body {
  background: linear-gradient(-45deg, #0f2027, #203a43, #2c5364);
  background-size: 400% 400%;
  animation: gradientBG 10s ease infinite;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

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

.login-card {
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.1);
  border-radius: 15px;
  padding: 2rem;
  box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
  color: white;
}

.form-control {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: white;
}

.form-control::placeholder {
  color: rgba(255, 255, 255, 0.6);
}