inst/reveal.js-4.2.1/css/reveal.scss

@use "sass:math";

/**
 * reveal.js
 * http://revealjs.com
 * MIT licensed
 *
 * Copyright (C) Hakim El Hattab, https://hakim.se
 */

@import 'layout';

/*********************************************
 * GLOBAL STYLES
 *********************************************/

html.reveal-full-page {
	width: 100%;
	height: 100%;
	height: 100vh;
	height: calc( var(--vh, 1vh) * 100 );
	overflow: hidden;
}

.reveal-viewport {
	height: 100%;
	overflow: hidden;
	position: relative;
	line-height: 1;
	margin: 0;

	background-color: #fff;
	color: #000;
}


/*********************************************
 * VIEW FRAGMENTS
 *********************************************/

.reveal .slides section .fragment {
	opacity: 0;
	visibility: hidden;
	transition: all .2s ease;
	will-change: opacity;

	&.visible {
		opacity: 1;
		visibility: inherit;
	}

	&.disabled {
		transition: none;
	}
}

.reveal .slides section .fragment.grow {
	opacity: 1;
	visibility: inherit;

	&.visible {
		transform: scale( 1.3 );
	}
}

.reveal .slides section .fragment.shrink {
	opacity: 1;
	visibility: inherit;

	&.visible {
		transform: scale( 0.7 );
	}
}

.reveal .slides section .fragment.zoom-in {
	transform: scale( 0.1 );

	&.visible {
		transform: none;
	}
}

.reveal .slides section .fragment.fade-out {
	opacity: 1;
	visibility: inherit;

	&.visible {
		opacity: 0;
		visibility: hidden;
	}
}

.reveal .slides section .fragment.semi-fade-out {
	opacity: 1;
	visibility: inherit;

	&.visible {
		opacity: 0.5;
		visibility: inherit;
	}
}

.reveal .slides section .fragment.strike {
	opacity: 1;
	visibility: inherit;

	&.visible {
		text-decoration: line-through;
	}
}

.reveal .slides section .fragment.fade-up {
	transform: translate(0, 40px);

	&.visible {
		transform: translate(0, 0);
	}
}

.reveal .slides section .fragment.fade-down {
	transform: translate(0, -40px);

	&.visible {
		transform: translate(0, 0);
	}
}

.reveal .slides section .fragment.fade-right {
	transform: translate(-40px, 0);

	&.visible {
		transform: translate(0, 0);
	}
}

.reveal .slides section .fragment.fade-left {
	transform: translate(40px, 0);

	&.visible {
		transform: translate(0, 0);
	}
}

.reveal .slides section .fragment.fade-in-then-out,
.reveal .slides section .fragment.current-visible {
	opacity: 0;
	visibility: hidden;

	&.current-fragment {
		opacity: 1;
		visibility: inherit;
	}
}

.reveal .slides section .fragment.fade-in-then-semi-out {
	opacity: 0;
	visibility: hidden;

	&.visible {
		opacity: 0.5;
		visibility: inherit;
	}

	&.current-fragment {
		opacity: 1;
		visibility: inherit;
	}
}

.reveal .slides section .fragment.highlight-red,
.reveal .slides section .fragment.highlight-current-red,
.reveal .slides section .fragment.highlight-green,
.reveal .slides section .fragment.highlight-current-green,
.reveal .slides section .fragment.highlight-blue,
.reveal .slides section .fragment.highlight-current-blue {
	opacity: 1;
	visibility: inherit;
}
	.reveal .slides section .fragment.highlight-red.visible {
		color: #ff2c2d
	}
	.reveal .slides section .fragment.highlight-green.visible {
		color: #17ff2e;
	}
	.reveal .slides section .fragment.highlight-blue.visible {
		color: #1b91ff;
	}

.reveal .slides section .fragment.highlight-current-red.current-fragment {
	color: #ff2c2d
}
.reveal .slides section .fragment.highlight-current-green.current-fragment {
	color: #17ff2e;
}
.reveal .slides section .fragment.highlight-current-blue.current-fragment {
	color: #1b91ff;
}


/*********************************************
 * DEFAULT ELEMENT STYLES
 *********************************************/

/* Fixes issue in Chrome where italic fonts did not appear when printing to PDF */
.reveal:after {
  content: '';
  font-style: italic;
}

.reveal iframe {
	z-index: 1;
}

/** Prevents layering issues in certain browser/transition combinations */
.reveal a {
	position: relative;
}


/*********************************************
 * CONTROLS
 *********************************************/

@keyframes bounce-right {
	0%, 10%, 25%, 40%, 50% {transform: translateX(0);}
	20% {transform: translateX(10px);}
	30% {transform: translateX(-5px);}
}

@keyframes bounce-left {
	0%, 10%, 25%, 40%, 50% {transform: translateX(0);}
	20% {transform: translateX(-10px);}
	30% {transform: translateX(5px);}
}

@keyframes bounce-down {
	0%, 10%, 25%, 40%, 50% {transform: translateY(0);}
	20% {transform: translateY(10px);}
	30% {transform: translateY(-5px);}
}

$controlArrowSize: 3.6em;
$controlArrowSpacing: 1.4em;
$controlArrowLength: 2.6em;
$controlArrowThickness: 0.5em;
$controlsArrowAngle: 45deg;
$controlsArrowAngleHover: 40deg;
$controlsArrowAngleActive: 36deg;

@mixin controlsArrowTransform( $angle ) {
	&:before {
		transform: translateX(($controlArrowSize - $controlArrowLength)*0.5) translateY(($controlArrowSize - $controlArrowThickness)*0.5) rotate( $angle );
	}

	&:after {
		transform: translateX(($controlArrowSize - $controlArrowLength)*0.5) translateY(($controlArrowSize - $controlArrowThickness)*0.5) rotate( -$angle );
	}
}

.reveal .controls {
	$spacing: 12px;

	display: none;
	position: absolute;
	top: auto;
	bottom: $spacing;
	right: $spacing;
	left: auto;
	z-index: 11;
	color: #000;
	pointer-events: none;
	font-size: 10px;

	button {
		position: absolute;
		padding: 0;
		background-color: transparent;
		border: 0;
		outline: 0;
		cursor: pointer;
		color: currentColor;
		transform: scale(.9999);
		transition: color 0.2s ease,
					opacity 0.2s ease,
					transform 0.2s ease;
		z-index: 2; // above slides
		pointer-events: auto;
		font-size: inherit;

		visibility: hidden;
		opacity: 0;

		-webkit-appearance: none;
		-webkit-tap-highlight-color: rgba( 0, 0, 0, 0 );
	}

	.controls-arrow:before,
	.controls-arrow:after {
		content: '';
		position: absolute;
		top: 0;
		left: 0;
		width: $controlArrowLength;
		height: $controlArrowThickness;
		border-radius: $controlArrowThickness*0.5;
		background-color: currentColor;

		transition: all 0.15s ease, background-color 0.8s ease;
		transform-origin: math.div(floor(($controlArrowThickness*0.5)*10), 10) 50%;
		will-change: transform;
	}

	.controls-arrow {
		position: relative;
		width: $controlArrowSize;
		height: $controlArrowSize;

		@include controlsArrowTransform( $controlsArrowAngle );

		&:hover {
			@include controlsArrowTransform( $controlsArrowAngleHover );
		}

		&:active {
			@include controlsArrowTransform( $controlsArrowAngleActive );
		}
	}

	.navigate-left {
		right: $controlArrowSize + $controlArrowSpacing*2;
		bottom: $controlArrowSpacing + $controlArrowSize*0.5;
		transform: translateX( -10px );

		&.highlight {
			animation: bounce-left 2s 50 both ease-out;
		}
	}

	.navigate-right {
		right: 0;
		bottom: $controlArrowSpacing + $controlArrowSize*0.5;
		transform: translateX( 10px );

		.controls-arrow {
			transform: rotate( 180deg );
		}

		&.highlight {
			animation: bounce-right 2s 50 both ease-out;
		}
	}

	.navigate-up {
		right: $controlArrowSpacing + $controlArrowSize*0.5;
		bottom: $controlArrowSpacing*2 + $controlArrowSize;
		transform: translateY( -10px );

		.controls-arrow {
			transform: rotate( 90deg );
		}
	}

	.navigate-down {
		right: $controlArrowSpacing + $controlArrowSize*0.5;
		bottom: -$controlArrowSpacing;
		padding-bottom: $controlArrowSpacing;
		transform: translateY( 10px );

		.controls-arrow {
			transform: rotate( -90deg );
		}

		&.highlight {
			animation: bounce-down 2s 50 both ease-out;
		}
	}

	// Back arrow style: "faded":
	// Deemphasize backwards navigation arrows in favor of drawing
	// attention to forwards navigation
	&[data-controls-back-arrows="faded"] .navigate-up.enabled {
		opacity: 0.3;

		&:hover {
			opacity: 1;
		}
	}

	// Back arrow style: "hidden":
	// Never show arrows for backwards navigation
	&[data-controls-back-arrows="hidden"] .navigate-up.enabled {
		opacity: 0;
		visibility: hidden;
	}

	// Any control button that can be clicked is "enabled"
	.enabled {
		visibility: visible;
		opacity: 0.9;
		cursor: pointer;
		transform: none;
	}

	// Any control button that leads to showing or hiding
	// a fragment
	.enabled.fragmented {
		opacity: 0.5;
	}

	.enabled:hover,
	.enabled.fragmented:hover {
		opacity: 1;
	}
}

.reveal:not(.rtl) .controls {
	// Back arrow style: "faded":
	// Deemphasize left arrow
	&[data-controls-back-arrows="faded"] .navigate-left.enabled {
		opacity: 0.3;

		&:hover {
			opacity: 1;
		}
	}

	// Back arrow style: "hidden":
	// Never show left arrow
	&[data-controls-back-arrows="hidden"] .navigate-left.enabled {
		opacity: 0;
		visibility: hidden;
	}
}

.reveal.rtl .controls {
	// Back arrow style: "faded":
	// Deemphasize right arrow in RTL mode
	&[data-controls-back-arrows="faded"] .navigate-right.enabled  {
		opacity: 0.3;

		&:hover {
			opacity: 1;
		}
	}

	// Back arrow style: "hidden":
	// Never show right arrow in RTL mode
	&[data-controls-back-arrows="hidden"] .navigate-right.enabled {
		opacity: 0;
		visibility: hidden;
	}
}

.reveal[data-navigation-mode="linear"].has-horizontal-slides .navigate-up,
.reveal[data-navigation-mode="linear"].has-horizontal-slides .navigate-down {
	display: none;
}

// Adjust the layout when there are no vertical slides
.reveal[data-navigation-mode="linear"].has-horizontal-slides .navigate-left,
.reveal:not(.has-vertical-slides) .controls .navigate-left {
	bottom: $controlArrowSpacing;
	right: 0.5em + $controlArrowSpacing + $controlArrowSize;
}

.reveal[data-navigation-mode="linear"].has-horizontal-slides .navigate-right,
.reveal:not(.has-vertical-slides) .controls .navigate-right {
	bottom: $controlArrowSpacing;
	right: 0.5em;
}

// Adjust the layout when there are no horizontal slides
.reveal:not(.has-horizontal-slides) .controls .navigate-up {
	right: $controlArrowSpacing;
	bottom: $controlArrowSpacing + $controlArrowSize;
}
.reveal:not(.has-horizontal-slides) .controls .navigate-down {
	right: $controlArrowSpacing;
	bottom: 0.5em;
}

// Invert arrows based on background color
.reveal.has-dark-background .controls {
	color: #fff;
}
.reveal.has-light-background .controls {
	color: #000;
}

// Disable active states on touch devices
.reveal.no-hover .controls .controls-arrow:hover,
.reveal.no-hover .controls .controls-arrow:active {
	@include controlsArrowTransform( $controlsArrowAngle );
}

// Edge aligned controls layout
@media screen and (min-width: 500px) {

	$spacing: 0.8em;

	.reveal .controls[data-controls-layout="edges"] {
		& {
			top: 0;
			right: 0;
			bottom: 0;
			left: 0;
		}

		.navigate-left,
		.navigate-right,
		.navigate-up,
		.navigate-down {
			bottom: auto;
			right: auto;
		}

		.navigate-left {
			top: 50%;
			left: $spacing;
			margin-top: -$controlArrowSize*0.5;
		}

		.navigate-right {
			top: 50%;
			right: $spacing;
			margin-top: -$controlArrowSize*0.5;
		}

		.navigate-up {
			top: $spacing;
			left: 50%;
			margin-left: -$controlArrowSize*0.5;
		}

		.navigate-down {
			bottom: $spacing - $controlArrowSpacing + 0.3em;
			left: 50%;
			margin-left: -$controlArrowSize*0.5;
		}
	}

}


/*********************************************
 * PROGRESS BAR
 *********************************************/

.reveal .progress {
	position: absolute;
	display: none;
	height: 3px;
	width: 100%;
	bottom: 0;
	left: 0;
	z-index: 10;

	background-color: rgba( 0, 0, 0, 0.2 );
	color: #fff;
}
	.reveal .progress:after {
		content: '';
		display: block;
		position: absolute;
		height: 10px;
		width: 100%;
		top: -10px;
	}
	.reveal .progress span {
		display: block;
		height: 100%;
		width: 100%;

		background-color: currentColor;
		transition: transform 800ms cubic-bezier(0.260, 0.860, 0.440, 0.985);
		transform-origin: 0 0;
		transform: scaleX(0);
	}

/*********************************************
 * SLIDE NUMBER
 *********************************************/

.reveal .slide-number {
	position: absolute;
	display: block;
	right: 8px;
	bottom: 8px;
	z-index: 31;
	font-family: Helvetica, sans-serif;
	font-size: 12px;
	line-height: 1;
	color: #fff;
	background-color: rgba( 0, 0, 0, 0.4 );
	padding: 5px;
}

.reveal .slide-number a {
	color: currentColor;
}

.reveal .slide-number-delimiter {
	margin: 0 3px;
}

/*********************************************
 * SLIDES
 *********************************************/

.reveal {
	position: relative;
	width: 100%;
	height: 100%;
	overflow: hidden;
	touch-action: pinch-zoom;
}

// Swiping on an embedded deck should not block page scrolling
.reveal.embedded {
	touch-action: pan-y;
}

.reveal .slides {
	position: absolute;
	width: 100%;
	height: 100%;
	top: 0;
	right: 0;
	bottom: 0;
	left: 0;
	margin: auto;
	pointer-events: none;

	overflow: visible;
	z-index: 1;
	text-align: center;
	perspective: 600px;
	perspective-origin: 50% 40%;
}

.reveal .slides>section {
	perspective: 600px;
}

.reveal .slides>section,
.reveal .slides>section>section {
	display: none;
	position: absolute;
	width: 100%;
	pointer-events: auto;

	z-index: 10;
	transform-style: flat;
	transition: transform-origin 800ms cubic-bezier(0.260, 0.860, 0.440, 0.985),
				transform 800ms cubic-bezier(0.260, 0.860, 0.440, 0.985),
				visibility 800ms cubic-bezier(0.260, 0.860, 0.440, 0.985),
				opacity 800ms cubic-bezier(0.260, 0.860, 0.440, 0.985);
}

/* Global transition speed settings */
.reveal[data-transition-speed="fast"] .slides section {
	transition-duration: 400ms;
}
.reveal[data-transition-speed="slow"] .slides section {
	transition-duration: 1200ms;
}

/* Slide-specific transition speed overrides */
.reveal .slides section[data-transition-speed="fast"] {
	transition-duration: 400ms;
}
.reveal .slides section[data-transition-speed="slow"] {
	transition-duration: 1200ms;
}

.reveal .slides>section.stack {
	padding-top: 0;
	padding-bottom: 0;
	pointer-events: none;
	height: 100%;
}

.reveal .slides>section.present,
.reveal .slides>section>section.present {
	display: block;
	z-index: 11;
	opacity: 1;
}

.reveal .slides>section:empty,
.reveal .slides>section>section:empty,
.reveal .slides>section[data-background-interactive],
.reveal .slides>section>section[data-background-interactive] {
	pointer-events: none;
}

.reveal.center,
.reveal.center .slides,
.reveal.center .slides section {
	min-height: 0 !important;
}

/* Don't allow interaction with invisible slides */
.reveal .slides>section:not(.present),
.reveal .slides>section>section:not(.present) {
	pointer-events: none;
}

.reveal.overview .slides>section,
.reveal.overview .slides>section>section {
	pointer-events: auto;
}

.reveal .slides>section.past,
.reveal .slides>section.future,
.reveal .slides>section>section.past,
.reveal .slides>section>section.future {
	opacity: 0;
}


/*********************************************
 * Mixins for readability of transitions
 *********************************************/

@mixin transition-global($style) {
	.reveal .slides section[data-transition=#{$style}],
	.reveal.#{$style} .slides section:not([data-transition]) {
		@content;
	}
}
@mixin transition-stack($style) {
	.reveal .slides section[data-transition=#{$style}].stack,
	.reveal.#{$style} .slides section.stack {
		@content;
	}
}
@mixin transition-horizontal-past($style) {
	.reveal .slides>section[data-transition=#{$style}].past,
	.reveal .slides>section[data-transition~=#{$style}-out].past,
	.reveal.#{$style} .slides>section:not([data-transition]).past {
		@content;
	}
}
@mixin transition-horizontal-future($style) {
	.reveal .slides>section[data-transition=#{$style}].future,
	.reveal .slides>section[data-transition~=#{$style}-in].future,
	.reveal.#{$style} .slides>section:not([data-transition]).future {
		@content;
	}
}

@mixin transition-vertical-past($style) {
	.reveal .slides>section>section[data-transition=#{$style}].past,
	.reveal .slides>section>section[data-transition~=#{$style}-out].past,
	.reveal.#{$style} .slides>section>section:not([data-transition]).past {
		@content;
	}
}
@mixin transition-vertical-future($style) {
	.reveal .slides>section>section[data-transition=#{$style}].future,
	.reveal .slides>section>section[data-transition~=#{$style}-in].future,
	.reveal.#{$style} .slides>section>section:not([data-transition]).future {
		@content;
	}
}

/*********************************************
 * SLIDE TRANSITION
 * Aliased 'linear' for backwards compatibility
 *********************************************/

@each $stylename in slide, linear {
	@include transition-horizontal-past(#{$stylename}) {
		transform: translate(-150%, 0);
	}
	@include transition-horizontal-future(#{$stylename}) {
		transform: translate(150%, 0);
	}
	@include transition-vertical-past(#{$stylename}) {
		transform: translate(0, -150%);
	}
	@include transition-vertical-future(#{$stylename}) {
		transform: translate(0, 150%);
	}
}

/*********************************************
 * CONVEX TRANSITION
 * Aliased 'default' for backwards compatibility
 *********************************************/

@each $stylename in default, convex {
	@include transition-stack(#{$stylename}) {
		transform-style: preserve-3d;
	}

	@include transition-horizontal-past(#{$stylename}) {
		transform: translate3d(-100%, 0, 0) rotateY(-90deg) translate3d(-100%, 0, 0);
	}
	@include transition-horizontal-future(#{$stylename}) {
		transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 0, 0);
	}
	@include transition-vertical-past(#{$stylename}) {
		transform: translate3d(0, -300px, 0) rotateX(70deg) translate3d(0, -300px, 0);
	}
	@include transition-vertical-future(#{$stylename}) {
		transform: translate3d(0, 300px, 0) rotateX(-70deg) translate3d(0, 300px, 0);
	}
}

/*********************************************
 * CONCAVE TRANSITION
 *********************************************/

@include transition-stack(concave) {
	transform-style: preserve-3d;
}

@include transition-horizontal-past(concave) {
	transform: translate3d(-100%, 0, 0) rotateY(90deg) translate3d(-100%, 0, 0);
}
@include transition-horizontal-future(concave) {
	transform: translate3d(100%, 0, 0) rotateY(-90deg) translate3d(100%, 0, 0);
}
@include transition-vertical-past(concave) {
	transform: translate3d(0, -80%, 0) rotateX(-70deg) translate3d(0, -80%, 0);
}
@include transition-vertical-future(concave) {
	transform: translate3d(0, 80%, 0) rotateX(70deg) translate3d(0, 80%, 0);
}


/*********************************************
 * ZOOM TRANSITION
 *********************************************/

@include transition-global(zoom) {
	transition-timing-function: ease;
}
@include transition-horizontal-past(zoom) {
	visibility: hidden;
	transform: scale(16);
}
@include transition-horizontal-future(zoom) {
	visibility: hidden;
	transform: scale(0.2);
}
@include transition-vertical-past(zoom) {
	transform: scale(16);
}
@include transition-vertical-future(zoom) {
	transform: scale(0.2);
}


/*********************************************
 * CUBE TRANSITION
 *
 * WARNING:
 * this is deprecated and will be removed in a
 * future version.
 *********************************************/

.reveal.cube .slides {
	perspective: 1300px;
}

.reveal.cube .slides section {
	padding: 30px;
	min-height: 700px;
	backface-visibility: hidden;
	box-sizing: border-box;
	transform-style: preserve-3d;
}
	.reveal.center.cube .slides section {
		min-height: 0;
	}
	.reveal.cube .slides section:not(.stack):before {
		content: '';
		position: absolute;
		display: block;
		width: 100%;
		height: 100%;
		left: 0;
		top: 0;
		background: rgba(0,0,0,0.1);
		border-radius: 4px;
		transform: translateZ( -20px );
	}
	.reveal.cube .slides section:not(.stack):after {
		content: '';
		position: absolute;
		display: block;
		width: 90%;
		height: 30px;
		left: 5%;
		bottom: 0;
		background: none;
		z-index: 1;

		border-radius: 4px;
		box-shadow: 0px 95px 25px rgba(0,0,0,0.2);
		transform: translateZ(-90px) rotateX( 65deg );
	}

.reveal.cube .slides>section.stack {
	padding: 0;
	background: none;
}

.reveal.cube .slides>section.past {
	transform-origin: 100% 0%;
	transform: translate3d(-100%, 0, 0) rotateY(-90deg);
}

.reveal.cube .slides>section.future {
	transform-origin: 0% 0%;
	transform: translate3d(100%, 0, 0) rotateY(90deg);
}

.reveal.cube .slides>section>section.past {
	transform-origin: 0% 100%;
	transform: translate3d(0, -100%, 0) rotateX(90deg);
}

.reveal.cube .slides>section>section.future {
	transform-origin: 0% 0%;
	transform: translate3d(0, 100%, 0) rotateX(-90deg);
}


/*********************************************
 * PAGE TRANSITION
 *
 * WARNING:
 * this is deprecated and will be removed in a
 * future version.
 *********************************************/

.reveal.page .slides {
	perspective-origin: 0% 50%;
	perspective: 3000px;
}

.reveal.page .slides section {
	padding: 30px;
	min-height: 700px;
	box-sizing: border-box;
	transform-style: preserve-3d;
}
	.reveal.page .slides section.past {
		z-index: 12;
	}
	.reveal.page .slides section:not(.stack):before {
		content: '';
		position: absolute;
		display: block;
		width: 100%;
		height: 100%;
		left: 0;
		top: 0;
		background: rgba(0,0,0,0.1);
		transform: translateZ( -20px );
	}
	.reveal.page .slides section:not(.stack):after {
		content: '';
		position: absolute;
		display: block;
		width: 90%;
		height: 30px;
		left: 5%;
		bottom: 0;
		background: none;
		z-index: 1;

		border-radius: 4px;
		box-shadow: 0px 95px 25px rgba(0,0,0,0.2);

		-webkit-transform: translateZ(-90px) rotateX( 65deg );
	}

.reveal.page .slides>section.stack {
	padding: 0;
	background: none;
}

.reveal.page .slides>section.past {
	transform-origin: 0% 0%;
	transform: translate3d(-40%, 0, 0) rotateY(-80deg);
}

.reveal.page .slides>section.future {
	transform-origin: 100% 0%;
	transform: translate3d(0, 0, 0);
}

.reveal.page .slides>section>section.past {
	transform-origin: 0% 0%;
	transform: translate3d(0, -40%, 0) rotateX(80deg);
}

.reveal.page .slides>section>section.future {
	transform-origin: 0% 100%;
	transform: translate3d(0, 0, 0);
}


/*********************************************
 * FADE TRANSITION
 *********************************************/

.reveal .slides section[data-transition=fade],
.reveal.fade .slides section:not([data-transition]),
.reveal.fade .slides>section>section:not([data-transition]) {
	transform: none;
	transition: opacity 0.5s;
}


.reveal.fade.overview .slides section,
.reveal.fade.overview .slides>section>section {
	transition: none;
}


/*********************************************
 * NO TRANSITION
 *********************************************/

@include transition-global(none) {
	transform: none;
	transition: none;
}


/*********************************************
 * PAUSED MODE
 *********************************************/

.reveal .pause-overlay {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background: black;
	visibility: hidden;
	opacity: 0;
	z-index: 100;
	transition: all 1s ease;
}

.reveal .pause-overlay .resume-button {
	position: absolute;
	bottom: 20px;
	right: 20px;
	color: #ccc;
	border-radius: 2px;
	padding: 6px 14px;
	border: 2px solid #ccc;
	font-size: 16px;
	background: transparent;
	cursor: pointer;

	&:hover {
		color: #fff;
		border-color: #fff;
	}
}

.reveal.paused .pause-overlay {
	visibility: visible;
	opacity: 1;
}


/*********************************************
 * FALLBACK
 *********************************************/

.reveal .no-transition,
.reveal .no-transition *,
.reveal .slides.disable-slide-transitions section {
	transition: none !important;
}

.reveal .slides.disable-slide-transitions section {
	transform: none !important;
}


/*********************************************
 * PER-SLIDE BACKGROUNDS
 *********************************************/

.reveal .backgrounds {
	position: absolute;
	width: 100%;
	height: 100%;
	top: 0;
	left: 0;
	perspective: 600px;
}
	.reveal .slide-background {
		display: none;
		position: absolute;
		width: 100%;
		height: 100%;
		opacity: 0;
		visibility: hidden;
		overflow: hidden;

		background-color: rgba( 0, 0, 0, 0 );

		transition: all 800ms cubic-bezier(0.260, 0.860, 0.440, 0.985);
	}

	.reveal .slide-background-content {
		position: absolute;
		width: 100%;
		height: 100%;

		background-position: 50% 50%;
		background-repeat: no-repeat;
		background-size: cover;
	}

	.reveal .slide-background.stack {
		display: block;
	}

	.reveal .slide-background.present {
		opacity: 1;
		visibility: visible;
		z-index: 2;
	}

	.print-pdf .reveal .slide-background {
		opacity: 1 !important;
		visibility: visible !important;
	}

/* Video backgrounds */
.reveal .slide-background video {
	position: absolute;
	width: 100%;
	height: 100%;
	max-width: none;
	max-height: none;
	top: 0;
	left: 0;
	object-fit: cover;
}
	.reveal .slide-background[data-background-size="contain"] video {
		object-fit: contain;
	}

/* Immediate transition style */
.reveal[data-background-transition=none]>.backgrounds .slide-background:not([data-background-transition]),
.reveal>.backgrounds .slide-background[data-background-transition=none] {
	transition: none;
}

/* Slide */
.reveal[data-background-transition=slide]>.backgrounds .slide-background:not([data-background-transition]),
.reveal>.backgrounds .slide-background[data-background-transition=slide] {
	opacity: 1;
}
	.reveal[data-background-transition=slide]>.backgrounds .slide-background.past:not([data-background-transition]),
	.reveal>.backgrounds .slide-background.past[data-background-transition=slide] {
		transform: translate(-100%, 0);
	}
	.reveal[data-background-transition=slide]>.backgrounds .slide-background.future:not([data-background-transition]),
	.reveal>.backgrounds .slide-background.future[data-background-transition=slide] {
		transform: translate(100%, 0);
	}

	.reveal[data-background-transition=slide]>.backgrounds .slide-background>.slide-background.past:not([data-background-transition]),
	.reveal>.backgrounds .slide-background>.slide-background.past[data-background-transition=slide] {
		transform: translate(0, -100%);
	}
	.reveal[data-background-transition=slide]>.backgrounds .slide-background>.slide-background.future:not([data-background-transition]),
	.reveal>.backgrounds .slide-background>.slide-background.future[data-background-transition=slide] {
		transform: translate(0, 100%);
	}


/* Convex */
.reveal[data-background-transition=convex]>.backgrounds .slide-background.past:not([data-background-transition]),
.reveal>.backgrounds .slide-background.past[data-background-transition=convex] {
	opacity: 0;
	transform: translate3d(-100%, 0, 0) rotateY(-90deg) translate3d(-100%, 0, 0);
}
.reveal[data-background-transition=convex]>.backgrounds .slide-background.future:not([data-background-transition]),
.reveal>.backgrounds .slide-background.future[data-background-transition=convex] {
	opacity: 0;
	transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 0, 0);
}

.reveal[data-background-transition=convex]>.backgrounds .slide-background>.slide-background.past:not([data-background-transition]),
.reveal>.backgrounds .slide-background>.slide-background.past[data-background-transition=convex] {
	opacity: 0;
	transform: translate3d(0, -100%, 0) rotateX(90deg) translate3d(0, -100%, 0);
}
.reveal[data-background-transition=convex]>.backgrounds .slide-background>.slide-background.future:not([data-background-transition]),
.reveal>.backgrounds .slide-background>.slide-background.future[data-background-transition=convex] {
	opacity: 0;
	transform: translate3d(0, 100%, 0) rotateX(-90deg) translate3d(0, 100%, 0);
}


/* Concave */
.reveal[data-background-transition=concave]>.backgrounds .slide-background.past:not([data-background-transition]),
.reveal>.backgrounds .slide-background.past[data-background-transition=concave] {
	opacity: 0;
	transform: translate3d(-100%, 0, 0) rotateY(90deg) translate3d(-100%, 0, 0);
}
.reveal[data-background-transition=concave]>.backgrounds .slide-background.future:not([data-background-transition]),
.reveal>.backgrounds .slide-background.future[data-background-transition=concave] {
	opacity: 0;
	transform: translate3d(100%, 0, 0) rotateY(-90deg) translate3d(100%, 0, 0);
}

.reveal[data-background-transition=concave]>.backgrounds .slide-background>.slide-background.past:not([data-background-transition]),
.reveal>.backgrounds .slide-background>.slide-background.past[data-background-transition=concave] {
	opacity: 0;
	transform: translate3d(0, -100%, 0) rotateX(-90deg) translate3d(0, -100%, 0);
}
.reveal[data-background-transition=concave]>.backgrounds .slide-background>.slide-background.future:not([data-background-transition]),
.reveal>.backgrounds .slide-background>.slide-background.future[data-background-transition=concave] {
	opacity: 0;
	transform: translate3d(0, 100%, 0) rotateX(90deg) translate3d(0, 100%, 0);
}

/* Zoom */
.reveal[data-background-transition=zoom]>.backgrounds .slide-background:not([data-background-transition]),
.reveal>.backgrounds .slide-background[data-background-transition=zoom] {
	transition-timing-function: ease;
}

.reveal[data-background-transition=zoom]>.backgrounds .slide-background.past:not([data-background-transition]),
.reveal>.backgrounds .slide-background.past[data-background-transition=zoom] {
	opacity: 0;
	visibility: hidden;
	transform: scale(16);
}
.reveal[data-background-transition=zoom]>.backgrounds .slide-background.future:not([data-background-transition]),
.reveal>.backgrounds .slide-background.future[data-background-transition=zoom] {
	opacity: 0;
	visibility: hidden;
	transform: scale(0.2);
}

.reveal[data-background-transition=zoom]>.backgrounds .slide-background>.slide-background.past:not([data-background-transition]),
.reveal>.backgrounds .slide-background>.slide-background.past[data-background-transition=zoom] {
	opacity: 0;
		visibility: hidden;
		transform: scale(16);
}
.reveal[data-background-transition=zoom]>.backgrounds .slide-background>.slide-background.future:not([data-background-transition]),
.reveal>.backgrounds .slide-background>.slide-background.future[data-background-transition=zoom] {
	opacity: 0;
	visibility: hidden;
	transform: scale(0.2);
}


/* Global transition speed settings */
.reveal[data-transition-speed="fast"]>.backgrounds .slide-background {
	transition-duration: 400ms;
}
.reveal[data-transition-speed="slow"]>.backgrounds .slide-background {
	transition-duration: 1200ms;
}


/*********************************************
 * AUTO ANIMATE
 *********************************************/

.reveal [data-auto-animate-target^="unmatched"] {
	will-change: opacity;
}

.reveal section[data-auto-animate]:not(.stack):not([data-auto-animate="running"]) [data-auto-animate-target^="unmatched"] {
	opacity: 0;
}


/*********************************************
 * OVERVIEW
 *********************************************/

.reveal.overview {
	perspective-origin: 50% 50%;
	perspective: 700px;

	.slides {
		// Fixes overview rendering errors in FF48+, not applied to
		// other browsers since it degrades performance
		-moz-transform-style: preserve-3d;
	}

	.slides section {
		height: 100%;
		top: 0 !important;
		opacity: 1 !important;
		overflow: hidden;
		visibility: visible !important;
		cursor: pointer;
		box-sizing: border-box;
	}
	.slides section:hover,
	.slides section.present {
		outline: 10px solid rgba(150,150,150,0.4);
		outline-offset: 10px;
	}
	.slides section .fragment {
		opacity: 1;
		transition: none;
	}
	.slides section:after,
	.slides section:before {
		display: none !important;
	}
	.slides>section.stack {
		padding: 0;
		top: 0 !important;
		background: none;
		outline: none;
		overflow: visible;
	}

	.backgrounds {
		perspective: inherit;

		// Fixes overview rendering errors in FF48+, not applied to
		// other browsers since it degrades performance
		-moz-transform-style: preserve-3d;
	}

	.backgrounds .slide-background {
		opacity: 1;
		visibility: visible;

		// This can't be applied to the slide itself in Safari
		outline: 10px solid rgba(150,150,150,0.1);
		outline-offset: 10px;
	}

	.backgrounds .slide-background.stack {
		overflow: visible;
	}
}

// Disable transitions transitions while we're activating
// or deactivating the overview mode.
.reveal.overview .slides section,
.reveal.overview-deactivating .slides section {
	transition: none;
}

.reveal.overview .backgrounds .slide-background,
.reveal.overview-deactivating .backgrounds .slide-background {
	transition: none;
}


/*********************************************
 * RTL SUPPORT
 *********************************************/

.reveal.rtl .slides,
.reveal.rtl .slides h1,
.reveal.rtl .slides h2,
.reveal.rtl .slides h3,
.reveal.rtl .slides h4,
.reveal.rtl .slides h5,
.reveal.rtl .slides h6 {
	direction: rtl;
	font-family: sans-serif;
}

.reveal.rtl pre,
.reveal.rtl code {
	direction: ltr;
}

.reveal.rtl ol,
.reveal.rtl ul {
	text-align: right;
}

.reveal.rtl .progress span {
	transform-origin: 100% 0;
}

/*********************************************
 * PARALLAX BACKGROUND
 *********************************************/

.reveal.has-parallax-background .backgrounds {
	transition: all 0.8s ease;
}

/* Global transition speed settings */
.reveal.has-parallax-background[data-transition-speed="fast"] .backgrounds {
	transition-duration: 400ms;
}
.reveal.has-parallax-background[data-transition-speed="slow"] .backgrounds {
	transition-duration: 1200ms;
}


/*********************************************
 * OVERLAY FOR LINK PREVIEWS AND HELP
 *********************************************/

$overlayHeaderHeight: 40px;
$overlayHeaderPadding: 5px;

.reveal > .overlay {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	z-index: 1000;
	background: rgba( 0, 0, 0, 0.9 );
	transition: all 0.3s ease;
}

	.reveal > .overlay .spinner {
		position: absolute;
		display: block;
		top: 50%;
		left: 50%;
		width: 32px;
		height: 32px;
		margin: -16px 0 0 -16px;
		z-index: 10;
		background-image: url(data:image/gif;base64,R0lGODlhIAAgAPMAAJmZmf%2F%2F%2F6%2Bvr8nJybW1tcDAwOjo6Nvb26ioqKOjo7Ozs%2FLy8vz8%2FAAAAAAAAAAAACH%2FC05FVFNDQVBFMi4wAwEAAAAh%2FhpDcmVhdGVkIHdpdGggYWpheGxvYWQuaW5mbwAh%2BQQJCgAAACwAAAAAIAAgAAAE5xDISWlhperN52JLhSSdRgwVo1ICQZRUsiwHpTJT4iowNS8vyW2icCF6k8HMMBkCEDskxTBDAZwuAkkqIfxIQyhBQBFvAQSDITM5VDW6XNE4KagNh6Bgwe60smQUB3d4Rz1ZBApnFASDd0hihh12BkE9kjAJVlycXIg7CQIFA6SlnJ87paqbSKiKoqusnbMdmDC2tXQlkUhziYtyWTxIfy6BE8WJt5YJvpJivxNaGmLHT0VnOgSYf0dZXS7APdpB309RnHOG5gDqXGLDaC457D1zZ%2FV%2FnmOM82XiHRLYKhKP1oZmADdEAAAh%2BQQJCgAAACwAAAAAIAAgAAAE6hDISWlZpOrNp1lGNRSdRpDUolIGw5RUYhhHukqFu8DsrEyqnWThGvAmhVlteBvojpTDDBUEIFwMFBRAmBkSgOrBFZogCASwBDEY%2FCZSg7GSE0gSCjQBMVG023xWBhklAnoEdhQEfyNqMIcKjhRsjEdnezB%2BA4k8gTwJhFuiW4dokXiloUepBAp5qaKpp6%2BHo7aWW54wl7obvEe0kRuoplCGepwSx2jJvqHEmGt6whJpGpfJCHmOoNHKaHx61WiSR92E4lbFoq%2BB6QDtuetcaBPnW6%2BO7wDHpIiK9SaVK5GgV543tzjgGcghAgAh%2BQQJCgAAACwAAAAAIAAgAAAE7hDISSkxpOrN5zFHNWRdhSiVoVLHspRUMoyUakyEe8PTPCATW9A14E0UvuAKMNAZKYUZCiBMuBakSQKG8G2FzUWox2AUtAQFcBKlVQoLgQReZhQlCIJesQXI5B0CBnUMOxMCenoCfTCEWBsJColTMANldx15BGs8B5wlCZ9Po6OJkwmRpnqkqnuSrayqfKmqpLajoiW5HJq7FL1Gr2mMMcKUMIiJgIemy7xZtJsTmsM4xHiKv5KMCXqfyUCJEonXPN2rAOIAmsfB3uPoAK%2B%2BG%2Bw48edZPK%2BM6hLJpQg484enXIdQFSS1u6UhksENEQAAIfkECQoAAAAsAAAAACAAIAAABOcQyEmpGKLqzWcZRVUQnZYg1aBSh2GUVEIQ2aQOE%2BG%2BcD4ntpWkZQj1JIiZIogDFFyHI0UxQwFugMSOFIPJftfVAEoZLBbcLEFhlQiqGp1Vd140AUklUN3eCA51C1EWMzMCezCBBmkxVIVHBWd3HHl9JQOIJSdSnJ0TDKChCwUJjoWMPaGqDKannasMo6WnM562R5YluZRwur0wpgqZE7NKUm%2BFNRPIhjBJxKZteWuIBMN4zRMIVIhffcgojwCF117i4nlLnY5ztRLsnOk%2BaV%2BoJY7V7m76PdkS4trKcdg0Zc0tTcKkRAAAIfkECQoAAAAsAAAAACAAIAAABO4QyEkpKqjqzScpRaVkXZWQEximw1BSCUEIlDohrft6cpKCk5xid5MNJTaAIkekKGQkWyKHkvhKsR7ARmitkAYDYRIbUQRQjWBwJRzChi9CRlBcY1UN4g0%2FVNB0AlcvcAYHRyZPdEQFYV8ccwR5HWxEJ02YmRMLnJ1xCYp0Y5idpQuhopmmC2KgojKasUQDk5BNAwwMOh2RtRq5uQuPZKGIJQIGwAwGf6I0JXMpC8C7kXWDBINFMxS4DKMAWVWAGYsAdNqW5uaRxkSKJOZKaU3tPOBZ4DuK2LATgJhkPJMgTwKCdFjyPHEnKxFCDhEAACH5BAkKAAAALAAAAAAgACAAAATzEMhJaVKp6s2nIkolIJ2WkBShpkVRWqqQrhLSEu9MZJKK9y1ZrqYK9WiClmvoUaF8gIQSNeF1Er4MNFn4SRSDARWroAIETg1iVwuHjYB1kYc1mwruwXKC9gmsJXliGxc%2BXiUCby9ydh1sOSdMkpMTBpaXBzsfhoc5l58Gm5yToAaZhaOUqjkDgCWNHAULCwOLaTmzswadEqggQwgHuQsHIoZCHQMMQgQGubVEcxOPFAcMDAYUA85eWARmfSRQCdcMe0zeP1AAygwLlJtPNAAL19DARdPzBOWSm1brJBi45soRAWQAAkrQIykShQ9wVhHCwCQCACH5BAkKAAAALAAAAAAgACAAAATrEMhJaVKp6s2nIkqFZF2VIBWhUsJaTokqUCoBq%2BE71SRQeyqUToLA7VxF0JDyIQh%2FMVVPMt1ECZlfcjZJ9mIKoaTl1MRIl5o4CUKXOwmyrCInCKqcWtvadL2SYhyASyNDJ0uIiRMDjI0Fd30%2FiI2UA5GSS5UDj2l6NoqgOgN4gksEBgYFf0FDqKgHnyZ9OX8HrgYHdHpcHQULXAS2qKpENRg7eAMLC7kTBaixUYFkKAzWAAnLC7FLVxLWDBLKCwaKTULgEwbLA4hJtOkSBNqITT3xEgfLpBtzE%2FjiuL04RGEBgwWhShRgQExHBAAh%2BQQJCgAAACwAAAAAIAAgAAAE7xDISWlSqerNpyJKhWRdlSAVoVLCWk6JKlAqAavhO9UkUHsqlE6CwO1cRdCQ8iEIfzFVTzLdRAmZX3I2SfZiCqGk5dTESJeaOAlClzsJsqwiJwiqnFrb2nS9kmIcgEsjQydLiIlHehhpejaIjzh9eomSjZR%2BipslWIRLAgMDOR2DOqKogTB9pCUJBagDBXR6XB0EBkIIsaRsGGMMAxoDBgYHTKJiUYEGDAzHC9EACcUGkIgFzgwZ0QsSBcXHiQvOwgDdEwfFs0sDzt4S6BK4xYjkDOzn0unFeBzOBijIm1Dgmg5YFQwsCMjp1oJ8LyIAACH5BAkKAAAALAAAAAAgACAAAATwEMhJaVKp6s2nIkqFZF2VIBWhUsJaTokqUCoBq%2BE71SRQeyqUToLA7VxF0JDyIQh%2FMVVPMt1ECZlfcjZJ9mIKoaTl1MRIl5o4CUKXOwmyrCInCKqcWtvadL2SYhyASyNDJ0uIiUd6GGl6NoiPOH16iZKNlH6KmyWFOggHhEEvAwwMA0N9GBsEC6amhnVcEwavDAazGwIDaH1ipaYLBUTCGgQDA8NdHz0FpqgTBwsLqAbWAAnIA4FWKdMLGdYGEgraigbT0OITBcg5QwPT4xLrROZL6AuQAPUS7bxLpoWidY0JtxLHKhwwMJBTHgPKdEQAACH5BAkKAAAALAAAAAAgACAAAATrEMhJaVKp6s2nIkqFZF2VIBWhUsJaTokqUCoBq%2BE71SRQeyqUToLA7VxF0JDyIQh%2FMVVPMt1ECZlfcjZJ9mIKoaTl1MRIl5o4CUKXOwmyrCInCKqcWtvadL2SYhyASyNDJ0uIiUd6GAULDJCRiXo1CpGXDJOUjY%2BYip9DhToJA4RBLwMLCwVDfRgbBAaqqoZ1XBMHswsHtxtFaH1iqaoGNgAIxRpbFAgfPQSqpbgGBqUD1wBXeCYp1AYZ19JJOYgH1KwA4UBvQwXUBxPqVD9L3sbp2BNk2xvvFPJd%2BMFCN6HAAIKgNggY0KtEBAAh%2BQQJCgAAACwAAAAAIAAgAAAE6BDISWlSqerNpyJKhWRdlSAVoVLCWk6JKlAqAavhO9UkUHsqlE6CwO1cRdCQ8iEIfzFVTzLdRAmZX3I2SfYIDMaAFdTESJeaEDAIMxYFqrOUaNW4E4ObYcCXaiBVEgULe0NJaxxtYksjh2NLkZISgDgJhHthkpU4mW6blRiYmZOlh4JWkDqILwUGBnE6TYEbCgevr0N1gH4At7gHiRpFaLNrrq8HNgAJA70AWxQIH1%2BvsYMDAzZQPC9VCNkDWUhGkuE5PxJNwiUK4UfLzOlD4WvzAHaoG9nxPi5d%2BjYUqfAhhykOFwJWiAAAIfkECQoAAAAsAAAAACAAIAAABPAQyElpUqnqzaciSoVkXVUMFaFSwlpOCcMYlErAavhOMnNLNo8KsZsMZItJEIDIFSkLGQoQTNhIsFehRww2CQLKF0tYGKYSg%2BygsZIuNqJksKgbfgIGepNo2cIUB3V1B3IvNiBYNQaDSTtfhhx0CwVPI0UJe0%2Bbm4g5VgcGoqOcnjmjqDSdnhgEoamcsZuXO1aWQy8KAwOAuTYYGwi7w5h%2BKr0SJ8MFihpNbx%2B4Erq7BYBuzsdiH1jCAzoSfl0rVirNbRXlBBlLX%2BBP0XJLAPGzTkAuAOqb0WT5AH7OcdCm5B8TgRwSRKIHQtaLCwg1RAAAOwAAAAAAAAAAAA%3D%3D);

		visibility: visible;
		opacity: 0.6;
		transition: all 0.3s ease;
	}

	.reveal > .overlay header {
		position: absolute;
		left: 0;
		top: 0;
		width: 100%;
		padding: $overlayHeaderPadding;
		z-index: 2;
		box-sizing: border-box;
	}
		.reveal > .overlay header a {
			display: inline-block;
			width: $overlayHeaderHeight;
			height: $overlayHeaderHeight;
			line-height: 36px;
			padding: 0 10px;
			float: right;
			opacity: 0.6;

			box-sizing: border-box;
		}
			.reveal > .overlay header a:hover {
				opacity: 1;
			}
			.reveal > .overlay header a .icon {
				display: inline-block;
				width: 20px;
				height: 20px;

				background-position: 50% 50%;
				background-size: 100%;
				background-repeat: no-repeat;
			}
			.reveal > .overlay header a.close .icon {
				background-image: url(data:image/png;base64,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);
			}
			.reveal > .overlay header a.external .icon {
				background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAAcElEQVRYR+2WSQoAIQwEzf8f7XiOMkUQxUPlGkM3hVmiQfQR9GYnH1SsAQlI4DiBqkCMoNb9y2e90IAEJPAcgdznU9+engMaeJ7Azh5Y1U67gAho4DqBqmB1buAf0MB1AlVBek83ZPkmJMGc1wAR+AAqod/B97TRpQAAAABJRU5ErkJggg==);
			}

	.reveal > .overlay .viewport {
		position: absolute;
		display: flex;
		top: $overlayHeaderHeight + $overlayHeaderPadding*2;
		right: 0;
		bottom: 0;
		left: 0;
	}

	.reveal > .overlay.overlay-preview .viewport iframe {
		width: 100%;
		height: 100%;
		max-width: 100%;
		max-height: 100%;
		border: 0;

		opacity: 0;
		visibility: hidden;
		transition: all 0.3s ease;
	}

	.reveal > .overlay.overlay-preview.loaded .viewport iframe {
		opacity: 1;
		visibility: visible;
	}

	.reveal > .overlay.overlay-preview.loaded .viewport-inner  {
		position: absolute;
		z-index: -1;
		left: 0;
		top: 45%;
		width: 100%;
		text-align: center;
		letter-spacing: normal;
	}
	.reveal > .overlay.overlay-preview .x-frame-error  {
		opacity: 0;
		transition: opacity 0.3s ease 0.3s;
	}
	.reveal > .overlay.overlay-preview.loaded .x-frame-error  {
		opacity: 1;
	}

	.reveal > .overlay.overlay-preview.loaded .spinner {
		opacity: 0;
		visibility: hidden;
		transform: scale(0.2);
	}

	.reveal > .overlay.overlay-help .viewport {
		overflow: auto;
		color: #fff;
	}

	.reveal > .overlay.overlay-help .viewport .viewport-inner {
		width: 600px;
		margin: auto;
		padding: 20px 20px 80px 20px;
		text-align: center;
		letter-spacing: normal;
	}

	.reveal > .overlay.overlay-help .viewport .viewport-inner .title {
		font-size: 20px;
	}

	.reveal > .overlay.overlay-help .viewport .viewport-inner table {
		border: 1px solid #fff;
		border-collapse: collapse;
		font-size: 16px;
	}

	.reveal > .overlay.overlay-help .viewport .viewport-inner table th,
	.reveal > .overlay.overlay-help .viewport .viewport-inner table td {
		width: 200px;
		padding: 14px;
		border: 1px solid #fff;
		vertical-align: middle;
	}

	.reveal > .overlay.overlay-help .viewport .viewport-inner table th {
		padding-top: 20px;
		padding-bottom: 20px;
	}


/*********************************************
 * PLAYBACK COMPONENT
 *********************************************/

.reveal .playback {
	position: absolute;
	left: 15px;
	bottom: 20px;
	z-index: 30;
	cursor: pointer;
	transition: all 400ms ease;
	-webkit-tap-highlight-color: rgba( 0, 0, 0, 0 );
}

.reveal.overview .playback {
	opacity: 0;
	visibility: hidden;
}


/*********************************************
 * CODE HIGHLGIHTING
 *********************************************/

.reveal .hljs {
	min-height: 100%;
}

.reveal .hljs table {
	margin: initial;
}

.reveal .hljs-ln-code,
.reveal .hljs-ln-numbers {
	padding: 0;
	border: 0;
}

.reveal .hljs-ln-numbers {
	opacity: 0.6;
	padding-right: 0.75em;
	text-align: right;
	vertical-align: top;
}

.reveal .hljs.has-highlights tr:not(.highlight-line) {
	opacity: 0.4;
}

.reveal .hljs:not(:first-child).fragment {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	box-sizing: border-box;
}

.reveal pre[data-auto-animate-target] {
	overflow: hidden;
}
.reveal pre[data-auto-animate-target] code {
	height: 100%;
}


/*********************************************
 * ROLLING LINKS
 *********************************************/

.reveal .roll {
	display: inline-block;
	line-height: 1.2;
	overflow: hidden;

	vertical-align: top;
	perspective: 400px;
	perspective-origin: 50% 50%;
}
	.reveal .roll:hover {
		background: none;
		text-shadow: none;
	}
.reveal .roll span {
	display: block;
	position: relative;
	padding: 0 2px;

	pointer-events: none;
	transition: all 400ms ease;
	transform-origin: 50% 0%;
	transform-style: preserve-3d;
	backface-visibility: hidden;
}
	.reveal .roll:hover span {
	    background: rgba(0,0,0,0.5);
	    transform: translate3d( 0px, 0px, -45px ) rotateX( 90deg );
	}
.reveal .roll span:after {
	content: attr(data-title);

	display: block;
	position: absolute;
	left: 0;
	top: 0;
	padding: 0 2px;
	backface-visibility: hidden;
	transform-origin: 50% 0%;
	transform: translate3d( 0px, 110%, 0px ) rotateX( -90deg );
}


/*********************************************
 * SPEAKER NOTES
 *********************************************/

$notesWidthPercent: 25%;

// Hide on-page notes
.reveal aside.notes {
	display: none;
}

// An interface element that can optionally be used to show the
// speaker notes to all viewers, on top of the presentation
.reveal .speaker-notes {
	display: none;
	position: absolute;
	width: math.div($notesWidthPercent, (1 - math.div($notesWidthPercent,100))) * 1%;
	height: 100%;
	top: 0;
	left: 100%;
	padding: 14px 18px 14px 18px;
	z-index: 1;
	font-size: 18px;
	line-height: 1.4;
	border: 1px solid rgba( 0, 0, 0, 0.05 );
	color: #222;
	background-color: #f5f5f5;
	overflow: auto;
	box-sizing: border-box;
	text-align: left;
	font-family: Helvetica, sans-serif;
	-webkit-overflow-scrolling: touch;

	.notes-placeholder {
		color: #ccc;
		font-style: italic;
	}

	&:focus {
		outline: none;
	}

	&:before {
		content: 'Speaker notes';
		display: block;
		margin-bottom: 10px;
		opacity: 0.5;
	}
}


.reveal.show-notes {
	max-width: 100% - $notesWidthPercent;
	overflow: visible;
}

.reveal.show-notes .speaker-notes {
	display: block;
}

@media screen and (min-width: 1600px) {
	.reveal .speaker-notes {
		font-size: 20px;
	}
}

@media screen and (max-width: 1024px) {
	.reveal.show-notes {
		border-left: 0;
		max-width: none;
		max-height: 70%;
		max-height: 70vh;
		overflow: visible;
	}

	.reveal.show-notes .speaker-notes {
		top: 100%;
		left: 0;
		width: 100%;
		height: 30vh;
		border: 0;
	}
}

@media screen and (max-width: 600px) {
	.reveal.show-notes {
		max-height: 60%;
		max-height: 60vh;
	}

	.reveal.show-notes .speaker-notes {
		top: 100%;
		height: 40vh;
	}

	.reveal .speaker-notes {
		font-size: 14px;
	}
}


/*********************************************
 * ZOOM PLUGIN
 *********************************************/

.zoomed .reveal *,
.zoomed .reveal *:before,
.zoomed .reveal *:after {
	backface-visibility: visible !important;
}

.zoomed .reveal .progress,
.zoomed .reveal .controls {
	opacity: 0;
}

.zoomed .reveal .roll span {
	background: none;
}

.zoomed .reveal .roll span:after {
	visibility: hidden;
}


/*********************************************
 * PRINT STYLES
 *********************************************/

@import 'print/pdf.scss';
@import 'print/paper.scss';