/* === 共通スタイル === */
.exam-select-container {
    background-color: #e5f5ff;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.2);
    padding: 20px;
    border-radius: 10px;
    width: 800px;
    margin: 50px auto;
    text-align: center;
}

.exam-select-title {
    font-size: 45px;
    margin-top: 30px;
}

.exam-select-box {
    background-color: #000;
    color: #333;
    padding: 8px 12px;
    border-radius: 5px;
    font-size: 16px;
    appearance: none;
}

.exam-select-dropdown {
    padding: 10px;
    font-size: 20px;
    border-radius: 5px;
    background-color: #fff;
    border: none;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
    width: 400px;
    margin-top: 50px;
    text-align-last: center;
    appearance: none;
}

.exam-info-text {
    display: inline-block;
    background: #fff;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
    padding: 30px 100px;
    border-radius: 10px;
    margin: 60px auto;
    font-size: 25px;
}

.exam-select-button {
    color: #fff;
    background-color: #007bff;
    font-size: 25px;
    width: 250px;
    height: 50px;
    cursor: pointer;
    border: none;
    border-radius: 10px;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.2);
    transition: background-color 0.3s, transform 0.2s;
    margin: 10px auto 50px;
}

.exam-select-button:hover {
    background-color: #005bff;
    transform: scale(1.01);
}

/* === メディアクエリ === */

/* タブレット（768px〜1024px） */
@media screen and (min-width: 768px) and (max-width: 1024px) {
    .exam-select-container {
        width: 600px;
    }

    .exam-select-title {
        font-size: 40px;
        margin-top: 20px;
    }

    .exam-select-dropdown {
        margin-top: 30px;
    }

    .exam-info-text {
        margin: 40px auto;
    }

    .exam-select-button {
        margin-bottom: 40px;
    }
}

/* スマホ（480px〜767px） */
@media screen and (min-width: 480px) and (max-width: 767px) {
    .exam-select-container {
        width: 400px;
        padding: 15px;
        margin: 40px auto;
    }

    .exam-select-title {
        font-size: 28px;
        margin-top: 12px;
    }

    .exam-select-dropdown {
        padding: 8px;
        font-size: 16px;
        width: 300px;
        margin-top: 20px;
    }

    .exam-info-text {
        padding: 18px 60px;
        margin: 30px auto;
        font-size: 18px;
        border-radius: 8px;
    }

    .exam-select-button {
        font-size: 20px;
        width: 200px;
        height: 40px;
        margin: 10px auto 20px;
    }
}

/* スマホ（〜479px） */
@media screen and (max-width: 479px) {
    .exam-select-container {
        width: 250px;
        margin: 30px auto;
    }

    .exam-select-title {
        font-size: 20px;
        margin-top: 12px;
    }

    .exam-select-dropdown {
        padding: 4px;
        font-size: 10px;
        width: 175px;
        margin-top: 16px;
    }

    .exam-info-text {
        padding: 10px 30px;
        margin: 20px auto;
        font-size: 12px;
        border-radius: 5px;
    }

    .exam-select-button {
        font-size: 15px;
        width: 150px;
        height: 30px;
        margin: 10px auto 20px;
    }
}