body {
  margin: 0;
  height: 100vh;
  background: black;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: Arial, sans-serif;
  overflow: hidden;
}

.container {
  text-align: center;
}

.subtitle {
  opacity: 0.6;
  margin-top: 10px;
}

button {
  margin-top: 20px;
  padding: 10px 20px;
  background: transparent;
  border: 1px solid white;
  color: white;
  cursor: pointer;
  transition: 0.3s;
}

button:hover {
  background: white;
  color: black;
}

.glitch {
  font-size: 2em;
  position: relative;
  animation: glitch 1s infinite;
}

@keyframes glitch {
  0% { text-shadow: 2px 2px red; }
  25% { text-shadow: -2px -2px blue; }
  50% { text-shadow: 2px -2px green; }
  75% { text-shadow: -2px 2px purple; }
  100% { text-shadow: 2px 2px red; }
}