:root { 
            --bg-dark: #1e1e2e; --bg-panel: #282a36; --sidebar-bg: #21222c;
            --accent: #bd93f9; --accent-hover: #ff79c6; --text-main: #f8f8f2; 
            --text-dim: #6272a4; --border: #44475a; --success: #50fa7b; 
            --error: #ff5555;
            --sidebar-width: 260px; 
            --editor-ratio: 70%; 
            --chat-ratio: 30%;
        }

        body.light-mode {
            --bg-dark: #f5f5f5; --bg-panel: #ffffff; --sidebar-bg: #e0e0e0;
            --accent: #007acc; --accent-hover: #005f99; --text-main: #1e1e2e;
            --text-dim: #666666; --border: #dddddd; --success: #28a745;
            --error: #dc3545;
        }

        * { box-sizing: border-box; outline: none; }
        body {
            margin: 0; padding: 0; background-color: var(--bg-dark); color: var(--text-main);
            font-family: 'Poppins', sans-serif; height: 100vh; overflow: hidden; display: flex;
        }

        #sidebar { width: var(--sidebar-width); background-color: var(--sidebar-bg); border-right: 1px solid var(--border); display: flex; flex-direction: column; flex-shrink: 0; }
        .logo-area { padding: 20px; font-size: 1.4rem; font-weight: 700; color: var(--accent); display: flex; align-items: center; gap: 10px; border-bottom: 1px solid var(--border); }
        .menu-label { padding: 20px 20px 10px; font-size: 0.8rem; text-transform: uppercase; color: var(--text-dim); letter-spacing: 1px; font-weight: 600; }
        .menu-list { list-style: none; padding: 0 10px; margin: 0; }
        .menu-list button { 
            width: 100%; background: transparent; border: none; color: var(--text-main); 
            padding: 12px 15px; text-align: left; border-radius: 8px; cursor: pointer; 
            transition: all 0.2s; display: flex; align-items: center; gap: 12px; font-size: 0.9rem; 
        }
        .menu-list button:hover { background-color: var(--border); color: var(--accent); }

        #main { flex: 1; display: flex; flex-direction: column; overflow: hidden; }
        header { 
            height: 60px; background-color: var(--bg-panel); border-bottom: 1px solid var(--border); 
            display: flex; align-items: center; justify-content: space-between; padding: 0 20px; flex-shrink: 0; 
        }
        .toolbar { display: flex; gap: 10px; align-items: center; }

        .btn { 
            padding: 8px 15px; border-radius: 6px; font-weight: 600; cursor: pointer; 
            display: flex; align-items: center; gap: 8px; font-size: 0.85rem; transition: all 0.2s; 
            background: var(--bg-dark); 
            color: var(--text-main); 
            border: 1px solid var(--border); 
        }
        .btn:hover { background-color: var(--border); }
        .btn-run { 
            background-color: var(--success); 
            color: var(--bg-dark); 
            border: none;
            box-shadow: 0 2px 4px rgba(80, 250, 123, 0.4);
        }
        .btn-run:hover { opacity: 0.9; background-color: var(--success); transform: translateY(-1px); box-shadow: 0 4px 8px rgba(80, 250, 123, 0.6); }

        .workspace { flex: 1; display: flex; overflow: hidden; position: relative; }
        
        .editor-terminal-block {
            width: var(--editor-ratio); display: flex; flex-direction: column; 
            border-right: 1px solid var(--border); min-width: 400px; flex-shrink: 0; 
        }

        .pane-editor { flex: 2; display: flex; flex-direction: column; position: relative; }
        #editor { flex: 1; font-size: 15px; font-family: 'JetBrains Mono', monospace; }
        .editor-header { padding: 8px 15px; background-color: var(--bg-panel); color: var(--text-dim); border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; font-size: 0.85rem; flex-shrink: 0; }

        .font-size-controls { position: absolute; bottom: 10px; right: 10px; z-index: 10; display: flex; gap: 5px; }
        .font-size-controls button {
            width: 30px; height: 30px; background-color: var(--bg-panel); color: var(--text-main); 
            border: 1px solid var(--border); border-radius: 4px; cursor: pointer; transition: background-color 0.2s;
            font-size: 1.1rem; line-height: 1;
        }
        .font-size-controls button:hover { background-color: var(--border); }

        .terminal-wrapper { flex: 1; background-color: #0f0f14; border-top: 1px solid var(--border); display: flex; flex-direction: column; overflow: hidden; min-height: 150px;}
        .terminal-header { background-color: #21222c; padding: 5px 10px; font-size: 0.75rem; color: var(--text-dim); border-bottom: 1px solid #333; display: flex; gap: 5px; align-items: center; flex-shrink: 0;}
        #output { padding: 10px; font-family: 'JetBrains Mono'; font-size: 12px; color: #f8f8f2; overflow-y: auto; flex: 1; white-space: pre-wrap; }

        #chat-panel {
            width: var(--chat-ratio); background-color: var(--bg-panel); border-left: 1px solid var(--border);
            display: flex; flex-direction: column; overflow: hidden; flex-shrink: 0; min-width: 300px;
        }
        .chat-header { padding: 15px; background-color: var(--sidebar-bg); border-bottom: 1px solid var(--border); font-weight: 600; color: var(--accent); display: flex; justify-content: space-between; align-items: center; flex-shrink: 0; }
        .chat-messages { flex: 1; padding: 15px; overflow-y: auto; display: flex; flex-direction: column; gap: 15px; font-size: 0.9rem; }
        .message { padding: 12px 15px; border-radius: 12px; max-width: 90%; line-height: 1.5; font-size: 0.85rem; position: relative; word-wrap: break-word; }
        .message.bot { background-color: var(--bg-dark); color: var(--text-main); align-self: flex-start; border: 1px solid var(--border); border-top-left-radius: 0; }
        .message.user { background-color: var(--accent); color: white; align-self: flex-end; border-bottom-right-radius: 0; }
        .chat-input-area { padding: 15px; background-color: var(--sidebar-bg); border-top: 1px solid var(--border); display: flex; gap: 10px; flex-shrink: 0; }
        #chatInput { flex: 1; padding: 10px; border-radius: 6px; border: 1px solid var(--border); background-color: var(--bg-dark); color: var(--text-main); font-family: 'Poppins'; }
        
        .chat-input-area button {
            background: var(--accent);
            color: white;
            border: none;
            padding: 10px 15px;
            border-radius: 6px;
            cursor: pointer;
            transition: background-color 0.2s, transform 0.2s;
            font-size: 1rem;
            display: flex;
            align-items: center;
        }
        .chat-input-area button:hover {
            background-color: var(--accent-hover);
            transform: scale(1.05);
        }

        .code-block { 
            background-color: #1a1a1a; 
            border-radius: 8px; 
            overflow: hidden; 
            margin: 10px 0; 
            border: 1px solid var(--border); 
            box-shadow: 0 4px 10px rgba(0,0,0,0.2);
        }
        .code-header { 
            background-color: #121212; 
            padding: 8px 12px; 
            display: flex; 
            justify-content: space-between; 
            align-items: center; 
            border-bottom: 1px solid #3d3d3d; 
            font-size: 0.8rem; 
        }
        .code-language span { color: var(--text-dim); }

        .code-btn { 
            background-color: var(--border); 
            border: none; 
            color: var(--text-main); 
            padding: 6px 10px; 
            border-radius: 4px; 
            font-size: 0.75rem; 
            cursor: pointer; 
            transition: all 0.2s; 
            display: flex; 
            align-items: center; 
            gap: 4px; 
            font-weight: 600;
        }
        .code-btn:hover { 
            background-color: var(--accent); 
            color: white; 
            transform: translateY(-1px);
        }
        .message-content > button.code-btn {
            background-color: var(--accent);
            color: white;
            margin-top: 10px;
            width: 100%;
            justify-content: center;
            border: 1px solid var(--accent);
        }
        .message-content > button.code-btn:hover {
            background-color: var(--accent-hover);
            border-color: var(--accent-hover);
        }

        .code-content { 
            padding: 15px; 
            overflow-x: auto; 
            font-family: 'JetBrains Mono', monospace; 
            font-size: 0.85rem; 
            line-height: 1.4; 
            color: #e5e5e5; 
        }
        .code-content pre { margin: 0; white-space: pre-wrap; word-wrap: break-word; tab-size: 4; }
        
        .code-content pre span.keyword { color: #ff79c6; } 
        .code-content pre span.function { color: #50fa7b; } 
        .code-content pre span.string { color: #f1fa8c; } 
        .code-content pre span.comment { color: #6272a4; } 

        .inline-code { 
            background: rgba(189, 147, 249, 0.15); 
            padding: 2px 6px; 
            border-radius: 4px; 
            font-family: 'JetBrains Mono', monospace; 
            font-size: 0.85em; 
            color: var(--accent); 
        }

        #canvasModal {
            display: none; 
            position: fixed; z-index: 1000; left: 0; top: 0;
            width: 100%; height: 100%; overflow: auto;
            background-color: rgba(0,0,0,0.85); 
            justify-content: center; align-items: center;
            animation: fadeIn 0.3s;
        }
        .modal-content {
            background-color: var(--bg-panel); padding: 15px; border-radius: 12px;
            box-shadow: 0 5px 25px rgba(0,0,0,0.8); max-width: 90%; max-height: 90%;
            display: flex; flex-direction: column;
        }
        .modal-header {
            display: flex; justify-content: space-between; align-items: center;
            padding-bottom: 10px; border-bottom: 1px solid var(--border); margin-bottom: 10px;
        }
        .close-btn { background: none; border: none; color: var(--text-dim); font-size: 1.5rem; cursor: pointer; transition: color 0.2s; }
        .close-btn:hover { color: var(--error); }
        #mycanvas-container { width: 800px; height: 600px; background-color: white; border-radius: 6px; overflow: hidden; }
        @keyframes fadeIn { from { opacity: 0; transform: scale(0.95); } to { opacity: 1; transform: scale(1); } }

        .dot { width: 10px; height: 10px; border-radius: 50%; }
        .dot.red { background:#ff5555; }
        .dot.yellow { background:#f1fa8c; }
        .dot.green { background:#50fa7b; }

        .typing-indicator {
            display: none;
            padding: 10px 15px;
            background-color: var(--bg-dark);
            border-radius: 12px;
            margin: 0 15px 10px 15px;
            align-self: flex-start;
            border: 1px solid var(--border);
            border-top-left-radius: 0;
            max-width: 60px;
        }
        .typing-dots {
            display: flex;
            gap: 4px;
            align-items: center;
            justify-content: center;
        }
        .typing-dots span {
            width: 8px;
            height: 8px;
            background: var(--text-dim);
            border-radius: 50%;
            display: inline-block;
            animation: typing-bounce 1.4s infinite both;
        }
        .typing-dots span:nth-child(2) { animation-delay: 0.2s; }
        .typing-dots span:nth-child(3) { animation-delay: 0.4s; }
        @keyframes typing-bounce {
            0%, 60%, 100% { transform: translateY(0); }
            30% { transform: translateY(-6px); }
        }

        .message-header {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 6px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        .message-avatar {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
        }
        .bot-avatar {
            background: var(--accent);
            color: white;
        }
        .user-avatar {
            background: var(--success);
            color: var(--bg-dark);
        }