/* =========================================
   BOOK PAGE STYLES
========================================= */

/* --- Nav --- */
.book-nav {
  background: var(--warm-white);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}
.book-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.book-nav__logo {
  font-family: var(--font-title);
  font-size: 20px;
  color: var(--dark);
  text-decoration: none;
  font-weight: 300;
}
.book-nav__back {
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--gold);
  text-decoration: none;
  transition: var(--transition);
}
.book-nav__back:hover {
  color: var(--gold-light);
}

/* --- Hero --- */
.book-hero {
  padding: 80px 0 60px;
  background: var(--warm-white);
}
.book-hero__inner {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 64px;
  align-items: start;
}
.book-hero__cover {
  position: sticky;
  top: 32px;
}
.book-hero__cover img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  filter: drop-shadow(-8px 8px 32px rgba(0,0,0,0.15));
}
.book-hero__title {
  font-family: var(--font-title);
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 300;
  line-height: 1.2;
  color: var(--dark);
  margin-bottom: 20px;
}
.book-hero__desc {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.8;
  color: var(--mid);
  margin-bottom: 24px;
}
.book-hero__subdesc {
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--dark-mid);
  margin-bottom: 16px;
}

/* --- Purchase links --- */
.book-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.book-link {
  display: flex;
  align-items: center;
  padding: 14px 24px;
  background: linear-gradient(135deg, #8B2252, #C4387A);
  color: #fff;
  border-radius: var(--radius);
  text-decoration: none;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
}
.book-link:hover {
  opacity: 0.9;
  transform: translateX(4px);
}
.book-link__name {
  flex: 1;
}
.book-link__sub {
  font-size: 12px;
  font-weight: 400;
  opacity: 0.75;
  margin-left: 8px;
}
.book-link__arrow {
  font-size: 24px;
  line-height: 1;
  opacity: 0.7;
}

/* --- Benefits --- */
.book-benefits {
  padding: 80px 0;
  background: var(--light-bg);
}
.book-benefits .container {
  max-width: 800px;
}
.book-benefits__lead {
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.8;
  color: var(--dark);
  margin-bottom: 28px;
  text-align: center;
}
.book-benefits__list {
  list-style: none;
  padding: 0;
  margin: 0 0 32px;
}
.book-benefits__list li {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--dark-mid);
  padding: 10px 0 10px 28px;
  position: relative;
}
.book-benefits__list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--gold);
  font-weight: 600;
}
.book-benefits__bonus {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  color: var(--mid);
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

/* --- Book Preview Carousel --- */
.book-preview {
  padding: 60px 0 80px;
  background: var(--warm-white);
}
.book-carousel {
  display: flex;
  align-items: center;
  gap: 16px;
}
.book-carousel__track-wrapper {
  flex: 1;
  overflow: hidden;
  border-radius: var(--radius-lg);
}
.book-carousel__track {
  display: flex;
  transition: transform 0.5s ease;
}
.book-carousel__slide {
  min-width: 100%;
  padding: 0 8px;
  box-sizing: border-box;
}
.book-slide-placeholder {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, #f0e6d2, #e8d8c0);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  position: relative;
  border: 1px solid var(--border);
}
.book-slide-placeholder span {
  font-family: var(--font-serif);
  font-size: 20px;
  font-style: italic;
  color: var(--dark-mid);
  text-align: center;
  max-width: 500px;
  line-height: 1.5;
}
.book-carousel__btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--light-bg);
  border: 1px solid var(--border);
  color: var(--dark);
  font-size: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  flex-shrink: 0;
}
.book-carousel__btn:hover {
  background: var(--gold);
  border-color: var(--gold);
  color: #fff;
}
.book-carousel__dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
}
.book-carousel__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
  border: none;
  cursor: pointer;
  transition: var(--transition);
}
.book-carousel__dot.active {
  background: var(--gold);
  transform: scale(1.2);
}

/* --- Author --- */
.book-author {
  padding: 100px 0;
  background: var(--light-bg);
}
.book-author__inner {
  display: grid;
  grid-template-columns: 400px 1fr;
  gap: 64px;
  align-items: start;
}
.book-author__img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  border-radius: var(--radius-lg);
}
.book-author__content .section-title {
  margin-bottom: 20px;
}
.book-author__content p {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  color: var(--mid);
  margin-bottom: 12px;
}
.book-author__quote {
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.book-author__quote p {
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.8;
  color: var(--dark-mid);
  font-style: italic;
  margin-bottom: 16px;
}
.book-author__quote p:first-child {
  font-style: normal;
  font-family: var(--font-sans);
  font-weight: 500;
  color: var(--dark);
}

/* --- Reviews --- */
.book-reviews {
  padding: 100px 0;
  background: var(--warm-white);
}
.book-reviews__title {
  font-family: var(--font-title);
  font-size: clamp(28px, 3.5vw, 42px);
  font-weight: 300;
  text-align: center;
  color: var(--dark);
  margin-bottom: 48px;
}
.book-reviews__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.book-review-card {
  background: var(--light-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
}
.book-review-card__text {
  font-family: var(--font-serif);
  font-size: 15px;
  font-style: italic;
  line-height: 1.7;
  color: var(--dark-mid);
  margin-bottom: 12px;
}
.book-review-card__text:last-of-type {
  margin-bottom: 20px;
}
.book-review-card__author {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--mid);
  border-top: 1px solid var(--border);
  padding-top: 12px;
}
.book-review-card__author strong {
  display: block;
  color: var(--dark);
  font-weight: 600;
  margin-bottom: 2px;
}

/* --- Bottom Video --- */
.book-bottom {
  padding: 0 0 80px;
  background: var(--warm-white);
}
.book-bottom__video {
  width: 300px;
  aspect-ratio: 9/16;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.book-bottom__video iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* =========================================
   RESPONSIVE
========================================= */
@media (max-width: 1024px) {
  .book-hero__inner {
    grid-template-columns: 280px 1fr;
    gap: 40px;
  }
  .book-author__inner {
    grid-template-columns: 300px 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .book-hero {
    padding: 48px 0 40px;
  }
  .book-hero__inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .book-hero__cover {
    position: static;
    max-width: 260px;
    margin: 0 auto;
  }
  .book-hero__title {
    text-align: center;
  }
  .book-hero__desc,
  .book-hero__subdesc {
    text-align: center;
  }
  .book-author__inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .book-author__photo-placeholder {
    max-width: 320px;
    margin: 0 auto;
  }
  .book-reviews__grid {
    grid-template-columns: 1fr;
  }
  .book-slide-placeholder span {
    font-size: 16px;
    padding: 20px;
  }
}

@media (max-width: 480px) {
  .book-link {
    padding: 12px 16px;
    font-size: 14px;
  }
  .book-carousel__btn {
    width: 36px;
    height: 36px;
    font-size: 22px;
  }
}