.reveal-element {
  opacity: 0;
  transform: translateY(20px) translateZ(0);
  will-change: transform, opacity;
  transition: opacity 0.7s var(--ease-out-expo),
              transform 0.7s var(--ease-out-expo);
}

.reveal-element.revealed {
  opacity: 1;
  transform: translateY(0) translateZ(0);
}

.reveal-element.revealed-no-anim {
  opacity: 1;
  transform: none;
}

@keyframes float {
  0%, 100% { transform: translateY(0) translateZ(0); }
  50% { transform: translateY(-10px) translateZ(0); }
}

.animate-float {
  animation: float 6s ease-in-out infinite;
  will-change: transform;
}

@keyframes pulse-glow {
  0% { box-shadow: 0 0 0 0 var(--color-primary-light); }
  70% { box-shadow: 0 0 0 16px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}

.animate-pulse-glow {
  animation: pulse-glow 2.5s infinite var(--ease-in-out-smooth);
}

@keyframes skeleton-loading {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* Skeleton optimized for rendering performance (using pseudo-element translation instead of background-position) */
.skeleton {
  background: var(--bg-tertiary);
  position: relative;
  overflow: hidden;
}

.skeleton::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.08), transparent);
  transform: translateX(-100%);
  animation: skeleton-loading 1.5s infinite;
  will-change: transform;
}

[data-theme="light"] .skeleton::after {
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
}

.page-transition {
  opacity: 0;
  transition: opacity 0.35s var(--ease-out-expo);
  will-change: opacity;
}

.page-transition-active {
  opacity: 1;
}

.stagger-in {
  opacity: 0;
  transform: scale(0.96) translateY(10px) translateZ(0);
  will-change: transform, opacity;
  animation: staggerFadeIn 0.5s var(--ease-spring) forwards;
}

@keyframes staggerFadeIn {
  to { opacity: 1; transform: scale(1) translateY(0) translateZ(0); }
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95) translateZ(0); }
  to { opacity: 1; transform: scale(1) translateZ(0); }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px) translateZ(0); }
  to { opacity: 1; transform: translateY(0) translateZ(0); }
}

.anim-fade-in {
  animation: fadeIn 0.4s var(--ease-out-expo) forwards;
  will-change: opacity;
}

.anim-scale-in {
  animation: scaleIn 0.4s var(--ease-spring) forwards;
  will-change: transform, opacity;
}

.anim-slide-up {
  animation: slideUp 0.4s var(--ease-out-expo) forwards;
  will-change: transform, opacity;
}

.dir-changing * {
  transition: none !important;
  animation: none !important;
}

/* Hard reduced-motion enforcement for accessibility and weak devices */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  .reveal-element, .stagger-in {
    opacity: 1 !important;
    transform: none !important;
  }
}

.reduced-motion .reveal-element,
.reduced-motion .stagger-in,
.reduced-motion .animate-float,
.reduced-motion .animate-pulse-glow {
  animation: none !important;
  transition: none !important;
  opacity: 1 !important;
  transform: none !important;
}