/*
 * Hover.css (http://ianlunn.co.uk/)
 * Version: 1.0
 * Author: Ian Lunn @IanLunn
 * Author URL: http://ianlunn.co.uk/
 * Github: https://github.com/IanLunn/Hover

 * Made available under a MIT License:
 * http://www.opensource.org/licenses/mit-license.php

 * Hover.css Copyright Ian Lunn 2014.
 */


// Default options
$defaultDuration: .3s;
$primaryColour: #ececec;
$secondaryColour: #666;
$shadowColour: rgba(0, 0, 0, .6);



// As is often the case, some devices/browsers need additional code to get CSS to work
// in the most desired way. These mixins are used to quickly drop in hacks for each element
@mixin hideTapHighlightColor() {
	//Prevent highlight colour when element is tapped
	-webkit-tap-highlight-color: rgba(0,0,0,0);
}

@mixin hardwareAccel() {
	//Improve performance on mobile/tablet devices
	transform: translateZ(0);
}

@mixin improveAntiAlias() {
	//Improve aliasing on mobile/tablet devices
  box-shadow: 0 0 1px rgba(0, 0, 0, 0);
}



/* Default styles for the demo buttons */
.button {
  margin: .4em;
  padding: 1em;
  cursor: pointer;
  background: $primaryColour;
  text-decoration: none;
  color: $secondaryColour;
}


/* 2D TRANSITIONS */

/* Grow */
.grow {
	display: inline-block;
	transition-duration: $defaultDuration;
	transition-property: transform;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:hover {
		transform: scale(1.1);
	}
}


/* Shrink */
.shrink {
	display: inline-block;
	transition-duration: $defaultDuration;
	transition-property: transform;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:hover {
		transform: scale(.9);
	}
}


/* Pulse */
@keyframes pulse {
	25% {
		transform: scale(1.1);
	}

	75% {
		transform: scale(.9);
	}
}

.pulse {
	display: inline-block;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:hover {
		animation-name: pulse;
		animation-duration: 1s;
		animation-timing-function: linear;
		animation-iteration-count: infinite;
	}
}


/* Pulse Grow */
@keyframes pulse-grow {
	to {
		transform: scale(1.1);
	}
}

.pulse-grow {
	display: inline-block;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:hover {
		animation-name: pulse-grow;
		animation-duration: $defaultDuration;
		animation-timing-function: linear;
		animation-iteration-count: infinite;
		animation-direction: alternate;
	}
}


/* Pulse Shrink */
@keyframes pulse-shrink {
	to {
		transform: scale(.9);
	}
}

.pulse-shrink {
	display: inline-block;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:hover {
		animation-name: pulse-shrink;
		animation-duration: $defaultDuration;
		animation-timing-function: linear;
		animation-iteration-count: infinite;
		animation-direction: alternate;
	}
}


/* Push */
@keyframes push {
	50% {
		transform: scale(.8);
	}

	100% {
		transform: scale(1);
	}
}

.push {
	display: inline-block;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:hover {
		animation-name: push;
		animation-duration: $defaultDuration;
		animation-timing-function: linear;
		animation-iteration-count: 1;
	}
}


/* Pop */
@keyframes pop {
	50% {
		transform: scale(1.2);
	}

	100% {
		transform: scale(1);
	}
}

.pop {
	display: inline-block;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:hover {
		animation-name: pop;
		animation-duration: $defaultDuration;
		animation-timing-function: linear;
		animation-iteration-count: 1;
	}
}


/* Rotate */
.rotate {
	display: inline-block;
	transition-duration: $defaultDuration;
	transition-property: transform;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();
	
	&:hover {	
		transform: rotate(4deg);
	}
}


/* Grow Rotate */
.grow-rotate {
	display: inline-block;
	transition-duration: $defaultDuration;
	transition-property: transform;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();
	
	&:hover {	
		transform: scale(1.1) rotate(4deg);
	}
}


/* Float */
.float {
	display: inline-block;
	transition-duration: $defaultDuration;
	transition-property: transform;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:hover {
		transform: translateY(-5px);
	}
}


/* Sink */
.sink {
	display: inline-block;
	transition-duration: $defaultDuration;
	transition-property: transform;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:hover {
		transform: translateY(5px);
	}
}


/* Hover */
@keyframes hover {
	50% {
		transform: translateY(-3px);
	}

	100% {
		transform: translateY(-6px);
	}
}

.hover {
	display: inline-block;
	transition-duration: .5s;
	transition-property: transform;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:hover {
		transform: translateY(-6px);
		animation-name: hover;
		animation-duration: 1.5s;
		animation-delay: $defaultDuration;
		animation-timing-function: linear;
		animation-iteration-count: infinite;
		animation-direction: alternate;
	}
}


/* Hang */
@keyframes hang {
	50% {
		transform: translateY(3px);
	}

	100% {
		transform: translateY(6px);
	}
}

.hang {
	display: inline-block;
	transition-duration: .5s;
	transition-property: transform;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:hover {
		transform: translateY(6px);
		animation-name: hang;
		animation-duration: 1.5s;
		animation-delay: $defaultDuration;
		animation-timing-function: linear;
		animation-iteration-count: infinite;
		animation-direction: alternate;
	}
}


/* Skew */
.skew {
	display: inline-block;
	transition-duration: $defaultDuration;
	transition-property: transform;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:hover {
		transform: skew(-10deg);
	}
}


/* Skew Forward */
.skew-forward {
	display: inline-block;
	transition-duration: $defaultDuration;
	transition-property: transform;
	transform-origin: 0 100%;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:hover {
		transform: skew(-10deg);
	}
}


/* Wobble Vertical */
@keyframes wobble-vertical {
	16.65% {
		transform: translateY(8px);
	}

	33.3% {
		transform: translateY(-6px);
	}

	49.95% {
		transform: translateY(4px);
	}

	66.6% {
		transform: translateY(-2px);
	}

	83.25% {
		transform: translateY(1px);
	}

	100% {
		transform: translateY(0);
	}
}

.wobble-vertical {
	display: inline-block;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:hover {
		animation-name: wobble-vertical;
		animation-duration: 1s;
		animation-timing-function: ease-in-out;
		animation-iteration-count: 1;
	}
}


/* Wobble Horizontal */
@keyframes wobble-horizontal {
	16.65% {
		transform: translateX(8px);
	}

	33.3% {
		transform: translateX(-6px);
	}

	49.95% {
		transform: translateX(4px);
	}

	66.6% {
		transform: translateX(-2px);
	}

	83.25% {
		transform: translateX(1px);
	}

	100% {
		transform: translateX(0);
	}
}

.wobble-horizontal {
	display: inline-block;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:hover {
		animation-name: wobble-horizontal;
		animation-duration: 1s;
		animation-timing-function: ease-in-out;
		animation-iteration-count: 1;
	}
}


/* Wobble Top */
@keyframes wobble-top {
	16.65% {
		transform: skew(-12deg);
	}

	33.3% {
		transform: skew(10deg);
	}

	49.95% {
		transform: skew(-6deg);
	}

	66.6% {
		transform: skew(4deg);
	}

	83.25% {
		transform: skew(-2deg);
	}

	100% {
		transform: skew(0);
	}
}

.wobble-top {
	display: inline-block;
	transform-origin: 0 100%;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:hover {
		animation-name: wobble-top;
		animation-duration: 1s;
		animation-timing-function: ease-in-out;
		animation-iteration-count: 1;
	}
}


/* Wobble Bottom */
@keyframes wobble-bottom {
	16.65% {
		transform: skew(-12deg);
	}

	33.3% {
		transform: skew(10deg);
	}

	49.95% {
		transform: skew(-6deg);
	}

	66.6% {
		transform: skew(4deg);
	}

	83.25% {
		transform: skew(-2deg);
	}

	100% {
		transform: skew(0);
	}
}

.wobble-bottom {
	display: inline-block;
	transform-origin: 100% 0;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:hover {
		animation-name: wobble-bottom;
		animation-duration: 1s;
		animation-timing-function: ease-in-out;
		animation-iteration-count: 1;
	}
}




/* BORDER TRANSITIONS */

/* Border Fade */
.border-fade {
	display: inline-block;
	$borderWidth: 4px;

	transition-duration: $defaultDuration;
	transition-property: box-shadow;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	box-shadow: 
			inset 0 0 0 $borderWidth $primaryColour,
			0 0 1px rgba(0, 0, 0, 0); /* Hack to improve aliasing on mobile/tablet devices */ 
	
	&:hover {
		box-shadow: 
			inset 0 0 0 $borderWidth $secondaryColour,
			0 0 1px rgba(0, 0, 0, 0); /* Hack to improve aliasing on mobile/tablet devices */
	}
}


/* Hollow */
.hollow {
	display: inline-block;
	$borderWidth: 4px;

	transition-duration: $defaultDuration;
	transition-property: background;

	transform: translateZ(0); /* Hack to improve performance on mobile/tablet devices */
	box-shadow: 
		inset 0 0 0 $borderWidth $primaryColour,
		0 0 1px rgba(0, 0, 0, 0); /* Hack to improve aliasing on mobile/tablet devices */

	&:hover {
		background: none;
	}
}


/* Trim */
.trim {
	display: inline-block;
	$outerBorderWidth: 4px;
	$innerBorderWidth: 4px;

	position: relative;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:before {
		content: '';
		position: absolute;
		border: white solid $innerBorderWidth;
		top: $outerBorderWidth;
		left: $outerBorderWidth;
		right: $outerBorderWidth;
		bottom: $outerBorderWidth;
		opacity: 0;
		transition-duration: $defaultDuration;
		transition-property: opacity;
	}

	&:hover:before {
		opacity: 1;
	}
}


/* Outline Outward */
.outline-outward {
	display: inline-block;
	$outerBorderWidth: 4px;
	$innerBorderWidth: 4px;

	position: relative;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:before {
		content: '';
		position: absolute;
		border: $primaryColour solid $outerBorderWidth;
		top: 0;
		right: 0;
		bottom: 0;
		left: 0;
		transition-duration: .3s;
		transition-property: top right bottom left;
	}

	&:hover:before {
		top: -($outerBorderWidth + $innerBorderWidth);
		right: -($outerBorderWidth + $innerBorderWidth);
		bottom: -($outerBorderWidth + $innerBorderWidth);
		left: -($outerBorderWidth + $innerBorderWidth);
	}
}


/* Outline Inward */
.outline-inward {
	display: inline-block;
	$outerBorderWidth: 4px;
	$innerBorderWidth: 4px;

	position: relative;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:before {
		content: '';
		position: absolute;
		border: $primaryColour solid $outerBorderWidth;
		top: -($outerBorderWidth + $innerBorderWidth) * 2;
		right: -($outerBorderWidth + $innerBorderWidth) * 2;
		bottom: -($outerBorderWidth + $innerBorderWidth) * 2;
		left: -($outerBorderWidth + $innerBorderWidth) * 2;
		opacity: 0;
		transition-duration: .3s;
		transition-property: top right bottom left;
	}

	&:hover:before {
		top: -($outerBorderWidth + $innerBorderWidth);
		right: -($outerBorderWidth + $innerBorderWidth);
		bottom: -($outerBorderWidth + $innerBorderWidth);
		left: -($outerBorderWidth + $innerBorderWidth);
		opacity: 1;
	}
}


/* Round Corners */
.round-corners {
	display: inline-block;
	transition-duration: $defaultDuration;
	transition-property: border-radius;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:hover {
		border-radius: 1em;
	}
}




/* SHADOW/GLOW TRANSITIONS */

/* Glow */
.glow {
	display: inline-block;
	transition-duration: $defaultDuration;
	transition-property: box-shadow;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:hover {
		box-shadow: 0 0 8px $shadowColour;
	}
}


/* Box Shadow Outset */
.box-shadow-outset {
	display: inline-block;
	transition-duration: $defaultDuration;
	transition-property: box-shadow;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:hover {
		box-shadow: 2px 2px 2px $shadowColour;
	}
}


/* Box Shadow Inset */
.box-shadow-inset {
	display: inline-block;
	transition-duration: $defaultDuration;
	transition-property: box-shadow;

	box-shadow: inset 0 0 0 $shadowColour,
		0 0 1px rgba(0, 0, 0, 0); /* Hack to improve aliasing on mobile/tablet devices */

	@include hideTapHighlightColor();
	@include hardwareAccel();

	&:hover {
		box-shadow: inset 2px 2px 2px $shadowColour,
		0 0 1px rgba(0, 0, 0, 0); /* Hack to improve aliasing on mobile/tablet devices */
	}
}


/* Float Shadow */
.float-shadow {
	display: inline-block;
	position: relative;
	transition-duration: $defaultDuration;
	transition-property: transform;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:before {
		pointer-events: none;
	  position: absolute;
	  z-index: -1;
	  content: '';
	  top: 100%;
	  left: 5%;
	  height: 10px;
	  width: 90%;
	  opacity: 0;
	  background: radial-gradient(ellipse at center, rgba(0,0,0,.35) 0%,rgba(0,0,0,0) 80%); /* W3C */
		transition-duration: $defaultDuration;
		transition-property: transform opacity;
	}

	&:hover {
		transform: translateY(-5px); /* move the element up by 5px */

		&:before {
			opacity: 1;
			transform: translateY(5px); /* move the element down by 5px (it will stay in place because it's attached to the element that also moves up 5px) */
		}
	}
}


/* Hover Shadow */
@keyframes hover {
	50% {
		transform: translateY(-3px);
	}

	100% {
		transform: translateY(-6px);
	}
}

@keyframes hover-shadow {
	0% {
		transform: translateY(6px);
		opacity: .4;
	}

	50% {
		transform: translateY(3px);
		opacity: 1;
	}


	100% {
		transform: translateY(6px);
		opacity: .4;
	}
}

.hover-shadow {
	display: inline-block;
	position: relative;
	transition-duration: $defaultDuration;
	transition-property: transform;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:before {
		pointer-events: none;
	  position: absolute;
	  z-index: -1;
	  content: '';
	  top: 100%;
	  left: 5%;
	  height: 10px;
	  width: 90%;
	  opacity: 0;
	  background: radial-gradient(ellipse at center, rgba(0,0,0,.35) 0%,rgba(0,0,0,0) 80%); /* W3C */
		transition-duration: $defaultDuration;
		transition-property: transform opacity;
	}

	&:hover {
		transform: translateY(-6px);
		animation-name: hover;
		animation-duration: 1.5s;
		animation-delay: $defaultDuration;
		animation-timing-function: linear;
		animation-iteration-count: infinite;
		animation-direction: alternate;

		&:before {
			opacity: .4;
			transform: translateY(6px);
			animation-name: hover-shadow;
			animation-duration: 1.5s;
			animation-delay: .3s;
			animation-timing-function: linear;
			animation-iteration-count: infinite;
			animation-direction: alternate;
		}
	}
}


/* Shadow Radial */
.shadow-radial {
	display: inline-block;
	position: relative;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:before,
	&:after {
		pointer-events: none;
		position: absolute;
		content: '';
    left: 0;
    width: 100%;
    box-sizing: border-box;
    background-repeat: no-repeat;
    height: 5px;
    opacity: 0;
    transition-duration: $defaultDuration;
    transition-property: opacity;
	}

	&:before {
		bottom: 100%;
    background: radial-gradient(ellipse at 50% 150%, $shadowColour 0%, rgba(0, 0, 0, 0) 80%);
	}

	&:after {
		top: 100%;
		background: radial-gradient(ellipse at 50% -50%, $shadowColour 0%, rgba(0, 0, 0, 0) 80%);
	}

	&:hover:before,
	&:hover:after {
		opacity: 1;
	}
}



/* SPEECH BUBBLES */

$tipWidth: 10px;  //the width of the speech bubble tip
$tipHeight: 10px; //the height of the speech bubble tip
$tipColour: $primaryColour;

/* Bubble Top */
.bubble-top {
	display: inline-block;
	position: relative;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:before {
		pointer-events: none;
		position: absolute;
		z-index: -1;
		content: '';
		border-style: solid;
		transition-duration: $defaultDuration;
		left: calc(50% - #{$tipWidth});
		border-width: 0 $tipWidth $tipHeight $tipWidth;
		border-color: transparent transparent $tipColour transparent;
		transition-property: top;
	}

	&:hover:before {
		top: -($tipHeight);
	}
}


/* Bubble Right */
.bubble-right {
	display: inline-block;
	position: relative;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:before {
		pointer-events: none;
		position: absolute;
		z-index: -1;
		content: '';
		border-style: solid;
		transition-duration: $defaultDuration;
		transition-property: right;
		top: calc(50% - #{$tipHeight});
		right: 0;
		border-width: $tipHeight 0 $tipHeight $tipWidth;
		border-color: transparent transparent transparent $tipColour ;
	}

	&:hover:before {
		right: -($tipWidth);
	}
}


/* Bubble Bottom */
.bubble-bottom {
	display: inline-block;
	position: relative;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:before {
		pointer-events: none;
		position: absolute;
		z-index: -1;
		content: '';
		border-style: solid;
		transition-duration: $defaultDuration;
		transition-property: bottom;
		left: calc(50% - #{$tipWidth});
		bottom: 0;
		border-width: $tipHeight $tipWidth 0 $tipWidth;
		border-color: $tipColour transparent transparent transparent;
	}

	&:hover:before {
		bottom: -($tipHeight);
	}	
}


/* Bubble Left */
.bubble-left {
	display: inline-block;
	position: relative;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:before {
		pointer-events: none;
		position: absolute;
		z-index: -1;
		content: '';
		border-style: solid;
		transition-duration: $defaultDuration;
		transition-property: left;
		top: calc(50% - #{$tipHeight});
		left: 0;
		border-width: $tipHeight $tipWidth $tipHeight 0;
		border-color: transparent $tipColour transparent transparent;
	}

	&:hover:before {
		left: -($tipWidth);
	}
}


/* Bubble Float Top */
.bubble-float-top {
	display: inline-block;
	position: relative;
	transition-duration: $defaultDuration;
	transition-property: transform;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:before {
		pointer-events: none;
		position: absolute;
		z-index: -1;
		content: '';
		left: calc(50% - #{$tipWidth});
		top: 0;
		border-style: solid;
		border-width: 0 $tipWidth $tipHeight $tipWidth;
		border-color: transparent transparent $tipColour transparent;
		transition-duration: $defaultDuration;
		transition-property: top;
	}


	&:hover {
		transform: translateY(5px) translateZ(0);
	}

	&:hover:before {
		top: -($tipHeight);
	}
}

/* Bubble Float Right */
.bubble-float-right {
	display: inline-block;
	position: relative;
	transition-duration: $defaultDuration;
	transition-property: transform;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:before {
		pointer-events: none;
		position: absolute;
		z-index: -1;
		top: calc(50% - #{$tipHeight});
		right: 0;
		content: '';
		border-style: solid;
		border-width: $tipHeight 0 $tipHeight $tipWidth;
		border-color: transparent transparent transparent $tipColour;
		transition-duration: $defaultDuration;
		transition-property: right;
	}

	&:hover {
		transform: translateX(-5px);
	}

	&:hover:before {
		right: -($tipWidth);
	}
}


/* Bubble Float Bottom */
.bubble-float-bottom {
	display: inline-block;
	position: relative;
	transition-duration: $defaultDuration;
	transition-property: transform;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:before {
		pointer-events: none;
		position: absolute;
		z-index: -1;
		content: '';
		left: calc(50% - #{$tipWidth});
		bottom: 0;
		border-style: solid;
		border-width: $tipHeight $tipWidth 0 $tipWidth;
		border-color: $tipColour transparent transparent transparent;
		transition-duration: $defaultDuration;
		transition-property: bottom;
	}

	&:hover {
		transform: translateY(-5px) translateZ(0);
	}

	&:hover:before {
		bottom: -($tipHeight);
	}
}


/* Bubble Float Left */
.bubble-float-left {
	display: inline-block;
	position: relative;
	transition-duration: $defaultDuration;
	transition-property: transform;

	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:before {
		pointer-events: none;
		position: absolute;
		z-index: -1;
		content: '';
		top: calc(50% - #{$tipHeight});
		left: 0;
		border-style: solid;
		border-width: $tipHeight $tipWidth $tipHeight 0;
		border-color: transparent $tipColour transparent transparent;
		transition-duration: $defaultDuration;
		transition-property: left;
	}

	&:hover {
		transform: translateX(5px);
	}

	&:hover:before {
		left: -($tipWidth);
	}
}



/* CURLS */

// Curl dimensions
$curlWidth: 25px;
$curlHeight: 25px;

// Curl colours
$revealAreaColour: white;			// reveal area behind the curl
$curlLineColour: #aaa;				// crease line
$curlTransitionColour: #ccc;	// colour transitioning from crease line to final colour
$curlLastColour: white;				// final colour of the back of the curl


/* Curl Top Left */
.curl-top-left {
	display: inline-block;
	position: relative;
	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:before {
		pointer-events: none;
		position: absolute;
		content: '';
		height: 0;
		width: 0;
		top: 0;
		left: 0;
		background: $revealAreaColour; /* IE9 */
		background: linear-gradient(
			135deg, 
			$revealAreaColour 45%,
			$curlLineColour 50%,		
			$curlTransitionColour 56%,		
			$curlLastColour 80%   
		);
		filter: progid:DXImageTransform.Microsoft.gradient(GradientType=0,startColorstr='#ffffff', endColorstr='#000000');/*For IE7-8-9*/

		z-index: 1000;
		box-shadow: 1px 1px 1px rgba(0, 0, 0, .4);
		transition-duration: $defaultDuration;
		transition-property: width height;
	}

	&:hover:before {
		width: $curlWidth;
		height: $curlHeight;
	}
}


/* Curl Top Right */
.curl-top-right {
	display: inline-block;
	position: relative;
	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:before {
		pointer-events: none;
		position: absolute;
		content: '';
		height: 0;
		width: 0;
		top: 0;
		right: 0;
		background: $revealAreaColour; /* IE9 */
		background: linear-gradient(
			225deg, 
			$revealAreaColour 45%,
			$curlLineColour 50%,		
			$curlTransitionColour 56%,		
			$curlLastColour 80%   
		);
		box-shadow: -1px 1px 1px rgba(0, 0, 0, .4);
		transition-duration: $defaultDuration;
		transition-property: width height;
	}

	&:hover:before {
		width: $curlWidth;
		height: $curlHeight;
	}
}


/* Curl Bottom Right */
.curl-bottom-right {
	display: inline-block;
	position: relative;
	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:before {
		pointer-events: none;
		position: absolute;
		content: '';
		height: 0;
		width: 0;
		bottom: 0;
		right: 0;
		background: $revealAreaColour; /* IE9 */
		background: linear-gradient(
			315deg, 
			$revealAreaColour 45%,
			$curlLineColour 50%,		
			$curlTransitionColour 56%,		
			$curlLastColour 80%   
		);
		box-shadow: -1px -1px 1px rgba(0, 0, 0, .4);
		transition-duration: $defaultDuration;
		transition-property: width height;
	}

	&:hover:before {
		width: $curlWidth;
		height: $curlHeight;
	}
}



/* Curl Bottom Left */
.curl-bottom-left {
	display: inline-block;
	position: relative;
	@include hideTapHighlightColor();
	@include hardwareAccel();
	@include improveAntiAlias();

	&:before {
		pointer-events: none;
		position: absolute;
		content: '';
		height: 0;
		width: 0;
		bottom: 0;
		left: 0;
		background: $revealAreaColour; /* IE9 */
		background: linear-gradient(
			45deg, 
			$revealAreaColour 45%,
			$curlLineColour 50%,		
			$curlTransitionColour 56%,		
			$curlLastColour 80%   
		);
		box-shadow: 1px -1px 1px rgba(0, 0, 0, .4);
		transition-duration: $defaultDuration;
		transition-property: width height;
	}

	&:hover:before {
		width: $curlWidth;
		height: $curlHeight;
	}
}