/* Smart AI Mart - Sports Betting Platform Theme */
:root {
  --bg-primary: #0a0f1a;
  --bg-secondary: #111827;
  --bg-card: #1a2332;
  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --accent: #10b981;
  --accent-dark: #059669;
  --accent-glow: rgba(16, 185, 129, 0.3);
  --border: #1f2937;
  --radius: 8px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; transition: opacity 0.2s; }
a:hover { opacity: 0.8; }

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

.container { max-width: 1280px; margin: 0 auto; padding: 0 1.5rem; }

/* Header */
.site-header {
  background: rgba(10, 15, 26, 0.95);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 2rem;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.site-logo img {
  height: 36px;
  width: auto;
}

.site-logo span {
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.main-nav { display: flex; gap: 0.25rem; }

.nav-link {
  padding: 0.5rem 1rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius);
  transition: all 0.2s;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent);
  background: rgba(16, 185, 129, 0.1);
}

/* Mobile Menu */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
}

.mobile-nav {
  display: none;
  flex-direction: column;
  padding: 1rem 1.5rem;
  gap: 0.25rem;
  border-top: 1px solid var(--border);
  background: var(--bg-primary);
}

.mobile-nav.open { display: flex; }

.mobile-nav .nav-link {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
}

/* Hero Section */
.hero {
  position: relative;
  overflow: hidden;
  min-height: 85vh;
  display: flex;
  align-items: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.4;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,15,26,0.85) 0%, rgba(10,15,26,0.5) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
  padding: 0.4rem 1rem;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: 2rem;
}

.hero h1 {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.hero p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 2rem;
  max-width: 600px;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  background: var(--accent);
  color: #000;
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: all 0.2s;
}

.hero-cta:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px var(--accent-glow);
  opacity: 1;
}

/* Sections */
.section {
  padding: 5rem 0;
}

.section-alt {
  background: var(--bg-secondary);
}

.section-header {
  margin-bottom: 3rem;
}

.section-header h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 560px;
}

/* Cards Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) * 1.5);
  overflow: hidden;
  transition: all 0.25s ease;
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: var(--shadow), 0 0 0 1px rgba(16,185,129,0.2);
  opacity: 1;
}

.card-image {
  aspect-ratio: 16/9;
  overflow: hidden;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}

.card:hover .card-image img {
  transform: scale(1.04);
}

.card-body { padding: 1.5rem; }

.card-meta {
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.6rem;
}

.card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

.card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.card-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-date { font-size: 0.8rem; color: var(--text-secondary); }

.card-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.card-link:hover { opacity: 0.8; }

/* Feature blocks */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.feature-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) * 1.5);
  padding: 2rem;
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: rgba(16, 185, 129, 0.15);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.feature-item h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.feature-item p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Stats bar */
.stats-bar {
  display: flex;
  gap: 3rem;
  flex-wrap: wrap;
}

.stat-item { text-align: center; }

.stat-value {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.04em;
  line-height: 1;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.4rem;
}

/* Article page layout */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 3rem;
  align-items: start;
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

.article-main {}

.article-hero-image {
  border-radius: calc(var(--radius) * 1.5);
  overflow: hidden;
  margin-bottom: 2rem;
  aspect-ratio: 16/9;
}

.article-hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { color: var(--text-secondary); opacity: 0.5; }

.article-category-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 1rem;
}

.article-header h1 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.article-meta-info {
  display: flex;
  gap: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.article-content {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--text-primary);
}

.article-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 2.5rem 0 1rem;
  letter-spacing: -0.02em;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
}

.article-content h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 1.75rem 0 0.75rem;
}

.article-content p { margin-bottom: 1.25rem; }

.article-content ul, .article-content ol {
  margin: 1rem 0 1.25rem 1.5rem;
}

.article-content li { margin-bottom: 0.5rem; }

.article-content img {
  border-radius: var(--radius);
  margin: 1.5rem 0;
  max-width: 100%;
}

.article-content blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 1.5rem;
  margin: 1.5rem 0;
  color: var(--text-secondary);
  font-style: italic;
}

/* Article sidebar */
.article-sidebar {
  position: sticky;
  top: 96px;
}

.sidebar-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) * 1.5);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.sidebar-section h4 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.related-article {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.related-article:last-child { margin-bottom: 0; padding-bottom: 0; border-bottom: none; }

.related-thumb {
  width: 72px;
  height: 54px;
  border-radius: 6px;
  overflow: hidden;
  flex-shrink: 0;
}

.related-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.related-info h5 {
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 0.25rem;
}

.related-info a { color: var(--text-primary); }
.related-info a:hover { color: var(--accent); opacity: 1; }

.related-date { font-size: 0.75rem; color: var(--text-secondary); }

/* FAQ */
.faq-item {
  margin-bottom: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.faq-question {
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.faq-answer {
  padding: 0 1.25rem 1rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
  display: none;
}

.faq-item.open .faq-answer { display: block; }
.faq-item.open .faq-toggle { transform: rotate(180deg); }

.faq-toggle { transition: transform 0.2s; }

/* Category page */
.category-hero {
  padding: 3rem 0;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.category-hero h1 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.category-hero p { color: var(--text-secondary); }

/* Footer */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 3rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.footer-brand p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: 1rem;
  line-height: 1.7;
}

.footer-col h4 {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 1rem;
}

.footer-col ul { list-style: none; }

.footer-col li { margin-bottom: 0.5rem; }

.footer-col a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color 0.2s;
}

.footer-col a:hover { color: var(--accent); }

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* JSON-LD */
.json-ld { display: none; }

/* Responsive */
@media (max-width: 1024px) {
  .article-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    position: static;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .main-nav { display: none; }
  .mobile-toggle { display: block; }
  
  .hero { min-height: 70vh; }
  .hero h1 { font-size: 2rem; }
  
  .section { padding: 3rem 0; }
  
  .cards-grid {
    grid-template-columns: 1fr;
  }
  
  .stats-bar { gap: 2rem; }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* Article layout split style */
.article-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin: 1.5rem 0;
  align-items: center;
}

.article-split img {
  width: 100%;
  border-radius: var(--radius);
}

.article-split .split-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

@media (max-width: 768px) {
  .article-split {
    grid-template-columns: 1fr;
  }
}