/* ===========================
   DefineDebug — Blog & Article System
   Extends tokens from style.css — same --bg/--ink/--accent vars
   =========================== */

/* ---------- SHARED: breadcrumb / back link ---------- */
.blog-crumb {
  max-width: 780px;
  margin: 0 auto;
  padding: calc(var(--nav-h) + 48px) 24px 0;
}

.blog-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
  transition: color .25s, gap .25s;
}

.blog-back:hover {
  color: var(--ink);
  gap: 12px;
}

/* ================================================
   BLOG INDEX PAGE
   ================================================ */
.blog-index-hero {
  max-width: 780px;
  margin: 0 auto;
  padding: 28px 24px 56px;
  text-align: left;
}

.blog-index-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}

.blog-index-eyebrow::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-light);
}

.blog-index-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(34px, 5.5vw, 56px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -.02em;
  color: var(--ink);
  max-width: 14ch;
}

.blog-index-hero p {
  margin-top: 18px;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  color: var(--muted);
  max-width: 52ch;
}

/* Featured post */
.blog-featured {
  max-width: 1160px;
  margin: 0 auto 64px;
  padding: 0 24px;
}

.blog-featured-card {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 0;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  text-align: left;
}

.blog-featured-visual {
  position: relative;
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background:
    radial-gradient(120% 140% at 15% 15%, rgba(77, 163, 255, .35), transparent 55%),
    radial-gradient(120% 140% at 85% 85%, rgba(124, 107, 255, .35), transparent 55%),
    var(--dark);
}

.blog-featured-visual .bfv-mark {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .55);
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 999px;
  padding: 8px 18px;
  backdrop-filter: blur(6px);
}

.blog-featured-body {
  padding: 44px 44px 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.blog-featured-tag {
  align-self: flex-start;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-light);
  border: 1px solid var(--accent-border);
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 18px;
}

.blog-featured-title {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--ink);
  margin-bottom: 14px;
}

.blog-featured-excerpt {
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--muted);
  margin-bottom: 24px;
}

.blog-featured-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13.5px;
  color: var(--muted2);
  margin-bottom: 22px;
}

.blog-featured-meta span:not(:last-child)::after {
  content: '·';
  margin-left: 14px;
  color: var(--border);
}

.blog-featured-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 14.5px;
  color: var(--ink);
}

.blog-featured-link .arrow {
  transition: transform .25s;
}

.blog-featured-card:hover .blog-featured-link .arrow {
  transform: translateX(5px);
}

/* Grid of remaining posts */
.blog-index-grid-wrap {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px 100px;
}

.blog-index-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.blog-index-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .35s cubic-bezier(.2,.8,.2,1), box-shadow .35s;
}

.blog-index-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.blog-index-visual {
  height: 150px;
  position: relative;
}

.blog-index-visual.bg1 { background: linear-gradient(135deg, #4DA3FF, #7C6BFF); }
.blog-index-visual.bg2 { background: linear-gradient(135deg, #FF8A1E, #FF5C7A); }
.blog-index-visual.bg3 { background: linear-gradient(135deg, #21C87A, #4DA3FF); }

.blog-index-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.35) 1px, transparent 1px);
  background-size: 14px 14px;
  opacity: .5;
}

.blog-index-card-body {
  padding: 22px 22px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.blog-index-tag {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}

.blog-index-card-title {
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink);
  margin-bottom: 20px;
  flex: 1;
}

.blog-index-card-meta {
  display: flex;
  justify-content: space-between;
  font-size: 12.5px;
  color: var(--muted2);
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* Newsletter / subscribe strip */
.blog-subscribe {
  max-width: 1160px;
  margin: 0 auto 100px;
  padding: 0 24px;
}

.blog-subscribe-inner {
  background: var(--dark);
  border-radius: var(--radius-lg);
  padding: 52px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  position: relative;
  overflow: hidden;
}

.blog-subscribe-inner::before {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(77,163,255,.25), transparent 70%);
  top: -150px;
  right: -100px;
}

.blog-subscribe-copy h3 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 8px;
  position: relative;
}

.blog-subscribe-copy p {
  font-family: var(--font-body);
  font-size: 14.5px;
  color: rgba(255,255,255,.6);
  position: relative;
}

/* ================================================
   ARTICLE PAGE
   ================================================ */
.article-hero {
  max-width: 780px;
  margin: 0 auto;
  padding: 20px 24px 40px;
}

.article-tag {
  display: inline-block;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-light);
  border: 1px solid var(--accent-border);
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 22px;
}

.article-title {
  font-family: var(--font-display);
  font-size: clamp(30px, 5vw, 46px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -.02em;
  color: var(--ink);
  margin-bottom: 20px;
}

.article-dek {
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.6;
  color: var(--muted);
  max-width: 62ch;
  margin-bottom: 28px;
}

.article-meta-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.article-meta-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  border: 2px solid var(--white);
  box-shadow: 0 0 0 1px var(--border);
}

.article-meta-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-meta-text .name {
  font-size: 14.5px;
  font-weight: 700;
  color: var(--ink);
}

.article-meta-text .sub {
  font-size: 13px;
  color: var(--muted2);
  margin-top: 2px;
}

.article-meta-text .sub span:not(:last-child)::after {
  content: '·';
  margin: 0 8px;
  color: var(--border);
}

/* cover visual */
.article-cover {
  max-width: 1000px;
  margin: 0 auto 8px;
  padding: 0 24px;
}

.article-cover-inner {
  height: min(46vw, 420px);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.article-cover-inner::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.28) 1px, transparent 1px);
  background-size: 22px 22px;
  mix-blend-mode: overlay;
}

.article-cover-glyph {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(48px, 8vw, 110px);
  color: rgba(255,255,255,.92);
  letter-spacing: -.03em;
  position: relative;
  z-index: 1;
  text-align: center;
  line-height: 1;
}

.article-cover-glyph small {
  display: block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255,255,255,.65);
  margin-top: 14px;
}

/* Layout: body + sticky TOC */
.article-layout {
  max-width: 1080px;
  margin: 56px auto 0;
  padding: 0 24px 40px;
  display: grid;
  grid-template-columns: 210px 1fr;
  gap: 56px;
  align-items: start;
}

.article-toc {
  position: sticky;
  top: calc(var(--nav-h) + 32px);
}

.article-toc-label {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted2);
  margin-bottom: 14px;
}

.article-toc ol {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-left: 2px solid var(--border);
}

.article-toc a {
  display: block;
  padding: 3px 0 3px 16px;
  font-size: 13.5px;
  line-height: 1.4;
  color: var(--muted);
  border-left: 2px solid transparent;
  margin-left: -2px;
  transition: color .2s, border-color .2s;
}

.article-toc a:hover {
  color: var(--ink);
}

.article-toc a.active {
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 600;
}

.article-share {
  display: flex;
  gap: 10px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.article-share a {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--muted);
  transition: all .2s;
}

.article-share a:hover {
  border-color: var(--ink);
  color: var(--ink);
  transform: translateY(-2px);
}

/* Article body typography */
.article-body {
  max-width: 680px;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  color: var(--ink2);
}

.article-body h2 {
  font-family: var(--font-display);
  font-size: 27px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--ink);
  margin: 52px 0 18px;
  scroll-margin-top: calc(var(--nav-h) + 24px);
}

.article-body h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
  margin: 34px 0 14px;
  scroll-margin-top: calc(var(--nav-h) + 24px);
}

.article-body p {
  margin-bottom: 20px;
}

.article-body ul,
.article-body ol {
  margin: 0 0 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.article-body li {
  padding-left: 4px;
}

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

.article-lede {
  font-size: 19px;
  color: var(--ink);
  font-weight: 500;
}

/* Pull quote */
.article-quote {
  margin: 40px 0;
  padding: 6px 0 6px 28px;
  border-left: 3px solid var(--accent);
}

.article-quote p {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
  letter-spacing: -.01em;
  margin: 0;
}

.article-quote cite {
  display: block;
  margin-top: 10px;
  font-family: var(--font-body);
  font-style: normal;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--muted);
}

/* Callout box */
.article-callout {
  margin: 32px 0;
  padding: 24px 26px;
  border-radius: var(--radius);
  background: var(--accent-light);
  border: 1px solid var(--accent-border);
  display: flex;
  gap: 16px;
}

.article-callout .icon {
  font-size: 20px;
  line-height: 1;
  flex-shrink: 0;
}

.article-callout p {
  margin: 0;
  font-size: 15px;
  color: var(--ink2);
}

.article-callout strong {
  display: block;
  font-family: var(--font-display);
  font-size: 14.5px;
  color: var(--ink);
  margin-bottom: 4px;
}

/* Comparison table */
.article-table-wrap {
  margin: 32px 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
}

.article-table th {
  text-align: left;
  font-family: var(--font-display);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--muted);
  background: var(--bg);
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}

.article-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  color: var(--ink2);
  vertical-align: top;
}

.article-table tr:last-child td {
  border-bottom: none;
}

.article-table td:first-child {
  font-weight: 700;
  color: var(--ink);
  white-space: nowrap;
}

.article-table .yes { color: var(--accent3); font-weight: 700; }
.article-table .no { color: var(--muted2); }

/* Stat trio inline in article */
.article-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 32px 0;
}

.article-stat {
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: center;
}

.article-stat .num {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 800;
  color: var(--accent);
}

.article-stat .lbl {
  font-size: 12px;
  color: var(--muted);
  margin-top: 4px;
}

/* Mid-article CTA */
.article-cta-block {
  margin: 48px 0;
  padding: 36px;
  border-radius: var(--radius-lg);
  background: var(--dark);
  position: relative;
  overflow: hidden;
  text-align: left;
}

.article-cta-block::before {
  content: '';
  position: absolute;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(77,163,255,.3), transparent 70%);
  top: -100px;
  right: -60px;
}

.article-cta-block h4 {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 8px;
  position: relative;
}

.article-cta-block p {
  font-family: var(--font-body);
  font-size: 14.5px;
  color: rgba(255,255,255,.6);
  margin-bottom: 20px;
  max-width: 46ch;
  position: relative;
}

/* Author card, end of article */
.article-author-card {
  max-width: 680px;
  margin: 56px auto 0;
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  gap: 18px;
  align-items: flex-start;
}

.article-author-card .aac-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
}

.article-author-card .aac-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-author-card .aac-name {
  font-family: var(--font-display);
  font-size: 15.5px;
  font-weight: 700;
  color: var(--ink);
}

.article-author-card .aac-role {
  font-size: 13px;
  color: var(--accent);
  font-weight: 600;
  margin: 2px 0 8px;
}

.article-author-card .aac-bio {
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}

/* Related posts */
.article-related {
  max-width: 1000px;
  margin: 80px auto 0;
  padding: 0 24px 100px;
}

.article-related-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted2);
  margin-bottom: 22px;
  text-align: center;
}

.article-related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

/* Reveal animation reuse (.rv / .visible defined in style.css) */

/* ---------- RESPONSIVE ---------- */
@media (max-width: 900px) {
  .blog-featured-card { grid-template-columns: 1fr; }
  .blog-featured-visual { min-height: 220px; }
  .blog-index-grid { grid-template-columns: 1fr 1fr; }
  .article-layout { grid-template-columns: 1fr; }
  .article-toc { position: static; margin-bottom: 8px; order: 2; }
  .article-toc ol { flex-direction: row; flex-wrap: wrap; border-left: none; gap: 8px; }
  .article-toc a { border: 1px solid var(--border); border-radius: 999px; padding: 6px 14px; margin-left: 0; }
  .article-toc a.active { background: var(--accent-light); }
  .article-share { display: none; }
  .article-related-grid { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .blog-index-grid { grid-template-columns: 1fr; }
  .blog-subscribe-inner { flex-direction: column; align-items: flex-start; padding: 36px 26px; }
  .article-stats { grid-template-columns: 1fr; }
  .article-body { font-size: 16px; }
  .article-body h2 { font-size: 23px; }
}