.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lightbox.active {
    display: flex;
    opacity: 1;
}

.lightbox-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-image {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 4px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.lightbox-close {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease;
    z-index: 10000;
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.lightbox-close svg {
    width: 24px;
    height: 24px;
    stroke: #fff;
    stroke-width: 2;
}

.lightbox-nav {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    gap: 10px;
    z-index: 10000;
}

.lightbox-nav button {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease;
}

.lightbox-nav button:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.2);
}

.lightbox-nav button:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.lightbox-nav svg {
    width: 20px;
    height: 20px;
    stroke: #fff;
    stroke-width: 2;
    fill: none;
}

.lightbox-counter {
    position: fixed;
    bottom: 20px;
    left: 20px;
    color: #fff;
    font-size: 16px;
    font-weight: 500;
    background: rgba(0, 0, 0, 0.5);
    padding: 8px 16px;
    border-radius: 4px;
    z-index: 10000;
}

.gallery-mosaic-item {
    cursor: pointer;
    transition: opacity 0.2s ease;
}

.gallery-mosaic-item:hover {
    opacity: 0.9;
}

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

    .lightbox-nav {
        bottom: 10px;
        right: 10px;
    }

    .lightbox-nav button {
        width: 36px;
        height: 36px;
    }

    .lightbox-counter {
        bottom: 10px;
        left: 10px;
        font-size: 14px;
        padding: 6px 12px;
    }
}