_header.scss

// Open edX: Studio header
// =======================
//
// Note: these styles replicate the Studio styles directly
// rather than benefiting from any Bootstrap classes. Ideally
// the header should be reimagined using Bootstrap and then
// these styles will no longer be necessary.

// studio - elements - global header
// ====================

.wrapper-header {
  @extend %ui-depth3;

  position: relative;
  width: 100%;
  box-shadow: 0 1px 2px 0 $shadow-l1;
  margin: 0;
  padding: 0 $baseline;
  background: $white;

  header.primary {
    @include clearfix();

    max-width: $studio-max-width;
    width: flex-grid(12);
    margin: 0 auto;
  }

  // ====================

  // basic layout
  .wrapper-l,
  .wrapper-r {
    background: $white;
  }

  .wrapper-l {
    float: left;
    width: flex-grid(7, 12);
  }

  .wrapper-r {
    float: right;
    width: flex-grid(4, 12);
    text-align: right;
  }

  .branding,
  .info-course,
  .nav-course,
  .nav-account,
  .nav-pitch {
    display: inline-block;
    vertical-align: middle;
    margin-bottom: 0;
  }

  .user-language-selector {
    width: 120px;
    display: inline-block;
    margin: 0 10px 0 5px;
    vertical-align: sub;

    .language-selector {
      width: 120px;
    }
  }

  .nav-account {
    width: auto;
  }

  // basic layout - nav items
  nav {
    > ol > .nav-item {
      @extend %t-action3;
      @extend %t-strong;

      display: inline-block;
      vertical-align: middle;

      &:last-child {
        margin-right: 0;
      }
    }

    .nav-item a {
      color: color("gray");

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

  // basic layout - dropdowns
  .nav-dd {
    .title {
      padding: $baseline/2 $baseline/2;
      font-size: $font-size-lg;

      .fa-caret-down {
        opacity: 0.25;
      }

      &:hover {
        .fa-caret-down {
          opacity: 1;
        }
      }

      .nav-sub .nav-item {
        .icon {
          display: inline-block;
          vertical-align: middle;
          margin-right: ($baseline/4);
        }
      }
    }
  }

  // ====================

  // specific elements - branding
  .branding {
    padding: ($baseline*0.75) 0;

    a {
      display: block;

      img {
        max-height: ($baseline*2);
        display: block;
      }
    }
  }

  // ====================

  // specific elements - course name/info
  .info-course {
    margin-right: flex-gutter();
    border-right: 1px solid $gray-300;
    padding: ($baseline*0.75) flex-gutter() ($baseline*0.75) 0;

    .course-org,
    .course-number {
      font-size: $font-size-sm;
      line-height: 12px;
      display: inline-block;
      vertical-align: middle;
      max-width: 45%;
      overflow: hidden;
      white-space: nowrap;
      text-overflow: ellipsis;
      opacity: 1;
      color: theme-color("primary");
    }

    .course-org {
      margin-right: $baseline/4;
    }

    .course-title {
      @extend %t-action2;
      @extend %t-strong;

      display: block;
      width: 100%;
      overflow: hidden;
      white-space: nowrap;
      text-overflow: ellipsis;
    }

    // entire link
    .course-link {
      display: block;
      color: theme-color("primary");

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

  // ====================

  // specific elements - course nav
  .nav-course {
    padding: ($baseline*0.75) 0;
  }

  // ====================

  // specific elements - account-based nav
  .nav-account {
    position: relative;
    padding: ($baseline*0.75) 0;

    .nav-sub {
      text-align: left;
    }

    .nav-account-help {
      .wrapper-nav-sub {
        width: ($baseline*10);
      }
    }

    .nav-account-user {
      .title {
        max-width: ($baseline*6.5);

        > .label {
          display: inline-block;
          max-width: 84%;
          overflow: hidden;
          white-space: nowrap;
          text-overflow: ellipsis;
        }
      }
    }

    .settings-language-form {
      margin-top: 4px;

      .language-selector {
        width: 130px;
      }
    }
  }

  // ====================

  // specific elements - pitch/how it works nav
  .nav-pitch {
    position: relative;
    padding: ($baseline*0.75) 0;

    .nav-sub {
      text-align: left;
    }
  }
}

// ====================

// CASE: user signed in
.is-signedin {
  .wrapper-l {
    width: flex-grid(8, 12);
  }

  .wrapper-r {
    width: flex-grid(4, 12);
  }

  .branding {
    margin-right: 2%;
  }

  .nav-account {
    top: ($baseline/4);
  }
}

// ====================

// CASE: in course {
.is-signedin.course {
  .wrapper-header {
    .wrapper-l {
      width: flex-grid(9, 12);
    }

    .wrapper-r {
      width: flex-grid(3, 12);
    }

    .branding {
      margin-right: 2%;
    }

    .info-course {
      width: 25%;
      margin-right: 2%;
    }

    .nav-course {
      width: 45%;
    }
  }
}

// ====================

// CASE: user not signed in
.not-signedin,
.view-util {
  .wrapper-header {
    .wrapper-l {
      width: flex-grid(2, 12);
    }

    .wrapper-r {
      width: flex-grid(10, 12);
    }

    .branding {
      width: 100%;
    }

    .nav-pitch {
      top: ($baseline/4);

      .nav-item {
        margin-right: ($baseline/2);

        &:last-child {
          margin-right: 0;
        }
      }

      .action-signup {
        padding: ($baseline/4) ($baseline/2);
        text-transform: uppercase;
      }

      .action-signin {
        padding: ($baseline/4) ($baseline/2);
        text-transform: uppercase;
      }
    }
  }
}

// dropdown
.nav-dd {
  .title {
    .label,
    .fa-caret-down {
      display: inline-block;
      vertical-align: middle;
    }

    .ui-toggle-dd {
      margin: 0;
      display: inline-block;
      vertical-align: middle;
    }

    // dropped down state
    &.is-selected {
      .ui-toggle-dd {
        transform: rotate(-180deg);
        transform-origin: 50% 50%;
      }
    }
  }

  .nav-item {
    position: relative;

    &.nav-course-settings {
      .wrapper-nav-sub {
        width: ($baseline*9);
      }
    }
  }

  .wrapper-nav-sub {
    position: absolute;
    top: ($baseline*2.5);
    opacity: 0;
    pointer-events: none;
    width: ($baseline*8);
    overflow: hidden;
    height: 0;


    // dropped down state
    &.is-shown {
      opacity: 1;
      pointer-events: auto;
      overflow: visible;
      height: auto;
    }
  }

  .nav-sub {
    border-radius: 2px;
    box-shadow: 0 1px 1px $shadow-l1;
    position: relative;
    width: 100%;
    border: 1px solid $gray-500;
    padding: ($baseline/2) ($baseline*0.75);
    background: $white;

    &::after,
    &::before {
      bottom: 100%;
      border: solid transparent;
      content: " ";
      height: 0;
      width: 0;
      position: absolute;
      pointer-events: none;
    }

    // ui triangle/nub
    &::after {
      border-color: rgba(255, 255, 255, 0);
      border-bottom-color: $white;
      border-width: 10px;
    }

    &::before {
      border-color: rgba(178, 178, 178, 0);
      border-bottom-color: $gray-500;
      border-width: 11px;
    }

    .nav-item {
      @extend %t-action3;
      @extend %t-regular;

      display: block;
      margin: 0 0 ($baseline/4) 0;
      border-bottom: 1px solid $gray-300;
      padding: 0 0($baseline/4) 0;

      &:last-child {
        margin-bottom: 0;
        border-bottom: none;
        padding-bottom: 0;
      }

      h3 {
        font-size: $font-size-lg;
      }

      a {
        display: block;
        color: $body-color;
        font-size: $font-size-lg;
        font-weight: 600;

        &:hover,
        &:active {
          color: theme-color("primary");
        }
      }
    }
  }

  // CASE: left-hand side arrow/dd
  &.ui-left {
    .wrapper-nav-sub {
      left: 0;
    }

    .nav-sub {
      text-align: left;

      // ui triangle/nub
      &::after {
        left: $baseline;
        margin-left: -10px;
      }

      &::before {
        left: $baseline;
        margin-left: -11px;
      }
    }
  }

  // CASE: right-hand side arrow/dd
  &.ui-right {
    > ol {
      margin-bottom: 0;
    }

    .wrapper-nav-sub {
      left: none;
      right: 0;
    }

    .nav-sub {

      // ui triangle/nub
      &::after {
        right: $baseline;
        margin-right: -10px;
      }

      &::before {
        right: $baseline;
        margin-right: -11px;
      }
    }
  }
}