.lightbox {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.9);
}

.lightbox.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
}

.lightbox img {
    width: 100%;
    height: auto;
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
}

.lightbox-close {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    background: none;
    border: none;
}

.lightbox-close:hover {
    color: #bbb;
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: white;
    font-size: 30px;
    font-weight: bold;
    cursor: pointer;
    background: rgba(0,0,0,0.5);
    border: none;
    padding: 10px 15px;
    user-select: none;
}

.lightbox-prev {
    left: 20px;
}

.lightbox-next {
    right: 20px;
}

.lightbox-nav:hover {
    background: rgba(0,0,0,0.8);
}

@media (max-width: 768px) {
    .lightbox-close {
        font-size: 30px;
        top: 10px;
        right: 20px;
    }
    
    .lightbox-nav {
        font-size: 24px;
        padding: 8px 12px;
    }
    
    .lightbox-prev {
        left: 10px;
    }
    
    .lightbox-next {
        right: 10px;
    }
}