/* Genefold Engineering — shared styles for index.html and the 00*.html notes.   Extracted from the per-page <style> blocks. Page-specific CSS stays inline and overrides this file. */

/* ── Engineering blog tokens & overrides ─────────────────────── */
.eng-root .site-shell {
  padding-bottom: 2rem;
}

/* ── Home utility ────────────────────────────────────────────── */
.eng-home {
  padding: 1.05rem 0 0;
}

.eng-home a {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--eng-muted);
  text-decoration: none;
  transition: color 0.15s;
}

.eng-home a:hover, .eng-home a:focus-visible {
  color: var(--text);
}

/* ── Article header ──────────────────────────────────────────── */
.eng-article {
  max-width: var(--eng-max-width);
  margin: 0 auto;
  padding: 3rem 0 4rem;
}

.eng-article__back {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.85rem;
  color: var(--eng-muted);
  text-decoration: none;
  margin-bottom: 2rem;
  transition: color 0.15s;
}

.eng-article__back:hover {
  color: var(--primary);
}

.eng-article__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--eng-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--primary);
  border: 1px solid rgba(104, 240, 211, 0.2);
  background: rgba(104, 240, 211, 0.08);
  border-radius: 999px;
  padding: 0.25rem 0.7rem;
  margin-bottom: 1.25rem;
}

.eng-article__lede {
  font-size: 1.15rem;
  line-height: 1.65;
  color: var(--eng-muted);
  margin: 0 0 1.5rem;
  max-width: 60ch;
}

.eng-article__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0;
  border-top: 1px solid var(--eng-line);
  border-bottom: 1px solid var(--eng-line);
  font-family: var(--eng-mono);
  font-size: 0.78rem;
  color: var(--eng-muted);
}

.eng-article__meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

/* ── Article body ────────────────────────────────────────────── */
.eng-article__body {
  padding-top: 2.5rem;
}

.eng-article__body h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text);
  margin: 2.5rem 0 1rem;
  letter-spacing: -0.02em;
}

.eng-article__body h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  margin: 2rem 0 0.75rem;
}

.eng-article__body p {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--eng-muted);
  margin: 0 0 1.25rem;
}

.eng-article__body p strong {
  color: var(--text);
  font-weight: 600;
}

.eng-article__body em {
  color: var(--secondary);
  font-style: italic;
}

.eng-article__body a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.15s;
}

.eng-article__body a:hover {
  color: var(--text);
}

.eng-article__body ul, .eng-article__body ol {
  margin: 0 0 1.5rem;
  padding-left: 1.5rem;
  color: var(--eng-muted);
}

.eng-article__body li {
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 0.5rem;
}

.eng-article__body li::marker {
  color: var(--primary);
}

.eng-article__body code {
  font-family: var(--eng-mono);
  font-size: 0.9em;
  padding: 0.15rem 0.35rem;
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

.eng-article__body pre {
  padding: 1.25rem;
  border-radius: var(--radius-s);
  border: 1px solid var(--eng-line);
  background: rgba(0, 0, 0, 0.28);
  overflow-x: auto;
  margin: 0 0 1.5rem;
}

.eng-article__body pre code {
  display: block;
  padding: 0;
  background: transparent;
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--eng-muted);
}

.eng-article__body blockquote {
  margin: 0 0 1.5rem;
  padding: 1rem 1.25rem;
  border-left: 3px solid var(--accent);
  border-radius: 0 8px 8px 0;
  background: rgba(255, 122, 143, 0.06);
}

.eng-article__body blockquote p {
  margin: 0;
  font-size: 1rem;
  color: var(--text);
}

.eng-article__body hr {
  border: none;
  border-top: 1px solid var(--eng-line);
  margin: 2.5rem 0;
}

.eng-article__body pre.mermaid {
  display: flex;
  justify-content: center;
  background: rgba(0, 0, 0, 0.18);
}

/* ── Author bio ──────────────────────────────────────────────── */
.eng-author {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  margin-top: 3rem;
  padding: 1.25rem;
  border: 1px solid var(--eng-line);
  border-radius: var(--radius-m);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
}

.eng-author__copy {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.eng-author__name {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
  margin: 0;
}

.eng-author__role {
  font-family: var(--eng-mono);
  font-size: 0.75rem;
  color: var(--eng-muted);
  margin: 0;
}

.eng-author__bio {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--eng-muted);
  margin: 0.4rem 0 0;
  max-width: 55ch;
}

/* ── Related posts ───────────────────────────────────────────── */
.eng-related {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--eng-line);
}

.eng-related__title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 1rem;
}

.eng-related__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.eng-related__list a {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--eng-line);
  border-radius: 12px;
  text-decoration: none;
  background: rgba(255, 255, 255, 0.03);
  transition: border-color 0.15s, background 0.15s;
}

.eng-related__list a:hover, .eng-related__list a:focus-visible {
  border-color: var(--eng-line-strong);
  background: rgba(255, 255, 255, 0.06);
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.eng-related__list h4 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin: 0;
}

.eng-related__list span {
  font-family: var(--eng-mono);
  font-size: 0.72rem;
  color: var(--eng-muted);
}

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 640px) {
  .eng-article {
    padding: 2rem 0 3rem;
  }
  .eng-article__meta {
    gap: 0.75rem;
  }
  .eng-author {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}

/* ── Tables (literature) ─────────────────────────────────────── */
.eng-article__body table code {
  white-space: nowrap;
}