opencode/packages/ui/src/components/tabs.css

[data-component="tabs"] {
  --tabs-bar-height: 48px;
  --tabs-compact-pill-height: 24px;
  --tabs-compact-pill-radius: 6px;
  --tabs-compact-pill-padding-x: 4px;

  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  background-color: var(--background-stronger);
  overflow: clip;

  [data-slot="tabs-list"] {
    height: 48px;
    width: 100%;
    position: relative;
    display: flex;
    align-items: center;
    overflow-x: auto;

    /* Hide scrollbar */
    scrollbar-width: none;
    -ms-overflow-style: none;
    &::-webkit-scrollbar {
      display: none;
    }

    /* After element to fill remaining space */
    &::after {
      content: "";
      display: block;
      flex-grow: 1;
      height: 100%;
      border-bottom: 1px solid var(--border-weak-base);
      background-color: var(--background-base);
    }

    &:empty::after {
      display: none;
    }
  }

  [data-slot="tabs-trigger-wrapper"] {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-base);

    /* text-14-medium */
    font-family: var(--font-family-sans);
    font-size: 14px;
    font-style: normal;
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-large); /* 142.857% */
    letter-spacing: var(--letter-spacing-normal);

    white-space: nowrap;
    flex-shrink: 0;
    max-width: 280px;
    border-bottom: 1px solid var(--border-weak-base);
    border-right: 1px solid var(--border-weak-base);
    background-color: var(--background-base);

    [data-slot="tabs-trigger"] {
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 14px 24px 14px 12px;
      outline: none;
      min-width: 0;
      overflow: hidden;
      text-overflow: ellipsis;

      &:focus-visible {
        outline: none;
        box-shadow: none;
      }
    }

    [data-slot="tabs-trigger-close-button"] {
      display: flex;
      align-items: center;
      justify-content: center;
    }

    [data-component="icon-button"] {
      margin: -0.25rem;
    }

    &:disabled {
      pointer-events: none;
      color: var(--text-weaker);
    }
    &:focus-visible {
      outline: none;
      box-shadow: none;
    }
    &:has([data-selected]) {
      color: var(--text-strong);
      background-color: transparent;
      border-bottom-color: transparent;
      [data-slot="tabs-trigger-close-button"] {
        opacity: 1;
      }
    }

    &:hover:not(:disabled):not([data-selected]) {
      color: var(--text-strong);
    }
    &:has([data-slot="tabs-trigger-close-button"]) {
      padding-right: 12px;

      [data-slot="tabs-trigger"] {
        padding-right: 0;
      }
    }
  }

  [data-slot="tabs-content"] {
    overflow-y: auto;
    flex: 1;

    /* Hide scrollbar */
    scrollbar-width: none;
    -ms-overflow-style: none;
    &::-webkit-scrollbar {
      display: none;
    }

    &:focus-visible {
      outline: none;
    }
  }

  #review-panel &[data-variant="normal"][data-orientation="horizontal"] {
    background-color: var(--background-stronger);

    [data-slot="tabs-list"] {
      height: var(--tabs-bar-height);
      padding-left: 12px;
      padding-right: 0;
      --tabs-review-gap: 16px;
      --tabs-review-fade: 16px;
      gap: var(--tabs-review-gap);
      background-color: var(--background-stronger);
      border-bottom: 1px solid var(--border-weaker-base);

      &::after {
        display: none;
      }

      > .sticky {
        border-bottom: none;
        background-color: var(--background-stronger);

        &::before {
          content: "";
          position: absolute;
          top: 0;
          bottom: 0;
          left: calc(var(--tabs-review-fade) * -1);
          width: var(--tabs-review-fade);
          pointer-events: none;
          background: linear-gradient(90deg, transparent, var(--background-stronger));
        }
      }
    }

    [data-slot="tabs-trigger-wrapper"] {
      height: var(--tabs-compact-pill-height);
      margin-block: 0;
      max-width: 320px;
      padding-inline: var(--tabs-compact-pill-padding-x);
      box-sizing: border-box;
      border: 1px solid transparent;
      border-radius: var(--tabs-compact-pill-radius);
      background-color: transparent;
      gap: 8px;
      color: var(--text-weak);
      transition:
        color 120ms ease,
        background-color 120ms ease,
        border-color 120ms ease;

      &::after {
        content: "";
        position: absolute;
        left: 0;
        right: 0;
        bottom: calc((var(--tabs-compact-pill-height) - var(--tabs-bar-height)) / 2);
        height: 1px;
        background-color: var(--text-strong);
        opacity: 0;
        transform: scaleX(0.75);
        transform-origin: center;
        transition:
          opacity 120ms ease,
          transform 120ms ease;
      }

      &[data-value="review"] {
        padding-left: 8px;
        padding-right: 8px;
      }

      [data-slot="tabs-trigger"] {
        height: 100%;
        padding: 0 !important;
      }

      &:has([data-slot="tabs-trigger-close-button"]) {
        padding-right: 5px;
        [data-slot="tabs-trigger"] {
          padding-right: 0 !important;
        }
      }

      &:has([data-selected]) {
        color: var(--text-strong);
        background-color: var(--surface-base-active);
        border-color: var(--border-weak-base);

        &::after {
          opacity: 1;
          transform: scaleX(1);
        }
      }

      &:hover:not(:disabled):not(:has([data-selected])) {
        color: var(--text-base);
        background-color: var(--surface-base-hover);
      }

      /*
        File tabs: use monochrome icon by default.
        Full-color icon is shown on hover/selected.
      */
      [data-slot="tabs-trigger"] {
        .tab-fileicon-color,
        .tab-fileicon-mono {
          pointer-events: none;
        }

        .tab-fileicon-color {
          display: none;
        }

        .tab-fileicon-mono {
          display: block;
          color: currentColor;
        }

        &[data-selected],
        &:hover {
          .tab-fileicon-color {
            display: block;
          }

          .tab-fileicon-mono {
            display: none;
          }
        }
      }
    }
  }

  &[data-variant="alt"] {
    [data-slot="tabs-list"] {
      padding-left: 24px;
      padding-right: 24px;
      gap: 12px;
      border-bottom: 1px solid var(--border-weak-base);
      background-color: transparent;

      &::after {
        border: none;
        background-color: transparent;
      }
      &:empty::after {
        display: none;
      }
    }

    [data-slot="tabs-trigger-wrapper"] {
      border: none;
      color: var(--text-base);
      background-color: transparent;
      border-bottom-width: 2px;
      border-bottom-style: solid;
      border-bottom-color: transparent;
      gap: 4px;

      /* text-14-regular */
      font-family: var(--font-family-sans);
      font-size: var(--font-size-base);
      font-style: normal;
      font-weight: var(--font-weight-regular);
      line-height: var(--line-height-x-large); /* 171.429% */
      letter-spacing: var(--letter-spacing-normal);

      [data-slot="tabs-trigger"] {
        height: 100%;
        padding: 4px;
        background-color: transparent;
        border-bottom-width: 2px;
        border-bottom-color: transparent;
      }

      [data-slot="tabs-trigger-close-button"] {
        display: flex;
        align-items: center;
        justify-content: center;
      }

      [data-component="icon-button"] {
        width: 16px;
        height: 16px;
        margin: 0;
      }

      &:has([data-selected]) {
        color: var(--text-strong);
        background-color: transparent;
        border-bottom-color: var(--icon-strong-base);
      }

      &:hover:not(:disabled):not([data-selected]) {
        color: var(--text-strong);
      }

      &:has([data-slot="tabs-trigger-close-button"]) {
        padding-right: 0;
        [data-slot="tabs-trigger"] {
          padding-right: 0;
        }
      }
    }

    /* [data-slot="tabs-content"] { */
    /* } */
  }

  &[data-variant="pill"][data-orientation="horizontal"] {
    background-color: transparent;

    [data-slot="tabs-list"] {
      height: auto;
      padding: 6px 0;
      gap: 4px;
      background-color: var(--background-base);

      &::after {
        display: none;
      }
    }

    [data-slot="tabs-trigger-wrapper"] {
      height: 32px;
      border: none;
      border-radius: var(--radius-sm);
      background-color: transparent;
      gap: 0;

      /* text-13-medium */
      font-family: var(--font-family-sans);
      font-size: var(--font-size-small);
      font-style: normal;
      font-weight: var(--font-weight-medium);
      line-height: var(--line-height-large);
      letter-spacing: var(--letter-spacing-normal);

      [data-slot="tabs-trigger"] {
        height: 100%;
        width: 100%;
        padding: 0 12px;
        background-color: transparent;
      }

      &:hover:not(:disabled) {
        background-color: var(--surface-base-hover);
        color: var(--text-strong);
      }

      &:active:not(:disabled) {
        background-color: var(--surface-base-active);
      }

      &:has([data-selected]) {
        background-color: var(--surface-base-active);
        color: var(--text-strong);

        &:hover:not(:disabled) {
          background-color: var(--surface-base-active);
        }
      }
    }
  }

  &[data-variant="pill"][data-orientation="horizontal"][data-scope="filetree"] {
    [data-slot="tabs-list"] {
      height: 48px;
      padding-inline: 12px;
      gap: 8px;
      align-items: center;
      background-color: var(--background-stronger);
      box-sizing: border-box;
      border-bottom: 1px solid var(--border-weak-base);
    }

    [data-slot="tabs-trigger-wrapper"] {
      height: var(--tabs-compact-pill-height);
      border-radius: var(--tabs-compact-pill-radius);
      color: var(--text-weak);
      box-sizing: border-box;
      border: 1px solid transparent;
      transition:
        color 120ms ease,
        background-color 120ms ease,
        border-color 120ms ease;

      &:not(:has([data-selected])):hover:not(:disabled) {
        color: var(--text-base);
      }

      &:has([data-selected]) {
        color: var(--text-strong);
        border-color: var(--border-weak-base);
      }
    }
  }

  &[data-orientation="vertical"] {
    flex-direction: row;

    [data-slot="tabs-list"] {
      flex-direction: column;
      width: auto;
      height: 100%;
      overflow-x: hidden;
      overflow-y: auto;
      padding: 8px;
      gap: 4px;
      background-color: var(--background-base);
      border-right: 1px solid var(--border-weak-base);

      &::after {
        display: none;
      }
    }

    [data-slot="tabs-trigger-wrapper"] {
      width: 100%;
      height: 32px;
      border: none;
      border-radius: 8px;
      background-color: transparent;

      [data-slot="tabs-trigger"] {
        height: 100%;
        padding: 0 8px;
        gap: 8px;
        justify-content: flex-start;
      }

      &:hover:not(:disabled) {
        background-color: var(--surface-base-hover);
      }

      &:has([data-selected]) {
        background-color: var(--surface-base-active);
        color: var(--text-strong);
      }
    }

    [data-slot="tabs-content"] {
      overflow-x: auto;
      overflow-y: auto;
    }

    &[data-variant="alt"] {
      [data-slot="tabs-list"] {
        padding: 8px;
        gap: 4px;
        border: none;

        &::after {
          display: none;
        }
      }

      [data-slot="tabs-trigger-wrapper"] {
        height: 32px;
        border: none;
        border-radius: 8px;

        [data-slot="tabs-trigger"] {
          border: none;
          padding: 0 8px;
          gap: 8px;
          justify-content: flex-start;
        }

        &:hover:not(:disabled) {
          background-color: var(--surface-base-hover);
        }

        &:has([data-selected]) {
          background-color: var(--surface-base-hover);
          color: var(--text-strong);
        }
      }
    }

    &[data-variant="settings"] {
      [data-slot="tabs-list"] {
        width: 150px;
        min-width: 150px;

        @media (min-width: 640px) {
          width: 200px;
          min-width: 200px;
        }
        padding: 12px;
        gap: 0;
        background-color: var(--background-base);
        border-right: 1px solid var(--border-weak-base);

        &::after {
          display: none;
        }
      }

      [data-slot="tabs-section-title"] {
        width: 100%;
        padding: 0 0 0 4px;
        font-family: var(--font-family-sans);
        font-size: var(--font-size-small);
        font-weight: var(--font-weight-medium);
        color: var(--text-weak);
      }

      [data-slot="tabs-trigger-wrapper"] {
        height: 32px;
        border: none;
        border-radius: var(--radius-md);

        /* text-14-medium */
        font-family: var(--font-family-sans);
        font-size: var(--font-size-base);
        font-weight: var(--font-weight-medium);
        line-height: var(--line-height-large);

        [data-slot="tabs-trigger"] {
          border: none;
          padding: 0 8px;
          gap: 12px;
          justify-content: flex-start;
          width: 100%;
          height: 100%;
        }

        [data-component="icon"] {
          color: var(--icon-base);
        }

        &:hover:not(:disabled) {
          background-color: var(--surface-base-hover);
        }

        &:has([data-slot="tabs-trigger"]:focus-visible) {
          background-color: var(--surface-base-hover);
          box-shadow: var(--shadow-xs-border-focus);
        }

        &:has([data-selected]) {
          background-color: var(--surface-base-active);
          color: var(--text-strong);

          [data-component="icon"] {
            color: var(--icon-strong-base);
          }

          &:hover:not(:disabled) {
            background-color: var(--surface-base-active);
          }
        }
      }

      [data-slot="tabs-content"] {
        background-color: var(--surface-stronger-non-alpha);
      }
    }
  }
}

[data-component="tabs-drag-preview"] {
  position: relative;
  display: flex;
  align-items: center;
  height: var(--tabs-bar-height, 48px);
  max-width: 320px;
  padding-inline: var(--tabs-compact-pill-padding-x, 4px);
  overflow: hidden;
  color: var(--text-strong);
  opacity: 0.6;
}

[data-component="tabs-drag-preview"]::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: calc((var(--tabs-bar-height, 48px) - var(--tabs-compact-pill-height, 24px)) / 2);
  height: var(--tabs-compact-pill-height, 24px);
  border: 1px solid var(--border-weak-base);
  border-radius: var(--tabs-compact-pill-radius, 6px);
  background-color: var(--surface-base-active);
}

[data-component="tabs-drag-preview"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background-color: var(--text-strong);
}

[data-component="tabs-drag-preview"] > * {
  position: relative;
}