#jext-preview {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: none;
}

#jext-preview.jext-preview-show {
    display: block;
}

#jext-preview .jext-preview-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, .9);
    opacity: 0;
    transition: opacity 0.3s;
}

#jext-preview.jext-preview-show .jext-preview-bg {
    opacity: 1;
}

#jext-preview .jext-preview-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

#jext-preview .jext-preview-container {
    display: flex;
    align-items: center;
    justify-content: center;
}

#jext-preview .jext-preview-container img {
    display: block;
    max-width: 90vw;
    max-height: 90vh;
    user-select: none;
    -webkit-user-select: none;
}

#jext-preview .jext-preview-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    cursor: pointer;
    z-index: 10001;
    opacity: 0.8;
    transition: opacity 0.3s, transform 0.3s;
}

#jext-preview .jext-preview-close:hover {
    opacity: 1;
    transform: rotate(90deg);
}

#jext-preview .jext-preview-close svg {
    width: 100%;
    height: 100%;
    fill: #fff;
}

#jext-preview .jext-preview-prev,
#jext-preview .jext-preview-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 80px;
    cursor: pointer;
    z-index: 10001;
    opacity: 0.6;
    transition: opacity 0.3s, background 0.3s;
    display: none;
}

#jext-preview .jext-preview-prev {
    left: 20px;
}

#jext-preview .jext-preview-next {
    right: 20px;
}

#jext-preview .jext-preview-prev:hover,
#jext-preview .jext-preview-next:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.1);
}

#jext-preview .jext-preview-prev svg,
#jext-preview .jext-preview-next svg {
    width: 100%;
    height: 100%;
    fill: #fff;
}

#jext-preview .jext-preview-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: #fff;
    font-size: 14px;
    padding: 8px 16px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 20px;
    z-index: 10001;
    display: none;
}

#jext-preview .jext-preview-indicator.show {
    display: block;
}

@media (max-width: 768px) {
    #jext-preview .jext-preview-close {
        top: 10px;
        right: 10px;
        width: 36px;
        height: 36px;
    }

    #jext-preview .jext-preview-prev,
    #jext-preview .jext-preview-next {
        width: 40px;
        height: 60px;
    }

    #jext-preview .jext-preview-prev {
        left: 10px;
    }

    #jext-preview .jext-preview-next {
        right: 10px;
    }

    #jext-preview .jext-preview-indicator {
        bottom: 20px;
        font-size: 12px;
        padding: 6px 12px;
    }
}