[2.0.2] feat: Add BibTeX syntax highlighting and polish mobile UX

Before: BibTeX citations were monochrome text blobs in both the
article cite panel and the footer. Switching formats hard-swapped
with no transition. The nav search button did nothing on mobile.
The floating filter FAB covered the footer citation block on
short scrolls.

After: BibTeX entries get colored syntax — types, keys, delimiters
each get their own class — shared through a single formatBibtexHtml
function so article and footer rendering never drift. Format
switching crossfades. Copy tooltip confirms which format was grabbed
("BibTeX copied" / "APA copied").

On mobile, the nav search button closes the hamburger menu (if open)
and opens the filter bottom sheet with the search input focused.
Keyboard shortcut / does the same via open-mobile-search custom
event. The filter FAB fades out when the footer enters the viewport
via IntersectionObserver. Engagement bar groups Share + Cite in a
centered row instead of stacking everything vertically with full-
width separators. Share dropdown centers itself within viewport
bounds instead of overflowing off-screen.

Also:

- Fix article content overflow on narrow viewports (min-width: 0)
- CatalogHero trust badge: text-wrap balance, span wrapper to
  prevent icon reflowing into wrapped text
- BrowseNav wraps on small screens, dots hidden
- Footer copyright name links to author profile
- Feedback follow-up animates with opacity instead of display toggle
- Extract shared E2E helpers to tests/e2e/helpers.ts
- Fix webkit test failures in 404 suggestion link navigation
- Fix analytics-consent race condition: await astro:page-load
- Mark axe-core a11y tests as test.slow() to stop CI flakes
- Add CHANGELOG entry for 2.0.2

Author: Luzkan

docs/CHANGELOG.md

@@ -6,38 +6,69 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ---
 
-## [`2.0.1`] - 2026-03-29
+## [`2.0.2`] - 2026-03-30
+
+**Citations look like they belong in a paper now, and mobile stopped pretending it's desktop.** BibTeX gets syntax highlighting everywhere it appears, the search button actually works on phones, and a handful of layout rough edges got sanded down.
+
+### Added
+
+- **BibTeX syntax highlighting** - entry types, field names, and delimiters get distinct colors in both the article cite panel and footer citation block. Shared via `formatBibtexHtml` in `src/lib/citation.ts` so the two never drift.
+- **Citation format crossfade** - switching between BibTeX / APA / Markdown fades the content out and back in instead of hard-swapping. Copy button tooltip confirms which format was copied.
+- **Mobile search integration** - the nav search button now opens the filter bottom sheet with the search input focused (dispatches `open-mobile-search` event). Keyboard shortcut `/` does the same. Closes the mobile nav first if it's open.
+- **Mobile FAB auto-hide** - the floating "Filters" button fades out when the footer scrolls into view, so it stops covering the citation block on short pages
+- **E2E test helpers module** - `isMobileProject`, `waitForNextAstroPageLoad`, `setTheme`, `trackConsoleErrors` extracted to `tests/e2e/helpers.ts` and shared across specs
+
+### Changed
+
+- Engagement bar stacks cleanly on mobile: Share + Cite stay grouped in a row, feedback sits above, separators hidden
+- Share dropdown centers itself on mobile viewports instead of overflowing off-screen
+- Feedback follow-up text animates in with opacity transition instead of a `display: none` toggle
+- CatalogHero trust badge uses `text-wrap: balance` and wraps the text in a `<span>` so the book icon doesn't reflow into the second line
+- BrowseNav wraps gracefully on small screens (dots hidden)
+- Footer copyright name now links to author profile
+- Accessibility axe-core tests marked `test.slow()` to stop flaking under load
+
+### Fixed
+
+- Article content overflowing its container on narrow viewports (`min-width: 0` on the content column)
+- 404 suggestion link navigation failing in webkit - uses `force: true` click with parallel `waitForURL`
+- Analytics consent test race condition on Astro navigation - now awaits `astro:page-load` event before asserting page view count
+- Console error filtering in 404 tests - expected 404 resource errors no longer pollute the error list
+
+---
+
+## [`2.0.1`] - 2026-03-30
 
 **Users can now quiet animations without touching their OS settings.** A sparkles toggle in the nav gives per-site control, persisted across sessions.
 
 ### Added
 
-- **Animation toggle** — sparkles button in the nav lets users reduce motion on this site alone. Bounces when sparkles come back to life; goes instantly quiet when they don't.
-- **Tooltip system** for nav icon buttons — CSS-only `data-tooltip` with arrow, hover delay, and keyboard focus support, replacing native `title` attributes
-- **Motion contract** (`motion-contract.ts`) — shared constants and types mirroring the theme system architecture
-- **Motion preference blocking script** — resolves `html[data-motion]` before first paint (localStorage first, OS `prefers-reduced-motion` as fallback), stamps new documents on view transitions
+- **Animation toggle** - sparkles button in the nav lets users reduce motion on this site alone. Bounces when sparkles come back to life; goes instantly quiet when they don't.
+- **Tooltip system** for nav icon buttons - CSS-only `data-tooltip` with arrow, hover delay, and keyboard focus support, replacing native `title` attributes
+- **Motion contract** (`motion-contract.ts`) - shared constants and types mirroring the theme system architecture
+- **Motion preference blocking script** - resolves `html[data-motion]` before first paint (localStorage first, OS `prefers-reduced-motion` as fallback), stamps new documents on view transitions
 
 ### Changed
 
-- Motion system rewired from fifteen independent `@media (prefers-reduced-motion)` blocks to one `html[data-motion]` attribute driving a global CSS kill switch — near-zero durations on all transitions, animations, and view transitions when reduced
+- Motion system rewired from fifteen independent `@media (prefers-reduced-motion)` blocks to one `html[data-motion]` attribute driving a global CSS kill switch - near-zero durations on all transitions, animations, and view transitions when reduced
 - Mobile nav hardened against view-transition DOM replacement: lazy element lookups, re-bound listeners on `astro:page-load`, duplicate-event guards via data attributes
 - E2E test helpers extracted for consent flow, catalog filter scoping, and stable click-with-scroll patterns; clipboard tests skip non-Chromium; force-click fallbacks for mobile viewports
 
 ### Fixed
 
-- Horizontal overflow from `left: -100vw; right: -100vw` on full-bleed decorative backgrounds in CatalogHero and ArticleLayout — replaced with `translateX(-50%)` centering
-- ThemeToggle spin animation clipping tooltip pseudo-elements — now targets inner icons instead of the button, `overflow: hidden` dropped
+- Horizontal overflow from `left: -100vw; right: -100vw` on full-bleed decorative backgrounds in CatalogHero and ArticleLayout - replaced with `translateX(-50%)` centering
+- ThemeToggle spin animation clipping tooltip pseudo-elements - now targets inner icons instead of the button, `overflow: hidden` dropped
 
 ---
 
 ## [`2.0.0`] - 2026-03-23
 
-**Complete rewrite — Gatsby → Astro 5.** New architecture, new design, same 56 smells.
+**Complete rewrite - Gatsby → Astro 5.** New architecture, new design, same 56 smells.
 
 ### Architecture
 
 - Migrated from Gatsby (React, Material UI) to **Astro 5** with static output
-- Adopted **Preact islands** for interactive components (FilterSidebar, CodeExample) — most pages ship zero framework JS
+- Adopted **Preact islands** for interactive components (FilterSidebar, CodeExample) - most pages ship zero framework JS
 - Replaced client-side state with **Nano Stores** (shared between islands and vanilla scripts)
 - Switched styling from Material UI to **Tailwind CSS v4** (via `@tailwindcss/vite`)
 - Self-hosted fonts via **Fontsource** (Fraunces, Plus Jakarta Sans, JetBrains Mono)
@@ -351,6 +382,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 [`1.0.20`]: https://github.com/Luzkan/smells/releases/tag/1.0.20
 [`1.0.21`]: https://github.com/Luzkan/smells/releases/tag/1.0.21
 [`1.0.22`]: https://github.com/Luzkan/smells/releases/tag/1.0.22
+[`2.0.2`]: https://github.com/Luzkan/smells/releases/tag/2.0.2
 [`2.0.1`]: https://github.com/Luzkan/smells/releases/tag/2.0.1
 [`2.0.0`]: https://github.com/Luzkan/smells/releases/tag/2.0.0
 [`1.0.23-alpha.1`]: https://github.com/Luzkan/smells/releases/tag/1.0.23-alpha.1

src/components/article/EngagementBar.astro

@@ -15,9 +15,11 @@ const { citation } = Astro.props;
 <div class="engagement-bar">
   <FeedbackButton slug={citation.slug} />
   <span class="engage-sep"></span>
-  <ShareButton slug={citation.slug} />
-  <span class="engage-sep"></span>
-  <CiteToggle />
+  <div class="engage-actions">
+    <ShareButton slug={citation.slug} />
+    <span class="engage-sep"></span>
+    <CiteToggle />
+  </div>
 </div>
 <CitePanel citation={citation} />
 
@@ -34,6 +36,10 @@ const { citation } = Astro.props;
     margin-bottom: 0;
   }
 
+  .engage-actions {
+    display: contents;
+  }
+
   .engage-sep {
     width: 1px;
     height: 24px;
@@ -71,13 +77,21 @@ const { citation } = Astro.props;
   @media (max-width: 640px) {
     .engagement-bar {
       flex-direction: column;
+      align-items: center;
       padding: 16px 20px;
       gap: 12px;
+      margin-bottom: 16px;
+    }
+
+    .engage-actions {
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      gap: 12px;
     }
 
     .engage-sep {
-      width: 100%;
-      height: 1px;
+      display: none;
     }
   }
 </style>

src/components/catalog/BrowseNav.astro

@@ -156,5 +156,19 @@ const { totalSmells, allSlugs, currentSlug } = Astro.props;
     }
   }
 
+  @media (max-width: 640px) {
+    .browse-nav {
+      flex-wrap: wrap;
+    }
+
+    .browse-nav__all {
+      padding: 8px 18px;
+    }
+
+    .browse-nav__dot {
+      display: none;
+    }
+  }
+
   /* diceShake keyframes defined globally in global.css */
 </style>

src/components/catalog/CatalogHero.astro

@@ -45,7 +45,8 @@ const { totalCount, categoryCount, hierarchyCount } = Astro.props;
   {/* HERO-05: Springer Nature trust badge */}
   <a class="catalog-hero__trust" href={SPRINGER_PAPER_URL} target="_blank" rel="noopener">
     <BookIcon class="catalog-hero__trust-icon" size={14} strokeWidth={2} />
-    Companion to peer-reviewed research published by <strong>Springer Nature</strong>
+    {/* Wrapper <span> prevents the icon from reflowing into wrapped text on small screens */}
+    <span>Companion to peer-reviewed research published by <strong>Springer Nature</strong></span>
   </a>
 </section>
 
@@ -190,6 +191,7 @@ const { totalCount, categoryCount, hierarchyCount } = Astro.props;
     background: var(--surface);
     transition: all 0.25s var(--ease-smooth);
     text-decoration: none;
+    text-wrap: balance;
   }
 
   .catalog-hero__trust:hover {

src/components/engagement/CitePanel.astro

@@ -7,10 +7,13 @@ interface Props {
 import Icon from '../icons/Icon.astro';
 import { ICON_COPY } from '../../lib/icon-paths';
 import { SITE_URL } from '../../lib/constants';
+import { buildArticleBibtex, formatBibtexHtml } from '../../lib/citation';
 
 const { citation } = Astro.props;
 const { slug, title, author, year } = citation;
 const url = `${SITE_URL}/smells/${slug}`;
+const bibtexRaw = buildArticleBibtex(slug, title, author, year, url);
+const bibtexHtml = formatBibtexHtml(bibtexRaw);
 ---
 
 <div class="cite-panel" id="cite-panel" data-slug={slug} aria-hidden="true" inert>
@@ -25,11 +28,11 @@ const url = `${SITE_URL}/smells/${slug}`;
     </div>
     <div class="cite-block">
       <pre
-        class="cite-block__code"
-        data-bibtex={`@misc{jerzyk${year}${slug.replace(/-/g, '')},\n  title  = {${title} — Code Smells Catalog},\n  author = {${author}},\n  year   = {${year}},\n  url    = {${url}}\n}`}
+        class="cite-bib-block"
+        data-bibtex={bibtexRaw}
+        data-bibtex-html={bibtexHtml}
         data-apa={`${author} (${year}). ${title} — Code Smells Catalog. ${url}`}
-        data-markdown={`[${title}](${url}) — *Code Smells Catalog* by ${author} (${year})`}>
-      </pre>
+        data-markdown={`[${title}](${url}) — *Code Smells Catalog* by ${author} (${year})`}><code class="cite-block__code" /></pre>
       <button class="cite-copy-btn" title="Copy citation" aria-label="Copy citation">
         <Icon icon={ICON_COPY} size={12} />
       </button>
@@ -39,7 +42,7 @@ const url = `${SITE_URL}/smells/${slug}`;
 
 <script>
   import { trackEvent } from '../../lib/analytics/tracker';
-  import { copyToClipboardWithFeedback } from '../../lib/copy-code';
+  import { copyToClipboardWithFeedback, COPY_FEEDBACK_MS } from '../../lib/copy-code';
   import { initOnce } from '../../lib/lifecycle';
 
   function toCiteFormat(value: string | null): 'bibtex' | 'apa' | 'markdown' {
@@ -49,10 +52,24 @@ const url = `${SITE_URL}/smells/${slug}`;
 
   initOnce('.cite-panel', (citePanel) => {
     const slug = citePanel.getAttribute('data-slug') || '';
-    const citeBlock = citePanel.querySelector('.cite-block__code');
-    if (!(citeBlock instanceof HTMLElement)) return;
+    const citePre = citePanel.querySelector('.cite-bib-block');
+    const citeCodeEl = citePanel.querySelector('.cite-block__code');
+    if (!(citePre instanceof HTMLElement) || !(citeCodeEl instanceof HTMLElement)) return;
+
+    const pre = citePre;
+    const code = citeCodeEl;
+    let fadeRaf: number | null = null;
+    function crossfade(updateFn: () => void): void {
+      if (fadeRaf !== null) cancelAnimationFrame(fadeRaf);
+      code.classList.add('cite-block__code--fading');
+      fadeRaf = requestAnimationFrame(() => {
+        updateFn();
+        code.classList.remove('cite-block__code--fading');
+        fadeRaf = null;
+      });
+    }
 
-    citeBlock.textContent = citeBlock.getAttribute('data-bibtex') || '';
+    code.innerHTML = pre.getAttribute('data-bibtex-html') || '';
 
     const tabs = citePanel.querySelectorAll('.cite-tab');
     tabs.forEach((tab) => {
@@ -61,15 +78,21 @@ const url = `${SITE_URL}/smells/${slug}`;
         tabs.forEach((candidate) => candidate.classList.remove('cite-tab--active'));
         tab.classList.add('cite-tab--active');
         const format = toCiteFormat(tab.getAttribute('data-format'));
-        citeBlock.textContent = citeBlock.getAttribute(`data-${format}`) || '';
+        crossfade(() => {
+          if (format === 'bibtex') {
+            code.innerHTML = pre.getAttribute('data-bibtex-html') || '';
+          } else {
+            code.textContent = pre.getAttribute(`data-${format}`) || '';
+          }
+        });
       });
     });
 
     const copyButton = citePanel.querySelector('.cite-copy-btn');
     if (!(copyButton instanceof HTMLButtonElement)) return;
 
     copyButton.addEventListener('click', async () => {
-      const copied = await copyToClipboardWithFeedback(citeBlock.textContent || '', copyButton, {
+      const copied = await copyToClipboardWithFeedback(code.textContent || '', copyButton, {
         feedbackClass: 'cite-copy-btn--copied',
       });
       if (!copied) return;
@@ -78,6 +101,12 @@ const url = `${SITE_URL}/smells/${slug}`;
       const format = toCiteFormat(
         activeTab instanceof HTMLElement ? activeTab.getAttribute('data-format') : null,
       );
+      const formatLabel = format === 'bibtex' ? 'BibTeX' : format === 'apa' ? 'APA' : 'Markdown';
+      copyButton.title = `${formatLabel} copied`;
+      setTimeout(() => {
+        copyButton.title = 'Copy citation';
+      }, COPY_FEEDBACK_MS);
+
       trackEvent({ name: 'cite_copy', params: { format, smell: slug } });
     });
   });
@@ -156,19 +185,25 @@ const url = `${SITE_URL}/smells/${slug}`;
     padding: 14px 44px 14px 14px;
   }
 
-  .cite-block__code {
-    font-family: var(--font-mono);
-    font-size: 11px;
-    line-height: 1.55;
-    color: var(--text-secondary);
-    white-space: pre-wrap;
-    word-break: break-word;
-    margin: 0;
-    /* Override global <pre> styles: keep citation text on the white cite-block surface. */
+  .cite-bib-block {
     background: transparent;
     padding: 0;
     border-radius: 0;
     overflow: visible;
+    margin: 0;
+  }
+
+  .cite-block__code {
+    font-family: var(--font-mono);
+    font-size: 11px;
+    line-height: 1.7;
+    color: var(--text-secondary);
+    transition: opacity 0.15s ease;
+  }
+
+  .cite-block__code--fading {
+    opacity: 0;
+    transition: none;
   }
 
   .cite-copy-btn {

src/components/engagement/FeedbackButton.astro

@@ -138,6 +138,7 @@ const { slug } = Astro.props;
     gap: 10px;
     flex: 1;
     min-width: 0;
+    position: relative;
   }
 
   .engage-feedback__label {
@@ -184,10 +185,14 @@ const { slug } = Astro.props;
   }
 
   .engage-feedback__followup {
-    display: none;
+    display: inline-flex;
+    visibility: hidden;
+    opacity: 0;
+    position: absolute;
     font-size: var(--text-sm);
     font-weight: 500;
     color: var(--text-secondary);
+    transition: opacity 0.2s ease;
   }
 
   .engage-feedback__followup a {
@@ -210,7 +215,9 @@ const { slug } = Astro.props;
   }
 
   .engage-feedback.submitted .engage-feedback__followup.active {
-    display: inline-flex;
+    visibility: visible;
+    opacity: 1;
+    position: static;
   }
 
   @media (max-width: 640px) {

src/components/engagement/ShareButton.astro

@@ -240,8 +240,12 @@ const shareDropdownId = `share-dropdown-${slug}`;
 
   @media (max-width: 640px) {
     .share-dropdown {
-      bottom: auto;
-      top: calc(100% + 8px);
+      left: 50%;
+      transform: translateX(-50%) translateY(4px) scale(0.96);
+    }
+
+    .share-dropdown--open {
+      transform: translateX(-50%) translateY(0) scale(1);
     }
   }
 </style>

src/components/islands/FilterSidebar.css

@@ -562,6 +562,12 @@
   transition: all 0.25s var(--ease-spring);
 }
 
+.filter-sidebar__mobile-fab--hidden {
+  opacity: 0;
+  pointer-events: none;
+  transform: translateX(-50%) translateY(12px);
+}
+
 .filter-sidebar__mobile-fab:hover {
   transform: translateX(-50%) scale(1.04);
   box-shadow: var(--shadow-lg);