body {
    font-family: Arial, sans-serif;
    max-width: 900px;
    margin: 40px auto;
    text-align: center;
}
video {
    border: 1px solid #ccc;
    border-radius: 8px;
    margin-bottom: 20px;
}
#interactions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}
button {
    padding: 8px 16px;
    margin: 0 6px;
    cursor: pointer;
}
input[type="text"] {
    padding: 8px;
    width: 300px;
}
#feedback {
    margin-top: 12px;
    color: #2c3e50;
    font-weight: bold;
}