body {
      font-family: Arial, sans-serif;
      background: linear-gradient(135deg, #6a11cb, #2575fc);
      display: flex;
      justify-content: center;
      align-items: center;
      height: 100vh;
      margin: 0;
    }

    .container {
      background: #fff;
      padding: 30px;
      border-radius: 15px;
      width: 100%;
      max-width: 400px;
      box-shadow: 0 8px 16px rgba(0,0,0,0.2);
      text-align: center;
      animation: fadeIn 0.8s ease-in-out;
    }

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

    h2 {
      margin-bottom: 20px;
      color: #333;
    }

    .form-group {
      margin-bottom: 15px;
      text-align: left;
    }

    .form-group label {
      font-size: 14px;
      color: #555;
      display: block;
      margin-bottom: 5px;
    }

    .form-group input[type="text"],
    .form-group input[type="email"],
    .form-group input[type="password"],
    .form-group input[type="tel"] {
      width: 100%;
      padding: 12px;
      border: 1px solid #ccc;
      border-radius: 8px;
      font-size: 14px;
      transition: border 0.3s;
    }

    .form-group input:focus {
      border-color: #2575fc;
      outline: none;
    }

    .form-group input[type="checkbox"] {
      margin-right: 8px;
    }

    .btn {
      width: 100%;
      padding: 12px;
      background: #2575fc;
      color: white;
      border: none;
      border-radius: 8px;
      cursor: pointer;
      font-size: 16px;
      transition: background 0.3s;
    }

    .btn:hover {
      background: #1a5ed3;
    }

    .error {
      color: red;
      font-size: 13px;
      margin-top: -8px;
      margin-bottom: 8px;
      display: none;
    }