/* =============================================================================
   AI-First Architecture Explorer — style.css
   Neutral enterprise theme (Microsoft Learn / AWS Architecture Center inspired).
   Light + dark via [data-theme]; color-coded layers; accessible focus states.
   ========================================================================== */

/* ----------------------------- Design tokens ----------------------------- */
:root {
  /* Neutral palette (light) */
  --bg: #f4f6fb;
  --bg-alt: #eef1f8;
  --surface: #ffffff;
  --surface-2: #f8fafc;
  --border: #dfe4ee;
  --border-strong: #c6cede;
  --text: #1a2233;
  --text-muted: #5a6478;
  --text-faint: #8b94a7;
  --accent: #4f46e5;
  --accent-strong: #4338ca;
  --accent-soft: #eef0fe;
  --shadow-sm: 0 1px 2px rgba(20, 28, 51, 0.06), 0 1px 3px rgba(20, 28, 51, 0.08);
  --shadow-md: 0 4px 12px rgba(20, 28, 51, 0.08), 0 2px 4px rgba(20, 28, 51, 0.05);
  --shadow-lg: 0 18px 48px rgba(20, 28, 51, 0.18);
  --ring: 0 0 0 3px rgba(79, 70, 229, 0.35);

  /* Layer accent hues (consistent across light/dark) */
  --c-business: #6366f1;
  --c-ai-enablement: #2563eb;
  --c-service: #0891b2;
  --c-enablement: #059669;
  --c-preparation: #d97706;
  --c-sources: #64748b;
  --c-semantic: #c026d3;

  /* Semantic-layer hues (for the flow + overlay) */
  --s-life-science-data: #64748b;
  --s-ontologies: #c026d3;
  --s-knowledge-representation: #0891b2;
  --s-ai-models: #2563eb;
  --s-inference: #059669;

  --radius: 14px;
  --radius-sm: 9px;
  --radius-lg: 20px;
  --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --maxw: 1240px;
  --header-h: 116px;
}

[data-theme="dark"] {
  --bg: #0d111c;
  --bg-alt: #11172499;
  --surface: #161d2e;
  --surface-2: #1b2336;
  --border: #2a3349;
  --border-strong: #394257;
  --text: #e7ebf4;
  --text-muted: #a4adc2;
  --text-faint: #7c8499;
  --accent: #818cf8;
  --accent-strong: #a5b4fc;
  --accent-soft: #1e253c;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 6px 18px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 22px 55px rgba(0, 0, 0, 0.6);
  --ring: 0 0 0 3px rgba(129, 140, 248, 0.45);
  --c-business: #8b8ff6;
  --c-ai-enablement: #5b9bff;
  --c-service: #22b8d6;
  --c-enablement: #2bc48a;
  --c-preparation: #f0a93b;
  --c-sources: #8e99b0;
  --c-semantic: #e35ef0;
  --s-life-science-data: #8e99b0;
  --s-ontologies: #e35ef0;
  --s-knowledge-representation: #22b8d6;
  --s-ai-models: #5b9bff;
  --s-inference: #2bc48a;
}

/* ------------------------------- Base ------------------------------------ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 12px); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, "Apple Color Emoji", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background var(--transition), color var(--transition);
}

h1, h2, h3 { line-height: 1.25; letter-spacing: -0.01em; margin: 0; }
a { color: var(--accent-strong); }
a:hover { color: var(--accent); }

.skip-link {
  position: absolute; left: 12px; top: -48px; z-index: 200;
  background: var(--accent); color: #fff; padding: 10px 16px; border-radius: 8px;
  transition: top var(--transition);
}
.skip-link:focus { top: 12px; }

:focus-visible { outline: none; box-shadow: var(--ring); border-radius: 8px; }

/* ------------------------------- Header ---------------------------------- */
.app-header {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 12px 24px;
  display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 12px; flex: 1 1 auto; min-width: 220px; }
.brand-mark {
  display: grid; place-items: center; width: 42px; height: 42px; border-radius: 11px;
  background: linear-gradient(135deg, var(--accent), var(--c-semantic)); color: #fff;
  box-shadow: var(--shadow-sm);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { font-size: 1.02rem; }
.brand-text small { color: var(--text-muted); font-size: 0.74rem; }

.header-tools { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.search-wrap { position: relative; display: flex; align-items: center; }
.search-icon { position: absolute; left: 12px; color: var(--text-faint); pointer-events: none; }
#search {
  width: 280px; max-width: 60vw; padding: 9px 64px 9px 38px;
  border: 1px solid var(--border-strong); border-radius: 10px;
  background: var(--surface-2); color: var(--text); font-size: 0.9rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
#search::placeholder { color: var(--text-faint); }
#search:focus-visible { border-color: var(--accent); }
.search-count {
  position: absolute; right: 10px; font-size: 0.72rem; color: var(--text-muted);
  background: var(--accent-soft); padding: 2px 7px; border-radius: 20px; white-space: nowrap;
}
.search-count:empty { display: none; }

.tool-btn {
  display: inline-flex; align-items: center; gap: 7px; cursor: pointer;
  padding: 8px 13px; border-radius: 10px; font-size: 0.84rem; font-weight: 600;
  border: 1px solid var(--border-strong); background: var(--surface-2); color: var(--text);
  transition: all var(--transition);
}
.tool-btn:hover { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-strong); }
.tool-btn.icon-only { padding: 8px; }
.tool-btn[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: #fff; }
.tool-btn[aria-pressed="true"]:hover { background: var(--accent-strong); color: #fff; }

#theme-toggle .icon-moon { display: none; }
[data-theme="dark"] #theme-toggle .icon-sun { display: none; }
[data-theme="dark"] #theme-toggle .icon-moon { display: inline; }

/* Filter bar */
.filter-bar {
  max-width: var(--maxw); margin: 0 auto; padding: 0 24px 12px;
  display: flex; align-items: flex-end; gap: 14px; flex-wrap: wrap;
}
.filter-label { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-faint); font-weight: 700; padding-bottom: 9px; }
.select-wrap { display: flex; flex-direction: column; gap: 3px; font-size: 0.7rem; color: var(--text-muted); font-weight: 600; }
.select-wrap select {
  padding: 7px 10px; border-radius: 9px; border: 1px solid var(--border-strong);
  background: var(--surface-2); color: var(--text); font-size: 0.83rem; min-width: 150px; cursor: pointer;
}
.link-btn { background: none; border: none; color: var(--accent-strong); cursor: pointer; font-size: 0.82rem; font-weight: 600; padding: 9px 4px; text-decoration: underline; }
.link-btn:hover { color: var(--accent); }

/* -------------------------------- Hero ----------------------------------- */
.hero { background: linear-gradient(180deg, var(--bg-alt), var(--bg)); border-bottom: 1px solid var(--border); }
.hero-inner { max-width: var(--maxw); margin: 0 auto; padding: 52px 24px 44px; }
.eyebrow { text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.74rem; font-weight: 700; color: var(--accent-strong); margin: 0 0 12px; }
.hero h1 { font-size: clamp(1.7rem, 3.4vw, 2.6rem); max-width: 19ch; margin-bottom: 18px; }
.hero-lede { font-size: 1.06rem; color: var(--text-muted); max-width: 70ch; margin: 0 0 16px; }
.future-note {
  font-size: 0.92rem; color: var(--text); max-width: 70ch; margin: 0 0 24px;
  background: var(--accent-soft); border-left: 4px solid var(--accent); padding: 12px 16px; border-radius: 0 10px 10px 0;
}
.hero-nav { display: flex; gap: 10px; flex-wrap: wrap; }
.hero-nav a {
  padding: 8px 15px; border-radius: 24px; background: var(--surface); border: 1px solid var(--border-strong);
  text-decoration: none; color: var(--text); font-size: 0.86rem; font-weight: 600; box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}
.hero-nav a:hover { border-color: var(--accent); color: var(--accent-strong); transform: translateY(-1px); }

/* ------------------------------ Sections --------------------------------- */
.section { max-width: var(--maxw); margin: 0 auto; padding: 56px 24px; }
.section-alt { background: var(--bg-alt); max-width: none; }
.section-alt > * { max-width: var(--maxw); margin-left: auto; margin-right: auto; }
.section-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 20px; flex-wrap: wrap; margin-bottom: 26px; }
.section-head h2 { font-size: clamp(1.4rem, 2.4vw, 1.95rem); }
.section-sub { color: var(--text-muted); margin: 8px 0 0; max-width: 72ch; font-size: 0.97rem; }
.subhead { font-size: 1.1rem; margin: 38px 0 18px; }

/* Diagram toolbar */
.diagram-toolbar { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.breadcrumbs { font-size: 0.84rem; color: var(--text-muted); display: flex; align-items: center; gap: 6px; }
.breadcrumbs .crumb-sep { color: var(--text-faint); }
.breadcrumbs strong { color: var(--text); }
.zoom-controls { display: flex; align-items: center; gap: 6px; }
#zoom-level { font-size: 0.8rem; color: var(--text-muted); min-width: 42px; text-align: center; font-variant-numeric: tabular-nums; }

/* Legend */
.legend { list-style: none; display: flex; gap: 8px 16px; flex-wrap: wrap; padding: 0; margin: 0 0 24px; }
.legend li { display: flex; align-items: center; gap: 7px; font-size: 0.8rem; color: var(--text-muted); cursor: pointer; padding: 3px 8px; border-radius: 8px; transition: background var(--transition); }
.legend li:hover { background: var(--surface); }
.legend .swatch { width: 13px; height: 13px; border-radius: 4px; flex-shrink: 0; }
.legend li.dashed .swatch { background: repeating-linear-gradient(45deg, currentColor, currentColor 2px, transparent 2px, transparent 4px); border: 1.5px dashed currentColor; }
.legend li[aria-disabled="true"] { opacity: 0.35; }

/* ------------------------- Architecture diagram -------------------------- */
.diagram-scroll { overflow-x: auto; padding: 4px; }
.diagram {
  display: flex; flex-direction: column; gap: 16px; min-width: 680px;
}

.layer-band {
  position: relative; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--surface); box-shadow: var(--shadow-sm); padding: 16px 18px 18px 18px;
  border-left: 5px solid var(--layer-color, var(--border-strong));
}
.layer-band::before { content: ""; }
.band-label { display: flex; align-items: baseline; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
.band-name { font-size: 0.74rem; font-weight: 800; letter-spacing: 0.07em; text-transform: uppercase; color: var(--layer-color, var(--text)); }
.band-tagline { font-size: 0.78rem; color: var(--text-faint); }
.band-side-label { margin-left: auto; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-faint); }

/* Tracks (data / model columns) */
.tracks { display: grid; grid-template-columns: 1fr; gap: 14px; }
.tracks.split { grid-template-columns: 1fr 64px 1fr; align-items: stretch; }
.track { display: flex; flex-direction: column; gap: 10px; }
.track-title { font-size: 0.7rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-faint); }
.track-connector { display: grid; place-items: center; color: var(--c-preparation); }
.track-connector svg { width: 100%; height: 40px; }

/* Wide bar component (APIs, Model Endpoints, MCP) */
.cards { display: grid; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
.cards.wide { grid-template-columns: 1fr; }
.cards.two { grid-template-columns: repeat(2, 1fr); }
.cards.three { grid-template-columns: repeat(3, 1fr); }
.cards.four { grid-template-columns: repeat(4, 1fr); }

/* Component card */
.node {
  position: relative; text-align: left; cursor: pointer; width: 100%;
  border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
  background: var(--surface-2); color: var(--text); padding: 13px 14px;
  display: flex; align-items: flex-start; gap: 11px; font: inherit;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition), opacity var(--transition);
  border-top: 3px solid var(--layer-color, var(--accent));
}
.node:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: var(--layer-color, var(--accent)); }
.node .node-icon { flex-shrink: 0; width: 30px; height: 30px; border-radius: 8px; display: grid; place-items: center; background: var(--layer-soft, var(--accent-soft)); color: var(--layer-color, var(--accent)); }
.node .node-icon svg { width: 18px; height: 18px; }
.node .node-text { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.node .node-name { font-weight: 650; font-size: 0.9rem; }
.node .node-mini { font-size: 0.74rem; color: var(--text-muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.node.flagship { background: var(--surface); box-shadow: var(--shadow-sm); }
.node.flagship .node-name::after { content: "★"; color: var(--layer-color, var(--accent)); font-size: 0.7rem; margin-left: 6px; vertical-align: super; }
.node.bar { border-top: none; border-left: 4px solid var(--layer-color, var(--accent)); background: var(--surface); }
.node.bar .node-name { font-size: 0.98rem; }

/* States: selection, related highlight, dimming, search/filter */
.node[aria-pressed="true"] { border-color: var(--accent); box-shadow: var(--ring), var(--shadow-md); }
.diagram.has-selection .node:not(.is-related):not([aria-pressed="true"]) { opacity: 0.32; }
.node.is-upstream { border-color: var(--c-enablement); box-shadow: 0 0 0 2px var(--c-enablement) inset; }
.node.is-downstream { border-color: var(--c-ai-enablement); box-shadow: 0 0 0 2px var(--c-ai-enablement) inset; }
.node.is-related { opacity: 1; }
.diagram.is-filtering .node:not(.match) { opacity: 0.22; filter: grayscale(0.6); }
.node.search-hit { box-shadow: 0 0 0 2px var(--accent), var(--shadow-md); }

/* Connector arrow between data + model preparation */
.cross-arrow { display: grid; place-items: center; color: var(--text-faint); }
.cross-arrow svg { width: 56px; height: 44px; }

/* Vertical up-flow chevrons between bands */
.flow-up { display: grid; place-items: center; height: 8px; margin: -6px 0; color: var(--text-faint); opacity: 0.7; }
.flow-up svg { width: 22px; height: 14px; }

/* Semantic overlay mode */
.diagram.overlay-on .node { border-top-color: var(--sem-color, var(--layer-color)); }
.diagram.overlay-on .node .node-icon { background: color-mix(in srgb, var(--sem-color) 16%, transparent); color: var(--sem-color); }
.sem-badge { display: none; }
.diagram.overlay-on .sem-badge {
  display: inline-block; margin-top: 5px; font-size: 0.64rem; font-weight: 700; letter-spacing: 0.03em;
  padding: 2px 7px; border-radius: 20px; color: #fff; background: var(--sem-color); width: fit-content; text-transform: uppercase;
}
.diagram-hint { font-size: 0.82rem; color: var(--text-faint); margin: 16px 0 0; }

/* ----------------------------- Semantic flow ----------------------------- */
.semantic-flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; align-items: stretch; }
.sem-stage { position: relative; display: flex; }
.sem-card {
  position: relative; width: 100%; text-align: left; cursor: pointer; font: inherit; color: var(--text);
  background: var(--surface); border: 1px solid var(--border-strong); border-radius: var(--radius);
  border-top: 4px solid var(--sem-color); padding: 18px 16px; box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column; gap: 8px; margin: 0 9px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.sem-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.sem-step { font-size: 0.7rem; font-weight: 800; color: var(--sem-color); letter-spacing: 0.05em; }
.sem-card h3 { font-size: 1rem; }
.sem-card p { font-size: 0.82rem; color: var(--text-muted); margin: 0; }
.sem-tags { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 4px; }
.sem-tag { font-size: 0.68rem; padding: 2px 8px; border-radius: 20px; background: color-mix(in srgb, var(--sem-color) 14%, transparent); color: var(--sem-color); font-weight: 600; }
.sem-arrow { position: absolute; right: -13px; top: 50%; transform: translateY(-50%); z-index: 3; color: var(--sem-color); background: var(--bg-alt); border-radius: 50%; display: grid; place-items: center; width: 26px; height: 26px; }
.sem-stage:last-child .sem-arrow { display: none; }
.sem-arrow svg { width: 16px; height: 16px; }

/* Flowing particle animation along the top accent */
.sem-card::after {
  content: ""; position: absolute; left: 8%; right: 8%; top: -4px; height: 4px; border-radius: 4px; overflow: hidden;
  background: linear-gradient(90deg, transparent, var(--sem-color), transparent);
  background-size: 220% 100%; opacity: 0; transition: opacity var(--transition);
}
.semantic-flow.animate .sem-card::after { opacity: 0.9; animation: flow 2.4s linear infinite; animation-delay: var(--delay, 0s); }
@keyframes flow { from { background-position: 120% 0; } to { background-position: -120% 0; } }
@media (prefers-reduced-motion: reduce) { .semantic-flow.animate .sem-card::after { animation: none; } }

/* ------------------------------- Ontology -------------------------------- */
.onto-pillars { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 16px; }
.onto-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow-sm); border-top: 4px solid var(--c-semantic); }
.onto-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
.onto-card p { font-size: 0.86rem; color: var(--text-muted); margin: 0 0 12px; }
.chip-row { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { font-size: 0.72rem; padding: 3px 9px; border-radius: 20px; background: var(--accent-soft); color: var(--accent-strong); font-weight: 600; border: 1px solid transparent; }
.onto-card .chip { background: color-mix(in srgb, var(--c-semantic) 12%, transparent); color: var(--c-semantic); }
.onto-benefits { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; }
.benefit { background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 16px; }
.benefit h4 { margin: 0 0 6px; font-size: 0.95rem; display: flex; align-items: center; gap: 8px; }
.benefit h4::before { content: ""; width: 9px; height: 9px; border-radius: 50%; background: var(--c-semantic); flex-shrink: 0; }
.benefit p { margin: 0; font-size: 0.84rem; color: var(--text-muted); }

/* -------------------------------- Mapping -------------------------------- */
.table-scroll { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.mapping-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; background: var(--surface); min-width: 860px; }
.mapping-table th, .mapping-table td { padding: 11px 14px; text-align: left; border-bottom: 1px solid var(--border); vertical-align: top; }
.mapping-table thead th { background: var(--surface-2); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); position: sticky; top: 0; }
.mapping-table .th-center, .mapping-table td.cell-center { text-align: center; }
.mapping-table tbody tr { cursor: pointer; transition: background var(--transition); }
.mapping-table tbody tr:hover { background: var(--accent-soft); }
.map-name { font-weight: 650; color: var(--text); }
.map-sem { font-weight: 600; }
.map-consume, .map-produce { color: var(--text-muted); font-size: 0.8rem; }
.dot { display: inline-block; width: 16px; height: 16px; border-radius: 50%; line-height: 16px; font-size: 0.7rem; }
.dot.yes { color: #fff; }
.dot.no { color: var(--text-faint); }

/* ------------------------------ References ------------------------------- */
.reference-list { display: grid; gap: 10px; padding-left: 20px; }
.reference-list li { padding-left: 6px; }
.ref-title { font-weight: 600; color: var(--text); }
.ref-meta { color: var(--text-muted); font-size: 0.86rem; }
.ref-link { word-break: break-word; font-size: 0.84rem; }
.interpretation-note { margin-top: 22px; font-size: 0.85rem; color: var(--text-muted); background: var(--surface-2); border: 1px dashed var(--border-strong); padding: 12px 16px; border-radius: 10px; }

/* ------------------------------ Side panel ------------------------------- */
.panel-overlay { position: fixed; inset: 0; background: rgba(15, 20, 34, 0.5); z-index: 150; opacity: 0; transition: opacity var(--transition); }
.panel-overlay.show { opacity: 1; }
.detail-panel {
  position: fixed; top: 0; right: 0; height: 100dvh; width: min(460px, 94vw); z-index: 160;
  background: var(--surface); border-left: 1px solid var(--border); box-shadow: var(--shadow-lg);
  display: flex; flex-direction: column; transform: translateX(102%); transition: transform var(--transition);
}
.detail-panel.open { transform: translateX(0); }
.panel-header { padding: 22px 22px 16px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; gap: 14px; align-items: flex-start; }
.panel-layer-chip { display: inline-block; font-size: 0.68rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; padding: 3px 10px; border-radius: 20px; color: #fff; margin-bottom: 10px; }
#panel-title { font-size: 1.3rem; }
.panel-short { color: var(--text-muted); font-size: 0.9rem; margin: 8px 0 0; }
.panel-close { flex-shrink: 0; background: var(--surface-2); border: 1px solid var(--border-strong); border-radius: 10px; width: 38px; height: 38px; display: grid; place-items: center; cursor: pointer; color: var(--text); transition: all var(--transition); }
.panel-close:hover { background: var(--accent-soft); color: var(--accent-strong); border-color: var(--accent); }
.panel-body { padding: 20px 22px 40px; overflow-y: auto; }

.pblock { margin-bottom: 22px; }
.pblock h3 { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.07em; color: var(--text-faint); margin-bottom: 8px; font-weight: 800; }
.pblock p { margin: 0; font-size: 0.92rem; }
.pblock.plain p { background: var(--accent-soft); padding: 12px 14px; border-radius: 10px; }
.pblock ul { margin: 0; padding-left: 18px; font-size: 0.9rem; }
.pblock ul li { margin-bottom: 4px; }
.pgrid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.io-box { background: var(--surface-2); border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; }
.io-box h4 { margin: 0 0 7px; font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-faint); }
.io-box ul { padding-left: 16px; margin: 0; font-size: 0.83rem; color: var(--text-muted); }

.rel-chips { display: flex; flex-wrap: wrap; gap: 7px; }
.rel-chip { cursor: pointer; font: inherit; font-size: 0.78rem; font-weight: 600; padding: 5px 11px; border-radius: 20px; border: 1px solid var(--border-strong); background: var(--surface-2); color: var(--text); transition: all var(--transition); }
.rel-chip:hover { border-color: var(--accent); color: var(--accent-strong); background: var(--accent-soft); }
.rel-chip.up { border-left: 3px solid var(--c-enablement); }
.rel-chip.down { border-left: 3px solid var(--c-ai-enablement); }

.relevance-card { border: 1px solid var(--border); border-radius: 10px; padding: 13px 15px; margin-bottom: 10px; background: var(--surface-2); }
.relevance-card h4 { margin: 0 0 5px; font-size: 0.86rem; display: flex; align-items: center; gap: 8px; }
.relevance-card h4 .tag-dot { width: 9px; height: 9px; border-radius: 50%; }
.relevance-card p { font-size: 0.85rem; color: var(--text-muted); }
.relevance-card.ai h4 .tag-dot { background: var(--c-ai-enablement); }
.relevance-card.onto h4 .tag-dot { background: var(--c-semantic); }
.relevance-card.kg h4 .tag-dot { background: var(--c-service); }
.relevance-card.value h4 .tag-dot { background: var(--c-preparation); }

.sem-map-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 10px; }
.sem-flag { display: flex; align-items: center; gap: 7px; font-size: 0.8rem; padding: 7px 10px; border-radius: 9px; background: var(--surface-2); border: 1px solid var(--border); }
.sem-flag .mark { width: 18px; height: 18px; border-radius: 5px; display: grid; place-items: center; font-size: 0.7rem; flex-shrink: 0; }
.sem-flag.on .mark { background: var(--c-enablement); color: #fff; }
.sem-flag.off { color: var(--text-faint); }
.sem-flag.off .mark { background: var(--border); color: var(--text-faint); }

.panel-refs { display: grid; gap: 8px; }
.panel-ref { font-size: 0.82rem; border-left: 3px solid var(--accent); padding: 4px 0 4px 11px; }
.panel-ref a { font-weight: 600; }
.panel-ref .pr-meta { color: var(--text-muted); display: block; }

/* ------------------------------- Tooltip --------------------------------- */
.tooltip {
  position: fixed; z-index: 180; max-width: 280px; pointer-events: none;
  background: var(--text); color: var(--surface); padding: 9px 12px; border-radius: 9px;
  font-size: 0.8rem; line-height: 1.4; box-shadow: var(--shadow-lg); opacity: 0; transition: opacity 120ms;
}
.tooltip.show { opacity: 1; }
[data-theme="dark"] .tooltip { background: #e7ebf4; color: #0d111c; }

/* -------------------------------- Footer --------------------------------- */
.app-footer { border-top: 1px solid var(--border); background: var(--surface); }
.app-footer p { max-width: var(--maxw); margin: 0 auto; padding: 26px 24px; color: var(--text-muted); font-size: 0.85rem; }

/* ------------------------------ Responsive ------------------------------- */
@media (max-width: 860px) {
  :root { --header-h: 150px; }
  .diagram { min-width: 0; }
  .tracks.split { grid-template-columns: 1fr; }
  .track-connector { transform: rotate(90deg); height: 30px; }
  .cross-arrow { transform: rotate(90deg); }
  .semantic-flow { grid-template-columns: 1fr; gap: 26px; }
  .sem-card { margin: 0; }
  .sem-arrow { right: 50%; top: auto; bottom: -22px; transform: translateX(50%) rotate(90deg); }
  .cards.four, .cards.three, .cards.two { grid-template-columns: repeat(2, 1fr); }
  #search { width: 200px; }
}
@media (max-width: 560px) {
  .cards.four, .cards.three, .cards.two { grid-template-columns: 1fr; }
  .pgrid, .sem-map-grid { grid-template-columns: 1fr; }
  .section { padding: 40px 18px; }
  .header-tools .tool-btn span { display: none; }
  .header-tools .tool-btn { padding: 8px; }
}

/* High-contrast preference */
@media (prefers-contrast: more) {
  :root { --border: #9aa3b5; --border-strong: #6b7488; --text-muted: #394257; }
  .node, .layer-band, .sem-card { border-width: 2px; }
}

/* Print */
@media print {
  .app-header, .hero-nav, .diagram-toolbar, .panel-overlay, .detail-panel, .tooltip, .app-footer { display: none !important; }
  body { background: #fff; }
  .section { page-break-inside: avoid; }
}