/* Critical CSS for above-the-fold content */
:root {
  --primary-color: #4f46e5;
  --secondary-color: #7c3aed;
  --background-color: #ffffff;
  --text-color: #111827;
  --error-color: #ef4444;
  --success-color: #10b981;
  --border-radius: 8px;
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--background-color);
  color: var(--text-color);
}

/* Loading spinner */
.loading-spinner {
  width: 40px;
  height: 40px;
  border: 4px solid rgba(0, 0, 0, 0.1);
  border-radius: 50%;
  border-top-color: var(--primary-color);
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Basic layout styles */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
}

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

h2 {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

p {
  margin-bottom: 1rem;
  line-height: 1.5;
}

/* Button styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
  border: none;
}

.btn-primary:hover {
  background-color: #4338ca;
}

/* Header styles */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* Hero section */
.hero {
  padding-top: 80px;
  min-height: 80vh;
  display: flex;
  align-items: center;
}