:root {
  color-scheme: light;
  --bg: #f8fafc;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --accent: #0369a1;
  --danger: #dc2626;
  --ok: #15803d;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.app-shell {
  max-width: 980px;
  margin: 0 auto;
  padding: 16px;
}

.offline-page {
  max-width: 640px;
  margin: 14vh auto;
  background: var(--surface);
  border-radius: 12px;
  padding: 20px;
}

#network-badge {
  position: fixed;
  right: 12px;
  bottom: 12px;
  z-index: 9999;
  padding: 8px 12px;
  border-radius: 999px;
  color: #fff;
  font-size: 12px;
  font-weight: 600;
}

#network-badge[data-state='online'] {
  background: var(--ok);
}

#network-badge[data-state='offline'] {
  background: var(--danger);
}