const techStack = {
  core: {
    languages: [
      {
        name: "Python",
        level: "advanced",
        expertise: ["ML/AI", "Backend", "Data Processing"],
      },
      {
        name: "JavaScript",
        level: "advanced",
        expertise: ["Frontend", "Backend"],
      },
      {
        name: "Dart",
        level: "intermediate",
        expertise: ["Mobile Development"],
      },
      { name: "Java", level: "intermediate", expertise: ["Backend"] },
      {
        name: "C++",
        level: "intermediate",
        expertise: ["Systems Programming"],
      },
    ],
  },
  development: {
    frontend: {
      web: {
        core: ["HTML", "CSS", "JavaScript"],
        frameworks: {
          ui: ["React"],
          styling: ["Tailwind CSS", "Bootstrap", "SCSS"],
        },
        optimization: ["Intersection Observer", "Gzip"],
      },
      mobile: {
        frameworks: ["Flutter"],
        stateManagement: ["GetX"],
      },
    },
    backend: {
      node: {
        runtime: ["Node.js"],
        frameworks: ["Express"],
      },
      python: {
        frameworks: ["Flask", "Django"],
      },
    },
  },
  architecture: {
    patterns: {
      microservices: {
        patterns: ["API Gateway", "Service Discovery", "Load Balancing"],
        communication: ["REST", "Message Queues"],
        deployment: ["Containerization", "Orchestration"],
      },
      design: ["MVC", "REST API", "Microservices"],
    },
    security: {
      authentication: ["JWT"],
      authorization: ["Role-based Access"],
      dataProtection: ["Encryption", "Secure Communication"],
    },
  },
  data: {
    databases: {
      noSQL: ["MongoDB", "Firebase"],
      SQL: ["MySQL", "PostgreSQL"],
    },
    cloud: {
      platforms: ["AWS", "Heroku"],
      services: ["S3", "ECS", "ECR"],
    },
  },
  ai_ml: {
    machineLearning: {
      frameworks: ["TensorFlow", "scikit-learn"],
      libraries: ["NumPy", "Pandas"],
    },
    computerVision: ["OpenCV", "Tesseract"],
    nlp: {
      core: ["NLTK"],
      models: ["Word2Vec", "DistilBERT"],
    },
    visualization: ["Matplotlib", "FL Chart"],
  },
  specialized: {
    dataVisualization: ["FL Chart"],
    payments: ["Stripe"],
    architectures: ["CNN", "LSTM", "BiLSTM"],
  },
  devOps: {
    containerization: ["Docker"],
    versionControl: ["Git"],
    cicd: {
      tools: ["GitHub Actions"],
      practices: ["Automated Testing", "Continuous Deployment"],
    },
    monitoring: ["Application Logs", "Performance Metrics"],
  },
};