.popup-banner {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.75);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 999999;
}

.popup-content {
    position: relative;
    width: 90%;
    max-width: 650px;
    animation: popupAnimation 1.5s ease;
}

.popup-content img {
    width: 100%;
    border-radius: 15px;
    display: block;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

.close-popup {
    position: absolute;
    top: -15px;
    right: -15px;
    width: 40px;
    height: 40px;
    background: #ff0000;
    color: #fff;
    border-radius: 50%;
    text-align: center;
    line-height: 40px;
    font-size: 24px;
    font-weight: bold;
    cursor: pointer;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    transition: 0.3s;
}

.close-popup:hover {
    transform: scale(1.1);
}

@keyframes popupAnimation {
    from {
        transform: scale(0.7);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

@media (max-width: 768px) {
    .popup-content {
        width: 95%;
    }

    .close-popup {
        width: 35px;
        height: 35px;
        line-height: 35px;
        font-size: 20px;
    }
}