/* One accent colour, light and dark, mobile first with 16px gutters. No external requests. */
:root {
  --bg: #fafaf8; --surface: #ffffff; --text: #1d1f23; --muted: #5d636d; --line: #dcdfe4;
  --accent: #1f5fd1; --accent-text: #ffffff; --warn-bg: #fff3d6; --warn-text: #5a3f00; --danger: #b3261e; --ok: #1d6b3a;
  --radius: 10px; --gutter: 16px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a; --surface: #1d2025; --text: #eceef1; --muted: #a2a8b2; --line: #343944;
    --accent: #6c9bff; --accent-text: #0b1220; --warn-bg: #3a2f10; --warn-text: #ffe2a0; --danger: #ff8a80; --ok: #7bd69b;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; min-height: 100vh; display: flex; flex-direction: column; }
[hidden] { display: none !important; }
.wrap { width: 100%; max-width: 760px; margin: 0 auto; padding: var(--gutter); flex: 1; }
.wrap.narrow { max-width: 480px; }
.bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px var(--gutter); border-bottom: 1px solid var(--line); background: var(--surface); }
.brand { font-weight: 650; overflow-wrap: anywhere; }
h1 { font-size: 1.5rem; line-height: 1.25; margin: 8px 0 8px; }
h2 { font-size: 1.15rem; margin: 20px 0 8px; }
.sub, .help, .hint { color: var(--muted); }
.hint { font-size: .875rem; margin: 4px 0 0; }
label { display: block; font-weight: 600; margin: 14px 0 6px; }
input, select, textarea { width: 100%; min-height: 44px; padding: 10px 12px; font: inherit; color: var(--text); background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
textarea { min-height: 110px; resize: vertical; }
input[type="checkbox"] { width: 22px; min-height: 22px; height: 22px; accent-color: var(--accent); }
#code { font-size: 1.25rem; letter-spacing: .08em; text-transform: uppercase; text-align: center; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
button, .btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 44px; padding: 10px 16px; font: inherit; font-weight: 600; color: var(--text); background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); cursor: pointer; text-decoration: none; }
button.primary, .btn.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); width: 100%; margin-top: 16px; }
button.inline { width: auto; margin-top: 0; }
button.danger { color: var(--danger); }
button:disabled { opacity: .55; cursor: not-allowed; }
a { color: var(--accent); }
.msg { margin: 10px 0 0; color: var(--danger); }
.msg.ok { color: var(--ok); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: var(--gutter); margin: 12px 0; }
.banner { background: var(--warn-bg); color: var(--warn-text); border-radius: var(--radius); padding: 12px var(--gutter); margin: 12px 0; }
.strip { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; justify-content: space-between; margin: 12px 0; color: var(--muted); }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin: 0 calc(var(--gutter) * -1); padding: 0 var(--gutter); overflow-x: auto; }
.tabs button { border: 0; border-bottom: 3px solid transparent; border-radius: 0; background: none; }
.tabs button[aria-selected="true"] { border-bottom-color: var(--accent); color: var(--accent); }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.row > * { flex: 0 0 auto; }
.grow { flex: 1 1 160px !important; }
.bigcode { font: 700 1.9rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .06em; text-align: center; padding: 14px 0; overflow-wrap: anywhere; }
.chip { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: .8125rem; font-weight: 600; border: 1px solid var(--line); }
.chip.issued { color: var(--accent); } .chip.submitted { color: var(--ok); } .chip.revoked, .chip.expired { color: var(--muted); }
.ledger { list-style: none; margin: 0; padding: 0; }
.ledger li { border-top: 1px solid var(--line); padding: 12px 0; display: grid; gap: 4px; }
.ledger .top { display: flex; justify-content: space-between; gap: 8px; flex-wrap: wrap; align-items: center; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.prod { border-top: 1px solid var(--line); padding: 14px 0; }
.prod:first-of-type { border-top: 0; }
.meter { height: 10px; background: var(--line); border-radius: 999px; overflow: hidden; }
.meter > span { display: block; height: 100%; background: var(--accent); }
.foot { padding: 16px var(--gutter); text-align: center; color: var(--muted); font-size: .875rem; border-top: 1px solid var(--line); }
dl.facts { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; margin: 12px 0; }
dl.facts dt { color: var(--muted); } dl.facts dd { margin: 0; font-weight: 600; overflow-wrap: anywhere; }
@media (min-width: 640px) { h1 { font-size: 1.75rem; } }
@media (prefers-reduced-motion: no-preference) { button { transition: background-color .15s; } }