:root {
  color-scheme: light dark;
  --fg: #1a1a1a;
  --bg: #ffffff;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #7c3aed;
  --ok: #16a34a;
  --ok-bg: #f0fdf4;
  --down: #dc2626;
  --down-bg: #fef2f2;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #e5e7eb;
    --bg: #111114;
    --muted: #9ca3af;
    --border: #2a2a30;
    --ok-bg: #0f2a17;
    --down-bg: #2a1414;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.5;
}

header, main, footer {
  max-width: 860px;
  margin: 0 auto;
  padding: 1.5rem;
}

header h1 {
  margin-bottom: 0.25rem;
}

.logo {
  height: 1.5em;
  width: auto;
  vertical-align: -0.3em;
  margin-right: 0.35rem;
}

.back-link {
  margin: 0 0 0.75rem 0;
  font-size: 0.9rem;
}

.back-link a {
  color: var(--muted);
  text-decoration: none;
}

.back-link a:hover {
  text-decoration: underline;
}

.tagline {
  color: var(--muted);
}

.monitor-id {
  font-size: 0.85rem;
  color: var(--muted);
}

code {
  background: var(--border);
  padding: 0.1rem 0.35rem;
  border-radius: 0.25rem;
  font-size: 0.85em;
  word-break: break-all;
}

a {
  color: var(--accent);
}

.error {
  margin-bottom: 1rem;
  padding: 0.75rem 1rem;
  border-radius: 0.375rem;
  background: var(--down-bg);
  color: var(--down);
  font-size: 0.9rem;
}

.relay-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.relay-table th,
.relay-table td {
  text-align: left;
  padding: 0.5rem 0.6rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.relay-table th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.status-badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
}

.status-badge.up {
  color: var(--ok);
  background: var(--ok-bg);
}

.status-badge.down {
  color: var(--down);
  background: var(--down-bg);
}

.nip-list {
  color: var(--muted);
  font-size: 0.8rem;
}

.notes {
  color: var(--muted);
  font-size: 0.8rem;
}

.empty {
  text-align: center;
  color: var(--muted);
  padding: 1.5rem 0;
}

.interval-note {
  margin-top: 0.75rem;
  color: var(--muted);
  font-size: 0.8rem;
}

footer {
  color: var(--muted);
  font-size: 0.85rem;
}