body {
    font-family: sans-serif;
    background: linear-gradient(to right, darkcyan, darkgoldenrod);
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    background: rgba(255, 255, 255, 0.2);
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.6);
    text-align: center;
    width: 400px;
}

h1 {
    margin-bottom: 30px;
}

.input-group h3 {
    color: whitesmoke;
    text-decoration: underline;
    text-shadow: 0 0 19px rgba(15, 98, 42, 0.6);
}

label {
    font-size: 18px;
}

input[type="number"],
input[type="range"] {
    width: 100%;
}

input[type="number"] {
    background: linear-gradient(to right, skyblue, aqua);
    border-radius: 7px;
    outline: 1px solid white;
    border: none;
    font-size: 22px;
    color: black;
    padding: 3px;
}

input[type="range"] {
    margin-top: 3px;
}

.radio-group label {
    margin-right: 15px;
}

.radio-group {
    display: flex;
    justify-content: center;
    margin-top: 5px;
}

.input-group span {
    font-size: 18px;
    font-weight: 500;
}

button {
    background-color: aqua;
    border: none;
    color: black;
    font-weight: bold;
    padding: 10px 20px;
    border-radius: 10px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: skyblue;
    color: white;
    font-weight: bold;
}

.output {
    margin-top: 20px;
}

#bmi-result {
    font-size: 1.3em;
    font-weight: bold;
}

#bmi-category {
    font-size: 1.1em;
    font-style: italic;
    min-height: 1.2em;
}