*{margin:0;padding:0;box-sizing:border-box}:root{--bg-primary: #0f0f1a;--bg-secondary: #1a1a2e;--bg-card: #25253e;--text-primary: #e0e0e0;--text-secondary: #a0a0b0;--accent: #7c3aed;--accent-hover: #6d28d9;--user-bubble: #2563eb;--assistant-bubble: #374151;--danger: #ef4444;--success: #22c55e;--warning: #f59e0b;--border: #333355;--radius: 12px}html,body,#root{height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg-primary);color:var(--text-primary)}.app-layout{display:flex;height:100vh;overflow:hidden}.avatar-section{flex:0 0 500px;display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--bg-secondary);border-right:1px solid 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