/* 全体のスタイル */
body {
    font-family: 'Roboto', sans-serif;
    background-color: #f4f5f7;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

/* ログインボックス */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
}

.login-box {
    background-color: #ffffff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0px 6px 15px rgba(0, 0, 0, 0.1);
    text-align: center;
    width: 350px;
}

/* タイトル */
.login-title {
    font-size: 26px;
    margin-bottom: 20px;
    color: #2c3e50;
    font-weight: bold;
}

/* ラジオボタン */
.radio-group {
    margin: 20px 0;
    text-align: left;
}

.radio-group p {
    font-size: 16px;
    margin-bottom: 10px;
    color: #555;
}

.radio-group label {
    display: flex;
    align-items: center;
    font-size: 16px;
    color: #333;
    margin-bottom: 15px;
    cursor: pointer;
    position: relative;
}

.radio-group input[type="radio"] {
    display: none;
}

.radio-group .custom-radio {
    width: 18px;
    height: 18px;
    border: 2px solid #007bff;
    border-radius: 50%;
    margin-right: 10px;
    display: inline-block;
    position: relative;
    background-color: #fff;
    transition: background-color 0.3s, border-color 0.3s;
}

.radio-group input[type="radio"]:checked + .custom-radio {
    background-color: #007bff;
    border-color: #007bff;
}

.radio-group input[type="radio"]:checked + .custom-radio::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    background-color: #fff;
    border-radius: 50%;
}

/* ボタン */
.login-button, .register-button {
    display: block;
    width: 100%;
    padding: 12px 0;
    font-size: 16px;
    border-radius: 5px;
    font-weight: bold;
    cursor: pointer;
    margin-top: 10px;
    transition: all 0.3s;
    text-align: center;
    text-decoration: none;
}

.login-button {
    background-color: #007bff;
    color: #ffffff;
    border: none;
}

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

.register-button {
    background-color: #28a745;
    color: #ffffff;
    border: none;
}

.register-button:hover {
    background-color: #218838;
}