#bb-doc-preview-modal {
    display:none;
    position:fixed;
    top:0;
    left:0;
    width:100%;
    height:100%;
    z-index:99999;
}

#bb-doc-preview-overlay {
    position:absolute;
    top:0;
    left:0;
    width:100%;
    height:100%;
    background:rgba(0,0,0,0.6);
}

#bb-doc-preview-content {
    position:fixed;
    top:50%;
    left:50%;
    transform:translate(-50%, -50%);
    width:80%;
    max-width:1000px;
    height:80%;
    background:#fff;
    padding:20px;
    overflow:auto;
    z-index:100000;
    box-shadow:0 0 20px rgba(0,0,0,0.5);
}

#bb-doc-preview-close {
    position:absolute;
    top:10px;
    right:10px;
    z-index:100001;
    padding:5px 10px;
    cursor:pointer;
}