/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

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

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

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

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

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

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

/* ===== ANIMATION CLASSES ===== */
.animate-fade-in {
  animation: fadeIn var(--transition-slow) ease-out;
}

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

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

.animate-slide-in-left {
  animation: slideInLeft var(--transition-slow) ease-out;
}

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

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

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* ===== UTILITY TRANSITIONS ===== */
.transition-all {
  transition: all var(--transition);
}

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

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

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

/* ===== HOVER EFFECTS ===== */
.hover-lift {
  transition: all var(--transition);
}

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

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

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

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

.hover-brighten:hover {
  filter: brightness(1.1);
}

/* ===== LOADING STATE ===== */
.loading {
  opacity: 0.6;
  pointer-events: none;
}

.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--color-cream-dark);
  border-radius: var(--radius-full);
  border-top-color: var(--color-amber);
  animation: spin 0.8s linear infinite;
}

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

/* ===== VISIBILITY ===== */
.hidden {
  display: none !important;
}

.invisible {
  visibility: hidden;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}