/* Sticky Navigation Performance Optimizations */

/* Use transform instead of changing position for better performance */
.sticky-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transform: translateY(-100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
  backface-visibility: hidden;
}

.sticky-nav.visible {
  transform: translateY(0);
}

/* Optimize scroll performance */
.scroll-container {
  transform: translateZ(0);
  -webkit-overflow-scrolling: touch;
}

/* Reduce paint operations during scroll */
.nav-item {
  will-change: auto;
  backface-visibility: hidden;
}

.nav-item:hover {
  will-change: transform;
}

/* Optimize animations */
@media (prefers-reduced-motion: no-preference) {
  .nav-transition {
    transition: all 0.2s ease-out;
  }
}

@media (prefers-reduced-motion: reduce) {
  .nav-transition {
    transition: none;
  }
}

/* GPU acceleration for smooth scrolling */
.smooth-scroll {
  scroll-behavior: smooth;
  transform: translateZ(0);
}

/* Intersection observer optimizations */
.lazy-load {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.3s ease-out, transform 0.3s ease-out;
}

.lazy-load.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Prevent layout shifts */
.nav-placeholder {
  height: var(--nav-height, 80px);
  visibility: hidden;
}

/* Mobile optimizations */
@media (max-width: 768px) {
  .sticky-nav {
    transform: translateY(-100%);
  }
  
  .mobile-nav-toggle {
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
  }
}