body {
  font-family: "Helvetica Neue", sans-serif;
  margin: 0;
  padding: 20px;
  background-color: #f0f4f8;
}

h1 {
  text-align: center;
  color: #1a73e8;
}

form {
  background-color: #fff;
  padding: 25px;
  border-radius: 12px;
  max-width: 700px;
  margin: 30px auto;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

label {
  display: block;
  margin-top: 15px;
  color: #333;
  font-weight: bold;
}

input[type="text"],
input[type="email"],
input[type="tel"],
select,
textarea {
  width: 100%;
  padding: 10px;
  margin-top: 5px;
  border-radius: 6px;
  border: 1px solid #ccc;
  font-size: 16px;
  background-color: #fafafa;
}

.date-group {
  display: flex;
  gap: 10px;
  align-items: center;
}

.date-group input[type="date"] {
  flex: 2;
}

.date-group select {
  flex: 1;
}

button,
a.button,
.box a {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 24px;
  background-color: #1a73e8;
  color: white;
  font-size: 16px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.3s;
}

button:hover,
a.button:hover,
.box a:hover {
  background-color: #155ab6;
}

input[type="file"] {
  background-color: #fff;
}

fieldset {
  margin-top: 15px;
  border: 1px solid #ccc;
  border-radius: 8px;
  padding: 10px 15px;
  background-color: #fdfdfd;
}

legend {
  font-weight: bold;
  color: #333;
}

ul {
  list-style: none;
  padding-left: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
}

ul li {
  margin: 3px 10px 3px 0;
  padding: 4px 8px;
  background-color: #eef3f7;
  border-radius: 6px;
  border: 1px solid #ccc;
  transition: background-color 0.3s;
}

ul li.checked {
  background-color: #cce4ff;
}

fieldset label,
fieldset input[type="checkbox"] {
  display: inline-block;
  margin-right: 15px;
  margin-bottom: 8px;
  white-space: nowrap;
}

fieldset input[type="checkbox"] {
  margin-left: 10px;
}

.container,
.box {
  max-width: 800px;
  margin: auto;
  background: #fff;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  text-align: center;
}

pre {
  background-color: #f9f9f9;
  padding: 15px;
  border: 1px solid #ddd;
  border-radius: 5px;
  overflow-x: auto;
  text-align: left;
  font-size: 18px;
  line-height: 1.6;
}

/* 共通レイアウト */
body {
  font-family: "Helvetica Neue", sans-serif;
  background-color: #f9f9f9;
  margin: 0;
  padding: 0;
}

/* 完了メッセージボックス */
.box {
  max-width: 600px;
  margin: 60px auto;
  padding: 30px;
  border: 1px solid #ccc;
  border-radius: 12px;
  background: #ffffff;
  text-align: center;
}

/* ボタンデザイン */
.button {
  display: inline-block;
  padding: 12px 24px;
  background-color: #007BFF;
  color: white;
  text-decoration: none;
  border-radius: 8px;
  margin-top: 20px;
  font-size: 16px;
}

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