@navHeight: 60px;
@fontSize: 18px;
@lineHeight: 1.4;
@white: #FFF;
@darkGray: #333;
@gray: #CCCCCC;

.noGap(){
	font-size: 0;
	line-height: 0;
	letter-spacing: -.3em;
}
.reGap(@fz:@fontSize,@lh:@lineHeight){
	font-size: @fz;
	line-height: @lh;
	letter-spacing: normal;
}
.box-sizing(@v) {
	-moz-box-sizing: @v;
	box-sizing: @v;
}

html,
body {
	padding: 0;
	margin: 0;
}

body {
	-webkit-font-smoothing: antialiased;
	text-align: center;
	font: @fontSize / @lineHeight 'Helvetica', 'Arial', sans-serif;
	padding-top: @navHeight;
}

ul{
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	margin: 0;
	padding: 0;
	height: @navHeight;
	background: @gray;
	.noGap;
}

li{
	position: relative;
	display: inline-block;
	vertical-align: top;
	width: (100% / 4);
	text-align: center;
	.reGap(@fontSize, @navHeight);

	a {
		display: block;
		color: @white;
		text-decoration: none;
		text-transform: uppercase;
		white-space: nowrap;

		&:hover,
		&.active{
			background: @darkGray;
			color: @white;
		}

		&.active{
			&:after{
				content: '';
				position: absolute;
				top: 100%;
				left: 50%;
				margin-left: -10px;
				border: 10px solid;
				border-color: transparent;
				border-top-color: @darkGray;
			}
		}
	}
}

.chart{
	position: relative;
	display: inline-block;
	width: 110px;
	height: 110px;
	margin-top: 50px;
	margin-bottom: 50px;
	text-align: center;
	canvas {
		position: absolute;
		top: 0;
		left: 0;
	}
}

.percent{
	display: inline-block;
	line-height: 110px;
	z-index: 2;

	&:after{
		content: '%';
		margin-left: 0.1em;
		font-size: .8em;
	}
}

.angular{
	margin-top: 100px;
	.chart{
		margin-top: 0;
	}
}

input{
	display: block;
	margin: auto;
	margin-bottom: 3em;
}

.btn {
	display: block;
	width: 200px;
	margin: 0 auto;
	padding: 10px 20px;
	background: @gray;
	color: @white;
	text-transform: uppercase;
	cursor: pointer;
	font-size: 0.8em;
	.box-sizing(border-box);

	&:hover{
		background: @darkGray;
		color: @white;
	}
}

.span6 {
	float: left;
	width: 50%;
}


@media only screen and (max-width: 600px) {
	li{
		font-size: (@fontSize * .8);
	}
}

@media only screen and (max-width: 430px) {
	.span6 {
		float: none;
		width: 100%;
	}

	body{
		padding-top: 0;
	}
	ul{
		height: auto;
		position: static;
	}
	li{
		display: block;
		width: 100%;
	}
	li a{
		white-space: normal;
	}
	a.active:after{
		display: none;
	}
}