/* Base reset & body */
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: 'Segoe UI', sans-serif;
  color: #fff;
  background: linear-gradient(135deg, #667eea, #764ba2, #ff6a00);
  background-size: 400% 400%;
  animation: gradientBG 15s ease infinite;
}

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

main {
  flex: 1;
  position: relative;
  z-index: 1;
}