body{
    margin:0;
    background:#1a1a1a;
    display:flex;
    justify-content:center;
    align-items:center;
    height:100vh;
    overflow:hidden;
    font-family:Arial;
}

#flipbook{
    width:100%;
    height:650px;
    box-shadow:0 20px 60px rgba(0,0,0,.5);
}

.page{
    background:white;
    overflow:hidden;
}

canvas{
    width:100%;
    height:100%;
}

#loader{
    position:fixed;
    inset:0;
    background:#181818;
    display:flex;
    flex-direction:column;
    justify-content:center;
    align-items:center;
    z-index:9999;
    transition:opacity .5s ease;
}

#loader.hide{
    opacity:0;
    pointer-events:none;
}

.spinner{
    width:70px;
    height:70px;
    border:5px solid rgba(255,255,255,.15);
    border-top:5px solid #fff;
    border-radius:50%;
    animation:spin .8s linear infinite;
}

#loadingText{
    color:#fff;
    margin-top:20px;
    font-size:18px;
    font-family:Arial, sans-serif;
}

@keyframes spin{
    to{
        transform:rotate(360deg);
    }
}