changed website link path

.dockerignore

@@ -0,0 +1,5 @@
+.git
+.dockerignore
+Dockerfile
+compose.yaml
+README.md

Dockerfile

@@ -4,6 +4,9 @@ COPY ./nginx.conf /etc/nginx/conf.d/default.conf
 
 COPY . /usr/share/nginx/html
 
+# nginx.conf is needed in the build context but must not be served
+RUN rm /usr/share/nginx/html/nginx.conf
+
 EXPOSE 8081
 
 CMD ["nginx", "-g", "daemon off;"]

README.md

@@ -0,0 +1,130 @@
+# Marvin Kraußer – Portfolio
+
+Personal portfolio website of Marvin Kraußer, Media Informatics student (B.Sc.) at Ulm University and working student in software engineering at Siemens Mobility.
+
+**Live:** https://marvinkrausser.github.io
+
+The site is built with plain HTML, CSS and JavaScript. It has no framework, no build step and no runtime dependencies.
+
+## Highlights
+
+- **Content-driven:** all texts, projects, career entries and tags live in language-specific JSON files (`lang/en.json`, `lang/de.json`). The page is generated from them at load time, so adding a project or a job means editing JSON, not markup.
+- **Bilingual (EN / DE):** the language is picked from a cookie, falling back to the browser language, and can be switched at any time. Dates are formatted per locale with `Intl.DateTimeFormat`.
+- **Light / dark theme:** the choice is persisted in a cookie.
+- **Responsive:** a fixed sidebar on desktop and a slide-in navigation on small screens and touch devices.
+- **Navigation:** a scroll spy highlights the section currently in view, and the scroll position is restored after a reload or language switch.
+- **Lightweight:** lazy-loaded images, no external libraries, no tracking.
+
+## Featured projects
+
+| Project | Stack | Repository |
+| --- | --- | --- |
+| CNN Website – bird classification and real-time face detection, served from a containerised backend | React, PyTorch, NGINX, Caddy, Docker Compose | [CNN_Website](https://github.com/MarvinKrausser/CNN_Website) |
+| PixelCNN Generator – autoregressive image generation with a seminar paper | Python, PyTorch, CUDA, LaTeX | [pixelcnn](https://github.com/MarvinKrausser/pixelcnn) |
+| Online Multiplayer Board Game – server, Unity client and AI players, built with five other students using Scrum | C#, .NET, Unity, Docker | [BoardgameServer](https://github.com/MarvinKrausser/BoardgameServer) |
+| Tower Defense Game – single-player game with level editor and A\* pathfinding | C#, Unity | [TowerDefenseGame](https://github.com/MarvinKrausser/TowerDefenseGame) |
+
+## How it works
+
+`index.html` contains only the static shell: sidebar, mobile navigation and empty containers. On load, `scripts/main.js` picks the language, fetches `lang/<lang>.json` and `config/img_config.json`, and renders everything else.
+
+The JavaScript is split into small ES modules, each with one responsibility:
+
+```
+scripts/
+  main.js               entry point: wires up the controls, loads data, renders
+  core/
+    cookies.js          cookie helpers
+    dom.js              small element-creation helper
+    dates.js            locale-aware date formatting
+    data.js             loading of language and image config files
+  ui/
+    theme.js            light / dark toggle
+    language.js         language detection and dropdown
+    navbar.js           sidebar and mobile navigation
+    scroll.js           scroll restoration and scroll spy
+  sections/
+    common.js           shared section skeleton (header, tags)
+    sidebar.js          status lines under the name
+    introduction.js
+    work.js             career entries
+    projects.js         project entries with image / text blocks
+```
+
+The stylesheets are organised the same way. `styles/main.css` imports the individual files in cascade order:
+
+```
+styles/
+  main.css              entry point, imports everything below
+  base/
+    variables.css       colours, fonts and sizes as CSS custom properties (light and dark)
+    base.css            resets and typography
+    utilities.css       helper classes
+  layout/
+    sidebar.css         fixed desktop sidebar
+    navbar.css          desktop navigation links
+    mobile_bar.css      slide-in mobile navigation
+    main_content.css    page margins and breakpoints
+  components/
+    theme_switch.css    light / dark toggle
+    lang_dropdown.css   language picker
+    mobile_menu_button.css
+    tags.css
+    text_link.css
+  sections/
+    introduction.css
+    section_header.css  shared header of work and project sections
+    project_blocks.css  image / text blocks
+    work.css            career entries
+```
+
+Colours, spacing and fonts are CSS custom properties, and dark mode is a single class that overrides them.
+
+## Project structure
+
+```
+.
+├── index.html          static shell
+├── lang/               en.json, de.json – all page content
+├── config/             img_config.json – image ids, paths and crop positions
+├── scripts/            ES modules (see above)
+├── styles/             stylesheets (see above)
+├── images/, images_jpg/  screenshots and diagrams for the projects
+├── pdfs/               seminar paper, talk slides, user and developer handbooks
+├── Dockerfile          NGINX image serving the site
+├── compose.yaml        Compose service definition
+└── nginx.conf
+```
+
+## Run locally
+
+The page loads its content with `fetch` and uses ES modules, so it has to be served over HTTP. Opening `index.html` directly from disk does not work.
+
+```bash
+git clone https://github.com/MarvinKrausser/MarvinKrausser.github.io.git
+cd MarvinKrausser.github.io
+python3 -m http.server 8000
+```
+
+Then open http://localhost:8000.
+
+### With Docker
+
+```bash
+docker build -t portfolio_website .
+docker run --rm -p 8081:8081 portfolio_website
+```
+
+The site is then available at http://localhost:8081. `compose.yaml` runs the same image as a service on an external Docker network (`cnn_network`), so it can sit behind a reverse proxy next to the other projects.
+
+## Adding content
+
+1. **Project:** add an entry to `content_projects` in both `lang/en.json` and `lang/de.json`. Each block references an image id from `config/img_config.json`. Use `--link--` inside a block's text to place an inline link from its `links` list.
+2. **Career entry:** add an entry to `content_work` with its role, dates, tasks and tech tags.
+
+The sidebar and mobile navigation entries are generated automatically.
+
+## Development notes
+
+- The repository follows a feature-branch workflow, so `main` stays deployable.
+- No build tooling is involved, so a change to a file is visible on the next reload.

index.html

@@ -5,10 +5,7 @@
   <link rel="icon" href="images/generated_two_no_background.png">
   <meta charset="UTF-8">
   <title id="website_title"></title>
-  <link rel="stylesheet" href="styles/main_style.css">
-  <link rel="stylesheet" href="styles/sidebar_style.css">
-  <link rel="stylesheet" href="styles/mobile_bar_style.css">
-  <link rel="stylesheet" href="styles/projects_style.css">
+  <link rel="stylesheet" href="styles/main.css">
 </head>
 
 <body>
@@ -78,7 +75,7 @@
     <div id="projects-section"></div>
   </div>
 
-  <script src="scripts/main_page.js"></script>
+  <script type="module" src="scripts/main.js"></script>
 
 </body>
 

lang/de.json

@@ -6,8 +6,46 @@
   "profession": "Medieninformatik",
   "workplace": "Universität Ulm",
   "github_desc": "Auf GitHub ansehen ↗",
-  "navbar_group": "Projekte",
-  "content": [
+  "navbar_group_work": "Berufserfahrung",
+  "navbar_group_projects": "Projekte",
+  "content_work": [
+    {
+      "id": "siemens_mobility",
+      "title": "Siemens Mobility",
+      "company": "Siemens Mobility GmbH",
+      "description": "Werkstudent Softwareentwicklung in Simulationsumgebung (Hybrid)",
+      "type": "Hybrid",
+      "tasks": [
+        {
+          "title": "Netzwerkentwicklung & Integration",
+          "content": "Konzeption und Implementierung einer stabilen Remote-Schnittstelle zur Anbindung externer Clients an eine Unity-Simulationsumgebung."
+        },
+        {
+          "title": "Server-Infrastruktur & Deployment",
+          "content": "Einrichtung, Absicherung und Administration eines Debian 13-Servers sowie Bereitstellung der Anwendungsinstanzen."
+        },
+        {
+          "title": "Agile Teamarbeit & Quality Assurance",
+          "content": "Aktive Kollaboration im Entwicklerteam unter Anwendung von Feature-Branching-Workflows (Git) und systematischen Code-Reviews."
+        }
+      ],
+      "tech": [
+        "Unity",
+        "WebRTC",
+        "Linux",
+        "GitLab",
+        "C#",
+        "FFmpeg"
+      ],
+      "start": "2026-05-15",
+      "end": "heute",
+      "locale": "de-DE",
+      "from": "von",
+      "to": "bis",
+      "at": "bei"
+    }
+  ],
+  "content_projects": [
     {
       "id": "cnn_website",
       "title": "CNN Website",
@@ -28,7 +66,7 @@
           "links": [
             {
               "id": "website",
-              "link": "https://marvinkrausser.com/bird_cnn",
+              "link": "https://marvinkrausser.com",
               "desc": "Website ↗"
             }
           ]

lang/en.json

@@ -6,8 +6,46 @@
   "profession": "Media Informatics",
   "workplace": "Ulm University",
   "github_desc": "View on GitHub ↗",
-  "navbar_group": "Projects",
-  "content": [
+  "navbar_group_work": "Career",
+  "navbar_group_projects": "Projects",
+  "content_work": [
+    {
+      "id": "siemens_mobility",
+      "title": "Siemens Mobility",
+      "company": "Siemens Mobility GmbH",
+      "description": "Working Student Software Engineering in Simulation Environment (Hybrid)",
+      "type": "Hybrid",
+      "tasks": [
+        {
+          "title": "Network Development & Integration",
+          "content": "Design and implementation of a stable remote interface to connect external clients to a Unity simulation environment."
+        },
+        {
+          "title": "Server Infrastructure & Deployment",
+          "content": "Setup, securing, and administration of a Debian 13 server as well as deployment of application instances."
+        },
+        {
+          "title": "Agile Teamwork & Quality Assurance",
+          "content": "Active collaboration within the development team using feature-branching workflows (Git) and systematic code reviews."
+        }
+      ],
+      "tech": [
+        "Unity",
+        "WebRTC",
+        "Linux",
+        "GitLab",
+        "C#",
+        "FFmpeg"
+      ],
+      "start": "2026-05-15",
+      "end": "present",
+      "locale": "en-US",
+      "from": "from",
+      "to": "to",
+      "at": "at"
+    }
+  ],
+  "content_projects": [
     {
       "id": "cnn_website",
       "title": "CNN Website",
@@ -28,7 +66,7 @@
           "links": [
             {
               "id": "website",
-              "link": "https://marvinkrausser.com/bird_cnn",
+              "link": "https://marvinkrausser.com",
               "desc": "Website ↗"
             }
           ]

nginx.conf

@@ -1,6 +1,26 @@
 server {
     listen 8081;
     server_name localhost;
+    server_tokens off;
 
     root /usr/share/nginx/html;
+
+    # Compression
+    gzip on;
+    gzip_types text/css application/javascript application/json image/svg+xml;
+
+    # Security headers
+    add_header X-Content-Type-Options "nosniff" always;
+    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
+
+    # Never serve dotfiles (.git, .dockerignore, ...)
+    location ~ /\. {
+        deny all;
+    }
+
+    # Images and PDFs rarely change. HTML, JS, CSS and JSON are not fingerprinted,
+    # so they keep nginx's default (ETag / Last-Modified revalidation).
+    location ~* \.(jpg|png|pdf)$ {
+        expires 30d;
+    }
 }

scripts/core/cookies.js

@@ -0,0 +1,14 @@
+export function setCookie(name, value, maxAge) {
+    document.cookie = `${name}=${value}; path=/; max-age=${maxAge}`;
+}
+
+export function getCookie(name) {
+    const cookies = document.cookie.split("; ");
+
+    for (let c of cookies) {
+        const [key, value] = c.split("=");
+        if (key === name) return value;
+    }
+
+    return null;
+}

scripts/core/data.js

@@ -0,0 +1,9 @@
+export async function loadContent(lang) {
+    const response = await fetch(`./lang/${lang}.json`);
+    return response.json();
+}
+
+export async function loadImageConfig() {
+    const response = await fetch("./config/img_config.json");
+    return response.json();
+}

scripts/core/dates.js

@@ -0,0 +1,19 @@
+export function formatDate(date, locale) {
+    const dateObj = new Date(date);
+
+    if (isNaN(dateObj.getTime())) {
+        return date;
+    }
+
+    return new Intl.DateTimeFormat(locale || "de-DE", {
+        dateStyle: "medium"
+    }).format(dateObj);
+}
+
+// "from <start> to <end>", with the wording taken from the language file.
+export function formatDateRange(item) {
+    const startDate = formatDate(item.start, item.locale);
+    const endDate = formatDate(item.end, item.locale);
+
+    return item.from + "\n" + startDate + "\n" + item.to + "\n" + endDate;
+}

scripts/core/dom.js

@@ -0,0 +1,7 @@
+// Creates an element with an optional class name and text content.
+export function el(tag, className, text) {
+    const element = document.createElement(tag);
+    if (className) element.className = className;
+    if (text !== undefined) element.textContent = text;
+    return element;
+}

scripts/main.js

@@ -0,0 +1,41 @@
+import { loadContent, loadImageConfig } from "./core/data.js";
+import { detectLanguage, setupLanguageDropdown } from "./ui/language.js";
+import { setupThemeToggle } from "./ui/theme.js";
+import { createNavbar, setupMobileNavbar, hideMobileNavbar } from "./ui/navbar.js";
+import { setupScrollRestoration, restoreScroll, setupScrollSpy } from "./ui/scroll.js";
+import { renderSidebarTop } from "./sections/sidebar.js";
+import { renderIntroduction } from "./sections/introduction.js";
+import { renderWork } from "./sections/work.js";
+import { renderProjects } from "./sections/projects.js";
+
+const lang = detectLanguage();
+
+// Each control exists twice: sidebar (desktop) and mobile bar.
+setupThemeToggle("themeToggle", ["themeToggle2"]);
+setupThemeToggle("themeToggle2", ["themeToggle"]);
+setupLanguageDropdown(lang, "lang-button", "lang-menu", "lang-dropdown");
+setupLanguageDropdown(lang, "lang-button2", "lang-menu2", "lang-dropdown2");
+
+setupScrollRestoration();
+
+async function init() {
+    const data = await loadContent(lang);
+    const imageConfig = await loadImageConfig();
+
+    document.getElementById("website_title").textContent = data.title_website;
+
+    setupMobileNavbar();
+    const navbar = createNavbar();
+    const container = document.getElementById("projects-section");
+
+    renderSidebarTop(data);
+    renderIntroduction(data, navbar);
+    renderWork(container, navbar, data);
+    renderProjects(container, navbar, data, imageConfig);
+
+    restoreScroll();
+    setupScrollSpy();
+    hideMobileNavbar();
+}
+
+init();

scripts/main_page.js

@@ -1,367 +0,0 @@
-let lang = getCookie("lang");
-if (lang == null) {
-    lang = navigator.language.split("-")[0];
-}
-if (lang != "en" && lang != "de") {
-    lang = "en";
-}
-
-document.documentElement.lang = lang;
-
-function setupLangDropdown(buttonId, menuId, dropdownId, themeToggle, themeToggleOthers) {
-    const toggle = document.getElementById(themeToggle);
-    const toggleElements = themeToggleOthers.map(id => document.getElementById(id));
-
-    toggle.addEventListener("change", () => {
-        document.documentElement.classList.toggle("dark", toggle.checked);
-        if (toggle.checked) {
-            setCookie("theme", "dark", 60 * 60 * 24 * 7);
-            toggleElements.forEach(element => {
-                element.checked = true;
-            });
-        }
-        else {
-            setCookie("theme", "light", 60 * 60 * 24 * 7);
-            toggleElements.forEach(element => {
-                element.checked = false;
-            });
-        }
-
-    });
-
-    const theme = getCookie("theme");
-
-    if (theme === "dark") {
-        document.documentElement.classList.add("dark");
-        toggle.checked = true;
-    }
-
-    const button = document.getElementById(buttonId);
-    const menu = document.getElementById(menuId);
-    const dropdown = document.getElementById(dropdownId);
-    const items = menu.querySelectorAll(".lang-item");
-
-    button.textContent = lang;
-
-    button.addEventListener("click", (e) => {
-        e.stopPropagation();
-
-        items.forEach(item => {
-            item.classList.toggle("hidden", item.dataset.lang == lang);
-        });
-
-        menu.classList.toggle("hidden");
-        dropdown.classList.toggle("show-border");
-    });
-
-    items.forEach(item => {
-        item.addEventListener("click", () => {
-            const lang_selected = item.dataset.lang;
-
-            button.textContent = item.textContent;
-
-            menu.classList.add("hidden");
-            dropdown.classList.remove("show-border");
-
-            items.forEach(el => el.classList.add("hidden"));
-
-            setCookie("lang", lang_selected, "3600");
-            location.reload();
-        });
-    });
-
-    document.addEventListener("click", (e) => {
-        if (!e.target.closest(`#${dropdownId}`)) {
-            menu.classList.add("hidden");
-            dropdown.classList.remove("show-border");
-            items.forEach(el => el.classList.add("hidden"));
-        }
-    });
-}
-setupLangDropdown("lang-button", "lang-menu", "lang-dropdown", "themeToggle", ["themeToggle2"]);
-setupLangDropdown("lang-button2", "lang-menu2", "lang-dropdown2", "themeToggle2", ["themeToggle"]);
-
-history.scrollRestoration = "manual";
-
-function saveScroll() {
-    sessionStorage.setItem("scrollY", window.scrollY);
-}
-
-function restoreScroll() {
-    const scrollY = sessionStorage.getItem("scrollY");
-    if (scrollY !== null) {
-
-        document.documentElement.style.scrollBehavior = "auto";
-
-        window.scrollTo(0, parseInt(scrollY));
-
-        document.documentElement.style.scrollBehavior = "smooth";
-    }
-}
-
-window.addEventListener("beforeunload", saveScroll);
-
-function setupObserver() {
-    const sections = document.querySelectorAll("[data-nav]");
-    const navLinks = document.querySelectorAll(".nav-link");
-
-    const observer = new IntersectionObserver(entries => {
-        entries.forEach(entry => {
-            if (entry.isIntersecting) {
-
-                navLinks.forEach(link => {
-                    link.classList.toggle(
-                        "active",
-                        link.dataset.target === entry.target.id
-                    );
-                });
-
-            }
-        });
-    }, {
-        threshold: 0,
-        rootMargin: "-10% 0px -80% 0px"
-    });
-
-    sections.forEach(section => observer.observe(section));
-}
-
-async function loadData() {
-    const response = await fetch(`./lang/${lang}.json`);
-    const image_response = await fetch(`./config/img_config.json`)
-    const image_config = await image_response.json()
-    const data = await response.json();
-
-    const website_title = document.getElementById("website_title");
-    website_title.textContent = data.title_website;
-
-    const introduction = document.getElementById("introduction");
-    const container = document.getElementById("projects-section");
-    const navbar = document.getElementById("navbar");
-    const sidebar_top = document.getElementById("sidebar-top-content");
-
-    const navbar_mobile = document.getElementById("navbar-mobile");
-    const button_mobile2 = document.getElementById("button-mobile");
-
-    document.addEventListener("click", (e) => {
-        if (!e.target.closest("#navbar-mobile") && !e.target.closest("#button-mobile") && !navbar_mobile.classList.contains("inactive")) {
-            navbar_mobile.classList.add("inactive");
-            button_mobile2.classList.remove("inactive");
-        }
-    });
-
-    const navbar_mobile_links = document.getElementById("navbar-mobile-links");
-    const button_navbar_mobile = document.createElement("button");
-    const button_mobile = document.getElementById("button-mobile");
-    button_navbar_mobile.textContent = "";
-    button_mobile.textContent = "";
-    button_navbar_mobile.classList = "button-mobile navbar";
-    navbar_mobile_links.appendChild(button_navbar_mobile);
-    button_navbar_mobile.addEventListener("click", () => {
-        navbar_mobile.classList.toggle("inactive");
-        button_mobile.classList.toggle("inactive");
-    });
-    button_mobile.addEventListener("click", () => {
-        navbar_mobile.classList.toggle("inactive");
-        button_mobile.classList.toggle("inactive");
-    });
-
-    const sidebar_top_status = document.createElement("p");
-    sidebar_top_status.textContent = data.status;
-    sidebar_top.appendChild(sidebar_top_status);
-
-    const sidebar_top_profession = document.createElement("p");
-    sidebar_top_profession.textContent = data.profession;
-    sidebar_top.appendChild(sidebar_top_profession);
-
-    const sidebar_top_workplace = document.createElement("p");
-    sidebar_top_workplace.textContent = data.workplace;
-    sidebar_top.appendChild(sidebar_top_workplace);
-
-    const headline_introduction = document.createElement("h1");
-    headline_introduction.textContent = data.title_introduction;
-    introduction.appendChild(headline_introduction);
-
-    const content_introduction = document.createElement("p");
-    content_introduction.textContent = data.content_introduction;
-    introduction.appendChild(content_introduction);
-
-    const github_link_introduction = document.createElement("a");
-    github_link_introduction.textContent = "GitHub ↗"
-    github_link_introduction.className = "text-link introduction";
-    github_link_introduction.href = "https://github.com/marvinkrausser";
-    github_link_introduction.target = "_blank";
-    github_link_introduction.rel = "noopener noreferrer";
-    introduction.appendChild(github_link_introduction);
-
-    create_navbar_entry(navbar, navbar_mobile_links, data.title_introduction, "introduction", 0);
-
-    const navbar_group = document.createElement("li");
-    navbar_group.className = "navbar-group";
-    navbar_group.textContent = data.navbar_group
-    navbar.appendChild(navbar_group);
-
-
-    data.content.forEach((item, j) => {
-        const project = document.createElement("section");
-        project.className = "project-section";
-        project.id = item.id;
-        project.setAttribute("data-nav", item.id);
-        container.appendChild(project);
-
-        create_navbar_entry(navbar, navbar_mobile_links, item.title, item.id, j + 1);
-
-        const header = document.createElement("div");
-        header.className = "section-header";
-        project.appendChild(header);
-
-        const headerTitle = document.createElement("h1");
-        headerTitle.className = "section-title";
-        headerTitle.textContent = item.title;
-        header.appendChild(headerTitle);
-
-        const headerDesc = document.createElement("p");
-        headerDesc.className = "section-desc";
-        headerDesc.textContent = item.description;
-        header.appendChild(headerDesc);
-
-        const tags = document.createElement("div");
-        tags.className = "tags";
-        header.appendChild(tags);
-
-        item.tags.forEach(tag_json => {
-            const tag = document.createElement("span");
-            tag.className = "tag";
-            tag.textContent = tag_json;
-            tags.appendChild(tag);
-        });
-
-        const content_blocks = document.createElement("div");
-        content_blocks.className = "content-blocks";
-        project.appendChild(content_blocks);
-
-        item.blocks.forEach((content, i) => {
-            const content_block = document.createElement("div");
-            content_block.className = "content-block";
-            content_blocks.appendChild(content_block);
-
-            const block_image = document.createElement("div");
-
-            const image = document.createElement("img");
-            const image_id = content.image;
-            const image_object = image_config.images.find(img => img.id === image_id);
-            image.className = image_object.image_pos;
-            image.src = image_object.image;
-            image.loading = "lazy";
-            block_image.appendChild(image);
-
-            const block_text = document.createElement("div");
-
-            const text_title = document.createElement("h2");
-            text_title.textContent = content.heading;
-            block_text.appendChild(text_title);
-
-            const parts = content.text.split("--link--");
-            const text_content = document.createElement("div");
-            text_content.className = "text-content";
-            block_text.appendChild(text_content);
-
-            parts.forEach((part, i) => {
-                const text = document.createElement("span");
-                text.textContent = part;
-                text_content.appendChild(text);
-
-                if (i < parts.length - 1) {
-                    const link_list = content.links;
-                    const a = document.createElement("a");
-                    a.href = link_list[i].link;
-                    a.textContent = link_list[i].desc;
-                    a.target = "_blank";
-                    a.rel = "noopener noreferrer";
-                    a.className = "text-link";
-
-                    text_content.appendChild(a);
-                }
-            });
-
-            if (i % 2 == 1) {
-                block_image.className = "block-image right";
-                block_text.className = "block-text left";
-                content_block.appendChild(block_text);
-                content_block.appendChild(block_image);
-            } else {
-                block_image.className = "block-image left";
-                block_text.className = "block-text right";
-                content_block.appendChild(block_image);
-                content_block.appendChild(block_text);
-            }
-        });
-
-        const github_link = document.createElement("div");
-        github_link.className = "link-row";
-        project.appendChild(github_link);
-
-        const link = document.createElement("a");
-        link.href = item.github;
-        link.target = "_blank";
-        link.rel = "noopener noreferrer";
-        link.className = "text-link";
-        link.textContent = data.github_desc;
-        github_link.appendChild(link);
-    });
-    restoreScroll();
-    setupObserver();
-
-    navbar_mobile.classList.add("inactive");
-}
-
-loadData();
-
-function create_navbar_entry(navbar, navbar_mobile_links, title, id, j) {
-    const navbar_item = document.createElement("li");
-    navbar_item.className = "navbar-item";
-    navbar.appendChild(navbar_item);
-
-    const navbar_link = document.createElement("a");
-    navbar_link.className = "nav-link";
-    navbar_link.href = `#${id}`;
-
-    const idx = document.createElement("span");
-    idx.className = "idx";
-    idx.textContent = String(j).padStart(2, "0") + "\u00A0\u00A0\u00A0";
-    navbar_link.appendChild(idx);
-
-    const text = document.createTextNode(title);
-    navbar_link.appendChild(text);
-    navbar_link.dataset.target = id;
-    navbar_item.appendChild(navbar_link);
-
-    create_navbar_entry_mobile(navbar_mobile_links, title, id)
-}
-
-function create_navbar_entry_mobile(navbar_mobile_links, title, id) {
-    const navbar_item = document.createElement("li");
-    navbar_item.className = "navbar-item-mobile";
-    navbar_mobile_links.appendChild(navbar_item);
-
-    const navbar_link = document.createElement("a");
-    navbar_link.className = "nav-link-mobile";
-    navbar_link.href = `#${id}`;
-    navbar_link.textContent = title;
-    navbar_item.appendChild(navbar_link);
-}
-
-function setCookie(name, value, maxAge) {
-    document.cookie = `${name}=${value}; path=/; max-age=${maxAge}`;
-}
-
-function getCookie(name) {
-    const cookies = document.cookie.split("; ");
-
-    for (let c of cookies) {
-        const [key, value] = c.split("=");
-        if (key === name) return value;
-    }
-
-    return null;
-}

scripts/sections/common.js

@@ -0,0 +1,31 @@
+import { el } from "../core/dom.js";
+
+// Shared skeleton of work and project sections: <section> + header with title,
+// plus the matching navbar entry.
+export function createSection(container, navbar, item, index) {
+    const section = el("section", "project-section");
+    section.id = item.id;
+    section.setAttribute("data-nav", item.id);
+    container.appendChild(section);
+
+    navbar.addEntry(item.title, item.id, index + 1);
+
+    const header = el("div", "section-header");
+    section.appendChild(header);
+    header.appendChild(el("h1", "section-title", item.title));
+
+    return { section, header };
+}
+
+export function appendDescription(header, text) {
+    header.appendChild(el("p", "section-desc", text));
+}
+
+export function appendTags(header, tags) {
+    const tagList = el("div", "tags");
+    header.appendChild(tagList);
+
+    tags.forEach(tag => {
+        tagList.appendChild(el("span", "tag", tag));
+    });
+}

scripts/sections/introduction.js

@@ -0,0 +1,16 @@
+import { el } from "../core/dom.js";
+
+export function renderIntroduction(data, navbar) {
+    const introduction = document.getElementById("introduction");
+
+    introduction.appendChild(el("h1", "", data.title_introduction));
+    introduction.appendChild(el("p", "", data.content_introduction));
+
+    const githubLink = el("a", "text-link introduction", "GitHub ↗");
+    githubLink.href = "https://github.com/marvinkrausser";
+    githubLink.target = "_blank";
+    githubLink.rel = "noopener noreferrer";
+    introduction.appendChild(githubLink);
+
+    navbar.addEntry(data.title_introduction, "introduction", 0);
+}

scripts/sections/projects.js

@@ -0,0 +1,90 @@
+import { el } from "../core/dom.js";
+import { createSection, appendDescription, appendTags } from "./common.js";
+
+export function renderProjects(container, navbar, data, imageConfig) {
+    navbar.addGroup(data.navbar_group_projects);
+
+    data.content_projects.forEach((item, index) => {
+        const { section, header } = createSection(container, navbar, item, index);
+
+        appendDescription(header, item.description);
+        appendTags(header, item.tags);
+
+        const blocks = el("div", "content-blocks");
+        section.appendChild(blocks);
+        item.blocks.forEach((block, i) => {
+            blocks.appendChild(createBlock(block, i, imageConfig));
+        });
+
+        section.appendChild(createGithubLink(item.github, data.github_desc));
+    });
+}
+
+// One image + text block. Odd blocks put the image on the right.
+function createBlock(block, index, imageConfig) {
+    const contentBlock = el("div", "content-block");
+    const blockImage = createImage(block.image, imageConfig);
+    const blockText = createText(block);
+
+    if (index % 2 == 1) {
+        blockImage.className = "block-image right";
+        blockText.className = "block-text left";
+        contentBlock.appendChild(blockText);
+        contentBlock.appendChild(blockImage);
+    } else {
+        blockImage.className = "block-image left";
+        blockText.className = "block-text right";
+        contentBlock.appendChild(blockImage);
+        contentBlock.appendChild(blockText);
+    }
+
+    return contentBlock;
+}
+
+function createImage(imageId, imageConfig) {
+    const blockImage = el("div");
+    const imageObject = imageConfig.images.find(img => img.id === imageId);
+
+    const image = el("img", imageObject.image_pos);
+    image.src = imageObject.image;
+    image.loading = "lazy";
+    blockImage.appendChild(image);
+
+    return blockImage;
+}
+
+function createText(block) {
+    const blockText = el("div");
+    blockText.appendChild(el("h2", "", block.heading));
+
+    // "--link--" in the text marks where the next entry of block.links goes.
+    const parts = block.text.split("--link--");
+    const textContent = el("div", "text-content");
+    blockText.appendChild(textContent);
+
+    parts.forEach((part, i) => {
+        textContent.appendChild(el("span", "", part));
+
+        if (i < parts.length - 1) {
+            const link = el("a", "text-link", block.links[i].desc);
+            link.href = block.links[i].link;
+            link.target = "_blank";
+            link.rel = "noopener noreferrer";
+            textContent.appendChild(link);
+        }
+    });
+
+    return blockText;
+}
+
+function createGithubLink(url, text) {
+    const row = el("div", "link-row");
+
+    const link = el("a", "text-link", text);
+    link.href = url;
+    link.target = "_blank";
+    link.rel = "noopener noreferrer";
+    row.appendChild(link);
+
+    return row;
+}

scripts/sections/sidebar.js

@@ -0,0 +1,10 @@
+import { el } from "../core/dom.js";
+
+// Status / profession / workplace lines below the name.
+export function renderSidebarTop(data) {
+    const content = document.getElementById("sidebar-top-content");
+
+    content.appendChild(el("p", "", data.status));
+    content.appendChild(el("p", "", data.profession));
+    content.appendChild(el("p", "", data.workplace));
+}

scripts/sections/work.js

@@ -0,0 +1,30 @@
+import { el } from "../core/dom.js";
+import { formatDateRange } from "../core/dates.js";
+import { createSection, appendDescription, appendTags } from "./common.js";
+
+export function renderWork(container, navbar, data) {
+    navbar.addGroup(data.navbar_group_work);
+
+    data.content_work.forEach((item, index) => {
+        const { section, header } = createSection(container, navbar, item, index);
+
+        appendDescription(header, item.description);
+        appendDescription(header, formatDateRange(item) + "\n" + item.at + "\n" + item.company);
+        appendTags(header, item.tech);
+
+        section.appendChild(createTasks(item.tasks));
+    });
+}
+
+function createTasks(tasks) {
+    const tasksDiv = el("div", "tasks-div");
+
+    tasks.forEach(task => {
+        const taskDiv = el("div", "task-div");
+        taskDiv.appendChild(el("span", "task-title", task.title + ": "));
+        taskDiv.appendChild(el("span", "task-content", task.content));
+        tasksDiv.appendChild(taskDiv);
+    });
+
+    return tasksDiv;
+}

scripts/ui/language.js

@@ -0,0 +1,61 @@
+import { getCookie, setCookie } from "../core/cookies.js";
+
+const SUPPORTED_LANGUAGES = ["en", "de"];
+
+// Language from cookie, else browser language, else "en".
+export function detectLanguage() {
+    let lang = getCookie("lang");
+    if (lang == null) {
+        lang = navigator.language.split("-")[0];
+    }
+    if (!SUPPORTED_LANGUAGES.includes(lang)) {
+        lang = "en";
+    }
+
+    document.documentElement.lang = lang;
+    return lang;
+}
+
+export function setupLanguageDropdown(lang, buttonId, menuId, dropdownId) {
+    const button = document.getElementById(buttonId);
+    const menu = document.getElementById(menuId);
+    const dropdown = document.getElementById(dropdownId);
+    const items = menu.querySelectorAll(".lang-item");
+
+    button.textContent = lang;
+
+    button.addEventListener("click", (e) => {
+        e.stopPropagation();
+
+        items.forEach(item => {
+            item.classList.toggle("hidden", item.dataset.lang == lang);
+        });
+
+        menu.classList.toggle("hidden");
+        dropdown.classList.toggle("show-border");
+    });
+
+    items.forEach(item => {
+        item.addEventListener("click", () => {
+            const lang_selected = item.dataset.lang;
+
+            button.textContent = item.textContent;
+
+            menu.classList.add("hidden");
+            dropdown.classList.remove("show-border");
+
+            items.forEach(el => el.classList.add("hidden"));
+
+            setCookie("lang", lang_selected, "3600");
+            location.reload();
+        });
+    });
+
+    document.addEventListener("click", (e) => {
+        if (!e.target.closest(`#${dropdownId}`)) {
+            menu.classList.add("hidden");
+            dropdown.classList.remove("show-border");
+            items.forEach(el => el.classList.add("hidden"));
+        }
+    });
+}

scripts/ui/navbar.js

@@ -0,0 +1,73 @@
+import { el } from "../core/dom.js";
+
+const navbarMobile = () => document.getElementById("navbar-mobile");
+const openButton = () => document.getElementById("button-mobile");
+
+// Mobile bar: open/close buttons and closing on outside click.
+export function setupMobileNavbar() {
+    const navbar = navbarMobile();
+    const button = openButton();
+    const links = document.getElementById("navbar-mobile-links");
+
+    const toggle = () => {
+        navbar.classList.toggle("inactive");
+        button.classList.toggle("inactive");
+    };
+
+    document.addEventListener("click", (e) => {
+        if (!e.target.closest("#navbar-mobile") && !e.target.closest("#button-mobile") && !navbar.classList.contains("inactive")) {
+            navbar.classList.add("inactive");
+            button.classList.remove("inactive");
+        }
+    });
+
+    const closeButton = el("button", "button-mobile navbar", "");
+    links.appendChild(closeButton);
+    closeButton.addEventListener("click", toggle);
+
+    button.textContent = "";
+    button.addEventListener("click", toggle);
+}
+
+export function hideMobileNavbar() {
+    navbarMobile().classList.add("inactive");
+}
+
+// Desktop sidebar navigation and mobile bar links, filled together.
+export function createNavbar() {
+    const desktop = document.getElementById("navbar");
+    const mobile = document.getElementById("navbar-mobile-links");
+
+    return {
+        addGroup(title) {
+            desktop.appendChild(el("li", "navbar-group", title));
+        },
+
+        addEntry(title, id, index) {
+            addDesktopEntry(desktop, title, id, index);
+            addMobileEntry(mobile, title, id);
+        }
+    };
+}
+
+function addDesktopEntry(navbar, title, id, index) {
+    const item = el("li", "navbar-item");
+    navbar.appendChild(item);
+
+    const link = el("a", "nav-link");
+    link.href = `#${id}`;
+    link.dataset.target = id;
+    item.appendChild(link);
+
+    link.appendChild(el("span", "idx", String(index).padStart(2, "0") + "   "));
+    link.appendChild(document.createTextNode(title));
+}
+
+function addMobileEntry(navbar, title, id) {
+    const item = el("li", "navbar-item-mobile");
+    navbar.appendChild(item);
+
+    const link = el("a", "nav-link-mobile", title);
+    link.href = `#${id}`;
+    item.appendChild(link);
+}

scripts/ui/scroll.js

@@ -0,0 +1,48 @@
+// Scroll position restore across reloads (e.g. after switching language).
+
+function saveScroll() {
+    sessionStorage.setItem("scrollY", window.scrollY);
+}
+
+export function setupScrollRestoration() {
+    history.scrollRestoration = "manual";
+    window.addEventListener("beforeunload", saveScroll);
+}
+
+export function restoreScroll() {
+    const scrollY = sessionStorage.getItem("scrollY");
+    if (scrollY !== null) {
+
+        document.documentElement.style.scrollBehavior = "auto";
+
+        window.scrollTo(0, parseInt(scrollY));
+
+        document.documentElement.style.scrollBehavior = "smooth";
+    }
+}
+
+// Highlights the sidebar link of the section currently in view.
+export function setupScrollSpy() {
+    const sections = document.querySelectorAll("[data-nav]");
+    const navLinks = document.querySelectorAll(".nav-link");
+
+    const observer = new IntersectionObserver(entries => {
+        entries.forEach(entry => {
+            if (entry.isIntersecting) {
+
+                navLinks.forEach(link => {
+                    link.classList.toggle(
+                        "active",
+                        link.dataset.target === entry.target.id
+                    );
+                });
+
+            }
+        });
+    }, {
+        threshold: 0,
+        rootMargin: "-10% 0px -80% 0px"
+    });
+
+    sections.forEach(section => observer.observe(section));
+}

scripts/ui/theme.js

@@ -0,0 +1,22 @@
+import { getCookie, setCookie } from "../core/cookies.js";
+
+const THEME_MAX_AGE = 60 * 60 * 24 * 7;
+
+// Wires a dark-mode toggle and keeps the other toggles (sidebar / mobile bar) in sync.
+export function setupThemeToggle(toggleId, otherToggleIds) {
+    const toggle = document.getElementById(toggleId);
+    const otherToggles = otherToggleIds.map(id => document.getElementById(id));
+
+    toggle.addEventListener("change", () => {
+        document.documentElement.classList.toggle("dark", toggle.checked);
+        setCookie("theme", toggle.checked ? "dark" : "light", THEME_MAX_AGE);
+        otherToggles.forEach(other => {
+            other.checked = toggle.checked;
+        });
+    });
+
+    if (getCookie("theme") === "dark") {
+        document.documentElement.classList.add("dark");
+        toggle.checked = true;
+    }
+}

styles/base/base.css

@@ -0,0 +1,34 @@
+html {
+    scroll-behavior: smooth;
+}
+
+body {
+    background: linear-gradient(135deg, var(--bg), var(--bg2));
+    margin: 0;
+}
+
+p,
+span,
+li,
+a {
+    color: var(--muted);
+    line-height: 1.7;
+    font-size: var(--font-size);
+    font-family: var(--sans);
+}
+
+h1,
+h2,
+h3 {
+    color: var(--text);
+    font-family: var(--serif);
+}
+
+a {
+
+    text-decoration: none;
+}
+
+* {
+    box-sizing: border-box;
+}

styles/base/utilities.css

@@ -0,0 +1,3 @@
+.hidden {
+    display: none;
+}

styles/base/variables.css

@@ -0,0 +1,22 @@
+:root {
+    --bg: #5E4C93;
+    --bg2: #1b162a;
+    --text: #FFFFFF;
+    --surface: #3e3261;
+    --muted: #C5C1D1;
+    --border: #20192a;
+    --serif: Georgia, serif;
+    --sans: system-ui, sans-serif;
+    --nav-w: 240px;
+    --nav-mobile-w: min(60vw, 400px);
+    --font-size: 1rem;
+}
+
+.dark {
+    --bg: #130e21;
+    --bg2: #090710;
+    --text: #FFFFFF;
+    --surface: #3e3261;
+    --muted: #C5C1D1;
+    --border: #726684;
+}

styles/components/lang_dropdown.css

@@ -0,0 +1,73 @@
+/* Language Dropdown*/
+
+.lang-dropdown {
+    user-select: none;
+    display: flex;
+    gap: 3px;
+    width: 91px;
+    height: 40px;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    border: none;
+    background: none;
+    -webkit-user-select: none;
+    -ms-user-select: none;
+    user-select: none;
+}
+
+.lang-dropdown.show-border {
+    border: 1px solid var(--border);
+    border-radius: 8px;
+    background: var(--bg2);
+}
+
+.lang-menu {
+    display: flex;
+    align-items: center;
+    gap: 3px;
+}
+
+.lang-item {
+    cursor: pointer;
+    background-color: var(--surface);
+    width: 40px;
+    height: 24px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    border: 1px solid var(--border);
+    border-radius: 8px;
+    color: var(--muted);
+}
+
+@media (hover: hover) and (pointer: fine) {
+    .lang-item:hover {
+        border-color: var(--text);
+        color: var(--text);
+    }
+}
+
+.lang-button {
+    width: 40px;
+    height: 30px;
+    appearance: none;
+    -webkit-appearance: none;
+    -moz-appearance: none;
+
+    cursor: pointer;
+    background-color: var(--surface);
+    color: var(--muted);
+    border-radius: 8px;
+    border: 1px solid var(--border);
+    padding: 3px 6px;
+
+    font-size: 14px;
+}
+
+@media (hover: hover) and (pointer: fine) {
+    .lang-button:hover {
+        border-color: var(--text);
+        color: var(--text);
+    }
+}

styles/components/mobile_menu_button.css

@@ -0,0 +1,72 @@
+.button-mobile.no-navbar {
+    display: inline-block;
+}
+
+/* Hidden together with the mobile bar (mobile_bar.css) on large screens */
+@media (min-width: 1001px) and (min-height: 701px) {
+    .button-mobile.no-navbar {
+        display: none;
+    }
+}
+
+.button-mobile {
+    position: relative;
+    width: 40px;
+    height: 40px;
+    background: var(--surface);
+    border: none;
+    margin-top: 20px;
+    cursor: pointer;
+    border: 1px solid var(--border);
+}
+
+.button-mobile.navbar {
+    margin-bottom: 20px;
+}
+
+.button-mobile::before {
+    content: "";
+    position: absolute;
+    left: 50%;
+    top: 30%;
+    background: var(--muted);
+    height: 2px;
+    width: 60%;
+    transform: translateX(-50%);
+}
+
+.button-mobile::after {
+    content: "";
+    position: absolute;
+    left: 50%;
+    top: 65%;
+    background: var(--muted);
+    height: 2px;
+    width: 60%;
+    transform: translateX(-50%);
+}
+
+.button-mobile:hover::after {
+    background: var(--text);
+}
+
+.button-mobile:hover::before {
+    background: var(--text);
+}
+
+.button-mobile:hover {
+    width: 40px;
+    height: 40px;
+    background: var(--bg2);
+}
+
+.button-mobile.no-navbar {
+    position: fixed;
+    top: 5px;
+    left: 5px;
+    margin-top: 0;
+}
+
+.button-mobile.no-navbar.inactive {
+    display: none;
+}

styles/components/tags.css

@@ -0,0 +1,18 @@
+.tags {
+    margin-top: 30px;
+    display: flex;
+    gap: 6px;
+    flex-wrap: wrap;
+}
+
+.tag {
+    color: var(--muted);
+    background: var(--surface);
+    border: 1px solid var(--border);
+    padding: 3px 10px;
+    border-radius: 3px;
+    font-size: 15px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}

styles/components/text_link.css

@@ -0,0 +1,33 @@
+.text-link:hover {
+    border-color: var(--text);
+}
+
+.text-link {
+    display: inline-block;
+    width: fit-content;
+    font-size: var(--text-size);
+    font-weight: bolder;
+    text-decoration: none;
+    transition: border-color 0.15s;
+    white-space: nowrap;
+    position: relative;
+}
+
+.text-link:hover {
+    color: var(--text);
+}
+
+.text-link::before {
+    content: "";
+    width: 100%;
+    height: 1.2px;
+    background: var(--muted);
+    left: 0;
+    bottom: 2px;
+    position: absolute;
+    border-radius: 16px;
+}
+
+.text-link:hover::before {
+    background: var(--text);
+}

styles/components/theme_switch.css

@@ -0,0 +1,57 @@
+/* Color Switch */
+
+.switch {
+    user-select: none;
+    position: relative;
+    display: inline-block;
+    width: 52px;
+    height: 28px;
+}
+
+.switch input {
+    opacity: 0;
+    width: 0;
+    height: 0;
+}
+
+.slider {
+    position: absolute;
+    cursor: pointer;
+    top: 0;
+    left: 0;
+    right: 0;
+    bottom: 0;
+    background-color: var(--surface);
+    border-radius: 26px;
+    border: 1px solid var(--border);
+}
+
+@media (hover: hover) and (pointer: fine) {
+    .slider:hover {
+        border: 1px solid var(--text);
+    }
+}
+
+.slider:before {
+    position: absolute;
+    content: "";
+    height: 20px;
+    width: 20px;
+    left: 3px;
+    bottom: 3px;
+    background-color: var(--muted);
+    transition: 0.4s;
+    border-radius: 50%;
+}
+
+input:checked+.slider:before {
+    background-color: var(--bg);
+}
+
+input:checked+.slider {
+    background-color: var(--surface);
+}
+
+input:checked+.slider:before {
+    transform: translateX(24px);
+}

styles/layout/main_content.css

@@ -0,0 +1,19 @@
+.main-content {
+    margin-left: var(--nav-w);
+    --margin-main-content: 7vw;
+    --margin-top: 100px;
+}
+
+@media (max-width: 1500px) {
+    .main-content {
+        --margin-main-content: 4vw;
+    }
+}
+
+@media (max-width: 1000px) or (max-height: 700px) {
+    .main-content {
+        margin-left: 0;
+        --margin-main-content: 20px;
+        --margin-top: 50px;
+    }
+}

styles/layout/mobile_bar.css

@@ -30,18 +30,11 @@
     left: calc(var(--nav-mobile-w) * (-1))
 }
 
-.button-mobile.no-navbar {
-    display: inline-block;
-}
-
+/* Hidden together with the menu button (mobile_menu_button.css) on large screens */
 @media (min-width: 1001px) and (min-height: 701px) {
     #navbar-mobile {
         display: none;
     }
-
-    .button-mobile.no-navbar {
-        display: none;
-    }
 }
 
 #navbar-mobile-links {
@@ -54,68 +47,6 @@
     height: fit-content;
 }
 
-.button-mobile {
-    position: relative;
-    width: 40px;
-    height: 40px;
-    background: var(--surface);
-    border: none;
-    margin-top: 20px;
-    cursor: pointer;
-    border: 1px solid var(--border);
-}
-
-.button-mobile.navbar {
-    margin-bottom: 20px;
-}
-
-.button-mobile::before {
-    content: "";
-    position: absolute;
-    left: 50%;
-    top: 30%;
-    background: var(--muted);
-    height: 2px;
-    width: 60%;
-    transform: translateX(-50%);
-}
-
-.button-mobile::after {
-    content: "";
-    position: absolute;
-    left: 50%;
-    top: 65%;
-    background: var(--muted);
-    height: 2px;
-    width: 60%;
-    transform: translateX(-50%);
-}
-
-.button-mobile:hover::after {
-    background: var(--text);
-}
-
-.button-mobile:hover::before {
-    background: var(--text);
-}
-
-.button-mobile:hover {
-    width: 40px;
-    height: 40px;
-    background: var(--bg2);
-}
-
-.button-mobile.no-navbar {
-    position: fixed;
-    top: 5px;
-    left: 5px;
-    margin-top: 0;
-}
-
-.button-mobile.no-navbar.inactive {
-    display: none;
-}
-
 .navbar-item-mobile {
     width: 100%;
     height: 8vh;

styles/layout/navbar.css

@@ -0,0 +1,62 @@
+/* Navbar */
+
+#navbar {
+    list-style: none;
+    display: flex;
+    flex-direction: column;
+    padding: var(--padding);
+}
+
+.navbar-group {
+    margin-top: 25px;
+    margin-bottom: 5px;
+    font-size: calc(var(--font-size) + 0.1rem);
+    font-family: var(--serif);
+}
+
+.navbar-item {
+    -webkit-user-select: none;
+    -ms-user-select: none;
+    user-select: none;
+    position: relative;
+    font-weight: normal;
+    margin: 5px 0px 5px 0px;
+    user-select: none;
+}
+
+.nav-link {
+    font-size: 0.75rem;
+}
+
+@media (hover: hover) and (pointer: fine) {
+    .nav-link:hover {
+        color: var(--text);
+    }
+}
+
+.nav-link.active {
+    color: var(--text);
+    font-weight: bold;
+}
+
+.nav-link::before {
+    content: "";
+    position: absolute;
+    background: var(--text);
+    width: 2px;
+    height: 0px;
+    top: 50%;
+    transform: translateY(-50%);
+    left: calc(var(--padding) * (-1) + 1px);
+    border-radius: 20px;
+    transition: height 0.18s;
+}
+
+.nav-link.active::before {
+    height: 14px;
+}
+
+.idx {
+    font-weight: normal;
+    font-size: 0.75rem;
+}

styles/layout/sidebar.css

@@ -0,0 +1,89 @@
+.sidebar {
+    position: fixed;
+    top: 0;
+    left: 0;
+    border-right: 1px solid var(--border);
+    width: var(--nav-w);
+    height: 100vh;
+    padding: 0;
+    margin: 0;
+    display: flex;
+    flex-direction: column;
+    background-color: var(--bg);
+
+    --padding: 30px;
+}
+
+@media (max-width: 1000px) or (max-height: 700px) {
+    .sidebar {
+        display: none;
+    }
+}
+
+/* Sidebar Top */
+
+#sidebar-top {
+    border-bottom: 1px solid var(--border);
+    padding: var(--padding);
+    padding-top: calc(var(--padding) * 2);
+    display: flex;
+    flex-direction: column;
+    gap: 20px;
+}
+
+#sidebar-top-head {
+    padding: 0;
+    margin: 0;
+}
+
+#sidebar-top-content {
+    padding: 0;
+    margin: 0;
+    display: flex;
+    flex-direction: column;
+    gap: 0px;
+}
+
+#sidebar-top-content p {
+    font-size: calc(var(--font-size) - 0.15rem);
+    margin: 0;
+    padding: 0;
+    height: fit-content;
+    width: fit-content;
+}
+
+/* Sidebar Bottom */
+
+.sidebar-bottom-margin {
+    margin-top: auto;
+}
+
+/* Language and Color */
+
+.website-config {
+    height: fit-content;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    border-bottom: 1px solid var(--border);
+    padding-bottom: 20px;
+    gap: 20px;
+    -webkit-user-select: none;
+    -ms-user-select: none;
+    user-select: none;
+}
+
+/* Contact */
+
+#sidebar-bottom {
+    height: 100px;
+    padding: calc(var(--padding) / 2);
+    display: flex;
+    flex-direction: column;
+    justify-content: space-evenly;
+    align-items: flex-start;
+}
+
+#sidebar-bottom a {
+    font-size: calc(var(--font-size) - 0.15rem);
+}

styles/main.css

@@ -0,0 +1,27 @@
+/* Entry point. Order matters: later rules win at equal specificity. */
+
+/* Base */
+@import "base/variables.css";
+@import "base/base.css";
+
+/* Layout */
+@import "layout/sidebar.css";
+@import "layout/navbar.css";
+@import "layout/mobile_bar.css";
+@import "layout/main_content.css";
+
+/* Components */
+@import "components/theme_switch.css";
+@import "components/lang_dropdown.css";
+@import "components/mobile_menu_button.css";
+@import "components/tags.css";
+@import "components/text_link.css";
+
+/* Sections */
+@import "sections/introduction.css";
+@import "sections/section_header.css";
+@import "sections/project_blocks.css";
+@import "sections/work.css";
+
+/* Utilities */
+@import "base/utilities.css";

styles/main_style.css

@@ -1,57 +0,0 @@
-:root {
-    --bg: #5E4C93;
-    --bg2: #1b162a;
-    --text: #FFFFFF;
-    --surface: #3e3261;
-    --muted: #C5C1D1;
-    --border: #20192a;
-    --serif: Georgia, serif;
-    --sans: system-ui, sans-serif;
-    --nav-w: 230px;
-    --nav-mobile-w: min(60vw, 400px);
-    --font-size: 1rem;
-}
-
-.dark {
-    --bg: #130e21;
-    --bg2: #090710;
-    --text: #FFFFFF;
-    --surface: #3e3261;
-    --muted: #C5C1D1;
-    --border: #726684;
-}
-
-html {
-    scroll-behavior: smooth;
-}
-
-body {
-    background: linear-gradient(135deg, var(--bg), var(--bg2));
-    margin: 0;
-}
-
-p,
-span,
-li,
-a {
-    color: var(--muted);
-    line-height: 1.7;
-    font-size: var(--font-size);
-    font-family: var(--sans);
-}
-
-h1,
-h2,
-h3 {
-    color: var(--text);
-    font-family: var(--serif);
-}
-
-a {
-
-    text-decoration: none;
-}
-
-* {
-    box-sizing: border-box;
-}

styles/projects_style.css

@@ -1,168 +0,0 @@
-.main-content {
-    margin-left: var(--nav-w);
-    --margin-main-content: 7vw;
-    --margin-top: 100px;
-}
-
-@media (max-width: 1500px) {
-    .main-content {
-        --margin-main-content: 4vw;
-    }
-}
-
-@media (max-width: 1000px) or (max-height: 700px) {
-    .main-content {
-        margin-left: 0;
-        --margin-main-content: 20px;
-        --margin-top: 50px;
-    }
-}
-
-#introduction {
-    margin-top: var(--margin-top);
-    margin-left: var(--margin-main-content);
-    margin-bottom: 60px;
-    margin-right: var(--margin-main-content);
-}
-
-#introduction p {
-    color: var(--text);
-}
-
-.text-link.introduction {
-    margin-top: 20px;
-}
-
-.project-section {
-    border-top: 1px solid var(--border);
-}
-
-.content-block {
-    height: 600px;
-    display: grid;
-    grid-template-columns: 1fr 1fr;
-    overflow: hidden;
-    margin-top: -1px;
-}
-
-.section-header {
-    margin: 80px;
-    margin-left: var(--margin-main-content);
-    margin-right: var(--margin-main-content);
-}
-
-.tags {
-    margin-top: 30px;
-    display: flex;
-    gap: 6px;
-    flex-wrap: wrap;
-}
-
-.tag {
-    color: var(--muted);
-    background: var(--surface);
-    border: 1px solid var(--border);
-    padding: 3px 10px;
-    border-radius: 3px;
-    font-size: 15px;
-    display: flex;
-    align-items: center;
-    justify-content: center;
-}
-
-.block-image {
-    overflow: hidden;
-    border-top: 1px solid var(--border);
-    border-bottom: 1px solid var(--border);
-    display: flex;
-}
-
-.block-image.right {
-    margin-right: var(--margin-main-content);
-    border-left: 1px solid var(--border);
-    justify-content: left;
-    margin-left: -0.5px;
-}
-
-.block-image.left {
-    margin-left: var(--margin-main-content);
-    border-right: 1px solid var(--border);
-    justify-content: right;
-    margin-right: -0.5px;
-}
-
-.block-image img {
-    height: 100%;
-    width: 100%;
-    max-width: 700px;
-    max-height: 700px;
-    object-fit: cover;
-}
-
-.block-image img.left {
-    object-position: left;
-}
-
-.block-image img.center {
-    object-position: center;
-}
-
-.block-image img.right {
-    object-position: right;
-}
-
-.block-text {
-    display: flex;
-    flex-direction: column;
-    justify-content: center;
-    overflow: hidden;
-    margin-right: var(--margin-main-content);
-    padding-left: var(--margin-main-content);
-}
-
-.text-content {
-    display: inline;
-}
-
-.text-link:hover {
-    border-color: var(--text);
-}
-
-.text-link {
-    display: inline-block;
-    width: fit-content;
-    font-size: var(--text-size);
-    font-weight: bolder;
-    text-decoration: none;
-    transition: border-color 0.15s;
-    white-space: nowrap;
-    position: relative;
-}
-
-.text-link:hover {
-    color: var(--text);
-}
-
-.text-link::before {
-    content: "";
-    width: 100%;
-    height: 1.2px;
-    background: var(--muted);
-    left: 0;
-    bottom: 2px;
-    position: absolute;
-    border-radius: 16px;
-}
-
-.text-link:hover::before {
-    background: var(--text);
-}
-
-.link-row {
-    margin: var(--margin-main-content);
-    margin-top: 30px;
-}
-
-.hidden {
-    display: none;
-}

styles/sections/introduction.css

@@ -0,0 +1,14 @@
+#introduction {
+    margin-top: var(--margin-top);
+    margin-left: var(--margin-main-content);
+    margin-bottom: 60px;
+    margin-right: var(--margin-main-content);
+}
+
+#introduction p {
+    color: var(--text);
+}
+
+.text-link.introduction {
+    margin-top: 20px;
+}

styles/sections/project_blocks.css

@@ -0,0 +1,66 @@
+.content-block {
+    height: 600px;
+    display: grid;
+    grid-template-columns: 1fr 1fr;
+    overflow: hidden;
+    margin-top: -1px;
+}
+
+.block-image {
+    overflow: hidden;
+    border-top: 1px solid var(--border);
+    border-bottom: 1px solid var(--border);
+    display: flex;
+}
+
+.block-image.right {
+    margin-right: var(--margin-main-content);
+    border-left: 1px solid var(--border);
+    justify-content: left;
+    margin-left: -0.5px;
+}
+
+.block-image.left {
+    margin-left: var(--margin-main-content);
+    border-right: 1px solid var(--border);
+    justify-content: right;
+    margin-right: -0.5px;
+}
+
+.block-image img {
+    height: 100%;
+    width: 100%;
+    max-width: 700px;
+    max-height: 700px;
+    object-fit: cover;
+}
+
+.block-image img.left {
+    object-position: left;
+}
+
+.block-image img.center {
+    object-position: center;
+}
+
+.block-image img.right {
+    object-position: right;
+}
+
+.block-text {
+    display: flex;
+    flex-direction: column;
+    justify-content: center;
+    overflow: hidden;
+    margin-right: var(--margin-main-content);
+    padding-left: var(--margin-main-content);
+}
+
+.text-content {
+    display: inline;
+}
+
+.link-row {
+    margin: var(--margin-main-content);
+    margin-top: 30px;
+}

styles/sections/section_header.css

@@ -0,0 +1,9 @@
+.project-section {
+    border-top: 1px solid var(--border);
+}
+
+.section-header {
+    margin: 80px;
+    margin-left: var(--margin-main-content);
+    margin-right: var(--margin-main-content);
+}

styles/sections/work.css

@@ -0,0 +1,60 @@
+/* Work / career sections.
+   DOM (see scripts/sections/work.js):
+   .section-header > h1 + p.section-desc (role) + p.section-desc (dates, company) + .tags
+   .tasks-div > .task-div > span.task-title + span.task-content */
+
+/* Header: tighter than the project headers, since the tasks follow directly */
+
+.section-header:has(+ .tasks-div) {
+    margin-bottom: 40px;
+}
+
+.section-header:has(+ .tasks-div) .section-desc {
+    margin: 0;
+}
+
+.section-header:has(+ .tasks-div) .section-desc:first-of-type {
+    margin-top: 12px;
+    color: var(--text);
+    font-size: calc(var(--font-size) + 0.1rem);
+}
+
+.section-header:has(+ .tasks-div) .section-desc + .section-desc {
+    margin-top: 4px;
+    font-size: calc(var(--font-size) - 0.05rem);
+}
+
+.section-header:has(+ .tasks-div) .tags {
+    margin-top: 24px;
+}
+
+/* Tasks */
+
+.tasks-div {
+    display: flex;
+    flex-direction: column;
+    gap: 28px;
+    max-width: 75ch;
+    margin: 0 var(--margin-main-content) 100px;
+}
+
+.task-div {
+    padding-left: 20px;
+    border-left: 2px solid var(--border);
+    transition: border-color 0.18s;
+}
+
+@media (hover: hover) and (pointer: fine) {
+    .task-div:hover {
+        border-color: var(--text);
+    }
+}
+
+.task-title {
+    color: var(--text);
+    font-weight: 700;
+}
+
+.task-content {
+    color: var(--muted);
+}

styles/sidebar_style.css

@@ -1,284 +0,0 @@
-.sidebar {
-    position: fixed;
-    top: 0;
-    left: 0;
-    border-right: 1px solid var(--border);
-    width: var(--nav-w);
-    height: 100vh;
-    padding: 0;
-    margin: 0;
-    display: flex;
-    flex-direction: column;
-    background-color: var(--bg);
-
-    --padding: 30px;
-}
-
-@media (max-width: 1000px) or (max-height: 700px) {
-    .sidebar {
-        display: none;
-    }
-}
-
-/* Sidebar Top */
-
-#sidebar-top {
-    border-bottom: 1px solid var(--border);
-    padding: var(--padding);
-    padding-top: calc(var(--padding) * 2);
-    display: flex;
-    flex-direction: column;
-    gap: 20px;
-}
-
-#sidebar-top-head {
-    padding: 0;
-    margin: 0;
-}
-
-#sidebar-top-content {
-    padding: 0;
-    margin: 0;
-    display: flex;
-    flex-direction: column;
-    gap: 0px;
-}
-
-#sidebar-top-content p {
-    font-size: calc(var(--font-size) - 0.15rem);
-    margin: 0;
-    padding: 0;
-    height: fit-content;
-    width: fit-content;
-}
-
-/* Navbar */
-
-#navbar {
-    list-style: none;
-    display: flex;
-    flex-direction: column;
-    padding: var(--padding);
-}
-
-.navbar-group {
-    margin-top: 15px;
-    margin-bottom: 5px;
-    font-size: calc(var(--font-size) + 0.1rem);
-    font-family: var(--serif);
-}
-
-.navbar-item {
-    -webkit-user-select: none;
-    -ms-user-select: none;
-    user-select: none;
-    position: relative;
-    font-weight: normal;
-    margin: 5px 0px 5px 0px;
-    user-select: none;
-}
-
-.nav-link {
-    font-size: 0.75rem;
-}
-
-@media (hover: hover) and (pointer: fine) {
-    .nav-link:hover {
-        color: var(--text);
-    }
-}
-
-.nav-link.active {
-    color: var(--text);
-    font-weight: bold;
-}
-
-.nav-link::before {
-    content: "";
-    position: absolute;
-    background: var(--text);
-    width: 2px;
-    height: 0px;
-    top: 50%;
-    transform: translateY(-50%);
-    left: calc(var(--padding) * (-1) + 1px);
-    border-radius: 20px;
-    transition: height 0.18s;
-}
-
-.nav-link.active::before {
-    height: 14px;
-}
-
-.idx {
-    font-weight: normal;
-    font-size: 0.75rem;
-}
-
-/* Sidebar Bottom */
-
-.sidebar-bottom-margin {
-    margin-top: auto;
-}
-
-/* Language and Color */
-
-.website-config {
-    height: fit-content;
-    display: flex;
-    align-items: center;
-    justify-content: center;
-    border-bottom: 1px solid var(--border);
-    padding-bottom: 20px;
-    gap: 20px;
-    -webkit-user-select: none;
-    -ms-user-select: none;
-    user-select: none;
-}
-
-/* Color Switch */
-
-.switch {
-    user-select: none;
-    position: relative;
-    display: inline-block;
-    width: 52px;
-    height: 28px;
-}
-
-.switch input {
-    opacity: 0;
-    width: 0;
-    height: 0;
-}
-
-.slider {
-    position: absolute;
-    cursor: pointer;
-    top: 0;
-    left: 0;
-    right: 0;
-    bottom: 0;
-    background-color: var(--surface);
-    border-radius: 26px;
-    border: 1px solid var(--border);
-}
-
-@media (hover: hover) and (pointer: fine) {
-    .slider:hover {
-        border: 1px solid var(--text);
-    }
-}
-
-.slider:before {
-    position: absolute;
-    content: "";
-    height: 20px;
-    width: 20px;
-    left: 3px;
-    bottom: 3px;
-    background-color: var(--muted);
-    transition: 0.4s;
-    border-radius: 50%;
-}
-
-input:checked+.slider:before {
-    background-color: var(--bg);
-}
-
-input:checked+.slider {
-    background-color: var(--surface);
-}
-
-input:checked+.slider:before {
-    transform: translateX(24px);
-}
-
-/* Language Dropdown*/
-
-.lang-dropdown {
-    user-select: none;
-    display: flex;
-    gap: 3px;
-    width: 91px;
-    height: 40px;
-    display: flex;
-    justify-content: center;
-    align-items: center;
-    border: none;
-    background: none;
-    -webkit-user-select: none;
-    -ms-user-select: none;
-    user-select: none;
-}
-
-.lang-dropdown.show-border {
-    border: 1px solid var(--border);
-    border-radius: 8px;
-    background: var(--bg2);
-}
-
-.lang-menu {
-    display: flex;
-    align-items: center;
-    gap: 3px;
-}
-
-.lang-item {
-    cursor: pointer;
-    background-color: var(--surface);
-    width: 40px;
-    height: 24px;
-    display: flex;
-    align-items: center;
-    justify-content: center;
-    border: 1px solid var(--border);
-    border-radius: 8px;
-    color: var(--muted);
-}
-
-@media (hover: hover) and (pointer: fine) {
-    .lang-item:hover {
-        border-color: var(--text);
-        color: var(--text);
-    }
-}
-
-.lang-button {
-    width: 40px;
-    height: 30px;
-    appearance: none;
-    -webkit-appearance: none;
-    -moz-appearance: none;
-
-    cursor: pointer;
-    background-color: var(--surface);
-    color: var(--muted);
-    border-radius: 8px;
-    border: 1px solid var(--border);
-    padding: 3px 6px;
-
-    font-size: 14px;
-}
-
-@media (hover: hover) and (pointer: fine) {
-    .lang-button:hover {
-        border-color: var(--text);
-        color: var(--text);
-    }
-}
-
-/* Contact */
-
-#sidebar-bottom {
-    height: 100px;
-    padding: calc(var(--padding) / 2);
-    display: flex;
-    flex-direction: column;
-    justify-content: space-evenly;
-    align-items: flex-start;
-}
-
-#sidebar-bottom a {
-    font-size: calc(var(--font-size) - 0.15rem);
-}