.rgm-lightbox-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 15, 12, 0.92);
    z-index: 100000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    opacity: 0;
    visibility: hidden;
    transition: opacity .25s ease;
}

.rgm-lightbox-overlay.is-open {
    opacity: 1;
    visibility: visible;
}

.rgm-lightbox-overlay img {
    max-width: 100%;
    max-height: 90vh;
    border-radius: 8px;
    box-shadow: 0 20px 60px rgba(0,0,0,.5);
}

.rgm-lightbox-close,
.rgm-lightbox-prev,
.rgm-lightbox-next {
    position: absolute;
    background: rgba(255,255,255,0.12);
    border: none;
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.rgm-lightbox-close {
    top: 20px;
    right: 20px;
    width: 42px;
    height: 42px;
    font-size: 22px;
}

.rgm-lightbox-prev,
.rgm-lightbox-next {
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    font-size: 26px;
}

.rgm-lightbox-prev { left: 16px; }
.rgm-lightbox-next { right: 16px; }

.rgm-lightbox-close:hover,
.rgm-lightbox-prev:hover,
.rgm-lightbox-next:hover {
    background: rgba(255,255,255,0.25);
}

@media (max-width: 600px) {
    .rgm-lightbox-prev, .rgm-lightbox-next { width: 40px; height: 40px; font-size: 20px; }
    .rgm-lightbox-close { width: 38px; height: 38px; font-size: 18px; }
}