:root {
  --font-main: 'Outfit', sans-serif;
  --font-title: 'Fredoka', sans-serif;

  --bg: #eef4f8;
  --bg-accent-a: #d9ecf7;
  --bg-accent-b: #fff0d4;
  --panel: #ffffff;
  --panel-alt: #f7fbfe;
  --text: #1f2b35;
  --muted: #4d6270;
  --accent: #1f6d8c;
  --accent-soft: #d6ecf6;
  --ok: #2e9a82;
  --warn: #d08a2f;
  --danger: #c84646;
  --graph-men: #2a7ba5;
  --graph-women: #b46b95;
  --graph-edge: #a7b5bf;
  --graph-engaged: #d5aa2c;
  --graph-active: #d05f2a;

  --shadow-soft: 0 12px 26px rgba(11, 27, 36, 0.12);
  --shadow-hard: 0 16px 34px rgba(8, 22, 30, 0.2);

  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 9px;
  --header-h: 112px;

  --splitter-size: 10px;
  --controls-width: 340px;
  --controls-min: 280px;
  --controls-max: 520px;
  --code-width: 430px;
  --code-min: 320px;
  --code-max: 680px;
}

body.theme-dark {
  --bg: #101820;
  --bg-accent-a: #152733;
  --bg-accent-b: #2a2233;
  --panel: #17232d;
  --panel-alt: #1d2b36;
  --text: #dce8f1;
  --muted: #9fb5c4;
  --accent: #64b6d6;
  --accent-soft: #254557;
  --ok: #58c4aa;
  --warn: #e6ac4b;
  --danger: #e16a6a;
  --graph-men: #6ab9e2;
  --graph-women: #e0a4cd;
  --graph-edge: #4f6675;
  --graph-engaged: #f1c84d;
  --graph-active: #f28f5f;

  --shadow-soft: 0 14px 30px rgba(0, 0, 0, 0.34);
  --shadow-hard: 0 18px 36px rgba(0, 0, 0, 0.42);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  min-height: 100%;
}

body {
  font-family: var(--font-main);
  color: var(--text);
  background:
    radial-gradient(circle at 14% 18%, var(--bg-accent-a), transparent 54%),
    radial-gradient(circle at 90% 86%, var(--bg-accent-b), transparent 52%),
    var(--bg);
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

body.modal-open {
  overflow: hidden;
}

body.resizing {
  cursor: col-resize;
  user-select: none;
}

header {
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.4rem;
  background: color-mix(in srgb, var(--panel) 94%, transparent);
  backdrop-filter: blur(4px);
  box-shadow: 0 2px 14px rgba(0, 0, 0, 0.08);
  z-index: 10;
}

.header-title-wrap h1 {
  font-family: var(--font-title);
  color: var(--accent);
  font-size: clamp(1.35rem, 2.3vw, 2rem);
  line-height: 1.1;
}

.header-title-wrap p {
  margin-top: 0.3rem;
  color: var(--muted);
  font-size: 0.96rem;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.icon-btn {
  border: none;
  border-radius: 999px;
  min-width: 40px;
  min-height: 40px;
  padding: 0.35rem 0.65rem;
  background: color-mix(in srgb, var(--accent) 16%, var(--panel));
  color: var(--text);
  font-family: var(--font-title);
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.14s ease, filter 0.14s ease;
}

.icon-btn:hover {
  transform: translateY(-1px);
  filter: brightness(1.04);
}

.panel-toggle-btn {
  align-self: flex-end;
  min-height: 32px;
  min-width: 32px;
  padding: 0.2rem 0.5rem;
  border-radius: 10px;
}

.floating-toggle {
  position: fixed;
  top: calc(var(--header-h) + 0.8rem);
  z-index: 30;
  box-shadow: var(--shadow-soft);
}

.floating-controls {
  left: 0.9rem;
}

.floating-code {
  right: 0.9rem;
}

#mainLayout {
  width: min(1800px, 100%);
  margin: 0 auto;
  padding: 1rem;
  display: grid;
  grid-template-columns: minmax(var(--controls-min), var(--controls-width)) var(--splitter-size) minmax(0, 1fr);
  gap: 0.65rem;
  align-items: start;
  flex: 1;
}

body.controls-collapsed #mainLayout {
  grid-template-columns: minmax(0, 1fr);
}

body.controls-collapsed #controlPanel,
body.controls-collapsed #mainSplitter {
  display: none;
}

.panel {
  background: color-mix(in srgb, var(--panel) 94%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 18%, transparent);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.splitter {
  align-self: stretch;
  border-radius: 8px;
  background: color-mix(in srgb, var(--accent) 16%, var(--panel));
  border: 1px solid color-mix(in srgb, var(--accent) 24%, transparent);
  touch-action: none;
  z-index: 3;
}

.main-splitter,
.sim-splitter {
  width: var(--splitter-size);
  cursor: col-resize;
}

.main-splitter:hover,
.sim-splitter:hover,
.main-splitter.active,
.sim-splitter.active {
  background: color-mix(in srgb, var(--accent) 34%, var(--panel));
}

.control-panel {
  position: sticky;
  top: 0.8rem;
  padding: 1rem;
  max-height: calc(100vh - 1.6rem);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.86rem;
}

.control-panel h2 {
  font-family: var(--font-title);
  color: var(--accent);
  font-size: 1.25rem;
}

.field-grid {
  display: grid;
  gap: 0.42rem;
}

.field-grid.two {
  grid-template-columns: minmax(0, 1fr);
}

.field-grid.curve-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: stretch;
}

.curve-field {
  display: grid;
  gap: 0.32rem;
  align-content: start;
}

.field-grid label {
  font-size: 0.77rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 700;
}

.field-note {
  margin-top: -0.1rem;
  margin-bottom: 0.15rem;
  font-size: 0.81rem;
  color: var(--muted);
  line-height: 1.32;
  background: color-mix(in srgb, var(--accent) 10%, var(--panel));
  border: 1px solid color-mix(in srgb, var(--accent) 20%, transparent);
  border-radius: 8px;
  padding: 0.35rem 0.5rem;
}

.field-slot.hidden {
  display: none;
}

.hidden {
  display: none !important;
}

.range-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.45rem;
  margin-top: 0.3rem;
}

label.range-item {
  display: grid;
  gap: 0.2rem;
  text-transform: none;
  letter-spacing: 0;
  font-size: 0.74rem;
  color: var(--muted);
}

.range-mini-label {
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

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

select,
input,
textarea {
  border-radius: var(--radius-sm);
  border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent);
  background: color-mix(in srgb, var(--panel-alt) 92%, transparent);
  color: var(--text);
  padding: 0.5rem 0.56rem;
  font-size: 0.92rem;
}

textarea {
  resize: vertical;
}

button {
  border: none;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: #fff;
  padding: 0.55rem 0.72rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.12s ease, filter 0.12s ease;
}

button:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
}

button:disabled {
  opacity: 0.58;
  cursor: not-allowed;
  transform: none;
}

button.secondary {
  background: color-mix(in srgb, var(--muted) 45%, var(--panel-alt));
  color: var(--text);
}

.row-btns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}

.run-row {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

#advancedDetails {
  border-radius: var(--radius-md);
  border: 1px solid color-mix(in srgb, var(--accent) 34%, transparent);
  padding: 0.5rem 0.55rem;
  background: color-mix(in srgb, var(--panel-alt) 80%, transparent);
}

#advancedDetails summary {
  list-style: none;
  font-family: var(--font-title);
  font-weight: 600;
  color: var(--accent);
  cursor: pointer;
  margin-bottom: 0.5rem;
}

#advancedDetails[open] summary {
  margin-bottom: 0.65rem;
}

.import-box {
  display: grid;
  gap: 0.3rem;
}

.inline-import {
  margin-bottom: 0.25rem;
}

.import-box label {
  font-size: 0.77rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  font-weight: 700;
}

.counters-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}

.counter-item {
  background: color-mix(in srgb, var(--accent) 12%, var(--panel));
  border-radius: var(--radius-sm);
  border: 1px solid color-mix(in srgb, var(--accent) 26%, transparent);
  padding: 0.45rem 0.5rem;
  display: grid;
  gap: 0.2rem;
}

.counter-item span {
  font-size: 0.73rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  font-weight: 700;
}

.counter-item strong {
  font-family: var(--font-title);
  font-size: 1.05rem;
  color: var(--text);
}

.status-note {
  background: color-mix(in srgb, var(--accent) 12%, var(--panel));
  border-radius: var(--radius-sm);
  border: 1px solid color-mix(in srgb, var(--accent) 28%, transparent);
  color: var(--text);
  min-height: 40px;
  padding: 0.5rem 0.6rem;
  display: flex;
  align-items: center;
  line-height: 1.3;
  font-size: 0.88rem;
}

.workspace {
  padding: 0.88rem;
  min-height: calc(100vh - var(--header-h) - 2rem);
  display: flex;
  flex-direction: column;
}

.tabs {
  display: inline-flex;
  gap: 0.48rem;
  margin-bottom: 0.78rem;
  flex-wrap: wrap;
}

.tab-btn {
  border-radius: 999px;
  padding: 0.45rem 0.88rem;
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  background: color-mix(in srgb, var(--accent) 9%, var(--panel));
  color: var(--text);
}

.tab-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: transparent;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

#simGrid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--splitter-size) minmax(var(--code-min), var(--code-width));
  gap: 0.7rem;
  align-items: stretch;
}

body.code-collapsed #simGrid {
  grid-template-columns: minmax(0, 1fr);
}

body.code-collapsed #simSplitter,
body.code-collapsed #codeColumn {
  display: none;
}

.visual-column {
  display: grid;
  gap: 0.75rem;
}

.pref-pair-wrap {
  display: grid;
  gap: 0.42rem;
}

.pref-pair-toolbar {
  display: flex;
  justify-content: flex-end;
}

.pref-layout-btn {
  border-radius: 999px;
  padding: 0.24rem 0.56rem;
  font-size: 0.73rem;
  line-height: 1.2;
  font-weight: 700;
}

.pref-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
}

.pref-pair.stacked {
  grid-template-columns: minmax(0, 1fr);
}

.pref-pair.roommates-single {
  grid-template-columns: minmax(0, 1fr);
}

.pref-box,
.graph-box,
.step-log-box,
.phase2-trace-box,
.code-column,
.editor-box,
.curve-chart-box,
.curve-table-box,
.insights-box,
.curve-controls {
  background: color-mix(in srgb, var(--panel-alt) 75%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 24%, transparent);
  border-radius: var(--radius-md);
  padding: 0.62rem;
}

.pref-box h3,
.graph-box h3,
.step-log-box h3,
.phase2-trace-box h3,
.code-column h3,
.editor-box h3,
.curve-controls h3,
.curve-chart-box h3,
.curve-table-box h3,
.insights-box h3 {
  font-family: var(--font-title);
  color: var(--accent);
  font-size: 1rem;
  margin-bottom: 0.45rem;
}

.pref-table-wrap {
  max-height: 320px;
  overflow: auto;
  border-radius: var(--radius-sm);
  border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
  background: color-mix(in srgb, var(--panel) 90%, transparent);
}

.pref-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.78rem;
}

.pref-table th,
.pref-table td {
  border: 1px solid color-mix(in srgb, var(--accent) 16%, transparent);
  padding: 0.36rem;
  vertical-align: top;
}

.pref-table thead th {
  position: sticky;
  top: 0;
  background: color-mix(in srgb, #50565e 85%, var(--panel));
  color: #f5f7fa;
  z-index: 2;
}

.pref-table .name-cell {
  min-width: 110px;
  background: color-mix(in srgb, #5b636d 70%, var(--panel));
  color: #f4f7fa;
  font-weight: 700;
  white-space: nowrap;
}

.pref-table .name-cell.cat-good {
  background: color-mix(in srgb, #43b581 56%, var(--panel));
  color: color-mix(in srgb, #143326 84%, #0b111a);
}

.pref-table .name-cell.cat-bad {
  background: color-mix(in srgb, #8f6fd1 58%, var(--panel));
  color: color-mix(in srgb, #241835 86%, #0b111a);
}

.pref-table .name-cell.cat-good.engaged {
  background: color-mix(in srgb, #7dd7a9 48%, var(--panel));
}

.pref-table .name-cell.cat-bad.engaged {
  background: color-mix(in srgb, #b69ae7 50%, var(--panel));
}

.name-marker {
  display: inline-block;
  margin-left: 0.3rem;
  font-weight: 800;
  font-size: 1.2rem;
  line-height: 1;
  min-width: 1ch;
  text-align: center;
}

.name-marker.engaged {
  color: var(--graph-engaged);
}

.name-marker.single {
  color: var(--danger);
}

.name-marker.open {
  color: color-mix(in srgb, var(--muted) 78%, #505861);
}

.name-slot-markers {
  display: inline-flex;
  align-items: center;
  gap: 0.08rem;
  margin-left: 0.3rem;
  vertical-align: middle;
}

.name-slot-markers .name-marker {
  margin-left: 0;
  font-size: 1.04rem;
  min-width: 0.72ch;
}

.graph-status-marker {
  font-family: var(--font-title);
  font-size: 20px;
  font-weight: 800;
}

.graph-status-engaged {
  fill: var(--graph-engaged);
}

.graph-status-single {
  fill: var(--danger);
}

.graph-status-open {
  fill: color-mix(in srgb, var(--muted) 82%, #505861);
}

.pref-table .partner-cell {
  min-width: 82px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.pref-table tr.active-row {
  background: color-mix(in srgb, var(--graph-active) 18%, var(--panel));
}

.pref-table tr.instability-row {
  background: color-mix(in srgb, #f2a84f 12%, var(--panel));
}

.pref-table .name-cell.instability-actor {
  box-shadow: inset 0 0 0 2px color-mix(in srgb, #f2a84f 62%, transparent);
}

.pref-table td.pref-cell {
  min-width: 74px;
  text-align: center;
  white-space: nowrap;
  font-weight: 600;
  background: color-mix(in srgb, var(--panel) 92%, #fff);
}

.pref-table td.pref-cell.forbidden {
  color: color-mix(in srgb, var(--danger) 92%, #6f0d0d) !important;
  font-weight: 800;
  text-decoration-line: line-through;
  text-decoration-color: color-mix(in srgb, var(--danger) 94%, #a10f0f) !important;
  text-decoration-thickness: 2px;
  text-decoration-skip-ink: none;
  background:
    repeating-linear-gradient(
      135deg,
      color-mix(in srgb, var(--danger) 20%, transparent) 0 5px,
      color-mix(in srgb, var(--danger) 4%, transparent) 5px 10px
    ),
    color-mix(in srgb, var(--danger) 16%, var(--panel));
  box-shadow: inset 0 0 0 2px color-mix(in srgb, var(--danger) 70%, transparent);
}

.pref-table td.pref-cell.engaged {
  background: color-mix(in srgb, #ea67c6 32%, var(--panel));
  color: color-mix(in srgb, var(--text) 85%, #111);
}

.pref-table td.pref-cell.engaged.engaged-good {
  background: color-mix(in srgb, #76d6a6 34%, var(--panel));
  color: color-mix(in srgb, var(--text) 88%, #111);
}

.pref-table td.pref-cell.engaged.engaged-bad {
  background: color-mix(in srgb, #b39be6 34%, var(--panel));
  color: color-mix(in srgb, var(--text) 88%, #111);
}

.pref-table td.pref-cell.proposed {
  background: color-mix(in srgb, var(--graph-active) 20%, var(--panel));
  box-shadow: inset 0 0 0 2px color-mix(in srgb, var(--graph-active) 62%, transparent);
}

.pref-table td.pref-cell.muted {
  color: color-mix(in srgb, var(--muted) 55%, transparent);
}

.pref-table td.pref-cell.deleted {
  color: color-mix(in srgb, var(--danger) 78%, var(--muted));
  text-decoration: line-through;
  text-decoration-thickness: 2px;
  text-decoration-color: color-mix(in srgb, var(--danger) 72%, transparent);
}

.pref-table.roommates-pref-table td.pref-cell.deleted {
  position: relative;
  color: color-mix(in srgb, var(--danger) 92%, #6f0d0d);
  font-weight: 800;
  text-decoration-color: color-mix(in srgb, var(--danger) 94%, #a10f0f);
  background:
    repeating-linear-gradient(
      135deg,
      color-mix(in srgb, var(--danger) 20%, transparent) 0 5px,
      color-mix(in srgb, var(--danger) 4%, transparent) 5px 10px
    ),
    color-mix(in srgb, var(--danger) 16%, var(--panel));
  box-shadow: inset 0 0 0 2px color-mix(in srgb, var(--danger) 70%, transparent);
}

.pref-table td.pref-cell.engaged.proposed {
  box-shadow: inset 0 0 0 2px color-mix(in srgb, var(--graph-active) 62%, transparent);
}

.pref-table td.pref-cell.instability-current {
  background: color-mix(in srgb, #4f83d1 25%, var(--panel));
  box-shadow: inset 0 0 0 2px color-mix(in srgb, #4f83d1 56%, transparent);
}

.pref-table td.pref-cell.instability-blocking {
  background: color-mix(in srgb, var(--danger) 18%, var(--panel));
  box-shadow: inset 0 0 0 2px color-mix(in srgb, var(--danger) 58%, transparent);
  border-style: dashed;
  border-color: color-mix(in srgb, var(--danger) 64%, transparent);
}

.phase2-trace-content {
  display: grid;
  gap: 0.55rem;
}

.phase2-trace-subtitle {
  margin: 0 0 0.3rem;
  font-size: 0.82rem;
  color: var(--muted);
  font-weight: 700;
}

.phase2-cycle-wrap,
.phase2-elim-wrap {
  border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  overflow: auto;
  max-width: 100%;
  max-height: 240px;
}

.phase2-cycle-table,
.phase2-elim-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.78rem;
}

.phase2-cycle-table th,
.phase2-cycle-table td,
.phase2-elim-table th,
.phase2-elim-table td {
  border: 1px solid color-mix(in srgb, var(--accent) 16%, transparent);
  padding: 0.3rem 0.38rem;
  text-align: center;
  white-space: nowrap;
}

.phase2-cycle-table th {
  background: color-mix(in srgb, #5b636d 68%, var(--panel));
  color: #f4f7fa;
  font-weight: 700;
}

.phase2-cycle-table td {
  background: color-mix(in srgb, var(--panel) 92%, #fff);
  font-weight: 700;
}

.phase2-cycle-table td.phase2-close-cell {
  background: color-mix(in srgb, var(--graph-active) 18%, var(--panel));
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--graph-active) 48%, transparent);
}

.phase2-elim-table th {
  background: color-mix(in srgb, #50565e 85%, var(--panel));
  color: #f5f7fa;
  font-weight: 700;
}

.phase2-elim-table td {
  background: color-mix(in srgb, var(--panel) 92%, #fff);
}

.phase2-elim-table td.phase2-pair-cell {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.phase2-status {
  font-weight: 700;
}

.phase2-status-done {
  color: color-mix(in srgb, var(--graph-engaged) 84%, #1d6b49);
}

.phase2-status-current {
  color: color-mix(in srgb, var(--graph-active) 86%, #0f5075);
}

.phase2-status-pending {
  color: color-mix(in srgb, var(--muted) 82%, #5f6770);
}

.phase2-elim-table tr.phase2-row-active td {
  background: color-mix(in srgb, var(--graph-active) 16%, var(--panel));
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--graph-active) 38%, transparent);
}

.graph-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
}

.instability-note {
  margin: 0.4rem 0 0.5rem;
  border-radius: var(--radius-sm);
  border: 1px solid color-mix(in srgb, var(--accent) 26%, transparent);
  background: color-mix(in srgb, var(--accent) 10%, var(--panel));
  padding: 0.45rem 0.55rem;
  font-size: 0.79rem;
  line-height: 1.35;
  color: var(--text);
}

.instability-note.warn {
  border-color: color-mix(in srgb, var(--danger) 42%, transparent);
  background: color-mix(in srgb, var(--danger) 12%, var(--panel));
}

.chip {
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 15%, var(--panel));
  border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.16rem 0.5rem;
}

.graph-area {
  width: 100%;
  height: min(640px, 58vh);
  border-radius: var(--radius-sm);
  border: 1px solid color-mix(in srgb, var(--accent) 28%, transparent);
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  overflow: hidden;
}

#matchGraph {
  width: 100%;
  height: 100%;
  display: block;
}

.graph-forbidden-edge {
  stroke: color-mix(in srgb, var(--danger) 72%, #7f1d1d);
  stroke-width: 1.6;
  stroke-opacity: 0.78;
  stroke-dasharray: 6 4;
  stroke-linecap: round;
}

.graph-room-edge {
  stroke: var(--graph-edge);
  stroke-opacity: 0.3;
}

.graph-room-deleted {
  stroke: color-mix(in srgb, var(--danger) 58%, var(--graph-edge));
  stroke-opacity: 0.56;
  stroke-dasharray: 6 5;
  stroke-linecap: round;
}

.graph-room-engaged {
  stroke: var(--graph-engaged);
  stroke-width: 3;
  stroke-opacity: 0.92;
}

.graph-room-active {
  stroke: var(--graph-active);
  stroke-width: 3.4;
  stroke-opacity: 0.95;
}

.graph-instability-current {
  stroke: color-mix(in srgb, #4f83d1 88%, #1f4b78);
  stroke-width: 4.6;
  stroke-opacity: 0.9;
}

.graph-instability-blocking {
  stroke: color-mix(in srgb, var(--danger) 90%, #7f1d1d);
  stroke-width: 3.2;
  stroke-opacity: 0.96;
  stroke-dasharray: 8 6;
  stroke-linecap: round;
}

.code-column {
  display: grid;
  grid-template-rows: auto auto minmax(220px, 360px) auto minmax(0, 1fr);
  gap: 0.45rem;
  align-content: stretch;
  min-height: 0;
}

.code-display {
  border-radius: var(--radius-sm);
  background: #162430;
  color: #dbebf2;
  border: 1px solid rgba(0, 0, 0, 0.25);
  padding: 0.55rem;
  min-height: 240px;
  max-height: 360px;
  overflow: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.8rem;
}

body.theme-dark .code-display {
  background: #111821;
}

.code-line {
  border-radius: 5px;
  padding: 0.12rem 0.25rem;
  white-space: pre;
}

.code-line.active {
  background: rgba(246, 165, 73, 0.28);
  box-shadow: inset 0 0 0 1px rgba(246, 165, 73, 0.6);
  font-weight: 700;
}

.ds-display {
  border-radius: var(--radius-sm);
  border: 1px solid color-mix(in srgb, var(--accent) 23%, transparent);
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  min-height: 230px;
  height: 100%;
  max-height: calc(100vh - var(--header-h) - 1.2rem);
  overflow-y: auto;
  overflow-x: hidden;
  padding: 0.42rem;
}

.ds-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.34rem;
  align-items: start;
}

.ds-card {
  background: color-mix(in srgb, var(--accent) 9%, var(--panel));
  border: 1px solid color-mix(in srgb, var(--accent) 18%, transparent);
  border-radius: 8px;
  padding: 0.28rem 0.32rem;
  display: grid;
  gap: 0.2rem;
}

.ds-card-wide {
  grid-column: 1 / -1;
}

.ds-card h4 {
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0;
  font-weight: 700;
}

.ds-mini-table {
  width: 100%;
  border-collapse: collapse;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.7rem;
}

.ds-mini-table th,
.ds-mini-table td {
  border: 1px solid color-mix(in srgb, var(--accent) 18%, transparent);
  padding: 0.15rem 0.2rem;
  text-align: left;
  vertical-align: top;
}

.ds-mini-table thead th {
  background: color-mix(in srgb, var(--accent) 12%, var(--panel));
}

.ds-prefs-cell {
  white-space: normal;
  word-break: break-word;
}

.ds-badges {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  align-content: flex-start;
  gap: 0.18rem;
}

.ds-badge {
  border-radius: 6px;
  border: 1px solid color-mix(in srgb, var(--accent) 28%, transparent);
  background: color-mix(in srgb, var(--panel) 88%, transparent);
  padding: 0.12rem 0.34rem;
  display: inline-block;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.69rem;
  line-height: 1.2;
}

.ds-badge.warn {
  border-color: color-mix(in srgb, var(--danger) 45%, transparent);
  background: color-mix(in srgb, var(--danger) 15%, var(--panel));
}

.ds-empty {
  color: var(--muted);
  font-size: 0.72rem;
}

.ds-queue-track {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(82px, 1fr));
  gap: 0.2rem;
}

.ds-queue-cell {
  border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
  border-radius: 6px;
  background: color-mix(in srgb, var(--panel) 90%, transparent);
  padding: 0.16rem 0.22rem;
  display: grid;
  gap: 0.06rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.68rem;
  line-height: 1.15;
}

.ds-queue-cell small {
  color: var(--muted);
  font-size: 0.58rem;
  line-height: 1;
}

.step-log {
  border-radius: var(--radius-sm);
  border: 1px solid color-mix(in srgb, var(--accent) 23%, transparent);
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  padding: 0.18rem;
  height: 34px;
  max-height: 34px;
  overflow: auto;
  display: grid;
  gap: 0.24rem;
  font-size: 0.8rem;
}

.step-item {
  border-radius: 6px;
  padding: 0.26rem 0.34rem;
  background: color-mix(in srgb, var(--accent) 8%, var(--panel));
  border: 1px solid color-mix(in srgb, var(--accent) 17%, transparent);
}

.step-item.current {
  background: color-mix(in srgb, var(--graph-active) 14%, var(--panel));
  border-color: color-mix(in srgb, var(--graph-active) 38%, transparent);
}

.editor-grid {
  margin-top: 0.75rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
}

.editor-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.45rem;
}

.editor-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.76rem;
}

.editor-table th,
.editor-table td {
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 15%, transparent);
  padding: 0.3rem;
  vertical-align: top;
}

.editor-table input,
.editor-table select {
  width: 100%;
  min-width: 60px;
  font-size: 0.75rem;
  padding: 0.34rem;
}

.editor-table .row-del-btn {
  width: 32px;
  min-width: 32px;
  padding: 0.3rem;
}

.editor-table .category-toggle {
  width: 100%;
  min-width: 72px;
  text-transform: capitalize;
  font-size: 0.73rem;
  padding: 0.3rem 0.5rem;
}

.editor-table .category-toggle[data-category="good"] {
  background: color-mix(in srgb, #60c58f 45%, var(--panel));
  border-color: color-mix(in srgb, #2f9f72 40%, transparent);
}

.editor-table .category-toggle[data-category="bad"] {
  background: color-mix(in srgb, #9f82d8 45%, var(--panel));
  border-color: color-mix(in srgb, #7453b4 40%, transparent);
}

.editor-table.hide-cap-col .editor-cap-col {
  display: none;
}

.editor-table.hide-cat-col .editor-cat-col {
  display: none;
}

.bottom-row {
  margin-top: 0.65rem;
}

.insights-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.42rem;
}

.insight-card {
  border-radius: var(--radius-sm);
  border: 1px solid color-mix(in srgb, var(--accent) 24%, transparent);
  background: color-mix(in srgb, var(--panel) 90%, transparent);
  padding: 0.4rem 0.5rem;
  display: grid;
  gap: 0.2rem;
}

.insight-card .title {
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  font-weight: 700;
}

.insight-card .meta {
  font-size: 0.66rem;
  color: var(--muted);
  line-height: 1.25;
}

.insight-card .value {
  font-family: var(--font-title);
  font-size: 0.94rem;
}

.insight-controls {
  margin-top: 0.12rem;
  display: flex;
  align-items: end;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.insight-limit-control {
  display: grid;
  gap: 0.14rem;
  min-width: 150px;
  flex: 1 1 180px;
}

.insight-limit-control span {
  font-size: 0.64rem;
  color: var(--muted);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-weight: 700;
}

.insight-limit-control input {
  font-size: 0.78rem;
  padding: 0.32rem 0.42rem;
}

.insight-controls button {
  font-size: 0.74rem;
  padding: 0.38rem 0.58rem;
  white-space: nowrap;
}

.insight-card.good .value {
  color: var(--ok);
}

.insight-card.bad .value {
  color: var(--danger);
}

.insight-card.neutral .value {
  color: var(--warn);
}

.curve-controls {
  display: grid;
  gap: 0.7rem;
}

.curve-toggle-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.4rem;
}

.toggle-chip {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  background: color-mix(in srgb, var(--accent) 8%, var(--panel));
  border: 1px solid color-mix(in srgb, var(--accent) 20%, transparent);
  border-radius: 999px;
  padding: 0.2rem 0.5rem;
  font-size: 0.78rem;
  color: var(--text);
}

.toggle-chip input {
  accent-color: var(--accent);
}

.curve-chart-box,
.curve-table-box {
  margin-top: 0.7rem;
}

.curve-chart-area {
  position: relative;
  border-radius: var(--radius-sm);
  border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
  background: color-mix(in srgb, var(--panel) 90%, transparent);
  overflow: hidden;
}

#curveChartSvg {
  width: 100%;
  min-height: 360px;
  display: block;
}

.curve-tooltip {
  position: absolute;
  z-index: 5;
  pointer-events: none;
  transform: translate(-50%, -110%);
  background: color-mix(in srgb, var(--panel) 92%, #111);
  border: 1px solid color-mix(in srgb, var(--accent) 28%, transparent);
  border-radius: 8px;
  padding: 0.32rem 0.45rem;
  font-size: 0.74rem;
  line-height: 1.35;
  box-shadow: var(--shadow-soft);
}

.curve-grid-line {
  stroke: color-mix(in srgb, var(--accent) 14%, transparent);
  stroke-width: 1;
}

.curve-axis {
  stroke: color-mix(in srgb, var(--accent) 60%, transparent);
  stroke-width: 1.2;
}

.curve-label {
  fill: color-mix(in srgb, var(--muted) 88%, var(--text));
  font-size: 11px;
  font-family: var(--font-main);
}

.curve-legend {
  fill: var(--text);
  font-size: 11px;
  font-family: var(--font-main);
}

.curve-point {
  cursor: pointer;
}

.curve-table-wrap {
  overflow: auto;
  border-radius: var(--radius-sm);
  border: 1px solid color-mix(in srgb, var(--accent) 24%, transparent);
}

.curve-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}

.curve-table th,
.curve-table td {
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 15%, transparent);
  padding: 0.35rem;
  text-align: right;
}

.curve-table th:first-child,
.curve-table td:first-child {
  text-align: left;
}

.curve-table tbody tr:hover {
  background: color-mix(in srgb, var(--accent) 10%, var(--panel));
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(9, 18, 27, 0.62);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.9rem;
  z-index: 1000;
}

.modal-overlay[hidden] {
  display: none !important;
}

.modal-card {
  width: min(720px, 100%);
  max-height: min(86vh, 720px);
  overflow: auto;
  padding: 0.85rem;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.55rem;
}

.modal-header h2 {
  font-family: var(--font-title);
  color: var(--accent);
  font-size: 1.2rem;
}

.modal-content {
  display: grid;
  gap: 0.48rem;
  line-height: 1.42;
}

.modal-content ul,
.modal-content ol {
  padding-left: 1.15rem;
  display: grid;
  gap: 0.35rem;
}

.modal-content a {
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

.modal-content a:hover {
  text-decoration: underline;
}

footer {
  margin-top: auto;
  text-align: center;
  font-size: 0.82rem;
  color: var(--muted);
  padding: 0.75rem 1rem 1rem;
  line-height: 1.5;
}

footer a {
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

.graph-node-label {
  font-size: 11px;
  font-family: var(--font-main);
  fill: var(--text);
}

.graph-rank-label {
  font-size: 10px;
  font-family: var(--font-title);
  fill: var(--muted);
}

.graph-side-title {
  font-size: 13px;
  font-family: var(--font-title);
  fill: var(--muted);
}

@media (max-width: 1420px) {
  #mainLayout {
    grid-template-columns: minmax(250px, 310px) var(--splitter-size) minmax(0, 1fr);
  }

  #simGrid {
    grid-template-columns: minmax(0, 1fr);
  }

  #simSplitter,
  #codeColumn {
    display: none;
  }
}

@media (max-width: 1200px) {
  #mainLayout {
    grid-template-columns: minmax(0, 1fr);
  }

  #mainSplitter,
  #controlPanel {
    position: static;
    max-height: none;
  }

  #mainSplitter {
    display: none;
  }

  .editor-grid,
  .pref-pair,
  .insights-grid,
  .curve-toggle-grid {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

@media (max-width: 700px) {
  header {
    padding: 0.8rem;
  }

  .header-title-wrap p {
    font-size: 0.85rem;
  }

  .row-btns,
  .field-grid.curve-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .run-row {
    grid-template-columns: minmax(0, 1fr);
  }

  .workspace {
    padding: 0.6rem;
  }

  .control-panel {
    padding: 0.8rem;
  }

  #curveChartSvg {
    min-height: 300px;
  }
}