/* 送信ボタンを大きく赤く目立たせる */
input[type="submit"],
button[type="submit"] {
    background-color: #e60033;
    color: #fff;
    font-size: 20px;
    font-weight: bold;
    padding: 18px 30px;
    border: none;
    border-radius: 8px;
    width: 100%;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    transition: 0.2s;
}

input[type="submit"]:hover,
button[type="submit"]:hover {
    background-color: #c4002d;
    transform: translateY(-2px);
}