:root {
  --bg: #0f172a;
  --card: #1e293b;
  --accent: #38bdf8;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --danger: #ef4444;
  --success: #22c55e;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 2rem 1.25rem;
}

.logo {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent);
  text-align: center;
}

.tagline {
  text-align: center;
  color: var(--muted);
  margin-bottom: 2rem;
}

.state {
  background: var(--card);
  border: 1px solid rgba(148, 163, 184, 0.15);
  border-radius: 12px;
  padding: 2rem;
  text-align: center;
}

.hidden {
  display: none;
}

code {
  background: rgba(148, 163, 184, 0.15);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.9em;
}

.btn {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.6rem 1.25rem;
  border-radius: 8px;
  background: var(--accent);
  color: #0f172a;
  font-weight: 600;
  text-decoration: none;
}

.btn:hover {
  filter: brightness(1.1);
}