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

.fade-in {
  animation: fadeIn var(--transition-slow) ease;
}

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

.slide-up {
  animation: slideUp var(--transition-slow) ease;
}

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

.slide-down {
  animation: slideDown var(--transition-slow) ease;
}

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

.scale-in {
  animation: scaleIn var(--transition-slow) ease;
}

/* Pulse */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.pulse {
  animation: pulse 1.5s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Shake */
@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  10%, 30%, 50%, 70%, 90% {
    transform: translateX(-4px);
  }
  20%, 40%, 60%, 80% {
    transform: translateX(4px);
  }
}

.shake {
  animation: shake 0.5s ease;
}

/* Bounce */
@keyframes bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

.bounce {
  animation: bounce 0.6s ease;
}

/* Check Animation */
@keyframes checkMark {
  0% {
    stroke-dashoffset: 100;
  }
  100% {
    stroke-dashoffset: 0;
  }
}

.check-mark {
  stroke-dasharray: 100;
  animation: checkMark 0.5s ease forwards;
}

/* Ripple Effect */
@keyframes ripple {
  0% {
    transform: scale(0);
    opacity: 0.5;
  }
  100% {
    transform: scale(4);
    opacity: 0;
  }
}

.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.6);
  width: 20px;
  height: 20px;
  animation: ripple 0.6s ease-out;
  pointer-events: none;
}

/* Skeleton Loading */
@keyframes shimmer {
  0% {
    background-position: -468px 0;
  }
  100% {
    background-position: 468px 0;
  }
}

.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-bg-tertiary) 0px,
    var(--color-bg-hover) 40px,
    var(--color-bg-tertiary) 80px
  );
  background-size: 800px;
  animation: shimmer 1.5s infinite linear;
  border-radius: var(--radius-base);
}

.skeleton-text {
  height: 12px;
  margin-bottom: var(--spacing-2);
}

.skeleton-title {
  height: 20px;
  width: 60%;
  margin-bottom: var(--spacing-3);
}

.skeleton-card {
  height: 100px;
  margin-bottom: var(--spacing-2);
}

/* Progress Bar */
@keyframes progress {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(400%);
  }
}

.progress-bar {
  position: relative;
  width: 100%;
  height: 4px;
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 25%;
  height: 100%;
  background: var(--color-primary);
  animation: progress 1.5s ease-in-out infinite;
}

/* Hover Effects */
.hover-lift {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

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

/* Focus Visible */
*:focus-visible {
  outline: 2px solid var(--color-border-focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Smooth Transitions */
.smooth-height {
  transition: height var(--transition-slow);
  overflow: hidden;
}

.smooth-width {
  transition: width var(--transition-slow);
  overflow: hidden;
}

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

/* Stagger Animation */
@keyframes staggerFadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.stagger-item {
  animation: staggerFadeIn var(--transition-slow) ease both;
}

.stagger-item:nth-child(1) { animation-delay: 0ms; }
.stagger-item:nth-child(2) { animation-delay: 50ms; }
.stagger-item:nth-child(3) { animation-delay: 100ms; }
.stagger-item:nth-child(4) { animation-delay: 150ms; }
.stagger-item:nth-child(5) { animation-delay: 200ms; }
.stagger-item:nth-child(6) { animation-delay: 250ms; }
.stagger-item:nth-child(7) { animation-delay: 300ms; }
.stagger-item:nth-child(8) { animation-delay: 350ms; }
.stagger-item:nth-child(9) { animation-delay: 400ms; }
.stagger-item:nth-child(10) { animation-delay: 450ms; }

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

  .stagger-item {
    animation: none;
  }
}