/* =========================================================
   article.css — Engineering Guide / blog reading layout
   Built on main.css tokens. Optimized for long-form reading.
   ========================================================= */

/* ---- Blog index (guide listing) ------------------------ */
.blog-index-wrap { padding: clamp(40px, 6vw, 72px) 0 64px; }

.blog-hero { margin-bottom: 36px; }
.blog-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.1;
  margin-bottom: 12px;
}
.blog-hero p {
  color: var(--muted);
  max-width: 60ch;
  line-height: 1.7;
  font-size: 1rem;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(300px, 100%), 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}
.blog-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px;
  background: var(--surface);
  text-decoration: none;
  color: var(--text);
  transition: background var(--t);
}
.blog-card:hover { background: var(--surface-hover); }
.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: .68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--muted);
}
.blog-card-cat { color: var(--primary); }
.blog-card-title {
  font-size: 1.08rem;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -.01em;
}
.blog-card-excerpt {
  font-size: .85rem;
  color: var(--muted);
  line-height: 1.6;
  flex: 1;
}
.blog-card-readmore {
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: .05em;
}

/* ---- Article page -------------------------------------- */
.article-wrap { padding: clamp(28px, 4vw, 48px) 0 64px; }

.article-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--muted);
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.article-breadcrumb a { color: var(--muted); text-decoration: none; transition: color var(--t); }
.article-breadcrumb a:hover { color: var(--primary); }
.article-breadcrumb-sep { color: var(--subtle); }

.article {
  max-width: 72ch;
  margin: 0 auto;
}

.article-header { margin-bottom: 40px; }
.article-eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--muted);
  margin-bottom: 16px;
}
.article-eyebrow .cat { color: var(--primary); }
.article-title {
  font-size: clamp(1.7rem, 3.8vw, 2.5rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -.02em;
  margin-bottom: 16px;
}
.article-standfirst {
  font-size: 1.12rem;
  line-height: 1.6;
  color: var(--muted);
  border-left: 2px solid var(--primary);
  padding-left: 18px;
}

/* ---- Body typography ----------------------------------- */
.article-body {
  font-size: 1.02rem;
  line-height: 1.8;
  color: #d7dce3;
  /* Justify with hyphenation for a documentation feel */
  text-align: justify;
  text-justify: inter-word;
  hyphens: auto;
  -webkit-hyphens: auto;
}
.article-body > * + * { margin-top: 1.1em; }

.article-body h2 {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -.01em;
  line-height: 1.25;
  color: var(--text);
  margin-top: 2.4em;
  padding-top: 1.4em;
  border-top: 1px solid var(--border);
  text-align: left;
  hyphens: manual;
}
.article-body h2:first-child { margin-top: 0; padding-top: 0; border-top: none; }
.article-body h3 {
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--text);
  margin-top: 1.8em;
  text-align: left;
  hyphens: manual;
}

.article-body a {
  color: var(--primary);
  text-decoration: none;
  border-bottom: 1px solid var(--primary-line);
  transition: border-color var(--t);
}
.article-body a:hover { border-bottom-color: var(--primary); }

.article-body strong { color: var(--text); font-weight: 700; }

.article-body ul,
.article-body ol {
  padding-left: 1.4em;
  text-align: left;
  hyphens: manual;
}
.article-body li { margin-top: .5em; line-height: 1.7; }
.article-body li::marker { color: var(--primary); }

.article-body code {
  font-family: var(--font-mono);
  font-size: .9em;
  background: var(--inset);
  border: 1px solid var(--border);
  padding: .1em .4em;
  color: var(--primary-hover);
}

/* Equation block */
.article-eq {
  font-family: var(--font-mono);
  font-size: 1rem;
  background: var(--inset);
  border: 1px solid var(--border);
  border-left: 2px solid var(--primary);
  padding: 16px 18px;
  text-align: left;
  overflow-x: auto;
  color: var(--text);
  letter-spacing: .01em;
}

/* Callout */
.article-note {
  background: var(--primary-dim);
  border: 1px solid var(--primary-line);
  border-left: 2px solid var(--primary);
  padding: 16px 18px;
  text-align: left;
  hyphens: manual;
  font-size: .96rem;
  line-height: 1.7;
  color: #d7dce3;
}
.article-note strong { color: var(--primary-hover); }

/* Tables */
.article-table-wrap { overflow-x: auto; }
.article-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: .9rem;
  text-align: left;
  hyphens: manual;
}
.article-body th,
.article-body td {
  border: 1px solid var(--border);
  padding: 9px 12px;
  text-align: left;
  vertical-align: top;
  line-height: 1.5;
}
.article-body th {
  background: var(--surface-2);
  font-family: var(--font-mono);
  font-size: .76rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .03em;
  color: var(--muted);
}
.article-body tbody tr:nth-child(even) { background: var(--surface); }

/* Key takeaway block */
.article-takeaway {
  margin-top: 2.4em;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  padding: 22px 24px;
  text-align: left;
  hyphens: manual;
}
.article-takeaway .label {
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--primary);
  margin-bottom: 10px;
}
.article-takeaway p { margin: 0; line-height: 1.7; color: var(--text); }

/* ---- Related sections ---------------------------------- */
.article-related {
  max-width: 72ch;
  margin: 48px auto 0;
}
.related-block + .related-block { margin-top: 28px; }
.related-block h2 {
  font-size: .82rem;
  font-family: var(--font-mono);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--muted);
  margin-bottom: 14px;
}
.related-links {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(220px, 100%), 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}
.related-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 14px 16px;
  background: var(--surface);
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
  font-size: .92rem;
  transition: background var(--t);
}
.related-links a:hover { background: var(--surface-hover); color: var(--primary); }
.related-links .r-badge {
  font-family: var(--font-mono);
  font-size: .64rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .03em;
  color: var(--muted);
  border: 1px solid var(--border-strong);
  padding: 2px 6px;
  white-space: nowrap;
}

/* ---- Mobile: drop justify (avoids rivers / bad spacing) - */
@media (max-width: 640px) {
  .article-body {
    text-align: left;
    hyphens: manual;
    font-size: 1rem;
    line-height: 1.75;
  }
  .article { max-width: 100%; }
}
</content>