.chat-modal {
    display: none;
    position: fixed;
    z-index: 99999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background: rgba(0,0,0,0.4);
}

.chat-modal-content {
    background: #fff;
    margin: 10% auto;
    padding: 20px;
    border-radius: 10px;
    width: 400px;
    max-width: 90%;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

.chat-close {
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

#chatWindow {
    height: 200px;
    overflow-y: auto;
    border: 1px solid #ccc;
    padding: 10px;
    margin-bottom: 10px;
}

.user-msg {
    text-align: right;
    margin: 5px;
    color: #0073aa;
}

.bot-msg {
    text-align: left;
    margin: 5px;
    color: #333;
}

.error-msg {
    text-align: center;
    color: red;
    margin: 5px;
}