:root {
  --deep: #0a0e1a;
  --dark: #0f1424;
  --card: #151b2e;
  --text: #e8ecf4;
  --text-2: #a3acc0;   /* lighter than DESIGN.md's #8892a8 for AA on small text */
  --vapor: #38bdf8;
  --vapor-bright: #7dd3fc;
  --amber: #fbbf24;
  --good: #34d399;
  --bad: #f87171;
  --line: rgba(255, 255, 255, 0.08);
  color-scheme: dark;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0; background: var(--deep); color: var(--text);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
.bar { display: flex; justify-content: space-between; align-items: center; padding: 14px 16px; background: var(--dark); border-bottom: 1px solid var(--line); }
.mark { letter-spacing: 0.2em; text-transform: uppercase; font-weight: 600; }
.mark .dot { color: var(--vapor); }
.mark .sub { letter-spacing: 0.04em; text-transform: none; font-weight: 400; color: var(--text-2); margin-left: 6px; }
main { max-width: 640px; margin: 0 auto; padding: 24px 16px 48px; }
main:focus { outline: none; }
h1 { font-size: 1.6rem; line-height: 1.25; font-weight: 600; margin: 8px 0 8px; }
h2 { font-size: 1.1rem; margin: 32px 0 8px; }
a { color: var(--vapor); }
a:hover { color: var(--vapor-bright); }
.muted { color: var(--text-2); }
.small { font-size: 0.875rem; }
.ok { color: var(--good); }
.bad { color: var(--bad); }
.stack { display: flex; flex-direction: column; gap: 8px; }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 16px; margin: 16px 0; }
label { font-weight: 600; }
input, textarea, select {
  font: inherit; color: var(--text); background: var(--deep);
  border: 1px solid #2a3350; border-radius: 6px; padding: 10px 12px; min-height: 44px; width: 100%;
}
textarea { resize: vertical; }
:focus-visible { outline: 2px solid var(--vapor); outline-offset: 2px; }
button, .primary, .secondary { font: inherit; cursor: pointer; min-height: 44px; border-radius: 6px; padding: 10px 16px; text-decoration: none; display: inline-flex; align-items: center; justify-content: center; }
.primary { background: var(--vapor); color: var(--deep); border: 0; font-weight: 600; }
.primary:hover { background: var(--vapor-bright); color: var(--deep); }
.primary:disabled { background: #1e2844; color: var(--text-2); cursor: not-allowed; }
.secondary { background: transparent; color: var(--text); border: 1px solid #2a3350; }
.link { background: none; border: 0; color: var(--vapor); padding: 10px 4px; }
.link.danger { color: var(--bad); }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.file { font-weight: 400; color: var(--vapor); cursor: pointer; display: flex; flex-direction: column; gap: 4px; width: 100%; }
.file input { width: 100%; max-width: 100%; min-height: 0; border: 0; padding: 0; background: none; color: var(--text-2); }
.flash { background: #3a1620; border: 1px solid var(--bad); border-radius: 6px; padding: 10px 12px; }
.pill { font-size: 0.8rem; font-weight: 600; border-radius: 999px; padding: 2px 10px; border: 1px solid currentColor; }
.pill.working { color: var(--vapor); }
.pill.action { color: var(--amber); }
.pill.good { color: var(--good); }
.pill.bad { color: var(--bad); }
.pill.muted { color: var(--text-2); }
.request { white-space: pre-wrap; margin: 12px 0 8px; }
.steps { padding-left: 20px; }
#qr { background: #fff; border-radius: 8px; padding: 8px; }
code { word-break: break-all; }
.history { list-style: none; padding: 0; margin: 0; }
.history li { border-top: 1px solid var(--line); padding: 10px 0; display: flex; justify-content: space-between; gap: 12px; }
.history .text { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.foot { text-align: right; padding: 12px 16px; }
@media (prefers-reduced-motion: no-preference) { .primary { transition: background 0.15s; } }