:root {
  color-scheme: dark;
  --bg: #0f1115;
  --panel: rgba(25, 28, 41, .92);
  --line: rgba(255, 255, 255, .1);
  --ink: #f8fafc;
  --muted: #94a3b8;
  --accent: #60a5fa;
  --accent-dark: #3b82f6;
  --danger: #f87171;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
body { min-height: 100vh; margin: 0; display: grid; place-items: center; background: radial-gradient(circle at 15% 45%, #1a1c29 0%, #0f1115 58%, #090b0f 100%); color: var(--ink); padding: 24px; }
main { width: min(460px, 100%); border: 1px solid var(--line); border-radius: 12px; background: var(--panel); box-shadow: 0 18px 44px rgba(0, 0, 0, .34); padding: 28px; }
h1, p { margin: 0; }
.brand { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
.brand-mark { width: 42px; height: 42px; border: 1px solid rgba(96, 165, 250, .35); border-radius: 50%; display: grid; place-items: center; background: rgba(96, 165, 250, .14); color: var(--accent); font-weight: 900; }
h1 { font-size: 28px; line-height: 1.05; }
.brand p { margin-top: 5px; color: var(--muted); font-size: 14px; font-weight: 700; }
form, .stack { display: grid; gap: 16px; }
label { display: grid; gap: 8px; color: var(--muted); font-size: 13px; font-weight: 800; text-transform: uppercase; }
input { width: 100%; min-height: 50px; border: 1px solid var(--line); border-radius: 8px; outline: none; background: rgba(255, 255, 255, .055); color: var(--ink); font: inherit; font-size: 17px; padding: 0 14px; }
input:focus { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(96, 165, 250, .16); }
button, .button-link { min-height: 48px; border: 0; border-radius: 8px; display: inline-flex; align-items: center; justify-content: center; background: var(--accent); color: #fff; cursor: pointer; font: inherit; font-weight: 800; text-decoration: none; }
button:hover, .button-link:hover { background: var(--accent-dark); }
.secondary-link { border: 1px solid var(--line); background: rgba(255, 255, 255, .055); }
.secondary-link:hover { background: rgba(255, 255, 255, .1); }
.login-error { border: 1px solid rgba(248, 113, 113, .35); border-radius: 8px; background: rgba(248, 113, 113, .1); color: var(--danger); font-size: 14px; font-weight: 800; padding: 12px 14px; }
.setup-copy { color: var(--muted); font-size: 14px; font-weight: 700; line-height: 1.45; }
.qr-card { display: grid; place-items: center; border: 1px solid var(--line); border-radius: 10px; background: #fff; padding: 14px; }
.qr-card img { width: min(230px, 100%); height: auto; }
.secret-box { border: 1px solid var(--line); border-radius: 8px; background: rgba(255, 255, 255, .055); color: var(--ink); font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; font-size: 13px; overflow-wrap: anywhere; padding: 12px; }