body {
    background: #111;
    color: #eee;
    font-family: sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
  }
  .auth-container {
    background: #1e1e1e;
    padding: 2rem;
    border-radius: 1rem;
    width: 300px;
  }
  input, button {
    width: 100%;
    margin: 0.5rem 0;
    padding: 0.75rem;
    border-radius: 0.5rem;
    border: none;
  }
  button {
    background: #00ff99;
    font-weight: bold;
    color: #000;
  }