openproject/app/assets/stylesheets/layout/_main_menu.sass

//-- copyright
// OpenProject is a project management system.
// Copyright (C) 2012-2017 the OpenProject Foundation (OPF)
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License version 3.
//
// OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
// Copyright (C) 2006-2017 Jean-Philippe Lang
// Copyright (C) 2010-2013 the ChiliProject Team
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
//
// See doc/COPYRIGHT.rdoc for more details.
//++

$toggler-width: 40px

#main-menu
  bottom: auto
  width: $main-menu-width
  float: left
  left: 0
  background-color: $main-menu-bg-color
  @include default-transition

  %absolute-layout-mode &
    position: relative
    height:   100%
    #menu-sidebar
      height:   100%
      +allow-vertical-scrolling
      -ms-overflow-style: -ms-autohiding-scrollbar
  ul
    margin: 0
    padding: 0

    &.menu_root
      // -------------- ALL menu items --------------------------------
      li
        float: none
        list-style-type: none
        margin: 0
        padding: 0
        white-space: nowrap
        position: relative
        min-height: 23px

        &.ng-leave
          @include animation(0.5s fade-out)

        > a,
        .main-item-wrapper > a
          @include default-transition
          cursor: pointer
          text-decoration: none

          &:hover, &.selected, &.selected + a
            @include varprop(background, main-menu-bg-selected-background)
            @include varprop(color, main-menu-selected-font-color)
            font-weight: bold


      // -------------- MAIN menu items --------------------------------
      > li
        .main-item-wrapper
          display: flex

          @include default-transition

          &:hover
            @include varprop(background, main-menu-bg-hover-background)

            @if $main-menu-enable-toggle-highlighting != true
              // simultaneously hover all menu item anchor tags
              > a
                @include varprop(color, main-menu-selected-font-color)

          > a:before
            padding-right: 25px

          a:not(.toggler)
            @extend .small-12

          a:not(:only-child):first-of-type
            @extend .small-10


        .open .toggler
          .icon-toggler:before
            @extend .icon-arrow-up1:before

        // padding for placeholder for highlighted left-item-border
        a
          // work around due to dom manipulation on document: ready:
          // this isn't scoped to .main-item-wrapper to avoid flickering
          padding-left: 7px
        a.toggler
          // explicitly reset to zero to avoid selector precedence problems
          padding-left: 0

      &:first-of-type
        border-top: 1px solid $main-menu-item-border-color


    // -------------- CHILD menu items --------------------------------
    ul.menu-children
      display: none
      margin-top: 10px
      margin-bottom: 10px
      padding: 0
      &.unattached
        border-top: 1px solid #ddd
      li
        @include default-transition

        &:hover
          @include varprop(background, main-menu-child-bg-hover-color)

          @if $main-menu-enable-toggle-highlighting != true
            // simultaneously hover all menu item anchor tags
            > a
              color: $main-menu-child-selected-font-color

        a
          padding-left: 54px
          font-size: $main-menu-child-font-size
          line-height: $main-menu-child-item-height
          height: $main-menu-child-item-height

          &:hover
            text-decoration: none

  a
    text-decoration: none
    line-height: $main-menu-item-height
    display: block
    position: relative
    height: $main-menu-item-height
    color: $main-menu-font-color
    font-family: $body-font-family
    font-weight: normal
    font-size: $main-menu-font-size
    font-style: normal

  .toggler
    width: $toggler-width
    height: $main-menu-item-height
    text-align: center
  .sub-menu-heading
    float: left

  .toggle-follow
    position: absolute
    width: 140px
  .icon-time
    background: none
    padding: 0

.hidden-navigation
  #main-menu
    width: $main-menu-folded-width
    .ellipsis
      text-overflow: clip
      -o-text-overflow: clip
      -ms-text-overflow: clip
    .toggler
      display: none

  #menu-sidebar,
  #sidebar,
  .menu-children
    display: none

#sidebar
  margin: 30px 0 0 0
  padding: 0 17px 0 17px
  width: auto
  color: $main-menu-sidebar-font-color
  font-family: $body-font-family
  font-style: normal
  overflow: hidden
  text-overflow: ellipsis
  overflow-wrap: initial

  h3
    display: block
    border: none
    //border-top: 1px solid $main-menu-sidebar-h3-border-top-color
    color: $main-menu-sidebar-h3-color
    font-weight: normal
    font-size: $main-menu-sidebar-h3-font-size
    margin: 30px 0 8px 0
    padding: 10px 0 0 0

    text-transform: uppercase

  > h3:first-child
    margin-top: 0

  a, a:link
    color: $main-menu-sidebar-link-color
    display: inline
    position: static
    text-decoration: underline

  a:hover
    text-decoration: underline

  label
    color: $main-menu-sidebar-font-color
    max-width: 80%
    vertical-align: top

  ul
    border: none
    overflow-x: hidden
    li
      border: none
    li a
      padding: 0