.library-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
}

.library-cover img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    cursor: zoom-in;
    border-radius: 6px;
    transition: transform 0.3s ease;
}

.library-cover img:hover {
    transform: scale(1.03);
}

/* LIGHTBOX */
.lightbox {
    display: none;
    position: fixed;
    z-index: 9999;
    inset: 0;
    background: rgba(0,0,0,0.9);
    justify-content: center;
    align-items: center;
}

.lightbox-content {
    max-width: 95%;
    max-height: 95%;
    object-fit: contain;
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 30px;
    color: #fff;
    font-size: 40px;
    cursor: pointer;
}