/**
 * Reusable CSS @keyframes Animations
 *
 * Common animation patterns for Angular applications.
 * Import this file in your component styles or global styles.
 */

/* ============================================
   FADE ANIMATIONS
   ============================================ */

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

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

.fade-in {
  animation: fadeIn 0.3s ease-out;
}

.fade-out {
  animation: fadeOut 0.3s ease-in;
}

/* ============================================
   SLIDE ANIMATIONS
   ============================================ */

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

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

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

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

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

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

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

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

.slide-in-up { animation: slideInUp 0.3s ease-out; }
.slide-out-down { animation: slideOutDown 0.3s ease-in; }
.slide-in-down { animation: slideInDown 0.3s ease-out; }
.slide-out-up { animation: slideOutUp 0.3s ease-in; }
.slide-in-left { animation: slideInLeft 0.3s ease-out; }
.slide-out-left { animation: slideOutLeft 0.3s ease-in; }
.slide-in-right { animation: slideInRight 0.3s ease-out; }
.slide-out-right { animation: slideOutRight 0.3s ease-in; }

/* ============================================
   SCALE ANIMATIONS
   ============================================ */

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes scaleOut {
  from {
    opacity: 1;
    transform: scale(1);
  }
  to {
    opacity: 0;
    transform: scale(0.9);
  }
}

.scale-in { animation: scaleIn 0.2s ease-out; }
.scale-out { animation: scaleOut 0.2s ease-in; }

/* ============================================
   UTILITY ANIMATIONS
   ============================================ */

/* Loading Spinner */
@keyframes spin {
  to { transform: rotate(360deg); }
}

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

/* Skeleton Loading */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.shimmer {
  background: linear-gradient(
    90deg,
    #f0f0f0 25%,
    #e0e0e0 50%,
    #f0f0f0 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

/* Attention Pulse */
@keyframes attention-pulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.5);
  }
  50% {
    box-shadow: 0 0 0 10px rgba(59, 130, 246, 0);
  }
}

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

/* Shake (Error Feedback) */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
  20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.shake {
  animation: shake 0.5s ease-in-out;
}

/* Breathing/Pulsing */
@keyframes breathe {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.7;
    transform: scale(1.05);
  }
}

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

/* ============================================
   TOAST/NOTIFICATION ANIMATIONS
   ============================================ */

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateY(100%) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes toastOut {
  from {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  to {
    opacity: 0;
    transform: translateY(100%) scale(0.9);
  }
}

.toast-in {
  animation: toastIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.toast-out {
  animation: toastOut 0.2s ease-in forwards;
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

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