reveal.scss

/*!
 * reveal.js
 * http://lab.hakim.se/reveal-js
 * MIT licensed
 *
 * Copyright (C) 2017 Hakim El Hattab, http://hakim.se
 */


/*********************************************
 * RESET STYLES
 *********************************************/

html, body, .reveal div, .reveal span, .reveal applet, .reveal object, .reveal iframe,
.reveal h1, .reveal h2, .reveal h3, .reveal h4, .reveal h5, .reveal h6, .reveal p, .reveal blockquote, .reveal pre,
.reveal a, .reveal abbr, .reveal acronym, .reveal address, .reveal big, .reveal cite, .reveal code,
.reveal del, .reveal dfn, .reveal em, .reveal img, .reveal ins, .reveal kbd, .reveal q, .reveal s, .reveal samp,
.reveal small, .reveal strike, .reveal strong, .reveal sub, .reveal sup, .reveal tt, .reveal var,
.reveal b, .reveal u, .reveal center,
.reveal dl, .reveal dt, .reveal dd, .reveal ol, .reveal ul, .reveal li,
.reveal fieldset, .reveal form, .reveal label, .reveal legend,
.reveal table, .reveal caption, .reveal tbody, .reveal tfoot, .reveal thead, .reveal tr, .reveal th, .reveal td,
.reveal article, .reveal aside, .reveal canvas, .reveal details, .reveal embed,
.reveal figure, .reveal figcaption, .reveal footer, .reveal header, .reveal hgroup,
.reveal menu, .reveal nav, .reveal output, .reveal ruby, .reveal section, .reveal summary,
.reveal time, .reveal mark, .reveal audio, .reveal video {
	margin: 0;
	padding: 0;
	border: 0;
	font-size: 100%;
	font: inherit;
	vertical-align: baseline;
}

.reveal article, .reveal aside, .reveal details, .reveal figcaption, .reveal figure,
.reveal footer, .reveal header, .reveal hgroup, .reveal menu, .reveal nav, .reveal section {
	display: block;
}


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

html,
body {
	width: 100%;
	height: 100%;
	overflow: hidden;
}

body {
	position: relative;
	line-height: 1;

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


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

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

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

.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, 20%);

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

.reveal .slides section .fragment.fade-down {
	transform: translate(0, -20%);

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

.reveal .slides section .fragment.fade-right {
	transform: translate(-20%, 0);

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

.reveal .slides section .fragment.fade-left {
	transform: translate(20%, 0);

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

.reveal .slides section .fragment.current-visible {
	opacity: 0;
	visibility: hidden;

	&.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;
}

.reveal .stretch {
	max-width: none;
	max-height: none;
}

.reveal pre.stretch code {
	height: 100%;
	max-height: 100%;
	box-sizing: border-box;
}


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

.reveal .controls {
	$size: 50px;
	$length: floor($size * 0.6);
	$spacing: 18px;
	$thickness: 5px;
	$angle: 44deg;
	$angleHover: 40deg;
	$angleActive: 36deg;

	@mixin arrowTransform( $angle ) {
		&:before {
			transform: translateX(($size - $length)/2) translateY(($size - $thickness)/2) rotate( $angle );
		}

		&:after {
			transform: translateX(($size - $length)/2) translateY(($size - $thickness)/2) rotate( -$angle );
		}
	}

	display: none;
	position: absolute;
	top: 0;
	right: 0;
	bottom: 0;
	left: 0;
	z-index: 1;

	button {
		position: absolute;
		padding: 0;
		width: $size;
		height: $size;
		background-color: transparent;
		border: 0;
		outline: 0;
		cursor: pointer;
		transform: scale(.9999);
		transition: all 0.2s ease;
		z-index: 2; // above slides

		visibility: hidden;
		opacity: 0;

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

	button:before,
	button:after {
		content: '';
		position: absolute;
		top: 0;
		left: 0;
		width: $length;
		height: $thickness;
		border-radius: $thickness/2;
		background-color: #fff;

		transition: all 0.15s ease, background-color 0.8s ease;
		transform-origin: $thickness/2 50%;
	}

	button {
		@include arrowTransform( $angle );

		&:hover {
			@include arrowTransform( $angleHover );
		}

		&:active {
			@include arrowTransform( $angleActive );
		}
	}

	.navigate-left {
		top: 50%;
		left: $spacing;
		transform: translateY(-50%);
	}

	.navigate-right {
		top: 50%;
		right: $spacing;
		transform: translateY(-50%) rotate( 180deg );
	}

	.navigate-up {
		top: $spacing;
		left: 50%;
		transform: translateX(-50%) rotate( 90deg );
	}

	.navigate-down {
		bottom: $spacing;
		left: 50%;
		transform: translateX(-50%) rotate( -90deg );
	}

	// The deemphasize back arrows option strongly deemphasizes
	// backwards navigation in favor of drawing attention to
	// forwards navigation
	&.deemphasize-back-arrows .navigate-left.enabled,
	&.deemphasize-back-arrows .navigate-up.enabled {
		opacity: 0.3;

		&:hover {
			opacity: 1;
		}
	}

	// Any control button that can be clicked is "enabled"
	.enabled {
		visibility: visible;
		opacity: 0.7;
		cursor: pointer;
	}

	// Any control button that leads to showing or hiding
	// a fragment
	.enabled.fragmented {
		opacity: 0.3;
	}

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

	@mixin bottom-right-controls() {
		& {
			top: auto;
			bottom: $spacing;
			right: $spacing;
			left: auto;
			transform: scale(0.85);
			transform-origin: 100% 100%;
		}

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

		.navigate-left {
			right: $size + $spacing*2;
			bottom: $spacing;
		}
		.navigate-right {
			right: 0;
			bottom: $spacing;
		}
		.navigate-up {
			right: $spacing;
			bottom: $size + $spacing*2;
		}
		.navigate-down {
			right: $spacing;
			bottom: 0;
		}
	}

	&[data-controls-placement="bottom-right"] {
		@include bottom-right-controls()
	}

	@media screen and (max-width: 500px) {
		@include bottom-right-controls()
	}
}

.reveal.has-dark-background .controls button:after,
.reveal.has-dark-background .controls button:before {
	background-color: #fff;
}

.reveal.has-light-background .controls button:after,
.reveal.has-light-background .controls button:before {
	background-color: #000;
}


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

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

	background-color: rgba( 0, 0, 0, 0.2 );
}
	.reveal .progress:after {
		content: '';
		display: block;
		position: absolute;
		height: 20px;
		width: 100%;
		top: -20px;
	}
	.reveal .progress span {
		display: block;
		height: 100%;
		width: 0px;

		background-color: #000;
		transition: width 800ms cubic-bezier(0.260, 0.860, 0.440, 0.985);
	}

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

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

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

.reveal {
	position: relative;
	width: 100%;
	height: 100%;
	overflow: hidden;
	touch-action: none;
}

.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 {
	-ms-perspective: 600px;
}

.reveal .slides>section,
.reveal .slides>section>section {
	display: none;
	position: absolute;
	width: 100%;
	padding: 20px 0px;
	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;
}

.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.future,
.reveal .slides>section>section.future,
.reveal .slides>section.past,
.reveal .slides>section>section.past {
	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 $stylename in slide, linear {
	.reveal.#{$stylename} section {
		backface-visibility: hidden;
	}
	@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: translate(0, -150%);
}
@include transition-vertical-future(zoom) {
	transform: translate(0, 150%);
}


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


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

.no-transforms {
	overflow-y: auto;
}

.no-transforms .reveal .slides {
	position: relative;
	width: 80%;
	height: auto !important;
	top: 0;
	left: 50%;
	margin: 0;
	text-align: center;
}

.no-transforms .reveal .controls,
.no-transforms .reveal .progress {
	display: none !important;
}

.no-transforms .reveal .slides section {
	display: block !important;
	opacity: 1 !important;
	position: relative !important;
	height: auto;
	min-height: 0;
	top: 0;
	left: -50%;
	margin: 70px 0;
	transform: none;
}

.no-transforms .reveal .slides section section {
	left: 0;
}

.reveal .no-transition,
.reveal .no-transition * {
	transition: 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 );
		background-position: 50% 50%;
		background-repeat: no-repeat;
		background-size: cover;

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