/* Critical CSS for above-the-fold content */

/* Base reset and typography */
*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f8f9fa;
}

/* Header and navigation - critical for first paint */
.site-header {
  background: #1a1a1a;
  color: white;
  padding: 1rem;
  position: sticky;
  top: 0;
  z-index: 100;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  text-decoration: none;
  color: #00d4aa;
}

.nav-menu {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 2rem;
}

.nav-menu a {
  color: white;
  text-decoration: none;
  transition: color 0.3s;
  font-weight: 500;
}

.nav-menu a:hover {
  color: #00d4aa;
}

/* Hero section - critical for first paint */
.hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 3rem 2rem;
  color: white;
  text-align: center;
  margin-bottom: 2rem;
}

.hero h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin: 0 0 0.5rem 0;
}

/* Loading states */
.loading {
  opacity: 0.6;
  pointer-events: none;
}

/* Mobile optimizations */
@media (max-width: 768px) {
  .hero {
    padding: 2rem 1rem;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .nav-menu {
    display: none; /* Will be handled by JS mobile menu */
  }
}