untitled

```javascript
function showQuestComplete(reward) {
  const overlay = el("completeOverlay");
  if (!overlay) return;

  const rewardCoins = el("rewardCoins");
  if (rewardCoins) {
    rewardCoins.textContent = String(reward);
  }

  const comboText = el("comboText");
  if (comboText) {
    comboText.textContent = `STREAK x${streak}`;
  }

  const cheerText = el("cheerText");
  if (cheerText) {
    const cheers = [
      "GREAT JOB!",
      "NICE WORK!",
      "WELL DONE!",
      "AWESOME JOB!",
      "GOOD JOB!",
      "YOU DID IT!",
      "KEEP IT UP!",
      "AMAZING WORK!",
      "NICE ONE!",
      "EXCELLENT!"
    ];

    cheerText.textContent = cheers[Math.floor(Math.random() * cheers.length)];
  }

  overlay.classList.remove("show");
  void overlay.offsetWidth; // Restart the animation.
  overlay.classList.add("show");

  setTimeout(() => {
    overlay.classList.remove("show");
  }, 1500);
}
```