.pub-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(0,0,0,.65);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    cursor: pointer;
}

.pub-img {
    max-width: min(900px, 95vw);
    max-height: 90vh;
    width: auto;
    height: auto;
    border-radius: 14px;
    box-shadow: 0 10px 30px rgba(0,0,0,.35);
    object-fit: contain;
    background: #fff;
}

.pub-overlay.is-hidden {
    display: none;
}