//
// Navbars
// --------------------------------------------------


// Wrapper and base class
//
// Provide a static navbar from which we expand to create full-width, fixed, and
// other navbar variations.

.navbar {
  position: relative;
  min-height: $navbar-height; // Ensure a navbar always shows (e.g., without a .navbar-brand in collapsed mode)
  margin-bottom: $navbar-margin-bottom;
  border: 1px solid transparent;

  // Prevent floats from breaking the navbar
  @include clearfix();
}


// Navbar heading
//
// Groups `.navbar-brand` and `.navbar-toggle` into a single component for easy
// styling of responsive aspects.

.navbar-header {
  @include clearfix();
}


// Both navbar header and collapse
//
// When a container is present, change the behavior of the header and collapse.

.container,
.container-fluid {
  > .navbar-header,
  > .navbar-collapse {
    margin-right: -$navbar-padding-horizontal;
    margin-left:  -$navbar-padding-horizontal;
  }
}


//
// Navbar alignment options
//
// Display the navbar across the entirety of the page or fixed it to the top or
// bottom of the page.

// Static top (unfixed, but 100% wide) navbar
.navbar-static-top {
  z-index: $zindex-navbar;
  border-width: 0 0 1px;
}

// Fix the top/bottom navbars when screen real estate supports it
.navbar-fixed-top,
.navbar-fixed-bottom {
  position: relative;
  right: 0;
  left: 0;
  z-index: $zindex-navbar-fixed;
  @include translate3d(0, 0, 0);
}
.navbar-fixed-top {
  top: 0;
  border-width: 0 0 1px;
}
.navbar-fixed-bottom {
  bottom: 0;
  margin-bottom: 0; // override .navbar defaults
  border-width: 1px 0 0;
}


// Brand/project name

.navbar-brand {
  float: left;
  padding: $navbar-padding-vertical $navbar-padding-horizontal;
  font-size: $font-size-large;
  line-height: $line-height-computed;
  height: $navbar-height;

  &:hover,
  &:focus {
    text-decoration: none;
  }
}


// Navbar nav links
//
// Builds on top of the `.nav` components with its own modifier class to make
// the nav the full height of the horizontal nav (above 768px).

.navbar-nav {
  margin: ($navbar-padding-vertical / 2) (-$navbar-padding-horizontal);

  > li > a {
    padding-top:    10px;
    padding-bottom: 10px;
    line-height: $line-height-computed;
  }
}


// Navbar form
//
// Extension of the `.form-inline` with some extra flavor for optimum display in
// our navbars.

.navbar-form {
  margin-left: -$navbar-padding-horizontal;
  margin-right: -$navbar-padding-horizontal;
  padding: 10px $navbar-padding-horizontal;
  border-top: 1px solid transparent;
  border-bottom: 1px solid transparent;
  $shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 1px 0 rgba(255,255,255,.1);
  @include box-shadow($shadow);

  // Mixin behavior for optimum display
  @extend .form-inline;

  // Vertically center in expanded, horizontal navbar
  @include navbar-vertical-align($input-height-base);
}


// Dropdown menus

// Menu position and menu carets
.navbar-nav > li > .dropdown-menu {
  margin-top: 0;
  @include border-top-radius(0);
}
// Menu position and menu caret support for dropups via extra dropup class
.navbar-fixed-bottom .navbar-nav > li > .dropdown-menu {
  @include border-bottom-radius(0);
}


// Buttons in navbars
//
// Vertically center a button within a navbar (when *not* in a form).

.navbar-btn {
  @include navbar-vertical-align($input-height-base);
}


// Text in navbars
//
// Add a class to make any element properly align itself vertically within the navbars.

.navbar-text {
  @include navbar-vertical-align($line-height-computed);
}

// Alternate navbars
// --------------------------------------------------

// Default navbar
.navbar-default {
  background-color: $navbar-default-bg;
  border-color: $navbar-default-border;

  .navbar-brand {
    color: $navbar-default-brand-color;
    &:hover,
    &:focus {
      color: $navbar-default-brand-hover-color;
      background-color: $navbar-default-brand-hover-bg;
    }
  }

  .navbar-text {
    color: $navbar-default-color;
  }

  .navbar-nav {
    > li > a {
      color: $navbar-default-link-color;

      &:hover,
      &:focus {
        color: $navbar-default-link-hover-color;
        background-color: $navbar-default-link-hover-bg;
      }
    }
    > .active > a {
      &,
      &:hover,
      &:focus {
        color: $navbar-default-link-active-color;
        background-color: $navbar-default-link-active-bg;
      }
    }
    > .disabled > a {
      &,
      &:hover,
      &:focus {
        color: $navbar-default-link-disabled-color;
        background-color: $navbar-default-link-disabled-bg;
      }
    }
  }

  .navbar-toggle {
    border-color: $navbar-default-toggle-border-color;
    &:hover,
    &:focus {
      background-color: $navbar-default-toggle-hover-bg;
    }
    .icon-bar {
      background-color: $navbar-default-toggle-icon-bar-bg;
    }
  }

  .navbar-form {
    border-color: $navbar-default-border;
  }

  // Dropdown menu items
  .navbar-nav {
    // Remove background color from open dropdown
    > .open > a {
      &,
      &:hover,
      &:focus {
        background-color: $navbar-default-link-active-bg;
        color: $navbar-default-link-active-color;
      }
    }
  }

  // Links in navbars
  //
  // Add a class to ensure links outside the navbar nav are colored correctly.

  .navbar-link {
    color: $navbar-default-link-color;
    &:hover {
      color: $navbar-default-link-hover-color;
    }
  }

  .btn-link {
    color: $navbar-default-link-color;
    &:hover,
    &:focus {
      color: $navbar-default-link-hover-color;
    }
    &[disabled],
    fieldset[disabled] & {
      &:hover,
      &:focus {
        color: $navbar-default-link-disabled-color;
      }
    }
  }
}

// Inverse navbar

.navbar-inverse {
  background-color: $navbar-inverse-bg;
  border-color: $navbar-inverse-border;

  .navbar-brand {
    color: $navbar-inverse-brand-color;
    &:hover,
    &:focus {
      color: $navbar-inverse-brand-hover-color;
      background-color: $navbar-inverse-brand-hover-bg;
    }
  }

  .navbar-text {
    color: $navbar-inverse-color;
  }

  .navbar-nav {
    > li > a {
      color: $navbar-inverse-link-color;

      &:hover,
      &:focus {
        color: $navbar-inverse-link-hover-color;
        background-color: $navbar-inverse-link-hover-bg;
      }
    }
    > .active > a {
      &,
      &:hover,
      &:focus {
        color: $navbar-inverse-link-active-color;
        background-color: $navbar-inverse-link-active-bg;
      }
    }
    > .disabled > a {
      &,
      &:hover,
      &:focus {
        color: $navbar-inverse-link-disabled-color;
        background-color: $navbar-inverse-link-disabled-bg;
      }
    }
  }

  // Darken the responsive nav toggle
  .navbar-toggle {
    border-color: $navbar-inverse-toggle-border-color;
    &:hover,
    &:focus {
      background-color: $navbar-inverse-toggle-hover-bg;
    }
    .icon-bar {
      background-color: $navbar-inverse-toggle-icon-bar-bg;
    }
  }

  .navbar-form {
    border-color: darken($navbar-inverse-bg, 7%);
  }

  // Dropdowns
  .navbar-nav {
    > .open > a {
      &,
      &:hover,
      &:focus {
        background-color: $navbar-inverse-link-active-bg;
        color: $navbar-inverse-link-active-color;
      }
    }
  }

  .navbar-link {
    color: $navbar-inverse-link-color;
    &:hover {
      color: $navbar-inverse-link-hover-color;
    }
  }

  .btn-link {
    color: $navbar-inverse-link-color;
    &:hover,
    &:focus {
      color: $navbar-inverse-link-hover-color;
    }
    &[disabled],
    fieldset[disabled] & {
      &:hover,
      &:focus {
        color: $navbar-inverse-link-disabled-color;
      }
    }
  }
}