/* ADDS A BROWSER PREFIX TO THE PROPERTY */
@mixin css3-prefix($property, $value) {
  -webkit-#{$property}: #{$value};
  -khtml-#{$property}: #{$value};
  -moz-#{$property}: #{$value};
  -ms-#{$property}: #{$value};
  -o-#{$property}: #{$value};
  #{$property}: #{$value};
}

/* BACKGROUND GRADIENT */
@mixin background-gradient($startColor: #3C3C3C, $endColor: #999999) {
  background-color: $startColor;
  background-image: -webkit-gradient(linear, left top, left bottom, from($startColor), to($endColor));
  background-image: -webkit-linear-gradient(top, $startColor, $endColor);
  background-image:    -moz-linear-gradient(top, $startColor, $endColor);
  background-image:     -ms-linear-gradient(top, $startColor, $endColor);
  background-image:      -o-linear-gradient(top, $startColor, $endColor);
  background-image:         linear-gradient(top, $startColor, $endColor);
  filter:            progid:DXImageTransform.Microsoft.gradient(startColorStr='#{$startColor}', endColorStr='#{$endColor}');
}

/* BACKGROUND HORIZONTAL */
@mixin background-horizontal($startColor: #3C3C3C, $endColor: #999999) {
  background-color: $startColor;
  background-image: -webkit-gradient(linear, left top, right top, from($startColor), to($endColor));
  background-image: -webkit-linear-gradient(left, $startColor, $endColor);
  background-image:    -moz-linear-gradient(left, $startColor, $endColor);
  background-image:     -ms-linear-gradient(left, $startColor, $endColor);
  background-image:      -o-linear-gradient(left, $startColor, $endColor);
  background-image:         linear-gradient(left, $startColor, $endColor);
  filter:            progid:DXImageTransform.Microsoft.gradient(startColorStr='#{$startColor}', endColorStr='#{$endColor}', gradientType='1');
}

/* BACKGROUND RADIAL */
@mixin background-radial($startColor: #FFFFFF, $startPos: 0%, $endColor: #000000, $endPos:100%) {
  background: -moz-radial-gradient(center, ellipse cover, $startColor $startPos, $endColor $endPos);
  background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop($startPos,$startColor), color-stop($endPos,$endColor));
  background: -webkit-radial-gradient(center, ellipse cover, $startColor $startPos,$endColor $endPos);
  background: -o-radial-gradient(center, ellipse cover, $startColor $startPos,$endColor $endPos);
  background: -ms-radial-gradient(center, ellipse cover, $startColor $startPos,$endColor $endPos);
  background: radial-gradient(ellipse at center, $startColor $startPos,$endColor $endPos);
}

/* BACKGROUND SIZE */
@mixin background-size($width: 100%, $height: $width) {
  @if type-of($width) == 'number' and $height != null {
    @include css3-prefix('background-size', $width $height);
  } @else {
    @include css3-prefix('background-size', $width);
  }
}

/* BACKGROUND COLOR OPACITY */
@mixin background-opacity($color: #000, $opacity: 0.85) {
  background: $color;
  background: rgba($color, $opacity);
}

/* BORDER RADIUS */
@mixin border-radius($radius: 5px) {
  @include css3-prefix('border-radius', $radius);
}

@mixin border-radius-separate($topLeftRadius: 5px, $topRightRadius: 5px, $bottomLeftRadius: 5px, $bottomRightRadius: 5px) {
  -webkit-border-top-left-radius:     $topLeftRadius;
  -webkit-border-top-right-radius:    $topRightRadius;
  -webkit-border-bottom-right-radius: $bottomRightRadius;
  -webkit-border-bottom-left-radius:  $bottomLeftRadius;

  -moz-border-radius-topleft:     $topLeftRadius;
  -moz-border-radius-topright:    $topRightRadius;
  -moz-border-radius-bottomright: $bottomRightRadius;
  -moz-border-radius-bottomleft:  $bottomLeftRadius;

  border-top-left-radius:     $topLeftRadius;
  border-top-right-radius:    $topRightRadius;
  border-bottom-right-radius: $bottomRightRadius;
  border-bottom-left-radius:  $bottomLeftRadius;
}

/* BOX */
@mixin box($orient: horizontal, $pack: center, $align: center) {
  display: -webkit-box;
  display: -moz-box;
  display: box;

  @include css3-prefix('box-orient', $orient);
  @include css3-prefix('box-pack', $pack);
  @include css3-prefix('box-align', $align);
}

/* BOX RGBA */
@mixin box-rgba($r: 60, $g: 3, $b: 12, $opacity: 0.23, $color: #3C3C3C) {
  background-color: transparent;
  background-color: rgba($r, $g, $b, $opacity);
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{$color}',endColorstr='#{$color}');
  zoom:   1;
}


/* BOX SHADOW */
@mixin box-shadow($x: 2px, $y: 2px, $blur: 5px, $color: rgba(0,0,0,.4), $inset: "") {
  @if ($inset != "") {
    @include css3-prefix('box-shadow', $inset $x $y $blur $color);
  } @else {
    @include css3-prefix('box-shadow', $x $y $blur $color);
  }
}

/* BOX SIZING */
@mixin box-sizing($type: border-box) {
  @include css3-prefix('box-sizing', $type);
}

/* COLUMNS */
@mixin columns($count: 3, $gap: 10) {
  @include css3-prefix('column-count', $count);
  @include css3-prefix('column-gap', $gap);
}

/* DOUBLE BORDERS */
@mixin double-borders($colorOne: #3C3C3C, $colorTwo: #999999, $radius: 0) {
  border: 1px solid $colorOne;

  @include css3-prefix('box-shadow', 0 0 0 1px $colorTwo);

  @include border-radius( $radius );
}

/* FLEX */
@mixin flex($value: 1) {
  @include css3-prefix('box-flex', $value);
}

/* FLIP */
@mixin flip($scaleX: -1) {
  @include css3-prefix('transform', scaleX($scaleX));
  filter:            FlipH;
  -ms-filter:        "FlipH";
}

/* FONT FACE */
@mixin font-face($fontFamily: myFont, $eotFileSrc: 'myFont.eot', $woffFileSrc: 'myFont.woff', $ttfFileSrc: 'myFont.ttf') {
  font-family: $fontFamily;
  src: url($eotFileSrc)  format('eot'),
  url($woffFileSrc) format('woff'),
  url($ttfFileSrc)  format('truetype');
}

/* OPACITY */
@mixin opacity($opacity: 0.5) {
  $opacityMultiplied: ($opacity * 100);

  filter:         alpha(opacity=$opacityMultiplied);
  -ms-filter:     "progid:DXImageTransform.Microsoft.Alpha(Opacity=" + $opacityMultiplied + ")";
  @include css3-prefix('opacity', $opacity);
}


/* OUTLINE RADIUS */
@mixin outline-radius($radius: 5px) {
  @include css3-prefix('outline-radius', $radius);
}

/* RESIZE */
@mixin resize($direction: both) {
  @include css3-prefix('resize', $direction);
}

/* ROTATE*/
@mixin rotate($deg: 0, $m11: 0, $m12: 0, $m21: 0, $m22: 0) {
  @include css3-prefix('transform', rotate($deg + deg));
  filter: progid:DXImageTransform.Microsoft.Matrix(
                  M11=#{$m11}, M12=#{$m12}, M21=#{$m21}, M22=#{$m22}, sizingMethod='auto expand');
  zoom: 1;
}

/* TEXT SHADOW */
@mixin text-shadow($x: 2px, $y: 2px, $blur: 5px, $color: rgba(0,0,0,.4)) {
  text-shadow: $x $y $blur $color;
}

/* TRANSFORM  */
@mixin transform($params) {
  @include css3-prefix('transform', $params);
}

/* TRANSFORM STYLE */
@mixin transform-style($style: preserve-3d) {
  @include css3-prefix('transform-style', $style);
}

/* TRANSITION */
@mixin transition($properties...) {

  @if length($properties) >= 1 {
    @include css3-prefix('transition', $properties);
  }

  @else {
    @include css3-prefix('transition','all 300ms linear 0ms');
  }
}

/* TRIPLE BORDERS */
@mixin triple-borders($colorOne: #3C3C3C, $colorTwo: #999999, $colorThree: #000000, $radius: 0) {
  border: 1px solid $colorOne;

  @include border-radius($radius);

  @include css3-prefix('box-shadow', 0 0 0 1px $colorTwo, 0 0 0 2px $colorThree);
}

/* KEYFRAMES */
@mixin keyframes($animation-name) {
  @-webkit-keyframes #{$animation-name} {
    @content;
  }
  @-moz-keyframes #{$animation-name} {
    @content;
  }
  @-ms-keyframes #{$animation-name} {
    @content;
  }
  @-o-keyframes #{$animation-name} {
    @content;
  }
  @keyframes #{$animation-name} {
    @content;
  }
}

/* ANIMATION */
@mixin animation($str) {
  @include css3-prefix('animation', $str);
}