:root {
            --primary: #4f46e5;
            --secondary: #f9fafb;
            --text: #111827;
            --bg: #ffffff;
            --border: #e5e7eb;
            --error: #ef4444;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            max-width: 800px;
            margin: 0 auto;
            padding: 20px;
        }
        
        h1 {
            color: var(--primary);
            text-align: center;
            margin-bottom: 30px;
        }
        
        .chat-container {
            display: flex;
            flex-direction: column;
            height: 70vh;
            border: 1px solid var(--border);
            border-radius: 8px;
            overflow: hidden;
        }
        
        .chat-messages {
            flex: 1;
            padding: 20px;
            overflow-y: auto;
            background-color: var(--secondary);
        }
        
        .message {
            margin-bottom: 15px;
            padding: 10px 15px;
            border-radius: 8px;
            max-width: 80%;
        }
        
        .user-message {
            background-color: var(--primary);
            color: white;
            margin-left: auto;
            border-bottom-right-radius: 0;
        }
        
        .assistant-message {
            background-color: var(--bg);
            border: 1px solid var(--border);
            margin-right: auto;
            border-bottom-left-radius: 0;
        }
        
        .input-area {
            display: flex;
            padding: 15px;
            background-color: var(--bg);
            border-top: 1px solid var(--border);
        }
        
        #message-input {
            flex: 1;
            padding: 10px;
            border: 1px solid var(--border);
            border-radius: 4px;
            margin-right: 10px;
        }
        
        button {
            padding: 10px 15px;
            background-color: var(--primary);
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            transition: background-color 0.2s;
        }
        
        button:hover {
            background-color: #4338ca;
        }
        
        button:disabled {
            background-color: #9ca3af;
            cursor: not-allowed;
        }
        
        .voice-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            margin-right: 10px;
        }
        
        .recording {
            animation: pulse 1.5s infinite;
        }
        
        @keyframes pulse {
            0% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7); }
            70% { box-shadow: 0 0 0 10px rgba(239, 68, 68, 0); }
            100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
        }
        
        .config-panel {
            margin-bottom: 20px;
            padding: 15px;
            border: 1px solid var(--border);
            border-radius: 8px;
            background-color: var(--secondary);
        }
        
        .config-row {
            display: flex;
            margin-bottom: 10px;
            align-items: center;
        }
        
        label {
            margin-right: 10px;
            min-width: 80px;
        }
        
        select, input {
            padding: 8px;
            border: 1px solid var(--border);
            border-radius: 4px;
            flex: 1;
        }
        
        .status {
            text-align: center;
            padding: 10px;
            font-style: italic;
            color: #6b7280;
        }
        
        .error {
            color: var(--error);
            text-align: center;
            padding: 10px;
        }
        
        .hidden {
            display: none;
        }