.container_form {
    display: block;
    max-width: 700px;
    background: #fff;
    margin: 2rem auto;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  }
  h1 {
    color: #232323; /* dark blue */
    margin-bottom: 0.3rem;
  }
  p.welcome {
    color: #232323; /* medium blue */
    margin-bottom: 2rem;
  }
  
  form {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
  }
  
  label {
    font-weight: 600;
    margin-bottom: 0.3rem;
    display: block;
    color: #2dacc1;
  }
  
  input[type="text"],
  input[type="email"],
  input[type="password"],
  input[type="tel"],
  input[type="upload"],
  select {
    width: 100%;
    padding: 0.5rem 0.7rem;
    border: 1.5px solid #232323;
    border-radius: 5px;
    font-size: 1rem;
    color: #232323;
    transition: border-color 0.3s ease;
  }
  input[type="text"]:focus,
  input[type="email"]:focus,
  input[type="password"]:focus,
  input[type="tel"]:focus,
  input[type="upload"]:focus,
  select:focus {
    outline: none;
    border-color: #2dacc1;
    box-shadow: 0 0 5px #2dacc1;
  }

  /* Two columns for customer info & shipping on bigger screens */
  .row {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
  }
  .row > div {
    flex: 1 1 45%;
    min-width: 250px;
  }
  
  /* Full width on smaller screens */
  @media (max-width: 600px) {
    .row {
      flex-direction: column;
    }
    .row > div {
      min-width: 100%;
    }
  }

  /* Checkbox container */
  .checkbox-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }
  .checkbox-container input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
  }
  .checkbox-container label {
    font-weight: 500;
    color: #2dacc1;
  }
  .checkbox-container a {
    color: #2dacc1;
    text-decoration: none;
  }
  .checkbox-container a:hover {
    text-decoration: underline;
  }
  
  /* Submit button */
  button[type="submit"] {
    width: 80%;
    max-width: 400px;
    margin: auto;
    background-color: #2dacc1;
    color: white;
    border: none;
    padding: 0.75rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
  }
  button[type="submit"]:hover {
    background-color: #2dacc1;
  }

  /* Error messages */
  .error {
    color: red;
    font-size: 0.9rem;
    margin-top: -0.7rem;
    margin-bottom: 0.7rem;
  }