interface LoadingSpinnerProps {
  size?: 'sm' | 'md' | 'lg';
  className?: string;
}

export function LoadingSpinner({ size = 'md', className = '' }: LoadingSpinnerProps) {
  const sizeClasses = {
    sm: 'w-4 h-4 border-2',
    md: 'w-8 h-8 border-2',
    lg: 'w-12 h-12 border-3',
  };

  return (
    <div
      className={`${sizeClasses[size]} border-[var(--border-subtle)] border-t-[var(--accent-primary)] rounded-full animate-spin ${className}`}
      role="status"
      aria-label="Loading"
    >
      <span className="sr-only">Loading...</span>
    </div>
  );
}

interface LoadingOverlayProps {
  message?: string;
}

export function LoadingOverlay({ message = 'Loading...' }: LoadingOverlayProps) {
  return (
    <div className="fixed inset-0 bg-black/50 backdrop-blur-sm flex items-center justify-center z-50">
      <div className="bg-[var(--bg-primary)] border border-[var(--border-subtle)] rounded-lg p-6 flex flex-col items-center gap-4">
        <LoadingSpinner size="lg" />
        <p className="text-sm text-[var(--text-secondary)]">{message}</p>
      </div>
    </div>
  );
}

interface LoadingStateProps {
  message?: string;
  className?: string;
}

export function LoadingState({ message = 'Loading...', className = '' }: LoadingStateProps) {
  return (
    <div className={`flex flex-col items-center justify-center gap-3 py-12 ${className}`}>
      <LoadingSpinner size="md" />
      <p className="text-sm text-[var(--text-secondary)]">{message}</p>
    </div>
  );
}