body {
    font-family: Arial, sans-serif;
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
    background: #f9f9f9;
}
h1 { color: #333; }
#form {
    display: flex;
    flex-direction: column;
    gap: 10px;
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
input, textarea {
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
}
button {
    padding: 10px;
    background: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}
button:hover { background: #0056b3; }
#status { margin-top: 10px; font-weight: bold; }
#messages {
    list-style: none;
    padding: 0;
    margin-top: 20px;
}
#messages li {
    background: white;
    padding: 15px;
    margin-bottom: 10px;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
.message-author { font-weight: bold; color: #007bff; }
.message-text { margin: 5px 0; }
.message-time { font-size: 0.8em; color: #888; }