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var(--mantine-color-default-border);padding:20px}.action-button{cursor:pointer;background:var(--mantine-color-default-hover);color:var(--mantine-color-text);border:none;border-radius:4px;padding:10px 20px;font-size:14px;transition:background .2s}.action-button:hover{background:var(--mantine-color-gray-4)}.action-button.primary{background:var(--mantine-color-green-6);color:#fff}.action-button.primary:hover{background:var(--mantine-color-green-7)}.action-button.danger{background:var(--mantine-color-red-6);color:#fff}.action-button.danger:hover{background:var(--mantine-color-red-7)}.action-button.share{background:var(--mantine-color-blue-6);color:#fff}.action-button.share:hover{background:var(--mantine-color-blue-7)}.loading{text-align:center;color:var(--mantine-color-dimmed);padding:40px}.diagram-list{flex:1;padding:20px;overflow-y:auto}.empty-state{text-align:center;color:var(--mantine-color-dimmed);padding:40px}.empty-state 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p{color:var(--mantine-color-text);margin:0;font-size:24px;font-weight:600}.error-content{background-color:var(--mantine-color-yellow-light);border:1px solid var(--mantine-color-yellow-light-hover);border-radius:4px;margin-bottom:30px;padding:15px}.error-content p{color:var(--mantine-color-yellow-light-color);word-break:break-word;margin:0;font-size:14px;line-height:1.4}.error-info{background-color:var(--mantine-color-blue-light);border:1px solid var(--mantine-color-blue-light-hover);color:var(--mantine-color-blue-light-color);border-radius:4px;margin-bottom:20px;padding:15px;font-size:14px}.error-footer{justify-content:center;gap:10px;display:flex}.error-button{cursor:pointer;color:#fff;background-color:#007bff;border:none;border-radius:4px;padding:8px 16px;font-size:14px;text-decoration:none;transition:background-color 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