/* Pearl Pulse — "bioluminescent abyss" identity.
   Deep-sea dark with phosphor-teal glow. Distinct from Token Studio (lavender),
   Pearl Pay (mint), Pearl Vault (sapphire→silver), Pearl Bazaar (rose/gold). */
:root {
  --bg: #02090d;
  --bg2: #04141b;
  --panel: #071e26;
  --panel2: #0a2731;
  --line: #123843;
  --teal: #3ef0c8;
  --teal-dim: #329b82;
  --cyan: #57d9ff;
  --ink: #e8f7f2;
  --muted: #8fb0a8;
  --warn: #ffb454;
  --bad: #ff6b6b;
  --good: #3ef0c8;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { color-scheme: dark; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.55;
}
.abyss {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(1100px 500px at 15% -5%, rgba(62,240,200,.08), transparent 60%),
    radial-gradient(900px 600px at 90% 10%, rgba(87,217,255,.07), transparent 60%),
    radial-gradient(700px 900px at 50% 110%, rgba(27,143,116,.10), transparent 60%),
    var(--bg);
}
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 20px; }

/* top bar */
.topbar { border-bottom: 1px solid var(--line); background: rgba(2,9,13,.75); backdrop-filter: blur(8px); position: sticky; top: 0; z-index: 10; }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; padding-top: 14px; padding-bottom: 14px; gap: 16px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 14px; }
.brand-mark { font-size: 34px; color: var(--teal); text-shadow: 0 0 18px rgba(62,240,200,.65); }
.brand h1 { margin: 0; font-size: 24px; letter-spacing: .5px; }
.tagline { margin: 2px 0 0; color: var(--muted); font-size: 13px; }
.topnav a { color: var(--muted); text-decoration: none; margin-left: 18px; font-size: 14px; }
.topnav a:hover { color: var(--teal); }

/* alerts */
.alerts { display: grid; gap: 8px; margin: 18px 0 0; }
.alert { padding: 10px 14px; border-radius: 10px; font-size: 14px; border: 1px solid; }
.alert.warn { background: rgba(255,180,84,.08); border-color: rgba(255,180,84,.4); color: #ffd9a3; }
.alert.bad { background: rgba(255,107,107,.08); border-color: rgba(255,107,107,.4); color: #ffc2c2; }
.alert.info { background: rgba(87,217,255,.08); border-color: rgba(87,217,255,.35); color: #c5ecff; }

/* cards */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; margin: 18px 0 26px; }
.card { background: linear-gradient(180deg, var(--panel), var(--bg2)); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px; }
.card.glow { border-color: rgba(62,240,200,.45); box-shadow: 0 0 28px rgba(62,240,200,.10), inset 0 0 40px rgba(62,240,200,.03); }
.card-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 6px; }
.card-head h2 { margin: 0; font-size: 15px; text-transform: uppercase; letter-spacing: 1.5px; color: var(--muted); font-weight: 600; }
.src { font-size: 12px; color: var(--teal-dim); font-family: var(--mono); }
.big-num { font-size: 34px; font-weight: 700; font-family: var(--mono); letter-spacing: -.5px; margin: 4px 0 2px; }
.big-sub { color: var(--muted); font-family: var(--mono); font-size: 16px; margin-bottom: 10px; }
.big-sub .up { color: var(--good); } .big-sub .down { color: var(--bad); }
.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 0; }
.stat-grid div { background: rgba(2,9,13,.5); border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; }
.stat-grid dt { font-size: 11px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); }
.stat-grid dd { margin: 2px 0 0; font-family: var(--mono); font-size: 15px; }
.fetched { color: var(--muted); font-size: 12px; margin: 10px 0 0; font-family: var(--mono); }
.err { color: var(--bad); font-size: 13px; }
.hidden { display: none !important; }

/* panels */
.panel { background: linear-gradient(180deg, var(--panel), var(--bg2)); border: 1px solid var(--line); border-radius: 14px; padding: 20px; margin: 0 0 22px; }
.panel-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
.panel-head h2 { margin: 0; font-size: 18px; }
.panel-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.panel a { color: var(--cyan); }

/* buttons + inputs */
.btn { background: var(--panel2); color: var(--ink); border: 1px solid var(--line); border-radius: 9px; padding: 9px 16px; font-size: 14px; cursor: pointer; text-decoration: none; display: inline-block; }
.btn:hover { border-color: var(--teal-dim); color: var(--teal); }
.btn.primary { background: linear-gradient(180deg, #0e5f4e, #093f34); border-color: var(--teal-dim); color: #d9fff4; }
.btn.primary:hover { box-shadow: 0 0 14px rgba(62,240,200,.35); color: #fff; }
.btn.danger { border-color: rgba(255,107,107,.5); color: #ffb3b3; }
.btn.danger:hover { background: rgba(255,107,107,.12); color: #fff; }
.add-row { display: flex; gap: 10px; flex-wrap: wrap; margin: 10px 0 4px; }
input[type="text"], input[type="url"], input[type="number"], select {
  background: #020d12; border: 1px solid var(--line); color: var(--ink);
  border-radius: 9px; padding: 10px 12px; font-size: 14px; font-family: var(--mono);
}
input:focus { outline: none; border-color: var(--teal-dim); box-shadow: 0 0 0 2px rgba(62,240,200,.15); }
#addr-input { flex: 2 1 300px; }
#label-input { flex: 1 1 160px; }

/* tables */
.table-scroll { overflow-x: auto; margin-top: 8px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; font-size: 11px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); padding: 10px 8px; border-bottom: 1px solid var(--line); white-space: nowrap; }
td { padding: 10px 8px; border-bottom: 1px solid rgba(18,56,67,.6); font-family: var(--mono); vertical-align: middle; }
tbody tr:hover td { background: rgba(62,240,200,.03); }
.empty-row td { text-align: center; color: var(--muted); font-family: system-ui, sans-serif; }
.num { text-align: right; }
.addr-cell { max-width: 240px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.addr-cell .lbl { display: block; font-family: system-ui, sans-serif; font-size: 12px; color: var(--muted); }
.row-actions { white-space: nowrap; }
.link-btn { background: none; border: none; color: var(--cyan); cursor: pointer; font-size: 13px; padding: 2px 6px; font-family: var(--mono); }
.link-btn:hover { color: var(--teal); text-decoration: underline; }
.dir { display: inline-block; padding: 2px 10px; border-radius: 20px; font-size: 12px; font-family: system-ui, sans-serif; }
.dir.received { background: rgba(62,240,200,.12); color: var(--teal); border: 1px solid rgba(62,240,200,.4); }
.dir.sent { background: rgba(255,180,84,.12); color: var(--warn); border: 1px solid rgba(255,180,84,.4); }
.dir.moved { background: rgba(87,217,255,.10); color: var(--cyan); border: 1px solid rgba(87,217,255,.4); }
.dir.unknown { background: rgba(143,176,168,.10); color: var(--muted); border: 1px solid var(--line); }
.demo-tag { font-size: 11px; color: var(--warn); border: 1px solid rgba(255,180,84,.5); border-radius: 6px; padding: 1px 7px; margin-left: 8px; font-family: system-ui, sans-serif; }

/* settings */
.settings-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; margin-bottom: 14px; }
.settings-grid label { display: grid; gap: 6px; font-size: 13px; color: var(--muted); }
.settings-grid label.check { display: flex; align-items: center; gap: 8px; }
.settings-grid input { width: 100%; }
.settings-grid select { width: 100%; min-width: 0; } /* long option text must not force the track wider than the screen */
.settings-grid label { min-width: 0; } /* let grid tracks shrink on small screens */
input[type="checkbox"] { width: 18px; height: 18px; accent-color: var(--teal); }

/* footer */
.footer { border-top: 1px solid var(--line); margin-top: 30px; padding: 22px 0 40px; color: var(--muted); font-size: 14px; }
.footer-inner { display: grid; gap: 8px; }
.footer a { color: var(--cyan); }
.donate code { font-size: 12px; word-break: break-all; color: var(--ink); }

@media (max-width: 640px) {
  .big-num { font-size: 26px; }
  .topnav a { margin-left: 12px; }
}

/* Keyboard focus: a visible ring in this app's accent on every interactive element (fleet focus-visible pass). */
:focus-visible { outline: 2px solid var(--teal); 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(--teal); border-radius: 8px; background: #0b0e14; color: var(--teal); 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): native checkboxes/radios measured 13-18px in the fleet probe — size them to the 24px minimum. */
input[type="checkbox"], input[type="radio"] { width: 24px; height: 24px; flex: none; }