// Lightweight non-blocking toast used across pages
function showToast(message, opts) {
  try {
    opts = opts || {};
    const wrap = document.createElement("div");
    wrap.className = "cn-toast";
    wrap.textContent = message || "";
    wrap.style.position = "fixed";
    wrap.style.left = "50%";
    wrap.style.transform = "translateX(-50%)";
    wrap.style.top = opts.top || "18px";
    wrap.style.background = opts.background || "rgba(0,0,0,0.8)";
    wrap.style.color = opts.color || "#fff";
    wrap.style.padding = "8px 12px";
    wrap.style.borderRadius = "6px";
    wrap.style.zIndex = 99999;
    wrap.style.fontSize = "14px";
    wrap.style.boxShadow = "0 6px 18px rgba(0,0,0,0.25)";
    document.body.appendChild(wrap);
    setTimeout(() => {
      try {
        wrap.style.transition = "opacity 300ms ease";
        wrap.style.opacity = "0";
        setTimeout(() => {
          try {
            wrap.remove();
          } catch (_) {}
        }, 320);
      } catch (_) {}
    }, opts.duration || 3500);
  } catch (_) {}
}