/* Critical CSS - Above the fold styles */
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.6;
  color: #1f2937;
  background-color: #ffffff;
}

/* Header styles */
.header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 50;
  background-color: white;
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
}

/* Hero section */
.hero {
  padding-top: 6rem;
  padding-bottom: 3rem;
  background: linear-gradient(135deg, #3B82F6, #1E40AF);
  color: white;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease-in-out;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background-color: #3B82F6;
  color: white;
}

.btn-primary:hover {
  background-color: #2563EB;
}

/* Typography */
h1 {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h2 {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

p {
  margin-bottom: 1rem;
  line-height: 1.6;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Responsive */
@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  .btn {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
  }
}