/* =============================================================
   ARGUS · node design system  (vendored, CSP-safe, offline)
   Fonts vendored locally (latin subset), no external CDN.
   Space Grotesk (display/UI) + IBM Plex Mono (chrome/data)
   ============================================================= */
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:400;font-display:swap;src:url("fonts/ibmplexmono-400.woff2") format('woff2');}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:500;font-display:swap;src:url("fonts/ibmplexmono-500.woff2") format('woff2');}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:600;font-display:swap;src:url("fonts/ibmplexmono-600.woff2") format('woff2');}
@font-face{font-family:'Space Grotesk';font-style:normal;font-weight:400;font-display:swap;src:url("fonts/spacegrotesk.woff2") format('woff2');}
@font-face{font-family:'Space Grotesk';font-style:normal;font-weight:500;font-display:swap;src:url("fonts/spacegrotesk.woff2") format('woff2');}
@font-face{font-family:'Space Grotesk';font-style:normal;font-weight:600;font-display:swap;src:url("fonts/spacegrotesk.woff2") format('woff2');}
@font-face{font-family:'Space Grotesk';font-style:normal;font-weight:700;font-display:swap;src:url("fonts/spacegrotesk.woff2") format('woff2');}

/* =============================================================
   ARGUS · DEFENSE NETWORK, standardized node design system
   Shared across every node page. Theme via data-node + --accent.
   Type: Space Grotesk (display) + IBM Plex Mono (chrome/data)
   ============================================================= */

:root {
  /* tactical base (from Argus_2026 deck) */
  --bg:        oklch(0.145 0.008 240);
  --bg-2:      oklch(0.185 0.010 240);
  --bg-3:      oklch(0.22 0.012 240);
  --line:      oklch(0.32 0.012 240);
  --line-soft: oklch(0.24 0.010 240);
  --fg:        oklch(0.96 0.010 85);
  --fg-2:      oklch(0.82 0.012 85);
  --mid:       oklch(0.62 0.010 240);
  --dim:       oklch(0.48 0.010 240);

  /* default accent (amber, parent). Each node overrides --accent / --accent-2 / --accent-h */
  --accent:    oklch(0.78 0.165 60);
  --accent-2:  oklch(0.65 0.18 25);
  --accent-h:  60;                       /* hue, for glows */
  --accent-glow: oklch(0.78 0.165 var(--accent-h) / 0.32);
  --accent-soft: oklch(0.78 0.165 var(--accent-h) / 0.14);

  --gutter-x: clamp(20px, 4vw, 60px);
  --gutter-y: clamp(14px, 1.6vw, 20px);
  --bracket-pad: clamp(14px, 2vw, 26px);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { background: var(--bg); }
body {
  min-height: 100vh; min-height: 100dvh;
  background: var(--bg); color: var(--fg);
  font-family: "Space Grotesk", system-ui, sans-serif; font-weight: 400;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  overflow-x: hidden; position: relative;
  display: flex; flex-direction: column;
}
.mono { font-family: "IBM Plex Mono", ui-monospace, monospace; letter-spacing: 0.04em; }
a { color: inherit; }
::selection { background: var(--accent); color: var(--bg); }

/* ============================ ATMOSPHERE ============================ */
.bg { position: fixed; inset: 0; pointer-events: none; z-index: 0; overflow: hidden; }

/* drifting masked grid */
.bg-grid {
  position: absolute; inset: -10%;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 76px 76px;
  opacity: 0.16;
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 62% 48%, black 12%, transparent 76%);
  mask-image: radial-gradient(ellipse 80% 70% at 62% 48%, black 12%, transparent 76%);
  animation: gridDrift 60s linear infinite;
}
@keyframes gridDrift { to { transform: translate3d(-76px, -76px, 0); } }

/* warm/cool radial floor glow keyed to accent */
.bg-glow {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 68% 62%, var(--accent-glow), transparent 70%),
    radial-gradient(ellipse 90% 60% at 20% 0%, oklch(0.2 0.012 240 / 0.6), transparent 65%);
}

/* fine scanlines */
.bg-scan {
  position: absolute; inset: 0;
  background: repeating-linear-gradient(to bottom, transparent 0 3px, oklch(1 0 0 / 0.014) 3px 4px);
}

/* periodic full-screen scan sweep */
.bg-sweep {
  position: absolute; left: 0; right: 0; height: 38vh; top: -40vh;
  background: linear-gradient(to bottom, transparent, var(--accent-soft) 60%, transparent);
  opacity: 0.6;
  animation: screenSweep 9s var(--ease) infinite;
}
@keyframes screenSweep {
  0%   { transform: translateY(0); opacity: 0; }
  8%   { opacity: 0.55; }
  60%  { opacity: 0.35; }
  72%  { transform: translateY(150vh); opacity: 0; }
  100% { transform: translateY(150vh); opacity: 0; }
}

/* drifting data motes */
.bg-motes { position: absolute; inset: 0; }
.mote {
  position: absolute; width: 2px; height: 2px; border-radius: 50%;
  background: var(--accent); opacity: 0.5;
  box-shadow: 0 0 6px var(--accent);
  animation: moteRise linear infinite;
}
@keyframes moteRise {
  0%   { transform: translateY(20px); opacity: 0; }
  10%  { opacity: 0.6; }
  90%  { opacity: 0.4; }
  100% { transform: translateY(-110vh); opacity: 0; }
}

/* ============================ CORNER CHROME ============================ */
.br {
  position: fixed; width: 26px; height: 26px; border: 1px solid var(--line); z-index: 6;
  pointer-events: none;
}
.br.tl  { top: var(--bracket-pad); left: var(--bracket-pad); border-right: 0; border-bottom: 0; }
.br.tr  { top: var(--bracket-pad); right: var(--bracket-pad); border-left: 0; border-bottom: 0; }
.br.bl  { bottom: var(--bracket-pad); left: var(--bracket-pad); border-right: 0; border-top: 0; }
.br.brr { bottom: var(--bracket-pad); right: var(--bracket-pad); border-left: 0; border-top: 0; }

/* ============================ RAILS ============================ */
header.rail, footer.rail {
  position: relative; z-index: 2;
  display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap;
  padding: var(--gutter-y) var(--gutter-x);
  font-family: "IBM Plex Mono", monospace;
  font-size: clamp(10.5px, 1vw, 12.5px); color: var(--mid);
  letter-spacing: 0.08em; text-transform: uppercase;
}
header.rail { border-bottom: 1px solid var(--line-soft); }
footer.rail { border-top: 1px solid var(--line-soft); }
.rail .group { display: flex; gap: clamp(10px, 1.6vw, 22px); align-items: center; flex-wrap: wrap; }
.rail .group > * { white-space: nowrap; }

.brand { display: inline-flex; align-items: center; gap: 9px; color: var(--fg-2); letter-spacing: 0.16em; }
.brand .mark { width: 16px; height: 16px; display: block; color: var(--accent); }
.sig  { color: var(--accent); }
.here { color: var(--fg-2); }

.live-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 10px var(--accent);
  animation: pulse 1.6s ease-in-out infinite; display: inline-block; vertical-align: middle;
}
.status-pill { display: inline-flex; align-items: center; gap: 7px; color: var(--accent); }
@keyframes pulse { 0%, 100% { opacity: 1 } 50% { opacity: 0.25 } }

/* EN/ES language toggle */
.langtog { display: inline-flex; align-items: center; border: 1px solid var(--line); border-radius: 3px; overflow: hidden; }
.langtog button {
  font-family: "IBM Plex Mono", monospace; font-size: 11px; letter-spacing: 0.08em;
  padding: 4px 9px; background: transparent; color: var(--dim); border: 0; cursor: pointer;
  transition: background .15s, color .15s;
}
.langtog button.on { background: var(--accent); color: var(--bg); }
.langtog button:not(.on):hover { color: var(--fg-2); }

/* ============================ MAIN GRID ============================ */
main {
  position: relative; z-index: 1; flex: 1 1 auto;
  display: grid; grid-template-columns: 1.18fr 1fr; gap: clamp(28px, 5vw, 68px);
  padding: clamp(40px, 6vw, 88px) var(--gutter-x) clamp(32px, 4vw, 64px);
  align-items: center;
}

/* ---------- identity (left) ---------- */
.identity { display: flex; flex-direction: column; gap: clamp(16px, 2vw, 26px); }

.eyebrow {
  font-family: "IBM Plex Mono", monospace;
  font-size: clamp(11px, 1.05vw, 13px); letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--accent);
  display: inline-flex; align-items: center; gap: 13px; margin: 0; align-self: flex-start;
}
.eyebrow .ln { width: 0; height: 1px; background: var(--accent); }
.eyebrow .live-dot { width: 6px; height: 6px; }

.wordmark {
  font-family: "Space Grotesk", sans-serif; font-weight: 700;
  line-height: 0.86; letter-spacing: -0.045em; color: var(--fg);
  margin: 0; display: flex; flex-direction: column;
  font-size: clamp(76px, 15vw, 188px);
}
.wordmark .accent { color: var(--accent); }
.wordmark .ch { display: inline-block; }

.role {
  font-family: "IBM Plex Mono", monospace;
  font-size: clamp(11px, 1.05vw, 13px); color: var(--mid);
  letter-spacing: 0.16em; text-transform: uppercase; margin: 0;
}

.title {
  font-family: "Space Grotesk", sans-serif; font-weight: 600;
  font-size: clamp(24px, 3vw, 40px); line-height: 1.1;
  letter-spacing: -0.02em; color: var(--fg); margin: 4px 0 0;
  max-width: 20ch; text-wrap: balance;
}
.desc {
  font-size: clamp(15px, 1.4vw, 18px); line-height: 1.55; color: var(--fg-2);
  max-width: 42ch; margin: 0; text-wrap: pretty;
}

/* status chip */
.status {
  display: inline-flex; align-items: center; gap: 11px;
  padding: 10px 16px; border: 1px solid var(--accent); color: var(--accent);
  font-family: "IBM Plex Mono", monospace;
  font-size: clamp(11px, 1.05vw, 13px); letter-spacing: 0.16em;
  text-transform: uppercase; align-self: flex-start;
  background: var(--accent-soft); border-radius: 2px;
}
.status svg { width: 15px; height: 15px; }

/* while-you-wait links */
.section-label {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px; color: var(--accent); letter-spacing: 0.18em;
  text-transform: uppercase; margin: 0 0 12px; display: inline-flex; align-items: center; gap: 9px;
}
.section-label svg { width: 14px; height: 14px; }
.links { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; max-width: 420px; }
.links a {
  position: relative; display: flex; align-items: center; gap: 13px;
  padding: 13px 15px; border: 1px solid var(--line); color: var(--fg);
  text-decoration: none; font-size: 14px; overflow: hidden;
  transition: border-color 0.2s, color 0.2s, transform 0.2s var(--ease);
}
.links a .ico { width: 18px; height: 18px; color: var(--mid); flex: 0 0 auto; transition: color 0.2s; }
.links a .meta { display: flex; flex-direction: column; gap: 1px; flex: 1 1 auto; min-width: 0; }
.links a .name { font-weight: 500; }
.links a .sub  { font-family: "IBM Plex Mono", monospace; font-size: 11px; color: var(--dim); letter-spacing: 0.04em; }
.links a .arrow { color: var(--dim); transition: transform 0.2s var(--ease), color 0.2s; flex: 0 0 auto; }
.links a::before {           /* spotlight */
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(180px circle at var(--mx, 50%) var(--my, 50%), var(--accent-soft), transparent 60%);
  opacity: 0; transition: opacity 0.25s;
}
.links a[aria-disabled] { cursor: default; opacity: 0.72; }
.links a[aria-disabled]:hover { transform: none; border-color: var(--line); }
.links a[aria-disabled]:hover::before { opacity: 0; }
.links a[aria-disabled] .arrow { color: var(--dim); }
.links a:hover { border-color: var(--accent); transform: translateY(-1px); }
.links a:hover::before { opacity: 1; }
.links a:hover .ico { color: var(--accent); }
.links a:hover .arrow { color: var(--accent); transform: translate(3px, -3px); }

/* ============================ OPS (right) ============================ */
.ops { position: relative; display: flex; flex-direction: column; align-items: stretch; gap: clamp(16px, 2vw, 22px); }
.ops-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.ops-label {
  font-family: "IBM Plex Mono", monospace; font-size: clamp(10px, 0.95vw, 12px);
  color: var(--mid); letter-spacing: 0.16em; text-transform: uppercase;
  display: inline-flex; align-items: center; gap: 8px;
}
.ops-label svg { width: 13px; height: 13px; color: var(--accent); }

/* radar */
.radar-wrap { display: flex; align-items: center; justify-content: center; }
.radar { width: clamp(280px, 33vw, 440px); aspect-ratio: 1; position: relative; display: block; }
.radar svg { display: block; width: 100%; height: 100%; }
.radar-sweep { position: absolute; inset: 0; animation: spin 6.5s linear infinite; transform-origin: 50% 50%; }
.radar-sweep::before {
  content: ''; position: absolute; left: 50%; top: 4%; width: 2px; height: 46%;
  background: linear-gradient(to top, var(--accent), transparent);
  transform: translateX(-50%); box-shadow: 0 0 14px var(--accent);
}
.radar-sweep::after {
  content: ''; position: absolute; left: 50%; top: 50%; width: 50%; height: 50%;
  background: conic-gradient(from 270deg, var(--accent-glow) 0deg, transparent 58deg);
  transform-origin: 0 0;
  -webkit-mask-image: radial-gradient(circle at 0 0, black 96%, transparent 100%);
  mask-image: radial-gradient(circle at 0 0, black 96%, transparent 100%);
}
@keyframes spin { to { transform: rotate(360deg); } }

.ops-stat {
  font-family: "IBM Plex Mono", monospace; font-size: clamp(10px, 0.9vw, 11px);
  color: var(--mid); letter-spacing: 0.16em; text-transform: uppercase; margin: 0; text-align: right;
}

/* build feed */
.feed { font-family: "IBM Plex Mono", monospace; font-size: 11.5px; color: var(--dim); }
.feed ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 7px; }
.feed li {
  display: flex; align-items: center; gap: 10px;
  opacity: 0; transform: translateX(8px);
  transition: opacity 0.4s, transform 0.4s var(--ease);
}
.feed li.in { opacity: 1; transform: translateX(0); }
.feed li .num { color: var(--accent); flex: 0 0 20px; }
.feed li .ico { width: 14px; height: 14px; flex: 0 0 auto; color: var(--mid); }
.feed li .lbl { flex: 1 1 auto; color: var(--fg-2); }
.feed li .st  { color: var(--accent); letter-spacing: 0.06em; }
.feed li.done .st { color: var(--mid); }

/* ============================ NODE NETWORK (footer) ============================ */
.netnav { display: flex; gap: clamp(8px, 1.4vw, 16px); align-items: center; flex-wrap: wrap; }
.netnav a, .netnav span.node {
  display: inline-flex; align-items: center; gap: 7px; text-decoration: none;
  color: var(--dim); transition: color 0.2s; white-space: nowrap;
}
.netnav .node .ico { width: 13px; height: 13px; }
.netnav .node.active { color: var(--accent); }
.netnav .node.live  { color: var(--fg-2); }
.netnav a.node:hover { color: var(--accent); }
.netnav .dotmark { width: 6px; height: 6px; border-radius: 50%; border: 1px solid currentColor; }
.netnav .node.active .dotmark, .netnav .node.live .dotmark { background: currentColor; border-color: currentColor; }
footer .info { display: flex; gap: clamp(12px, 2vw, 22px); align-items: center; flex-wrap: wrap; }
footer .info a { color: var(--mid); text-decoration: none; transition: color 0.2s; }
footer .info a:hover { color: var(--accent); }

/* ============================ PRODUCT / TOOL PAGES ============================ */
.wordmark.product { font-size: clamp(58px, 10vw, 124px); }
.crumb { display: inline-flex; align-items: center; gap: 8px; }
.crumb .sep { color: var(--dim); }

.cta-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin: 2px 0; }
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 20px; border-radius: 3px; text-decoration: none;
  font-family: "IBM Plex Mono", monospace; font-size: 12.5px; letter-spacing: 0.08em; text-transform: uppercase;
  border: 1px solid var(--accent); white-space: nowrap;
  transition: transform .2s var(--ease), background .2s, box-shadow .2s, border-color .2s, color .2s;
}
.btn svg { width: 16px; height: 16px; }
.btn.primary { background: var(--accent); color: var(--bg); font-weight: 600; }
.btn.primary:hover { transform: translateY(-2px); box-shadow: 0 12px 30px -12px var(--accent); }
.btn.ghost { color: var(--accent); background: var(--accent-soft); }
.btn.ghost:hover { transform: translateY(-2px); background: var(--accent-glow); }
.btn.bare { border-color: var(--line); color: var(--fg-2); background: transparent; }
.btn.bare:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.cta-note { font-family: "IBM Plex Mono", monospace; font-size: 11px; color: var(--dim); letter-spacing: 0.04em; margin: 4px 0 0; }
.cta-note a { color: var(--mid); }

.features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.feature {
  position: relative; border: 1px solid var(--line); background: var(--bg-2);
  padding: 16px 16px 18px; display: flex; flex-direction: column; gap: 8px; overflow: hidden;
  transition: border-color .2s, transform .2s var(--ease);
}
.feature::before { content: ''; position: absolute; inset: 0; background: radial-gradient(200px circle at var(--mx,50%) var(--my,50%), var(--accent-soft), transparent 60%); opacity: 0; transition: opacity .25s; }
.feature:hover { border-color: var(--accent); transform: translateY(-2px); }
.feature:hover::before { opacity: 1; }
.feature .fi { width: 24px; height: 24px; color: var(--accent); }
.feature h3 { font-family: "Space Grotesk", sans-serif; font-size: 16px; font-weight: 600; margin: 0; letter-spacing: -0.01em; color: var(--fg); }
.feature p { margin: 0; font-size: 13px; line-height: 1.5; color: var(--fg-2); text-wrap: pretty; }
.feature .fnum { position: absolute; top: 13px; right: 15px; font-family: "IBM Plex Mono", monospace; font-size: 11px; color: var(--dim); }

/* mono panel (hash / vault graphic) */
.panel { border: 1px solid var(--line); background: linear-gradient(180deg, var(--bg-2), var(--bg)); border-radius: 4px; overflow: hidden; font-family: "IBM Plex Mono", monospace; box-shadow: 0 24px 60px -30px #000; }
.panel-head { display: flex; align-items: center; gap: 9px; padding: 12px 15px; border-bottom: 1px solid var(--line-soft); font-size: 11px; color: var(--mid); letter-spacing: 0.12em; text-transform: uppercase; }
.panel-head .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 8px var(--accent); }
.panel-head .right { margin-left: auto; color: var(--accent); }
.panel-body { padding: 16px 16px 18px; font-size: 12.5px; color: var(--fg-2); }
.panel-drop { border: 1px dashed var(--line); border-radius: 3px; padding: 18px; display: flex; align-items: center; gap: 12px; color: var(--mid); margin-bottom: 14px; }
.panel-drop svg { width: 22px; height: 22px; color: var(--accent); }
.panel-drop .fname { color: var(--fg); }
.panel-drop .fmeta { color: var(--dim); font-size: 11px; }

.hash-row { display: flex; gap: 12px; padding: 9px 0; border-bottom: 1px dashed var(--line-soft); align-items: baseline; }
.hash-row:last-child { border-bottom: 0; }
.hash-row .alg { color: var(--accent); flex: 0 0 70px; }
.hash-row .val { color: var(--fg-2); word-break: break-all; line-height: 1.5; flex: 1; }
.hash-match { margin-top: 12px; display: inline-flex; align-items: center; gap: 8px; color: var(--accent); font-size: 12px; }
.hash-match svg { width: 15px; height: 15px; }

/* vault rows */
.vault-row { display: flex; align-items: center; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--line-soft); }
.vault-row:last-child { border-bottom: 0; }
.vault-row .vico { width: 16px; height: 16px; color: var(--mid); flex: 0 0 auto; }
.vault-row .vk { flex: 1; display: flex; flex-direction: column; gap: 1px; min-width: 0; }
.vault-row .vk .svc { color: var(--fg); font-family: "Space Grotesk", sans-serif; font-size: 14px; }
.vault-row .vk .env { color: var(--dim); font-size: 10.5px; letter-spacing: 0.06em; text-transform: uppercase; }
.vault-row .vv { color: var(--mid); letter-spacing: 2px; flex: 0 0 auto; }
.vault-row .vcopy { color: var(--accent); display: inline-flex; align-items: center; gap: 6px; flex: 0 0 auto; }
.vault-row .vcopy svg { width: 14px; height: 14px; }
.vault-bar { margin-top: 4px; height: 2px; background: var(--line-soft); border-radius: 2px; overflow: hidden; }
.vault-bar i { display: block; height: 100%; width: 100%; background: var(--accent); transform-origin: left; animation: countdown 4s linear infinite; }
@keyframes countdown { from { transform: scaleX(1); } to { transform: scaleX(0); } }

/* compact trust strip */
.trust { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 2px; }
.trust h4 { font-family: "IBM Plex Mono", monospace; font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; margin: 0 0 10px; display: inline-flex; align-items: center; gap: 8px; }
.trust .ok h4 { color: var(--accent); }
.trust .no h4 { color: var(--mid); }
.trust ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 7px; }
.trust li { font-size: 12.5px; line-height: 1.45; color: var(--fg-2); display: flex; gap: 8px; }
.trust li::before { content: '+'; color: var(--accent); flex: 0 0 auto; }
.trust .no li::before { content: '–'; color: var(--dim); }
@media (max-width: 540px) { .trust { grid-template-columns: 1fr; } .features { grid-template-columns: 1fr; } }

/* ============================ MOBILE ============================ */
@media (max-width: 900px) {
  main { grid-template-columns: 1fr; gap: 38px; padding-top: clamp(36px, 8vw, 64px); }
  .ops { order: 2; }
  .ops-stat { text-align: center; }
  .ops-head { justify-content: center; }
}
@media (max-width: 540px) {
  .hide-narrow { display: none; }
  header.rail, footer.rail { font-size: 10px; }
  .br { width: 18px; height: 18px; }
  .links { max-width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  .radar-sweep, .live-dot, .bg-grid, .bg-sweep, .mote { animation: none !important; }
  .feed li { opacity: 1 !important; transform: none !important; }
  .eyebrow .ln { width: 36px !important; }
}

/* ============================ THEME · C-LAB (cyan / mint) ============================ */
:root{
  --accent:   oklch(0.83 0.13 178);
  --accent-2: oklch(0.91 0.08 178);
  --accent-h: 178;
  --accent-glow: oklch(0.83 0.13 178 / 0.28);
  --accent-soft: oklch(0.83 0.13 178 / 0.12);
}

/* ============================ LANG SWITCH (tool-driven i18n) ============================ */
/* Mirrors .langtog but uses .active (wired by each tool's own i18n JS). */
.lang-switch { display: inline-flex; align-items: center; border: 1px solid var(--line); border-radius: 3px; overflow: hidden; }
.lang-switch button {
  font-family: "IBM Plex Mono", monospace; font-size: 11px; letter-spacing: 0.08em;
  padding: 4px 9px; background: transparent; color: var(--dim); border: 0; cursor: pointer;
  transition: background .15s, color .15s;
}
.lang-switch button.active { background: var(--accent); color: var(--bg); }
.lang-switch button:not(.active):hover { color: var(--fg-2); }

/* crumb link (e.g. "/ C-LAB / TOOL") — no underline, hover to accent */
.crumb a { color: var(--mid); text-decoration: none; transition: color .15s; }
.crumb a:hover { color: var(--accent); }