/* ============================================================
   ixprt — blog styles
   Layout primitives for /blog/, /blog/<slug>/, /blog/authors/<id>/.
   Reuses the base color tokens (--accent, --text, --border, --bg-2)
   and the --color-* aliases added during Phase 1.
   ============================================================ */

/* Main + container layout for blog pages. Blog templates only link
   styles.css + styles-blog.css (not styles-products.css), so the
   container-centering + main-padding rules need to live here too. */
.blog-post main,
.blog-index main,
.blog-author-page main { padding: 0 24px; }
.blog-post .container,
.blog-index .container,
.blog-author-page .container { max-width: 1100px; margin: 0 auto; }

/* ----- Hero section (index + author pages) ----- */
.blog-hero {
  padding: 56px 0 32px;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}
.blog-index-h1 {
  font-size: clamp(36px, 4.8vw, 56px);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.05;
  margin: 0 0 16px 0;
  color: var(--color-text);
}
.blog-index-h1 em { color: var(--color-accent); font-style: normal; }
.blog-index-sub {
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-muted);
  margin: 0 0 28px 0;
  max-width: 640px;
}

/* ----- Tag chips ----- */
.blog-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 24px 0 0; }
.blog-tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  padding: 6px 12px;
  cursor: pointer;
  transition: color 180ms ease, border-color 180ms ease, background 180ms ease;
}
.blog-tag:hover { color: var(--color-accent); border-color: rgba(61, 177, 232, 0.4); }
.blog-tag.is-active { color: var(--color-accent); border-color: rgba(61, 177, 232, 0.6); background: rgba(61, 177, 232, 0.06); }

/* ----- Index card list ----- */
.blog-card-list { list-style: none; padding: 0; margin: 32px auto 80px; display: flex; flex-direction: column; max-width: 760px; }
.blog-card { margin: 0; }
.blog-card-link {
  display: block;
  padding: 24px 0 28px;
  border-top: 1px solid var(--color-border);
  text-decoration: none;
  color: inherit;
  transition: padding 180ms ease;
}
.blog-card:last-child .blog-card-link { border-bottom: 1px solid var(--color-border); }
.blog-card-link:hover { padding-left: 6px; }
.blog-card-rule { width: 32px; height: 1px; background: var(--color-accent); margin-bottom: 14px; }
.blog-card-meta {
  display: flex;
  gap: 18px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.blog-card-type { color: var(--color-accent); }
.blog-card-title {
  font-size: clamp(20px, 2.2vw, 26px);
  font-weight: 600;
  letter-spacing: -0.022em;
  line-height: 1.18;
  margin: 0 0 8px 0;
  color: var(--color-text);
  transition: color 180ms ease;
}
.blog-card-link:hover .blog-card-title { color: var(--color-accent); }
.blog-card-excerpt { font-size: 15px; line-height: 1.6; color: var(--color-text-muted); margin: 0 0 12px 0; max-width: 720px; }
.blog-card-cta { font-family: var(--mono); font-size: 10px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--color-accent); }

/* ----- Post page layout ----- */
.blog-article { padding: 48px 0 96px; }
.blog-h1 {
  font-size: clamp(34px, 4.4vw, 52px);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.06;
  margin: 0 0 16px 0;
  color: var(--color-text);
}
.blog-h1 em { color: var(--color-accent); font-style: normal; }
.blog-dek {
  font-size: 18px;
  line-height: 1.55;
  color: var(--color-text-muted);
  margin: 0 0 22px 0;
  max-width: 720px;
}
.blog-meta {
  display: flex;
  gap: 20px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding-bottom: 18px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.blog-meta-author { color: var(--color-accent); text-decoration: none; }
.blog-meta-author:hover { text-decoration: underline; }
.blog-meta time { color: var(--color-text-muted); }

/* ----- Two-column grid: body + TOC sidebar (centered) ----- */
.blog-grid { display: grid; grid-template-columns: 720px 200px; gap: 56px; align-items: start; justify-content: center; }
@media (max-width: 1000px) {
  .blog-grid { grid-template-columns: minmax(0, 720px); justify-content: center; }
  .blog-toc { display: none; }
}

/* ----- TL;DR block ----- */
.blog-tldr {
  background: rgba(61, 177, 232, 0.04);
  border: 1px solid rgba(61, 177, 232, 0.22);
  border-radius: 4px;
  padding: 18px 22px;
  margin: 0 0 32px 0;
}
.blog-tldr-cap {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 10px;
}
.blog-tldr ul { list-style: none; padding: 0; margin: 0; }
.blog-tldr li {
  font-size: 14px;
  line-height: 1.55;
  color: var(--color-text);
  padding: 4px 0 4px 16px;
  position: relative;
}
.blog-tldr li::before { content: '→'; color: var(--color-accent); position: absolute; left: 0; font-family: var(--mono); }

/* ----- Body prose ----- */
.blog-body { font-size: 16px; line-height: 1.7; color: var(--color-text); max-width: 720px; }
.blog-body h2 {
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 600;
  letter-spacing: -0.022em;
  margin: 56px 0 14px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  color: var(--color-text);
}
.blog-body h3 {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.012em;
  margin: 32px 0 10px;
  color: var(--color-text);
}
.blog-body p { margin: 0 0 18px 0; }
.blog-body strong { color: var(--color-text); font-weight: 600; }
.blog-body em { color: var(--color-text); font-style: italic; }
.blog-body a { color: var(--color-accent); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.blog-body a:hover { color: var(--accent-soft); }
.blog-body ul, .blog-body ol { margin: 0 0 18px 0; padding-left: 24px; color: var(--color-text-muted); }
.blog-body li { margin: 6px 0; line-height: 1.6; }
.blog-body code {
  font-family: var(--mono);
  font-size: 14px;
  background: rgba(61, 177, 232, 0.08);
  color: var(--color-accent);
  padding: 1px 5px;
  border-radius: 2px;
}
.blog-body pre {
  background: rgba(12, 16, 24, 0.7);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 16px 18px;
  overflow-x: auto;
  margin: 0 0 22px 0;
  font-size: 13.5px;
  line-height: 1.55;
}
.blog-body pre code { background: none; color: var(--color-text); padding: 0; font-size: inherit; }

/* Tables */
.blog-body table { width: 100%; border-collapse: collapse; margin: 18px 0 24px; font-size: 14.5px; }
.blog-body th {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  text-align: left;
  font-weight: 500;
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-border);
}
.blog-body td { padding: 12px 12px; border-bottom: 1px solid var(--color-border); color: var(--color-text); vertical-align: top; }
.blog-body td:first-child { color: var(--color-accent); font-family: var(--mono); font-size: 13px; }

/* Blockquotes */
.blog-body blockquote {
  border-left: 2px solid var(--color-accent);
  padding: 4px 0 4px 18px;
  margin: 22px 0;
  color: var(--color-text-muted);
  font-style: italic;
}

/* ----- FAQ block ----- */
.blog-faq {
  margin: 56px 0 0;
  padding: 24px 26px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: rgba(12, 16, 24, 0.5);
}
.blog-faq-cap {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}
.blog-faq-q { font-size: 16px; font-weight: 600; color: var(--color-text); margin: 14px 0 6px; }
.blog-faq-a { font-size: 15px; line-height: 1.65; color: var(--color-text-muted); margin: 0 0 12px 0; }

/* ----- Author bio card ----- */
.blog-author {
  margin: 32px 0 0;
  padding: 20px 22px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 18px;
  align-items: center;
}
.blog-author-mark {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, var(--color-accent) 0%, var(--accent-deep) 70%);
}
.blog-author-name { font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--color-accent); margin-bottom: 4px; }
.blog-author-name a { color: inherit; text-decoration: none; }
.blog-author-name a:hover { text-decoration: underline; }
.blog-author-bio { font-size: 14px; line-height: 1.55; color: var(--color-text-muted); margin: 0; }

/* ----- Related posts rail ----- */
.blog-related { margin: 40px 0 0; }
.blog-related-cap { font-family: var(--mono); font-size: 10px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--color-text-muted); margin-bottom: 14px; }
.blog-related-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; }
.blog-related-card {
  display: block;
  padding: 14px 16px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: rgba(12, 16, 24, 0.5);
  text-decoration: none;
  color: inherit;
  transition: border-color 180ms ease;
}
.blog-related-card:hover { border-color: rgba(61, 177, 232, 0.4); }
.blog-related-tag { font-family: var(--mono); font-size: 8px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--color-accent); margin-bottom: 6px; }
.blog-related-title { font-size: 14px; line-height: 1.35; color: var(--color-text); font-weight: 600; }

/* ----- Tail CTA ----- */
.blog-cta {
  margin: 40px 0 0;
  padding: 28px 30px;
  background: linear-gradient(180deg, rgba(61, 177, 232, 0.06) 0%, rgba(61, 177, 232, 0.02) 100%);
  border: 1px solid rgba(61, 177, 232, 0.25);
  border-radius: 6px;
}
.blog-cta-h { font-size: 20px; font-weight: 600; letter-spacing: -0.018em; margin: 0 0 8px 0; color: var(--color-text); }
.blog-cta-p { font-size: 14.5px; color: var(--color-text-muted); line-height: 1.55; margin: 0 0 14px 0; }
.blog-cta-link { font-family: var(--mono); font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--color-accent); text-decoration: none; }
.blog-cta-link:hover { color: var(--accent-soft); }

/* ----- TOC sidebar ----- */
.blog-toc {
  position: sticky;
  top: 24px;
  padding-left: 18px;
  border-left: 1px solid var(--color-border);
}
.blog-toc-cap { font-family: var(--mono); font-size: 9px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--color-text-muted); margin-bottom: 14px; }
.blog-toc a {
  display: block;
  font-size: 12.5px;
  color: var(--color-text-muted);
  text-decoration: none;
  padding: 6px 0;
  line-height: 1.4;
  transition: color 180ms ease;
}
.blog-toc a:hover { color: var(--color-text); }
.blog-toc a.active { color: var(--color-accent); font-weight: 500; }

/* ----- Author hero (on author profile pages) ----- */
.blog-author-hero { display: grid; grid-template-columns: 80px 1fr; gap: 22px; align-items: center; margin-top: 24px; }
.blog-author-hero-mark {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, var(--color-accent) 0%, var(--accent-deep) 70%);
}
.blog-author-role { font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--color-accent); margin: 4px 0 12px; }
.blog-author-longbio { font-size: 16px; line-height: 1.6; color: var(--color-text-muted); max-width: 720px; margin: 0; }
.blog-author-archive { margin: 56px auto 0; max-width: 760px; }
.blog-author-archive-h { font-size: 22px; font-weight: 600; letter-spacing: -0.022em; margin: 0 0 18px 0; color: var(--color-text); }
.blog-author-empty { font-size: 14px; color: var(--color-text-dim); padding: 18px 0; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0s !important; transition-duration: 0s !important; }
}