/* Animations - Keyframes and Transition Utilities */

/* Fade In Animation */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Slide Up Animation */
@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Grow Animation */
@keyframes grow {
  from {
    height: 0;
    opacity: 0;
  }
  to {
    height: var(--grow-height, auto);
    opacity: 1;
  }
}

/* Scale In Animation */
@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Animation Classes */
.fade-in {
  animation: fadeIn var(--transition-base) ease-out forwards;
}

.slide-up {
  animation: slideUp var(--transition-base) ease-out forwards;
}

.scale-in {
  animation: scaleIn var(--transition-base) ease-out forwards;
}

/* Staggered Animation Support */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow) ease-out, transform var(--transition-slow) ease-out;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .animate-on-scroll {
    opacity: 1;
    transform: none;
  }
}

/* Legacy Animation Classes (for backward compatibility during migration) */
.float-in {
  animation: slideUp 500ms ease-in-out forwards;
  animation-delay: calc(var(--animation-order, 0) * 200ms);
}

.appear {
  animation: fadeIn 500ms ease-in-out forwards;
  animation-delay: calc(var(--animation-order, 0) * 200ms);
}

.appear-2s {
  animation: fadeIn 2000ms ease-in-out forwards;
  animation-delay: calc(var(--animation-order, 0) * 200ms);
}

.grow {
  animation: grow 500ms ease-in-out forwards;
  animation-delay: calc(var(--animation-order, 0) * 200ms);
}