/* ============ BLOG (index + article) — builds on css/styles.css theme tokens ============ */
body { display: flex; flex-direction: column; min-height: 100vh; }
.blog-main { flex: 1; padding: 52px 0 72px; }

/* ---- category identity tints ----
 * Each category gets a --cat / --cat-soft pair used by pills and cover art,
 * same pattern as the cx-c-* classes on the scan report. */
.cat-research    { --cat: #FF4D7C; --cat-soft: rgba(253, 29, 96, 0.13); }
.cat-guides      { --cat: #7D95FF; --cat-soft: rgba(125, 149, 255, 0.13); }
.cat-engineering { --cat: #4DD89C; --cat-soft: rgba(77, 216, 156, 0.12); }
.cat-product     { --cat: #FFA807; --cat-soft: rgba(255, 168, 7, 0.13); }

/* ---- hero ---- */
.blog-hero { text-align: center; max-width: 680px; margin: 0 auto 36px; }
.blog-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 11.5px; font-weight: 800;
  text-transform: uppercase; letter-spacing: 0.16em;
  color: var(--brand-bright);
  padding: 6px 14px; border-radius: 999px;
  background: var(--brand-dim);
  border: 1px solid rgba(255, 168, 7, 0.26);
  margin-bottom: 18px;
}
.blog-eyebrow .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--brand-bright);
  box-shadow: 0 0 10px var(--brand-bright);
}
.blog-title {
  font-size: 46px; font-weight: 800;
  letter-spacing: -0.035em; line-height: 1.05;
  color: var(--text);
}
.blog-title .grad {
  background: var(--accent-gradient);
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.blog-sub {
  margin-top: 14px;
  font-size: 15.5px; color: var(--text-muted); line-height: 1.6;
}

/* ---- category filter chips ---- */
.blog-cats {
  display: flex; justify-content: center; flex-wrap: wrap;
  gap: 8px; margin-top: 26px;
}
.blog-cat-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 16px; border-radius: 100px;
  font-size: 13px; font-weight: 700;
  color: var(--text-muted);
  background: var(--surface);
  border: 1px solid var(--border);
  transition: 160ms;
}
.blog-cat-btn:hover { color: var(--text); border-color: var(--border-strong); background: var(--surface-2); }
.blog-cat-btn.active {
  background: var(--accent-gradient);
  background-size: 200% auto;
  color: #fff; border-color: transparent;
  box-shadow: 0 10px 24px -12px rgba(253, 29, 96, 0.75);
}
.blog-cat-btn .count {
  font-family: var(--mono); font-size: 11px; font-weight: 600;
  padding: 1px 7px; border-radius: 8px;
  background: rgba(255, 255, 255, 0.07); color: var(--text-subtle);
}
.blog-cat-btn.active .count { background: rgba(0, 0, 0, 0.22); color: #fff; }

/* ---- cover art (CSS-generated: grid + category glow + icon) ---- */
.post-cover {
  position: relative; overflow: hidden;
  display: grid; place-items: center;
  background:
    linear-gradient(rgba(255, 255, 255, 0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.022) 1px, transparent 1px),
    radial-gradient(120% 140% at 50% -30%, var(--cat-soft, var(--brand-dim)), transparent 62%),
    var(--bg-soft);
  background-size: 26px 26px, 26px 26px, auto, auto;
}
.post-cover::after {
  /* bottom shade so the card body fuses with the art */
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(6, 6, 6, 0.5) 100%);
  pointer-events: none;
}
.post-cover-ico {
  width: 62px; height: 62px; border-radius: 17px;
  display: grid; place-items: center;
  background: var(--cat-soft, var(--brand-dim));
  color: var(--cat, var(--brand-bright));
  border: 1px solid var(--cat-soft, var(--brand-dim));
  box-shadow: 0 0 42px -8px var(--cat, var(--brand));
  z-index: 1;
  transition: transform 220ms ease;
}

/* ---- featured (latest) post ---- */
.feat-post {
  position: relative;
  display: grid; grid-template-columns: 6fr 5fr;
  max-width: 1080px; margin: 0 auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: border-color 200ms ease, transform 200ms ease, box-shadow 200ms ease;
}
.feat-post::before {
  content: ""; position: absolute;
  top: 0; left: 0; right: 0; height: 3px;
  background: var(--accent-gradient);
  background-size: 200% auto;
  z-index: 2;
}
.feat-post:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
  box-shadow: 0 30px 60px -32px rgba(253, 29, 96, 0.35);
}
.feat-post:hover .post-cover-ico { transform: translateY(-3px) scale(1.05); }
.feat-body {
  padding: 32px 36px 28px;
  display: flex; flex-direction: column; min-width: 0;
}
.feat-badges { display: flex; align-items: center; gap: 8px; margin-bottom: 18px; }
.feat-flag {
  padding: 5px 12px; border-radius: 999px;
  background: var(--accent-gradient);
  background-size: 200% auto;
  color: #fff;
  font-size: 10.5px; font-weight: 800;
  text-transform: uppercase; letter-spacing: 0.1em;
  box-shadow: 0 10px 24px -10px rgba(253, 29, 96, 0.7);
}
.feat-title {
  font-size: 29px; font-weight: 800;
  color: var(--text);
  letter-spacing: -0.025em; line-height: 1.15;
  margin-bottom: 12px;
}
.feat-post:hover .feat-title {
  background: var(--accent-gradient);
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.feat-excerpt {
  font-size: 14.5px; color: var(--text-muted);
  line-height: 1.65; margin-bottom: 24px;
}
.feat-cover { border-left: 1px solid var(--border-faint); min-height: 270px; }
.feat-read {
  margin-left: auto;
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 700; color: var(--brand-bright);
  white-space: nowrap;
}
.feat-read svg { transition: transform 180ms ease; }
.feat-post:hover .feat-read svg { transform: translateX(3px); }

/* ---- category pill (shared by cards + article header) ---- */
.post-cat {
  display: inline-flex; align-items: center;
  align-self: flex-start;
  padding: 4px 11px; border-radius: 6px;
  font-size: 11px; font-family: var(--mono); font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.06em;
  background: var(--cat-soft, var(--surface-2));
  color: var(--cat, var(--text-muted));
}

/* ---- post grid + cards ---- */
.posts-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 20px; align-items: stretch;
  max-width: 1080px; margin: 22px auto 0;
}
.post-card {
  display: flex; flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: border-color 200ms ease, transform 200ms ease, box-shadow 200ms ease;
}
.post-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-4px);
  box-shadow: 0 26px 54px -30px rgba(0, 0, 0, 0.85);
}
.post-card:hover .post-cover-ico { transform: translateY(-3px) scale(1.05); }
.post-card .post-cover { height: 148px; border-bottom: 1px solid var(--border-faint); }
.post-card .post-cover-ico { width: 50px; height: 50px; border-radius: 14px; }
.post-card-body {
  flex: 1; min-width: 0;
  display: flex; flex-direction: column;
  padding: 20px 22px 22px;
}
.post-title {
  font-size: 16.5px; font-weight: 700;
  color: var(--text);
  letter-spacing: -0.015em; line-height: 1.35;
  margin: 11px 0 8px;
  transition: color 160ms;
}
.post-card:hover .post-title { color: var(--brand-bright); }
.post-excerpt {
  font-size: 13px; color: var(--text-muted); line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 18px;
}

/* ---- author / date / read-time meta row ---- */
.post-meta {
  margin-top: auto;
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  font-size: 12.5px; color: var(--text-subtle);
}
.post-meta .name { color: var(--text-muted); font-weight: 600; }
.post-meta .dot { opacity: 0.55; }
.post-ava {
  width: 26px; height: 26px; border-radius: 50%; flex-shrink: 0;
  background: var(--accent-gradient);
  background-size: 200% auto;
  display: grid; place-items: center;
  color: #fff; font-weight: 700; font-size: 10px;
}
.post-ava.lg { width: 40px; height: 40px; font-size: 14px; }

/* ---- filter empty state ---- */
.blog-empty {
  display: flex; flex-direction: column; align-items: center;
  gap: 5px; padding: 60px 24px; text-align: center;
}
/* display:flex above would beat the UA's [hidden] rule — restore it */
.blog-empty[hidden] { display: none; }

/* same for the filterable cards, which the chips hide via the hidden attr */
.feat-post[hidden], .post-card[hidden] { display: none; }
.blog-empty-ico {
  width: 46px; height: 46px; border-radius: 13px;
  display: grid; place-items: center; margin-bottom: 8px;
  background: var(--surface-2); border: 1px dashed var(--border-strong);
  color: var(--text-subtle);
}
.blog-empty-title { font-size: 15px; font-weight: 700; color: var(--text-muted); }
.blog-empty-sub { font-size: 13px; color: var(--text-subtle); max-width: 420px; }

/* ============ ARTICLE PAGE ============ */
.post-main { padding-top: 40px; }
.post-wrap { max-width: 860px; margin: 0 auto; }

/* breadcrumb */
.post-crumb {
  display: flex; gap: 8px; align-items: center; flex-wrap: wrap;
  font-family: var(--mono); font-size: 12.5px;
  color: var(--text-subtle);
  margin-bottom: 30px;
}
.post-crumb a { transition: color 140ms; }
.post-crumb a:hover { color: var(--text); }
.post-crumb .sep { opacity: 0.5; }
.post-crumb .current {
  color: var(--text-muted);
  max-width: 46ch; overflow: hidden;
  text-overflow: ellipsis; white-space: nowrap;
}

/* header */
.post-head { text-align: center; display: flex; flex-direction: column; align-items: center; }
.post-head .post-cat { align-self: center; }
.post-h1 {
  font-size: 40px; font-weight: 800;
  letter-spacing: -0.03em; line-height: 1.12;
  color: var(--text);
  margin-top: 16px;
  max-width: 20ch;
}
.post-lede {
  margin-top: 14px; max-width: 640px;
  font-size: 16px; color: var(--text-muted); line-height: 1.65;
}
.post-head-meta {
  margin-top: 24px;
  display: flex; align-items: center; justify-content: center;
  gap: 14px; flex-wrap: wrap;
}
.post-author { display: flex; align-items: center; gap: 10px; }
.post-author-text { display: flex; flex-direction: column; text-align: left; }
.post-author-name { font-size: 13.5px; font-weight: 700; color: var(--text); line-height: 1.3; }
.post-author-role { font-size: 12px; color: var(--text-subtle); }
.meta-chip {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 7px 13px; border-radius: 999px;
  background: var(--surface); border: 1px solid var(--border);
  font-size: 12.5px; color: var(--text-muted); font-weight: 600;
}
.meta-chip svg { color: var(--text-subtle); }

/* share buttons */
.post-share { display: flex; gap: 7px; }
.share-btn {
  width: 34px; height: 34px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--surface); border: 1px solid var(--border);
  color: var(--text-muted); transition: 150ms;
}
.share-btn:hover { color: var(--text); background: var(--surface-2); border-color: var(--border-strong); }
.share-btn.copied {
  color: var(--success); border-color: rgba(77, 216, 156, 0.4);
  background: var(--success-bg);
}

/* cover banner */
.post-cover-banner {
  width: 100%; height: 240px;
  margin-top: 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
}
.post-cover-banner .post-cover-ico { width: 72px; height: 72px; border-radius: 20px; }

/* ---- article body typography ---- */
.post-body {
  max-width: 720px; margin: 40px auto 0;
  font-size: 15.5px; line-height: 1.75;
  color: var(--text-muted);
  text-align: left;
}
.post-body p { margin: 0 0 18px; }
.post-body strong { color: var(--text); font-weight: 700; }
.post-body em { color: var(--text); }
.post-body a {
  color: var(--brand-bright);
  border-bottom: 1px dashed rgba(255, 168, 7, 0.4);
  transition: 140ms;
}
.post-body a:hover { color: var(--brand); border-bottom-style: solid; }
.post-body h2 {
  font-size: 23px; font-weight: 800;
  color: var(--text); letter-spacing: -0.02em; line-height: 1.25;
  margin: 38px 0 14px;
}
.post-body h2::before {
  content: ""; display: block;
  width: 44px; height: 3px; border-radius: 2px;
  background: var(--accent-gradient);
  background-size: 200% auto;
  margin-bottom: 12px;
}
.post-body h3 {
  font-size: 17.5px; font-weight: 700;
  color: var(--text); margin: 28px 0 10px;
}
.post-body ul, .post-body ol {
  margin: 0 0 18px; padding-left: 24px;
  display: flex; flex-direction: column; gap: 9px;
}
.post-body li::marker { color: var(--brand-bright); font-weight: 700; }
.post-body blockquote {
  margin: 26px 0;
  padding: 18px 22px;
  border-left: 3px solid var(--accent-color);
  border-radius: 0 14px 14px 0;
  background:
    radial-gradient(120% 140% at 0% 0%, rgba(253, 29, 96, 0.07), transparent 60%),
    var(--surface);
  color: var(--text); font-size: 15.5px; font-weight: 600;
  line-height: 1.6;
}
.post-body code {
  font-family: var(--mono); font-size: 13px;
  padding: 2px 7px; border-radius: 5px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--brand-bright);
  word-break: break-word;
}
.post-body pre {
  margin: 0 0 20px; padding: 18px 20px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow-x: auto;
}
.post-body pre code {
  background: none; border: none; padding: 0;
  color: var(--text); font-size: 13px; line-height: 1.7;
}
.post-body table {
  width: 100%; border-collapse: collapse;
  margin: 0 0 20px; font-size: 13.5px;
}
.post-body th {
  text-align: left; padding: 10px 14px;
  font-size: 11.5px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--text-muted); background: var(--surface-2);
  border-bottom: 1px solid var(--border-faint);
}
.post-body td { padding: 10px 14px; border-bottom: 1px solid var(--border-faint); }
.post-body hr { border: none; border-top: 1px solid var(--border-faint); margin: 30px 0; }

/* tags */
.post-tags {
  max-width: 720px; margin: 30px auto 0;
  padding-top: 22px; border-top: 1px solid var(--border-faint);
  display: flex; gap: 8px; flex-wrap: wrap;
}
.post-tag {
  font-family: var(--mono); font-size: 12px; font-weight: 500;
  padding: 5px 11px; border-radius: 6px;
  background: var(--surface-2); color: var(--text-muted);
  border: 1px solid var(--border-faint);
  transition: 150ms;
}
.post-tag:hover { color: var(--brand-bright); border-color: rgba(255, 168, 7, 0.3); }

/* key takeaways (answer-first summary at the top of the article) */
.post-tldr {
  margin: 0 0 28px;
  padding: 18px 22px;
  border-radius: var(--radius-xl);
  background:
    radial-gradient(130% 140% at 0% 0%, var(--cat-soft, rgba(255, 168, 7, 0.1)), transparent 55%),
    var(--surface);
  border: 1px solid var(--border);
}
.post-tldr-head {
  display: flex; align-items: center; gap: 8px;
  font-size: 11.5px; font-weight: 800;
  text-transform: uppercase; letter-spacing: 0.14em;
  color: var(--cat, var(--brand-bright));
  margin-bottom: 11px;
}
.post-tldr ul { margin: 0; padding-left: 20px; display: flex; flex-direction: column; gap: 8px; }
.post-tldr li { font-size: 14.5px; line-height: 1.6; color: var(--text); }
.post-tldr li::marker { color: var(--cat, var(--brand-bright)); }

/* FAQ (question-phrased headings; mirrored in FAQPage JSON-LD) */
.post-faq { margin-top: 10px; }
.post-faq-item {
  padding: 15px 18px; margin-bottom: 10px;
  border-radius: 12px;
  background: var(--surface);
  border: 1px solid var(--border-faint);
}
.post-body .post-faq-item h3 { margin: 0 0 7px; font-size: 15.5px; }
.post-faq-item p { margin: 0; font-size: 14.5px; line-height: 1.65; }

/* scan CTA banner */
.post-cta {
  max-width: 720px; margin: 34px auto 0;
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
  padding: 22px 26px;
  border-radius: var(--radius-xl);
  background:
    radial-gradient(130% 130% at 0% 0%, rgba(253, 29, 96, 0.12), transparent 55%),
    var(--surface);
  border: 1px solid rgba(253, 29, 96, 0.25);
  text-align: left;
}
.post-cta-ico {
  width: 52px; height: 52px; border-radius: 14px; flex-shrink: 0;
  background: var(--danger-bg); color: var(--danger-bright);
  display: grid; place-items: center;
  box-shadow: 0 0 32px -8px rgba(253, 29, 96, 0.55);
}
.post-cta-text { flex: 1; min-width: 240px; }
.post-cta-title { font-size: 16px; font-weight: 800; color: var(--text); letter-spacing: -0.01em; }
.post-cta-desc { font-size: 13.5px; color: var(--text-muted); margin-top: 3px; line-height: 1.55; }
.post-cta .btn { flex-shrink: 0; }

/* related posts */
.post-related { max-width: 1080px; margin: 64px auto 0; }
.post-related-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 16px; max-width: 1080px; margin: 0 auto;
}
.post-related-head h2 {
  font-size: 22px; font-weight: 800;
  color: var(--text); letter-spacing: -0.02em;
}
.post-related-all {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13.5px; font-weight: 700; color: var(--brand-bright);
  transition: 140ms;
}
.post-related-all:hover { color: var(--brand); }
.post-related .posts-grid { margin-top: 18px; }

/* 404 state */
.post-notfound {
  max-width: 560px; margin: 40px auto;
  display: flex; flex-direction: column; align-items: center;
  gap: 6px; padding: 64px 34px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  text-align: center;
}
.post-notfound .btn { margin-top: 18px; }

/* ---- responsive ---- */
@media (max-width: 1080px) {
  .posts-grid { grid-template-columns: repeat(2, 1fr); max-width: 720px; }
  .feat-post { grid-template-columns: 1fr; max-width: 720px; }
  .feat-cover {
    order: -1; min-height: 190px;
    border-left: none; border-bottom: 1px solid var(--border-faint);
  }
}
@media (max-width: 680px) {
  .posts-grid { grid-template-columns: 1fr; max-width: 480px; }
  .feat-post { max-width: 480px; }
  .feat-body { padding: 26px 24px 24px; }
  .feat-read { display: none; }
}
@media (max-width: 560px) {
  .blog-title { font-size: 34px; }
  .blog-main { padding-top: 36px; }
  .post-h1 { font-size: 29px; }
  .post-cover-banner { height: 170px; }
  .post-body { font-size: 15px; }
}