/* Pearl Channels — the switchboard desk.
 * Dark harbor navy, signal-cyan current lines, copper terminals. */
:root {
  --bg: #060b16;
  --bg2: #0a1222;
  --panel: #0d1628;
  --line: #1c2c48;
  --ink: #dfe9f5;
  --dim: #8fa3bd;
  --signal: #39e6c3;   /* current green-cyan */
  --signal-dim: #1a7f6e;
  --copper: #e0995c;   /* terminal copper */
  --amber: #f5c542;
  --red: #ff6b6b;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { background: var(--bg); }
body {
  margin: 0; color: var(--ink);
  font-family: -apple-system, "Segoe UI", Inter, Roboto, sans-serif;
  background:
    radial-gradient(1200px 500px at 15% -5%, rgba(57,230,195,.07), transparent 60%),
    radial-gradient(900px 500px at 90% 0%, rgba(224,153,92,.06), transparent 60%),
    var(--bg);
  min-height: 100vh;
}
.topbar {
  display: flex; flex-wrap: wrap; gap: 1rem; align-items: center;
  justify-content: space-between; padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--line); background: rgba(10,18,34,.85);
  position: sticky; top: 0; z-index: 10; backdrop-filter: blur(6px);
}
.brand { display: flex; gap: .8rem; align-items: center; }
.seal { width: 40px; height: 40px; color: var(--signal); }
.brand h1 { margin: 0; font-size: 1.35rem; letter-spacing: .04em; }
.tagline { margin: .15rem 0 0; color: var(--dim); font-size: .85rem; }
.steps { display: flex; gap: .35rem; flex-wrap: wrap; }
.steps button {
  background: transparent; color: var(--dim); border: 1px solid var(--line);
  border-radius: 999px; padding: .4rem .8rem; cursor: pointer; font-size: .82rem;
}
.steps button.active { color: #04120e; background: var(--signal); border-color: var(--signal); font-weight: 700; }
.steps button:disabled { opacity: .35; cursor: not-allowed; }
.steps button:not(:disabled):hover { border-color: var(--signal); color: var(--signal); }
.steps button.active:hover { color: #04120e; }
main { max-width: 1020px; margin: 0 auto; padding: 1.5rem 1rem 3rem; }
.panel {
  display: none; background: linear-gradient(180deg, var(--panel), var(--bg2));
  border: 1px solid var(--line); border-radius: 14px; padding: 1.5rem;
  box-shadow: 0 12px 40px rgba(0,0,0,.45);
}
.panel.active { display: block; animation: fadein .25s ease; }
@keyframes fadein { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; } }
h2 { margin-top: 0; letter-spacing: .02em; }
h3 { color: var(--signal); margin-top: 1.6rem; }
h4 { color: var(--copper); }
.lede { color: var(--dim); line-height: 1.55; max-width: 70ch; }
.lede strong, p strong { color: var(--ink); }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: .9rem; margin: 1rem 0; }
label { display: flex; flex-direction: column; gap: .3rem; font-size: .9rem; }
label.inline { flex-direction: row; align-items: center; gap: .5rem; }
label.check { flex-direction: row; align-items: flex-start; gap: .5rem; font-weight: 400; margin: .8rem 0; cursor: pointer; }
label.check input { width: auto; margin-top: .2rem; }
.hint { color: var(--dim); font-size: .75rem; font-weight: normal; }
input, select, textarea {
  background: #070d18; border: 1px solid var(--line); color: var(--ink);
  border-radius: 8px; padding: .55rem .7rem; font-size: .92rem; width: 100%;
  font-family: inherit;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--signal); box-shadow: 0 0 0 2px rgba(57,230,195,.15); }
textarea { font-family: var(--mono); font-size: .8rem; }
code { font-family: var(--mono); font-size: .82rem; color: var(--signal); word-break: break-all; }
code.addr { font-size: .78rem; }
.row { display: flex; gap: .6rem; flex-wrap: wrap; align-items: center; margin: .8rem 0; }
button {
  border-radius: 8px; padding: .55rem 1rem; font-size: .9rem; cursor: pointer;
  border: 1px solid var(--line); background: #101b30; color: var(--ink);
}
button.primary { background: var(--signal); border-color: var(--signal); color: #04120e; font-weight: 700; }
button.primary:hover { filter: brightness(1.08); }
button.ghost { background: transparent; }
button.ghost:hover { border-color: var(--signal); color: var(--signal); }
button:disabled { opacity: .4; cursor: not-allowed; }
.filebtn { cursor: pointer; display: inline-block; padding: .55rem 1rem; }
.error {
  background: rgba(255,107,107,.1); border: 1px solid var(--red); color: #ffb3b3;
  border-radius: 8px; padding: .7rem 1rem; margin: .8rem 0; white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.note {
  background: rgba(245,197,66,.07); border: 1px solid rgba(245,197,66,.35);
  border-radius: 8px; padding: .7rem 1rem; margin: .8rem 0; color: var(--dim);
  font-size: .88rem; line-height: 1.5; overflow-wrap: anywhere;
}
.kv { display: grid; gap: .5rem; margin: 1rem 0; }
.kv > div { display: grid; grid-template-columns: 200px 1fr; gap: .8rem; padding: .45rem 0; border-bottom: 1px dashed var(--line); }
.kv dt { color: var(--dim); font-size: .85rem; }
.kv dd { margin: 0; font-size: .9rem; }
details { margin: .8rem 0; border: 1px solid var(--line); border-radius: 8px; padding: .6rem .9rem; }
summary { cursor: pointer; color: var(--copper); }
pre.asm, pre.json {
  background: #05090f; border: 1px solid var(--line); border-radius: 8px;
  padding: .8rem; overflow-x: auto; font-family: var(--mono); font-size: .75rem;
  color: var(--signal); white-space: pre-wrap; word-break: break-all;
}
.statecard { border: 1px solid var(--signal-dim); border-radius: 12px; padding: 1rem; margin: 1rem 0; background: rgba(57,230,195,.04); }
.statehead { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: .6rem; }
.fp { font-family: var(--mono); font-size: .78rem; color: var(--dim); }
.splitbar { display: flex; height: 26px; border-radius: 13px; overflow: hidden; border: 1px solid var(--line); }
.splitbar div { transition: width .4s ease; }
#state-minebar { background: linear-gradient(90deg, var(--signal-dim), var(--signal)); }
#state-peerbar { background: linear-gradient(90deg, #7a4a1e, var(--copper)); }
.splitlabels { display: flex; justify-content: space-between; font-size: .85rem; margin-top: .35rem; color: var(--dim); }
.sigstatus { font-size: .85rem; color: var(--dim); margin-top: .5rem; }
.sigstatus .ok { color: var(--signal); }
.sigstatus .no { color: var(--amber); }
.closegrid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1rem; }
.closecard { border: 1px solid var(--line); border-radius: 12px; padding: 1rem; background: rgba(7,13,24,.6); }
.history { display: grid; gap: .5rem; }
.history .hrow {
  display: flex; justify-content: space-between; gap: .8rem; font-size: .85rem;
  border: 1px solid var(--line); border-radius: 8px; padding: .5rem .8rem; color: var(--dim);
}
.history .hrow.active { border-color: var(--signal); color: var(--ink); }
.history .hrow.revoked { opacity: .55; }
.limits {
  margin-top: 2rem; border: 1px solid rgba(224,153,92,.4); border-radius: 12px;
  padding: 1rem 1.3rem; background: rgba(224,153,92,.05);
}
.limits h3 { color: var(--copper); margin-top: 0; }
.limits ul { margin: 0; padding-left: 1.2rem; color: var(--dim); font-size: .88rem; line-height: 1.6; }
.limits a, .note a { color: var(--signal); }
.checklist { list-style: none; padding: 0; }
.checklist li { padding: .3rem 0 .3rem 1.6rem; position: relative; font-size: .88rem; }
.checklist li::before { content: "✓"; position: absolute; left: 0; color: var(--signal); }
.checklist.bad li::before { content: "✗"; color: var(--red); }
#verify-verdict.proven { color: var(--signal); }
#verify-verdict.notproven { color: var(--red); }
footer {
  border-top: 1px solid var(--line); padding: 1.5rem; text-align: center;
  color: var(--dim); font-size: .85rem;
}
footer a { color: var(--signal); }
.donate { margin-top: .5rem; }
.donate code { color: var(--copper); }
@media (max-width: 640px) {
  .kv > div { grid-template-columns: 1fr; }
  .topbar { padding: .8rem; }
}

/* 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; }
}