.graph-explorer-halo {
  position: absolute;
  pointer-events: none;

  border: 1.5px dashed #d8956d;
  border-radius: 2px;
  box-shadow: 0 0 5px 0 #d8956d inset;

  $buttonWidth: 20px;
  $buttonHeight: 20px;
  $buttonMargin: 2px;

  @mixin halo-button {
    position: absolute;
    background-color: transparent;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    border: 0 none;
    cursor: pointer;
    outline: none;
    padding: 0;
    pointer-events: auto;
    width: $buttonWidth;
    height: $buttonHeight;

    opacity: 0.5;
    transition: opacity 0.3s;
    &:hover {
      opacity: 1;
    }

    &[disabled] {
      cursor: not-allowed;
      opacity: 0.2;
    }
  }

  @mixin spinner {
    position: absolute;
    width: $buttonWidth;
    height: $buttonHeight;
  }

  @mixin n-docked {
    top: -($buttonHeight + $buttonMargin);
    left: 50%;
    margin-left: -(calc($buttonWidth / 2));
  }

  @mixin nw-docked {
    top: -($buttonHeight + $buttonMargin);
    left: -($buttonWidth + $buttonMargin);
  }

  @mixin ne-docked {
    top: -($buttonHeight + $buttonMargin);
    right: -($buttonWidth + $buttonMargin);
  }

  @mixin e-docked {
    top: 50%;
    margin-top: -(calc($buttonHeight / 2));
    right: -($buttonWidth + $buttonMargin);
  }

  @mixin w-docked {
    top: 50%;
    margin-top: -(calc($buttonHeight / 2));
    left: -($buttonWidth + $buttonMargin);
  }

  @mixin s-docked {
    bottom: -($buttonHeight + $buttonMargin);
    left: 50%;
    margin-left: -(calc($buttonWidth / 2));
  }

  @mixin sw-docked {
    bottom: -($buttonHeight + $buttonMargin);
    left: -($buttonWidth + $buttonMargin);
  }

  @mixin se-docked {
    bottom: -($buttonHeight + $buttonMargin);
    right: -($buttonWidth + $buttonMargin);
  }

  &__navigate {
    @include halo-button;
    @include e-docked;

    &--open {
      background-image: url("../images/connections.svg");
    }

    &--closed {
      background-image: url("../images/close-connections.svg");
    }
  }

  &__folow {
    @include halo-button;
    @include w-docked;

    background-image: url("../images/link.svg");
  }

  &__remove {
    @include halo-button;
    @include ne-docked;
    background-image: url("../images/delete.svg");
  }

  &__expand {
    @include halo-button;
    @include s-docked;

    &--open {
      background-image: url("../images/expand-properties.png");
    }

    &--closed {
      background-image: url("../images/collapse-properties.png");
    }
  }

  &__add-to-filter {
    @include halo-button;
    @include se-docked;
    background-image: url("../images/add-to-filter.png");
  }

  &__revert {
    @include halo-button;
    @include n-docked;
    background-image: url("../images/font-awesome/undo-solid.svg");
  }

  &__establish-connection {
    @include halo-button;
    @include sw-docked;
    background-image: url("../images/font-awesome/plug.svg");
  }

  &__establish-connection-spinner {
    @include spinner;
    @include sw-docked;
  }
}