:root {
  color-scheme: light;
  --bg: #f7f9f8;
  --surface: #ffffff;
  --surface-2: #edf3f0;
  --ink: #18211d;
  --muted: #5e6864;
  --line: #d8e2dd;
  --accent: #0f766e;
  --accent-dark: #0b544f;
  --warn: #9a3412;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

a {
  color: var(--accent);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

button,
.button,
select {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  font-weight: 650;
  padding: 8px 12px;
  max-width: 100%;
  min-width: 0;
  text-align: center;
  overflow-wrap: anywhere;
}

button:hover,
.button:hover,
select:hover {
  border-color: var(--accent);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

select:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.primary:hover {
  background: var(--accent-dark);
}

input[type="file"] {
  display: none;
}

.topbar {
  display: flex;
  gap: 24px;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  background: rgba(247, 249, 248, 0.96);
  padding: 14px max(20px, calc((100vw - 1180px) / 2));
  position: sticky;
  top: 0;
  z-index: 5;
}

.brand {
  color: var(--ink);
  font-weight: 750;
  text-decoration: none;
}

nav {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

nav a {
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 650;
  text-decoration: none;
}

nav a[aria-current="page"] {
  color: var(--accent);
}

.app-shell {
  width: min(1180px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 28px 0 40px;
}

.toolbar,
.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  font-size: 1.55rem;
  margin-bottom: 4px;
}

h2 {
  font-size: 1rem;
  margin-bottom: 14px;
}

p,
#run-status {
  color: var(--muted);
}

.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
  min-width: 0;
}

.actions select {
  flex: 1 1 340px;
  text-align: left;
}

.sample-menu {
  display: none;
  min-width: 0;
}

.sample-menu summary {
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  cursor: pointer;
  font-weight: 650;
  list-style: none;
  padding: 8px 12px;
  text-align: center;
}

.sample-menu summary::-webkit-details-marker {
  display: none;
}

.sample-menu[open] summary {
  border-color: var(--accent);
}

.sample-list {
  display: grid;
  gap: 8px;
  max-height: min(52vh, 440px);
  overflow: auto;
  padding-top: 10px;
}

.sample-choice {
  display: grid;
  gap: 2px;
  justify-items: start;
  min-height: 0;
  text-align: left;
}

.sample-choice-title {
  font-weight: 700;
}

.sample-choice-meta,
.sample-list-status {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 500;
}

.model-tabs-panel {
  margin-top: 18px;
  padding: 14px 18px;
}

.model-tabs-panel h2 {
  margin-bottom: 10px;
}

.workspace {
  margin-top: 18px;
}

.panel {
  padding: 18px;
}

.panel-heading {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: baseline;
}

.model-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.model-tab {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: grid;
  gap: 2px;
  justify-items: start;
  min-height: 56px;
  min-width: 180px;
  padding: 9px 12px;
  text-align: left;
}

.model-tab.is-active {
  background: var(--surface-2);
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent);
}

.model-tab strong {
  display: block;
  line-height: 1.2;
}

.model-tab span {
  color: var(--muted);
  display: block;
  font-size: 0.86rem;
}

.explorer-panel {
  margin-top: 18px;
}

.explorer-heading {
  align-items: center;
  margin-bottom: 14px;
}

.ancestry-control {
  align-items: center;
  display: flex;
  gap: 8px;
  min-width: 0;
}

.ancestry-control span {
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 750;
  text-transform: uppercase;
}

.ancestry-control select {
  max-width: min(420px, 100%);
  text-align: left;
}

.explorer-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(320px, 0.95fr) minmax(360px, 1.05fr);
  margin-bottom: 18px;
}

.explorer-side {
  display: grid;
  gap: 14px;
  min-width: 0;
}

.explorer-summary .metrics {
  margin-bottom: 10px;
}

.explorer-summary .metric strong {
  overflow-wrap: anywhere;
}

.member-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.member-chip {
  background: #e0f2fe;
  border: 1px solid #bae6fd;
  border-radius: 999px;
  color: #075985;
  font-size: 0.82rem;
  font-weight: 750;
  padding: 3px 8px;
}

.feature-match-summary {
  align-items: center;
  background: #f5f3ff;
  border: 1px solid #c4b5fd;
  border-radius: var(--radius);
  color: #4c1d95;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin-top: 10px;
  padding: 8px 10px;
}

.feature-match-summary span {
  color: #6d28d9;
  font-size: 0.84rem;
}

.feature-match-summary strong {
  overflow-wrap: anywhere;
}

.feature-match-summary button {
  margin-left: auto;
  min-height: 30px;
  padding: 4px 9px;
}

.distinctive-panel {
  border-top: 1px solid var(--line);
  margin-top: 16px;
  padding-top: 12px;
}

.distinctive-panel h3,
.feature-matrix-section h3 {
  font-size: 0.95rem;
  margin-bottom: 10px;
}

.distinctive-panel p {
  margin-bottom: 0;
}

.distinctive-list {
  display: grid;
  gap: 7px;
}

.distinctive-row {
  align-items: center;
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 8px;
  grid-template-columns: 28px minmax(120px, 1.15fr) minmax(58px, 0.45fr) minmax(92px, 0.6fr) minmax(92px, 0.6fr) minmax(70px, 0.45fr);
  padding: 7px 0;
}

.distinctive-row.feature-pick {
  cursor: pointer;
}

.distinctive-row.feature-pick:hover,
.distinctive-row.feature-pick:focus {
  background: #f5f3ff;
  outline: 2px solid #c4b5fd;
  outline-offset: -2px;
}

.distinctive-row.is-selected-feature {
  background: #ede9fe;
}

.distinctive-row strong,
.distinctive-row span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.distinctive-row span {
  color: var(--muted);
  font-size: 0.84rem;
}

.distinctive-rank {
  align-items: center;
  background: #fef3c7;
  border-radius: 999px;
  color: #78350f;
  display: inline-flex;
  font-weight: 800;
  height: 24px;
  justify-content: center;
  width: 24px;
}

.matrix-heading {
  align-items: baseline;
  display: flex;
  gap: 12px;
  justify-content: space-between;
}

.matrix-heading span {
  color: var(--muted);
  font-size: 0.86rem;
}

.feature-matrix-wrap {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  max-height: min(66vh, 660px);
  overflow: auto;
}

.feature-matrix {
  font-size: 0.82rem;
  min-width: 1320px;
}

.feature-matrix th,
.feature-matrix td {
  background: var(--surface);
  padding: 6px 8px;
  white-space: nowrap;
}

.feature-matrix thead th {
  background: #eef7f4;
  position: sticky;
  top: 0;
  z-index: 3;
}

.feature-matrix .sticky-col {
  position: sticky;
}

.feature-matrix .witness-col {
  left: 0;
  min-width: 88px;
  width: 88px;
  z-index: 4;
}

.feature-matrix .path-col {
  left: 88px;
  min-width: 146px;
  width: 146px;
  z-index: 4;
}

.feature-matrix tbody .sticky-col {
  z-index: 2;
}

.feature-matrix thead .sticky-col {
  z-index: 5;
}

.feature-heading {
  min-width: 84px;
  max-width: 118px;
}

.feature-pick {
  cursor: pointer;
}

.feature-heading.feature-pick:hover,
.feature-heading.feature-pick:focus,
.feature-cell.feature-pick:hover,
.feature-cell.feature-pick:focus {
  outline: 2px solid #a78bfa;
  outline-offset: -2px;
}

.feature-heading span {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
}

.feature-heading.is-distinctive,
.feature-cell.is-distinctive {
  background: #fff7ed;
}

.feature-cell.has-distinctive-state {
  background: #fed7aa;
  color: #7c2d12;
  font-weight: 800;
}

.feature-heading.is-selected-feature,
.feature-cell.is-selected-feature {
  background: #f5f3ff;
}

.feature-cell.has-selected-feature-state {
  background: #ddd6fe;
  color: #4c1d95;
  font-weight: 850;
}

.matrix-row.has-selected-feature-state th,
.matrix-row.has-selected-feature-state td {
  box-shadow: inset 0 -2px 0 #a78bfa;
}

.matrix-row.is-member th,
.matrix-row.is-member td {
  background: #ecfeff;
}

.matrix-row.is-member .feature-cell.has-distinctive-state {
  background: #fbbf24;
  color: #422006;
}

.matrix-row.is-member .feature-cell.has-selected-feature-state {
  background: #c4b5fd;
  color: #2e1065;
}

.result-group {
  border-top: 1px solid var(--line);
  padding-top: 16px;
  margin-top: 16px;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(120px, 1fr));
  gap: 10px;
  margin-bottom: 14px;
}

.metrics.compact {
  grid-template-columns: repeat(4, minmax(92px, 1fr));
}

.metric {
  background: var(--surface-2);
  border-radius: var(--radius);
  padding: 10px;
}

.metric span {
  color: var(--muted);
  display: block;
  font-size: 0.82rem;
}

.metric strong {
  display: block;
  font-size: 1.05rem;
}

.table-wrap {
  overflow-x: auto;
}

table {
  border-collapse: collapse;
  min-width: 720px;
  width: 100%;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 8px 9px;
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 750;
  text-transform: uppercase;
}

.compact-table {
  min-width: 640px;
}

.node-row {
  cursor: pointer;
}

.node-row:hover,
.node-row:focus,
.node-row.is-selected {
  background: var(--surface-2);
  outline: none;
}

.tree-detail-grid {
  display: grid;
  grid-template-columns: minmax(320px, 0.9fr) minmax(360px, 1.1fr);
  gap: 16px;
  margin-bottom: 16px;
}

.tree-detail-grid.is-tree-hidden {
  grid-template-columns: 1fr;
}

.tree-shell {
  min-width: 0;
}

.tree-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
}

.tree-toolbar button {
  min-height: 32px;
  padding: 5px 10px;
}

.tree-wrap {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: grab;
  min-height: 260px;
  overflow: auto;
  padding: 10px;
  touch-action: none;
  user-select: none;
}

.tree-wrap.is-panning {
  cursor: grabbing;
}

.explorer-tree-wrap {
  max-height: min(58vh, 560px);
}

.tree-svg {
  display: block;
  min-width: 100%;
}

.tree-link {
  fill: none;
  stroke: #b8c8c1;
  stroke-width: 1.4;
}

.tree-link-hit-area {
  cursor: pointer;
  fill: none;
  pointer-events: stroke;
  stroke: transparent;
  stroke-width: 16;
}

.explorer-tree-link {
  pointer-events: stroke;
}

.tree-link.is-highlighted {
  stroke: var(--accent);
  stroke-width: 2.4;
}

.tree-link.is-feature-highlighted {
  stroke: #7c3aed;
  stroke-dasharray: 4 3;
  stroke-width: 2.3;
}

.tree-hit-area {
  fill: transparent;
  pointer-events: all;
  stroke: transparent;
}

.tree-node circle,
.tree-node rect:not(.tree-hit-area) {
  fill: var(--surface);
  stroke: #8da39a;
  stroke-width: 1.6;
}

.tree-node .tree-hit-area {
  fill: transparent;
  stroke: transparent;
}

.tree-node.is-unmarked circle {
  fill: #fff7ed;
  stroke: var(--warn);
}

.tree-node.is-selected circle,
.tree-node.is-member rect:not(.tree-hit-area) {
  fill: var(--accent);
  stroke: var(--accent-dark);
}

.tree-node.is-feature-match circle,
.tree-node.is-feature-carrier rect:not(.tree-hit-area) {
  fill: #ddd6fe;
  stroke: #6d28d9;
  stroke-width: 2.5;
}

.tree-node text {
  fill: var(--muted);
  font-size: 11px;
  font-weight: 650;
}

.tree-node.is-selected text,
.tree-node.is-member text {
  fill: var(--ink);
  font-weight: 800;
}

.tree-node.is-feature-match text,
.tree-node.is-feature-carrier text {
  fill: #4c1d95;
  font-weight: 850;
}

.explorer-tree-node.is-clickable {
  cursor: pointer;
}

.explorer-tree-node.is-clickable:hover circle,
.explorer-tree-node.is-clickable:focus circle,
.explorer-tree-node.is-clickable:hover rect:not(.tree-hit-area),
.explorer-tree-node.is-clickable:focus rect:not(.tree-hit-area) {
  stroke: var(--accent);
  stroke-width: 2.2;
}

.prediction-detail h4 {
  font-size: 0.92rem;
  margin: 0 0 10px;
}

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

.equation-card {
  border-top: 1px solid var(--line);
  padding-top: 8px;
}

.equation-card summary {
  cursor: pointer;
  font-weight: 700;
}

.equation-card code {
  display: block;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.78rem;
  margin-top: 7px;
  overflow-x: auto;
  white-space: nowrap;
}

.equation-card span {
  color: var(--muted);
  display: block;
  font-size: 0.78rem;
  margin-top: 4px;
}

.error {
  color: var(--warn);
  font-weight: 650;
}

@media (max-width: 820px) {
  .topbar,
  .toolbar,
  .panel-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .workspace {
    margin-top: 14px;
  }

  .model-tab {
    min-width: min(100%, 172px);
  }

  .actions {
    justify-content: flex-start;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: 100%;
  }

  .actions select {
    grid-column: 1 / -1;
    width: 100%;
  }

  .actions select,
  #load-sample {
    display: none;
  }

  .sample-menu {
    display: block;
    grid-column: 1 / -1;
    width: 100%;
  }

  .sample-menu summary {
    width: 100%;
  }

  .metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .explorer-grid {
    grid-template-columns: 1fr;
  }

  .ancestry-control {
    align-items: stretch;
    flex-direction: column;
    width: 100%;
  }

  .ancestry-control select {
    max-width: 100%;
    width: 100%;
  }

  .distinctive-row {
    grid-template-columns: 28px minmax(120px, 1fr);
  }

  .distinctive-row span:not(.distinctive-rank) {
    grid-column: 2;
  }

  .matrix-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 2px;
  }

  .feature-matrix-wrap {
    max-height: 62vh;
  }

  .tree-detail-grid {
    grid-template-columns: 1fr;
  }
}