/* ==========================================================================
   Baukasten-Block "Blaetterkatalog"
   Karten nutzen die Optik der Kachel-Uebersicht (npuot-kacheln / npuot-kachel)
   und ergaenzen nur Vorschau, Aktionen und den Dialog.
   Violett #5e5684 statt #7c749f: erreicht 6,7:1 auf Weiss (AA verlangt 4,5:1).
   ========================================================================== */

.npuot-flipbook {
	--fb-accent: #5e5684;
	--fb-accent-hover: #4a4369;
	--fb-focus: #002c50;
	--fb-text: #1f1f1f;
	--fb-muted: #4a4a4a;
	--fb-line: #dcd9e4;
}

/* Nur fuer Vorlesehilfen */
.npuot-flipbook__sr,
.npuot-flipbook__btn[data-action="first"] .npuot-flipbook__btn-text,
.npuot-flipbook__btn[data-action="last"] .npuot-flipbook__btn-text {
	position: absolute !important;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border: 0;
}

/* --------------------------------------------------------------------------
   Karten im Raster
   -------------------------------------------------------------------------- */

.npuot-flipbook__grid {
	list-style: none;
	margin-left: 0;
	padding-left: 0;
}

.npuot-flipbook-card {
	margin: 0;
}

.npuot-flipbook-card::marker {
	content: none;
}

/* Vorschau: Hochformat-Seite mittig in der Bildflaeche */
.npuot-flipbook-card .npuot-flipbook-card__vorschau {
	position: relative;
	display: flex;
	align-items: center;
	justify-content: center;
	height: auto;
	aspect-ratio: 4 / 3;
	padding: 0.75rem;
	box-sizing: border-box;
	overflow: hidden;
}

.npuot-flipbook-card__vorschau img,
.npuot-flipbook-card__canvas {
	max-width: 100%;
	max-height: 100%;
	box-shadow: 0 0 0 1px var(--fb-line), 0 3px 10px rgba(0, 0, 0, 0.12);
	background: #fff;
	transition: transform 0.2s ease;
}

.npuot-flipbook-card__vorschau img {
	width: auto;
	height: auto;
	object-fit: contain;
}

.npuot-flipbook-card__canvas {
	display: none;
}

.npuot-flipbook-card.has-preview .npuot-flipbook-card__canvas {
	display: block;
}

.npuot-flipbook-card.has-preview .npuot-flipbook-card__platzhalter {
	display: none;
}

/* Vorschau ist nur mit JavaScript klickbar (oeffnet den Dialog) */
.npuot-flipbook.is-enhanced .npuot-flipbook-card__vorschau {
	cursor: pointer;
}

.npuot-flipbook.is-enhanced .npuot-flipbook-card__vorschau:hover img,
.npuot-flipbook.is-enhanced .npuot-flipbook-card__vorschau:hover canvas {
	transform: translateY(-3px);
}

.npuot-flipbook-card__heading {
	margin: 0;
	font-size: inherit;
	line-height: inherit;
}

.npuot-flipbook-card__aktionen {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	justify-content: center;
	gap: 0.5rem;
	margin-top: auto;
	padding-top: 0.75rem;
}

.npuot-flipbook-card__meta {
	margin: 0.35rem 0 0;
	font-size: 0.8rem;
	color: var(--fb-muted);
}

/* --------------------------------------------------------------------------
   Buttons (Karten + Dialog)
   -------------------------------------------------------------------------- */

.npuot-flipbook .npuot-flipbook__btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 0.35rem;
	min-width: 40px;
	min-height: 40px;
	box-sizing: border-box;
	padding: 0.3rem 0.9rem;
	border: 1.5px solid var(--fb-accent);
	border-radius: 999px;
	background: transparent;
	color: var(--fb-accent);
	font: inherit;
	font-size: 0.875rem;
	font-weight: 600;
	line-height: 1.2;
	cursor: pointer;
}

.npuot-flipbook .npuot-flipbook__btn svg {
	width: 1.1em;
	height: 1.1em;
	flex: none;
}

.npuot-flipbook .npuot-flipbook__btn [aria-hidden="true"] {
	font-size: 1.2em;
	line-height: 1;
}

/* Download-Button ist ein Link: Theme-Linkfarben ueberschreiben */
.npuot-flipbook a.npuot-flipbook__btn,
.npuot-flipbook a.npuot-flipbook__btn:link,
.npuot-flipbook a.npuot-flipbook__btn:visited {
	color: var(--fb-accent);
	text-decoration: none;
}

.npuot-flipbook .npuot-flipbook__btn--primary {
	background: var(--fb-accent);
	color: #fff;
}

.npuot-flipbook .npuot-flipbook__btn:hover,
.npuot-flipbook a.npuot-flipbook__btn:hover {
	background: var(--fb-accent);
	color: #fff;
}

.npuot-flipbook .npuot-flipbook__btn--primary:hover {
	background: var(--fb-accent-hover);
	border-color: var(--fb-accent-hover);
}

.npuot-flipbook .npuot-flipbook__btn[hidden] {
	display: none;
}

.npuot-flipbook .npuot-flipbook__btn[aria-disabled="true"],
.npuot-flipbook .npuot-flipbook__btn[aria-disabled="true"]:hover {
	background: transparent;
	color: #767676;
	border-color: #c4c4c4;
	cursor: not-allowed;
}

.npuot-flipbook .npuot-flipbook__btn[data-action="first"],
.npuot-flipbook .npuot-flipbook__btn[data-action="last"] {
	padding-inline: 0.6rem;
}

.npuot-flipbook__btn:focus-visible,
.npuot-flipbook__goto-input:focus-visible,
.npuot-flipbook__download-link:focus-visible,
.npuot-flipbook__stage:focus-visible {
	outline: 3px solid var(--fb-focus);
	outline-offset: 3px;
}

/* Download als Textlink. Hohe Spezifitaet, weil Theme-Linkfarben sonst gewinnen */
.npuot-flipbook a.npuot-flipbook__download-link,
.npuot-flipbook a.npuot-flipbook__download-link:link,
.npuot-flipbook a.npuot-flipbook__download-link:visited {
	display: inline-flex;
	align-items: center;
	gap: 0.35rem;
	min-height: 40px;
	background: none;
	color: var(--fb-accent);
	font-size: 0.875rem;
	font-weight: 600;
	text-decoration: underline;
	text-underline-offset: 3px;
}

.npuot-flipbook a.npuot-flipbook__download-link:hover {
	color: var(--fb-accent-hover);
	text-decoration-thickness: 2px;
}

.npuot-flipbook__download-icon {
	width: 1.1em;
	height: 1.1em;
	flex: none;
}

/* --------------------------------------------------------------------------
   Dialog
   -------------------------------------------------------------------------- */

html.npuot-flipbook-open {
	overflow: hidden; /* Seite dahinter nicht mitscrollen */
}

.npuot-flipbook__dialog {
	width: min(1400px, 96vw);
	height: min(1000px, 94vh);
	max-width: none;
	max-height: none;
	padding: 0;
	border: 0;
	border-radius: 8px;
	background: #fff;
	color: var(--fb-text);
	box-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
}

.npuot-flipbook__dialog::backdrop {
	background: rgba(20, 18, 30, 0.78);
}

.npuot-flipbook__dialog-inner {
	display: flex;
	flex-direction: column;
	gap: 0.5rem;
	height: 100%;
	padding: 1rem 1.25rem;
	box-sizing: border-box;
}

.npuot-flipbook__dialog-head {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 1rem;
}

.npuot-flipbook__dialog-titel {
	margin: 0;
	font-size: 1.25rem;
	line-height: 1.25;
}

.npuot-flipbook__hint {
	margin: 0;
	font-size: 0.8rem;
	color: var(--fb-muted);
}

.npuot-flipbook__stage-wrap {
	position: relative;
	flex: 1 1 auto;
	min-height: 0;
	display: flex;
	align-items: center;
	justify-content: center;
	overflow: hidden;
}

.npuot-flipbook__stage {
	position: relative; /* Bezugspunkt fuer Seitenpositionen */
}

/* StPageFlip bringt fuer den Wrapper kein CSS mit (Tippfehler in der Bibliothek) */
.npuot-flipbook .stf__wrapper {
	position: relative;
	width: 100%;
	height: 100%; /* feste Groesse: Buehne gibt die Hoehe vor */
	box-sizing: border-box;
}

.npuot-flipbook__page {
	background: #fff;
	overflow: hidden;
	box-shadow: 0 0 0 1px var(--fb-line);
}

.npuot-flipbook__page canvas {
	display: block;
	width: 100%;
	height: 100%;
}

.npuot-flipbook__dialog.is-flip .npuot-flipbook__stage {
	cursor: grab;
}

/* Einzelne Titel-/Rueckseite im Doppelseiten-Modus mittig statt halbseitig */
.npuot-flipbook .stf__parent {
	transition: transform 0.3s ease;
}

.npuot-flipbook__dialog.is-single-right .stf__parent {
	transform: translateX(-25%);
}

.npuot-flipbook__dialog.is-single-left .stf__parent {
	transform: translateX(25%);
}

/* Seitenansicht: Scrollbereich fuellt den Dialog */
.npuot-flipbook__dialog.is-scroll .npuot-flipbook__stage {
	width: 100%;
	height: 100%;
	overflow-y: auto;
	overscroll-behavior: contain;
	padding: 0.25rem;
	box-sizing: border-box;
}

.npuot-flipbook__page--scroll {
	width: 100%;
	max-width: 900px;
	margin: 0 auto;
	box-shadow: 0 0 0 1px var(--fb-line), 0 1px 4px rgba(0, 0, 0, 0.12);
}

.npuot-flipbook__page--scroll + .npuot-flipbook__page--scroll {
	margin-top: 1rem;
}

/* Bedienleiste */
.npuot-flipbook__controls {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	justify-content: center;
	gap: 0.5rem;
	padding-top: 0.5rem;
	border-top: 1px solid var(--fb-line);
}

.npuot-flipbook__controls[hidden] {
	display: none;
}

.npuot-flipbook__status {
	margin: 0;
	min-width: 10ch;
	text-align: center;
	font-size: 0.875rem;
	font-weight: 600;
}

.npuot-flipbook__goto {
	display: flex;
	align-items: center;
	gap: 0.4rem;
}

.npuot-flipbook__goto label {
	font-size: 0.875rem;
}

.npuot-flipbook__goto-input {
	width: 4.5em;
	min-height: 40px;
	padding: 0.25rem 0.5rem;
	border: 1.5px solid var(--fb-muted);
	border-radius: 4px;
	background: #fff;
	color: var(--fb-text);
	font: inherit;
	box-sizing: border-box;
}

.npuot-flipbook__goto-input[aria-invalid="true"] {
	border-color: #b00020;
}

.npuot-flipbook__goto-error {
	flex-basis: 100%;
	margin: 0;
	text-align: center;
	color: #b00020;
	font-size: 0.875rem;
	font-weight: 600;
}

.npuot-flipbook__dialog-download {
	margin-left: 0.75rem;
}

.npuot-flipbook__message {
	margin: auto;
	padding: 1rem 1.25rem;
	color: var(--fb-text);
}

.npuot-flipbook__message.is-error {
	border-left: 4px solid #b00020;
	background: #f7f6f9;
}

/* Handy: Dialog bildschirmfuellend, Buttons nur mit Pfeil */
@media (max-width: 640px) {
	.npuot-flipbook__dialog {
		width: 100vw;
		height: 100vh;
		height: 100dvh;
		border-radius: 0;
	}

	.npuot-flipbook__dialog-inner {
		padding: 0.75rem;
	}

	.npuot-flipbook__controls .npuot-flipbook__btn-text {
		position: absolute;
		width: 1px;
		height: 1px;
		overflow: hidden;
		clip: rect(0, 0, 0, 0);
		white-space: nowrap;
	}

	.npuot-flipbook__status {
		order: -1;
		flex-basis: 100%;
	}

	.npuot-flipbook__dialog-download {
		flex-basis: 100%;
		justify-content: center;
		margin-left: 0;
	}
}

@media (prefers-reduced-motion: reduce) {
	.npuot-flipbook .stf__parent,
	.npuot-flipbook-card__vorschau img,
	.npuot-flipbook-card__canvas {
		transition: none;
	}
}

/* Windows-Kontrastmodus / erzwungene Farben */
@media (forced-colors: active) {
	.npuot-flipbook .npuot-flipbook__btn {
		border: 2px solid ButtonText;
	}

	.npuot-flipbook .npuot-flipbook__btn[aria-disabled="true"] {
		color: GrayText;
		border-color: GrayText;
	}

	.npuot-flipbook__dialog {
		border: 2px solid CanvasText;
	}

	.npuot-flipbook__btn:focus-visible,
	.npuot-flipbook__goto-input:focus-visible,
	.npuot-flipbook__download-link:focus-visible,
	.npuot-flipbook__stage:focus-visible {
		outline-color: Highlight;
	}
}