"use client";

/**
 * 纯 CSS 粒子背景 - 不依赖 @tsparticles
 */
export function ParticleBackground() {
  const dots = Array.from({ length: 30 }, (_, i) => i);

  return (
    <div
      className="absolute inset-0 pointer-events-none overflow-hidden"
      aria-hidden
    >
      {dots.map((i) => (
        <div
          key={i}
          className="absolute rounded-full bg-[var(--accent)] opacity-[0.08] animate-pulse"
          style={{
            width: `${2 + (i % 4)}px`,
            height: `${2 + (i % 4)}px`,
            left: `${(i * 7) % 100}%`,
            top: `${(i * 11) % 100}%`,
            animationDelay: `${(i % 5) * 0.5}s`,
            animationDuration: `${2 + (i % 3)}s`,
          }}
        />
      ))}
    </div>
  );
}