/* Sfogliabili – stili del visualizzatore premium (stile FlipHTML5). */

.sfogliabili-wrap {
	--sfogliabili-bg: #2a2f3a;
	--sfogliabili-max-w: 900px;
	--sf-accent: #2b6cff;
	--sf-glass: rgba(20, 24, 33, 0.72);
	--sf-glass-brd: rgba(255, 255, 255, 0.12);
	--sf-ink: #eef1f6;
	position: relative;
	box-sizing: border-box;
	width: 100%;
	max-width: var(--sfogliabili-max-w);
	margin: 1.6em auto;
	outline: none;
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* Larghezza 100% del contenitore. */
.sfogliabili-wrap.is-fullwidth { max-width: 100%; }

/* Oxygen: i contenitori sono flex in colonna con align-items: flex-start, quindi
   l'elemento Shortcode si restringe al contenuto e il 100% non ha effetto. */
.ct-shortcode:has(> .sfogliabili-wrap),
.oxy-shortcode:has(> .sfogliabili-wrap),
.ct-text-block:has(.sfogliabili-wrap),
.oxy-rich-text:has(.sfogliabili-wrap) {
	width: 100%;
	align-self: stretch;
}
/* Shortcode nel contenuto dell'articolo: Oxygen lo avvolge in uno <span> inline. */
.ct-span:has(> .sfogliabili-wrap) {
	display: block;
	width: 100%;
}

/* Stage immersivo con profondità (gradiente radiale sul colore scelto). */
.sfogliabili-stage {
	position: relative;
	background:
		radial-gradient( ellipse at 50% 32%, rgba(255, 255, 255, 0.10), transparent 60% ),
		radial-gradient( ellipse at 50% 120%, rgba(0, 0, 0, 0.55), transparent 70% ),
		var(--sfogliabili-bg);
	border-radius: 12px;
	padding: 40px 20px 48px;
	min-height: 320px;
	display: flex;
	align-items: center;
	justify-content: center;
	overflow: hidden;
	box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

/* Ombra ambientale sotto il libro. */
.sfogliabili-stage.is-ready::after {
	content: "";
	position: absolute;
	left: 50%;
	bottom: 26px;
	width: 60%;
	height: 26px;
	transform: translateX(-50%);
	background: radial-gradient( ellipse, rgba(0, 0, 0, 0.45), transparent 70% );
	filter: blur(6px);
	pointer-events: none;
	z-index: 0;
}

.sfogliabili-book {
	position: relative;
	z-index: 1;
	width: 100%;
	max-width: 100%;
	min-width: 0;
	margin: 0 auto;
	transition: transform 0.25s ease;
	touch-action: pan-y;
	filter: drop-shadow(0 18px 40px rgba(0, 0, 0, 0.45));
}

.sfogliabili-stage.is-zoomed { cursor: grab; }
.sfogliabili-stage.is-panning { cursor: grabbing; }
.sfogliabili-stage.is-zoomed .sfogliabili-book { transition: none; }

.sfogliabili-book .stf__parent { margin: 0 auto; }

/* Pagine del flip in modalità HTML (nitide a risoluzione nativa). */
.sfogliabili-page {
	background: #fff;
	overflow: hidden;
	position: relative;
}
.sfogliabili-page img {
	width: 100%;
	height: 100%;
	display: block;
	object-fit: fill;
	pointer-events: none;
}
/* Nasconde l'<img> vuoto finché la pagina non è renderizzata (niente icona rotta). */
.sfogliabili-page.is-loading img,
.sf-slide.is-loading img { visibility: hidden; }

/* Spinner sulle pagine/slide non ancora renderizzate (caricamento progressivo). */
.sfogliabili-page-spin {
	position: absolute;
	top: 50%;
	left: 50%;
	width: 26px;
	height: 26px;
	margin: -13px 0 0 -13px;
	border: 3px solid rgba(0, 0, 0, 0.12);
	border-top-color: var(--sf-accent);
	border-radius: 50%;
	animation: sfogliabili-spin 0.8s linear infinite;
	pointer-events: none;
}
.sfogliabili-page:not(.is-loading) .sfogliabili-page-spin,
.sf-slide:not(.is-loading) .sfogliabili-page-spin { display: none; }
.sf-slide { position: relative; }

/* Badge "rendering in corso" (x/N pagine pronte). */
.sfogliabili-rendering {
	position: absolute;
	top: 12px;
	right: 12px;
	z-index: 8;
	display: flex;
	align-items: center;
	gap: 8px;
	padding: 6px 12px 6px 8px;
	background: var(--sf-glass);
	border: 1px solid var(--sf-glass-brd);
	border-radius: 20px;
	color: var(--sf-ink);
	font-size: 12px;
	backdrop-filter: blur(10px);
	-webkit-backdrop-filter: blur(10px);
}
.sfogliabili-rendering .sfogliabili-spinner {
	width: 16px;
	height: 16px;
	border-width: 2px;
}

/* Pager semplice: scorrimento / dissolvenza (pagina singola). */
.sf-simple {
	position: relative;
	width: 100%;
	margin: 0 auto;
	overflow: hidden;
	border-radius: 4px;
	background: #fff;
}
.sf-simple-track {
	display: flex;
	height: 100%;
	transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.sf-simple-fade .sf-simple-track { display: block; transition: none; }
.sf-slide {
	flex: 0 0 100%;
	width: 100%;
	height: 100%;
	line-height: 0;
}
.sf-simple-fade .sf-slide {
	position: absolute;
	inset: 0;
	opacity: 0;
	transition: opacity 0.5s ease;
}
.sf-simple-fade .sf-slide.is-active { opacity: 1; }
.sf-slide img { width: 100%; height: 100%; object-fit: contain; display: block; }

/* -------------------------- Caricamento --------------------------- */
.sfogliabili-loading {
	position: absolute;
	inset: 0;
	z-index: 5;
	display: flex;
	flex-direction: column;
	gap: 14px;
	align-items: center;
	justify-content: center;
	color: var(--sf-ink);
	font-size: 14px;
	text-align: center;
	padding: 20px;
}

.sfogliabili-spinner {
	width: 40px;
	height: 40px;
	border: 3px solid rgba(255, 255, 255, 0.18);
	border-top-color: var(--sf-accent);
	border-radius: 50%;
	animation: sfogliabili-spin 0.8s linear infinite;
}

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

.sfogliabili-progress {
	width: 200px;
	max-width: 60%;
	height: 5px;
	background: rgba(255, 255, 255, 0.15);
	border-radius: 3px;
	overflow: hidden;
}

.sfogliabili-progress-bar {
	display: block;
	height: 100%;
	width: 0;
	background: var(--sf-accent);
	border-radius: 3px;
	transition: width 0.2s ease;
}

.sfogliabili-percent { font-size: 12px; opacity: 0.8; }

/* --------------------------- Toolbar (SOTTO il documento) --------- */
.sfogliabili-toolbar {
	position: relative;
	z-index: 6;
	display: flex;
	flex-wrap: wrap;
	gap: 4px;
	align-items: center;
	justify-content: center;
	margin: 10px auto 0;
	padding: 6px;
	width: fit-content;
	max-width: 100%;
	background: var(--sf-glass);
	border: 1px solid var(--sf-glass-brd);
	border-radius: 14px;
	backdrop-filter: blur(14px) saturate(1.2);
	-webkit-backdrop-filter: blur(14px) saturate(1.2);
	box-shadow: 0 8px 22px rgba(0, 0, 0, 0.22);
	transition: opacity 0.3s ease, transform 0.3s ease;
}

.sfogliabili-group {
	display: flex;
	align-items: center;
	gap: 2px;
	padding: 0 4px;
	border-right: 1px solid rgba(255, 255, 255, 0.10);
}
.sfogliabili-group:last-child { border-right: 0; }

.sfogliabili-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 6px;
	width: 38px;
	height: 38px;
	padding: 0;
	background: transparent;
	border: 0;
	border-radius: 10px;
	color: var(--sf-ink);
	cursor: pointer;
	transition: background 0.15s ease, color 0.15s ease, transform 0.1s ease;
}

.sfogliabili-btn:hover,
.sfogliabili-btn:focus-visible {
	background: var(--sf-accent);
	color: #fff;
	outline: none;
}
.sfogliabili-btn:active { transform: scale(0.92); }
.sfogliabili-btn.is-active { background: var(--sf-accent); color: #fff; }

.sfogliabili-btn svg { width: 20px; height: 20px; fill: currentColor; }

.sfogliabili-btn-text { width: auto; padding: 0 14px; font-size: 14px; }

/* Indicatore pagina con input */
.sfogliabili-indicator {
	display: flex;
	align-items: center;
	gap: 5px;
	padding: 0 8px;
	color: var(--sf-ink);
	font-size: 13px;
	white-space: nowrap;
}

.sfogliabili-page-input {
	width: 42px;
	height: 28px;
	text-align: center;
	background: rgba(255, 255, 255, 0.10);
	border: 1px solid rgba(255, 255, 255, 0.18);
	border-radius: 7px;
	color: var(--sf-ink);
	font-size: 13px;
}
.sfogliabili-page-input:focus {
	outline: none;
	border-color: var(--sf-accent);
}
.sfogliabili-sep { opacity: 0.5; }
.sfogliabili-page-total { opacity: 0.85; }

/* ----------------------- Pannello miniature ----------------------- */
.sfogliabili-thumbs {
	position: absolute;
	top: 0;
	left: 0;
	bottom: 0;
	z-index: 7;
	width: 220px;
	max-width: 80%;
	background: var(--sf-glass);
	border-right: 1px solid var(--sf-glass-brd);
	backdrop-filter: blur(16px);
	-webkit-backdrop-filter: blur(16px);
	transform: translateX(-105%);
	transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
	display: flex;
	flex-direction: column;
}
.sfogliabili-stage.thumbs-open .sfogliabili-thumbs { transform: translateX(0); }

.sfogliabili-thumbs-head {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 8px 8px 8px 14px;
	color: var(--sf-ink);
	font-size: 14px;
	font-weight: 600;
	border-bottom: 1px solid rgba(255, 255, 255, 0.10);
}

.sfogliabili-thumbs-grid {
	flex: 1;
	overflow-y: auto;
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 10px;
	padding: 12px;
}

.sfogliabili-thumb {
	display: block;
	padding: 0;
	background: transparent;
	border: 2px solid transparent;
	border-radius: 6px;
	cursor: pointer;
	position: relative;
	line-height: 0;
	transition: border-color 0.15s ease, transform 0.15s ease;
}
.sfogliabili-thumb img {
	width: 100%;
	height: auto;
	border-radius: 4px;
	box-shadow: 0 3px 10px rgba(0, 0, 0, 0.4);
}
.sfogliabili-thumb span {
	position: absolute;
	right: 4px;
	bottom: 4px;
	background: rgba(0, 0, 0, 0.65);
	color: #fff;
	font-size: 10px;
	line-height: 1;
	padding: 3px 5px;
	border-radius: 4px;
}
.sfogliabili-thumb:hover { transform: translateY(-2px); }
.sfogliabili-thumb.is-current { border-color: var(--sf-accent); }

/* ---------------------- Vista zoom (alta risoluzione) ------------- */
.sfogliabili-zoom {
	position: absolute;
	inset: 0;
	z-index: 30;
	background: rgba(18, 21, 28, 0.97);
	user-select: none;
	-webkit-user-select: none;
}
.sfogliabili-zoom-scroll {
	position: absolute;
	inset: 0;
	overflow: auto;
	-webkit-overflow-scrolling: touch;
	cursor: grab;
	touch-action: pan-x pan-y;
}
.sfogliabili-zoom-scroll.is-grabbing { cursor: grabbing; }
.sfogliabili-zoom-holder {
	display: block;
	width: fit-content;
	min-width: 100%;
	min-height: 100%;
	box-sizing: border-box;
	text-align: center;
}
.sfogliabili-zoom-holder canvas {
	display: block;
	margin: 16px auto;
	background: #fff;
	height: auto;
	max-width: none;
	box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
}
.sfogliabili-zoom-holder .sfogliabili-spinner { display: inline-block; margin: 44px auto; }
.sfogliabili-zoom-bar {
	position: absolute;
	bottom: 16px;
	left: 50%;
	transform: translateX(-50%);
	z-index: 31;
	display: flex;
	align-items: center;
	gap: 4px;
	padding: 6px;
	background: var(--sf-glass);
	border: 1px solid var(--sf-glass-brd);
	border-radius: 14px;
	backdrop-filter: blur(14px) saturate(1.2);
	-webkit-backdrop-filter: blur(14px) saturate(1.2);
	box-shadow: 0 8px 22px rgba(0, 0, 0, 0.35);
}
.sfogliabili-zoom-level {
	min-width: 52px;
	text-align: center;
	color: var(--sf-ink);
	font-size: 13px;
}

/* --------------------------- Fullscreen --------------------------- */
.sfogliabili-wrap:fullscreen,
.sfogliabili-wrap:-webkit-full-screen {
	max-width: none;
	width: 100%;
	height: 100%;
	margin: 0;
	display: flex;
	flex-direction: column;
	background: var(--sfogliabili-bg);
}
.sfogliabili-wrap.is-fullscreen .sfogliabili-stage {
	flex: 1;
	min-height: 0;
	border-radius: 0;
}
.sfogliabili-wrap.is-fullscreen .sfogliabili-toolbar {
	margin: 10px auto;
}

/* --------------------------- Avvisi ------------------------------- */
.sfogliabili-notice {
	padding: 12px 16px;
	background: #fff8e5;
	border: 1px solid #f0d68a;
	border-radius: 8px;
	color: #7a5c00;
	font-size: 14px;
	text-align: center;
}

/* ----------------------- Modale condivisione ---------------------- */
.sfogliabili-modal {
	position: absolute;
	inset: 0;
	z-index: 20;
	background: rgba(0, 0, 0, 0.6);
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 20px;
	backdrop-filter: blur(4px);
	-webkit-backdrop-filter: blur(4px);
}

.sfogliabili-modal-box {
	background: #ffffff;
	color: #1a1a1a;
	border-radius: 14px;
	width: 100%;
	max-width: 420px;
	padding: 20px;
	box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.sfogliabili-modal-head {
	display: flex;
	align-items: center;
	justify-content: space-between;
	margin-bottom: 16px;
	font-size: 17px;
}
.sfogliabili-modal-box .sfogliabili-btn { color: #1a1a1a; }
.sfogliabili-modal-box .sfogliabili-btn:hover { color: #fff; }

.sfogliabili-share-links {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(88px, 1fr));
	gap: 8px;
	margin-bottom: 16px;
}

.sfogliabili-share-link {
	display: block;
	text-align: center;
	padding: 11px 6px;
	background: #f2f4f7;
	border-radius: 8px;
	color: #222;
	text-decoration: none;
	font-size: 14px;
	font-weight: 500;
	transition: background 0.15s ease, color 0.15s ease;
}
.sfogliabili-share-link:hover { background: var(--sf-accent); color: #fff; }

.sfogliabili-copy-row { display: flex; gap: 8px; }
.sfogliabili-copy-row input {
	flex: 1;
	min-width: 0;
	padding: 10px 12px;
	border: 1px solid #ddd;
	border-radius: 8px;
	font-size: 13px;
}
.sfogliabili-copy-row .sfogliabili-btn {
	background: var(--sf-accent);
	color: #fff;
	border-radius: 8px;
}

/* --------------------------- Responsive --------------------------- */
@media (max-width: 700px) {
	.sfogliabili-stage { padding: 24px 10px 44px; }
	.sfogliabili-toolbar { gap: 2px; padding: 4px; border-radius: 12px; }
	.sfogliabili-btn { width: 34px; height: 34px; }
	.sfogliabili-group { padding: 0 2px; }
	.sfogliabili-group:nth-child(4) { border-right: 0; }
}