cua2-front/src/components/steps/ConnectionStepCard.tsx

import React from 'react';
import { Card, CardContent, Box, Typography, CircularProgress } from '@mui/material';
import CableIcon from '@mui/icons-material/Cable';
import { keyframes } from '@mui/system';

// Border pulse animation
const borderPulse = keyframes`
  0%, 100% {
    border-color: rgba(79, 134, 198, 0.4);
    box-shadow: 0 2px 8px rgba(79, 134, 198, 0.15);
  }
  50% {
    border-color: rgba(79, 134, 198, 0.8);
    box-shadow: 0 2px 12px rgba(79, 134, 198, 0.3);
  }
`;

// Background pulse animation
const backgroundPulse = keyframes`
  0%, 100% {
    background-color: rgba(79, 134, 198, 0.03);
  }
  50% {
    background-color: rgba(79, 134, 198, 0.08);
  }
`;

interface ConnectionStepCardProps {
  isConnecting: boolean;
}

export const ConnectionStepCard: React.FC<ConnectionStepCardProps> = ({ isConnecting }) => {
  return (
    <Card
      elevation={0}
      sx={{
        backgroundColor: 'background.paper',
        border: '2px solid',
        borderColor: isConnecting ? 'primary.main' : 'success.main',
        borderRadius: 1.5,
        animation: isConnecting ? `${borderPulse} 2s ease-in-out infinite` : 'none',
        position: 'relative',
        overflow: 'hidden',
        '&::before': isConnecting ? {
          content: '""',
          position: 'absolute',
          top: 0,
          left: 0,
          right: 0,
          bottom: 0,
          animation: `${backgroundPulse} 2s ease-in-out infinite`,
          zIndex: 0,
        } : {},
      }}
    >
      <CardContent sx={{ p: 1.5, '&:last-child': { pb: 1.5 }, position: 'relative', zIndex: 1 }}>
        {/* Header with spinner or check */}
        <Box sx={{ display: 'flex', alignItems: 'center', gap: 1.5 }}>
          <Box
            sx={{
              display: 'flex',
              alignItems: 'center',
              justifyContent: 'center',
              position: 'relative',
            }}
          >
            {isConnecting ? (
              <CircularProgress
                size={32}
                thickness={2.5}
                sx={{
                  color: 'primary.main',
                }}
              />
            ) : (
              <CableIcon
                sx={{
                  fontSize: 28,
                  color: 'success.main',
                }}
              />
            )}
          </Box>

          <Box sx={{ flex: 1, minWidth: 0 }}>
            <Typography
              sx={{
                fontSize: '0.85rem',
                fontWeight: 700,
                color: isConnecting ? 'primary.main' : 'success.main',
                lineHeight: 1.3,
              }}
            >
              {isConnecting ? 'Connecting to E2B...' : 'Connected to E2B'}
            </Typography>
            <Typography
              sx={{
                fontSize: '0.7rem',
                color: 'text.secondary',
                lineHeight: 1.2,
              }}
            >
              {isConnecting ? 'Setting up sandbox environment' : 'Sandbox ready'}
            </Typography>
          </Box>
        </Box>
      </CardContent>
    </Card>
  );
};