<div class="send-button">
 <span class="text">send</span>
  <span class="icon-wrapper">
  	<span class="icon-1 ion-paper-airplane"></span>
		<span class="icon-2 ion-checkmark"></span>
  </span>
</div>

// helper
html
	box-sizing: border-box
	font-size: 62.5%
	overflow: hidden

*
	padding: 0
	margin: 0
	-webkit-font-smoothing: antialiased
	-moz-osx-font-smoothing: grayscale
	box-sizing: inherit
	&::after, &::before
		box-sizing: inherit

%center
	position: absolute
	top: 50%
	left: 50%
	transform: translate(-50%, -50%)

=size($w, $h)
	width: $w
	height: $h

=font-size($sizeValue: 1.6)
	font-size: ($sizeValue * 10) + px
	font-size: $sizeValue + rem

// colors
$green: #66bb6a
$pink: #c51162 
$pink-light: #d81b60 
$pink-white: #f8bbd0

// animations
@keyframes icon-animation
	0%
		transform: rotate(0deg) scale(1)
	33%
		transform: rotate(-120deg) scale(4)
	66%
		transform: rotate(-240deg) scale(4)
	100%
		transform: rotate(-360deg) scale(1)

@keyframes input-shadow
	0%
		box-shadow: 0 3px 3px 0 rgba(0, 0, 0, 0.14), 0 1px 7px 0 rgba(0, 0, 0, 0.12), 0 3px 1px -1px rgba(0, 0, 0, 0.2)	
	40%
		box-shadow: 0 2px 2px 0 rgba(0, 0, 0, 0.14), 0 1px 5px 0 rgba(0, 0, 0, 0.12), 0 3px 1px -2px rgba(0, 0, 0, 0.2)
	50%
		box-shadow: none
	70%
		box-shadow: 0 2px 2px 0 rgba(0, 0, 0, 0.14), 0 1px 5px 0 rgba(0, 0, 0, 0.12), 0 3px 1px -2px rgba(0, 0, 0, 0.2)
	100%
		box-shadow: 0 3px 3px 0 rgba(0, 0, 0, 0.14), 0 1px 7px 0 rgba(0, 0, 0, 0.12), 0 3px 1px -1px rgba(0, 0, 0, 0.2)	

// animation related classes
.icon-wrapper-animation
	animation: icon-animation 1.5s linear
	transition: color 0.6s ease
	color: $green
		
.clicked
	transform: translate(-50%, calc(-50% + 1px)) !important
	transition: transform .15s ease
	animation: input-shadow .15s ease
	box-shadow: 0 3px 3px 0 rgba(0, 0, 0, 0.14), 0 1px 7px 0 rgba(0, 0, 0, 0.12), 0 3px 1px -1px rgba(0, 0, 0, 0.2)
	> .text
		transform: translateY(1px)
		transition: transform .15s ease-out
	
// corpus	
body
	background-color: $pink-light
	.send-button
		@extend %center
		background-color: $pink
		+size(250px, 45px)
		border-radius: 2px
		box-shadow: 0 4px 5px 0 rgba(0, 0, 0, 0.14), 0 1px 10px 0 rgba(0, 0, 0, 0.12), 0 2px 4px -1px rgba(0, 0, 0, 0.3)
		cursor: pointer
		user-select: none
		transition: transform .15s
		text-shadow: 1px 2px 1px rgba(77,	9,	36 ,0.6)
		.text
			position: absolute
			left: 10px
			+font-size(2.2)
			letter-spacing: 1px
			line-height: 45px
			font-family: "Roboto"
			font-weight: 700
			color: $pink-white
			text-transform: uppercase
		.icon-wrapper
			position: absolute
			right: -65px
			bottom: -10px
			+size(200px, 200px)	
			border-radius: 50%	
			line-height: 45px	
			color: $pink-white
			[class*="icon-"]
				position: absolute
				left: 100px
				bottom: 10px
				transition: color 0.6s ease
			.icon-1
				transform: rotate(15deg)
				+font-size(2.3)
				opacity: 1
			.icon-2
				opacity: 0
				+font-size(2.5)
				

$(() => {
	var $sendBtn = $('.send-button'),
			$iWrapper = $('.icon-wrapper'),
			$i1 = $('.icon-1'),
			$i2 = $('.icon-2');
	
	function animationEvent() {
		var t,
				el = document.createElement('fakeelement');

		var animations = {
			animation: 'animationend',
			OAnimation: 'oAnimationEnd',
			MozAnimation: 'animationend',
			WebkitAnimation: 'webkitAnimationEnd'
		};

		for (t in animations) {
			if (el.style[t] !== undefined) {
				return animations[t];
			}
		}
	}

	$sendBtn.on('click', e => {
		$iWrapper.css('color', '#66bb6a');
		$iWrapper.addClass('icon-wrapper-animation');
		$sendBtn.addClass('clicked');
		$i1.delay(900);
		$i1.fadeTo(300, 0);
		$i2.delay(900);
		$i2.fadeTo(300, 1);		
	});

	$sendBtn.on(animationEvent(), e => {
		if (e.originalEvent.animationName == 'input-shadow') {
			$sendBtn.removeClass('clicked');
		}
	});

	$iWrapper.on(animationEvent(), e => {
		if (e.originalEvent.animationName == 'icon-animation') {
			$iWrapper.removeClass('icon-wrapper-animation');
			setTimeout(reset, 1200);
		}
	});

	function reset() {
		$i1.fadeTo(250, 1);
		$i2.fadeTo(250, 0);
		$iWrapper.css('color', '#f8bbd0');
	}
}); // end of document ready