3d box with sass map

_box-settings.scss

//colors
$turquoise: #1abc9c;
$amethyst: #9b59b6;
$silver: #bdc3c7;
$emerland: #2ecc71;
$white: white;
$black: black;

//dimensions
$size: 100px;

//maps
$panes: (
  
  pane1: (
    transform: translateZ($size/2)
  ),
  pane2: (
    transform: rotateY(-90deg) translateZ($size/2)
  ),
  pane3: (
    transform: rotateX(90deg) translateZ($size/2)
  ),
  pane4: (
    transform: rotateX(90deg) rotateY(180deg) translateZ($size/2)
  ),
  pane5: (
    transform: rotateY(90deg) translateZ($size/2)
  ),
  pane6: (
    transform: rotateY(180deg) translateZ($size/2)
  )

);

//extends
%layer {
  width: $size;
  height: $size;
}

%center-stage {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translateX(-50%) translateY(-50%);
}

%button {
  background: $amethyst;
  color: $white;
  width: auto;
  height: auto;
  padding: 0.5em;
  border-radius: 20px;
}

%no-point-events {
  pointer-events: none;
}

%transition {
  transition: all 1s;
}

@mixin keyframes($name) {
  @-webkit-keyframes #{$name} {
    @content;
  }
}

//open animation
@include keyframes(pane1-open) {
  to {
    transform: translateZ($size);
    opacity: 0;
  }
}


@include keyframes(pane2-open) {
  to {
    transform: rotateY(-90deg) translateZ($size);
    opacity: 0;
  }
}


@include keyframes(pane3-open) {
  to {
    transform: rotateX(90deg) translateZ($size);
    opacity: 0;
  }
}


@include keyframes(pane4-open) {
  to {
    transform: rotateX(90deg) rotateY(180deg) translateZ($size);
    opacity: 0;
  }
}


@include keyframes(pane5-open) {
  to {
    transform: rotateY(90deg) translateZ($size);
    opacity: 0;
  }
}


@include keyframes(pane6-open) {
  to {
    transform: rotateY(180deg) translateZ($size);
    opacity: 0;
  }
}


//close animation
@include keyframes(pane1-close) {
  from {
    transform: translateZ($size);
    opacity: 0;
  }
  to {
    transform: translateZ($size / 2);
    opacity: 1;
  }
}


@include keyframes(pane2-close) {
  from {
    transform: rotateY(-90deg) translateZ($size);
    opacity: 0;
  }
  to {
    transform: rotateY(-90deg) translateZ($size / 2);
    opacity: 1;
  }
}


@include keyframes(pane3-close) {
  from {
    transform: rotateX(90deg) translateZ($size);
    opacity: 0;
  }
  to {
    transform: rotateX(90deg) translateZ($size / 2);
    opacity: 1;
  }
}


@include keyframes(pane4-close) {
  from {
    transform: rotateX(90deg) rotateY(180deg) translateZ($size);
    opacity: 0;
  }
  to {
    transform: rotateX(90deg) rotateY(180deg) translateZ($size / 2);
    opacity: 1;
  }
}


@include keyframes(pane5-close) {
  from {
    transform: rotateY(90deg) translateZ($size);
    opacity: 0;
  }
  to {
    transform: rotateY(90deg) translateZ($size / 2);
    opacity: 1;
  }
}


@include keyframes(pane6-close) {
  from {
    transform: rotateY(180deg) translateZ($size);
    opacity: 0;
  }
  to {
    transform: rotateY(180deg) translateZ($size / 2);
    opacity: 1;
  }
}

_box.scss

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  position: relative;
  font-family: sans-serif;
  font-size: 16px;
}

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  background: $silver;
}

fieldset,
button {
  border: none;
}

button {
  @extend %transition;
}

.box {
  @extend %center-stage;
  @extend %no-point-events;
  @extend %transition;
  -webkit-transform-style: preserve-3d;
  transform-style: preserve-3d;
  transform-origin: 0 0;
  transform: rotateX(45deg) rotateY(45deg) translateX(-$size / 2) translateY(-$size / 2);
  
  &,
  * {
    @extend %layer;
    position: absolute;
  }
  
  div {
    
    $i: 1;

    @each $pane, $paneProps in $panes {
      
      $paneTransform: map-get(map-get($panes, $pane), transform);

      &:nth-of-type( #{$i} ) {
          
          background: rgba( 
            mix( 
              $turquoise, 
              mix( $turquoise, $black, 30% ),
              100/$i ), 1 );

          border: 1px solid rgba( mix( $turquoise, $white, 80% ), 0.7 );

          @if $paneTransform {
            transform: $paneTransform;
          }
      }
     
     $i: $i + 1;

    }

  }

  .close {
    @extend %center-stage;
    @extend %button;
  }

}

.open {
  @extend %no-point-events;
  @extend %center-stage;
  @extend %button;
}		

index.html

<link rel="stylesheet" href="css/main.css" media="screen" />

<fieldset class="container">
	
	<input type="radio" class="trigger-close" name="trigger" checked />
	<input type="radio" class="trigger-open" name="trigger"/>

	<div class="box">
	  <div></div>
	  <div></div>
	  <div></div>
	  <button class="close">Close</button>
	  <div></div>
	  <div></div>
	  <div></div>
	</div>
	
	<button class="open">Open</button>

</fieldset>

main.scss

@import "box-settings";
@import "box";

.container {
	@extend %layer;
	@extend %center-stage;

	&:hover {
		button {
			background: $emerland;
		}
	}
}

[type="radio"] {
	@extend %layer;
	-webkit-appearance: none;
	outline: none;
	cursor: pointer;

	&:checked {
		display: none;
	}
}

.trigger-close {

	&:checked {
		
		~ .box .close { opacity: 0; }

		~ .box div {
			
			@for $i from 1 to 7 {
				&:nth-of-type(#{$i}) {
					-webkit-animation: pane#{$i}-close 1s forwards;
				}
			}

		}
	}

}

.trigger-open {

	&:checked {
		
		~ .open { opacity: 0; }
		
		~ .open {
			transform: translateX(-50%) translateY(-50%) scale(5);
			opacity: 0;
		}

		~ .box {
			transform: rotateX(0deg) rotateY(0deg) translateX(-$size/2) translateY(-$size/2);
	
			div {
				
				@for $i from 1 to 7 {
					&:nth-of-type(#{$i}) {
						-webkit-animation: pane#{$i}-open 1s forwards;
					}
				}
			}
		}

	}

}