/* =====================================================
   BARUCH ANIMATIONS
   Smooth Micro-Interactions and Transitions
   ===================================================== */

/* =====================================================
   KEYFRAME ANIMATIONS
   ===================================================== */

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

  to {
    transform: rotate(360deg);
  }
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes fadeOut {
  from {
    opacity: 1;
  }

  to {
    opacity: 0;
  }
}

@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }

  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideOutRight {
  from {
    transform: translateX(0);
    opacity: 1;
  }

  to {
    transform: translateX(100%);
    opacity: 0;
  }
}

@keyframes slideInDown {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }

  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes slideInUp {
  from {
    transform: translateY(100%);
    opacity: 0;
  }

  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes scaleIn {
  from {
    transform: scale(0.9);
    opacity: 0;
  }

  to {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes bounce {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }
}

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }

  100% {
    background-position: 1000px 0;
  }
}

/* =====================================================
   ANIMATION UTILITY CLASSES
   ===================================================== */

.animate-fade-in {
  animation: fadeIn var(--transition-base) ease-out;
}

.animate-fade-out {
  animation: fadeOut var(--transition-base) ease-out;
}

.animate-slide-in-right {
  animation: slideInRight var(--transition-base) ease-out;
}

.animate-slide-out-right {
  animation: slideOutRight var(--transition-base) ease-out;
}

.animate-slide-in-down {
  animation: slideInDown var(--transition-base) ease-out;
}

.animate-slide-in-up {
  animation: slideInUp var(--transition-base) ease-out;
}

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

.animate-bounce {
  animation: bounce 1s ease-in-out infinite;
}

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

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

/* =====================================================
   TRANSITION UTILITIES
   ===================================================== */

.transition-all {
  transition: all var(--transition-base);
}

.transition-transform {
  transition: transform var(--transition-base);
}

.transition-colors {
  transition: color var(--transition-base), background-color var(--transition-base), border-color var(--transition-base);
}

.transition-opacity {
  transition: opacity var(--transition-base);
}

/* =====================================================
   HOVER EFFECTS
   ===================================================== */

.hover-lift {
  transition: all var(--transition-fast);
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.hover-glow {
  transition: all var(--transition-base);
}

.hover-glow:hover {
  box-shadow: var(--shadow-glow);
}

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

.hover-scale:hover {
  transform: scale(1.05);
}

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

.hover-rotate:hover {
  transform: rotate(5deg);
}

/* =====================================================
   LOADING STATES
   ===================================================== */

.skeleton {
  background: linear-gradient(90deg,
      var(--neutral-200) 0%,
      var(--neutral-100) 50%,
      var(--neutral-200) 100%);
  background-size: 200% 100%;
  animation: shimmer 2s infinite;
  border-radius: var(--radius-md);
}

.skeleton-text {
  height: 1em;
  margin-bottom: var(--space-2);
}

.skeleton-heading {
  height: 2em;
  width: 60%;
  margin-bottom: var(--space-4);
}

.skeleton-button {
  height: 40px;
  width: 120px;
  border-radius: var(--radius-lg);
}

.skeleton-card {
  height: 200px;
  border-radius: var(--radius-xl);
}

/* =====================================================
   PAGE TRANSITIONS
   ===================================================== */

.page-enter {
  animation: fadeIn var(--transition-base) ease-out;
}

.page-exit {
  animation: fadeOut var(--transition-base) ease-out;
}

/* =====================================================
   SCROLL ANIMATIONS
   ===================================================== */

.scroll-fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.scroll-fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* =====================================================
   RIPPLE EFFECT (for buttons/interactive elements)
   ===================================================== */

.ripple {
  position: relative;
  overflow: hidden;
}

.ripple::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.ripple:active::after {
  width: 300px;
  height: 300px;
}

/* =====================================================
   PROGRESS INDICATORS
   ===================================================== */

.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--neutral-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}

.progress-indeterminate {
  width: 100%;
  height: 4px;
  background: var(--neutral-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-indeterminate::before {
  content: '';
  display: block;
  height: 100%;
  width: 30%;
  background: var(--gradient-primary);
  animation: indeterminate 1.5s infinite;
}

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

  100% {
    transform: translateX(400%);
  }
}

/* =====================================================
   SMOOTH SCROLL
   ===================================================== */

html {
  scroll-behavior: smooth;
}

/* =====================================================
   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;
    scroll-behavior: auto !important;
  }
}