customer-presentation/protected/timeline.js

// ─────────────────────────────────────────────────────────────
// protected/timeline.js — timeline scroll, dot-nav, globe, archive.
// This file now also boots the Bifrost scenes (bifrost.js) the first
// time the Overview page is activated via the dot-nav or the
// "Read the editor's note" button.
// ─────────────────────────────────────────────────────────────

// Signal to the Bifrost CSS that JS is running (enables the scroll-
// triggered reveal baseline: .js .some-element { opacity: 0 }).
// Harmless on the timeline itself — nothing on the timeline uses .js.
document.documentElement.classList.add('js');

const EVENTS = [
  // 2022
  { date: '17 Mar 2022', kind: 'Infrastructure', accent: 'ochre',
    hed: 'Europe begins buying a future in a language it does not <em>write.</em>',
    body: 'Three national ministries sign framework agreements for cloud compute measured in dollars, datacenters located far from home.',
    source: 'Le Monde, Archive' },
  { date: '02 Jun 2022', kind: 'Regulation', accent: 'copper',
    hed: 'Brussels publishes the first draft of an act it calls quietly <em>historic.</em>',
    body: 'Early text of what will become the AI Act is circulated to member states; no one yet uses the word sovereignty in public.',
    source: 'EUR-Lex, COM(2022)206' },
  { date: '11 Oct 2022', kind: 'Field Note', accent: 'ochre',
    hed: 'A Danish hospital lists twelve assistants, all hosted <em>elsewhere.</em>',
    body: 'An internal audit at Rigshospitalet finds twelve pilot tools in use across radiology and oncology; none run on Danish soil.',
    source: 'Ugeskrift for Læger' },
  // 2023
  { date: '30 Jan 2023', kind: 'Product', accent: 'terracotta',
    hed: 'A San Francisco chatbot quietly becomes the continent\u2019s unofficial <em>intern.</em>',
    body: 'Ministries, law firms and universities report staff pasting confidential material into a free web tool. Legal teams issue circulars.',
    source: 'Financial Times' },
  { date: '22 Apr 2023', kind: 'Rupture', accent: 'crimson',
    hed: 'Italy switches off the assistant, then switches it back <em>on.</em>',
    body: 'A four-week ban tests the limits of national action against a foreign-hosted model; a truce is brokered behind closed doors.',
    source: 'Il Sole 24 Ore' },
  { date: '14 Jul 2023', kind: 'Regulation', accent: 'copper',
    hed: 'The Act grows teeth, and so does the debate about who <em>sharpens them.</em>',
    body: 'Trilogues yield real penalties for general-purpose models; lobbying intensifies around exemptions for &ldquo;foundational&rdquo; providers.',
    source: 'Politico Europe' },
  { date: '06 Sep 2023', kind: 'Infrastructure', accent: 'ochre',
    hed: 'A hyperscaler lays its fourth European campus, and calls it an act of <em>friendship.</em>',
    body: 'Ground is broken in a small Irish town; the ribbon is cut by two prime ministers and, later, unofficially, the firm\u2019s lawyers.',
    source: 'Reuters' },
  { date: '01 Dec 2023', kind: 'Field Note', accent: 'ochre',
    hed: 'A European bank tallies its reliance and publishes only the <em>summary.</em>',
    body: 'Internal mapping exercise counts 41 AI integrations, 38 of them contingent on a single non-EU cloud provider.',
    source: 'Handelsblatt' },
  // 2024
  { date: '19 Feb 2024', kind: 'Regulation', accent: 'copper',
    hed: 'The Act is adopted, applauded, and then filed somewhere <em>safe.</em>',
    body: 'Parliament passes the final text; implementation is deferred to 2026, giving incumbents eighteen months of grace.',
    source: 'Official Journal' },
  { date: '08 Apr 2024', kind: 'Infrastructure', accent: 'ochre',
    hed: 'A French lab pauses its rollout and asks, in writing, where its data <em>sleeps.</em>',
    body: 'CNRS requests residency guarantees for a ministry-wide assistant; the provider replies with a thirty-page legal memorandum.',
    source: 'CNRS Bulletin' },
  { date: '21 May 2024', kind: 'Rupture', accent: 'crimson',
    hed: 'A foreign court compels disclosure, and a continent learns the meaning of <em>extraterritorial.</em>',
    body: 'Under the CLOUD Act, records held on European servers are produced for a foreign proceeding; European data-protection authorities protest.',
    source: 'New York Times' },
  { date: '02 Jul 2024', kind: 'Product', accent: 'terracotta',
    hed: 'An open-source model is trained in Paris and called, hopefully, a <em>beginning.</em>',
    body: 'A French laboratory releases a 22-billion-parameter model under a permissive license; adoption by ministries is briefly debated.',
    source: 'Le Figaro' },
  { date: '15 Sep 2024', kind: 'Field Note', accent: 'ochre',
    hed: 'A Nordic ministry asks for a sovereign option, and receives a <em>roadmap.</em>',
    body: 'Danish procurement office publishes an RFI for on-premise AI platforms; fourteen vendors respond, four of them European.',
    source: 'Digitaliseringsstyrelsen' },
  { date: '30 Nov 2024', kind: 'Rupture', accent: 'crimson',
    hed: 'A new U.S. administration promises to review, renegotiate and in some cases <em>revoke.</em>',
    body: 'Transition teams signal appetite to revisit the transatlantic data framework; European counsel spend December on contingency memos.',
    source: 'Bloomberg' },
  // 2025
  { date: '22 Jan 2025', kind: 'Field Note', accent: 'ochre',
    hed: 'A quiet exodus begins, with no press release and no <em>timetable.</em>',
    body: 'Several EU agencies move sensitive workloads off non-EU clouds and into operational hardware hosted by smaller, domestic providers.',
    source: 'Politico Europe' },
  { date: '18 Mar 2025', kind: 'Infrastructure', accent: 'copper',
    hed: 'Fenja AI is incorporated in Copenhagen, on a Monday, without <em>ceremony.</em>',
    body: 'A small team begins work on an on-premise AI platform intended for critical sectors — health, finance, energy, public administration.',
    source: 'Erhvervsstyrelsen' },
  { date: '04 May 2025', kind: 'Regulation', accent: 'copper',
    hed: 'The Commission funds three &ldquo;foundation-stone&rdquo; initiatives, and Europe exhales <em>carefully.</em>',
    body: 'Digital Europe program awards grants to sovereign-infrastructure consortia, including a Nordic group led out of Denmark.',
    source: 'DG CNECT' },
  { date: '27 Jul 2025', kind: 'Product', accent: 'terracotta',
    hed: 'A regulator issues a fine of nine figures, and a precedent of <em>ten.</em>',
    body: 'The Irish Data Protection Commissioner fines a major U.S. provider over transfer mechanisms; the ruling is widely read as pivotal.',
    source: 'DPC Ireland' },
  { date: '14 Sep 2025', kind: 'Rupture', accent: 'crimson',
    hed: 'A multi-day outage reminds a continent that sovereignty is, among other things, <em>electrical.</em>',
    body: 'A regional cloud incident takes portions of public services offline for thirty-one hours; emergency plans are reviewed everywhere.',
    source: 'FAZ' },
  { date: '03 Nov 2025', kind: 'Field Note', accent: 'ochre',
    hed: 'Procurement teams begin to ask a new question, and in <em>writing.</em>',
    body: 'Tender documents across six member states add an explicit residency clause; three require open-source inference and local hosting.',
    source: 'TED — Tenders Electronic Daily' },
  // 2026
  { date: '12 Jan 2026', kind: 'Product', accent: 'copper',
    hed: 'Fenja announces Project Bifrost, named after the bridge that crossed <em>everything.</em>',
    body: 'A client-hosted, open-source AI platform designed for regulated European sectors; first deployments announced for Q2.',
    source: 'Fenja AI — Field Notes III' },
  { date: '28 Feb 2026', kind: 'Field Note', accent: 'copper',
    hed: 'The first hospital signs, and asks that the news be kept <em>small.</em>',
    body: 'A regional Danish health authority adopts the platform for radiology triage; the announcement is a single sentence on page nine.',
    source: 'Region Hovedstaden' },
  { date: '14 Apr 2026', kind: 'Editorial', accent: 'copper',
    hed: 'A catalog is closed, and a second one is quietly <em>begun.</em>',
    body: 'The editors mark this issue closed, pending the events of the coming year, which will arrive on their own schedule.',
    source: 'Fenja AI — Field Notes IV' },
];

/* ─────────────────────────────────────────────────────────────
   Timeline layout
   ───────────────────────────────────────────────────────────── */
const CARD_PITCH = 380; // horizontal spacing between card centers
const LEFT_PAD   = 520;  // extra room so first above-card clears the title/sub
const RIGHT_PAD  = 280;

const track    = document.getElementById('tl-track');
const viewport = document.getElementById('tl-viewport');
const spine    = document.getElementById('spine');

function buildTimeline() {
  // Year ticks
  const years = [...new Set(EVENTS.map(e => e.date.slice(-4)))].sort();
  // Build cards
  EVENTS.forEach((e, i) => {
    const x = LEFT_PAD + i * CARD_PITCH;
    const above = i % 2 === 0;
    const card = document.createElement('article');
    card.className = 'evt ' + (above ? 'above' : 'below');
    card.dataset.accent = e.accent;
    card.style.left = (x - 160) + 'px';
    card.innerHTML = `
      <span class="node"></span>
      <div class="tag-row">
        <span class="date">${e.date}</span>
        <span class="kind">${e.kind}</span>
      </div>
      <h3>${e.hed}</h3>
      <p>${e.body}</p>
      <div class="source">${e.source}</div>
    `;
    track.appendChild(card);
  });

  // Year ticks
  years.forEach(y => {
    // place tick at first event of that year
    const firstIdx = EVENTS.findIndex(e => e.date.endsWith(y));
    const x = LEFT_PAD + firstIdx * CARD_PITCH - CARD_PITCH * 0.42;
    const tick = document.createElement('div');
    tick.className = 'year-tick';
    tick.style.left = x + 'px';
    tick.innerHTML = `<span class="y">${y}</span>`;
    track.appendChild(tick);
  });

  // Set track width
  const totalW = LEFT_PAD + EVENTS.length * CARD_PITCH + RIGHT_PAD;
  track.style.width = totalW + 'px';
}

buildTimeline();

/* Horizontal scroll + inertia — mousewheel-driven */
const state = {
  target: 0,
  current: 0,
  max: 0,
  rafPending: false,
};

function recalcMax() {
  state.max = Math.max(0, track.offsetWidth - window.innerWidth);
}
recalcMax();
window.addEventListener('resize', recalcMax);

function clamp(v, lo, hi){ return Math.max(lo, Math.min(hi, v)); }

function onWheel(e) {
  // Prefer vertical delta (mousewheel); allow horizontal from trackpads too.
  const dy = Math.abs(e.deltaY) > Math.abs(e.deltaX) ? e.deltaY : e.deltaX;
  state.target = clamp(state.target + dy * 1.1, 0, state.max);
  e.preventDefault();
  kick();
}

function kick() {
  if (state.rafPending) return;
  state.rafPending = true;
  requestAnimationFrame(tick);
}

function tick() {
  const diff = state.target - state.current;
  state.current += diff * 0.12; // soft inertia
  if (Math.abs(diff) < 0.3) {
    state.current = state.target;
    state.rafPending = false;
  } else {
    requestAnimationFrame(tick);
  }
  applyScroll();
}

function applyScroll() {
  const vw = window.innerWidth;

  // Timeline starts offscreen to the right. At scroll=0 we add one full
  // viewport of extra offset so no cards are visible; the hero caption has
  // the page to itself. As the reader scrolls, this intro offset decays to
  // zero and then the track scrolls normally.
  const introTravel = vw;
  const introProg = Math.min(1, state.current / introTravel);
  const extraOffset = introTravel * (1 - introProg);
  track.style.transform = `translate3d(${-state.current + extraOffset}px,0,0)`;

  // Front-matter fades once the user has begun scrolling
  const pageEl = document.getElementById('page-timeline');
  pageEl.classList.toggle('is-scrolled', state.current > 40);

  // Progress across the entire catalog (0 → 1)
  const p = state.max > 0 ? state.current / state.max : 0;

  // Globe opacity — peaks around the 40% mark, where the globe is doing
  // its most descriptive work (mid-rotation between the Atlantic and Europe).
  // Baseline 0.50, peak 0.78 at p=0.40, then softens back to 0.52 by the end.
  const wrapEl = document.getElementById('globe-wrap');
  if (wrapEl) {
    const peak = 1 - Math.min(1, Math.abs(p - 0.40) / 0.40);
    const opacity = 0.50 + peak * 0.28;
    wrapEl.style.opacity = opacity.toFixed(3);
  }

  // Reveal cards (fade + up, one-way once visible).
  // NB: account for the intro offset so cards don't arm while offscreen.
  document.querySelectorAll('.evt').forEach(el => {
    const left = parseFloat(el.style.left);
    const onscreen = left - state.current + extraOffset;
    if (onscreen < vw + 200 && onscreen > -600) {
      el.classList.add('is-near');
    }
  });

  // Continue button — visible once we're near the end and past the front matter
  const nearEnd = state.max > 0 && (state.max - state.current) < (vw * 1.1);
  const btn = document.getElementById('continue-btn');
  if (btn) btn.classList.toggle('is-visible', nearEnd && state.current > 40);

  // Globe rotation — from North America toward Europe as we advance.
  const rotDeg = 95 + (-10 - 95) * p;
  if (globe.setRotation) globe.setRotation(rotDeg);

  // Screen label for commenting context
  const idx = Math.min(EVENTS.length - 1,
                       Math.round(state.current / CARD_PITCH));
  const slug = '01 Timeline · ' + String(idx + 1).padStart(2, '0') + '/' + EVENTS.length;
  pageEl.setAttribute('data-screen-label', slug);
}

/* Keyboard navigation for accessibility */
window.addEventListener('keydown', (e) => {
  if (document.getElementById('page-timeline').classList.contains('is-active')) {
    if (e.key === 'ArrowRight' || e.key === 'PageDown') {
      state.target = clamp(state.target + CARD_PITCH, 0, state.max);
      kick();
    } else if (e.key === 'ArrowLeft' || e.key === 'PageUp') {
      state.target = clamp(state.target - CARD_PITCH, 0, state.max);
      kick();
    } else if (e.key === 'Home') {
      state.target = 0; kick();
    } else if (e.key === 'End') {
      state.target = state.max; kick();
    }
  }
});

viewport.addEventListener('wheel', onWheel, { passive: false });

/* Continue button — click routes to the Overview page (same dot-nav path) */
document.getElementById('continue-btn').addEventListener('click', () => {
  const overBtn = document.querySelector('.dot-btn[data-target="page-overview"]');
  if (overBtn) overBtn.click();
});

/* ─────────────────────────────────────────────────────────────
   Globe — orthographic, paper-toned, top/bottom masked by CSS
   ───────────────────────────────────────────────────────────── */
const WORLD_URL = 'vendor/countries-110m.json';
const globe = { setRotation: null };

/* Kick once so initial cards reveal \u2014 deferred to next frame so layout settles
   before transitions can arm. Then enable transitions on all cards. */
requestAnimationFrame(() => {
  applyScroll();
  requestAnimationFrame(() => {
    document.querySelectorAll('.evt').forEach(el => el.classList.add('can-animate'));
  });
});

(function initGlobe() {
  const wrap = document.getElementById('globe-wrap');
  buildGlobe(wrap, { rotateLambda: 95, rotatePhi: -10, setRotationTarget: globe });

  // Second globe — sits behind the Overview page, centered on Europe.
  // λ = -10° (central longitude over western Europe / Iberia)
  // φ = -50° (in d3 this puts 50°N latitude at the SVG center; Germany / N. France)
  const overviewWrap = document.getElementById('overview-globe');
  if (overviewWrap) {
    buildGlobe(overviewWrap, { rotateLambda: -10, rotatePhi: -50 });
  }
})();

/* Build a single orthographic globe SVG inside `wrap`.
   Options:
     rotateLambda       : initial longitude center (d3 convention: negate east)
     rotatePhi          : latitude tilt (d3: negate north latitude)
     setRotationTarget  : if supplied, exposes a setRotation(deg) on the object
*/
function buildGlobe(wrap, opts) {
  const W = 1400, H = 1400;
  const svg = document.createElementNS('http://www.w3.org/2000/svg', 'svg');
  svg.setAttribute('viewBox', `0 0 ${W} ${H}`);
  svg.setAttribute('preserveAspectRatio', 'xMidYMid meet');

  const INK = '#383831';
  const PAPER_LOW = '#ece5d2';

  // Ocean
  const ocean = document.createElementNS(svg.namespaceURI, 'circle');
  ocean.setAttribute('cx', W/2); ocean.setAttribute('cy', H/2);
  ocean.setAttribute('r', 560);
  ocean.setAttribute('fill', PAPER_LOW);
  ocean.setAttribute('opacity', '0.55');
  svg.appendChild(ocean);

  // defs clip
  const defs = document.createElementNS(svg.namespaceURI, 'defs');
  const clip = document.createElementNS(svg.namespaceURI, 'clipPath');
  const clipId = 'globeClip-' + Math.random().toString(36).slice(2, 8);
  clip.setAttribute('id', clipId);
  const cc = document.createElementNS(svg.namespaceURI, 'circle');
  cc.setAttribute('cx', W/2); cc.setAttribute('cy', H/2); cc.setAttribute('r', 560);
  clip.appendChild(cc); defs.appendChild(clip); svg.appendChild(defs);

  const g = document.createElementNS(svg.namespaceURI, 'g');
  g.setAttribute('clip-path', `url(#${clipId})`);
  svg.appendChild(g);

  const gratPath = document.createElementNS(svg.namespaceURI, 'path');
  gratPath.setAttribute('fill', 'none');
  gratPath.setAttribute('stroke', INK);
  gratPath.setAttribute('stroke-width', '0.8');
  gratPath.setAttribute('opacity', '0.18');
  g.appendChild(gratPath);

  const countriesPath = document.createElementNS(svg.namespaceURI, 'path');
  countriesPath.setAttribute('fill', '#faf6ee');
  countriesPath.setAttribute('fill-opacity', '0.85');
  countriesPath.setAttribute('stroke', 'none');
  g.appendChild(countriesPath);

  const bordersPath = document.createElementNS(svg.namespaceURI, 'path');
  bordersPath.setAttribute('fill', 'none');
  bordersPath.setAttribute('stroke', INK);
  bordersPath.setAttribute('stroke-width', '0.8');
  bordersPath.setAttribute('stroke-linejoin', 'round');
  bordersPath.setAttribute('opacity', '0.55');
  g.appendChild(bordersPath);

  // Faint outer rim — tonal, not hard
  const rim = document.createElementNS(svg.namespaceURI, 'circle');
  rim.setAttribute('cx', W/2); rim.setAttribute('cy', H/2); rim.setAttribute('r', 560);
  rim.setAttribute('fill', 'none');
  rim.setAttribute('stroke', INK);
  rim.setAttribute('stroke-width', '1');
  rim.setAttribute('opacity', '0.22');
  svg.appendChild(rim);

  wrap.appendChild(svg);

  fetch(WORLD_URL).then(r => r.json()).then(topo => {
    const countries = window.topojson.feature(topo, topo.objects.countries);
    const borders   = window.topojson.mesh(topo, topo.objects.countries, (a,b) => a !== b);
    const graticule = window.d3.geoGraticule().step([20, 20]);
    const proj = window.d3.geoOrthographic()
      .scale(560).translate([W/2, H/2])
      .rotate([opts.rotateLambda, opts.rotatePhi ?? -10, 0]).clipAngle(90);
    const pathFn = window.d3.geoPath(proj);

    function render() {
      gratPath.setAttribute('d', pathFn(graticule()) || '');
      countriesPath.setAttribute('d', pathFn(countries) || '');
      bordersPath.setAttribute('d', pathFn(borders) || '');
    }
    render();
    if (opts.setRotationTarget) {
      const phi = opts.rotatePhi ?? -10;
      opts.setRotationTarget.setRotation = function(deg) {
        proj.rotate([deg, phi, 0]);
        render();
      };
    }
  }).catch(err => {
    console.warn('globe topology failed to load', err);
  });
}

/* ─────────────────────────────────────────────────────────────
   Archive table
   ───────────────────────────────────────────────────────────── */
(function buildArchive() {
  const tbody = document.getElementById('archive-body');
  EVENTS.forEach((e, i) => {
    const tr = document.createElement('tr');
    tr.dataset.accent = e.accent;
    tr.innerHTML = `
      <td class="num">${String(i + 1).padStart(2, '0')}</td>
      <td class="date">${e.date}</td>
      <td class="kind">${e.kind}</td>
      <td class="hed">${e.hed}</td>
      <td class="src">${e.source}</td>
    `;
    tbody.appendChild(tr);
  });
})();

/* ─────────────────────────────────────────────────────────────
   Dot-nav + Bifrost lazy-boot on Overview activation
   ───────────────────────────────────────────────────────────── */

// Switch active page. When Overview becomes active, fire
// window.__bifrost.init() (idempotent) so the scenes wire up
// exactly once, on first visit. Subsequent activations just
// refresh ScrollTrigger in case the window was resized.
function activatePage(targetId) {
  document.querySelectorAll('.page').forEach(p => {
    p.classList.toggle('is-active', p.id === targetId);
  });
  document.querySelectorAll('.dot-btn').forEach(b => {
    b.classList.toggle('is-active', b.dataset.target === targetId);
  });
  if (targetId === 'page-overview' && window.__bifrost && typeof window.__bifrost.init === 'function') {
    // Let the page transition start painting first, then init.
    // 60ms is about one-and-a-half frames at 120Hz, plenty for the
    // .page-overview.is-active class to flip. Short enough that the
    // user can't scroll before ScrollTriggers are wired up.
    setTimeout(() => window.__bifrost.init(), 60);
  }
}

document.querySelectorAll('.dot-btn').forEach(btn => {
  btn.addEventListener('click', () => activatePage(btn.dataset.target));
});