hugo-theme-zzo/assets/sass/layout/_navigation.scss

.navbar {
  margin: auto;
  width: inherit;
  max-width: inherit;
  height: $grid_navbar_height;
  z-index: z('navbar');
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  
  @include transition(all, 0.2s, ease);  
  @include flexbox();
  @include justify-content(space-between);
  @include themify($themes) {
    border-bottom: 1px solid themed('navbar-border-bottom-color');
    background-color: themed('navbar-background-color');
  }

  &--hide {
    top: -$grid_navbar_height;
  }

  &--show {
    top: 0;
  }

  &__slide-down {
    svg {
      margin: auto;
      display: block;
    }

    @include themify($themes) {
      background-color: themed('navbar-background-color');
      @include on-event {
        background-color: themed('navbar-menu-hover-background-color');
      }
    }
    
    @media only screen and (min-width: 769px) {
      @for $i from 1 through 8 {
        &:nth-child(#{$i}) {
          @include animation('slide-in-down .25s #{$i * .1}s 1 ease both');
        }
      }
    }   
  }
  
  &__brand {
    height: $grid_navbar_height;

    @include flexbox();
    @include align-items(center);
    @include flex-shrink(0);  
  }

  &__burger {
    display: none;
    position: relative;

    @include animation('slide-in-down .5s .0s 1 ease both');
    @media only screen and (max-width: 769px) {
      cursor: pointer;
      margin-left: auto;
      position: relative;
      height: $grid_navbar_height;    
      width: 35px;

      @include flexbox();
      @include align-items(center);
      @include justify-content(flex-end);

      span {
        @include themify($themes) {
          background-color: themed('burger-menu-color');
        }
        
        border-radius: 1rem;
        display: block;
        height: 2px;
        left: calc(50% - 8px);
        position: absolute;
        transform-origin: center;
        transition-duration: 86ms;
        transition-property: background-color, opacity, transform;
        transition-timing-function: ease-out;
        width: 16px;
        &:nth-child(1) {
          top: calc(50% - 6px);
        }      
        &:nth-child(2) {
          top: calc(50% - 1px);
        } 
        &:nth-child(3) {
          top: calc(50% + 4px);
        }      
      }      
          
      &:hover {
        span {
          @include themify($themes) {
            background-color: themed('link-hover');
          }
        }        
      }

      &.is-active {
        display: block;
        span {
          &:nth-child(1) {
            transform: translateY(5px) rotate(45deg);
          }        
          &:nth-child(2) {
            opacity: 0;
          }        
          &:nth-child(3) {
            transform: translateY(-5px) rotate(-45deg);
          }        
        }      
      }
    }
  }

  &__logo {
    width: 100%;
    height: 100%;

    &-link {
      width: 40px;
      height: 40px;
      padding: 0.1rem;
      margin: auto 0.25rem;
      @include flex-shrink(0);
      flex-shrink: 0;
    }
  }

  &__long {
    &-link {
      width: 100%;
      height: 100%;
      padding: 0.6rem 0.2rem;
      margin: auto 0.25rem;
      @include flex-shrink(0);
      flex-shrink: 0;
    }
  }

  &__title {
    height: $grid_navbar_height;
    font-size: 1.5rem;

    @include flexbox();
    @include align-items(center);        
    
    &-link {
      @include themify($themes) {
        color: themed("navbar-title-color");
        @include on-event {
            text-decoration: none;
            color: themed("navbar-title-color");
        }
      }
    }
  }

  &__menu {
    @include flex-grow(1);
    @include flexbox();
    @include align-items(center);
    @include justify-content(flex-end);
    height: $grid_navbar_height;

    @media only screen and (max-width: 769px) {
      display: none;
    }    

    &-item {
      height: $grid_navbar_height;      
      padding: 0.5rem;
      font-size: 1rem;
      font-family: $title-font;
      font-weight: 700;

      @include flexbox();
      @include align-items(center);
      @include justify-content(center);
      @include no-select;
      @include themify($themes) {
        color: themed('navbar-title-color');
        border-top: 1px solid transparent;
        border-bottom: 1px solid themed('navbar-border-bottom-color');
        @include on-event {
          color: themed('navbar-title-hover-color');
          background-color: themed('navbar-menu-hover-background-color');
          text-decoration: none;
          border-bottom: 1px solid themed('navbar-border-bottom-color');
          @media only screen and (max-width: 769px) {
            border-bottom: none;
          }
        }
        &.active {
          color: themed('navbar-title-active-color') !important;
        }
      }

      @media only screen and (max-width: 769px) {
        @include justify-content(flex-start);
        width: 100%;
        padding: 0 0.75rem;
      }
    }

    &.is-active {
      position: absolute;
      top: $grid_navbar_height;
      left: 0;
      width: 100%;
      height: auto;
      overflow: hidden;

      @include flexbox();
      @include flex-direction(column);
      @include align-items(flex-start);
      @include themify($themes) {        
        border-top: 1px solid themed('navbar-border-bottom-color');
        background-color: themed('navbar-mobile-background-color');
        border-bottom: 1px solid themed('navbar-border-bottom-color');
      }
    }
  }

  &__dropdown {
    display: inline-block;
    height: $grid_navbar_height;
    @media only screen and (max-width: 769px) {
      width: 100%;
      height: auto;
    }

    &--content {
      position: absolute;
      display: none;
      width: inherit;      
      z-index: z("dropdown");
      border-bottom-left-radius: 0.15rem;
      border-bottom-right-radius: 0.15rem;

      @include box-shadow(0, 1px, 3px, 0, rgba(0, 0, 0, 0.4));
      @include themify($themes) {
        border-top: 4px solid themed("dropdown-border-top-color");
        background-color: themed("dropdown-content-background-color");
      }

      @media only screen and (max-width: 769px) {
        position: relative;
        display: block;
        box-shadow: none;
        @include themify($themes) {
          border-top: none;
          background-color: themed("navbar-mobile-background-color");
        }
      }
    }

    &--item {
      padding: 0.25rem 0.75rem;
      height: auto;
      margin: auto;
      min-width: 40px;
      max-width: 150px;
      text-decoration: none;
      display: block;
      font-size: 1rem;
      font-weight: 700;

      @include truncate(150px);
      @include themify($themes) {
        color: themed("dropdown-item-color");
        @include on-event {
          color: themed("navbar-dropdown-item-hover-color");
          background-color: themed("navbar-menu-hover-background-color");
          text-decoration: none;          

          &:last-child {
            border-bottom-left-radius: 0.15rem;
            border-bottom-right-radius: 0.15rem;
          }
        }
      }

      @media only screen and (max-width: 769px) {
        padding-left: 2.5rem;
        min-width: 100%;
        max-width: 100%;
      }
    }
  }
}

.navbar__dropdown:hover .navbar__dropdown--content {
  display: block;
}

.theme {
  @include flexbox();
  @include align-items(center);
  @include justify-content(flex-end);
  @include animation('slide-in-down .5s .0s 1 ease both');  

  @media only screen and (max-width: 769px) {
    display: none;
  }

  .dropdown {    
    @include flexbox();
    @include align-items(center);
    @include justify-content(center);    
    @include themify($themes) {
      color: themed('burger-menu-color');  
      @include on-event {
        color: themed('navbar-title-hover-color');
        background-color: themed('navbar-menu-hover-background-color');
      }      
    }

    &-trigger {
      padding: 0.5rem;
      cursor: pointer;
      border: none;
      outline: none;
      width: $grid_navbar_height;
      height: $grid_navbar_height - 2px;
      color: inherit;
      background-color: inherit;
    }

    &-content {
      position: absolute;
      top: 100%;
      right: 0;
      display: none;
      height: auto;
      z-index: z("dropdown");      
      border-bottom-left-radius: 0.25rem;
      border-bottom-right-radius: 0.25rem;

      a {
        font-size: 0.9rem;
      }

      @include box-shadow(0, 1px, 3px, 0, rgba(0, 0, 0, 0.4));
      @include themify($themes) {
        border-top: 4px solid themed("dropdown-border-top-color");
        background-color: themed("dropdown-content-background-color");
      }

      .is-active {
        @include themify($themes) {
          background-color: themed("dropdown-item-active-background-color");
        }
      }
    }

    &-item {
      padding: 0.25rem 0.75rem;
      height: 100%;
      text-decoration: none;
      display: block;
      font-size: 1rem;

      @include no-select;
      @include themify($themes) {
        color: themed("dropdown-item-color");
        @include on-event {
          color: themed("dropdown-item-hover-color");
          background-color: themed("dropdown-item-hover-background-color");
          text-decoration: none;

          &:last-child {
            border-bottom-left-radius: 0.25rem;
            border-bottom-right-radius: 0.25rem;
          }
        }
      }
    }
  }

  .dropdown:hover .dropdown-content {
    display: block;
  }
}

.theme-mobile {
  display: none;
  outline: none;
  position: absolute;
  top: 0;
  right: 35px * 2;
  width: 35px;
  height: $grid_navbar_height;
  cursor: pointer;
  z-index: z('modal');

  @include animation('slide-in-down .5s .4s 1 ease both');
  @include themify($themes) {
    color: themed('burger-menu-color');  
    @include on-event {
      color: themed('link-hover');
      background-color: inherit;
      border-bottom: none;
    }      
  }

  @media only screen and (max-width: 769px) {
    @include flexbox();
    @include align-items(center);
    @include justify-content(flex-end);
  }

  .dropdown {
    border-bottom: 2px solid transparent;
    @include themify($themes) {
      color: themed('burger-menu-color');  
      @include on-event {
        color: themed('link-hover');
        background-color: themed('navbar-menu-hover-background-color');
        border-bottom: 2px solid themed('navbar-border-bottom-color');
      }      
    }

    &-trigger {
      padding: 0.25rem;
      cursor: pointer;
      border: none;      
      outline: none;
      width: 35px;
      height: $grid_navbar_height !important;
      color: inherit;
      background-color: inherit;
    }

    &-content {
      position: absolute;
      top: 100%;
      right: 0;
      display: none;
      height: auto;
      z-index: z("dropdown");
      border-top-left-radius: 0.15rem;
      border-top-right-radius: 0.15rem;

      a {
        font-size: 0.9rem;
      }

      @include box-shadow(0, 1px, 3px, 0, rgba(0, 0, 0, 0.4));
      @include themify($themes) {
        border-top: 4px solid themed("dropdown-border-top-color");
        background-color: themed("dropdown-content-background-color");
      }

      .is-active {
        @include themify($themes) {
          background-color: themed("dropdown-item-active-background-color");
        }
      }
    }

    &-item {
      padding: 0.25rem 0.75rem;
      height: 100%;
      text-decoration: none;
      display: block;
      font-size: 1rem;

      @include no-select;
      @include themify($themes) {
        color: themed("dropdown-item-color");
        @include on-event {
          color: themed("dropdown-item-hover-color");
          background-color: themed("dropdown-item-hover-background-color");
          text-decoration: none;

          &:first-child {
            border-top-left-radius: 0.15rem;
            border-top-right-radius: 0.15rem;
          }
        }
      }
    }
  }

  .dropdown:hover .dropdown-content {
    display: block;
  }
}