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

:root{
    --light-green:hsl(148, 38%, 91%);
    --green : hsl(169, 82%, 27%);
    --red:hsl(0, 66%, 54%);

    --white:hsl(0, 0%, 100%);
    --medium-grey:hsl(186, 15%, 59%);
    --dark-grey:hsl(187, 24%, 22%);
}

body{
    background-color: var(--light-green);
    min-height: 100vh;
    font-family: "Karla", sans-serif;
    display: grid;
    place-content: center;
}

label{
    color: var(--dark-grey);
}

input[type='text'],
input[type='email'],
textarea {
    width: 100%;
    padding: .5rem;
    margin-top: .5rem;
    font-family: inherit;
    border: 1px solid var(--medium-grey);
    border-radius: .35rem ;
}

input:focus,
textarea:focus{
    outline: 1px solid var(--green);
    border:1px solid var(--green) ;
}

input[type='text'].form-error ,
input[type='email'].form-error{
   border:1px solid var(--red) ;
}

.required-input{
    color: var(--green);
}

.form-alert{
    display:none;
    color: var(--red);
    margin-top: .5rem;
}

.form-alert.form-error{
    display: block;
}

.contact-form {
    background-color: var(--white);
    margin: 1rem;
    padding: 2rem;
    border-radius: 1rem;
}

.contact-form h1 {
    color: var(--dark-grey);
    margin-bottom: 1.25rem;
}

.contact-form .form-item {
        margin-bottom: 1.5rem;
}

.contact-form .form-item:nth-child(1){
    display: flex;
    gap: 1rem;
}

.contact-form .form-item:nth-child(3) .radio-inputs {
    margin-top: .5rem;
    display: flex;
    gap: 1rem;
}

.contact-form .form-item:nth-child(3) .radio-inputs .radio-option {
    cursor: pointer;
    width: 100%;
    padding: .5rem 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    outline: 1px solid var(--medium-grey);
    border-radius: .35rem;
}

.contact-form .form-item:nth-child(3) .radio-inputs .radio-option.active {
    background-color: var(--light-green);
}

.contact-form .form-item:nth-child(3) input[type='radio'] {
    appearance: none;
    width: .5rem;
    height: .5rem;
    outline: 2px solid var(--green);
    outline-offset: 3px;
    border-radius: 50%;
}

.contact-form .form-item:nth-child(3) input[type='radio']:checked {
    background-color: var(--green);
}

.contact-form .form-item:nth-child(3) .radio-inputs .radio-option label {
    cursor: pointer;
    width: 100%;
}

.contact-form .form-item:nth-child(5) {
    margin-bottom: 2rem;
}

.contact-form .form-item:nth-child(5) div {
    display: flex;
    gap: 1rem;
}

.contact-form .form-item:nth-child(5) input[type='checkbox'] {
    cursor: pointer;
    accent-color: var(--green);
}

.contact-form .form-item:nth-child(5) label {
    cursor: pointer;
}

.contact-form .submit-btn {
    cursor: pointer;
    background-color: var(--green);
    color: var(--white);
    width: 100%;
    padding: .75rem;
    border: 0;
    outline: 0;
    border-radius: .35rem;
}

.contact-form .submit-btn:hover { 
 background-color: var(--dark-grey);
}

.success-message {
    background-color: var(--dark-grey);
    color: var(--light-green);
    width: max-content;
    padding: 1rem;
    pointer-events: none;
    opacity: 0;
    position: fixed;
    top: 10%;
    left: 50%;
    transform: translateX(-50%);
    border-radius: .35rem;
}

.success-message.active {
    display: block;
    pointer-events: all;

    animation-name: fadeOut;
    animation-duration: 5s ;
    animation-fill-mode: forwards;
}


 .attribution {
  text-align: center;
  margin-top: 2rem;
   margin-bottom: .5rem;
  color: var(--medium-grey);
}

.attribution a {
  color: var(--green);
  text-decoration: none;
}

@keyframes fadeOut {
    0%,25% , 50% ,75% {
        opacity: 1;
    }
    100% {
        opacity: 0
    }
}

.success-message .message-header {
    color: var(--white);
    margin-bottom: .5rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: .5rem;
}

@media (max-width:380px) {
   .contact-form .form-item:nth-child(1) {
    flex-direction: column;
   }
   .contact-form .form-item:nth-child(3) .radio-inputs{
    flex-direction: column;
   }

   textarea {
    height: 200px;
   }
   
   .success-message {
    width: 35ch;
    top: 5%;
   }
}