/* Allgemeine Stile */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f8f9fa;
    color: #212529;
}

/* Header */
header {
    background-color: #007bff;
    color: #fff;
    text-align: center;
    padding: 1rem 0;
}

header h1 {
    margin: 0;
    font-size: 1.5rem;
}

/* Hauptinhalt */
main {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 4rem);
    padding: 1rem;
}

form {
    width: 100%;
    max-width: 400px;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

form input {
    width: 100%;
    padding: 0.75rem;
    margin-bottom: 1rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

form button {
    width: 100%;
    padding: 0.75rem;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
}

form button:hover {
    background-color: #0056b3;
}

#message, #login-message {
    color: red;
    font-size: 0.9rem;
    text-align: center;
}

/* QR-Scanner */
#scanner {
    width: 100%;
    max-width: 400px;
    height: auto;
    border: 2px solid #007bff;
    border-radius: 5px;
    margin-bottom: 1rem;
}

#qr-form input[readonly] {
    background-color: #f1f1f1;
    color: #666;
    cursor: not-allowed;
}

/* Responsives Design */
@media (max-width: 600px) {
    header h1 {
        font-size: 1.2rem;
    }

    form {
        padding: 1rem;
    }
}