/* Passkey demo — dark, phone-first, no horizontal scrolling, 44px tap targets.
   Two rules the layout depends on: the phone block is LAST (an equal-specificity rule further
   down the file beats a media query written above it), and nothing sets a fixed width that a
   360px screen cannot hold. */
:root {
  --bg: #0d1117;
  --panel: #161b22;
  --panel2: #1c2330;
  --line: #2a3240;
  --text: #e6edf3;
  --muted: #9aa7b4;
  --accent: #4c8dff;
  --good: #3fb950;
  --bad: #f85149;
  --tap: 2.75rem;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { background: var(--panel2); padding: 1px 5px; border-radius: 5px; font-size: 13px; }
.hidden { display: none; }
.muted { color: var(--muted); }
.inline { display: inline; }

.topbar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; padding: 10px 18px;
  border-bottom: 1px solid var(--line); background: var(--panel); position: sticky; top: 0; z-index: 5; }
.brand { display: flex; align-items: center; gap: 8px; color: var(--text); font-weight: 600; }
.brand:hover { text-decoration: none; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--accent); display: inline-block; }
.nav { display: flex; gap: 14px; font-size: 14px; }
.pill { margin-left: auto; font-size: 13px; color: var(--muted); border: 1px solid var(--line);
  border-radius: 999px; padding: 4px 12px; }
.pill.on { color: var(--text); border-color: var(--good); }

main { max-width: 980px; margin: 0 auto; padding: 18px; }
.hero { margin: 10px 0 22px; }
.hero h1 { margin: 0 0 6px; font-size: 26px; line-height: 1.2; }
.lede { color: var(--muted); margin: 0; }

.cards { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.card { display: block; background: var(--panel); border: 1px solid var(--line); border-radius: 12px;
  padding: 16px; color: var(--text); min-height: var(--tap); }
.card:hover { border-color: var(--accent); text-decoration: none; }
.card h2 { margin: 0 0 4px; font-size: 18px; }
.card .tag { margin: 0 0 8px; font-size: 12px; color: var(--accent); text-transform: uppercase;
  letter-spacing: .04em; }
.card p { margin: 0; color: var(--muted); font-size: 14px; }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 12px;
  padding: 16px; margin: 0 0 16px; }
.panel h2 { margin: 0 0 10px; font-size: 17px; }
.panel ul { margin: 0; padding-left: 18px; }
.panel li { margin-bottom: 6px; }
.panel-outcome { border-color: var(--accent); }
.panel-failed { border-color: var(--bad); }

.flow { background: var(--panel2); border: 1px solid var(--line); border-radius: 10px;
  padding: 14px; margin-bottom: 14px; }
.flow h2 { margin: 0 0 10px; font-size: 16px; }
.flow label { display: block; font-size: 13px; color: var(--muted); margin: 10px 0 4px; }
.flow input { width: 100%; background: var(--bg); color: var(--text); border: 1px solid var(--line);
  border-radius: 8px; padding: 10px 12px; font: inherit; min-height: var(--tap); }
.flow input:focus-visible, .btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.hint { color: var(--muted); font-size: 13px; margin: 10px 0 0; }

.btn { display: inline-block; background: var(--panel); color: var(--text); border: 1px solid var(--line);
  border-radius: 10px; padding: 10px 16px; font: inherit; min-height: var(--tap); cursor: pointer;
  margin-top: 12px; }
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #06101f; font-weight: 600; }
.btn.ghost { margin-top: 0; padding: 6px 12px; }

.inbox .badge { background: var(--bad); color: #1b0b0b; font-size: 11px; font-weight: 700;
  padding: 2px 7px; border-radius: 5px; vertical-align: middle; margin-right: 6px; }
.inbox .code { font-size: 30px; letter-spacing: .22em; font-variant-numeric: tabular-nums;
  margin: 8px 0 4px; }
.nofit { background: #2a1c1c; border: 1px solid var(--bad); border-radius: 10px; padding: 14px;
  margin-bottom: 14px; }

.foot { max-width: 980px; margin: 0 auto; padding: 8px 18px 40px; color: var(--muted); font-size: 13px; }

@media (max-width: 720px) {
  /* Two rows of chrome at most on a phone: the nav is the part that must not push the page
     sideways, so it scrolls itself if a fourth link ever arrives. */
  .topbar { padding: 8px 12px; gap: 8px; }
  .nav { order: 3; width: 100%; overflow-x: auto; }
  .pill { margin-left: 0; }
  main { padding: 12px; }
  .hero h1 { font-size: 22px; }
  .btn { min-height: var(--tap); }
}