* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Karla', sans-serif;
    background-color: hsl(148, 38%, 91%);
    color: hsl(187, 24%, 22%);
    padding: 33px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
}

form {
    background-color: white;
    padding: 32px;
    border-radius: 10px;
    max-width: 500px;
    width: 100%;
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2); 
}

h1 {
    text-align: block;
    margin-bottom: 20px;
    font-weight: 700;
    color: hsl(169, 82%, 27%);
}

label {
    display: inline-flex;
    font-weight: 400;
}

input[type="text"],
input[type="email"],
textarea {
    width: auto;
    height: 100%;
    padding: 10px 14px;
    border: 1px solid hsl(108, 71%, 67%);
    border-radius: 4px;
    font-size: 16px;
}

input[type="text"]:focus,
input[type="email"]:focus,
textarea:focus {
    border-color: hsl(169, 82%, 27%);
    outline: none;
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  
  .radio-box {
    border: 1px solid hsl(186, 15%, 59%);
    border-radius: 4px;
    padding: 16px 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    background-color: white;
    cursor: pointer;
    margin-bottom: 16px;
  }
  
  .radio-box input[type="radio"] {
    accent-color: hsl(169, 82%, 27%);
    margin: 0;
  }  

  .radio-box.selected {
    border-color: green;
    background-color: hsl(148, 38%, 91%);
  }
textarea {
    height: 100px;
    width: 100%;
    resize: vertical;
}

textarea:focus {
    border-color: hsl(169, 82%, 27%);
    outline: none;
  }
  

button {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 5px;
    background-color: hsl(169, 82%, 27%);
    color: white;
    font-weight: 700;
    cursor: pointer;    
    font-size: 16px;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: hsl(169, 82%, 22%);
}

.attribution {
    margin-top: 32px;
    text-align: center;
    font-size: 14.4px;
    color: hsl(187, 24%, 22%);
}

.attribution a {
    color: hsl(169, 82%, 27%);
    text-decoration: none;
}

.attribution a:hover {
    text-decoration: underline;
}

.error {
    color: hsl(0, 66%, 54%);
    font-size: 12px;
    display: block;
  }

  input.input-error,
  textarea.input-error,
  select.input-error {
      border: 2px solid hsl(0, 66%, 54%);
}

.success-message {
    background-color: rgb(24, 54, 24);
    color: white;
    padding: 10px 20px;
    border-radius: 5px; 
    font-family: Arial, sans-serif;
    width: 50%; 
    max-width: 600px; 
    margin: 10px auto; 
    text-align: center;
    position: fixed; 
    top: 10px; 
    left: 0; 
    right: 0;
    display: none;
  }
  
  


@media (max-width: 375px) {
    form {
        padding: 16px;
    }

    h1 {
        font-size: 24px;
    }
}