/* Lightbox and its thumbnail grid (COMPONENTS 13). The viewer is a full-screen native <dialog>; the figure
   zooms from the clicked thumbnail (--fx, --fy, --fs set by ui-lightbox.js). Motion is switched off by .rm. */

.lbx-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr));
	gap: clamp(12px, 1.6vw, 22px);
}

.lbx-th {
	position: relative;
	display: block;
	padding: 0;
	border: var(--hairline) solid var(--ln-s);
	background: var(--bg-alt);
	color: var(--fg);
	cursor: zoom-in;
	text-align: start;
	overflow: hidden;
	transition: border-color var(--d-slow) var(--ease), transform var(--d-slow) var(--ease);
}

.lbx-th img {
	display: block;
	inline-size: 100%;
	aspect-ratio: 16 / 10;
	object-fit: cover;
	object-position: top;
}

.lbx-th:hover,
.lbx-th:focus-visible {
	border-color: var(--hi);
	transform: translateY(-4px);
}

.lbx-cap {
	display: block;
	padding: var(--sp-8) var(--sp-12);
	border-block-start: var(--hairline) solid var(--ln);
	color: var(--fg2);
	font: 500 var(--fs-label) var(--font-mono);
	letter-spacing: 0.1em;
	text-transform: uppercase;
}

/* viewer */
.lbx {
	inline-size: 100%;
	max-inline-size: none;
	block-size: 100%;
	max-block-size: none;
	margin: 0;
	padding: 0;
	border: 0;
	background: none;
	color: var(--white);
	overflow: hidden;
}

.lbx[open] {
	display: grid;
	place-items: center;
}

.lbx::backdrop {
	background: rgb(var(--ink-950-rgb) / 0.88);
	backdrop-filter: blur(8px);
}

.lbx-f {
	display: grid;
	gap: var(--sp-12);
	inline-size: min(1080px, 100% - 2 * var(--margin), (100dvh - 9rem) * 1.6);
	margin: 0;
	opacity: 0;
	transform: translate(var(--fx, 0), var(--fy, 0)) scale(var(--fs, 0.4));
	transition: transform var(--d-slow) var(--ease), opacity var(--d-base) var(--ease);
}

.lbx[data-on] .lbx-f {
	opacity: 1;
	transform: none;
}

.lbx-img {
	display: block;
	inline-size: 100%;
	aspect-ratio: 16 / 10;
	object-fit: contain;
	background: var(--ink-950);
	border: var(--hairline) solid var(--ln-s);
}

.lbx-f figcaption {
	display: flex;
	justify-content: space-between;
	gap: var(--sp-16);
	color: var(--gray-300);
	font-size: var(--fs-s);
}

.lbx-count {
	flex: none;
	color: var(--gold-300);
	font-size: var(--fs-label);
	letter-spacing: 0.1em;
}

.lbx-b {
	position: absolute;
	z-index: 1;
	display: grid;
	place-items: center;
	inline-size: 52px;
	block-size: 52px;
	padding: 0;
	border: var(--hairline) solid var(--ln-s);
	background: rgb(var(--ink-900-rgb) / 0.9);
	color: var(--white);
	cursor: pointer;
	transition: background var(--d-base) var(--ease), color var(--d-base) var(--ease);
}

.lbx-b:hover {
	background: var(--gold-300);
	color: var(--ink-900);
}

.lbx-b svg {
	inline-size: 22px;
	block-size: 22px;
	fill: none;
	stroke: currentcolor;
	stroke-width: 1.5;
}

.lbx-close {
	inset-inline-end: max(12px, 2vw);
	inset-block-start: max(12px, 2vw);
}

.lbx-prev,
.lbx-next {
	inset-block-start: 50%;
	margin-block-start: -26px;
}

.lbx-prev {
	inset-inline-start: max(12px, 2vw);
}

.lbx-next {
	inset-inline-end: max(12px, 2vw);
}

/* the arrow glyph points to inline-end; Previous sits at inline-start, so it points the other way */
.lbx-prev svg {
	transform: scaleX(-1);
}

html[dir="rtl"] .lbx-prev svg {
	transform: none;
}

html[dir="rtl"] .lbx-next svg {
	transform: scaleX(-1);
}

@media (max-width: 700px) {
	.lbx-b {
		inline-size: 44px;
		block-size: 44px;
	}

	.lbx-prev,
	.lbx-next {
		inset-block: auto max(16px, 2vw);
		margin-block-start: 0;
	}

	.lbx-f {
		margin-block-end: var(--sp-48);
	}
}