body.light{
    background:#f1f5f9;
    color:#0f172a;
}

body.light .card,
body.light .question-card,
body.light .question-box{
    background:white;
}

body.light input,
body.light select{
    background:#e2e8f0;
    color:black;
}

.theme-btn{

    position:fixed;

    top:15px;
    left:15px;

    width:50px;
    height:50px;

    border:none;

    border-radius:50%;

    background:#2563eb;

    color:white;

    font-size:20px;

    cursor:pointer;

    z-index:9999;

    box-shadow:
        0 10px 30px rgba(37,99,235,0.4);
}

body.light .theme-btn{

    background:#0f172a;
}