body {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: linear-gradient(135deg, #2b2f77, #4e6cf0);
  overflow: hidden;
  position: relative;
}

/* Weiche animierte Formen */
body::before,
body::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle at center, rgba(255,255,255,0.15), transparent 70%);
  animation: float 10s ease-in-out infinite;
}

body::after {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle at center, rgba(255,255,255,0.1), transparent 80%);
  animation-delay: 5s;
}

@keyframes float {
  0%, 100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(50px, -50px);
  }
}
#loginBox {
      z-index: 1;
      background: rgba(255, 255, 255, 0.1);
      backdrop-filter: blur(15px);
      border-radius: 20px;
      padding: 2rem;
      width: 100%;
      max-width: 400px;
      box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
      color: #fff;
      animation: fadeIn 1.2s ease;
    }

    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(20px); }
      to { opacity: 1; transform: translateY(0); }
    }

    .btn-gradient {
      background: linear-gradient(to right, #6a5af9, #00c0ff);
      border: none;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .btn-gradient:hover {
      transform: translateY(-2px);
      box-shadow: 0 5px 15px rgba(0, 192, 255, 0.4);
    }