:root {
  --bg: #0f1420;
  --panel: #171e2e;
  --panel-2: #1e2739;
  --line: #2a3448;
  --text: #e6ebf5;
  --muted: #8b97ad;
  --accent: #4f8cff;
  --green: #35c98a;
  --red: #ff6b6b;
  --amber: #f5b544;
  --radius: 12px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}

/* ---------- login ---------- */
.login-body {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh; padding: 20px;
}
.login-card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 32px; width: 320px;
  display: flex; flex-direction: column; gap: 14px;
  box-shadow: 0 20px 60px rgba(0,0,0,.4);
}
.login-card h1 { margin: 0; font-size: 20px; }
.login-sub { margin: 0; color: var(--muted); font-size: 13px; }
.login-card input, .login-card button {
  padding: 12px 14px; border-radius: 8px; border: 1px solid var(--line);
  font-size: 15px;
}
.login-card input { background: var(--panel-2); color: var(--text); }
.login-card button {
  background: var(--accent); color: #fff; border: none; cursor: pointer; font-weight: 600;
}
.login-card button:hover { filter: brightness(1.08); }
.login-error { display: none; color: var(--red); font-size: 13px; margin: 0; text-align: center; }

/* ---------- layout ---------- */
header.topbar {
  display: flex; align-items: center; gap: 20px;
  padding: 14px 24px; background: var(--panel); border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 20;
}
.topbar h1 { font-size: 17px; margin: 0; white-space: nowrap; }
.topbar .spacer { flex: 1; }
.topbar .updated { color: var(--muted); font-size: 12px; }
.topbar a.logout { color: var(--muted); text-decoration: none; font-size: 13px; }
.topbar a.logout:hover { color: var(--text); }

.tabs { display: flex; gap: 4px; padding: 0 24px; background: var(--panel);
        border-bottom: 1px solid var(--line); position: sticky; top: 51px; z-index: 19; }
.tab {
  padding: 12px 18px; cursor: pointer; color: var(--muted);
  border-bottom: 2px solid transparent; font-weight: 500; white-space: nowrap;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--text); border-bottom-color: var(--accent); }

.filters {
  display: flex; gap: 14px; flex-wrap: wrap; align-items: flex-end;
  padding: 16px 24px; background: var(--panel-2); border-bottom: 1px solid var(--line);
}
.filters .field { display: flex; flex-direction: column; gap: 4px; }
.filters label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.filters select, .filters input {
  background: var(--panel); color: var(--text); border: 1px solid var(--line);
  border-radius: 8px; padding: 8px 10px; font-size: 14px; min-width: 120px;
}
.filters label.switch {
  display: flex; align-items: center; gap: 8px; text-transform: none; letter-spacing: 0;
  font-size: 14px; color: var(--text); cursor: pointer; padding: 8px 0; min-width: 120px;
}
.filters label.switch input { min-width: 0; width: 16px; height: 16px; accent-color: var(--accent); cursor: pointer; }
.filters .btn-mini {
  background: var(--accent); color: #fff; border: none; border-radius: 8px;
  padding: 9px 14px; font-size: 13px; font-weight: 600; cursor: pointer; white-space: nowrap;
}
.filters .btn-mini:hover { filter: brightness(1.08); }

main { padding: 24px; max-width: 1500px; margin: 0 auto; }
.view { display: none; }
.view.active { display: block; }

/* ---------- cards / KPIs ---------- */
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 14px; margin-bottom: 22px; }
.kpi {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px 18px;
}
.kpi .label { color: var(--muted); font-size: 12px; margin-bottom: 8px; }
.kpi .value { font-size: 24px; font-weight: 700; }
.kpi .sub { font-size: 12px; margin-top: 6px; }
.up { color: var(--green); }
.down { color: var(--red); }

.panel {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px; margin-bottom: 22px;
}
.panel h2 { font-size: 15px; margin: 0 0 14px; }
.chart-wrap { position: relative; height: 340px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
@media (max-width: 1000px) { .grid-2 { grid-template-columns: 1fr; } }

/* ---------- table ---------- */
.table-tools { display: flex; gap: 12px; align-items: center; margin-bottom: 12px; flex-wrap: wrap; }
.table-tools input { background: var(--panel-2); color: var(--text); border: 1px solid var(--line);
  border-radius: 8px; padding: 8px 10px; min-width: 220px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 9px 10px; text-align: right; border-bottom: 1px solid var(--line); white-space: nowrap; }
th:first-child, td:first-child { text-align: left; position: sticky; left: 0; background: var(--panel); }
thead th { color: var(--muted); font-weight: 600; cursor: pointer; user-select: none; position: sticky; top: 0; background: var(--panel); }
thead th:hover { color: var(--text); }
thead th.sorted { color: var(--accent); }
tbody tr:hover { background: var(--panel-2); }
.table-scroll { overflow: auto; max-height: 620px; border: 1px solid var(--line); border-radius: var(--radius); }
.rank-badge { display: inline-block; min-width: 22px; text-align: center; }
.muted { color: var(--muted); }