.rts-lightbox-overlay {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	background: rgba(0, 0, 0, 0.85);
	display: flex;
	align-items: center;
	justify-content: center;
	z-index: 100000;
	opacity: 0;
	visibility: hidden;
	transition: opacity 0.2s ease;
}

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

body.rts-lightbox-locked {
	overflow: hidden;
}

.rts-lightbox-stage {
	max-width: 90vw;
	max-height: 85vh;
	text-align: center;
}

.rts-lightbox-img {
	display: block;
	max-width: 90vw;
	max-height: 80vh;
	margin: 0 auto;
	border-radius: 4px;
	box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.rts-lightbox-caption {
	color: #fff;
	font-size: 14px;
	margin-top: 10px;
	max-width: 90vw;
}

.rts-lightbox-close,
.rts-lightbox-prev,
.rts-lightbox-next {
	position: fixed;
	background: rgba(255, 255, 255, 0.1);
	border: none;
	color: #fff;
	cursor: pointer;
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
}

.rts-lightbox-close {
	top: 20px;
	right: 20px;
	width: 40px;
	height: 40px;
	font-size: 26px;
	line-height: 1;
}

.rts-lightbox-prev,
.rts-lightbox-next {
	top: 50%;
	transform: translateY(-50%);
	width: 48px;
	height: 48px;
	font-size: 18px;
}

.rts-lightbox-prev {
	left: 20px;
}

.rts-lightbox-next {
	right: 20px;
}

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

@media (max-width: 600px) {
	.rts-lightbox-prev,
	.rts-lightbox-next {
		width: 36px;
		height: 36px;
		font-size: 14px;
	}
	.rts-lightbox-prev { left: 8px; }
	.rts-lightbox-next { right: 8px; }
	.rts-lightbox-close { top: 10px; right: 10px; width: 32px; height: 32px; font-size: 20px; }
}