.popup-image-viewer {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .9);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: 40px 20px;
}

.popup-image-viewer.is-open {
    display: flex;
}

.popup-image-viewer__content {
    position: relative;
    max-width: min(92vw, 1280px);
    max-height: 92vh;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.popup-image-viewer__img {
    max-width: 100%;
    max-height: 92vh;
    display: block;
    object-fit: contain;
    border-radius: 4px;
}

.popup-image-viewer__btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    border: 0;
    background: rgba(255, 255, 255, .22);
    color: #fff;
    font-size: 36px;
    line-height: 1;
    width: 56px;
    height: 56px;
    border-radius: 999px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.popup-image-viewer__btn:hover {
    background: rgba(255, 255, 255, .32);
}

.popup-image-viewer__btn--prev {
    left: 12px;
}

.popup-image-viewer__btn--next {
    right: 12px;
}

.popup-image-viewer__close {
    position: absolute;
    top: 10px;
    right: 10px;
    border: 0;
    background: rgba(255, 255, 255, .2);
    color: #fff;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
}

.popup-image-viewer__close:hover {
    background: rgba(255, 255, 255, .3);
}

.popup-image-viewer__counter {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    color: #fff;
    background: rgba(0, 0, 0, .45);
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 14px;
}

@media (max-width:768px) {
    .popup-image-viewer__btn {
        width: 44px;
        height: 44px;
        font-size: 28px;
    }

    .popup-image-viewer__btn--prev {
        left: 4px;
    }

    .popup-image-viewer__btn--next {
        right: 4px;
    }
}