/**
 * Photo gallery grid, year navigation and lightbox.
 *
 * Layers on group-pages.css; defines no design tokens of its own.
 */

/* ---------- Year navigation ---------- */

.csmb-yearnav {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 0.6rem 0.85rem;
	margin-bottom: var(--csmb-section-gap);
	padding: 0.9rem 1.1rem;
	border: 1px solid var(--csmb-line);
	border-left: 4px solid var(--csmb-accent);
	border-radius: var(--csmb-radius);
	background: var(--csmb-surface);
}

.csmb-yearnav__label {
	font-size: 0.72rem;
	font-weight: 700;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--csmb-accent-dark);
}

.csmb-yearnav__list {
	display: flex;
	flex-wrap: wrap;
	gap: 0.5rem;
	margin: 0;
	padding: 0;
	list-style: none;
}

.csmb-yearnav__link {
	display: inline-flex;
	align-items: center;
	gap: 0.45rem;
	padding: 0.32rem 0.75rem;
	border-radius: 3px;
	background: #fff;
	border: 1px solid var(--csmb-line);
	color: var(--csmb-ink);
	font-size: 0.86rem;
	font-weight: 600;
	text-decoration: none;
}

.csmb-yearnav__link:hover,
.csmb-yearnav__link:focus {
	border-color: var(--csmb-accent);
	color: var(--csmb-accent-dark);
}

.csmb-yearnav__count {
	padding: 0.05rem 0.4rem;
	border-radius: 2px;
	background: var(--csmb-accent-tint);
	color: var(--csmb-accent-dark);
	font-size: 0.74rem;
	font-weight: 700;
}

.csmb-section__count {
	margin-left: 0.7rem;
	font-size: 0.78rem;
	font-weight: 600;
	letter-spacing: 0.04em;
	text-transform: uppercase;
	color: #646464;
}

/* ---------- Grid ---------- */

.csmb-gallery {
	display: grid;
	gap: 0.85rem;
	grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
	margin: 0;
	padding: 0;
	list-style: none;
}

.csmb-gallery--teaser {
	grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
}

.csmb-gallery__item {
	margin: 0;
}

.csmb-gallery__link {
	display: block;
	position: relative;
	overflow: hidden;
	border-radius: var(--csmb-radius);
	background: var(--csmb-surface);
	/* Keeps the grid even regardless of the photo's own proportions. */
	aspect-ratio: 4 / 3;
	outline-offset: 3px;
	transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.csmb-gallery__link:hover,
.csmb-gallery__link:focus-visible {
	transform: translateY(-2px);
	box-shadow: 0 6px 18px rgba(0, 0, 0, 0.14);
}

.csmb-gallery__img {
	display: block;
	width: 100%;
	height: 100%;
	object-fit: cover;
}

/* A thin burgundy wash on hover, tying the grid to the rest of the site. */
.csmb-gallery__link::after {
	content: "";
	position: absolute;
	inset: 0;
	background: linear-gradient(180deg, rgba(139, 35, 50, 0) 55%, rgba(139, 35, 50, 0.45) 100%);
	opacity: 0;
	transition: opacity 0.15s ease;
}

.csmb-gallery__link:hover::after,
.csmb-gallery__link:focus-visible::after {
	opacity: 1;
}

/* ---------- Lightbox ---------- */

.csmb-lightbox {
	position: fixed;
	inset: 0;
	z-index: 100000;
	display: flex;
	flex-direction: column;
	background: rgba(24, 8, 12, 0.94);
	padding: clamp(0.75rem, 3vw, 2rem);
}

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

.csmb-lightbox__stage {
	flex: 1 1 auto;
	display: flex;
	align-items: center;
	justify-content: center;
	min-height: 0;
}

.csmb-lightbox__img {
	max-width: 100%;
	max-height: 100%;
	object-fit: contain;
	border-radius: 4px;
	background: #1a0b0e;
}

.csmb-lightbox__bar {
	flex: 0 0 auto;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 1rem;
	padding-top: 0.85rem;
	color: #fff;
}

.csmb-lightbox__caption {
	font-size: 0.92rem;
	line-height: 1.5;
	opacity: 0.92;
}

.csmb-lightbox__count {
	font-size: 0.8rem;
	letter-spacing: 0.06em;
	opacity: 0.75;
	white-space: nowrap;
}

.csmb-lightbox__btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 2.75rem;
	height: 2.75rem;
	padding: 0;
	border: 0;
	border-radius: 50%;
	background: rgba(255, 255, 255, 0.14);
	color: #fff;
	font-size: 1.25rem;
	line-height: 1;
	cursor: pointer;
	transition: background 0.15s ease;
}

.csmb-lightbox__btn:hover,
.csmb-lightbox__btn:focus-visible {
	background: var(--csmb-accent, #8b2332);
}

.csmb-lightbox__btn[disabled] {
	opacity: 0.35;
	cursor: default;
}

.csmb-lightbox__close {
	position: absolute;
	top: clamp(0.75rem, 3vw, 2rem);
	right: clamp(0.75rem, 3vw, 2rem);
}

.csmb-lightbox__nav {
	position: absolute;
	top: 50%;
	transform: translateY(-50%);
}

.csmb-lightbox__nav--prev {
	left: clamp(0.5rem, 2vw, 1.5rem);
}

.csmb-lightbox__nav--next {
	right: clamp(0.5rem, 2vw, 1.5rem);
}

/* Stop the page behind from scrolling while the lightbox is open. */
body.csmb-lightbox-open {
	overflow: hidden;
}

@media (prefers-reduced-motion: reduce) {
	.csmb-gallery__link,
	.csmb-gallery__link::after,
	.csmb-lightbox__btn {
		transition: none;
	}

	.csmb-gallery__link:hover,
	.csmb-gallery__link:focus-visible {
		transform: none;
	}
}

@media (max-width: 600px) {
	.csmb-gallery,
	.csmb-gallery--teaser {
		grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
		gap: 0.6rem;
	}

	.csmb-lightbox__bar {
		flex-direction: column;
		align-items: flex-start;
		gap: 0.35rem;
	}
}