/* Immersive Architektur-Bildershow – max. 1600×1200, Karussell-Wechsel */

:root {
	--bs-bg: #000000;
	--bs-fg: #f2f5f6;
	--bs-muted: rgba(242, 245, 246, 0.62);
	--bs-accent: #a1b9be;
	--bs-ui-bg: rgba(0, 0, 0, 0.48);
	--bs-ease: cubic-bezier(0.22, 1, 0.36, 1);
	--bs-slide: 0.85s;
	--bs-max-w: 1600px;
	--bs-max-h: 1200px;
}

html.bildershow-page,
body.bildershow {
	margin: 0 !important;
	width: 100%;
	height: 100%;
	background: var(--bs-bg);
	color: var(--bs-fg);
	overflow: hidden;
	font-family: Overpass, "Segoe UI", sans-serif;
	padding-right: 0 !important;
}

body.bildershow main {
	display: block;
	position: relative;
	width: 100%;
	height: 100vh;
	height: 100dvh;
	min-height: 100vh;
	min-height: 100dvh;
	margin: 0;
	padding: 0;
	max-width: none;
	overflow: hidden;
}

body.bildershow section.bildershow {
	position: fixed;
	inset: 0;
	width: 100%;
	height: 100%;
	margin: 0;
	padding: 0 !important;
	overflow: hidden;
	background: var(--bs-bg);
	z-index: 5;
}

.bildershow__stage {
	position: absolute;
	inset: 0;
	display: flex;
	align-items: center;
	justify-content: center;
	background: #000;
	z-index: 1;
	overflow: hidden;
}

/* Layer = Vollfläche für Slide-Richtung; Bild darin max. 1600×1200 */
body.bildershow section.bildershow figure.bildershow__layer {
	position: absolute;
	inset: 0;
	margin: 0;
	padding: 0 !important;
	width: 100%;
	height: 100%;
	max-width: none;
	display: flex;
	align-items: center;
	justify-content: center;
	/* Deckkendes Schwarz: altes Bild scheint nicht durch Letterbox/Ränder */
	background: #000;
	opacity: 1;
	visibility: visible;
	z-index: 1;
	overflow: hidden;
	pointer-events: none;
	transform: translate3d(0, 0, 0);
	will-change: transform;
}

body.bildershow section.bildershow figure.bildershow__layer:not(.is-active):not(.is-leaving):not(.is-entering) {
	visibility: hidden;
	z-index: 0;
}

body.bildershow section.bildershow figure.bildershow__layer.is-active {
	z-index: 3;
	visibility: visible;
}

body.bildershow section.bildershow figure.bildershow__layer.is-leaving {
	z-index: 2;
	visibility: visible;
}

body.bildershow section.bildershow figure.bildershow__layer.is-entering {
	z-index: 4;
	visibility: visible;
}

body.bildershow section.bildershow figure.bildershow__layer.is-animating {
	transition: transform var(--bs-slide) var(--bs-ease);
}

/* Startpositionen für einfahrendes Bild */
body.bildershow section.bildershow figure.bildershow__layer.is-from-left {
	transform: translate3d(-100%, 0, 0);
}
body.bildershow section.bildershow figure.bildershow__layer.is-from-right {
	transform: translate3d(100%, 0, 0);
}
body.bildershow section.bildershow figure.bildershow__layer.is-from-up {
	transform: translate3d(0, -100%, 0);
}
body.bildershow section.bildershow figure.bildershow__layer.is-from-down {
	transform: translate3d(0, 100%, 0);
}

/* Zielpositionen für ausfahrendes Bild */
body.bildershow section.bildershow figure.bildershow__layer.is-to-left {
	transform: translate3d(-100%, 0, 0);
}
body.bildershow section.bildershow figure.bildershow__layer.is-to-right {
	transform: translate3d(100%, 0, 0);
}
body.bildershow section.bildershow figure.bildershow__layer.is-to-up {
	transform: translate3d(0, -100%, 0);
}
body.bildershow section.bildershow figure.bildershow__layer.is-to-down {
	transform: translate3d(0, 100%, 0);
}

body.bildershow section.bildershow figure.bildershow__layer.is-center {
	transform: translate3d(0, 0, 0);
}

/* Kein Hochskalieren über 1600×1200 – schwarzer Rand bei Bedarf */
body.bildershow section.bildershow figure.bildershow__layer img {
	display: block !important;
	width: auto !important;
	height: auto !important;
	max-width: min(var(--bs-max-w), 100vw) !important;
	max-height: min(var(--bs-max-h), 100vh) !important;
	object-fit: contain;
	object-position: center center;
	opacity: 1 !important;
	transform: none !important;
	animation: none !important;
	-webkit-backface-visibility: hidden;
	backface-visibility: hidden;
	user: drop-shadow(0 8px 28px rgba(0, 0, 0, 0.45));
}

.bildershow__empty {
	position: absolute;
	inset: 0;
	display: grid;
	place-items: center;
	margin: 0;
	padding: 2rem;
	text-align: center;
	color: var(--bs-muted);
	font-size: clamp(1rem, 2.2vw, 1.25rem);
	z-index: 3;
}

.bildershow__empty code {
	color: var(--bs-accent);
}

.bildershow__logo {
	position: absolute;
	top: clamp(0.85rem, 2.5vw, 1.5rem);
	left: clamp(0.85rem, 2.5vw, 1.5rem);
	z-index: 100;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	padding: 0.55rem 0.75rem;
	border-radius: 0.35rem;
	/* Logo-SVG ist dunkel (#191919) – heller Untergrund, sonst unsichtbar auf Schwarz */
	background: rgba(255, 255, 255, 0.92);
	box-shadow: 0 4px 18px rgba(0, 0, 0, 0.35);
	opacity: 0;
	transform: translateY(-8px);
	animation: bildershow-logo-in 0.9s var(--bs-ease) 0.25s forwards;
	-webkit-tap-highlight-color: transparent;
}

.bildershow__logo img {
	display: block;
	width: 120px;
	height: auto;
	max-width: none !important;
	opacity: 1 !important;
	/* zusätzlich hell/dunkel-sicher */
	filter: none;
}

.bildershow__ui {
	position: absolute;
	left: 50%;
	bottom: clamp(1.1rem, 3.5vw, 2.25rem);
	transform: translateX(-50%) translateY(12px);
	z-index: 30;
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 0.55rem;
	padding: 0.85rem 1.25rem 0.95rem;
	border-radius: 999px;
	background: var(--bs-ui-bg);
	backdrop-filter: blur(10px);
	-webkit-backdrop-filter: blur(10px);
	box-shadow: 0 10px 40px rgba(0, 0, 0, 0.28);
	opacity: 0;
	animation: bildershow-ui-in 1s var(--bs-ease) 0.45s forwards;
	pointer-events: auto;
}

.bildershow__category {
	margin: 0;
	font-size: 0.72rem;
	letter-spacing: 0.22em;
	text-transform: uppercase;
	color: var(--bs-accent);
}

.bildershow__progress {
	margin: 0;
	font-size: 0.95rem;
	font-weight: 300;
	letter-spacing: 0.08em;
	color: var(--bs-fg);
	font-variant-numeric: tabular-nums;
}

.bildershow__progress-sep {
	margin: 0 0.35em;
	color: var(--bs-muted);
}

.bildershow__controls {
	display: flex;
	align-items: center;
	gap: 0.55rem;
}

.bildershow__btn {
	appearance: none;
	border: 1px solid rgba(161, 185, 190, 0.45);
	background: transparent;
	color: var(--bs-fg);
	width: 2.55rem;
	height: 2.55rem;
	border-radius: 999px;
	display: inline-grid;
	place-items: center;
	cursor: pointer;
	transition: background 0.25s var(--bs-ease), border-color 0.25s var(--bs-ease), transform 0.25s var(--bs-ease);
	padding: 0;
	line-height: 1;
	font-size: 1rem;
}

.bildershow__btn:hover,
.bildershow__btn:focus-visible {
	outline: none;
	background: rgba(161, 185, 190, 0.18);
	border-color: var(--bs-accent);
	transform: translateY(-1px);
}

.bildershow__btn--play {
	width: 3rem;
	height: 3rem;
	border-color: var(--bs-accent);
}

.bildershow__hint {
	margin: 0;
	font-size: 0.68rem;
	letter-spacing: 0.06em;
	color: var(--bs-muted);
	white-space: nowrap;
}

.bildershow__hit {
	position: absolute;
	/* unter dem Logo beginnen, damit es nicht verdeckt/überlagert wird */
	top: 5.5rem;
	bottom: 0;
	width: 28%;
	max-width: 22rem;
	z-index: 10;
	border: 0;
	padding: 0;
	margin: 0;
	background: transparent;
	cursor: pointer;
	-webkit-tap-highlight-color: transparent;
}

.bildershow__hit--prev { left: 0; }
.bildershow__hit--next { right: 0; }

@keyframes bildershow-ui-in {
	to {
		opacity: 1;
		transform: translateX(-50%) translateY(0);
	}
}

@keyframes bildershow-logo-in {
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

@media (max-width: 720px) {
	.bildershow__hint {
		display: none;
	}

	.bildershow__ui {
		border-radius: 1.25rem;
		width: calc(100% - 1.5rem);
		max-width: 22rem;
		padding: 0.75rem 1rem;
	}

	.bildershow__logo img {
		width: 96px;
		height: 40px;
	}

	.bildershow__hit {
		width: 22%;
	}
}

@media (prefers-reduced-motion: reduce) {
	body.bildershow section.bildershow figure.bildershow__layer,
	body.bildershow section.bildershow figure.bildershow__layer.is-animating {
		transition: none !important;
	}

	.bildershow__logo,
	.bildershow__ui {
		animation: none;
		opacity: 1;
		transform: none;
	}

	.bildershow__ui {
		transform: translateX(-50%);
	}
}