# muhamadbarhan/portfolio architecture

> Architecture diagram of the GitHub repository muhamadbarhan/portfolio, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-08-14). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/muhamadbarhan/portfolio
- Repository: https://github.com/muhamadbarhan/portfolio

## Overview

#### Purpose and Runtime
This is a Create React App single-page portfolio site. It runs in the browser as a React client application, developed with `npm start` and compiled into static production assets with `npm run build`. The main browser bootstrap is `src/index.js`; the page composition root is `src/App.js`.

#### Application Composition
`App` assembles a vertically structured portfolio experience from independently styled section components. There is no indicated backend, API layer, database, authentication flow, or server-side rendering boundary.
- `src/App.js`
- `src/components/Navbar/navbar.js`
- `src/components/Footer/footer.js`

#### Navigation and Section Flow
The navigation component is the primary in-page control surface, likely linking or scrolling users among portfolio sections. Content flows from introductory identity/context through professional background, skills, projects, credentials, and contact information, then terminates in the footer.
- `src/components/Navbar/navbar.js`
- `src/components/Intro/intro.js`
- `src/components/Contact/contact.js`

#### Portfolio Content Stages
Core presentation stages are separated by domain, allowing each section’s markup and styles to evolve independently:
- About/profile: `src/components/About/about.js`, `src/components/About/about.css`
- Experience and skills: `src/components/Experience/experience.js`, `src/components/Skills/skills.js`
- Work showcase and certifications: `src/components/Projects/Projects.js`, `src/components/Certifications/Certifications.js`
- Contact endpoint: `src/components/Contact/contact.js`

#### Styling Boundary
Each major content section owns a colocated CSS stylesheet rather than using a central design-system or theme layer. This creates component-level visual isolation but makes cross-site style consistency dependent on coordinated updates across section directories.
- `src/components/Intro/intro.css`
- `src/components/Projects/Projects.css`
- `src/components/Navbar/navbar.css`

#### Static Assets and Public Delivery
CRA serves static shell and discovery assets from `public/`, while application-imported artifacts live under `src/assets/`. The downloadable resume is packaged as an application asset. Search-engine and installability metadata are delivered as static public files.
- `public/index.html`
- `public/manifest.json`
- `public/robots.txt`
- `public/sitemap.xml`
- `src/assets/Muhamad_Barhan_Fullstack_Developer_Resume.pdf`

#### Offline/Deployment Boundary
Service-worker source and registration logic indicate an intended progressive-web-app/offline caching boundary, controlled from the browser entry path. Production deployment is static hosting of the CRA-generated build output; no repository-specific hosting provider or external service is identified.
- `src/serviceWorkerRegistration.js`
- `src/service-worker.js`
- `src/index.js`

Main entry points: [`src/App.js`](https://github.com/muhamadbarhan/portfolio/blob/main/src/App.js) (Portfolio page), [`src/components/Intro/intro.css`](https://github.com/muhamadbarhan/portfolio/blob/main/src/components/Intro/intro.css) (Colocated section CSS), [`src/index.js`](https://github.com/muhamadbarhan/portfolio/blob/main/src/index.js) (Browser bootstrap), [`src/components/Navbar/navbar.js`](https://github.com/muhamadbarhan/portfolio/blob/main/src/components/Navbar/navbar.js) (In-page navigation)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_browser["Browser Application"]
  node_browser_entry["Browser bootstrap<br/>React entry<br/>[index.js]"]
  node_app["Portfolio page<br/>React composition root<br/>[App.js]"]
  node_navbar["In-page navigation<br/>React component<br/>[navbar.js]"]
  node_footer["Footer<br/>React component<br/>[footer.js]"]
  node_sw_registration["Service worker registration<br/>PWA browser integration"]
  node_service_worker{{"Offline cache worker<br/>Service worker<br/>[service-worker.js]"}}
end

subgraph group_sections["Portfolio Sections"]
  node_intro["Introduction<br/>React section<br/>[intro.js]"]
  node_about["About profile<br/>React section<br/>[about.js]"]
  node_experience["Experience<br/>React section<br/>[experience.js]"]
  node_skills["Skills<br/>React section<br/>[skills.js]"]
  node_projects["Projects<br/>React section<br/>[Projects.js]"]
  node_certifications["Certifications<br/>React section<br/>[Certifications.js]"]
  node_contact["Contact<br/>React section<br/>[contact.js]"]
  node_section_styles["Colocated section CSS<br/>Component styles<br/>[intro.css]"]
end

subgraph group_static["Static Delivery"]
  node_public_shell["HTML shell<br/>CRA public shell<br/>[index.html]"]
  node_resume["Downloadable resume<br/>Imported PDF asset"]
  node_manifest["Web app manifest<br/>PWA metadata<br/>[manifest.json]"]
  node_search_metadata["Search discovery files<br/>Public metadata<br/>[robots.txt]"]
end

node_public_shell -->|"loads bundle"| node_browser_entry
node_browser_entry -->|"mounts"| node_app
node_browser_entry -->|"registers"| node_sw_registration
node_sw_registration -->|"installs"| node_service_worker
node_app -->|"renders"| node_navbar
node_app -->|"renders first"| node_intro
node_app -->|"renders"| node_about
node_app -->|"renders"| node_experience
node_app -->|"renders"| node_skills
node_app -->|"renders"| node_projects
node_app -->|"renders"| node_certifications
node_app -->|"renders"| node_contact
node_app -->|"renders last"| node_footer
node_navbar -.->|"navigates to"| node_intro
node_navbar -.->|"navigates to"| node_contact
node_section_styles -.->|"styles"| node_intro
node_section_styles -.->|"styles"| node_about
node_section_styles -.->|"styles"| node_projects
node_resume -.->|"available for download"| node_app
node_manifest -.->|"linked by"| node_public_shell
node_search_metadata -.->|"served alongside"| node_public_shell

click node_public_shell "https://github.com/muhamadbarhan/portfolio/blob/main/public/index.html"
click node_browser_entry "https://github.com/muhamadbarhan/portfolio/blob/main/src/index.js"
click node_app "https://github.com/muhamadbarhan/portfolio/blob/main/src/App.js"
click node_navbar "https://github.com/muhamadbarhan/portfolio/blob/main/src/components/Navbar/navbar.js"
click node_intro "https://github.com/muhamadbarhan/portfolio/blob/main/src/components/Intro/intro.js"
click node_about "https://github.com/muhamadbarhan/portfolio/blob/main/src/components/About/about.js"
click node_experience "https://github.com/muhamadbarhan/portfolio/blob/main/src/components/Experience/experience.js"
click node_skills "https://github.com/muhamadbarhan/portfolio/blob/main/src/components/Skills/skills.js"
click node_projects "https://github.com/muhamadbarhan/portfolio/blob/main/src/components/Projects/Projects.js"
click node_certifications "https://github.com/muhamadbarhan/portfolio/blob/main/src/components/Certifications/Certifications.js"
click node_contact "https://github.com/muhamadbarhan/portfolio/blob/main/src/components/Contact/contact.js"
click node_footer "https://github.com/muhamadbarhan/portfolio/blob/main/src/components/Footer/footer.js"
click node_section_styles "https://github.com/muhamadbarhan/portfolio/blob/main/src/components/Intro/intro.css"
click node_resume "https://github.com/muhamadbarhan/portfolio/blob/main/src/assets/Muhamad_Barhan_Fullstack_Developer_Resume.pdf"
click node_manifest "https://github.com/muhamadbarhan/portfolio/blob/main/public/manifest.json"
click node_search_metadata "https://github.com/muhamadbarhan/portfolio/blob/main/public/robots.txt"
click node_sw_registration "https://github.com/muhamadbarhan/portfolio/blob/main/src/serviceWorkerRegistration.js"
click node_service_worker "https://github.com/muhamadbarhan/portfolio/blob/main/src/service-worker.js"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_browser_entry,node_app,node_navbar,node_footer,node_sw_registration,node_service_worker toneBlue
class node_intro,node_about,node_experience,node_skills,node_projects,node_certifications,node_contact,node_section_styles toneAmber
class node_public_shell,node_resume,node_manifest,node_search_metadata toneMint
```

## Components

### Browser Application

React single-page portfolio runtime.

- [Browser bootstrap](https://github.com/muhamadbarhan/portfolio/blob/main/src/index.js): React entry · `src/index.js`
- [Portfolio page](https://github.com/muhamadbarhan/portfolio/blob/main/src/App.js): React composition root · Assembles the vertically ordered portfolio experience. · `src/App.js`
- [In-page navigation](https://github.com/muhamadbarhan/portfolio/blob/main/src/components/Navbar/navbar.js): React component · Primary control surface for section navigation. · `src/components/Navbar/navbar.js`
- [Footer](https://github.com/muhamadbarhan/portfolio/blob/main/src/components/Footer/footer.js): React component · `src/components/Footer/footer.js`
- [Service worker registration](https://github.com/muhamadbarhan/portfolio/blob/main/src/serviceWorkerRegistration.js): PWA browser integration · `src/serviceWorkerRegistration.js`
- [Offline cache worker](https://github.com/muhamadbarhan/portfolio/blob/main/src/service-worker.js): Service worker · Provides the intended offline caching boundary. · `src/service-worker.js`

### Portfolio Sections

Independently styled page content.

- [Introduction](https://github.com/muhamadbarhan/portfolio/blob/main/src/components/Intro/intro.js): React section · `src/components/Intro/intro.js`
- [About profile](https://github.com/muhamadbarhan/portfolio/blob/main/src/components/About/about.js): React section · `src/components/About/about.js`
- [Experience](https://github.com/muhamadbarhan/portfolio/blob/main/src/components/Experience/experience.js): React section · `src/components/Experience/experience.js`
- [Skills](https://github.com/muhamadbarhan/portfolio/blob/main/src/components/Skills/skills.js): React section · `src/components/Skills/skills.js`
- [Projects](https://github.com/muhamadbarhan/portfolio/blob/main/src/components/Projects/Projects.js): React section · `src/components/Projects/Projects.js`
- [Certifications](https://github.com/muhamadbarhan/portfolio/blob/main/src/components/Certifications/Certifications.js): React section · `src/components/Certifications/Certifications.js`
- [Contact](https://github.com/muhamadbarhan/portfolio/blob/main/src/components/Contact/contact.js): React section · `src/components/Contact/contact.js`
- [Colocated section CSS](https://github.com/muhamadbarhan/portfolio/blob/main/src/components/Intro/intro.css): Component styles · Major sections own isolated stylesheets. · `src/components/Intro/intro.css`

### Static Delivery

CRA public assets and imported files.

- [HTML shell](https://github.com/muhamadbarhan/portfolio/blob/main/public/index.html): CRA public shell · `public/index.html`
- [Downloadable resume](https://github.com/muhamadbarhan/portfolio/blob/main/src/assets/Muhamad_Barhan_Fullstack_Developer_Resume.pdf): Imported PDF asset · `src/assets/Muhamad_Barhan_Fullstack_Developer_Resume.pdf`
- [Web app manifest](https://github.com/muhamadbarhan/portfolio/blob/main/public/manifest.json): PWA metadata · `public/manifest.json`
- [Search discovery files](https://github.com/muhamadbarhan/portfolio/blob/main/public/robots.txt): Public metadata · Robots rules and sitemap are statically served. · `public/robots.txt`

## Connections

- HTML shell → Browser bootstrap: loads bundle
- Browser bootstrap → Portfolio page: mounts
- Browser bootstrap → Service worker registration: registers
- Service worker registration → Offline cache worker: installs
- Portfolio page → In-page navigation: renders
- Portfolio page → Introduction: renders first
- Portfolio page → About profile: renders
- Portfolio page → Experience: renders
- Portfolio page → Skills: renders
- Portfolio page → Projects: renders
- Portfolio page → Certifications: renders
- Portfolio page → Contact: renders
- Portfolio page → Footer: renders last
- In-page navigation → Introduction: navigates to
- In-page navigation → Contact: navigates to
- Colocated section CSS → Introduction: styles
- Colocated section CSS → About profile: styles
- Colocated section CSS → Projects: styles
- Downloadable resume → Portfolio page: available for download
- Web app manifest → HTML shell: linked by
- Search discovery files → HTML shell: served alongside