:root {
  color-scheme: dark;
  --bg: #0d1117;
  --bg-surface: #161b22;
  --bg-tile: #1c2128;
  --bg-sidebar: #12161c;
  --fg: #e6edf3;
  --fg-muted: #8b949e;
  --accent: #d4a849;
  --accent-dim: rgba(212,168,73,0.15);
  --good: #3fb950;
  --bad: #f85149;
  --warn: #d29922;
  --info: #58a6ff;
  --border: #21262d;
  --border-light: #30363d;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--fg); min-height: 100vh; }
body.admin { padding: 0; }

/* ── Top bar (Panorama-style) ──────────────────────────────────────── */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 1rem; height: 48px;
  background: #0d1117; border-bottom: 1px solid var(--border);
}
.topbar-left { display: flex; align-items: center; gap: 1.5rem; }
.topbar-right { display: flex; align-items: center; gap: 0.75rem; }
.brand {
  font-weight: 700; font-size: 1.1rem; letter-spacing: 0.04em;
  color: var(--accent);
}
.topbar-tabs { display: flex; gap: 0; }
.topbar-tab {
  padding: 0 1rem; height: 48px; line-height: 48px;
  font-size: 0.8rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--fg-muted); text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.topbar-tab:hover { color: var(--fg); background: rgba(255,255,255,0.03); }
.topbar-tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.mode-pill {
  padding: 0.2rem 0.65rem; border-radius: 999px;
  background: var(--accent-dim); color: var(--accent);
  font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em;
}
.nav-logout {
  background: none; border: 1px solid var(--border);
  color: var(--fg-muted); border-radius: 4px; padding: 0.2rem 0.6rem;
  font-family: inherit; font-size: 0.8rem; cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
.nav-logout:hover { color: var(--bad); border-color: var(--bad); }

/* ── Page layout (sidebar + main) ──────────────────────────────────── */
.page-layout { display: flex; min-height: calc(100vh - 48px - 40px); }
main { flex: 1; padding: 1.25rem 1.5rem; max-width: 1400px; overflow-x: auto; }
h1 { font-size: 1.15rem; margin: 0 0 1rem; font-weight: 600; color: var(--fg); }

/* ── Left sidebar / tree nav ───────────────────────────────────────── */
.sidebar {
  width: 220px; min-width: 220px;
  background: var(--bg-sidebar); border-right: 1px solid var(--border);
  padding: 0.75rem 0; overflow-y: auto;
}
.sidebar-section {
  padding: 0.4rem 0.75rem; font-size: 0.7rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em; color: var(--fg-muted);
  margin-top: 0.5rem;
}
.sidebar-item {
  display: block; padding: 0.35rem 0.75rem 0.35rem 1.25rem;
  font-size: 0.82rem; color: var(--fg-muted); text-decoration: none;
  transition: color 0.12s, background 0.12s;
}
.sidebar-item:hover { color: var(--fg); background: rgba(255,255,255,0.04); }
.sidebar-item.active { color: var(--accent); background: var(--accent-dim); }
.sidebar-item-child { padding-left: 2rem; font-size: 0.78rem; }

/* ── Tiles / KPI cards ─────────────────────────────────────────────── */
.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 0.65rem; }
.tiles.big { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.tile {
  background: var(--bg-tile); border: 1px solid var(--border); border-radius: 6px;
  padding: 0.75rem 0.85rem; transition: border-color 0.15s;
}
.tile:hover { border-color: var(--border-light); }
.tile-label { color: var(--fg-muted); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.05em; }
.tile-value { font-size: 1.6rem; margin-top: 0.2rem; font-weight: 700; }
.tile-sub { color: var(--fg-muted); font-size: 0.75rem; margin-top: 0.15rem; }
.tile .unit { font-size: 0.8rem; color: var(--fg-muted); }
.tile-bad { border-color: var(--bad); }
.tile-bad .tile-value { color: var(--bad); }
.tile-allow { border-color: rgba(63,185,80,0.35); }
.tile-listen { border-color: rgba(88,166,255,0.35); }
.tile-block { border-color: rgba(248,81,73,0.35); }

/* ── Data tables ───────────────────────────────────────────────────── */
.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td {
  padding: 0.4rem 0.6rem; border-bottom: 1px solid var(--border);
  font-size: 0.82rem; text-align: left;
}
.data-table th { color: var(--fg-muted); font-weight: 600; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.04em; background: var(--bg-surface); position: sticky; top: 0; }
.data-table tr:hover { background: rgba(255,255,255,0.02); }
.monitor { width: 100%; border-collapse: collapse; }
.monitor th, .monitor td { padding: 0.4rem 0.6rem; border-bottom: 1px solid var(--border); font-size: 0.82rem; text-align: left; }
.monitor th { color: var(--fg-muted); font-weight: 600; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.04em; }

/* ── Tags ──────────────────────────────────────────────────────────── */
.tag {
  display: inline-block; padding: 0.12rem 0.45rem; border-radius: 3px;
  font-size: 0.72rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.03em;
}
.tag-allow { background: rgba(63,185,80,0.15); color: var(--good); }
.tag-block { background: rgba(248,81,73,0.15); color: var(--bad); }
.tag-listen { background: rgba(88,166,255,0.15); color: var(--info); }
.tag-enforce { background: rgba(212,168,73,0.15); color: var(--accent); }
.tag-detect { background: rgba(210,153,34,0.15); color: var(--warn); }
.tag-security { background: rgba(136,132,216,0.15); color: #8884d8; }
.tag-identity { background: rgba(130,202,157,0.15); color: #82ca9d; }

/* ── Filter toolbar (Panorama-style) ───────────────────────────────── */
.filter-bar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem;
  padding: 0.5rem 0.65rem; margin-bottom: 0.75rem;
  background: var(--bg-surface); border: 1px solid var(--border); border-radius: 6px;
}
.filter-bar input, .filter-bar select {
  background: var(--bg-tile); color: var(--fg); border: 1px solid var(--border);
  border-radius: 4px; padding: 0.3rem 0.5rem; font-family: inherit; font-size: 0.8rem;
}
.filter-bar label { font-size: 0.75rem; color: var(--fg-muted); display: flex; align-items: center; gap: 0.3rem; }
.filters { display: flex; flex-wrap: wrap; gap: 0.5rem 1rem; margin: 0.5rem 0 1rem; }
.filters label { display: flex; flex-direction: column; font-size: 0.8rem; color: var(--fg-muted); }
.filters input, .filters select { background: var(--bg-tile); color: var(--fg); border: 1px solid var(--border); border-radius: 4px; padding: 0.35rem 0.5rem; font-family: inherit; font-size: 0.85rem; min-width: 12ch; }

/* ── Chart panels ──────────────────────────────────────────────────── */
.chart-panel { background: var(--bg-tile); border: 1px solid var(--border); border-radius: 8px; padding: 1rem; margin: 0.75rem 0; }
.chart-panel canvas { display: block; }
.chart-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; margin: 0.75rem 0; }
.chart-card { background: var(--bg-tile); border: 1px solid var(--border); border-radius: 8px; padding: 1rem; }
.chart-card canvas { display: block; }

/* ── Sub-tabs (within a page) ──────────────────────────────────────── */
.sub-tabs { display: flex; gap: 0; border-bottom: 1px solid var(--border); margin-bottom: 1rem; }
.sub-tab {
  padding: 0.5rem 1rem; font-size: 0.78rem; font-weight: 600;
  color: var(--fg-muted); cursor: pointer; border-bottom: 2px solid transparent;
  transition: color 0.12s, border-color 0.12s;
}
.sub-tab:hover { color: var(--fg); }
.sub-tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ── Sim panel ─────────────────────────────────────────────────────── */
.sim-panel { background: var(--bg-tile); border: 1px solid var(--border); border-radius: 8px; padding: 0.75rem 1rem; margin: 0.75rem 0; }
.sim-title { font-size: 0.78rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--fg-muted); margin: 0 0 0.5rem; }
.sim-controls { display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem; }
.sim-label { display: flex; align-items: center; gap: 0.35rem; font-size: 0.78rem; color: var(--fg-muted); }
.sim-label input[type=range] { width: 80px; accent-color: var(--accent); }
.sim-label select { background: var(--bg); color: var(--fg); border: 1px solid var(--border); border-radius: 4px; padding: 0.2rem 0.4rem; font-family: inherit; font-size: 0.78rem; }
.sim-btn { border: none; border-radius: 5px; padding: 0.35rem 0.85rem; font-family: inherit; font-size: 0.78rem; font-weight: 600; cursor: pointer; transition: opacity 0.15s; }
.sim-btn:disabled { opacity: 0.3; cursor: default; }
.sim-btn-go { background: var(--good); color: #0d1117; }
.sim-btn-stop { background: var(--bad); color: #0d1117; }

/* ── Sparklines ────────────────────────────────────────────────────── */
.sparkline-row { display: flex; gap: 0.75rem; margin: 0.5rem 0 1rem; }
.sparkline-card { flex: 1; background: var(--bg-tile); border: 1px solid var(--border); border-radius: 6px; padding: 0.4rem 0.6rem; }
.sparkline-label { font-size: 0.68rem; color: var(--fg-muted); text-transform: uppercase; letter-spacing: 0.05em; }
.sparkline-card canvas { display: block; width: 100%; height: 40px; }

/* ── Stat cards ────────────────────────────────────────────────────── */
.stat-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 0.65rem; margin-bottom: 0.75rem; }
.stat-card { background: var(--bg-tile); border: 1px solid var(--border); border-radius: 6px; padding: 0.65rem 0.85rem; text-align: center; }
.stat-card-value { font-size: 1.5rem; font-weight: 700; }
.stat-card-label { font-size: 0.68rem; color: var(--fg-muted); text-transform: uppercase; letter-spacing: 0.05em; margin-top: 0.1rem; }

/* ── Settings panels (for Setup page) ──────────────────────────────── */
.settings-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }
.settings-panel { background: var(--bg-tile); border: 1px solid var(--border); border-radius: 8px; padding: 1rem; }
.settings-panel-title {
  font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--fg-muted); margin: 0 0 0.75rem; padding-bottom: 0.5rem; border-bottom: 1px solid var(--border);
}
.settings-row { display: flex; justify-content: space-between; align-items: baseline; padding: 0.3rem 0; font-size: 0.82rem; }
.settings-key { color: var(--fg-muted); }
.settings-val { color: var(--fg); font-weight: 500; }

/* ── Login page ────────────────────────────────────────────────────── */
.login-wrap { display: flex; justify-content: center; align-items: center; min-height: calc(100vh - 48px - 40px); }
.login-card {
  background: var(--bg-surface); border: 1px solid var(--border); border-radius: 10px;
  padding: 2rem; width: 100%; max-width: 380px;
}
.login-card .login-brand { text-align: center; margin-bottom: 1.5rem; }
.login-card .login-brand span { font-size: 1.4rem; font-weight: 700; color: var(--accent); letter-spacing: 0.04em; }
.login-card .login-brand small { display: block; font-size: 0.75rem; color: var(--fg-muted); margin-top: 0.25rem; }
.login-form { display: flex; flex-direction: column; gap: 0.75rem; }
.login-form label { font-size: 0.8rem; color: var(--fg-muted); font-weight: 600; }
.login-form input { background: var(--bg-tile); color: var(--fg); border: 1px solid var(--border); border-radius: 5px; padding: 0.55rem 0.75rem; font-family: inherit; font-size: 0.9rem; }
.login-form input:focus { outline: none; border-color: var(--accent); }
.login-form button[type=submit] {
  background: var(--accent); color: #0d1117; border: none; border-radius: 5px;
  padding: 0.6rem; font-family: inherit; font-size: 0.9rem; font-weight: 700;
  cursor: pointer; margin-top: 0.5rem; transition: opacity 0.15s;
}
.login-form button[type=submit]:hover { opacity: 0.85; }
.alert.error { background: rgba(248,81,73,0.12); border: 1px solid var(--bad); color: var(--bad); padding: 0.5rem 0.75rem; border-radius: 5px; font-size: 0.82rem; margin-bottom: 0.75rem; }

/* ── Misc ──────────────────────────────────────────────────────────── */
.muted { color: var(--fg-muted); }
.sub { color: var(--fg-muted); font-size: 0.75rem; margin-top: 0.75rem; }
.sub code { background: var(--bg-tile); padding: 0.1rem 0.35rem; border-radius: 3px; }
.footer { padding: 0.75rem 1.5rem; color: var(--fg-muted); font-size: 0.7rem; text-align: center; border-top: 1px solid var(--border); }
.page-title { font-size: 0.85rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--fg-muted); margin: 0 0 1rem; }

/* ── Responsive ────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .topbar { flex-wrap: wrap; height: auto; padding: 0.5rem 0.75rem; gap: 0.5rem; }
  .topbar-left { flex-wrap: wrap; gap: 0.5rem; }
  .topbar-tabs { flex-wrap: wrap; gap: 0; }
  .topbar-tab { padding: 0 0.6rem; height: 40px; line-height: 40px; font-size: 0.72rem; }
  .sidebar { display: none; }
  .page-layout { flex-direction: column; }
  main { padding: 0.75rem; }
  .tiles { grid-template-columns: 1fr; }
  .tiles.big { grid-template-columns: 1fr; }
  .chart-row { grid-template-columns: 1fr; }
  .settings-grid { grid-template-columns: 1fr; }
  .tile-value { font-size: 1.2rem; }
}

@media (max-width: 480px) {
  .tile-value { font-size: 1rem; }
  .tile { padding: 0.5rem 0.65rem; }
  h1 { font-size: 1rem; }
}