overleaf/services/web/frontend/stylesheets/modules/labs.scss

.labs-opt-in-wrapper {
  color: var(--neutral-60);

  h1,
  h2,
  h3,
  h4 {
    color: var(--content-primary);
  }

  #experiments-container {
    .labs-experiment-widget-container {
      border: 1px solid var(--border-divider);
    }
  }

  .labs-icon {
    background-color: var(--green-50);
    color: var(--white);
    border-radius: 20%;
    vertical-align: text-bottom;
  }

  p {
    font-size: var(--font-size-02);
    color: var(--content-secondary);
  }

  strong {
    font-size: var(--font-size-02);
  }

  .labs-experiment-widget-container {
    --image-size: 40px;
    --image-padding: var(--spacing-01);

    display: grid;
    grid-template-columns: var(--image-size) 1fr auto auto;
    gap: var(--spacing-07);
    align-items: center;
    padding: var(--spacing-05);

    .experiment-logo-container {
      padding: var(--image-padding);
    }

    .labs-experiment-icon {
      padding: var(--spacing-03);
      color: var(--green-70);
      font-size: 24px;
    }

    img {
      width: calc(var(--image-size) - var(--image-padding) * 2);
      height: calc(var(--image-size) - var(--image-padding) * 2);
    }

    .title-row {
      display: flex;
      align-items: center;
      margin: 0 0 var(--spacing-04) 0;

      > h3 {
        margin: 0 var(--spacing-04) 0 0;
      }
    }

    p {
      margin-bottom: var(--spacing-04);

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

    &.disabled-experiment {
      grid-template-columns: var(--image-size) 3fr auto auto;
    }
  }

  @media (width < 768px) {
    .labs-experiment-widget-container {
      grid-template-columns: 1fr;
    }
  }
}

.labs-opt-in {
  .form-group {
    margin-top: var(--spacing-06);
  }
}

// Feature Preview Modal
.labs-feature-preview-modal {
  .modal-header {
    padding-bottom: var(--spacing-04);
    border-bottom: 1px solid var(--border-divider);
  }

  .modal-body {
    padding: 0;
  }
}

.labs-feature-preview-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-09);
  color: var(--content-secondary);
}

// Experiment Browser (two-panel layout)
.lab-experiment-modal-content {
  container-type: inline-size;
  container-name: lab-experiment-modal-content;
}

.lab-experiment-modal-content-inner {
  display: flex;
  height: 100%;
}

.labs-experiment-tab-content {
  flex: 1;
  min-width: 0;
}

// Fixed height in the feature preview modal, where the modal body constrains the layout
.labs-feature-preview-modal .lab-experiment-modal-content-inner {
  height: 500px;
}

.labs-experiment-sidebar {
  width: 320px;
  border-right: 1px solid var(--border-divider);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.labs-experiment-sidebar-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-04);
  padding: var(--spacing-04) var(--spacing-05);
  text-align: left;
  color: var(--content-primary);
  font-size: var(--font-size-02);
  min-height: 44px;
  text-decoration: none;

  &:hover {
    background: var(--bg-light-secondary);
    color: var(--content-primary);
  }

  &.active {
    background: var(--bg-accent-03);
    color: var(--content-primary);

    .labs-experiment-sidebar-title {
      color: var(--green-70);
      font-weight: 600;
    }
  }
}

.labs-experiment-sidebar-icon {
  font-size: 20px;
  color: var(--content-primary);
}

.labs-experiment-sidebar-title {
  flex: 1;
  min-width: 0;
  white-space: normal;
  overflow-wrap: anywhere;
}

.labs-experiment-sidebar-badge {
  // Reserve a fixed width so layout is stable whether badge is shown or not
  min-width: 60px;
  text-align: right;
}

.labs-settings-link {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--spacing-04);
  padding: var(--spacing-04) var(--spacing-05);
  text-align: left;
  color: var(--content-primary);
  font-size: var(--font-size-02);
  min-height: 44px;
  width: 100%;
  text-decoration: none;

  &:visited {
    color: var(--content-primary);
  }

  &:hover {
    background: var(--bg-light-secondary);
    color: var(--content-primary);
  }
}

.labs-settings-link-external-icon {
  font-size: 20px;
  color: var(--content-secondary);
}

.labs-badge {
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  padding: 3px 8px;
}

.labs-experiment-sidebar-arrow {
  display: none;
  font-size: 18px;
  color: var(--content-secondary);
}

// !important needed to override Bootstrap's d-inline-grid utility on OLIconButton
.labs-experiment-detail-back {
  display: none !important;
}

.labs-experiment-detail {
  padding: var(--spacing-06);
  overflow-y: auto;

  > .notification {
    margin-bottom: var(--spacing-06);

    .notification-cta {
      align-self: center;
      height: auto;
    }
  }
}

.labs-experiment-detail-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-06);

  h3 {
    margin: 0;
    font-size: var(--font-size-05);
  }
}

.labs-experiment-detail-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-04);
  margin-bottom: var(--spacing-06);
}

.labs-experiment-detail-description {
  margin-bottom: var(--spacing-06);
  color: var(--content-secondary);
  font-size: var(--font-size-02);
  line-height: var(--line-height-03);
}

// Narrow layout: drill-down navigation instead of side-by-side panels
// Uses container queries so this triggers based on the browser component's own width,
// not the viewport — works correctly whether embedded in the labs modal or the settings modal.
@container lab-experiment-modal-content (width < 600px) {
  .lab-experiment-modal-content-inner {
    flex-direction: column;
    min-height: auto;
  }

  .labs-experiment-sidebar {
    width: 100%;
    border-right: none;
  }

  .labs-experiment-sidebar-item {
    padding: var(--spacing-05) var(--spacing-06);
  }

  .labs-experiment-sidebar-arrow {
    display: block;
  }

  .labs-experiment-sidebar-badge {
    min-width: auto;
  }

  .labs-experiment-tab-content {
    display: none;
  }

  .labs-experiment-detail-back {
    display: inline-flex !important;
    margin-bottom: var(--spacing-05);
  }

  // When an experiment is selected, show detail and hide sidebar
  .lab-experiment-modal-content.mobile-detail-active {
    .labs-experiment-sidebar {
      display: none;
    }

    .labs-experiment-tab-content {
      display: block;
    }
  }
}