/* ===========================================================
   Responsive Category Gallery — frontend
   All colours/sizes are CSS variables so a theme can override
   them with .rcg { --rcg-accent: ... }
   =========================================================== */

.rcg {
	--rcg-cols: 3;
	--rcg-cols-md: 3;
	--rcg-cols-sm: 2;
	--rcg-gap: 18px;
	--rcg-radius: 10px;

	--rcg-ink: #14161a;
	--rcg-ink-soft: #6b7280;
	--rcg-line: rgba(20, 22, 26, 0.12);
	--rcg-accent: currentColor;
	--rcg-tile-bg: rgba(20, 22, 26, 0.04);
	--rcg-shadow: 0 10px 30px -18px rgba(16, 18, 22, 0.55);
	--rcg-ease: cubic-bezier(0.22, 0.61, 0.36, 1);

	color: var(--rcg-ink);
	position: relative;
	margin: 0 0 2rem;
	container-type: inline-size;
}

.rcg *,
.rcg *::before,
.rcg *::after {
	box-sizing: border-box;
}

/* -----------------------------------------------------------
   Header tabs
   ----------------------------------------------------------- */

.rcg-head {
	margin-bottom: calc(var(--rcg-gap) + 4px);
	border-bottom: 1px solid var(--rcg-line);
}

.rcg--tabs-pill .rcg-head,
.rcg--tabs-minimal .rcg-head {
	border-bottom: 0;
}

.rcg-tabs {
	position: relative;
	display: flex;
	flex-wrap: nowrap;
	gap: 0.35rem 1.6rem;
	overflow-x: auto;
	overflow-y: hidden;
	scrollbar-width: none;
	-webkit-overflow-scrolling: touch;
	/* No scroll-snap here: proximity snapping fights both the user's swipe
	   and the programmatic scroll on tab change, which reads as "springing
	   back" on touch devices. */
	overscroll-behavior-x: contain;
	touch-action: pan-x;
	scroll-behavior: smooth;
	scroll-padding-inline: 16px;
	padding-bottom: 0.7rem;
	transform: translateZ(0);
	backface-visibility: hidden;
	will-change: scroll-position;
}

.rcg-tabs::-webkit-scrollbar {
	display: none;
}

.rcg--align-center .rcg-tabs {
	justify-content: center;
}

.rcg--align-right .rcg-tabs {
	justify-content: flex-end;
}

.rcg-tab {
	position: relative;
	flex: 0 0 auto;
	display: inline-flex;
	touch-action: manipulation;
	user-select: none;
	align-items: baseline;
	gap: 0.4em;
	margin: 0;
	padding: 0;
	border: 0;
	background: none;
	font: inherit;
	font-size: 0.94em;
	font-weight: 500;
	letter-spacing: 0.01em;
	line-height: 1.2;
	color: var(--rcg-ink-soft);
	cursor: pointer;
	transition: color 0.25s var(--rcg-ease), opacity 0.25s var(--rcg-ease);
	-webkit-tap-highlight-color: transparent;
}

.rcg-tab:hover,
.rcg-tab:focus-visible {
	color: var(--rcg-ink);
}

.rcg-tab.is-active {
	color: var(--rcg-ink);
	font-weight: 650;
}

.rcg-tab-count {
	font-size: 0.72em;
	font-weight: 500;
	font-variant-numeric: tabular-nums;
	color: var(--rcg-ink-soft);
	opacity: 0.75;
}

/* sliding indicator — position is set by JS via --rcg-ind-x / --rcg-ind-w */
.rcg--tabs-underline .rcg-tabs::after {
	content: "";
	position: absolute;
	left: 0;
	bottom: 0;
	height: 2px;
	width: var(--rcg-ind-w, 0px);
	transform: translateX(var(--rcg-ind-x, 0px));
	background: var(--rcg-accent);
	border-radius: 2px;
	transition: transform 0.32s var(--rcg-ease), width 0.32s var(--rcg-ease);
	will-change: transform, width;
	pointer-events: none;
}

/* pill variant */
.rcg--tabs-pill .rcg-tabs {
	gap: 0.5rem;
	padding-bottom: 0.2rem;
}

.rcg--tabs-pill .rcg-tab {
	padding: 0.5em 1.05em;
	border: 1px solid var(--rcg-line);
	border-radius: 999px;
	transition: background 0.25s var(--rcg-ease), color 0.25s var(--rcg-ease), border-color 0.25s var(--rcg-ease);
}

.rcg--tabs-pill .rcg-tab.is-active {
	background: var(--rcg-ink);
	border-color: var(--rcg-ink);
	color: #fff;
}

.rcg--tabs-pill .rcg-tab.is-active .rcg-tab-count {
	color: inherit;
}

/* minimal variant */
.rcg--tabs-minimal .rcg-tab {
	text-transform: uppercase;
	font-size: 0.76em;
	letter-spacing: 0.12em;
	opacity: 0.55;
}

.rcg--tabs-minimal .rcg-tab.is-active {
	opacity: 1;
}

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

.rcg-grid {
	display: grid;
	grid-template-columns: repeat(var(--rcg-cols), minmax(0, 1fr));
	gap: var(--rcg-gap);
}

.rcg--masonry .rcg-grid {
	display: block;
	column-count: var(--rcg-cols);
	column-gap: var(--rcg-gap);
}

.rcg--masonry .rcg-cell {
	break-inside: avoid;
	margin: 0 0 var(--rcg-gap);
}

.rcg-cell {
	position: relative;
	margin: 0;
	min-width: 0;
	animation: rcg-in 0.45s var(--rcg-ease) both;
}

.rcg-cell.is-hidden,
.rcg-cell.is-paged {
	display: none;
}

@keyframes rcg-in {
	from {
		opacity: 0;
		transform: translateY(10px) scale(0.985);
	}
	to {
		opacity: 1;
		transform: none;
	}
}

.rcg-link {
	position: relative;
	display: block;
	overflow: hidden;
	border-radius: var(--rcg-radius);
	background: var(--rcg-tile-bg);
	box-shadow: none;
	text-decoration: none;
	transition: box-shadow 0.4s var(--rcg-ease), transform 0.4s var(--rcg-ease);
}

.rcg-link:hover,
.rcg-link:focus-visible {
	box-shadow: var(--rcg-shadow);
}

.rcg-link:focus-visible {
	outline: 2px solid var(--rcg-accent);
	outline-offset: 3px;
}

.rcg-img {
	display: block;
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform 0.6s var(--rcg-ease), filter 0.4s var(--rcg-ease);
}

.rcg-link:hover .rcg-img {
	transform: scale(1.045);
}

/* fixed ratios (grid layout only) */
.rcg--ratio-1-1:not(.rcg--masonry) .rcg-link {
	aspect-ratio: 1 / 1;
}

.rcg--ratio-4-3:not(.rcg--masonry) .rcg-link {
	aspect-ratio: 4 / 3;
}

.rcg--ratio-3-4:not(.rcg--masonry) .rcg-link {
	aspect-ratio: 3 / 4;
}

.rcg--ratio-16-9:not(.rcg--masonry) .rcg-link {
	aspect-ratio: 16 / 9;
}

.rcg--ratio-auto .rcg-img,
.rcg--masonry .rcg-img {
	height: auto;
}

.rcg-overlay {
	position: absolute;
	inset: 0;
	background: linear-gradient(to top, rgba(10, 12, 16, 0.55), rgba(10, 12, 16, 0) 55%);
	opacity: 0;
	transition: opacity 0.35s var(--rcg-ease);
}

.rcg--has-captions .rcg-link:hover .rcg-overlay,
.rcg--has-captions .rcg-link:focus-visible .rcg-overlay {
	opacity: 1;
}

.rcg-caption {
	position: absolute;
	left: 0;
	right: 0;
	bottom: 0;
	padding: 0.9em 1em;
	margin: 0;
	font-size: 0.86em;
	line-height: 1.35;
	color: #fff;
	opacity: 0;
	transform: translateY(8px);
	transition: opacity 0.35s var(--rcg-ease), transform 0.35s var(--rcg-ease);
	pointer-events: none;
}

.rcg-cell:hover .rcg-caption,
.rcg-cell:focus-within .rcg-caption {
	opacity: 1;
	transform: none;
}

.rcg-none {
	margin: 2rem 0;
	text-align: center;
	color: var(--rcg-ink-soft);
	font-size: 0.95em;
}

/* -----------------------------------------------------------
   Pagination
   ----------------------------------------------------------- */

.rcg-pagination {
	display: flex;
	align-items: center;
	justify-content: center;
	flex-wrap: wrap;
	gap: 6px;
	margin-top: calc(var(--rcg-gap) + 12px);
}

.rcg--align-left .rcg-pagination {
	justify-content: center;
}

.rcg-page {
	display: inline-grid;
	place-items: center;
	min-width: 38px;
	height: 38px;
	padding: 0 0.6em;
	margin: 0;
	border: 1px solid var(--rcg-line);
	border-radius: 8px;
	background: none;
	font: inherit;
	font-size: 0.88em;
	font-variant-numeric: tabular-nums;
	line-height: 1;
	color: var(--rcg-ink-soft);
	cursor: pointer;
	transition: background 0.25s var(--rcg-ease), color 0.25s var(--rcg-ease),
		border-color 0.25s var(--rcg-ease), transform 0.2s var(--rcg-ease);
	-webkit-tap-highlight-color: transparent;
}

.rcg-page:hover:not(:disabled):not(.is-current) {
	color: var(--rcg-ink);
	border-color: var(--rcg-ink);
	transform: translateY(-1px);
}

.rcg-page:focus-visible {
	outline: 2px solid var(--rcg-accent);
	outline-offset: 2px;
}

.rcg-page.is-current {
	background: var(--rcg-ink);
	border-color: var(--rcg-ink);
	color: #fff;
	font-weight: 600;
	cursor: default;
}

.rcg-page:disabled {
	opacity: 0.35;
	cursor: not-allowed;
}

.rcg-page-arrow {
	font-size: 1.1em;
	padding: 0;
}

.rcg-page-gap {
	padding: 0 2px;
	color: var(--rcg-ink-soft);
	letter-spacing: 0.05em;
	user-select: none;
}

.rcg-pagination[hidden],
.rcg-more[hidden] {
	display: none;
}

/* Load more */

.rcg-more {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 0.55rem;
	margin-top: calc(var(--rcg-gap) + 14px);
}

.rcg-more-btn {
	padding: 0.72em 2.1em;
	border: 1px solid var(--rcg-ink);
	border-radius: 999px;
	background: none;
	font: inherit;
	font-size: 0.9em;
	font-weight: 600;
	letter-spacing: 0.04em;
	color: var(--rcg-ink);
	cursor: pointer;
	transition: background 0.3s var(--rcg-ease), color 0.3s var(--rcg-ease);
}

.rcg-more-btn:hover,
.rcg-more-btn:focus-visible {
	background: var(--rcg-ink);
	color: #fff;
}

.rcg-more-btn[hidden] {
	display: none;
}

.rcg-more-count {
	font-size: 0.78em;
	letter-spacing: 0.1em;
	text-transform: uppercase;
	color: var(--rcg-ink-soft);
	font-variant-numeric: tabular-nums;
}

@media (prefers-color-scheme: dark) {
	.rcg:not(.rcg--force-light) .rcg-page.is-current,
	.rcg:not(.rcg--force-light) .rcg-more-btn:hover {
		background: #f2f3f5;
		border-color: #f2f3f5;
		color: #14161a;
	}
}

.rcg-notice {
	padding: 0.9em 1.1em;
	border-left: 3px solid #d63638;
	background: rgba(214, 54, 56, 0.06);
	font-size: 0.9em;
}

/* -----------------------------------------------------------
   Responsive — container queries with media-query fallback
   ----------------------------------------------------------- */

@media (max-width: 1024px) {
	.rcg-grid {
		grid-template-columns: repeat(var(--rcg-cols-md), minmax(0, 1fr));
	}

	.rcg--masonry .rcg-grid {
		column-count: var(--rcg-cols-md);
	}
}

@media (max-width: 782px) {
	.rcg-grid {
		grid-template-columns: repeat(var(--rcg-cols-sm), minmax(0, 1fr));
	}

	.rcg--masonry .rcg-grid {
		column-count: var(--rcg-cols-sm);
	}

	.rcg-tabs {
		gap: 0.35rem 1.15rem;
	}

	.rcg--align-center .rcg-tabs,
	.rcg--align-right .rcg-tabs {
		justify-content: flex-start;
	}

	.rcg-caption {
		opacity: 1;
		transform: none;
	}

	.rcg--has-captions .rcg-overlay {
		opacity: 1;
	}

	/* Fade the strip edges so it reads as scrollable. */
	.rcg-tabs {
		-webkit-mask-image: linear-gradient(to right, transparent 0, #000 14px, #000 calc(100% - 22px), transparent 100%);
		mask-image: linear-gradient(to right, transparent 0, #000 14px, #000 calc(100% - 22px), transparent 100%);
	}

	/* Backdrop blur is expensive on mobile GPUs. */
	.rcg-lb {
		backdrop-filter: none;
		background: rgba(8, 9, 12, 0.97);
	}
}

/* Sticky :hover after a tap is a touch-device artefact. */
@media (hover: none) {
	.rcg-link:hover .rcg-img {
		transform: none;
	}

	.rcg-link:hover {
		box-shadow: none;
	}

	.rcg-page:hover:not(:disabled):not(.is-current) {
		transform: none;
	}
}

@media (max-width: 480px) {
	.rcg {
		--rcg-gap: 12px;
	}

	.rcg-grid {
		grid-template-columns: 1fr;
	}

	.rcg--masonry .rcg-grid {
		column-count: 1;
	}
}

@container (max-width: 700px) {
	.rcg-grid {
		grid-template-columns: repeat(var(--rcg-cols-sm), minmax(0, 1fr));
	}
}

@container (max-width: 420px) {
	.rcg-grid {
		grid-template-columns: 1fr;
	}
}

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

.rcg-lb {
	position: fixed;
	inset: 0;
	z-index: 99999;
	display: flex;
	align-items: center;
	justify-content: center;
	padding: clamp(12px, 4vw, 48px);
	background: rgba(8, 9, 12, 0.94);
	backdrop-filter: blur(6px);
	opacity: 0;
	visibility: hidden;
	transition: opacity 0.3s ease, visibility 0.3s ease;
}

.rcg-lb.is-open {
	opacity: 1;
	visibility: visible;
}

.rcg-lb-figure {
	margin: 0;
	max-width: 100%;
	max-height: 100%;
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 0.9rem;
}

.rcg-lb-img {
	max-width: 100%;
	max-height: 82vh;
	width: auto;
	height: auto;
	border-radius: 6px;
	box-shadow: 0 40px 80px -40px rgba(0, 0, 0, 0.9);
	animation: rcg-lb-in 0.35s cubic-bezier(0.22, 0.61, 0.36, 1) both;
}

@keyframes rcg-lb-in {
	from {
		opacity: 0;
		transform: scale(0.96);
	}
	to {
		opacity: 1;
		transform: none;
	}
}

.rcg-lb-cap {
	max-width: 60ch;
	text-align: center;
	color: rgba(255, 255, 255, 0.82);
	font-size: 0.92rem;
	line-height: 1.5;
}

.rcg-lb-btn {
	position: absolute;
	display: grid;
	place-items: center;
	width: 46px;
	height: 46px;
	border: 1px solid rgba(255, 255, 255, 0.22);
	border-radius: 50%;
	background: rgba(255, 255, 255, 0.06);
	color: #fff;
	font-size: 18px;
	line-height: 1;
	cursor: pointer;
	transition: background 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
}

.rcg-lb-btn:hover,
.rcg-lb-btn:focus-visible {
	background: rgba(255, 255, 255, 0.16);
	border-color: rgba(255, 255, 255, 0.45);
	transform: scale(1.06);
}

.rcg-lb-close {
	top: clamp(10px, 2.4vw, 26px);
	right: clamp(10px, 2.4vw, 26px);
}

.rcg-lb-prev {
	left: clamp(8px, 2vw, 26px);
	top: 50%;
	margin-top: -23px;
}

.rcg-lb-next {
	right: clamp(8px, 2vw, 26px);
	top: 50%;
	margin-top: -23px;
}

.rcg-lb-counter {
	position: absolute;
	left: 50%;
	transform: translateX(-50%);
	bottom: clamp(10px, 2.4vw, 24px);
	color: rgba(255, 255, 255, 0.6);
	font-size: 0.8rem;
	letter-spacing: 0.16em;
	font-variant-numeric: tabular-nums;
}

body.rcg-lb-open {
	overflow: hidden;
}

/* -----------------------------------------------------------
   Dark themes & reduced motion
   ----------------------------------------------------------- */

@media (prefers-color-scheme: dark) {
	.rcg:not(.rcg--force-light) {
		--rcg-ink: #f2f3f5;
		--rcg-ink-soft: #9aa1ab;
		--rcg-line: rgba(255, 255, 255, 0.16);
		--rcg-tile-bg: rgba(255, 255, 255, 0.06);
	}

	.rcg--tabs-pill .rcg-tab.is-active {
		background: #f2f3f5;
		border-color: #f2f3f5;
		color: #14161a;
	}
}

@media (prefers-reduced-motion: reduce) {
	.rcg *,
	.rcg-lb * {
		animation-duration: 0.001s !important;
		transition-duration: 0.001s !important;
	}
}