/* BERR Katalog-Galerie – Farben/Abstände zentral über CSS-Variablen anpassbar */
:root {
	--berr-kg-akzent: #c4007a;        /* BERR-Magenta */
	--berr-kg-akzent-2: #1a8ca3;      /* Petrol */
	--berr-kg-text: #333;
	--berr-kg-text-hell: #6b6b6b;
	--berr-kg-radius: 6px;
	--berr-kg-abstand: clamp(1.25rem, 3vw, 2.5rem);
	--berr-kg-cover-max: 280px;
	--berr-kg-overlay: rgba(20, 20, 25, .82);
	--berr-kg-schatten: 0 4px 14px rgba(0,0,0,.18);        /* "none" = ganz ohne Schatten */
	--berr-kg-schatten-hover: 0 10px 26px rgba(0,0,0,.25);
}

/* ---------- Raster ---------- */
.berr-kataloge {
	display: grid;
	grid-template-columns: repeat(var(--berr-kg-spalten, 3), minmax(0, 1fr));
	gap: var(--berr-kg-abstand);
	align-items: start;
	margin: 2rem auto;
	max-width: 1100px;
}
@media (max-width: 900px) { .berr-kataloge { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .berr-kataloge { grid-template-columns: 1fr; } }

/* ---------- Karte ---------- */
.berr-katalog {
	margin: 0;
	display: flex;
	flex-direction: column;
	align-items: center;
	text-align: center;
}

.berr-katalog__cover {
	position: relative;
	display: block;
	width: 100%;
	max-width: var(--berr-kg-cover-max);
	line-height: 0;
	background: none;
	border: 0;
	padding: 0;
	border-radius: 0;
	overflow: hidden;
	box-shadow: var(--berr-kg-schatten);
	transition: transform .25s ease, box-shadow .25s ease;
	cursor: pointer;
}
.berr-katalog__cover img {
	width: 100%;
	height: auto;                      /* Originalformat des Covers, nichts abschneiden */
	display: block;
	margin: 0;
	border: 0;
	border-radius: 0;
	box-shadow: none;
}
a.berr-katalog__cover:hover,
a.berr-katalog__cover:focus-visible {
	transform: translateY(-6px);
	box-shadow: var(--berr-kg-schatten-hover);
	outline: none;
}
a.berr-katalog__cover:focus-visible { box-shadow: 0 0 0 3px var(--berr-kg-akzent); }

/* Buch-Symbol erscheint beim Hover */
.berr-katalog__icon {
	position: absolute;
	inset: 0;
	margin: auto;
	width: 64px;
	height: 64px;
	border-radius: 50%;
	display: grid;
	place-items: center;
	color: #fff;
	background: rgba(0,0,0,.45);
	opacity: 0;
	transform: scale(.85);
	transition: opacity .25s ease, transform .25s ease;
}
a.berr-katalog__cover:hover .berr-katalog__icon,
a.berr-katalog__cover:focus-visible .berr-katalog__icon { opacity: 1; transform: scale(1); }

/* Fallback: Cover über das FlippingBook-Plugin */
.berr-katalog__cover--fbo { cursor: default; aspect-ratio: 210 / 297; box-shadow: none; }
.berr-katalog__cover--fbo iframe,
.berr-katalog__cover--fbo .fbo-embed {
	width: 100% !important;
	height: 100% !important;
	border: 0;
}

/* ---------- Text ---------- */
.berr-katalog__text {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: .3rem;
	margin-top: 1.1rem;
}
.berr-katalog__titel {
	font-size: 1.15rem;
	font-weight: 700;
	color: var(--berr-kg-text);
	line-height: 1.3;
}
.berr-katalog__untertitel {
	font-size: .95rem;
	color: var(--berr-kg-text-hell);
}
.berr-katalog__button {
	margin-top: .6rem;
	display: inline-block;
	padding: .55em 1.4em;
	border-radius: 999px;
	background: var(--berr-kg-akzent);
	color: #fff !important;
	font-weight: 600;
	font-size: .95rem;
	text-decoration: none !important;
	transition: background .2s ease;
}
.berr-katalog__button:hover,
.berr-katalog__button:focus-visible { background: var(--berr-kg-akzent-2); }

/* ---------- Popup ---------- */
.berr-kg-modal {
	position: fixed;
	inset: 0;
	z-index: 99999;
	display: flex;
	align-items: center;
	justify-content: center;
	padding: clamp(0px, 3vw, 40px);
	background: var(--berr-kg-overlay);
	opacity: 0;
	visibility: hidden;
	transition: opacity .25s ease, visibility 0s linear .25s;
}
.berr-kg-modal.is-open {
	opacity: 1;
	visibility: visible;
	transition: opacity .25s ease;
}
.berr-kg-modal__box {
	position: relative;
	width: 100%;
	max-width: 1400px;
	height: 100%;
	max-height: 900px;
	background: #fff;
	border-radius: var(--berr-kg-radius);
	overflow: hidden;
	box-shadow: 0 20px 60px rgba(0,0,0,.4);
	transform: scale(.97);
	transition: transform .25s ease;
}
.berr-kg-modal.is-open .berr-kg-modal__box { transform: scale(1); }
.berr-kg-modal__frame {
	width: 100%;
	height: 100%;
	border: 0;
	display: block;
}
.berr-kg-modal__close {
	position: absolute;
	top: 10px;
	right: 10px;
	z-index: 2;
	width: 44px;
	height: 44px;
	border: 0;
	border-radius: 50%;
	background: rgba(0,0,0,.6);
	color: #fff;
	font-size: 26px;
	line-height: 1;
	cursor: pointer;
	display: grid;
	place-items: center;
	padding: 0;
}
.berr-kg-modal__close:hover,
.berr-kg-modal__close:focus-visible { background: var(--berr-kg-akzent); outline: none; }
.berr-kg-modal__loader {
	position: absolute;
	inset: 0;
	margin: auto;
	width: 42px;
	height: 42px;
	border: 3px solid #ddd;
	border-top-color: var(--berr-kg-akzent);
	border-radius: 50%;
	animation: berr-kg-spin .8s linear infinite;
}
.berr-kg-modal.is-loaded .berr-kg-modal__loader { display: none; }
@keyframes berr-kg-spin { to { transform: rotate(360deg); } }

/* Mobil: Vollbild */
@media (max-width: 700px) {
	.berr-kg-modal { padding: 0; }
	.berr-kg-modal__box { max-height: none; border-radius: 0; }
}

html.berr-kg-noscroll,
html.berr-kg-noscroll body { overflow: hidden; }

@media (prefers-reduced-motion: reduce) {
	.berr-katalog__cover, .berr-kg-modal, .berr-kg-modal__box, .berr-katalog__icon { transition: none; }
}