/* Full screen overlay */
.popup-overlay {
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
}

/* Popup window */
.popup-window {
    position: fixed;
    bottom: -500px;
    left: 50%;
    transform: translateX(-50%);
    background: #fff;
    border: 3px solid #333;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0,0,0,.5);
    padding: 10px;
    max-width: 700px;
    width: 90%;
    transition: bottom 1s ease-in-out;
}

/* Visible state */
.popup-window.show {
    bottom: 20px;
}

/* Popup image */
.popup-window img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 5px;
}