:root {
  --bg: #0a0a0a;
  --surface: #111;
  --surface-2: #1a1a1a;
  --text: #f5f5f5;
  --text-muted: #888;
  --border: #222;
  --accent: #fff;
}

[data-theme="light"] {
  --bg: #fafafa;
  --surface: #fff;
  --surface-2: #f2f2f2;
  --text: #111;
  --text-muted: #666;
  --border: #e5e5e5;
  --accent: #000;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1rem;
}

.site-header {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border);
  background-color: var(--bg);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--text);
  text-decoration: none;
  letter-spacing: 0.01em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.main-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

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

.theme-toggle {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.theme-toggle:hover {
  transform: scale(1.05);
  border-color: var(--text-muted);
}

.hero {
  text-align: center;
  padding: 6rem 0 5rem;
}

.hero .label {
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 300;
  line-height: 1.15;
  margin-bottom: 1rem;
}

.hero .subtitle {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 32rem;
  margin: 0 auto 2rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 0.85rem 1.75rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background-color: var(--accent);
  color: var(--bg);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.directory-preview,
.benefits,
.join-cta {
  padding: 4rem 0;
}

.directory-preview h2,
.benefits h2,
.join-cta h2 {
  text-align: center;
  font-weight: 400;
  font-size: 1.75rem;
  margin-bottom: 2.5rem;
}

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

.card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

.card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}

.card-body {
  padding: 1.25rem;
}

.card .category {
  text-transform: uppercase;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 0.5rem 0 0.25rem;
}

.card p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.benefit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.benefit-icon {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--text-muted);
}

.benefit h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.benefit p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.join-cta {
  background-color: var(--surface);
  text-align: center;
}

.join-cta p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 2rem;
}

.social-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

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

.site-footer {
  background-color: var(--surface-2);
  padding: 4rem 0 3rem;
  text-align: center;
  border-top: 1px solid var(--border);
}

.footer-brand {
  font-size: 1.75rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.footer-tagline {
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.copyright,
.credit {
  font-size: 0.8rem;
  color: var(--text-muted);
  max-width: 700px;
  margin: 0 auto 1rem;
}

.credit a {
  color: var(--text);
  text-decoration: none;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

@media (max-width: 600px) {
  .header-inner {
    flex-wrap: wrap;
    gap: 0.75rem;
  }

  .main-nav {
    gap: 1rem;
  }

  .hero {
    padding: 4rem 0 3rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 280px;
    text-align: center;
  }

  .directory-preview,
  .benefits,
  .join-cta {
    padding: 3rem 0;
  }

  .directory-preview h2,
  .benefits h2,
  .join-cta h2 {
    font-size: 1.5rem;
  }

  .footer-brand {
    font-size: 1.5rem;
  }

  .copyright,
  .credit {
    font-size: 0.75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}