:root {
  --primary: #667eea;
  --text-1: #1f2937;
  --text-2: #4b5563;
  --text-3: #6b7280;
  --text-4: #9ca3af;
  --bg-1: #ffffff;
  --bg-2: #f9fafb;
  --bg-3: #f3f4f6;
  --border: #e5e7eb;
  --pv: #667eea;
  --uv: #ec4899;
  --ss: #10b981;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg-2);
  color: var(--text-1);
  font-size: 14px;
  line-height: 1.5;
}
.toast {
  position: fixed; top: 20px; left: 50%; transform: translateX(-50%);
  background: rgba(31,41,55,.95); color: #fff; padding: 10px 20px;
  border-radius: 8px; font-size: 13px; z-index: 9999; display: none;
}
.toast.success { background: #10b981; }
.toast.error { background: #ef4444; }
.toast.warning { background: #f59e0b; }

.stat-page { max-width: 1200px; margin: 0 auto; padding: 0 20px 40px; }
.top-bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 0; border-bottom: 1px solid var(--border); margin-bottom: 20px;
  position: sticky; top: 0; background: var(--bg-2); z-index: 10;
}
.top-left { display: flex; align-items: center; gap: 16px; }
.back-link { display: flex; align-items: center; gap: 6px; color: var(--text-3); text-decoration: none; font-size: 13px; }
.back-link:hover { color: var(--primary); }
.page-title { font-size: 20px; font-weight: 600; }
.top-right { display: flex; align-items: center; gap: 12px; }
.admin-name { color: var(--text-2); font-size: 13px; }

.btn {
  border: 1px solid var(--border); background: var(--bg-1); color: var(--text-2);
  padding: 7px 14px; border-radius: 8px; font-size: 13px; cursor: pointer; transition: all .2s;
}
.btn:hover { background: var(--bg-2); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: #5a6fd6; }
.btn-sm { padding: 5px 12px; font-size: 12px; }
.btn-default { background: var(--bg-1); }

.form-input {
  border: 1px solid var(--border); border-radius: 8px; padding: 7px 12px;
  font-size: 13px; background: var(--bg-1); color: var(--text-1); outline: none;
}
.form-input:focus { border-color: var(--primary); }

.filter-bar {
  display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
  background: var(--bg-1); padding: 16px; border-radius: 12px; margin-bottom: 20px;
  border: 1px solid var(--border);
}
.filter-group { display: flex; align-items: center; gap: 8px; }
.filter-group label { font-size: 13px; color: var(--text-3); white-space: nowrap; }
.range-tabs { display: flex; gap: 4px; background: var(--bg-3); border-radius: 8px; padding: 3px; }
.range-tab {
  border: none; background: transparent; padding: 5px 12px; border-radius: 6px;
  font-size: 12px; color: var(--text-3); cursor: pointer; transition: all .2s;
}
.range-tab.active { background: var(--bg-1); color: var(--primary); font-weight: 600; box-shadow: 0 1px 3px rgba(0,0,0,.08); }

.overview-cards {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px; margin-bottom: 20px;
}
.ov-card {
  background: var(--bg-1); border: 1px solid var(--border); border-radius: 12px;
  padding: 16px; transition: box-shadow .2s;
}
.ov-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,.06); }
.ov-label { font-size: 12px; color: var(--text-3); margin-bottom: 8px; }
.ov-value { font-size: 26px; font-weight: 700; color: var(--text-1); }
.ov-sub { font-size: 13px; color: var(--text-2); line-height: 1.7; }

.card {
  background: var(--bg-1); border: 1px solid var(--border); border-radius: 12px;
  margin-bottom: 20px; overflow: hidden;
}
.card-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px; border-bottom: 1px solid var(--border);
}
.card-head h3 { font-size: 15px; font-weight: 600; }
.legend { display: flex; gap: 14px; font-size: 12px; color: var(--text-3); align-items: center; }
.legend .dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 4px; vertical-align: middle; }
.legend .dot.pv { background: var(--pv); }
.legend .dot.uv { background: var(--uv); }
.legend .dot.ss { background: var(--ss); }

.chart-wrap { padding: 16px; overflow-x: auto; }
.chart-wrap svg { display: block; width: 100%; min-width: 600px; height: 280px; }

.two-col { display: grid; grid-template-columns: 1.4fr 1fr; gap: 20px; }
@media (max-width: 900px) { .two-col { grid-template-columns: 1fr; } }

.table-wrap { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.data-table th, .data-table td { padding: 11px 16px; text-align: left; }
.data-table th { color: var(--text-3); font-weight: 500; background: var(--bg-2); border-bottom: 1px solid var(--border); white-space: nowrap; }
.data-table td { border-bottom: 1px solid var(--border); color: var(--text-2); }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--bg-2); }
.page-url-cell { max-width: 360px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--text-3); }
.page-title-cell { color: var(--text-1); }
.empty-row td { text-align: center; color: var(--text-4); padding: 30px; }

.breakdown { padding: 18px; display: flex; flex-direction: column; gap: 20px; }
.bd-group h4 { font-size: 12px; color: var(--text-3); margin-bottom: 10px; font-weight: 500; text-transform: uppercase; letter-spacing: .5px; }
.bd-bars { display: flex; flex-direction: column; gap: 8px; }
.bd-row { display: flex; align-items: center; gap: 10px; font-size: 12px; }
.bd-name { width: 80px; color: var(--text-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.bd-track { flex: 1; height: 8px; background: var(--bg-3); border-radius: 4px; overflow: hidden; }
.bd-fill { height: 100%; background: var(--primary); border-radius: 4px; transition: width .4s; }
.bd-val { width: 40px; text-align: right; color: var(--text-3); }

.status-tag { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 11px; }
.status-on { background: #d1fae5; color: #059669; }
.status-off { background: #fee2e2; color: #dc2626; }