/* Five9 Lab — Signal Floor. Campus-core tokens: --cc-bg, --cc-surface, --cc-accent-1..4. */

:root,
html[data-theme="signal"] {
  --cc-bg: #07111c;
  --cc-surface: #102033;
  --cc-surface-2: #173049;
  --cc-accent-1: #3ee0ff;
  --cc-accent-2: #f5b942;
  --cc-accent-3: #c084fc;
  --cc-accent-4: #3ddc97;
  --cc-text: #e7eef8;
  --cc-muted: #b7c7d9;
  --cc-line: #2a4660;
  --cc-danger: #ff8b96;
  --cc-ink: #07111c;
  --cc-link: #9aefff;
  --cc-ok: #3ddc97;
  --cc-scope: #041018;
  --cc-scope-text: #d7f6ff;
  --cc-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
  color-scheme: dark;
}

html[data-theme="paper"] {
  --cc-bg: #f3f6fb;
  --cc-surface: #ffffff;
  --cc-surface-2: #e7eef6;
  --cc-accent-1: #0b6e8a;
  --cc-accent-2: #9a3412;
  --cc-accent-3: #6d28d9;
  --cc-accent-4: #047857;
  --cc-text: #122033;
  --cc-muted: #3e5166;
  --cc-line: #c9d6e4;
  --cc-danger: #9f1239;
  --cc-ink: #ffffff;
  --cc-link: #0b5670;
  --cc-ok: #047857;
  --cc-scope: #0d1b2a;
  --cc-scope-text: #e5f7ff;
  --cc-shadow: 0 14px 32px rgba(18, 40, 70, 0.08);
  color-scheme: light;
}

html[data-theme="contrast"] {
  --cc-bg: #000000;
  --cc-surface: #000000;
  --cc-surface-2: #121212;
  --cc-accent-1: #ffe600;
  --cc-accent-2: #ffffff;
  --cc-accent-3: #6dfff0;
  --cc-accent-4: #7dff7d;
  --cc-text: #ffffff;
  --cc-muted: #f2f2f2;
  --cc-line: #ffffff;
  --cc-danger: #ff6b6b;
  --cc-ink: #000000;
  --cc-link: #ffe600;
  --cc-ok: #7dff7d;
  --cc-scope: #000000;
  --cc-scope-text: #ffffff;
  --cc-shadow: none;
  color-scheme: dark;
}

html[data-theme="amber"] {
  --cc-bg: #1a1208;
  --cc-surface: #2a1c0d;
  --cc-surface-2: #3a2814;
  --cc-accent-1: #ffb020;
  --cc-accent-2: #ffd7a1;
  --cc-accent-3: #ff7a45;
  --cc-accent-4: #9be7b2;
  --cc-text: #fff6e8;
  --cc-muted: #f0ddc2;
  --cc-line: #6b4e2e;
  --cc-danger: #ff8d8d;
  --cc-ink: #1a1208;
  --cc-link: #ffe0a8;
  --cc-ok: #9be7b2;
  --cc-scope: #120c06;
  --cc-scope-text: #fff1d6;
  --cc-shadow: 0 18px 40px rgba(0, 0, 0, 0.4);
  color-scheme: dark;
}

html[data-theme="aurora"] {
  --cc-bg: #f6f3ff;
  --cc-surface: #ffffff;
  --cc-surface-2: #efe9ff;
  --cc-accent-1: #4338ca;
  --cc-accent-2: #be185d;
  --cc-accent-3: #0e7490;
  --cc-accent-4: #047857;
  --cc-text: #1e1633;
  --cc-muted: #4a435c;
  --cc-line: #ddd4f0;
  --cc-danger: #9f1239;
  --cc-ink: #ffffff;
  --cc-link: #3730a3;
  --cc-ok: #047857;
  --cc-scope: #1a1430;
  --cc-scope-text: #f4eeff;
  --cc-shadow: 0 14px 32px rgba(60, 40, 100, 0.08);
  color-scheme: light;
}

@font-face {
  font-family: "Lab UI";
  src: local("Segoe UI"), local("Liberation Sans"), local("Nimbus Sans"), local("Arial");
  font-display: swap;
  size-adjust: 100%;
  ascent-override: 95%;
  descent-override: 22%;
  line-gap-override: 0%;
}

* { box-sizing: border-box; }
html { font-size: 16px; }
html[data-font="18"] { font-size: 18px; }
html[data-font="20"] { font-size: 20px; }
html[data-font="22"] { font-size: 22px; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(1200px 500px at 10% -10%, color-mix(in srgb, var(--cc-accent-1) 18%, transparent), transparent 60%),
    radial-gradient(900px 420px at 110% 0%, color-mix(in srgb, var(--cc-accent-3) 16%, transparent), transparent 55%),
    var(--cc-bg);
  color: var(--cc-text);
  font-family: "Lab UI", "Segoe UI", "Liberation Sans", "Nimbus Sans", sans-serif;
  line-height: 1.5;
}

html[data-motion="reduce"] *,
html[data-motion="reduce"] *::before,
html[data-motion="reduce"] *::after {
  animation: none !important;
  transition: none !important;
  scroll-behavior: auto !important;
}

.skip {
  position: absolute;
  left: 12px;
  top: -40px;
  background: var(--cc-accent-2);
  color: var(--cc-ink);
  padding: 8px 12px;
  z-index: 20;
  border-radius: 8px;
}
.skip:focus { top: 12px; }

a { color: var(--cc-link); }
a:hover { text-decoration-thickness: 2px; }

.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--cc-line);
  background: color-mix(in srgb, var(--cc-surface) 88%, transparent);
  position: sticky;
  top: 0;
  z-index: 5;
  backdrop-filter: blur(10px);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
  min-width: 0;
}
.mark {
  width: 36px;
  height: 36px;
  flex: none;
}
.brand-name { font-weight: 700; letter-spacing: -0.03em; }
.brand-sub { display: block; color: var(--cc-muted); font-size: 0.75rem; font-weight: 500; }
.top-actions { margin-left: auto; display: flex; gap: 8px; align-items: center; }

.shell {
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr);
  min-height: calc(100vh - 58px);
}
.rail {
  border-right: 1px solid var(--cc-line);
  padding: 14px 10px 24px;
  position: sticky;
  top: 58px;
  height: calc(100vh - 58px);
  overflow: auto;
}
.rail h2 {
  margin: 16px 8px 6px;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cc-muted);
}
.rail a, .rail button.navlink {
  display: flex;
  width: 100%;
  text-align: left;
  gap: 8px;
  align-items: center;
  text-decoration: none;
  color: var(--cc-text);
  background: transparent;
  border: 0;
  border-radius: 10px;
  padding: 8px 10px;
  font: inherit;
  cursor: pointer;
}
.rail a[aria-current="page"], .rail a:hover, .rail button.navlink:hover {
  background: var(--cc-surface-2);
}
.dot {
  width: 8px;
  height: 8px;
  border-radius: 99px;
  background: var(--cc-accent-1);
  flex: none;
}
.dot.a2 { background: var(--cc-accent-2); }
.dot.a3 { background: var(--cc-accent-3); }
.dot.a4 { background: var(--cc-accent-4); }

main {
  padding: 22px 22px 48px;
  min-width: 0;
}
.lede {
  margin: 0 0 16px;
  color: var(--cc-muted);
  max-width: 68ch;
  min-height: 1.5em;
}
h1 {
  margin: 0 0 8px;
  font-size: clamp(1.7rem, 3vw, 2.5rem);
  letter-spacing: -0.04em;
  line-height: 1.1;
}
h2 { letter-spacing: -0.03em; font-size: 1.25rem; margin: 0 0 8px; }
h3 { font-size: 1.05rem; margin: 0 0 6px; }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr);
  gap: 18px;
  align-items: stretch;
  margin-bottom: 18px;
}
.panel {
  background: var(--cc-surface);
  border: 1px solid var(--cc-line);
  border-radius: 18px;
  box-shadow: var(--cc-shadow);
  padding: 16px;
}
.hero-art {
  background: var(--cc-scope);
  color: var(--cc-scope-text);
  border-radius: 18px;
  min-height: 240px;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--cc-line);
}
.hero-art svg { width: 100%; height: 100%; display: block; }
.scan {
  position: absolute;
  left: 0; right: 0;
  height: 2px;
  background: color-mix(in srgb, var(--cc-accent-1) 80%, white);
  animation: scan 4.8s linear infinite;
  opacity: 0.7;
}
@keyframes scan {
  from { top: 0; }
  to { top: 100%; }
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin: 12px 0 18px;
}
.stat strong { display: block; font-size: 1.4rem; letter-spacing: -0.04em; }
.stat span { color: var(--cc-muted); font-size: 0.85rem; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 12px;
}
.card {
  display: block;
  background: var(--cc-surface);
  border: 1px solid var(--cc-line);
  border-radius: 16px;
  padding: 14px;
  text-decoration: none;
  color: inherit;
  min-height: 100%;
}
a.card:hover { border-color: var(--cc-accent-1); }
.kicker {
  color: var(--cc-muted);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 6px;
}
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.tag {
  border: 1px solid var(--cc-line);
  border-radius: 99px;
  padding: 2px 8px;
  font-size: 0.75rem;
  color: var(--cc-muted);
}
.tag.hot { color: var(--cc-ink); background: var(--cc-accent-2); border-color: transparent; }
.tag.ok { color: var(--cc-ink); background: var(--cc-accent-4); border-color: transparent; }
.tag.warn { color: var(--cc-ink); background: var(--cc-accent-2); border-color: transparent; }

.btn, button, input, select {
  font: inherit;
  color: inherit;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border-radius: 999px;
  border: 1px solid var(--cc-line);
  background: var(--cc-surface-2);
  color: var(--cc-text);
  padding: 8px 14px;
  min-height: 44px;
  cursor: pointer;
  text-decoration: none;
}
.btn.primary { background: var(--cc-accent-1); color: var(--cc-ink); border-color: transparent; font-weight: 700; }
.btn.ghost { background: transparent; }
.btn[aria-pressed="true"] { outline: 2px solid var(--cc-accent-1); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }

.lesson-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 340px);
  gap: 16px;
  align-items: start;
}
.prose p { max-width: 72ch; }
.callout, .uncertain {
  border-left: 4px solid var(--cc-accent-1);
  padding: 10px 12px;
  background: var(--cc-surface-2);
  border-radius: 0 12px 12px 0;
  margin: 12px 0;
}
.uncertain { border-left-color: var(--cc-accent-2); }
.figure {
  background: var(--cc-surface);
  border: 1px solid var(--cc-line);
  border-radius: 16px;
  padding: 10px;
  margin: 12px 0;
}
.figure svg { width: 100%; height: auto; display: block; }
.figure figcaption { color: var(--cc-muted); font-size: 0.9rem; margin-top: 6px; }

.scope {
  background: var(--cc-scope);
  color: var(--cc-scope-text);
  border-radius: 16px;
  padding: 12px;
  border: 1px solid var(--cc-line);
}
.scope h2, .scope h3 { color: var(--cc-scope-text); }
.flow-svg { width: 100%; height: auto; }
.log {
  font-family: ui-monospace, "Liberation Mono", monospace;
  font-size: 0.82rem;
  white-space: pre-wrap;
  background: #05080c;
  color: #d6ffe4;
  padding: 12px;
  border-radius: 12px;
  overflow: auto;
  max-height: 280px;
}
html[data-theme="contrast"] .log { color: #ffffff; border: 1px solid #fff; }

fieldset {
  border: 1px solid var(--cc-line);
  border-radius: 12px;
  margin: 0 0 10px;
  padding: 10px 12px;
}
legend { padding: 0 6px; }
label.choice {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  padding: 8px;
  border-radius: 10px;
  min-height: 44px;
}
label.choice:hover { background: var(--cc-surface-2); }
.why { min-height: 1.4em; }
.why.ok { color: var(--cc-ok); }
.why.bad { color: var(--cc-danger); }

.flash {
  min-height: 140px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 16px;
  border-radius: 16px;
  background: var(--cc-surface-2);
  border: 1px dashed var(--cc-line);
}
.checks { list-style: none; padding: 0; margin: 0; }
.checks li { margin: 6px 0; }
.checks label { display: flex; gap: 8px; align-items: flex-start; }

.cites { padding-left: 18px; }
.cites li { margin: 4px 0; }

.table-wrap { overflow-x: auto; max-width: 100%; border: 1px solid var(--cc-line); border-radius: 12px; }
table { border-collapse: collapse; width: 100%; min-width: 520px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--cc-line); vertical-align: top; }
th { background: var(--cc-surface-2); }

.slider-row { display: grid; grid-template-columns: 1fr auto; gap: 8px; align-items: center; margin: 8px 0; }
input[type="range"] { width: 100%; accent-color: var(--cc-accent-1); }
input[type="text"], input[type="search"], select, textarea {
  background: var(--cc-bg);
  border: 1px solid var(--cc-line);
  border-radius: 10px;
  padding: 8px 10px;
  min-height: 44px;
  width: 100%;
}
.field { margin: 8px 0 12px; }
.field span, .field .lbl { display: block; margin-bottom: 4px; }

.canvas-wrap { width: 100%; min-height: 420px; height: 420px; aspect-ratio: 16 / 10; background: var(--cc-scope); border-radius: 16px; overflow: hidden; position: relative; }
.canvas-wrap canvas { width: 100%; height: 420px; display: block; aspect-ratio: 16 / 10; }
.pacing-chart { display: block; width: 100%; height: auto; aspect-ratio: 640 / 180; background: var(--cc-scope); border-radius: 12px; }
.figure-svg, .flow-svg { display: block; width: 100%; height: auto; }

.ivr-layout, .tool-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr) 260px;
  gap: 12px;
  align-items: start;
}
.mod-list { display: flex; flex-direction: column; gap: 6px; }
.script-node {
  border: 1px solid var(--cc-line);
  border-radius: 12px;
  padding: 8px;
  margin: 0 0 8px;
  background: var(--cc-surface);
}
.script-node.active { border-color: var(--cc-accent-1); box-shadow: inset 0 0 0 1px var(--cc-accent-1); }
.dtmf { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }

.tabbar {
  display: none;
  position: fixed;
  left: 0; right: 0; bottom: 0;
  background: var(--cc-surface);
  border-top: 1px solid var(--cc-line);
  z-index: 6;
  padding: 6px 8px calc(6px + env(safe-area-inset-bottom));
  justify-content: space-around;
}
.tabbar a, .tabbar button {
  flex: 1;
  background: transparent;
  border: 0;
  color: var(--cc-text);
  text-decoration: none;
  font-size: 0.75rem;
  min-height: 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
}
.tabbar a[aria-current="page"] { color: var(--cc-accent-1); font-weight: 700; }

dialog {
  border: 1px solid var(--cc-line);
  border-radius: 18px;
  background: var(--cc-surface);
  color: var(--cc-text);
  width: min(520px, calc(100vw - 24px));
  padding: 16px;
}
dialog::backdrop { background: rgba(0, 0, 0, 0.55); }
.swatches { display: flex; flex-wrap: wrap; gap: 8px; }
.swatch {
  width: 44px; height: 44px; border-radius: 12px; border: 2px solid var(--cc-line); cursor: pointer; padding: 0;
}
.swatch[aria-pressed="true"] { outline: 3px solid var(--cc-accent-2); }

.mind { width: 100%; height: auto; }
.note { color: var(--cc-muted); font-size: 0.92rem; }
hr.sep { border: 0; border-top: 1px solid var(--cc-line); margin: 18px 0; }

@media (max-width: 960px) {
  .hero, .lesson-layout, .ivr-layout, .tool-layout { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .shell { grid-template-columns: 1fr; }
  .rail { display: none; }
  .tabbar { display: flex; }
  main { padding: 16px 14px 96px; }
  .brand-sub { display: none; }
  .top-actions .hide-sm { display: none; }
}