Initial implementation of temporal progress page

Seven particle-based progress cards (hour, day, week, month, year, summer, fall) with work-time mode toggle and bridge days support. Light elegant design with accumulating particle animation. Express server proxies dagsmart.se API.
2026-03-24 08:14:57 +01:00
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+---
+name: robert
+description: Interview the user relentlessly about a plan or design until reaching shared understanding, resolving each branch of the decision tree. Use when user wants to stress-test a plan, get grilled on their design, or mentions "Robert".
+---
+
+Interview me relentlessly about every aspect of this plan until we reach a shared understanding. Walk down each branch of the design tree, resolving dependencies between decisions one-by-one.
+
+If a question can be answered by exploring the codebase, explore the codebase instead.
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+node_modules/
@@ -0,0 +1,58 @@
+# Aftersummer — Design Plan
+
+## Concept
+A single-page web app showing temporal progress across multiple scales, with an optional work-time mode. Elegant, light, particle-based visuals.
+
+## Visual Design
+- Light warm background (#f7f6f2)
+- Particle accumulation: dark particles fill each card as time passes
+- Elegant sans-serif typography (Inter)
+- No raw percentages — contextual labels only ("42m remaining", "3 working days till summer")
+
+## Cards (7 total, stacked to fill viewport)
+| Card    | Normal mode                     | Work mode                              |
+|---------|---------------------------------|----------------------------------------|
+| Hour    | 0–59 min of current hour        | Same — inactive outside work hours     |
+| Day     | 00:00–23:59                     | 08:00–12:00 + 13:00–17:00 (8h)        |
+| Week    | Mon 00:00 – Sun 23:59           | Mon–Fri, work hours only               |
+| Month   | Calendar days                   | Working days in month                  |
+| Year    | Calendar days                   | Working days in year                   |
+| Summer  | Jan 1 → Midsommarafton progress | Working days — special state in summer |
+| Fall    | 1st Mon Aug → Dec 31 progress   | Working days                           |
+
+## Card States
+- **active**: dark particles accumulating
+- **not-work-time**: muted grey particles, greyed label (outside work hours/days)
+- **summer**: warm amber particles at 100% (Midsommarafton → 1st Mon Aug)
+- **off-season**: cool grey-blue particles at 0% (fall card before fall starts)
+
+## Work Rules
+- Hours: 08:00–12:00 + 13:00–17:00 (8 effective hours, lunch excluded)
+- Days: Mon–Fri
+- July: entirely off (covered by summer period)
+- Holidays: from dagsmart.se API
+- Bridge days: optional (separate toggle)
+
+## Summer / Fall Periods
+- **Summer**: Midsommarafton (from API) → first Monday of August
+- **Pre-summer**: Jan 1 → Midsommarafton
+- **Fall**: first Monday of August → Dec 31
+
+## API
+- **Base URL**: `https://api.dagsmart.se`
+- `GET /holidays?year=YEAR&weekends=false` → `[{ date, code, name: {en, sv} }]`
+  - Note: returns holidays that fall on weekends too (e.g. Easter Saturday) — must check weekends separately
+  - Midsommarafton code: `midsummerEve`
+- `GET /bridge-days?year=YEAR` → `[{ date }]` (no code/name)
+- Cached in localStorage per year, refreshed if stale (different year)
+- Proxied through local server to avoid CORS
+
+## UI Controls
+- **Work time** toggle: switches all cards to work-mode calculations
+- **Bridge days** toggle: visible only when work mode is on; treats bridge days as non-work
+
+## Stack
+- Vanilla JS (ES modules), no framework, no build step
+- Single `public/index.html` + `public/style.css` + `public/app.js`
+- Node.js + Express server: serves static files + proxies API calls
+- `npm start` to run
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+}
@@ -0,0 +1,554 @@
+// ─────────────────────────────────────────────────────────────────────────────
+// Constants
+// ─────────────────────────────────────────────────────────────────────────────
+
+const WORK_START  = 8 * 60;   // 08:00 in minutes from midnight
+const LUNCH_START = 12 * 60;  // 12:00
+const LUNCH_END   = 13 * 60;  // 13:00
+const WORK_END    = 17 * 60;  // 17:00
+const WORK_MINUTES = 8 * 60;  // 480 min = 8 effective hours
+
+const CARDS = [
+  { id: 'hour',   label: 'Hour'   },
+  { id: 'day',    label: 'Day'    },
+  { id: 'week',   label: 'Week'   },
+  { id: 'month',  label: 'Month'  },
+  { id: 'year',   label: 'Year'   },
+  { id: 'summer', label: 'Summer' },
+  { id: 'fall',   label: 'Fall'   },
+];
+
+const PARTICLE_COLORS = {
+  active:       [26,  26,  46 ],
+  'not-work-time': [185, 180, 172],
+  summer:       [196, 144, 42 ],
+  'off-season': [160, 168, 184],
+};
+
+// ─────────────────────────────────────────────────────────────────────────────
+// App State
+// ─────────────────────────────────────────────────────────────────────────────
+
+const state = {
+  workMode: false,
+  includeBridgeDays: false,
+  holidaySet: new Set(),
+  bridgeDaySet: new Set(),
+  midsommar: null,   // Date of midsommarafton
+  fallStart: null,   // Date of first Monday of August
+  loaded: false,
+};
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Date Utilities
+// ─────────────────────────────────────────────────────────────────────────────
+
+function formatDate(date) {
+  const y = date.getFullYear();
+  const m = String(date.getMonth() + 1).padStart(2, '0');
+  const d = String(date.getDate()).padStart(2, '0');
+  return `${y}-${m}-${d}`;
+}
+
+function startOfDay(date) {
+  const d = new Date(date);
+  d.setHours(0, 0, 0, 0);
+  return d;
+}
+
+function firstMondayOfAugust(year) {
+  const d = new Date(year, 7, 1); // Aug 1
+  const day = d.getDay(); // 0=Sun, 1=Mon, ...
+  const offset = day === 1 ? 0 : (8 - day) % 7;
+  return new Date(year, 7, 1 + offset);
+}
+
+function seededRandom(seed) {
+  const x = Math.sin(seed + 1) * 10000;
+  return x - Math.floor(x);
+}
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Work Time Utilities
+// ─────────────────────────────────────────────────────────────────────────────
+
+function isWeekend(date) {
+  const d = date.getDay();
+  return d === 0 || d === 6;
+}
+
+function isJuly(date) {
+  return date.getMonth() === 6;
+}
+
+function isWorkDay(date) {
+  if (isWeekend(date)) return false;
+  if (isJuly(date)) return false;
+  const ds = formatDate(date);
+  if (state.holidaySet.has(ds)) return false;
+  if (state.includeBridgeDays && state.bridgeDaySet.has(ds)) return false;
+  return true;
+}
+
+// Returns elapsed work minutes today (0 to WORK_MINUTES)
+function elapsedWorkMinutesToday(now) {
+  const mins = now.getHours() * 60 + now.getMinutes() + now.getSeconds() / 60;
+  if (mins < WORK_START) return 0;
+  if (mins >= WORK_END) return WORK_MINUTES;
+  if (mins >= LUNCH_START && mins < LUNCH_END) return LUNCH_START - WORK_START;
+  if (mins < LUNCH_START) return mins - WORK_START;
+  return (LUNCH_START - WORK_START) + (mins - LUNCH_END);
+}
+
+function isCurrentlyWorkTime(now) {
+  if (!isWorkDay(now)) return false;
+  const mins = now.getHours() * 60 + now.getMinutes();
+  if (mins < WORK_START || mins >= WORK_END) return false;
+  if (mins >= LUNCH_START && mins < LUNCH_END) return false;
+  return true;
+}
+
+// Count work days in [start, end) — start inclusive, end exclusive
+function countWorkDays(start, end) {
+  let count = 0;
+  const d = startOfDay(start);
+  const e = startOfDay(end);
+  while (d < e) {
+    if (isWorkDay(d)) count++;
+    d.setDate(d.getDate() + 1);
+  }
+  return count;
+}
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Label Formatting
+// ─────────────────────────────────────────────────────────────────────────────
+
+function fmtMinutes(min) {
+  const h = Math.floor(min / 60);
+  const m = Math.ceil(min % 60);
+  if (h === 0) return `${m}m`;
+  if (m === 0) return `${h}h`;
+  return `${h}h ${m}m`;
+}
+
+function fmtDays(n, prefix = '', suffix = 'remaining') {
+  const d = n === 1 ? 'day' : 'days';
+  return [prefix, `${n}`, d, suffix].filter(Boolean).join(' ');
+}
+
+function fmtWorkDays(n, prefix = '', suffix = 'remaining') {
+  const d = n === 1 ? 'working day' : 'working days';
+  return [prefix, `${n}`, d, suffix].filter(Boolean).join(' ');
+}
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Progress Calculations
+// Each returns { progress: 0–1, remainingLabel: string, cardState: string }
+// cardState: 'active' | 'not-work-time' | 'summer' | 'off-season'
+// ─────────────────────────────────────────────────────────────────────────────
+
+function getHourState(now) {
+  if (state.workMode && !isCurrentlyWorkTime(now)) {
+    const msg = isWorkDay(now) ? 'outside work hours' : 'not a work day';
+    return { progress: 0, remainingLabel: msg, cardState: 'not-work-time' };
+  }
+  const mins = now.getMinutes() + now.getSeconds() / 60;
+  const remaining = Math.ceil(60 - mins);
+  return { progress: mins / 60, remainingLabel: `${remaining}m remaining`, cardState: 'active' };
+}
+
+function getDayState(now) {
+  if (state.workMode) {
+    if (!isWorkDay(now)) {
+      return { progress: 0, remainingLabel: 'not a work day', cardState: 'not-work-time' };
+    }
+    const mins = now.getHours() * 60 + now.getMinutes();
+    if (mins < WORK_START) {
+      return { progress: 0, remainingLabel: 'work starts at 08:00', cardState: 'not-work-time' };
+    }
+    if (mins >= LUNCH_START && mins < LUNCH_END) {
+      return { progress: (LUNCH_START - WORK_START) / WORK_MINUTES, remainingLabel: 'lunch break', cardState: 'not-work-time' };
+    }
+    if (mins >= WORK_END) {
+      return { progress: 1, remainingLabel: 'work day done', cardState: 'not-work-time' };
+    }
+    const elapsed = elapsedWorkMinutesToday(now);
+    const remaining = WORK_MINUTES - elapsed;
+    return { progress: elapsed / WORK_MINUTES, remainingLabel: fmtMinutes(remaining) + ' remaining', cardState: 'active' };
+  }
+  const secs = now.getHours() * 3600 + now.getMinutes() * 60 + now.getSeconds();
+  const remainSecs = 86400 - secs;
+  return { progress: secs / 86400, remainingLabel: fmtMinutes(remainSecs / 60) + ' remaining', cardState: 'active' };
+}
+
+function getWeekState(now) {
+  const dow = (now.getDay() + 6) % 7; // 0=Mon, 6=Sun
+  const monday = startOfDay(now);
+  monday.setDate(monday.getDate() - dow);
+  const nextMonday = new Date(monday);
+  nextMonday.setDate(monday.getDate() + 7);
+
+  if (state.workMode) {
+    const friday = new Date(monday);
+    friday.setDate(monday.getDate() + 5); // exclusive end (Sat)
+    const totalWork = countWorkDays(monday, friday);
+    if (totalWork === 0) {
+      return { progress: 0, remainingLabel: 'no work days this week', cardState: 'not-work-time' };
+    }
+    let elapsed = countWorkDays(monday, startOfDay(now));
+    if (isWorkDay(now)) elapsed += elapsedWorkMinutesToday(now) / WORK_MINUTES;
+    const progress = Math.min(1, elapsed / totalWork);
+    const remaining = Math.ceil(totalWork - elapsed);
+    const label = remaining <= 0 ? 'week done' : fmtWorkDays(remaining);
+    return { progress, remainingLabel: label, cardState: 'active' };
+  }
+
+  const progress = (now - monday) / (nextMonday - monday);
+  const remainMs = nextMonday - now;
+  const remainDays = Math.ceil(remainMs / 86400000);
+  return { progress, remainingLabel: fmtDays(remainDays), cardState: 'active' };
+}
+
+function getMonthState(now) {
+  const year = now.getFullYear();
+  const month = now.getMonth();
+  const firstDay = new Date(year, month, 1);
+  const firstNextMonth = new Date(year, month + 1, 1);
+
+  if (state.workMode) {
+    const totalWork = countWorkDays(firstDay, firstNextMonth);
+    if (totalWork === 0) {
+      return { progress: 1, remainingLabel: 'no work days this month', cardState: 'not-work-time' };
+    }
+    let elapsed = countWorkDays(firstDay, startOfDay(now));
+    if (isWorkDay(now)) elapsed += elapsedWorkMinutesToday(now) / WORK_MINUTES;
+    const progress = Math.min(1, elapsed / totalWork);
+    const remaining = Math.ceil(totalWork - elapsed);
+    const label = remaining <= 0 ? 'month done' : fmtWorkDays(remaining);
+    return { progress, remainingLabel: label, cardState: 'active' };
+  }
+
+  const progress = (now - firstDay) / (firstNextMonth - firstDay);
+  const remainDays = Math.ceil((firstNextMonth - now) / 86400000);
+  return { progress, remainingLabel: fmtDays(remainDays), cardState: 'active' };
+}
+
+function getYearState(now) {
+  const year = now.getFullYear();
+  const firstDay = new Date(year, 0, 1);
+  const firstNextYear = new Date(year + 1, 0, 1);
+
+  if (state.workMode) {
+    const totalWork = countWorkDays(firstDay, firstNextYear);
+    let elapsed = countWorkDays(firstDay, startOfDay(now));
+    if (isWorkDay(now)) elapsed += elapsedWorkMinutesToday(now) / WORK_MINUTES;
+    const progress = Math.min(1, elapsed / totalWork);
+    const remaining = Math.ceil(totalWork - elapsed);
+    const label = remaining <= 0 ? 'year done' : fmtWorkDays(remaining);
+    return { progress, remainingLabel: label, cardState: 'active' };
+  }
+
+  const progress = (now - firstDay) / (firstNextYear - firstDay);
+  const remainDays = Math.ceil((firstNextYear - now) / 86400000);
+  return { progress, remainingLabel: fmtDays(remainDays), cardState: 'active' };
+}
+
+function getSummerState(now) {
+  const { midsommar, fallStart } = state;
+  if (!midsommar || !fallStart) return { progress: 0, remainingLabel: '…', cardState: 'active' };
+
+  const year = now.getFullYear();
+  const janFirst = new Date(year, 0, 1);
+
+  // Currently summer
+  if (now >= midsommar && now < fallStart) {
+    const backDate = fallStart.toLocaleDateString('sv-SE', { month: 'short', day: 'numeric' });
+    return { progress: 1, remainingLabel: `back ${backDate}`, cardState: 'summer' };
+  }
+
+  // Pre-summer (before midsommar)
+  if (now < midsommar) {
+    if (state.workMode) {
+      const totalWork = countWorkDays(janFirst, midsommar);
+      let elapsed = countWorkDays(janFirst, startOfDay(now));
+      if (isWorkDay(now)) elapsed += elapsedWorkMinutesToday(now) / WORK_MINUTES;
+      const progress = totalWork > 0 ? Math.min(1, elapsed / totalWork) : 0;
+      const remaining = Math.ceil(totalWork - elapsed);
+      const label = remaining <= 0 ? 'summer soon!' : fmtWorkDays(remaining, '', 'till summer');
+      return { progress, remainingLabel: label, cardState: 'active' };
+    }
+    const progress = (now - janFirst) / (midsommar - janFirst);
+    const remainDays = Math.ceil((midsommar - now) / 86400000);
+    return { progress, remainingLabel: fmtDays(remainDays, '', 'till summer'), cardState: 'active' };
+  }
+
+  // After summer (fall/end of year) — point to next year's summer
+  const nextYearStart = new Date(year + 1, 0, 1);
+  const remainDays = Math.ceil((nextYearStart - now) / 86400000);
+  return { progress: 1, remainingLabel: fmtDays(remainDays, '', 'till new year'), cardState: 'off-season' };
+}
+
+function getFallState(now) {
+  const { fallStart } = state;
+  if (!fallStart) return { progress: 0, remainingLabel: '…', cardState: 'off-season' };
+
+  const year = now.getFullYear();
+  const yearEnd = new Date(year + 1, 0, 1);
+
+  if (now < fallStart) {
+    const remainDays = Math.ceil((fallStart - now) / 86400000);
+    return { progress: 0, remainingLabel: fmtDays(remainDays, '', 'till fall'), cardState: 'off-season' };
+  }
+
+  if (state.workMode) {
+    const totalWork = countWorkDays(fallStart, yearEnd);
+    let elapsed = countWorkDays(fallStart, startOfDay(now));
+    if (isWorkDay(now)) elapsed += elapsedWorkMinutesToday(now) / WORK_MINUTES;
+    const progress = totalWork > 0 ? Math.min(1, elapsed / totalWork) : 0;
+    const remaining = Math.ceil(totalWork - elapsed);
+    const label = remaining <= 0 ? 'year done!' : fmtWorkDays(remaining);
+    return { progress, remainingLabel: label, cardState: 'active' };
+  }
+
+  const progress = Math.min(1, (now - fallStart) / (yearEnd - fallStart));
+  const remainDays = Math.ceil((yearEnd - now) / 86400000);
+  return { progress, remainingLabel: fmtDays(remainDays), cardState: 'active' };
+}
+
+function getCardState(id, now) {
+  switch (id) {
+    case 'hour':   return getHourState(now);
+    case 'day':    return getDayState(now);
+    case 'week':   return getWeekState(now);
+    case 'month':  return getMonthState(now);
+    case 'year':   return getYearState(now);
+    case 'summer': return getSummerState(now);
+    case 'fall':   return getFallState(now);
+  }
+}
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Particle Field
+// ─────────────────────────────────────────────────────────────────────────────
+
+class ParticleField {
+  constructor(canvas, seed) {
+    this.canvas = canvas;
+    this.ctx = canvas.getContext('2d');
+    this.seed = seed;
+    this.particles = [];
+    this.N = 120;
+    this.targetProgress = 0;
+    this.currentProgress = 0;
+    this.cardState = 'active';
+
+    this._initParticles();
+
+    this._ro = new ResizeObserver(() => this._onResize());
+    this._ro.observe(canvas.parentElement);
+  }
+
+  _onResize() {
+    const rect = this.canvas.parentElement.getBoundingClientRect();
+    this.canvas.width = rect.width * devicePixelRatio;
+    this.canvas.height = rect.height * devicePixelRatio;
+    this.canvas.style.width = rect.width + 'px';
+    this.canvas.style.height = rect.height + 'px';
+    this._initParticles();
+  }
+
+  _initParticles() {
+    const { N, seed } = this;
+    const w = this.canvas.width;
+    const h = this.canvas.height;
+    this.particles = Array.from({ length: N }, (_, i) => ({
+      x:     seededRandom(seed * 200 + i * 5    ) * w,
+      y:     seededRandom(seed * 200 + i * 5 + 1) * h,
+      size:  (1.5 + seededRandom(seed * 200 + i * 5 + 2) * 2.5) * devicePixelRatio,
+      phase: seededRandom(seed * 200 + i * 5 + 3) * Math.PI * 2,
+      speed: 0.3 + seededRandom(seed * 200 + i * 5 + 4) * 0.5,
+      opacity: 0,
+    }));
+  }
+
+  update(progress, cardState) {
+    this.targetProgress = progress;
+    this.cardState = cardState;
+  }
+
+  draw(ts) {
+    const { ctx, canvas, particles, N } = this;
+    ctx.clearRect(0, 0, canvas.width, canvas.height);
+
+    // Smoothly interpolate progress
+    this.currentProgress += (this.targetProgress - this.currentProgress) * 0.025;
+
+    const activeCount = Math.floor(this.currentProgress * N);
+    const color = PARTICLE_COLORS[this.cardState] || PARTICLE_COLORS.active;
+    const t = ts * 0.001;
+
+    for (let i = 0; i < N; i++) {
+      const p = particles[i];
+      const targetOpacity = i < activeCount
+        ? 0.35 + seededRandom(this.seed * 200 + i * 5 + 2) * 0.3
+        : 0;
+      p.opacity += (targetOpacity - p.opacity) * 0.04;
+      if (p.opacity < 0.005) continue;
+
+      const dx = Math.sin(t * p.speed + p.phase) * 3 * devicePixelRatio;
+      const dy = Math.cos(t * p.speed * 0.7 + p.phase + 1.3) * 2 * devicePixelRatio;
+
+      ctx.beginPath();
+      ctx.arc(p.x + dx, p.y + dy, p.size, 0, Math.PI * 2);
+      ctx.fillStyle = `rgba(${color[0]},${color[1]},${color[2]},${p.opacity})`;
+      ctx.fill();
+    }
+  }
+
+  destroy() {
+    this._ro.disconnect();
+  }
+}
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Data Loading & Caching
+// ─────────────────────────────────────────────────────────────────────────────
+
+async function fetchWithCache(url, cacheKey) {
+  const cached = localStorage.getItem(cacheKey);
+  if (cached) {
+    try {
+      const { year, data } = JSON.parse(cached);
+      if (year === new Date().getFullYear()) return data;
+    } catch (_) {}
+  }
+  const res = await fetch(url);
+  const data = await res.json();
+  localStorage.setItem(cacheKey, JSON.stringify({ year: new Date().getFullYear(), data }));
+  return data;
+}
+
+async function loadData() {
+  const year = new Date().getFullYear();
+  const [holidays, bridgeDays] = await Promise.all([
+    fetchWithCache(`/api/holidays?year=${year}`, `holidays_${year}`),
+    fetchWithCache(`/api/bridge-days?year=${year}`, `bridgeDays_${year}`),
+  ]);
+
+  state.holidaySet = new Set(holidays.map(h => h.date));
+  state.bridgeDaySet = new Set(bridgeDays.map(h => h.date));
+
+  const midsommarEntry = holidays.find(h => h.code === 'midsummerEve');
+  state.midsommar = midsommarEntry ? new Date(midsommarEntry.date + 'T00:00:00') : null;
+  state.fallStart = firstMondayOfAugust(year);
+  state.loaded = true;
+}
+
+// ─────────────────────────────────────────────────────────────────────────────
+// DOM & Animation
+// ─────────────────────────────────────────────────────────────────────────────
+
+function buildDOM() {
+  const container = document.getElementById('cards');
+  CARDS.forEach(({ id, label }) => {
+    const card = document.createElement('div');
+    card.className = 'card';
+    card.id = `card-${id}`;
+
+    const canvas = document.createElement('canvas');
+    card.appendChild(canvas);
+
+    const content = document.createElement('div');
+    content.className = 'card-content';
+    content.innerHTML = `
+      <span class="card-name">${label}</span>
+      <span class="card-remaining"></span>
+    `;
+    card.appendChild(content);
+    container.appendChild(card);
+  });
+}
+
+function initParticleFields() {
+  const fields = {};
+  CARDS.forEach(({ id }, i) => {
+    const card = document.getElementById(`card-${id}`);
+    const canvas = card.querySelector('canvas');
+    // Trigger initial resize
+    const rect = card.getBoundingClientRect();
+    canvas.width = rect.width * devicePixelRatio;
+    canvas.height = rect.height * devicePixelRatio;
+    canvas.style.width = rect.width + 'px';
+    canvas.style.height = rect.height + 'px';
+    fields[id] = new ParticleField(canvas, i + 1);
+  });
+  return fields;
+}
+
+let particleFields = null;
+
+function tick(ts) {
+  const now = new Date();
+  CARDS.forEach(({ id, label }) => {
+    const { progress, remainingLabel, cardState } = getCardState(id, now);
+    const card = document.getElementById(`card-${id}`);
+
+    // Update card state class
+    card.className = `card state-${cardState}`;
+
+    // Update text
+    card.querySelector('.card-remaining').textContent = remainingLabel;
+
+    // Update particles
+    particleFields[id].update(progress, cardState);
+    particleFields[id].draw(ts);
+  });
+
+  requestAnimationFrame(tick);
+}
+
+function setupToggles() {
+  const workModeEl = document.getElementById('workMode');
+  const bridgeDaysEl = document.getElementById('bridgeDays');
+  const bridgeDaysLabel = document.getElementById('bridgeDaysLabel');
+
+  workModeEl.addEventListener('change', () => {
+    state.workMode = workModeEl.checked;
+    bridgeDaysLabel.classList.toggle('visible', state.workMode);
+    if (!state.workMode) {
+      bridgeDaysEl.checked = false;
+      state.includeBridgeDays = false;
+    }
+  });
+
+  bridgeDaysEl.addEventListener('change', () => {
+    state.includeBridgeDays = bridgeDaysEl.checked;
+  });
+}
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Init
+// ─────────────────────────────────────────────────────────────────────────────
+
+async function init() {
+  // Show loading indicator
+  const loadingEl = document.createElement('div');
+  loadingEl.id = 'loading';
+  loadingEl.textContent = 'loading';
+  document.body.appendChild(loadingEl);
+
+  buildDOM();
+  setupToggles();
+
+  await loadData();
+
+  particleFields = initParticleFields();
+
+  loadingEl.classList.add('hidden');
+  setTimeout(() => loadingEl.remove(), 600);
+
+  requestAnimationFrame(tick);
+}
+
+init();
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>Aftersummer</title>
+  <link rel="preconnect" href="https://fonts.googleapis.com">
+  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
+  <link href="https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500&display=swap" rel="stylesheet">
+  <link rel="stylesheet" href="style.css">
+</head>
+<body>
+  <header>
+    <div class="toggles">
+      <label class="toggle" id="workModeLabel">
+        <input type="checkbox" id="workMode">
+        <span class="track"></span>
+        <span class="toggle-label">Work time</span>
+      </label>
+      <label class="toggle" id="bridgeDaysLabel">
+        <input type="checkbox" id="bridgeDays">
+        <span class="track"></span>
+        <span class="toggle-label">Bridge days</span>
+      </label>
+    </div>
+  </header>
+  <main id="cards"></main>
+  <script type="module" src="app.js"></script>
+</body>
+</html>
@@ -0,0 +1,190 @@
+*, *::before, *::after {
+  box-sizing: border-box;
+  margin: 0;
+  padding: 0;
+}
+
+:root {
+  --bg: #f7f6f2;
+  --border: rgba(0, 0, 0, 0.07);
+  --text: #1a1a1a;
+  --text-muted: #aaa;
+  --text-secondary: #666;
+  --header-height: 52px;
+}
+
+html, body {
+  height: 100%;
+  background: var(--bg);
+  font-family: 'Inter', system-ui, sans-serif;
+  font-weight: 300;
+  color: var(--text);
+  overflow: hidden;
+}
+
+/* ── Header ─────────────────────────────────────── */
+header {
+  height: var(--header-height);
+  display: flex;
+  align-items: center;
+  justify-content: flex-end;
+  padding: 0 32px;
+  border-bottom: 1px solid var(--border);
+}
+
+.toggles {
+  display: flex;
+  gap: 28px;
+  align-items: center;
+}
+
+.toggle {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  cursor: pointer;
+  user-select: none;
+}
+
+.toggle input {
+  display: none;
+}
+
+.track {
+  position: relative;
+  width: 40px;
+  height: 22px;
+  background: #ddd;
+  border-radius: 11px;
+  transition: background 0.2s ease;
+  flex-shrink: 0;
+}
+
+.track::after {
+  content: '';
+  position: absolute;
+  width: 16px;
+  height: 16px;
+  background: white;
+  border-radius: 50%;
+  top: 3px;
+  left: 3px;
+  transition: left 0.2s ease;
+  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
+}
+
+.toggle input:checked + .track {
+  background: #1a1a1a;
+}
+
+.toggle input:checked + .track::after {
+  left: 21px;
+}
+
+.toggle-label {
+  font-size: 12px;
+  letter-spacing: 0.04em;
+  color: var(--text-secondary);
+}
+
+#bridgeDaysLabel {
+  opacity: 0;
+  pointer-events: none;
+  transition: opacity 0.2s ease;
+}
+
+#bridgeDaysLabel.visible {
+  opacity: 1;
+  pointer-events: all;
+}
+
+/* ── Cards ───────────────────────────────────────── */
+#cards {
+  height: calc(100vh - var(--header-height));
+  display: flex;
+  flex-direction: column;
+}
+
+.card {
+  position: relative;
+  flex: 1;
+  border-bottom: 1px solid var(--border);
+  overflow: hidden;
+}
+
+.card:last-child {
+  border-bottom: none;
+}
+
+.card canvas {
+  position: absolute;
+  inset: 0;
+  width: 100%;
+  height: 100%;
+}
+
+.card-content {
+  position: absolute;
+  inset: 0;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 0 32px;
+  pointer-events: none;
+}
+
+.card-name {
+  font-size: 11px;
+  font-weight: 400;
+  letter-spacing: 0.12em;
+  text-transform: uppercase;
+  color: var(--text-muted);
+  transition: color 0.4s ease;
+}
+
+.card-remaining {
+  font-size: 13px;
+  font-weight: 300;
+  color: var(--text-secondary);
+  transition: color 0.4s ease;
+}
+
+/* State variants */
+.card.state-not-work-time .card-name,
+.card.state-not-work-time .card-remaining {
+  color: #ccc;
+}
+
+.card.state-summer .card-name {
+  color: #c4902a;
+}
+
+.card.state-summer .card-remaining {
+  color: #c4902a;
+  opacity: 0.8;
+}
+
+.card.state-off-season .card-name,
+.card.state-off-season .card-remaining {
+  color: #b0b8c8;
+}
+
+/* Loading state */
+#loading {
+  position: fixed;
+  inset: 0;
+  background: var(--bg);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-size: 12px;
+  letter-spacing: 0.08em;
+  color: var(--text-muted);
+  z-index: 100;
+  transition: opacity 0.5s ease;
+}
+
+#loading.hidden {
+  opacity: 0;
+  pointer-events: none;
+}
@@ -0,0 +1,33 @@
+import express from 'express';
+import { fileURLToPath } from 'url';
+import { dirname, join } from 'path';
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const app = express();
+
+app.use(express.static(join(__dirname, 'public')));
+
+app.get('/api/holidays', async (req, res) => {
+  const { year } = req.query;
+  try {
+    const response = await fetch(`https://api.dagsmart.se/holidays?year=${year}&weekends=false`);
+    const data = await response.json();
+    res.json(data);
+  } catch (err) {
+    res.status(500).json({ error: String(err) });
+  }
+});
+
+app.get('/api/bridge-days', async (req, res) => {
+  const { year } = req.query;
+  try {
+    const response = await fetch(`https://api.dagsmart.se/bridge-days?year=${year}`);
+    const data = await response.json();
+    res.json(data);
+  } catch (err) {
+    res.status(500).json({ error: String(err) });
+  }
+});
+
+const PORT = process.env.PORT || 3000;
+app.listen(PORT, () => console.log(`Aftersummer → http://localhost:${PORT}`));