.chart-annotation {
  position: absolute;
  height: 100%;

  &.is-staggered {
    height: calc(100% + 15px);
  }

  .indicator {
    color: $grey;
    display: block;
    width: 20px;
    height: 20px;
    padding: 0;
    border: none;
    border-radius: 100%;
    background: transparent;
    margin-left: -10px;
    margin-top: -10px;
    cursor: pointer;
    pointer-events: auto;

    &.is-active {
      box-shadow: inset 0 0 0 2px $blue;
    }

    .icon {
      width: 100%;
      height: 100%;
    }
  }

  @each $name, $pair in $colors {
    $color: nth($pair, 1);

    &.is-#{$name} .indicator {
      color: $color;

      &:hover,
      &.is-hovered {
        color: darken($color, 2.5%);
      }
    }
  }

  .line {
    position: absolute;
    left: 0;
    top: 8px;
    width: 1px;
    height: calc(100% - 8px);
    background: $grey;
    z-index: -1;
  }
}