Bootstrap/less/bootstrap.less

/*
  Bootstrap v1.1
  Variables and mixins to bootstrap any new web development project. Modified from original version for Twitter Blueprint.
*/


/* Variables
-------------------------------------------------- */

// Links
@link-color:        #0069d6;
@link-hover-color:  darken(@link-color, 10);

// Grays
@white:             #fff;
@gray-lighter:      #ccc;
@gray-light:        #777;
@gray:              #555;
@gray-dark:         #333;
@black:             #000;

// Accent Colors
@blue:              #08b5fb;
@blue-dark:         #0069d6;
@green:             #46a546;
@red:               #9d261d;
@yellow:            #ffc40d;
@orange:            #f89406;
@pink:              #c3325f;
@purple:            #7a43b6;

// Baseline grid
@baseline:          20px;

// Griditude
@grid_columns:        16;
@grid_column_width:   40px;
@grid_gutter_width:   20px;
@site_width:          (@grid_columns * @grid_column_width) + (@grid_gutter_width * (@grid_columns - 1));


/* Mixins
-------------------------------------------------- */

// Clearfix for clearing floats like a boss
.clearfix {
  zoom: 1;
	&:after {
    display: block;
    visibility: hidden;
    height: 0;
    clear: both;
    content: ".";
	}
}

// Floats
.right {
  float: right;
}
.left {
  float: left;
}

// Input placeholder text
.placeholder(@color: @gray-light) {
  :-moz-placeholder {
    color: @color;
  }
  ::-webkit-input-placeholder {
    color: @color;
  }
}

// Font Stacks
.font(@weight: normal, @size: 14px, @lineheight: 20px) {
  font-size: @size;
  font-weight: @weight;
  line-height: @lineheight;
}
.sans-serif(@weight: normal, @size: 14px, @lineheight: 20px) {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: @size;
  font-weight: @weight;
  line-height: @lineheight;
}
.serif(@weight: normal, @size: 14px, @lineheight: 20px) {
  font-family: "Georgia", Times New Roman, Times, sans-serif;
  font-size: @size;
  font-weight: @weight;
  line-height: @lineheight;
}
.monospace(@weight: normal, @size: 12px, @lineheight: 20px) {
  font-family: "Monaco", Courier New, monospace;
  font-size: @size;
  font-weight: @weight;
  line-height: @lineheight;
}

// Grid System
.container {
  width: @site_width;
  margin: 0 auto;
}
.columns(@column_span: 1) {
  display: inline;
  float: left;
  width: (@grid_column_width * @column_span) + (@grid_gutter_width * (@column_span - 1));
  margin-left: @grid_gutter_width;
  &:first-child {
    margin-left: 0;
  }
}
.offset(@column_offset: 1) {
  margin-left: (@grid_column_width * @column_offset) + (@grid_gutter_width * (@column_offset - 1)) !important;
}

// Border Radius
.border-radius(@radius: 5px) {
  -moz-border-radius: @radius;
  border-radius: @radius;
}

// Drop shadows
.box-shadow(@shadow: 0 1px 3px rgba(0,0,0,.25)) {
  -webkit-box-shadow: @shadow;
  -moz-box-shadow: @shadow;
  box-shadow: @shadow;
}

// Transitions
.transition(@transition) {
	-webkit-transition: @transition;
	-moz-transition: @transition;
	transition: @transition;
}

// CSS3 Content Columns
.content-columns(@column_count, @column_gap: 20px) {
	-webkit-column-count: @count;
	-webkit-column-gap: @gap;
	-moz-column-count: @count;
	-moz-column-gap: @gap;
	column-count: @count;
	column-gap: @gap;
}

// Buttons
.button(@color: #f9f9f9, @padding: 4px 14px, @text_color: #555, @text_shadow: 0 1px 0 rgba(255,255,255,.75), @font_size: 13px, @border_color: rgba(0,0,0,.1), @rounded: 4px) {
  display: inline-block;
  #gradient > .vertical-three-colors(@color, @color, 0.25, darken(@color, 10%));
  padding: @padding;
  text-shadow: @text_shadow;
  color: @text_color;
  line-height: @baseline;
  border: 1px solid @border_color;
  border-bottom-color: fadein(@border_color, 15%);
  .border-radius(@rounded);
  @shadow: inset 0 1px 0 rgba(255,255,255,.25), 0 1px 2px rgba(0,0,0,.1);
  .box-shadow(@shadow);
  cursor: pointer;
  &:hover {
    background-position: 0 -15px;
    color: darken(@text_color, 10%);
    text-decoration: none;
  }
}

// Add an alphatransparency value to any background or border color (via Elyse Holladay)
#translucent {
  .background(@color: @white, @alpha: 1) {
    background-color: hsla(hue(@color), saturation(@color), lightness(@color), @alpha);
	}
	.border(@color: @white, @alpha: 1) {
		border-color: hsla(hue(@color), saturation(@color), lightness(@color), @alpha);
		background-clip: padding-box;
	}
}

// Gradients
#gradient {
  .horizontal(@startColor: #555, @endColor: #333) {
    background-color: @endColor;
    background-repeat: no-repeat;
    background-image: -webkit-gradient(linear, left top, right top, from(@startColor), to(@endColor));
    background-image: -webkit-linear-gradient(right center, @startColor, @endColor);
    background-image: -moz-linear-gradient(right center, @startColor, @endColor);
    background-image: -o-linear-gradient(left,  @startColor,  @endColor);
    background-image: -khtml-gradient(linear, left top, right top, from(@startColor), to(@endColor));
    filter: e(%("progid:DXImageTransform.Microsoft.Gradient(StartColorStr='%d', EndColorStr='%d', GradientType=1)",@startColor,@endColor));
    -ms-filter: %("progid:DXImageTransform.Microsoft.gradient(startColorStr='%d', EndColorStr='%d', GradientType=1))",@startColor,@endColor);
  }
  .vertical(@startColor: #555, @endColor: #333) {
    background-color: @endColor;
    background-repeat: no-repeat;
    background-image: -webkit-gradient(linear, left top, left bottom, from(@startColor), to(@endColor));
    background-image: -webkit-linear-gradient(@startColor, @endColor);
    background-image: -moz-linear-gradient(@startColor, @endColor);
    background-image: -o-linear-gradient(top,  @startColor,  @endColor);
    background-image: -khtml-gradient(linear, left top, left bottom, from(@startColor), to(@endColor));
    filter: e(%("progid:DXImageTransform.Microsoft.Gradient(StartColorStr='%d', EndColorStr='%d', GradientType=0)",@startColor,@endColor));
    -ms-filter: %("progid:DXImageTransform.Microsoft.gradient(startColorStr='%d', EndColorStr='%d', GradientType=0))",@startColor,@endColor);
  }
  .vertical-three-colors(@startColor: #00b3ee, @midColor: #7a43b6, @colorStop: 0.5, @endColor: #c3325f) {
    background-color: @endColor;
    background-repeat: no-repeat;
    background-image: -webkit-gradient(linear, 0 0, 0 100%, from(@startColor), color-stop(@colorStop, @midColor), to(@endColor));
    background-image: -webkit-linear-gradient(@startColor, color-stop(@colorStop, @midColor), @endColor);
    background-image: -moz-linear-gradient(@startColor, color-stop(@midColor, @colorStop), @endColor);
  }
}