/* ==========================================================================

NAVIGATION
========================================================================== */

/*

Breadcrumb navigation links
========================================================================== */

.breadcrumbs {

@include clearfix;
margin: 0 auto;
max-width: 100%;
padding-left: 1em;
padding-right: 1em;
font-family: $sans-serif;
-webkit-animation: $intro-transition;
animation: $intro-transition;
-webkit-animation-delay: 0.3s;
animation-delay: 0.3s;

@include breakpoint($x-large) {
  max-width: $x-large;
}

ol {
  padding: 0;
  list-style: none;
  font-size: $type-size-6;

  @include breakpoint($large) {
    float: right;
    width: calc(100% - #{$right-sidebar-width-narrow});
  }

  @include breakpoint($x-large) {
    width: calc(100% - #{$right-sidebar-width});
  }
}

li {
  display: inline;
}

.current {
  font-weight: bold;
}

}

/*

Post pagination navigation links
========================================================================== */

.pagination {

@include clearfix();
float: left;
margin-top: 1em;
padding-top: 1em;
width: 100%;

ul {
  margin: 0;
  padding: 0;
  list-style-type: none;
  font-family: $sans-serif;
}

li {
  display: block;
  float: left;
  margin-left: -1px;

  a {
    display: block;
    margin-bottom: 0.25em;
    padding: 0.5em 1em;
    font-family: $sans-serif;
    font-size: 14px;
    font-weight: bold;
    line-height: 1.5;
    text-align: center;
    text-decoration: none;
    color: $muted-text-color;
    border: 1px solid mix(#000, $border-color, 25%);
    border-radius: 0;

    &:hover {
      color: $link-color-hover;
    }

    &.current,
    &.current.disabled {
      color: #fff;
      background: $primary-color;
    }

    &.disabled {
      color: rgba($muted-text-color, 0.5);
      pointer-events: none;
      cursor: not-allowed;
    }
  }

  &:first-child {
    margin-left: 0;

    a {
      border-top-left-radius: $border-radius;
      border-bottom-left-radius: $border-radius;
    }
  }

  &:last-child {
    a {
      border-top-right-radius: $border-radius;
      border-bottom-right-radius: $border-radius;
    }
  }
}

/* next/previous buttons */
&--pager {
  display: block;
  padding: 1em 2em;
  float: left;
  width: 50%;
  font-family: $sans-serif;
  font-size: $type-size-5;
  font-weight: bold;
  text-align: center;
  text-decoration: none;
  color: $muted-text-color;
  border: 1px solid mix(#000, $border-color, 25%);
  border-radius: $border-radius;

  &:hover {
    @include yiq-contrasted($muted-text-color);
  }

  &:first-child {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
  }

  &:last-child {
    margin-left: -1px;
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
  }

  &.disabled {
    color: rgba($muted-text-color, 0.5);
    pointer-events: none;
    cursor: not-allowed;
  }
}

}

.page__content + .pagination, .page__meta + .pagination, .page__share + .pagination, .page__comments + .pagination {

margin-top: 2em;
padding-top: 2em;
border-top: 1px solid $border-color;

}

/*

Priority plus navigation
========================================================================== */

.greedy-nav {

position: relative;
display: -webkit-box;
display: -ms-flexbox;
display: flex;
-webkit-box-align: center;
-ms-flex-align: center;
align-items: center;
min-height: $nav-height;
background: $background-color;

a {
  display: block;
  margin: 0 1rem;
  color: $masthead-link-color;
  text-decoration: none;
  -webkit-transition: none;
  transition: none;

  &:hover {
    color: $masthead-link-color-hover;
  }

  &.site-logo {
    margin-left: 0;
    margin-right: 0.5rem;
  }

  &.site-title {
    margin-left: 0;
  }
}

img{
  -webkit-transition: none;
  transition: none;
}

&__toggle {
  -ms-flex-item-align: center;
  align-self: center;
  height: $nav-toggle-height;
  border: 0;
  outline: none;
  background-color: transparent;
  cursor: pointer;
}

.visible-links {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: end;
  -ms-flex-pack: end;
  justify-content: flex-end;
  -webkit-box-flex: 1;
  -ms-flex: 1;
  flex: 1;
  overflow: hidden;

  li {
    -webkit-box-flex: 0;
    -ms-flex: none;
    flex: none;
  }

  a {
    position: relative;

    &:before {
      content: "";
      position: absolute;
      left: 0;
      bottom: 0;
      height: 4px;
      background: $primary-color;
      width: 100%;
      -webkit-transition: $global-transition;
      transition: $global-transition;
      -webkit-transform: scaleX(0) translate3d(0, 0, 0);
      transform: scaleX(0) translate3d(0, 0, 0); // hide
    }

    &:hover:before {
      -webkit-transform: scaleX(1);
      -ms-transform: scaleX(1);
      transform: scaleX(1); // reveal
    }
  }
}

.hidden-links {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 15px;
  padding: 5px;
  border: 1px solid $border-color;
  border-radius: $border-radius;
  background: $background-color;
  -webkit-box-shadow: 0 2px 4px 0 rgba(#000, 0.16),
    0 2px 10px 0 rgba(#000, 0.12);
  box-shadow: 0 2px 4px 0 rgba(#000, 0.16), 0 2px 10px 0 rgba(#000, 0.12);

  &.hidden {
    display: none;
  }

  a {
    margin: 0;
    padding: 10px 20px;
    font-size: $type-size-5;

    &:hover {
      color: $masthead-link-color-hover;
      background: $navicon-link-color-hover;
    }
  }

  &:before {
    content: "";
    position: absolute;
    top: -11px;
    right: 10px;
    width: 0;
    border-style: solid;
    border-width: 0 10px 10px;
    border-color: $border-color transparent;
    display: block;
    z-index: 0;
  }

  &:after {
    content: "";
    position: absolute;
    top: -10px;
    right: 10px;
    width: 0;
    border-style: solid;
    border-width: 0 10px 10px;
    border-color: $background-color transparent;
    display: block;
    z-index: 1;
  }

  li {
    display: block;
    border-bottom: 1px solid $border-color;

    &:last-child {
      border-bottom: none;
    }
  }
}

}

.no-js {

.greedy-nav {
  .visible-links {
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    overflow: visible;
  }
}

}

/*

Navigation list
========================================================================== */

.nav__list {

margin-bottom: 1.5em;

input[type="checkbox"],
label {
  display: none;
}

@include breakpoint(max-width $large - 1px) {
  label {
    position: relative;
    display: inline-block;
    padding: 0.5em 2.5em 0.5em 1em;
    color: $gray;
    font-size: $type-size-6;
    font-weight: bold;
    border: 1px solid $light-gray;
    border-radius: $border-radius;
    z-index: 20;
    -webkit-transition: 0.2s ease-out;
    transition: 0.2s ease-out;
    cursor: pointer;

    &:before,
    &:after {
      content: "";
      position: absolute;
      right: 1em;
      top: 1.25em;
      width: 0.75em;
      height: 0.125em;
      line-height: 1;
      background-color: $gray;
      -webkit-transition: 0.2s ease-out;
      transition: 0.2s ease-out;
    }

    &:after {
      -webkit-transform: rotate(90deg);
      -ms-transform: rotate(90deg);
      transform: rotate(90deg);
    }

    &:hover {
      color: #fff;
      border-color: $gray;
      background-color: mix(white, #000, 20%);

      &:before,
      &:after {
        background-color: #fff;
      }
    }
  }

  /* selected*/
  input:checked + label {
    color: white;
    background-color: mix(white, #000, 20%);

    &:before,
    &:after {
      background-color: #fff;
    }
  }

  /* on hover show expand*/
  label:hover:after {
    -webkit-transform: rotate(90deg);
    -ms-transform: rotate(90deg);
    transform: rotate(90deg);
  }

  input:checked + label:hover:after {
    -webkit-transform: rotate(0);
    -ms-transform: rotate(0);
    transform: rotate(0);
  }

  ul {
    margin-bottom: 1em;
  }

  a {
    display: block;
    padding: 0.25em 0;

    @include breakpoint($large) {
      padding-top: 0.125em;
      padding-bottom: 0.125em;
    }

    &:hover {
      text-decoration: underline;
    }
  }
}

}

.nav__list .nav__items {

margin: 0;
font-size: 1.25rem;

a {
  color: inherit;
}

.active {
  margin-left: -0.5em;
  padding-left: 0.5em;
  padding-right: 0.5em;
  font-weight: bold;
}

@include breakpoint(max-width $large - 1px) {
  position: relative;
  max-height: 0;
  opacity: 0%;
  overflow: hidden;
  z-index: 10;
  -webkit-transition: 0.3s ease-in-out;
  transition: 0.3s ease-in-out;
  -webkit-transform: translate(0, 10%);
  -ms-transform: translate(0, 10%);
  transform: translate(0, 10%);
}

}

@include breakpoint(max-width $large - 1px) {

.nav__list input:checked ~ .nav__items {
  -webkit-transition: 0.5s ease-in-out;
  transition: 0.5s ease-in-out;
  max-height: 9999px; /* exaggerate max-height to accommodate tall lists*/
  overflow: visible;
  opacity: 1;
  margin-top: 1em;
  -webkit-transform: translate(0, 0);
  -ms-transform: translate(0, 0);
  transform: translate(0, 0);
}

}

.nav__title {

margin: 0;
padding: 0.5rem 0.75rem;
font-family: $sans-serif-narrow;
font-size: $type-size-5;
font-weight: bold;

}

.nav__sub-title {

display: block;
margin: 0.5rem 0;
padding: 0.25rem 0;
font-family: $sans-serif-narrow;
font-size: $type-size-6;
font-weight: bold;
text-transform: uppercase;
border-bottom: 1px solid $border-color;

}

/*

Table of contents navigation
========================================================================== */

.toc {

font-family: $sans-serif-narrow;
color: $gray;
background-color: $background-color;
border: 1px solid $border-color;
border-radius: $border-radius;
-webkit-box-shadow: $box-shadow;
box-shadow: $box-shadow;

.nav__title {
  color: #fff;
  font-size: $type-size-6;
  background: $primary-color;
  border-top-left-radius: $border-radius;
  border-top-right-radius: $border-radius;
}

// Scrollspy marks toc items as .active when they are in focus
.active a {
  @include yiq-contrasted($active-color);
}

}

.toc__menu {

margin: 0;
padding: 0;
width: 100%;
list-style: none;
font-size: $type-size-6;

@include breakpoint($large) {
  font-size: $type-size-7;
}

a {
  display: block;
  padding: 0.25rem 0.75rem;
  color: $muted-text-color;
  font-weight: bold;
  line-height: 1.5;
  border-bottom: 1px solid $border-color;

  &:hover {
    color: $text-color;
  }
}

li ul > li a {
  padding-left: 1.25rem;
  font-weight: normal;
}

li ul li ul > li a {
  padding-left: 1.75rem;
}

li ul li ul li ul > li a {
  padding-left: 2.25rem;
}

li ul li ul li ul li ul > li a {
  padding-left: 2.75rem;
}

li ul li ul li ul li ul li ul > li a {
  padding-left: 3.25rem
}

}