$base-width: 1.25em;
$base-width-half: $base-width / 2;

/*
 * BACKGROUND COLORS
 * For glow and masking effects
 */

$bg-default-color: #fff;
$bg-default-active-color: #f5f5f5;

$bg-danger-color: #f2dede;
$bg-danger-active-color: #ebcccc;

$bg-warning-color: #fcf8e3;
$bg-warning-active-color: #faf2cc;

$bg-success-color: #dff0d8;
$bg-success-active-color: #d0e9c6;

$bg-info-color: #d9edf7;
$bg-info-active-color: #c4e3f3;

$bg-btn-default-hover-color:  #e6e6e6;
$bg-btn-default-active-color: #d4d4d4;

$bg-btn-success-color: #5cb85c;
$bg-btn-success-hover-color: #449d44;
$bg-btn-success-active-color: #398439;

$bg-btn-warning-color: #f0ad4e;
$bg-btn-warning-hover-color: #ec971f;
$bg-btn-warning-active-color: #d58512;

$bg-nav-pills-hover-color: #eeeeee;
$bg-nav-pills-active-color: #337ab7;

/**
 * fa-layers
 * - supports up, down, left, right
 */

.fa-layers {
	position: relative;
	display: inline-block;
	width: $base-width;
	height: $base-width;
	line-height: $base-width;
	text-align: center;
	vertical-align: middle;

	&.fa-fw > * {
		width: 100%;
		height: 100%;
	}

	& > .fa,
	& > .fa-layers-text,
	& > .fab,
	& > .fad,
	& > .fal,
	& > .far,
	& > .fas {
		position: absolute;
		left: 0;
		width: 100%;
		line-height: inherit;
		text-align: center;
	}
	/*
	 * SHIFTING
	 */
	@for $i from 1 through 8 {
		& [data-fa-transform*='up-#{$i}'] {
			top: -($i / 8 * 50%);
		}
	}
	@for $i from 1 through 8 {
		& [data-fa-transform*='down-#{$i}'] {
			top: ($i / 8 * 50%);
		}
	}
	@for $i from 1 through 8 {
		& [data-fa-transform*='right-#{$i}'] {
			left: ($i / 8 * 50%);
		}
	}
	@for $i from 1 through 8 {
		& [data-fa-transform*='left-#{$i}'] {
			left: -($i / 8 * 50%);
		}
	}
}

.fa,
.fa-layers-text,
.fab,
.fad,
.fal,
.far,
.fas {
	/*
	 * ROTATE
	 */
	@for $i from 1 through 71 {
		&[data-fa-transform*='rotate-#{$i * 5}'],
		&[data-fa-transform*='rotate-#{$i * 5 - 360}'] {
			transform: rotate(5deg * $i);
		}
	}
	/*
	 * FLIP
	 */
	&[data-fa-transform*='flip-h'] {
		transform: scale(-1, 1);
	}

	&[data-fa-transform*='flip-v'] {
		transform: scale(1, -1);
	}

	&[data-fa-transform*='flip-h'][data-fa-transform*='flip-v'] {
		transform: scale(-1, -1);
	}
	/*
	 * SHRINK
	 */
	@for $i from 1 through 16 {
		&[data-fa-transform*='shrink-#{$i}'] {
			font-size: 1em - $i / 16;
		}
	}
	/*
	 * GROW
	 */
	@for $i from 1 through 16 {
		&[data-fa-transform*='grow-#{$i}'] {
			font-size: 1em + $i / 16;
		}
	}

	/*
	 * MASKING
	 */

	&[data-fa-mask] {

		color: $bg-default-color;

		a.list-group-item:hover &,
		a.list-group-item:focus &,
		button.list-group-item:hover &,
		button.list-group-item:focus & {
			color: $bg-default-active-color;
		}

		.alert-danger &,
		.bg-danger &,
		.list-group-item-danger &,
		tr.danger &,
		td.danger & {
			color: $bg-danger-color;
		}

		a.list-group-item-danger:hover &,
		a.list-group-item-danger:focus &,
		button.list-group-item-danger:hover &,
		button.list-group-item-danger:focus & {
			color: $bg-danger-active-color;
		}

		.alert-warning &,
		.bg-warning &,
		.list-group-item-warning &,
		tr.warning &,
		td.warning & {
			color: $bg-warning-color;
		}

		a.list-group-item-warning:hover &,
		a.list-group-item-warning:focus &,
		button.list-group-item-warning:hover &,
		button.list-group-item-warning:focus & {
			color: $bg-warning-active-color;
		}

		.alert-success &,
		.bg-success &,
		.list-group-item-success &,
		tr.success &,
		td.success & {
			color: $bg-success-color;
		}

		a.list-group-item-success:hover &,
		a.list-group-item-success:focus &,
		button.list-group-item-success:hover &,
		button.list-group-item-success:focus & {
			color: $bg-success-active-color;
		}

		.alert-info &,
		.bg-info &,
		.list-group-item-info &,
		tr.info &,
		td.info & {
			color: $bg-info-color;
		}

		a.list-group-item-info:hover &,
		a.list-group-item-info:focus &,
		button.list-group-item-info:hover &,
		button.list-group-item-info:focus & {
			color: $bg-info-active-color;
		}
	}

	/*
	 * GLOWING
	 */

	&[data-fa-glow] {
		text-shadow: -2px 0 0 $bg-default-color, 2px 0 $bg-default-color, 0 2px 0 $bg-default-color, 0 -2px 0 $bg-default-color, 1.5px 1.5px 0 $bg-default-color, -1.5px -1.5px 0 $bg-default-color, -1.5px 1.5px 0 $bg-default-color, 1.5px -1.5px 0 $bg-default-color;
		-webkit-text-stroke-width: 4px;
		-webkit-text-stroke-color: $bg-default-color;
		paint-order: stroke fill;

		@for $i from 1 through 9 {
			&[data-fa-glow*='#{$i}px'] {
				-webkit-text-stroke-width: #{$i}px;
			}
		}

		a.list-group-item:hover &,
		a.list-group-item:focus &,
		button.list-group-item:hover &,
		button.list-group-item:focus & {
			text-shadow: -2px 0 0 $bg-default-active-color, 2px 0 $bg-default-active-color, 0 2px 0 $bg-default-active-color, 0 -2px 0 $bg-default-active-color, 1.5px 1.5px 0 $bg-default-active-color, -1.5px -1.5px 0 $bg-default-active-color, -1.5px 1.5px 0 $bg-default-active-color, 1.5px -1.5px 0 $bg-default-active-color;
			-webkit-text-stroke-color: $bg-default-active-color;
		}

		.alert-danger &,
		.bg-danger &,
		.list-group-item-danger &,
		tr.danger &,
		td.danger &,
		&[data-fa-glow*='danger'] {
			text-shadow: -2px 0 0 $bg-danger-color, 2px 0 $bg-danger-color, 0 2px 0 $bg-danger-color, 0 -2px 0 $bg-danger-color, 1.5px 1.5px 0 $bg-danger-color, -1.5px -1.5px 0 $bg-danger-color, -1.5px 1.5px 0 $bg-danger-color, 1.5px -1.5px 0 $bg-danger-color;
			-webkit-text-stroke-color: $bg-danger-color;
		}

		a.list-group-item-danger:hover &,
		a.list-group-item-danger:focus &,
		button.list-group-item-danger:hover &,
		button.list-group-item-danger:focus & {
			text-shadow: -2px 0 0 $bg-danger-active-color, 2px 0 $bg-danger-active-color, 0 2px 0 $bg-danger-active-color, 0 -2px 0 $bg-danger-active-color, 1.5px 1.5px 0 $bg-danger-active-color, -1.5px -1.5px 0 $bg-danger-active-color, -1.5px 1.5px 0 $bg-danger-active-color, 1.5px -1.5px 0 $bg-danger-active-color;
			-webkit-text-stroke-color: $bg-danger-active-color;
		}

		.alert-warning &,
		.bg-warning &,
		.list-group-item-warning &,
		tr.warning &,
		td.warning &,
		&[data-fa-glow*='warning'] {
			text-shadow: -2px 0 0 $bg-warning-color, 2px 0 $bg-warning-color, 0 2px 0 $bg-warning-color, 0 -2px 0 $bg-warning-color, 1.5px 1.5px 0 $bg-warning-color, -1.5px -1.5px 0 $bg-warning-color, -1.5px 1.5px 0 $bg-warning-color, 1.5px -1.5px 0 $bg-warning-color;
			-webkit-text-stroke-color: $bg-warning-color;
		}

		a.list-group-item-warning:hover &,
		a.list-group-item-warning:focus &,
		button.list-group-item-warning:hover &,
		button.list-group-item-warning:focus & {
			text-shadow: -2px 0 0 $bg-warning-active-color, 2px 0 $bg-warning-active-color, 0 2px 0 $bg-warning-active-color, 0 -2px 0 $bg-warning-active-color, 1.5px 1.5px 0 $bg-warning-active-color, -1.5px -1.5px 0 $bg-warning-active-color, -1.5px 1.5px 0 $bg-warning-active-color, 1.5px -1.5px 0 $bg-warning-active-color;
			-webkit-text-stroke-color: $bg-warning-active-color;
		}

		.alert-success &,
		.bg-success &,
		.list-group-item-success &,
		tr.success &,
		td.success &,
		&[data-fa-glow*='success'] {
			text-shadow: -2px 0 0 $bg-success-color, 2px 0 $bg-success-color, 0 2px 0 $bg-success-color, 0 -2px 0 $bg-success-color, 1.5px 1.5px 0 $bg-success-color, -1.5px -1.5px 0 $bg-success-color, -1.5px 1.5px 0 $bg-success-color, 1.5px -1.5px 0 $bg-success-color;
			-webkit-text-stroke-color: $bg-success-color;
		}

		a.list-group-item-success:hover &,
		a.list-group-item-success:focus &,
		button.list-group-item-success:hover &,
		button.list-group-item-success:focus & {
			text-shadow: -2px 0 0 $bg-success-active-color, 2px 0 $bg-success-active-color, 0 2px 0 $bg-success-active-color, 0 -2px 0 $bg-success-active-color, 1.5px 1.5px 0 $bg-success-active-color, -1.5px -1.5px 0 $bg-success-active-color, -1.5px 1.5px 0 $bg-success-active-color, 1.5px -1.5px 0 $bg-success-active-color;
			-webkit-text-stroke-color: $bg-success-active-color;
		}

		.alert-info &,
		.bg-info &,
		.list-group-item-info &,
		tr.info &,
		td.info &,
		&[data-fa-glow*='info'] {
			text-shadow: -2px 0 0 $bg-info-color, 2px 0 $bg-info-color, 0 2px 0 $bg-info-color, 0 -2px 0 $bg-info-color, 1.5px 1.5px 0 $bg-info-color, -1.5px -1.5px 0 $bg-info-color, -1.5px 1.5px 0 $bg-info-color, 1.5px -1.5px 0 $bg-info-color;
			-webkit-text-stroke-color: $bg-info-color;
		}

		a.list-group-item-info:hover &,
		a.list-group-item-info:focus &,
		button.list-group-item-info:hover &,
		button.list-group-item-info:focus & {
			text-shadow: -2px 0 0 $bg-info-active-color, 2px 0 $bg-info-active-color, 0 2px 0 $bg-info-active-color, 0 -2px 0 $bg-info-active-color, 1.5px 1.5px 0 $bg-info-active-color, -1.5px -1.5px 0 $bg-info-active-color, -1.5px 1.5px 0 $bg-info-active-color, 1.5px -1.5px 0 $bg-info-active-color;
			-webkit-text-stroke-color: $bg-info-active-color;
		}


		.btn-default:hover &,
		.btn-default:focus &,
		.btn-default:active & {
			text-shadow: -2px 0 0 $bg-btn-default-hover-color, 2px 0 $bg-btn-default-hover-color, 0 2px 0 $bg-btn-default-hover-color, 0 -2px 0 $bg-btn-default-hover-color, 1.5px 1.5px 0 $bg-btn-default-hover-color, -1.5px -1.5px 0 $bg-btn-default-hover-color, -1.5px 1.5px 0 $bg-btn-default-hover-color, 1.5px -1.5px 0 $bg-btn-default-hover-color;
			-webkit-text-stroke-color: $bg-btn-default-hover-color;
		}

		.btn-default:active:hover &,
		.btn-default:active:focus & {
			text-shadow: -2px 0 0 $bg-btn-default-active-color, 2px 0 $bg-btn-default-active-color, 0 2px 0 $bg-btn-default-active-color, 0 -2px 0 $bg-btn-default-active-color, 1.5px 1.5px 0 $bg-btn-default-active-color, -1.5px -1.5px 0 $bg-btn-default-active-color, -1.5px 1.5px 0 $bg-btn-default-active-color, 1.5px -1.5px 0 $bg-btn-default-active-color;
			-webkit-text-stroke-color: $bg-btn-default-active-color;
		}


		.btn-success & {
			text-shadow: -2px 0 0 $bg-btn-success-color, 2px 0 $bg-btn-success-color, 0 2px 0 $bg-btn-success-color, 0 -2px 0 $bg-btn-success-color, 1.5px 1.5px 0 $bg-btn-success-color, -1.5px -1.5px 0 $bg-btn-success-color, -1.5px 1.5px 0 $bg-btn-success-color, 1.5px -1.5px 0 $bg-btn-success-color;
			-webkit-text-stroke-color: $bg-btn-success-color;
		}

		.btn-success:hover &,
		.btn-success:focus &,
		.btn-success:active & {
			text-shadow: -2px 0 0 $bg-btn-success-hover-color, 2px 0 $bg-btn-success-hover-color, 0 2px 0 $bg-btn-success-hover-color, 0 -2px 0 $bg-btn-success-hover-color, 1.5px 1.5px 0 $bg-btn-success-hover-color, -1.5px -1.5px 0 $bg-btn-success-hover-color, -1.5px 1.5px 0 $bg-btn-success-hover-color, 1.5px -1.5px 0 $bg-btn-success-hover-color;
			-webkit-text-stroke-color: $bg-btn-success-hover-color;
		}

		.btn-success:active:hover &,
		.btn-success:active:focus & {
			text-shadow: -2px 0 0 $bg-btn-success-active-color, 2px 0 $bg-btn-success-active-color, 0 2px 0 $bg-btn-success-active-color, 0 -2px 0 $bg-btn-success-active-color, 1.5px 1.5px 0 $bg-btn-success-active-color, -1.5px -1.5px 0 $bg-btn-success-active-color, -1.5px 1.5px 0 $bg-btn-success-active-color, 1.5px -1.5px 0 $bg-btn-success-active-color;
			-webkit-text-stroke-color: $bg-btn-success-active-color;
		}


		.btn-warning & {
			text-shadow: -2px 0 0 $bg-btn-warning-color, 2px 0 $bg-btn-warning-color, 0 2px 0 $bg-btn-warning-color, 0 -2px 0 $bg-btn-warning-color, 1.5px 1.5px 0 $bg-btn-warning-color, -1.5px -1.5px 0 $bg-btn-warning-color, -1.5px 1.5px 0 $bg-btn-warning-color, 1.5px -1.5px 0 $bg-btn-warning-color;
			-webkit-text-stroke-color: $bg-btn-warning-color;
		}

		.btn-warning:hover &,
		.btn-warning:focus &,
		.btn-warning:active & {
			text-shadow: -2px 0 0 $bg-btn-warning-hover-color, 2px 0 $bg-btn-warning-hover-color, 0 2px 0 $bg-btn-warning-hover-color, 0 -2px 0 $bg-btn-warning-hover-color, 1.5px 1.5px 0 $bg-btn-warning-hover-color, -1.5px -1.5px 0 $bg-btn-warning-hover-color, -1.5px 1.5px 0 $bg-btn-warning-hover-color, 1.5px -1.5px 0 $bg-btn-warning-hover-color;
			-webkit-text-stroke-color: $bg-btn-warning-hover-color;
		}

		.btn-warning:active:hover &,
		.btn-warning:active:focus & {
			text-shadow: -2px 0 0 $bg-btn-warning-active-color, 2px 0 $bg-btn-warning-active-color, 0 2px 0 $bg-btn-warning-active-color, 0 -2px 0 $bg-btn-warning-active-color, 1.5px 1.5px 0 $bg-btn-warning-active-color, -1.5px -1.5px 0 $bg-btn-warning-active-color, -1.5px 1.5px 0 $bg-btn-warning-active-color, 1.5px -1.5px 0 $bg-btn-warning-active-color;
			-webkit-text-stroke-color: $bg-btn-warning-active-color;
		}


		.nav-pills [data-toggle='tab']:hover &,
		.nav-pills [data-toggle='tab']:focus & {
			text-shadow: -2px 0 0 $bg-nav-pills-hover-color, 2px 0 $bg-nav-pills-hover-color, 0 2px 0 $bg-nav-pills-hover-color, 0 -2px 0 $bg-nav-pills-hover-color, 1.5px 1.5px 0 $bg-nav-pills-hover-color, -1.5px -1.5px 0 $bg-nav-pills-hover-color, -1.5px 1.5px 0 $bg-nav-pills-hover-color, 1.5px -1.5px 0 $bg-nav-pills-hover-color;
			-webkit-text-stroke-color: $bg-nav-pills-hover-color;
		}

		.nav-pills > .active > [data-toggle='tab'] & {
			text-shadow: -2px 0 0 $bg-nav-pills-active-color, 2px 0 $bg-nav-pills-active-color, 0 2px 0 $bg-nav-pills-active-color, 0 -2px 0 $bg-nav-pills-active-color, 1.5px 1.5px 0 $bg-nav-pills-active-color, -1.5px -1.5px 0 $bg-nav-pills-active-color, -1.5px 1.5px 0 $bg-nav-pills-active-color, 1.5px -1.5px 0 $bg-nav-pills-active-color;
			-webkit-text-stroke-color: $bg-nav-pills-active-color;
		}

		&[data-fa-glow*='black'] {
			text-shadow: -2px 0 0 #000, 2px 0 #000, 0 2px 0 #000, 0 -2px 0 #000, 1.5px 1.5px 0 #000, -1.5px -1.5px 0 #000, -1.5px 1.5px 0 #000, 1.5px -1.5px 0 #000;
			-webkit-text-stroke-color: #000;
		}

		&[data-fa-glow*='1px'],
		&[data-fa-glow*='2px'],
		&[data-fa-glow*='3px'] {
			text-shadow: none;
		}
	}
}