*{
    margin: 0;
    padding: 0;
}

body{
    font-family: 'poppins', sans-serif;
    background: linear-gradient(135deg, #e0f7fa, #fff3e0);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container{
    background-color: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
    width: 90%;
    max-width: 400px;
    text-align: center;
}

input[type="number"]{
    width: 80%;
    padding: 10px;
    margin: 15px 0;
    border: 1px solid #ccc;
    border-radius: 10px;
    font-size: 16px;
}

button{
    padding: 10px 20px;
    background: #6f3ca3;
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: background 0.3s;
    font-size: 16px;
}

button:hover {
    background-color: #0277bd;
}

#result {
    margin-top: 20px;
    font-weight: bold;
    font-size: 18px;
}

@media (max-width: 600px) {
    input[type="number"], button {
        width: 100%;
    }
}