open-nomad/ui/app/styles/components/gutter.scss

.gutter {
  height: 100%;
  border-right: 1px solid $grey-blue;
  overflow: hidden;

  .collapsed-only {
    display: none;
  }

  @media #{$mq-hidden-gutter} {
    border-right: none;

    &.is-open {
      box-shadow: 0 0 30px darken($nomad-green-darker, 20%);
    }

    .collapsed-only {
      display: inherit;
    }
  }

  .collapsed-menu {
    display: none;
    position: relative;
    height: 3.5rem;
    width: $gutter-width;
    transform: translateX($gutter-width);
    z-index: $z-gutter;
    transition: transform ease-in-out 0.2s;

    &.is-open {
      transform: translateX(0);
    }

    .gutter-toggle {
      fill: $grey-light;
    }

    .nomad-logo {
      fill: $grey-light;
    }

    .logo-container {
      display: flex;
      align-items: center;
      height: 100%;
      padding: 0.5rem 1rem;
      margin-left: 20px;
    }

    @media #{$mq-hidden-gutter} {
      display: block;
    }
  }

  .menu {
    z-index: $z-gutter;
  }
}

// Treated as an element of the gutter component despite not being nested within
// for z-index reasons.
.gutter-backdrop {
  display: block;
  position: fixed;
  background: darken($nomad-green-darker, 10%);
  opacity: 0;
  width: calc(100vw + #{$gutter-width});
  height: 100vh;
  top: 0;
  left: 0;
  transform: translateY(-100%);
  transition: opacity ease-in-out 0.2s;
  z-index: $z-gutter-backdrop;

  @media #{$mq-hidden-gutter} {
    &.is-open {
      transform: translateY(0);
      opacity: 0.7;
    }
  }
}