:root {
            --background-color: #131314;
            --chat-background-color: #1A1B1C;
            --input-background-color: #1E1F20;
            --text-color: #E3E3E3;
            --user-message-bg: #2E2F30;
            --bot-message-bg: #1A1B1C;
            --accent-color: #8A6FF7;
            --border-color: #4B4B4D;
            --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            background-color: var(--background-color);
            color: var(--text-color);
            font-family: var(--font-family);
            margin: 0;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            padding: 20px;
        }
        .logo{
            cursor: pointer;
        }

        .main-chat-wrapper {
            width: 100%;
            max-width: 800px;
            height: 95vh;
            background-color: var(--chat-background-color);
            border-radius: 10px;
            display: flex;
            flex-direction: column;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
        }

        header {
            padding: 15px 25px;
            font-size: 20px;
            border-bottom: 1px solid var(--border-color);
            text-align: center;
            font-weight: bold;
        }

        .chat-container {
            flex-grow: 1;
            overflow-y: auto;
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .message {
            max-width: 70%;
            padding: 12px 18px;
            border-radius: 18px;
            line-height: 1.5;
            word-wrap: break-word;
        }

        .user-message {
            background-color: var(--user-message-bg);
            align-self: flex-end;
            border-bottom-right-radius: 4px;
        }

        .bot-message {
            background-color: var(--bot-message-bg);
            align-self: flex-start;
            border-bottom-left-radius: 4px;
        }

        .chat-input-area {
            padding: 20px;
            display: flex;
            align-items: center;
            background-color: var(--chat-background-color);
            border-top: 1px solid var(--border-color);
        }

        #question {
            flex-grow: 1;
            background-color: var(--input-background-color);
            color: var(--text-color);
            border: 1px solid var(--border-color);
            border-radius: 25px;
            padding: 12px 20px;
            font-size: 16px;
            outline: none;
            transition: border-color 0.3s;
        }

        #question2 {
            flex-grow: 1;
            background-color: var(--input-background-color);
            color: var(--text-color);
            border: 1px solid var(--border-color);
            border-radius: 25px;
            padding: 12px 20px;
            font-size: 16px;
            outline: none;
            transition: border-color 0.3s;
        }

        #question:focus {
            border-color: var(--accent-color);
        }

        #send-btn,
        #send-btn2 {
            background-color: var(--accent-color);
            color: white;
            border: none;
            border-radius: 50%;
            width: 50px;
            height: 50px;
            font-size: 24px;
            margin-left: 15px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background-color 0.3s;
        }

        #send-btn,
        #send-btn2 :hover {
            background-color: #7B60E2;
        }

        .thinking-indicator {
            max-width: 70%;
            padding: 12px 18px;
            border-radius: 18px;
            line-height: 1.5;
            align-self: flex-start;
            background-color: var(--bot-message-bg);
            border-bottom-left-radius: 4px;
            animation: breathing 2s ease-in-out infinite;
        }

        @keyframes breathing {

            0%,
            100% {
                opacity: 0.7;
            }

            50% {
                opacity: 1;
            }
        }

        /* Upload Section Styles */
        .upload-section {
            padding: 15px 20px;
            border-bottom: 1px solid var(--border-color);
            /* background: var(--chat-background-color); */
        }

        .upload-header h3 {
            margin: 0 0 10px 0;
            font-size: 14px;
            color: var(--text-color);
        }

        .upload-area {
            border: 2px dashed var(--border-color);
            border-radius: 8px;
            padding: 20px;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .upload-area:hover {
            border-color: var(--accent-color);
            background: rgba(138, 111, 247, 0.05);
        }

        .upload-area input[type="file"] {
            display: none;
        }

        .upload-label {
            cursor: pointer;
            display: block;
        }

        .upload-text {
            display: block;
            color: var(--text-color);
            font-size: 14px;
            margin-bottom: 5px;
        }

        .upload-hint {
            display: block;
            color: #888;
            font-size: 12px;
        }

        .upload-progress {
            margin-top: 15px;
            display: none;
        }

        .progress-bar-container {
            height: 4px;
            background: var(--border-color);
            border-radius: 2px;
            overflow: hidden;
        }

        .progress-bar {
            height: 100%;
            background: var(--accent-color);
            width: 0%;
            transition: width 0.3s ease;
        }

        .progress-text {
            margin-top: 8px;
            font-size: 12px;
            color: #888;
        }

        .upload-status {
            margin-top: 10px;
            padding: 10px;
            border-radius: 5px;
            font-size: 14px;
            display: none;
        }

        .upload-status.success {
            background: rgba(46, 204, 113, 0.1);
            color: #2ecc71;
            display: block;
        }

        .upload-status.error {
            background: rgba(231, 76, 60, 0.1);
            color: #e74c3c;
            display: block;
        }

        .upload-status.info {
            background: rgba(52, 152, 219, 0.1);
            color: #3498db;
            display: block;
        }

        /* File List Styles */
        .file-list-section {
            padding: 15px 20px;
            border-bottom: 1px solid var(--border-color);
            /* background: var(--chat-background-color); */
        }

        .file-list-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 10px;
        }

        .file-list-header h3 {
            margin: 0;
            font-size: 14px;
            color: var(--text-color);
        }

        .refresh-btn {
            background: transparent;
            border: 1px solid var(--border-color);
            color: var(--text-color);
            padding: 5px 10px;
            border-radius: 4px;
            cursor: pointer;
            font-size: 12px;
            transition: all 0.3s;
        }

        .refresh-btn:hover {
            border-color: var(--accent-color);
            color: var(--accent-color);
        }

        .file-list {
            max-height: 150px;
            overflow-y: auto;
        }

        .file-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 8px 12px;
            background: var(--input-background-color);
            border-radius: 6px;
            margin-bottom: 6px;
        }

        .file-item:last-child {
            margin-bottom: 0;
        }

        .file-name {
            color: var(--text-color);
            font-size: 13px;
            word-break: break-all;
        }

        .file-info {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .file-size {
            color: #888;
            font-size: 11px;
        }

        .file-type {
            background: var(--accent-color);
            color: white;
            padding: 2px 6px;
            border-radius: 3px;
            font-size: 10px;
            text-transform: uppercase;
        }

        .empty-list {
            color: #888;
            font-size: 13px;
            text-align: center;
            padding: 20px;
        }