/* Pearl Sign — "signal forge" identity.
 * Onyx black + signal mint on pearl white. Monospace for all wire data.
 * Distinct within the Pearl brand family (Vault: deep navy/sapphire;
 * Rig: ember amber; Bazaar: rose/gold; Foundry: industrial). */
:root {
  --bg: #0a0c0d;
  --bg2: #101415;
  --panel: #131818;
  --line: #232b2a;
  --ink: #eef4f2;
  --muted: #93a3a0;
  --mint: #5df2c4;
  --mint-dim: #2b7a63;
  --amber: #ffc857;
  --red: #ff6b6b;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: -apple-system, "Segoe UI", Inter, Roboto, sans-serif;
  line-height: 1.55;
}
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.muted { color: var(--muted); }
.small { font-size: 0.82rem; }
code { font-family: var(--mono); font-size: 0.88em; color: var(--mint); }

/* top bar */
.topbar { border-bottom: 1px solid var(--line); background: rgba(10,12,13,.9); position: sticky; top: 0; z-index: 10; }
.topbar-in { display: flex; align-items: center; justify-content: space-between; padding-top: 12px; padding-bottom: 12px; }
.brand { display: flex; align-items: baseline; gap: 10px; text-decoration: none; color: var(--ink); }
.pearl-glyph { color: var(--mint); font-size: 1.5rem; line-height: 1; text-shadow: 0 0 14px rgba(93,242,196,.7); }
.brand-name { font-weight: 800; font-size: 1.25rem; letter-spacing: .02em; }
.brand-tag { color: var(--muted); font-size: 0.85rem; }
.topnav { display: flex; gap: 16px; align-items: center; }
.topnav a { color: var(--muted); text-decoration: none; font-size: 0.9rem; }
.topnav a:hover { color: var(--mint); }
.net-badge {
  font-family: var(--mono); font-size: 0.75rem; color: var(--mint);
  border: 1px solid var(--mint-dim); border-radius: 999px; padding: 3px 12px;
  background: rgba(93,242,196,.06);
}
.net-badge.testnet { color: var(--amber); border-color: #7a5f2b; background: rgba(255,200,87,.06); }

/* hero */
.hero { padding: 44px 0 8px; }
.hero h1 { font-size: 2.2rem; line-height: 1.15; margin: 0 0 12px; letter-spacing: -0.01em; }
.hero h1 .accent { color: var(--mint); }
.lede { color: var(--muted); max-width: 70ch; font-size: 1.02rem; }
.airgap-note {
  margin-top: 18px; border: 1px solid var(--mint-dim); border-left: 4px solid var(--mint);
  background: rgba(93,242,196,.05); border-radius: 8px; padding: 14px 18px; max-width: 70ch;
}
.airgap-note strong { color: var(--mint); }

/* step wizard */
.steps { list-style: none; display: flex; gap: 6px; padding: 26px 0 6px; margin: 0; flex-wrap: wrap; }
.steps li {
  flex: 1 1 0; min-width: 120px; padding: 10px 12px; border: 1px solid var(--line);
  border-radius: 10px; background: var(--bg2); color: var(--muted); cursor: pointer;
  display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 0.92rem;
}
.steps li .n {
  width: 26px; height: 26px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center;
  background: var(--panel); border: 1px solid var(--line); font-size: 0.8rem; font-family: var(--mono);
}
.steps li.active { border-color: var(--mint); color: var(--ink); background: rgba(93,242,196,.06); }
.steps li.active .n { background: var(--mint); color: #06110d; border-color: var(--mint); font-weight: 800; }
.steps li.done { color: var(--mint); }
.steps li.done .n { border-color: var(--mint); color: var(--mint); }

/* panels */
.panel {
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
  padding: 26px 28px; margin: 18px 0;
}
.panel h2 { margin: 0 0 6px; font-size: 1.3rem; }
.panel h3 { margin: 22px 0 8px; font-size: 1.05rem; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
@media (max-width: 760px) { .grid2 { grid-template-columns: 1fr; } }
@media (max-width: 720px) {
  .topbar-in { flex-wrap: wrap; gap: 6px 14px; }
  .brand-tag { display: none; }
  .topnav { flex-wrap: wrap; }
}

label { display: block; margin: 12px 0; font-size: 0.9rem; font-weight: 600; }
input, select, textarea {
  width: 100%; margin-top: 6px; padding: 10px 12px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--bg2); color: var(--ink);
  font-size: 0.92rem; font-family: inherit;
}
textarea { font-family: var(--mono); font-size: 0.82rem; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--mint); }
.row { display: flex; gap: 10px; margin: 12px 0; flex-wrap: wrap; align-items: center; }
.row input, .row select { width: auto; flex: 1 1 160px; margin-top: 0; }

.btn {
  background: var(--bg2); color: var(--ink); border: 1px solid var(--line);
  border-radius: 8px; padding: 10px 18px; font-size: 0.9rem; font-weight: 600;
  cursor: pointer; transition: border-color .15s, transform .05s;
}
.btn:hover { border-color: var(--mint); }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--mint); border-color: var(--mint); color: #06110d; font-weight: 800; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.small { padding: 6px 12px; font-size: 0.8rem; }

.msg { border-radius: 8px; padding: 12px 16px; margin: 12px 0; font-size: 0.9rem; }
.msg.ok { background: rgba(93,242,196,.08); border: 1px solid var(--mint-dim); color: var(--mint); }
.msg.err { background: rgba(255,107,107,.08); border: 1px solid #7a2b2b; color: var(--red); }
.msg.warn { background: rgba(255,200,87,.07); border: 1px solid #7a5f2b; color: var(--amber); }
.warn { color: var(--amber); font-size: 0.88rem; }

.tabs { display: flex; gap: 8px; margin: 12px 0; }
.tab { background: none; border: 1px solid var(--line); color: var(--muted); border-radius: 8px; padding: 8px 16px; cursor: pointer; font-weight: 600; }
.tab.active { color: var(--mint); border-color: var(--mint); }

.addr-list { display: flex; flex-direction: column; gap: 8px; }
.addr-row {
  display: flex; gap: 10px; align-items: center; padding: 10px 12px;
  border: 1px solid var(--line); border-radius: 8px; background: var(--bg2);
  font-family: var(--mono); font-size: 0.78rem; word-break: break-all;
}
.addr-row.sel { border-color: var(--mint); background: rgba(93,242,196,.05); }
.addr-row .idx { color: var(--muted); flex: 0 0 44px; }
.addr-row button { margin-left: auto; flex: 0 0 auto; }

.utxo-table { width: 100%; border-collapse: collapse; margin: 14px 0; font-size: 0.85rem; }
.utxo-table th, .utxo-table td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); }
.utxo-table th { color: var(--muted); font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: .05em; }
.utxo-table td.mono { font-family: var(--mono); font-size: 0.75rem; word-break: break-all; }
.utxo-table .r { text-align: right; }
.total-line { font-size: 1rem; }

.fee-card { border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; background: var(--bg2); align-self: start; }
.fee-row { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px dashed var(--line); font-size: 0.9rem; }
.fee-row:last-child { border-bottom: none; }
.fee-row span { color: var(--muted); }
.fee-row strong { font-family: var(--mono); }
.fee-row.total strong { color: var(--mint); }

.hexbox { font-family: var(--mono); font-size: 0.72rem; line-height: 1.5; word-break: break-all; }
.decoded { font-family: var(--mono); font-size: 0.75rem; background: var(--bg2); border: 1px solid var(--line); border-radius: 8px; padding: 14px; overflow-x: auto; white-space: pre-wrap; word-break: break-all; }
details { margin: 12px 0; }
summary { cursor: pointer; color: var(--mint); font-weight: 600; font-size: 0.9rem; }

.sig-results { display: flex; flex-direction: column; gap: 8px; margin: 12px 0; }
.sig-row { display: flex; gap: 10px; align-items: center; padding: 10px 14px; border-radius: 8px; border: 1px solid var(--line); font-size: 0.88rem; }
.sig-row.ok { border-color: var(--mint-dim); background: rgba(93,242,196,.05); }
.sig-row.bad { border-color: #7a2b2b; background: rgba(255,107,107,.06); }
.sig-row .tick { font-weight: 800; }
.sig-row.ok .tick { color: var(--mint); }
.sig-row.bad .tick { color: var(--red); }

.pill { font-size: 0.72rem; border-radius: 999px; padding: 3px 10px; font-weight: 700; vertical-align: middle; }
.pill.ok { background: rgba(93,242,196,.12); color: var(--mint); border: 1px solid var(--mint-dim); }
.pill.bad { background: rgba(255,107,107,.12); color: var(--red); border: 1px solid #7a2b2b; }

.recipient { display: grid; grid-template-columns: 1fr 180px 40px; gap: 8px; margin: 8px 0; align-items: center; }
.recipient input { margin-top: 0; }

.limits ul { color: var(--muted); font-size: 0.92rem; padding-left: 20px; }
.limits li { margin: 6px 0; }

.footer { border-top: 1px solid var(--line); margin-top: 40px; padding: 26px 0 40px; color: var(--muted); font-size: 0.88rem; }
.footer a { color: var(--mint); }
.footer-in { display: flex; flex-direction: column; gap: 8px; }
.donate code { color: var(--ink); word-break: break-all; }
.txid { word-break: break-all; color: var(--mint); }

/* Keyboard focus: a visible ring in this app's accent on every interactive element (fleet focus-visible pass). */
:focus-visible { outline: 2px solid var(--amber); outline-offset: 2px; }

/* Skip link: the first Tab stop on the page — parked off-screen until keyboard focus reveals it (fleet skip-link pass). */
.skip-link { position: absolute; left: 12px; top: -64px; z-index: 1000; padding: 10px 16px; border: 2px solid var(--amber); border-radius: 8px; background: #0b0e14; color: var(--amber); font-weight: 700; text-decoration: none; transition: top .15s ease; }
.skip-link:focus-visible { top: 12px; }
main:focus { outline: none; }

/* Reduced motion: when the OS asks for reduced motion, animations and transitions finish near-instantly and scrolling is not smoothed (fleet reduced-motion pass). Near-zero durations — not animation: none — so fade-ins still land on their end state and no content can be stranded invisible. */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}

/* Touch targets (fleet WCAG 2.5.8 pass): standalone nav links measured 22-24px tall in the fleet probe — pad them past the 24px minimum. */
.topnav a { padding: 4px 6px; }