/* blog.css v2 — Phase 1 design system */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --navy-900: #060E1A; --navy-800: #0B1A2E; --navy-700: #122A4A; --navy-600: #1B3D6B;
  --teal-500: #1D9E75; --teal-400: #5DCAA5; --teal-300: #9FE1CB; --teal-100: #E1F5EE;
  --white: #FFFFFF; --gray-100: #F4F6F8; --gray-200: #E2E6EB; --gray-400: #8A94A0;
  --gray-600: #4A5568; --gray-800: #1A202C;
}
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: var(--navy-900); color: var(--gray-200); line-height: 1.7; }
a { text-decoration: none; color: inherit; }

/* NAV — matches Phase 1 pages */
nav { background: var(--navy-800); padding: 0 2rem; position: fixed; top: 0; width: 100%; z-index: 100; border-bottom: 1px solid var(--navy-700); }
.nav-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { font-size: 22px; font-weight: 700; color: var(--white); letter-spacing: -0.5px; }
.logo span { color: var(--teal-400); }
.nav-links { display: flex; gap: 2rem; align-items: center; }
.nav-links a { color: var(--teal-300); font-size: 14px; font-weight: 500; transition: color 0.2s; }
.nav-links a:hover { color: var(--white); }
.nav-cta { background: var(--teal-500); color: var(--white) !important; padding: 8px 20px; border-radius: 6px; font-weight: 600; transition: background 0.2s; }
.nav-cta:hover { background: #178A64; }
.mobile-menu { display: none; background: none; border: none; cursor: pointer; }
.mobile-menu svg { width: 28px; height: 28px; stroke: var(--teal-300); }

/* BLOG HERO */
.blog-hero { background: linear-gradient(135deg, var(--navy-900) 0%, var(--navy-800) 50%, var(--navy-700) 100%); padding: 7rem 2rem 3rem; text-align: left; position: relative; overflow: hidden; }
.blog-hero::before { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: radial-gradient(circle at 30% 80%, rgba(29,158,117,0.08) 0%, transparent 50%), radial-gradient(circle at 70% 20%, rgba(93,202,165,0.05) 0%, transparent 40%); }
.blog-hero .hero-content { position: relative; max-width: 900px; margin: 0 auto; }
.blog-hero h1 { font-size: 2.4rem; font-weight: 800; color: var(--white); line-height: 1.2; margin-bottom: 0.75rem; letter-spacing: -0.5px; }
.subtitle { color: var(--gray-400); font-size: 1rem; margin-bottom: 0; }

/* POSTS */
main { max-width: 900px; margin: 0 auto; padding: 3rem 2rem 4rem; }
.post-card { background: var(--navy-800); border: 1px solid var(--navy-700); border-radius: 10px; padding: 1.75rem 2rem; margin-bottom: 1.5rem; transition: border-color 0.2s, transform 0.2s; }
.post-card:hover { border-color: var(--teal-500); transform: translateY(-2px); }
.post-card h2 { color: var(--white); font-size: 1.25rem; font-weight: 700; margin-bottom: 0.5rem; line-height: 1.3; }
.post-card h2 a { color: var(--white); }
.post-card h2 a:hover { color: var(--teal-400); }
.post-card .meta { color: var(--gray-400); font-size: 0.82rem; margin-bottom: 0.75rem; }
.post-card .excerpt { color: var(--gray-200); font-size: 0.95rem; line-height: 1.7; }
.post-card .read-more { display: inline-block; margin-top: 0.75rem; color: var(--teal-400); font-size: 0.88rem; font-weight: 600; transition: color 0.2s; }
.post-card .read-more:hover { color: var(--teal-300); }

/* FOOTER — matches Phase 1 pages */
footer { background: var(--navy-900); padding: 3rem 2rem 2rem; border-top: 1px solid var(--navy-700); }
.footer-inner { max-width: 1100px; margin: 0 auto; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2rem; margin-bottom: 2.5rem; }
.footer-brand .logo { margin-bottom: 0.75rem; display: inline-block; }
.footer-brand p { color: var(--gray-400); font-size: 0.9rem; line-height: 1.6; max-width: 280px; }
.footer-col h4 { color: var(--white); font-size: 0.85rem; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 1rem; }
.footer-col a { display: block; color: var(--gray-400); font-size: 0.9rem; margin-bottom: 0.5rem; transition: color 0.2s; }
.footer-col a:hover { color: var(--teal-400); }
.footer-bottom { border-top: 1px solid var(--navy-700); padding-top: 1.5rem; display: flex; justify-content: space-between; align-items: center; }
.footer-bottom p { color: var(--gray-400); font-size: 0.85rem; }

/* RESPONSIVE */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-menu { display: block; }
  .blog-hero { padding: 6rem 1.5rem 2.5rem; }
  .blog-hero h1 { font-size: 1.75rem; }
  main { padding: 2rem 1.25rem 3rem; }
  .post-card { padding: 1.25rem 1.5rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}