#books-container {
    text-align: center;
    margin: 2rem 0;
    border: 1px solid #ddd;
    border-radius: 8px;
    background-color: #fafafa;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
  }

  #books-container svg {
    max-width: 100%;
    height: auto;
    cursor: grab;
  }

  #books-container svg:active {
    cursor: grabbing;
  }

  #loading {
    font-size: 1.2rem;
    color: #666;
    font-style: italic;
  }

  #book-info-panel {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 350px;
    max-height: 81vh;
    background-color: rgba(248, 249, 250, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid #e9ecef;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    padding: 1rem;
    overflow-y: auto;
    display: none;
    z-index: 10;
  }

  #close-book-panel {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    width: 24px;
    height: 24px;
    border: none;
    background-color: rgba(255, 255, 255, 0.8);
    color: #6c757d;
    border-radius: 50%;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    z-index: 11;
  }

  #close-book-panel:hover {
    background-color: rgba(255, 255, 255, 1);
    color: #495057;
    transform: scale(1.1);
  }

  #close-book-panel:active {
    transform: scale(0.95);
  }

  #book-placeholder {
    text-align: center;
    color: #6c757d;
    font-style: italic;
    font-size: 0.9rem;
    padding: 1rem;
  }

  .book-info {
    text-align: left;
  }

  .book-title {
    font-size: 1rem;
    font-weight: bold;
    color: #495057;
    line-height: 1.3;
    margin-bottom: 0.5rem;
  }

  .book-author {
    font-size: 0.9rem;
    color: #6c757d;
    margin-bottom: 0.75rem;
  }

  .book-details {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    margin-bottom: 0.75rem;
  }

  .book-detail {
    font-size: 0.8rem;
    color: #495057;
  }

  .book-actions {
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid rgba(108, 117, 125, 0.2);
  }

  .amazon-link {
    display: inline-block;
    background-color: #ff9900;
    color: white;
    padding: 0.5rem 1rem;
    text-decoration: none;
    border-radius: 4px;
    font-weight: bold;
    font-size: 0.8rem;
    transition: background-color 0.2s ease;
  }

  .amazon-link:hover {
    background-color: #e68900;
  }

  @media (max-width: 768px) {
    #books-container {
      margin: 1rem 0;
      padding: 0.5rem;
      min-height: auto;
      height: auto;
    }
    
    #books-container svg {
      max-width: 100%;
      max-height: 70vh;
      height: auto;
      width: auto;
    }
    
    #book-info-panel {
      width: 280px;
      top: 0.5rem;
      right: 0.5rem;
      padding: 0.75rem;
      max-height: 60vh;
    }
    
    .book-title {
      font-size: 0.9rem;
    }
    
    .book-author {
      font-size: 0.8rem;
    }
    
    .book-detail {
      font-size: 0.75rem;
    }
  }

  @media (max-width: 480px) {
    #books-container {
      margin: 0.5rem 0;
      padding: 0.25rem;
    }
    
    #books-container svg {
      max-height: 60vh;
    }
    
    #book-info-panel {
      width: calc(100vw - 1rem);
      left: 0.5rem;
      right: 0.5rem;
      top: 0.5rem;
      max-height: 50vh;
    }
  }

  /* Dialog styles */
  .book-dialog {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
  }

  .dialog-content {
    background-color: #fefefe;
    margin: 5% auto;
    padding: 20px;
    border: 1px solid #888;
    border-radius: 8px;
    width: 80%;
    max-width: 500px;
    position: relative;
  }

  .close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    position: absolute;
    right: 15px;
    top: 10px;
  }

  .close:hover,
  .close:focus {
    color: black;
    text-decoration: none;
  }

  .book-details {
    margin: 20px 0;
  }

  .book-details p {
    margin: 10px 0;
  }

  .dialog-actions {
    text-align: center;
    margin-top: 20px;
  }

  .amazon-link {
    display: inline-block;
    background-color: #ff9900;
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 4px;
    font-weight: bold;
  }

  .amazon-link:hover {
    background-color: #e68900;
  }

  /* Responsive design */
  @media (max-width: 600px) {
    .dialog-content {
      width: 95%;
      margin: 10% auto;
    }
  }

  /* Filter section styles */
  .filter-section {
    margin-bottom: 25px;
    padding: 15px;
    background-color: color-mix(in srgb, var(--color-global-bg) 90%, var(--color-global-text) 10%);
    border-radius: 8px;
    border: 1px solid color-mix(in srgb, var(--color-global-bg) 70%, var(--color-global-text) 30%);
  }

  /* Collapsible filter section (using details/summary) */
  details.filter-section {
    margin-bottom: 25px;
    padding: 15px;
    background-color: color-mix(in srgb, var(--color-global-bg) 90%, var(--color-global-text) 10%);
    border-radius: 8px;
    border: 1px solid color-mix(in srgb, var(--color-global-bg) 70%, var(--color-global-text) 30%);
  }

  details.filter-section summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--color-global-text);
    font-size: 1rem;
    margin-bottom: 0;
    list-style: none;
  }

  details.filter-section summary::-webkit-details-marker {
    display: none;
  }

  details.filter-section summary::before {
    content: '▶';
    display: inline-block;
    margin-right: 8px;
    transition: transform 0.2s ease;
  }

  details.filter-section[open] summary::before {
    transform: rotate(90deg);
  }

  .filter-content {
    margin-top: 15px;
  }

  .filter-section h4 {
    margin: 0 0 10px 0;
    color: var(--color-global-text);
    font-size: 1rem;
    font-weight: 600;
  }

  .filter-controls {
    margin-bottom: 15px;
  }

  .filter-btn {
    background-color: color-mix(in srgb, var(--color-global-text) 70%, var(--color-global-bg) 30%);
    color: var(--color-global-bg);
    border: none;
    padding: 4px 12px;
    margin-right: 8px;
    border-radius: 4px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: background-color 0.2s ease;
  }

  .filter-btn:hover {
    background-color: color-mix(in srgb, var(--color-global-text) 85%, var(--color-global-bg) 15%);
  }

  .filter-checkboxes {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }

  /* Year filters specific styling - vertical layout */
  #year-filters.filter-checkboxes {
    display: flex;
    flex-direction: column;
    gap: 4px;
  }

  /* Topic filters specific styling - vertical layout */
  #tag-filters.filter-checkboxes {
    display: flex;
    flex-direction: column;
    gap: 4px;
  }

  .filter-checkboxes label {
    display: flex;
    align-items: center;
    font-size: 0.9rem;
    color: var(--color-global-text);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: background-color 0.2s ease;
  }

  .filter-checkboxes label:hover {
    background-color: color-mix(in srgb, var(--color-global-bg) 85%, var(--color-global-text) 15%);
  }

  .filter-checkboxes input[type="checkbox"] {
    margin-right: 6px;
  }

  .filter-help {
    margin-top: 10px;
    font-size: 0.85rem;
    color: color-mix(in srgb, var(--color-global-text) 70%, var(--color-global-bg) 30%);
    font-style: italic;
  }

  @media (max-width: 768px) {
    .filter-section,
    details.filter-section {
      padding: 12px;
    }
    
    details.filter-section summary {
      font-size: 0.9rem;
    }
    
    .filter-checkboxes {
      gap: 4px;
    }
    
    .filter-checkboxes label {
      font-size: 0.8rem;
      padding: 3px 6px;
    }
  }

  /* Books table styles */
  #books-table-container {
    background-color: color-mix(in srgb, var(--color-global-bg) 90%, var(--color-global-text) 10%);
    border-radius: 8px;
    border: 1px solid color-mix(in srgb, var(--color-global-bg) 70%, var(--color-global-text) 30%);
    padding: 20px;
  }

  #books-table-container h3 {
    margin: 0 0 15px 0;
    color: var(--color-global-text);
    font-size: 1.2rem;
    font-weight: 600;
  }

  .table-wrapper {
    overflow-x: auto;
    border-radius: 6px;
    border: 1px solid color-mix(in srgb, var(--color-global-bg) 60%, var(--color-global-text) 40%);
    background-color: var(--color-global-bg);
  }

  #books-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    background-color: var(--color-global-bg);
  }

  #books-table th {
    background-color: color-mix(in srgb, var(--color-global-bg) 90%, var(--color-global-text) 10%);
    color: var(--color-global-text);
    font-weight: 600;
    padding: 12px 8px;
    text-align: left;
    border-bottom: 2px solid color-mix(in srgb, var(--color-global-bg) 70%, var(--color-global-text) 30%);
    white-space: nowrap;
  }

  #books-table td {
    padding: 10px 8px;
    border-bottom: 1px solid color-mix(in srgb, var(--color-global-bg) 85%, var(--color-global-text) 15%);
    vertical-align: top;
    background-color: var(--color-global-bg);
    color: var(--color-global-text);
  }

  #books-table tbody tr:hover {
    background-color: color-mix(in srgb, var(--color-global-bg) 95%, var(--color-global-text) 5%);
  }

  #books-table tbody tr:hover td {
    background-color: color-mix(in srgb, var(--color-global-bg) 95%, var(--color-global-text) 5%);
  }

  .book-title-cell {
    font-weight: 500;
    color: var(--color-global-text);
    max-width: 200px;
  }

  .book-author-cell {
    color: color-mix(in srgb, var(--color-global-text) 70%, var(--color-global-bg) 30%);
    max-width: 150px;
  }

  .book-tags-cell {
    font-size: 0.8rem;
    color: color-mix(in srgb, var(--color-global-text) 70%, var(--color-global-bg) 30%);
    max-width: 180px;
    line-height: 1.3;
  }

  .book-tags-cell .tag {
    display: inline-block;
    background-color: color-mix(in srgb, var(--color-global-bg) 90%, var(--color-global-text) 10%);
    color: var(--color-global-text);
    padding: 2px 6px;
    border-radius: 3px;
    margin: 1px 2px 1px 0;
    font-size: 0.75rem;
    border: 1px solid color-mix(in srgb, var(--color-global-bg) 80%, var(--color-global-text) 20%);
  }

  .book-number-cell {
    text-align: right;
    font-variant-numeric: tabular-nums;
    color: var(--color-global-text);
  }

  .amazon-btn {
    background-color: #ff9900;
    color: white;
    padding: 3px 6px;
    text-decoration: none;
    border-radius: 3px;
    font-size: 0.75rem;
    font-weight: 500;
    transition: background-color 0.2s ease;
    white-space: nowrap;
  }

  .amazon-btn:hover {
    background-color: #e68900;
    color: white;
  }

  .amazon-btn:disabled {
    background-color: #6c757d;
    cursor: not-allowed;
  }

  /* Pagination styles */
  #pagination-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 5px;
    flex-wrap: wrap;
  }

  .pagination-btn {
    background-color: color-mix(in srgb, var(--color-global-text) 70%, var(--color-global-bg) 30%);
    color: var(--color-global-bg);
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background-color 0.2s ease;
  }

  .pagination-btn:hover:not(:disabled) {
    background-color: color-mix(in srgb, var(--color-global-text) 85%, var(--color-global-bg) 15%);
  }

  .pagination-btn:disabled {
    background-color: color-mix(in srgb, var(--color-global-text) 40%, var(--color-global-bg) 60%);
    cursor: not-allowed;
  }

  .pagination-btn.active {
    background-color: var(--color-accent);
    color: var(--color-global-bg);
  }

  .pagination-btn.active:hover {
    background-color: color-mix(in srgb, var(--color-accent) 85%, var(--color-global-text) 15%);
  }

  /* Default: show table, hide cards */
  .table-wrapper {
    display: block;
  }
  
  #books-cards {
    display: none;
  }

  /* Mobile landscape and small tablets */
  @media (max-width: 768px) {
    #books-table-container {
      padding: 15px;
    }

    #table-controls {
      flex-direction: column;
      align-items: stretch;
      gap: 15px;
    }

    .table-sort {
      text-align: center;
    }

    .pagination-info {
      text-align: center;
    }

    #books-table {
      font-size: 0.8rem;
    }

    #books-table th,
    #books-table td {
      padding: 8px 6px;
    }

    .book-title-cell,
    .book-author-cell {
      max-width: 120px;
    }

    .book-tags-cell {
      max-width: 100px;
    }

    #pagination-controls {
      gap: 3px;
    }

    .pagination-btn {
      padding: 5px 8px;
      font-size: 0.8rem;
    }
  }

  /* Mobile portrait mode - Switch to card layout */
  @media (max-width: 480px) {
    #books-table-container {
      padding: 10px;
    }

    #table-controls {
      gap: 10px;
      flex-direction: column;
      align-items: center;
    }

    .table-sort {
      text-align: center;
      width: 100%;
    }

    .table-sort label {
      font-size: 0.8rem;
      display: block;
      margin-bottom: 5px;
      margin-right: 0;
    }

    .table-sort select {
      font-size: 0.8rem;
      padding: 8px 12px;
      width: 100%;
      max-width: 200px;
      border-radius: 6px;
    }

    .pagination-info {
      text-align: center;
      width: 100%;
    }

    /* Hide table, show cards */
    .table-wrapper {
      display: none !important;
    }

    #books-cards {
      display: block !important;
    }

    .book-card {
      background: var(--color-global-bg);
      border: 1px solid color-mix(in srgb, var(--color-global-bg) 70%, var(--color-global-text) 30%);
      border-radius: 8px;
      padding: 16px;
      margin-bottom: 16px;
      box-shadow: 0 2px 4px color-mix(in srgb, var(--color-global-text) 10%, transparent 90%);
      transition: box-shadow 0.2s ease;
    }

    .book-card:hover {
      box-shadow: 0 4px 8px color-mix(in srgb, var(--color-global-text) 15%, transparent 85%);
    }

    .book-card-header {
      margin-bottom: 10px;
    }

    .book-card-title {
      font-size: 1rem;
      font-weight: 600;
      color: var(--color-global-text);
      line-height: 1.3;
      margin-bottom: 4px;
    }

    .book-card-author {
      font-size: 0.85rem;
      color: color-mix(in srgb, var(--color-global-text) 70%, var(--color-global-bg) 30%);
      margin-bottom: 8px;
    }

    .book-card-details {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 8px;
      margin-bottom: 12px;
      padding: 8px 0;
      border-top: 1px solid color-mix(in srgb, var(--color-global-bg) 85%, var(--color-global-text) 15%);
      border-bottom: 1px solid color-mix(in srgb, var(--color-global-bg) 85%, var(--color-global-text) 15%);
    }

    .book-card-detail {
      font-size: 0.8rem;
    }

    .book-card-detail-label {
      font-weight: 600;
      color: color-mix(in srgb, var(--color-global-text) 70%, var(--color-global-bg) 30%);
    }

    .book-card-detail-value {
      color: var(--color-global-text);
    }

    .book-card-tags {
      margin-bottom: 12px;
    }

    .book-card-tags-label {
      font-size: 0.8rem;
      font-weight: 600;
      color: color-mix(in srgb, var(--color-global-text) 70%, var(--color-global-bg) 30%);
      margin-bottom: 4px;
    }

    .book-card-tags-list {
      display: flex;
      flex-wrap: wrap;
      gap: 4px;
    }

    .book-card-tag {
      background-color: color-mix(in srgb, var(--color-global-bg) 90%, var(--color-global-text) 10%);
      color: var(--color-global-text);
      padding: 2px 6px;
      border-radius: 3px;
      font-size: 0.75rem;
      border: 1px solid color-mix(in srgb, var(--color-global-bg) 80%, var(--color-global-text) 20%);
    }

    .book-card-action {
      text-align: left;
    }

    .book-card-action .amazon-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background-color: #ff9900;
      color: white;
      padding: 8px 12px;
      text-decoration: none;
      border-radius: 4px;
      font-size: 0.8rem;
      font-weight: 500;
      transition: all 0.2s ease;
      min-height: 36px; /* Better touch target but smaller */
    }

    .book-card-action .amazon-btn:hover {
      background-color: #e68900;
      color: white;
    }

    /* Keep pagination the same but make buttons more touch-friendly */
    .pagination-btn {
      padding: 8px 12px;
      font-size: 0.9rem;
      min-height: 44px;
    }
  }