.controls {
	width: 100%;
	max-height: 0;
	transition: 0.3s all ease-out;
	overflow: hidden;
}

.controls.is-visible {
	z-index: 10;
}

.controls.is-active {
	opacity: 1;
	max-height: 200px;
}

	.has-touch .controls.is-active {
		max-height: 300px;
	}

.controls-wrapper {
	width: 100%;
	background-color: #333;
	padding: 10px;
	color: #ccc;	
	display: flex;
	justify-content: space-between;
	align-items: flex-start;
	align-content: flex-start;
	flex-wrap: wrap;
}

.control {
	display: block;
	position: relative;
	min-width: 160px;
	margin-top: 10px;
	width: 100%;
}

.has-touch .control {
	height: 45px;
	margin-bottom: 10px;
}

.controls .button {
	line-height: 18px;
	margin-left: 10px;
}

.control-label {
	display: block;
	float: left;
	width: 100%;
	max-width: 70px;
	height: 100%;
	font-size: 11px;
	margin-right: 10px;
	text-overflow: ellipsis;
	overflow: hidden;
}

.has-touch .control-label {
	font-size: 14px;
	max-width: 80px;
	line-height: 45px;
	text-align: right;
}

.control-input {
	display: block;
	width: 100%;
	height: 100%;
	min-height: 10px;
	max-width: calc(100% - 115px);
	background-color: transparent;
	margin-top: 0;
	margin-bottom: 0;
	float: left;
}

.has-touch .control-input {
	max-width: calc(100% - 130px);
}

.control-value {
	display: block;
	float: right;
	width: 35px;
    height: 100%;
	background-color: transparent;
	border: none;
    text-align: right;
    float: left;
}

.controls .random-button {
	display: none;
	overflow: hidden;
	text-overflow: ellipsis;
	width: 100%;
	max-width: 90px;
	white-space: nowrap;
}

/*two columns*/
@media screen and (min-width: 660px) {
	html:not(.has-touch) .nav ~ .workspace .control {
		width: calc(50% - 5px);
	}

	html:not(.has-touch) .nav ~ .workspace .control {
		max-width: 320px;
	}
}

@media screen and (min-width: 800px) {
	.has-touch .nav ~ .workspace .control {
		width: calc(50% - 5px);
	}

	html:not(.has-touch) .nav ~ .workspace .control {
		max-width: 320px;
	}

	.has-touch .nav ~ .workspace .controls-wrapper {
		min-height: 164px;
	}
}

/*four columns*/
@media screen and (min-width: 721px) {
	html:not(.has-touch) .nav:not(.is-active) ~ .workspace .controls-wrapper {
		justify-content: flex-start;
	}
	
	html:not(.has-touch) .nav:not(.is-active) ~ .workspace .control {
		min-width: 160px;
		max-width: 320px;
		width: calc(25% - 15px);
	}

	html:not(.has-touch) .nav:not(.is-active) ~ .workspace .control + .control {
		margin-left: 20px;
	}
}

@media screen and (min-width: 1021px) {	
	html:not(.has-touch) .nav ~ .workspace .controls-wrapper {
		justify-content: flex-start;
	}
	
	html:not(.has-touch) .nav ~ .workspace .control {
		min-width: 160px;
		max-width: 320px;
		width: calc(25% - 15px);
	}

	html:not(.has-touch) .nav ~ .workspace .control + .control {
		margin-left: 20px;
	}
}

/*four columns*/
@media screen and (min-width: 815px) {
	html:not(.has-touch) .nav:not(.is-active) ~ .workspace .control {
		width: calc(25% - 40px);
	}

	html:not(.has-touch) .nav:not(.is-active) ~ .workspace .random-button {
		display: inline-block;
	}
}

@media screen and (min-width: 1215px) {
	html:not(.has-touch) .nav ~ .workspace .control {
		width: calc(25% - 40px);
	}

	html:not(.has-touch) .nav ~ .workspace .random-button {
		display: inline-block;
	}
}

@media screen and (min-width: 1200px) {
	.has-touch .nav:not(.is-active) ~ .workspace .control {
		width: calc(25% - 40px);
	}

	.has-touch .nav:not(.is-active) ~ .workspace .random-button {
		display: inline-block;
	}

	.has-touch .nav:not(.is-active) ~ .workspace .controls-wrapper {
		min-height: 0;
	}
}

@media screen and (min-width: 1500px) {
	.has-touch .nav ~ .workspace .control {
		width: calc(25% - 40px);
	}

	.has-touch .nav ~ .workspace .random-button {
		display: inline-block;
	}

	.has-touch .nav ~ .workspace .controls-wrapper {
		min-height: 0;
	}
}

input[type=range] {
	-webkit-appearance: none;
	width: 100%;
}

input[type=range]:focus {
	outline: none;
}

/*input[type=range]::-webkit-slider-runnable-track {
	width: 100%;
	height: 4px;
	cursor: pointer;
	background: rgba(0, 0, 0, 0.95);
	border-radius: 3px;
	border: 1px solid #333333;
}

input[type=range]::-webkit-slider-thumb {
	border: 0.1px solid rgba(102, 102, 102, 0.5);
	height: 10px;
	width: 10px;
	border-radius: 10px;
	margin-top: -4px;
	background: #999999;
	cursor: pointer;
	-webkit-appearance: none;
}*/

input[type='range']:not(*:root) {
	overflow: hidden;
	background-color: transparent;
}

input[type=range]::-webkit-slider-runnable-track {
	height: 100%;
	border: none;
	background-color: transparent;
	position: relative;
}

/*track background line, full width*/
input[type=range]::-webkit-slider-runnable-track::before {
	content: '';
	display: block;
	position: absolute;
	width: 100%;
	height: 4px;
	background-color: rgba(255, 255, 255, 0.2);
	left: 0;
	top: 50%;
	transform: translateY(-50%);
	transition: background-color 0.2s;
}

input[type=range]:focus::-webkit-slider-runnable-track::before,
input[type=range]:active::-webkit-slider-runnable-track::before {
	background-color: rgba(0, 0, 0, 0.5);
}

/*slider thumb clickable area*/
input[type=range]::-webkit-slider-thumb {
	height: 20px;
	width: 20px;
	border-radius: 45px;
	margin-top: 0;
	transition: background-color 0.2s;
	background-color: transparent;
	position: relative;
	cursor: pointer;
	-webkit-appearance: none;
}

input[type=range]:focus::-webkit-slider-thumb,
input[type=range]:active::-webkit-slider-thumb,
.has-touch input[type=range]:focus::-webkit-slider-thumb,
.has-touch input[type=range]:active::-webkit-slider-thumb {
	background-color: rgba(255, 255, 255, 0.5);
}

.has-touch input[type=range]::-webkit-slider-thumb {
	height: 38px;
	width: 38px;
	background-color: rgba(255, 255, 255, 0.2);
}

/*slider thumb point*/
input[type=range]::-webkit-slider-thumb::before {
	content: '';
	display: block;
	position: absolute;
	background-color: #fff;
	width: 10px;
	height: 10px;
	border-radius: 14px;
	z-index: 2;
	top: 50%;
	left: 50%;
	transform: translateX(-50%) translateY(-50%);
	transition: background-color 0.2s;
}

.has-touch input[type=range]::-webkit-slider-thumb::before {
	width: 14px;
	height: 14px;
}

/*slider current value track*/
input[type=range]::-webkit-slider-thumb::after {
	content: '';
	display: block;
	position: absolute;
	width: 100vw;
	height: 3px;
	top: 50%;
	right: 50%;
	transform: translateY(-50%);
	background-color: #fff;
}

input[type=range]::-moz-range-track {
	height: 100%;
	border: none;
	background-color: transparent;
	position: relative;
	background: linear-gradient(
		to bottom,
		rgba(255,255,255,0) 0%,
		rgba(255,255,255,0) 41.9%,
		rgba(255,255,255,0.2) 42%,
		rgba(255,255,255,0.2) 58%,
		rgba(255,255,255,0) 58.1%,
		rgba(255,255,255,0) 100%
	);
}

.has-touch input[type=range]::-moz-range-track {
	background: linear-gradient(
		to bottom,
		rgba(255,255,255,0) 0%,
		rgba(255,255,255,0) 49.9%,
		rgba(255,255,255,0.2) 50%,
		rgba(255,255,255,0.2) 55%,
		rgba(255,255,255,0) 55.1%,
		rgba(255,255,255,0) 100%
	);
}

input[type=range]::-moz-range-thumb {
	height: 20px;
	width: 20px;
	border-radius: 45px;
	margin-top: 3px;
	transition: background-color 0.2s;
	position: relative;
	cursor: pointer;
	appearance: none;
	border: none;
	background: radial-gradient(
		ellipse at center,
		rgba(255,255,255,1) 0%,
		rgba(255,255,255,1) 30%,
		rgba(255,255,255,0) 30.1%,
		rgba(255,255,255,0) 100%
	);
}

input[type=range]::-moz-range-thumb:hover,
.has-touch input[type=range]::-moz-range-thumb {
	background: radial-gradient(
		ellipse at center,
		rgba(255,255,255,1) 0%,
		rgba(255,255,255,1) 30%,
		rgba(255,255,255,0.2) 30.1%,
		rgba(255,255,255,0.2) 100%
	);
}

input[type=range]:focus::-moz-range-thumb,
input[type=range]:active::-moz-range-thumb,
.has-touch input[type=range]:focus::-moz-range-thumb,
.has-touch input[type=range]:active::-moz-range-thumb {
	background: radial-gradient(
		ellipse at center,
		rgba(255,255,255,1) 0%,
		rgba(255,255,255,1) 30%,
		rgba(255,255,255,0.5) 30.1%,
		rgba(255,255,255,0.5) 100%
	);
}

.has-touch input[type=range]::-moz-range-thumb {
	height: 38px;
	width: 38px;
}

input[type=range]::-ms-track {
	width: 100%;
	height: 3px;
	cursor: pointer;
	background: transparent;
	border: none;
	color: transparent;
	overflow: visible;
	background-color: rgba(255, 255, 255, 0.2);
}

input[type=range]::-ms-fill-lower {
	background: #fff;
	border: none;
	box-shadow: none;
}

input[type=range]::-ms-thumb {
	box-shadow: none;
	border: none;
	height: 10px;
	width: 10px;
	border-radius: 14px;
	border: none;
	background: #fff;
	cursor: pointer;
}

.has-touch input[type=range]::-ms-thumb {
	width: 15px;
	height: 15px;
	border-radius: 45px;
	border: 10px rgba(255, 255, 255, 0.5) solid;
}

.has-touch input[type=range]:focus::-ms-thumb,
.has-touch input[type=range]:active::-ms-thumb {
	border-color: rgba(255, 255, 255, 1);
}