:root {
  --bg: #0f1419;
  --panel: #1a212b;
  --panel-2: #222c38;
  --text: #e6edf3;
  --muted: #8b98a5;
  --accent: #4f9dff;
  --border: #2a3441;
  --ok: #3fb950;
  --fail: #f85149;
}
[data-theme="light"] {
  --bg: #f5f7fa;
  --panel: #ffffff;
  --panel-2: #eef2f7;
  --text: #1f2933;
  --muted: #6b7785;
  --accent: #2563eb;
  --border: #dce1e8;
  --ok: #1a7f37;
  --fail: #cf222e;
}
* { box-sizing: border-box; }
.events-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.events-filters label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--muted);
}
.events-filters select {
  padding: 6px 8px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  font-size: 14px;
}
.events-filters button {
  background: var(--panel-2);
}
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
}
.hidden { display: none !important; }
.muted { color: var(--muted); }
.error { color: var(--fail); min-height: 1.2em; margin-top: 8px; font-size: 14px; }

/* Login */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.login-card {
  background: var(--panel);
  padding: 32px;
  border-radius: 12px;
  border: 1px solid var(--border);
  width: 320px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.login-card h1 { font-size: 18px; margin: 0 0 4px; }
.login-card input {
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  font-size: 14px;
}

/* Topbar */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
}
.topbar h1 { font-size: 18px; margin: 0; }
.actions { display: flex; gap: 8px; }
button {
  cursor: pointer;
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 14px;
}
#logout-btn { background: var(--fail); }

/* Tabs */
.tabs {
  display: flex;
  gap: 8px;
  padding: 16px 24px 0;
  flex-wrap: wrap;
}
.tab {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
}
.tab.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* KPI */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px;
  padding: 24px;
}
.kpi {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
}
.kpi .label { color: var(--muted); font-size: 13px; }
.kpi .value { font-size: 26px; font-weight: 600; margin-top: 6px; }

/* Charts */
.charts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 16px;
  padding: 0 24px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  margin: 0 0 16px;
}
.card h3 { margin: 0 0 12px; font-size: 15px; }
.chart { width: 100%; height: 280px; }

/* Tables */
.dashboard section.card { margin: 0 24px 24px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 500; }
.pager { display: flex; align-items: center; gap: 12px; margin-top: 12px; }
#page-info { color: var(--muted); font-size: 13px; }