/* Blog — clean editorial layout */
/* Owns: /blog and /blog/:slug pages only. Does NOT affect landing page. */

:root {
  --blog-bg: #0f0e0d;
  --blog-surface: #1a1917;
  --blog-border: rgba(255,255,255,0.08);
  --blog-text: #e8e6e3;
  --blog-muted: #8c8a86;
  --blog-accent: #ff6b2b;
  --blog-link: #ff6b2b;
  --blog-max-w: 720px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

.blog-body {
  background: var(--blog-bg);
  color: var(--blog-text);
  font-family: 'DM Sans', sans-serif;
  font-size: 1.0625rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* ── Nav ── */
.blog-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  background: rgba(15,14,13,0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--blog-border);
}

.blog-nav-brand {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--blog-text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.blog-nav-cta {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  color: #fff;
  background: var(--blog-accent);
  padding: 8px 18px;
  border-radius: 8px;
  text-decoration: none;
  transition: opacity 0.15s;
}
.blog-nav-cta:hover { opacity: 0.88; }

/* ── Container ── */
.blog-container {
  max-width: var(--blog-max-w);
  margin: 0 auto;
  padding: 64px 24px 96px;
}

/* ── Blog index ── */
.blog-header {
  margin-bottom: 56px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--blog-border);
}

.blog-index-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
  color: #fff;
}

.blog-index-sub {
  color: var(--blog-muted);
  font-size: 1rem;
}

.blog-list {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.blog-card {
  border: 1px solid var(--blog-border);
  border-radius: 14px;
  background: var(--blog-surface);
  transition: border-color 0.15s, transform 0.15s;
}
.blog-card:hover {
  border-color: rgba(255,107,43,0.35);
  transform: translateY(-2px);
}

.blog-card-link {
  display: block;
  padding: 32px;
  text-decoration: none;
  color: inherit;
}

.blog-card-meta {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 14px;
}

.blog-card-tag {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--blog-accent);
  background: rgba(255,107,43,0.1);
  padding: 3px 8px;
  border-radius: 4px;
}

.blog-card-read {
  font-size: 0.8rem;
  color: var(--blog-muted);
}

.blog-card-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 10px;
  line-height: 1.3;
}

.blog-card-desc {
  color: var(--blog-muted);
  font-size: 0.95rem;
  margin-bottom: 18px;
  line-height: 1.55;
}

.blog-card-arrow {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--blog-accent);
}

/* ── Article ── */
.blog-article {
  padding-top: 16px;
}

.article-header {
  margin-bottom: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--blog-border);
}

.article-meta-top {
  display: flex;
  gap: 16px;
  align-items: center;
  margin-bottom: 24px;
}

.article-back {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--blog-muted);
  text-decoration: none;
  transition: color 0.15s;
}
.article-back:hover { color: var(--blog-text); }

.article-tag {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--blog-accent);
  background: rgba(255,107,43,0.1);
  padding: 3px 8px;
  border-radius: 4px;
}

.article-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 8px;
}

.article-title-sub {
  color: var(--blog-muted);
}

.article-meta {
  display: flex;
  gap: 8px;
  align-items: center;
  color: var(--blog-muted);
  font-size: 0.875rem;
  margin-bottom: 20px;
}

.article-lede {
  font-size: 1.15rem;
  color: #b5b2ae;
  line-height: 1.65;
  font-style: italic;
}

/* ── Article body typography ── */
.article-body h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
  margin: 48px 0 16px;
  line-height: 1.25;
}

.article-body h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
  margin: 32px 0 10px;
}

.article-body p {
  margin-bottom: 22px;
  color: #cbc9c5;
}

.article-body ul,
.article-body ol {
  margin: 0 0 22px 24px;
  color: #cbc9c5;
}

.article-body li {
  margin-bottom: 8px;
}

.article-body strong {
  color: var(--blog-text);
  font-weight: 600;
}

/* ── Stat callout ── */
.article-stat-callout {
  display: flex;
  gap: 24px;
  align-items: center;
  background: var(--blog-surface);
  border: 1px solid rgba(255,107,43,0.25);
  border-left: 4px solid var(--blog-accent);
  border-radius: 12px;
  padding: 28px 32px;
  margin: 36px 0;
}

.stat-big {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--blog-accent);
  line-height: 1;
  flex-shrink: 0;
}

.stat-desc {
  color: #b5b2ae;
  font-size: 1rem;
  line-height: 1.55;
}

/* ── Data table ── */
.article-data-table {
  margin: 32px 0;
  overflow-x: auto;
}

.article-data-table table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.article-data-table th {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--blog-muted);
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--blog-border);
}

.article-data-table td {
  color: #cbc9c5;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

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

.table-note {
  font-size: 0.8rem;
  color: var(--blog-muted);
  margin-top: 10px;
  font-style: italic;
}

/* ── Pull quote ── */
.article-pull-quote {
  margin: 40px 0;
  padding: 24px 32px;
  border-left: 3px solid var(--blog-accent);
  font-size: 1.1rem;
  font-style: italic;
  color: #b5b2ae;
  line-height: 1.6;
}

.article-pull-quote cite {
  display: block;
  margin-top: 12px;
  font-size: 0.8rem;
  font-style: normal;
  color: var(--blog-muted);
}

/* ── Math block ── */
.article-math-block {
  background: var(--blog-surface);
  border: 1px solid var(--blog-border);
  border-radius: 12px;
  padding: 24px 28px;
  margin: 28px 0;
}

.math-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  gap: 16px;
}
.math-row:last-child { border-bottom: none; }

.math-label {
  color: var(--blog-muted);
  font-size: 0.9rem;
}

.math-value {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  color: var(--blog-text);
  font-size: 0.9rem;
  text-align: right;
}

.math-total .math-label,
.math-total .math-value {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
}

.math-total .math-value {
  color: var(--blog-accent);
  font-size: 1.1rem;
}

/* ── CTA block ── */
.article-cta-block {
  background: linear-gradient(135deg, rgba(255,107,43,0.12) 0%, rgba(255,107,43,0.04) 100%);
  border: 1px solid rgba(255,107,43,0.3);
  border-radius: 16px;
  padding: 40px;
  margin: 56px 0 0;
  text-align: center;
}

.article-cta-block h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  margin: 0 0 12px;
}

.article-cta-block p {
  color: #b5b2ae;
  font-size: 0.95rem;
  margin-bottom: 24px;
  max-width: 460px;
  margin-left: auto;
  margin-right: auto;
}

.article-cta-btn {
  display: inline-block;
  background: var(--blog-accent);
  color: #fff;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  padding: 14px 32px;
  border-radius: 10px;
  text-decoration: none;
  transition: opacity 0.15s;
  margin-bottom: 14px;
}
.article-cta-btn:hover { opacity: 0.88; }

.article-cta-sub {
  font-size: 0.8rem;
  color: var(--blog-muted);
  margin-top: 8px;
  margin-bottom: 0;
}

/* ── Footer ── */
.blog-footer {
  border-top: 1px solid var(--blog-border);
  padding: 32px 24px;
}

.blog-footer-inner {
  max-width: var(--blog-max-w);
  margin: 0 auto;
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}

.blog-footer-brand {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  color: var(--blog-text);
}

.blog-footer-tagline {
  color: var(--blog-muted);
  font-size: 0.875rem;
  flex: 1;
}

.blog-footer-cta {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--blog-accent);
  text-decoration: none;
  border: 1px solid rgba(255,107,43,0.3);
  padding: 7px 14px;
  border-radius: 7px;
  transition: border-color 0.15s;
}
.blog-footer-cta:hover { border-color: var(--blog-accent); }

/* ── Responsive ── */
@media (max-width: 600px) {
  .blog-nav { padding: 14px 16px; }
  .blog-container { padding: 40px 16px 64px; }
  .blog-card-link { padding: 24px; }
  .article-stat-callout { flex-direction: column; gap: 12px; text-align: center; }
  .stat-big { font-size: 2.75rem; }
  .article-cta-block { padding: 28px 20px; }
  .math-row { flex-direction: column; align-items: flex-start; gap: 2px; }
  .math-value { text-align: left; }
}