/* ============================================================
   TUTUR BANGSA — book.css
   Archive Hero · Featured · Grid · Single · Buy Card
   ============================================================ */

/* ── ARCHIVE HERO ─────────────────────────────────────────── */
.book-archive-hero {
  background: var(--color-dark);
  padding: var(--space-16) 0;
  overflow: hidden;
  position: relative;
}

.book-archive-hero__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-10);
  position: relative;
  z-index: 1;
}

.book-archive-hero__content { max-width: 560px; }

.book-archive-hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: var(--space-5) 0 var(--space-4);
}

.book-archive-hero__title em {
  font-style: italic;
  color: rgba(255,255,255,0.5);
}

.book-archive-hero__sub {
  font-size: var(--text-lg);
  color: rgba(255,255,255,0.4);
  line-height: var(--leading-relaxed);
}

/* Stacked covers */
.book-archive-hero__covers {
  display: flex;
  align-items: flex-end;
  position: relative;
  width: 280px;
  height: 320px;
  flex-shrink: 0;
}

.book-archive-hero__cover-item {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) rotate(var(--rot, 0deg));
  width: 140px;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  transition: transform var(--transition);
}

.book-archive-hero__cover-item:nth-child(1) { left: 25%; z-index: 1; }
.book-archive-hero__cover-item:nth-child(2) { left: 50%; z-index: 3; }
.book-archive-hero__cover-item:nth-child(3) { left: 75%; z-index: 2; }

.book-archive-hero__cover-item img { display: block; width: 100%; }

.book-cover-placeholder {
  height: 210px;
  background: var(--color-gray-700);
  border-radius: var(--radius-md);
}

/* ── FEATURED BOOK ────────────────────────────────────────── */
.book-featured {
  padding: var(--space-16) 0;
  background: var(--color-white);
  border-bottom: var(--border-light);
}

.book-featured__inner {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-12);
  align-items: center;
}

.book-featured__cover {
  position: relative;
  display: block;
}

.book-featured__cover a { display: block; }

.book-featured__cover img {
  width: 100%;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  display: block;
  transition: transform var(--transition);
}

.book-featured__cover a:hover img { transform: scale(1.02); }

.book-featured__cover-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 300px;
  background: var(--color-gray-100);
  border-radius: var(--radius-md);
  font-size: 4rem;
  color: var(--color-gray-300);
}

.book-featured__genre {
  display: block;
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-gray-400);
  margin: var(--space-4) 0 var(--space-3);
}

.book-featured__title {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--color-dark);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-3);
}

.book-featured__title a { transition: color var(--transition-fast); }
.book-featured__title a:hover { color: var(--color-black); }

.book-featured__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
}

.book-featured__meta-sep { opacity: 0.4; }

.book-featured__desc {
  font-size: var(--text-base);
  color: var(--color-gray-500);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-8);
  max-width: 560px;
}

.book-featured__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

/* ── ARCHIVE SECTION ──────────────────────────────────────── */
.book-archive-section {
  padding: var(--space-14) 0 var(--space-20);
  background: var(--color-gray-50);
}

/* ── BOOK GRID ────────────────────────────────────────────── */
.book-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-6) var(--space-5);
  margin-bottom: var(--space-10);
}

/* ── BOOK CARD ────────────────────────────────────────────── */
.book-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.book-card__cover-wrap {
  position: relative;
  display: block;
}

.book-card__cover-link {
  display: block;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 4px 8px 20px rgba(0,0,0,0.12);
  transition: all var(--transition);
}

.book-card__cover-link:hover {
  box-shadow: 8px 16px 32px rgba(0,0,0,0.2);
  transform: translateY(-4px) rotate(-0.5deg);
}

.book-card__cover-link img {
  display: block;
  width: 100%;
  aspect-ratio: 2/3;
  object-fit: cover;
}

.book-card__cover-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 2/3;
  background: var(--color-gray-100);
  border-radius: var(--radius-md);
  font-size: 2.5rem;
  color: var(--color-gray-300);
}

.book-card__badge {
  position: absolute;
  top: var(--space-2);
  left: var(--space-2);
  background: var(--color-dark);
  color: var(--color-white);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 7px;
  border-radius: var(--radius-full);
}

.book-card__info {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.book-card__genre {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--color-gray-400);
}

.book-card__title {
  font-family: var(--font-serif);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-dark);
  line-height: var(--leading-snug);
}

.book-card__title a { transition: color var(--transition-fast); }
.book-card__title a:hover { color: var(--color-black); }

.book-card__author { font-size: var(--text-xs); color: var(--color-gray-400); }

.book-card__price {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-dark);
  margin-top: var(--space-1);
}

/* ── SINGLE BOOK HERO ─────────────────────────────────────── */
.book-hero {
  background: var(--color-dark);
  padding: var(--space-16) 0 var(--space-20);
  position: relative;
  overflow: hidden;
}

.book-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(-45deg, transparent, transparent 40px, rgba(255,255,255,0.012) 40px, rgba(255,255,255,0.012) 41px);
}

.book-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-14);
  align-items: flex-start;
}

.book-hero__cover-wrap { position: relative; flex-shrink: 0; }

.book-hero__cover {
  width: 220px;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 16px 32px 64px rgba(0,0,0,0.5);
}

.book-hero__cover img { display: block; width: 100%; }

.book-hero__cover--empty {
  height: 310px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  font-size: 4rem;
}

.book-hero__badge {
  position: absolute;
  top: -10px;
  right: -10px;
  background: var(--color-white);
  color: var(--color-dark);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow);
  white-space: nowrap;
}

.book-hero__eyebrow {
  display: block;
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.35);
  margin-bottom: var(--space-3);
}

.book-hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin-bottom: var(--space-5);
}

.book-hero__author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-7);
}

.book-hero__author-link {
  font-size: var(--text-sm);
  font-weight: 700;
  color: rgba(255,255,255,0.6);
  transition: color var(--transition-fast);
}

.book-hero__author-link:hover { color: var(--color-white); }

/* Meta grid */
.book-hero__meta-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  padding: var(--space-6);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-8);
}

.book-hero__meta-item { display: flex; flex-direction: column; gap: var(--space-1); }

.book-hero__meta-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.25);
}

.book-hero__meta-val {
  font-size: var(--text-sm);
  font-weight: 500;
  color: rgba(255,255,255,0.6);
}

/* Buy section */
.book-hero__buy-section {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.book-hero__price-wrap {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
}

.book-hero__price {
  font-family: var(--font-serif);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-white);
}

.book-hero__price-original {
  font-size: var(--text-base);
  color: rgba(255,255,255,0.3);
  text-decoration: line-through;
}

.book-hero__buy-btns {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

/* ── DETAIL LAYOUT ────────────────────────────────────────── */
.book-detail-wrap {
  padding: var(--space-16) 0 var(--space-20);
  background: var(--color-white);
}

.book-detail__inner {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--space-12);
  align-items: start;
}

.book-detail-section {
  margin-bottom: var(--space-10);
  padding-bottom: var(--space-10);
  border-bottom: var(--border-light);
}

.book-detail-section:last-child { border-bottom: none; }

.book-detail-section__title {
  font-family: var(--font-serif);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: var(--space-6);
}

.book-detail-section__body {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--color-ink);
}

.book-detail-section__body p { margin-bottom: 1.25em; }

/* Preview box */
.book-preview-box {
  position: relative;
  border: var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  background: var(--color-gray-50);
  overflow: hidden;
}

.book-preview-box__label {
  display: inline-flex;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-gray-400);
  margin-bottom: var(--space-5);
  border-bottom: 2px solid var(--color-gray-200);
  padding-bottom: var(--space-3);
}

.book-preview-box__content {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--color-ink);
  max-height: 300px;
  overflow: hidden;
}

.book-preview-box__fade {
  position: absolute;
  bottom: 60px;
  left: 0;
  right: 0;
  height: 100px;
  background: linear-gradient(to bottom, transparent, var(--color-gray-50));
}

.book-preview-box__cta {
  display: block;
  text-align: center;
  margin-top: var(--space-5);
  position: relative;
  z-index: 1;
}

/* Info table */
.book-info-table { width: 100%; border-collapse: collapse; }

.book-info-table__row {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  border-bottom: var(--border-light);
  align-items: baseline;
}

.book-info-table__row:last-child { border-bottom: none; }

.book-info-table__key {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-gray-400);
}

.book-info-table__val {
  font-size: var(--text-sm);
  color: var(--color-dark);
  font-weight: 500;
}

/* Author card */
.book-author-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-6);
  padding: var(--space-6);
  background: var(--color-gray-50);
  border-radius: var(--radius-lg);
  border: var(--border-light);
}

.book-author-card__name {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: var(--space-2);
}

.book-author-card__name a { transition: color var(--transition-fast); }
.book-author-card__name a:hover { color: var(--color-black); }

.book-author-card__bio {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}

/* ── SIDEBAR ──────────────────────────────────────────────── */
.book-detail__sidebar .book-buy-card {
  position: sticky;
  top: calc(var(--header-height) + var(--space-5));
  margin-bottom: var(--space-5);
}

.book-buy-card__cover {
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  overflow: hidden;
}

.book-buy-card__cover img {
  display: block;
  width: 100%;
  max-height: 200px;
  object-fit: cover;
}

.book-buy-card__body {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.book-buy-card__price {
  font-family: var(--font-serif);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-dark);
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
}

.book-buy-card__price-orig {
  font-size: var(--text-base);
  color: var(--color-gray-400);
  text-decoration: line-through;
  font-weight: 500;
}

.book-buy-card__stores {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.book-buy-card__store {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  height: 38px;
  padding: 0 var(--space-4);
  border: var(--border-light);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-gray-600);
  transition: all var(--transition-fast);
}

.book-buy-card__store:hover {
  border-color: var(--color-gray-400);
  color: var(--color-dark);
}

/* Sidebar list */
.book-sidebar-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.book-sidebar-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: var(--border-light);
  transition: opacity var(--transition-fast);
}

.book-sidebar-item:last-child { border-bottom: none; }
.book-sidebar-item:hover { opacity: 0.7; }

.book-sidebar-item__cover {
  width: 40px;
  height: 56px;
  border-radius: var(--radius);
  overflow: hidden;
  flex-shrink: 0;
  background: var(--color-gray-100);
}

.book-sidebar-item__cover img { width: 100%; height: 100%; object-fit: cover; }

.book-sidebar-item__cover-empty {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.book-sidebar-item__info { flex: 1; min-width: 0; }

.book-sidebar-item__title {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-dark);
  line-height: var(--leading-snug);
  margin-bottom: 2px;
}

.book-sidebar-item__price {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-gray-400);
}

/* Share */
.book-share-btns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2);
}

.book-share-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  height: 36px;
  border: var(--border-light);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-gray-600);
  background: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.book-share-btn:hover {
  border-color: var(--color-gray-400);
  color: var(--color-dark);
}

.book-share-btn:last-child { grid-column: 1 / -1; }

/* ── RELATED ARTICLES ─────────────────────────────────────── */
.book-related-section {
  padding: var(--space-14) 0;
  background: var(--color-gray-50);
  border-top: var(--border-light);
}

.book-related-section__title {
  font-family: var(--font-serif);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: var(--space-8);
}

/* ── RESPONSIVE ───────────────────────────────────────────── */
@media (max-width: 1280px) {
  .book-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 1024px) {
  .book-hero__inner,
  .book-detail__inner,
  .book-featured__inner { grid-template-columns: 1fr; }

  .book-hero__cover-wrap { display: none; }

  .book-detail__sidebar .book-buy-card { position: static; }

  .book-hero__meta-grid { grid-template-columns: repeat(2, 1fr); }

  .book-grid { grid-template-columns: repeat(3, 1fr); }

  .book-archive-hero__covers { display: none; }
}

@media (max-width: 768px) {
  .book-grid  { grid-template-columns: repeat(2, 1fr); }
  .book-author-card { flex-direction: column; }
  .book-hero__buy-section { flex-direction: column; align-items: flex-start; }
  .book-info-table__row { grid-template-columns: 120px 1fr; }
}

@media (max-width: 480px) {
  .book-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-4) var(--space-3); }
  .book-share-btns { grid-template-columns: 1fr; }
  .book-share-btn:last-child { grid-column: auto; }
}