/* =====================================
   BOOKS LIST PAGE
   หน้ารายการหนังสือแบบกริด
   ===================================== */
/* Page Container */
.books-list-page {
  min-height: 100vh;
  background: var(--color-background, #F5F3F0);
}
/* Page Header */
.page-header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 3rem 0 2rem;
  margin-bottom: 2rem;
}
.page-header .btn-back {
  color: white;
  opacity: 0.9;
}
.page-header .btn-back:hover {
  opacity: 1;
}
.page-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
  color: white;
}
.page-subtitle {
  font-size: 1.125rem;
  margin: 0;
  opacity: 0.95;
}
.filters-wrapper {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.filter-categories {
  list-style-type: none;
  padding: 0;
}
/* Search Box */
.filter-search {
  display: flex;
  gap: 1rem;
  max-width: 600px;
}
.filter-search .form-control {
  flex: 1;
}
.filter-search .search-input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.5rem;
  border: 2px solid var(--color-border, #E0DDD9);
  border-radius: var(--border-radius, 8px);
  font-size: 1rem;
  transition: border-color 0.3s ease;
}
.filter-search .search-input:focus {
  outline: none;
  border-color: var(--color-primary, #8B7355);
}
.filter-search .btn {
  padding: 0.75rem 2rem;
  white-space: nowrap;
}
/* Filter Options */
.filter-options {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: center;
}
.filter-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.filter-label {
  font-weight: 600;
  color: var(--color-text-secondary, #736B5E);
  font-size: 0.95rem;
  white-space: nowrap;
}
.filter-select {
  padding: 0.5rem 2rem 0.5rem 0.75rem;
  border: 2px solid var(--color-border, #E0DDD9);
  border-radius: var(--border-radius, 8px);
  background: white;
  font-size: 0.95rem;
  color: var(--color-text, #2C2825);
  cursor: pointer;
  transition: border-color 0.3s ease;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23736B5E' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.5rem center;
  min-width: 150px;
}
.filter-select:focus {
  outline: none;
  border-color: var(--color-primary, #8B7355);
}
.filter-select:hover {
  border-color: var(--color-primary, #8B7355);
}
/* Results Info */
.results-info {
  margin-bottom: 1.5rem;
}
.results-count {
  font-size: 1rem;
  color: var(--color-text-secondary, #736B5E);
  font-weight: 500;
}
/* Books Grid */
.books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}
/* Loading State */
.api-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 400px;
  gap: 1rem;
}
.loading-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--color-border, #E0DDD9);
  border-top-color: var(--color-primary, #8B7355);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
/* Book Card Enhancements for Grid */
.books-grid .book-card {
  height: 100%;
}
.books-grid .book-card-image {
  position: relative;
}
/* Book Meta in Grid */
.books-grid .book-meta {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.875rem;
  color: var(--color-text-secondary, #736B5E);
  margin-bottom: 0.75rem;
}
.books-grid .book-meta span {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.books-grid .book-meta span::before {
  font-size: 0.875em;
  opacity: 0.7;
}
/* Empty State */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 400px;
  padding: 3rem;
  text-align: center;
  background: var(--color-surface-bg, #FFFFFF);
  border-radius: var(--border-radius, 8px);
  margin-bottom: 3rem;
}
.empty-icon {
  font-size: 4rem;
  color: var(--color-border, #E0DDD9);
  margin-bottom: 1.5rem;
}
.empty-icon::before {
  font-size: inherit;
}
.empty-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text, #2C2825);
  margin-bottom: 0.5rem;
}
.empty-message {
  font-size: 1rem;
  color: var(--color-text-secondary, #736B5E);
  margin-bottom: 2rem;
}
/* Pagination */
.pagination-wrapper {
  display: flex;
  justify-content: center;
  padding: 2rem 0 4rem;
}
.pagination {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.pagination > * {
  min-width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: white;
  color: var(--color-text, #2C2825);
  font-size: 0.95rem;
  font-weight: 600;
  transition: all 0.3s ease;
}
.pagination .current,
.pagination > a {
  border: 2px solid var(--color-border, #E0DDD9);
  border-radius: var(--border-radius, 8px);
  cursor: pointer;
}
.pagination :hover:not(.current):not(.active) {
  border-color: var(--color-primary, #8B7355);
  color: var(--color-primary, #8B7355);
  background: var(--color-background, #F5F3F0);
}
.pagination .current {
  background: var(--color-primary, #8B7355);
  border-color: var(--color-primary, #8B7355);
  color: white;
}
.pagination .current {
  opacity: 0.4;
  cursor: not-allowed;
}
/* Responsive Design */
@media (max-width: 1200px) {
  .books-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
  }
}
@media (max-width: 768px) {
  .page-header {
    padding: 2rem 0 1.5rem;
  }
  .page-title {
    font-size: 1.75rem;
  }
  .page-subtitle {
    font-size: 1rem;
  }
  .filter-search {
    max-width: 100%;
  }
  .filter-search .btn {
    padding: 0.75rem 1rem;
  }
  .filter-options {
    gap: 1rem;
  }
  .filter-item {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
  }
  .filter-select {
    width: 100%;
  }
  .books-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 1rem;
  }
  .pagination {
    padding: 0.75rem;
    gap: 0.25rem;
  }
  .pagination-btn {
    min-width: 36px;
    height: 36px;
    font-size: 0.875rem;
  }
  .pagination-ellipsis {
    min-width: 36px;
    height: 36px;
  }
}
@media (max-width: 480px) {
  .page-title {
    font-size: 1.5rem;
  }
  .page-subtitle {
    font-size: 0.875rem;
  }
  .filter-search {
    flex-direction: column;
  }
  .filter-search .btn {
    width: 100%;
  }
  .books-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
  }
  .books-grid .book-title {
    font-size: 0.875rem;
  }
  .books-grid .book-meta {
    font-size: 0.75rem;
  }
  .books-grid .book-price {
    font-size: 1rem;
  }
  .pagination {
    width: 100%;
    justify-content: space-between;
    overflow-x: auto;
  }
  .pagination-btn {
    min-width: 32px;
    height: 32px;
    font-size: 0.8rem;
  }
  .empty-state {
    padding: 2rem 1rem;
    min-height: 300px;
  }
  .empty-icon {
    font-size: 3rem;
  }
  .empty-title {
    font-size: 1.25rem;
  }
  .empty-message {
    font-size: 0.875rem;
  }
}
/* Grid Variants */
@media (min-width: 1400px) {
  .books-grid {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  }
}
/* Print Styles */
@media print {
  .pagination-wrapper,
  .btn-add-cart,
  .breadcrumb-nav {
    display: none !important;
  }
  .books-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
  }
  .page-header {
    background: none;
    color: black;
    padding: 1rem 0;
  }
}