body {
            font-family: 'Inter', sans-serif;
            background-color: #1a0a0a;
            color: #f8e8e8;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            margin: 0;
            padding: 20px;
            box-sizing: border-box;
        }
        .chat-container {
            background-color: #360a0a;
            border-radius: 1rem;
            box-shadow: 0 10px 15px rgba(0, 0, 0, 0.3);
            width: 100%;
            max-width: 800px;
            height: 90vh;
            display: flex;
            flex-direction: column;
            overflow: hidden;
        }
        .chat-header {
            background-color: #8B0000;
            padding: 1rem 1.5rem;
            border-bottom: 1px solid #5c0a0a;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top-left-radius: 1rem;
            border-top-right-radius: 1rem;
        }
        .chat-messages {
            flex-grow: 1;
            padding: 1.5rem;
            overflow-y: auto;
            background-color: #2b2b2b;
            display: flex;
            flex-direction: column;
            gap: 1rem;
            scroll-behavior: smooth;
        }

        .chat-messages::-webkit-scrollbar {
            width: 8px;
        }

        .chat-messages::-webkit-scrollbar-track {
            background: transparent;
            border-radius: 10px;
        }

        .chat-messages::-webkit-scrollbar-thumb {
            background: transparent;
            border-radius: 10px;
            height: 80px;
            min-height: 50px;
        }

        .chat-messages:hover::-webkit-scrollbar-thumb,
        .chat-messages:focus::-webkit-scrollbar-thumb {
            background: #8B0000;
        }

        .chat-messages::-webkit-scrollbar-thumb:hover {
            background: #DC143C;
        }


        .message-wrapper {
            max-width: 100%;
            display: flex;
            flex-direction: column;
            word-wrap: break-word;
        }
        .message-wrapper.user {
            align-self: flex-end;
        }
        .message-wrapper.model {
            align-self: flex-start;
        }
        .message-content {
            padding: 0.75rem 1rem;
            border-radius: 0.75rem;
        }
        .message-wrapper.user .message-content {
            background-color: #555555;
            color: #DDDDDD;
            border-bottom-right-radius: 0.25rem;
        }
        .message-wrapper.model .message-content {
            background-color: #991b1b;
            color: #DDDDDD;
            border-bottom-left-radius: 0.25rem;
        }
        .message-content img, .message-content video {
            max-width: 100%;
            border-radius: 0.5rem;
            margin-top: 0.5rem;
            display: block;
        }
        .message-content pre {
            white-space: pre-wrap;
            word-wrap: break-word;
            background-color: rgba(0, 0, 0, 0.2);
            padding: 0.5rem;
            border-radius: 0.5rem;
            margin-top: 0.5rem;
            overflow-x: auto;
        }
        .message-content p {
            margin-top: 0.5em;
            margin-bottom: 0.5em;
        }
        .message-content p:first-child {
            margin-top: 0;
        }
        .message-content p:last-child {
            margin-bottom: 0;
        }
        .message-content h1, .message-content h2, .message-content h3, .message-content h4, .message-content h5, .message-content h6 {
            font-weight: bold;
            margin-top: 1em;
            margin-bottom: 0.5em;
            line-height: 1.2;
        }
        .message-content h1 { font-size: 1.8em; }
        .message-content h2 { font-size: 1.5em; }
        .message-content h3 { font-size: 1.3em; }
        .message-content h4 { font-size: 1.1em; }
        .message-content ul {
            list-style-type: disc;
            padding-left: 2em;
            margin-bottom: 0.5em;
            margin-top: 0.5em;
        }
        .message-content ol {
            list-style-type: decimal;
            padding-left: 2em;
            margin-bottom: 0.5em;
            margin-top: 0.5em;
        }
        .message-content li {
            margin-bottom: 0.25em;
        }
        .message-content code {
            background-color: rgba(0, 0, 0, 0.3);
            padding: 0.1em 0.3em;
            border-radius: 0.3em;
            font-family: 'Fira Code', 'Cascadia Code', monospace;
            font-size: 0.9em;
        }
        .message-content pre code {
            display: block;
            padding: 0.8em;
            overflow-x: auto;
            border-radius: 0.5em;
            background-color: rgba(0, 0, 0, 0.4);
        }
        .message-content strong { font-weight: bold; }
        .message-content em { font-style: italic; }
        .message-content a { color: #ADD8E6; text-decoration: underline; }
        .message-content blockquote {
            border-left: 4px solid #c08484;
            padding-left: 1em;
            margin-left: 0;
            opacity: 0.8;
        }
        .message-content hr {
            border: none;
            border-top: 1px solid rgba(255, 255, 255, 0.2);
            margin: 1em 0;
        }


        .message-actions {
            margin-top: 0.25rem;
            display: flex;
            font-size: 0.75rem;
        }
        .message-wrapper.user .message-actions {
            justify-content: flex-end;
        }
        .message-wrapper.model .message-actions {
            justify-content: flex-start;
        }
        .message-actions button {
            background: none;
            border: none;
            color: #a0a0a0;
            cursor: pointer;
            padding: 0.2rem 0.4rem;
            border-radius: 0.25rem;
            transition: background-color 0.2s;
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .message-actions button:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }
        .message-content textarea {
            background-color: #3a3a3a;
            border: none;
            border-radius: 0.75rem;
            padding: 0.75rem 1rem;
            color: #f8e8e8;
            resize: none;
            outline: none;
            overflow-y: hidden;
            width: 100%;
        }
        .chat-input-area {
            background-color: #8B0000;
            padding: 1rem 1.5rem;
            border-top: 1px solid #5c0a0a;
            display: flex;
            flex-direction: column;
            align-items: stretch;
            gap: 0.75rem;
            border-bottom-left-radius: 1rem;
            border-bottom-right-radius: 1rem;
        }
        .chat-input-area .input-row {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .chat-input-area textarea {
            flex-grow: 1;
            background-color: #3a3a3a;
            border: none;
            border-radius: 0.75rem;
            padding: 0.75rem 1rem;
            color: #f8e8e8;
            resize: none;
            outline: none;
            min-height: 40px;
            max-height: 120px;
            overflow-y: auto;
        }

        .chat-input-area textarea::-webkit-scrollbar {
            width: 8px;
        }

        .chat-input-area textarea::-webkit-scrollbar-track {
            background: transparent;
            border-radius: 10px;
        }

        .chat-input-area textarea::-webkit-scrollbar-thumb {
            background: transparent;
            border-radius: 10px;
            height: 60px;
            min-height: 40px;
        }

        .chat-input-area textarea:hover::-webkit-scrollbar-thumb,
        .chat-input-area textarea:focus::-webkit-scrollbar-thumb {
            background: #e5e7eb;
        }

        .chat-input-area textarea::-webkit-scrollbar-thumb:hover {
            background: #b0b0b0;
        }


        .chat-input-area button {
            background-color: #BF2222;
            color: white;
            padding: 0.75rem 1rem;
            border-radius: 0.75rem;
            border: none;
            cursor: pointer;
            transition: background-color 0.2s, transform 0.1s;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .chat-input-area button:hover {
            background-color: #b91c1c;
            transform: translateY(-1px);
        }
        .chat-input-area button:active {
            transform: translateY(0);
        }
        .chat-input-area button:disabled {
            background-color: #6b7280;
            cursor: not-allowed;
        }
        .loading-indicator {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: #e5e7eb;
            font-size: 0.9rem;
        }
        .loading-dot {
            width: 8px;
            height: 8px;
            background-color: #e5e7eb;
            border-radius: 50%;
            animation: bounce 1.4s infinite ease-in-out both;
        }
        .loading-dot:nth-child(1) { animation-delay: -0.32s; }
        .loading-dot:nth-child(2) { animation-delay: -0.16s; }
        .loading-dot:nth-child(3) { animation-delay: 0s; }
        @keyframes bounce {
            0%, 80%, 100% { transform: scale(0); }
            40% { transform: scale(1); }
        }

        .modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            background-color: rgba(0, 0, 0, 0.7);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease-in-out, visibility 0.3s ease-in-out;
        }
        .modal-overlay.show {
            opacity: 1;
            visibility: visible;
        }
        .modal-content {
            background-color: #360a0a;
            padding: 2rem;
            border-radius: 1rem;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
            text-align: center;
            max-width: 400px;
            width: 90%;
        }
        .modal-content h3 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
            color: #f8e8e8;
        }
        .modal-content p {
            margin-bottom: 1.5rem;
            color: #c08484;
        }
        .modal-buttons {
            display: flex;
            justify-content: center;
            gap: 1rem;
        }
        .modal-buttons button {
            background-color: #dc2626;
            color: white;
            padding: 0.75rem 1.5rem;
            border-radius: 0.75rem;
            border: none;
            cursor: pointer;
            transition: background-color 0.2s;
        }
        .modal-buttons button:hover {
            background-color: #b91c1c;
        }
        .modal-buttons button.cancel-btn {
            background-color: #b91c1c;
        }
        .modal-buttons button.cancel-btn:hover {
            background-color: #991b1b;
        }
        #fileInput {
            display: none !important;
        }
        .file-preview-item {
            position: relative;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            background-color: rgba(0, 0, 0, 0.2);
            padding: 0.5rem;
            border-radius: 0.5rem;
        }
        .file-preview-item img,
        .file-preview-item video {
            max-width: 80px;
            max-height: 80px;
            border-radius: 0.25rem;
            object-fit: cover;
        }
        .file-preview-item .remove-file-btn {
            background-color: #dc2626;
            color: white;
            border-radius: 50%;
            width: 20px;
            height: 20px;
            font-size: 0.75rem;
            display: flex;
            justify-content: center;
            align-items: center;
            cursor: pointer;
            position: absolute;
            top: -5px;
            right: -5px;
            border: 1px solid #360a0a;
        }
        .file-preview-item .remove-file-btn:hover {
            background-color: #b91c1c;
        }