// Foundation for Sites by ZURB
// foundation.zurb.com
// Licensed under MIT Open Source

////
/// @group drilldown
////

/// Transition property to use for animating menus.
/// @type Transition
$drilldown-transition: transform 0.15s linear !default;

/// Adds arrows to drilldown items with submenus, as well as the back button.
/// @type Boolean
$drilldown-arrows: true;

@mixin foundation-drilldown-menu {
  // Applied to the Menu container
  .is-drilldown {
    position: relative;
    overflow: hidden;
  }

  // Applied to nested <ul>s
  .is-drilldown-sub {
    position: absolute;
    top: 0;
    left: 100%;
    z-index: -1;
    height: 100%;
    width: 100%;
    background: $white;
    transition: $drilldown-transition;

    &.is-active {
      z-index: 1;
      display: block;
      transform: translateX(-100%);
    }

    &.is-closing {
      transform: translateX(100%);
    }
  }

  @if $drilldown-arrows {
    .is-drilldown-submenu-parent > a {
      position: relative;

      &::after {
        @include css-triangle(6px, $primary-color, right);
        position: absolute;
        top: 50%;
        margin-top: -6px;
        right: 1rem;
      }
    }

    .js-drilldown-back::before {
      @include css-triangle(6px, $primary-color, left);
      float: left;
      margin-right: 0.75rem; // Creates space between the arrow and the text
      margin-left: 0.6rem; // Lines the tip of the arrow with the items below
      margin-top: 14px; // Aligns the arrow with the text
    }
  }
}
