/* ===== General Page Layout ===== */
body {
    font-family: Arial, Helvetica, sans-serif;
    margin: 20px;
    background-color: #fafafa;
    color: #333;
  }

  h1 {
    color: #333;
    margin-bottom: 20px;
  }

  /* ===== Filters Section ===== */
  .filters {
    margin-bottom: 20px;
    padding: 15px;
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 5px;
  }

  .filters > div {
    display: inline-block;
    margin-right: 15px;
    margin-bottom: 10px;
  }

  .filters label {
    font-weight: bold;
    margin-right: 5px;
  }

  .filters input[type="text"],
  .filters input[type="number"],
  .filters select {
    padding: 5px;
    border: 1px solid #ccc;
    border-radius: 3px;
  }

  .filters button,
  .btn {
    padding: 6px 15px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 3px;
    cursor: pointer;
  }

  .filters button:hover,
  .btn:hover {
    background-color: #0056b3;
  }

  /* ===== Table ===== */
  .table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
    background-color: white;
  }

  .table th,
  .table td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
  }

  .table th {
    background-color: #f2f2f2;
    font-weight: bold;
    cursor: pointer;
  }

  .table th.sort-asc::after {
    content: " ▲";
    color: #007bff;
  }

  .table th.sort-desc::after {
    content: " ▼";
    color: #007bff;
  }

  .table tr:nth-child(even) {
    background-color: #f9f9f9;
  }

  .table tr:hover {
    background-color: #f1f1f1;
  }

  .table a {
    color: #007bff;
    text-decoration: none;
  }

  .table a:hover {
    text-decoration: underline;
  }

  /* ===== Old grid layout (optional, kept for reference) ===== */
  .author-header-table,
  .author-row {
    display: none; /* disabled in new version, since we use table instead */
  }

  /* ===== Modal ===== */
  .modal {
    display: none;
    position: fixed;
    z-index: 10;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.6);
    align-items: center;
    justify-content: center;
  }

  .modal-content {
    background: #fff;
    padding: 20px 30px;
    border-radius: 6px;
    max-width: 700px;
    width: 90%;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.3);
    position: relative;
    animation: fadeIn 0.3s ease;
  }

  @keyframes fadeIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
  }

  .close-btn {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 20px;
    background: none;
    border: none;
    color: #888;
    cursor: pointer;
  }

  .close-btn:hover {
    color: #000;
  }

  /* ===== Modal Books Table ===== */
  #booksTable {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
  }

  #booksTable th,
  #booksTable td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
  }

  #booksTable th {
    background-color: #f2f2f2;
    font-weight: bold;
  }

  /* ===== Sorting Indicators ===== */
  .sorted {
    color: #007bff;
  }

  .unsorted {
    color: gray;
  }