/* World Cup 2026 Simulator — autoresearch.lol inspired layout */

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

:root {
  --bg: #0A0F0C;
  --bg-card: #101814;
  --bg-elevated: #162019;
  --border: #1F3328;
  --border-light: #2A4536;
  --text: #F0F2EF;
  --text-secondary: #8FA898;
  --text-muted: #5C7266;
  --accent: #2ECC71;
  --accent-hover: #27AE60;
  --accent-glow: rgba(46, 204, 113, 0.12);
  --gold: #F5D547;
  --gold-soft: #C9A227;
  --radius: 12px;
  --radius-sm: 8px;
  --max-width: 1100px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
}

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

a {
  color: inherit;
  text-decoration: none;
}

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

h1, h2, h3, h4 {
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.1rem);
  font-weight: 800;
}

h2 {
  font-size: clamp(1.35rem, 3vw, 2rem);
  margin-bottom: 16px;
}

h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

p {
  color: var(--text-secondary);
  margin-bottom: 16px;
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 15, 12, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  gap: 16px;
}

.logo img {
  height: 30px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color 0.2s;
  white-space: nowrap;
}

.nav-links a:hover {
  color: var(--text);
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.mobile-menu-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #0A0F0C;
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-large {
  padding: 14px 28px;
  font-size: 1rem;
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--border-light);
}

.btn-outline:hover {
  background: var(--accent-glow);
  border-color: var(--accent);
}

/* Hero */
.hero {
  padding: 140px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -40%;
  left: 50%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 68%);
  transform: translate(-50%, 0);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 14px;
}

.hero h1 {
  margin-bottom: 18px;
}

.hero h1 em {
  font-style: normal;
  color: var(--accent);
}

.hero-text {
  font-size: 1.08rem;
  line-height: 1.7;
  margin-bottom: 28px;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.meta-item {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.hero-stats {
  display: grid;
  gap: 14px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
  transition: border-color 0.2s;
}

.stat-card:hover {
  border-color: var(--border-light);
}

.stat-value {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.03em;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* Sections */
.section {
  padding: 80px 0;
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.section.visible {
  opacity: 1;
  transform: translateY(0);
}

.section-dark {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-title {
  margin-bottom: 14px;
  max-width: 720px;
}

.section-desc {
  font-size: 1.05rem;
  max-width: 620px;
  margin-bottom: 36px;
}

.section-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 10px;
}

/* Feature cards */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.feature-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.feature-card h3 {
  color: var(--text);
  margin-bottom: 10px;
}

.feature-card p {
  margin-bottom: 0;
  font-size: 0.95rem;
}

/* Steps */
.steps {
  display: grid;
  gap: 20px;
}

.step {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid var(--border);
}

.step:last-child {
  border-bottom: none;
}

.step-num {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--gold);
  line-height: 1;
  padding-top: 4px;
}

.step h3 {
  color: var(--text);
}

.step p {
  margin-bottom: 0;
}

/* Groups */
.groups-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.group-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  transition: border-color 0.2s;
}

.group-card:hover {
  border-color: var(--border-light);
}

.group-card h3 {
  font-size: 0.95rem;
  color: var(--gold);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.group-card ul {
  list-style: none;
}

.group-card li {
  font-size: 0.82rem;
  color: var(--text-secondary);
  padding: 5px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.group-card li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.6;
  flex-shrink: 0;
}

.group-slots {
  display: flex;
  gap: 6px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.slot {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 3px 7px;
  border-radius: 4px;
  background: var(--bg-card);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.playoff-note {
  margin-top: 32px;
  padding: 20px 24px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  border-left: 3px solid var(--gold);
}

.playoff-note h3 {
  color: var(--text);
  margin-bottom: 12px;
}

.playoff-note ul {
  list-style: none;
}

.playoff-note li {
  font-size: 0.92rem;
  color: var(--text-secondary);
  padding: 6px 0;
  padding-left: 16px;
  position: relative;
}

.playoff-note li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* Bracket */
.bracket-flow {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 32px;
}

.bracket-stage {
  flex: 1;
  min-width: 120px;
  text-align: center;
  padding: 16px 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.bracket-stage strong {
  display: block;
  font-size: 0.9rem;
  color: var(--text);
  margin-bottom: 4px;
}

.bracket-stage span {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.bracket-arrow {
  display: flex;
  align-items: center;
  color: var(--text-muted);
  font-size: 1.2rem;
}

/* FAQ */
.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
}

.faq-item h3 {
  color: var(--text);
  font-size: 1rem;
  margin-bottom: 8px;
}

.faq-item p {
  margin-bottom: 0;
  font-size: 0.95rem;
}

/* CTA */
.cta-section {
  padding: 72px 0;
  text-align: center;
  background: linear-gradient(180deg, transparent 0%, var(--accent-glow) 100%);
}

.cta-content h2 {
  margin-bottom: 12px;
}

.cta-content p {
  margin-bottom: 24px;
}

/* Footer */
.footer {
  padding: 48px 0 32px;
  border-top: 1px solid var(--border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 40px;
}

.footer-tagline {
  font-size: 0.9rem;
  margin: 12px 0 20px;
}

.footer-copyright {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.footer-col h4 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 12px;
  font-weight: 600;
}

.footer-col a {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding: 4px 0;
  transition: color 0.2s;
}

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

/* Responsive */
@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .groups-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-links {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 720px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px 20px;
    gap: 14px;
  }

  .nav-links.active {
    display: flex;
  }

  .nav-cta {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .groups-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .bracket-arrow {
    display: none;
  }

  .step {
    grid-template-columns: 44px 1fr;
  }
}

@media (max-width: 480px) {
  .groups-grid {
    grid-template-columns: 1fr;
  }

  .footer-links {
    grid-template-columns: 1fr;
  }
}