.chat-container {
        max-width: 600px;
        background: white;
        border-radius: 10px;
        overflow: hidden;
        box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    }

    .chat-box {
        height: 400px;
        overflow-y: auto;
        padding: 15px;
        display: flex;
        flex-direction: column;
    }

    .message {
        max-width: 75%;
        padding: 10px;
        border-radius: 15px;
        margin-bottom: 10px;
    }

    .received {
        background-color: #e9ecef;
        align-self: flex-start;
    }

    .sent {
        background-color: #007bff;
        color: white;
        align-self: flex-end;
    }

    .chat-input {
        display: flex;
        gap: 10px;
        padding: 10px;
        background: white;
        border-top: 1px solid #ddd;
    }

    .chat-input input {
        flex: 1;
    }