Rocket.Chat/packages/rocketchat-theme/server/lesshat.less

.calc(...) {
	@process: ~`(function(a){function c(c,t){var r=");\n",s=e.split(","),l=s[0]+":"+c+"("+(s[1].trim()||0)+r;"start"==t?a="0;\n"+l:a+=l}a=a||8121991;var t="@{state}",e=a;if(8121991==a)return a;switch(t){case"1":c("-webkit-calc","start"),c("-moz-calc"),c("calc");break;case"2":c("-webkit-calc","start"),c("-moz-calc");break;case"3":c("-webkit-calc","start"),c("calc");break;case"4":c("-webkit-calc","start");break;case"5":c("-moz-calc","start"),c("calc");break;case"6":c("-moz-calc","start");break;case"7":c("calc","start")}return a=a.replace(/;$/g,"")})((function(){var r="@{arguments}";return r=r.replace(/^\[|\]$/g,"")})())`;
	@state: 1; -lh-property: @process;
}

.transform(...) {
	@process: ~`(function(e){e=e||"none";var r={translate:"px",rotate:"deg",rotate3d:"deg",skew:"deg"};/^\w*\(?[a-z0-9.]*\)?/.test(e)&&(e=e.replace(/(?:,)(?![^(]*\))/g,""));for(var t in r)e.indexOf(t)>=0&&(e=e.replace(new RegExp(t+"[\\w]?\\([a-z0-9, %]*\\)"),function(e){var n=/(\d+\.?\d*)(?!\w|%)/g;return"rotate3d"==t&&(n=/,\s*\d+$/),e.replace(n,function(e){return e+r[t]})}));return e})((function(){var r="@{arguments}";return r=r.replace(/^\[|\]$/g,"")})())`;
	-webkit-transform: @process;
	-moz-transform: @process;
	-ms-transform: @process;
	-o-transform: @process;
	transform: @process;
}

.gradient(@startColor: #eee, @endColor: white) {
	background: linear-gradient(to top, @startColor, @endColor);
}

.input-shade(@color, @bg) {
	input,
	select,
	textarea {
		color: @color;
		background-color: transparent;
		border-color: mix(contrast(@bg), @bg, 10%);
		border-style: solid;

		&::placeholder {
			color: mix(@color, @bg, 75%);
		}

		&[disabled] {
			background-color: mix(contrast(@bg), @bg, 10%);
		}
	}

	.disabled label,
	[disabled] label {
		color: mix(@color, @bg, 75%);
	}

	.-autocomplete-container {
		background-color: mix(contrast(@bg), @bg, 10%);
	}

	.-autocomplete-item.selected {
		background-color: mix(contrast(@bg), @bg, 20%);
	}

	input[type="button"],
	input[type="submit"] {
		color: @color;
		background: mix(contrast(@bg), @bg, 10%);
		border-color: mix(contrast(@bg), @bg, 10%);
	}
}

.blink(@color) {
	animation-duration: 1000ms;
	animation-name: blink;
	animation-iteration-count: infinite;
	animation-direction: alternate;

	@keyframes blink {
		from {
			color: @color;
		}

		to {
			opacity: inherit;
		}
	}

	@-webkit-keyframes blink {
		from {
			color: @color;
		}

		to {
			color: inherit;
		}
	}
}

.linkColors(@color, @hover) {
	color: @color;

	&:hover {
		color: @hover;
	}
}

.buttonColors(@color, @bg) {
	color: @color;
	background-color: @bg;

	&:hover {
		color: mix(@color, contrast(@bg), 60%);
		background-color: mix(@bg, contrast(@color), 60%);
	}
}