/* =============================================
   PUBLICATIONS PAGE
   ============================================= */

/* Filter Nav */
.pub-filter-bar {
  background: var(--white);
  border-bottom: 1px solid var(--gray-light);
  position: sticky;
  top: 70px;
  z-index: 90;
  box-shadow: 0 2px 12px rgba(27,42,74,0.07);
}

.pub-filter-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 14px 0;
  flex-wrap: wrap;
}

.pub-filter-label {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--gray);
  white-space: nowrap;
}

.pub-filter-tabs {
  display: flex;
  gap: 8px;
  flex: 1;
}

.pub-filter-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-radius: 30px;
  border: 2px solid var(--gray-light);
  background: transparent;
  cursor: pointer;
  transition: all 0.25s ease;
  text-decoration: none;
}

.pub-filter-tab-label {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--gray);
  transition: color 0.25s ease;
}

.pub-filter-tab-count {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.68rem;
  font-weight: 600;
  background: var(--gray-light);
  color: var(--gray);
  padding: 2px 8px;
  border-radius: 20px;
  transition: all 0.25s ease;
}

.pub-filter-tab:hover {
  border-color: var(--gold);
}

.pub-filter-tab:hover .pub-filter-tab-label {
  color: var(--navy-dark);
}

.pub-filter-tab.active {
  background: var(--navy-dark);
  border-color: var(--navy-dark);
}

.pub-filter-tab.active .pub-filter-tab-label {
  color: var(--white);
}

.pub-filter-tab.active .pub-filter-tab-count {
  background: rgba(201,168,76,0.25);
  color: var(--gold-light);
}

.pub-filter-order {
  margin-left: auto;
  flex-shrink: 0;
}

@media (max-width: 600px) {
  .pub-filter-label { display: none; }
  .pub-filter-inner { gap: 12px; padding: 10px 0; }
  .pub-filter-order { display: none; }
  .pub-filter-tab { padding: 7px 16px; }
}

/* Promo Banner */
.promo-banner {
  background: linear-gradient(135deg, var(--navy-dark) 0%, #1e3260 100%);
  padding: 56px 0;
  border-bottom: 3px solid var(--gold);
}

.promo-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.promo-badge {
  display: inline-block;
  background: var(--gold);
  color: var(--navy-dark);
  font-family: 'Montserrat', sans-serif;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 30px;
  margin-bottom: 12px;
}

.promo-text h2 {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
  line-height: 1.1;
}

.promo-text h2 span {
  color: var(--gold);
  font-style: italic;
}

.promo-text p {
  color: rgba(255,255,255,0.7);
  font-size: 0.95rem;
  line-height: 1.75;
  max-width: 520px;
  margin-bottom: 20px;
}

.promo-locations {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.promo-location {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gold-light);
  letter-spacing: 0.5px;
}

.promo-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.promo-contact {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  font-family: 'Montserrat', sans-serif;
}

/* Section */
.pub-section {
  padding: 96px 0;
  background: var(--white);
}

.pub-section-alt {
  background: var(--off-white);
}

.pub-section-header {
  margin-bottom: 56px;
}

.pub-price-tag {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  margin-top: 20px;
  font-family: 'Montserrat', sans-serif;
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--navy-dark);
}

.pub-price-tag span {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Books Grid */
.books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

/* Book Card */
.book-card {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--gray-light);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
}

.book-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(201,168,76,0.3);
}

.book-img-wrap {
  background: linear-gradient(135deg, var(--navy-dark) 0%, #1e3260 100%);
  padding: 40px 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  min-height: 260px;
}

.book-img-wrap::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(201,168,76,0.12) 0%, transparent 70%);
}

.book-img-wrap img {
  width: 160px;
  height: auto;
  object-fit: contain;
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 12px 32px rgba(0,0,0,0.5));
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.book-card:hover .book-img-wrap img {
  transform: scale(1.06) translateY(-4px);
}

.book-info {
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.book-subject {
  display: inline-block;
  font-family: 'Montserrat', sans-serif;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 8px;
}

.book-info h3 {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--navy-dark);
  line-height: 1.3;
  margin-bottom: 10px;
}

.book-info p {
  font-size: 0.85rem;
  color: var(--gray);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 16px;
}

.book-meta {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.book-level,
.book-publisher {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
}

.book-level {
  background: rgba(27,42,74,0.08);
  color: var(--navy);
}

.book-publisher {
  background: var(--gold-pale);
  color: #8a6a1a;
}

.book-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--gray-light);
}

.book-price {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--navy-dark);
}

.btn-sm {
  padding: 9px 20px !important;
  font-size: 0.82rem !important;
}

/* Primary Book */
.primary-book-wrap {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 64px;
  align-items: center;
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--gray-light);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.primary-book-visual {
  background: linear-gradient(135deg, var(--navy-dark) 0%, #1e3260 100%);
  padding: 60px 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  min-height: 340px;
}

.primary-book-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(201,168,76,0.15) 0%, transparent 70%);
}

.primary-book-visual img {
  width: 140px;
  object-fit: contain;
  filter: drop-shadow(0 8px 32px rgba(201,168,76,0.3));
  position: relative;
  z-index: 1;
}

.primary-book-badge {
  position: absolute;
  bottom: 20px;
  right: 20px;
  background: var(--gold);
  color: var(--navy-dark);
  font-family: 'Montserrat', sans-serif;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 6px 14px;
  border-radius: 20px;
  letter-spacing: 1px;
}

.primary-book-info {
  padding: 40px 40px 40px 0;
}

.primary-book-info h3 {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--navy-dark);
  margin-bottom: 14px;
  line-height: 1.2;
}

.primary-book-info > p {
  font-size: 0.95rem;
  color: var(--gray);
  line-height: 1.8;
  margin-bottom: 24px;
}

.primary-subjects {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 24px;
  margin-bottom: 8px;
}

.primary-subjects li {
  font-size: 0.85rem;
  color: var(--text-dark);
  font-weight: 500;
  padding: 6px 0 6px 14px;
  border-left: 3px solid var(--gold);
  font-family: 'Montserrat', sans-serif;
}

/* Responsive */
@media (max-width: 900px) {
  .primary-book-wrap {
    grid-template-columns: 1fr;
  }
  .primary-book-visual { min-height: 220px; }
  .primary-book-info { padding: 32px; }
}

@media (max-width: 600px) {
  .promo-inner { flex-direction: column; }
  .promo-cta { width: 100%; align-items: flex-start; }
  .books-grid { grid-template-columns: 1fr; }
  .primary-subjects { grid-template-columns: 1fr; }
}