/* CHRD Training Academy - Keyframe & Scroll Animations */

/* Base Reveal Rules for IntersectionObserver */
.reveal {
  opacity: 0;
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal.fade-up {
  transform: translateY(40px);
}

.reveal.fade-down {
  transform: translateY(-40px);
}

.reveal.fade-left {
  transform: translateX(40px);
}

.reveal.fade-right {
  transform: translateX(-40px);
}

.reveal.scale-up {
  transform: scale(0.92);
}

/* Active State Triggered by JS */
.reveal.active {
  opacity: 1;
  transform: translateY(0) translateX(0) scale(1);
}

/* Stagger Delay Utilities */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }

/* Continuous Keyframe Animations */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

.animate-float {
  animation: float 4s ease-in-out infinite;
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 15px rgba(0, 200, 150, 0.2); }
  50% { box-shadow: 0 0 30px rgba(0, 200, 150, 0.45); }
}

.animate-pulse-glow {
  animation: pulseGlow 3s infinite;
}

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

.skeleton {
  background: linear-gradient(90deg, #131D36 25%, #1B2645 50%, #131D36 75%);
  background-size: 200% 100%;
  animation: shimmer 1.8s infinite;
}

/* Accessibility: Respect Reduced Motion Preferences */
@media (prefers-reduced-motion: reduce) {
  .reveal {
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
  .animate-float, .animate-pulse-glow {
    animation: none !important;
  }
}