body.page-algorithms .eyebrow {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.86rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

body.page-algorithms .eyebrow a {
  color: inherit;
  text-decoration: none;
}

.growth-ladder {
  display: flex;
  align-items: center;
  gap: 7px;
  overflow-x: auto;
  margin: 16px 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.growth-ladder span {
  flex: 0 0 auto;
  padding: 6px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel-alt);
  white-space: nowrap;
}

.growth-ladder span + span::before {
  content: "<";
  margin-right: 14px;
  color: var(--muted);
}

.page-algorithms pre {
  overflow-x: auto;
  margin: 10px 0;
  padding: 13px 15px;
  border-radius: var(--radius);
  background: var(--code);
  line-height: 1.45;
}

.page-algorithms pre code {
  padding: 0;
  background: transparent;
}

.sorting-table {
  min-width: 980px !important;
  font-variant-numeric: tabular-nums;
}

.sorting-table th:first-child {
  position: sticky;
  left: 0;
  z-index: 2;
  background: var(--panel);
}

.sorting-table tbody th {
  text-align: left;
  white-space: nowrap;
}

.property {
  display: inline-block;
  padding: 3px 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
  white-space: nowrap;
}

.property--yes {
  border-color: color-mix(in srgb, #24804a 35%, var(--line));
  background: color-mix(in srgb, #24804a 10%, var(--panel));
  color: color-mix(in srgb, #24804a 80%, var(--text));
}

:root[data-theme="dark"] .property--yes {
  color: #8ed5a8;
}

.property--no {
  border-color: color-mix(in srgb, #aa4038 30%, var(--line));
  background: color-mix(in srgb, #aa4038 8%, var(--panel));
}

.property--depends {
  background: var(--panel-alt);
  color: var(--muted);
}

.table-notes {
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.9rem;
}

.table-notes p {
  margin: 5px 0;
}

.algorithm-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 14px;
}

.algorithm-card {
  position: relative;
  min-height: 190px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.algorithm-card h4 {
  margin: 18px 0 8px;
  font-size: 1.15rem;
}

.algorithm-card p {
  margin: 0 0 16px;
  color: var(--muted);
}

.algorithm-card__complexity {
  position: absolute;
  top: 14px;
  right: 14px;
  margin: 0 !important;
  color: var(--accent) !important;
  font-size: 0.82rem;
  font-weight: 700;
}

.algorithm-card__link {
  font-weight: 700;
}

.decision-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}

.decision-grid article {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 15px 17px;
  background: var(--panel);
}

.decision-grid span {
  color: var(--muted);
  font-size: 0.9rem;
}

.definition-list {
  display: grid;
  gap: 1px;
  overflow: hidden;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}

.definition-list div {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 16px;
  padding: 15px 17px;
  background: var(--panel);
}

.definition-list dt {
  font-weight: 700;
}

.definition-list dd {
  margin: 0;
  color: var(--muted);
}

.algorithm-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 1px;
  max-width: 800px;
  overflow: hidden;
  margin-top: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}

.algorithm-facts > span {
  display: flex;
  flex: 1 1 145px;
  flex-direction: column;
  padding: 12px 15px;
  background: var(--panel);
}

.algorithm-facts small {
  color: var(--muted);
}

.algorithm-facts strong {
  font-variant-numeric: tabular-nums;
}

.sort-visualizer {
  overflow: hidden;
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.visualizer-inputs {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) auto;
  gap: 18px;
  align-items: end;
  padding: 18px;
  border-bottom: 1px solid var(--line);
}

.input-field label {
  display: block;
  margin-bottom: 6px;
  font-weight: 700;
}

.input-field__row {
  display: flex;
  gap: 7px;
}

.input-field input {
  width: 100%;
  min-width: 0;
  min-height: 43px;
  padding: 8px 11px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
}

.sort-visualizer button {
  min-height: 39px;
  padding: 7px 11px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--panel-alt);
  color: var(--text);
  cursor: pointer;
  font: inherit;
  font-weight: 650;
}

.sort-visualizer button:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
}

.sort-visualizer button:focus-visible,
.sort-visualizer input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.sort-visualizer button:disabled {
  cursor: not-allowed;
  opacity: 0.38;
}

.field-help,
.input-error {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.input-error {
  color: #a53832;
  font-weight: 700;
}

:root[data-theme="dark"] .input-error {
  color: #ff9b91;
}

.visualizer-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: flex-end;
}

.visualizer-stage {
  min-width: 0;
  padding: 20px 18px 12px;
  background: linear-gradient(to bottom, var(--panel-alt), var(--panel));
}

.array-chart {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: clamp(3px, 1vw, 10px);
  min-height: 330px;
  padding: 12px 4px 0;
  border-bottom: 1px solid var(--line);
}

.array-bar {
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto auto;
  flex: 1 1 54px;
  align-items: end;
  max-width: 72px;
  min-width: 19px;
  text-align: center;
}

.array-bar__column {
  width: 100%;
  height: var(--bar-height);
  min-height: 12px;
  border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--line));
  border-radius: 5px 5px 0 0;
  background: color-mix(in srgb, var(--accent) 20%, var(--panel));
  transition: height 180ms ease, background-color 140ms ease, border-color 140ms ease;
}

.array-bar.is-active .array-bar__column {
  background: color-mix(in srgb, var(--accent) 34%, var(--panel));
}

.array-bar.is-sorted .array-bar__column {
  border-color: color-mix(in srgb, #278651 55%, var(--line));
  background: color-mix(in srgb, #278651 42%, var(--panel));
}

.array-bar.is-special .array-bar__column {
  border-color: color-mix(in srgb, #c17b16 65%, var(--line));
  background: color-mix(in srgb, #e2a13f 60%, var(--panel));
}

.array-bar.is-compared .array-bar__column {
  border-color: color-mix(in srgb, #bc4942 70%, var(--line));
  background: color-mix(in srgb, #d45b54 62%, var(--panel));
}

.array-bar__value {
  padding-top: 5px;
  overflow: hidden;
  font-size: clamp(0.72rem, 1.8vw, 0.96rem);
  font-weight: 700;
  line-height: 1.1;
  text-overflow: ellipsis;
}

.array-bar__value small {
  margin-left: 1px;
  color: var(--accent);
  font-size: 0.68em;
  vertical-align: super;
}

.array-bar__index {
  color: var(--muted);
  font-size: 0.7rem;
}

.auxiliary-view {
  display: flex;
  gap: 9px;
  overflow-x: auto;
  margin-top: 13px;
  padding-bottom: 4px;
}

.aux-group,
.aux-counts {
  flex: 0 0 auto;
  min-width: 92px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--panel);
}

.aux-group > strong,
.aux-counts > strong {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.77rem;
}

.aux-items,
.aux-counts__row {
  display: flex;
  gap: 4px;
}

.aux-items span,
.aux-counts__row span {
  display: inline-flex;
  min-width: 29px;
  min-height: 29px;
  align-items: center;
  justify-content: center;
  padding: 3px 5px;
  border-radius: 5px;
  background: var(--accent-soft);
  font-size: 0.82rem;
  font-weight: 700;
}

.aux-items .aux-empty {
  background: var(--panel-alt);
  color: var(--muted);
}

.aux-counts {
  max-width: 100%;
}

.aux-counts__row {
  overflow-x: auto;
  max-width: min(750px, 75vw);
}

.aux-counts__row span {
  flex-direction: column;
  line-height: 1.15;
}

.aux-counts__row small {
  color: var(--muted);
  font-weight: 400;
}

.merge-tree-panel {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.merge-tree-panel__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.merge-tree-panel__header span {
  color: var(--muted);
  font-size: 0.78rem;
}

.merge-tree {
  overflow-x: auto;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.merge-tree:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.merge-tree svg {
  display: block;
  margin: 0 auto;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

.merge-tree-layer-label {
  fill: var(--muted);
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.merge-tree-arrow {
  fill: var(--muted);
}

.merge-tree-edge {
  fill: none;
  stroke: var(--muted);
  stroke-width: 1.25;
  opacity: 0.12;
  transition: opacity 180ms ease, stroke 180ms ease, stroke-width 180ms ease;
  vector-effect: non-scaling-stroke;
}

.merge-tree-edge.is-visible {
  opacity: 0.58;
}

.merge-tree-edge.is-active {
  stroke: var(--accent);
  stroke-width: 2;
  opacity: 1;
}

.merge-tree-edge.is-complete {
  stroke: #278651;
  opacity: 0.78;
}

.merge-tree-node {
  transition: opacity 180ms ease;
}

.merge-tree-node rect {
  fill: var(--panel);
  stroke: color-mix(in srgb, var(--muted) 75%, var(--line));
  stroke-width: 1.1;
  transition: fill 180ms ease, stroke 180ms ease, stroke-width 180ms ease;
  vector-effect: non-scaling-stroke;
}

.merge-tree-node text {
  fill: var(--text);
  font-size: 11px;
  font-weight: 650;
  pointer-events: none;
}

.merge-tree-node text.is-placeholder {
  fill: var(--muted);
}

.merge-tree-node.is-undiscovered {
  opacity: 0.14;
}

.merge-tree-node--merge.is-pending {
  opacity: 0.38;
}

.merge-tree-node--merge.is-pending rect {
  fill: var(--panel-alt);
  stroke-dasharray: 3 3;
}

.merge-tree-node.is-active rect {
  fill: var(--accent-soft);
  stroke: var(--accent);
  stroke-width: 2;
}

.merge-tree-node--merge.is-complete rect {
  fill: color-mix(in srgb, #59c84f 32%, var(--panel));
  stroke: color-mix(in srgb, #278651 75%, var(--line));
  stroke-width: 1.4;
}

.visualizer-status {
  display: flex;
  min-height: 73px;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 14px 18px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.step-description {
  margin: 0;
  font-weight: 650;
}

.step-progress {
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 0.86rem;
  font-variant-numeric: tabular-nums;
}

.visualizer-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 13px 18px;
}

.transport-controls {
  display: flex;
  gap: 5px;
}

.sort-visualizer .play-button {
  min-width: 105px;
  border-color: var(--accent);
  background: var(--accent);
  color: var(--bg);
}

.sort-visualizer .play-button:hover:not(:disabled) {
  background: color-mix(in srgb, var(--accent) 86%, var(--text));
  color: var(--bg);
}

.speed-control {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 0.86rem;
  font-weight: 700;
}

.speed-control input {
  width: 100px;
  accent-color: var(--accent);
}

.speed-control output {
  min-width: 32px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 0;
  border-top: 1px solid var(--line);
}

.metric-grid div {
  padding: 10px 14px;
  border-right: 1px solid var(--line);
  text-align: center;
}

.metric-grid div:last-child {
  border-right: 0;
}

.metric-grid dt {
  color: var(--muted);
  font-size: 0.76rem;
}

.metric-grid dd {
  margin: 1px 0 0;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 9px 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.76rem;
}

.chart-legend span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.legend-swatch {
  width: 12px;
  height: 12px;
  border: 1px solid var(--line);
  border-radius: 3px;
}

.legend-swatch--active { background: color-mix(in srgb, var(--accent) 34%, var(--panel)); }
.legend-swatch--compare { background: color-mix(in srgb, #d45b54 62%, var(--panel)); }
.legend-swatch--special { background: color-mix(in srgb, #e2a13f 60%, var(--panel)); }
.legend-swatch--sorted { background: color-mix(in srgb, #278651 42%, var(--panel)); }

.pseudocode-card {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--code);
}

.pseudocode-card ol {
  margin: 0;
  padding: 12px 0 12px 50px;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.9rem;
}

.pseudocode-section + .pseudocode-section {
  border-top: 1px solid var(--line);
}

.pseudocode-section h4 {
  margin: 0;
  padding: 10px 18px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 1rem;
}

.pseudocode-card li {
  min-width: max-content;
  padding: 3px 18px 3px 8px;
  border-left: 3px solid transparent;
  color: var(--muted);
}

.pseudocode-card li.is-current {
  border-left-color: var(--accent);
  background: var(--accent-soft);
  color: var(--text);
}

.pseudocode-card code {
  padding: 0;
  background: transparent;
  white-space: pre;
}

.complexity-study {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}

.complexity-study article {
  padding: 17px 18px;
  background: var(--panel);
}

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

.complexity-study strong {
  display: block;
  margin: 2px 0 7px;
  color: var(--accent);
  font-size: 1.15rem;
}

.complexity-study p {
  margin: 0;
}

.property-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.property-cards article {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.property-cards p {
  margin: 10px 0 0;
  color: var(--muted);
}

.algorithm-pagination {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 48px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.algorithm-pagination a {
  display: flex;
  flex-direction: column;
  padding: 13px 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-decoration: none;
}

.algorithm-pagination a:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.algorithm-pagination span {
  color: var(--muted);
  font-size: 0.82rem;
}

.algorithm-pagination__next {
  text-align: right;
}

@media (max-width: 760px) {
  .visualizer-inputs {
    grid-template-columns: 1fr;
  }

  .visualizer-presets {
    justify-content: flex-start;
  }

  .array-chart {
    min-height: 260px;
  }

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

  .transport-controls {
    width: 100%;
  }

  .transport-controls button {
    flex: 1;
  }

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

  .metric-grid div:nth-child(2) {
    border-right: 0;
  }

  .metric-grid div:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .complexity-study,
  .property-cards {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .definition-list div {
    grid-template-columns: 1fr;
    gap: 3px;
  }

  .visualizer-stage,
  .visualizer-inputs,
  .visualizer-status,
  .visualizer-controls {
    padding-right: 12px;
    padding-left: 12px;
  }

  .input-field__row {
    align-items: stretch;
    flex-direction: column;
  }

  .array-chart {
    gap: 2px;
    min-height: 225px;
  }

  .array-bar__index {
    display: none;
  }

  .array-bar__value {
    font-size: 0.67rem;
  }

  .visualizer-status {
    min-height: 95px;
    flex-direction: column;
    gap: 5px;
  }

  .merge-tree-panel__header {
    align-items: flex-start;
    flex-direction: column;
    gap: 3px;
  }

  .transport-controls .play-button span {
    display: none;
  }

  .sort-visualizer .play-button {
    min-width: 44px;
  }

  .algorithm-pagination {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .array-bar__column,
  .merge-tree-edge,
  .merge-tree-node,
  .merge-tree-node rect {
    transition: none;
  }
}

@media print {
  .visualizer-inputs,
  .visualizer-controls {
    display: none;
  }

  .array-chart {
    min-height: 220px;
  }
}