/* LIGHTBOX */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

    .lightbox.hidden {
        display: none;
    }

.lightbox-image {
    max-width: 90vw;
    max-height: 90vh;
    border-radius: 4px;
}

/* Zavírací tlačítko */
.lightbox-close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 2rem;
    background: transparent;
    border: none;
    color: #fff;
    cursor: pointer;
}

/* Šipky */
.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 2.5rem;
    background: rgba(0,0,0,0.4);
    border: none;
    color: #fff;
    padding: 0.3rem 0.7rem;
    cursor: pointer;
}

    .lightbox-nav.prev {
        left: 20px;
    }

    .lightbox-nav.next {
        right: 20px;
    }