.container
  .content
    h1.
      CSS3 Icons
    .icon-container
      .icon.icon-fill
        i.fa.fa-home
      .icon.icon-enter
        i.fa.fa-user
      .icon.icon-expand 
        i.fa.fa-bars
      .icon.icon-collapse
        i.fa.fa-sign-in
      .icon.icon-rotate
        i.fa.fa-phone

$icon-size    : 60px;
$border-radius: 0.5;//15% = 0.15, 50% = 0.50 etc.

$background   : #2d2c3e;
$background-b : #2d2c3e;

// Icon Colors
$green        : #16A085;
$red          : #C82647;
$green-l      : #8CC63F;
$orange       : #EB9532;
$purple       : #7E3661;

// Text
$white      : #FFFFFF;

body{
  background: $background-b;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow: hidden;
  z-index: -1;
}

.container{
  display: table;
  height: 95vh;
  width: 90%;
  padding-bottom: 5vh;
  margin: auto auto;
  @media (max-width: 900px){
  }
  background: $background;
  z-index: -1;
}

.content{
  display: table-cell;
  text-align: center;
  vertical-align: middle;
}

h1{
  font-family: 'Lato', sans-serif;
  font-size: 36px;
  font-weight: 300;
  color: $white;
}

.icon-container{
  margin-top: 30px;
  width: 100%;
  height: $icon-size;
}

.icon{
  cursor: pointer;
  position: relative;
  display: inline-block;
  width: $icon-size;
  height: $icon-size;
  margin-left: $icon-size/5;
  margin-right: $icon-size/5;
  border-radius: $icon-size*$border-radius;
  overflow: hidden;
  &::before, &::after{
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    transition: all 0.25s ease;
    border-radius: $icon-size*$border-radius;
  }
  i{
    position: relative;
    color: $white;
    font-size: $icon-size/2;
    margin-top: $icon-size/4;
    transition: all 0.25s ease;
  }
}

.icon-fill{
  &::before{
    transition-duration: 0.5s;
    box-shadow: inset 0 0 0 1px $green;
  }
  &:hover::before{
    box-shadow: inset 0 0 0 $icon-size $green;
  }
}

.icon-enter{
  &::after{
    box-shadow: inset 0 0 0 1px $orange;
  }
  &::before{
    border-radius: 0;
    margin-left: -100%;
    box-shadow: inset 0 0 0 $icon-size $orange;
  }
  &:hover::before{
    margin-left: 0;
  }
}

.icon-expand{
  &::after{
    box-shadow: inset 0 0 0 1px $red;
  }
  &::before{
    background: $red;
    box-shadow: inset 0 0 0 $icon-size $background;
  }
  &:hover::before{
    box-shadow: inset 0 0 0 1px $background;
  }
}

.icon-collapse{
  &::before{
    border-radius: 0;
  }
  &:hover::before{
    box-shadow: 
    inset 0 $icon-size/2 0 0 $green-l,
    inset 0 $icon-size/-2 0 0 $green-l;
  }
  &::after{
    box-shadow: inset 0 0 0 1px $green-l;
  }
}

.icon-rotate{
  box-shadow: inset 0 0 0 1px $purple;
  &::after, &::before{
    border: 0px solid transparent;
  }
  &:hover::before{
    transition:
      border-top-width 0.3s ease,
      border-top-color 0.3s ease;
    border-width: $icon-size;
    border-top-color: $purple;
  }
  &:hover::after{
    transition:
      border-left-width 0.3s ease,
      border-left-color 0.3s ease;
    border-width: $icon-size;
    border-left-color: $purple;
  }
  &:hover{
    transition: background 0.001s ease 0.3s;
    background: $purple;
  }
  i{
    z-index: 1;
  }
}

/*
Bug: For Icon #3, background needs to be set to the color behind it to be matched.
*/

// ∑ //