/* ================================================
   KEYFRAMES
   ================================================ */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes slideInRight {
  from { transform: translateX(20px); opacity: 0; }
  to   { transform: translateX(0); opacity: 1; }
}
@keyframes scaleIn {
  from { transform: scale(0.92); opacity: 0; }
  to   { transform: scale(1); opacity: 1; }
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}
@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
@keyframes progress {
  from { width: 0; }
}
@keyframes countUp {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes ripple {
  from { transform: scale(0); opacity: 0.6; }
  to   { transform: scale(2.5); opacity: 0; }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-4px); }
}

/* ================================================
   UTILITY CLASSES
   ================================================ */
.animate-fade-in     { animation: fadeIn 200ms ease; }
.animate-fade-in-up  { animation: fadeInUp 250ms ease; }
.animate-scale-in    { animation: scaleIn 200ms ease; }
.animate-pulse       { animation: pulse 2s ease-in-out infinite; }
.animate-spin        { animation: spin 0.8s linear infinite; }
.animate-float       { animation: float 3s ease-in-out infinite; }

/* Page transition */
.page-enter {
  animation: fadeInUp 200ms ease both;
}

/* Staggered list items */
.stagger-item {
  animation: fadeInUp 200ms ease both;
}
.stagger-item:nth-child(1)  { animation-delay: 0ms; }
.stagger-item:nth-child(2)  { animation-delay: 40ms; }
.stagger-item:nth-child(3)  { animation-delay: 80ms; }
.stagger-item:nth-child(4)  { animation-delay: 120ms; }
.stagger-item:nth-child(5)  { animation-delay: 160ms; }
.stagger-item:nth-child(6)  { animation-delay: 200ms; }
.stagger-item:nth-child(7)  { animation-delay: 240ms; }
.stagger-item:nth-child(8)  { animation-delay: 280ms; }

/* Loading spinner */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border-light);
  border-top-color: var(--color-green);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}
.spinner-sm { width: 14px; height: 14px; border-width: 2px; }
.spinner-lg { width: 32px; height: 32px; border-width: 3px; }

/* Progress bar animation */
.progress-bar-fill { animation: progress 800ms ease-out both; }

/* Card hover micro-interaction */
.card-interactive {
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}
.card-interactive:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
  border-color: var(--color-border-light);
}
.card-interactive:active { transform: translateY(0); }

/* Ripple effect on buttons */
.btn { position: relative; overflow: hidden; }
.btn::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  background: rgba(255,255,255,0.1);
  border-radius: inherit;
  transform: scale(0);
  opacity: 0;
  transition: transform 0.4s, opacity 0.4s;
}
.btn:active::after {
  transform: scale(1);
  opacity: 1;
  transition: 0s;
}

/* Value change animation */
.value-changed {
  animation: countUp 300ms ease;
}

/* Pulsing dot (status online) */
.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-green);
  position: relative;
}
.pulse-dot::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid var(--color-green);
  animation: pulse 1.5s ease-in-out infinite;
}

/* Tab transition */
.tab-content { animation: fadeIn 150ms ease; }

/* Number transition */
@keyframes numberRoll {
  from { transform: translateY(-50%); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}
.number-roll { animation: numberRoll 300ms ease; overflow: hidden; }

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