hermes-web/packages/client/src/styles/code-block.scss

@use 'variables' as *;

// Shared code-block styles used by markdown rendering and tool payload details.
// Keep these global so v-html output in both MarkdownRenderer.vue and MessageItem.vue
// stays styled even though the HTML is not compiled as Vue template content.
//
// CYBER is a single dark theme, so there is no light variant: one rule set,
// one palette. Syntax colors stay inside the established semantic set — cyan for
// structure, green for strings, amber for literals, red for types, muted for
// comments — so a code block never competes with the neon accent for attention.

.hljs-code-block {
  margin: 8px 0;
  border-radius: $radius-sm;
  overflow: hidden;
  background: $code-bg;
  border: 1px solid $border-color;
  box-sizing: border-box;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  white-space: normal;

  .code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 12px;
    background: $bg-card;
    border-bottom: 1px solid var(--border-light);

    .code-lang {
      font-size: 11px;
      color: $accent-primary;
      text-transform: uppercase;
      letter-spacing: 0.08em;
    }

    .copy-btn {
      font-size: 11px;
      color: $text-muted;
      background: none;
      border: none;
      cursor: pointer;
      padding: 2px 6px;
      border-radius: 3px;
      transition: color $transition-fast, background-color $transition-fast;

      &:hover {
        color: $accent-primary;
        background: rgba(var(--accent-primary-rgb), 0.1);
      }
    }
  }

  code.hljs {
    display: block;
    padding: 12px;
    font-family: $font-code;
    font-size: 13px;
    line-height: 1.5;
    overflow-x: auto;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    word-break: break-word;
  }

  &.hljs-unified-diff {
    code.hljs {
      display: block;
      padding: 0;
      overflow-x: auto;
      white-space: pre;
      overflow-wrap: normal;
      word-break: normal;
      line-height: 1.45;
    }

    .diff-line {
      display: grid;
      grid-template-columns: 58px max-content;
      min-width: max-content;
      white-space: pre;
    }

    .diff-line-number {
      user-select: none;
      text-align: right;
      padding: 0 14px 0 10px;
      color: var(--text-faint);
      background: rgba(0, 0, 0, 0.22);
      border-right: 1px solid var(--border-light);
    }

    .diff-line-content {
      padding: 0 12px;
      white-space: pre;
    }

    .diff-line-file-header {
      color: $text-secondary;
      background: rgba(var(--accent-info-rgb), 0.16);
    }

    .diff-line-hunk-header {
      color: $accent-primary;
      background: rgba(var(--accent-primary-rgb), 0.12);
    }

    .diff-line-context-fold {
      color: var(--text-faint);
      background: rgba(255, 255, 255, 0.05);
      font-style: italic;
    }

    .diff-line-added {
      color: $success;
      background: rgba(var(--success-rgb), 0.14);

      .diff-line-number {
        color: $success;
        background: rgba(var(--success-rgb), 0.2);
      }
    }

    .diff-line-removed {
      color: $error;
      background: rgba(var(--error-rgb), 0.14);

      .diff-line-number {
        color: $error;
        background: rgba(var(--error-rgb), 0.2);
      }
    }
  }
}

// ─── highlight.js token colors ───────────────────────────────────────────
.hljs-code-block {
  .hljs {
    color: $text-primary;
    background: none;
  }

  .hljs-keyword,
  .hljs-selector-tag,
  .hljs-meta .hljs-keyword {
    color: $accent-primary;
    font-weight: 600;
  }

  .hljs-string,
  .hljs-attr,
  .hljs-regexp,
  .hljs-template-variable {
    color: $success;
  }

  .hljs-number,
  .hljs-literal,
  .hljs-symbol,
  .hljs-bullet {
    color: $warning;
  }

  .hljs-comment,
  .hljs-quote {
    color: var(--text-faint);
    font-style: italic;
  }

  .hljs-built_in,
  .hljs-title.class_,
  .hljs-title.function_ {
    color: $info;
  }

  .hljs-type,
  .hljs-variable,
  .hljs-property,
  .hljs-params {
    color: $error;
  }

  .hljs-tag,
  .hljs-name,
  .hljs-section,
  .hljs-title {
    color: $text-primary;
  }

  .hljs-meta {
    color: var(--text-muted);
  }
}