#chat-box {
    border: 1px solid #ccc;
    border-radius: 10px;
    padding: 20px;
    width: 100%;
    max-width: 500px;
    margin: 20px auto;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    font-family: Arial, sans-serif;
}

#messages {
    height: 300px;
    overflow-y: auto;
    margin-bottom: 10px;
    border: 1px solid #eee;
    padding: 10px;
    border-radius: 5px;
}

#messages p {
    margin: 5px 0;
    padding: 5px;
    border-radius: 5px;
}

#messages p.user {
    background-color: #e3f2fd;
    text-align: right;
}

#messages p.bot {
    background-color: #f1f1f1;
    text-align: left;
}

#user-input {
    width: calc(100% - 80px);
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

#send-btn {
    width: 70px;
    padding: 10px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

#send-btn:hover {
    background-color: #0056b3;
}

.initial-message-btn {
    width: 100%;
    padding: 10px;
    background-color: #28a745;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    margin-top: 10px;
}

.initial-message-btn:hover {
    background-color: #218838;
}

.initial-message-btn:disabled {
    background-color: #cccccc;
    cursor: not-allowed;
}

#end-exercise-btn {
    width: 100%;
    padding: 10px;
    background-color: #dc3545;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    margin-top: 10px;
}

#end-exercise-btn:hover {
    background-color: #c82333;
}