:root {
    color-scheme: light dark;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

body {
    margin: 0;
    line-height: 1.5;
}

.container {
    max-width: 32rem;
    margin: 3rem auto;
    padding: 0 1.5rem;
    text-align: center;
}

h1 {
    font-size: 1.5rem;
}

#qr {
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 8px;
    background: #fff;
}

#autostart {
    display: inline-block;
    margin-top: 0.5rem;
}

button {
    margin-top: 1rem;
    padding: 0.5rem 1.25rem;
    border: 1px solid #888;
    border-radius: 6px;
    background: transparent;
    cursor: pointer;
}

.error {
    color: #b00020;
    font-weight: 600;
}