/* ========================================
   VEQTOR BLOG — blog.css
   Inherits design system from landing page
   ======================================== */

/* --- VARIABLES --- */
:root {
  --cream: #fffdf7;
  --dark: #0a0a0a;
  --dark-2: #111;
  --dark-3: #1a1a1a;
  --gold: #d1a326;
  --gold-light: #e8c560;
  --gold-dim: rgba(209,163,38,0.12);
  --text: #0a0a0a;
  --text-2: #444;
  --text-muted: #999;
  --radius: 20px;
  --radius-sm: 12px;
  --ease: cubic-bezier(.22,1,.36,1);
  --font-head: 'Space Grotesk', sans-serif;
  --font-serif: 'DM Serif Display', Georgia, serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --max-w: 1200px;
}

/* --- RESET --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--cream);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ========================================
   NAV (blog version — simpler)
   ======================================== */
.blog-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 18px 0;
  background: rgba(10,10,10,.95);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
}
.blog-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.blog-nav .nav-logo {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.4rem;
  color: #fff;
  letter-spacing: .06em;
}
.blog-nav .nav-logo i {
  font-style: normal;
  color: var(--gold);
}
.blog-nav .nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}
.blog-nav .nav-links a {
  font-size: .9rem;
  font-weight: 500;
  color: rgba(255,255,255,.6);
  transition: color .3s;
}
.blog-nav .nav-links a:hover,
.blog-nav .nav-links a.active {
  color: #fff;
}
.blog-nav .nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 10px 24px;
  border-radius: 999px;
  background: #fff;
  color: var(--dark);
  font-weight: 600;
  font-size: .88rem;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.blog-nav .nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 40px rgba(255,255,255,.15);
}

/* ========================================
   BREADCRUMB
   ======================================== */
.breadcrumb {
  padding: 14px 0;
  background: var(--cream);
  border-bottom: 1px solid rgba(0,0,0,.06);
  font-size: .82rem;
  color: var(--text-muted);
}
.breadcrumb a {
  color: var(--text-muted);
  transition: color .2s;
}
.breadcrumb a:hover {
  color: var(--gold);
}
.breadcrumb span {
  margin: 0 6px;
  color: rgba(0,0,0,.2);
}

/* ========================================
   BLOG HERO (index page)
   ======================================== */
.blog-hero {
  padding: 80px 0 48px;
  text-align: center;
  background: var(--dark);
  color: #fff;
}
.blog-hero h1 {
  font-family: var(--font-head);
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -.02em;
  margin-bottom: 12px;
}
.blog-hero h1 em {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--gold);
}
.blog-hero p {
  font-size: 1.1rem;
  color: rgba(255,255,255,.6);
  max-width: 560px;
  margin: 0 auto;
}

/* ========================================
   CATEGORY FILTERS
   ======================================== */
.blog-filters {
  padding: 24px 0;
  background: var(--cream);
  border-bottom: 1px solid rgba(0,0,0,.06);
  position: sticky;
  top: 62px;
  z-index: 50;
}
.blog-filters .container {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}
.filter-btn {
  padding: 8px 20px;
  border: 1px solid rgba(0,0,0,.1);
  border-radius: 999px;
  background: transparent;
  font-family: var(--font-body);
  font-size: .88rem;
  font-weight: 500;
  color: var(--text-2);
  cursor: pointer;
  transition: all .3s var(--ease);
}
.filter-btn:hover {
  border-color: var(--gold);
  color: var(--gold);
}
.filter-btn.active {
  background: var(--dark);
  color: #fff;
  border-color: var(--dark);
}

/* ========================================
   BLOG GRID (card listing)
   ======================================== */
.blog-grid-section {
  padding: 48px 0 64px;
}
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}
.blog-card {
  display: flex;
  flex-direction: column;
  padding: 32px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid rgba(0,0,0,.06);
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .3s;
}
.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,.08);
  border-color: var(--gold);
}
.blog-card .card-cat {
  display: inline-block;
  font-size: .75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--gold);
  margin-bottom: 12px;
}
.blog-card h2 {
  font-family: var(--font-head);
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 12px;
  color: var(--dark);
}
.blog-card .card-desc {
  font-size: .9rem;
  color: var(--text-2);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 16px;
}
.blog-card time {
  font-size: .8rem;
  color: var(--text-muted);
}
.blog-empty {
  text-align: center;
  padding: 48px 0;
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* ========================================
   ARTICLE PAGE
   ======================================== */
.article-page {
  padding: 48px 0 64px;
}
.article-page .container {
  max-width: 780px;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}
.article-cat {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 999px;
  background: var(--gold-dim);
  font-size: .78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--gold);
}
.article-meta time {
  font-size: .85rem;
  color: var(--text-muted);
}
.article-page h1 {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -.02em;
  margin-bottom: 40px;
  color: var(--dark);
}

/* --- Article body prose --- */
.article-body {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-2);
}
.article-body h2 {
  font-family: var(--font-head);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--dark);
  margin: 48px 0 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--gold-dim);
}
.article-body h3 {
  font-family: var(--font-head);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--dark);
  margin: 32px 0 12px;
}
.article-body p {
  margin-bottom: 20px;
}
.article-body a {
  color: var(--gold);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color .2s;
}
.article-body a:hover {
  color: var(--gold-light);
}
.article-body strong {
  font-weight: 600;
  color: var(--dark);
}
.article-body ul, .article-body ol {
  margin: 16px 0 24px 24px;
}
.article-body li {
  margin-bottom: 8px;
}
.article-body blockquote {
  margin: 24px 0;
  padding: 20px 24px;
  border-left: 3px solid var(--gold);
  background: var(--gold-dim);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--text-2);
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: .95rem;
}
.article-body th {
  background: var(--dark);
  color: #fff;
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  font-size: .85rem;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.article-body td {
  padding: 12px 16px;
  border-bottom: 1px solid rgba(0,0,0,.06);
}
.article-body tr:hover td {
  background: var(--gold-dim);
}

/* Veqtor CTA inside article */
.veqtor-cta {
  margin: 40px 0;
  padding: 28px 32px;
  border-radius: var(--radius);
  background: var(--dark);
  color: #fff;
}
.veqtor-cta p {
  margin: 0;
  color: rgba(255,255,255,.8);
}
.veqtor-cta strong {
  color: var(--gold);
}

/* Inline related articles */
.veqtor-related-inline {
  margin: 32px 0;
  padding: 24px 28px;
  border-radius: var(--radius-sm);
  background: #fff;
  border: 1px solid rgba(0,0,0,.06);
}
.veqtor-related-inline h3 {
  font-size: 1rem;
  margin: 0 0 12px;
  color: var(--dark);
}
.veqtor-related-inline ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.veqtor-related-inline li {
  margin-bottom: 8px;
}
.veqtor-related-inline a {
  color: var(--gold);
  font-weight: 500;
}

/* ========================================
   CTA BAND (shared)
   ======================================== */
.cta-band {
  padding: 64px 0;
  background: var(--dark);
  text-align: center;
  color: #fff;
}
.cta-band h2 {
  font-family: var(--font-head);
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  margin-bottom: 12px;
}
.cta-band p {
  font-size: 1.05rem;
  color: rgba(255,255,255,.6);
  margin-bottom: 28px;
}
.cta-band strong {
  color: var(--gold);
}
.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 36px;
  border-radius: 999px;
  background: var(--gold);
  color: var(--dark);
  font-weight: 700;
  font-size: 1rem;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.btn-cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(209,163,38,.35);
}

/* ========================================
   RELATED POSTS SECTION
   ======================================== */
.related-posts {
  padding: 64px 0;
}
.related-posts h2 {
  font-family: var(--font-head);
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 28px;
  text-align: center;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.related-card {
  display: flex;
  flex-direction: column;
  padding: 28px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid rgba(0,0,0,.06);
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .3s;
}
.related-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 36px rgba(0,0,0,.07);
  border-color: var(--gold);
}
.related-cat {
  font-size: .72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--gold);
  margin-bottom: 8px;
}
.related-card h3 {
  font-family: var(--font-head);
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 12px;
  color: var(--dark);
}
.related-date {
  font-size: .8rem;
  color: var(--text-muted);
  margin-top: auto;
}

/* ========================================
   FOOTER
   ======================================== */
.blog-footer {
  padding: 32px 0;
  border-top: 1px solid rgba(0,0,0,.06);
  font-size: .82rem;
  color: var(--text-muted);
}
.blog-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-links {
  display: flex;
  gap: 24px;
}
.footer-links a {
  color: var(--text-muted);
  transition: color .2s;
}
.footer-links a:hover {
  color: var(--gold);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 768px) {
  .blog-nav .nav-links { display: none; }
  .blog-nav .nav-cta { padding: 8px 18px; font-size: .82rem; }

  .blog-hero { padding: 60px 0 36px; }
  .blog-hero h1 { font-size: 2rem; }
  .blog-hero p { font-size: .95rem; }

  .blog-filters { top: 56px; }
  .filter-btn { padding: 6px 14px; font-size: .82rem; }

  .blog-grid { grid-template-columns: 1fr; gap: 16px; }
  .blog-card { padding: 24px; }
  .blog-card h2 { font-size: 1.1rem; }

  .article-page { padding: 32px 0 48px; }
  .article-page h1 { font-size: 1.6rem; margin-bottom: 28px; }
  .article-body { font-size: 1rem; }
  .article-body h2 { font-size: 1.35rem; margin-top: 36px; }
  .article-body h3 { font-size: 1.1rem; }
  .article-body table { font-size: .85rem; }
  .article-body th, .article-body td { padding: 8px 12px; }

  .veqtor-cta { padding: 20px 24px; }

  .cta-band { padding: 48px 0; }
  .cta-band h2 { font-size: 1.4rem; }
  .btn-cta { padding: 14px 28px; font-size: .92rem; }

  .related-grid { grid-template-columns: 1fr; }
  .related-card { padding: 20px; }

  .blog-footer .container { flex-direction: column; text-align: center; gap: 8px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .blog-card { padding: 20px; }
  .article-body h2 { font-size: 1.2rem; }
}