html {
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  padding: 0;
  background-color: #1a1a2e;
  color: #e0e0e0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  overflow-x: hidden;
}

header {
  text-align: center;
  padding: 2rem 1rem;
  border-bottom: 1px solid #2a2a4a;
}

.logo {
  font-size: 2.5rem;
  font-weight: 700;
  margin: 0;
}

.tagline {
  font-size: 1.1rem;
  color: #a0a0b8;
  margin: 0.5rem 0 0;
}

.hero {
  text-align: center;
  padding: 4rem 1rem;
}

.hero h2 {
  font-size: 3rem;
  margin: 0 0 1rem;
}

.hero p {
  font-size: 1.2rem;
  color: #a0a0b8;
  margin: 0;
}

.categories {
  text-align: center;
  padding: 4rem 1rem;
  max-width: 1200px;
  margin: 0 auto;
}

.categories h2 {
  font-size: 2rem;
  margin: 0 0 2rem;
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.category-card {
  background-color: #24243e;
  padding: 2rem 1rem;
  border-radius: 0.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.category-icon {
  font-size: 2rem;
}

.category-name {
  font-size: 1rem;
  font-weight: 600;
}

.about {
  text-align: center;
  padding: 4rem 1rem;
  max-width: 700px;
  margin: 0 auto;
}

.about h2 {
  font-size: 2rem;
  margin: 0 0 1.5rem;
}

.about p {
  font-size: 1.1rem;
  color: #a0a0b8;
  line-height: 1.7;
  margin: 0 0 1rem;
}

.about p:last-child {
  margin-bottom: 0;
}

footer {
  text-align: center;
  padding: 2rem 1rem;
  border-top: 1px solid #2a2a4a;
  color: #a0a0b8;
  font-size: 0.95rem;
}

footer a {
  color: #e0e0e0;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

footer p {
  margin: 0.5rem 0;
}

@media (max-width: 768px) {
  .categories-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero h2 {
    font-size: 2.5rem;
  }
}

@media (max-width: 480px) {
  .logo {
    font-size: 2rem;
  }

  .hero h2 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .categories h2,
  .about h2 {
    font-size: 1.5rem;
  }

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