/* UI Components Styles */

/* Loading Overlay */
.loading-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

[data-theme="dark"] .loading-overlay {
  background: rgba(0, 0, 0, 0.9);
}

.loading-overlay.active {
  opacity: 1;
  visibility: visible;
}

.loading-content {
  text-align: center;
}

.loading-spinner {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--space-md);
  position: relative;
}

.spinner-ring {
  position: absolute;
  width: 100%;
  height: 100%;
  border: 3px solid transparent;
  border-top-color: var(--ai-primary);
  border-radius: 50%;
  animation: spin 1.5s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
}

.spinner-ring:nth-child(2) {
  animation-delay: 0.15s;
  width: 80%;
  height: 80%;
  top: 10%;
  left: 10%;
  border-top-color: var(--ai-secondary);
}

.spinner-ring:nth-child(3) {
  animation-delay: 0.3s;
  width: 60%;
  height: 60%;
  top: 20%;
  left: 20%;
  border-top-color: var(--ai-accent);
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.loading-message {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin: 0;
}

/* Skeleton Loader */
.skeleton-loader {
  animation: fadeIn 0.3s ease;
}

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

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

.skeleton-card {
  padding: var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-md);
}

.skeleton-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.skeleton-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
}

.skeleton-title {
  height: 20px;
  width: 60%;
  margin-bottom: var(--space-sm);
}

.skeleton-text {
  height: 14px;
  margin-bottom: var(--space-xs);
}

.skeleton-button {
  height: 36px;
  width: 100px;
  margin-top: var(--space-md);
  border-radius: var(--radius-md);
}

.skeleton-list-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  border-bottom: 1px solid var(--border-light);
}

.skeleton-content {
  flex: 1;
}

.skeleton-table-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  padding: var(--space-md);
  border-bottom: 1px solid var(--border-light);
}

.skeleton-cell {
  height: 16px;
}

/* Toast Notifications */
.toast {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  max-width: 400px;
  z-index: 10001;
  transform: translateX(calc(100% + var(--space-xl)));
  transition: transform 0.3s ease;
}

.toast.show {
  transform: translateX(0);
}

.toast-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.toast-success {
  border-left: 4px solid var(--success);
}

.toast-success .toast-icon {
  color: var(--success);
}

.toast-error {
  border-left: 4px solid var(--error);
}

.toast-error .toast-icon {
  color: var(--error);
}

.toast-warning {
  border-left: 4px solid var(--warning);
}

.toast-warning .toast-icon {
  color: var(--warning);
}

.toast-info {
  border-left: 4px solid var(--info);
}

.toast-info .toast-icon {
  color: var(--info);
}

.toast-content {
  flex: 1;
}

.toast-message {
  margin: 0;
  color: var(--text-primary);
  font-size: 0.875rem;
  line-height: 1.4;
}

.toast-close {
  flex-shrink: 0;
  background: transparent;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: var(--space-xs);
  margin: calc(var(--space-xs) * -1);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.toast-close:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

/* Error State */
.error-state {
  text-align: center;
  padding: var(--space-3xl) var(--space-lg);
}

.error-icon {
  color: var(--error);
  margin-bottom: var(--space-lg);
}

.error-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.error-message {
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

.error-retry {
  margin-top: var(--space-lg);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: var(--space-3xl) var(--space-lg);
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: var(--space-lg);
  opacity: 0.5;
}

.empty-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.empty-message {
  color: var(--text-secondary);
  max-width: 400px;
  margin: 0 auto;
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  margin-top: var(--space-2xl);
}

.pagination-btn {
  min-width: 36px;
  height: 36px;
  padding: 0 var(--space-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.pagination-btn:hover:not(:disabled) {
  background: var(--bg-secondary);
  border-color: var(--brand-primary);
  color: var(--brand-primary);
}

.pagination-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.pagination-btn.active {
  background: var(--brand-primary);
  border-color: var(--brand-primary);
  color: white;
}

.pagination-ellipsis {
  padding: 0 var(--space-sm);
  color: var(--text-tertiary);
}

.pagination-prev,
.pagination-next {
  padding: 0;
}

/* Responsive */
@media (max-width: 768px) {
  .toast {
    right: var(--space-md);
    bottom: var(--space-md);
    left: var(--space-md);
    max-width: none;
  }
  
  .loading-spinner {
    width: 48px;
    height: 48px;
  }
  
  .error-state,
  .empty-state {
    padding: var(--space-xl);
  }
  
  .pagination {
    gap: 2px;
  }
  
  .pagination-btn {
    min-width: 32px;
    height: 32px;
    font-size: 0.875rem;
  }
}