/* ============================================================
   Sfogliatore PDF — Viewer CSS
   whatstudio
   ============================================================ */

/* ── Variabili ─────────────────────────────────────────────── */
.sfpdf-container {
	--sfpdf-toolbar:      #1e293b;
	--sfpdf-toolbar-alt:  #162032;
	--sfpdf-stage-bg:     #e8edf3;
	--sfpdf-accent:       #3b82f6;
	--sfpdf-accent-dark:  #2563eb;
	--sfpdf-text:         #f1f5f9;
	--sfpdf-muted:        #94a3b8;
	--sfpdf-border:       rgba(255,255,255,0.07);
	--sfpdf-btn-hover:    rgba(255,255,255,0.10);
	--sfpdf-btn-active:   rgba(255,255,255,0.16);
	--sfpdf-radius:       12px;
	--sfpdf-shadow:       0 12px 48px rgba(0,0,0,0.18), 0 4px 16px rgba(0,0,0,0.10);

	font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
	border-radius: var(--sfpdf-radius);
	overflow: hidden;
	box-shadow: var(--sfpdf-shadow);
	width: 100%;
	display: flex;
	flex-direction: column;
	background: var(--sfpdf-toolbar);
	outline: none;
	box-sizing: border-box;
}

/* ── Titolo ─────────────────────────────────────────────────── */
.sfpdf-header {
	background: var(--sfpdf-toolbar-alt);
	padding: 10px 16px 8px;
	border-bottom: 1px solid var(--sfpdf-border);
}

.sfpdf-title {
	color: var(--sfpdf-text) !important;
	font-size: 14px !important;
	font-weight: 600 !important;
	margin: 0 0 8px !important;
	padding: 0 !important;
	line-height: 1.4 !important;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
	letter-spacing: 0.01em;
}

/* ── Toolbar (posizionata in basso) ─────────────────────────── */
.sfpdf-toolbar {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 6px 10px;
	background: var(--sfpdf-toolbar);
	border-top: 1px solid var(--sfpdf-border);
	gap: 6px;
	flex-shrink: 0;
}

.sfpdf-toolbar-group {
	display: flex;
	align-items: center;
	gap: 2px;
}

/* ── Bottoni ────────────────────────────────────────────────── */
.sfpdf-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 34px;
	height: 34px;
	padding: 0;
	border: none;
	border-radius: 7px;
	background: transparent;
	color: var(--sfpdf-text);
	cursor: pointer;
	transition: background 0.15s ease, color 0.15s ease, opacity 0.15s ease;
	text-decoration: none;
	flex-shrink: 0;
	-webkit-appearance: none;
	appearance: none;
}

.sfpdf-btn:hover {
	background: var(--sfpdf-btn-hover);
	color: #fff;
}

.sfpdf-btn:active {
	background: var(--sfpdf-btn-active);
}

.sfpdf-btn:disabled,
.sfpdf-btn[disabled] {
	opacity: 0.28;
	cursor: not-allowed;
	pointer-events: none;
}

.sfpdf-btn:focus-visible {
	outline: 2px solid var(--sfpdf-accent);
	outline-offset: 1px;
}

.sfpdf-icon {
	width: 18px;
	height: 18px;
	flex-shrink: 0;
}

/* ── Contatore pagine ───────────────────────────────────────── */
.sfpdf-page-counter {
	display: flex;
	align-items: center;
	gap: 5px;
	color: var(--sfpdf-text);
	font-size: 13px;
	padding: 0 4px;
}

.sfpdf-page-input {
	width: 42px;
	height: 28px;
	padding: 0 6px;
	background: rgba(255,255,255,0.08);
	border: 1px solid rgba(255,255,255,0.15);
	border-radius: 5px;
	color: var(--sfpdf-text);
	font-size: 13px;
	text-align: center;
	-moz-appearance: textfield;
	outline: none;
	box-sizing: border-box;
	transition: border-color 0.15s, background 0.15s;
}

.sfpdf-page-input::-webkit-inner-spin-button,
.sfpdf-page-input::-webkit-outer-spin-button {
	-webkit-appearance: none;
}

.sfpdf-page-input:focus {
	border-color: var(--sfpdf-accent);
	background: rgba(59,130,246,0.12);
}

.sfpdf-page-sep {
	color: var(--sfpdf-muted);
}

.sfpdf-page-total {
	min-width: 18px;
	color: var(--sfpdf-muted);
}

/* ── Livello zoom ───────────────────────────────────────────── */
.sfpdf-zoom-level {
	font-size: 12px;
	color: var(--sfpdf-muted);
	min-width: 40px;
	text-align: center;
	padding: 0 2px;
}

/* ── Stage (area pagina) ────────────────────────────────────── */
.sfpdf-stage {
	flex: 1;
	min-height: 420px;
	background: var(--sfpdf-stage-bg);
	display: flex;
	align-items: center;
	justify-content: center;
	overflow: hidden;
	position: relative;
	padding: 20px;
	box-sizing: border-box;
}

/* ── Canvas ─────────────────────────────────────────────────── */
.sfpdf-canvas {
	display: block;
	max-width: 100%;
	height: auto;
	box-shadow: 0 4px 24px rgba(0,0,0,0.18), 0 1px 6px rgba(0,0,0,0.10);
	background: #fff;
	position: relative;
	z-index: 1;
}

/* ── Loading ────────────────────────────────────────────────── */
.sfpdf-loading {
	position: absolute;
	inset: 0;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 14px;
	background: var(--sfpdf-stage-bg);
	z-index: 10;
}

.sfpdf-spinner {
	width: 42px;
	height: 42px;
	border: 3px solid rgba(0,0,0,0.08);
	border-top-color: var(--sfpdf-accent);
	border-radius: 50%;
	animation: sfpdf-spin 0.75s linear infinite;
}

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

.sfpdf-loading-text {
	font-size: 13px;
	color: #5a6880;
	font-weight: 500;
}

.sfpdf-progress-track {
	width: 180px;
	height: 3px;
	background: rgba(0,0,0,0.10);
	border-radius: 2px;
	overflow: hidden;
}

.sfpdf-progress-fill {
	height: 100%;
	background: var(--sfpdf-accent);
	border-radius: 2px;
	width: 0%;
	transition: width 0.2s ease;
}

/* ── Errore ─────────────────────────────────────────────────── */
.sfpdf-error {
	position: absolute;
	inset: 0;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 10px;
	background: var(--sfpdf-stage-bg);
	text-align: center;
	color: #5a6880;
	z-index: 10;
}

.sfpdf-error[hidden] {
	display: none;
}

.sfpdf-icon-error {
	width: 48px;
	height: 48px;
	color: #f87171;
}

.sfpdf-error p {
	margin: 0;
	font-size: 15px;
	font-weight: 600;
	color: #374151;
}

.sfpdf-error small {
	font-size: 12px;
	color: #8c9ab0;
}

/* ── Frecce laterali ────────────────────────────────────────── */
.sfpdf-side-arrow {
	position: absolute;
	top: 50%;
	transform: translateY(-50%);
	z-index: 20;
	width: 44px;
	height: 70px;
	padding: 0;
	border: none;
	border-radius: 8px;
	background: rgba(0, 0, 0, 0.32);
	color: #fff;
	cursor: pointer;
	display: flex;
	align-items: center;
	justify-content: center;
	transition: background 0.18s ease, opacity 0.18s ease, transform 0.18s ease;
	backdrop-filter: blur(4px);
	-webkit-backdrop-filter: blur(4px);
	-webkit-appearance: none;
	appearance: none;
}

.sfpdf-side-arrow:hover {
	background: rgba(0, 0, 0, 0.58);
	transform: translateY(-50%) scale(1.06);
}

.sfpdf-side-arrow:active {
	transform: translateY(-50%) scale(0.97);
}

.sfpdf-side-arrow:disabled,
.sfpdf-side-arrow[disabled] {
	opacity: 0;
	pointer-events: none;
}

.sfpdf-side-prev { left: 10px; }
.sfpdf-side-next { right: 10px; }

/* ── Fullscreen ─────────────────────────────────────────────── */
.sfpdf-container:fullscreen {
	border-radius: 0;
	max-height: 100dvh;
	height: 100dvh;
}

.sfpdf-container:fullscreen .sfpdf-stage {
	flex: 1;
	overflow: auto;
}

.sfpdf-container:-webkit-full-screen {
	border-radius: 0;
}

.sfpdf-container:fullscreen .sfpdf-icon-fs      { display: none; }
.sfpdf-container:fullscreen .sfpdf-icon-exit-fs { display: inline !important; }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 520px) {
	.sfpdf-toolbar {
		flex-wrap: wrap;
		padding: 6px 8px;
	}

	.sfpdf-toolbar-center {
		order: 3;
		width: 100%;
		justify-content: center;
		padding: 4px 0 2px;
		border-top: 1px solid var(--sfpdf-border);
	}

	.sfpdf-zoom-level {
		display: none;
	}

	.sfpdf-stage {
		min-height: 320px;
		padding: 12px;
	}
}