body {
    font-family: Arial, sans-serif;
}
.hidden {
    display: none !important;
}
#chat-button {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 15px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-size: 16px;
}
#chat-window {
    position: fixed;
    bottom: 80px;
    right: 20px;
    width: 350px;
    height: 500px;
    border: 1px solid #ccc;
    border-radius: 10px;
    background: white;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
}
#chat-header {
    padding: 15px;
    background: #007bff;
    color: white;
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
#close-chat {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    font-size: 18px;
}
#chat-messages {
    flex: 1;
    padding: 15px;
    overflow-y: auto;
}
.message {
    margin-bottom: 10px;
    padding: 10px;
    border-radius: 5px;
}
.user-message {
    background: #e3f2fd;
    text-align: right;
}
.bot-message {
    background: #f1f1f1;
}
#chat-input-area {
    padding: 15px;
    display: flex;
    border-top: 1px solid #ccc;
}
#user-input {
    flex: 1;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}
#send-button {
    margin-left: 10px;
    padding: 10px 15px;
    background: #007bff;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}