/* Pearl Node — observatory / mission-control theme.
 * Deep space navy, phosphor-teal data, amber warnings. Distinct identity:
 * this is an operator's console, not a portfolio page. */

:root {
  --bg: #04070f;
  --bg2: #070d1a;
  --panel: #0a1224;
  --panel2: #0d1628;
  --line: #1b2a47;
  --ink: #d7e6f5;
  --dim: #7d93b5;
  --teal: #46f2c0;
  --teal-dim: #1e8f70;
  --amber: #ffb454;
  --red: #ff5f6b;
  --blue: #5aa9ff;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(70, 242, 192, 0.06), transparent 60%),
    radial-gradient(900px 420px at 10% 0%, rgba(90, 169, 255, 0.07), transparent 60%),
    var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  min-height: 100vh;
}

/* starfield dots */
body::before {
  content: "";
  position: fixed; inset: 0;
  background-image:
    radial-gradient(1px 1px at 12% 22%, rgba(215,230,245,.5), transparent),
    radial-gradient(1px 1px at 68% 8%, rgba(215,230,245,.35), transparent),
    radial-gradient(1px 1px at 34% 66%, rgba(215,230,245,.3), transparent),
    radial-gradient(1px 1px at 88% 44%, rgba(215,230,245,.4), transparent),
    radial-gradient(1px 1px at 52% 88%, rgba(215,230,245,.25), transparent),
    radial-gradient(1px 1px at 5% 78%, rgba(215,230,245,.35), transparent);
  pointer-events: none;
  z-index: 0;
}
main, header.hero, footer, aside.limits { position: relative; z-index: 1; }

.hero { padding: 2.2rem 1.2rem 1.2rem; text-align: center; }
.kicker {
  color: var(--teal); letter-spacing: .28em; text-transform: uppercase;
  font-size: .72rem; margin: 0 0 .6rem;
}
.hero h1 { margin: 0; font-size: 2.4rem; letter-spacing: .02em; }
.hero h1 .sat { color: var(--teal); }
.sub { color: var(--dim); max-width: 46rem; margin: .8rem auto 0; line-height: 1.55; }
.sub em { color: var(--ink); font-style: normal; border-bottom: 1px dotted var(--teal-dim); }

.statusbar {
  display: flex; gap: .8rem; align-items: center; justify-content: center;
  margin: 1.1rem auto 0; flex-wrap: wrap;
}
.lamp {
  width: .7rem; height: .7rem; border-radius: 50%;
  background: #3a4a63; box-shadow: 0 0 0 3px rgba(58,74,99,.25);
  display: inline-block;
}
.lamp.ok { background: var(--teal); box-shadow: 0 0 10px var(--teal); animation: pulse 2.4s infinite; }
.lamp.warn { background: var(--amber); box-shadow: 0 0 10px var(--amber); }
.lamp.error { background: var(--red); box-shadow: 0 0 10px var(--red); }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .55; } }
#conn-label { font-family: var(--mono); font-size: .82rem; color: var(--dim); }
#conn-label b { color: var(--ink); font-weight: 600; }

.steps {
  display: flex; gap: .4rem; justify-content: center; flex-wrap: wrap;
  margin-top: 1.2rem;
}
.steps button {
  background: var(--panel); color: var(--dim);
  border: 1px solid var(--line); border-radius: .55rem;
  padding: .55rem .95rem; font-size: .88rem; cursor: pointer;
  font-family: var(--sans);
}
.steps button:hover { color: var(--ink); border-color: var(--teal-dim); }
.steps button.active {
  color: #03130d; background: var(--teal); border-color: var(--teal);
  font-weight: 700;
}

main { max-width: 62rem; margin: 0 auto; padding: 0 1.2rem 3rem; }
.tab { display: none; }
.tab.active { display: block; animation: fadein .25s ease; }
@keyframes fadein { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; } }

.cards {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(13.5rem, 1fr));
  gap: .8rem; margin: 1.2rem 0;
}
.card {
  background: linear-gradient(180deg, var(--panel2), var(--panel));
  border: 1px solid var(--line); border-radius: .8rem;
  padding: .95rem 1.05rem;
}
.card .lbl { font-size: .72rem; text-transform: uppercase; letter-spacing: .14em; color: var(--dim); }
.card .val {
  font-family: var(--mono); font-size: 1.35rem; margin: .35rem 0 .2rem;
  color: var(--teal); word-break: break-all;
}
.card .sub2 { font-size: .8rem; color: var(--dim); }
.card.warn .val { color: var(--amber); }
.card.error .val { color: var(--red); }

.panel {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: .8rem; padding: 1.1rem 1.2rem; margin: 1rem 0;
}
.panel h2 { margin: 0 0 .6rem; font-size: 1.05rem; }
.panel h2 .tag {
  font-size: .68rem; color: var(--teal); border: 1px solid var(--teal-dim);
  border-radius: 1rem; padding: .1rem .55rem; margin-left: .5rem; vertical-align: middle;
  text-transform: uppercase; letter-spacing: .1em;
}
.hint { color: var(--dim); font-size: .86rem; line-height: 1.55; }
.hint code, .mono { font-family: var(--mono); }
code { font-family: var(--mono); background: #0e1830; padding: .1rem .35rem; border-radius: .3rem; font-size: .85em; }

table.peers { width: 100%; border-collapse: collapse; font-size: .84rem; }
table.peers th, table.peers td {
  text-align: left; padding: .5rem .6rem; border-bottom: 1px solid var(--line);
  font-family: var(--mono); white-space: nowrap;
}
table.peers th {
  font-family: var(--sans); font-size: .72rem; text-transform: uppercase;
  letter-spacing: .1em; color: var(--dim); cursor: pointer; user-select: none;
}
table.peers th:hover { color: var(--teal); }
table.peers td.addr { color: var(--blue); }
table.peers tr.sync td { background: rgba(70, 242, 192, .05); }
.badge {
  display: inline-block; font-size: .68rem; padding: .1rem .5rem; border-radius: 1rem;
  border: 1px solid var(--line); color: var(--dim); font-family: var(--sans);
}
.badge.sync { color: var(--teal); border-color: var(--teal-dim); }
.badge.in { color: var(--blue); border-color: #2c5a9e; }
.badge.stale { color: var(--amber); border-color: #8a6224; }

.notes { list-style: none; margin: .6rem 0; padding: 0; }
.notes li {
  padding: .5rem .8rem; border-radius: .5rem; margin: .35rem 0; font-size: .88rem;
  border: 1px solid var(--line); background: var(--bg2);
}
.notes li.ok { border-left: 3px solid var(--teal); }
.notes li.warn { border-left: 3px solid var(--amber); }
.notes li.error { border-left: 3px solid var(--red); }
.notes li.info { border-left: 3px solid var(--blue); }

label { display: block; margin: .7rem 0; font-size: .88rem; }
label .fl { display: block; margin-bottom: .3rem; color: var(--dim); }
input[type=text], input[type=password], input[type=number], select, textarea {
  width: 100%; background: var(--bg2); color: var(--ink);
  border: 1px solid var(--line); border-radius: .5rem;
  padding: .6rem .7rem; font-family: var(--mono); font-size: .88rem;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--teal-dim); }
.row { display: flex; gap: .6rem; flex-wrap: wrap; align-items: center; margin: .8rem 0; }

button {
  background: var(--panel2); color: var(--ink);
  border: 1px solid var(--line); border-radius: .55rem;
  padding: .6rem 1.1rem; font-size: .88rem; cursor: pointer; font-family: var(--sans);
}
button:hover { border-color: var(--teal-dim); }
button.primary { background: var(--teal); border-color: var(--teal); color: #03130d; font-weight: 700; }
button.danger { border-color: #7a2c33; color: var(--red); }
button:disabled { opacity: .45; cursor: default; }

.err { color: var(--red); font-size: .86rem; }
.okmsg { color: var(--teal); font-size: .86rem; }
.summary {
  font-family: var(--mono); font-size: .84rem; background: var(--bg2);
  border: 1px solid var(--line); border-radius: .5rem; padding: .7rem .9rem;
  white-space: pre-wrap; word-break: break-word;
}
.empty {
  border: 1px dashed var(--line); border-radius: .8rem; padding: 2rem 1.2rem;
  text-align: center; color: var(--dim); margin: 1.2rem 0;
}
.empty b { color: var(--ink); }

.limits {
  max-width: 62rem; margin: 0 auto 1.4rem; padding: 0 1.2rem;
}
.limits .box {
  border: 1px solid #8a6224; border-radius: .8rem; padding: .9rem 1.1rem;
  background: rgba(255, 180, 84, .05); font-size: .84rem; color: var(--dim);
}
.limits strong { color: var(--amber); }
.limits ul { margin: .5rem 0 0; padding-left: 1.2rem; }
.limits li { margin: .3rem 0; line-height: 1.5; }
.limits em { color: var(--ink); font-style: normal; }

footer { text-align: center; padding: 2rem 1rem 3rem; color: var(--dim); font-size: .84rem; }
footer a { color: var(--teal); }
footer code { font-size: .78rem; word-break: break-all; }
footer .dim { font-size: .76rem; margin-top: .4rem; }

pre.relay {
  background: #02040a; border: 1px solid var(--line); border-radius: .6rem;
  padding: .9rem 1rem; overflow-x: auto; font-size: .8rem; line-height: 1.6;
  color: #9fd8c2;
}
.kv { display: grid; grid-template-columns: auto 1fr; gap: .35rem .9rem; font-size: .88rem; margin: .6rem 0; }
.kv dt { color: var(--dim); font-family: var(--mono); font-size: .8rem; }
.kv dd { margin: 0; font-family: var(--mono); word-break: break-all; }

@media (max-width: 640px) {
  .hero h1 { font-size: 1.8rem; }
  table.peers { font-size: .74rem; }
  table.peers th:nth-child(n+6), table.peers td:nth-child(n+6) { display: none; }
}

/* 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; }
}