body,#root,.chat-shell{background-color:#121212!important;color:#e0e0e0!important}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root{--bg-primary: #121212;--bg-secondary: #1E1E1E;--bg-tertiary: #2C2C2C;--text-primary: #E0E0E0;--text-secondary: #A0A0A0;--accent-color: #4A90E2;--error-color: #ff5252;--success-color: #4caf50}html,body{height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;background-color:var(--bg-primary);color:var(--text-primary);line-height:1.6}#root{display:flex;flex-direction:column;height:100vh;max-width:1200px;margin:0 auto;background-color:var(--bg-primary)}.chat-shell{display:flex;flex-direction:column;height:100vh;width:100%;max-width:1200px;margin:0 auto;background-color:var(--bg-primary)}.chat-shell,.chat-shell.dark-mode,.chat-shell.light-mode{--bg-primary: #121212 !important;--bg-secondary: #1E1E1E !important;--bg-tertiary: #2C2C2C !important;--text-primary: #E0E0E0 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