/* ========= Reset & base ========= */

*, *::before, *::after { box-sizing: border-box; }

/* Design tokens come from /css/tokens.css — linked in index.html. */

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
}

h1 { font-size: 2.4rem; margin: 0 0 0.3rem 0; }
h2 { font-size: 1.6rem; margin: 0 0 0.8rem 0; }
h3 { font-size: 1.05rem; margin: 0 0 0.6rem 0; font-family: var(--font-sans); font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; font-size: 0.8rem; color: var(--ink-soft); }

p { margin: 0 0 1rem 0; }

a { color: var(--accent); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 2px; }

em { font-style: italic; }
strong { font-weight: 600; }

/* ========= Layout ========= */

/* Header spans the same content width as the rest of the page so its
   bottom rule aligns with the section dividers below. The title and
   subtitle text inside is constrained to a comfortable reading width,
   left-aligned within the header. */
.page-header {
  max-width: 1220px;
  margin: 0 auto;
  padding: 3.5rem 1.5rem 1.8rem 1.5rem;
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
  transition: border-color 0.3s ease;
}
.page-header-brand { flex: 1; min-width: 0; }
.page-header h1 {
  max-width: 820px;
}
.page-header .subtitle {
  font-size: 1.1rem;
  color: var(--ink-soft);
  margin: 0.4rem 0 0 0;
  max-width: 720px;
  line-height: 1.5;
}
.page-header-nav {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  flex-shrink: 0;
  margin-top: 0.6rem;
  font-family: var(--font-sans);
  font-size: 0.88rem;
}
.page-header-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  transition: color 0.2s ease;
}
.page-header-nav a:hover { color: var(--accent); }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: transparent;
  border: 1px solid var(--rule);
  color: var(--ink-soft);
  cursor: pointer;
  padding: 0;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.theme-toggle:hover {
  background: var(--paper);
  color: var(--accent);
  border-color: var(--accent);
}
.theme-toggle svg { display: block; }

/* Smooth the theme swap across the page surfaces. */
body {
  transition: background 0.3s ease, color 0.3s ease;
}

/* KaTeX: inherit theme color rather than stay black in dark mode. */
.katex { color: var(--ink); }

@media (max-width: 640px) {
  .page-header {
    flex-direction: column;
    gap: 0.6rem;
  }
  .page-header-nav { margin-top: 0.2rem; }
}

main {
  max-width: 1220px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem 1.5rem;
}

section {
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--rule);
}
section:last-of-type { border-bottom: none; }

section.narrative {
  max-width: 1280px;
  margin: 0 auto;
}

section.sim-block {
  max-width: 1280px;
  margin: 0 auto;
}

footer {
  max-width: 1220px;
  margin: 0 auto;
  padding: 2rem 0;
  color: var(--ink-faint);
  font-size: 0.88rem;
  line-height: 1.55;
}
footer p { max-width: 820px; margin: 0; }
footer h3 { margin-bottom: 0.7rem; }

/* Numbered references in footer */
.refs-list {
  max-width: 820px;
  margin: 0 0 1.2rem 0;
  padding-left: 1.6rem;
  font-size: 0.88rem;
  line-height: 1.55;
}
.refs-list li { margin: 0 0 0.45rem 0; }
.refs-list li em { color: var(--ink); font-style: italic; }
.refs-note { font-size: 0.85rem; color: var(--ink-faint); }

/* Footnote superscript markers inline in prose */
sup a.footnote-ref {
  color: var(--nash);
  text-decoration: none;
  font-size: 0.78em;
  padding: 0 1px;
}
sup a.footnote-ref:hover { text-decoration: underline; }
sup a.footnote-ref:target,
.refs-list li:target {
  background: var(--tint-highlight);
  border-radius: 2px;
}

.equation {
  margin: 1.2rem 0;
  font-size: 1.05rem;
}


.math-details {
  margin: 1.5rem 0 0 0;
  padding: 0.2rem 0;
  border-top: 1px dashed var(--rule);
  padding-top: 1rem;
}
.math-details summary {
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--accent);
  padding: 0.3rem 0;
  user-select: none;
  list-style: none;
}
.math-details summary::marker { content: ""; }
.math-details summary::before {
  content: "▸ ";
  display: inline-block;
  transition: transform 0.2s ease;
}
.math-details[open] summary::before {
  content: "▾ ";
}
.math-details[open] summary {
  margin-bottom: 0.5rem;
}
.math-details p {
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.definition-box {
  margin: 1.2rem 0;
  padding: 0.7rem 1rem 0.7rem 1.1rem;
  background: rgba(29, 78, 137, 0.04);
  border-left: 3px solid var(--accent);
  border-radius: 0 4px 4px 0;
  font-size: 0.95rem;
  color: var(--ink);
  line-height: 1.5;
}
.def-term {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 0.3rem;
}
.def-body {
  display: block;
  font-style: italic;
  color: var(--ink-soft);
}
.def-body em { font-style: normal; font-weight: 600; color: var(--ink); }

.demo-hint {
  margin-top: 0.6rem;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: var(--ink-faint);
  font-style: italic;
}
.demo-hint strong { color: var(--ink-soft); font-style: normal; }

/* ========= Animated demo ========= */

.demo-panel {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 1.3rem;
  margin-top: 1rem;
  box-shadow: var(--shadow-sm);
}

.demo-panel svg {
  background: var(--bg);
  border-radius: 6px;
}

.demo-caption {
  margin-top: 1rem;
  min-height: 3rem;
  padding: 0.7rem 0.9rem;
  background: var(--bg);
  border-left: 3px solid var(--accent);
  border-radius: 0 4px 4px 0;
  font-style: italic;
  font-size: 0.95rem;
  color: var(--ink);
  line-height: 1.5;
  transition: border-left-color 0.3s ease;
}
.demo-caption.finale {
  border-left-color: var(--nash);
  background: var(--tint-nash-bg);
  color: var(--tint-nash-ink);
}

.demo-progress {
  margin-top: 1rem;
  height: 4px;
  background: var(--rule);
  border-radius: 2px;
  overflow: hidden;
}
.demo-progress-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 0.3s ease;
}

.demo-controls {
  margin-top: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.demo-btn {
  padding: 0.5rem 1.1rem;
  border: 1px solid var(--rule);
  border-radius: 5px;
  background: var(--paper);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--ink);
  cursor: pointer;
  transition: all 0.15s ease;
}
.demo-btn:hover {
  background: var(--bg);
  border-color: var(--accent);
}
.demo-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.demo-btn-play {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
  font-weight: 600;
}
.demo-btn-play:hover {
  background: var(--accent-hover);
}
.demo-btn-play:disabled {
  background: var(--ink-faint);
  border-color: var(--ink-faint);
}

.demo-phase {
  margin-left: auto;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: var(--ink-faint);
}

/* Demo SVG element styles */
.demo-firm-rect { fill: var(--paper); stroke: var(--rule); stroke-width: 1; }
.demo-firm-label { font-family: var(--font-sans); font-size: 11px; font-weight: 600; fill: var(--ink); }
.demo-worker { fill: var(--worker); transition: fill 0.6s ease; }
.demo-worker-auto { fill: var(--nash); }
.demo-worker-auto-trap { fill: var(--nash-soft); transition: fill 0.6s ease; }

.demo-legend {
  display: flex;
  gap: 1.6rem;
  flex-wrap: wrap;
  margin: 0 0 0.9rem 0;
  padding: 0 0.15rem;
  font-size: 0.85rem;
  color: var(--ink-soft);
}
.demo-legend-item { display: inline-flex; align-items: center; gap: 0.5rem; }
.demo-legend-dot {
  display: inline-block;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  flex-shrink: 0;
}
.demo-legend-dot-employed { background: var(--worker); }
.demo-legend-dot-auto { background: var(--nash); }
.demo-legend-dot-trap { background: var(--nash-soft); }

/* Coop counterfactual line on the demand chart */
.demo-chart-coop-line {
  stroke: var(--coop);
  stroke-width: 1.5;
  stroke-dasharray: 5 4;
  fill: none;
}
.demo-chart-coop-label {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  fill: var(--coop);
}

/* Share-of-market slider + live $ readouts below the demo */
.demo-share-control {
  max-width: 820px;
  margin: 1.4rem auto 0 auto;
  padding: 1.1rem 1.3rem;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 8px;
}
.demo-share-control .control-title {
  display: block;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--ink);
  margin-bottom: 0.55rem;
  text-transform: none;
  letter-spacing: normal;
}
.demo-share-control .control-row {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 0.9rem;
}
.demo-share-control .control-row input[type="range"] {
  flex: 1;
  max-width: 420px;
}
.demo-share-control .control-row output {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--ink);
  min-width: 3rem;
}
.demo-share-readouts {
  font-size: 0.92rem;
  color: var(--ink-soft);
  line-height: 1.85;
}
.demo-share-readouts strong {
  color: var(--ink);
  font-weight: 600;
  font-family: var(--font-mono);
  font-size: 0.95rem;
}
.demo-share-readouts .readout-coop { color: var(--coop); }
.demo-share-readouts .readout-nash { color: var(--nash); }
.demo-share-readouts .readout-trap { color: var(--wedge); }
.demo-share-note {
  margin: 0.7rem 0 0 0;
  font-size: 0.85rem;
  color: var(--ink-faint);
  font-style: italic;
}
.demo-demand-bg { fill: var(--rule); }
.demo-demand-fill { fill: var(--coop); transition: width 0.8s ease; }
.demo-demand-label { font-family: var(--font-sans); font-size: 11px; fill: var(--ink); }
.demo-axis-label { font-family: var(--font-sans); font-size: 10px; fill: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.04em; }
.demo-highlight-firm { stroke: var(--accent); stroke-width: 2.5; }

.demo-chart-line {
  fill: none;
  stroke: var(--accent);
  stroke-width: 2.2;
}
.demo-chart-dots circle {
  fill: var(--accent);
  stroke: var(--paper);
  stroke-width: 2;
}
.demo-chart-tick {
  font-family: var(--font-sans);
  font-size: 10px;
  fill: var(--ink-faint);
}
.demo-chart-point-label {
  font-family: var(--font-mono);
  font-size: 10px;
  fill: var(--ink);
  font-weight: 600;
}

.chart-caption {
  color: var(--ink-faint);
  font-size: 0.9rem;
  margin-top: 0.5rem;
  text-align: center;
}

/* ========= Simulator ========= */

.sim-intro {
  color: var(--ink-soft);
  margin-bottom: 1.5rem;
}

.sim-grid {
  display: grid;
  grid-template-columns: minmax(300px, 360px) 1fr;
  gap: 1.5rem;
  align-items: stretch;
}

@media (max-width: 820px) {
  .sim-grid { grid-template-columns: 1fr; }
}

.panel {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 1.4rem 1.4rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}
.results-panel { min-height: 100%; }
.outcome-chart-wrap {
  flex: 1;
  display: flex;
  align-items: stretch;
  min-height: 360px;
}
.outcome-chart-wrap svg { width: 100%; height: 100%; }

.controls-panel h3,
.results-panel h3 {
  margin-top: 0;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 1rem;
}

.control-group {
  margin-bottom: 0.4rem;
  padding-top: 0.2rem;
}
.control-group + .control-group {
  border-top: 1px dashed var(--rule);
  padding-top: 1rem;
  margin-top: 1rem;
}
.control-group-header {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.9rem;
}

.control-title {
  font-weight: 600;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 0.88rem;
}
.control-row {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-top: 0.3rem;
}
.control-row input[type=range] {
  flex: 1;
}
.control-row output {
  float: none;
  min-width: 5.4rem;
  text-align: center;
  font-size: 0.78rem;
  padding: 0.18rem 0.4rem;
}

.results-panel .chart-title {
  margin-top: 1.5rem;
  border-top: 1px solid var(--rule);
  padding-top: 1rem;
}

.control {
  margin-bottom: 1.1rem;
}

.control label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  color: var(--ink-soft);
  margin-bottom: 0.3rem;
}

.control label .hint {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--ink-faint);
  font-size: 0.95rem;
}

.control input[type=range] {
  width: 100%;
  accent-color: var(--accent);
}

.control output {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink);
  background: var(--bg);
  padding: 0.05rem 0.4rem;
  border-radius: 3px;
  min-width: 3rem;
  text-align: right;
  float: right;
}

.derived {
  margin-top: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-faint);
}
.derived span {
  color: var(--ink);
}

.control-explain {
  margin: 0.35rem 0 0 0;
  font-family: var(--font-serif);
  font-size: 0.82rem;
  font-style: italic;
  color: var(--ink-soft);
  line-height: 1.45;
}
.control-explain em {
  color: var(--ink);
  font-style: italic;
}

.toggle-control label {
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
  gap: 0.55rem;
  cursor: pointer;
  margin-bottom: 0.4rem;
}
.toggle-control input[type=checkbox] {
  margin-top: 0.25rem;
  accent-color: var(--coop);
  flex-shrink: 0;
  width: 16px;
  height: 16px;
}
.toggle-control label > span {
  font-size: 0.92rem;
  color: var(--ink);
  line-height: 1.3;
}
.tax-readout {
  margin-top: 0.4rem;
  padding-left: 0;
}

.reset-btn {
  display: block;
  margin-top: 1.2rem;
  padding: 0.4rem 0.9rem;
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 4px;
  color: var(--ink-soft);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  cursor: pointer;
  transition: background 0.15s ease;
}
.reset-btn:hover {
  background: var(--bg);
  color: var(--ink);
}

/* Readouts */

.readouts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.8rem;
  margin-bottom: 1rem;
}

.stat {
  padding: 0.7rem 0.8rem;
  background: var(--bg);
  border-radius: 6px;
  border-left: 3px solid var(--rule);
}

.stat-label {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.1rem;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  color: var(--ink);
  line-height: 1.1;
}

.stat-nash { border-left-color: var(--nash); }
.stat-coop { border-left-color: var(--coop); }
.stat-wedge { border-left-color: var(--wedge); }
.stat-wedge .stat-value { color: var(--wedge); font-weight: 600; }

.verdict {
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  border-radius: 6px;
  font-size: 0.95rem;
  line-height: 1.5;
  font-style: italic;
  color: var(--ink-soft);
  background: var(--bg);
  border-left: 3px solid var(--accent);
  transition: border-left-color 0.3s ease, background 0.3s ease;
}
.verdict.trap { border-left-color: var(--nash); background: var(--tint-nash-bg); color: var(--tint-nash-ink); }
.verdict.cooperative { border-left-color: var(--coop); background: var(--tint-coop-bg); color: var(--tint-coop-ink); }
.verdict.safe { border-left-color: var(--ink-faint); background: var(--bg); color: var(--ink-soft); }

/* ========= SVG charts ========= */

svg { width: 100%; height: auto; display: block; }

.axis text { font-family: var(--font-sans); font-size: 11px; fill: var(--ink-soft); }
.axis line, .axis path { stroke: var(--rule); shape-rendering: crispEdges; }
.grid line { stroke: var(--rule); stroke-dasharray: 2 3; }
.grid path { stroke: none; }

.bar-nash { fill: var(--nash); }
.bar-coop { fill: var(--coop); }
.bar-label { font-family: var(--font-sans); font-size: 11px; fill: var(--ink); font-weight: 600; }
.group-label { font-family: var(--font-sans); font-size: 11px; fill: var(--ink-soft); }
.metric-name { font-family: var(--font-sans); font-size: 12px; fill: var(--ink); font-weight: 600; }
.delta-label { font-family: var(--font-sans); font-size: 11px; fill: var(--wedge); font-weight: 600; font-style: italic; }
.delta-zero { fill: var(--ink-faint); font-style: normal; font-weight: 400; }

.chart-legend {
  display: flex;
  gap: 1.2rem;
  padding: 0.4rem 0 0.7rem 0;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: var(--ink-soft);
  flex-wrap: wrap;
}
.chart-legend .swatch {
  display: inline-block;
  width: 12px; height: 12px;
  border-radius: 2px;
  margin-right: 0.35rem;
  vertical-align: middle;
}
.swatch-nash { background: var(--nash); }
.swatch-coop { background: var(--coop); }

/* Layoff-announcements table: set off with paper bg + amber left rule,
   sans headers, mono numeric column. Note row for caveats. */
.layoff-table {
  margin: 1.6rem 0;
  padding: 1rem 1.2rem 1.1rem 1.2rem;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--wedge);
  border-radius: 0 6px 6px 0;
  box-shadow: var(--shadow-sm);
  max-width: 100%;
}
.layoff-table figcaption {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--wedge);
  margin-bottom: 0.7rem;
}
.layoff-table table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}
.layoff-table thead th {
  text-align: left;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-soft);
  padding: 0.45rem 0.7rem;
  border-bottom: 1px solid var(--rule);
  white-space: nowrap;
}
.layoff-table tbody th,
.layoff-table tbody td {
  padding: 0.6rem 0.7rem;
  vertical-align: top;
  border-bottom: 1px solid var(--rule);
  color: var(--ink);
  line-height: 1.45;
  text-align: left;
}
.layoff-table tbody tr:last-child th,
.layoff-table tbody tr:last-child td {
  border-bottom: none;
}
.layoff-table tbody th {
  font-weight: 600;
  white-space: nowrap;
}
.layoff-table tbody th a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}
.layoff-table sup {
  color: var(--wedge);
  font-size: 0.72em;
  font-weight: 700;
  margin-left: 1px;
}
.layoff-table td.layoff-when {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: var(--ink-soft);
  white-space: nowrap;
}
.layoff-table td.layoff-count {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--ink);
  white-space: nowrap;
}
.layoff-table .layoff-table-note {
  margin: 0.7rem 0 0 0;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  color: var(--ink-faint);
  font-style: italic;
  line-height: 1.45;
}
.layoff-table .layoff-table-note sup {
  margin-right: 1px;
}
@media (max-width: 720px) {
  .layoff-table {
    padding: 0.85rem 0.8rem 0.9rem 0.9rem;
  }
  .layoff-table table { font-size: 0.85rem; }
  .layoff-table thead th,
  .layoff-table tbody th,
  .layoff-table tbody td {
    padding: 0.45rem 0.4rem;
  }
  .layoff-table td.layoff-count {
    font-size: 0.8rem;
  }
}

/* §4 sizing is covered by the general section.narrative rules above. */

.econ-facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.9rem;
  margin: 1.5rem 0;
}
@media (max-width: 720px) {
  .econ-facts { grid-template-columns: 1fr; }
}
.econ-fact {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 0.8rem 1rem;
  box-shadow: var(--shadow-sm);
}
.econ-fact-label {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.econ-fact-value {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  color: var(--ink);
  margin: 0.15rem 0 0.1rem 0;
}
.econ-fact-note {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  color: var(--ink-faint);
  font-style: italic;
}

.econ-panel {
  display: grid;
  grid-template-columns: minmax(300px, 380px) 1fr;
  gap: 1.5rem;
  margin-top: 1.5rem;
}
@media (max-width: 960px) {
  .econ-panel { grid-template-columns: 1fr; }
}
.econ-controls, .econ-outputs {
  padding: 1.3rem;
}

.econ-result-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: 0.5rem 0.9rem;
  align-items: center;
}
.econ-result-col-header {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-soft);
  padding: 0.3rem 0.5rem 0.3rem 0.5rem;
  border-bottom: 2px solid var(--rule);
  text-align: right;
}
.econ-col-nash { border-bottom-color: var(--nash); }
.econ-col-coop { border-bottom-color: var(--coop); }
.econ-col-wedge { border-bottom-color: var(--wedge); }
.econ-result-row-label {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: var(--ink-soft);
  padding: 0.4rem 0;
}
.econ-result-cell {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--ink);
  text-align: right;
  padding: 0.4rem 0.5rem;
  background: var(--bg);
  border-radius: 4px;
  border-left: 3px solid var(--rule);
}
.econ-result-cell.econ-col-nash { border-left-color: var(--nash); }
.econ-result-cell.econ-col-coop { border-left-color: var(--coop); }
.econ-result-cell.econ-col-wedge {
  border-left-color: var(--wedge);
  color: var(--wedge);
  font-weight: 600;
}

.econ-verdict {
  margin-top: 1.1rem;
  padding: 0.8rem 1rem;
  background: var(--bg);
  border-left: 3px solid var(--accent);
  border-radius: 0 4px 4px 0;
  font-size: 0.92rem;
  font-style: italic;
  color: var(--ink-soft);
  line-height: 1.5;
}

.econ-compare-title {
  margin: 1.6rem 0 0.3rem 0;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
}
.econ-compare-note {
  font-size: 0.84rem;
  color: var(--ink-soft);
  margin: 0 0 0.5rem 0;
  font-style: italic;
}
#econ-compare {
  width: 100%;
  height: auto;
  margin-top: 0.4rem;
}
.econ-verdict strong { color: var(--ink); font-style: normal; }

.econ-bar-footnote {
  margin-top: 0.9rem;
  font-size: 0.85rem;
  color: var(--ink-soft);
  font-style: italic;
  max-width: 880px;
  line-height: 1.55;
}
.econ-bar-footnote strong { color: var(--ink); font-style: normal; }

/* Bar chart interior styles */
.econ-bar-row-label {
  font-family: var(--font-sans);
  font-size: 12px;
  fill: var(--ink);
}
.econ-bar-share-label {
  font-family: var(--font-mono);
  font-size: 11px;
  fill: var(--ink-soft);
}
.econ-bar-share-label-inside {
  font-family: var(--font-mono);
  font-size: 11px;
  fill: var(--on-bar-light);
  font-weight: 600;
}
.econ-bar-rect.tier-low { fill: var(--tier-low); }
.econ-bar-rect.econ-bar-trap {
  fill: var(--accent);
  stroke: var(--accent);
  stroke-width: 1.5;
}
.econ-bar-trap-label {
  font-weight: 700;
  fill: var(--accent);
}

/* ========= Utility ========= */

.math {
  font-family: "KaTeX_Main", var(--font-serif);
}

@media (max-width: 640px) {
  h1 { font-size: 1.9rem; }
  h2 { font-size: 1.3rem; }
  .page-header { padding: 2.5rem 1rem 1.5rem 1rem; }
  main { padding: 1rem 1rem 3rem 1rem; }
  .pd-choice-row { grid-template-columns: 1fr; }
}

/* ========= Theme-aware SVG strokes / fills =========
   Any color that was previously hardcoded in app.js now routes through
   tokens so that toggling data-theme recolors the SVG automatically. */

.zero-line {
  stroke: var(--chart-axis);
  stroke-width: 1;
}

.bar-text-inside { fill: var(--on-bar-light); }
.bar-text-outside { fill: var(--on-bar-dark); }

.demo-x-tick {
  stroke: var(--chart-axis);
  stroke-width: 1;
}

.chart-gridline {
  stroke: var(--chart-grid);
  stroke-width: 1;
  stroke-dasharray: 2 3;
}
.chart-gridline-faint {
  stroke: var(--chart-grid-faint);
  stroke-width: 1;
  stroke-dasharray: 2 3;
}
.chart-gridline--zero { stroke-dasharray: 0; }