:root {
  --bg: #060910; --bg2: #0a0f1c; --card: #0d1424; --line: #1e2a44; --line2: #2b3a5c;
  --fg: #eef2f9; --muted: #9aa8c2; --dim: #6b7a96;
  --accent: #5f8cff; --accent2: #2f5be0; --steel: #c7d2e4;
  --ok: #3fd18b; --warn: #f2b84b; --bad: #ff5d5d;
  --mono: 'Cascadia Mono', Consolas, 'SFMono-Regular', Menlo, monospace;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  background: var(--bg);
  background-image:
    radial-gradient(70rem 36rem at 10% -10%, rgba(47, 91, 224, .22), transparent 60%),
    linear-gradient(rgba(95, 140, 255, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(95, 140, 255, .04) 1px, transparent 1px);
  background-size: auto, 40px 40px, 40px 40px;
  color: var(--fg); font: 16px/1.55 'Segoe UI', system-ui, -apple-system, Roboto, sans-serif;
}
[hidden] { display: none !important; }
.sprite { display: none; }
.ico { width: 1.25rem; height: 1.25rem; flex: none; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.ico.big { width: 2rem; height: 2rem; }
#i-end path, .round.danger .ico { fill: currentColor; stroke: none; }
.mono { font-family: var(--mono); }
.eyebrow { font-family: var(--mono); font-size: .75rem; letter-spacing: .18em; text-transform: uppercase; color: var(--accent); margin: 0 0 .9rem; }
h1 { font-size: clamp(1.9rem, 1.2rem + 3vw, 3.2rem); line-height: 1.05; letter-spacing: -.02em; margin: 0 0 1.2rem; overflow-wrap: anywhere; }
h2 { font-size: 1.15rem; margin: .9rem 0 .5rem; }
p { margin: 0 0 .8rem; }
a { color: var(--accent); }
.lead { color: var(--muted); font-size: 1.1rem; max-width: 38rem; }
.hint { color: var(--muted); font-size: .92rem; }

.topbar, .foot, main { width: min(76rem, 100% - 2rem); margin-inline: auto; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.1rem 0; }
.brand img { display: block; height: 52px; width: auto; }
.chip { display: inline-flex; align-items: center; gap: .45rem; border: 1px solid var(--line2); border-radius: 2px; padding: .3rem .65rem; font-family: var(--mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); background: rgba(13, 20, 36, .7); white-space: nowrap; }
.chip .ico { width: 1rem; height: 1rem; }
.dot { width: .5rem; height: .5rem; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 3px rgba(63, 209, 139, .18); }

.card { background: linear-gradient(180deg, rgba(17, 27, 50, .92), rgba(10, 15, 28, .92)); border: 1px solid var(--line); border-radius: 4px; padding: 1.5rem; position: relative; }
.card::before { content: ''; position: absolute; left: -1px; top: -1px; width: 18px; height: 18px; border-left: 2px solid var(--accent); border-top: 2px solid var(--accent); }
.card.accent { border-color: var(--accent2); }
.card .ico.big { color: var(--accent); }

.hero { display: grid; grid-template-columns: 1.25fr 1fr; gap: 2.5rem; align-items: center; padding: 3rem 0 2.5rem; }
label { display: block; font-weight: 600; margin-bottom: .4rem; }
input { width: 100%; font: inherit; padding: .7rem .8rem; border: 1px solid var(--line2); border-radius: 3px; background: #070c18; color: var(--fg); }
input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
button, .button { font: inherit; font-weight: 600; padding: .7rem 1.1rem; border-radius: 3px; border: 1px solid var(--line2); background: #101a30; color: var(--fg); cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; justify-content: center; gap: .55rem; }
button:hover, .button:hover { border-color: var(--accent); }
.primary { background: var(--accent2); border-color: var(--accent2); color: #fff; }
.primary:hover { background: var(--accent); }
button:disabled { opacity: .5; cursor: default; }
.create form button { margin-top: .9rem; width: 100%; }
.linkrow { display: flex; gap: .5rem; margin: .5rem 0 .8rem; }
.linkrow input { font-family: var(--mono); font-size: .8rem; }
#open-link { width: 100%; }
.row { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1rem; }
.status { min-height: 1.4em; margin: .8rem 0 0; font-weight: 600; }
.status.ok { color: var(--ok); } .status.warn { color: var(--warn); } .status.bad { color: var(--bad); }

.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.grid3 p { color: var(--muted); }
.nodes { list-style: none; padding: 0; margin: .4rem 0 1rem; display: flex; flex-wrap: wrap; gap: .4rem; }
.nodes li { font-family: var(--mono); font-size: .75rem; letter-spacing: .12em; border: 1px solid var(--line2); padding: .25rem .55rem; border-radius: 2px; color: var(--steel); }
.safeguards { padding: 2.5rem 0; }
.safeguards ul { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 2rem; border-top: 1px solid var(--line); }
.safeguards li { display: flex; gap: .8rem; padding: 1rem 0; border-bottom: 1px solid var(--line); color: var(--muted); font-size: .95rem; }
.safeguards .ico { color: var(--accent); margin-top: .15rem; }
.foot { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 2rem; border-top: 1px solid var(--line); padding: 1.8rem 0 2.5rem; color: var(--dim); font-size: .88rem; }
.foot img { height: 44px; width: auto; }
.foot p { margin: 0; flex: 1; min-width: 14rem; }

.lobby { max-width: 34rem; margin-top: 8vh; }

#call { position: fixed; inset: 0; display: flex; flex-direction: column; background: #03050a; }
.callbar { display: flex; align-items: center; gap: .7rem; padding: .6rem 1rem; border-bottom: 1px solid var(--line); background: var(--bg2); }
.callbar strong { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chip.zone { color: var(--ok); border-color: rgba(63, 209, 139, .45); }
#stage { position: relative; flex: 1; min-height: 0; }
#remote { width: 100%; height: 100%; object-fit: contain; background: #000; }
#local { position: absolute; right: 1rem; top: 1rem; width: min(30vw, 12rem); aspect-ratio: 4 / 3; object-fit: cover; border: 1px solid var(--line2); border-radius: 3px; background: #111; transform: scaleX(-1); }
.placeholder { position: absolute; inset: 0; display: grid; place-content: center; justify-items: center; gap: .6rem; color: var(--muted); }
#bar { display: grid; grid-template-columns: auto 1fr; gap: 1.2rem; align-items: center; padding: .8rem 1rem calc(.9rem + env(safe-area-inset-bottom)); border-top: 1px solid var(--line); background: var(--bg2); }
.controls { display: flex; gap: .6rem; }
.round { width: 3.1rem; height: 3.1rem; padding: 0; border-radius: 50%; }
.round .ico { width: 1.45rem; height: 1.45rem; }
.round[aria-pressed="false"] { background: #3a1820; border-color: #7d2a3a; color: #ffb3b3; }
.round.danger { background: #c62f3c; border-color: #c62f3c; color: #fff; }
.round.danger .ico { transform: rotate(0deg); }
.round.on { border-color: var(--accent); color: var(--accent); }
.guard { display: flex; gap: .8rem; align-items: flex-start; border: 1px solid var(--line2); border-left: 3px solid var(--warn); border-radius: 3px; padding: .6rem .8rem; background: rgba(13, 20, 36, .8); min-width: 0; }
.guard[data-tone="ok"] { border-left-color: var(--ok); }
.guard[data-tone="ok"] #guard-icon { color: var(--ok); }
.guard[data-tone="wait"] #guard-icon { color: var(--warn); }
.guard[data-tone="bad"] { border-left-color: var(--bad); background: rgba(60, 14, 22, .85); }
.guard[data-tone="bad"] #guard-icon { color: var(--bad); }
.guard .status { margin: 0 0 .2rem; }
.guard-text { color: var(--muted); font-size: .82rem; margin: 0; }
.guard-check { color: var(--dim); font-size: .72rem; letter-spacing: .04em; margin: .3rem 0 0; }
.docs { position: absolute; right: 1rem; bottom: 9.5rem; width: min(24rem, calc(100% - 2rem)); z-index: 2; }
.docs-head { display: flex; gap: .5rem; align-items: center; color: var(--ok); }
#doc-list { list-style: none; padding: 0; margin: .8rem 0 0; display: grid; gap: .4rem; font-size: .88rem; }
#doc-list li { display: flex; justify-content: space-between; gap: .6rem; border-top: 1px solid var(--line); padding-top: .4rem; }
#doc-list li span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

@media (max-width: 900px) {
  .hero, .grid3, .safeguards ul { grid-template-columns: 1fr; }
  .hero { padding-top: 1.5rem; }
  .brand img { height: 42px; }
  .topbar .chip { display: none; }
  #bar { grid-template-columns: 1fr; }
  .controls { justify-content: center; }
  .guard-text { font-size: .78rem; }
  .docs { bottom: 14rem; }
}

/* USS network nodes in the call bar: flag + name + live dot (green blinks only for checked, healthy nodes) */
.nodestrip { list-style: none; margin: 0; padding: 0; display: flex; gap: .25rem; overflow-x: auto; scrollbar-width: none; }
.nodestrip::-webkit-scrollbar { display: none; }
.nodestrip li { display: inline-flex; align-items: center; gap: .3rem; padding: .15rem .4rem; border: 1px solid var(--line); border-radius: 2px; font-family: var(--mono); font-size: .6rem; letter-spacing: .08em; text-transform: uppercase; color: var(--dim); white-space: nowrap; }
.nodestrip svg { width: 14px; height: 10px; flex: none; border-radius: 1px; }
.nodestrip i { width: 6px; height: 6px; border-radius: 50%; background: #3a4560; flex: none; }
.nodestrip li.up { color: var(--steel); border-color: rgba(63, 209, 139, .35); }
.nodestrip li.up i { background: var(--ok); animation: blink 1.6s ease-in-out infinite; }
.nodestrip li.down i { background: var(--bad); }
@keyframes blink { 0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(63, 209, 139, .6); } 50% { opacity: .35; box-shadow: 0 0 0 3px rgba(63, 209, 139, 0); } }
@media (prefers-reduced-motion: reduce) { .nodestrip li.up i { animation: none; } }
@media (max-width: 900px) { .callbar { flex-wrap: wrap; } .nodestrip { max-width: 100%; flex-basis: 100%; order: 5; justify-content: space-between; } .nodestrip span { display: none; } .nodestrip li { padding: .2rem .3rem; } }

/* Lobby: room + instructions on the left, network status and intrusion monitoring on the right */
.lobby-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 1.2rem; padding: 2rem 0 2.5rem; align-items: start; }
.lobby-side { display: grid; gap: 1.2rem; }
h2.sub { font-size: .8rem; font-family: var(--mono); letter-spacing: .16em; text-transform: uppercase; color: var(--steel); border-top: 1px solid var(--line); padding-top: 1.4rem; margin-top: 1.6rem; }
.steps { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.steps ol { margin: 0; padding-left: 1.2rem; color: var(--muted); font-size: .92rem; display: grid; gap: .5rem; }
.steps b { color: var(--ok); font-weight: 600; }
.conn { display: inline-flex; align-items: center; gap: .5rem; font-family: var(--mono); font-size: .78rem; letter-spacing: .06em; border: 1px solid var(--line2); border-radius: 2px; padding: .35rem .7rem; color: var(--muted); }
.conn[data-zone="secure"] { color: var(--ok); border-color: rgba(63, 209, 139, .45); }
.small { font-size: .78rem; margin: .8rem 0 0; }
.nodelist { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: .1rem 1rem; }
.nodelist li { display: flex; align-items: center; gap: .55rem; padding: .45rem 0; border-bottom: 1px solid var(--line); font-size: .86rem; color: var(--dim); }
.nodelist li svg { width: 18px; height: 12px; flex: none; border-radius: 1px; }
.nodelist li span { flex: 1; }
.nodelist li small { font-family: var(--mono); font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; }
.nodelist li.up small { color: var(--ok); }
.nodelist li i { width: 8px; height: 8px; border-radius: 50%; background: #3a4560; flex: none; }
.nodelist li.up { color: var(--fg); }
.nodelist li.up i { background: var(--ok); animation: blink 1.6s ease-in-out infinite; }
.nodelist li.down i { background: var(--bad); }
.monitor { list-style: none; margin: 0; padding: 0; display: grid; gap: .9rem; }
.monitor li { display: flex; gap: .7rem; color: var(--muted); font-size: .88rem; }
.monitor .ico { color: var(--accent); margin-top: .1rem; }
.monitor b { color: var(--fg); font-weight: 600; }
@media (prefers-reduced-motion: reduce) { .nodelist li.up i { animation: none; } }
@media (max-width: 900px) { .lobby-grid, .steps { grid-template-columns: 1fr; } }