body {
  margin: 0;
  padding: 0;
  background: linear-gradient(135deg, #0b0c10, #1f2833);
  font-family: 'Poppins', sans-serif;
  color: #ffffff;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.container {
  text-align: center;
}

.title {
  font-size: 32px;
  margin-bottom: 30px;
  color: #45a29e;
}

.activate-button {
  padding: 15px 30px;
  font-size: 20px;
  font-weight: bold;
  background-color: #66fcf1;
  color: #0b0c10;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 0 10px #66fcf1;
}

.activate-button:hover {
  background-color: #45a29e;
  box-shadow: 0 0 20px #66fcf1;
}

.activate-button.activated {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    transform: scale(1);
    box-shadow: 0 0 10px #f1c40f, 0 0 20px #f1c40f, 0 0 30px #f1c40f;
  }
  50% {
    transform: scale(1.1);
    box-shadow: 0 0 20px #f39c12, 0 0 30px #f39c12, 0 0 40px #f39c12;
  }
  100% {
    transform: scale(1);
    box-shadow: 0 0 10px #f1c40f, 0 0 20px #f1c40f, 0 0 30px #f1c40f;
  }
}

.message-div {
  margin-top: 30px;
  font-size: 18px;
  color: gold;
}

.footer {
  margin-top: 50px;
  font-size: 14px;
  color: #c5c6c7;
}