#stage {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #fafafa;
}

/* sections (visual aid; bisa disembunyikan) */
.band {
  position: absolute;
  left: 0;
  width: 100%;
  pointer-events: none;
}
/* top band occupies top 30% (visual only) */
#top-section { top: 0; height: 30vh; }
/* bottom band occupies bottom 30% */
#bottom-section { bottom: 0; height: 30vh; }

/* particle base style */
.particle {
  position: absolute;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #ffffff;
  pointer-events: none;
  will-change: transform, width, height, opacity;
  transform-origin: center center;
}


.center-screen{
  position: fixed; inset: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  background: rgba(0,0,0,.5);
  z-index: 9999;
}

.hide-loader {
  display: none;
}


.loader-dots{
  display: inline-flex;
  gap: 6px;
}

.loader-dots span{
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #CE1C1C;
  display: inline-block;
  animation: bounce 1s ease-in-out infinite;
}

.loader-dots span:nth-child(2){ animation-delay: .15s; }
.loader-dots span:nth-child(3){ animation-delay: .3s; }

@keyframes bounce{
  0%, 80%, 100% { transform: translateY(0); opacity: .6; }
  40% { transform: translateY(-8px); opacity: 1; }
}

/* animasi fade out */
.fade-out{
  opacity: 0;
  transition: opacity .6s ease;
  pointer-events: none;
}