:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --line: #e5e7eb;
  --accent: #1f2937;
  --ok: #16a34a;
  --bad: #dc2626;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a;
    --card: #1e293b;
    --text: #e5e7eb;
    --muted: #94a3b8;
    --line: #334155;
    --accent: #e5e7eb;
    --ok: #4ade80;
    --bad: #f87171;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: max(12px, env(safe-area-inset-top)) 16px 12px;
  border-bottom: 1px solid var(--line);
  background: var(--card);
}

.topbar h1 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
}

.badge {
  font-size: 13px;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
}

.badge[data-state="ok"] {
  color: var(--ok);
  border-color: currentColor;
}

.badge[data-state="error"] {
  color: var(--bad);
  border-color: currentColor;
}

.content {
  padding: 16px;
  max-width: 640px;
  margin: 0 auto;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
}

.card h2 {
  margin: 0 0 8px;
  font-size: 16px;
}

.card p {
  margin: 0 0 12px;
  color: var(--muted);
}

.kv {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 12px;
  margin: 0;
  font-size: 14px;
}

.kv dt {
  color: var(--muted);
}

.kv dd {
  margin: 0;
  font-variant-numeric: tabular-nums;
}