/* preview for big picture */

.imageBlock {
    display: none; 
    visibility: hidden;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #2c3e50;
    z-index: 1000;
    cursor: default;


    display: flex;
    justify-content: center; 
    align-items: center;  
    padding: 40px 10px;
    box-sizing: border-box; 
}

#imageBlockImage {

    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    cursor: grab; 
    transform-origin: 50% 50%; 
    will-change: transform;
    touch-action: none;   
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

#imageBlockImage.dragging {
    cursor: grabbing;
}

.close-zoom-top, .close-zoom-bottom {
    position: absolute;
    left: 0;
    width: 100%;
    background-color: rgba(0,0,0,0.5);
    color: white;
    text-align: center;
    padding: 10px 0;
    cursor: pointer;
    z-index: 1001;
    -webkit-user-select: none; 
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

.close-zoom-top {
    top: 0;
}

.close-zoom-bottom {
    bottom: 0;
}