body {
    font-family: sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #f0f0f0;
}

#welcome-container, #room-container {
    background-color: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.hidden {
    display: none;
}

input, button, select {
    margin: 0.5rem 0;
    padding: 0.5rem;
    font-size: 1rem;
}

.join-room-container {
    margin-top: 1rem;
    border-top: 1px solid #ccc;
    padding-top: 1rem;
}

#duplicates-alert {
    color: red;
    font-weight: bold;
}