# Project Map — World Cup 2026 Hub
Navigation map of the codebase. Use this to find which file owns a concern before reading code.
> **Status 2026-06-12 (all 12 steps + real-data migration done):** everything works with **real World Cup 2026 data** — all views, bracket interactions, simulation, responsive/a11y pass, favorites, time toggle, challenge, share link, `.ics` export. Remaining: keep `results.json` current, fill `thirdPlaceAssignment` after the group stage (~Jun 27), Lighthouse run + GitHub Pages deploy. Spec source of truth: `world-cup-2026-hub-spec-en.md` + `complement-spec-worldcup2026-en.md` (complement **wins on conflict**).
---
## File tree
```
worldcup2026/
├── .agents/ ← Internal documentation for AI agents
│ ├── project-map.md This file
│ ├── project-memory.md Context, decisions, gotchas
│ ├── stats-screen-plan.md Plan for the post-tournament "final stats" screen
│ │ (NOT implemented — planning only, 2026-06-14)
│ └── TODO.md 12-step build checklist
│
├── .github/workflows/
│ └── deploy.yml CI: FTP deploy to Hostinger on push to master
│ (needs FTP_SERVER/USERNAME/PASSWORD secrets)
│ .gitignore OS/editor junk
│
├── index.html ★ SPA shell — header, nav tabs (Home, Matches,
│ Groups, Knockout, Stadiums, Stats), hero, dashboard,
│ modal container; loads app.js as ES module.
│ has the PWA block (manifest link, theme-color,
│ favicons, apple-mobile-web-app-* meta)
│
├── manifest.json PWA web app manifest (name/short_name, standalone,
│ theme/background #081421, icons[]) — relative paths
│ (start_url ".", scope "./") for the subpath deploy
│ favicon.ico Root favicon (16+32, from the trophy logo)
│
├── assets/
│ ├── css/
│ │ ├── style.css ★ Palette variables, glassmorphism base, layout,
│ │ │ components — mobile-first
│ │ ├── bracket.css Bracket columns, connectors, highlight states
│ │ ├── stats.css Stats tab: hero "pulse", overview cards, goals-by-stage chart
│ │ └── animations.css Entry (fade-in, slide-up/left) + interaction
│ │ (hover-scale/glow, pulse, line-draw)
│ ├── js/
│ │ ├── app.js ★ Entry point: loadData() (Promise.all over data/),
│ │ │ tab routing + lastTab (active-tab scroll-into-view +
│ │ │ edge fades on the scrollable nav), formatMatchTime(), dashboard,
│ │ │ clock-driven hero (matchState/findFeaturedMatches +
│ │ │ 1s heroTick: hybrid JSON+clock, 2h/3h window; stacks
│ │ │ simultaneous group-final matches, one shared timer),
│ │ │ live data refresh (startResultsPolling: 90s poll of
│ │ │ results.json, no-store + ?t, content signature, pauses
│ │ │ when tab hidden, stops at FINAL; on change also refetches
│ │ │ bracket-config.json; fires `datachange`)
│ │ ├── schedule.js Match list, filters (incl. occurrence toggle
│ │ │ Played/Upcoming via hybrid matchState), search,
│ │ │ sort, "My Matches"; 60s clock-tick re-render
│ │ ├── groups.js Standings computation (3/1/0, GD, GF) + group tables
│ │ ├── stadiums.js Stadium cards + "view matches" cross-link
│ │ ├── bracket.js ★ Bracket tree resolution, resolveBracketTeams(),
│ │ │ simulation, challenge score, share prediction
│ │ ├── modal.js Match detail modal (ARIA dialog)
│ │ ├── storage.js localStorage wrapper — wc2026_* keys, auto-JSON
│ │ ├── i18n.js EN/PT-BR dicts + t(key), lang toggle
│ │ ├── stats.js ★ Stats tab: tournament-to-date aggregates (finished
│ │ │ matches only), hero pulse + overview + goals-by-stage.
│ │ │ PARTIAL (during-cup) — grows into the post-cup plan.
│ │ └── calendar.js .ics export (RFC 5545, CRLF, Blob download)
│ ├── images/ Team flag SVGs, stadium placeholders
│ └── icons/ PWA app icons (from the header trophy logo): icon.svg
│ (master + manifest SVG), icon-192/512.png (purpose any),
│ icon-maskable-192/512.png (safe-zone padded),
│ apple-touch-icon.png (180), favicon-16/32.png, favicon.ico
│
├── data/ All content — REAL WC2026 data since 2026-06-12
│ ├── teams.json 48 real qualifiers: { id, name, flag } (FIFA codes)
│ ├── groups.json Official draw { "A": [4 team ids], ... } × 12 (A–L)
│ ├── matches.json 104 real fixtures; UTC times; ids 1–72 chronological
│ │ group games, 73–104 = FIFA match numbers (bracketRef)
│ ├── results.json { matchId, homeScore, awayScore, penalties?, status } —
│ │ update as the tournament progresses
│ ├── stadiums.json 16 real venues: { id, name, city, capacity, image, timezone }
│ └── bracket-config.json ★ official R32 structure + thirdPlaceAssignment (all null) —
│ the ONLY file to edit once real 3rd places are known
│ (slot → allowed-groups table in project-memory.md)
│
├── README.md Setup, GitHub Pages deploy, JSON maintenance guide
├── how-update.md Real-data migration runbook (mock → real — DONE 2026-06-12)
├── how-refresh-data.md ★ Daily refresh runbook during the tournament:
│ results.json scores/status + one-time
│ thirdPlaceAssignment; everything else frozen
├── world-cup-2026-hub-spec-en.md Main spec
└── complement-spec-worldcup2026-en.md Complement spec (precedence on conflict)
```
★ = critical files. Most changes touch one of them.
---
## Key flows
### 1. Data load → render
```
index.html (type="module")
└─ app.js: loadData() ── Promise.all ──> data/*.json
├─ hero + dashboard (app.js)
├─ schedule.js ──┐
├─ groups.js ├── render into tab panels
├─ bracket.js ──┘
└─ modal.js (on match click, from any view)
```
### 2. Bracket resolution
```
groups.json + results.json
└─ groups.js: standings (pts 3/1/0 → GD → GF)
└─ bracket.js: R32 from bracket-config.json
├─ type:"group" → standings[ref][pos-1]
├─ type:"third" → standings[thirdPlaceAssignment[slot]][2] (null → placeholder)
└─ R16…FINAL: sequential pairing of winners (0-1→0, 2-3→1, …)
└─ wc2026_simulation overlays user picks (never mutates JSON)
```
### 3. Time display
```
matches.json time (UTC) ── formatMatchTime(match, stadium, mode)
├─ mode "local" → Intl.DateTimeFormat() (browser tz)
└─ mode "stadium" → Intl.DateTimeFormat({ timeZone: stadium.timezone })
```
---
## Conventions
### Imports
- ES Modules only (`type="module"`), relative paths, no bundler/CDN.
### Naming
- Team ids: 3-letter uppercase (`MEX`, `BRA`). Knockout match ids: `R32-1`…`R32-16`, `R16-1`…, `QF-1`…, `SF-1`/`SF-2`, `THIRD-PLACE`, `FINAL`.
- localStorage keys prefixed `wc2026_`, accessed only through `storage.js`.
### Content / i18n
- All user-facing strings go through `i18n.js` `t(key)` — never hardcode UI text in HTML/JS.
- Data values (team names, stadium names, cities) come from JSON and are not translated.
---
## Where is each thing?
| Question | Answer |
|---|---|
| Where do I update scores / match status? | `data/results.json` |
| Where do I set the 8 best third-place teams? | `data/bracket-config.json` → `thirdPlaceAssignment` |
| Where do I add/translate a UI label? | `assets/js/i18n.js` (both EN and PT dicts) |
| Where is the standings math? | `assets/js/groups.js` |
| Where are knockout teams resolved (placeholders, TBD)? | `assets/js/bracket.js` → `resolveBracketTeams()` |
| Where is simulation state stored/cleared? | `localStorage` key `wc2026_simulation`, via `assets/js/storage.js` |
| Where do I change colors/theme? | CSS variables at the top of `assets/css/style.css` |
| Where do I add a stadium? | `data/stadiums.json` + image in `assets/images/` |
| Where do I change the app name / install icon / theme color? | `manifest.json` (name/short_name/theme) + `assets/icons/` (regenerate PNGs from `icon.svg`) + PWA `` in `index.html` `` |
| How do I replace mock data with real WC2026 data? | `how-update.md` (root) — done 2026-06-12; kept as schema reference |
| How do I update scores during the tournament? | `how-refresh-data.md` (root) — daily results.json routine + thirdPlaceAssignment how-to |
---
## Main functions
(Planned signatures from the complement spec — confirmed/updated as each step is implemented.)
| Function | File | Parameters | Returns | Description |
|---|---|---|---|---|
| `loadData` | `assets/js/app.js` | `()` | `Promise` | Fetches all `data/*.json` in parallel, caches in memory |
| `formatMatchTime` | `assets/js/app.js` | `(match, stadium, mode)` | `string` | UTC → display time; `mode` is `"local"` or `"stadium"` |
| `matchState` | `assets/js/app.js` | `(match, result, now)` | `'over' \| 'live' \| 'upcoming'` | Hybrid JSON+clock state (finished/live win; else clock advances at kickoff/kickoff+window). Used by the hero **and** the schedule occurrence filter / "Awaiting result" chip |
| `get` / `set` | `assets/js/storage.js` | `(key, fallback)` / `(key, value)` | `any` / `void` | localStorage wrapper, auto JSON parse/stringify |
| `t` | `assets/js/i18n.js` | `(key)` | `string` | Translated UI string for current lang |
| `resolveBracketTeams` | `assets/js/bracket.js` | `(matchOrRef)` | `{ home, away }` of `{ team, label }` | Display slots for any match (group or knockout); reused by schedule/modal/filters |
| `getBracketTree` | `assets/js/bracket.js` | `()` | `{ rounds, third, nodesByRef, champion }` | Cached resolved bracket tree |
| `invalidateBracket` | `assets/js/bracket.js` | `()` | `void` | Drop the cached tree (simulation overlay, step 9) |
| `calculateChallengeScore` | `assets/js/bracket.js` | `(simulation, results, bracketTree)` | `{ correct, total, byPhase }` | Compares user picks vs finished results |
| `getShareableLink` | `assets/js/bracket.js` | `()` | `string` | Current URL + `?prediction=base64(simulation)` |
| `loadPredictionFromURL` | `assets/js/bracket.js` | `()` | `void` | Decodes, validates, confirms before overwriting local simulation |
| `toggleFavorite` | `assets/js/storage.js` | `(teamId)` | `void` | Add/remove team in `wc2026_favorites` |
| `computeStandings` | `assets/js/groups.js` | `()` | `{ [letter]: Row[] }` | Sorted standings per group, finished matches only |
| `isGroupFinished` | `assets/js/groups.js` | `(letter)` | `boolean` | All 6 group matches have status finished |
| `navigateTo` | `assets/js/app.js` | `(tab)` | `void` | Programmatic tab switch (cross-view links) |
| `setStadiumFilter` | `assets/js/schedule.js` | `(stadiumName)` | `void` | Reset filters + show one stadium's matches |
| `getFavoriteMatches` | `assets/js/bracket.js` | `(matches, favorites)` | `Match[]` | Matches involving favorited teams (resolved slots); used by schedule |
| `calculateChallengeScore` | `assets/js/bracket.js` | `(simulation, results, bracketTree)` | `{ correct, total, byPhase }` | Picks vs real finished knockout results |
| `getShareableLink` / `loadPredictionFromURL` | `assets/js/bracket.js` | `()` | `string` / `void` | base64 `?prediction=` export/import with validation + confirm |
| `exportMatchToICS` | `assets/js/calendar.js` | `(match, stadium)` | `void` | RFC 5545 VEVENT (UTC, 2h, CRLF, escaped TEXT), Blob download |