#fireworks-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    pointer-events: none;
    z-index: 9999;
  }

  #startFireworksBtn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 9999;
    font-size: 1.2rem;
    padding: 0.6rem 1rem;
    cursor: pointer;
    background: #ff0;
    border: 2px solid #000;
    border-radius: 8px;
  }

  .firework-rocket {
    position: absolute;
    bottom: 0;
    width: 8px;
    height: 8px;
    transform: translateX(0);
    pointer-events: none;
  }

  .firework-rocket-inner {
    width: 100%;
    height: 100%;
    border-radius: 100%;
    margin-left: 2px;
  }

  .firework-spark {
    position: absolute;
    width: 4px;
    height: 4px;
    border-radius: 2px;
    pointer-events: none;
    opacity: 0.8;
  }

  .firework-fragment {
    position: absolute;
    width: 6px;
    height: 6px;
    border-radius: 3px;
    opacity: 0.9;
    pointer-events: none;
  }