:root{--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--bg-app: #f8fafc;--bg-surface: #ffffff;--bg-sidebar: #f1f5f9;--bg-input: #f1f5f9;--bg-message-other: #f1f5f9;--bg-message-me: #3b82f6;--text-message-me: #ffffff;--bg-hover: #e2e8f0;--border-color: #e2e8f0;--text-primary: #0f172a;--text-secondary: #475569;--text-muted: #94a3b8;--accent-color: #3b82f6;--accent-hover: #2563eb;--system-bg: rgba(226, 232, 240, .6);--system-text: #64748b;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05)}[data-theme=dark]{--bg-app: #0f172a;--bg-surface: #1e293b;--bg-sidebar: #131d2e;--bg-input: #0f172a;--bg-message-other: #334155;--bg-message-me: #2563eb;--text-message-me: #ffffff;--bg-hover: #334155;--border-color: #334155;--text-primary: #f8fafc;--text-secondary: #cbd5e1;--text-muted: #64748b;--accent-color: #3b82f6;--accent-hover: #60a5fa;--system-bg: rgba(30, 41, 59, .7);--system-text: #94a3b8;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .3), 0 2px 4px -1px rgba(0, 0, 0, .2);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .4), 0 4px 6px -2px rgba(0, 0, 0, .3)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-family);background-color:var(--bg-app);color:var(--text-primary);height:100vh;width:100vw;overflow:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{height:100%;display:flex;flex-direction:column}.chat-app{display:flex;flex-direction:column;height:100vh;width:100vw;background-color:var(--bg-app);overflow:hidden}.chat-main-container{display:flex;flex:1;height:calc(100vh - 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