/*!
 * TD Flipbook - viewer styles
 * Everything is scoped under .tdfb-viewer. Colours come from custom properties
 * set by viewer.js on the instance root:
 *   --tdfb-bg, --tdfb-bg-image, --tdfb-bg-size, --tdfb-toolbar-bg, --tdfb-icon, --tdfb-accent, --tdfb-height, --tdfb-flip-ms
 * License: GPL-2.0-or-later
 */

/* ------------------------------------------------------------------ *
 * Root + reset
 * ------------------------------------------------------------------ */

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

.tdfb-viewer {
	--tdfb-pill-h: 52px;
	--tdfb-btn: 40px;
	--tdfb-icon-size: 22px;
	--tdfb-inset: 14px;
	--tdfb-ease: cubic-bezier(0.2, 0.7, 0.2, 1);

	position: relative;
	display: block;
	width: 100%;
	max-width: 100%;
	height: var(--tdfb-height);
	min-height: 300px;
	margin: 0;
	padding: 0;
	overflow: hidden;
	isolation: isolate;
	direction: ltr;
	background: var(--tdfb-bg) var(--tdfb-bg-image, none) center / var(--tdfb-bg-size, cover) no-repeat;
	color: var(--tdfb-icon);
	font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
	font-size: 15px;
	font-style: normal;
	font-weight: 400;
	line-height: 1.4;
	letter-spacing: normal;
	text-align: left;
	text-transform: none;
	text-shadow: none;
	word-spacing: normal;
	-webkit-font-smoothing: antialiased;
	-webkit-text-size-adjust: 100%;
	-webkit-tap-highlight-color: transparent;
}

.tdfb-viewer.tdfb--lg {
	--tdfb-pill-h: 64px;
	--tdfb-btn: 48px;
	--tdfb-icon-size: 24px;
	--tdfb-inset: 20px;
	font-size: 16px;
}

.tdfb-viewer.tdfb--sm {
	--tdfb-pill-h: 44px;
	--tdfb-btn: 38px;
	--tdfb-icon-size: 20px;
	--tdfb-inset: 10px;
	font-size: 14px;
}

.tdfb-viewer [hidden] {
	display: none !important;
}

.tdfb-viewer .tdfb-app {
	position: absolute;
	top: 0;
	right: 0;
	bottom: 0;
	left: 0;
}

/* Fullscreen: native API and the fixed-position fallback (iOS Safari). */
.tdfb-viewer:fullscreen {
	width: 100vw;
	height: 100vh;
	max-width: none;
}

.tdfb-viewer:-webkit-full-screen {
	width: 100vw;
	height: 100vh;
	max-width: none;
}

.tdfb-viewer.tdfb--fs-fallback {
	position: fixed;
	top: 0;
	right: 0;
	bottom: 0;
	left: 0;
	z-index: 2147483000;
	width: 100%;
	max-width: none;
	height: 100%;
	height: 100dvh;
}

/* Controls: neutralise whatever the theme does to buttons, inputs and links. */
.tdfb-viewer .tdfb-btn,
.tdfb-viewer .tdfb-counter,
.tdfb-viewer .tdfb-nav,
.tdfb-viewer .tdfb-thumb,
.tdfb-viewer .tdfb-toc-item,
.tdfb-viewer .tdfb-menu-item,
.tdfb-viewer .tdfb-btn:hover,
.tdfb-viewer .tdfb-counter:hover,
.tdfb-viewer .tdfb-nav:hover,
.tdfb-viewer .tdfb-thumb:hover,
.tdfb-viewer .tdfb-toc-item:hover,
.tdfb-viewer .tdfb-menu-item:hover,
.tdfb-viewer .tdfb-btn:focus,
.tdfb-viewer .tdfb-counter:focus,
.tdfb-viewer .tdfb-nav:focus,
.tdfb-viewer .tdfb-thumb:focus,
.tdfb-viewer .tdfb-toc-item:focus,
.tdfb-viewer .tdfb-menu-item:focus,
.tdfb-viewer .tdfb-btn:active,
.tdfb-viewer .tdfb-counter:active,
.tdfb-viewer .tdfb-nav:active,
.tdfb-viewer .tdfb-thumb:active,
.tdfb-viewer .tdfb-toc-item:active,
.tdfb-viewer .tdfb-menu-item:active {
	-webkit-appearance: none;
	appearance: none;
	position: relative;
	min-width: 0;
	min-height: 0;
	max-width: none;
	margin: 0;
	padding: 0;
	border: 0;
	border-radius: 0;
	background: none;
	box-shadow: none;
	color: inherit;
	font: inherit;
	letter-spacing: normal;
	text-decoration: none;
	text-shadow: none;
	text-transform: none;
	cursor: pointer;
	-webkit-user-select: none;
	user-select: none;
	touch-action: manipulation;
}

.tdfb-viewer :focus {
	outline: none;
}

.tdfb-viewer :focus-visible {
	outline: 2px solid var(--tdfb-accent);
	outline-offset: 2px;
}

.tdfb-viewer .tdfb-sr {
	position: absolute;
	width: 1px;
	height: 1px;
	margin: -1px;
	padding: 0;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border: 0;
}

.tdfb-viewer .tdfb-icon {
	position: relative;
	display: block;
	flex: none;
	width: var(--tdfb-icon-size);
	height: var(--tdfb-icon-size);
	max-width: none;
	pointer-events: none;
}

/* ------------------------------------------------------------------ *
 * Stage + book
 * ------------------------------------------------------------------ */

.tdfb-viewer .tdfb-stage {
	position: absolute;
	top: 0;
	right: 0;
	bottom: 0;
	left: 0;
	display: flex;
	align-items: center;
	justify-content: center;
	overflow: hidden;
	touch-action: pan-y;
	-webkit-user-select: none;
	user-select: none;
}

.tdfb-viewer .tdfb-stage:focus-visible {
	outline-offset: -4px;
}

.tdfb-viewer.tdfb--zoomed .tdfb-stage {
	touch-action: none;
	cursor: grab;
}

.tdfb-viewer.tdfb--panning .tdfb-stage {
	cursor: grabbing;
}

.tdfb-viewer .tdfb-zoom {
	position: relative;
	flex: none;
	transform-origin: 50% 50%;
}

.tdfb-viewer .tdfb-zoom--animate {
	transition: transform 0.28s var(--tdfb-ease);
}

.tdfb-viewer .tdfb-shift {
	position: relative;
	transition: transform var(--tdfb-flip-ms) cubic-bezier(0.4, 0, 0.2, 1);
}

.tdfb-viewer .tdfb-book-shadow {
	position: absolute;
	top: 0;
	left: 0;
	height: 100%;
	border-radius: 2px;
	box-shadow: 0 22px 60px rgba(0, 0, 0, 0.36), 0 6px 16px rgba(0, 0, 0, 0.2);
	pointer-events: none;
	transition: left var(--tdfb-flip-ms) cubic-bezier(0.4, 0, 0.2, 1), width var(--tdfb-flip-ms) cubic-bezier(0.4, 0, 0.2, 1);
}

.tdfb-viewer.tdfb--no-shadow .tdfb-book-shadow,
.tdfb-viewer:not(.tdfb--ready) .tdfb-book-shadow {
	display: none;
}

.tdfb-viewer .tdfb-book {
	position: relative;
	min-width: 0;
	min-height: 0;
}

/* StPageFlip ships a typo for this selector, so its wrapper is unstyled. */
.tdfb-viewer .tdfb-book .stf__wrapper {
	position: relative;
	width: 100%;
	height: 100%;
	padding: 0;
}

.tdfb-viewer .tdfb-page {
	overflow: hidden;
	background: #fff;
}

.tdfb-viewer .tdfb-page-canvas {
	position: absolute;
	top: 0;
	left: 0;
	display: block;
	width: 100%;
	height: 100%;
	max-width: none;
	margin: 0;
	object-fit: contain;
	pointer-events: none;
}

/* Placeholder while a page is waiting for its canvas. */
.tdfb-viewer .tdfb-page::before {
	content: "";
	position: absolute;
	top: 50%;
	left: 50%;
	width: 26px;
	height: 26px;
	margin: -13px 0 0 -13px;
	border: 2px solid rgba(0, 0, 0, 0.12);
	border-top-color: rgba(0, 0, 0, 0.45);
	border-radius: 50%;
	animation: tdfb-spin 0.8s linear infinite;
}

.tdfb-viewer .tdfb-page--ready::before {
	display: none;
}

/* Spine shading on an open spread. */
.tdfb-viewer.tdfb--spread .tdfb-page::after {
	content: "";
	position: absolute;
	top: 0;
	bottom: 0;
	z-index: 2;
	width: 9%;
	pointer-events: none;
}

.tdfb-viewer.tdfb--spread .tdfb-page.\--left::after {
	right: 0;
	background: linear-gradient(to left, rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.06) 32%, rgba(0, 0, 0, 0));
}

.tdfb-viewer.tdfb--spread .tdfb-page.\--right::after {
	left: 0;
	background: linear-gradient(to right, rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.06) 32%, rgba(0, 0, 0, 0));
}

.tdfb-viewer.tdfb--no-shadow .tdfb-page::after {
	display: none;
}

/* ------------------------------------------------------------------ *
 * Side navigation
 * ------------------------------------------------------------------ */

.tdfb-viewer .tdfb-nav,
.tdfb-viewer .tdfb-nav:hover,
.tdfb-viewer .tdfb-nav:focus,
.tdfb-viewer .tdfb-nav:active {
	position: absolute;
	top: 50%;
	z-index: 3;
	display: flex;
	align-items: center;
	justify-content: center;
	width: 52px;
	height: 104px;
	margin-top: -52px;
	border-radius: 14px;
	color: var(--tdfb-icon);
	opacity: 0.92;
	filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.5));
	transition: opacity 0.18s ease, transform 0.18s var(--tdfb-ease);
}

.tdfb-viewer .tdfb-nav--prev {
	left: 6px;
}

.tdfb-viewer .tdfb-nav--next {
	right: 6px;
}

.tdfb-viewer .tdfb-chevron {
	display: block;
	width: 22px;
	height: 44px;
	max-width: none;
	pointer-events: none;
}

.tdfb-viewer.tdfb--lg .tdfb-nav {
	width: 64px;
	height: 128px;
	margin-top: -64px;
}

.tdfb-viewer.tdfb--lg .tdfb-nav--prev {
	left: 10px;
}

.tdfb-viewer.tdfb--lg .tdfb-nav--next {
	right: 10px;
}

.tdfb-viewer.tdfb--lg .tdfb-chevron {
	width: 28px;
	height: 56px;
}

.tdfb-viewer.tdfb--sm .tdfb-nav {
	width: 36px;
	height: 76px;
	margin-top: -38px;
}

.tdfb-viewer.tdfb--sm .tdfb-nav--prev {
	left: 0;
}

.tdfb-viewer.tdfb--sm .tdfb-nav--next {
	right: 0;
}

.tdfb-viewer.tdfb--sm .tdfb-chevron {
	width: 16px;
	height: 32px;
}

.tdfb-viewer .tdfb-nav:hover:not(:disabled) {
	opacity: 1;
}

.tdfb-viewer .tdfb-nav--prev:hover:not(:disabled) {
	transform: translateX(-3px);
}

.tdfb-viewer .tdfb-nav--next:hover:not(:disabled) {
	transform: translateX(3px);
}

.tdfb-viewer .tdfb-nav:disabled {
	opacity: 0.22;
	cursor: default;
}

.tdfb-viewer.tdfb--zoomed .tdfb-nav:not(:disabled) {
	opacity: 0.7;
}

/* ------------------------------------------------------------------ *
 * Floating pills
 * ------------------------------------------------------------------ */

.tdfb-viewer .tdfb-pill {
	position: absolute;
	top: var(--tdfb-inset);
	z-index: 5;
	display: flex;
	align-items: center;
	gap: 2px;
	max-width: calc(100% - var(--tdfb-inset) * 2);
	height: var(--tdfb-pill-h);
	padding: 0 calc((var(--tdfb-pill-h) - var(--tdfb-btn)) / 2);
	border-radius: 999px;
	background: var(--tdfb-toolbar-bg);
	-webkit-backdrop-filter: blur(14px) saturate(140%);
	backdrop-filter: blur(14px) saturate(140%);
	box-shadow: 0 8px 28px rgba(0, 0, 0, 0.18);
	color: var(--tdfb-icon);
	white-space: nowrap;
	transition: opacity 0.25s ease;
}

.tdfb-viewer .tdfb-pill--left {
	left: var(--tdfb-inset);
}

.tdfb-viewer .tdfb-pill--right {
	right: var(--tdfb-inset);
}

/* Not enough room for one row: left pill centred on top, right pill at the bottom. */
.tdfb-viewer.tdfb--stacked .tdfb-pill {
	left: 50%;
	right: auto;
	transform: translateX(-50%);
}

.tdfb-viewer.tdfb--stacked .tdfb-pill--right {
	top: auto;
	bottom: var(--tdfb-inset);
}

.tdfb-viewer:not(.tdfb--ready) .tdfb-pill,
.tdfb-viewer:not(.tdfb--ready) .tdfb-nav {
	opacity: 0.4;
	pointer-events: none;
}

.tdfb-viewer.tdfb--error .tdfb-pill,
.tdfb-viewer.tdfb--error .tdfb-nav {
	display: none;
}

.tdfb-viewer .tdfb-btn,
.tdfb-viewer .tdfb-btn:hover,
.tdfb-viewer .tdfb-btn:focus,
.tdfb-viewer .tdfb-btn:active {
	display: inline-flex;
	flex: none;
	align-items: center;
	justify-content: center;
	width: var(--tdfb-btn);
	height: var(--tdfb-btn);
	border-radius: 50%;
	transition: color 0.18s ease, opacity 0.18s ease;
}

/* Hover/press wash that follows the icon colour, whatever it is. */
.tdfb-viewer .tdfb-btn::before,
.tdfb-viewer .tdfb-counter::before,
.tdfb-viewer .tdfb-toc-item::before,
.tdfb-viewer .tdfb-menu-item::before {
	content: "";
	position: absolute;
	top: 0;
	right: 0;
	bottom: 0;
	left: 0;
	border-radius: inherit;
	background: currentColor;
	opacity: 0;
	pointer-events: none;
	transition: opacity 0.18s ease;
}

.tdfb-viewer .tdfb-btn:hover:not(:disabled)::before,
.tdfb-viewer .tdfb-counter:hover::before,
.tdfb-viewer .tdfb-toc-item:hover:not(:disabled)::before,
.tdfb-viewer .tdfb-menu-item:hover::before {
	opacity: 0.13;
}

.tdfb-viewer .tdfb-btn:active:not(:disabled)::before,
.tdfb-viewer .tdfb-counter:active::before,
.tdfb-viewer .tdfb-toc-item:active:not(:disabled)::before,
.tdfb-viewer .tdfb-menu-item:active::before {
	opacity: 0.22;
}

.tdfb-viewer .tdfb-btn:disabled,
.tdfb-viewer .tdfb-toc-item:disabled {
	opacity: 0.36;
	cursor: default;
}

.tdfb-viewer .tdfb-btn.tdfb-btn--active,
.tdfb-viewer .tdfb-btn[aria-expanded="true"],
.tdfb-viewer .tdfb-btn[aria-pressed="true"] {
	color: var(--tdfb-accent);
}

.tdfb-viewer .tdfb-btn--active .tdfb-icon-fill,
.tdfb-viewer .tdfb-menu-item--active .tdfb-icon-fill {
	fill: currentColor;
}

.tdfb-viewer .tdfb-counter,
.tdfb-viewer .tdfb-counter:hover,
.tdfb-viewer .tdfb-counter:focus,
.tdfb-viewer .tdfb-counter:active {
	display: inline-flex;
	flex: none;
	align-items: center;
	justify-content: center;
	min-width: 5.4em;
	height: var(--tdfb-btn);
	padding: 0 0.85em;
	border-radius: 999px;
	font-size: 1em;
	font-weight: 600;
	font-variant-numeric: tabular-nums;
	line-height: 1;
	letter-spacing: 0.01em;
	cursor: text;
}

.tdfb-viewer .tdfb-page-input,
.tdfb-viewer .tdfb-page-input:hover,
.tdfb-viewer .tdfb-page-input:focus {
	-webkit-appearance: none;
	-moz-appearance: textfield;
	appearance: none;
	flex: none;
	width: 5.4em;
	min-width: 0;
	max-width: none;
	height: var(--tdfb-btn);
	min-height: 0;
	margin: 0;
	padding: 0 0.6em;
	border: 0;
	border-radius: 999px;
	outline: none;
	background: transparent;
	box-shadow: inset 0 0 0 2px var(--tdfb-accent);
	color: var(--tdfb-icon);
	font: inherit;
	font-weight: 600;
	font-variant-numeric: tabular-nums;
	line-height: 1;
	text-align: center;
}

.tdfb-viewer .tdfb-page-input::placeholder {
	color: currentColor;
	opacity: 0.5;
}

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

/* ------------------------------------------------------------------ *
 * Side panels (thumbnails, contents, bookmarks)
 * ------------------------------------------------------------------ */

.tdfb-viewer .tdfb-panel {
	position: absolute;
	top: 0;
	bottom: 0;
	left: 0;
	z-index: 8;
	display: flex;
	flex-direction: column;
	width: 320px;
	max-width: 86%;
	background: var(--tdfb-toolbar-bg);
	-webkit-backdrop-filter: blur(24px) saturate(140%);
	backdrop-filter: blur(24px) saturate(140%);
	box-shadow: 14px 0 44px rgba(0, 0, 0, 0.26);
	color: var(--tdfb-icon);
	visibility: hidden;
	transform: translateX(-104%);
	transition: transform 0.3s var(--tdfb-ease), visibility 0s linear 0.3s;
}

.tdfb-viewer .tdfb-panel--open {
	visibility: visible;
	transform: none;
	transition: transform 0.3s var(--tdfb-ease), visibility 0s;
}

.tdfb-viewer .tdfb-panel-head {
	display: flex;
	flex: none;
	align-items: center;
	justify-content: space-between;
	gap: 12px;
	height: calc(var(--tdfb-pill-h) + var(--tdfb-inset));
	padding: 0 10px 0 20px;
}

.tdfb-viewer .tdfb-panel-title {
	overflow: hidden;
	font-size: 1.05em;
	font-weight: 600;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.tdfb-viewer .tdfb-panel-body {
	flex: 1 1 auto;
	min-height: 0;
	padding: 4px 12px 18px;
	overflow-x: hidden;
	overflow-y: auto;
	overscroll-behavior: contain;
	-webkit-overflow-scrolling: touch;
	scrollbar-width: thin;
	scrollbar-color: var(--tdfb-icon) transparent;
}

.tdfb-viewer .tdfb-empty {
	margin: 0;
	padding: 16px 12px;
	font-size: 0.93em;
	line-height: 1.5;
	opacity: 0.78;
}

/* Thumbnails: two columns that mirror the spreads (cover alone on the right). */
.tdfb-viewer .tdfb-thumbs {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 16px 8px;
	padding: 6px 8px;
}

.tdfb-viewer .tdfb-thumb-cell:first-child {
	grid-column: 2;
}

.tdfb-viewer .tdfb-thumb,
.tdfb-viewer .tdfb-thumb:hover,
.tdfb-viewer .tdfb-thumb:focus,
.tdfb-viewer .tdfb-thumb:active {
	display: block;
	width: 100%;
	border-radius: 3px;
	text-align: center;
}

.tdfb-viewer .tdfb-thumb-frame {
	position: relative;
	display: block;
	width: 100%;
	padding-bottom: var(--tdfb-thumb-pad, 141%);
	overflow: hidden;
	border-radius: 2px;
	box-shadow: 0 3px 10px rgba(0, 0, 0, 0.25);
	transition: transform 0.2s var(--tdfb-ease);
}

.tdfb-viewer .tdfb-thumb-frame::before {
	content: "";
	position: absolute;
	top: 0;
	right: 0;
	bottom: 0;
	left: 0;
	background: currentColor;
	opacity: 0.14;
}

.tdfb-viewer .tdfb-thumb-frame--ready::before {
	display: none;
}

.tdfb-viewer .tdfb-thumb-img {
	position: absolute;
	top: 0;
	left: 0;
	display: block;
	width: 100%;
	height: 100%;
	max-width: none;
	margin: 0;
	padding: 0;
	border: 0;
	border-radius: 0;
	box-shadow: none;
	object-fit: cover;
}

.tdfb-viewer .tdfb-thumb:hover .tdfb-thumb-frame {
	transform: translateY(-2px);
}

.tdfb-viewer .tdfb-thumb-num {
	display: block;
	margin-top: 6px;
	font-size: 0.8em;
	font-variant-numeric: tabular-nums;
	line-height: 1.2;
	opacity: 0.8;
}

.tdfb-viewer .tdfb-thumb[aria-current="page"] .tdfb-thumb-frame {
	outline: 2px solid var(--tdfb-accent);
	outline-offset: 2px;
}

.tdfb-viewer .tdfb-thumb[aria-current="page"] .tdfb-thumb-num {
	color: var(--tdfb-accent);
	font-weight: 600;
	opacity: 1;
}

/* Contents + bookmark rows */
.tdfb-viewer .tdfb-toc-item,
.tdfb-viewer .tdfb-toc-item:hover,
.tdfb-viewer .tdfb-toc-item:focus,
.tdfb-viewer .tdfb-toc-item:active {
	display: flex;
	align-items: baseline;
	gap: 12px;
	width: 100%;
	padding: 10px 14px;
	border-radius: 10px;
	font-size: 0.93em;
	line-height: 1.35;
	text-align: left;
	white-space: normal;
}

.tdfb-viewer .tdfb-toc-label {
	position: relative;
	flex: 1 1 auto;
	min-width: 0;
	overflow-wrap: anywhere;
}

.tdfb-viewer .tdfb-toc-num {
	position: relative;
	flex: none;
	font-variant-numeric: tabular-nums;
	opacity: 0.7;
}

.tdfb-viewer .tdfb-menu-item.tdfb-bookmark-toggle {
	margin: 2px 0 10px;
}

.tdfb-viewer .tdfb-bookmark-toggle::before {
	opacity: 0.1;
}

.tdfb-viewer .tdfb-bookmark-toggle:hover::before {
	opacity: 0.18;
}

.tdfb-viewer .tdfb-menu-item.tdfb-menu-item--active {
	color: var(--tdfb-accent);
}

.tdfb-viewer .tdfb-bookmark-row {
	display: flex;
	align-items: center;
	gap: 4px;
}

.tdfb-viewer .tdfb-bookmark-row .tdfb-toc-item {
	flex: 1 1 auto;
	width: auto;
}

.tdfb-viewer .tdfb-bookmark-remove,
.tdfb-viewer .tdfb-bookmark-remove:hover,
.tdfb-viewer .tdfb-bookmark-remove:focus,
.tdfb-viewer .tdfb-bookmark-remove:active {
	width: 36px;
	height: 36px;
	opacity: 0.8;
}

.tdfb-viewer .tdfb-bookmark-remove .tdfb-icon {
	width: 18px;
	height: 18px;
}

/* ------------------------------------------------------------------ *
 * Popovers (share, more)
 * ------------------------------------------------------------------ */

.tdfb-viewer .tdfb-popover {
	position: absolute;
	z-index: 9;
	min-width: 212px;
	max-width: calc(100% - 16px);
	padding: 6px;
	border-radius: 18px;
	background: var(--tdfb-toolbar-bg);
	-webkit-backdrop-filter: blur(24px) saturate(140%);
	backdrop-filter: blur(24px) saturate(140%);
	box-shadow: 0 14px 40px rgba(0, 0, 0, 0.3);
	color: var(--tdfb-icon);
	opacity: 0;
	visibility: hidden;
	transform: translateY(-6px) scale(0.98);
	transform-origin: 100% 0;
	transition: opacity 0.16s ease, transform 0.2s var(--tdfb-ease), visibility 0s linear 0.2s;
}

.tdfb-viewer .tdfb-popover--above {
	transform: translateY(6px) scale(0.98);
	transform-origin: 100% 100%;
}

.tdfb-viewer .tdfb-popover--open {
	opacity: 1;
	visibility: visible;
	transform: none;
	transition: opacity 0.16s ease, transform 0.2s var(--tdfb-ease), visibility 0s;
}

.tdfb-viewer .tdfb-menu-item,
.tdfb-viewer .tdfb-menu-item:hover,
.tdfb-viewer .tdfb-menu-item:focus,
.tdfb-viewer .tdfb-menu-item:active,
.tdfb-viewer .tdfb-popover a.tdfb-menu-item,
.tdfb-viewer .tdfb-popover a.tdfb-menu-item:hover,
.tdfb-viewer .tdfb-popover a.tdfb-menu-item:visited {
	display: flex;
	align-items: center;
	gap: 12px;
	width: 100%;
	padding: 10px 16px 10px 12px;
	border-radius: 12px;
	color: inherit;
	font-size: 0.93em;
	font-weight: 500;
	line-height: 1.3;
	text-align: left;
	text-decoration: none;
	white-space: nowrap;
}

.tdfb-viewer .tdfb-menu-item .tdfb-icon {
	width: 20px;
	height: 20px;
}

.tdfb-viewer .tdfb-menu-label {
	position: relative;
}

/* ------------------------------------------------------------------ *
 * Loading / error overlay, toast
 * ------------------------------------------------------------------ */

.tdfb-viewer .tdfb-overlay {
	position: absolute;
	top: 0;
	right: 0;
	bottom: 0;
	left: 0;
	z-index: 4;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 16px;
	padding: 24px;
	background: var(--tdfb-bg) var(--tdfb-bg-image, none) center / var(--tdfb-bg-size, cover) no-repeat;
	color: var(--tdfb-icon);
	text-align: center;
	opacity: 0;
	visibility: hidden;
	transition: opacity 0.3s ease, visibility 0s linear 0.3s;
}

.tdfb-viewer.tdfb--loading .tdfb-overlay,
.tdfb-viewer.tdfb--error .tdfb-overlay {
	opacity: 1;
	visibility: visible;
	transition: opacity 0.3s ease, visibility 0s;
}

.tdfb-viewer .tdfb-overlay-text {
	max-width: 32em;
	font-size: 1em;
	font-weight: 500;
	line-height: 1.45;
}

.tdfb-viewer .tdfb-overlay .tdfb-icon {
	width: 40px;
	height: 40px;
	opacity: 0.9;
}

.tdfb-viewer .tdfb-overlay-link,
.tdfb-viewer .tdfb-overlay-link:hover,
.tdfb-viewer .tdfb-overlay-link:visited {
	color: var(--tdfb-accent);
	font-size: 0.93em;
	font-weight: 600;
	text-decoration: underline;
	text-underline-offset: 3px;
}

.tdfb-viewer .tdfb-spinner {
	position: relative;
	display: block;
	width: 40px;
	height: 40px;
	border: 3px solid transparent;
	border-top-color: var(--tdfb-accent);
	border-radius: 50%;
	animation: tdfb-spin 0.8s linear infinite;
}

.tdfb-viewer .tdfb-spinner::before {
	content: "";
	position: absolute;
	top: -3px;
	right: -3px;
	bottom: -3px;
	left: -3px;
	border: 3px solid currentColor;
	border-radius: 50%;
	opacity: 0.18;
}

.tdfb-viewer .tdfb-progress {
	position: relative;
	display: block;
	width: 168px;
	max-width: 60%;
	height: 3px;
	overflow: hidden;
	border-radius: 3px;
}

.tdfb-viewer .tdfb-progress::before {
	content: "";
	position: absolute;
	top: 0;
	right: 0;
	bottom: 0;
	left: 0;
	background: currentColor;
	opacity: 0.2;
}

.tdfb-viewer .tdfb-progress-bar {
	position: absolute;
	top: 0;
	right: 0;
	bottom: 0;
	left: 0;
	background: var(--tdfb-accent);
	transform: scaleX(0);
	transform-origin: 0 50%;
	transition: transform 0.2s linear;
}

.tdfb-viewer .tdfb-toast {
	position: absolute;
	bottom: calc(var(--tdfb-inset) + 8px);
	left: 50%;
	z-index: 10;
	max-width: calc(100% - 32px);
	padding: 10px 18px;
	border-radius: 999px;
	background: var(--tdfb-toolbar-bg);
	-webkit-backdrop-filter: blur(18px);
	backdrop-filter: blur(18px);
	box-shadow: 0 8px 28px rgba(0, 0, 0, 0.25);
	color: var(--tdfb-icon);
	font-size: 0.93em;
	font-weight: 500;
	white-space: nowrap;
	pointer-events: none;
	opacity: 0;
	visibility: hidden;
	transform: translate(-50%, 8px);
	transition: opacity 0.2s ease, transform 0.25s var(--tdfb-ease), visibility 0s linear 0.25s;
}

.tdfb-viewer.tdfb--stacked .tdfb-toast {
	bottom: calc(var(--tdfb-inset) + var(--tdfb-pill-h) + 12px);
}

.tdfb-viewer .tdfb-toast--show {
	opacity: 1;
	visibility: visible;
	transform: translate(-50%, 0);
	transition: opacity 0.2s ease, transform 0.25s var(--tdfb-ease), visibility 0s;
}

/* ------------------------------------------------------------------ *
 * Motion
 * ------------------------------------------------------------------ */

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

@keyframes tdfb-pulse {
	0%,
	100% {
		opacity: 1;
	}

	50% {
		opacity: 0.35;
	}
}

.tdfb-viewer.tdfb--reduced *,
.tdfb-viewer.tdfb--reduced *::before,
.tdfb-viewer.tdfb--reduced *::after {
	transition-duration: 0.01ms !important;
	transition-delay: 0s !important;
}

.tdfb-viewer.tdfb--reduced .tdfb-spinner,
.tdfb-viewer.tdfb--reduced .tdfb-page::before {
	animation: tdfb-pulse 1.8s ease-in-out infinite;
}

@media (prefers-reduced-motion: reduce) {
	.tdfb-viewer *,
	.tdfb-viewer *::before,
	.tdfb-viewer *::after {
		transition-duration: 0.01ms !important;
		transition-delay: 0s !important;
	}

	.tdfb-viewer .tdfb-spinner,
	.tdfb-viewer .tdfb-page::before {
		animation: tdfb-pulse 1.8s ease-in-out infinite;
	}
}

@media print {
	.tdfb-viewer .tdfb-pill,
	.tdfb-viewer .tdfb-nav,
	.tdfb-viewer .tdfb-panel,
	.tdfb-viewer .tdfb-popover,
	.tdfb-viewer .tdfb-toast {
		display: none !important;
	}
}