*{margin:0;padding:0;box-sizing:border-box}:root{--bg-primary: #f5f5f5;--bg-secondary: #ffffff;--bg-tertiary: #f0f0f0;--bg-active: #e3f2fd;--bg-hover: #f5f5f5;--text-primary: #333;--text-secondary: #666;--text-tertiary: #999;--border-color: #f0f0f0;--message-bg-own: #dcf8c6;--message-bg-other: #ffffff;--message-text-own: #000000;--message-text-other: #333;--shadow: rgba(0, 0, 0, .1)}body.dark-mode{--bg-primary: #111b21;--bg-secondary: #202c33;--bg-tertiary: #2a3942;--bg-active: #2a3942;--bg-hover: #2a3942;--text-primary: #e9edef;--text-secondary: #8696a0;--text-tertiary: #667781;--border-color: #2a3942;--message-bg-own: #005c4b;--message-bg-other: #202c33;--message-text-own: #ffffff;--message-text-other: #e9edef;--shadow: rgba(0, 0, 0, .3)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica 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