/* ============================================
   Animation & Transition Utilities
   ============================================ */

/* Fade In Animation */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

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

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

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

/* Scale Animations */
@keyframes scaleUp {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes scaleDown {
  from {
    opacity: 0;
    transform: scale(1.1);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Slide Animations */
@keyframes slideInLeft {
  from {
    transform: translateX(-100%);
  }
  to {
    transform: translateX(0);
  }
}

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

/* Bounce Animation */
@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  60% {
    transform: translateY(-5px);
  }
}

/* Pulse Animation */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.8;
    transform: scale(1.05);
  }
}

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

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

.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-bg-secondary) 25%,
    var(--color-bg-tertiary) 50%,
    var(--color-bg-secondary) 75%
  );
  background-size: 200% 100%;
  animation: skeleton 1.5s ease-in-out infinite;
  border-radius: var(--radius-base);
}

/* Animate on Scroll */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

.animate-on-scroll[data-delay="100"] {
  transition-delay: 0.1s;
}

.animate-on-scroll[data-delay="200"] {
  transition-delay: 0.2s;
}

.animate-on-scroll[data-delay="300"] {
  transition-delay: 0.3s;
}

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

.hover-lift:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

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

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

.hover-glow {
  position: relative;
  transition: box-shadow var(--transition-base);
}

.hover-glow:hover {
  box-shadow: 0 0 20px var(--color-secondary);
}

/* Tilt Effect */
.tilt-effect {
  transform-style: preserve-3d;
  transition: transform var(--transition-base);
}

/* Loading Spinner Variants */
.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--color-bg-tertiary);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.dots-spinner {
  display: inline-flex;
  gap: 8px;
}

.dots-spinner span {
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 50%;
  animation: bounce-dots 1.4s infinite ease-in-out both;
}

.dots-spinner span:nth-child(1) {
  animation-delay: -0.32s;
}

.dots-spinner span:nth-child(2) {
  animation-delay: -0.16s;
}

@keyframes bounce-dots {
  0%, 80%, 100% {
    transform: scale(0);
  }
  40% {
    transform: scale(1);
  }
}

/* Progress Bar Animation */
.progress-bar {
  height: 4px;
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.progress-bar-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-base);
}

.progress-bar-indeterminate {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 30%;
  background: var(--color-primary);
  animation: progress-indeterminate 1.5s ease-in-out infinite;
}

@keyframes progress-indeterminate {
  0% {
    left: -30%;
  }
  100% {
    left: 100%;
  }
}

/* Toast/Notification Animations */
.toast {
  animation: slideInRight 0.3s ease;
}

.toast.removing {
  animation: slideOutRight 0.3s ease forwards;
}

@keyframes slideOutRight {
  to {
    transform: translateX(120%);
    opacity: 0;
  }
}

/* Page Transition */
.page-transition-enter {
  opacity: 0;
  transform: translateX(20px);
}

.page-transition-enter-active {
  opacity: 1;
  transform: translateX(0);
  transition: opacity 0.3s, transform 0.3s;
}

.page-transition-exit {
  opacity: 1;
}

.page-transition-exit-active {
  opacity: 0;
  transform: translateX(-20px);
  transition: opacity 0.3s, transform 0.3s;
}

/* Ripple Effect */
.ripple {
  position: relative;
  overflow: hidden;
}

.ripple::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.ripple:active::after {
  width: 300px;
  height: 300px;
}

/* Parallax Scroll */
.parallax {
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

/* Feature Card Animations */
.feature-card {
  opacity: 0;
  transform: translateY(50px) scale(0.95);
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.feature-card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: var(--shadow-xl);
}

/* Service Card Hover */
.service-card {
  transition: all var(--transition-base);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

/* Button Loading State */
.btn-loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}

.btn-loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  top: 50%;
  left: 50%;
  margin-left: -8px;
  margin-top: -8px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

/* Network Status Indicator */
.network-status {
  position: fixed;
  bottom: 20px;
  right: 20px;
  padding: var(--spacing-3) var(--spacing-4);
  background: var(--color-success);
  color: white;
  border-radius: var(--radius-base);
  box-shadow: var(--shadow-lg);
  transform: translateY(100px);
  opacity: 0;
  transition: all var(--transition-base);
  z-index: var(--z-tooltip);
}

.network-status.offline {
  background: var(--color-error);
  transform: translateY(0);
  opacity: 1;
}

.network-status.online {
  background: var(--color-success);
  transform: translateY(0);
  opacity: 1;
  animation: slideOutDown 0.3s ease 2s forwards;
}

@keyframes slideOutDown {
  to {
    transform: translateY(100px);
    opacity: 0;
  }
}