.pdf-popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    display: none;
    z-index: 999999999; /* Ensure overlay is on top */
}

.pdf-popup-content {
    width: 1000px;
    height: 680px;
    position: relative;
    max-height: 80%;
    max-width: 90%;
}

.pdf-popup-frame-wrapper,
.pdf-popup-frame-wrapper iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.pdf-popup-close {
    position: absolute;
    right: 0;
    top: -40px;
    background: #fff;
    z-index: 10000; /* Close button is above everything */
    padding: 5px 8px;
    border-radius: 5px;
    line-height: 14px;
    cursor: pointer;
}