* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Arial Black', Arial, sans-serif;
  height: 100vh;
  overflow: hidden;
  position: relative;
}

.disco-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(45deg, #ff006e, #8338ec, #3a86ff, #06ffa5);
  background-size: 400% 400%;
  animation: disco 3s ease-in-out infinite;
  z-index: -1;
}

@keyframes disco {
  0% {
    background-position: 0% 50%;
    filter: hue-rotate(0deg) brightness(1);
  }
  25% {
    background-position: 100% 50%;
    filter: hue-rotate(90deg) brightness(1.2);
  }
  50% {
    background-position: 100% 100%;
    filter: hue-rotate(180deg) brightness(1.5);
  }
  75% {
    background-position: 0% 100%;
    filter: hue-rotate(270deg) brightness(1.2);
  }
  100% {
    background-position: 0% 50%;
    filter: hue-rotate(360deg) brightness(1);
  }
}

.main {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  text-align: center;
}

h1 {
  font-size: 15vw;
  font-weight: 900;
  color: #fff;
  text-shadow: 
    0 0 10px rgba(255, 255, 255, 0.8),
    0 0 20px rgba(255, 255, 255, 0.6),
    0 0 30px rgba(255, 255, 255, 0.4),
    0 0 40px rgba(255, 255, 255, 0.2);
  animation: pulse 2s ease-in-out infinite alternate;
}

@keyframes pulse {
  from {
    transform: scale(1);
    opacity: 0.8;
  }
  to {
    transform: scale(1.1);
    opacity: 1;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 20vw;
  }
}