* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* body {
  font-size: 100%;
  font-family: "Noto Sans JP", sans-serif;
  font-optical-sizing: auto;
  font-weight: 300;
  font-style: normal;
  background-image: url("img/company.png"); 
  background-size: cover; 
  background-position: center; 
  background-attachment: fixed; 
  padding: 50px;
} */
body {
  font-size: 100%;
  font-family: "Noto Sans JP", sans-serif;
  font-optical-sizing: auto;
  font-weight: 300;
  font-style: normal;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  padding: 50px;
  position: relative;
}

body::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-image: url("img/HP-back.jpg");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  opacity: 0.6; /* ここで透明度を設定 */
  z-index: -1; /* テキストなどを前面に表示するために z-index を使う */
}

.contact-form-container {
  max-width: 800px;
  height: auto;
  margin: 0 auto;
  padding: 40px;
  background-color: rgba(255, 255, 255, 0.8); /* 半透明の白色背景を追加 */
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h2 {
  text-align: center;
  margin-bottom: 20px;
  font-size: 24px;
  color: #333;
}

#form-group-submit {
  margin: 15px auto;
  width: 80px;
  text-align: center; /* ボタンを中央寄せ */
}
.form-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
  color: #333;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 5px;
  font-size: 16px;
  color: #333;
}
.form-group select {
  width: 100%;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 5px;
  font-size: 16px;
  color: #333;
}

/* 特定のブラウザでスタイリングが効かない場合、selectの高さを明示的に設定 */
.form-group select {
  height: 45px;
}
.form-group textarea {
  height: 150px;
  resize: none;
}

.form-group span {
  color: red;
}

button[type="submit"] {
  width: 100%;
  padding: 10px;
  background-color: #80a189;
  color: #fff;
  font-size: 18px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

button[type="submit"]:hover {
  background-color: #218838;
}
#error-message,
#error-message-email,
#error-message-phone,
#error-message-question,
#error-menu-question {
  color: red;
  font-size: 14px;
  text-align: center;
}
#success-message {
  font-size: 0.9rem;
  font-weight: 600;
  display: none;
  opacity: 0;
  color: rgb(80, 82, 80);
  text-align: center;
  margin-top: 19px;
  transition: opacity 1s ease-in-out;
}
@media (min-width: 344px) and (max-width: 480px) {
  #success-message {
    font-size: 0.7rem;
  }
}