CSS: Linear Gradient and Text Shadow for Buttons - less mixins

gradient-text-shadow-buttons.less

.linear-gradient( @from, @to ) {
	background-color: @to;
  	background-image: -webkit-gradient(linear, left top, left bottom, from(@from), to(@to)); /* Safari 4+, Chrome */
	background-image: -webkit-linear-gradient(top, @from, @to); /* Chrome 10+, Safari 5.1+, iOS 5+ */
	background-image:    -moz-linear-gradient(top, @from, @to); /* Firefox 3.6-15 */
	background-image:      -o-linear-gradient(top, @from, @to); /* Opera 11.10-12.00 */
	background-image:         linear-gradient(to bottom, @from, @to); /* Firefox 16+, IE10, Opera 12.50+ */
}

.linear-gradient( @from, @to: 0 ) when( @to = 0 ) {
	.base-gradient( @from );
}

.base-gradient( @from, @darken: 15% ) {
	@to: darken( @from, @darken );
	.linear-gradient( @from, @to );
}

.text-shadow( @shadowA, @shadowB:X, ... ) {
	// Multiple shadow solution from http://toekneestuck.com/blog/2012/05/15/less-css-arguments-variable/
	@props: ~`"@{arguments}".replace(/[\[\]]|\,\sX/g, '')`;
	text-shadow: @props; /* Firefox 3.5+, Opera 9+, Safari 1+, Chrome, IE10 */
}

.button ( @from, @to, @textColor, @textShadowColor: 0 ) when (@textShadowColor = 0){
	@textShadowColor: darken( @to, 70% );
	.button ( @from, @to, @textColor, @textShadowColor )
}

.button ( @from, @to, @textColor, @textShadowColor ) {
	@boxShadoWColor: lighten( @from, 50% );
	@lightenFrom: lighten( @from, 5% );
	@darkenTo: darken( @to, 5% );

	.linear-gradient( @from, @to );
	.box-shadow( inset 0 1px 0 0 @boxShadoWColor );
	.border-radius( all, 5px );
	.text-shadow( 1px 1px 0 @textShadowColor );
	border: 1px solid @to;
	color: @textColor;
	padding: 5px 12px;
	&:hover {
		.linear-gradient( @lightenFrom, @darkenTo );
	}
	&:active {
		.linear-gradient( @to, @from );
		.box-shadow( none );
	}
}