/* ---------------------------------------------------------------
 * Gallery lightbox overlay
 * --------------------------------------------------------------- */

.kg-lightbox {
	position: fixed;
	inset: 0;
	z-index: 1000;
	display: flex;
	align-items: center;
	justify-content: center;
	background: rgba(0, 0, 0, 0.85);
	animation: kg-lightbox-fade-in 0.2s ease;
}

.kg-lightbox[hidden] {
	display: none;
}

@keyframes kg-lightbox-fade-in {
	from {
		opacity: 0;
	}
	to {
		opacity: 1;
	}
}

.kg-lightbox__stage {
	display: flex;
	flex-direction: column;
	align-items: center;
	max-width: 90vw;
	max-height: 90vh;
	animation: kg-lightbox-scale-in 0.2s ease;
}

@keyframes kg-lightbox-scale-in {
	from {
		transform: scale(0.96);
		opacity: 0;
	}
	to {
		transform: scale(1);
		opacity: 1;
	}
}

.kg-lightbox__img {
	display: block;
	max-width: 90vw;
	max-height: 80vh;
	width: auto;
	height: auto;
	object-fit: contain;
	border-radius: var(--kg-radius);
	box-shadow: var(--kg-shadow-lg);
}

.kg-lightbox__caption {
	margin-top: 12px;
	color: var(--kg-inverse-on-surface);
	font-family: var(--kg-font-body);
	font-size: var(--kg-body-md-size);
	text-align: center;
	max-width: 90vw;
}

.kg-lightbox__caption:empty {
	display: none;
}

.kg-lightbox__close,
.kg-lightbox__nav {
	position: fixed;
	display: flex;
	align-items: center;
	justify-content: center;
	background: var(--kg-surface-container-lowest);
	color: var(--kg-on-surface);
	border: none;
	border-radius: var(--kg-radius-full);
	box-shadow: var(--kg-shadow-md);
	cursor: pointer;
	transition: opacity 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.kg-lightbox__close:hover,
.kg-lightbox__nav:hover {
	box-shadow: var(--kg-shadow-lg);
	transform: translateY(-1px);
}

.kg-lightbox__close {
	top: 24px;
	right: 24px;
	width: 44px;
	height: 44px;
	font-size: 24px;
	line-height: 1;
}

.kg-lightbox__nav {
	top: 50%;
	transform: translateY(-50%);
	width: 48px;
	height: 48px;
	font-size: 28px;
	line-height: 1;
}

.kg-lightbox__nav:hover {
	transform: translateY(-50%) translateY(-1px);
}

.kg-lightbox__nav--prev {
	left: 24px;
}

.kg-lightbox__nav--next {
	right: 24px;
}

.kg-lightbox__nav:disabled {
	opacity: 0.35;
	cursor: not-allowed;
	box-shadow: none;
	transform: translateY(-50%);
}

@media (max-width: 640px) {
	.kg-lightbox__close {
		top: 12px;
		right: 12px;
		width: 36px;
		height: 36px;
		font-size: 20px;
	}

	.kg-lightbox__nav {
		width: 36px;
		height: 36px;
		font-size: 22px;
	}

	.kg-lightbox__nav--prev {
		left: 8px;
	}

	.kg-lightbox__nav--next {
		right: 8px;
	}

	.kg-lightbox__img {
		max-height: 70vh;
	}
}