/**
 * Animations & Micro-interactions - Leave Tracker Design System
 * Subtle animations that enhance UX without being distracting
 */

/* ==================== Skeleton Loading ==================== */

.skeleton {
  background: linear-gradient(
    90deg,
    var(--muted) 25%,
    var(--border) 50%,
    var(--muted) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

@keyframes shimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* Skeleton variants */
.skeleton-text {
  height: 1rem;
  width: 100%;
}

.skeleton-title {
  height: 1.5rem;
  width: 60%;
}

.skeleton-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
}

.skeleton-card {
  height: 120px;
}

/* ==================== Card Animations ==================== */

.card-enter {
  animation: cardEnter var(--transition-slow) ease-out;
}

@keyframes cardEnter {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Staggered card entrance */
.card-stagger:nth-child(1) { animation-delay: 0ms; }
.card-stagger:nth-child(2) { animation-delay: 50ms; }
.card-stagger:nth-child(3) { animation-delay: 100ms; }
.card-stagger:nth-child(4) { animation-delay: 150ms; }
.card-stagger:nth-child(5) { animation-delay: 200ms; }
.card-stagger:nth-child(6) { animation-delay: 250ms; }

/* ==================== Button Feedback ==================== */

.btn:active {
  transform: scale(0.98);
}

/* Ripple effect for buttons */
.btn-ripple {
  position: relative;
  overflow: hidden;
}

.btn-ripple::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  pointer-events: none;
  background-image: radial-gradient(circle, #fff 10%, transparent 10.01%);
  background-repeat: no-repeat;
  background-position: 50%;
  transform: scale(10, 10);
  opacity: 0;
  transition: transform 0.5s, opacity 1s;
}

.btn-ripple:active::after {
  transform: scale(0, 0);
  opacity: 0.3;
  transition: 0s;
}

/* ==================== Fade Animations ==================== */

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

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

.fade-in-up {
  animation: fadeInUp var(--transition-slow) ease-out;
}

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

.fade-in-down {
  animation: fadeInDown var(--transition-slow) ease-out;
}

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

/* ==================== Pulse & Attention ==================== */

.pulse {
  animation: pulse 2s infinite;
}

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

.pulse-ring {
  animation: pulseRing 2s infinite;
}

@keyframes pulseRing {
  0% {
    box-shadow: 0 0 0 0 oklch(from var(--primary) l c h / 0.4);
  }
  70% {
    box-shadow: 0 0 0 10px oklch(from var(--primary) l c h / 0);
  }
  100% {
    box-shadow: 0 0 0 0 oklch(from var(--primary) l c h / 0);
  }
}

/* Notification badge pulse */
.badge-pulse {
  position: relative;
}

.badge-pulse::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  animation: badgePulse 2s infinite;
}

@keyframes badgePulse {
  0% {
    box-shadow: 0 0 0 0 oklch(from var(--destructive) l c h / 0.6);
  }
  70% {
    box-shadow: 0 0 0 8px oklch(from var(--destructive) l c h / 0);
  }
  100% {
    box-shadow: 0 0 0 0 oklch(from var(--destructive) l c h / 0);
  }
}

/* ==================== Slide Animations ==================== */

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

@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

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

@keyframes slideInLeft {
  from {
    transform: translateX(-100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* ==================== Scale Animations ==================== */

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

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

.pop-in {
  animation: popIn var(--transition-base) cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes popIn {
  from {
    transform: scale(0.8);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

/* ==================== Spinner ==================== */

.spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner-sm {
  width: 16px;
  height: 16px;
}

.spinner-lg {
  width: 32px;
  height: 32px;
  border-width: 3px;
}

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

/* ==================== Hover Effects ==================== */

.hover-lift {
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

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

.hover-glow:hover {
  box-shadow: 0 0 20px oklch(from var(--primary) l c h / 0.3);
}

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

.hover-scale:hover {
  transform: scale(1.02);
}

/* ==================== Page Transitions ==================== */

.page-enter {
  animation: pageEnter var(--transition-slow) ease-out;
}

@keyframes pageEnter {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==================== Status Indicators ==================== */

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.status-dot-success {
  background: var(--success);
}

.status-dot-warning {
  background: var(--warning);
  animation: statusBlink 2s infinite;
}

.status-dot-danger {
  background: var(--destructive);
  animation: statusBlink 1s infinite;
}

@keyframes statusBlink {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.4;
  }
}

/* ==================== Count Up Animation ==================== */

.count-up {
  animation: countUp 0.5s ease-out forwards;
}

@keyframes countUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==================== Reduced Motion Support ==================== */

@media (prefers-reduced-motion: reduce) {
  .skeleton,
  .card-enter,
  .fade-in,
  .fade-in-up,
  .fade-in-down,
  .pulse,
  .pulse-ring,
  .badge-pulse,
  .slide-in-right,
  .slide-in-left,
  .scale-in,
  .pop-in,
  .spinner,
  .hover-lift,
  .hover-glow,
  .hover-scale,
  .page-enter,
  .status-dot-warning,
  .status-dot-danger,
  .count-up {
    animation: none !important;
    transition: none !important;
  }
}