body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f6f9;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    color: #4a4a4a;
}

.container {
    width: 100%;
    max-width: 800px;
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.header {
    text-align: center;
    color: #0056b3;
}

.header .logo {
    width: 100px;
    margin-bottom: 10px;
}

.header h1 {
    font-size: 24px;
    margin-bottom: 5px;
}

.chat-window {
    display: flex;
    flex-direction: column;
    gap: 10px;
    height: 550px;
    border: 1px solid #ddd;
    border-radius: 10px;
    overflow: hidden;
    background-color: #fefefe;
}

.chat-history {
    flex: 1;
    overflow-y: auto;
    padding: 15px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.input-area {
    display: flex;
    gap: 10px;
    align-items: center;
    padding: 10px;
    background-color: #f9f9f9;
    border-top: 1px solid #ddd;
}

.input-area input[type="text"] {
    flex: 1;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 14px;
}

.send-button, .action-button {
    padding: 10px;
    background-color: #0056b3;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    font-weight: bold;
}

.send-button:hover, .action-button:hover {
    background-color: #004494;
}

.message {
    padding: 10px;
    border-radius: 5px;
    max-width: 85%;
    font-size: 14px;
    line-height: 1.5;
}

.user {
    background-color: #0056b3;
    color: white;
    align-self: flex-end;
}

.bot {
    background-color: #f1f1f1;
    color: #4a4a4a;
    align-self: flex-start;
}

.loading-gif {
    display: block;
    margin: 10px auto;
    width: 40px;
}

.footer {
    text-align: center;
    font-size: 12px;
    color: #999;
    margin-top: 10px;
}

/* Media queries for mobile devices */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }

    .header .logo {
        width: 80px;
    }

    .header h1 {
        font-size: 18px;
    }

    .chat-window {
        height: 450px;
    }

    .input-area input[type="text"] {
        font-size: 12px;
        padding: 8px;
    }

    .send-button, .action-button {
        font-size: 12px;
        padding: 8px 12px;
    }

    .message {
        font-size: 13px;
    }
}