body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f4f4;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
  }

  .container {
    background: white;
    width: 400px;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
  }

  h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #2ecc71;
    font-size: 32px;
    font-weight: 600;
  }

  .tab-buttons {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    border-bottom: 2px solid #ddd;
  }

  .tab-buttons button {
    flex: 1;
    padding: 12px 0;
    border: none;
    cursor: pointer;
    font-weight: 600;
    background-color: #f5f5f5;
    color: #333;
    border-radius: 8px 8px 0 0;
    transition: background-color 0.3s;
  }

  .tab-buttons button.active {
    background-color: #27ae60;
    color: white;
  }

  .form-group {
    margin-bottom: 18px;
  }

  label {
    font-weight: bold;
    font-size: 16px;
    display: block;
    margin-bottom: 8px;
  }

  input[type="text"],
  input[type="email"],
  input[type="password"] {
    width: 100%;
    padding: 12px;
    border-radius: 8px;
    border: 1px solid #ccc;
    font-size: 16px;
    color: #333;
    background-color: #fafafa;
    transition: border-color 0.3s;
  }

  input[type="text"]:focus,
  input[type="email"]:focus,
  input[type="password"]:focus {
    border-color: #27ae60;
    outline: none;
  }

  .submit-btn {
    background-color: #27ae60;
    color: white;
    border: none;
    width: 100%;
    padding: 14px;
    font-size: 18px;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s;
  }

  .submit-btn:hover {
    background-color: #2ecc71;
  }

  .note {
    margin-top: 20px;
    font-size: 14px;
    color: #555;
    text-align: center;
  }

  .note a {
    color: #27ae60;
    font-weight: bold;
    text-decoration: none;
  }