body {
    font-family: 'Segoe UI', sans-serif;
    background: linear-gradient(to right, #a1c4fd, #c2e9fb);
    text-align: center;
    padding: 30px;
}

.container {
    background-color: #fff;
    padding: 30px;
    border-radius: 15px;
    display: inline-block;
    box-shadow: 0px 0px 20px rgba(0,0,0,0.2);
    max-width: 500px;
}

.input-card {
    margin: 15px 0;
    text-align: left;
}

input, button {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
    border-radius: 8px;
    border: 1px solid #ccc;
    box-sizing: border-box;
}

button {
    background-color: #0077b6;
    color: white;
    font-weight: bold;
    cursor: pointer;
}

button:hover {
    background-color: #023e8a;
}

small {
    color: #555;
}
#result {
    margin-top: 20px;
    padding: 15px;
    font-weight: bold;
    border-radius: 8px;
}