/**
 * BBJa Journale – Bibliothek und Blätter-Viewer.
 */

.bbja-journale {
	--bbja-green: #1f3f27;
	--bbja-green-light: #255b3b;
	--bbja-copper: #a1672b;
	--bbja-sand: #f8f4ef;
	--bbja-ink: #2d3134;
	--bbja-columns: 4;
}

.bbja-journale *,
.bbja-viewer * {
	box-sizing: border-box;
}

[hidden] {
	display: none !important;
}

/* ----------------------------------------------------------- Aktuelle Ausgabe */

.bbja-journale__featured {
	display: grid;
	grid-template-columns: minmax(200px, 300px) 1fr;
	gap: 40px;
	align-items: center;
	padding: 38px 40px;
	margin-bottom: 54px;
	background: var(--bbja-sand);
	border-radius: 4px;
	border-left: 5px solid var(--bbja-copper);
}

.bbja-journale__eyebrow {
	margin: 0 0 6px;
	font-size: 12px;
	font-weight: 700;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	color: var(--bbja-copper);
}

.bbja-journale__featured-title {
	margin: 0 0 14px;
	font-size: 30px;
	line-height: 1.2;
	color: var(--bbja-green);
}

.bbja-journale__featured-text {
	margin: 0 0 12px;
	color: var(--bbja-ink);
}

.bbja-journale__featured-meta {
	margin: 0 0 22px;
	font-size: 14px;
	color: #6b6f6c;
}

.bbja-journale__featured-actions {
	display: flex;
	flex-wrap: wrap;
	gap: 12px;
	margin: 0;
}

/* -------------------------------------------------------------------- Buttons */

.bbja-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	padding: 13px 26px;
	border: 2px solid transparent;
	border-radius: 3px;
	font-size: 14px;
	font-weight: 700;
	letter-spacing: 0.04em;
	text-decoration: none;
	cursor: pointer;
	transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.bbja-btn--primary {
	background: var(--bbja-copper, #a1672b);
	border-color: var(--bbja-copper, #a1672b);
	color: #fff;
}

.bbja-btn--primary:hover,
.bbja-btn--primary:focus {
	background: #8a5624;
	border-color: #8a5624;
	color: #fff;
}

.bbja-btn--ghost {
	background: transparent;
	border-color: var(--bbja-green, #1f3f27);
	color: var(--bbja-green, #1f3f27);
}

.bbja-btn--ghost:hover,
.bbja-btn--ghost:focus {
	background: var(--bbja-green, #1f3f27);
	color: #fff;
}

/* ------------------------------------------------------------------ Jahrgänge */

.bbja-journale__year {
	position: relative;
	margin: 46px 0 22px;
	padding-bottom: 10px;
	font-size: 22px;
	color: var(--bbja-green);
	border-bottom: 1px solid #e3ded6;
}

.bbja-journale__year::after {
	content: "";
	position: absolute;
	left: 0;
	bottom: -1px;
	width: 54px;
	height: 3px;
	background: var(--bbja-copper);
}

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

/* Die Selektoren sind bewusst spezifisch, damit die Listen-Styles des Themes
   (Einzug, Aufzählungszeichen) das Raster nicht verschieben. */
.bbja-journale ul.bbja-journale__grid {
	display: grid;
	grid-template-columns: repeat(var(--bbja-columns), 1fr);
	gap: 34px 28px;
	margin: 0;
	padding: 0;
	list-style: none;
	text-indent: 0;
}

.bbja-journale ul.bbja-journale__grid > li.bbja-journale__item {
	margin: 0;
	padding: 0;
	min-width: 0;
	list-style: none;
	background: none;
}

.bbja-journale ul.bbja-journale__grid > li.bbja-journale__item::before,
.bbja-journale ul.bbja-journale__grid > li.bbja-journale__item::marker {
	content: none;
}

.bbja-journal-card__cover {
	display: block;
	position: relative;
	width: 100%;
	padding: 0;
	margin: 0 0 14px;
	border: 0;
	background: #e9e5de;
	border-radius: 2px;
	cursor: pointer;
	overflow: hidden;
	box-shadow: 0 10px 24px rgba(31, 63, 39, 0.16), 0 2px 5px rgba(31, 63, 39, 0.1);
	transition: transform 0.28s ease, box-shadow 0.28s ease;
	aspect-ratio: 620 / 877;
}

.bbja-journal-card__cover img {
	display: block;
	width: 100%;
	height: 100%;
	object-fit: cover;
	margin: 0;
}

/* Buchrücken-Andeutung am linken Rand. */
.bbja-journal-card__cover::before {
	content: "";
	position: absolute;
	top: 0;
	left: 0;
	width: 9px;
	height: 100%;
	z-index: 2;
	background: linear-gradient(90deg, rgba(0, 0, 0, 0.24), rgba(0, 0, 0, 0.05) 55%, rgba(255, 255, 255, 0.14));
	pointer-events: none;
}

.bbja-journal-card__cover:hover,
.bbja-journal-card__cover:focus-visible {
	transform: translateY(-6px);
	box-shadow: 0 20px 38px rgba(31, 63, 39, 0.26), 0 4px 8px rgba(31, 63, 39, 0.12);
	outline: none;
}

.bbja-journal-card__hover {
	position: absolute;
	inset: 0;
	z-index: 3;
	display: flex;
	align-items: center;
	justify-content: center;
	background: rgba(31, 63, 39, 0.72);
	opacity: 0;
	transition: opacity 0.28s ease;
}

.bbja-journal-card__cover:hover .bbja-journal-card__hover,
.bbja-journal-card__cover:focus-visible .bbja-journal-card__hover {
	opacity: 1;
}

.bbja-journal-card__cta {
	padding: 11px 22px;
	background: var(--bbja-copper, #a1672b);
	color: #fff;
	font-size: 13px;
	font-weight: 700;
	letter-spacing: 0.05em;
	text-transform: uppercase;
	border-radius: 2px;
}

.bbja-journal-card__placeholder {
	position: absolute;
	inset: 0;
	display: flex;
	align-items: center;
	justify-content: center;
	background: var(--bbja-green, #1f3f27);
	color: #fff;
	font-size: 20px;
	font-weight: 700;
}

.bbja-journal-card__body {
	display: flex;
	flex-direction: column;
	gap: 3px;
}

.bbja-journal-card__title {
	font-size: 17px;
	font-weight: 700;
	color: var(--bbja-green, #1f3f27);
	line-height: 1.3;
}

.bbja-journal-card__meta {
	font-size: 13px;
	color: #7a7f7b;
}

.bbja-journal-card__download {
	margin-top: 4px;
	font-size: 13px;
	font-weight: 600;
	color: var(--bbja-copper, #a1672b);
	text-decoration: none;
}

.bbja-journal-card__download:hover {
	text-decoration: underline;
}

/* ----------------------------------------------------------- Featured-Deckblatt */

.bbja-journal-card__cover--featured {
	margin-bottom: 0;
	box-shadow: 0 22px 44px rgba(31, 63, 39, 0.28), 0 4px 10px rgba(31, 63, 39, 0.14);
}

/* ================================================================== VIEWER === */

body.bbja-viewer-open {
	overflow: hidden;
}

.bbja-viewer {
	position: fixed;
	inset: 0;
	z-index: 100000;
	display: flex;
	align-items: center;
	justify-content: center;
	font-family: inherit;
}

.bbja-viewer__backdrop {
	position: absolute;
	inset: 0;
	background: rgba(11, 20, 13, 0.94);
	backdrop-filter: blur(2px);
}

.bbja-viewer__panel {
	position: relative;
	z-index: 1;
	display: flex;
	flex-direction: column;
	width: 100%;
	height: 100%;
	color: #f2efe9;
}

/* --------------------------------------------------------------------- Leiste */

.bbja-viewer__bar {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 16px;
	flex: 0 0 auto;
	padding: 12px 20px;
	background: rgba(31, 63, 39, 0.96);
	border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.bbja-viewer__title {
	margin: 0;
	font-size: 16px;
	font-weight: 700;
	letter-spacing: 0.02em;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}

.bbja-viewer__tools {
	display: flex;
	align-items: center;
	gap: 4px;
}

.bbja-viewer__tool {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 38px;
	height: 38px;
	padding: 0;
	border: 0;
	border-radius: 3px;
	background: transparent;
	color: #f2efe9;
	cursor: pointer;
	transition: background-color 0.18s ease, color 0.18s ease;
}

.bbja-viewer__tool svg {
	width: 20px;
	height: 20px;
	fill: currentColor;
}

.bbja-viewer__tool:hover,
.bbja-viewer__tool:focus-visible {
	background: rgba(255, 255, 255, 0.14);
	color: #fff;
	outline: none;
}

.bbja-viewer__tool--close:hover {
	background: var(--bbja-copper, #a1672b);
}

.bbja-viewer__zoom {
	min-width: 52px;
	font-size: 12px;
	font-variant-numeric: tabular-nums;
	text-align: center;
	opacity: 0.85;
}

/* ---------------------------------------------------------------------- Bühne */

.bbja-viewer__stage {
	position: relative;
	flex: 1 1 auto;
	display: flex;
	align-items: center;
	justify-content: center;
	min-height: 0;
	padding: 12px 0;
}

.bbja-viewer__scroll {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 100%;
	height: 100%;
	perspective: 2800px;
	perspective-origin: 50% 50%;
}

.bbja-viewer__scroll.is-zoomed {
	overflow: auto;
	justify-content: flex-start;
	align-items: flex-start;
	padding: 20px;
	overscroll-behavior: contain;
}

.bbja-viewer__scroll.is-zoomed .bbja-book {
	margin: auto;
}

.bbja-book {
	position: relative;
	flex: 0 0 auto;
	transform-style: preserve-3d;
	filter: drop-shadow(0 26px 44px rgba(0, 0, 0, 0.55));
	transition: transform 0.1s linear;
}

.bbja-book__page {
	position: absolute;
	top: 0;
	overflow: hidden;
	background: #fff;
	z-index: 1;
	backface-visibility: hidden;
}

.bbja-book__page--left {
	left: 0;
}

.bbja-book__page--right {
	left: 50%;
}

.bbja-book.is-single .bbja-book__page--left {
	display: none;
}

.bbja-book.is-single .bbja-book__page--right {
	left: 0;
}

.bbja-book__page.is-empty {
	background: transparent;
}

.bbja-book__canvas {
	display: block;
	width: 100%;
	height: 100%;
}

/* Bundsteg-Schatten in der Heftmitte. */
.bbja-book__shadow {
	position: absolute;
	top: 0;
	left: 50%;
	width: 66px;
	height: 100%;
	transform: translateX(-50%);
	z-index: 3;
	pointer-events: none;
	background: linear-gradient(
		90deg,
		rgba(0, 0, 0, 0) 0%,
		rgba(0, 0, 0, 0.16) 42%,
		rgba(0, 0, 0, 0.28) 50%,
		rgba(0, 0, 0, 0.16) 58%,
		rgba(0, 0, 0, 0) 100%
	);
}

.bbja-book.is-single .bbja-book__shadow {
	display: none;
}

/* ----------------------------------------------------------- Umblätter-Effekt */

.bbja-book__flip {
	position: absolute;
	top: 0;
	z-index: 5;
	transform-style: preserve-3d;
	will-change: transform;
}

.bbja-book__face {
	position: absolute;
	inset: 0;
	overflow: hidden;
	background: #fff;
	backface-visibility: hidden;
	-webkit-backface-visibility: hidden;
}

.bbja-book__face--front {
	transform: rotateY(0deg);
}

.bbja-book__face--back {
	transform: rotateY(180deg);
}

.bbja-book__face::after {
	content: "";
	position: absolute;
	inset: 0;
	pointer-events: none;
	opacity: 0;
	background: linear-gradient(90deg, rgba(0, 0, 0, 0.42), rgba(0, 0, 0, 0) 55%);
}

.bbja-book__flip.is-forward .bbja-book__face--front::after,
.bbja-book__flip.is-backward .bbja-book__face--back::after {
	background: linear-gradient(270deg, rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0) 60%);
}

.bbja-book__flip:not([hidden]) .bbja-book__face--front::after {
	animation: bbja-shade-out 620ms cubic-bezier(0.35, 0.1, 0.25, 1) both;
}

.bbja-book__flip:not([hidden]) .bbja-book__face--back::after {
	animation: bbja-shade-in 620ms cubic-bezier(0.35, 0.1, 0.25, 1) both;
}

@keyframes bbja-shade-out {
	0% { opacity: 0; }
	55% { opacity: 0.5; }
	100% { opacity: 0.18; }
}

@keyframes bbja-shade-in {
	0% { opacity: 0.55; }
	60% { opacity: 0.3; }
	100% { opacity: 0; }
}

/* --------------------------------------------------------------- Navigation */

.bbja-viewer__nav {
	position: absolute;
	top: 50%;
	z-index: 8;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 52px;
	height: 52px;
	padding: 0;
	transform: translateY(-50%);
	border: 0;
	border-radius: 50%;
	background: rgba(255, 255, 255, 0.12);
	color: #fff;
	cursor: pointer;
	transition: background-color 0.18s ease, opacity 0.18s ease;
}

.bbja-viewer__nav svg {
	width: 24px;
	height: 24px;
}

.bbja-viewer__nav--prev { left: 18px; }
.bbja-viewer__nav--next { right: 18px; }

.bbja-viewer__nav:hover:not(:disabled) {
	background: var(--bbja-copper, #a1672b);
}

.bbja-viewer__nav:disabled {
	opacity: 0.22;
	cursor: default;
}

/* ------------------------------------------------------------ Laden / Fehler */

.bbja-viewer__loader,
.bbja-viewer__error {
	position: absolute;
	inset: 0;
	z-index: 9;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 16px;
	text-align: center;
	font-size: 15px;
}

.bbja-viewer__error {
	background: rgba(11, 20, 13, 0.9);
	padding: 24px;
}

.bbja-viewer__error p {
	margin: 0 0 14px;
	max-width: 480px;
}

.bbja-viewer__spinner {
	width: 42px;
	height: 42px;
	border: 3px solid rgba(255, 255, 255, 0.2);
	border-top-color: var(--bbja-copper, #a1672b);
	border-radius: 50%;
	animation: bbja-spin 0.9s linear infinite;
}

@keyframes bbja-spin {
	to { transform: rotate(360deg); }
}

/* ------------------------------------------------------------------- Fußzeile */

.bbja-viewer__footer {
	display: flex;
	align-items: center;
	gap: 18px;
	flex: 0 0 auto;
	padding: 12px 24px;
	background: rgba(31, 63, 39, 0.96);
	border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.bbja-viewer__range {
	flex: 1 1 auto;
	-webkit-appearance: none;
	appearance: none;
	height: 4px;
	border-radius: 2px;
	background: rgba(255, 255, 255, 0.24);
	cursor: pointer;
}

.bbja-viewer__range::-webkit-slider-thumb {
	-webkit-appearance: none;
	appearance: none;
	width: 16px;
	height: 16px;
	border: 0;
	border-radius: 50%;
	background: var(--bbja-copper, #a1672b);
	cursor: pointer;
}

.bbja-viewer__range::-moz-range-thumb {
	width: 16px;
	height: 16px;
	border: 0;
	border-radius: 50%;
	background: var(--bbja-copper, #a1672b);
	cursor: pointer;
}

.bbja-viewer__counter {
	flex: 0 0 auto;
	font-size: 13px;
	font-variant-numeric: tabular-nums;
	white-space: nowrap;
	opacity: 0.9;
}

/* ----------------------------------------------------------- Seitenübersicht */

.bbja-viewer__thumbs {
	position: absolute;
	left: 0;
	right: 0;
	bottom: 0;
	z-index: 12;
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(112px, 1fr));
	gap: 14px;
	max-height: 46vh;
	padding: 20px;
	overflow-y: auto;
	background: rgba(14, 26, 17, 0.98);
	border-top: 2px solid var(--bbja-copper, #a1672b);
}

.bbja-thumb {
	display: block;
	padding: 0;
	border: 0;
	background: transparent;
	color: #d8d3ca;
	cursor: pointer;
	text-align: center;
}

.bbja-thumb__frame {
	display: block;
	aspect-ratio: 620 / 877;
	background: rgba(255, 255, 255, 0.08);
	border: 1px solid rgba(255, 255, 255, 0.16);
	overflow: hidden;
	transition: border-color 0.18s ease;
}

.bbja-thumb__frame canvas {
	display: block;
	width: 100%;
	height: 100%;
}

.bbja-thumb:hover .bbja-thumb__frame {
	border-color: var(--bbja-copper, #a1672b);
}

.bbja-thumb__no {
	display: block;
	margin-top: 5px;
	font-size: 11px;
	font-variant-numeric: tabular-nums;
}

/* ------------------------------------------------------------------ Responsiv */

@media (max-width: 1100px) {
	.bbja-journale {
		--bbja-columns: 3;
	}
}

@media (max-width: 900px) {
	.bbja-journale__featured {
		grid-template-columns: 1fr;
		gap: 26px;
		padding: 28px;
		text-align: center;
	}

	.bbja-journale__featured .bbja-journal-card__cover {
		max-width: 240px;
		margin: 0 auto;
	}

	.bbja-journale__featured-actions {
		justify-content: center;
	}
}

@media (max-width: 782px) {
	.bbja-journale {
		--bbja-columns: 2;
	}

	.bbja-viewer__bar {
		padding: 8px 10px;
	}

	.bbja-viewer__title {
		font-size: 14px;
	}

	.bbja-viewer__tool {
		width: 34px;
		height: 34px;
	}

	.bbja-viewer__zoom {
		display: none;
	}

	.bbja-viewer__nav {
		width: 40px;
		height: 40px;
	}

	.bbja-viewer__nav--prev { left: 4px; }
	.bbja-viewer__nav--next { right: 4px; }

	.bbja-viewer__footer {
		padding: 10px 14px;
		gap: 12px;
	}

	.bbja-viewer__counter {
		font-size: 12px;
	}
}

@media (max-width: 480px) {
	.bbja-journale__grid {
		gap: 24px 16px;
	}

	.bbja-journale__featured-title {
		font-size: 24px;
	}
}

@media (prefers-reduced-motion: reduce) {
	.bbja-journal-card__cover,
	.bbja-journal-card__hover,
	.bbja-book {
		transition: none;
	}

	.bbja-book__flip:not([hidden]) .bbja-book__face::after {
		animation: none;
	}
}