body {
  margin: 0;
  height: 100vh;
  overflow: hidden;
  background: radial-gradient(circle at bottom, #000010 0%, #000 100%);
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  color: white;
  font-family: "Segoe UI", sans-serif;
}

/* Aurora effect (top half) */
.aurora {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 50vh;
  overflow: hidden;
  background: linear-gradient(120deg, #00ffff33, #0088ff22, #ff00ff33);
  filter: blur(60px);
  animation: auroraMove 12s ease-in-out infinite alternate;
}

@keyframes auroraMove {
  0% {
    background-position: 0% 50%;
    transform: scale(1) rotate(0deg);
  }
  50% {
    background-position: 100% 50%;
    transform: scale(1.1) rotate(2deg);
  }
  100% {
    background-position: 0% 50%;
    transform: scale(1) rotate(-2deg);
  }
}

/* Starry or bubble-like rising particles (bottom half) */
.particle {
  position: absolute;
  bottom: 0;
  width: 0;
  height: 0;
  opacity: 0.8;
  clip-path: polygon(
    50% 0%,
    /* top */ 60% 40%,
    /* upper right */ 100% 50%,
    /* right */ 60% 60%,
    /* lower right */ 50% 100%,
    /* bottom */ 40% 60%,
    /* lower left */ 0% 50%,
    /* left */ 40% 40% /* upper left */
  );
  background: radial-gradient(circle, #e4ebeb, #667b85);
  animation: rise linear infinite, twinkle 2s ease-in-out infinite alternate;
  z-index: 2;
}

@keyframes rise {
  0% {
    transform: translateY(0) scale(0.5);
    opacity: 0.3;
  }
  50% {
    opacity: 1;
    transform: translateY(-50vh) scale(1.2);
  }
  100% {
    transform: translateY(-100vh) scale(0.3);
    opacity: 0;
  }
}

@keyframes glow {
  from {
    text-shadow: 0 0 10px #00eaff, 0 0 20px #00eaff, 0 0 30px #0088ff;
  }
  to {
    text-shadow: 0 0 20px #00ffee, 0 0 40px #00ffff, 0 0 60px #00aaff;
  }
}