/**
 * mod_wmgallery — frontend styles
 *
 * @copyright  (C) 2026 Würfelmedia
 * @license    GNU General Public License version 2 or later
 *
 * Layout designs are switched via the wrapper modifier class:
 *   .wmgallery--mosaic   Design 1 — irregular tiles (screenshot look)
 *   .wmgallery--grid     uniform aspect-ratio cards
 *   .wmgallery--masonry  CSS-columns, natural image heights
 *
 * Per-instance values arrive as CSS custom properties on the wrapper.
 */

.wmgallery {
	--wmg-columns: 3;
	--wmg-columns-tabl: 2;
	--wmg-columns-mob: 1;
	--wmg-gap: 16px;
	--wmg-radius: 10px;
	--wmg-ratio: 4 / 3;
	--wmg-accent: #c9a24b;
	--wmg-row: 220px;

	--wmg-bg: transparent;
	--wmg-fg: #f4f4f5;
	--wmg-muted: rgba(244, 244, 245, 0.6);

	box-sizing: border-box;
	width: 100%;
	color: var(--wmg-fg);
	background: var(--wmg-bg);
}

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

/* --- Themes --------------------------------------------------------------- */
.wmgallery--theme-dark {
	--wmg-bg: #0d0f14;
	--wmg-fg: #f4f4f5;
	--wmg-muted: rgba(244, 244, 245, 0.55);
	padding: clamp(1.5rem, 4vw, 3.5rem);
	border-radius: calc(var(--wmg-radius) + 6px);
}

.wmgallery--theme-light {
	--wmg-bg: #ffffff;
	--wmg-fg: #16181d;
	--wmg-muted: rgba(22, 24, 29, 0.55);
	padding: clamp(1.5rem, 4vw, 3.5rem);
	border-radius: calc(var(--wmg-radius) + 6px);
}

.wmgallery--theme-transparent {
	--wmg-bg: transparent;
	--wmg-fg: inherit;
	--wmg-muted: currentColor;
}

/* --- Header --------------------------------------------------------------- */
.wmgallery__header {
	display: flex;
	align-items: flex-end;
	justify-content: space-between;
	gap: 1rem 2rem;
	flex-wrap: wrap;
	margin-bottom: clamp(1.25rem, 3vw, 2.5rem);
}

.wmgallery__eyebrow {
	display: inline-flex;
	align-items: center;
	gap: 0.9rem;
	font-size: 0.72rem;
	font-weight: 600;
	letter-spacing: 0.28em;
	text-transform: uppercase;
	color: var(--wmg-accent);
}

.wmgallery__eyebrow::before {
	content: "";
	width: 2.4rem;
	height: 2px;
	background: var(--wmg-accent);
	display: inline-block;
}

.wmgallery__heading {
	margin: 0.6rem 0 0;
	font-family: Georgia, "Times New Roman", "Playfair Display", serif;
	font-weight: 500;
	font-size: clamp(2rem, 5vw, 3.4rem);
	line-height: 1.05;
	letter-spacing: 0.01em;
}

.wmgallery__hint {
	font-size: 0.8rem;
	color: var(--wmg-muted);
	white-space: nowrap;
}

/* --- Grid container ------------------------------------------------------- */
.wmgallery__grid {
	display: grid;
	grid-template-columns: repeat(var(--wmg-columns), minmax(0, 1fr));
	gap: var(--wmg-gap);
}

/* --- Item (shared) -------------------------------------------------------- */
.wmgallery__item {
	position: relative;
	overflow: hidden;
	border-radius: var(--wmg-radius);
	background: rgba(127, 127, 127, 0.12);
}

.wmgallery__link {
	display: block;
	position: absolute;
	inset: 0;
	width: 100%;
	height: 100%;
	margin: 0;
	padding: 0;
	border: 0;
	background: none;
	cursor: pointer;
	overflow: hidden;
	border-radius: inherit;
	color: var(--wmg-fg);
	-webkit-tap-highlight-color: transparent;
}

.wmgallery__img {
	display: block;
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
	will-change: transform;
}

.wmgallery__overlay {
	position: absolute;
	inset: 0;
	background: linear-gradient(to top, rgba(0, 0, 0, 0.72) 0%, rgba(0, 0, 0, 0.15) 42%, rgba(0, 0, 0, 0) 68%);
	opacity: 0;
	transition: opacity 0.45s ease;
	pointer-events: none;
}

.wmgallery--has-captions .wmgallery__overlay {
	opacity: 0.85;
}

/* Caption chip */
.wmgallery__caption {
	position: absolute;
	left: 1rem;
	bottom: 0.95rem;
	right: 1rem;
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
	font-size: 0.72rem;
	font-weight: 600;
	letter-spacing: 0.16em;
	text-transform: uppercase;
	color: #fff;
	text-shadow: 0 1px 6px rgba(0, 0, 0, 0.6);
	pointer-events: none;
	transform: translateY(4px);
	opacity: 0.92;
	transition: transform 0.45s ease, opacity 0.45s ease;
}

.wmgallery__caption .wmg-icon {
	flex: 0 0 auto;
	opacity: 0.9;
}

.wmgallery__caption-text {
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}

/* Zoom affordance (top-right) */
.wmgallery__zoom {
	position: absolute;
	top: 0.85rem;
	right: 0.85rem;
	display: grid;
	place-items: center;
	width: 2.1rem;
	height: 2.1rem;
	border-radius: 50%;
	color: #fff;
	background: rgba(0, 0, 0, 0.35);
	backdrop-filter: blur(4px);
	opacity: 0;
	transform: scale(0.8);
	transition: opacity 0.35s ease, transform 0.35s ease;
	pointer-events: none;
}

/* --- Hover behaviours ----------------------------------------------------- */
.wmgallery--hover-zoom .wmgallery__link:hover .wmgallery__img,
.wmgallery--hover-zoom .wmgallery__link:focus-visible .wmgallery__img {
	transform: scale(1.06);
}

.wmgallery--hover-lift .wmgallery__item {
	transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.wmgallery--hover-lift .wmgallery__item:hover {
	transform: translateY(-6px);
	box-shadow: 0 18px 40px -18px rgba(0, 0, 0, 0.65);
}

.wmgallery__link:hover .wmgallery__overlay,
.wmgallery__link:focus-visible .wmgallery__overlay {
	opacity: 1;
}

.wmgallery__link:hover .wmgallery__caption,
.wmgallery__link:focus-visible .wmgallery__caption {
	transform: translateY(0);
	opacity: 1;
}

.wmgallery__link:hover .wmgallery__zoom,
.wmgallery__link:focus-visible .wmgallery__zoom {
	opacity: 1;
	transform: scale(1);
}

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

/* --- Design 1: MOSAIC ----------------------------------------------------- */
.wmgallery--mosaic .wmgallery__grid {
	grid-auto-rows: var(--wmg-row);
	grid-auto-flow: dense;
}

.wmgallery--mosaic .wmgallery__item--normal { grid-row: span 1; }
.wmgallery--mosaic .wmgallery__item--tall   { grid-row: span 2; }
.wmgallery--mosaic .wmgallery__item--wide    { grid-column: span 2; }
.wmgallery--mosaic .wmgallery__item--big     { grid-column: span 2; grid-row: span 2; }

/* --- Design 2: GRID (uniform cards) --------------------------------------- */
.wmgallery--grid .wmgallery__item {
	aspect-ratio: var(--wmg-ratio);
}

/* --- Design 3: MASONRY (CSS columns) -------------------------------------- */
.wmgallery--masonry .wmgallery__grid {
	display: block;
	column-count: var(--wmg-columns);
	column-gap: var(--wmg-gap);
}

.wmgallery--masonry .wmgallery__item {
	break-inside: avoid;
	margin: 0 0 var(--wmg-gap);
	display: block;
}

.wmgallery--masonry .wmgallery__link {
	position: relative;
	inset: auto;
	height: auto;
}

.wmgallery--masonry .wmgallery__img {
	height: auto;
}

/* --- Reveal animations ---------------------------------------------------- */
.wmgallery[data-wmg-animation="fade"] .wmgallery__item,
.wmgallery[data-wmg-animation="fade-up"] .wmgallery__item,
.wmgallery[data-wmg-animation="zoom"] .wmgallery__item {
	opacity: 0;
	transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
	transition-delay: var(--wmg-delay, 0ms);
}

.wmgallery[data-wmg-animation="fade-up"] .wmgallery__item { transform: translateY(28px); }
.wmgallery[data-wmg-animation="zoom"] .wmgallery__item    { transform: scale(0.92); }

.wmgallery[data-wmg-animation] .wmgallery__item.is-inview {
	opacity: 1;
	transform: none;
}

/* --- Responsive columns --------------------------------------------------- */
@media (max-width: 992px) {
	.wmgallery { --wmg-columns: var(--wmg-columns-tabl); }
	.wmgallery--mosaic { --wmg-row: 180px; }
}

@media (max-width: 600px) {
	.wmgallery { --wmg-columns: var(--wmg-columns-mob); }
	.wmgallery--mosaic .wmgallery__item--wide,
	.wmgallery--mosaic .wmgallery__item--big { grid-column: span 1; }
	.wmgallery__header { align-items: flex-start; }
	.wmgallery__hint { white-space: normal; }
}

/* ======================================================================== */
/* Lightbox                                                                  */
/* ======================================================================== */
.wmgallery-lightbox {
	position: fixed;
	inset: 0;
	z-index: 10000;
	display: flex;
	align-items: center;
	justify-content: center;
	padding: clamp(1rem, 4vw, 3rem);
	opacity: 0;
	visibility: hidden;
	transition: opacity 0.35s ease, visibility 0s linear 0.35s;
}

.wmgallery-lightbox.is-open {
	opacity: 1;
	visibility: visible;
	transition: opacity 0.35s ease;
}

.wmgallery-lightbox__backdrop {
	position: absolute;
	inset: 0;
	background: rgba(8, 9, 12, 0.92);
	backdrop-filter: blur(6px);
}

.wmgallery-lightbox__stage {
	position: relative;
	margin: 0;
	max-width: min(92vw, 1400px);
	max-height: 86vh;
	display: flex;
	flex-direction: column;
	align-items: center;
	z-index: 1;
}

.wmgallery-lightbox__img {
	max-width: 100%;
	max-height: 78vh;
	width: auto;
	height: auto;
	object-fit: contain;
	border-radius: 6px;
	box-shadow: 0 30px 80px -20px rgba(0, 0, 0, 0.8);
	background: #111;
}

.wmgallery-lightbox__img.is-swapping {
	opacity: 0;
	transform: scale(0.97);
}

.wmgallery-lightbox__img {
	transition: opacity 0.28s ease, transform 0.28s ease;
}

.wmgallery-lightbox.is-open .wmgallery-lightbox__img {
	animation: wmg-pop 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes wmg-pop {
	from { opacity: 0; transform: scale(0.9); }
	to   { opacity: 1; transform: scale(1); }
}

.wmgallery-lightbox__caption {
	margin-top: 1rem;
	color: #f4f4f5;
	font-size: 0.85rem;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	text-align: center;
	min-height: 1.2em;
}

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

.wmgallery-lightbox__counter {
	position: absolute;
	top: -2.2rem;
	left: 0;
	color: rgba(244, 244, 245, 0.6);
	font-size: 0.8rem;
	letter-spacing: 0.1em;
}

.wmgallery-lightbox__close,
.wmgallery-lightbox__nav {
	position: absolute;
	z-index: 2;
	display: grid;
	place-items: center;
	color: #fff;
	background: rgba(255, 255, 255, 0.08);
	border: 1px solid rgba(255, 255, 255, 0.14);
	border-radius: 50%;
	cursor: pointer;
	transition: background 0.25s ease, transform 0.25s ease, opacity 0.25s ease;
}

.wmgallery-lightbox__close:hover,
.wmgallery-lightbox__nav:hover {
	background: rgba(255, 255, 255, 0.2);
}

.wmgallery-lightbox__close {
	top: clamp(1rem, 3vw, 2rem);
	right: clamp(1rem, 3vw, 2rem);
	width: 2.8rem;
	height: 2.8rem;
}

.wmgallery-lightbox__nav {
	top: 50%;
	transform: translateY(-50%);
	width: 3.2rem;
	height: 3.2rem;
}

.wmgallery-lightbox__nav:hover { transform: translateY(-50%) scale(1.08); }
.wmgallery-lightbox__nav--prev { left: clamp(0.75rem, 3vw, 2rem); }
.wmgallery-lightbox__nav--next { right: clamp(0.75rem, 3vw, 2rem); }

.wmgallery-lightbox__nav[hidden] { display: none; }

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

@media (max-width: 600px) {
	.wmgallery-lightbox__nav {
		width: 2.6rem;
		height: 2.6rem;
		bottom: 1rem;
		top: auto;
		transform: none;
	}
	.wmgallery-lightbox__nav:hover { transform: scale(1.08); }
	.wmgallery-lightbox__nav--prev { left: 25%; }
	.wmgallery-lightbox__nav--next { right: 25%; }
}

/* --- Reduced motion ------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
	.wmgallery *,
	.wmgallery-lightbox * {
		transition: none !important;
		animation: none !important;
	}
	.wmgallery[data-wmg-animation] .wmgallery__item {
		opacity: 1 !important;
		transform: none !important;
	}
}