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

:root {
  --color-bg: #f4f6f9;
  --color-surface: #ffffff;
  --color-border: #e2e8f0;
  --color-primary: #1a56a4;
  --color-primary-light: #e8f0fb;
  --color-text: #1e293b;
  --color-muted: #64748b;
  --color-tag-bg: #f1f5f9;
  --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: 16px;
}
.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, .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, .search-input:focus { background: rgba(255,255,255,0.25); }
.date-select option { background: #1a56a4; color: #fff; }
.search-input::placeholder { color: rgba(255,255,255,0.6); }
.search-input { width: 180px; }
.header-link {
  font-size: 13px; color: rgba(255,255,255,.8);
  text-decoration: none; white-space: nowrap;
}
.header-link:hover { color: #fff; }

/* ─── Tag Navigation ─── */
.tag-nav {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky; top: var(--header-h); z-index: 90;
}
.tag-nav-inner {
  max-width: 1280px; margin: 0 auto;
  padding: 10px 24px;
  display: flex; gap: 8px; flex-wrap: wrap; align-items: center;
}
.tag-tab {
  padding: 6px 14px; border-radius: 20px;
  border: 1px solid var(--color-border);
  background: var(--color-surface); color: var(--color-muted);
  font-size: 13px; font-weight: 500;
  cursor: pointer; transition: all 0.15s;
  text-decoration: none; display: inline-flex; align-items: center; gap: 5px;
}
.tag-tab:hover { background: var(--color-tag-bg); color: var(--color-text); }
.tag-tab.active {
  background: var(--color-primary); color: #fff;
  border-color: var(--color-primary);
}
.tag-tab-report {
  background: #fef3cd; color: #856404;
  border-color: #ffc107;
}
.tag-tab-report:hover { background: #ffc107; color: #533f03; }
.tab-count {
  font-size: 11px; background: rgba(0,0,0,0.08); border-radius: 10px;
  padding: 1px 6px; min-width: 18px; text-align: center;
}
.tag-tab.active .tab-count { background: rgba(255,255,255,0.25); }

/* ─── Stats bar ─── */
.stats-bar {
  max-width: 1280px; margin: 16px auto 0;
  padding: 0 24px; color: var(--color-muted); font-size: 13px;
}

/* ─── Main grid ─── */
.main-content {
  max-width: 1280px; margin: 0 auto; padding: 8px 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; }
.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-summary {
  font-size: 13px; color: var(--color-muted); line-height: 1.5;
}

.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); }

/* ─── AI Tag & Score ─── */
.ai-tag {
  font-size: 11px; padding: 2px 7px; border-radius: 4px;
  background: #fef3cd; color: #856404; font-weight: 500;
}
.ai-score {
  font-size: 11px; padding: 2px 6px; border-radius: 4px; font-weight: 600;
}
.score-high { background: #e6f4ea; color: #276749; }
.score-mid  { background: #fef3cd; color: #856404; }
.score-low  { background: #f1f5f9; color: #718096; }

/* ─── 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: 8px 12px 40px; }
  .news-grid { grid-template-columns: 1fr; }
  .tag-nav-inner { padding: 8px 12px; }
}