body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-image: url('/imagenes/fondo_main.png');
    background-size: cover;
    background-position: center;
    flex-direction: column;
  }
  
  .back-button {
    position: absolute;
    top: 20px;
    left: 20px;
    background: #2b4a7b;
    color: white;
    border: none;
    padding: 10px;
    cursor: pointer;
    border-radius: 5px;
  }
  
  .form-container {
    background: rgba(255, 255, 255, 0.95);
    padding: 40px;
    border: 1px solid #ddd;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    text-align: center;
    width: 90%;
    max-width: 500px;
    border-radius: 10px;
  }
  
  h2 {
    margin-bottom: 20px;
    font-size: 1.8rem;
  }
  
  .form-group {
    display: flex;
    align-items: stretch;
    margin-bottom: 15px;
    border: 1px solid #000;
    border-radius: 5px;
    overflow: hidden;
  }
  
  .icon {
    background-color: #2b4a7b;
    padding: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
  }
  
  .icon img {
    width: 24px;
    height: 24px;
  }
  
  input {
    flex: 1;
    border: none;
    padding: 18px;
    font-size: 1rem;
    font-family: 'Arial', sans-serif;
  }
  
  input::placeholder {
    font-family: 'Arial', sans-serif;
  }
  
  input:focus {
    outline: none;
  }
  
  button {
    background-color: #2b4a7b;
    color: #fff;
    border: none;
    padding: 10px 60px;
    cursor: pointer;
    font-size: 1rem;
    border-radius: 5px;
    transition: background-color 0.3s ease;
  }
  
  button:hover {
    background-color: #1e3659;
  }
  
  @media (max-width: 600px) {
    .form-container {
      padding: 20px;
    }
    .form-group {
      flex-direction: column;
      align-items: stretch;
    }
    .icon {
      width: 100%;
      padding: 5px;
    }
    button {
      width: 100%;
      padding: 10px;
    }
  }