// Hamburger
// ==================================================
.hamburger {
  padding: $hamburger-padding-y $hamburger-padding-x;
  display: inline-block;
  cursor: pointer;

  -webkit-transition-property: opacity, -webkit-filter;

  transition-property: opacity, -webkit-filter;

  transition-property: opacity, filter;

  transition-property: opacity, filter, -webkit-filter;
  -webkit-transition-duration: $hamburger-hover-transition-duration;
          transition-duration: $hamburger-hover-transition-duration;
  -webkit-transition-timing-function: $hamburger-hover-transition-timing-function;
          transition-timing-function: $hamburger-hover-transition-timing-function;

  // Normalize (<button>)
  font: inherit;
  color: inherit;
  text-transform: none;
  background-color: transparent;
  border: 0;
  margin: 0;
  overflow: visible;

  &:hover {
    @if $hamburger-hover-use-filter == true {
      -webkit-filter: $hamburger-hover-filter;
              filter: $hamburger-hover-filter;
    }
  }
}

.hamburger-box {
  width: 30px;
  height: 16px;
  display: inline-block;
  position: relative;
}

.hamburger-inner {
  display: block;
  top: 50%;
  margin-top: $hamburger-layer-height / -2;
  background: white;
  &,
  &::before,
  &::after {
    background: white;
    width: 30px;
    height: 2px;
    border-radius: $hamburger-layer-border-radius;
    position: absolute;
    -webkit-transition-property: -webkit-transform;
    transition-property: -webkit-transform;
    transition-property: transform;
    transition-property: transform, -webkit-transform;
    -webkit-transition-duration: 0.15s;
            transition-duration: 0.15s;
    -webkit-transition-timing-function: ease;
            transition-timing-function: ease;
  }

  &::before,
  &::after {
    content: "";
    display: block;
  }

  &::before {
    top: -7px;
  }

  &::after {
    bottom: -7px;
  }
}