/* Portfolio Flipbook */

.pfb {
	--pfb-accent: #e4572e;
	--pfb-fg: #1b1b1b;
	--pfb-bg: #efeeeb;
	--pfb-shadow: 0.6;
	position: relative;
	display: flex;
	flex-direction: column;
	box-sizing: border-box;
	width: 100%;
	background-color: var(--pfb-bg);
	color: var(--pfb-fg);
	border-radius: 12px;
	-webkit-tap-highlight-color: transparent;
}
.pfb *,
.pfb *::before,
.pfb *::after {
	box-sizing: border-box;
}
.pfb--dark {
	--pfb-fg: #f2f2f2;
	--pfb-bg: #121214;
}
.pfb--transparent {
	--pfb-fg: currentColor;
	--pfb-bg: transparent;
}
.pfb.alignfull {
	border-radius: 0;
}

.pfb-notice {
	padding: 12px 16px;
	border: 1px dashed currentColor;
	border-radius: 8px;
	font-size: 14px;
}

/* ---------- stage ---------- */

.pfb__stage {
	position: relative;
	flex: 1 1 auto;
	min-height: 260px;
	display: flex;
	align-items: center;
	justify-content: center;
	outline: none;
	user-select: none;
	-webkit-user-select: none;
	touch-action: pan-y pinch-zoom;
	cursor: grab;
}
.pfb__stage:active {
	cursor: grabbing;
}
.pfb--single .pfb__stage,
.pfb.is-zoomed .pfb__stage {
	overflow: hidden;
	touch-action: none;
	cursor: move;
}
.pfb__stage:focus-visible {
	box-shadow: inset 0 0 0 2px var(--pfb-accent);
	border-radius: 8px;
}

.pfb__zoomer {
	position: relative;
	transform-origin: 50% 50%;
}
.pfb__zoomer.is-easing {
	transition: transform 0.35s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.pfb__book {
	position: relative;
	margin: 0 auto;
	transform-style: flat;
}
.pfb__ground {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	pointer-events: none;
	box-shadow:
		0 22px 38px -14px rgba(0, 0, 0, calc(0.5 * var(--pfb-shadow))),
		0 6px 14px -4px rgba(0, 0, 0, calc(0.3 * var(--pfb-shadow)));
}

/* ---------- leaves and faces ---------- */

.pfb__leaf {
	position: absolute;
	top: 0;
	left: 0;
	width: var(--pw);
	height: var(--ph);
	transform-origin: 0 50%;
	transform-style: preserve-3d;
	-webkit-transform-style: preserve-3d;
}
.pfb--double .pfb__leaf {
	left: var(--pw);
}
.pfb__leaf.is-moving {
	will-change: transform;
}

.pfb__face {
	position: absolute;
	inset: 0;
	display: flex;
	overflow: hidden;
	background: #fff;
	backface-visibility: hidden;
	-webkit-backface-visibility: hidden;
	outline: 1px solid rgba(0, 0, 0, 0.07);
	outline-offset: -1px;
}
.pfb__face--back {
	transform: rotateY(180deg);
}
.pfb__face--blank {
	background: #f7f6f3;
}

.pfb__canvas {
	display: block;
	width: 100%;
	height: 100%;
	object-fit: contain;
	opacity: 0;
	transition: opacity 0.35s ease;
}
.pfb__canvas.is-in {
	opacity: 1;
}

/* soft shading near the spine */
.pfb__face::after {
	content: "";
	position: absolute;
	inset: 0;
	pointer-events: none;
	background: linear-gradient(to right, rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.05) 3%, rgba(0, 0, 0, 0) 9%);
	opacity: var(--pfb-shadow);
}
.pfb__face--back::after {
	background: linear-gradient(to left, rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.05) 3%, rgba(0, 0, 0, 0) 9%);
}

/* lighting on the leaf that is turning */
.pfb__shade,
.pfb__cast {
	position: absolute;
	inset: 0;
	pointer-events: none;
	opacity: 0;
}
.pfb__face--front .pfb__shade {
	background: linear-gradient(to right, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.3));
}
.pfb__face--back .pfb__shade {
	background: linear-gradient(to left, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.3));
}
/* shadow thrown onto the page underneath */
.pfb__face--front .pfb__cast {
	background: linear-gradient(to right, rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0) 70%);
}
.pfb__face--back .pfb__cast {
	background: linear-gradient(to left, rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0) 70%);
}

/* ---------- loading / error ---------- */

.pfb__loading {
	position: absolute;
	inset: 0;
	z-index: 5;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 14px;
	font-size: 14px;
	letter-spacing: 0.02em;
	transition: opacity 0.4s ease, visibility 0.4s;
}
.pfb:not(.pfb--loading) .pfb__loading {
	opacity: 0;
	visibility: hidden;
	pointer-events: none;
}
.pfb__loading a {
	color: var(--pfb-accent);
}
.pfb__spinner {
	width: 30px;
	height: 30px;
	border-radius: 50%;
	border: 2px solid color-mix(in srgb, var(--pfb-fg) 18%, transparent);
	border-top-color: var(--pfb-accent);
	animation: pfb-spin 0.8s linear infinite;
}
.pfb.has-error .pfb__spinner {
	display: none;
}
@keyframes pfb-spin {
	to {
		transform: rotate(360deg);
	}
}
.pfb__zoomer {
	transition: opacity 0.5s ease;
}
.pfb--loading .pfb__zoomer {
	opacity: 0;
}

/* ---------- control bar ---------- */

.pfb__bar {
	display: flex;
	align-items: center;
	gap: 6px;
	align-self: center;
	max-width: calc(100% - 24px);
	margin: 4px 12px 16px;
	padding: 6px;
	border-radius: 999px;
	background: color-mix(in srgb, var(--pfb-fg) 8%, transparent);
	backdrop-filter: blur(8px);
	-webkit-backdrop-filter: blur(8px);
}
/* Themes like to restyle buttons and links, so these rules carry the .pfb prefix. */
.pfb .pfb__btn,
.pfb .pfb__btn:hover,
.pfb .pfb__btn:focus,
.pfb .pfb__btn:active {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	flex: none;
	width: 40px;
	height: 40px;
	min-height: 0;
	padding: 0;
	margin: 0;
	border: 0;
	border-radius: 50%;
	box-shadow: none;
	font: inherit;
	line-height: 1;
	text-transform: none;
	letter-spacing: normal;
	color: inherit;
	cursor: pointer;
	text-decoration: none;
}
.pfb .pfb__btn {
	background: transparent;
	transition: background 0.2s ease, color 0.2s ease, opacity 0.2s ease;
}
.pfb .pfb__btn:hover:not(:disabled) {
	background: color-mix(in srgb, var(--pfb-fg) 12%, transparent);
}
.pfb__btn:focus-visible,
.pfb__range:focus-visible {
	outline: 2px solid var(--pfb-accent);
	outline-offset: 2px;
}
.pfb__btn:disabled {
	opacity: 0.3;
	cursor: default;
}
.pfb .pfb__btn--prev,
.pfb .pfb__btn--next,
.pfb .pfb__btn--prev:hover,
.pfb .pfb__btn--next:hover,
.pfb .pfb__btn--prev:focus,
.pfb .pfb__btn--next:focus {
	background: var(--pfb-accent);
	color: #fff;
}
.pfb .pfb__btn--prev:hover:not(:disabled),
.pfb .pfb__btn--next:hover:not(:disabled) {
	background: var(--pfb-accent);
	filter: brightness(1.12);
}
.pfb__btn--zoom .pfb__icon--zoom-out,
.pfb__btn--sound .pfb__icon--sound-off,
.pfb__btn--fullscreen .pfb__icon--collapse {
	display: none;
}
.pfb.is-zoomed .pfb__btn--zoom .pfb__icon--zoom-in,
.pfb.is-muted .pfb__btn--sound .pfb__icon--sound-on,
.pfb.pfb--fs .pfb__btn--fullscreen .pfb__icon--expand {
	display: none;
}
.pfb.is-zoomed .pfb__btn--zoom .pfb__icon--zoom-out,
.pfb.is-muted .pfb__btn--sound .pfb__icon--sound-off,
.pfb.pfb--fs .pfb__btn--fullscreen .pfb__icon--collapse {
	display: block;
}
.pfb__sep {
	width: 1px;
	height: 22px;
	margin: 0 4px;
	background: color-mix(in srgb, var(--pfb-fg) 20%, transparent);
}
.pfb__mid {
	display: flex;
	align-items: center;
	gap: 14px;
	padding: 0 10px;
}
.pfb__label {
	min-width: 5.5em;
	font-size: 13px;
	font-variant-numeric: tabular-nums;
	text-align: center;
	white-space: nowrap;
}

.pfb__range {
	-webkit-appearance: none;
	appearance: none;
	width: clamp(80px, 22vw, 260px);
	height: 22px;
	margin: 0;
	background: transparent;
	cursor: pointer;
}
.pfb__range::-webkit-slider-runnable-track {
	height: 4px;
	border-radius: 2px;
	background: color-mix(in srgb, var(--pfb-fg) 22%, transparent);
}
.pfb__range::-moz-range-track {
	height: 4px;
	border-radius: 2px;
	background: color-mix(in srgb, var(--pfb-fg) 22%, transparent);
}
.pfb__range::-webkit-slider-thumb {
	-webkit-appearance: none;
	width: 16px;
	height: 16px;
	margin-top: -6px;
	border: 0;
	border-radius: 50%;
	background: var(--pfb-accent);
}
.pfb__range::-moz-range-thumb {
	width: 16px;
	height: 16px;
	border: 0;
	border-radius: 50%;
	background: var(--pfb-accent);
}

/* ---------- full screen ---------- */

.pfb.pfb--fs {
	position: fixed;
	inset: 0;
	z-index: 999999;
	width: 100vw;
	height: 100vh;
	height: 100dvh;
	margin: 0;
	border-radius: 0;
	background-color: var(--pfb-bg);
}
.pfb--transparent.pfb--fs {
	background-color: #1a1a1c;
	--pfb-fg: #f2f2f2;
}
.pfb--fs .pfb__stage {
	min-height: 0;
}
html.pfb-lock,
html.pfb-lock body {
	overflow: hidden !important;
}

/* ---------- small screens ---------- */

@media (max-width: 560px) {
	.pfb__bar {
		gap: 2px;
		padding: 4px;
		margin-bottom: 12px;
	}
	.pfb .pfb__btn,
	.pfb .pfb__btn:hover,
	.pfb .pfb__btn:focus,
	.pfb .pfb__btn:active {
		width: 38px;
		height: 38px;
	}
	.pfb__mid {
		padding: 0 4px;
		gap: 8px;
	}
	.pfb__range {
		width: clamp(60px, 26vw, 140px);
	}
	.pfb__label {
		min-width: 4.5em;
		font-size: 12px;
	}
	.pfb__sep {
		margin: 0 1px;
	}
}
@media (max-width: 400px) {
	.pfb__range {
		display: none;
	}
}

@media (prefers-reduced-motion: reduce) {
	.pfb__canvas,
	.pfb__loading,
	.pfb__zoomer {
		transition: none;
	}
	.pfb__spinner {
		animation-duration: 2s;
	}
}

@media print {
	.pfb__bar {
		display: none;
	}
}