/* ============================================
   Book page — hero, cover, and checkout styling.
   Linked only from index.html (the book page, which is the site's
   landing page).
   ============================================ */

.hero--book {
  background:
    url("../images/book/hero-bg.jpg") center/cover no-repeat,
    linear-gradient(135deg, #1e2a38, #3a4a5c);
  min-height: min(60vh, 480px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
  position: relative;
  padding: 20px;
}

.hero--book::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
}

.hero--book__content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.hero--book__content h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  margin: 0 0 12px;
}

.hero--book__content p {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  margin: 0;
}

.book-detail {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 60px 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

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

.book-cover {
  background:
    url("../images/book/cover.jpg") center/cover no-repeat,
    linear-gradient(160deg, #cfc7b3, #efe9db);
  aspect-ratio: 2 / 3;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.book-info h1 {
  margin-top: 0;
}

.book-info .byline {
  color: var(--color-text-light);
  margin-top: -8px;
  margin-bottom: 20px;
}

.checkout {
  background: #fff;
  border-top: 1px solid var(--color-border);
  padding: 60px 20px;
  text-align: center;
}

.checkout h2 {
  margin-top: 0;
}

.checkout__buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin: 24px 0;
}

@media (max-width: 480px) {
  .checkout__buttons {
    flex-direction: column;
    align-items: stretch;
  }
}

.checkout__note {
  color: var(--color-text-light);
  font-size: 0.9rem;
  max-width: 480px;
  margin: 0 auto;
}