*{margin:0;padding:0;box-sizing:border-box}:root{--primary: #667eea;--primary-dark: #5568d3;--secondary: #764ba2;--accent: #f093fb;--bg-main: #0a0a0a;--bg-message: #141414;--bg-user: #1a1a1a;--bg-assistant: #0f0f0f;--bg-hover: #1f1f1f;--text-primary: #f5f5f5;--text-secondary: #b0b0b0;--text-tertiary: #707070;--border: #2a2a2a;--border-light: #1f1f1f;--shadow: rgba(0, 0, 0, .5);--shadow-md: rgba(0, 0, 0, .7);--gradient: linear-gradient(135deg, #667eea, #764ba2);--gradient-hover: linear-gradient(135deg, #7c8ef5, #8a5bb5);--glow: 0 0 20px rgba(102, 126, 234, .3)}@media(prefers-color-scheme:light){:root{--bg-main: #ffffff;--bg-message: #f9f9f9;--bg-user: #f5f5f5;--bg-assistant: #ffffff;--bg-hover: #f0f0f0;--text-primary: #1a1a1a;--text-secondary: #606060;--text-tertiary: #909090;--border: #e0e0e0;--border-light: #f0f0f0;--shadow: rgba(0, 0, 0, .08);--shadow-md: rgba(0, 0, 0, .12)}}body{font-family:-apple-system,BlinkMacSystemFont,Inter,Segoe UI,Noto 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