/* 全体レイアウト */
body {
  font-family: sans-serif;
  padding: 20px;
  max-width: 960px;
  margin: auto;
  background-color: #f9f9f9;
}

h1 {
  font-size: 1.5em;
  margin-bottom: 1em;
}

.section-title {
  margin-top: 30px;
  margin-bottom: 10px;
  font-weight: bold;
  font-size: 1.2em;
}

/* テーブル表示 */
table {
  border-collapse: collapse;
  width: 100%;
  margin-bottom: 20px;
  background-color: #fff;
}

th, td {
  border: 1px solid #ccc;
  padding: 8px;
  vertical-align: top;
}

th {
  background-color: #f0f0f0;
  text-align: left;
}

input, select {
  width: 100%;
  box-sizing: border-box;
  padding: 6px;
  font-size: 1em;
}

button {
  padding: 8px 16px;
  font-size: 1em;
  margin-top: 10px;
  cursor: pointer;
}

.add-row {
  margin-top: 10px;
}
footer {
  text-align: center;
  padding: 20px 0;
  color: #666;
  font-size: 0.9em;
}
.required {
  color: red;
  font-size: 0.9em;
  margin-left: 0.25em;
}


/* レスポンシブ対応 */
@media screen and (max-width: 600px) {
  table, thead, tbody, th, td, tr {
    display: block;
    width: 98%;
  }

  thead {
    display: none;
  }

  tr {
    margin-bottom: 20px;
    border: 1px solid #ccc;
    padding: 10px;
    background-color: #fff;
  }

  td {
    border: none;
    padding: 6px 0;
  }

  td::before {
    content: attr(data-label);
    display: block;
    font-weight: bold;
    margin-bottom: 4px;
    color: #333;
  }
}