body {
            background-color: #f9f9f9;
            font-family: Arial, sans-serif;
        }
        .container {
            max-width: 100%;
            margin: 0 auto;
            padding: 20px;
            background-color: #fff;
            border-radius: 10px;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        }
        h1 {
            text-align: center;
            color: #333;
        }
        .message {
            margin-bottom: 10px;
        }
        .user-message {
            background-color: #f1f1f1;
            padding: 10px;
            border-radius: 5px;
        }
        .bot-message {
            background-color: #e1e1e1;
            padding: 10px;
            border-radius: 5px;
            position: relative;
        }
        .bot-message.loading::after {
            content: "Loading";
            animation: loading 1s infinite;
        }
        @keyframes loading {
            0% {
                content: "Loading";
            }
            33% {
                content: "Loading.";
            }
            66% {
                content: "Loading..";
            }
            100% {
                content: "Loading...";
            }
        }
        #chat-container {
            margin-bottom: 60px;
        }
        #chat-form {
            bottom: 0;
            left: 0;
            width: 100%;
            background-color: #f1f1f1;
            padding: 10px;
            display: flex;
            align-items: center;
        }
        #user-input {
            flex: 1;
            padding: 10px;
            border: none;
            border-radius: 5px;
        }
        #user-input:focus {
            outline: none;
        }
        #send-button,
        #voice-button,
        #upload-button {
            background-color: #4CAF50;
            color: #fff;
            border: none;
            border-radius: 5px;
            padding: 10px;
            margin-left: 10px;
            cursor: pointer;
            transition: background-color 0.3s ease;
        }
        #send-button:hover,
        #voice-button:hover,
        #upload-button:hover {
            background-color: #45a049;
        }
        #voice-button {
            background-color: #4285f4;
        }
        #voice-button:hover {
            background-color: #1a73e8;
        }
        #upload-button {
            background-color: #808080;
            margin-left: 0;
            margin-right: 10px;
            padding: 10px 12px;
        }
        #upload-button:hover {
            background-color: #696969;
        }
        
        .icon-white {
            color: white !important;
        }
        @keyframes voice-animation {
            0% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.2);
            }
            100% {
                transform: scale(1);
            }
        }
        .thumbnail-container {
            display: flex;
            gap: 10px;
            margin-bottom: 10px;
        }
        .thumbnail {
            position: relative;
            display: inline-block;
        }
        .thumbnail img,
        .thumbnail video {
            width: 50px;
            height: 50px;
            object-fit: cover;
            border-radius: 5px;
        }
        .remove-thumbnail {
            position: absolute;
            top: 0;
            right: 0;
            background: red;
            color: white;
            border: none;
            border-radius: 50%;
            cursor: pointer;
            width: 20px;
            height: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            transform: translate(50%, -50%);
        }