/* ========================================================================
 * 站点统计 modal —— 顶栏图标按钮触发，全屏遮罩 + 卡片网格
 * 内部图表用 ECharts（懒加载 CDN）
 * ====================================================================== */

/* 顶栏触发按钮样式见 theme-light.css 里的 .header-actions / .header-action */

/* ── Modal 容器 ──────────────────────────────────────────────── */
.stats-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.stats-modal[hidden] { display: none; }

.stats-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.62);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  animation: stats-fade .18s ease both;
}

.stats-modal-dialog {
  position: relative;
  width: 100%;
  max-width: 1080px;
  max-height: calc(100vh - 48px);
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.45), 0 6px 16px rgba(0, 0, 0, 0.2);
  overflow: hidden;
  animation: stats-pop .22s cubic-bezier(.2,.8,.3,1) both;
}

@keyframes stats-fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes stats-pop {
  from { opacity: 0; transform: translateY(12px) scale(.98); }
  to   { opacity: 1; transform: translateY(0)    scale(1); }
}

/* ── 头部 ─────────────────────────────────────────────────── */
.stats-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 22px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.stats-modal-header h2 {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--heading);
  display: flex;
  align-items: center;
  gap: 8px;
}
.stats-modal-header h2::before {
  content: '';
  width: 4px;
  height: 16px;
  background: var(--blue);
  border-radius: 2px;
}

.stats-modal-close {
  width: 32px;
  height: 32px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-soft);
  color: var(--muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: color .15s ease, border-color .15s ease, background .15s ease;
}
.stats-modal-close:hover {
  color: var(--red);
  border-color: var(--red);
  background: rgba(239, 68, 68, 0.08);
}

/* ── 卡片网格 ────────────────────────────────────────────── */
.stats-modal-body {
  padding: 18px;
  overflow-y: auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.stats-card {
  background: var(--card-2);
  border: 1px solid var(--border-soft);
  border-radius: 12px;
  padding: 14px 16px 12px;
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.stats-card--full { grid-column: 1 / -1; }

.stats-card h3 {
  margin: 0 0 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 6px;
}
.stats-card h3::before {
  content: '';
  width: 3px;
  height: 12px;
  background: var(--blue);
  border-radius: 2px;
  display: inline-block;
}

.stats-chart {
  width: 100%;
  height: 260px;
}
.stats-card--full .stats-chart { height: 200px; }

.stats-empty {
  padding: 30px;
  text-align: center;
  color: var(--muted-2);
  font-size: 13px;
}

/* ── 浅色主题覆盖 ─────────────────────────────────────────── */
html[data-theme="light"] .stats-modal-backdrop {
  background: rgba(15, 23, 42, 0.42);
}
html[data-theme="light"] .stats-modal-dialog {
  box-shadow: 0 32px 80px rgba(15, 23, 42, 0.18), 0 4px 14px rgba(15, 23, 42, 0.08);
}
html[data-theme="light"] .stats-modal-close:hover {
  background: rgba(239, 68, 68, 0.06);
}

/* ── 移动端 ───────────────────────────────────────────────── */
@media (max-width: 768px) {
  .stats-modal { padding: 12px; }
  .stats-modal-body { grid-template-columns: 1fr; padding: 12px; gap: 10px; }
  .stats-chart { height: 220px; }
  .stats-card--full .stats-chart { height: 180px; }
}