/* SixFlow Blog Styles — light theme to match main site */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600;700;800&display=swap');

:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f7f7f6;
  --bg-tertiary: #ebebea;
  --text-primary: #1c1917;
  --text-secondary: #3f3c39;
  --text-muted: #78716c;
  --border: rgba(28, 25, 23, 0.1);
  --border-strong: rgba(28, 25, 23, 0.18);
  --accent-primary: #8b5cf6;
  --accent-secondary: #f59e0b;
  --gradient-mesh:
    radial-gradient(at 0% 0%, rgba(139, 92, 246, 0.07) 0, transparent 50%),
    radial-gradient(at 100% 0%, rgba(245, 158, 11, 0.05) 0, transparent 50%),
    radial-gradient(at 100% 100%, rgba(139, 92, 246, 0.05) 0, transparent 50%),
    radial-gradient(at 0% 100%, rgba(245, 158, 11, 0.04) 0, transparent 50%);
  --font-display: 'JetBrains Mono', monospace;
  --font-body: 'Space Grotesk', -apple-system, system-ui, sans-serif;
  --radius: 12px;
  --radius-lg: 20px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg-primary);
  background-image: var(--gradient-mesh);
  background-attachment: fixed;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; height: auto; }

/* Top nav */
.blog-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--border);
}
.blog-nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.blog-nav a.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  font-family: var(--font-display);
}
.blog-nav a.brand:hover { text-decoration: none; }
.blog-nav a.brand img { width: 32px; height: 32px; }
.blog-nav .brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}
.blog-nav .brand-name {
  font-weight: 700;
  font-size: 17px;
  color: var(--text-primary);
}
.blog-nav .brand-tagline {
  font-size: 10px;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-top: 2px;
}
.blog-nav .nav-right {
  display: flex;
  align-items: center;
  gap: 10px;
}
.blog-nav .nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px;
  font-family: var(--font-body);
  letter-spacing: -0.01em;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.blog-nav .nav-btn--ghost {
  color: var(--text-primary);
  background: transparent;
  border: 1.5px solid var(--border-strong);
}
.blog-nav .nav-btn--ghost:hover {
  text-decoration: none;
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  background: rgba(139, 92, 246, 0.06);
}
.blog-nav .nav-btn--primary {
  background: linear-gradient(135deg, var(--accent-primary), #a78bfa);
  color: #fff;
  border: 1.5px solid transparent;
  box-shadow: 0 6px 20px rgba(139, 92, 246, 0.25);
}
.blog-nav .nav-btn--primary:hover {
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(139, 92, 246, 0.35);
}

/* Layout */
.blog-wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 64px 24px 96px;
}
.blog-wrap--wide { max-width: 1100px; }

/* Index */
.blog-hero {
  text-align: center;
  margin-bottom: 64px;
}
.blog-hero h1 {
  font-size: clamp(34px, 5vw, 52px);
  line-height: 1.1;
  margin: 0 0 16px;
  letter-spacing: -0.02em;
  font-weight: 800;
  font-family: var(--font-display);
}
.blog-hero p {
  color: var(--text-secondary);
  font-size: 19px;
  max-width: 600px;
  margin: 0 auto;
}
.blog-hero .gradient {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.post-grid {
  display: grid;
  gap: 24px;
}
.post-card {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all 0.25s ease;
  display: block;
  color: inherit;
  box-shadow: 0 2px 12px rgba(28, 25, 23, 0.04);
}
.post-card:hover {
  border-color: rgba(139, 92, 246, 0.4);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(139, 92, 246, 0.12);
}
.post-card .meta {
  color: var(--text-muted);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  margin-bottom: 12px;
  font-family: var(--font-display);
}
.post-card h2 {
  font-size: 24px;
  margin: 0 0 12px;
  letter-spacing: -0.01em;
  line-height: 1.25;
  color: var(--text-primary);
  font-family: var(--font-display);
}
.post-card p {
  color: var(--text-secondary);
  margin: 0 0 16px;
  font-size: 16px;
}
.post-card .read-more {
  color: var(--accent-primary);
  font-weight: 600;
  font-size: 14px;
}

/* Post */
.post-header {
  margin-bottom: 48px;
}
.post-header .crumbs {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 16px;
}
.post-header .crumbs a { color: var(--text-muted); }
.post-header .crumbs a:hover { color: var(--text-secondary); }
.post-header h1 {
  font-size: clamp(30px, 4.5vw, 44px);
  line-height: 1.15;
  margin: 0 0 16px;
  letter-spacing: -0.02em;
  font-weight: 800;
  font-family: var(--font-display);
  color: var(--text-primary);
}
.post-meta {
  color: var(--text-muted);
  font-size: 14px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.post-body { color: var(--text-secondary); }
.post-body h2 {
  color: var(--text-primary);
  font-size: 28px;
  margin: 56px 0 16px;
  letter-spacing: -0.015em;
  line-height: 1.25;
  font-family: var(--font-display);
}
.post-body h3 {
  color: var(--text-primary);
  font-size: 21px;
  margin: 40px 0 12px;
  letter-spacing: -0.01em;
  font-family: var(--font-display);
}
.post-body p { margin: 0 0 20px; }
.post-body ul, .post-body ol { margin: 0 0 24px; padding-left: 24px; }
.post-body li { margin-bottom: 8px; }
.post-body strong { color: var(--text-primary); }
.post-body blockquote {
  border-left: 3px solid var(--accent-primary);
  padding: 4px 0 4px 20px;
  margin: 32px 0;
  color: var(--text-primary);
  font-size: 19px;
  font-style: italic;
}
.post-body .stat-card {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.06), rgba(245, 158, 11, 0.04));
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: var(--radius);
  padding: 24px;
  margin: 32px 0;
}
.post-body .stat-card .big {
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 8px;
  font-family: var(--font-display);
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.post-body .stat-card p { margin: 0; color: var(--text-secondary); }

.post-body cite {
  display: block;
  margin-top: 6px;
  font-style: normal;
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-display);
  letter-spacing: 0.01em;
  line-height: 1.4;
}
.post-body cite a { color: var(--text-muted); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 2px; }
.post-body cite a:hover { color: var(--accent-primary); }

.post-body .sources-section {
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.post-body .sources-section h2 {
  font-size: 20px;
  margin: 0 0 16px;
  color: var(--text-primary);
}
.post-body .sources-section ol {
  font-size: 14px;
  color: var(--text-muted);
  padding-left: 20px;
}
.post-body .sources-section li {
  margin-bottom: 10px;
  line-height: 1.5;
}
.post-body .sources-section a { color: var(--text-secondary); }
.post-body .sources-section a:hover { color: var(--accent-primary); }

/* CTA block */
.post-cta {
  margin-top: 64px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
  box-shadow: 0 2px 12px rgba(28, 25, 23, 0.04);
}
.post-cta h3 {
  font-size: 24px;
  margin: 0 0 8px;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  font-family: var(--font-display);
}
.post-cta p {
  color: var(--text-secondary);
  margin: 0 0 24px;
}
.post-cta a.btn {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent-primary), #a78bfa);
  color: #fff;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 16px;
  box-shadow: 0 6px 20px rgba(139, 92, 246, 0.25);
  transition: all 0.2s ease;
}
.post-cta a.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(139, 92, 246, 0.35);
}

/* Footer */
.blog-foot {
  border-top: 1px solid var(--border);
  padding: 32px 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
  background: var(--bg-secondary);
}
.blog-foot a { color: var(--text-muted); margin: 0 12px; }
.blog-foot a:hover { color: var(--text-secondary); }

@media (max-width: 640px) {
  .blog-nav-inner { padding: 12px 16px; }
  .blog-nav .nav-btn { padding: 8px 12px; font-size: 13px; }
  .blog-nav .nav-btn--ghost { display: none; }
  .blog-wrap { padding: 40px 20px 64px; }
  .post-card { padding: 24px; }
  .post-cta { padding: 32px 20px; }
}