/* =============================================================
   THE JOURNEY BOOK — Linda Villeneuve
   A book-themed single-page experience
   ============================================================= */

/* ===== Custom Properties ===== */
:root {
  --gold: #c9a96e;
  --gold-light: #e8d5a8;
  --gold-glow: #f5e6c8;
  --gold-dim: rgba(201, 169, 110, 0.15);
  --warm-white: #faf6f0;
  --cream: #f5efe6;
  --cream-dark: #ede4d4;
  --charcoal: #2d2d2d;
  --charcoal-light: #3d3d3d;
  --charcoal-deep: #1a1a2e;
  --text: #4a4a4a;
  --text-light: #8a8a8a;
  --text-faint: #b5b5b5;
  --font-body: 'Georgia', 'Times New Roman', serif;
  --font-heading: 'Georgia', 'Times New Roman', serif;
  --page-bg: var(--warm-white);
  --gutter-width: 30px;
  --measure: 38em;
  --leading: 1.85;
  --progress: 0;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 17px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--charcoal);
  line-height: var(--leading);
  overflow: hidden;
}

a { color: var(--gold); text-decoration: none; }
a:hover { color: var(--gold-light); }

img { max-width: 100%; height: auto; display: block; }

/* ===== Typography ===== */
.post-body,
.page-content {
  max-width: var(--measure);
  margin: 0 auto;
  text-rendering: optimizeLegibility;
  font-variant-ligatures: common-ligatures;
  -webkit-hyphens: auto;
  hyphens: auto;
}

.post-body p,
.page-content p {
  margin-bottom: 1.5rem;
}

.post-body .drop-cap::first-letter {
  font-size: 3.8em;
  float: left;
  line-height: 0.75;
  margin: 0.08em 0.15em 0 0;
  color: var(--gold);
  font-family: var(--font-heading);
  font-weight: 400;
}

.post-body figure,
.post-body .post-hero,
.post-body .post-image {
  margin: 2.5rem -2rem;
  text-align: center;
}

.post-body img {
  border-radius: 2px;
}

.post-body figure img {
  width: 100%;
  max-width: calc(100% + 4rem);
}

/* ===== Book Layout ===== */
.book {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

.book-pages {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
}

.leaf {
  /* Desktop: positioned absolutely by JS */
  width: 100vw;
  height: 100vh;
  overflow-y: auto;
  overflow-x: hidden;
  position: relative;
  scrollbar-width: thin;
  scrollbar-color: var(--gold-dim) transparent;
  /* Extra scroll space so content isn't hidden behind fixed nav chrome */
  padding-bottom: 60px;
}

.leaf::-webkit-scrollbar { width: 6px; }
.leaf::-webkit-scrollbar-track { background: transparent; }
.leaf::-webkit-scrollbar-thumb { background: var(--gold-dim); border-radius: 3px; }

/* ===== Page Turn Buttons ===== */
.page-turn {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  z-index: 120;
  background: rgba(45, 45, 45, 0.6);
  border: 1px solid rgba(201, 169, 110, 0.2);
  color: var(--gold-light);
  font-size: 1.8rem;
  line-height: 1;
  width: 44px;
  height: 64px;
  border-radius: 4px;
  cursor: pointer;
  opacity: 0.5;
  transition: opacity 0.3s, background 0.3s;
  -webkit-tap-highlight-color: transparent;
}

.page-turn:hover,
.page-turn:active {
  opacity: 1;
  background: rgba(45, 45, 45, 0.85);
}

.page-turn--prev { left: 12px; }
.page-turn--next { right: 12px; }

.page-turn.is-hidden {
  opacity: 0;
  pointer-events: none;
}

/* Paper texture on content pages */
.leaf--frontmatter,
.leaf--chapter,
.leaf--toc {
  background-color: var(--page-bg);
  background-image:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 28px,
      rgba(201, 169, 110, 0.03) 28px,
      rgba(201, 169, 110, 0.03) 29px
    );
}

/* Gutter shadow (binding edge) */
.leaf--frontmatter::before,
.leaf--chapter::before,
.leaf--toc::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--gutter-width);
  background: linear-gradient(to right, rgba(0,0,0,0.06) 0%, transparent 100%);
  pointer-events: none;
  z-index: 2;
}

/* Outer edge shadow */
.leaf--frontmatter::after,
.leaf--chapter::after,
.leaf--toc::after {
  content: '';
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 15px;
  background: linear-gradient(to left, rgba(0,0,0,0.04) 0%, transparent 100%);
  pointer-events: none;
  z-index: 2;
}

/* ===== Cover ===== */
.leaf--cover {
  background: linear-gradient(160deg, var(--charcoal) 0%, var(--charcoal-deep) 50%, #12121f 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* Gilded border */
.leaf--cover::before {
  content: '';
  position: absolute;
  inset: 20px;
  border: 1px solid var(--gold-dim);
  border-radius: 2px;
  pointer-events: none;
}

/* Radial glow */
.leaf--cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 40%, rgba(201, 169, 110, 0.12) 0%, transparent 65%);
  pointer-events: none;
}

.cover-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 2rem;
}

.cover-title {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold-light);
  margin-bottom: 0.6rem;
  opacity: 0;
  transform: translateY(20px);
  animation: coverReveal 1.2s ease-out 0.3s forwards;
}

.cover-rule {
  width: 120px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  margin: 1.2rem auto;
  opacity: 0;
  animation: coverReveal 1s ease-out 0.8s forwards;
}

.cover-subtitle {
  font-family: var(--font-heading);
  font-size: clamp(1rem, 2.5vw, 1.4rem);
  color: var(--gold);
  font-style: italic;
  letter-spacing: 0.12em;
  margin-bottom: 0.4rem;
  opacity: 0;
  animation: coverReveal 1s ease-out 1s forwards;
}

.cover-tagline {
  font-size: 0.85rem;
  color: var(--text-light);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  opacity: 0;
  animation: coverReveal 1s ease-out 1.2s forwards;
}

.cover-ornament {
  color: var(--gold-dim);
  font-size: 1.2rem;
  letter-spacing: 0.5em;
  opacity: 0;
  animation: coverReveal 1s ease-out 0.6s forwards;
}

.cover-ornament--top { margin-bottom: 2rem; }
.cover-ornament--bottom { margin-top: 2rem; }

.cover-prompt {
  margin-top: 3rem;
  text-align: center;
  opacity: 0;
  animation: coverReveal 1s ease-out 1.8s forwards;
}

.cover-prompt__text {
  display: block;
  font-size: 0.75rem;
  color: var(--text-light);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.cover-prompt__arrow {
  display: inline-block;
  color: var(--gold);
  font-size: 1.2rem;
  animation: promptBounce 2s ease-in-out 2.5s infinite;
}

@keyframes coverReveal {
  to { opacity: 1; transform: translateY(0); }
}

@keyframes promptBounce {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(-8px); }
}

/* ===== Table of Contents ===== */
.leaf--toc {
  display: flex;
  align-items: center;
  justify-content: center;
}

.toc-inner {
  max-width: 500px;
  width: 100%;
  padding: 3rem 2rem 6rem;
}

.toc-heading {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--charcoal);
  text-align: center;
  margin-bottom: 0.8rem;
}

.toc-rule {
  width: 60px;
  height: 1px;
  background: var(--gold);
  margin: 0 auto 2.5rem;
}

.toc-section { margin-bottom: 2rem; }

.toc-section__label {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: 0.8rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--gold-dim);
}

.toc-list {
  list-style: none;
  counter-reset: toc-counter;
}

.toc-list--chapters { counter-reset: chapter-counter; }

.toc-list li {
  counter-increment: toc-counter;
}

.toc-list--chapters li {
  counter-increment: chapter-counter;
}

.toc-entry {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.35rem 0;
  color: var(--text);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s;
}

.toc-entry:hover {
  color: var(--gold);
}

.toc-entry__title {
  flex: 0 0 auto;
}

.toc-entry__dots {
  flex: 1 1 auto;
  border-bottom: 1px dotted var(--text-faint);
  min-width: 20px;
  margin-bottom: 0.25em;
}

.toc-entry__num,
.toc-entry__date {
  flex: 0 0 auto;
  font-size: 0.8rem;
  color: var(--text-light);
  font-style: italic;
}

/* ===== Front Matter (Pages) ===== */
.leaf--frontmatter {
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

.leaf--frontmatter .leaf-content {
  max-width: var(--measure);
  padding: 6vh 2rem 6rem;
  width: 100%;
}

.frontmatter-number {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  color: var(--text-light);
  font-style: italic;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--charcoal);
  margin-bottom: 2rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--gold-light);
}

.page-content p {
  color: var(--text);
}

.page-content em {
  color: var(--text);
}

/* ===== Chapter Divider ===== */
.leaf--divider {
  background: linear-gradient(160deg, var(--charcoal) 0%, var(--charcoal-deep) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.divider-inner {
  text-align: center;
  padding: 3rem 2rem;
  max-width: 600px;
  width: 100%;
}

.divider-ornament {
  color: var(--gold-dim);
  font-size: 1.2rem;
  letter-spacing: 0.5em;
  margin-bottom: 1.5rem;
}

.divider-title {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold-light);
  margin-bottom: 0.5rem;
}

.divider-subtitle {
  font-size: 0.9rem;
  color: var(--text-light);
  font-style: italic;
  letter-spacing: 0.05em;
  margin-bottom: 1.5rem;
}

.divider-rule {
  width: 80px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  margin: 0 auto 2.5rem;
}

/* Timeline on divider page */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  text-align: left;
  position: relative;
  padding-left: 2rem;
}

/* Vertical line */
.timeline::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--gold-dim);
}

.timeline-entry {
  position: relative;
  padding: 0.6rem 0 0.6rem 1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  transition: transform 0.2s;
}

.timeline-entry:hover { transform: translateX(4px); }

/* Dot on timeline */
.timeline-entry::before {
  content: '';
  position: absolute;
  left: -2rem;
  top: 50%;
  transform: translate(-50%, -50%);
  left: -1.48rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--charcoal);
  border: 1px solid var(--gold);
  transition: background 0.2s;
}

.timeline-entry:hover::before {
  background: var(--gold);
}

.timeline-entry__number {
  font-size: 0.7rem;
  color: var(--gold);
  font-weight: 700;
  min-width: 1.2em;
}

.timeline-entry__thumb {
  display: inline-block;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-size: cover;
  background-position: center;
  border: 1px solid var(--gold-dim);
  flex-shrink: 0;
}

.timeline-entry__title {
  font-size: 0.85rem;
  color: var(--gold-light);
}

.timeline-entry__date {
  font-size: 0.7rem;
  color: var(--text-light);
  font-style: italic;
  flex-basis: 100%;
  padding-left: 2.2rem;
}

/* ===== Chapters (Posts) ===== */
.leaf--chapter {
  display: flex;
  flex-direction: column;
}

.chapter-hero {
  flex: 0 0 auto;
  width: 100%;
  height: 45vh;
  min-height: 300px;
  background-size: cover;
  background-position: center;
  position: relative;
}

/* Gradient fade from hero image into page */
.chapter-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 40%;
  background: linear-gradient(to top, var(--page-bg) 0%, transparent 100%);
}

.chapter-content {
  flex: 1 1 auto;
  max-width: var(--measure);
  width: 100%;
  margin: 0 auto;
  padding: 0 2rem 6rem;
}

.chapter-header {
  position: relative;
  margin-bottom: 2.5rem;
  padding-top: 1rem;
}

/* Large faint chapter number behind title */
.chapter-number {
  position: absolute;
  top: -0.6rem;
  right: 0;
  font-family: var(--font-heading);
  font-size: 8rem;
  font-weight: 400;
  color: var(--gold);
  opacity: 0.06;
  line-height: 1;
  pointer-events: none;
  user-select: none;
}

.chapter-date {
  display: block;
  font-size: 0.8rem;
  color: var(--gold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.chapter-title {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 400;
  color: var(--charcoal);
  line-height: 1.3;
}

/* End-of-page rule */
.page-end-rule {
  width: 80px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  margin: 3rem auto 2rem;
}

/* Chapter bottom navigation */
.chapter-nav {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(0,0,0,0.08);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.chapter-nav__link {
  font-size: 0.8rem;
  color: var(--gold);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  transition: color 0.2s;
  max-width: 45%;
}

.chapter-nav__link:hover { color: var(--charcoal); }

.chapter-nav__link--next {
  margin-left: auto;
  text-align: right;
}

/* ===== Progress Bar ===== */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: calc(var(--progress) * 100%);
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  z-index: 200;
  transition: width 0.15s linear;
  pointer-events: none;
}

/* ===== Spine Navigation ===== */
.spine-nav {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 150;
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--charcoal);
  border: 1px solid rgba(201, 169, 110, 0.2);
  border-radius: 6px;
  padding: 0;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  max-width: 90vw;
}

.spine-nav__toggle {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.65rem 1.2rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--gold-light);
  font-family: var(--font-body);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.spine-nav__icon {
  font-size: 1rem;
  transition: transform 0.3s;
}

.spine-nav[aria-expanded="true"] .spine-nav__icon {
  transform: rotate(90deg);
}

.spine-nav__current {
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.spine-nav__list {
  display: none;
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  min-width: 360px;
  width: max-content;
  max-width: min(520px, 92vw);
  margin-bottom: 8px;
  background: var(--charcoal);
  border: 1px solid rgba(201, 169, 110, 0.2);
  border-radius: 6px;
  padding: 0.5rem 0;
  box-shadow: 0 -8px 30px rgba(0,0,0,0.5);
  max-height: 60vh;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--gold-dim) transparent;

  /* Opening animation */
  opacity: 0;
  transform: translateX(-50%) translateY(8px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.spine-nav__list.is-open {
  display: block;
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Two-step display+animate: show first, then animate.
   We use @starting-style for browsers that support it. */
@supports (selector(:open)) or (not (animation: none)) {
  .spine-nav__list.is-open {
    animation: navSlideUp 0.25s ease forwards;
  }
}

@keyframes navSlideUp {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

.spine-nav__item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.5rem 1.2rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-light);
  font-family: var(--font-body);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  text-align: left;
  transition: color 0.2s, background 0.2s;
}

.spine-nav__item-title {
  flex: 1 1 auto;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.spine-nav__read-badge {
  flex: 0 0 auto;
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold);
  opacity: 0;
  transform: scale(0.8);
  transition: opacity 0.4s ease, transform 0.4s ease;
  padding: 0.15em 0.5em;
  border: 1px solid var(--gold-dim);
  border-radius: 3px;
}

.spine-nav__item.is-read .spine-nav__read-badge {
  opacity: 1;
  transform: scale(1);
}

.spine-nav__item:hover {
  color: var(--gold-light);
  background: rgba(201, 169, 110, 0.08);
}

.spine-nav__item.is-active {
  color: var(--gold);
  background: rgba(201, 169, 110, 0.06);
}

.spine-nav__item--divider {
  height: 1px;
  background: rgba(201, 169, 110, 0.12);
  margin: 0.3rem 1rem;
  padding: 0;
  pointer-events: none;
}

/* ===== Endmatter (Footer) ===== */
.leaf--endmatter {
  background: linear-gradient(160deg, var(--charcoal) 0%, var(--charcoal-deep) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.endmatter-inner {
  text-align: center;
  padding: 3rem 2rem;
}

.endmatter-ornament {
  color: var(--gold-dim);
  font-size: 1.2rem;
  letter-spacing: 0.5em;
  margin-bottom: 1.5rem;
}

.endmatter-ornament:last-child { margin-bottom: 0; margin-top: 2rem; }

.endmatter-name {
  font-family: var(--font-heading);
  font-size: clamp(1.4rem, 3vw, 2rem);
  color: var(--gold-light);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.8rem;
}

.endmatter-rule {
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  margin: 1rem auto;
}

.endmatter-tagline {
  color: var(--gold);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  margin-bottom: 1.5rem;
}

.endmatter-note {
  font-size: 0.8rem;
  color: var(--text-light);
  font-style: italic;
  line-height: 1.8;
}

/* ===== Scroll Reveal Animation ===== */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-delay: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .cover-title, .cover-rule, .cover-subtitle,
  .cover-tagline, .cover-ornament, .cover-prompt {
    opacity: 1;
    transform: none;
  }
  .page-turn { transition-duration: 0.01ms !important; }
}

/* ===== No-JS Fallback ===== */
.no-js { overflow: visible; }
.no-js .book { height: auto; overflow: visible; }
.no-js .book-pages {
  display: flex;
  flex-direction: column;
  width: 100%;
  height: auto;
  overflow: visible;
}
.no-js .leaf {
  position: relative;
  width: 100%;
  height: auto;
  min-height: 100vh;
  overflow: visible;
}
.no-js .progress-bar { display: none; }
.no-js .spine-nav { display: none; }
.no-js .page-turn { display: none; }
.no-js .reveal { opacity: 1; transform: none; }
.no-js .cover-title, .no-js .cover-rule, .no-js .cover-subtitle,
.no-js .cover-tagline, .no-js .cover-ornament, .no-js .cover-prompt {
  opacity: 1; transform: none;
}

/* ===== Mobile (< 768px) ===== */
@media (max-width: 767px) {
  :root {
    --gutter-width: 0px;
    --measure: 100%;
  }

  html { font-size: 16px; }

  .leaf {
    padding-bottom: 140px;
  }

  /* Remove gutter/edge shadows on mobile */
  .leaf--frontmatter::before,
  .leaf--chapter::before,
  .leaf--toc::before,
  .leaf--frontmatter::after,
  .leaf--chapter::after,
  .leaf--toc::after {
    display: none;
  }

  /* Cover adjustments */
  .leaf--cover::before { inset: 12px; }

  .cover-prompt { margin-top: 2rem; }

  /* TOC */
  .toc-inner { padding: 2rem 1.5rem; }

  /* Front matter */
  .leaf--frontmatter .leaf-content {
    padding: 4vh 1.5rem 8rem;
  }

  /* Chapter hero */
  .chapter-hero {
    height: 35vh;
    min-height: 220px;
  }

  .chapter-content {
    padding: 0 1.5rem 8rem;
  }

  .chapter-number {
    font-size: 5rem;
    top: -0.3rem;
  }

  .post-body figure,
  .post-body .post-hero,
  .post-body .post-image {
    margin: 1.5rem -1.5rem;
  }

  /* Page turn buttons — larger touch targets, lower position */
  .page-turn {
    top: auto;
    bottom: 70px;
    transform: none;
    width: 48px;
    height: 56px;
    font-size: 2rem;
    opacity: 0.6;
  }

  .page-turn--prev { left: 8px; }
  .page-turn--next { right: 8px; }

  /* Spine nav — centered pill button on mobile */
  .spine-nav {
    bottom: 0.75rem;
    left: 0;
    right: 0;
    transform: none;
    margin: 0 auto;
    width: fit-content;
    border-radius: 24px;
    max-width: 80vw;
    border: 1px solid rgba(201, 169, 110, 0.35);
  }

  .spine-nav__toggle {
    padding: 0.55rem 1.2rem;
  }

  .spine-nav__list {
    position: fixed;
    left: 4px;
    right: 4px;
    bottom: 3.5rem;
    transform: none;
    min-width: 0;
    width: auto;
    max-width: none;
    border-radius: 8px;
    max-height: 70vh;
  }

  .spine-nav__list.is-open {
    transform: translateY(0);
  }

  @keyframes navSlideUp {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
  }

  .spine-nav__current { max-width: 60vw; }

  /* Timeline layout on mobile */
  .timeline { padding-left: 1.5rem; }
  .timeline-entry__date { padding-left: 1.7rem; }
  .timeline-entry__thumb { width: 28px; height: 28px; }
}

/* ===== Large screens (> 1200px) ===== */
@media (min-width: 1200px) {
  .leaf--frontmatter .leaf-content {
    padding: 8vh 4rem 4rem;
  }

  .chapter-content {
    padding: 0 3rem 5rem;
  }

  .chapter-number { font-size: 10rem; }
}

/* ===== Language Selector ===== */
.lang-switch {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  color: var(--gold-light);
  font-family: var(--font-body);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  text-decoration: none;
  opacity: 0.7;
  transition: opacity 0.2s;
  z-index: 10;
}
.lang-switch:hover { opacity: 1; text-decoration: underline; }

.spine-nav__lang {
  border-top: 1px solid var(--gold-dim);
  padding: 0.5rem 0.75rem;
  text-align: center;
}
.spine-nav__lang-link {
  color: var(--gold);
  font-size: 0.8rem;
  text-decoration: none;
  letter-spacing: 0.05em;
}
.spine-nav__lang-link:hover { text-decoration: underline; }

/* ===== Print ===== */
@media print {
  body { overflow: visible; }
  .book { height: auto; overflow: visible; }
  .book-pages { display: block; width: 100%; height: auto; overflow: visible; scroll-snap-type: none; }
  .leaf { width: 100%; height: auto; min-height: 0; overflow: visible; break-after: page; }
  .progress-bar, .spine-nav, .cover-prompt, .page-turn { display: none; }
  .leaf--cover, .leaf--divider, .leaf--endmatter { background: white !important; }
  .leaf--cover *, .leaf--divider *, .leaf--endmatter * { color: black !important; }
}