/* ==========================================================================
   ANIMATIONS & TRANSITIONS
   Instituto de Educación Superior Tecnológico Público "Nueva Esperanza"
   ========================================================================== */

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

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

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

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

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

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

@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 0 5px rgba(var(--primary-rgb), 0.2);
  }
  50% {
    box-shadow: 0 0 20px rgba(var(--primary-rgb), 0.6);
  }
}

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

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

.animate-slide-up {
  animation: slideUp var(--transition-normal) forwards cubic-bezier(0.16, 1, 0.3, 1);
}

.animate-slide-down {
  animation: slideDown var(--transition-normal) forwards cubic-bezier(0.16, 1, 0.3, 1);
}

.animate-scale-up {
  animation: scaleUp var(--transition-fast) forwards cubic-bezier(0.16, 1, 0.3, 1);
}

.animate-spin {
  animation: spin 1s linear infinite;
}

.animate-pulse {
  animation: pulseGlow 2s infinite ease-in-out;
}

/* Staggered entrance for list items / cards */
.stagger-1 { animation-delay: 50ms; }
.stagger-2 { animation-delay: 100ms; }
.stagger-3 { animation-delay: 150ms; }
.stagger-4 { animation-delay: 200ms; }
.stagger-5 { animation-delay: 250ms; }

/* Interactive Hover States */
.hover-lift {
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.hover-lift:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.hover-scale {
  transition: transform var(--transition-fast);
}

.hover-scale:hover {
  transform: scale(1.02);
}

/* Reduced Motion Override (Mandatory accessibility requirement) */
@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;
  }
}