deepseek-harness/packages/client/ui-primitives/src/markdown/CodeBlock.module.css

/* Visual baseline: deepsuite `@deepseek/md` code-block.css. Highlight colors
   stay on the existing shiki `--shiki-*` sheet (not Prism highlight.css). */

.block {
  --dsl-code-block-banner-background-color: var(--dsw-alias-markdown-code-block-banner);
  --dsl-code-block-border-radius: 12px;
  /* Local 11/18 instead of the shared --dsw-font-xs-13: the banner scales
     with the markdown 0.875 ladder without shrinking every other xs-13 use. */
  --dsl-code-block-banner-font: 11px/18px var(--dsw-font-family);
  --dsl-code-block-banner-height: 36px;
  --dsl-code-block-content-font: var(--dsw-font-markdown-code-block);
  --dsl-code-block-background: var(--dsw-alias-markdown-code-block);

  position: relative;
  width: 100%;
  max-width: 100%;
  margin: 16px 0;
  color: var(--dsw-alias-label-primary);
  background: var(--dsl-code-block-background);
  border-radius: var(--dsl-code-block-border-radius);
}

.block:not(:last-child) {
  margin-bottom: 11px;
}

.bannerWrap {
  position: sticky;
  top: 0;
  z-index: 6;
  background-color: var(--dsw-alias-bg-base);
  border-top-left-radius: var(--dsl-code-block-border-radius);
  border-top-right-radius: var(--dsl-code-block-border-radius);
  transition: opacity 160ms ease;
}

.block[data-preview] .bannerWrap {
  opacity: 0;
}

.block[data-preview]:hover .bannerWrap,
.block[data-preview]:has(:focus-visible) .bannerWrap {
  opacity: 1;
}

.banner {
  background: var(--dsl-code-block-banner-background-color);
  padding: 4px 10px 4px 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font: var(--dsl-code-block-banner-font);
  border-top-left-radius: var(--dsl-code-block-border-radius);
  border-top-right-radius: var(--dsl-code-block-border-radius);
}

.infostring {
  color: var(--dsw-alias-label-primary);
  font-family: var(--ds-font-family-code);
  font-size: 11px;
  line-height: 18px;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.action {
  min-height: 28px;
  display: flex;
  align-items: center;
  flex-shrink: 0;
  gap: 2px;
}

/* Match the sidebar pane controls: a 28px circle around a 15px glyph. */
.iconButton {
  display: inline-flex;
  flex: none;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  width: 28px;
  height: 28px;
  padding: 6px;
  color: var(--dsw-alias-label-secondary);
  line-height: 1;
  background: transparent;
  border: none;
  border-radius: 28px;
  cursor: pointer;
}

.iconButton svg {
  width: 15px;
  height: 15px;
}

.iconButton:hover:not(:disabled) {
  background: var(--dsw-alias-interactive-bg-hover);
}

.iconButton[aria-pressed='true'] {
  background: var(--dsw-alias-interactive-bg-hover);
  color: var(--dsw-alias-label-primary);
}

.iconButton:disabled {
  color: var(--dsw-alias-label-tertiary);
  cursor: default;
}

.previewActionSlot,
.iconSlot {
  display: inline-flex;
}

.segments {
  position: relative;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  padding: 2px;
  margin-left: 4px;
  border-radius: 8px;
  background: var(--dsw-alias-interactive-bg-hover);
  isolation: isolate;
}

.selection {
  position: absolute;
  inset: 2px;
  width: calc((100% - 4px) / 2);
  border-radius: 6px;
  background: var(--dsw-alias-bg-base);
  transition: transform 160ms ease;
  z-index: -1;
}

.segments[data-preview-selected] .selection {
  transform: translateX(100%);
}

.segments:has(.sourceOnly) .selection {
  width: calc(100% - 4px);
}

.segments button,
.sourceOnly {
  border: 0;
  background: transparent;
  color: inherit;
  padding: 2px 8px;
  font: inherit;
  white-space: nowrap;
  text-align: center;
}

.segments button {
  cursor: pointer;
}

.segments button[aria-pressed='false'] {
  color: var(--dsw-alias-label-secondary);
}

.body {
  min-height: 0;
}

.previewActionSlot[hidden] {
  display: none;
}

.sourceHidden {
  visibility: hidden;
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  .selection { transition: none; }
  .bannerWrap { transition: none; }
}

@media (hover: none) {
  .block[data-preview] .bannerWrap { opacity: 1; }
}

.block :where(pre) {
  font: var(--dsl-code-block-content-font);
  padding: 16px;
  margin: 0 !important;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
  background: var(--dsl-code-block-background);
  /* Bottom radii live on <pre>: overflow:hidden on .block would kill the
     sticky banner, and this opaque fill otherwise squares off the wrapper. */
  border-bottom-left-radius: var(--dsl-code-block-border-radius);
  border-bottom-right-radius: var(--dsl-code-block-border-radius);
}

/* Shiki inlines its theme background var; route it to the repo token. */
.block :where(pre.shiki) {
  background: var(--dsl-code-block-background) !important;
}

.block :where(pre) code {
  font: inherit;
  background: none;
  padding: 0;
}

.plain {
  color: var(--dsw-alias-label-primary);
}

.previewLayer {
  display: grid;
  overflow: auto;
  background: var(--dsl-code-block-background);
  border-bottom-right-radius: var(--dsl-code-block-border-radius);
  border-bottom-left-radius: var(--dsl-code-block-border-radius);
}

/* The retained image sizes both views without laying out hidden source. */
.previewLayer[hidden] {
  display: grid;
  visibility: hidden;
  pointer-events: none;
}

.previewable > .body {
  position: absolute;
  inset: 0;
  overflow: auto;
  border-radius: inherit;
}

.previewable[data-code-block-header] > .body {
  inset-block-start: var(--dsl-code-block-banner-height);
}

.numbered :where(pre) code {
  display: block;
  counter-reset: source-line;
  white-space: normal;
}

.numbered :where(pre) code > :global(.line) {
  position: relative;
  display: block;
  min-height: 1lh;
  padding-inline-start: calc(var(--dsl-code-block-line-number-width) + 12px);
  counter-increment: source-line;
  white-space: var(--dsl-code-block-line-white-space, pre-wrap);
}

.numbered :where(pre) code > :global(.line)::before {
  position: absolute;
  inset-inline-start: 0;
  width: var(--dsl-code-block-line-number-width);
  color: var(--dsw-alias-label-tertiary);
  text-align: end;
  content: counter(source-line);
  user-select: none;
}

@media (max-width: 480px) {
  .banner {
    gap: 4px;
    padding-inline: 8px;
  }

  .segments {
    margin-left: 0;
  }

  .segments button,
  .sourceOnly {
    padding-inline: 4px;
  }
}