:root {
  --bg: #0a0f1a;
  --bg-panel: #111a28;
  --bg-panel-alt: #0d1521;
  --bg-navbar: #0d1420;
  --border: #1e2b3d;
  --text: #d7e2ec;
  --text-dim: #7e94a6;
  --accent: #22d3ee;
  --accent-dim: #0e7490;
  --online: #34d399;
  --warning: #fbbf24;
  --offline: #f87171;
  --critical: #ef4444;
  --rail-width: 48px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  font-size: 14px;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ---------- Top navbar ---------- */

.navbar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 10px 20px 10px calc(var(--rail-width) + 16px);
  background: var(--bg-navbar);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1100;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

.brand-name {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text);
}

.navbar-nav {
  display: flex;
  gap: 18px;
  flex: 1;
}

.nav-link {
  font-size: 13px;
  color: var(--text-dim);
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
}

.nav-link:hover {
  color: var(--text);
}

.nav-link.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.navbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.search-input {
  background: var(--bg-panel-alt);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 12px;
  width: 200px;
}

.icon-btn {
  position: relative;
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-size: 15px;
  cursor: pointer;
  padding: 4px;
}

.icon-btn:hover {
  color: var(--text);
}

.badge-dot {
  position: absolute;
  top: -2px;
  right: -4px;
  background: var(--critical);
  color: #fff;
  font-size: 9px;
  font-weight: 700;
  border-radius: 999px;
  padding: 1px 4px;
  min-width: 14px;
  text-align: center;
}

.user-chip {
  display: flex;
  align-items: center;
}

.user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent-dim);
  color: #e6fbff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
}

/* ---------- Ops header strip ---------- */

.ops-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px 10px calc(var(--rail-width) + 16px);
  background: var(--bg-panel-alt);
  border-bottom: 1px solid var(--border);
}

.ops-title {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  text-transform: uppercase;
}

.ops-sep {
  color: var(--border);
  margin: 0 6px;
}

.ops-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.ops-clock {
  font-family: "SFMono-Regular", Consolas, monospace;
  color: var(--accent);
  font-size: 13px;
  letter-spacing: 0.03em;
}

.last-updated {
  font-size: 12px;
  color: var(--text-dim);
}

.btn {
  background: var(--accent-dim);
  color: #e6fbff;
  border: 1px solid var(--accent);
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 12px;
  cursor: pointer;
  transition: background 0.15s ease;
}

.btn:hover {
  background: var(--accent);
  color: #06141a;
}

.btn-ghost {
  background: transparent;
  color: var(--text-dim);
  border-color: var(--border);
}

.btn-ghost:hover {
  background: var(--bg-panel-alt);
  color: var(--text);
}

/* ---------- Settings panel ---------- */

.settings-panel {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px 12px calc(var(--rail-width) + 16px);
  background: var(--bg-panel-alt);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.settings-panel.hidden {
  display: none;
}

.settings-panel label {
  color: var(--text-dim);
  font-size: 12px;
}

.settings-panel input {
  flex: 1;
  min-width: 320px;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 13px;
}

.settings-hint {
  width: 100%;
  margin: 0;
  font-size: 11px;
  color: var(--text-dim);
}

/* ---------- Left icon rail ---------- */

.icon-rail {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--rail-width);
  background: var(--bg-navbar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 16px;
  gap: 18px;
  z-index: 1200;
}

.rail-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  color: var(--text-dim);
  font-size: 16px;
}

.rail-icon:hover {
  background: var(--bg-panel-alt);
  color: var(--text);
}

.rail-icon.active {
  background: var(--accent-dim);
  color: var(--accent);
}

/* ---------- Dashboard grid ---------- */

.dashboard-grid {
  display: grid;
  grid-template-columns: 300px 1fr 340px;
  gap: 1px;
  background: var(--border);
  padding-left: var(--rail-width);
}

.col-left, .col-center, .col-right {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--border);
}

/* ---------- Panels ---------- */

.panel {
  background: var(--bg-panel);
  padding: 14px 16px;
}

.panel h2 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  margin: 0 0 10px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.panel-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.panel-header-row h2 {
  margin: 0;
}

.badge {
  background: var(--bg-panel-alt);
  border: 1px solid var(--border);
  color: var(--accent);
  border-radius: 999px;
  padding: 1px 8px;
  font-size: 11px;
}

.panel-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 260px;
  overflow-y: auto;
}

.empty-state {
  color: var(--text-dim);
  font-size: 12px;
  margin: 0;
  padding: 6px 0;
}

/* ---------- Donut charts ---------- */

.donut-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}

.donut-row:last-child {
  margin-bottom: 0;
}

.donut-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
}

.donut {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  position: relative;
  background: conic-gradient(var(--border) 0 100%);
}

.donut::before {
  content: "";
  position: absolute;
  inset: 12px;
  background: var(--bg-panel);
  border-radius: 50%;
}

.donut::after {
  content: attr(data-label);
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 11px;
  font-weight: 700;
  color: var(--text);
  white-space: pre-line;
  line-height: 1.3;
}

.donut-title {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 6px;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.donut-legend {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
}

.donut-legend .legend-row {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-dim);
}

.legend-swatch {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: inline-block;
}

/* ---------- Alert / update / unmapped rows ---------- */

.alert-row, .unmapped-row {
  background: var(--bg-panel-alt);
  border: 1px solid var(--border);
  border-left: 3px solid var(--text-dim);
  border-radius: 4px;
  padding: 8px 10px;
  font-size: 12px;
}

.alert-row.sev-critical {
  border-left-color: var(--critical);
  background: rgba(239, 68, 68, 0.08);
}

.alert-row.sev-warning {
  border-left-color: var(--warning);
  background: rgba(251, 191, 36, 0.06);
}

.alert-row .alert-sev-label {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 1px 6px;
  border-radius: 3px;
  margin-right: 6px;
}

.alert-row.sev-critical .alert-sev-label {
  background: var(--critical);
  color: #fff;
}

.alert-row.sev-warning .alert-sev-label {
  background: var(--warning);
  color: #1a1400;
}

.alert-row .alert-site {
  font-weight: 600;
  color: var(--text);
}

.alert-row .alert-msg {
  color: var(--text-dim);
  display: block;
  margin-top: 2px;
}

.version-tag {
  font-family: "SFMono-Regular", Consolas, monospace;
  color: var(--accent);
}

/* ---------- Map ---------- */

.map-wrap {
  position: relative;
}

#map {
  height: 460px;
  width: 100%;
  background: #0a0d12;
  border-radius: 4px;
}

.layers-panel {
  position: absolute;
  top: 10px;
  right: 10px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 12px;
  font-size: 12px;
  z-index: 900;
  box-shadow: 0 4px 16px rgba(0,0,0,0.5);
}

.layers-panel.hidden {
  display: none;
}

.layers-panel h3 {
  margin: 0 0 8px 0;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
}

.layers-panel label {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 6px;
  color: var(--text);
}

/* ---------- Tables ---------- */

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

thead th {
  text-align: left;
  color: var(--text-dim);
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.05em;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
}

tbody td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

tbody tr:hover {
  background: var(--bg-panel-alt);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}

.status-pill.online {
  background: rgba(52, 211, 153, 0.12);
  color: var(--online);
}

.status-pill.warning {
  background: rgba(251, 191, 36, 0.12);
  color: var(--warning);
}

.status-pill.offline {
  background: rgba(248, 113, 113, 0.12);
  color: var(--offline);
}

.critical-cell {
  color: var(--critical);
  font-weight: 600;
}

/* ---------- Map marker tooltip ---------- */

.leaflet-tooltip.site-tooltip {
  background: var(--bg-panel);
  color: var(--text);
  border: 1px solid var(--accent-dim);
  font-size: 12px;
  border-radius: 4px;
}

/* ---------- Error banner ---------- */

.error-banner {
  position: fixed;
  bottom: 16px;
  right: 16px;
  background: rgba(239, 68, 68, 0.95);
  color: #fff;
  padding: 10px 16px;
  border-radius: 6px;
  font-size: 13px;
  max-width: 420px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
  z-index: 2000;
}

.error-banner.hidden {
  display: none;
}

/* ---------- Responsive ---------- */

@media (max-width: 1100px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }

  .navbar-nav {
    display: none;
  }

  .search-input {
    width: 140px;
  }
}

@media (max-width: 700px) {
  :root {
    --rail-width: 0px;
  }

  .icon-rail {
    display: none;
  }

  .navbar, .ops-header, .settings-panel, .dashboard-grid {
    padding-left: 12px;
  }
}