/* ── Kurrawong Training — Design System ── */
/* Matches kurrawong-preview.netlify.app exactly */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;1,9..40,300&family=DM+Serif+Display&display=swap');

/* ── Design Tokens ── */
:root {
  --f: "DM Sans", system-ui, sans-serif;
  --se: "DM Serif Display", Georgia, serif;
  --gold: #d4a843;
  --goldd: #a8893a;
  --golddim: #8a7232;
  --tr: .3s ease;
}

:root, :root.light {
  --bg:  #faf9f6;
  --bg2: #f0efeb;
  --card:  #fff;
  --card2: #f7f6f3;
  --br:  #e0ddd6;
  --br2: #ccc9c0;
  --tx:  #1a1a18;
  --tx2: #4a4a45;
  --tx3: #7a7a72;
  --tx4: #aaa9a2;
  --header-bg: #faf9f6e6;
  --accent-card-bg: #d4a8430f;
  --accent-bar: #d4a8431f;
  --sidebar-w: 230px;
}

:root.dark {
  --bg:  #0a0a0a;
  --bg2: #111;
  --card:  #161616;
  --card2: #1c1c1c;
  --br:  #222;
  --br2: #2a2a2a;
  --tx:  #f5f5f0;
  --tx2: #bbb;
  --tx3: #888;
  --tx4: #555;
  --header-bg: #0a0a0ae0;
  --accent-card-bg: #d4a84308;
  --accent-bar: #d4a8432e;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

body {
  font-family: var(--f);
  background: var(--bg);
  color: var(--tx);
  line-height: 1.6;
  font-size: 15px;
  transition: background var(--tr), color var(--tr);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

/* ── Header ── */
.k-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 64px;
  padding: 0 3vw;
  background: var(--header-bg);
  border-bottom: .5px solid var(--br);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 1000;
  transition: background var(--tr), border-color var(--tr);
}

.k-header .logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.k-header .logo-mark {
  width: 32px;
  height: 32px;
  background: var(--tx);
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--se);
  font-size: 15px;
  color: var(--bg);
  font-weight: 400;
  transition: background var(--tr), color var(--tr);
}

.k-header .logo-text {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .5px;
  color: var(--tx);
  transition: color var(--tr);
}

.k-header nav {
  display: flex;
  align-items: center;
  gap: 2px;
}

.k-header nav a {
  border-radius: 8px;
  color: var(--tx3);
  font-size: 13px;
  padding: 7px 13px;
  text-decoration: none;
  transition: all .2s;
  white-space: nowrap;
}

.k-header nav a:hover {
  background: var(--accent-card-bg);
  color: var(--tx);
}

.k-header nav a.active {
  color: var(--gold);
}

.k-header .header-right {
  display: flex;
  align-items: center;
  gap: 6px;
}

.header-progress {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--tx4);
  margin-right: 6px;
}

.header-progress-bar {
  width: 80px;
  height: 3px;
  background: var(--br);
  border-radius: 2px;
  overflow: hidden;
}

.header-progress-fill {
  height: 100%;
  background: var(--gold);
  border-radius: 2px;
  transition: width .4s ease;
}

/* ── Training Layout ── */
.training-body {
  display: flex;
  padding-top: 64px;
  min-height: 100vh;
}

/* ── Sidebar ── */
.training-sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  position: sticky;
  top: 64px;
  height: calc(100vh - 64px);
  overflow-y: auto;
  border-right: .5px solid var(--br);
  background: var(--bg);
  padding: 1.5rem 0 2rem;
  transition: background var(--tr), border-color var(--tr);
}

.sidebar-section-label {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--tx4);
  padding: 0 1.25rem .6rem;
}

.sidebar-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .5rem;
  padding: .4rem 1.25rem;
  font-size: 13px;
  color: var(--tx3);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: all .15s;
}

.sidebar-link:hover {
  color: var(--tx);
  background: var(--accent-card-bg);
}

.sidebar-link.active {
  color: var(--gold);
  border-left-color: var(--gold);
  background: var(--accent-bar);
  font-weight: 500;
}

.sidebar-link.done .sidebar-dot {
  background: var(--gold);
}

.sidebar-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--br2);
  flex-shrink: 0;
  transition: background .2s;
}

/* ── Main content ── */
.training-main {
  flex: 1;
  min-width: 0;
  padding: 2.5rem clamp(1.25rem, 3vw, 3rem) 5rem;
}

/* Keep prose readable even when the main column is wide */
.training-main .prose,
.training-main .module-subtitle,
.training-main .callout {
  max-width: 760px;
}

.training-main .prose p,
.training-main .prose ul,
.training-main .prose ol,
.training-main .prose h2,
.training-main .prose h3 {
  max-width: 760px;
}

/* ── Module header ── */
.module-eyebrow {
  font-size: 11px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--goldd);
  margin-bottom: .5rem;
}

.module-title {
  font-family: var(--se);
  font-size: clamp(28px, 3.5vw, 42px);
  line-height: 1.15;
  color: var(--tx);
  margin-bottom: .5rem;
}

.module-subtitle {
  font-size: 16px;
  color: var(--tx3);
  line-height: 1.65;
  max-width: 540px;
  margin-bottom: 2rem;
}

/* ── Prose typography ── */
.prose h2 {
  font-family: var(--se);
  font-size: 1.35rem;
  color: var(--tx);
  margin: 2rem 0 .5rem;
  line-height: 1.2;
}

.prose h3 {
  font-size: .95rem;
  font-weight: 600;
  color: var(--tx);
  margin: 1.25rem 0 .25rem;
  letter-spacing: -.01em;
}

.prose p {
  color: var(--tx2);
  margin-bottom: .8rem;
  font-size: 14.5px;
  line-height: 1.7;
}

.prose ul, .prose ol {
  padding-left: 1.4rem;
  margin-bottom: .8rem;
}

.prose li {
  color: var(--tx2);
  font-size: 14.5px;
  margin-bottom: .25rem;
  line-height: 1.6;
}

.prose code {
  font-family: ui-monospace, "JetBrains Mono", monospace;
  font-size: .82em;
  background: var(--card2);
  border: .5px solid var(--br);
  padding: .1em .35em;
  border-radius: 4px;
  color: var(--tx2);
}

/* ── Callout boxes ── */
.callout {
  border-left: 2px solid;
  padding: .75rem 1rem;
  border-radius: 0 8px 8px 0;
  margin: 1.25rem 0;
  font-size: 13.5px;
  line-height: 1.6;
}

.callout.tip {
  border-color: var(--gold);
  background: var(--accent-bar);
  color: var(--tx2);
}

.callout.tip strong, .callout.info strong, .callout.warning strong {
  display: block;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: .3rem;
}

.callout.tip strong { color: var(--goldd); }

.callout.info {
  border-color: #60a5fa;
  background: #1e3a5f18;
  color: var(--tx2);
}

.callout.info strong { color: #60a5fa; }

.callout.warning {
  border-color: #f97316;
  background: #7c3aed0a;
  color: var(--tx2);
}

.callout.warning strong { color: #f97316; }

/* ── Exercise / interactive panels ── */
.exercise {
  background: var(--card);
  border: .5px solid var(--br);
  border-radius: 14px;
  margin: 1.5rem 0;
  overflow: hidden;
  transition: all var(--tr);
}

.exercise-header {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .7rem 1.1rem;
  border-bottom: .5px solid var(--br);
  font-size: 12.5px;
  font-weight: 500;
  color: var(--tx3);
  background: var(--card2);
  letter-spacing: .3px;
}

.exercise-header .icon { font-size: 14px; }

.exercise-body { padding: 1.25rem; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .5rem 1.1rem;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  font-family: var(--f);
  cursor: pointer;
  border: .5px solid transparent;
  transition: all .2s;
  text-decoration: none;
}

.btn-primary {
  background: var(--gold);
  color: var(--bg);
  border-color: var(--gold);
}
.btn-primary:hover { background: var(--goldd); border-color: var(--goldd); }

.btn-secondary {
  background: var(--card);
  color: var(--tx2);
  border-color: var(--br);
}
.btn-secondary:hover { border-color: var(--gold); color: var(--tx); }

.btn-outline {
  background: transparent;
  color: var(--gold);
  border-color: var(--goldd);
}
.btn-outline:hover { background: var(--accent-bar); }

.btn-sm { padding: .3rem .7rem; font-size: 12px; }

/* ── Code blocks ── */
.code-block {
  background: #0e0e12;
  border: .5px solid #2a2a35;
  border-radius: 10px;
  overflow: hidden;
  margin: 1rem 0;
}

.code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .45rem .85rem;
  background: #161620;
  font-size: 11px;
  font-family: ui-monospace, monospace;
  color: #6b6b80;
  border-bottom: .5px solid #2a2a35;
}

.code-block pre {
  margin: 0;
  padding: 1rem 1.1rem;
  overflow-x: auto;
  font-family: ui-monospace, "JetBrains Mono", monospace;
  font-size: 13px;
  line-height: 1.6;
  color: #cdd6f4;
}

/* Turtle syntax tokens */
.tok-prefix   { color: #89b4fa; }
.tok-iri      { color: #a6e3a1; }
.tok-literal  { color: #f9e2af; }
.tok-predicate{ color: #cba6f7; }
.tok-comment  { color: #585b70; font-style: italic; }
.tok-keyword  { color: #f38ba8; }
.tok-annotated{ cursor: help; border-bottom: 1.5px dotted #89b4fa; }
.annotation-token { cursor: help; border-bottom: 1.5px dotted; }

/* ── Prop table (Prez style) ── */
.prop-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.prop-table tr { border-bottom: .5px solid var(--br); }
.prop-table tr:last-child { border-bottom: none; }
.prop-table td { padding: .5rem .5rem; vertical-align: top; }
.prop-table td:first-child {
  font-weight: 500;
  color: var(--tx2);
  white-space: nowrap;
  width: 180px;
  font-size: 13px;
}
.prop-table td:nth-child(2) { color: var(--tx); }
.prop-table .lang-tag {
  display: inline-block;
  font-family: ui-monospace, monospace;
  font-size: 10px;
  font-weight: 500;
  color: var(--tx4);
  background: var(--card2);
  padding: 1px 5px;
  border-radius: 3px;
  margin-left: .35rem;
  vertical-align: middle;
}
.prop-table .iri-value {
  font-family: ui-monospace, monospace;
  font-size: 12px;
  color: var(--goldd);
  word-break: break-all;
}

/* ── Hover tooltip utility (Prez-style label hints) ── */
.has-tip {
  position: relative;
  cursor: help;
  border-bottom: 1px dotted var(--tx4);
}
.has-tip[data-tip]:hover::after,
.has-tip[data-tip]:focus::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 0;
  background: var(--tx);
  color: var(--bg);
  padding: .4rem .55rem;
  border-radius: 5px;
  font-size: 11px;
  font-family: ui-monospace, monospace;
  font-weight: 400;
  white-space: pre;
  letter-spacing: 0;
  z-index: 1000;
  box-shadow: 0 4px 14px rgba(0,0,0,.18);
  pointer-events: none;
}
.has-tip[data-tip]:hover::before {
  content: "";
  position: absolute;
  bottom: 100%;
  left: 12px;
  border: 4px solid transparent;
  border-top-color: var(--tx);
  z-index: 1000;
}

/* Prez-style property name (rendered label with IRI hover) */
.prop-name {
  cursor: help;
  position: relative;
  border-bottom: 1px dotted var(--tx4);
}

/* ── External resource links ── */
.ext-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: .6rem;
  margin: 1rem 0 0;
}
.ext-link {
  display: flex;
  gap: .75rem;
  align-items: flex-start;
  padding: .75rem .9rem;
  background: var(--card);
  border: .5px solid var(--br);
  border-radius: 8px;
  text-decoration: none;
  color: var(--tx);
  transition: all .15s;
}
.ext-link:hover {
  border-color: var(--gold);
  background: var(--accent-card-bg);
  transform: translateY(-1px);
}
.ext-link-icon {
  width: 30px; height: 30px;
  flex-shrink: 0;
  border-radius: 7px;
  background: var(--accent-bar);
  color: var(--goldd);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px;
  font-weight: 600;
}
.ext-link-body { min-width: 0; }
.ext-link-title {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--tx);
  margin-bottom: .15rem;
  display: flex;
  align-items: baseline;
  gap: .5rem;
  flex-wrap: wrap;
}
.ext-link-host {
  font-size: 10.5px;
  font-weight: 400;
  color: var(--tx4);
  font-family: ui-monospace, monospace;
  letter-spacing: .2px;
}
.ext-link-desc {
  font-size: 12.5px;
  color: var(--tx3);
  line-height: 1.45;
}

/* ── Module nav footer ── */
.module-nav {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: .5px solid var(--br);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ── Label utility ── */
.label {
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--tx4);
}

/* ── ─────────────────────────────────────── ── */
/* ── Interactive Component Styles ── */
/* ── ─────────────────────────────────────── ── */

/* ── Triple Builder (Module 1) ── */
.triple-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 72px;
  gap: .6rem;
  margin-bottom: .6rem;
  align-items: end;
}

.triple-row .part-label {
  font-size: 10px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--tx4);
  margin-bottom: .2rem;
}

.triple-row input, .triple-row select {
  width: 100%;
  background: var(--bg);
  border: .5px solid var(--br);
  border-radius: 7px;
  padding: .4rem .65rem;
  font-size: 12.5px;
  outline: none;
  font-family: ui-monospace, monospace;
  color: var(--tx);
  transition: border-color .15s;
}

.triple-row input:focus, .triple-row select:focus {
  border-color: var(--gold);
}

.triple-row .remove-btn {
  background: none;
  border: .5px solid var(--br2);
  color: var(--tx4);
  border-radius: 7px;
  padding: .38rem .5rem;
  cursor: pointer;
  font-size: 11px;
  transition: all .15s;
}

.triple-row .remove-btn:hover { border-color: #ef4444; color: #ef4444; }

/* ── SKOS Cards (Module 2) ── */
.skos-card {
  background: var(--card);
  border: .5px solid var(--br);
  border-radius: 10px;
  padding: .85rem 1rem;
  margin-bottom: .5rem;
  display: flex;
  gap: .85rem;
  align-items: flex-start;
  transition: border-color .15s;
}

.skos-card:hover { border-color: var(--br2); }

.skos-card .prop-name {
  font-family: ui-monospace, monospace;
  font-size: 12px;
  color: var(--gold);
  font-weight: 500;
  white-space: nowrap;
  background: var(--accent-bar);
  padding: .2rem .5rem;
  border-radius: 5px;
  min-width: 155px;
  flex-shrink: 0;
}

.skos-card .prop-desc { font-size: 13px; color: var(--tx3); line-height: 1.55; }

/* ── Hierarchy tree (Module 2) ── */
.hierarchy-demo {
  background: var(--card);
  border: .5px solid var(--br);
  border-radius: 10px;
  padding: .85rem 1rem;
}

.hier-item {
  display: flex;
  align-items: center;
  gap: .4rem;
  padding: .28rem .4rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  color: var(--tx2);
  transition: background .1s;
  user-select: none;
}

.hier-item:hover { background: var(--accent-card-bg); }

.hier-item.selected {
  background: var(--accent-bar);
  color: var(--gold);
  font-weight: 500;
}

.hier-children {
  padding-left: 1.2rem;
  border-left: 1.5px solid var(--br);
  margin-left: .7rem;
}

.hier-concept-detail {
  background: var(--bg);
  border: .5px solid var(--br);
  border-radius: 7px;
  padding: .75rem 1rem;
  margin-top: .75rem;
  font-size: 13px;
}

.hier-concept-detail table { width: 100%; border-collapse: collapse; }
.hier-concept-detail td { padding: .22rem .4rem; vertical-align: top; border-bottom: .5px solid var(--br); }
.hier-concept-detail td:first-child { font-weight: 500; color: var(--tx4); font-size: 11.5px; width: 140px; white-space: nowrap; }

/* ── Annotation panel (Module 2) ── */
.annotation-panel {
  background: var(--card2);
  border: .5px solid var(--br);
  border-radius: 8px;
  padding: .75rem 1rem;
  margin-top: .75rem;
  font-size: 13px;
  min-height: 3.5rem;
  transition: all .2s;
  color: var(--tx3);
}

.annotation-panel.active {
  background: var(--accent-bar);
  border-color: var(--goldd);
  color: var(--tx2);
}

/* ── Excel Simulator (Module 3) ── */
.excel-sim {
  border: .5px solid var(--br);
  border-radius: 10px;
  overflow: hidden;
  font-family: var(--f);
}

.excel-toolbar {
  background: #217346;
  padding: .45rem .75rem;
  display: flex;
  align-items: center;
  gap: .5rem;
}

.xl-btn {
  background: rgba(255,255,255,.15);
  border: .5px solid rgba(255,255,255,.3);
  color: #fff;
  padding: .2rem .65rem;
  border-radius: 5px;
  font-size: 12px;
  cursor: pointer;
  font-family: var(--f);
  transition: background .15s;
}

.xl-btn:hover { background: rgba(255,255,255,.28); }

.excel-tabs {
  background: #1a5c38;
  display: flex;
  gap: 2px;
  padding: 0 .5rem;
}

.excel-tab {
  background: #d4edda;
  color: #1a5c38;
  padding: .28rem .85rem;
  font-size: 12px;
  cursor: pointer;
  border-radius: 3px 3px 0 0;
  font-weight: 600;
  font-family: var(--f);
}

.excel-tab.active { background: var(--card); color: #217346; }

.sheet { display: none; }
.sheet.active { display: block; }

.excel-grid { overflow-x: auto; max-height: 300px; overflow-y: auto; }

.excel-grid table { border-collapse: collapse; width: 100%; background: var(--card); }

.excel-grid th {
  background: var(--card2);
  border: .5px solid var(--br);
  padding: .25rem .5rem;
  font-size: 11px;
  font-weight: 600;
  text-align: center;
  white-space: nowrap;
  color: var(--tx3);
  position: sticky;
  top: 0;
  z-index: 2;
}

.excel-grid th.row-num { width: 32px; }
.excel-grid td { border: .5px solid var(--br); padding: 0; vertical-align: top; }

.excel-grid td.row-num {
  background: var(--card2);
  text-align: center;
  font-size: 11px;
  color: var(--tx4);
  padding: .2rem;
  min-width: 32px;
}

.excel-grid input[type="text"] {
  width: 100%;
  border: none;
  outline: none;
  padding: .22rem .4rem;
  font-size: 12px;
  font-family: var(--f);
  height: 24px;
  background: var(--card);
  color: var(--tx);
}

.excel-grid input[type="text"]:focus {
  background: var(--accent-bar);
  box-shadow: inset 0 0 0 1.5px var(--gold);
}

.excel-grid input.error { background: #fee2e2; }
.excel-grid input.ok   { background: #f0fdf4; }
.required-star { color: #ef4444; }
.col-hint { font-size: 9px; font-weight: 400; color: var(--tx4); display: block; text-transform: none; letter-spacing: 0; }
.convert-row { display: flex; gap: .75rem; align-items: center; padding: .75rem; background: var(--card2); border-top: .5px solid var(--br); }
.validation-badge { display: inline-flex; align-items: center; gap: .3rem; font-size: 12px; padding: .2rem .55rem; border-radius: 5px; }
.badge-ok    { background: #d1fae5; color: #065f46; }
.badge-error { background: #fee2e2; color: #991b1b; }

/* ── IRI Builder (Module 4) ── */
.strategy-cards { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; margin: 1rem 0; }
@media(max-width:600px){ .strategy-cards{grid-template-columns:1fr;} }

.strategy-card {
  border: .5px solid var(--br);
  border-radius: 12px;
  padding: .9rem 1rem;
  cursor: pointer;
  transition: all .15s;
  background: var(--card);
}

.strategy-card:hover { border-color: var(--gold); }
.strategy-card.selected { border-color: var(--gold); background: var(--accent-card-bg); }
.strategy-card.bad { border-color: var(--br2); }
.strategy-card.bad:hover { border-color: #f87171; }
.strategy-card.bad.selected { border-color: #ef4444; background: #fee2e20a; }
.strategy-card h4 { margin: 0 0 .3rem; font-size: 13.5px; font-weight: 500; color: var(--tx); }
.strategy-card p { margin: 0; font-size: 12px; color: var(--tx3); }
.strategy-card .pros-cons { margin-top: .5rem; font-size: 11.5px; }
.strategy-card .pro { color: #22c55e; }
.strategy-card .con { color: #f87171; }
.recommended-badge { display: inline-block; background: var(--gold); color: var(--bg); font-size: 9px; font-weight: 600; padding: .1rem .4rem; border-radius: 3px; text-transform: uppercase; letter-spacing: .04em; margin-left: .4rem; }
.not-recommended { display: inline-block; background: #ef4444; color: #fff; font-size: 9px; font-weight: 600; padding: .1rem .4rem; border-radius: 3px; text-transform: uppercase; margin-left: .4rem; }
.iri-builder { background: var(--card); border: .5px solid var(--br); border-radius: 10px; padding: 1rem; }
.iri-builder label { font-size: 12px; font-weight: 500; display: block; margin-bottom: .3rem; color: var(--tx3); }
.iri-builder input, .iri-builder select {
  width: 100%; border: .5px solid var(--br); border-radius: 7px; padding: .4rem .65rem;
  font-size: 13px; margin-bottom: .75rem; outline: none; background: var(--bg); color: var(--tx); font-family: var(--f);
}
.iri-builder input:focus, .iri-builder select:focus { border-color: var(--gold); }
.iri-live { background: #0e0e12; border-radius: 8px; padding: .85rem 1rem; margin-top: .75rem; }
.iri-live .label { color: #6b6b80; margin-bottom: .4rem; }
.iri-example { font-family: ui-monospace, monospace; font-size: 12.5px; padding: .3rem .5rem; background: #161620; border-radius: 4px; margin-bottom: .3rem; word-break: break-all; }
.iri-good { color: #a6e3a1; }
.iri-warn { color: #fab387; }

/* ── Match Builder (Module 5) ── */
.match-arena { display: grid; grid-template-columns: 1fr 76px 1fr; gap: .5rem; align-items: start; }
.vocab-column { background: var(--card); border: .5px solid var(--br); border-radius: 10px; padding: .75rem; }
.vocab-column h4 { font-size: 10px; font-weight: 500; text-transform: uppercase; color: var(--tx4); letter-spacing: 1.5px; margin: 0 0 .6rem; }
.match-concept { padding: .38rem .6rem; border-radius: 7px; font-size: 13px; cursor: pointer; border: 1.5px solid transparent; margin-bottom: .3rem; transition: all .15s; user-select: none; color: var(--tx2); }
.match-concept:hover { background: var(--accent-card-bg); }
.match-concept.selected-a { border-color: #60a5fa; background: #1e3a5f18; }
.match-concept.selected-b { border-color: #a78bfa; background: #5b21b618; }
.match-concept.matched { border-color: var(--goldd); background: var(--accent-bar); opacity: .7; }
.match-controls { display: flex; flex-direction: column; gap: .35rem; align-items: center; justify-content: center; padding-top: 1.8rem; }
.match-btn { background: var(--card); border: .5px solid var(--br); border-radius: 6px; padding: .3rem .4rem; font-size: 10.5px; cursor: pointer; width: 72px; text-align: center; transition: all .12s; font-weight: 500; color: var(--tx3); font-family: var(--f); }
.match-btn:hover { border-color: var(--gold); color: var(--gold); }
.match-btn.active { background: var(--gold); color: var(--bg); border-color: var(--gold); }
.match-entry { display: flex; align-items: center; gap: .4rem; font-size: 12px; padding: .3rem .5rem; background: var(--card2); border-radius: 6px; margin-bottom: .3rem; border-left: 2px solid var(--goldd); }
.match-entry .remove { margin-left: auto; cursor: pointer; color: var(--tx4); font-size: 11px; }
.match-entry .remove:hover { color: #ef4444; }
.match-type-badge { font-size: 10px; font-weight: 600; padding: .1rem .4rem; border-radius: 3px; text-transform: uppercase; }
.exact   { background: #d1fae5; color: #065f46; }
.broad   { background: #dbeafe; color: #1e40af; }
.narrow  { background: #f3e8ff; color: #5b21b6; }
.related { background: #fef3c7; color: #92400e; }
.close   { background: var(--accent-bar); color: var(--goldd); }

/* ── SPARQL Runner (Module 6) ── */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
@media(max-width:700px){ .two-col{grid-template-columns:1fr;} }
.query-templates { display: flex; flex-wrap: wrap; gap: .3rem; margin-bottom: .5rem; }
.qtpl { background: var(--card); border: .5px solid var(--br); border-radius: 5px; padding: .22rem .6rem; font-size: 11.5px; cursor: pointer; transition: all .12s; color: var(--tx3); font-family: var(--f); }
.qtpl:hover { border-color: var(--gold); color: var(--gold); }
.sparql-runner { background: #0e0e12; border: .5px solid #2a2a35; border-radius: 10px; overflow: hidden; }
.sparql-runner .sr-toolbar { background: #161620; padding: .5rem .75rem; display: flex; align-items: center; justify-content: space-between; border-bottom: .5px solid #2a2a35; }
.sparql-runner .sr-toolbar span { color: #6b6b80; font-size: 11px; font-family: ui-monospace, monospace; }
.sr-toolbar .run-btn { background: var(--gold); color: #0e0e12; border: none; border-radius: 6px; padding: .3rem .8rem; font-size: 11.5px; font-weight: 600; cursor: pointer; font-family: var(--f); transition: background .15s; }
.sr-toolbar .run-btn:hover { background: var(--goldd); }
.sparql-runner textarea { width: 100%; background: #0e0e12; color: #cdd6f4; font-family: ui-monospace, "JetBrains Mono", monospace; font-size: 12.5px; line-height: 1.55; border: none; padding: .8rem 1rem; resize: vertical; min-height: 140px; outline: none; }
.sparql-results { padding: .65rem; overflow-x: auto; }
.sparql-results table { width: 100%; border-collapse: collapse; font-size: 12px; }
.sparql-results th { background: var(--accent-bar); color: var(--goldd); font-weight: 600; padding: .3rem .6rem; text-align: left; border-bottom: .5px solid var(--br); font-size: 11px; text-transform: uppercase; letter-spacing: .05em; }
.sparql-results td { padding: .28rem .6rem; border-bottom: .5px solid var(--br); font-family: ui-monospace, monospace; font-size: 11.5px; word-break: break-all; color: var(--tx2); }
.sparql-results tr:hover td { background: var(--accent-card-bg); }
.result-count { font-size: 11px; color: var(--tx4); margin-bottom: .3rem; }
.error-msg { color: #f87171; font-size: 12px; padding: .5rem .75rem; }

/* ── Prez Browser (Module 6) ── */
.prez-sim { border: .5px solid var(--br); border-radius: 10px; overflow: hidden; background: var(--card); display: flex; flex-direction: column; }
.prez-topbar { background: #0f172a; color: #f1f5f9; padding: .5rem 1rem; display: flex; align-items: center; gap: .5rem; font-size: 12px; }
.prez-logo { font-weight: 600; color: #38bdf8; font-size: 13px; }
.prez-body { display: flex; min-height: 340px; }
.prez-tree { width: 220px; border-right: .5px solid var(--br); padding: .75rem; flex-shrink: 0; overflow-y: auto; }
.prez-tree h4 { font-size: 9.5px; font-weight: 500; text-transform: uppercase; color: var(--tx4); margin: 0 0 .5rem; letter-spacing: 1.5px; }
.tree-node { display: flex; align-items: center; gap: .3rem; padding: .3rem .4rem; border-radius: 6px; cursor: pointer; font-size: 12.5px; color: var(--tx2); transition: background .1s; user-select: none; }
.tree-node:hover { background: var(--accent-card-bg); }
.tree-node.selected { background: var(--accent-bar); color: var(--gold); font-weight: 500; }
.tree-node .toggle { width: 12px; font-size: 8px; color: var(--tx4); }
.prez-detail { flex: 1; padding: 1rem 1.1rem; overflow-y: auto; }
.prez-detail h3 { font-size: 1rem; margin: 0 0 .2rem; color: var(--tx); }
.prez-detail .concept-iri { font-size: 11px; font-family: ui-monospace, monospace; color: var(--tx4); margin-bottom: .75rem; }

/* ── Agent Builder (Module 7) ── */
.agent-builder { background: var(--card); border: .5px solid var(--br); border-radius: 12px; padding: 1.1rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; margin-bottom: .75rem; }
@media(max-width:600px){ .form-row{grid-template-columns:1fr;} }
.form-group label { font-size: 11.5px; font-weight: 500; display: block; margin-bottom: .25rem; color: var(--tx3); }
.form-group input, .form-group select {
  width: 100%; border: .5px solid var(--br); border-radius: 7px; padding: .4rem .65rem;
  font-size: 13px; outline: none; background: var(--bg); color: var(--tx); font-family: var(--f);
}
.form-group input:focus, .form-group select:focus { border-color: var(--gold); }
.form-group .hint { font-size: 11px; color: var(--tx4); margin-top: .2rem; }
.id-strategy-tabs { display: flex; gap: .3rem; margin-bottom: .75rem; flex-wrap: wrap; }
.id-tab { padding: .3rem .75rem; border-radius: 6px; border: .5px solid var(--br); font-size: 12px; cursor: pointer; background: var(--card); font-weight: 500; transition: all .12s; color: var(--tx3); font-family: var(--f); }
.id-tab:hover { border-color: var(--gold); color: var(--gold); }
.id-tab.active { background: var(--gold); color: var(--bg); border-color: var(--gold); }
.id-panel { display: none; }
.id-panel.active { display: block; }
.rel-row { display: flex; gap: .5rem; align-items: flex-end; margin-bottom: .4rem; }
.rel-row .form-group { flex: 1; margin: 0; }
.rel-row .remove-btn { background: none; border: .5px solid var(--br2); color: var(--tx4); border-radius: 6px; padding: .4rem .5rem; cursor: pointer; font-size: 11px; white-space: nowrap; transition: all .15s; font-family: var(--f); }
.rel-row .remove-btn:hover { border-color: #ef4444; color: #ef4444; }
.agent-card-preview { background: var(--card2); border: .5px solid var(--br); border-radius: 10px; padding: 1rem; display: flex; gap: .85rem; align-items: flex-start; }
.agent-avatar { width: 44px; height: 44px; border-radius: 50%; background: var(--gold); display: flex; align-items: center; justify-content: center; font-size: 1rem; color: var(--bg); font-weight: 600; flex-shrink: 0; font-family: var(--se); }
.agent-meta { font-size: 13.5px; }
.agent-meta strong { font-size: 15px; color: var(--tx); }
.agent-meta .iri-chip { display: inline-block; background: var(--accent-bar); color: var(--goldd); font-family: ui-monospace, monospace; font-size: 11px; padding: .15rem .4rem; border-radius: 4px; margin-top: .3rem; }
.ext-id-chip { display: inline-flex; align-items: center; gap: .3rem; background: var(--card2); border: .5px solid var(--br2); color: var(--tx3); font-size: 11px; padding: .15rem .5rem; border-radius: 4px; margin-top: .3rem; }

/* ── Index page hero ── */
.training-hero {
  padding: 100px 3vw 60px;
  max-width: 820px;
  margin: 0 auto;
}

.training-hero h1 {
  font-family: var(--se);
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.1;
  color: var(--tx);
  margin-bottom: .75rem;
}

.training-hero h1 .gd { color: var(--gold); }

.training-hero p {
  font-size: 16px;
  color: var(--tx3);
  line-height: 1.7;
  max-width: 500px;
  margin-bottom: 1.5rem;
}

.training-hero .meta-row {
  display: flex;
  gap: 1.5rem;
  margin-top: 2rem;
  margin-bottom: 2.5rem;
}

.meta-chip {
  background: var(--card);
  border: .5px solid var(--br);
  border-radius: 8px;
  padding: .55rem .9rem;
  text-align: center;
}

.meta-chip .val {
  font-family: var(--se);
  font-size: 1.5rem;
  color: var(--tx);
  display: block;
}

.meta-chip .lbl {
  font-size: 11px;
  color: var(--tx4);
  letter-spacing: 1px;
}

/* ── Module cards (index) ── */
.modules-section {
  padding: 0 3vw 80px;
  max-width: 820px;
  margin: 0 auto;
}

.section-label {
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--tx4);
  margin-bottom: 1.25rem;
}

.module-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: .85rem;
}

.module-card {
  background: var(--card);
  border: .5px solid var(--br);
  border-radius: 14px;
  padding: 1.35rem;
  text-decoration: none;
  color: var(--tx);
  display: block;
  transition: all .25s;
  cursor: pointer;
}

.module-card:hover {
  border-color: var(--gold);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,.06);
}

.module-card .card-num {
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--goldd);
  margin-bottom: .4rem;
}

.module-card h3 {
  font-size: 15px;
  font-weight: 500;
  color: var(--tx);
  margin-bottom: .35rem;
}

.module-card p {
  font-size: 12.5px;
  color: var(--tx3);
  line-height: 1.55;
  margin: 0 0 .75rem;
}

.module-card .card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .3rem;
}

.tag {
  display: inline-block;
  background: var(--card2);
  border: .5px solid var(--br);
  color: var(--tx3);
  font-size: 10.5px;
  padding: .15rem .5rem;
  border-radius: 20px;
  letter-spacing: .3px;
}

.tag.gold { background: var(--accent-bar); border-color: var(--golddim); color: var(--goldd); }

/* ── Footer ── */
.k-footer {
  border-top: .5px solid var(--br);
  display: grid;
  gap: 2rem;
  grid-template-columns: 2fr 1fr 1fr;
  padding: 50px 3vw 36px;
  transition: border-color var(--tr);
  max-width: 1200px;
  margin: 0 auto;
}

.k-footer h4 {
  font-size: 10px;
  color: var(--tx4);
  letter-spacing: 2.5px;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.k-footer p { font-size: 13px; color: var(--tx3); line-height: 1.6; max-width: 280px; margin-top: 8px; }

.k-footer a {
  color: var(--tx3);
  display: block;
  font-size: 13px;
  line-height: 2;
  text-decoration: none;
  transition: color .15s;
}

.k-footer a:hover { color: var(--gold); }

.copyright {
  border-top: .5px solid var(--br);
  color: var(--tx4);
  font-size: 11px;
  padding: 18px 3vw;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .training-sidebar { display: none; }
  .training-main { padding: 1.5rem 1.25rem 3rem; }
  .k-header nav { display: none; }
}