/* 3d mixins */
@mixin preserve-3d(){
    transform-style: preserve-3d;
    -webkit-transform-style: preserve-3d;
    -moz-transform-style: preserve-3d;
    -o-transform-style: preserve-3d;
}

@mixin backface(){
    backface-visibility:hidden;
    -webkit-backface-visibility:hidden;
    -moz-backface-visibility:hidden;
    -ms-backface-visibility:hidden;
}
/* end 3d mixins */

// Transformations
@mixin scale($ratio...) {
  -webkit-transform: scale($ratio);
      -ms-transform: scale($ratio); // IE9 only
       -o-transform: scale($ratio);
          transform: scale($ratio);
}

@mixin scaleX($ratio) {
  -webkit-transform: scaleX($ratio);
      -ms-transform: scaleX($ratio); // IE9 only
       -o-transform: scaleX($ratio);
          transform: scaleX($ratio);
}
@mixin scaleY($ratio) {
  -webkit-transform: scaleY($ratio);
      -ms-transform: scaleY($ratio); // IE9 only
       -o-transform: scaleY($ratio);
          transform: scaleY($ratio);
}
@mixin skew($x, $y) {
  -webkit-transform: skewX($x) skewY($y);
      -ms-transform: skewX($x) skewY($y); // See https://github.com/twbs/bootstrap/issues/4885; IE9+
       -o-transform: skewX($x) skewY($y);
          transform: skewX($x) skewY($y);
}
@mixin translate($x, $y) {
  -webkit-transform: translate($x, $y);
      -ms-transform: translate($x, $y); // IE9 only
       -o-transform: translate($x, $y);
          transform: translate($x, $y);
}

@mixin multiTranslate($arg) {
  -webkit-transform: $arg;
      -ms-transform: $arg; // IE9 only
       -o-transform: $arg;
          transform: $arg;
}

@mixin translate3d($x, $y, $z) {
  -webkit-transform: translate3d($x, $y, $z);
          transform: translate3d($x, $y, $z);
}
@mixin rotate($degrees) {
  -webkit-transform: rotate($degrees);
      -ms-transform: rotate($degrees); // IE9 only
       -o-transform: rotate($degrees);
          transform: rotate($degrees);
}
@mixin rotateX($degrees) {
  -webkit-transform: rotateX($degrees);
      -ms-transform: rotateX($degrees); // IE9 only
       -o-transform: rotateX($degrees);
          transform: rotateX($degrees);
}
@mixin rotateY($degrees) {
  -webkit-transform: rotateY($degrees);
      -ms-transform: rotateY($degrees); // IE9 only
       -o-transform: rotateY($degrees);
          transform: rotateY($degrees);
}
@mixin perspective($perspective) {
  -webkit-perspective: $perspective;
     -moz-perspective: $perspective;
          perspective: $perspective;
}
@mixin perspective-origin($perspective) {
  -webkit-perspective-origin: $perspective;
     -moz-perspective-origin: $perspective;
          perspective-origin: $perspective;
}
@mixin transform-origin($origin) {
  -webkit-transform-origin: $origin;
     -moz-transform-origin: $origin;
      -ms-transform-origin: $origin; // IE9 only
          transform-origin: $origin;
}


// Transitions
@mixin transition($transition...) {
  -webkit-transition: $transition;
       -o-transition: $transition;
          transition: $transition;
}
@mixin transition-property($transition-property...) {
  -webkit-transition-property: $transition-property;
          transition-property: $transition-property;
}
@mixin transition-delay($transition-delay) {
  -webkit-transition-delay: $transition-delay;
          transition-delay: $transition-delay;
}
@mixin transition-duration($transition-duration...) {
  -webkit-transition-duration: $transition-duration;
          transition-duration: $transition-duration;
}
@mixin transition-timing-function($timing-function) {
  -webkit-transition-timing-function: $timing-function;
          transition-timing-function: $timing-function;
}
@mixin transition-transform($transition...) {
  -webkit-transition: -webkit-transform $transition;
     -moz-transition: -moz-transform $transition;
       -o-transition: -o-transform $transition;
          transition: transform $transition;
}

// Opacity

@mixin opacity($opacity) {
  opacity: $opacity;
  // IE8 filter
  $opacity-ie: ($opacity * 100);
  filter: #{alpha(opacity=$opacity-ie)};
}

@mixin font-awesome-icon {
  display: inline-block;
  font: normal normal normal 14px/1 FontAwesome;
  font-size: inherit;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}