/**
 * DernTech Gallery - frontend styles
 */

.dtg-gallery {
	--dtg-cols: 3;
	--dtg-cols-tablet: 2;
	--dtg-cols-mobile: 1;
	--dtg-gap: 16px;
	--dtg-radius: 8px;
	--dtg-row-h: 260px;
	box-sizing: border-box;
	width: 100%;
}

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

.dtg-item {
	margin: 0;
	padding: 0;
	position: relative;
}

.dtg-item__link {
	display: block;
	text-decoration: none;
	color: inherit;
	outline-offset: 3px;
}

.dtg-item__frame {
	display: block;
	position: relative;
	overflow: hidden;
	border-radius: var(--dtg-radius);
	background: #f2f2f2;
	line-height: 0;
}

.dtg-item__img {
	display: block;
	width: 100%;
	height: auto;
	transition: transform 0.45s cubic-bezier(0.2, 0.6, 0.2, 1), opacity 0.3s ease;
}

.dtg-item__caption {
	margin: 8px 2px 0;
	font-size: 0.875em;
	line-height: 1.45;
	opacity: 0.75;
}

/* ---------------------------------------------------------------
   Hover effects
   --------------------------------------------------------------- */

.dtg-hover--zoom .dtg-item:hover .dtg-item__img {
	transform: scale(1.06);
}

.dtg-hover--fade .dtg-item:hover .dtg-item__img {
	opacity: 0.75;
}

.dtg-hover--overlay .dtg-item__frame::after {
	content: "";
	position: absolute;
	inset: 0;
	background: rgba(0, 0, 0, 0.45);
	opacity: 0;
	transition: opacity 0.3s ease;
	pointer-events: none;
}

.dtg-hover--overlay .dtg-item:hover .dtg-item__frame::after {
	opacity: 1;
}

/* ---------------------------------------------------------------
   MASONRY - CSS grid with JS-calculated row spans.
   Images keep natural height. No gaps, no reflow jumps.
   --------------------------------------------------------------- */

.dtg-gallery--masonry {
	display: grid;
	grid-template-columns: repeat(var(--dtg-cols), minmax(0, 1fr));
	grid-auto-rows: 8px;
	gap: 0 var(--dtg-gap);
	align-items: start;
}

.dtg-gallery--masonry .dtg-item {
	grid-row-end: span 30; /* provisional until JS measures */
	margin-bottom: var(--dtg-gap);
}

/* Fallback when JS is unavailable: CSS multi-column still works. */
.dtg-gallery--masonry.dtg-no-js {
	display: block;
	column-count: var(--dtg-cols);
	column-gap: var(--dtg-gap);
}

.dtg-gallery--masonry.dtg-no-js .dtg-item {
	break-inside: avoid;
	-webkit-column-break-inside: avoid;
	page-break-inside: avoid;
	display: inline-block;
	width: 100%;
}

/* ---------------------------------------------------------------
   PINTEREST - column flow with card styling
   --------------------------------------------------------------- */

.dtg-gallery--pinterest {
	column-count: var(--dtg-cols);
	column-gap: var(--dtg-gap);
}

.dtg-gallery--pinterest .dtg-item {
	break-inside: avoid;
	-webkit-column-break-inside: avoid;
	page-break-inside: avoid;
	display: inline-block;
	width: 100%;
	margin-bottom: var(--dtg-gap);
	background: #fff;
	border-radius: calc(var(--dtg-radius) + 4px);
	box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 6px 16px rgba(0, 0, 0, 0.06);
	overflow: hidden;
	transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.dtg-gallery--pinterest .dtg-item:hover {
	box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1), 0 12px 28px rgba(0, 0, 0, 0.12);
	transform: translateY(-2px);
}

.dtg-gallery--pinterest .dtg-item__frame {
	border-radius: 0;
}

.dtg-gallery--pinterest .dtg-item__caption {
	margin: 0;
	padding: 12px 14px 14px;
	opacity: 0.85;
}

/* ---------------------------------------------------------------
   GRID - uniform square-ish tiles, images cropped to fill
   --------------------------------------------------------------- */

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

.dtg-gallery--grid .dtg-item__frame {
	aspect-ratio: 1 / 1;
}

.dtg-gallery--grid .dtg-item__img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	object-position: center;
}

/* ---------------------------------------------------------------
   JUSTIFIED - equal-height rows, widths set by JS from aspect ratio
   --------------------------------------------------------------- */

.dtg-gallery--justified {
	display: flex;
	flex-wrap: wrap;
	gap: var(--dtg-gap);
}

.dtg-gallery--justified .dtg-item {
	flex: 0 0 auto;
	height: var(--dtg-row-h);
	overflow: hidden;
}

.dtg-gallery--justified .dtg-item__link,
.dtg-gallery--justified .dtg-item__frame {
	height: 100%;
}

.dtg-gallery--justified .dtg-item__img {
	width: 100%;
	height: 100%;
	object-fit: cover;
}

.dtg-gallery--justified .dtg-item__caption {
	position: absolute;
	left: 0;
	right: 0;
	bottom: 0;
	margin: 0;
	padding: 24px 12px 10px;
	color: #fff;
	opacity: 1;
	background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
	font-size: 0.8125em;
}

/* ---------------------------------------------------------------
   MOSAIC - grid with feature tiles spanning extra rows/columns
   --------------------------------------------------------------- */

.dtg-gallery--mosaic {
	display: grid;
	grid-template-columns: repeat(var(--dtg-cols), minmax(0, 1fr));
	grid-auto-rows: var(--dtg-row-h);
	gap: var(--dtg-gap);
}

.dtg-gallery--mosaic .dtg-item__frame,
.dtg-gallery--mosaic .dtg-item__link {
	height: 100%;
}

.dtg-gallery--mosaic .dtg-item__img {
	width: 100%;
	height: 100%;
	object-fit: cover;
}

.dtg-gallery--mosaic .dtg-item--wide {
	grid-column: span 2;
}

.dtg-gallery--mosaic .dtg-item--wide-tall {
	grid-column: span 2;
	grid-row: span 2;
}

.dtg-gallery--mosaic .dtg-item__caption {
	position: absolute;
	left: 0;
	right: 0;
	bottom: 0;
	margin: 0;
	padding: 24px 12px 10px;
	color: #fff;
	opacity: 1;
	background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
	font-size: 0.8125em;
}

/* ---------------------------------------------------------------
   Responsive
   --------------------------------------------------------------- */

@media (max-width: 1024px) {
	.dtg-gallery--masonry,
	.dtg-gallery--grid,
	.dtg-gallery--mosaic {
		grid-template-columns: repeat(var(--dtg-cols-tablet), minmax(0, 1fr));
	}

	.dtg-gallery--pinterest,
	.dtg-gallery--masonry.dtg-no-js {
		column-count: var(--dtg-cols-tablet);
	}

	.dtg-gallery--mosaic .dtg-item--wide,
	.dtg-gallery--mosaic .dtg-item--wide-tall {
		grid-column: span 1;
		grid-row: span 1;
	}
}

@media (max-width: 767px) {
	.dtg-gallery--masonry,
	.dtg-gallery--grid,
	.dtg-gallery--mosaic {
		grid-template-columns: repeat(var(--dtg-cols-mobile), minmax(0, 1fr));
	}

	.dtg-gallery--pinterest,
	.dtg-gallery--masonry.dtg-no-js {
		column-count: var(--dtg-cols-mobile);
	}

	.dtg-gallery--justified .dtg-item {
		height: auto;
		width: 100% !important;
		flex-basis: 100%;
	}

	.dtg-gallery--justified .dtg-item__img {
		height: auto;
	}
}

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

.dtg-lightbox {
	position: fixed;
	inset: 0;
	z-index: 999999;
	display: flex;
	align-items: center;
	justify-content: center;
	background: rgba(12, 12, 12, 0.94);
	opacity: 0;
	visibility: hidden;
	transition: opacity 0.25s ease, visibility 0.25s ease;
}

.dtg-lightbox.is-open {
	opacity: 1;
	visibility: visible;
}

.dtg-lightbox__stage {
	max-width: 92vw;
	max-height: 86vh;
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 12px;
}

.dtg-lightbox__img {
	max-width: 92vw;
	max-height: 80vh;
	width: auto;
	height: auto;
	display: block;
	border-radius: 4px;
	box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.dtg-lightbox__caption {
	color: #f0f0f0;
	font-size: 0.9375rem;
	text-align: center;
	max-width: 70ch;
	margin: 0;
}

.dtg-lightbox__btn {
	position: absolute;
	background: rgba(255, 255, 255, 0.1);
	border: 0;
	color: #fff;
	width: 48px;
	height: 48px;
	border-radius: 50%;
	cursor: pointer;
	font-size: 22px;
	line-height: 1;
	display: flex;
	align-items: center;
	justify-content: center;
	transition: background 0.2s ease;
	padding: 0;
}

.dtg-lightbox__btn:hover,
.dtg-lightbox__btn:focus-visible {
	background: rgba(255, 255, 255, 0.24);
	outline: none;
}

.dtg-lightbox__close {
	top: 20px;
	right: 20px;
}

.dtg-lightbox__prev {
	left: 20px;
	top: 50%;
	transform: translateY(-50%);
}

.dtg-lightbox__next {
	right: 20px;
	top: 50%;
	transform: translateY(-50%);
}

.dtg-lightbox__counter {
	position: absolute;
	bottom: 20px;
	left: 50%;
	transform: translateX(-50%);
	color: rgba(255, 255, 255, 0.7);
	font-size: 0.8125rem;
	letter-spacing: 0.04em;
}

@media (max-width: 767px) {
	.dtg-lightbox__prev {
		left: 8px;
	}

	.dtg-lightbox__next {
		right: 8px;
	}

	.dtg-lightbox__close {
		top: 10px;
		right: 10px;
	}
}

body.dtg-lightbox-open {
	overflow: hidden;
}

@media (prefers-reduced-motion: reduce) {
	.dtg-item__img,
	.dtg-gallery--pinterest .dtg-item,
	.dtg-lightbox {
		transition: none !important;
	}
}