// Gradients

#gradient {

  // Horizontal gradient, from left to right
  //
  // Creates two color stops, start and end, by specifying a color and position for each color stop.
  // Color stops are not available in IE9 and below.
  @mixin horizontal($start-color: #555, $end-color: #333, $start-percent: 0%, $end-percent: 100%){
    background-image: -webkit-linear-gradient(left, $start-color $start-percent, $end-color $end-percent); // Safari 5.1-6, Chrome 10+
    background-image: -o-linear-gradient(left, $start-color $start-percent, $end-color $end-percent); // Opera 12
    background-image: linear-gradient(to right, $start-color $start-percent, $end-color $end-percent); // Standard, IE10, Firefox 16+, Opera 12.10+, Safari 7+, Chrome 26+
    background-repeat: repeat-x;
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str(argb($start-color))}', endColorstr='#{ie-hex-str(argb($end-color))}', GradientType=1); // IE9 and down
  }

  // Vertical gradient, from top to bottom
  //
  // Creates two color stops, start and end, by specifying a color and position for each color stop.
  // Color stops are not available in IE9 and below.
  @mixin vertical($start-color: #555, $end-color: #333, $start-percent: 0%, $end-percent: 100%){
    background-image: -webkit-linear-gradient(top, $start-color $start-percent, $end-color $end-percent);  // Safari 5.1-6, Chrome 10+
    background-image: -o-linear-gradient(top, $start-color $start-percent, $end-color $end-percent);  // Opera 12
    background-image: linear-gradient(to bottom, $start-color $start-percent, $end-color $end-percent); // Standard, IE10, Firefox 16+, Opera 12.10+, Safari 7+, Chrome 26+
    background-repeat: repeat-x;
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str(argb($start-color))}', endColorstr='#{ie-hex-str(argb($end-color))}', GradientType=0); // IE9 and down
  }

  @mixin directional($start-color: #555, $end-color: #333, $deg: 45deg){
    background-repeat: repeat-x;
    background-image: -webkit-linear-gradient($deg, $start-color, $end-color); // Safari 5.1-6, Chrome 10+
    background-image: -o-linear-gradient($deg, $start-color, $end-color); // Opera 12
    background-image: linear-gradient($deg, $start-color, $end-color); // Standard, IE10, Firefox 16+, Opera 12.10+, Safari 7+, Chrome 26+
  }
  @mixin horizontal-three-colors($start-color: #00b3ee, $mid-color: #7a43b6, $color-stop: 50%, $end-color: #c3325f){
    background-image: -webkit-linear-gradient(left, $start-color, $mid-color $color-stop, $end-color);
    background-image: -o-linear-gradient(left, $start-color, $mid-color $color-stop, $end-color);
    background-image: linear-gradient(to right, $start-color, $mid-color $color-stop, $end-color);
    background-repeat: no-repeat;
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str(argb($start-color))}', endColorstr='#{ie-hex-str(argb($end-color))}', GradientType=1); // IE9 and down, gets no color-stop at all for proper fallback
  }
  @mixin vertical-three-colors($start-color: #00b3ee, $mid-color: #7a43b6, $color-stop: 50%, $end-color: #c3325f){
    background-image: -webkit-linear-gradient($start-color, $mid-color $color-stop, $end-color);
    background-image: -o-linear-gradient($start-color, $mid-color $color-stop, $end-color);
    background-image: linear-gradient($start-color, $mid-color $color-stop, $end-color);
    background-repeat: no-repeat;
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str(argb($start-color))}', endColorstr='#{ie-hex-str(argb($end-color))}', GradientType=0); // IE9 and down, gets no color-stop at all for proper fallback
  }
  @mixin radial($inner-color: #555, $outer-color: #333){
    background-image: -webkit-radial-gradient(circle, $inner-color, $outer-color);
    background-image: radial-gradient(circle, $inner-color, $outer-color);
    background-repeat: no-repeat;
  }
  @include striped($color: rgba(255,255,255,.15), $angle: 45deg) {
    background-image: -webkit-linear-gradient($angle, $color 25%, transparent 25%, transparent 50%, $color 50%, $color 75%, transparent 75%, transparent);
    background-image: -o-linear-gradient($angle, $color 25%, transparent 25%, transparent 50%, $color 50%, $color 75%, transparent 75%, transparent);
    background-image: linear-gradient($angle, $color 25%, transparent 25%, transparent 50%, $color 50%, $color 75%, transparent 75%, transparent);
  }
}
