body {
  margin: 0;
  padding: 0;
  background: radial-gradient(ellipse at center, #1a1a1a 0%, #000000 100%);
  color: #ffffff;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  text-align: center;
}

#clock {
  font-size: 6em;
  letter-spacing: 0.05em;
  text-shadow: 0 0 20px #ffffff;
}

.gradient-text {
  background: linear-gradient(270deg, #ffffff, #000000, #ffffff);
  background-size: 400% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientShift 5s ease infinite;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}