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

body{
    font-family:Arial, Helvetica, sans-serif;
    background:linear-gradient(135deg,#4facfe,#00f2fe);
    height:100vh;
    display:flex;
    justify-content:center;
    align-items:center;
}

.container{
    background:white;
    width:500px;
    padding:40px;
    border-radius:15px;
    box-shadow:0 10px 30px rgba(0,0,0,0.2);
    text-align:center;
}

h1{
    color:#333;
    margin-bottom:10px;
    font-size:38px;
}

p{
    color:#666;
    margin-bottom:25px;
}

input{
    width:100%;
    padding:14px;
    font-size:18px;
    border:2px solid #ddd;
    border-radius:8px;
    margin-bottom:20px;
    outline:none;
    transition:.3s;
}

input:focus{
    border-color:#4facfe;
}

button{
    width:100%;
    padding:14px;
    background:#4facfe;
    color:white;
    border:none;
    border-radius:8px;
    font-size:18px;
    cursor:pointer;
    transition:.3s;
}

button:hover{
    background:#2d8cff;
}

#result{
    margin-top:25px;
    font-size:22px;
    font-weight:bold;
    color:#222;
    padding:15px;
    background:#f3f7ff;
    border-radius:8px;
}