/*
 * Syntax-highlighting token theme for highlight.js via rehype-highlight.
 *
 * Design decisions:
 *   - Background is transparent so the bubble container (.prose-pre:bg-stone-300/50
 *     or .prose-pre:bg-white/10) owns the background. CodeBlock.tsx further wraps
 *     the <pre> in a container div that also contributes the bg — this rule just
 *     prevents hljs from re-painting the background.
 *   - Dark mode: `:root.dark` selector, matching the convention in tokens.css.
 *   - User-tone dark bubbles: `[data-tone="user"] .hljs-*` block forces readable
 *     colours on the dark background used by user message bubbles.
 *
 * Palette rationale (project token reference — see styles/tokens.css):
 *   keywords/built_in    → primary blue  (#4A83DD family)
 *   strings              → sage/green    (#22c55e family)
 *   numbers/literals     → amber         (#f59e0b family)
 *   comments             → muted grey    (--content-muted)
 *   function/class names → lighter blue  (primary-400)
 *   attributes           → coral         (#f87171 family)
 *   types/meta           → primary-300 / light blue
 *   punctuation/default  → content (inherits prose)
 */

/* ── Base reset ─────────────────────────────────────────────────────────── */
pre code.hljs {
  background: transparent;
  padding: 0;
  /* Let the parent <pre> control font-size (prose-code:text-xs). */
  font-size: inherit;
  line-height: 1.6;
}

/* ── Light mode tokens ──────────────────────────────────────────────────── */
.hljs {
  color: #171717; /* stone-900 / --content */
}

.hljs-keyword,
.hljs-selector-tag,
.hljs-tag {
  color: #2563eb; /* primary-600 */
  font-weight: 500;
}

.hljs-built_in,
.hljs-builtin-name {
  color: #1d4ed8; /* primary-700 */
}

.hljs-type,
.hljs-class .hljs-title,
.hljs-title.class_,
.hljs-title.class_.inherited__ {
  color: #3b82f6; /* primary-500 */
}

.hljs-function .hljs-title,
.hljs-title.function_,
.hljs-title {
  color: #60a5fa; /* primary-400 */
  font-weight: 500;
}

.hljs-string,
.hljs-template-string,
.hljs-regexp {
  color: #16a34a; /* sage-600 */
}

.hljs-number,
.hljs-literal {
  color: #d97706; /* amber-600 */
}

.hljs-comment,
.hljs-quote {
  color: #737373; /* --content-muted / stone-500 */
  font-style: italic;
}

.hljs-attr,
.hljs-attribute,
.hljs-selector-attr,
.hljs-selector-pseudo {
  color: #dc2626; /* coral-600 */
}

.hljs-variable,
.hljs-template-variable {
  color: #b45309; /* amber-700 */
}

.hljs-symbol,
.hljs-bullet,
.hljs-link,
.hljs-meta,
.hljs-meta .hljs-keyword,
.hljs-selector-id,
.hljs-selector-class {
  color: #1d4ed8; /* primary-700 */
}

.hljs-deletion {
  color: #dc2626;
  background: #fee2e2;
}

.hljs-addition {
  color: #15803d;
  background: #dcfce7;
}

.hljs-emphasis {
  font-style: italic;
}

.hljs-strong {
  font-weight: 700;
}

/* ── Dark mode tokens (:root.dark matches tokens.css convention) ─────────── */
:root.dark .hljs {
  color: #f5f5f5; /* neutral-100 / --content dark */
}

:root.dark .hljs-keyword,
:root.dark .hljs-selector-tag,
:root.dark .hljs-tag {
  color: #60a5fa; /* primary-400 */
}

:root.dark .hljs-built_in,
:root.dark .hljs-builtin-name {
  color: #93c5fd; /* primary-300 */
}

:root.dark .hljs-type,
:root.dark .hljs-class .hljs-title,
:root.dark .hljs-title.class_,
:root.dark .hljs-title.class_.inherited__ {
  color: #93c5fd; /* primary-300 */
}

:root.dark .hljs-function .hljs-title,
:root.dark .hljs-title.function_,
:root.dark .hljs-title {
  color: #bfdbfe; /* primary-200 */
}

:root.dark .hljs-string,
:root.dark .hljs-template-string,
:root.dark .hljs-regexp {
  color: #4ade80; /* sage-400 */
}

:root.dark .hljs-number,
:root.dark .hljs-literal {
  color: #fbbf24; /* amber-400 */
}

:root.dark .hljs-comment,
:root.dark .hljs-quote {
  color: #737373; /* stone-500 */
  font-style: italic;
}

:root.dark .hljs-attr,
:root.dark .hljs-attribute,
:root.dark .hljs-selector-attr,
:root.dark .hljs-selector-pseudo {
  color: #f87171; /* coral-400 */
}

:root.dark .hljs-variable,
:root.dark .hljs-template-variable {
  color: #fbbf24; /* amber-400 */
}

:root.dark .hljs-symbol,
:root.dark .hljs-bullet,
:root.dark .hljs-link,
:root.dark .hljs-meta,
:root.dark .hljs-meta .hljs-keyword,
:root.dark .hljs-selector-id,
:root.dark .hljs-selector-class {
  color: #93c5fd; /* primary-300 */
}

:root.dark .hljs-deletion {
  color: #f87171; /* coral-400 */
  background: rgba(239, 68, 68, 0.15);
}

:root.dark .hljs-addition {
  color: #4ade80; /* sage-400 */
  background: rgba(74, 222, 128, 0.1);
}

/* ── User-tone bubble overrides (dark background in both light + dark modes) ─ */
/*
 * User message bubbles use a dark primary-coloured background in both light
 * and dark app themes. `.data-tone="user"` is set on the CodeBlock container
 * div. These selectors ensure token colours stay legible on that dark surface.
 */
[data-tone='user'] .hljs {
  color: #f5f5f5;
}

[data-tone='user'] .hljs-keyword,
[data-tone='user'] .hljs-selector-tag,
[data-tone='user'] .hljs-tag {
  color: #93c5fd; /* primary-300 */
}

[data-tone='user'] .hljs-built_in,
[data-tone='user'] .hljs-builtin-name {
  color: #bfdbfe; /* primary-200 */
}

[data-tone='user'] .hljs-type,
[data-tone='user'] .hljs-class .hljs-title,
[data-tone='user'] .hljs-title.class_,
[data-tone='user'] .hljs-title.class_.inherited__ {
  color: #93c5fd;
}

[data-tone='user'] .hljs-function .hljs-title,
[data-tone='user'] .hljs-title.function_,
[data-tone='user'] .hljs-title {
  color: #bfdbfe;
}

[data-tone='user'] .hljs-string,
[data-tone='user'] .hljs-template-string,
[data-tone='user'] .hljs-regexp {
  color: #86efac; /* sage-300 */
}

[data-tone='user'] .hljs-number,
[data-tone='user'] .hljs-literal {
  color: #fde68a; /* amber-200 */
}

[data-tone='user'] .hljs-comment,
[data-tone='user'] .hljs-quote {
  color: #a3a3a3; /* neutral-400 */
  font-style: italic;
}

[data-tone='user'] .hljs-attr,
[data-tone='user'] .hljs-attribute,
[data-tone='user'] .hljs-selector-attr,
[data-tone='user'] .hljs-selector-pseudo {
  color: #fca5a5; /* coral-300 */
}

[data-tone='user'] .hljs-variable,
[data-tone='user'] .hljs-template-variable {
  color: #fde68a; /* amber-200 */
}

[data-tone='user'] .hljs-symbol,
[data-tone='user'] .hljs-bullet,
[data-tone='user'] .hljs-link,
[data-tone='user'] .hljs-meta,
[data-tone='user'] .hljs-meta .hljs-keyword,
[data-tone='user'] .hljs-selector-id,
[data-tone='user'] .hljs-selector-class {
  color: #bfdbfe; /* primary-200 */
}

[data-tone='user'] .hljs-deletion {
  color: #fca5a5;
  background: rgba(239, 68, 68, 0.2);
}

[data-tone='user'] .hljs-addition {
  color: #86efac;
  background: rgba(74, 222, 128, 0.15);
}