/* Utah State University web brand palette */
  :root {
    --usu-aggie-blue: #0F2439;
    --usu-white: #FFFFFF;
    --usu-blue: #384660;
    --usu-blue-light: #E1EAF9;
    --usu-blue-dark: #2F3A50;
    --usu-gray: #CED4DA;
    --usu-gray-lighter: #E9ECEF;
    --usu-gray-light: #DEE2E6;
    --usu-gray-dark: #838898;
    --usu-gray-darker: #495057;
    --usu-bright-light: #4494DA;
    --usu-danger: #A6260D;
  }
  * { box-sizing: border-box; }
  body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--usu-gray-lighter);
    margin: 0;
    color: var(--usu-aggie-blue);
  }
  #app { max-width: 1100px; margin: 0 auto; }
  h1 {
    font-size: 22px;
    margin-bottom: 20px;
    color: var(--usu-aggie-blue);
    border-bottom: 3px solid var(--usu-bright-light);
    padding-bottom: 10px;
  }
  .search-bar {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
  }
  .search-bar input[type="text"] {
    flex: 1;
    padding: 10px 14px;
    font-size: 15px;
    border: 1px solid var(--usu-gray-dark);
    border-radius: 8px;
    color: var(--usu-aggie-blue);
  }
  .search-bar input[type="number"] {
    width: 90px;
    padding: 10px 10px;
    font-size: 15px;
    border: 1px solid var(--usu-gray-dark);
    border-radius: 8px;
    color: var(--usu-aggie-blue);
  }
  .search-bar input:focus-visible,
  .search-bar button:focus-visible,
  th.sortable button:focus-visible,
  .pagination button:focus-visible {
    outline: 2px solid var(--usu-aggie-blue);
    outline-offset: 2px;
  }
  .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }
  .search-bar button {
    padding: 10px 20px;
    font-size: 15px;
    border: none;
    border-radius: 8px;
    background: var(--usu-aggie-blue);
    color: var(--usu-white);
    cursor: pointer;
  }
  .search-bar button:hover:not(:disabled) { background: var(--usu-blue); }
  .search-bar button:disabled { background: var(--usu-gray-dark); cursor: default; }
  .meta { font-size: 13px; color: var(--usu-gray-darker); margin-bottom: 12px; }
  table {
    width: 100%;
    border-collapse: collapse;
    background: var(--usu-white);
    border-radius: 8px;
    overflow: hidden;
    font-size: 13px;
  }
  th, td {
    text-align: left;
    padding: 8px 10px;
    border-bottom: 1px solid var(--usu-gray-light);
    vertical-align: top;
  }
  th {
    background: var(--usu-gray);
    color: var(--usu-aggie-blue);
    font-weight: 600;
    position: sticky;
    top: 0;
    white-space: nowrap;
  }
  th.sortable:hover { background: #d3e2f8; }
  .sort-arrow { font-size: 11px; margin-left: 4px; color: var(--usu-gray-darker); }
  .sort-arrow-active { color: var(--usu-aggie-blue); font-weight: 700; }
  tbody td:nth-child(even) { background: var(--usu-gray-light); }
  tr:hover td { background: var(--usu-blue-light); }
  .error { color: var(--usu-danger); margin-bottom: 12px; }
  .empty { color: var(--usu-gray-darker); padding: 20px 0; }
  .col-limit { max-width: 260px; overflow: hidden; text-overflow: ellipsis; }
  .col-wide { min-width: 259px; max-width: 389px; white-space: normal; }
  .col-book { min-width: 211px; max-width: 324px; white-space: normal; }
  .col-indexnum { min-width: 100px; max-width: 140px; white-space: normal; }
  .col-title { max-width: 160px; }
  .pagination {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 16px;
    font-size: 13px;
  }
  .pagination button {
    padding: 6px 12px;
    font-size: 13px;
    border: 1px solid var(--usu-gray-dark);
    border-radius: 6px;
    background: var(--usu-white);
    color: var(--usu-aggie-blue);
    cursor: pointer;
  }
  .pagination button:hover:not(:disabled) { background: var(--usu-blue-light); }
  .pagination button:disabled { color: var(--usu-gray-dark); cursor: default; }
  .page-info { color: var(--usu-gray-darker); }
  th.sortable button {
    background: none;
    border: none;
    padding: 0;
    margin: 0;
    font: inherit;
    font-weight: 600;
    color: inherit;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 4px;
  }