/* ═══════════════════════════════════════════════════════════
   SIGNAASAT - blog-detail.css  (v6)
   Single-article page. Built on site.css tokens only.
   ═══════════════════════════════════════════════════════════ */

/* ─── hero meta row ─── */
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  margin-top: clamp(24px, 3vw, 36px);
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 13.5px;
  color: var(--ink-3);
}
.article-meta .article-author { color: var(--ink); font-weight: 600; }
.article-meta .article-role { color: var(--ink-2); }
.article-meta .meta-sep { color: var(--line-2); }

/* ─── article section frame ─── */
.article-section { padding: var(--sy) 0; }
.article-section .prose { margin-top: clamp(36px, 5vw, 56px); }

/* ─── hero figure: flat bordered block, no gradients ─── */
.article-figure {
  margin: 0 auto;
  max-width: 880px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--bg-2);
  overflow: hidden;
}
.article-section .prose { margin-left: auto; margin-right: auto; }
.figure-chart {
  display: block;
  width: 100%;
  height: auto;
  color: var(--ink-2);
  padding: 18px 18px 4px;
}
.fig-area { fill: var(--accent); fill-opacity: 0.07; }
.fig-line {
  fill: none;
  stroke: var(--accent);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}
.fig-line.dim {
  stroke: var(--ink-3);
  stroke-width: 1.6;
  stroke-dasharray: 7 5;
}
.fig-dot { fill: var(--accent); }
.fig-callout {
  fill: var(--ink);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.fig-label text {
  fill: var(--ink-3);
  font-size: 10px;
  letter-spacing: 0.02em;
}

.figure-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
}
.figure-stat {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 16px clamp(16px, 2.4vw, 28px);
  border-left: 1px solid var(--line);
}
.figure-stat:first-child { border-left: none; }
.fs-l {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.fs-v {
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--ink);
}

/* ─── callout (page-specific) ─── */
.callout {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin: 28px 0;
  padding: 22px 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 2px solid var(--ink-3);
  border-radius: var(--r);
}
.callout-accent { border-left-color: var(--accent); }
.callout-icon {
  flex-shrink: 0;
  margin-top: 1px;
  color: var(--ink-2);
}
.callout-accent .callout-icon { color: var(--accent); }
.callout-icon i, .callout-icon .lucide { width: 18px; height: 18px; }
.callout-title {
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: -0.018em;
  color: var(--ink);
  margin-bottom: 6px;
}
.callout-body {
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink-2);
  margin: 0;
}

/* ─── article foot: tags + share ─── */
.article-foot {
  max-width: 70ch;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: clamp(40px, 5vw, 56px);
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.article-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.article-tag {
  padding: 5px 13px;
  border: 1px solid var(--line);
  border-radius: 100px;
  font-size: 12.5px;
  color: var(--ink-2);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.article-tag:hover { color: var(--ink); border-color: var(--line-2); }

.article-share {
  display: flex;
  align-items: center;
  gap: 16px;
}
.share-label {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.share-link {
  font-size: 13.5px;
  color: var(--ink-2);
  position: relative;
  transition: color .16s var(--ease);
}
.share-link:hover { color: var(--ink); }

/* ─── back link ─── */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 36px;
  font-size: 14px;
  color: var(--ink-2);
  transition: color .16s var(--ease);
}
.back-link i, .back-link .lucide { width: 15px; height: 15px; }
.back-link:hover { color: var(--ink); }

/* ─── related ─── */
.related-section { padding: var(--sy) 0; border-top: 1px solid var(--line); }
.related-head { margin-bottom: clamp(26px, 3.2vw, 40px); }
.related-head .h2 { margin-top: 14px; }
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.related-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: clamp(170px, 16vw, 210px);
  padding: clamp(22px, 2.4vw, 30px) clamp(20px, 2vw, 26px);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: background .2s var(--ease);
}
.related-card:hover { background: var(--surface); }
.related-cat {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.related-title {
  font-size: clamp(17px, 1.7vw, 21px);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.25;
  color: var(--ink);
}
.related-go {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--ink-2);
  transition: color .2s var(--ease);
}
.related-go i, .related-go .lucide { width: 15px; height: 15px; }
.related-card:hover .related-go { color: var(--accent); }

/* ─── responsive ─── */
@media (max-width: 900px) {
  .related-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .article-foot { flex-direction: column; align-items: flex-start; }
  .figure-stats { grid-template-columns: 1fr; }
  .figure-stat { border-left: none; border-top: 1px solid var(--line); }
  .figure-stat:first-child { border-top: none; }
  .related-grid { grid-template-columns: 1fr; }
}