/* ============================================================
   BOOK PAGE — book.html
   ============================================================ */

/* ====================== HERO ====================== */
.book-hero {
  position: relative;
  padding: var(--space-3xl) 0 var(--space-2xl);
  background:
    radial-gradient(circle at 15% 20%, rgba(196, 112, 75, 0.10), transparent 55%),
    radial-gradient(circle at 85% 80%, rgba(122, 158, 126, 0.10), transparent 55%),
    linear-gradient(180deg, var(--color-warm-white) 0%, var(--color-cream) 100%);
  overflow: hidden;
}

@media (min-width: 768px) {
  .book-hero { padding: var(--space-4xl) 0 var(--space-3xl); }
}

.book-hero-inner {
  display: grid;
  gap: var(--space-2xl);
  align-items: center;
}

/* Grid items default to min-width: auto, which means a flex child
   with nowrap content (like the horizontal-scroll spec strip)
   can push the whole grid wider than the viewport. min-width: 0
   lets the grid track shrink and scroll within itself. */
.book-hero-inner > * {
  min-width: 0;
}

@media (min-width: 900px) {
  .book-hero-inner {
    grid-template-columns: minmax(260px, 420px) 1fr;
    gap: var(--space-4xl);
  }
}

/* Book cover with 3D tilt + shadow */
.book-hero-cover-wrap {
  position: relative;
  display: flex;
  justify-content: center;
  perspective: 1500px;
}

.book-hero-cover {
  position: relative;
  width: 100%;
  max-width: 320px;
  aspect-ratio: 2 / 3;
  transform-style: preserve-3d;
  transform: rotateY(-12deg) rotateX(2deg);
  transition: transform 600ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

@media (min-width: 768px) {
  .book-hero-cover { max-width: 360px; }
}

.book-hero-cover-wrap:hover .book-hero-cover {
  transform: rotateY(-6deg) rotateX(1deg) translateY(-6px);
}

.book-hero-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 4px 10px 10px 4px;
  box-shadow:
    0 30px 60px -20px rgba(45, 42, 38, 0.45),
    0 18px 36px -12px rgba(45, 42, 38, 0.25),
    -2px 0 0 rgba(0, 0, 0, 0.05);
  display: block;
}

/* Spine highlight on the left edge */
.book-hero-cover::before {
  content: '';
  position: absolute;
  top: 0; bottom: 0; left: 0;
  width: 14px;
  background: linear-gradient(90deg,
    rgba(0, 0, 0, 0.25) 0%,
    rgba(0, 0, 0, 0.10) 40%,
    rgba(255, 255, 255, 0.05) 100%);
  border-radius: 4px 0 0 4px;
  z-index: 2;
  pointer-events: none;
}

/* Page edge highlight on the right */
.book-hero-cover::after {
  content: '';
  position: absolute;
  top: 4px; bottom: 4px; right: -3px;
  width: 6px;
  background: repeating-linear-gradient(
    90deg,
    #f5efe5 0px, #f5efe5 1px,
    #e8dfd1 1px, #e8dfd1 2px);
  border-radius: 0 2px 2px 0;
  box-shadow: inset -1px 0 0 rgba(0, 0, 0, 0.08);
  z-index: 1;
  pointer-events: none;
}

/* Floating rating badge */
.book-hero-rating {
  position: absolute;
  bottom: -18px;
  right: 6%;
  background: var(--color-warm-white);
  color: var(--color-charcoal);
  padding: 10px 16px;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-lg);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 700;
  border: 1px solid var(--color-border);
  z-index: 3;
}

.book-hero-rating-stars {
  color: var(--color-gold-soft);
  letter-spacing: 1px;
}

.book-hero-rating-text {
  color: var(--color-brown-soft);
  font-weight: 600;
  font-size: 0.85rem;
}

/* Hero text */
.book-hero-text {
  text-align: center;
}

@media (min-width: 900px) {
  .book-hero-text { text-align: left; }
}

.book-hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-sage-dark);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
}

.book-hero-eyebrow svg {
  width: 18px;
  height: 18px;
}

.book-hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 1.08;
  color: var(--color-charcoal);
  margin: 0 0 var(--space-sm);
}

.book-hero-subtitle {
  display: block;
  font-family: var(--font-accent);
  font-style: italic;
  font-size: clamp(1.3rem, 2.6vw, 1.85rem);
  font-weight: 500;
  color: var(--color-terracotta);
  margin-top: 0.4rem;
}

.book-hero-author {
  font-size: 1.05rem;
  color: var(--color-brown-soft);
  margin-bottom: var(--space-lg);
  letter-spacing: 0.02em;
}

.book-hero-author strong {
  color: var(--color-charcoal);
  font-weight: 600;
}

.book-hero-tagline {
  font-size: 1.15rem;
  line-height: 1.65;
  color: var(--color-charcoal);
  margin-bottom: var(--space-xl);
  max-width: 560px;
}

@media (min-width: 900px) {
  .book-hero-tagline { font-size: 1.2rem; }
  .book-hero-text { padding-right: var(--space-md); }
}

@media (max-width: 899px) {
  .book-hero-tagline { margin-left: auto; margin-right: auto; }
}

/* CTA group */
.book-hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

@media (max-width: 899px) {
  .book-hero-ctas { justify-content: center; }
}

.book-hero-ctas .btn {
  font-size: 1rem;
  padding: 14px 22px;
}

.book-hero-price {
  font-weight: 600;
  margin-left: 6px;
  opacity: 0.9;
}

/* Spec strip */
.book-hero-specs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: rgba(255, 253, 249, 0.7);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(4px);
  max-width: 560px;
}

@media (min-width: 600px) {
  .book-hero-specs { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 899px) {
  .book-hero-specs { margin-left: auto; margin-right: auto; }
}

.book-spec {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.book-spec-value {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-charcoal);
}

.book-spec-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-brown-soft);
  font-weight: 600;
}

/* ====================== AUTHOR'S NOTE ====================== */
.author-note {
  padding: var(--space-3xl) 0;
  background: var(--color-cream);
  position: relative;
}

@media (min-width: 768px) {
  .author-note { padding: var(--space-4xl) 0; }
}

.author-note-inner {
  max-width: 780px;
  margin: 0 auto;
  background: var(--color-warm-white);
  border-radius: var(--radius-2xl);
  padding: var(--space-2xl) var(--space-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  position: relative;
}

@media (min-width: 768px) {
  .author-note-inner {
    padding: var(--space-3xl) var(--space-3xl);
  }
}

.author-note-quote-mark {
  position: absolute;
  top: 12px;
  left: 22px;
  font-family: var(--font-heading);
  font-size: 6rem;
  line-height: 1;
  color: var(--color-terracotta-light);
  opacity: 0.45;
  pointer-events: none;
  user-select: none;
}

.author-note-eyebrow {
  font-family: var(--font-body);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-sage);
  text-align: center;
  margin-bottom: var(--space-sm);
}

.author-note-heading {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 3.4vw, 2.2rem);
  text-align: center;
  margin-bottom: var(--space-xl);
  color: var(--color-charcoal);
}

.author-note-body {
  font-family: var(--font-accent);
  font-size: 1.2rem;
  font-weight: 500;
  line-height: 1.75;
  color: var(--color-charcoal);
}

@media (min-width: 768px) {
  .author-note-body { font-size: 1.3rem; }
}

.author-note-body p {
  margin-bottom: var(--space-md);
}

.author-note-body p:last-child { margin-bottom: 0; }

.author-note-signature {
  margin-top: var(--space-lg);
  text-align: right;
  font-family: var(--font-accent);
  font-style: italic;
  font-size: 1.15rem;
  color: var(--color-terracotta);
  font-weight: 600;
}

/* ====================== INSIDE THE BOOK (themes) ====================== */
.book-themes {
  padding: var(--space-3xl) 0;
}

@media (min-width: 768px) {
  .book-themes { padding: var(--space-4xl) 0; }
}

.book-themes-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-2xl);
}

.book-themes-grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: 1fr;
}

@media (min-width: 700px) {
  .book-themes-grid { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 1100px) {
  .book-themes-grid { grid-template-columns: 1fr 1fr 1fr; }
}

.theme-card {
  background: var(--color-warm-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  position: relative;
  transition: transform 280ms ease, box-shadow 280ms ease, border-color 280ms ease;
  display: flex;
  flex-direction: column;
}

.theme-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-sage-light);
}

.theme-card-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.theme-card-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--color-sage-light), var(--color-sage));
  color: var(--color-warm-white);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(122, 158, 126, 0.35);
}

.theme-card-icon svg {
  width: 26px;
  height: 26px;
  stroke-width: 1.8;
}

.theme-card-num {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-terracotta);
  font-weight: 700;
}

.theme-card-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  color: var(--color-charcoal);
  margin: 4px 0 0;
  line-height: 1.25;
}

.theme-card-desc {
  font-size: 0.98rem;
  line-height: 1.6;
  color: var(--color-brown-soft);
  margin-bottom: var(--space-md);
}

.theme-card-chapters {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px dashed var(--color-border);
  padding-top: var(--space-md);
}

.theme-card-chapters li {
  font-size: 0.92rem;
  color: var(--color-charcoal);
  padding: 6px 0 6px 22px;
  position: relative;
  line-height: 1.5;
}

.theme-card-chapters li::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 12px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-sage-light);
  box-shadow: 0 0 0 2px rgba(122, 158, 126, 0.15);
}

/* ====================== READ THE OPENING ====================== */
.book-sample {
  padding: var(--space-3xl) 0;
  background:
    linear-gradient(180deg, var(--color-cream), var(--color-warm-white));
  position: relative;
}

@media (min-width: 768px) {
  .book-sample { padding: var(--space-4xl) 0; }
}

.book-sample-inner {
  max-width: 820px;
  margin: 0 auto;
  position: relative;
}

.book-sample-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.book-sample-eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-sage);
  margin-bottom: var(--space-sm);
}

.book-sample-heading {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  color: var(--color-charcoal);
  margin-bottom: var(--space-sm);
}

.book-sample-chapter {
  font-family: var(--font-accent);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--color-terracotta);
  font-weight: 600;
}

/* The "page" */
.book-sample-page {
  background: var(--color-warm-white);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl) var(--space-lg);
  box-shadow:
    0 30px 60px -20px rgba(45, 42, 38, 0.18),
    0 0 0 1px var(--color-border);
  position: relative;
  overflow: hidden;
}

@media (min-width: 768px) {
  .book-sample-page {
    padding: var(--space-3xl) var(--space-3xl);
  }
}

/* Subtle ruled-page vibe */
.book-sample-page::before {
  content: '';
  position: absolute;
  top: 0; bottom: 0; left: 28px;
  width: 1px;
  background: var(--color-terracotta-light);
  opacity: 0.35;
}

@media (min-width: 768px) {
  .book-sample-page::before { left: 50px; }
}

.book-sample-body {
  font-family: var(--font-accent);
  font-size: 1.18rem;
  font-weight: 500;
  line-height: 1.85;
  color: var(--color-charcoal);
}

@media (min-width: 768px) {
  .book-sample-body { font-size: 1.28rem; }
}

.book-sample-body p { margin-bottom: var(--space-md); }
.book-sample-body p:last-child { margin-bottom: 0; }

.book-sample-body p:first-child::first-letter {
  font-family: var(--font-heading);
  font-size: 4.2rem;
  float: left;
  line-height: 0.85;
  padding: 6px 10px 0 0;
  color: var(--color-terracotta);
  font-weight: 700;
}

.book-sample-cta {
  text-align: center;
  margin-top: var(--space-xl);
}

/* ====================== EXCERPT TABS ====================== */
.book-excerpts {
  padding: var(--space-3xl) 0;
}

@media (min-width: 768px) {
  .book-excerpts { padding: var(--space-4xl) 0; }
}

.book-excerpts-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-2xl);
}

.excerpt-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: var(--space-xl);
  padding: 0;
  list-style: none;
}

.excerpt-tab {
  background: var(--color-warm-white);
  border: 2px solid var(--color-border);
  color: var(--color-brown-soft);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all 200ms ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.excerpt-tab:hover {
  border-color: var(--color-sage-light);
  color: var(--color-sage-dark);
  transform: translateY(-1px);
}

.excerpt-tab[aria-selected="true"] {
  background: var(--color-sage-dark);
  border-color: var(--color-sage-dark);
  color: var(--color-warm-white);
  box-shadow: 0 6px 18px rgba(90, 126, 94, 0.35);
}

.excerpt-tab-num {
  font-family: var(--font-heading);
  font-size: 0.78rem;
  opacity: 0.8;
}

.excerpt-panels {
  position: relative;
  max-width: 880px;
  margin: 0 auto;
}

.excerpt-panel {
  display: none;
  background: var(--color-warm-white);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  animation: excerpt-fade 400ms ease;
}

.excerpt-panel.is-active {
  display: block;
}

@media (min-width: 768px) {
  .excerpt-panel {
    padding: var(--space-2xl) var(--space-3xl);
  }
}

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

.excerpt-panel-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  align-items: center;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px dashed var(--color-border);
}

.excerpt-chip {
  display: inline-block;
  background: rgba(196, 112, 75, 0.10);
  color: var(--color-terracotta);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 4px 12px;
  border-radius: var(--radius-full);
}

.excerpt-from {
  font-family: var(--font-accent);
  font-style: italic;
  font-weight: 500;
  color: var(--color-brown-soft);
  font-size: 1rem;
}

.excerpt-from strong {
  color: var(--color-charcoal);
  font-weight: 600;
}

.excerpt-body {
  font-family: var(--font-accent);
  font-size: 1.15rem;
  font-weight: 500;
  line-height: 1.8;
  color: var(--color-charcoal);
}

@media (min-width: 768px) {
  .excerpt-body { font-size: 1.22rem; }
}

.excerpt-body p {
  margin-bottom: var(--space-md);
  position: relative;
}

.excerpt-body p:last-child { margin-bottom: 0; }

/* ====================== REVIEWS WALL ====================== */
.book-reviews {
  padding: var(--space-3xl) 0;
  background: var(--color-cream);
}

@media (min-width: 768px) {
  .book-reviews { padding: var(--space-4xl) 0; }
}

.book-reviews-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-2xl);
}

.book-reviews-rating {
  display: inline-flex;
  align-items: center;
  gap: var(--space-md);
  background: var(--color-warm-white);
  padding: 12px 24px;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  margin-bottom: var(--space-lg);
}

.book-reviews-rating-num {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-charcoal);
  line-height: 1;
}

.book-reviews-rating-stars {
  color: var(--color-gold-soft);
  letter-spacing: 2px;
  font-size: 1.1rem;
}

.book-reviews-rating-text {
  color: var(--color-brown-soft);
  font-size: 0.9rem;
  font-weight: 600;
  text-align: left;
  line-height: 1.3;
}

.book-reviews-grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: 1fr;
}

@media (min-width: 700px) {
  .book-reviews-grid { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 1100px) {
  .book-reviews-grid { grid-template-columns: 1fr 1fr 1fr; }
}

.review-card {
  background: var(--color-warm-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  transition: transform 280ms ease, box-shadow 280ms ease;
  position: relative;
}

.review-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.review-card--featured {
  background: linear-gradient(180deg, #FFFDF6, var(--color-warm-white));
  border-color: var(--color-gold-soft);
  border-width: 1.5px;
}

.review-card-stars {
  color: var(--color-gold-soft);
  letter-spacing: 2px;
  margin-bottom: 8px;
  font-size: 1rem;
}

.review-card-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  margin: 0 0 var(--space-md);
  color: var(--color-charcoal);
  line-height: 1.3;
}

.review-card-quote {
  font-family: var(--font-accent);
  font-size: 1.05rem;
  font-weight: 500;
  line-height: 1.65;
  color: var(--color-charcoal);
  margin: 0 0 var(--space-md);
  flex: 1;
}

.review-card-quote p { margin: 0 0 0.6em; }
.review-card-quote p:last-child { margin-bottom: 0; }

.review-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-size: 0.85rem;
  color: var(--color-brown-soft);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-md);
}

.review-card-name {
  font-weight: 700;
  color: var(--color-charcoal);
  font-size: 0.92rem;
}

.review-card-tag {
  display: inline-block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: var(--color-cream);
  color: var(--color-brown-soft);
}

.review-card-tag--paperback {
  background: rgba(122, 158, 126, 0.18);
  color: var(--color-sage-dark);
}

.review-card-tag--kindle {
  background: rgba(196, 112, 75, 0.15);
  color: var(--color-terracotta);
}

.review-card-date {
  margin-left: auto;
  font-size: 0.8rem;
  opacity: 0.85;
}

.book-reviews-more {
  text-align: center;
  margin-top: var(--space-2xl);
}

/* ====================== WHERE TO BUY ====================== */
.book-buy {
  padding: var(--space-3xl) 0;
}

@media (min-width: 768px) {
  .book-buy { padding: var(--space-4xl) 0; }
}

.book-buy-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.book-buy-grid {
  display: grid;
  gap: var(--space-lg);
  max-width: 880px;
  margin: 0 auto;
  grid-template-columns: 1fr;
}

@media (min-width: 700px) {
  .book-buy-grid { grid-template-columns: 1fr 1fr; }
}

.buy-card {
  background: var(--color-warm-white);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-md);
  transition: transform 280ms ease, box-shadow 280ms ease, border-color 280ms ease;
}

.buy-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-terracotta-light);
}

.buy-card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.buy-card-icon--amazon {
  background: linear-gradient(135deg, #FFB300, #FF8F00);
  color: white;
}

.buy-card-icon--whatsapp {
  background: linear-gradient(135deg, #25D366, #128C7E);
  color: white;
}

.buy-card-icon svg { width: 28px; height: 28px; }

.buy-card-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  margin: 0;
  color: var(--color-charcoal);
}

.buy-card-desc {
  font-size: 1rem;
  color: var(--color-brown-soft);
  line-height: 1.6;
  margin: 0;
  flex: 1;
}

.buy-card-price {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  color: var(--color-terracotta);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.buy-card .btn {
  align-self: stretch;
  justify-content: center;
}

@media (min-width: 480px) {
  .buy-card .btn { align-self: flex-start; }
}

/* ====================== CLOSING CTA ====================== */
.book-closing {
  padding: var(--space-3xl) 0 var(--space-4xl);
  background:
    radial-gradient(ellipse at top, rgba(122, 158, 126, 0.10), transparent 60%),
    var(--color-cream);
  text-align: center;
}

.book-closing-inner {
  max-width: 680px;
  margin: 0 auto;
}

.book-closing-heading {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3.6vw, 2.4rem);
  color: var(--color-charcoal);
  margin-bottom: var(--space-md);
}

.book-closing-heading em {
  color: var(--color-terracotta);
  font-style: italic;
  font-weight: 600;
}

.book-closing-sub {
  font-size: 1.15rem;
  line-height: 1.65;
  color: var(--color-brown-soft);
  margin-bottom: var(--space-xl);
}

.book-closing-note {
  display: inline-block;
  margin-top: var(--space-md);
  font-size: 0.92rem;
  color: var(--color-brown-soft);
  font-style: italic;
}

/* ============================================================
   MOBILE-ONLY ENHANCEMENTS (<= 767px)
   Goal: cut perceived page length roughly in half without
   touching the desktop layout.
   ============================================================ */

/* Generic mobile-collapse pattern: shown collapsed with a fade,
   user taps to expand. Desktop ignores it entirely. */
.m-collapse-toggle { display: none; }

@media (max-width: 767px) {

  /* ---------- Vertical rhythm: tighter sections on mobile ---------- */
  .book-hero          { padding: var(--space-2xl) 0 var(--space-xl); }
  .book-buy           { padding: var(--space-2xl) 0; }
  .author-note        { padding: var(--space-2xl) 0; }
  .book-themes        { padding: var(--space-2xl) 0; }
  .book-sample        { padding: var(--space-2xl) 0; }
  .book-excerpts      { padding: var(--space-2xl) 0; }
  .book-reviews       { padding: var(--space-2xl) 0; }
  .book-closing       { padding: var(--space-2xl) 0 var(--space-3xl); }

  /* ---------- Generic mobile-collapse ---------- */
  .m-collapse-content {
    max-height: 9.5em;
    overflow: hidden;
    position: relative;
    -webkit-mask-image: linear-gradient(180deg, #000 55%, transparent);
            mask-image: linear-gradient(180deg, #000 55%, transparent);
    transition: max-height 400ms ease;
  }

  .m-collapse.is-expanded .m-collapse-content {
    max-height: none;
    -webkit-mask-image: none;
            mask-image: none;
  }

  .m-collapse-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: var(--space-md);
    background: transparent;
    border: 1.5px solid var(--color-sage);
    color: var(--color-sage-dark);
    font-family: var(--font-body);
    font-size: 0.92rem;
    font-weight: 700;
    padding: 8px 16px;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all 200ms ease;
  }

  .m-collapse-toggle:hover,
  .m-collapse-toggle:focus-visible {
    background: var(--color-sage);
    color: var(--color-warm-white);
    outline: none;
  }

  .m-collapse-toggle svg {
    width: 14px;
    height: 14px;
    transition: transform 250ms ease;
  }

  .m-collapse.is-expanded .m-collapse-toggle svg {
    transform: rotate(180deg);
  }

  /* ---------- Hero: tighter cover, horizontal-scroll specs ---------- */
  /* Constrain the wrap so the absolutely-positioned rating badge
     stays anchored to the book cover instead of floating to the
     right edge of the full-width column */
  .book-hero-cover-wrap {
    max-width: 240px;
    margin-left: auto;
    margin-right: auto;
  }
  .book-hero-cover { max-width: 220px; }
  .book-hero-rating { right: 0; bottom: -16px; }

  .book-hero-title { font-size: clamp(1.9rem, 9vw, 2.4rem); }
  .book-hero-subtitle { font-size: clamp(1.15rem, 5vw, 1.4rem); }

  .book-hero-tagline {
    font-size: 1.02rem;
    margin-bottom: var(--space-lg);
  }

  .book-hero-ctas {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  .book-hero-ctas .btn {
    width: 100%;
    justify-content: center;
    font-size: 0.95rem;
    padding: 12px 16px;
  }

  .book-hero-price {
    display: block;
    margin: 4px 0 0;
    font-size: 0.85rem;
  }

  /* Spec strip → horizontal scrolling chip row */
  .book-hero-specs {
    display: flex;
    flex-wrap: nowrap;
    gap: 10px;
    width: 100%;
    min-width: 0;
    max-width: 100%;
    overflow-x: auto;
    padding: 12px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .book-hero-specs::-webkit-scrollbar { display: none; }

  .book-spec {
    flex: 0 0 auto;
    min-width: 100px;
    padding: 6px 14px;
    background: var(--color-warm-white);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    scroll-snap-align: start;
  }

  .book-spec-value { font-size: 0.95rem; }
  .book-spec-label { font-size: 0.62rem; }

  /* ---------- Buy cards: tighter ---------- */
  .buy-card {
    padding: var(--space-lg);
    gap: var(--space-sm);
  }

  .buy-card-icon {
    width: 44px;
    height: 44px;
  }

  .buy-card-icon svg { width: 22px; height: 22px; }

  .buy-card-title { font-size: 1.2rem; }
  .buy-card-desc { font-size: 0.95rem; }
  .buy-card-price { font-size: 1.05rem; }

  /* ---------- Author's note: collapsed by default ---------- */
  .author-note-inner { padding: var(--space-xl) var(--space-md); }
  .author-note-quote-mark { font-size: 4.5rem; top: 4px; left: 14px; }
  .author-note-body { font-size: 1.08rem; line-height: 1.7; }
  .author-note-heading { margin-bottom: var(--space-md); }

  /* When collapsed, show roughly the first paragraph */
  .author-note .m-collapse-content {
    max-height: 12em;
  }

  /* ---------- Themes: chapter lists collapsed inside each card ---------- */
  .theme-card { padding: var(--space-lg); }

  .theme-card-header {
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
  }

  .theme-card-icon { width: 40px; height: 40px; }
  .theme-card-icon svg { width: 22px; height: 22px; }
  .theme-card-title { font-size: 1.15rem; }
  .theme-card-desc { font-size: 0.95rem; margin-bottom: 0; }

  /* Hide chapter list by default; revealed via <details open> */
  .theme-card details > summary {
    list-style: none;
    cursor: pointer;
    margin-top: var(--space-md);
    padding: 8px 12px;
    background: rgba(122, 158, 126, 0.08);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-sage-dark);
    font-weight: 700;
    font-size: 0.85rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    user-select: none;
  }

  .theme-card details > summary::-webkit-details-marker { display: none; }

  .theme-card details > summary::after {
    content: '';
    display: inline-block;
    width: 10px;
    height: 10px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: rotate(45deg);
    margin-left: 4px;
    transition: transform 250ms ease;
  }

  .theme-card details[open] > summary::after {
    transform: rotate(-135deg);
  }

  .theme-card details[open] > summary {
    background: var(--color-sage);
    color: var(--color-warm-white);
    border-color: var(--color-sage);
  }

  .theme-card .theme-card-chapters {
    border-top: none;
    margin-top: var(--space-sm);
    padding-top: 0;
  }

  /* ---------- Read the Opening: collapsible after 2 paragraphs ---------- */
  .book-sample-page {
    padding: var(--space-lg) var(--space-md);
  }

  .book-sample-body {
    font-size: 1.05rem;
    line-height: 1.75;
  }

  .book-sample-body p:first-child::first-letter {
    font-size: 3rem;
    padding: 4px 8px 0 0;
  }

  .book-sample .m-collapse-content {
    max-height: 18em;
  }

  /* ---------- Excerpt tabs: horizontal scroll strip ---------- */
  .excerpt-tabs {
    flex-wrap: nowrap;
    min-width: 0;
    max-width: 100vw;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding: 4px 16px;
    margin-left: -16px;
    margin-right: -16px;
    justify-content: flex-start;
    scroll-snap-type: x mandatory;
  }
  .excerpt-tabs::-webkit-scrollbar { display: none; }

  .excerpt-tab {
    flex: 0 0 auto;
    font-size: 0.88rem;
    padding: 8px 14px;
    scroll-snap-align: start;
  }

  /* Show short labels on mobile, long labels on desktop */
  .excerpt-tab-label-long  { display: none; }
  .excerpt-tab-label-short { display: inline; }

  .excerpt-panel { padding: var(--space-lg); }
  .excerpt-body { font-size: 1.05rem; line-height: 1.7; }

  /* ---------- Reviews: show 3, hide rest behind "Show more" ---------- */
  .review-card.is-extra { display: none; }
  .book-reviews-grid.is-expanded .review-card.is-extra { display: flex; }

  .book-reviews-toggle {
    display: flex;
    justify-content: center;
    margin-top: var(--space-lg);
  }
  .book-reviews-toggle .m-collapse-toggle { display: inline-flex; }

  .review-card { padding: var(--space-md) var(--space-lg); }
  .review-card-quote { font-size: 1rem; line-height: 1.6; }
  .review-card-title { font-size: 1.05rem; }

  /* ---------- Closing CTA tightened ---------- */
  .book-closing-heading { font-size: 1.5rem; }
  .book-closing-sub { font-size: 1rem; }

}

/* Default desktop label visibility for excerpt tabs */
.excerpt-tab-label-short { display: none; }
.excerpt-tab-label-long  { display: inline; }

/* The reviews toggle wrapper is hidden on desktop (all reviews show) */
.book-reviews-toggle { display: none; }

/* Desktop: theme card chapter accordions are always "open"
   (we hide the summary and force the list to show regardless
   of the details element's open state) */
@media (min-width: 768px) {
  .theme-card details > summary { display: none; }
  .theme-card details > .theme-card-chapters { display: block !important; }
}