/* ═══════════════════════════════════════════════
   Thesis Reader — Polished Design System
   ═══════════════════════════════════════════════ */

:root {
  --tr-bg: #f5f1eb;
  --tr-paper: #fffdf9;
  --tr-ink: #1f1a19;
  --tr-muted: #6a5f5c;
  --tr-accent: #8a1f31;
  --tr-accent-soft: rgba(138, 31, 49, 0.08);
  --tr-line: rgba(31, 26, 25, 0.14);
  --tr-font-size: 20px;
  --tr-table-head: rgba(138, 31, 49, 0.06);
  --tr-table-stripe: rgba(138, 31, 49, 0.025);
  --tr-table-hover: rgba(138, 31, 49, 0.06);
}

:root[data-theme='dark'],
[data-theme='dark'] {
  --tr-bg: #11161d;
  --tr-paper: #1a222d;
  --tr-ink: #e6ebef;
  --tr-muted: #b1bcc7;
  --tr-accent: #f2aeb8;
  --tr-accent-soft: rgba(242, 174, 184, 0.1);
  --tr-line: rgba(230, 235, 239, 0.16);
  --tr-table-head: rgba(242, 174, 184, 0.08);
  --tr-table-stripe: rgba(242, 174, 184, 0.04);
  --tr-table-hover: rgba(242, 174, 184, 0.08);
}

/* ── Progress Bar ────────────────────────────── */

.reader-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--tr-accent-soft);
  z-index: 2000;
  overflow: hidden;
}

.reader-progress span {
  display: block;
  height: 100%;
  width: 100%;
  transform-origin: 0 50%;
  transform: scaleX(0);
  background: linear-gradient(90deg, var(--tr-accent), #d14f67 60%, #f2aeb8);
  transition: transform .12s linear;
}

[data-theme='dark'] .reader-progress span {
  background: linear-gradient(90deg, #f2aeb8, #ffc8d1 55%, #ffe1e7);
}

/* ── Base ────────────────────────────────────── */

body.thesis-reader {
  font-size: var(--tr-font-size) !important;
  line-height: 1.65;
  background:
    radial-gradient(1100px 360px at 100% -15%, #ecd4d8 0%, transparent 62%),
    radial-gradient(860px 420px at -12% 10%, #efe8d2 0%, transparent 58%),
    var(--tr-bg);
  color: var(--tr-ink);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

[data-theme='dark'] body.thesis-reader,
body.thesis-reader[data-theme='dark'] {
  background:
    radial-gradient(1100px 360px at 100% -15%, rgba(95, 49, 60, 0.25) 0%, transparent 62%),
    radial-gradient(860px 420px at -12% 10%, rgba(67, 75, 51, 0.22) 0%, transparent 58%),
    var(--tr-bg);
  color: var(--tr-ink);
}

/* Reset main-site heading gradient fills inside reader */
body.thesis-reader :is(h1, h2, h3, h4, h5, h6) {
  background: none !important;
  -webkit-text-fill-color: currentColor !important;
  border-bottom: 0 !important;
  letter-spacing: 0;
  width: auto;
}

/* Override main-site dark-mode list bullet resets */
body.thesis-reader ul {
  list-style-type: disc !important;
  padding-left: 1.5em !important;
}

body.thesis-reader ul li {
  padding-left: 0 !important;
}

body.thesis-reader ul li::before {
  content: none !important;
  display: none !important;
}

/* ── Navbar dark mode on reader pages ────────── */

[data-theme='dark'] body.thesis-reader .navbar,
body.thesis-reader[data-theme='dark'] .navbar {
  background-color: rgba(17, 22, 29, 0.92);
  border-bottom-color: var(--tr-line);
}

[data-theme='dark'] body.thesis-reader .navbar.scrolled,
body.thesis-reader[data-theme='dark'] .navbar.scrolled {
  background-color: rgba(17, 22, 29, 0.96);
}

[data-theme='dark'] body.thesis-reader .navbar-brand,
body.thesis-reader[data-theme='dark'] .navbar-brand {
  background: none !important;
  -webkit-text-fill-color: var(--tr-ink) !important;
  color: var(--tr-ink);
}

[data-theme='dark'] body.thesis-reader .navbar-links a,
body.thesis-reader[data-theme='dark'] .navbar-links a {
  color: var(--tr-ink);
}

[data-theme='dark'] body.thesis-reader .navbar-toggle,
body.thesis-reader[data-theme='dark'] .navbar-toggle {
  color: var(--tr-ink);
}

/* ── Shell & Header ──────────────────────────── */

.thesis-shell {
  max-width: 1240px;
  margin: 0 auto;
  padding: 120px 18px 42px;
}

.thesis-head {
  padding: 24px 24px 18px;
  border: 1px solid var(--tr-line);
  border-radius: 16px;
  background: linear-gradient(140deg, rgba(255,255,255,0.92), rgba(245,232,220,0.82));
  box-shadow: 0 12px 24px rgba(20,10,8,.08);
  margin-bottom: 16px;
  backdrop-filter: blur(6px);
}

[data-theme='dark'] .thesis-head {
  background: var(--tr-paper);
  box-shadow: 0 12px 24px rgba(0,0,0,.35);
}

.thesis-head .kicker {
  margin: 0 0 6px;
  color: var(--tr-muted);
  text-transform: uppercase;
  letter-spacing: .07em;
  font-size: 0.85em;
  font-weight: 700;
}

.thesis-head h1 {
  margin: 0;
  color: var(--tr-ink);
  font-family: 'Libre Baskerville', serif;
  line-height: 1.26;
  font-size: 2em;
  letter-spacing: -0.01em;
}

.thesis-head p {
  margin: 10px 0 0;
  color: var(--tr-muted);
  font-size: 1.1em;
}

/* ── Chapter Grid ────────────────────────────── */

.chapter-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.chapter-card {
  border: 1px solid var(--tr-line);
  border-radius: 12px;
  background: var(--tr-paper);
  padding: 14px 14px 12px;
  text-decoration: none;
  color: var(--tr-ink);
  transition: transform .22s cubic-bezier(.4,0,.2,1),
              box-shadow .22s cubic-bezier(.4,0,.2,1),
              border-color .22s ease;
}

.chapter-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(19, 10, 8, 0.1);
  border-color: var(--tr-accent);
}

.chapter-card .num {
  display: inline-block;
  font-size: .76em;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--tr-muted);
  margin-bottom: 4px;
}

.chapter-card .title {
  display: block;
  font-family: 'Libre Baskerville', serif;
  color: var(--tr-ink);
  line-height: 1.35;
}

.chapter-card .chapter-tag {
  display: inline-block;
  margin-top: 6px;
  padding: .18em .55em;
  border-radius: 999px;
  border: 1px solid var(--tr-line);
  background: var(--tr-accent-soft);
  color: var(--tr-accent);
  font-size: .72em;
  font-weight: 700;
  letter-spacing: .02em;
}

.chapter-card.featured {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, rgba(138, 31, 49, 0.12), rgba(242, 174, 184, 0.08));
  border-color: rgba(138, 31, 49, 0.35);
}

[data-theme='dark'] .chapter-card.featured {
  background: linear-gradient(135deg, rgba(95, 49, 60, 0.4), rgba(34, 43, 56, 0.45));
}

.chapter-card.featured.secondary {
  background: linear-gradient(135deg, rgba(100, 100, 100, 0.08), rgba(200, 200, 200, 0.05));
  border-color: rgba(100, 100, 100, 0.25);
}

[data-theme='dark'] .chapter-card.featured.secondary {
  background: linear-gradient(135deg, rgba(80, 80, 80, 0.3), rgba(34, 43, 56, 0.4));
}

/* ── Reader Layout ───────────────────────────── */

.reader-layout {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr) 300px;
  gap: 18px;
  align-items: start;
}

.reader-article-wrap {
  grid-column: 2;
  border: 1px solid var(--tr-line);
  border-radius: 14px;
  background: var(--tr-paper);
  box-shadow: 0 14px 28px rgba(19, 10, 8, 0.08);
  overflow: hidden;
}

[data-theme='dark'] .reader-article-wrap {
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.28);
}

/* ── Side Panels ─────────────────────────────── */

.reader-panel {
  position: sticky;
  top: 92px;
  border: 1px solid var(--tr-line);
  border-radius: 12px;
  background: var(--tr-paper);
  backdrop-filter: blur(8px);
  padding: 12px;
  max-height: calc(100vh - 108px);
  overflow: auto;
}

.reader-panel-left {
  grid-column: 1;
}

.reader-panel-right {
  grid-column: 3;
}

.reader-panel h2 {
  margin: 0 0 8px;
  font-size: 0.85em;
  color: var(--tr-muted);
  text-transform: uppercase;
  letter-spacing: .06em;
}

/* Panel scrollbar polish */
.reader-panel::-webkit-scrollbar {
  width: 5px;
}

.reader-panel::-webkit-scrollbar-track {
  background: transparent;
}

.reader-panel::-webkit-scrollbar-thumb {
  background: var(--tr-line);
  border-radius: 3px;
}

/* ── Font Controls ───────────────────────────── */

.font-controls {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
}

.font-controls button {
  border: 1px solid var(--tr-line);
  background: var(--tr-paper);
  border-radius: 8px;
  color: var(--tr-ink);
  font-weight: 700;
  padding: 6px 9px;
  cursor: pointer;
  transition: border-color .18s ease, color .18s ease, background .18s ease;
}

.font-controls button:hover {
  border-color: var(--tr-accent);
  color: var(--tr-accent);
  background: var(--tr-accent-soft);
}

/* ── TOC ─────────────────────────────────────── */

#reader-toc {
  display: grid;
  gap: 4px;
  max-height: calc(100vh - 300px);
  overflow: auto;
}

#reader-toc a {
  color: var(--tr-ink);
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 7px;
  padding: 5px 7px;
  font-size: 0.85em;
  line-height: 1.35;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}

#reader-toc a:hover {
  background: var(--tr-accent-soft);
  color: var(--tr-accent);
}

#reader-toc a.active {
  background: var(--tr-accent);
  color: #fff;
  border-color: var(--tr-accent);
}

/* ── Article Body ────────────────────────────── */

.reader-article {
  max-width: 940px;
  margin: 0 auto;
  padding: 30px;
  font-size: 1em;
  line-height: 1.78;
  color: var(--tr-ink);
  font-family: 'Open Sans', 'Helvetica Neue', Arial, sans-serif;
  word-break: break-word;
  overflow-wrap: break-word;
  -webkit-hyphens: auto;
  hyphens: auto;
}

.reader-article p {
  margin: .72em 0;
}

.reader-article li {
  font-size: 0.96em;
}

/* Lists */
.reader-article ul,
.reader-article ol {
  padding-left: 1.5em;
  margin: .6em 0;
}

.reader-article li {
  margin: .3em 0;
  line-height: 1.65;
}

.reader-article li::marker {
  color: var(--tr-accent);
}

/* Headings */
.reader-article h1,
.reader-article h2,
.reader-article h3 {
  scroll-margin-top: 94px;
}

.reader-article h1 {
  font-family: 'Libre Baskerville', serif;
  font-size: 2em;
  margin: 1.7em 0 .35em;
  padding-top: 1.25em;
  border-top: 1px solid var(--tr-line) !important;
  color: var(--tr-ink);
}

.reader-article h1:first-of-type {
  border-top: 0 !important;
  padding-top: 0;
  margin-top: 0;
}

.reader-article h2 {
  font-family: 'Libre Baskerville', serif;
  font-size: 1.5em;
  margin: 1.45em 0 .3em;
  color: var(--tr-ink);
}

.reader-article h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.2em;
  margin: 1.2em 0 .25em;
  color: var(--tr-ink);
}

/* Links */
.reader-article a {
  color: var(--tr-accent);
  text-decoration-thickness: .09em;
  text-underline-offset: .12em;
  transition: color .15s ease;
}

.reader-article a:hover {
  color: #b32842;
}

[data-theme='dark'] .reader-article a {
  color: #ffc4ce;
}

[data-theme='dark'] .reader-article a:hover {
  color: #ffd9e0;
}

/* Chapter subtitle & meta */
.reader-article .chapter-subtitle {
  margin-top: .2em;
  margin-bottom: .8em;
  font-size: 1.08em;
  color: var(--tr-muted);
  font-family: 'Space Grotesk', sans-serif;
}

.reader-article .chapter-meta {
  border-left: 3px solid var(--tr-accent);
  padding-left: 12px;
  margin: .2em 0 .8em;
  color: var(--tr-muted);
  font-size: .95em;
}

.reader-article .chapter-meta p {
  margin: .2em 0;
}

.reader-article .subtab-breaker {
  display: flex;
  align-items: center;
  gap: .65em;
  margin: 1.35em 0 .35em;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.08em;
  font-weight: 700;
  color: var(--tr-ink);
}

.reader-article .subtab-breaker::before {
  content: '';
  width: .55em;
  height: .55em;
  border-radius: 50%;
  background: var(--tr-accent);
  flex: 0 0 auto;
  box-shadow: 0 0 0 4px var(--tr-accent-soft);
}

.reader-article .appendix-breaker {
  margin: 1.8em 0 .6em;
  padding: .55em .75em;
  border: 1px solid var(--tr-line);
  border-radius: 12px;
  background: linear-gradient(135deg, var(--tr-accent-soft), rgba(255, 255, 255, 0.55));
  color: var(--tr-ink);
  font-family: 'Libre Baskerville', serif;
  font-size: 1.22em;
  line-height: 1.35;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: .55em;
}

[data-theme='dark'] .reader-article .appendix-breaker {
  background: linear-gradient(135deg, rgba(242, 174, 184, 0.16), rgba(32, 41, 54, 0.85));
}

.reader-article .appendix-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.25em;
  height: 2.25em;
  padding: 0 .55em;
  border-radius: 999px;
  border: 1px solid var(--tr-line);
  background: rgba(138, 31, 49, 0.12);
  color: var(--tr-accent);
  font-family: 'Space Grotesk', sans-serif;
  font-size: .62em;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

[data-theme='dark'] .reader-article .appendix-index {
  background: rgba(242, 174, 184, 0.2);
}

.reader-article .appendix-title {
  display: block;
}

.reader-article .appendix-linkline {
  margin-top: -0.05em;
  margin-bottom: .8em;
  font-size: .92em;
  color: var(--tr-muted);
}

.reader-article .first-paper-badge {
  display: inline-block;
  margin-left: .45em;
  padding: .16em .52em;
  border-radius: 999px;
  border: 1px solid var(--tr-line);
  background: var(--tr-accent-soft);
  color: var(--tr-accent);
  font-size: .76em;
  font-weight: 700;
  letter-spacing: .02em;
  vertical-align: middle;
}

/* ── Glossary ────────────────────────────────── */

.reader-article .glossary-heading {
  font-family: 'Libre Baskerville', serif;
  margin-top: 1.7em;
  margin-bottom: .15em;
  position: relative;
  padding-bottom: .35em;
}

.reader-article .glossary-heading::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 3em;
  height: 2px;
  background: var(--tr-accent);
  border-radius: 1px;
  opacity: .6;
}

.reader-article .glossary-list {
  list-style: none;
  padding-left: 0 !important;
  margin: .7em 0 1.3em;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border: 1px solid var(--tr-line);
  border-radius: 14px;
  overflow: hidden;
  background: var(--tr-paper);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
}

[data-theme='dark'] .reader-article .glossary-list {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.22);
}

.reader-article .glossary-item {
  list-style: none;
  margin: 0;
  border: 0;
  border-bottom: 1px solid var(--tr-line);
  border-radius: 0;
  background: transparent;
  padding: .85em 1em;
  display: grid;
  grid-template-columns: minmax(180px, .38fr) 1fr;
  gap: .5em 1.2em;
  align-items: baseline;
  transition: background .15s ease;
}

.reader-article .glossary-item:last-child {
  border-bottom: 0;
}

.reader-article .glossary-item:hover {
  background: var(--tr-accent-soft);
}

.reader-article .glossary-item::before {
  content: none !important;
  display: none !important;
}

[data-theme='dark'] .reader-article .glossary-item {
  background: transparent;
}

[data-theme='dark'] .reader-article .glossary-item:hover {
  background: var(--tr-accent-soft);
}

.reader-article .glossary-item:nth-child(even) {
  background: var(--tr-table-stripe);
}

.reader-article .glossary-item:nth-child(even):hover {
  background: var(--tr-accent-soft);
}

.reader-article .glossary-item::marker {
  content: '';
}

.reader-article .glossary-term {
  display: block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: .88em;
  font-weight: 700;
  color: #c0283c !important;
  -webkit-text-fill-color: #c0283c !important;
  margin-bottom: 0;
  letter-spacing: .01em;
  line-height: 1.4;
  padding: .15em .55em;
  background: rgba(192, 40, 60, 0.07);
  border-radius: 6px;
  border-left: 3px solid #c0283c;
  word-break: break-word;
}

[data-theme='dark'] .reader-article .glossary-term {
  color: #ff6b81 !important;
  -webkit-text-fill-color: #ff6b81 !important;
  background: rgba(255, 107, 129, 0.1);
  border-left-color: #ff6b81;
}

/* Fallback when chapter HTML hasn't been transformed yet */
.reader-article .glossary-list > li > span:first-child {
  display: block;
  color: #c0283c !important;
  -webkit-text-fill-color: #c0283c !important;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  margin-bottom: .3em;
}

[data-theme='dark'] .reader-article .glossary-list > li > span:first-child {
  color: #ff6b81 !important;
  -webkit-text-fill-color: #ff6b81 !important;
}

.reader-article .glossary-def {
  display: block;
  font-family: 'Open Sans', 'Helvetica Neue', Arial, sans-serif;
  font-size: .88em;
  line-height: 1.6;
  color: var(--tr-ink);
  opacity: .85;
}

/* HR separators */
.reader-article hr {
  border: none;
  height: 1px;
  background: var(--tr-line);
  margin: 1.2em 0;
}

/* Citations */
.reader-article .citation-ref {
  font-size: 0.7em;
  vertical-align: super;
  line-height: 0;
  margin-left: 1px;
}

.reader-article .citation-link {
  text-decoration: none;
  font-weight: 700;
  transition: color .15s ease;
}

.reader-article .citation-link:hover {
  color: #b32842;
}

[data-theme='dark'] .reader-article .citation-link:hover {
  color: #ffd9e0;
}

/* ── Figures ─────────────────────────────────── */

.reader-article img {
  max-width: 100% !important;
  height: auto !important;
  display: block;
  margin: 0.8em auto;
  border-radius: 10px;
  box-shadow: 0 8px 22px rgba(0, 0, 0, .1);
}

.reader-article .chapter-figure {
  margin: 1.4em 0;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow: hidden;
}

.reader-article .chapter-figure img {
  width: auto !important;
  max-width: 100% !important;
  height: auto !important;
  max-height: 76vh;
  border-radius: 10px;
  margin: 0 auto;
  display: block;
  box-shadow: 0 8px 22px rgba(0, 0, 0, .1);
  object-fit: contain;
  transition: box-shadow .25s ease, transform .25s ease;
}

.reader-article .chapter-figure img:hover {
  box-shadow: 0 12px 32px rgba(0, 0, 0, .14);
  transform: scale(1.005);
}

.reader-article .chapter-figure img.zoomable {
  cursor: zoom-in;
}

.reader-article .chapter-figure img.is-portrait {
  width: auto !important;
  max-width: min(100%, 620px) !important;
  max-height: 78vh;
}

.reader-article .chapter-figure img.is-banner {
  width: 100% !important;
  max-width: 920px !important;
  max-height: 62vh;
}

.reader-article .chapter-figure img.is-small {
  width: auto !important;
  max-width: min(100%, 420px) !important;
}

.reader-article .chapter-figure figcaption {
  margin-top: .62em;
  font-size: .84em;
  color: var(--tr-muted);
  line-height: 1.52;
  text-align: center;
  max-width: 92%;
  font-style: italic;
  text-wrap: pretty;
}

.reader-article .chapter-figure figcaption::before {
  content: 'Caption';
  display: block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: .74em;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--tr-accent);
  margin-bottom: .25em;
  font-style: normal;
  font-weight: 700;
}

.reader-article figure.chapter-figure + figure.chapter-figure {
  margin-top: 1.6em;
}

/* ── Tables ──────────────────────────────────── */

.table-scroll {
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--tr-line);
  border-radius: 12px;
  margin: 1.2em 0;
  background: var(--tr-paper);
  -webkit-overflow-scrolling: touch;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

[data-theme='dark'] .table-scroll {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.reader-article .chapter-table,
.reader-article table {
  width: 100%;
  border-collapse: collapse;
  margin: 0;
  background: transparent;
  font-size: .92em;
  line-height: 1.55;
  table-layout: auto;
}

/* Force inline widths off on table elements */
.reader-article table [style*='width'],
.reader-article td[style],
.reader-article th[style] {
  width: auto !important;
  max-width: none !important;
}

.reader-article th {
  position: sticky;
  top: 0;
  z-index: 2;
  border-bottom: 2px solid var(--tr-line);
  padding: .65em .8em;
  vertical-align: middle;
  font-weight: 700;
  font-size: .88em;
  text-align: left;
  background: var(--tr-table-head);
  color: var(--tr-ink);
  white-space: nowrap;
  letter-spacing: .01em;
}

/* Nested headings inside th should be plain */
.reader-article th h3,
.reader-article th h2 {
  font-size: inherit !important;
  font-family: inherit !important;
  font-weight: 700;
  margin: 0 !important;
  padding: 0 !important;
}

.reader-article td {
  border-bottom: 1px solid var(--tr-line);
  padding: .6em .8em;
  vertical-align: top;
  color: var(--tr-ink);
  font-size: .94em;
}

/* Zebra striping */
.reader-article tr:nth-child(even) td {
  background: var(--tr-table-stripe);
}

/* Row hover */
.reader-article tbody tr:hover td,
.reader-article tr:hover td {
  background: var(--tr-table-hover);
  transition: background .15s ease;
}

/* Spanning header rows (subheadings within tables) */
.reader-article td[colspan] {
  font-weight: 600;
  background: var(--tr-accent-soft);
  color: var(--tr-ink);
  font-size: .9em;
  letter-spacing: .01em;
}

/* Clean up nested p/span in table cells */
.reader-article td p,
.reader-article th p {
  margin: 0;
  padding: 0;
}

.reader-article td span,
.reader-article th span {
  font-size: inherit;
}

/* ── Footer Nav ──────────────────────────────── */

.reader-note {
  font-size: 0.95em;
  color: var(--tr-muted);
  margin: 0 0 12px;
}

.shortcuts-note {
  font-size: .78em;
  letter-spacing: .01em;
  border-top: 1px dashed var(--tr-line);
  padding-top: 8px;
  margin-top: -2px;
}

.chapter-footer {
  border-top: 1px solid var(--tr-line);
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.76);
  backdrop-filter: blur(6px);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

[data-theme='dark'] .chapter-footer {
  background: rgba(26, 34, 45, 0.88);
  backdrop-filter: blur(6px);
}

.chapter-nav-link {
  border: 1px solid var(--tr-line);
  border-radius: 9px;
  padding: 8px 10px;
  text-decoration: none;
  color: var(--tr-ink);
  text-align: center;
  font-size: 0.95em;
  font-family: 'Space Grotesk', sans-serif;
  transition: border-color .18s ease, color .18s ease, background .18s ease;
}

.chapter-nav-link:hover {
  border-color: var(--tr-accent);
  color: var(--tr-accent);
  background: var(--tr-accent-soft);
}

.chapter-nav-link.center {
  font-weight: 700;
}

/* ── Digest / At-a-Glance ────────────────────── */

.reader-digest {
  border: 1px solid var(--tr-line);
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(255,255,255,0.95), rgba(245,228,231,0.75));
  padding: 10px;
  margin: 0;
}

[data-theme='dark'] .reader-digest {
  background: linear-gradient(135deg, rgba(34,43,56,0.95), rgba(65,50,58,0.7));
}

.reader-digest .digest-card {
  border: 1px solid var(--tr-line);
  border-radius: 8px;
  padding: 8px;
  background: rgba(255,255,255,0.86);
  margin-bottom: 8px;
  transition: box-shadow .2s ease;
}

.reader-digest .digest-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, .06);
}

[data-theme='dark'] .reader-digest .digest-card {
  background: rgba(31,41,54,0.9);
}

.reader-digest .digest-card:last-child { margin-bottom: 0; }

.reader-digest h3 {
  margin: 0 0 4px;
  font-size: 0.95em;
  color: var(--tr-ink);
  font-family: 'Libre Baskerville', serif;
}

.reader-digest p {
  margin: 0;
  font-size: 0.85em;
  color: var(--tr-muted);
  line-height: 1.48;
}

/* ── Prompt Examples / Code Blocks ───────────── */

.reader-article .prompt-example,
.reader-article pre[style] {
  background: rgba(140, 140, 140, 0.07) !important;
  border: 1px solid var(--tr-line) !important;
  border-radius: 10px;
  padding: .8em .95em !important;
  white-space: pre-wrap;
  overflow-x: auto;
  color: var(--tr-ink) !important;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
  font-size: .84em;
  line-height: 1.45;
}

[data-theme='dark'] .reader-article .prompt-example,
[data-theme='dark'] .reader-article pre[style] {
  background: rgba(20, 28, 38, 0.75) !important;
  color: var(--tr-ink) !important;
}

/* ── Figure Lightbox ─────────────────────────── */

.figure-lightbox {
  position: fixed;
  inset: 0;
  background: rgba(9, 12, 16, 0.88);
  display: grid;
  place-items: center;
  padding: 22px;
  z-index: 3000;
}

.figure-lightbox[hidden] {
  display: none;
}

.lightbox-figure {
  margin: 0;
  max-width: min(1200px, 96vw);
  max-height: 92vh;
  display: grid;
  gap: 10px;
  justify-items: center;
}

.lightbox-image {
  max-width: 100%;
  max-height: calc(92vh - 88px);
  border-radius: 12px;
  box-shadow: 0 18px 52px rgba(0,0,0,.45);
  object-fit: contain;
}

.lightbox-caption {
  color: #f3f5f8;
  text-align: center;
  font-size: .9em;
  line-height: 1.45;
  max-width: min(920px, 90vw);
}

.lightbox-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.28);
  background: rgba(255,255,255,.12);
  color: #fff;
  font-size: 1.35em;
  cursor: pointer;
  transition: background .15s ease;
}

.lightbox-close:hover {
  background: rgba(255,255,255,.22);
}

body.lightbox-open {
  overflow: hidden;
}

/* ── Responsive ──────────────────────────────── */

@media (max-width: 1020px) {
  .reader-layout {
    grid-template-columns: 1fr;
  }

  .reader-article-wrap,
  .reader-panel {
    grid-column: 1;
    position: relative;
    top: 0;
    max-height: none;
  }

  #reader-toc {
    max-height: none;
  }

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

@media (max-width: 720px) {
  :root {
    --tr-font-size: 18px;
  }

  /* Glossary stacks on mobile */
  .reader-article .glossary-item {
    grid-template-columns: 1fr;
    gap: .3em;
  }

  .figure-lightbox {
    padding: 12px;
  }

  .lightbox-close {
    top: 8px;
    right: 8px;
    width: 38px;
    height: 38px;
  }

  .thesis-shell {
    padding: 95px 10px 26px;
  }

  .thesis-head {
    padding: 18px 14px 14px;
  }

  .reader-article {
    padding: 18px 14px;
  }

  .chapter-footer {
    grid-template-columns: 1fr;
  }

  .reader-article .chapter-figure figcaption {
    max-width: 100%;
  }

  /* Tables can scroll on mobile */
  .reader-article .chapter-table,
  .reader-article table {
    font-size: .85em;
  }
}

/* ── Print ───────────────────────────────────── */

@media print {
  body.thesis-reader {
    font-size: 16px !important;
    background: #fff;
    color: #000;
  }

  .reader-progress,
  .reader-panel,
  .chapter-footer,
  .font-controls,
  .navbar {
    display: none !important;
  }

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

  .reader-article-wrap {
    grid-column: 1;
    border: none;
    box-shadow: none;
  }

  .reader-article .chapter-figure img {
    box-shadow: none;
    max-height: none;
    page-break-inside: avoid;
    break-inside: avoid;
  }

  .reader-article .chapter-figure {
    page-break-inside: avoid;
    break-inside: avoid;
  }

  .reader-article h1,
  .reader-article h2,
  .reader-article h3 {
    page-break-after: avoid;
    break-after: avoid;
  }
}

/* ── Selection color ─────────────────────────── */

.reader-article ::selection {
  background: rgba(138, 31, 49, 0.18);
  color: inherit;
}

[data-theme='dark'] .reader-article ::selection {
  background: rgba(242, 174, 184, 0.22);
}

/* ── References / Bibliography ────────────────── */

.reader-article .references-section {
  margin-top: 1.5em;
  padding-top: 1em;
  border-top: 2px solid var(--tr-line);
}

.reader-article .references-section h2 {
  font-family: 'Libre Baskerville', serif;
  font-size: 1.35em;
  margin-bottom: .6em;
  color: var(--tr-ink);
  letter-spacing: -0.01em;
}

.reader-article .ref-entry {
  font-size: .82em;
  line-height: 1.55;
  color: var(--tr-muted);
  padding: .45em .6em;
  border-left: 2px solid transparent;
  transition: border-color .15s ease, background .15s ease;
  margin: 0;
}

.reader-article .ref-entry:nth-child(odd) {
  background: var(--tr-table-stripe);
  border-radius: 4px;
}

.reader-article .ref-entry:hover {
  border-left-color: var(--tr-accent);
  background: var(--tr-accent-soft);
}

.reader-article .ref-entry a {
  font-size: inherit;
  color: var(--tr-muted);
  text-decoration: none;
}

.reader-article .ref-entry a:hover {
  color: var(--tr-accent);
}

[data-theme='dark'] .reader-article .ref-entry a {
  color: var(--tr-muted);
}

[data-theme='dark'] .reader-article .ref-entry a:hover {
  color: var(--tr-accent);
}

/* ── Author Line ─────────────────────────────── */

.reader-article .author-line {
  font-size: .92em;
  color: var(--tr-muted);
  margin: .1em 0 .4em;
  line-height: 1.5;
}

/* ── Section Headings Polish ─────────────────── */

.reader-article h2 {
  position: relative;
  padding-bottom: .25em;
}

.reader-article h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 2.5em;
  height: 2px;
  background: var(--tr-accent);
  border-radius: 1px;
  opacity: .5;
}

/* Exceptions: no underline on References or summary-extracted headings */
.reader-article .references-section h2::after,
.reader-article .glossary-heading::after {
  display: none;
}

/* ── Font Size Cascade Fix ───────────────────── */
/* Ensure --tr-font-size propagates to ALL content */

body.thesis-reader {
  font-size: var(--tr-font-size) !important;
}

body.thesis-reader .reader-article {
  font-size: var(--tr-font-size);
}

/* All child elements inherit; these ensure direct scaling */
body.thesis-reader .reader-article p,
body.thesis-reader .reader-article span:not(.citation-ref):not(.glossary-term):not(.glossary-def):not(.appendix-index):not(.appendix-title):not(.first-paper-badge):not(.chapter-tag) {
  font-size: inherit;
}

/* Headings scale relative to the variable */
body.thesis-reader .reader-article h1 {
  font-size: calc(var(--tr-font-size) * 2);
}

body.thesis-reader .reader-article h2 {
  font-size: calc(var(--tr-font-size) * 1.5);
}

body.thesis-reader .reader-article h3 {
  font-size: calc(var(--tr-font-size) * 1.2);
}

body.thesis-reader .reader-article li {
  font-size: calc(var(--tr-font-size) * 0.96);
}

body.thesis-reader .reader-article td,
body.thesis-reader .reader-article th {
  font-size: calc(var(--tr-font-size) * 0.85);
}

body.thesis-reader .reader-article .ref-entry {
  font-size: calc(var(--tr-font-size) * 0.82);
}

body.thesis-reader .reader-article figcaption {
  font-size: calc(var(--tr-font-size) * 0.84);
}

body.thesis-reader .reader-article .chapter-subtitle {
  font-size: calc(var(--tr-font-size) * 1.08);
}

body.thesis-reader .reader-article .chapter-meta {
  font-size: calc(var(--tr-font-size) * 0.95);
}

body.thesis-reader .reader-article .author-line {
  font-size: calc(var(--tr-font-size) * 0.92);
}

/* ── Inline style overrides for dark mode ────── */
/* Catches any inline background/color from chapter HTML */

[data-theme='dark'] .reader-article pre[style*='background'],
[data-theme='dark'] .reader-article .prompt-example[style*='background'] {
  background: rgba(20, 28, 38, 0.75) !important;
}

[data-theme='dark'] .reader-article [style*='color']:not(a) {
  color: var(--tr-ink) !important;
}