:root {
  color-scheme: dark;
  --bg: #0b0d12;
  --card: #151821;
  --border: #262b38;
  --text: #e6e8ee;
  --muted: #8a90a2;
  --accent: #5b8def;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
header { display: flex; align-items: baseline; gap: 12px; padding: 16px 24px; border-bottom: 1px solid var(--border); }
header h1 { font-size: 18px; margin: 0; }
.tag { color: var(--muted); font-size: 13px; }
main { max-width: 640px; margin: 0 auto; padding: 24px; }
.muted { color: var(--muted); font-size: 13px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 16px; margin-bottom: 12px; }
.button, a.button { display: inline-block; background: var(--accent); color: #fff; border: 0; border-radius: 8px; padding: 10px 18px; font-size: 14px; font-weight: 600; cursor: pointer; text-decoration: none; }
.pass-card { display: flex; gap: 16px; align-items: center; }
.pass-card img.qr { width: 96px; height: 96px; border-radius: 8px; background: #fff; padding: 6px; flex: none; }
.pass-card .info { flex: 1; }
.pass-card h3 { margin: 0 0 4px; font-size: 16px; }
.signin-box { text-align: center; padding: 60px 20px; }