// Base class
//
// Kickstart any navigation component with a set of style resets. Works with
// `<nav>`s, `<ul>`s or `<ol>`s.

.nav {
    // scss-docs-start nav-css-vars
    --#{$prefix}nav-link-padding-x: #{$nav-link-padding-x};
    --#{$prefix}nav-link-padding-y: #{$nav-link-padding-y};
    @include rfs($nav-link-font-size, --#{$prefix}nav-link-font-size);
    --#{$prefix}nav-link-font-weight: #{$nav-link-font-weight};
    --#{$prefix}nav-link-color: #{$nav-link-color};
    --#{$prefix}nav-link-hover-color: #{$nav-link-hover-color};
    --#{$prefix}nav-link-disabled-color: #{$nav-link-disabled-color};
    // scss-docs-end nav-css-vars
  
    display: flex;
    flex-wrap: wrap;
    padding-left: 0;
    margin-bottom: 0;
    list-style: none;
  }
  
  .nav-link {
    display: block;
    padding: var(--#{$prefix}nav-link-padding-y) var(--#{$prefix}nav-link-padding-x);
    @include font-size(var(--#{$prefix}nav-link-font-size));
    font-weight: var(--#{$prefix}nav-link-font-weight);
    color: var(--#{$prefix}nav-link-color);
    text-decoration: if($link-decoration == none, null, none);
    background: none;
    border: 0;
    @include transition($nav-link-transition);
  
    &:hover,
    &:focus {
      color: var(--#{$prefix}nav-link-hover-color);
      text-decoration: if($link-hover-decoration == underline, none, null);
    }
  
    &:focus-visible {
      outline: 0;
      box-shadow: $nav-link-focus-box-shadow;
    }
  
    // Disabled state lightens text
    &.disabled,
    &:disabled {
      color: var(--#{$prefix}nav-link-disabled-color);
      pointer-events: none;
      cursor: default;
    }
  }
  
  //
  // Tabs
  //
  
  .nav-tabs {
    // scss-docs-start nav-tabs-css-vars
    --#{$prefix}nav-tabs-border-width: #{$nav-tabs-border-width};
    --#{$prefix}nav-tabs-border-color: #{$nav-tabs-border-color};
    --#{$prefix}nav-tabs-border-radius: #{$nav-tabs-border-radius};
    --#{$prefix}nav-tabs-link-hover-border-color: #{$nav-tabs-link-hover-border-color};
    --#{$prefix}nav-tabs-link-active-color: #{$nav-tabs-link-active-color};
    --#{$prefix}nav-tabs-link-active-bg: #{$nav-tabs-link-active-bg};
    --#{$prefix}nav-tabs-link-active-border-color: #{$nav-tabs-link-active-border-color};
    // scss-docs-end nav-tabs-css-vars
  
    border-bottom: var(--#{$prefix}nav-tabs-border-width) solid var(--#{$prefix}nav-tabs-border-color);
  
    .nav-link {
      margin-bottom: calc(-1 * var(--#{$prefix}nav-tabs-border-width)); // stylelint-disable-line function-disallowed-list
      border: var(--#{$prefix}nav-tabs-border-width) solid transparent;
      @include border-top-radius(var(--#{$prefix}nav-tabs-border-radius));
  
      &:hover,
      &:focus {
        // Prevents active .nav-link tab overlapping focus outline of previous/next .nav-link
        isolation: isolate;
        border-color: var(--#{$prefix}nav-tabs-link-hover-border-color);
      }
    }
  
    .nav-link.active,
    .nav-item.show .nav-link {
      color: var(--#{$prefix}nav-tabs-link-active-color);
      background-color: var(--#{$prefix}nav-tabs-link-active-bg);
      border-color: var(--#{$prefix}nav-tabs-link-active-border-color);
    }
  
    .dropdown-menu {
      // Make dropdown border overlap tab border
      margin-top: calc(-1 * var(--#{$prefix}nav-tabs-border-width)); // stylelint-disable-line function-disallowed-list
      // Remove the top rounded corners here since there is a hard edge above the menu
      @include border-top-radius(0);
    }
  }
  
  
  //
  // Pills
  //
  
  .nav-pills {
    // scss-docs-start nav-pills-css-vars
    --#{$prefix}nav-pills-border-radius: #{$nav-pills-border-radius};
    --#{$prefix}nav-pills-link-active-color: #{$nav-pills-link-active-color};
    --#{$prefix}nav-pills-link-active-bg: #{$nav-pills-link-active-bg};
    // scss-docs-end nav-pills-css-vars
  
    .nav-link {
      @include border-radius(var(--#{$prefix}nav-pills-border-radius));
    }
  
    .nav-link.active,
    .show > .nav-link {
      color: var(--#{$prefix}nav-pills-link-active-color);
      @include gradient-bg(var(--#{$prefix}nav-pills-link-active-bg));
    }
  }
  
  
  //
  // Underline
  //
  
  .nav-underline {
    // scss-docs-start nav-underline-css-vars
    --#{$prefix}nav-underline-gap: #{$nav-underline-gap};
    --#{$prefix}nav-underline-border-width: #{$nav-underline-border-width};
    --#{$prefix}nav-underline-link-active-color: #{$nav-underline-link-active-color};
    // scss-docs-end nav-underline-css-vars
  
    gap: var(--#{$prefix}nav-underline-gap);
  
    .nav-link {
      padding-right: 0;
      padding-left: 0;
      border-bottom: var(--#{$prefix}nav-underline-border-width) solid transparent;
  
      &:hover,
      &:focus {
        border-bottom-color: currentcolor;
      }
    }
  
    .nav-link.active,
    .show > .nav-link {
      font-weight: $font-weight-bold;
      color: var(--#{$prefix}nav-underline-link-active-color);
      border-bottom-color: currentcolor;
    }
  }
  
  
  //
  // Justified variants
  //
  
  .nav-fill {
    > .nav-link,
    .nav-item {
      flex: 1 1 auto;
      text-align: center;
    }
  }
  
  .nav-justified {
    > .nav-link,
    .nav-item {
      flex-basis: 0;
      flex-grow: 1;
      text-align: center;
    }
  }
  
  .nav-fill,
  .nav-justified {
    .nav-item .nav-link {
      width: 100%; // Make sure button will grow
    }
  }
  
  
  // Tabbable tabs
  //
  // Hide tabbable panes to start, show them when `.active`
  
  .tab-content {
    > .tab-pane {
      display: none;
    }
    > .active {
      display: block;
    }
  }