/**
 * Carbon Fiber background pattern
 *
 * @author Lea Verou http://lea.verou.me/ for the original pattern
 * @author David Kaneda http://www.davidkaneda.com/ for the Sass mixin
 *
 * @link http://lea.verou.me/css3patterns/
 *
 */

@import "compass/css3/images";

$base-color: #222 !default;

@mixin background-carbon-fiber(
    $background-color: $base-color,
    $dot-color: scale-lightness($background-color, -50),
    $highlight-color: rgba(#fff, .1),
    $spacing-size: 16px,
    $dot-size: 2px
) {
    @include background-image(
        radial-gradient($dot-color $dot-size, rgba(darken($dot-color, 5), 0) $dot-size + 1),
        radial-gradient($dot-color $dot-size, rgba(darken($dot-color, 5), 0) $dot-size + 1),
        radial-gradient($highlight-color $dot-size, rgba(#fff, 0) $dot-size + 1px),
        radial-gradient($highlight-color $dot-size, rgba(#fff, 0) $dot-size + 1px)
    );

    background-repeat: repeat;
    background-position: 0 0, $spacing-size/2 $spacing-size/2, 0 1px, $spacing-size/2 $spacing-size/2 + 1px;
    background-color: $background-color;
    background-size: $spacing-size $spacing-size;
}