DEFAULT_CSS = '\n ToolCallMessage {\n height: auto;\n padding: 0 1;\n margin: 0 0 1 0;\n background: transparent;\n border-left: wide #3b3b3b;\n }\n\n ToolCallMessage .tool-header {\n height: auto;\n }\n\n ToolCallMessage .tool-args {\n color: #6b7280;\n margin-left: 3;\n }\n\n ToolCallMessage .tool-status {\n margin-left: 3;\n }\n\n ToolCallMessage .tool-status.pending {\n color: #f59e0b;\n }\n\n ToolCallMessage .tool-status.success {\n color: #10b981;\n }\n\n ToolCallMessage .tool-status.error {\n color: #ef4444;\n }\n\n ToolCallMessage .tool-status.rejected {\n color: #f59e0b;\n }\n\n ToolCallMessage .tool-output {\n margin-left: 0;\n margin-top: 0;\n padding: 0;\n height: auto;\n }\n\n ToolCallMessage .tool-output-preview {\n margin-left: 0;\n margin-top: 0;\n }\n\n ToolCallMessage .tool-output-hint {\n margin-left: 0;\n color: #6b7280;\n }\n\n ToolCallMessage:hover {\n border-left: wide #525252;\n }\n '