/* Exploration Lab: standalone modules inside the existing discovery space. */
#lab-modules {
  --module-violet: #b7a8f0;
  --module-gold: #e9c585;
  --module-mint: #8bece0;
  --module-border: rgba(163, 186, 224, .24);
  --module-text: #e5eefc;
  --module-muted: #b8c8dc;
}
#lab-modules :is(#module-controls, #module-list, #module-stage, .module-mount, .exploration-demo) { min-width: 0; max-width: 100%; }
#lab-modules .section-intro { max-width: 66ch; }

/* Search and filters keep their ordinary keyboard and touch behavior. */
#module-controls { margin: 0 0 26px; }
#lab-modules :is(.module-search-field, .module-filters > label) {
  display: flex;
  flex-direction: column;
  gap: 9px;
  min-width: 0;
  margin-bottom: 19px;
  color: #c4d1e5;
  font-size: 16px;
  line-height: 1.6;
}
#lab-modules .module-filters { display: flex; flex-wrap: wrap; align-items: end; gap: 15px; }
#lab-modules .module-filters > label { flex: 1 1 220px; }
#lab-modules :is(#module-search, .module-filters input, .module-filters select) {
  display: block;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  min-height: 48px;
  padding: 11px 14px;
  border: 1px solid var(--module-border);
  border-radius: 4px;
  background: #0c1428;
  color: #e0eafd;
  font-size: 16px;
  line-height: 1.5;
}
#lab-modules input::placeholder { color: #93a9c4; }
#lab-modules :is(.module-category-filters, .module-filter-buttons) { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; }
#lab-modules :is(.module-filter, .module-category-filters button, .module-filters > button) {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  min-height: 44px;
  padding: 9px 15px;
  border: 1px solid var(--module-border);
  border-radius: 4px;
  color: #c1cde2;
  background: rgba(20, 29, 54, .6);
  font-size: 16px;
  line-height: 1.5;
  white-space: normal;
  word-break: normal;
}
#lab-modules :is(.module-filter, .module-category-filters button, .module-filters > button):is(:hover, .is-active, [aria-pressed="true"]) {
  color: #edfff9;
  border-color: rgba(139, 236, 224, .65);
  background: rgba(36, 82, 86, .35);
}
#lab-modules .module-result-count { margin-top: 17px; color: #a2b6d1; font-size: 14px; line-height: 1.8; }

/* Module cards are selection controls; the reading stage follows them. */
#module-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-bottom: 31px; }
#lab-modules .module-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-width: 0;
  width: 100%;
  padding: 23px 22px;
  border: 1px solid var(--module-border);
  border-radius: 5px;
  color: var(--module-text);
  background: linear-gradient(150deg, rgba(25, 33, 66, .7), rgba(11, 22, 40, .62));
  text-align: left;
  white-space: normal;
  word-break: normal;
  transition: border-color .2s, background .2s;
}
#lab-modules .module-card:hover { border-color: rgba(183, 168, 240, .65); }
#lab-modules .module-card:is(.is-active, [aria-selected="true"]) {
  border-color: rgba(139, 236, 224, .72);
  background: linear-gradient(150deg, rgba(35, 47, 78, .86), rgba(12, 40, 49, .68));
}
#lab-modules .module-card:is(.is-active, [aria-selected="true"])::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 22px;
  bottom: 22px;
  width: 3px;
  background: var(--module-mint);
  box-shadow: 0 0 14px rgba(139, 236, 224, .25);
}
#lab-modules :is(.module-card-type, .module-category) { display: block; margin-bottom: 11px; color: var(--module-violet); font-size: 14px; line-height: 1.8; }
#lab-modules :is(.module-card-title, .module-title) { display: block; color: #edf2ff; font-size: 23px; font-weight: 550; line-height: 1.45; letter-spacing: -.015em; }
#lab-modules :is(.module-card-summary, .module-summary) { display: block; margin-top: 13px; color: var(--module-muted); font-size: 18px; line-height: 1.8; }
#lab-modules .module-card-state { display: block; margin-top: auto; padding-top: 17px; color: var(--module-gold); font-size: 16px; line-height: 1.8; }
#lab-modules .module-card-state:empty { display: none; }
#lab-modules :is(.module-empty, .module-no-results) { grid-column: 1 / -1; padding-block: 20px; color: var(--module-muted); font-size: 18px; line-height: 1.8; }

/* The selected instrument has one frame and a clear explanatory layer. */
#module-stage { position: relative; padding: 27px 25px 30px; border: 1px solid var(--module-border); border-radius: 5px; background: linear-gradient(150deg, rgba(24, 32, 61, .8), rgba(8, 20, 35, .88)); scroll-margin-top: 114px; }
#lab-modules .module-stage-header { margin-bottom: 26px; padding-bottom: 24px; border-bottom: 1px solid var(--module-border); }
#lab-modules .module-stage-header h3 { color: #e8ecff; font-size: 29px; font-weight: 500; line-height: 1.4; letter-spacing: -.02em; }
#lab-modules .module-stage-header p { margin-top: 13px; max-width: 66ch; color: var(--module-muted); font-size: 18px; line-height: 1.85; }
#lab-modules .module-stage-source { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-top: 18px; color: #a8b9d1; font-size: 14px; line-height: 1.8; }
#lab-modules .module-stage-source a { display: inline-flex; align-items: center; min-height: 44px; color: var(--module-mint); font-size: 16px; line-height: 1.7; text-decoration: underline; text-decoration-color: rgba(139, 236, 224, .35); text-underline-offset: 5px; }
#lab-modules .module-host-status { margin-top: 21px; color: #acbfd8; font-size: 16px; line-height: 1.8; }
#lab-modules .module-host-status:empty { display: none; }
#lab-modules .module-retry { min-height: 44px; margin-top: 17px; padding: 10px 17px; color: var(--module-mint); border: 1px solid rgba(139, 236, 224, .5); border-radius: 4px; background: rgba(21, 48, 58, .55); font-size: 16px; line-height: 1.5; }
#lab-modules .module-mount { width: 100%; }
#lab-modules .exploration-demo { width: 100%; color: var(--module-text); }
#lab-modules .exploration-demo > h3 { margin-bottom: 13px; color: #e8efff; font-size: 25px; font-weight: 500; line-height: 1.45; }
#lab-modules .exploration-demo > p:not(.demo-note):not(.demo-position) { color: var(--module-muted); font-size: 18px; line-height: 1.85; }
#lab-modules .exploration-demo > .demo-controls { margin-top: 23px; }
#lab-modules .demo-position { margin: 0 0 18px; color: var(--module-gold); font-size: 16px; line-height: 1.8; }
#lab-modules :is(.demo-controls, .demo-actions, .module-step-controls, .gnn-node-buttons) { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-bottom: 21px; }
#lab-modules :is(.demo-controls, .demo-actions, .module-step-controls, .gnn-node-buttons) button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  max-width: 100%;
  min-width: 0;
  min-height: 46px;
  padding: 10px 15px;
  border: 1px solid var(--module-border);
  border-radius: 4px;
  color: #dce5f7;
  background: rgba(14, 27, 47, .8);
  font-size: 16px;
  line-height: 1.5;
  white-space: normal;
  word-break: normal;
}
#lab-modules :is(.demo-controls, .demo-actions, .module-step-controls, .gnn-node-buttons) button:is(:hover, .active, .is-active, [aria-pressed="true"], [aria-current="step"]) { color: #eafff9; border-color: var(--module-mint); background: rgba(30, 69, 74, .6); }
#lab-modules .demo-controls label { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; max-width: 100%; min-width: 0; color: #b7c8dc; font-size: 16px; line-height: 1.7; }
#lab-modules .demo-controls select { min-height: 46px; max-width: 100%; padding: 9px 12px; color: #e0eafa; background: #0c172a; border: 1px solid var(--module-border); border-radius: 4px; font-size: 16px; }
#lab-modules .demo-controls input[type="range"] { max-width: 100%; accent-color: var(--module-mint); }
#lab-modules .demo-checkbox input { width: 19px; height: 19px; margin: 0; accent-color: var(--module-mint); }
#lab-modules .demo-visual { position: relative; min-width: 0; max-width: 100%; margin-bottom: 23px; padding: 20px; border: 1px solid rgba(183, 168, 240, .23); border-radius: 4px; background: radial-gradient(ellipse at 74% 22%, rgba(86, 58, 130, .2), transparent 65%), linear-gradient(145deg, #0d172d, #081726); }
#lab-modules .demo-visual :is(svg, canvas) { display: block; max-width: 100%; }
#lab-modules .demo-visual > svg { width: 100%; height: auto; }
#lab-modules .demo-explanation { padding-top: 22px; border-top: 1px solid var(--module-border); }
#lab-modules :is(.demo-explanation h3, .module-reference-step h4) { margin-bottom: 12px; color: #e2ebfa; font-size: 23px; font-weight: 500; line-height: 1.5; }
#lab-modules :is(.demo-explanation p, .module-reference-step p) { max-width: 68ch; color: var(--module-muted); font-size: 18px; line-height: 1.9; }
#lab-modules :is(.demo-explanation p, .module-reference-step p) + p { margin-top: 14px; }
#lab-modules :is(.demo-note, .demo-legend, .demo-source) { margin-top: 16px; color: #a0b6d1; font-size: 14px; line-height: 1.85; }
#lab-modules .demo-legend { display: flex; flex-wrap: wrap; gap: 8px 18px; }
#lab-modules .demo-source a { color: var(--module-mint); text-decoration: underline; text-underline-offset: 4px; }
#lab-modules .module-reference-step { margin-top: 22px; padding-top: 19px; border-top: 1px solid var(--module-border); }
#lab-modules .module-reference-step + .module-step-controls { margin-top: 23px; }
#lab-modules .module-reference-source { margin-top: 17px; color: #b0c2d8; font-size: 14px; line-height: 1.8; }
#lab-modules .module-evidence-note { margin-top: 16px; color: #a4b7d0; font-size: 17px; line-height: 1.85; }
#lab-modules :is(button, input, select, a):focus-visible { outline: 3px solid var(--module-gold); outline-offset: 4px; }
#lab-modules button:disabled { cursor: not-allowed; opacity: .5; }

/* Arithmetic stays in DOM text; visual networks only carry short labels. */
#lab-modules .demo-metrics { display: flex; flex-wrap: wrap; gap: 18px 25px; margin-block: 20px; color: #bfd0e6; font-size: 18px; line-height: 1.8; }
#lab-modules .demo-metrics > * { min-width: 0; }
#lab-modules .demo-metrics strong { color: var(--module-gold); font-weight: 550; }
#lab-modules .cnn-matrices { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 25px 22px; }
#lab-modules .cnn-matrix-panel { min-width: 0; }
#lab-modules .cnn-matrix-panel h4 { margin-bottom: 13px; color: #cdd9ed; font-size: 20px; font-weight: 500; line-height: 1.5; }
#lab-modules .cnn-grid { display: grid; grid-template-columns: repeat(var(--matrix-size, 5), minmax(0, 1fr)); gap: 4px; width: 100%; max-width: 340px; }
#lab-modules .cnn-cell { display: grid; place-items: center; min-width: 0; min-height: 35px; aspect-ratio: 1; padding: 2px; border: 1px solid rgba(160, 191, 223, .24); border-radius: 3px; background: rgba(12, 27, 46, .88); color: #dbe8fb; font-size: 17px; line-height: 1.4; font-variant-numeric: tabular-nums; }
#lab-modules .cnn-cell.is-window { color: #e1fff8; border-color: rgba(139, 236, 224, .72); background: rgba(36, 91, 87, .57); }
#lab-modules .cnn-cell.is-active { color: #ffebc5; border-color: var(--module-gold); background: rgba(116, 82, 37, .56); }
#lab-modules .cnn-cell.is-padding { color: #a1a0bf; background: rgba(44, 36, 74, .4); border-style: dashed; }
#lab-modules .cnn-equation { margin-top: 24px; padding: 18px; border-left: 2px solid rgba(233, 197, 133, .7); color: #dfe7f8; background: rgba(83, 57, 110, .17); font-size: 18px; line-height: 1.85; }
#lab-modules :is(.cnn-equation, .cnn-pipeline, .gnn-calculation) h4 { margin-bottom: 11px; color: #dce7fb; font-size: 20px; font-weight: 500; line-height: 1.5; }
#lab-modules .cnn-equation > p { margin-top: 17px; }
#lab-modules .cnn-products { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin-top: 13px; }
#lab-modules .cnn-products > span { min-width: 0; padding: 8px; color: #bdcce3; background: rgba(9, 20, 38, .54); border: 1px solid rgba(163, 186, 224, .14); border-radius: 3px; font-size: 17px; line-height: 1.7; }
#lab-modules .cnn-pipeline { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; margin-block: 22px; color: #bad5ea; font-size: 17px; line-height: 1.7; }
#lab-modules .cnn-pipeline > span { min-width: 0; padding: 8px 11px; border: 1px solid rgba(183, 168, 240, .24); border-radius: 3px; background: rgba(25, 31, 63, .56); }
#lab-modules .cnn-pipeline > section { flex: 1 1 230px; min-width: 0; padding: 19px 0; border-top: 1px solid var(--module-border); }
#lab-modules .cnn-probabilities { display: grid; grid-template-columns: 1fr; gap: 12px; margin-block: 20px; color: #d3e5f4; font-size: 17px; line-height: 1.8; }
#lab-modules .gnn-demo .demo-visual > svg { width: min(280px, 100%); margin-inline: auto; }
#lab-modules .gnn-demo .demo-visual svg text { fill: #eef5ff; stroke: none; font-family: var(--body); font-size: 22px; font-weight: 550; }
#lab-modules .gnn-edge { stroke: #637fa8; stroke-width: 2; }
#lab-modules .gnn-edge.is-message { stroke: var(--module-gold); stroke-width: 3; }
#lab-modules .gnn-demo.is-running .gnn-edge.is-message { stroke-dasharray: 8 6; animation: module-message-flow 1.2s linear infinite; }
#lab-modules .gnn-node { cursor: pointer; }
#lab-modules .gnn-node > circle { fill: #172e49; stroke: #8fb9d7; stroke-width: 1.7; }
#lab-modules .gnn-node.is-target > circle { fill: #4d405b; stroke: var(--module-gold); stroke-width: 2.5; }
#lab-modules .gnn-node.is-neighbor > circle { fill: #174a4e; stroke: var(--module-mint); stroke-width: 2; }
#lab-modules .gnn-node:focus-visible { outline: none; }
#lab-modules .gnn-node:focus-visible > circle { stroke: #ffdda5; stroke-width: 4; }
#lab-modules .gnn-demo .demo-visual > h4 { margin-top: 21px; color: #d1def2; font-size: 20px; font-weight: 500; line-height: 1.5; }
#lab-modules .gnn-feature-table { display: grid; grid-template-columns: 1fr; gap: 8px; margin-block: 21px; color: #c1d2e7; font-size: 17px; line-height: 1.8; }
#lab-modules .gnn-feature-row { display: grid; grid-template-columns: minmax(80px, .6fr) minmax(0, 1fr); gap: 7px 18px; min-width: 0; padding: 11px 13px; border: 1px solid rgba(163, 186, 224, .18); border-radius: 3px; background: rgba(11, 25, 45, .64); }
#lab-modules .gnn-feature-row > * { min-width: 0; }
#lab-modules .gnn-feature-label { color: #d9e8fa; font-size: 16px; font-weight: 550; }
#lab-modules .gnn-feature-neighbors { grid-column: 1 / -1; color: #a6bdd5; font-size: 14px; line-height: 1.8; }
#lab-modules .gnn-feature-row.is-target { border-color: rgba(233, 197, 133, .55); }
#lab-modules .gnn-feature-row.is-neighbor { border-color: rgba(139, 236, 224, .36); }
#lab-modules .gnn-calculation { margin-block: 22px; padding: 18px; border-left: 2px solid var(--module-violet); background: rgba(62, 48, 101, .22); color: #d5e3f7; font-size: 18px; line-height: 1.85; }
#lab-modules .gnn-calculation dl { margin: 19px 0 0; }
#lab-modules .gnn-calculation dl > div { min-width: 0; padding-block: 13px; border-top: 1px solid rgba(163, 186, 224, .18); }
#lab-modules .gnn-calculation dt { color: #a9c5df; font-size: 16px; line-height: 1.7; }
#lab-modules .gnn-calculation dd { margin: 7px 0 0; }
#lab-modules .gnn-vector { display: inline; color: #d6f5ea; font-size: 17px; line-height: 1.85; font-variant-numeric: tabular-nums; white-space: normal; }
@keyframes module-message-flow { to { stroke-dashoffset: -28; } }

@media (min-width: 801px) and (max-width: 1100px) {
  #module-list { grid-template-columns: 1fr; }
  #module-stage { padding: 25px 20px; }
  #lab-modules .module-stage-header h3 { font-size: 27px; }
  #lab-modules .demo-visual { padding: 16px; }
  #lab-modules .cnn-matrices { grid-template-columns: 1fr; }
}
@media (max-width: 800px) {
  #module-list { gap: 14px; }
  #lab-modules :is(.module-card-summary, .module-summary, .module-stage-header p, .demo-explanation p, .module-reference-step p, .module-empty, .module-no-results) { font-size: 17px; }
  #lab-modules .module-card { padding: 21px 20px; }
  #lab-modules :is(.module-card-title, .module-title) { font-size: 22px; }
  #module-stage { padding: 25px 21px; scroll-margin-top: calc(var(--molecular-header, 76px) + var(--molecular-scene-height, 240px) + 20px); }
  #lab-modules .module-stage-header h3 { font-size: 27px; }
  #lab-modules .demo-visual { padding: 16px; }
  #lab-modules :is(.demo-metrics, .cnn-equation, .gnn-calculation) { font-size: 17px; }
  #lab-modules .exploration-demo > p:not(.demo-note):not(.demo-position) { font-size: 17px; }
}
@media (max-width: 480px) {
  #module-list { grid-template-columns: 1fr; margin-bottom: 26px; }
  #lab-modules .module-card { padding: 22px 19px; }
  #module-stage { padding: 23px 17px 25px; }
  #lab-modules .module-stage-header h3 { font-size: 25px; }
  #lab-modules .module-stage-header { margin-bottom: 22px; padding-bottom: 21px; }
  #lab-modules :is(.demo-controls, .demo-actions, .module-step-controls, .gnn-node-buttons) { gap: 9px; align-items: stretch; }
  #lab-modules :is(.demo-controls, .demo-actions, .module-step-controls, .gnn-node-buttons) button { flex: 1 1 120px; padding-inline: 12px; }
  #lab-modules .demo-controls label { flex-basis: 100%; }
  #lab-modules .demo-visual { padding: 13px; }
  #lab-modules :is(.demo-explanation h3, .module-reference-step h4) { font-size: 22px; }
  #lab-modules .cnn-matrices { grid-template-columns: 1fr; }
  #lab-modules .cnn-products { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  #lab-modules :is(.cnn-equation, .gnn-calculation) { padding: 15px 13px; }
  #lab-modules .gnn-feature-row { grid-template-columns: 1fr; gap: 4px; }
}
@media (max-width: 360px) {
  #module-stage { padding: 22px 14px; }
  #lab-modules .module-card { padding-inline: 17px; }
  #lab-modules .module-stage-header h3 { font-size: 24px; }
  #lab-modules :is(.demo-controls, .demo-actions, .module-step-controls, .gnn-node-buttons) button { flex-basis: 100%; }
  #lab-modules .demo-visual { padding: 10px; }
}
@media (prefers-reduced-motion: reduce) {
  #lab-modules *, #lab-modules *::before, #lab-modules *::after { animation: none !important; transition: none !important; }
}
@media print {
  #lab-modules { display: none !important; }
}