/* PDFAnimator3D Viewer */
.pdfa3d-root {
	--pdfa3d-ui: #2c2c2c;
	--pdfa3d-bg: #0d0f12;
	--pdfa3d-accent: #ffffff;
	position: relative;
	display: flex;
	flex-direction: column;
	width: 100%;
	min-height: 320px;
	background:
		radial-gradient(ellipse at 50% 44%, rgba(255,255,255,0.075) 0%, rgba(255,255,255,0.018) 42%, rgba(0,0,0,0.22) 100%),
		var(--pdfa3d-bg);
	overflow: hidden;
	font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
	color: var(--pdfa3d-accent);
	isolation: isolate;
}
.pdfa3d-root:fullscreen,
.pdfa3d-root:-webkit-full-screen {
	width: 100vw !important;
	height: 100vh !important;
}
.pdfa3d-stage {
	position: relative;
	flex: 1;
	min-height: 0;
	z-index: 1;
}
.pdfa3d-viewport {
	position: absolute;
	inset: 0;
}
.pdfa3d-canvas {
	display: block;
	width: 100%;
	height: 100%;
	touch-action: none;
	cursor: grab;
	filter: drop-shadow(0 22px 30px rgba(0,0,0,0.26));
}
.pdfa3d-canvas:active { cursor: grabbing; }

.pdfa3d-loader {
	position: absolute;
	inset: 0;
	display: flex;
	align-items: center;
	justify-content: center;
	background: rgba(0,0,0,0.25);
	z-index: 5;
	pointer-events: none;
}
.pdfa3d-loader[hidden] { display: none !important; }
.pdfa3d-loader span {
	padding: 10px 16px;
	background: rgba(0,0,0,0.55);
	border-radius: 4px;
	font-size: 13px;
}

.pdfa3d-nav {
	position: absolute;
	top: 50%;
	transform: translateY(-50%);
	z-index: 4;
	width: 46px;
	height: 46px;
	border: 1px solid rgba(255,255,255,0.18);
	background: rgba(13,15,18,0.48);
	color: #fff;
	cursor: pointer;
	display: flex;
	align-items: center;
	justify-content: center;
	opacity: 0.22;
	backdrop-filter: blur(12px);
	-webkit-backdrop-filter: blur(12px);
	box-shadow: 0 8px 24px rgba(0,0,0,0.18);
	transition: opacity 0.22s, background 0.22s, transform 0.22s;
}
.pdfa3d-root:hover .pdfa3d-nav,
.pdfa3d-nav:focus-visible { opacity: 0.92; }
.pdfa3d-nav:hover { opacity: 1; background: rgba(13,15,18,0.78); transform: translateY(-50%) scale(1.04); }
.pdfa3d-nav-prev { left: 16px; border-radius: 999px; }
.pdfa3d-nav-next { right: 16px; border-radius: 999px; }

.pdfa3d-text-layer,
.pdfa3d-link-layer {
	position: absolute;
	inset: 12% 18% 18% 18%;
	z-index: 3;
	pointer-events: none;
	overflow: hidden;
}
.pdfa3d-text-box {
	position: absolute;
	width: 1px;
	height: 1px;
	opacity: 0.01;
	overflow: hidden;
	user-select: text;
	pointer-events: auto;
	white-space: pre-wrap;
	font-size: 12px;
	color: transparent;
}
.pdfa3d-root.pdfa3d-select-mode .pdfa3d-text-box {
	inset: 0;
	width: auto;
	height: auto;
	opacity: 1;
	color: rgba(0,0,0,0.01);
	background: transparent;
}
.pdfa3d-page-link {
	position: absolute;
	pointer-events: auto;
	background: rgba(0, 120, 255, 0.08);
	border: 1px solid transparent;
}
.pdfa3d-page-link:hover {
	border-color: rgba(0, 120, 255, 0.45);
}

.pdfa3d-toolbar {
	position: absolute;
	left: 14px;
	right: 14px;
	bottom: 12px;
	z-index: 6;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 12px;
	min-height: 40px;
	padding: 0;
	background: transparent;
	color: var(--pdfa3d-accent);
	pointer-events: none;
}
.pdfa3d-page-indicator {
	font-size: 12px;
	font-variant-numeric: tabular-nums;
	opacity: 0.88;
	white-space: nowrap;
	padding: 8px 11px;
	border: 1px solid rgba(255,255,255,0.12);
	border-radius: 999px;
	background: rgba(13,15,18,0.62);
	background: color-mix(in srgb, var(--pdfa3d-ui) 72%, transparent);
	backdrop-filter: blur(14px);
	-webkit-backdrop-filter: blur(14px);
	pointer-events: auto;
}
.pdfa3d-toolbar-actions {
	display: flex;
	align-items: center;
	gap: 1px;
	padding: 3px;
	border: 1px solid rgba(255,255,255,0.12);
	border-radius: 12px;
	background: rgba(13,15,18,0.62);
	background: color-mix(in srgb, var(--pdfa3d-ui) 72%, transparent);
	backdrop-filter: blur(14px);
	-webkit-backdrop-filter: blur(14px);
	box-shadow: 0 8px 28px rgba(0,0,0,0.2);
	pointer-events: auto;
}
.pdfa3d-toolbar-actions button {
	appearance: none;
	border: 0;
	background: transparent;
	color: inherit;
	width: 34px;
	height: 34px;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	cursor: pointer;
	border-radius: 8px;
	opacity: 0.82;
	transition: background 0.18s, opacity 0.18s, transform 0.18s;
}
.pdfa3d-toolbar-actions button:hover {
	background: rgba(255,255,255,0.1);
	opacity: 1;
	transform: translateY(-1px);
}

.pdfa3d-skin-light {
	--pdfa3d-ui: #f2f2f2;
	--pdfa3d-bg: #d8d8d8;
	--pdfa3d-accent: #222;
}
.pdfa3d-skin-light .pdfa3d-toolbar-actions button:hover {
	background: rgba(0,0,0,0.08);
}
.pdfa3d-skin-light .pdfa3d-nav {
	background: rgba(255,255,255,0.7);
	color: #222;
}
.pdfa3d-skin-light .pdfa3d-page-indicator,
.pdfa3d-skin-light .pdfa3d-toolbar-actions {
	background: rgba(248,248,248,0.72);
	border-color: rgba(0,0,0,0.1);
}

.pdfa3d-panel {
	position: absolute;
	top: 0;
	right: 0;
	bottom: 0;
	width: min(320px, 92%);
	background: rgba(24,24,24,0.96);
	z-index: 8;
	display: flex;
	flex-direction: column;
	box-shadow: -8px 0 24px rgba(0,0,0,0.25);
}
.pdfa3d-panel[hidden] { display: none !important; }
.pdfa3d-skin-light .pdfa3d-panel {
	background: rgba(250,250,250,0.98);
	color: #222;
}
.pdfa3d-panel-head {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 10px 12px;
	border-bottom: 1px solid rgba(255,255,255,0.1);
}
.pdfa3d-panel-head button {
	border: 0;
	background: transparent;
	color: inherit;
	cursor: pointer;
}
.pdfa3d-thumbs-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 8px;
	padding: 12px;
	overflow: auto;
}
.pdfa3d-thumb {
	aspect-ratio: 3/4;
	border: 1px solid rgba(255,255,255,0.15);
	background: #444 center/cover no-repeat;
	color: #fff;
	cursor: pointer;
}
.pdfa3d-toc-list,
.pdfa3d-search-results {
	list-style: none;
	margin: 0;
	padding: 8px;
	overflow: auto;
}
.pdfa3d-toc-list button,
.pdfa3d-search-results button {
	width: 100%;
	text-align: left;
	border: 0;
	background: transparent;
	color: inherit;
	padding: 8px;
	cursor: pointer;
	display: flex;
	justify-content: space-between;
	gap: 8px;
	border-radius: 4px;
	font-size: 13px;
}
.pdfa3d-toc-list button:hover,
.pdfa3d-search-results button:hover {
	background: rgba(255,255,255,0.08);
}
.pdfa3d-muted { opacity: 0.55; padding: 12px; font-size: 13px; }
.pdfa3d-search-form {
	display: flex;
	gap: 6px;
	padding: 10px 12px;
}
.pdfa3d-search-input {
	flex: 1;
	border: 1px solid rgba(255,255,255,0.2);
	background: rgba(0,0,0,0.25);
	color: inherit;
	padding: 8px 10px;
	border-radius: 4px;
}
.pdfa3d-search-form button {
	border: 0;
	background: rgba(255,255,255,0.12);
	color: inherit;
	width: 36px;
	border-radius: 4px;
	cursor: pointer;
}

/* CSS fallback */
.pdfa3d-css-book {
	position: absolute;
	inset: 8%;
	display: flex;
	align-items: center;
	justify-content: center;
	perspective: 1600px;
}
.pdfa3d-css-book img {
	max-width: 100%;
	max-height: 100%;
	box-shadow: 0 18px 40px rgba(0,0,0,0.35);
	transform-origin: left center;
	transition: transform 0.4s ease;
	background: #fff;
}
.pdfa3d-css-flipping img {
	transform: rotateY(-18deg);
}

/* Lightbox trigger & overlay */
.pdfa3d-lightbox-trigger {
	display: inline-block;
	cursor: pointer;
	max-width: 100%;
}
.pdfa3d-lightbox-trigger img {
	display: block;
	max-width: 280px;
	height: auto;
	box-shadow: 0 10px 28px rgba(0,0,0,0.25);
}
.pdfa3d-lightbox-btn {
	display: inline-flex;
	align-items: center;
	padding: 10px 16px;
	background: #2c2c2c;
	color: #fff;
	border-radius: 4px;
}
.pdfa3d-lightbox-overlay {
	position: fixed;
	inset: 0;
	z-index: 100000;
	background: rgba(0,0,0,0.72);
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 24px;
}
.pdfa3d-lightbox-inner {
	position: relative;
	width: min(1100px, 96vw);
	height: min(820px, 92vh);
	background: #555;
	box-shadow: 0 24px 80px rgba(0,0,0,0.45);
}
.pdfa3d-lightbox-close {
	position: absolute;
	top: -40px;
	right: 0;
	z-index: 2;
	border: 0;
	background: transparent;
	color: #fff;
	cursor: pointer;
	width: 36px;
	height: 36px;
}
body.pdfa3d-lightbox-open { overflow: hidden; }

.pdfa3d-elementor-wrap {
	width: 100%;
}
.pdfa3d-elementor-placeholder {
	padding: 28px 16px;
	text-align: center;
	background: #ececec;
	color: #444;
	border: 1px dashed #aaa;
	font-size: 14px;
}

@media (max-width: 640px) {
	.pdfa3d-toolbar { left: 8px; right: 8px; bottom: 8px; }
	.pdfa3d-toolbar-actions button { width: 31px; height: 31px; }
	.pdfa3d-toolbar-actions button[data-act="share"],
	.pdfa3d-toolbar-actions button[data-act="print"] { display: none; }
	.pdfa3d-nav { width: 38px; height: 38px; }
	.pdfa3d-nav-prev { left: 8px; }
	.pdfa3d-nav-next { right: 8px; }
	.pdfa3d-text-layer,
	.pdfa3d-link-layer { inset: 10% 8% 16% 8%; }
}

@media (hover: none) {
	.pdfa3d-nav { opacity: 0.72; }
}