body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background: #111;
  color: #fff;
  scroll-behavior: smooth;
}

header, section {
  min-height: 100vh;
  padding: 4rem 2rem;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  opacity: 0;
  transform: translateY(50px);
  animation: fadeInUp 1s ease forwards;
}

header {
  animation-delay: 0.2s;
}
section:nth-child(2) {
  background: #222;
  animation-delay: 0.4s;
}
section:nth-child(3) {
  background: #333;
  animation-delay: 0.6s;
}

h1, h2, p {
  margin: 1rem 0;
  text-align: center;
}

a.button {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.75rem 1.5rem;
  background: #0af;
  color: white;
  text-decoration: none;
  border-radius: 8px;
  transition: transform 0.3s ease;
}

a.button:hover {
  transform: scale(1.1);
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}