Overleaf/services/web/frontend/stylesheets/components/dropdown-menu.scss

@mixin light-dropdown-menu {
  --dropdown-text-color: var(--neutral-90);
  --dropdown-text-secondary: var(--content-secondary);
  --dropdown-text-active: var(--green-70);
  --dropdown-text-danger: var(--content-danger);
  --dropdown-text-danger-hover: var(--content-danger);
  --dropdown-header-text-color: var(--content-secondary);
  --dropdown-background: var(--white);
  --dropdown-background-active: var(--bg-accent-03);
  --dropdown-background-hover: var(--bg-light-secondary);
  --dropdown-background-danger-hover: var(--bg-danger-03);
  --dropdown-border-divider: var(--border-divider);
  --dropdown-text-hover: var(--content-primary);
  --dropdown-border-width: 0;
  --dropdown-border-color: transparent;
}

@mixin dark-dropdown-menu {
  --dropdown-background: var(--bg-dark-primary);
  --dropdown-background-hover: var(--bg-dark-secondary);
  --dropdown-background-danger-hover: var(--bg-danger-02);
  --dropdown-text-color: var(--content-primary-dark);
  --dropdown-text-danger: var(--red-40);
  --dropdown-text-danger-hover: var(--red-20);
  --dropdown-text-secondary: var(--content-secondary-dark);
  --dropdown-header-text-color: var(--content-secondary-dark);
  --dropdown-text-hover: var(--content-primary-dark);
  --dropdown-background-active: var(--green-70);
  --dropdown-text-active: var(--green-10);
  --dropdown-border-divider: var(--border-divider-dark);
  --dropdown-border-width: 1px;
  --dropdown-border-color: var(--border-primary);
}

:root {
  @include light-dropdown-menu;
}

@include theme('default') {
  .ide-redesign-main,
  .project-ds-nav-page {
    @include dark-dropdown-menu;
  }
}

$dropdown-item-min-height: 36px;

.dropdown {
  display: inline-flex;

  .no-left-border {
    border-left: none;
  }

  .custom-toggle {
    &::after {
      content: none !important;
    }

    padding-left: var(--spacing-04);
    padding-right: var(--spacing-05);
    display: flex;
    align-items: center;
  }
}

.dropdown-header {
  @include body-xs;

  min-height: $dropdown-item-min-height; // a minimum height of 36px to be accessible for touch screens
  padding: var(--spacing-05) var(--spacing-06) var(--spacing-02)
    var(--spacing-04);
  color: var(--dropdown-header-text-color);
}

.dropdown-menu.dropdown-menu-unpositioned {
  position: unset;
  top: unset;
  left: unset;
  z-index: unset;
  display: block;
  float: unset;
}

.dropdown-menu {
  @include shadow-md;

  border: var(--dropdown-border-width) solid var(--dropdown-border-color);
  min-width: 240px;
  background-color: var(--dropdown-background);

  &.dropdown-menu-sm-width {
    min-width: 160px;
  }

  .subdued {
    color: var(--content-disabled);
  }
}

.dropdown-item {
  @include body-sm;

  --bs-dropdown-item-border-radius: var(--border-radius-base);

  display: grid;
  grid-auto-flow: column;
  place-content: center start;
  min-height: $dropdown-item-min-height; // a minimum height of 36px to be accessible for touch screens
  position: relative;
  background-color: var(--dropdown-background);

  &:active {
    background-color: var(--dropdown-background-active);
  }

  &,
  &:active,
  &:visited {
    color: var(--dropdown-text-color);
  }

  &:hover:not(.active),
  &:focus:not(.active),
  &.nested-dropdown-toggle-shown {
    color: var(--dropdown-text-hover);
    background-color: var(--dropdown-background-hover);
    cursor: pointer;
    text-decoration: none;
  }

  &[variant='danger'] {
    color: var(--dropdown-text-danger);

    &:hover:not(.active),
    &:focus:not(.active) {
      color: var(--dropdown-text-danger-hover);
      background-color: var(--dropdown-background-danger-hover);
    }
  }

  &.active {
    background-color: var(--dropdown-background-active);
    color: var(--dropdown-text-active);
  }

  &.btn-link {
    text-decoration: none;

    &:hover,
    &:focus {
      color: inherit;
    }
  }
}

.dropdown-divider {
  border-top-color: var(--dropdown-border-divider);
  margin: var(--spacing-01) var(--spacing-03);
}

.dropdown-item-description {
  @include body-xs;

  color: var(--dropdown-text-secondary);
  margin-top: var(--spacing-01);
  text-wrap: wrap;
}

.dropdown-item-description-container {
  grid-auto-flow: row;
  min-height: 44px;
  display: grid;
  place-content: center start;
}

.dropdown-item-trailing-icon {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
}

.dropdown-item-leading-icon {
  display: flex;
  align-items: center;
  padding-right: var(--spacing-04);

  &.spinner {
    margin-left: var(--spacing-01);
    margin-right: var(--spacing-01);
  }
}

.dropdown-item-leading-icon,
.dropdown-item-trailing-icon {
  .material-symbols {
    vertical-align: top;
  }
}

.dropdown-item-leading-icon-empty {
  display: inline-block;
  width: 20px;
}

// description text should look disabled when the dropdown item is disabled
.dropdown-item.disabled .dropdown-item-description,
.dropdown-item[aria-disabled='true'] .dropdown-item-description {
  background-color: transparent;
  color: var(--content-disabled);
}

// override disabled styles when the state is active
.dropdown-item.active .dropdown-item-description {
  background-color: initial;
  color: var(--dropdown-text-active);
}

.dropdown-button-toggle {
  border-bottom-left-radius: 0;
  border-top-left-radius: 0;
  padding-right: var(--spacing-05);
  padding-left: var(--spacing-05);
  margin-left: 0;

  &.btn-primary,
  &.btn-danger {
    border-left: 1px solid rgb($neutral-90, 0.16);
  }

  &.btn-secondary {
    border-left: 1px solid var(--neutral-60);
  }

  &[disabled],
  &[aria-disabled='true'] {
    border-left: 1px solid var(--neutral-10);
  }
}

.select-dropdown-menu {
  top: 100%;
  margin-top: var(--spacing-04);
  width: 100%;
  max-height: 200px;
  overflow: auto;
  overflow-x: hidden;
}

.dropdown-item-highlighted {
  background-color: var(--dropdown-background-hover);
}

.dropdown-item-material-icon-small {
  .material-symbols,
  &.material-symbols {
    font-size: var(--bs-body-font-size);

    // Centre the symbol in a 20px-by-20px box
    width: 20px;
    line-height: 20px;
    text-align: center;
  }
}

.nested-dropdown-toggle {
  &::after {
    content: none !important;
  }

  display: flex;
  justify-content: space-between;
}