/* book.css — shared structural styles for individual book pages (themed via data-book tokens) */

body[data-book] {
  font-family: var(--font-body);
}

/* ---------- Book Hero ---------- */
.book-hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.book-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.book-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.book-hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--hero-overlay);
}
[data-book='covenant'] .book-hero__bg::after {
  background: linear-gradient(180deg, rgba(20, 13, 4, 0.35) 0%, rgba(15, 10, 3, 0.7) 55%, var(--color-bg) 100%);
}
[data-book='apocalyptic'] .book-hero__bg::after {
  background: linear-gradient(180deg, rgba(3, 4, 10, 0.35) 0%, rgba(3, 4, 10, 0.72) 55%, var(--color-bg) 100%);
}

.book-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 0.85fr;
  gap: var(--space-16);
  align-items: center;
  padding-block: var(--space-24);
  width: 100%;
}
.book-hero__copy { color: #f7f1e3; }
.book-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.4em 0.9em;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
  backdrop-filter: blur(6px);
}
[data-book='covenant'] .book-hero__kicker { background: rgba(201, 154, 74, 0.16); border: 1px solid rgba(240, 220, 176, 0.3); color: #f0dcb0; }
[data-book='apocalyptic'] .book-hero__kicker { background: rgba(163, 50, 63, 0.2); border: 1px solid rgba(243, 201, 205, 0.28); color: #f3c9cd; }

.book-hero__title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 500;
  line-height: 1.08;
  margin-bottom: var(--space-5);
}
.book-hero__subtitle {
  font-size: var(--text-lg);
  opacity: 0.9;
  max-width: 42ch;
  margin-bottom: var(--space-8);
  font-family: var(--font-body);
  font-style: italic;
}
.book-hero__meta {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
  margin-bottom: var(--space-8);
  font-size: var(--text-sm);
  opacity: 0.85;
}
.book-hero__meta strong {
  display: block;
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.65;
  margin-bottom: 2px;
  font-weight: 500;
}
.book-hero__actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.book-hero__cover-thumb {
  width: 128px;
  margin: var(--space-4) auto var(--space-6);
}
.book-hero__cover-thumb img {
  width: 100%;
  display: block;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.book-hero__cover {
  position: relative;
  display: flex;
  justify-content: center;
}
.book-cover-frame {
  width: min(320px, 100%);
  aspect-ratio: 2/3;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, 0.12);
}
.book-cover-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (max-width: 860px) {
  .book-hero__grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .book-hero__actions,
  .book-hero__meta {
    justify-content: center;
  }
  .book-hero__subtitle {
    margin-inline: auto;
  }
}

/* ---------- Section shell ---------- */
.book-section {
  padding-block: var(--space-24);
}
.book-section--offset {
  background: var(--color-surface-offset);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
}
.book-section__head {
  max-width: 44rem;
  margin-bottom: var(--space-12);
}
.book-section__head.center {
  margin-inline: auto;
  text-align: center;
}
.book-section h2 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  margin-top: var(--space-3);
}
.book-section .eyebrow {
  color: var(--color-primary);
}

/* ---------- Synopsis / two column with image ---------- */
.synopsis-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}
.synopsis-grid img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}
.synopsis-copy p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  max-width: 58ch;
}
.synopsis-copy p:last-child {
  margin-bottom: 0;
}

@media (max-width: 860px) {
  .synopsis-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- Feature cards (themes/cycles) ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: transform var(--transition-interactive), border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
.feature-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}
.feature-card__index {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}
.feature-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-base);
  margin-bottom: var(--space-3);
  font-weight: 600;
}
.feature-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

@media (max-width: 900px) {
  .feature-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 600px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- Excerpt / pull quote ---------- */
.excerpt-block {
  border-left: 3px solid var(--color-primary);
  padding-left: var(--space-8);
  margin-block: var(--space-8);
}
.excerpt-block p {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-style: italic;
  color: var(--color-text);
  line-height: 1.5;
}
.excerpt-block cite {
  display: block;
  margin-top: var(--space-4);
  font-style: normal;
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}

/* ---------- Purchase / retailer cards ---------- */
.retailer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}
.retailer-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-8);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: transform var(--transition-interactive), border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
.retailer-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}
.retailer-card__name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-text);
}
.retailer-card__format {
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}
.retailer-card__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  margin-top: auto;
}
.retailer-card__cta svg {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-interactive);
}
.retailer-card:hover .retailer-card__cta svg {
  transform: translate(2px, -2px);
}

@media (max-width: 780px) {
  .retailer-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- Editions strip ---------- */
.editions-strip {
  display: flex;
  gap: var(--space-8);
  flex-wrap: wrap;
  padding: var(--space-6) 0;
  border-top: 1px solid var(--color-divider);
  margin-top: var(--space-10);
}
.editions-strip div strong {
  display: block;
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: 2px;
}
.editions-strip div span {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ---------- Cross-link band (to the other book) ---------- */
.crosslink-band {
  padding-block: var(--space-16);
  text-align: center;
}
.crosslink-band p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
}

/* Single-retailer variant (e.g. hardcover-only titles) */
.retailer-grid--single {
  grid-template-columns: minmax(0, 320px);
  justify-content: center;
}

/* ---------- Purchase layout: cover image + retailer details ---------- */
.purchase-layout {
  display: grid;
  grid-template-columns: minmax(200px, 300px) 1fr;
  gap: var(--space-16);
  align-items: start;
}
.purchase-cover img {
  width: 100%;
  display: block;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-divider);
}
.purchase-details .book-section__head {
  margin-bottom: var(--space-8);
}
.purchase-details .retailer-grid--single {
  justify-content: start;
}

@media (max-width: 860px) {
  .purchase-layout {
    grid-template-columns: 1fr;
  }
  .purchase-cover {
    max-width: 240px;
    margin-inline: auto;
  }
  .purchase-details .book-section__head {
    text-align: center;
    margin-inline: auto;
  }
  .purchase-details .retailer-grid--single {
    justify-content: center;
  }
}