color-primary); }

.card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.platform-tag {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 500;
}
.crawl-time {
  font-size: 11px;
  color: var(--color-muted);
}
.crawl-count {
  font-size: 11px;
  color: var(--color-muted);
}

/* ─── Loading / empty ─── */
.loading, .empty-msg {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 0;
  color: var(--color-muted);
  font-size: 15px;
}

/* ─── Footer ─── */
.site-footer {
  text-align: center;
  padding: 20px;
  color: var(--color-muted);
  font-size: 12px;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

/* ─── Responsive ─── */
@media (max-width: 640px) {
  .header-inner { padding: 0 12px; gap: 12px; }
  .search-input { width: 140px; }
  .main-content { padding: 12px 12px 40px; }
  .news-grid { grid-template-columns: 1fr; }
}