/* ═══════════════════════════════════════
   ChainLens Blog — extends core.css
   Dark theme, matching main site design
   ═══════════════════════════════════════ */

/* ── Blog Hero ── */
.blog-hero {
  text-align: center;
  padding: 3rem 1.25rem 1.5rem;
  max-width: 640px;
  margin: 0 auto;
}
.blog-hero h1 {
  font: 800 2rem/1.15 var(--sans);
  color: var(--t0);
  letter-spacing: -.5px;
  background: linear-gradient(135deg, var(--t0) 40%, var(--acc) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.blog-hero p {
  font: 400 .82rem/1.6 var(--sans);
  color: var(--t2);
  margin: .6rem auto 0;
  max-width: 480px;
}

/* ── Blog Grid ── */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  padding: 0 1.25rem 2rem;
  max-width: 960px;
  margin: 0 auto;
}

/* ── Blog Card ── */
.blog-card {
  background: var(--bg1);
  border: 1px solid var(--brd2);
  border-radius: 12px;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  transition: border-color .2s, transform .15s, box-shadow .2s;
  overflow: hidden;
}
.blog-card:hover {
  border-color: var(--acc);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(153, 69, 255, .08);
}
.blog-card-body {
  padding: 1.1rem 1.2rem 1rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.blog-card h2 {
  font: 600 .85rem/1.35 var(--sans);
  color: var(--t0);
  margin: 0 0 .4rem;
}
.blog-card:hover h2 { color: var(--acc); }
.blog-card p {
  font: 400 .7rem/1.55 var(--sans);
  color: var(--t3);
  flex: 1;
  margin: 0;
}
.blog-tag {
  font: 600 .52rem/1 var(--mono);
  color: var(--acc);
  text-transform: uppercase;
  letter-spacing: .6px;
  margin-bottom: .5rem;
  display: block;
}
.blog-card-meta {
  font: 400 .58rem/1 var(--mono);
  color: var(--t3);
  margin-top: .65rem;
  padding-top: .5rem;
  border-top: 1px solid var(--brd);
  display: flex;
  justify-content: space-between;
  opacity: .7;
}

/* ── Featured Card (pillar) ── */
.blog-card-featured {
  grid-column: 1 / -1;
  border-color: var(--acc);
  position: relative;
  flex-direction: row;
}
.blog-card-featured .blog-card-accent {
  width: 4px;
  background: linear-gradient(180deg, var(--acc), var(--grn));
  flex-shrink: 0;
}
.blog-card-featured h2 {
  font-size: 1rem;
  font-weight: 700;
}
.blog-card-featured p {
  font-size: .75rem;
}
.blog-card-featured .blog-tag {
  font-size: .55rem;
  color: var(--grn);
}

/* ── Blog CTA ── */
.blog-cta {
  text-align: center;
  padding: 2.5rem 1.25rem 1.5rem;
  max-width: 500px;
  margin: 0 auto;
}
.blog-cta h3 {
  font: 700 1rem/1.3 var(--sans);
  color: var(--t0);
  margin: 0 0 .4rem;
}
.blog-cta p {
  font: 400 .75rem/1.5 var(--sans);
  color: var(--t2);
  margin: 0 0 1rem;
}
.blog-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .6rem 1.5rem;
  background: var(--acc);
  color: #fff;
  border-radius: 8px;
  font: 600 .78rem/1 var(--sans);
  text-decoration: none;
  transition: opacity .15s, transform .1s;
}
.blog-cta-btn:hover { opacity: .9; transform: translateY(-1px); color: #fff; }

/* ═══════════════════════════════════════
   ARTICLE PAGE STYLES
   ═══════════════════════════════════════ */

.article {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}
.article-back {
  font: 500 .72rem/1 var(--sans);
  color: var(--t2);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  margin-bottom: 1.5rem;
  transition: color .15s;
}
.article-back:hover { color: var(--acc); }
.article-cat {
  font: 600 .6rem/1 var(--mono);
  color: var(--acc);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: .5rem;
}
.article-title {
  font: 800 1.6rem/1.2 var(--sans);
  color: var(--t0);
  margin-bottom: .5rem;
  letter-spacing: -.3px;
}
.article-meta {
  font: 400 .65rem/1 var(--mono);
  color: var(--t3);
  margin-bottom: 1.5rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.article-meta i { font-size: .6rem; margin-right: 2px; }

/* ── Article Body ── */
.article-body {
  font: 400 .88rem/1.75 var(--sans);
  color: var(--t1);
}
.article-body h2 {
  font: 700 1.15rem/1.3 var(--sans);
  color: var(--t0);
  margin: 2.5rem 0 .75rem;
  padding-bottom: .4rem;
  border-bottom: 1px solid var(--brd2);
}
.article-body h3 {
  font: 600 .95rem/1.3 var(--sans);
  color: var(--t0);
  margin: 1.5rem 0 .5rem;
}
.article-body p { margin-bottom: 1rem; }
.article-body ul, .article-body ol {
  margin: .5rem 0 1.25rem 1.25rem;
}
.article-body li {
  margin-bottom: .4rem;
  line-height: 1.65;
}
.article-body a {
  color: var(--acc);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color .15s;
}
.article-body a:hover { color: var(--t0); }
.article-body strong { color: var(--t0); font-weight: 600; }
.article-body code {
  font: 400 .82rem/1 var(--mono);
  background: var(--bg2);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--acc);
}

/* ── Callout Boxes ── */
.callout {
  padding: .85rem 1rem;
  border-radius: 8px;
  margin: 1.25rem 0;
  font-size: .82rem;
  line-height: 1.6;
}
.callout-danger { background: rgba(239,68,68,.06); border-left: 3px solid var(--red); }
.callout-warn { background: rgba(249,115,22,.05); border-left: 3px solid var(--org); }
.callout-info { background: rgba(153,69,255,.05); border-left: 3px solid var(--acc); }
.callout-good { background: rgba(34,197,94,.05); border-left: 3px solid var(--grn); }
.callout strong { display: block; margin-bottom: .3rem; color: var(--t0); }

/* ── Tool CTA ── */
.tool-cta {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .9rem 1.1rem;
  background: var(--bg2);
  border: 1px solid var(--acc);
  border-radius: 10px;
  margin: 1.5rem 0;
  text-decoration: none;
  transition: background .15s, box-shadow .15s;
}
.tool-cta:hover {
  background: var(--bg3);
  box-shadow: 0 4px 16px rgba(153,69,255,.1);
}
.tool-cta-icon { font-size: 1.5rem; color: var(--acc); flex-shrink: 0; }
.tool-cta-text { flex: 1; }
.tool-cta-text strong {
  font: 600 .8rem/1.2 var(--sans);
  color: var(--t0);
  display: block;
}
.tool-cta-text span {
  font: 400 .68rem/1.3 var(--sans);
  color: var(--t2);
}

/* ── Article Share ── */
.article-share {
  display: flex;
  gap: .5rem;
  align-items: center;
  margin: 2rem 0;
  padding: .8rem 1rem;
  background: var(--bg2);
  border-radius: 10px;
  flex-wrap: wrap;
}
.article-share span { font: 500 .72rem/1 var(--sans); color: var(--t3); }
.article-share a {
  font: 500 .68rem/1 var(--sans);
  color: var(--acc);
  background: var(--bg3);
  padding: .35rem .65rem;
  border-radius: 6px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: .25rem;
  transition: all .15s;
}
.article-share a:hover { color: #fff; background: var(--acc); }

/* ── Related Articles ── */
.related {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--brd2);
}
.related h3 {
  font: 700 .85rem/1 var(--sans);
  color: var(--t0);
  margin-bottom: 1rem;
}
.related-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
.related-card {
  padding: .75rem;
  background: var(--bg1);
  border: 1px solid var(--brd2);
  border-radius: 8px;
  text-decoration: none;
  transition: border-color .15s;
}
.related-card:hover { border-color: var(--acc); }
.related-card strong {
  font: 600 .72rem/1.3 var(--sans);
  color: var(--t0);
  display: block;
  margin-bottom: .2rem;
}
.related-card span { font: 400 .6rem/1.3 var(--sans); color: var(--t3); }

/* ── FAQ Schema Section ── */
.faq-section { margin-top: 2rem; }
.faq-item { margin-bottom: 1.25rem; }
.faq-item h3 {
  font: 600 .85rem/1.35 var(--sans);
  color: var(--t0);
  margin-bottom: .3rem;
}
.faq-item p {
  font: 400 .78rem/1.6 var(--sans);
  color: var(--t2);
  padding-left: .5rem;
  border-left: 2px solid var(--brd2);
}

/* ── Responsive ── */
@media (max-width: 640px) {
  .blog-hero h1 { font-size: 1.5rem; }
  .blog-grid { grid-template-columns: 1fr; padding: 0 .75rem 1.5rem; }
  .blog-card-featured { flex-direction: column; }
  .blog-card-featured .blog-card-accent { width: 100%; height: 3px; }
  .article-title { font-size: 1.25rem; }
  .article { padding: 1.5rem 1rem 2rem; }
  .related-grid { grid-template-columns: 1fr; }
}
@media (min-width: 641px) and (max-width: 900px) {
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
}