body {
    font-family: sans-serif;
    margin: 0;
    padding: 0;
  }
  
  header {
    background-color: #003126;
    color: white;
    text-align: center;
    padding: 20px;
    font-size: 24px;
  }
  
  table {
    table-layout: fixed;
    width: 90%;
    margin: 30px auto;
    border-collapse: collapse;
  }
  
  th, td {
    padding: 13px 13px !important; /* ← !importantで強制適用 */
    text-align: center;
    font-size: 23px;
    font-family: "MS Gothic", sans-serif;
    vertical-align: middle;
  }
  
  
  th:nth-child(1),
  td:nth-child(1) {
    width: 20%;
  }
  
  th:nth-child(2),
  td:nth-child(2) {
    width: 15%;
  }
  
  th:nth-child(3),
  td:nth-child(3) {
    width: 35%;
  }
  
  th:nth-child(4),
  td:nth-child(4) {
  width: 45%;            /* ← 走行位置列の幅指定 */
  }
  .label-cell {
    background-color: #c6e8f9;
    font-weight: bold;
    cursor: pointer;
    user-select: none;
    font-size: 23px;  /* ← 文字サイズを調整 */
    font-family: "MS Gothic", sans-serif;  /* ← フォントを指定 */
    font-weight: bold; /* ← 文字を太字に */
  }

  .holiday-label-cell {
  background-color: #fe5656cc;
  color: #000000;
  font-weight: bold;
  cursor: pointer;
  user-select: none;
  font-size: 23px;  /* ← 文字サイズを調整 */
  font-family: "MS Gothic", sans-serif;  /* ← フォントを指定 */
  font-weight: bold; /* ← 文字を太字に */
  }

  .form-overlay {
    display: flex;
    justify-content: center;
    align-items: center;
    position: fixed;
    top: 0; left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    z-index: 10;
    padding: 20px;
    box-sizing: border-box;
  }

  .form-container {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    width: 100%;
    max-width: 500px !important;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
    text-align: center;
  }

  .form-group {
    margin-bottom: 10px;
    text-align: left;
    font-weight: bold; /* ← 文字を太字に */
  }
  
  .form-group label {
    display: block;
    margin-bottom: 5px;
    font-size: 24px;
    font-family: "MS Gothic", sans-serif;
  }
  
  input[type="text"],
  textarea {
    width: 100%;
    padding: 6px;
    box-sizing: border-box;
  }
  
  button {
    padding: 6px 12px;
    font-size: 14px;
    margin: 5px;
  }
  
  .popup-description {
  text-align: left;
  display: block;
  line-height: 1.4; /* ← これが行間。1.6〜2.0あたりが見やすい */
  white-space: pre-wrap;
  margin-bottom: 15px;
  }

  .popup-title {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 10px;

  }

  .nav-button {
  font-weight: bold;
  }
  
  .popup-description {
    margin: 10px 0;
    font-size: 16px;
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-y: auto;        /* ← ここが重要 */
    overflow-x: hidden;
    text-overflow: unset;
    max-height: 300px;
    padding: 6px;
    background: #f9f9f9;
    border: 1px solid #ccc;
    border-radius: 4px;
  }