body {
    background-color: #121212;
    font-family: 'Segoe UI', sans-serif;
  }

  .signup-container {
    max-width: 500px;
    margin: 10vh auto;
    background: #1e1e1e;
    padding: 40px;
    border-radius: 12px;
    color: #fff;
    box-shadow: 0 0 20px rgba(255, 102, 0, 0.4);
  }

  .signup-container h2 {
    text-align: center;
    margin-bottom: 30px;
    font-weight: bold;
    font-size: 26px;
  }

  .signup-container input {
    width: 100%;
    padding: 12px;
    margin-top: 6px;
    margin-bottom: 16px;
    background: #2c2c2c;
    border: none;
    border-radius: 6px;
    color: #fff;
    font-size: 15px;
  }

  .signup-container input:focus {
    outline: 2px solid #ff6600;
    background: #333;
  }

  .signup-container button {
    width: 100%;
    padding: 12px;
    background: #ff6600;
    border: none;
    color: white;
    font-weight: bold;
    font-size: 16px;
    border-radius: 6px;
    transition: background 0.3s ease;
  }

  .signup-container button:hover {
    background: #e65c00;
  }

  .error {
    color: #ff4d4d;
    font-size: 13px;
  }

  .login-loader {
    display: none;
    text-align: center;
    margin-top: 20px;
  }