.pb-pdf-viewer {
	--pb-pdf-bg: #3a3a3a;
	--pb-pdf-toolbar-bg: #2b2b2b;
	--pb-pdf-btn-bg: #4a4a4a;
	--pb-pdf-btn-hover: #5c5c5c;
	--pb-pdf-text: #f0f0f0;
	--pb-pdf-border: #555;
	--pb-pdf-accent: #c8a84b;

	box-sizing: border-box;
	max-width: 100%;
	margin: 1.5rem 0;
	font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
	color: var(--pb-pdf-text);
	background: var(--pb-pdf-bg);
	border: 1px solid var(--pb-pdf-border);
	border-radius: 4px;
	overflow: hidden;
}

.pb-pdf-viewer *,
.pb-pdf-viewer *::before,
.pb-pdf-viewer *::after {
	box-sizing: border-box;
}

.pb-pdf-toolbar {
	display: flex;
	align-items: center;
	gap: 0.35rem;
	padding: 0.5rem 0.75rem;
	background: var(--pb-pdf-toolbar-bg);
	border-bottom: 1px solid var(--pb-pdf-border);
}

.pb-pdf-toolbar-spacer {
	flex: 1;
}

.pb-pdf-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: 2.25rem;
	height: 2.25rem;
	padding: 0 0.5rem;
	border: 1px solid var(--pb-pdf-border);
	border-radius: 3px;
	background: var(--pb-pdf-btn-bg);
	color: var(--pb-pdf-text);
	font-size: 1.25rem;
	line-height: 1;
	cursor: pointer;
	transition: background 0.15s ease;
}

.pb-pdf-btn:hover:not(:disabled) {
	background: var(--pb-pdf-btn-hover);
}

.pb-pdf-btn:disabled {
	opacity: 0.35;
	cursor: not-allowed;
}

.pb-pdf-page-info {
	display: inline-flex;
	align-items: center;
	gap: 0.25rem;
	margin: 0 0.25rem;
	font-size: 0.9rem;
	white-space: nowrap;
}

.pb-pdf-page-input {
	width: 3.5rem;
	padding: 0.3rem 0.4rem;
	border: 1px solid var(--pb-pdf-border);
	border-radius: 3px;
	background: #1e1e1e;
	color: var(--pb-pdf-text);
	font-size: 0.9rem;
	text-align: center;
	-moz-appearance: textfield;
}

.pb-pdf-page-input::-webkit-outer-spin-button,
.pb-pdf-page-input::-webkit-inner-spin-button {
	-webkit-appearance: none;
	margin: 0;
}

.pb-pdf-page-sep {
	opacity: 0.6;
}

.pb-pdf-canvas-wrap {
	position: relative;
	display: flex;
	align-items: flex-start;
	justify-content: center;
	min-height: var(--pb-pdf-height, 80vh);
	max-height: var(--pb-pdf-height, 80vh);
	overflow: auto;
	padding: 1rem;
	background: var(--pb-pdf-bg);
}

.pb-pdf-stage {
	position: relative;
	display: inline-block;
	min-height: 120px;
}

.pb-pdf-page {
	position: relative;
	transition:
		transform 0.42s cubic-bezier(0.4, 0, 0.2, 1),
		opacity 0.42s cubic-bezier(0.4, 0, 0.2, 1),
		filter 0.42s cubic-bezier(0.4, 0, 0.2, 1);
	will-change: transform, opacity;
}

.pb-pdf-page[hidden] {
	display: none;
}

.pb-pdf-page--incoming {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	z-index: 2;
}

.pb-pdf-page--outgoing {
	z-index: 1;
}

/* Página siguiente: entra desde la derecha, la actual sale a la izquierda */
.pb-pdf-stage--forward .pb-pdf-page--outgoing {
	transform: translateX(-18%) scale(0.96);
	opacity: 0;
	filter: brightness(0.85);
}

.pb-pdf-stage--forward .pb-pdf-page--incoming {
	transform: translateX(0) scale(1);
	opacity: 1;
	filter: brightness(1);
	animation: pb-pdf-enter-forward 0.42s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes pb-pdf-enter-forward {
	from {
		transform: translateX(18%) scale(0.96);
		opacity: 0;
		filter: brightness(1.08);
	}
	to {
		transform: translateX(0) scale(1);
		opacity: 1;
		filter: brightness(1);
	}
}

/* Página anterior: entra desde la izquierda, la actual sale a la derecha */
.pb-pdf-stage--back .pb-pdf-page--outgoing {
	transform: translateX(18%) scale(0.96);
	opacity: 0;
	filter: brightness(0.85);
}

.pb-pdf-stage--back .pb-pdf-page--incoming {
	transform: translateX(0) scale(1);
	opacity: 1;
	filter: brightness(1);
	animation: pb-pdf-enter-back 0.42s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes pb-pdf-enter-back {
	from {
		transform: translateX(-18%) scale(0.96);
		opacity: 0;
		filter: brightness(1.08);
	}
	to {
		transform: translateX(0) scale(1);
		opacity: 1;
		filter: brightness(1);
	}
}

.pb-pdf-canvas {
	display: block;
	box-shadow: 0 2px 12px rgba(0, 0, 0, 0.45);
}

.pb-pdf-loading {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 0.75rem;
	position: absolute;
	inset: 0;
	z-index: 2;
	background: var(--pb-pdf-bg);
}

.pb-pdf-loading[hidden] {
	display: none;
}

.pb-pdf-spinner {
	width: 2.5rem;
	height: 2.5rem;
	border: 3px solid var(--pb-pdf-border);
	border-top-color: var(--pb-pdf-accent);
	border-radius: 50%;
	animation: pb-pdf-spin 0.8s linear infinite;
}

.pb-pdf-loading-text {
	font-size: 0.95rem;
	opacity: 0.85;
}

.pb-pdf-loading-progress {
	font-size: 0.85rem;
	font-variant-numeric: tabular-nums;
	color: var(--pb-pdf-accent);
}

.pb-pdf-error,
.pb-pdf-error-msg {
	color: #e07070;
	font-size: 0.95rem;
}

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

@media (max-width: 480px) {
	.pb-pdf-toolbar {
		flex-wrap: wrap;
	}

	.pb-pdf-toolbar-spacer {
		display: none;
	}

	.pb-pdf-canvas-wrap {
		min-height: 60vh;
		max-height: 60vh;
	}
}

@media (prefers-reduced-motion: reduce) {
	.pb-pdf-page {
		transition: none;
		animation: none !important;
	}

	.pb-pdf-stage--forward .pb-pdf-page--outgoing,
	.pb-pdf-stage--back .pb-pdf-page--outgoing {
		transform: none;
		opacity: 1;
		filter: none;
	}
}