:root {
  --bg: #0f1419;
  --bg-elevated: #171d24;
  --bg-panel: #1b222b;
  --border: #2a3441;
  --text: #e8edf2;
  --text-muted: #9aa7b5;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --online: #22c55e;
  --unstable: #eab308;
  --suspect: #f97316;
  --offline: #ef4444;
  --unknown: #6b7280;
  --error-bg: #3f1d24;
  --error-text: #fecaca;
  --radius: 8px;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.35);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

code {
  background: var(--bg-elevated);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-size: 0.9em;
}

.topbar {
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
}

.topbar-inner,
.container,
.footer-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1rem;
}

.topbar-inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: 56px;
}

.brand {
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
}

.nav { display: flex; gap: 0.25rem; flex: 1; }

.nav-link {
  color: var(--text-muted);
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius);
  text-decoration: none;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text);
  background: var(--bg-panel);
  text-decoration: none;
}

.topbar-actions { display: flex; gap: 0.5rem; align-items: center; }

.container { padding-top: 1rem; padding-bottom: 2rem; }

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1rem;
}

.page-header h1 { margin: 0 0 0.25rem; font-size: 1.5rem; }
.page-header-actions { display: flex; gap: 0.75rem; align-items: center; }

.muted { color: var(--text-muted); font-size: 0.9rem; }

.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.summary-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  box-shadow: var(--shadow);
}

.summary-card .label {
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-bottom: 0.35rem;
}

.summary-card .value {
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1.1;
}

.summary-card.online .value { color: var(--online); }
.summary-card.unstable .value { color: var(--unstable); }
.summary-card.suspect .value { color: var(--suspect); }
.summary-card.offline .value { color: var(--offline); }
.summary-card.unknown .value { color: #6b7280; }

.notice-banner {
  margin: 0 0 1rem;
  padding: 0.75rem 1rem;
  border: 1px solid #d1d5db;
  border-radius: 0.5rem;
  background: #f3f4f6;
  color: #374151;
}

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 1rem;
  box-shadow: var(--shadow);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.panel-header h2 {
  margin: 0;
  font-size: 1rem;
}

.toolbar {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
}

.filter-group { display: flex; gap: 0.35rem; flex-wrap: wrap; }

.chip {
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-muted);
  border-radius: 999px;
  padding: 0.25rem 0.65rem;
  cursor: pointer;
  font-size: 0.82rem;
}

.chip.active,
.chip:hover {
  color: var(--text);
  border-color: var(--primary);
}

.btn {
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 0.45rem 0.8rem;
  cursor: pointer;
  font-size: 0.9rem;
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-primary:hover { background: var(--primary-hover); }

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

.input,
.select {
  background: var(--bg-elevated);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.45rem 0.65rem;
  font-size: 0.9rem;
}

.search-input { min-width: 220px; }

.inline-label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.table-wrap { overflow: auto; }

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.data-table th,
.data-table td {
  padding: 0.55rem 0.75rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.data-table th {
  color: var(--text-muted);
  font-weight: 600;
  background: var(--bg-elevated);
  position: sticky;
  top: 0;
}

.data-table tbody tr:hover { background: rgba(255, 255, 255, 0.02); }

.empty-cell {
  text-align: center;
  color: var(--text-muted);
  padding: 1.25rem !important;
}

.badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: lowercase;
  border: 1px solid transparent;
}

.badge-online { color: #052e16; background: #86efac; border-color: #22c55e; }
.badge-unstable { color: #422006; background: #fde047; border-color: #eab308; }
.badge-suspect { color: #431407; background: #fdba74; border-color: #f97316; }
.badge-offline { color: #450a0a; background: #fca5a5; border-color: #ef4444; }
.badge-unknown { color: #1f2937; background: #e5e7eb; border-color: #9ca3af; }
.badge-default { color: #111827; background: #d1d5db; border-color: #6b7280; }

.detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.75rem;
  padding: 1rem;
}

.detail-item {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.65rem 0.75rem;
}

.detail-item .label {
  color: var(--text-muted);
  font-size: 0.78rem;
  margin-bottom: 0.2rem;
}

.metric-chart {
  display: block;
  width: 100%;
  max-width: 100%;
  margin: 0.5rem 0 0;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
}

.banner {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
}

.banner-error {
  background: var(--error-bg);
  color: var(--error-text);
  border: 1px solid #7f1d1d;
}

.footer {
  border-top: 1px solid var(--border);
  background: var(--bg-elevated);
  margin-top: 1rem;
}

.footer-inner {
  padding: 0.75rem 1rem 1.25rem;
}

.health-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.health-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.health-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--unknown);
}

.health-dot.ok { background: var(--online); }
.health-dot.warn { background: var(--suspect); }

.modal[hidden] { display: none !important; }

.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
}

.modal-card {
  position: relative;
  width: min(420px, calc(100vw - 2rem));
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow);
}

.modal-card h2 { margin: 0 0 0.5rem; font-size: 1.1rem; }
.modal-actions { display: flex; justify-content: flex-end; gap: 0.5rem; margin-top: 1rem; }

@media (max-width: 900px) {
  .topbar-inner { flex-wrap: wrap; }
  .search-input { min-width: 160px; }
}