/* メインコンテンツ */
main {
    padding-top: 240px;
}

.form-container {
    //max-width: 1080px;
    margin: 0 auto;
    padding: 60px;
    background-color: #f8f8f8;
    //margin-top: 240px;
}

.form-container form {
    max-width: 540px;
    margin: 0 auto;
}

h2 {
    text-align: center;
    font-size: 30px;
    font-weight: 400;
    margin-bottom: 30px;
}

.form-description {
    text-align: center;
    font-size: 16px;
    font-weight: 350;
    margin-bottom: 40px;
    color: #333;
    max-width: 540px;
    margin: 0 auto 40px;
}

/* フォーム要素 */
.form-group {
    margin-bottom: 30px;
}

label {
    display: block;
    font-size: 16px;
    margin-bottom: 10px;
}

input[type="text"],
input[type="email"],
textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #999;
    border-radius: 4px;
    font-size: 16px;
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 350;
}

textarea {
    resize: vertical;
    min-height: 200px;
}

.error-message {
    color: #AA1313;
    font-size: 14px;
    margin-top: 5px;
    display: none;
}

/* 送信ボタン */
.submit-button {
    display: block;
    width: 360px;
    margin: 0 auto;
    padding: 12px;
    background-color: #59B494;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.3s;
}

.submit-button:hover {
    opacity: 0.8;
}

/* 完了メッセージ */
.success-message {
    text-align: center;
    color: #59B494;
    font-size: 16px;
    font-weight: 500;
    line-height: 1.6;
    max-width: 540px;
    margin: 30px auto;
}


/* レスポンシブデザイン */
@media (max-width: 768px) {

    .form-container {
        padding: 40px 20px;
    }

    .submit-button {
        //width: 360px;
        width: 100%;
    }
}

@media (max-width: 480px) {
    h2 {
        font-size: 24px;
    }

    .form-description {
        font-size: 14px;
    }
}