body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: url("https://plus.unsplash.com/premium_photo-1701892428860-ca4913e92274?q=80&w=1631&auto=format&fit=crop&ixlib=rb-4.1.0&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D");
}

.container {
    max-width: 500px;
    margin: 80px auto;
    padding: 30px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 3px solid rgba(255, 255, 255, 0.3);

}

h1 {
    text-align: center;
}

section {
    margin: 15px 0;
}


label {
    display: block;
    margin-bottom: 5px;
}

input,
select,
textarea {
    width: 100%;
    padding: 10px;
    border-radius: 5px;
    border: 1px solid green;
    box-sizing: border-box;
}

input:focus,
textarea:focus {
    border-color: blue;
    outline: none;
}

input:valid,
select:valid,
textarea:valid {
    border-color: green;
}

input:invalid,
select:invalid,
textarea:invalid {
    border-color: red;
}

.radio-group {
    width: 100%;
    display: flex;
    gap: 20px;
}

.radio-group label {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
}

input[type="radio"] {
    accent-color: green;
}

button {
    width: 100%;
    padding: 12px;
    background: green;
    color: white;
    border: none;
    border-radius: 5px;
    margin-top: 15px;
}

button:hover {
    background: black;
}