:root {
  --spring-ease: cubic-bezier(0.34, 1.56, 0.64, 1);
  --smooth-ease: cubic-bezier(0.32, 0.72, 0, 1);
}

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

@keyframes fadeInDark {
  from { opacity: 0; }
  to { opacity: 0.8; }
}

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

@keyframes slideInRight {
  from { transform: translateX(30px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes slideOutLeft {
  from { transform: translateX(0); opacity: 1; }
  to { transform: translateX(-30px); opacity: 0; }
}

@keyframes slideInLeft {
  from { transform: translateX(-30px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes slideOutRight {
  from { transform: translateX(0); opacity: 1; }
  to { transform: translateX(30px); opacity: 0; }
}

@keyframes slideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

@keyframes slideDown {
  from { transform: translateY(0); }
  to { transform: translateY(100%); }
}

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

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

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

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

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

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

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

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

@keyframes shimmerCard {
  0% { background-position: -400px 0; }
  100% { background-position: 400px 0; }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-8px); }
  40% { transform: translateX(8px); }
  60% { transform: translateX(-6px); }
  80% { transform: translateX(6px); }
}

@keyframes bounceIn {
  0% { transform: scale(0.3); opacity: 0; }
  50% { transform: scale(1.08); }
  70% { transform: scale(0.92); }
  100% { transform: scale(1); opacity: 1; }
}

@keyframes checkmark {
  0% { stroke-dashoffset: 50; }
  100% { stroke-dashoffset: 0; }
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-10px) rotate(1deg); }
}

@keyframes drift {
  0% { transform: translateX(0) translateY(0); }
  25% { transform: translateX(20px) translateY(-10px); }
  50% { transform: translateX(-10px) translateY(15px); }
  75% { transform: translateX(15px) translateY(5px); }
  100% { transform: translateX(0) translateY(0); }
}

@keyframes cardShimmer {
  0%, 100% { background-position: 200% center; }
  50% { background-position: -50% center; }
}

@keyframes skeletonPulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 0.8; }
}

@keyframes enterStagger {
  from { transform: translateY(12px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

@keyframes scaleFadeIn {
  from { transform: scale(0.97); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

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

@keyframes slideEnterRight {
  from { transform: translateX(30px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes slideEnterLeft {
  from { transform: translateX(-30px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.page-enter {
  animation: scaleFadeIn 200ms var(--spring-ease) forwards;
  will-change: transform, opacity;
}

.page-leave {
  animation: fadeOut 80ms ease-out forwards;
  will-change: opacity;
}

.page-enter-reverse {
  animation: scaleFadeIn 200ms var(--spring-ease) forwards;
  will-change: transform, opacity;
}

.page-leave-reverse {
  animation: fadeOut 80ms ease-out forwards;
  will-change: opacity;
}

.modal-enter {
  animation: slideUp 350ms var(--smooth-ease) forwards;
  will-change: transform;
}

.modal-leave {
  animation: slideDown 250ms ease-in forwards;
  will-change: transform;
}

.modal-backdrop {
  will-change: opacity;
}

.toast-enter {
  animation: slideInTop 300ms var(--spring-ease) forwards;
}

.toast-leave {
  animation: slideOutTop 250ms ease-in forwards;
}

.stagger-enter > * {
  animation: enterStagger 400ms var(--spring-ease) backwards;
}

.stagger-enter > *:nth-child(1) { animation-delay: 0ms; }
.stagger-enter > *:nth-child(2) { animation-delay: 50ms; }
.stagger-enter > *:nth-child(3) { animation-delay: 100ms; }
.stagger-enter > *:nth-child(4) { animation-delay: 150ms; }
.stagger-enter > *:nth-child(5) { animation-delay: 200ms; }
.stagger-enter > *:nth-child(6) { animation-delay: 250ms; }
.stagger-enter > *:nth-child(7) { animation-delay: 300ms; }
.stagger-enter > *:nth-child(8) { animation-delay: 350ms; }

.skeleton {
  background: linear-gradient(90deg, var(--border) 25%, var(--primary-light) 50%, var(--border) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.8s ease-in-out infinite;
  border-radius: var(--radius-sm);
  will-change: background-position;
}

.skeleton-text {
  height: 14px;
  margin-bottom: 10px;
  border-radius: 4px;
}

.skeleton-text-sm {
  height: 10px;
  width: 40%;
  border-radius: 3px;
}

.skeleton-text-lg {
  height: 20px;
  width: 60%;
  border-radius: 4px;
}

.skeleton-circle {
  border-radius: 50%;
}

.skeleton-rect {
  border-radius: var(--radius-md);
}

.skeleton-card {
  border-radius: var(--radius-lg);
  height: 100px;
  width: 100%;
}

.skeleton-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
}

.spinner {
  width: 24px;
  height: 24px;
  border: 2.5px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 700ms linear infinite;
  will-change: transform;
}

.spinner-sm {
  width: 16px;
  height: 16px;
  border-width: 2px;
}

.spinner-lg {
  width: 40px;
  height: 40px;
  border-width: 3px;
}

i.ph, i.ph-fill, i.ph-bold, i.ph-duotone {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  vertical-align: middle;
  line-height: 1;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  font-size: 16px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast), box-shadow var(--transition-fast);
  touch-action: manipulation;
  min-height: 44px;
  cursor: pointer;
  outline: none;
  position: relative;
  overflow: hidden;
}

.btn:focus-visible {
  box-shadow: var(--focus-ring);
}

.btn:active {
  transform: scale(0.96);
  transition: transform 60ms var(--spring-ease);
}

.btn:disabled {
  opacity: 0.45;
  pointer-events: none;
}

.btn-primary {
  background: var(--primary);
  color: var(--text-inverse);
}

.btn-primary:active {
  background: var(--primary-dark);
}

.btn-secondary {
  background: var(--surface);
  color: var(--primary);
  border: 1.5px solid var(--primary);
}

.btn-secondary:active {
  background: var(--primary-light);
}

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
}

.btn-ghost:active {
  background: var(--bg);
}

.btn-danger {
  background: var(--danger);
  color: white;
}

.btn-danger:active {
  background: #B91C1C;
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--border);
  color: var(--text-primary);
}

.btn-outline:active {
  background: var(--bg);
}

.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  outline: none;
}

.btn-icon:focus-visible {
  box-shadow: var(--focus-ring);
}

.btn-circle {
  width: 56px;
  height: 56px;
  padding: 0;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  outline: none;
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-wrapper:focus-within {
  border-color: var(--primary);
  box-shadow: var(--focus-ring);
}

.input-wrapper .input-icon {
  position: absolute;
  left: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  pointer-events: none;
}

.input-wrapper input {
  width: 100%;
  padding: 14px 16px;
  padding-left: 46px;
  font-size: 16px;
  background: transparent;
  color: var(--text-primary);
  outline: none;
}

.input-wrapper input::placeholder {
  color: var(--text-muted);
}

.input-wrapper .input-action {
  position: absolute;
  right: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  color: var(--text-muted);
  cursor: pointer;
  background: none;
  border: none;
}

.input-wrapper.has-prefix input {
  padding-left: 60px;
}

.input-wrapper .input-prefix {
  position: absolute;
  left: 10px;
  display: flex;
  align-items: center;
  background: var(--primary-light);
  color: var(--primary);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  pointer-events: none;
}

.card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  overflow: hidden;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  font-size: 11px;
  font-weight: 600;
  border-radius: 9999px;
  letter-spacing: 0.02em;
}

.badge-success { background: var(--success-light); color: var(--success); }
.badge-pending { background: var(--pending-light); color: var(--pending); }
.badge-danger { background: var(--danger-light); color: var(--danger); }
.badge-warning { background: var(--warning-light); color: var(--warning); }
.badge-info { background: var(--primary-light); color: var(--primary); }
.badge-gray { background: var(--bg); color: var(--text-secondary); }

.toggle {
  position: relative;
  width: 52px;
  height: 28px;
  background: var(--border);
  border-radius: 14px;
  transition: background 200ms ease;
  cursor: pointer;
}

.toggle.active {
  background: var(--primary);
}

.toggle::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 24px;
  height: 24px;
  background: white;
  border-radius: 50%;
  box-shadow: var(--shadow-sm);
  transition: transform 250ms var(--spring-ease);
  will-change: transform;
}

.toggle.active::after {
  transform: translateX(24px);
}

.dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 180px;
  background: var(--surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
  padding: 6px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 150ms ease, transform 150ms ease, visibility 150ms ease;
  z-index: 50;
}

.dropdown-menu.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 14px;
  font-size: 14px;
  color: var(--text-primary);
  border-radius: 8px;
  transition: background var(--transition-fast);
  cursor: pointer;
  background: none;
  border: none;
  text-align: left;
}

.dropdown-item:hover {
  background: var(--bg);
}

.dropdown-item.active {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
}

.divider {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--text-muted);
  font-size: 13px;
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.will-change-transform {
  will-change: transform;
}

.will-change-opacity {
  will-change: opacity;
}

.contain-layout {
  contain: layout style;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  text-align: center;
  gap: 12px;
}

.empty-state-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 4px;
}

.empty-state-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.empty-state-desc {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 260px;
  line-height: 1.5;
}

.toast-action-btn {
  color: white;
  font-size: 13px;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
  padding: 8px 4px;
  flex-shrink: 0;
  background: none;
  border: none;
  cursor: pointer;
  white-space: nowrap;
}

.toast-action-btn:active {
  opacity: 0.7;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .page-enter,
  .page-leave,
  .page-enter-reverse,
  .page-leave-reverse {
    animation: none;
    opacity: 1;
    transform: none;
  }
}