/* Critical CSS for above-the-fold content */
* { 
  margin: 0; 
  padding: 0; 
  box-sizing: border-box; 
}

body { 
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.hero { 
  min-height: 100vh; 
  display: flex; 
  align-items: center; 
  justify-content: center;
}

/* Optimized card spotlight for performance */
.card-spotlight {
  position: relative;
  border-radius: 1.5rem;
  border: 1px solid #222;
  background-color: #111;
  padding: 2rem;
  overflow: hidden;
  --mouse-x: 50%;
  --mouse-y: 50%;
  --spotlight-color: rgba(255, 255, 255, 0.05);
  will-change: transform;
  contain: layout style paint;
}

.card-spotlight::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at var(--mouse-x) var(--mouse-y), var(--spotlight-color), transparent 80%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  will-change: opacity;
}

.card-spotlight:hover::before,
.card-spotlight:focus-within::before {
  opacity: 0.6;
}

/* Loading states for better UX */
.loading-skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}