/**
 * Animation System
 * Based on FM-NEXUS design
 */

/* ============================================
   FADE IN
   ============================================ */
.animate-fade-in {
  animation: fade-in 0.6s ease-out forwards;
  opacity: 0;
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* ============================================
   SLIDE UP
   ============================================ */
.animate-slide-up {
  animation: slide-up 0.6s ease-out forwards;
  opacity: 0;
  transform: translateY(20px);
}

@keyframes slide-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Stagger delays for sequential animations */
.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; }

/* ============================================
   FLOAT ANIMATION
   ============================================ */
.animate-float {
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-20px);
  }
}

/* ============================================
   BOUNCE (для scroll indicator)
   ============================================ */
.animate-bounce {
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  60% {
    transform: translateY(-5px);
  }
}

/* ============================================
   SCALE IN
   ============================================ */
.animate-scale-in {
  animation: scale-in 0.3s ease-out;
}

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

/* ============================================
   ROTATE (для loading)
   ============================================ */
.animate-spin {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* ============================================
   SHIMMER (для loading placeholders)
   ============================================ */
.animate-shimmer {
  animation: shimmer 2s infinite;
  background: linear-gradient(
    90deg,
    var(--muted) 0%,
    var(--accent) 50%,
    var(--muted) 100%
  );
  background-size: 200% 100%;
}

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

/* ============================================
   PERFORMANCE OPTIMIZATION
   ============================================ */
.will-animate {
  will-change: transform, opacity;
}

/* Reduce motion для пользователей с настройками доступности */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}