:root {
  --bg: #f5f2ec;
  --paper: #fffdf8;
  --ink: #1c2422;
  --muted: #64716e;
  --line: #d8d1c4;
  --blue: #2e6f95;
  --green: #49745d;
  --gold: #a66f1f;
  --rust: #a34737;
  --violet: #5f5c8a;
  --shadow: 0 14px 35px rgba(29, 33, 31, 0.12);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input,
textarea,
select {
  font: inherit;
}

button {
  border: 1px solid var(--line);
  background: #fbfaf5;
  color: var(--ink);
  border-radius: 7px;
  min-height: 36px;
  padding: 0 12px;
  cursor: pointer;
}

button:hover,
button:focus-visible {
  border-color: var(--blue);
}

:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
}

[hidden] { display: none !important; }

.piece-form .field-label { margin: 0; }
.save-status { margin-top: 12px; }
.save-status.is-error { color: var(--rust); }
.custom-actions, .connection-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.interactive-card { cursor: pointer; }
.interactive-card:focus-visible { outline: 3px solid var(--blue); outline-offset: -3px; }
.node:focus-visible circle { stroke: var(--blue); stroke-width: 5px; }
.fit-rating { color: var(--blue); font-weight: 800; }

#patternLabView.is-active { overflow: auto; }
#patternLabView .pattern-grid { max-height: none; overflow: visible; }

.app-shell {
  height: 100vh;
  min-height: 0;
  display: grid;
  grid-template-rows: auto 1fr;
}

.topbar {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 22px 14px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 253, 248, 0.92);
}

.title-block h1,
.list-header h2 {
  margin: 0;
  letter-spacing: 0;
}

.title-block h1 {
  font-size: clamp(1.35rem, 2vw, 1.9rem);
  line-height: 1.08;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.view-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tab.is-active,
.chip.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: #fffdf8;
}

.workspace {
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(230px, 290px) minmax(0, 1fr) minmax(280px, 350px);
}

.left-panel,
.right-panel {
  min-height: 0;
  overflow: auto;
  padding: 18px;
  background: #f9f7f1;
}

.left-panel {
  border-right: 1px solid var(--line);
}

.right-panel {
  border-left: 1px solid var(--line);
}

.main-panel {
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  background: var(--paper);
}

.control-section {
  padding: 0 0 18px;
  margin: 0 0 18px;
  border-bottom: 1px solid var(--line);
}

.section-title,
.field-label {
  display: block;
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.search-input,
.piece-form input,
.piece-form textarea,
.piece-form select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fffefa;
  color: var(--ink);
}

.search-input,
.piece-form input,
.piece-form select {
  height: 38px;
  padding: 0 10px;
}

.piece-form textarea {
  min-height: 88px;
  resize: vertical;
  padding: 10px;
}

.piece-form {
  display: grid;
  gap: 8px;
}

.chip-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  min-height: 32px;
  padding: 0 10px;
  font-size: 0.86rem;
}

.boundary-stack {
  display: grid;
  gap: 8px;
}

.file-link {
  display: block;
  color: var(--blue);
  text-decoration: none;
  font-weight: 700;
}

.file-link:hover,
.file-link:focus-visible {
  text-decoration: underline;
  outline: none;
}

.microcopy {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.35;
}

.view {
  display: none;
  height: 100%;
  min-height: 0;
}

.view[hidden] {
  display: none;
}

.view.is-active {
  display: block;
}

.workspace.is-simulating {
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr);
}

.workspace.is-simulating > .left-panel,
.workspace.is-simulating > .right-panel {
  display: none;
}

#simulationsView.is-active {
  overflow: auto;
}

.simulation-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 18px 24px;
  display: grid;
  gap: 16px;
}

.simulation-boundary {
  margin: 0;
  padding: 14px;
  background: #edf3f5;
  border-left: 4px solid var(--blue);
  line-height: 1.55;
}

.simulation-card {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fffefa;
  line-height: 1.5;
}

.simulation-card h3 { margin: 0 0 10px; }
.simulation-card h3:not(:first-child) { margin-top: 24px; }
.simulation-card h4 { margin: 16px 0 8px; }
.simulation-card summary { cursor: pointer; font-weight: 750; }
.simulation-card details { margin: 12px 0; }
.simulation-card button { min-height: 44px; }
.simulation-card button:disabled { opacity: 0.55; cursor: not-allowed; }

.simulation-fields {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  min-width: 0;
  padding: 0;
  margin: 0 0 14px;
  border: 0;
}

.simulation-fields legend { padding: 0 0 14px; font-weight: 800; }
.simulation-fields label { display: grid; gap: 6px; font-size: 0.9rem; font-weight: 650; min-width: 0; }
.simulation-fields input,
.simulation-fields select {
  width: 100%;
  min-width: 0;
  min-height: 44px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--paper);
  color: var(--ink);
}

.simulation-actions { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0; }
#simulationRun { background: var(--ink); color: var(--paper); }
#simulationResults { display: grid; gap: 16px; min-width: 0; }
.simulation-table-wrap { max-width: 100%; overflow-x: auto; border: 1px solid var(--line); border-radius: 6px; }
.simulation-table-wrap table { width: 100%; border-collapse: collapse; text-align: left; font-size: 0.88rem; }
.simulation-table-wrap th,
.simulation-table-wrap td { border-bottom: 1px solid var(--line); padding: 10px; }
.simulation-table-wrap td { white-space: nowrap; font-variant-numeric: tabular-nums; }
.simulation-table-wrap thead { background: #edf3f5; }
.simulation-table-wrap th[scope="row"] { min-width: 180px; font-weight: 650; }
.simulation-table-wrap button { text-align: left; width: 100%; }
.simulation-timeline { list-style: none; padding: 0; display: grid; gap: 10px; }
.simulation-timeline li { border-left: 3px solid var(--line); padding: 10px 12px; background: #f8f6f0; }
.simulation-timeline li.is-evidence { border-color: var(--blue); }
.simulation-timeline p { margin: 6px 0 0; }
.simulation-timeline .tag { margin: 4px 0 0 6px; }
#simulationTrace { overflow-wrap: anywhere; }
#simulationLearningStudy .microcopy { overflow-wrap: anywhere; }

#mapView.is-active {
  display: grid;
  grid-template-rows: auto minmax(320px, 1fr) auto;
}

.graph-toolbar {
  min-height: 52px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
}

.map-stats {
  min-width: 120px;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.35;
  padding-top: 8px;
}

.toolbar-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.toolbar-actions button {
  min-width: 42px;
}

.toolbar-actions button.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: #fffdf8;
}

.zoom-label {
  min-width: 44px;
  text-align: center;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 800;
}

.graph-frame {
  position: relative;
  min-height: 0;
  overflow: hidden;
}

#graphSvg {
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
  cursor: grab;
  background:
    linear-gradient(rgba(28, 36, 34, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(28, 36, 34, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
}

#graphSvg:active {
  cursor: grabbing;
}

.pan-controls {
  display: grid;
  grid-template-columns: auto minmax(110px, 1fr) auto minmax(110px, 1fr) auto;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  background: #fbfaf5;
}

.pan-controls label {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.pan-controls input[type="range"] {
  width: 100%;
  min-width: 0;
  accent-color: var(--blue);
}

.edge {
  stroke: rgba(70, 82, 78, 0.32);
  stroke-width: 1.5;
}

.edge.is-near {
  stroke: rgba(46, 111, 149, 0.72);
  stroke-width: 2.5;
}

.ring-guide {
  fill: none;
  stroke: rgba(31, 41, 51, 0.14);
  stroke-width: 1.5;
  vector-effect: non-scaling-stroke;
}

.ring-guide.is-lens {
  stroke-dasharray: 6 6;
}

.ring-legend {
  position: absolute;
  left: 10px;
  bottom: 10px;
  padding: 4px 10px;
  background: rgba(255, 253, 248, 0.94);
  border: 1px solid var(--line);
  border-radius: 6px;
  color: rgba(31, 41, 51, 0.75);
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1.45;
}

.ring-legend summary {
  cursor: pointer;
  min-height: 24px;
  display: flex;
  align-items: center;
}

.ring-legend ol {
  margin: 4px 0 2px;
  padding-left: 18px;
}

.ring-legend .is-lens::after {
  content: " (dashed)";
  font-weight: 500;
}

.node {
  cursor: grab;
}

.node:active {
  cursor: grabbing;
}

.node circle {
  stroke: #fffdf8;
  stroke-width: 2.5;
  filter: drop-shadow(0 5px 8px rgba(29, 33, 31, 0.18));
}

.node text {
  fill: var(--ink);
  paint-order: stroke;
  stroke: rgba(255, 253, 248, 0.92);
  stroke-width: 5px;
  stroke-linejoin: round;
  font-size: 12px;
  font-weight: 750;
  pointer-events: none;
}

.node.is-muted {
  opacity: 0.5;
}

.node.is-muted text {
  fill: var(--muted, #5f6b66);
}

.node.is-selected circle {
  stroke: var(--ink);
  stroke-width: 4;
}

.inspector {
  display: grid;
  gap: 14px;
}

.inspector h2,
.detail-block h3,
.route-box h3 {
  margin: 0;
}

.node-type {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-height: 26px;
  padding: 0 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: #fffefa;
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.summary {
  margin: 0;
  line-height: 1.5;
}

.detail-block {
  display: grid;
  gap: 8px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}

.detail-block h3 {
  font-size: 0.96rem;
}

.plain-list {
  margin: 0;
  padding-left: 18px;
  line-height: 1.42;
}

.route-box {
  margin-top: 18px;
  display: grid;
  gap: 10px;
}

.route-list {
  display: grid;
  gap: 8px;
}

.route-item,
.data-card,
.anchor-item,
.reference-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  padding: 12px;
}

.route-item {
  font-size: 0.86rem;
  line-height: 1.35;
}

.list-header {
  padding: 20px 22px 12px;
}

.list-header h2 {
  font-size: 1.16rem;
}

.list-header p {
  margin: 6px 0 0;
  color: var(--muted);
}

.item-grid,
.stack-list {
  display: grid;
  gap: 12px;
  padding: 0 22px 22px;
}

.item-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  overflow: auto;
  max-height: calc(100vh - 176px);
}

.pattern-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 12px;
  padding: 0 22px 14px;
  max-height: calc(100vh - 310px);
  overflow: auto;
}

.answer-signal-panel {
  padding: 0 22px 14px;
}

.answer-signal-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #f9f7f1;
  padding: 14px;
  display: grid;
  gap: 12px;
}

.answer-signal-intro h3,
.answer-vector h4,
.metric-heading h3 {
  margin: 0;
}

.answer-signal-intro p,
.answer-vector p,
.metric-basis {
  margin: 0;
  color: var(--muted);
  line-height: 1.42;
}

.answer-vector-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 10px;
}

.answer-vector {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  padding: 12px;
  display: grid;
  gap: 9px;
}

.metric-heading {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 10px;
}

.metric-heading span {
  flex: 0 0 auto;
  min-width: 54px;
  text-align: right;
  color: var(--blue);
  font-weight: 900;
}

.meter {
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: #e6ded1;
}

.meter span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--blue), var(--gold));
}

.metric-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.metric-row span {
  min-height: 24px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fffefa;
  padding: 3px 8px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
}

.project-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 12px;
  padding: 0 22px 22px;
  overflow: auto;
  max-height: calc(100vh - 176px);
}

.project-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  padding: 14px;
  display: grid;
  gap: 10px;
  align-content: start;
}

.project-wide {
  grid-column: 1 / -1;
}

.project-card h3 {
  margin: 0;
  font-size: 1rem;
}

.project-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.45;
}

.definition-list,
.separation-grid {
  display: grid;
  gap: 10px;
}

.separation-grid {
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}

.definition-list article,
.separation-grid article {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #f9f7f1;
  padding: 10px;
}

.definition-list strong,
.separation-grid strong {
  display: block;
  margin-bottom: 5px;
}

.definition-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 10px;
  padding: 0 22px 14px;
}

.definition-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #f9f7f1;
  padding: 10px;
}

.definition-item h3 {
  margin: 0 0 5px;
  font-size: 0.88rem;
}

.definition-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.36;
}

.split-view {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 12px;
  height: 100%;
  overflow: auto;
}

.data-card {
  display: grid;
  gap: 10px;
  align-content: start;
}

.data-card h3,
.anchor-item h3,
.reference-item h3 {
  margin: 0;
  font-size: 1rem;
}

.data-card p,
.anchor-item p,
.reference-item p {
  margin: 0;
  color: var(--muted);
  line-height: 1.42;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0 8px;
  border-radius: 999px;
  background: #efe8d9;
  color: #5d5342;
  font-size: 0.76rem;
  font-weight: 750;
}

.source-tag {
  background: #e7f0ec;
  color: #315d48;
}

.reference-tag {
  background: #eee9f0;
  color: #5f4f78;
}

.direction-tag {
  background: #e1edf2;
  color: #2e5d74;
}

.pattern-tag {
  background: #ece7d8;
  color: #6d4f19;
}

.next-step-card,
.pattern-card {
  cursor: pointer;
}

.next-step-card:hover,
.next-step-card:focus-within,
.pattern-card:hover,
.pattern-card:focus-within {
  border-color: var(--blue);
  box-shadow: 0 8px 20px rgba(29, 33, 31, 0.08);
}

.schema-panel {
  padding: 0 22px 22px;
}

.schema-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #f9f7f1;
  padding: 14px;
  display: grid;
  grid-template-columns: minmax(220px, 0.45fr) minmax(0, 0.55fr);
  gap: 12px;
}

.schema-card h3 {
  margin: 0 0 6px;
  font-size: 1rem;
}

.schema-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.42;
}

.schema-card pre {
  margin: 0;
  overflow: auto;
  white-space: pre-wrap;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  padding: 10px;
  color: #38423f;
  font-size: 0.82rem;
  line-height: 1.35;
}

.term-key-grid {
  display: grid;
  gap: 14px;
  padding: 0 22px 22px;
  overflow: auto;
  max-height: calc(100vh - 176px);
}

.term-group {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #f9f7f1;
  padding: 14px;
  display: grid;
  gap: 12px;
}

.term-group h3 {
  margin: 0;
  font-size: 1rem;
}

.term-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 10px;
}

.term-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  padding: 12px;
  display: grid;
  gap: 8px;
}

.term-item h4,
.term-item p,
.term-item dl,
.term-item dd {
  margin: 0;
}

.term-item h4 {
  font-size: 0.96rem;
}

.term-item p,
.term-item dd {
  color: var(--muted);
  line-height: 1.4;
}

.term-item dl {
  display: grid;
  gap: 5px;
}

.term-item dt {
  color: var(--gold);
  font-size: 0.76rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

@media (max-width: 1040px) {
  .workspace {
    grid-template-columns: 250px minmax(0, 1fr);
    grid-template-rows: minmax(0, 1fr) auto;
  }

  .right-panel {
    grid-column: 1 / -1;
    border-left: none;
    border-top: 1px solid var(--line);
    max-height: 360px;
  }
}

@media (max-width: 760px) {
  #simulationsView.is-active {
    height: auto;
    overflow: visible;
  }

  .simulation-content { padding: 0 10px 20px; }
  .simulation-card { padding: 12px; }
  .simulation-fields { grid-template-columns: minmax(0, 1fr); }
  .simulation-table-wrap table,
  .simulation-table-wrap tbody { display: block; }
  .simulation-table-wrap thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
  }
  .simulation-table-wrap tbody tr {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    border-bottom: 2px solid var(--line);
  }
  .simulation-table-wrap th[scope="row"] {
    grid-column: 1 / -1;
    min-width: 0;
    background: #edf3f5;
  }
  .simulation-table-wrap td { white-space: normal; }
  .simulation-table-wrap td::before {
    content: attr(data-label);
    display: block;
    margin-bottom: 4px;
    color: var(--muted);
    font-size: 0.8rem;
    font-weight: 700;
  }

  .app-shell {
    height: auto;
    min-height: 100vh;
  }

  .topbar {
    align-items: start;
    flex-direction: column;
  }

  .workspace {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }

  .main-panel {
    order: -1;
  }

  .left-panel,
  .right-panel {
    max-height: none;
    border: none;
    border-bottom: 1px solid var(--line);
  }

  #mapView.is-active {
    height: min(78vh, 720px);
    min-height: 520px;
    grid-template-rows: auto minmax(260px, 1fr) auto;
  }

  .graph-toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .toolbar-actions button {
    flex: 1 1 auto;
  }

  .graph-frame {
    min-height: 260px;
  }

  .pan-controls {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .pan-controls button {
    grid-column: 1 / -1;
  }

  .split-view {
    grid-template-columns: 1fr;
  }

  .project-layout {
    grid-template-columns: 1fr;
  }

  .schema-card {
    grid-template-columns: 1fr;
  }
}