/* QTC Airgap Desk — arctic vault theme.
 * Deep ink navy, amber "airgap" accents, ice-teal quantum glow.
 * Shared chrome (nav, footer, buttons) comes from ../../assets/shared.css. */
:root {
  --ink: #04060d;
  --ink2: #0a0f1e;
  --panel: rgba(13, 20, 38, .72);
  --amber: #ffb02e;
  --amber-dim: rgba(255, 176, 46, .12);
  --ice: #57e6c9;
  --ice-dim: rgba(87, 230, 201, .08);
  --hot: #ff7a59;
  --txt: #e8edf7;
  --muted: #93a0bd;
  --line: rgba(147, 160, 189, .18);
  --danger: #ff5d6c;
  --ok: #5ee6a8;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--ink); color: var(--txt);
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
}
#frostfield { position: fixed; inset: 0; z-index: -1; opacity: .8; }

.nav.chrome {
  background: rgba(4, 6, 13, .82); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand span { color: var(--amber); }

.hero { padding: 64px 24px 8px; max-width: 1060px; margin: 0 auto; text-align: center; }
.kicker {
  font-size: 12px; letter-spacing: .28em; text-transform: uppercase;
  color: var(--ice); font-weight: 700; margin-bottom: 14px;
}
.hero h1 { font-size: clamp(34px, 6vw, 58px); line-height: 1.06; margin: 0 0 18px; letter-spacing: -.02em; }
.grad {
  background: linear-gradient(100deg, var(--amber), var(--ice));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lede { max-width: 720px; margin: 0 auto; color: var(--muted); font-size: 17px; line-height: 1.7; }
.lede strong { color: var(--txt); }

.proto-steps {
  display: flex; align-items: stretch; justify-content: center; gap: 10px;
  margin: 34px auto 10px; max-width: 980px; flex-wrap: wrap;
}
.pstep {
  display: flex; gap: 12px; align-items: flex-start; text-align: left;
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
  padding: 14px 16px; flex: 1 1 240px; min-width: 220px;
}
.pstep strong { display: block; font-size: 14.5px; margin-bottom: 4px; }
.pstep span { font-size: 12.5px; color: var(--muted); line-height: 1.5; display: block; }
.pnum {
  flex: 0 0 30px; width: 30px; height: 30px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 14px; margin-top: 2px;
}
.pnum.hot { background: rgba(255, 122, 89, .16); color: var(--hot); border: 1px solid rgba(255,122,89,.5); }
.pnum.cold { background: var(--ice-dim); color: var(--ice); border: 1px solid rgba(87,230,201,.5); }
.parrow { align-self: center; color: var(--amber); font-size: 22px; font-weight: 700; }

main { max-width: 1060px; margin: 0 auto; padding: 0 24px 60px; }

.notice {
  border-radius: 14px; padding: 16px 18px; margin: 26px 0; font-size: 14px; line-height: 1.6;
  border: 1px solid;
}
.notice.amber { background: var(--amber-dim); border-color: rgba(255,176,46,.4); }
.notice.amber strong { color: var(--amber); }
.notice.red { background: rgba(255,93,108,.08); border-color: rgba(255,93,108,.45); }
.notice.red strong { color: var(--danger); }

.tabs.big { display: flex; gap: 10px; margin: 8px 0 0; }
.tabs.big .tab {
  flex: 1; padding: 14px; font-size: 16px; border-radius: 14px 14px 0 0;
  background: rgba(10,15,30,.5); border: 1px solid var(--line); border-bottom: none;
  color: var(--muted); cursor: pointer; font-weight: 700;
}
.tabs.big .tab .tab-sub { display: block; font-size: 11.5px; font-weight: 500; margin-top: 2px; }
.tabs.big .tab.active { background: var(--panel); color: var(--txt); border-color: rgba(255,176,46,.45); }
.tabs.big .tab.active .tab-sub { color: var(--amber); }

.role { padding-top: 0; }
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: 16px;
  padding: 26px; margin: 18px 0; backdrop-filter: blur(8px);
}
.card.wide { margin-top: 26px; }
.card.sub { background: rgba(6, 10, 22, .6); margin: 16px 0 0; padding: 18px; }
.card h2 { margin: 0 0 10px; font-size: 21px; letter-spacing: -.01em; display: flex; align-items: center; gap: 10px; }
.card h3 { font-size: 15px; color: var(--ice); margin: 18px 0 6px; }
.step {
  flex: 0 0 28px; width: 28px; height: 28px; border-radius: 8px;
  background: var(--amber-dim); color: var(--amber); border: 1px solid rgba(255,176,46,.5);
  display: inline-flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 800;
}
.muted { color: var(--muted); }
.muted.small, .small { font-size: 13px; line-height: 1.65; }
ul.tight li { margin-bottom: 6px; }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.grid3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; }
@media (max-width: 720px) { .grid2, .grid3 { grid-template-columns: 1fr; } }

.fld { display: block; margin: 12px 0; font-size: 13px; font-weight: 600; color: var(--muted); }
.fld input, .fld textarea, .fld select {
  display: block; width: 100%; margin-top: 6px; padding: 11px 13px;
  background: rgba(4, 8, 18, .85); border: 1px solid var(--line); border-radius: 10px;
  color: var(--txt); font-size: 14px; font-family: ui-monospace, "SF Mono", Menlo, monospace;
  word-break: break-all;
}
.fld textarea { resize: vertical; }
.fld input:focus, .fld textarea:focus, .fld select:focus {
  outline: none; border-color: var(--amber); box-shadow: 0 0 0 3px rgba(255,176,46,.15);
}
.fld .hint { display: block; margin-top: 5px; font-weight: 400; }
.hint { font-size: 12.5px; color: var(--muted); }
.row { display: flex; gap: 10px; align-items: center; margin-top: 14px; flex-wrap: wrap; }
.row.wrap { flex-wrap: wrap; }

.btn {
  appearance: none; border: 1px solid var(--line); border-radius: 10px;
  padding: 11px 20px; font-size: 14px; font-weight: 700; cursor: pointer;
  background: rgba(20, 28, 52, .8); color: var(--txt); transition: transform .12s, box-shadow .12s;
}
.btn:hover:not(:disabled) { transform: translateY(-1px); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.primary {
  background: linear-gradient(135deg, #c47b12, var(--amber)); color: #160b00; border: none;
  box-shadow: 0 4px 22px rgba(255, 176, 46, .28);
}
.btn.ghost { background: transparent; }
.btn.small { padding: 8px 14px; font-size: 12.5px; }
.btn.danger { background: linear-gradient(135deg, #a3242f, #ff4354); color: #fff; border: none; }
.filebtn { position: relative; overflow: hidden; display: inline-block; }

.err {
  background: rgba(255, 93, 108, .1); border: 1px solid rgba(255,93,108,.45);
  color: #ffb3ba; border-radius: 10px; padding: 12px 14px; font-size: 13.5px; margin: 14px 0 0;
}
.okbox {
  background: rgba(94, 230, 168, .08); border: 1px solid rgba(94,230,168,.4);
  border-radius: 10px; padding: 14px 16px; font-size: 14px; margin-top: 14px; line-height: 1.7;
}
.okbox code { font-size: 12px; word-break: break-all; }

.kv { display: grid; grid-template-columns: 190px 1fr; gap: 7px 14px; margin: 16px 0; font-size: 13.5px; }
.kv dt { color: var(--muted); font-weight: 600; }
.kv dd { margin: 0; font-family: ui-monospace, "SF Mono", Menlo, monospace; word-break: break-all; font-size: 12.5px; }
.kv dd .big { font-size: 15px; color: var(--amber); font-weight: 700; }

.qr { border-radius: 12px; border: 1px solid var(--line); background: #fff; padding: 8px; }
.qr-big { width: 264px; height: 264px; border-radius: 14px; background: #fff; padding: 10px; border: 1px solid var(--line); }
.ticket-flex { display: flex; gap: 20px; align-items: flex-start; flex-wrap: wrap; margin-top: 8px; }
.ticket-side { flex: 1; min-width: 260px; }

.cam { width: 100%; max-width: 480px; border-radius: 12px; border: 1px solid var(--line); margin-top: 12px; background: #000; }

.sigbadge {
  border-radius: 12px; padding: 15px 18px; font-weight: 800; font-size: 15px; margin: 14px 0;
  border: 1px solid; display: flex; align-items: center; gap: 10px;
}
.sigbadge.ok { background: rgba(94,230,168,.1); border-color: rgba(94,230,168,.55); color: var(--ok); }
.sigbadge.bad { background: rgba(255,93,108,.1); border-color: rgba(255,93,108,.55); color: #ffb3ba; }
.sigbadge .sub { display: block; font-weight: 400; font-size: 12.5px; color: var(--muted); margin-top: 3px; }

.stepper { text-align: center; }
.stepper-meta { margin: 12px 0 6px; font-size: 13px; color: var(--muted); }
.stepper-dots { display: flex; gap: 6px; justify-content: center; margin-bottom: 12px; flex-wrap: wrap; }
.stepper-dots .dot {
  width: 12px; height: 12px; border-radius: 50%; border: 1px solid var(--line);
  background: transparent; cursor: pointer; padding: 0;
}
.stepper-dots .dot.on { background: var(--amber); border-color: var(--amber); }
.stepper-ctrls { display: flex; gap: 8px; justify-content: center; }

.cp-words { display: flex; gap: 8px; flex-wrap: wrap; margin: 10px 0; }
.cp-words span {
  background: var(--ice-dim); border: 1px solid rgba(87,230,201,.45); color: var(--ice);
  font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 15px; font-weight: 700;
  padding: 8px 14px; border-radius: 10px;
}

.checklist { list-style: none; padding: 0; margin: 12px 0 0; }
.checklist li {
  padding: 10px 0 10px 30px; position: relative; font-size: 14px; line-height: 1.6; color: var(--muted);
  border-bottom: 1px dashed var(--line);
}
.checklist li:last-child { border-bottom: none; }
.checklist li::before { content: "✓"; position: absolute; left: 4px; color: var(--ice); font-weight: 800; }
.checklist li strong { color: var(--txt); }
.checklist code { font-size: 12px; }

footer {
  text-align: center; color: var(--muted); font-size: 13px; line-height: 2;
  padding: 34px 20px 46px; border-top: 1px solid var(--line); margin-top: 10px;
}
footer a { color: var(--ice); }
footer .addr {
  background: rgba(87,230,201,.08); border: 1px solid rgba(87,230,201,.3); color: var(--ice);
  font-family: ui-monospace, monospace; font-size: 11.5px; padding: 4px 10px; border-radius: 8px;
  cursor: pointer; word-break: break-all;
}
footer .sig { letter-spacing: .3em; font-size: 10.5px; margin-top: 10px; color: #6d7c98; }

.skip-link {
  position: absolute; left: -999px; top: 0; background: var(--amber); color: #000;
  padding: 8px 14px; z-index: 99; border-radius: 0 0 8px 0; font-weight: 700;
}
.skip-link:focus { left: 0; }

.conn-pill {
  font-size: 12px; font-weight: 700; padding: 6px 12px; border-radius: 999px;
  border: 1px solid var(--line); color: var(--muted); white-space: nowrap;
}
.conn-pill.on { color: var(--ok); border-color: rgba(94,230,168,.5); }
.conn-pill.bad { color: var(--danger); border-color: rgba(255,93,108,.5); }

@media (max-width: 560px) {
  .hero { padding-top: 44px; }
  .card { padding: 18px; }
  .kv { grid-template-columns: 1fr; gap: 2px; }
  .kv dt { margin-top: 8px; }
}

/* a11y 2026-10-01: explicit link color (was browser-default #0000ee, fails on dark bg) */
a,a:visited{color:#ffb02e}