/**
 * PRUDENTIA brand mark.
 *
 * A sundial-inspired emblem: a rising horizon, a gnomon casting its line forward,
 * and widening arcs of time. Foresight and the passage of time — no coins,
 * charts, arrows or generic AI motifs.
 */
export function BrandMark({ className = "size-10" }: { className?: string }) {
  return (
    <svg viewBox="0 0 64 64" fill="none" className={className} aria-hidden="true">
      <defs>
        <linearGradient id="prudentia-mark" x1="8" y1="56" x2="56" y2="8" gradientUnits="userSpaceOnUse">
          <stop stopColor="var(--electric, currentColor)" />
          <stop offset="1" stopColor="var(--purple, currentColor)" />
        </linearGradient>
      </defs>
      {/* arcs of time */}
      <path d="M12 46a20 20 0 0 1 40 0" stroke="url(#prudentia-mark)" strokeWidth="2.2" strokeLinecap="round" opacity="0.95" />
      <path d="M20 46a12 12 0 0 1 24 0" stroke="url(#prudentia-mark)" strokeWidth="1.6" strokeLinecap="round" opacity="0.5" />
      {/* gnomon — the decision made today */}
      <path d="M32 46V16" stroke="url(#prudentia-mark)" strokeWidth="2.4" strokeLinecap="round" />
      <circle cx="32" cy="14" r="2.6" fill="url(#prudentia-mark)" />
      {/* horizon */}
      <path d="M8 46h48" stroke="currentColor" strokeWidth="1.4" strokeLinecap="round" opacity="0.35" />
    </svg>
  );
}