body {
    font-family: Arial, sans-serif;
    background: #f7f7f7;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 420px;
    margin: 40px auto;
    background: #fff;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.05);
}

h1 {
    margin-top: 0;
    text-align: center;
}

.sub {
    text-align: center;
    color: #777;
    margin-bottom: 20px;
}

.controls label {
    display: block;
    margin: 10px 0 5px;
}

.controls input[type="number"] {
    width: 100%;
    padding: 8px;
    margin-bottom: 10px;
}

.controls input[type="checkbox"] {
    margin-right: 8px;
}

button {
    width: 100%;
    padding: 10px;
    background: #000;
    color: #fff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    margin-top: 10px;
}

button:hover {
    opacity: 0.9;
}

.output-box {
    display: flex;
    margin-top: 20px;
}

.output-box input {
    flex: 1;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 6px 0 0 6px;
}

.output-box button {
    width: 80px;
    border-radius: 0 6px 6px 0;
}

.footer {
    text-align: center;
    margin-top: 30px;
    color: #555;
}

.footer a {
    display: block;
    margin-top: 5px;
    color: #000;
    text-decoration: underline;
}

.host {
    margin-top: 20px;
}