overleaf/services/web/frontend/stylesheets/bootstrap-5/pages/editor/toolbar.scss

:root {
  --toolbar-border-color: var(--neutral-80);
  --toolbar-header-bg-color: var(--neutral-90);
  --toolbar-header-btn-border-color: var(--neutral-80);
  --toolbar-btn-color: var(--white);
  --toolbar-btn-hover-bg-color: var(--neutral-80);
  --toolbar-btn-hover-color: var(--white);
  --toolbar-btn-active-color: var(--white);
  --toolbar-btn-active-bg-color: var(--green-50);
  --toolbar-small-height: 32px;
  --toolbar-alt-bg-color: var(--neutral-80);
  --formatting-btn-color: var(--white);
  --formatting-btn-bg: var(--neutral-80);
  --formatting-btn-border: var(--neutral-70);
  --project-name-color: var(--neutral-40);
  --toolbar-filetree-bg-color: var(--neutral-80);
  --project-rename-link-color: var(--neutral-40);
  --project-rename-link-color-hover: var(--neutral-20);
  --editor-header-logo-background: url(../../../../../public/img/ol-brand/overleaf-o-white.svg)
    center / contain no-repeat;
  --editor-toolbar-bg: var(--neutral-80);
}

@include theme('light') {
  --toolbar-border-color: var(--neutral-20);
  --toolbar-header-bg-color: var(--white);
  --toolbar-header-btn-border-color: var(--neutral-20);
  --toolbar-btn-color: var(--neutral-70);
  --toolbar-btn-hover-bg-color: var(--neutral-10);
  --toolbar-btn-hover-color: var(--neutral-70);
  --toolbar-btn-active-bg-color: var(--green-50);
  --toolbar-alt-bg-color: var(--white);
  --formatting-btn-color: var(--neutral-70);
  --formatting-btn-bg: transparent;
  --formatting-btn-border: var(--neutral-20);
  --project-name-color: var(--neutral-70);
  --toolbar-filetree-bg-color: var(--white);
  --project-rename-link-color: var(--neutral-70);
  --project-rename-link-color-hover: var(--neutral-70);
  --editor-header-logo-background: url(../../../../../public/img/ol-brand/overleaf-o.svg)
    center / contain no-repeat;
  --editor-toolbar-bg: var(--white);
}

.toolbar {
  display: flex;
  align-items: center;
  height: var(--toolbar-height);
  border-bottom: 1px solid var(--toolbar-border-color);

  button {
    position: relative;

    .badge {
      position: absolute;
      top: 0;
      right: 0;
      pointer-events: none; // Labels were capturing button/anchor clicks.

      .badge-content {
        padding: 0;
      }
    }
  }

  .toolbar-right,
  .toolbar-left {
    button:not(.back-to-editor-btn) {
      background: transparent;
      box-shadow: none;
    }
  }

  .toolbar-right .back-to-editor-btn {
    margin-right: var(--spacing-09);
    display: flex;
    align-items: center;

    .toolbar-label {
      margin-bottom: 0;
    }
  }

  > a:focus,
  button:focus {
    outline: none;
  }

  > a:not(.btn),
  > button,
  .toolbar-left > a:not(.btn),
  .toolbar-left > button,
  .toolbar-right > a:not(.btn),
  .toolbar-right > button:not(.back-to-editor-btn) {
    display: inline-block;
    color: var(--toolbar-btn-color);
    background-color: transparent;
    padding: var(--spacing-01);
    line-height: 1;
    height: 24px;
    border-radius: var(--border-radius-base);

    &.toolbar-header-back-projects {
      padding: var(--spacing-02) var(--spacing-04) var(--spacing-02);
      margin-bottom: var(--spacing-01);
    }

    &:hover {
      text-shadow: none;
      color: var(--toolbar-btn-hover-color);
      background-color: transparent;
      text-decoration: none;
    }

    &.active,
    &:active {
      .label {
        display: none;
      }

      color: white;
      background-color: var(--bg-info-01);
      box-shadow: none;

      &:hover {
        color: white;
      }
    }
  }

  a.btn-full-height,
  button.btn-full-height {
    border: none;
    border-radius: 0;
    border-right: 1px solid var(--toolbar-header-btn-border-color);
    color: var(--toolbar-btn-color);
    padding: var(--spacing-02) var(--spacing-05) var(--spacing-03);
    font-size: var(--font-size-05);
    max-height: 39px;

    &:hover {
      text-shadow: none;
      background-color: var(--toolbar-btn-hover-bg-color);
      color: var(--toolbar-btn-color);
    }

    &.active,
    &:active {
      color: var(--white);
      background-color: $bg-accent-01;
      box-shadow: none;
    }

    .badge {
      top: var(--spacing-01);
      right: var(--spacing-02);
    }

    &.header-cobranding-logo-container {
      height: calc(var(--toolbar-height) - 1px);
      padding: var(--spacing-04) var(--spacing-05);
    }

    .spinner-border {
      vertical-align: middle;
      font-size: var(--font-size-02);
    }

    &.dropdown-toggle {
      line-height: 1;

      &::after {
        vertical-align: middle;
        font-size: var(--font-size-02);
      }
    }
  }

  .toolbar-left {
    display: flex;
    align-items: stretch;
    float: left;
    text-align: center;
  }

  .toolbar-right {
    display: flex;
    align-items: stretch;
    flex-grow: 1;
    justify-content: flex-end;

    a.btn-full-height,
    button.btn-full-height {
      border-right: 0;
      border-left: 1px solid var(--toolbar-header-btn-border-color);
    }
  }

  .toolbar-center {
    text-align: center;
    text-overflow: ellipsis;
    overflow: hidden;

    // At small screen sizes, center relative to the left menu and right buttons
    width: 100%;
    display: flex;
    justify-content: center;
  }

  &.toolbar-header {
    --toolbar-height: 40px;

    align-items: stretch;
    background-color: var(--toolbar-header-bg-color);
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1;
  }

  .toolbar-item {
    display: flex;
  }
}

.header-cobranding-logo {
  display: block;
  width: auto;
  max-height: 100%;
}

.toolbar-label {
  display: none;
  margin: 0 var(--spacing-02);
  font-size: var(--font-size-02);
  font-weight: 600;
  vertical-align: middle;
  text-align: left;

  @include media-breakpoint-up(lg) {
    display: inline-block;
  }

  &.toolbar-label-multiline {
    line-height: 1.1;
  }
}

.toolbar-header-upgrade-prompt {
  margin-left: var(--spacing-05);

  @include media-breakpoint-down(lg) {
    display: none !important;
  }
}

.toolbar-filetree {
  @include toolbar-sm-height;

  background-color: var(--toolbar-filetree-bg-color);
  padding: 0 var(--spacing-03);
  flex-shrink: 0;
}

.editor-menu-icon {
  &.material-symbols {
    width: 1em;
    text-indent: -9999px;
    background: var(--editor-header-logo-background);
  }
}

.project-name {
  .name {
    display: inline-block;

    @include text-truncate;

    padding: var(--spacing-03);
    vertical-align: top;
    color: var(--project-name-color);
    font-weight: 700;
  }

  input {
    height: 30px;
    margin-top: var(--spacing-02);
    padding: var(--spacing-03);
    max-width: 500px;
    text-align: center;
    font-weight: 700;
  }

  a.rename {
    visibility: hidden;
    display: inline-block;
    color: var(--project-rename-link-color);
    padding: var(--spacing-03);
    border-radius: var(--border-radius-base);
    cursor: pointer;

    &:hover {
      text-shadow: 0 1px 0 rgb(0 0 0 / 25%);
      color: var(--project-rename-link-color-hover);
      text-decoration: none;
    }
  }

  &:hover {
    a.rename {
      visibility: visible;
    }
  }
}

.toolbar-editor {
  height: 32px;
  background-color: var(--editor-toolbar-bg);
  padding: 0 5px;
  overflow: hidden;
  position: relative;
  z-index: 10; // Prevent track changes showing over toolbar
}

/**************************************
	Toggle Switch
***************************************/

.toggle-switch {
  --toggle-switch-height: 26px;
  --toggle-switch-padding: var(--spacing-01);

  display: inline-flex;
  align-items: center;
  height: var(--toggle-switch-height);
  margin-right: var(--spacing-03);
  border-radius: var(--border-radius-full);
  background-color: var(--neutral-20);
  padding: var(--toggle-switch-padding);
}

.toggle-switch-label {
  display: inline-block;
  float: left;
  font-weight: normal;

  // It seems we need to set the height explicitly rather than using 100% to get the button to display correctly in Blink
  height: calc(var(--toggle-switch-height) - 2 * var(--toggle-switch-padding));
  text-align: center;
  margin: 0;
  cursor: pointer;
  user-select: none;
  color: var(--content-secondary);
  border-radius: var(--border-radius-full);
  transition:
    color 0.12s ease-out,
    background-color 0.12s ease-out,
    box-shadow 0.12s ease-out;
  overflow: hidden;

  span {
    display: flex;
    align-items: center;
    height: 100%;
    width: 100%;
    padding: 0 var(--spacing-08);
    background-size: 200% 100%;
    background-position: 0 0;
    transition: background-position 0.12s ease-out;
    font-size: var(--font-size-02);
    font-weight: bold;
  }
}

.toggle-switch-input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.toggle-switch-input:disabled + .toggle-switch-label {
  cursor: not-allowed;
}

.toggle-switch-input:checked + .toggle-switch-label {
  span {
    background-position: -100% 0;
  }

  color: var(--white);
  background-color: var(--bg-accent-01);
  border-radius: var(--border-radius-full);
  box-shadow: 0 2px 4px rgb(30 37 48 / 16%);
}

.toggle-switch-input:checked:nth-child(2) + .toggle-switch-label {
  span {
    background-position: 100% 0;
  }
}

.editor-toggle-switch {
  display: flex;
  align-items: center;
  white-space: nowrap;

  .toggle-switch {
    margin-left: var(--spacing-03);
  }

  .toggle-switch-label span {
    background: none;
    transition: background 0.12s ease-out;
  }

  .toggle-switch-label:first-of-type span {
    padding-left: var(--spacing-04);
  }

  .toggle-switch-label:last-of-type span {
    padding-right: var(--spacing-04);
    border-right: none;
  }
}

/**************************************
	Formatting buttons
***************************************/
.formatting-btn {
  color: var(--formatting-btn-color);
  background-color: var(--formatting-btn-bg);
  padding: 0;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: none;
  border: none;
  border-left: 1px solid var(--formatting-btn-border);
  border-radius: 0;

  &:hover {
    color: var(--formatting-btn-color);
  }

  &.active {
    color: var(--white);
    background-color: var(--toolbar-btn-active-bg-color);
    box-shadow: none;

    &:focus {
      color: var(--toolbar-btn-active-color);

      &:not(:focus-visible) {
        outline: none;
      }
    }
  }

  &:focus {
    color: var(--formatting-btn-color);
  }
}

.formatting-btn-icon {
  min-width: 32px;
  width: 32px;
}

.formatting-btn-icon:last-of-type {
  border-right: 1px solid var(--formatting-btn-border);
}