/* UI Suputnik — Susret 01
   Aesthetic: warm paper editorial.
   Type: Source Serif 4 (editorial serif, accent) + Manrope (UI sans) + JetBrains Mono (labels/data).
   Color: cream paper, ink, single muted ochre/teal accent. No purple gradients.
*/

:root {
  --paper: #f3ede1;
  --paper-2: #ebe3d2;
  --paper-3: #e2d8c2;
  --card: #fbf7ec;
  --ink: #1a1814;
  --ink-2: #3a352c;
  --muted: #6f6754;
  --line: #cfc4ac;
  --line-2: #b8ab8e;

  --accent: #6b4f1d;          /* ochre ink — primary accent */
  --accent-soft: #c9a566;
  --accent-wash: #efe3c7;

  --teal: #2a5d57;
  --teal-soft: #b9d2cd;
  --teal-wash: #dde9e6;

  --rust: #8a3a1f;
  --rust-soft: #d9a890;
  --rust-wash: #ecd6c8;

  --good: #2f6b3a;
  --good-wash: #d6e6cf;

  --warn: #8a3a1f;
  --warn-wash: #ecd6c8;

  --serif: "Source Serif 4", "Iowan Old Style", "Charter", Georgia, serif;
  --sans: "Manrope", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --r-sm: 4px;
  --r-md: 8px;
  --r-lg: 14px;
  --r-xl: 22px;

  --shadow-sm: 0 1px 0 rgba(26,24,20,0.04), 0 2px 6px rgba(26,24,20,0.04);
  --shadow-md: 0 1px 0 rgba(26,24,20,0.05), 0 6px 18px rgba(26,24,20,0.07);
  --shadow-lift: 0 14px 36px rgba(26,24,20,0.14);

  color-scheme: light;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "ss01", "cv11";
}

/* Subtle paper texture via SVG noise */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.35;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.1  0 0 0 0 0.09  0 0 0 0 0.07  0 0 0 0.06 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  z-index: 0;
}

button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: none; padding: 0; }

/* === LAYOUT === */
.app {
  position: relative;
  z-index: 1;
  max-width: 1340px;
  margin: 0 auto;
  padding: 28px clamp(20px, 3vw, 40px) 80px;
}

/* === TYPE === */
.serif { font-family: var(--serif); font-weight: 400; }
.mono { font-family: var(--mono); }

.kicker {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.kicker--accent { color: var(--accent); }

h1, h2, h3, h4 { margin: 0; font-weight: 500; line-height: 1.1; letter-spacing: -0.01em; }
h1 { font-family: var(--serif); font-size: clamp(40px, 5vw, 64px); font-weight: 400; letter-spacing: -0.02em; }
h2 { font-family: var(--serif); font-size: clamp(28px, 3vw, 38px); font-weight: 400; letter-spacing: -0.015em; }
h3 { font-family: var(--serif); font-size: 22px; }
h4 { font-family: var(--sans); font-size: 14px; font-weight: 600; letter-spacing: 0.02em; text-transform: uppercase; color: var(--muted); }

p { margin: 0; }
a { color: var(--accent); text-decoration: none; border-bottom: 1px solid currentColor; }

/* === HEADER === */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 36px;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 14px;
}
.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 36px; height: 36px;
  border: 1.5px solid var(--ink);
  border-radius: 50%;
  font-family: var(--serif);
  font-style: italic;
  font-size: 18px;
  background: var(--card);
}
.brand-name { font-family: var(--serif); font-size: 19px; }
.brand-meta { color: var(--muted); font-size: 13px; font-family: var(--mono); }
.topbar-right { display: flex; gap: 18px; align-items: center; color: var(--muted); font-family: var(--mono); font-size: 12px; }

/* === HERO === */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 48px;
  align-items: end;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 48px;
}
.hero-title { max-width: 18ch; }
.hero-title em { font-style: italic; color: var(--accent); }
.hero-sub {
  margin-top: 22px;
  font-family: var(--serif);
  font-size: 19px;
  font-style: italic;
  color: var(--muted);
  max-width: 38ch;
}
.hero-meta {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
}
.hero-meta strong { color: var(--ink); font-weight: 500; }

/* Decision chain — the spine of the course */
.spine {
  position: relative;
  padding: 22px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
}
.spine-label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 14px;
}
.spine-flow {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
  position: relative;
}
.spine-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  padding: 10px 4px 4px;
}
.spine-step + .spine-step::before {
  content: "";
  position: absolute;
  left: -50%;
  right: 50%;
  top: 18px;
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--line-2) 0 4px, transparent 4px 8px);
}
.spine-dot {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--paper);
  border: 1.5px solid var(--ink);
  position: relative;
  z-index: 1;
}
.spine-step--active .spine-dot { background: var(--accent); border-color: var(--accent); }
.spine-name { margin-top: 10px; font-family: var(--mono); font-size: 11px; color: var(--ink-2); }
.spine-step--active .spine-name { color: var(--accent); font-weight: 600; }

/* === MODULE PANELS === */
.module {
  margin-bottom: 64px;
  scroll-margin-top: 24px;
}
.module-head {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) auto;
  gap: 20px;
  align-items: start;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 28px;
}
.module-num {
  font-family: var(--serif);
  font-style: italic;
  font-size: 38px;
  color: var(--accent);
  line-height: 1;
  /* Visually align baseline with h2 (which uses larger font) */
  margin-top: 4px;
}
.module-title { padding-top: 0; }
.module-title h2 { margin-bottom: 6px; }
.module-pattern {
  display: flex;
  gap: 6px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.module-pattern span {
  padding: 4px 8px;
  background: var(--paper-2);
  border-radius: var(--r-sm);
}
.module-pattern span.on {
  background: var(--accent-wash);
  color: var(--accent);
}
.module-summary {
  font-family: var(--serif);
  font-size: 17px;
  font-style: italic;
  color: var(--muted);
  max-width: 60ch;
  margin-top: 4px;
}

/* === CARDS / SURFACES === */
.surface {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
}
.surface--inset {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}

/* === MREŽA POJMOVA (Concept Network) === */
.mreza {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: 24px;
}
.mreza-stage {
  position: relative;
  aspect-ratio: 4 / 3;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.mreza-stage svg { width: 100%; height: 100%; display: block; }
.mreza-stage svg text { pointer-events: none; }
.mreza-hint {
  margin-top: 4px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.04em;
  padding: 10px 12px;
  background: var(--paper-2);
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  line-height: 1.5;
}

/* Venn timeline */
.venn-timeline {
  margin-top: 14px;
  padding: 16px 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
}
.venn-timeline-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 10px;
}
.venn-era-label {
  font-family: var(--serif);
  font-style: italic;
  font-size: 15px;
  color: var(--ink-2);
}
.venn-era-label strong {
  font-family: var(--mono);
  font-size: 12px;
  font-style: normal;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.04em;
  margin-right: 6px;
}
.venn-slider {
  width: 100%;
  margin: 4px 0 8px;
}
.venn-ticks {
  display: flex;
  justify-content: space-between;
  margin-bottom: 10px;
}
.venn-tick {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--muted);
  padding: 4px 6px;
  background: transparent;
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: color 140ms ease, background 140ms ease;
}
.venn-tick.on { color: var(--accent); background: var(--accent-wash); font-weight: 600; }
.venn-tick:hover { color: var(--ink-2); }
.venn-era-note {
  font-family: var(--serif);
  font-style: italic;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
  margin: 0;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
}
.mreza-detail {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.mreza-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 22px;
}
.mreza-card h3 { margin-bottom: 4px; }
.mreza-card .relation {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.mreza-card .desc { color: var(--ink-2); margin-top: 12px; }
.mreza-rows { display: grid; gap: 10px; margin-top: 16px; }
.mreza-row {
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: 12px;
  padding: 10px 12px;
  background: var(--paper-2);
  border-radius: var(--r-md);
  font-size: 13px;
}
.mreza-row dt {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  align-self: center;
}
.mreza-row dd { margin: 0; color: var(--ink-2); }

/* Drop chips bench */
.bench {
  margin-top: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 18px 18px 14px;
}
.bench-label { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 12px; }
.bench-chips { display: flex; flex-wrap: wrap; gap: 8px; min-height: 40px; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  background: var(--paper);
  border: 1px solid var(--line-2);
  border-radius: 999px;
  font-size: 13px;
  cursor: grab;
  user-select: none;
  transition: transform 120ms ease, box-shadow 120ms ease, background 120ms ease;
}
.chip:hover { transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.chip.dragging { opacity: 0.4; }
.chip.placed { background: var(--good-wash); border-color: var(--good); cursor: default; }
.chip.placed-wrong { background: var(--warn-wash); border-color: var(--warn); cursor: grab; }

/* Concept-region nodes (svg labels rendered as html foreignObject overlay) */
.region-label {
  position: absolute;
  font-family: var(--serif);
  font-style: italic;
  pointer-events: none;
  color: var(--ink);
  background: rgba(251,247,236,0.85);
  padding: 2px 8px;
  border-radius: var(--r-sm);
  font-size: 13px;
}
.region-label.r-ai { font-size: 22px; font-weight: 500; }

.mreza-stage.is-target { box-shadow: inset 0 0 0 2px var(--accent); }

/* === SIGNALNA PLOČA === */
.signals {
  margin-top: 24px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  gap: 24px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 24px;
}
.signals h3 { margin-bottom: 8px; }
.slider-row {
  display: grid;
  gap: 6px;
  margin-bottom: 14px;
}
.slider-row label {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--ink-2);
}
.slider-row .val { font-family: var(--mono); font-size: 12px; color: var(--muted); }
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: var(--paper-3);
  border-radius: 999px;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--paper);
  cursor: grab;
}
input[type="range"]::-moz-range-thumb {
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--paper);
  cursor: grab;
}

.distribution {
  display: grid;
  gap: 8px;
}
.dist-row {
  display: grid;
  grid-template-columns: 160px 1fr 44px;
  gap: 10px;
  align-items: center;
  font-size: 13px;
}
.dist-row .name { font-family: var(--mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }
.dist-row .name.lead { color: var(--accent); font-weight: 700; }
.dist-bar { height: 14px; background: var(--paper-2); border-radius: 999px; overflow: hidden; }
.dist-bar > i {
  display: block;
  height: 100%;
  background: var(--ink-2);
  transition: width 220ms ease, background 220ms ease;
  border-radius: 999px;
}
.dist-row.lead .dist-bar > i { background: var(--accent); }
.dist-row .pct { font-family: var(--mono); font-size: 12px; color: var(--ink-2); text-align: right; }

/* === EXPERT SYSTEM DEMO === */
.expert-demo {
  margin-top: 24px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 24px;
}
.expert-demo-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 20px;
  align-items: start;
  margin-bottom: 18px;
}
.expert-demo-head p {
  max-width: 72ch;
  margin-top: 6px;
  color: var(--muted);
  font-size: 13px;
}
.expert-demo-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.expert-flow {
  display: grid;
  grid-template-columns: 1fr 28px 1fr 28px 1fr 28px 1fr 28px 1fr;
  gap: 8px;
  align-items: center;
  padding: 16px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}
.expert-node {
  min-height: 76px;
  display: grid;
  align-content: center;
  gap: 5px;
  padding: 12px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  text-align: center;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}
.expert-node span {
  font-family: var(--serif);
  font-size: 17px;
  color: var(--ink);
}
.expert-node small {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  line-height: 1.35;
}
.expert-node.active {
  transform: translateY(-2px);
  border-color: var(--accent);
  background: var(--accent-wash);
  box-shadow: var(--shadow-md);
  animation: expert-pulse 1000ms ease-in-out infinite;
}
.expert-arrow {
  height: 1px;
  background: var(--line-2);
  position: relative;
}
.expert-arrow::after {
  content: "";
  position: absolute;
  right: -1px;
  top: -4px;
  width: 8px;
  height: 8px;
  border-top: 1px solid var(--line-2);
  border-right: 1px solid var(--line-2);
  transform: rotate(45deg);
}
.expert-arrow.active { background: var(--accent); }
.expert-arrow.active::after { border-color: var(--accent); }
.expert-lab {
  margin-top: 16px;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 14px;
}
.expert-panel {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 16px;
  transition: border-color 180ms ease, box-shadow 180ms ease, background 180ms ease;
}
.expert-panel.active {
  border-color: var(--accent);
  background: var(--card);
  box-shadow: var(--shadow-sm);
}
.expert-panel h4 {
  margin-bottom: 10px;
  color: var(--ink-2);
}
.expert-user-case {
  color: var(--muted);
  font-family: var(--serif);
  font-style: italic;
  font-size: 14px;
  margin-bottom: 12px;
}
.expert-facts {
  display: grid;
  gap: 7px;
  padding: 0;
  margin: 0;
  list-style: none;
}
.expert-facts li {
  padding: 8px 10px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  font-size: 12px;
  color: var(--ink-2);
}
.expert-facts li.derived {
  border-color: var(--accent);
  background: var(--accent-wash);
  color: var(--accent);
  font-weight: 600;
}
.expert-rules {
  display: grid;
  gap: 8px;
}
.expert-rule {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 4px 10px;
  padding: 10px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  font-size: 12px;
  color: var(--ink-2);
}
.expert-rule.active {
  border-color: var(--accent);
  background: var(--accent-wash);
  animation: expert-rule-flash 900ms ease-in-out infinite;
}
.expert-rule-id {
  grid-row: span 2;
  width: 28px;
  height: 28px;
  display: inline-grid;
  place-items: center;
  border-radius: 50%;
  background: var(--paper-2);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  color: var(--muted);
}
.expert-rule.active .expert-rule-id {
  background: var(--accent);
  color: var(--paper);
}
.expert-rule strong {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.04em;
}
.expert-panel--trace p {
  color: var(--ink-2);
  font-size: 13px;
  line-height: 1.5;
}
.expert-step-label {
  display: inline-flex;
  margin-bottom: 10px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.expert-result {
  margin-top: 14px;
  padding: 12px;
  background: var(--paper-2);
  border-left: 3px solid var(--accent);
  border-radius: var(--r-sm);
  display: grid;
  gap: 5px;
}
.expert-result strong {
  color: var(--ink);
  line-height: 1.35;
}

/* === SORTIRNICA (drag-to-bin classifier) === */
.sortirnica {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  gap: 24px;
}
.sort-pool {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 20px;
  align-self: start;
  position: sticky;
  top: 20px;
}
.sort-pool h4 { margin: 0 0 12px; }
.sort-stack {
  display: grid;
  gap: 10px;
  min-height: 200px;
}
.sort-card {
  background: var(--paper);
  border: 1px solid var(--line-2);
  border-radius: var(--r-md);
  padding: 14px 16px;
  cursor: grab;
  transition: transform 140ms ease, box-shadow 140ms ease, opacity 220ms ease;
  box-shadow: var(--shadow-sm);
}
.sort-card:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
.sort-card.dragging { opacity: 0.3; }
.sort-card .title { font-weight: 600; font-size: 14px; line-height: 1.3; }
.sort-card .sig { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 8px; }
.sort-card .sig span {
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  padding: 2px 6px;
  background: var(--paper-2);
  border-radius: 3px;
}

.sort-bins {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.bin {
  position: relative;
  min-height: 130px;
  background: var(--card);
  border: 1.5px dashed var(--line-2);
  border-radius: var(--r-md);
  padding: 12px;
  transition: background 140ms ease, border-color 140ms ease;
}
.bin.over { background: var(--accent-wash); border-color: var(--accent); border-style: solid; }
.bin h5 {
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-2);
  display: flex;
  justify-content: space-between;
}
.bin .count {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
}
.bin-cards { display: grid; gap: 6px; }
.placed-card {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 6px 8px;
  font-size: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: grab;
}
.placed-card .mark {
  width: 14px; height: 14px; border-radius: 50%;
  display: inline-grid; place-items: center;
  font-family: var(--mono); font-size: 9px;
  flex-shrink: 0;
}
.placed-card.right .mark { background: var(--good); color: white; }
.placed-card.wrong .mark { background: var(--warn); color: white; }
.placed-card .label { line-height: 1.25; }

/* Confusion matrix */
.confusion {
  margin-top: 24px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 20px;
}
.confusion h4 { margin-bottom: 12px; }
.matrix {
  display: grid;
  font-family: var(--mono);
  font-size: 11px;
}
.matrix .corner { background: transparent; }
.matrix .cell {
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  border: 1px solid var(--line);
  background: var(--paper);
  font-weight: 600;
  position: relative;
}
.matrix .cell.diag { background: var(--good-wash); }
.matrix .cell .n { font-size: 14px; }
.matrix .cell.empty .n { color: var(--paper-3); }
.matrix .head {
  display: grid;
  place-items: center;
  text-align: center;
  font-size: 10px;
  text-transform: uppercase;
  color: var(--muted);
  padding: 4px;
}
.matrix .head.row { transform: rotate(0); justify-content: end; padding-right: 8px; text-align: right; }
.matrix-axes {
  display: flex;
  justify-content: space-between;
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Scenario footnote */
.feedback {
  margin-top: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 18px;
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 14px;
  align-items: start;
}
.feedback .stamp {
  width: 24px; height: 24px;
  border-radius: 50%;
  display: grid; place-items: center;
  font-family: var(--mono); font-size: 12px;
  background: var(--accent-wash);
  color: var(--accent);
}
.feedback h4 { margin: 0; color: var(--ink); text-transform: none; letter-spacing: 0; font-size: 14px; }
.feedback p { font-size: 14px; color: var(--ink-2); margin-top: 4px; }
.feedback .takeaway {
  margin-top: 10px;
  font-family: var(--serif);
  font-style: italic;
  font-size: 15px;
  color: var(--accent);
  border-left: 2px solid var(--accent);
  padding-left: 12px;
}

/* === TURING + KINESKA SOBA === */
.thought {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}
.tcard {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 22px;
}
.tcard h3 { margin-bottom: 4px; }
.tcard .sub { color: var(--muted); font-style: italic; font-family: var(--serif); margin-bottom: 16px; }

/* Turing chat */
.turing-room {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 14px;
  margin-top: 14px;
}
.turing-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 12px;
}
.turing-tab {
  padding: 10px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  text-align: center;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.turing-window {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 12px;
  min-height: 140px;
  font-size: 13px;
}
.turing-msg {
  display: block;
  padding: 8px 10px;
  border-radius: var(--r-sm);
  margin-bottom: 6px;
  background: var(--paper-2);
  font-size: 13px;
  line-height: 1.4;
}
.turing-msg.you { background: var(--accent-wash); color: var(--accent); margin-left: 24px; }
.turing-msg.them { background: var(--paper); border: 1px solid var(--line); }

.q-picker { display: grid; gap: 8px; margin-top: 10px; }
.q-option {
  text-align: left;
  padding: 12px 14px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  font-size: 13px;
  transition: background 140ms ease, border-color 140ms ease;
}
.q-option:hover { background: var(--paper); }
.q-option.active { border-color: var(--accent); background: var(--accent-wash); }
.q-option .what { font-family: var(--mono); font-size: 10px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; display: block; margin-top: 4px; }

.verdict {
  margin-top: 14px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.verdict button {
  padding: 10px;
  background: var(--card);
  border: 1px solid var(--line-2);
  border-radius: var(--r-md);
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.verdict button:hover { background: var(--paper-2); }

.reveal {
  margin-top: 14px;
  padding: 14px;
  background: var(--paper-2);
  border-left: 3px solid var(--accent);
  border-radius: var(--r-sm);
  font-size: 13px;
  line-height: 1.5;
}

/* Chinese room — rule assembler */
.room-stage {
  margin-top: 14px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 16px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.rule-shelf, .rule-room {
  background: var(--card);
  border: 1.5px dashed var(--line-2);
  border-radius: var(--r-md);
  padding: 12px;
  min-height: 200px;
}
.rule-shelf h5, .rule-room h5 {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.rule-room.over { border-style: solid; border-color: var(--accent); background: var(--accent-wash); }
.rule { display: grid; gap: 4px; padding: 10px; background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-sm); margin-bottom: 6px; cursor: grab; font-size: 12px; }
.rule .if { color: var(--muted); font-family: var(--mono); font-size: 10px; text-transform: uppercase; letter-spacing: 0.04em; }
.rule .then { color: var(--ink-2); }
.rule.fired { background: var(--accent-wash); border-color: var(--accent); }

.room-input-row {
  margin-top: 12px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}
.room-input-row input {
  width: 100%;
  padding: 10px 12px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  font-size: 14px;
}
.btn {
  padding: 10px 16px;
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--r-md);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid var(--ink);
}
.btn:hover { background: var(--ink-2); }
.btn--ghost { background: transparent; color: var(--ink); }
.btn--ghost:hover { background: var(--paper-2); }

.room-output {
  margin-top: 12px;
  padding: 14px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  font-size: 13px;
  min-height: 60px;
}
.room-output .ans { font-family: var(--serif); font-size: 16px; color: var(--ink); }
.room-output .trace { font-family: var(--mono); font-size: 11px; color: var(--muted); margin-top: 8px; }

.understand-toggle {
  margin-top: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--paper-2);
  border-radius: var(--r-md);
  font-size: 13px;
  color: var(--ink-2);
}
.understand-toggle .pill {
  display: inline-flex;
  width: 36px; height: 18px;
  background: var(--line-2);
  border-radius: 999px;
  position: relative;
  cursor: pointer;
}
.understand-toggle .pill::after {
  content: "";
  position: absolute;
  width: 14px; height: 14px;
  background: var(--paper);
  border-radius: 50%;
  top: 2px; left: 2px;
  transition: transform 180ms ease;
}
.understand-toggle.on .pill { background: var(--accent); }
.understand-toggle.on .pill::after { transform: translateX(18px); }

.gap-list {
  margin-top: 10px;
  display: grid;
  gap: 6px;
  font-size: 12px;
  color: var(--ink-2);
}
.gap-list li { padding: 6px 10px; background: var(--paper-2); border-left: 2px solid var(--rust); border-radius: var(--r-sm); list-style: none; }
.gap-list ul { list-style: none; padding: 0; margin: 0; }

/* === DEFINICIJA — Constructor === */
.def {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 24px;
}
.def-builder {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 22px;
}
.def-builder h4 { margin-bottom: 12px; }
.def-canvas {
  min-height: 90px;
  padding: 14px;
  background: var(--paper-2);
  border-radius: var(--r-md);
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.5;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}
.def-canvas:empty::before { content: "Slaži definiciju izborom dijelova ispod…"; font-style: italic; }
.def-piece {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  font-family: var(--serif);
  font-size: 18px;
  color: var(--ink);
  cursor: pointer;
}
.def-piece .x { font-family: var(--mono); font-size: 10px; color: var(--muted); }
.def-piece:hover { background: var(--paper-2); }

.def-bank {
  margin-top: 16px;
  display: grid;
  gap: 12px;
}
.bank-group h5 { margin: 0 0 6px; font-family: var(--mono); font-size: 10px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }
.bank-row { display: flex; flex-wrap: wrap; gap: 6px; }
.bank-piece {
  padding: 6px 12px;
  background: var(--paper);
  border: 1px solid var(--line-2);
  border-radius: 999px;
  font-size: 13px;
  cursor: pointer;
  transition: background 120ms ease;
}
.bank-piece:hover { background: var(--paper-2); }
.bank-piece.used { background: var(--accent-wash); border-color: var(--accent); color: var(--accent); }

.def-checks {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 22px;
}
.def-checks h4 { margin-bottom: 14px; }
.check-item {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 10px;
  align-items: start;
  padding: 8px 0;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--ink-2);
}
.check-item:first-of-type { border-top: 0; }
.check-item .box {
  width: 18px; height: 18px;
  border: 1.5px solid var(--line-2);
  border-radius: 4px;
  display: grid; place-items: center;
  font-family: var(--mono); font-size: 12px;
  color: transparent;
}
.check-item.met .box {
  background: var(--good);
  border-color: var(--good);
  color: white;
}
.check-item.met { color: var(--ink); }

.def-toggle {
  display: flex; gap: 6px; margin-bottom: 12px;
}
.def-toggle button {
  padding: 6px 12px;
  background: var(--paper-2);
  border-radius: var(--r-sm);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.def-toggle button.on { background: var(--ink); color: var(--paper); }

/* === TAKEAWAY === */
.takeaway {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 24px;
  align-items: stretch;
}
.takeaway-card {
  position: relative;
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--r-lg);
  padding: 32px;
  display: grid;
  gap: 18px;
}
.takeaway-card .stamp {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-soft);
}
.takeaway-card .quote {
  font-family: var(--serif);
  font-size: 26px;
  line-height: 1.3;
  font-weight: 400;
}
.takeaway-card .quote em { color: var(--accent-soft); font-style: italic; }
.takeaway-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  border-top: 1px solid rgba(243,237,225,0.15);
  padding-top: 16px;
}
.takeaway-stats .label { font-family: var(--mono); font-size: 10px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--accent-soft); }
.takeaway-stats .value { font-family: var(--serif); font-size: 20px; margin-top: 4px; }
.takeaway-actions { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.takeaway-actions .btn { background: var(--paper); color: var(--ink); border-color: var(--paper); white-space: nowrap; }
.takeaway-actions .btn:hover { background: var(--accent-soft); border-color: var(--accent-soft); }
.copy-status { font-family: var(--mono); font-size: 11px; color: var(--accent-soft); }

.share-side {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.share-side h4 { margin: 0; }
.share-side .next-up {
  font-family: var(--serif);
  font-size: 18px;
  color: var(--ink);
  font-style: italic;
}

/* === ROADMAP === */
.roadmap {
  position: relative;
  padding: 28px 4px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
}
.roadmap-spine {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
  margin-bottom: 28px;
  padding: 0 16px;
  position: relative;
}
.roadmap-step {
  position: relative;
  text-align: center;
  padding-top: 24px;
}
.roadmap-step::before {
  content: "";
  position: absolute;
  top: 7px; left: 0; right: 0;
  height: 1px;
  background: var(--line-2);
}
.roadmap-step:first-child::before { left: 50%; }
.roadmap-step:last-child::before { right: 50%; }
.roadmap-step .pin {
  position: absolute;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
  width: 14px; height: 14px;
  background: var(--paper);
  border: 1.5px solid var(--ink);
  border-radius: 50%;
}
.roadmap-step .name { font-family: var(--mono); font-size: 11px; color: var(--ink-2); letter-spacing: 0.04em; text-transform: uppercase; }

.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
  padding: 0 16px;
}
.roadmap-col { display: grid; gap: 8px; align-content: start; }
.roadmap-card {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 12px;
  font-size: 12px;
  position: relative;
}
.roadmap-card .klasa { font-family: var(--mono); font-size: 10px; color: var(--muted); letter-spacing: 0.04em; text-transform: uppercase; }
.roadmap-card .ttl { font-family: var(--serif); font-size: 15px; margin-top: 4px; line-height: 1.2; }
.roadmap-card .lock {
  position: absolute;
  top: 10px; right: 10px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--muted);
}

/* === TWEAKS overrides for embedded controls === */
.tweak-info {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: 6px 0 0;
}

/* === RESPONSIVE === */
@media (max-width: 1100px) {
  .hero, .mreza, .signals, .sortirnica, .thought, .def, .takeaway, .expert-lab {
    grid-template-columns: 1fr;
  }
  .expert-flow { grid-template-columns: 1fr; }
  .expert-arrow { height: 22px; width: 1px; justify-self: center; }
  .expert-arrow::after { right: -4px; top: 13px; transform: rotate(135deg); }
  .sort-pool { position: static; }
  .roadmap-spine, .roadmap-grid { grid-template-columns: repeat(3, 1fr); }
  .roadmap-step:nth-child(4)::before { left: 0; }
  .roadmap-step:nth-child(6)::before { right: 0; }
}
@media (max-width: 700px) {
  .module-head { grid-template-columns: 48px 1fr; }
  .module-head .module-pattern { grid-column: 1 / -1; margin-top: 8px; }
  .sort-bins { grid-template-columns: repeat(2, 1fr); }
  .roadmap-spine, .roadmap-grid { grid-template-columns: repeat(2, 1fr); }
  .turing-tabs { grid-template-columns: 1fr; }
  .room-stage { grid-template-columns: 1fr; }
  .expert-demo-head { grid-template-columns: 1fr; }
  .expert-demo-actions { justify-content: flex-start; }
  .matrix { font-size: 9px; }
}

@keyframes expert-pulse {
  0%, 100% { box-shadow: var(--shadow-sm); }
  50% { box-shadow: 0 0 0 4px rgba(107,79,29,0.13), var(--shadow-md); }
}

@keyframes expert-rule-flash {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(2px); }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}