From 570e44257fb263e371ff6869042758d3e7845540 Mon Sep 17 00:00:00 2001
From: ulfrxdev <r.rafal.r9@gmail.com>
Date: Mon, 20 Apr 2026 11:33:43 +0200
Subject: [PATCH] Swipeable calendar

---
 index.html                    |   2 +-
 js/ui/mealCalendar.js         | 222 ++++++++++++++++++--
 js/ui/mealPlanEditor.js       |  52 +++--
 js/ui/swipePopoverCalendar.js | 377 ++++++++++++++++++++++++++++++++++
 js/views/MealPlanner.js       | 233 ++++++++++++++++-----
 js/views/Pantry.js            | 124 ++++-------
 js/views/ShoppingList.js      | 216 +++++++------------
 7 files changed, 919 insertions(+), 307 deletions(-)
 create mode 100644 js/ui/swipePopoverCalendar.js

diff --git a/index.html b/index.html
index dd088e4..0cfac60 100644
--- a/index.html
+++ b/index.html
@@ -682,7 +682,7 @@
     </div>
 
     <script>
-        const APP_ASSET_VERSION = '20260417-svg6';
+        const APP_ASSET_VERSION = '20260417-svg7';
         const APP_VERSION_STORAGE_KEY = 'recipe-app-asset-version';
         const APP_VERSION_QUERY_KEY = 'appv';
 
diff --git a/js/ui/mealCalendar.js b/js/ui/mealCalendar.js
index 12b6c7c..f68b504 100644
--- a/js/ui/mealCalendar.js
+++ b/js/ui/mealCalendar.js
@@ -114,29 +114,20 @@ export function createCalendarWeekdayHeaderHTML(labels = CALENDAR_WEEKDAYS_SHORT
 }
 
 export function createCalendarTopbarHTML({
-    prevId,
     todayId,
-    nextId,
     wrapperClass = 'px-4 pt-4 pb-3 flex items-center justify-end',
     controlsStyle = 'background:rgb(var(--card-soft-rgb));border-color:rgb(var(--card-strong-rgb));',
-    navButtonClass = 'shrink-0 w-7 h-full flex items-center justify-center rounded-full border-0 bg-transparent text-[rgb(var(--text-body-soft-rgb))] transition-colors',
-    todayButtonActiveClass = 'h-full shrink-0 inline-flex min-w-[5.75rem] max-w-[9rem] items-center justify-center rounded-full bg-transparent px-1.5 text-[10px] font-semibold leading-none tabular-nums text-[rgb(var(--text-body-soft-rgb))] active:bg-transparent whitespace-nowrap',
-    todayButtonDimClass = 'h-full shrink-0 inline-flex items-center justify-center rounded-full px-2 text-[10px] font-semibold leading-none text-[rgb(var(--text-faint-rgb))] cursor-default',
+    todayButtonActiveClass = 'h-full shrink-0 inline-flex min-w-[5.75rem] max-w-[9rem] items-center justify-center rounded-full bg-transparent px-3 text-[10px] font-semibold leading-none tabular-nums text-[rgb(var(--text-body-soft-rgb))] active:bg-transparent whitespace-nowrap',
+    todayButtonDimClass = 'h-full shrink-0 inline-flex items-center justify-center rounded-full px-3 text-[10px] font-semibold leading-none text-[rgb(var(--text-faint-rgb))] cursor-default',
 }) {
     return `
         <div class="${wrapperClass}">
-            <div class="flex h-[2.05rem] min-w-0 max-w-[min(100%,20rem)] items-center gap-px rounded-full border px-0.5" style="${controlsStyle}">
-                <button type="button" id="${prevId}" class="${navButtonClass}" aria-label="Poprzedni okres">
-                    <i class="fas fa-chevron-left text-[10px]" aria-hidden="true"></i>
-                </button>
+            <div class="flex h-[2.05rem] min-w-0 max-w-[min(100%,20rem)] items-center justify-center rounded-full border" style="${controlsStyle}">
                 <button type="button" id="${todayId}"
                         class="${todayButtonActiveClass}"
                         data-cal-active-class="${todayButtonActiveClass}"
                         data-cal-dim-class="${todayButtonDimClass}">
                 </button>
-                <button type="button" id="${nextId}" class="${navButtonClass}" aria-label="Następny okres">
-                    <i class="fas fa-chevron-right text-[10px]" aria-hidden="true"></i>
-                </button>
             </div>
         </div>
     `;
@@ -168,7 +159,7 @@ export function syncCalendarTodayButton(buttonEl, isOnToday, selectedDate, optio
         ariaLabelCurrent = 'Widok jest ustawiony na bieżący okres',
     } = options;
     const active = buttonEl.dataset.calActiveClass
-        || 'h-full shrink-0 inline-flex min-w-[5.75rem] max-w-[9rem] items-center justify-center rounded-full bg-transparent px-1.5 text-[10px] font-semibold leading-none tabular-nums text-[rgb(var(--text-body-soft-rgb))] active:bg-transparent whitespace-nowrap';
+        || 'h-full shrink-0 inline-flex min-w-[5.75rem] max-w-[9rem] items-center justify-center rounded-full bg-transparent px-3 text-[10px] font-semibold leading-none tabular-nums text-[rgb(var(--text-body-soft-rgb))] active:bg-transparent whitespace-nowrap';
     if (selectedDate != null) {
         buttonEl.textContent = formatCalendarSelectedDate(selectedDate);
     }
@@ -275,3 +266,208 @@ export function bindCalendarDayClicks(containerEl, onSelect, dayAttr = CALENDAR_
         onSelect(new Date(ts), button, event);
     });
 }
+
+/**
+ * Binds a carousel-style horizontal swipe on zoneEl. Swipe right → onPrev,
+ * swipe left → onNext. Pass `renderGhost(ghostGridEl, direction)` to render
+ * adjacent periods that appear alongside the zone during the gesture. The
+ * callback can return `false` to block that direction (ghost not added).
+ * Returns an unbind function.
+ */
+export function bindCalendarHorizontalSwipe(zoneEl, {
+    onPrev,
+    onNext,
+    renderGhost,
+    threshold = 40,
+    animationMs = 260,
+} = {}) {
+    if (!zoneEl) return () => {};
+
+    let ptrId = null;
+    let startX = 0;
+    let startY = 0;
+    let moved = false;
+    let axisLocked = null;
+    let suppressClickUntil = 0;
+    let animatingNav = false;
+
+    let wrapWidth = 0;
+    let prevGhost = null;
+    let nextGhost = null;
+    let savedStyles = null;
+    let carouselActive = false;
+
+    const prevTouchAction = zoneEl.style.touchAction;
+    const prevUserSelect = zoneEl.style.userSelect;
+    zoneEl.style.touchAction = 'pan-y';
+    zoneEl.style.userSelect = 'none';
+
+    const buildGhost = (direction) => {
+        if (typeof renderGhost !== 'function') return null;
+        const ghost = zoneEl.cloneNode(false);
+        ghost.removeAttribute('id');
+        ghost.style.position = 'absolute';
+        ghost.style.top = '0';
+        ghost.style.width = '100%';
+        ghost.style.pointerEvents = 'none';
+        ghost.setAttribute('aria-hidden', 'true');
+        let ok = true;
+        try {
+            const res = renderGhost(ghost, direction);
+            if (res === false) ok = false;
+        } catch (_) { ok = false; }
+        return ok ? ghost : null;
+    };
+
+    const activateCarousel = () => {
+        if (typeof renderGhost !== 'function') return;
+        wrapWidth = zoneEl.getBoundingClientRect().width;
+        if (wrapWidth <= 0) return;
+        const parentEl = zoneEl.parentElement;
+        savedStyles = {
+            position: zoneEl.style.position,
+            overflow: zoneEl.style.overflow,
+            parentEl,
+            parentOverflow: parentEl ? parentEl.style.overflow : '',
+        };
+        zoneEl.style.position = 'relative';
+        zoneEl.style.overflow = 'visible';
+        if (parentEl) parentEl.style.overflow = 'hidden';
+
+        prevGhost = buildGhost('prev');
+        if (prevGhost) {
+            prevGhost.style.left = `-${wrapWidth}px`;
+            zoneEl.appendChild(prevGhost);
+        }
+        nextGhost = buildGhost('next');
+        if (nextGhost) {
+            nextGhost.style.left = `${wrapWidth}px`;
+            zoneEl.appendChild(nextGhost);
+        }
+
+        zoneEl.style.willChange = 'transform';
+        zoneEl.style.transition = 'none';
+        carouselActive = true;
+    };
+
+    const clearCarousel = () => {
+        if (prevGhost?.parentNode) prevGhost.parentNode.removeChild(prevGhost);
+        if (nextGhost?.parentNode) nextGhost.parentNode.removeChild(nextGhost);
+        prevGhost = null;
+        nextGhost = null;
+        if (savedStyles) {
+            zoneEl.style.position = savedStyles.position;
+            zoneEl.style.overflow = savedStyles.overflow;
+            if (savedStyles.parentEl) savedStyles.parentEl.style.overflow = savedStyles.parentOverflow;
+            savedStyles = null;
+        }
+        zoneEl.style.transition = '';
+        zoneEl.style.transform = '';
+        zoneEl.style.willChange = '';
+        carouselActive = false;
+    };
+
+    const setTranslate = (x, ms) => {
+        zoneEl.style.transition = ms ? `transform ${ms}ms ease` : 'none';
+        zoneEl.style.transform = `translate3d(${x}px, 0, 0)`;
+    };
+
+    const onDown = (e) => {
+        if (ptrId !== null || animatingNav) return;
+        if (e.pointerType === 'mouse' && e.button !== 0) return;
+        startX = e.clientX;
+        startY = e.clientY;
+        ptrId = e.pointerId;
+        moved = false;
+        axisLocked = null;
+        try { zoneEl.setPointerCapture(e.pointerId); } catch (_) {}
+        if (e.pointerType === 'mouse') e.preventDefault();
+    };
+
+    const onMove = (e) => {
+        if (e.pointerId !== ptrId) return;
+        const dx = e.clientX - startX;
+        const dy = e.clientY - startY;
+        if (!moved && (Math.abs(dx) > 6 || Math.abs(dy) > 6)) {
+            moved = true;
+            axisLocked = Math.abs(dx) >= Math.abs(dy) ? 'x' : 'y';
+            if (axisLocked === 'x') activateCarousel();
+        }
+        if (axisLocked === 'x' && carouselActive) {
+            let tx = dx;
+            if (dx > 0 && !prevGhost) tx = dx * 0.15;
+            if (dx < 0 && !nextGhost) tx = dx * 0.15;
+            setTranslate(tx, 0);
+        }
+    };
+
+    const onUp = (e) => {
+        if (e.pointerId !== ptrId) return;
+        const dx = e.clientX - startX;
+        ptrId = null;
+
+        if (!moved || axisLocked !== 'x' || !carouselActive) {
+            if (carouselActive) {
+                setTranslate(0, animationMs);
+                setTimeout(clearCarousel, animationMs + 20);
+            }
+            return;
+        }
+
+        const directionGhost = dx > 0 ? prevGhost : nextGhost;
+        const handler = dx > 0 ? onPrev : onNext;
+        const passes = Math.abs(dx) >= threshold
+            && directionGhost
+            && typeof handler === 'function';
+
+        if (!passes) {
+            setTranslate(0, animationMs);
+            setTimeout(clearCarousel, animationMs + 20);
+            return;
+        }
+
+        suppressClickUntil = performance.now() + 500;
+        animatingNav = true;
+        const targetX = dx > 0 ? wrapWidth : -wrapWidth;
+        setTranslate(targetX, animationMs);
+        setTimeout(() => {
+            clearCarousel();
+            handler();
+            animatingNav = false;
+        }, animationMs);
+    };
+
+    const onClickCapture = (ev) => {
+        if (performance.now() < suppressClickUntil) {
+            ev.stopPropagation();
+            ev.preventDefault();
+            suppressClickUntil = 0;
+        }
+    };
+
+    const onCancel = () => {
+        ptrId = null;
+        moved = false;
+        if (carouselActive) {
+            setTranslate(0, animationMs);
+            setTimeout(clearCarousel, animationMs + 20);
+        }
+    };
+
+    zoneEl.addEventListener('pointerdown', onDown);
+    zoneEl.addEventListener('pointermove', onMove);
+    zoneEl.addEventListener('pointerup', onUp);
+    zoneEl.addEventListener('pointercancel', onCancel);
+    zoneEl.addEventListener('click', onClickCapture, { capture: true });
+
+    return () => {
+        zoneEl.removeEventListener('pointerdown', onDown);
+        zoneEl.removeEventListener('pointermove', onMove);
+        zoneEl.removeEventListener('pointerup', onUp);
+        zoneEl.removeEventListener('pointercancel', onCancel);
+        zoneEl.removeEventListener('click', onClickCapture, { capture: true });
+        zoneEl.style.touchAction = prevTouchAction;
+        zoneEl.style.userSelect = prevUserSelect;
+        if (carouselActive) clearCarousel();
+    };
+}
diff --git a/js/ui/mealPlanEditor.js b/js/ui/mealPlanEditor.js
index 7364097..453a5c7 100644
--- a/js/ui/mealPlanEditor.js
+++ b/js/ui/mealPlanEditor.js
@@ -18,12 +18,13 @@ import { dayHasAnyMeal, autoSelectProducts, saveLastProductSelection } from '../
 import { loadPantry } from '../services/pantryShopping.js?v=2';
 import {
     bindCalendarDayClicks,
+    bindCalendarHorizontalSwipe,
     createCalendarTopbarHTML,
     createCalendarWeekdayHeaderHTML,
     isCalendarOnToday,
     renderCalendarGrid,
     syncCalendarTodayButton,
-} from './mealCalendar.js?v=11';
+} from './mealCalendar.js?v=14';
 import { createIngredientCardController, getIngredientCardHTML } from './ingredientCard.js?v=20260417-116';
 
 function esc(s) {
@@ -54,9 +55,7 @@ export function getMealPlanEditorHTML() {
             <div id="mpe-cal-wrap" class="hidden relative z-[1] shrink-0 px-5 pt-3 pb-3 bg-[rgb(var(--app-bg-rgb))]" style="background:rgb(var(--app-bg-rgb)) !important; background-image:none !important;">
                 <div id="mpe-cal-section" class="hidden">
                     ${createCalendarTopbarHTML({
-        prevId: 'mpe-cal-prev',
         todayId: 'mpe-cal-today',
-        nextId: 'mpe-cal-next',
         wrapperClass: 'mb-2 flex items-center justify-end gap-3',
     })}
                     ${createCalendarWeekdayHeaderHTML()}
@@ -618,15 +617,44 @@ export function setupMealPlanEditor() {
         renderCal();
     });
 
-    document.getElementById('mpe-cal-prev')?.addEventListener('click', () => {
-        if (!S.showCal) return;
-        S.calDate = S.calExpanded ? addMonths(S.calDate, -1) : addDays(S.calDate, -7);
-        renderCal();
-    });
-    document.getElementById('mpe-cal-next')?.addEventListener('click', () => {
-        if (!S.showCal) return;
-        S.calDate = S.calExpanded ? addMonths(S.calDate, 1) : addDays(S.calDate, 7);
-        renderCal();
+    bindCalendarHorizontalSwipe(document.getElementById('mpe-cal-grid'), {
+        onPrev: () => {
+            if (!S.showCal) return;
+            S.calDate = S.calExpanded ? addMonths(S.calDate, -1) : addDays(S.calDate, -7);
+            renderCal();
+        },
+        onNext: () => {
+            if (!S.showCal) return;
+            S.calDate = S.calExpanded ? addMonths(S.calDate, 1) : addDays(S.calDate, 7);
+            renderCal();
+        },
+        renderGhost: (ghostGrid, direction) => {
+            if (!S.showCal) return false;
+            const sign = direction === 'prev' ? -1 : 1;
+            const mode = S.calExpanded ? 'month' : 'week';
+            const anchor = S.calExpanded
+                ? addMonths(S.calDate, sign)
+                : addDays(S.calDate, 7 * sign);
+            const today = startOfDay(new Date());
+            const plans = loadPlans();
+            renderCalendarGrid({
+                gridEl: ghostGrid,
+                mode,
+                anchorDate: anchor,
+                selectedDate: S.date,
+                resolveDayState: (day, meta) => {
+                    const isSelected = S.date && sameDay(day, S.date);
+                    const isPast = day.getTime() < today.getTime();
+                    return {
+                        disabled: isPast && !isSelected,
+                        dimmed: (isPast || (meta.mode === 'month' && !meta.inCurrentMonth)) && !isSelected,
+                        showIndicator: meta.mode === 'month'
+                            ? meta.inCurrentMonth && dayHasAnyMeal(plans, day)
+                            : dayHasAnyMeal(plans, day),
+                    };
+                },
+            });
+        },
     });
     document.getElementById('mpe-cal-today')?.addEventListener('click', () => {
         const today = startOfDay(new Date());
diff --git a/js/ui/swipePopoverCalendar.js b/js/ui/swipePopoverCalendar.js
new file mode 100644
index 0000000..acce50d
--- /dev/null
+++ b/js/ui/swipePopoverCalendar.js
@@ -0,0 +1,377 @@
+import { addDays, startOfMonth, startOfWeekMonday } from '../services/dateUtils.js';
+
+const DEFAULT_WEEKDAYS = ['pn', 'wt', 'śr', 'cz', 'pt', 'sb', 'nd'];
+const DEFAULT_MONTHS_LONG = [
+    'Styczeń', 'Luty', 'Marzec', 'Kwiecień', 'Maj', 'Czerwiec',
+    'Lipiec', 'Sierpień', 'Wrzesień', 'Październik', 'Listopad', 'Grudzień',
+];
+
+const DEFAULT_THEME = {
+    selectedBg: 'rgb(var(--card-rgb))',
+    selectedBorder: 'rgb(var(--border-input-rgb))',
+    selectedText: 'rgb(var(--text-emphasis-rgb))',
+    selectedDot: 'rgb(var(--text-emphasis-rgb))',
+    bg: 'rgb(var(--app-bg-rgb))',
+    border: 'rgb(var(--card-raised-rgb))',
+    text: 'rgb(var(--text-body-soft-rgb))',
+    dimmedBg: 'transparent',
+    dimText: 'rgb(var(--text-faint-rgb))',
+    dimOpacity: 0.58,
+    dot: 'rgb(var(--text-faint-rgb))',
+};
+
+function dateKeyLocal(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}-${d}`;
+}
+
+function keyToDate(key) {
+    return new Date(`${key}T00:00:00`);
+}
+
+function normalizeMonth(date) {
+    return startOfMonth(date instanceof Date ? date : new Date());
+}
+
+function monthLabel(date, monthsLong) {
+    return `${monthsLong[date.getMonth()]} ${date.getFullYear()}`;
+}
+
+function dayRange(aKey, bKey) {
+    const a = keyToDate(aKey);
+    const b = keyToDate(bKey);
+    const [from, to] = a <= b ? [a, b] : [b, a];
+    const out = [];
+    for (let d = new Date(from); d <= to; d = addDays(d, 1)) out.push(dateKeyLocal(d));
+    return out;
+}
+
+export function createSwipePopoverCalendarHTML({
+    idPrefix,
+    weekdays = DEFAULT_WEEKDAYS,
+    monthLabelTextClass = 'text-[10px] font-semibold leading-none tabular-nums whitespace-nowrap',
+}) {
+    const weekdayHeader = `
+        <div class="grid grid-cols-7 gap-1.5 text-center text-[8px] font-medium uppercase tracking-wide mb-1 leading-none" style="color:rgb(var(--text-dim-rgb));">
+            ${weekdays.map((d) => `<div>${d}</div>`).join('')}
+        </div>
+    `;
+    const gripLeft = `
+        <div data-swc-grip aria-hidden="true" style="position:absolute; left:0; top:50%; transform:translateY(-50%); width:0.76rem; height:1rem; pointer-events:none; opacity:0.66;">
+            <span style="position:absolute; left:0; top:50%; transform:translateY(-50%); width:1.5px; height:1.22rem; border-radius:999px; background:rgba(var(--text-faint-rgb),0.84);"></span>
+            <span style="position:absolute; left:0.16rem; top:50%; transform:translateY(-50%); width:1.5px; height:1.0rem; border-radius:999px; background:rgba(var(--text-faint-rgb),0.74);"></span>
+            <span style="position:absolute; left:0.34rem; top:50%; transform:translateY(-50%); width:1.5px; height:0.56rem; border-radius:999px; background:rgba(var(--text-faint-rgb),0.62);"></span>
+        </div>
+    `;
+    const gripRight = `
+        <div data-swc-grip aria-hidden="true" style="position:absolute; right:0; top:50%; transform:translateY(-50%); width:0.76rem; height:1rem; pointer-events:none; opacity:0.66;">
+            <span style="position:absolute; right:0; top:50%; transform:translateY(-50%); width:1.5px; height:1.22rem; border-radius:999px; background:rgba(var(--text-faint-rgb),0.84);"></span>
+            <span style="position:absolute; right:0.16rem; top:50%; transform:translateY(-50%); width:1.5px; height:1.0rem; border-radius:999px; background:rgba(var(--text-faint-rgb),0.74);"></span>
+            <span style="position:absolute; right:0.34rem; top:50%; transform:translateY(-50%); width:1.5px; height:0.56rem; border-radius:999px; background:rgba(var(--text-faint-rgb),0.62);"></span>
+        </div>
+    `;
+
+    return `
+        <div class="pb-3 px-3 flex items-center justify-end gap-3">
+            <div class="flex h-[2.05rem] min-w-0 max-w-[min(100%,20rem)] items-center justify-center rounded-full border" style="background:rgb(var(--app-bg-rgb)); border-color:rgb(var(--card-raised-rgb));">
+                <span id="${idPrefix}-month-label" class="h-full shrink-0 inline-flex min-w-[5.75rem] max-w-[9rem] items-center justify-center px-3 ${monthLabelTextClass}" style="color:rgb(var(--text-body-soft-rgb));"></span>
+            </div>
+        </div>
+        <div id="${idPrefix}-viewport" style="overflow:hidden; position:relative; touch-action:pan-y;">
+            <div id="${idPrefix}-track" style="display:flex; align-items:flex-start; position:relative; will-change:transform;">
+                <div class="swc-panel" data-panel="prev" style="flex-shrink:0; pointer-events:none; position:relative; overflow:hidden;">
+                    ${weekdayHeader}
+                    <div id="${idPrefix}-prev-grid" class="grid grid-cols-7 gap-1.5"></div>
+                    ${gripLeft}
+                    ${gripRight}
+                </div>
+                <div class="swc-panel" data-panel="current" style="flex-shrink:0; position:relative; overflow:hidden;">
+                    ${weekdayHeader}
+                    <div id="${idPrefix}-grid" class="grid grid-cols-7 gap-1.5"></div>
+                    ${gripLeft}
+                    ${gripRight}
+                </div>
+                <div class="swc-panel" data-panel="next" style="flex-shrink:0; pointer-events:none; position:relative; overflow:hidden;">
+                    ${weekdayHeader}
+                    <div id="${idPrefix}-next-grid" class="grid grid-cols-7 gap-1.5"></div>
+                    ${gripLeft}
+                    ${gripRight}
+                </div>
+            </div>
+        </div>
+    `;
+}
+
+export function initSwipePopoverCalendar({
+    idPrefix,
+    selectionMode = 'single',
+    monthsLong = DEFAULT_MONTHS_LONG,
+    theme = DEFAULT_THEME,
+    getMonthAnchor,
+    setMonthAnchor,
+    getSelectionKeys,
+    onSelectionCommit,
+    resolveDayState,
+    panelHandlePx = null,
+    panelHandleRatio = 0.045,
+    panelHandleMin = 10,
+    panelHandleMax = 16,
+}) {
+    const monthLabelEl = document.getElementById(`${idPrefix}-month-label`);
+    const gridEl = document.getElementById(`${idPrefix}-grid`);
+    const prevGridEl = document.getElementById(`${idPrefix}-prev-grid`);
+    const nextGridEl = document.getElementById(`${idPrefix}-next-grid`);
+    const track = document.getElementById(`${idPrefix}-track`);
+    const viewport = document.getElementById(`${idPrefix}-viewport`);
+    if (!gridEl || !track || !viewport) {
+        return {
+            render: () => {},
+            reapplyLayout: () => {},
+            resetTrackPosition: () => {},
+        };
+    }
+
+    const MOVE_THRESHOLD = 6;
+    const SWIPE_THRESHOLD = 40;
+    const ANIMATION_MS = 260;
+
+    let viewportWidth = 0;
+    let panelWidth = 0;
+    let panelHandle = 0;
+    let dragHandleWidth = 0;
+    let restOffset = 0;
+    let animatingNav = false;
+
+    const panels = Array.from(track.querySelectorAll('.swc-panel'));
+
+    const syncGripVisibility = (showAdjacent = false) => {
+        panels.forEach((panel) => {
+            const isCurrent = panel.dataset.panel === 'current';
+            panel.querySelectorAll('[data-swc-grip]').forEach((grip) => {
+                grip.style.opacity = (isCurrent || showAdjacent) ? '0.66' : '0';
+            });
+        });
+    };
+
+    const applyLayout = () => {
+        const vw = viewport.clientWidth || viewport.getBoundingClientRect().width;
+        if (!vw) return;
+        viewportWidth = vw;
+        const computedHandle = panelHandlePx == null
+            ? Math.round(vw * panelHandleRatio)
+            : panelHandlePx;
+        panelHandle = Math.max(panelHandleMin, Math.min(panelHandleMax, computedHandle));
+        dragHandleWidth = panelHandle;
+        panelWidth = vw;
+        restOffset = -panelWidth;
+        panels.forEach((panel) => {
+            panel.style.width = `${panelWidth}px`;
+            panel.style.boxSizing = 'border-box';
+            panel.style.paddingLeft = `${panelHandle}px`;
+            panel.style.paddingRight = `${panelHandle}px`;
+        });
+        track.style.transition = 'none';
+        track.style.transform = `translate3d(${restOffset}px, 0, 0)`;
+        syncGripVisibility(false);
+    };
+
+    const resetTrackPosition = () => {
+        track.style.transition = 'none';
+        track.style.transform = `translate3d(${restOffset}px, 0, 0)`;
+        syncGripVisibility(false);
+    };
+
+    const setDragTranslate = (dx, ms) => {
+        track.style.transition = ms ? `transform ${ms}ms ease` : 'none';
+        track.style.transform = `translate3d(${restOffset + dx}px, 0, 0)`;
+    };
+
+    const getSelectedSet = (previewSelection = null) => {
+        const raw = previewSelection ?? getSelectionKeys();
+        if (Array.isArray(raw)) return new Set(raw);
+        if (typeof raw === 'string' && raw) return new Set([raw]);
+        return new Set();
+    };
+
+    const renderMonthGrid = (targetGrid, monthAnchor, selectedSet) => {
+        if (!targetGrid) return;
+        const first = startOfMonth(monthAnchor);
+        const gridStart = startOfWeekMonday(first);
+        const cells = Array.from({ length: 42 }, (_, i) => addDays(gridStart, i));
+        targetGrid.innerHTML = cells.map((day) => {
+            const dk = dateKeyLocal(day);
+            const inCurrentMonth = day.getMonth() === first.getMonth();
+            const isSelected = selectedSet.has(dk);
+            const resolved = (typeof resolveDayState === 'function'
+                ? resolveDayState(day, { inCurrentMonth, isSelected })
+                : {}) || {};
+            const disabled = !!resolved.disabled;
+            const dimmed = !!resolved.dimmed;
+            const showDot = !!resolved.showDot;
+
+            let bg;
+            let borderColor;
+            let text;
+            let borderClass = 'border';
+            if (isSelected) {
+                bg = theme.selectedBg;
+                borderColor = theme.selectedBorder;
+                text = theme.selectedText;
+            } else if (dimmed) {
+                bg = theme.dimmedBg;
+                borderColor = 'transparent';
+                text = theme.dimText;
+                borderClass = 'border-0';
+            } else {
+                bg = theme.bg;
+                borderColor = theme.border;
+                text = theme.text;
+            }
+            const opacity = dimmed && !isSelected ? String(theme.dimOpacity ?? 0.58) : '1';
+            const dotColor = isSelected ? theme.selectedDot : theme.dot;
+            const tag = disabled ? 'div' : 'button';
+            const attrs = disabled ? '' : `type="button" data-dk="${dk}"`;
+            const dayClass = disabled ? '' : ' swc-day';
+
+            return `
+                <${tag} ${attrs}
+                    class="mx-auto flex h-[2.05rem] w-full min-w-0 max-w-full items-center justify-center rounded-full ${borderClass}${dayClass} text-xs font-medium leading-tight overflow-hidden"
+                    style="background:${bg}; border-color:${borderColor}; color:${text}; opacity:${opacity}; touch-action:none;">
+                    <span class="relative flex h-full w-full flex-col items-center justify-center">
+                        <span class="text-[13px] font-semibold leading-none ${showDot ? '-translate-y-[0.18rem]' : ''}">${day.getDate()}</span>
+                        ${showDot ? `<span class="absolute left-1/2 w-1 h-1 -translate-x-1/2 rounded-full opacity-75" style="bottom:0.24rem; background:${dotColor};" aria-hidden="true"></span>` : ''}
+                    </span>
+                </${tag}>
+            `;
+        }).join('');
+    };
+
+    const render = (previewSelection = null) => {
+        const anchor = normalizeMonth(getMonthAnchor());
+        const selectedSet = getSelectedSet(previewSelection);
+        if (monthLabelEl) monthLabelEl.textContent = monthLabel(anchor, monthsLong);
+        renderMonthGrid(gridEl, anchor, selectedSet);
+        renderMonthGrid(prevGridEl, new Date(anchor.getFullYear(), anchor.getMonth() - 1, 1), selectedSet);
+        renderMonthGrid(nextGridEl, new Date(anchor.getFullYear(), anchor.getMonth() + 1, 1), selectedSet);
+        applyLayout();
+    };
+
+    const commitNavigation = (monthDelta) => {
+        animatingNav = true;
+        const targetDx = monthDelta < 0 ? panelWidth : -panelWidth;
+        setDragTranslate(targetDx, ANIMATION_MS);
+        setTimeout(() => {
+            const anchor = normalizeMonth(getMonthAnchor());
+            setMonthAnchor(startOfMonth(new Date(anchor.getFullYear(), anchor.getMonth() + monthDelta, 1)));
+            render();
+            resetTrackPosition();
+            animatingNav = false;
+        }, ANIMATION_MS);
+    };
+
+    if (selectionMode === 'range') {
+        let dragStart = null;
+        let dragCurrent = null;
+        let dragging = false;
+        gridEl.addEventListener('pointerdown', (e) => {
+            if (animatingNav) return;
+            const btn = e.target.closest('.swc-day');
+            if (!btn) return;
+            e.stopPropagation();
+            dragStart = btn.dataset.dk;
+            dragCurrent = btn.dataset.dk;
+            dragging = true;
+            gridEl.setPointerCapture(e.pointerId);
+            render([dragStart]);
+        });
+        gridEl.addEventListener('pointermove', (e) => {
+            if (!dragging || animatingNav) return;
+            e.preventDefault();
+            const el = document.elementFromPoint(e.clientX, e.clientY);
+            const btn = el?.closest('.swc-day');
+            if (btn?.dataset.dk && btn.dataset.dk !== dragCurrent) {
+                dragCurrent = btn.dataset.dk;
+                render(dayRange(dragStart, dragCurrent));
+            }
+        });
+        gridEl.addEventListener('pointerup', () => {
+            if (!dragging) return;
+            dragging = false;
+            const range = dayRange(dragStart, dragCurrent);
+            dragStart = null;
+            dragCurrent = null;
+            if (typeof onSelectionCommit === 'function') onSelectionCommit(range);
+            render();
+        });
+        gridEl.addEventListener('pointercancel', () => {
+            dragging = false;
+            dragStart = null;
+            dragCurrent = null;
+            render();
+        });
+    } else {
+        gridEl.addEventListener('click', (e) => {
+            const btn = e.target.closest('.swc-day');
+            if (!btn) return;
+            if (typeof onSelectionCommit === 'function') onSelectionCommit(btn.dataset.dk);
+            render();
+        });
+    }
+
+    let ptrId = null;
+    let startX = 0;
+    let startY = 0;
+    let moved = false;
+    let axis = null;
+
+    viewport.addEventListener('pointerdown', (e) => {
+        if (animatingNav || ptrId !== null) return;
+        if (e.pointerType === 'mouse' && e.button !== 0) return;
+        if (!panelWidth) applyLayout();
+        const rect = viewport.getBoundingClientRect();
+        const localX = e.clientX - rect.left;
+        const inLeft = localX <= dragHandleWidth;
+        const inRight = localX >= (viewportWidth - dragHandleWidth);
+        if (!inLeft && !inRight) return;
+        ptrId = e.pointerId;
+        startX = e.clientX;
+        startY = e.clientY;
+        moved = false;
+        axis = null;
+        try { viewport.setPointerCapture(e.pointerId); } catch (_) {}
+    });
+
+    viewport.addEventListener('pointermove', (e) => {
+        if (e.pointerId !== ptrId || animatingNav) return;
+        const dx = e.clientX - startX;
+        const dy = e.clientY - startY;
+        if (!moved && (Math.abs(dx) > MOVE_THRESHOLD || Math.abs(dy) > MOVE_THRESHOLD)) {
+            moved = true;
+            axis = Math.abs(dx) >= Math.abs(dy) ? 'x' : 'y';
+            if (axis === 'x') syncGripVisibility(true);
+        }
+        if (axis === 'x') setDragTranslate(dx, 0);
+    });
+
+    const endGesture = (e) => {
+        if (e && e.pointerId !== ptrId) return;
+        ptrId = null;
+        if (!moved || axis !== 'x') return;
+        const dx = e ? e.clientX - startX : 0;
+        if (Math.abs(dx) >= SWIPE_THRESHOLD) commitNavigation(dx > 0 ? -1 : 1);
+        else {
+            setDragTranslate(0, ANIMATION_MS);
+            setTimeout(() => syncGripVisibility(false), ANIMATION_MS + 20);
+        }
+        moved = false;
+        axis = null;
+    };
+
+    viewport.addEventListener('pointerup', endGesture);
+    viewport.addEventListener('pointercancel', endGesture);
+    window.addEventListener('resize', applyLayout);
+
+    return { render, reapplyLayout: applyLayout, resetTrackPosition };
+}
diff --git a/js/views/MealPlanner.js b/js/views/MealPlanner.js
index a4d86a3..bb4c9bd 100644
--- a/js/views/MealPlanner.js
+++ b/js/views/MealPlanner.js
@@ -32,10 +32,11 @@ import {
     createCalendarTopbarHTML,
     createCalendarWeekdayHeaderHTML,
     isCalendarOnToday,
+    renderCalendarGrid,
     renderCollapsibleCalendar,
     syncCalendarTodayButton,
     syncCollapsibleCalendarMode,
-} from '../ui/mealCalendar.js?v=11';
+} from '../ui/mealCalendar.js?v=14';
 import {
     filterRecipesByQuery,
     renderRecipeGrid,
@@ -76,9 +77,7 @@ export function getMealPlannerHTML() {
             <div class="min-h-12 px-4 pt-4 pb-3 flex items-center justify-between gap-3 min-w-0">
                 <h1 class="min-w-0 flex-1 truncate" style="margin:0;padding:0;color:rgb(var(--text-emphasis-rgb));font-family:var(--app-font);font-size:18px;font-weight:700;line-height:1.2;letter-spacing:-0.02em;">Plan posiłków</h1>
                 ${createCalendarTopbarHTML({
-        prevId: 'cal-prev',
         todayId: 'cal-go-today',
-        nextId: 'cal-next',
         wrapperClass: 'flex shrink-0 items-center justify-end',
     })}
             </div>
@@ -201,52 +200,214 @@ function bindCalendarSwipeGesture(state, rerender) {
     const zone = document.getElementById('calendar-swipe-zone');
     if (!zone) return;
 
+    const ANIMATION_MS = 260;
+
+    let startX = 0;
     let startY = 0;
     let ptrId = null;
     let moved = false;
+    let axisLocked = null;
+    let suppressClickUntil = 0;
+    let animatingNav = false;
+
+    let dragWrap = null;
+    let wrapWidth = 0;
+    let prevGhost = null;
+    let nextGhost = null;
+    let prevWrapPosition = '';
+    let prevWrapOverflow = '';
+
+    const getActiveWrap = () => document.getElementById(
+        state.mode === 'week' ? 'calendar-week-wrap' : 'calendar-month-wrap',
+    );
+
+    const resolveDayStateForGhost = (day, meta) => {
+        const today = startOfDay(new Date());
+        const isSelected = sameDay(day, state.selected);
+        const isPast = day.getTime() < today.getTime();
+        return {
+            disabled: isPast && !isSelected,
+            dimmed: (isPast || (meta.mode === 'month' && !meta.inCurrentMonth)) && !isSelected,
+            showIndicator: meta.mode === 'month'
+                ? meta.inCurrentMonth && dayHasAnyMeal(state.plans, day)
+                : dayHasAnyMeal(state.plans, day),
+        };
+    };
+
+    const buildGhost = (anchorDate, mode) => {
+        if (!dragWrap) return null;
+        const ghost = dragWrap.cloneNode(true);
+        ghost.removeAttribute('id');
+        ghost.querySelectorAll('[id]').forEach((el) => el.removeAttribute('id'));
+        ghost.style.position = 'absolute';
+        ghost.style.top = '0';
+        ghost.style.width = '100%';
+        ghost.style.pointerEvents = 'none';
+        ghost.setAttribute('aria-hidden', 'true');
+        let ghostGridEl = null;
+        ghost.querySelectorAll('.grid-cols-7').forEach((g) => {
+            if (!g.classList.contains('text-center')) ghostGridEl = g;
+        });
+        if (ghostGridEl) {
+            renderCalendarGrid({
+                gridEl: ghostGridEl,
+                mode,
+                anchorDate,
+                selectedDate: state.selected,
+                resolveDayState: resolveDayStateForGhost,
+            });
+        }
+        return ghost;
+    };
+
+    const activateCarousel = () => {
+        dragWrap = getActiveWrap();
+        if (!dragWrap) return;
+        wrapWidth = dragWrap.getBoundingClientRect().width || zone.getBoundingClientRect().width;
+        prevWrapPosition = dragWrap.style.position;
+        prevWrapOverflow = dragWrap.style.overflow;
+        dragWrap.style.position = 'relative';
+        dragWrap.style.overflow = 'visible';
+
+        const prevAnchor = state.mode === 'week'
+            ? addWeeks(state.weekStart, -1)
+            : addMonths(state.monthAnchor, -1);
+        const nextAnchor = state.mode === 'week'
+            ? addWeeks(state.weekStart, 1)
+            : addMonths(state.monthAnchor, 1);
+
+        prevGhost = buildGhost(prevAnchor, state.mode);
+        nextGhost = buildGhost(nextAnchor, state.mode);
+        if (prevGhost) {
+            prevGhost.style.left = `-${wrapWidth}px`;
+            dragWrap.appendChild(prevGhost);
+        }
+        if (nextGhost) {
+            nextGhost.style.left = `${wrapWidth}px`;
+            dragWrap.appendChild(nextGhost);
+        }
+        dragWrap.style.willChange = 'transform';
+        dragWrap.style.transition = 'none';
+    };
+
+    const clearCarousel = () => {
+        if (prevGhost?.parentNode) prevGhost.parentNode.removeChild(prevGhost);
+        if (nextGhost?.parentNode) nextGhost.parentNode.removeChild(nextGhost);
+        prevGhost = null;
+        nextGhost = null;
+        if (dragWrap) {
+            dragWrap.style.transition = '';
+            dragWrap.style.transform = '';
+            dragWrap.style.willChange = '';
+            dragWrap.style.position = prevWrapPosition;
+            dragWrap.style.overflow = prevWrapOverflow;
+        }
+        dragWrap = null;
+    };
+
+    const setTranslate = (x, ms) => {
+        if (!dragWrap) return;
+        dragWrap.style.transition = ms ? `transform ${ms}ms ease` : 'none';
+        dragWrap.style.transform = `translate3d(${x}px, 0, 0)`;
+    };
 
     zone.addEventListener('pointerdown', (e) => {
-        if (ptrId !== null) return;
+        if (ptrId !== null || animatingNav) return;
+        if (e.pointerType === 'mouse' && e.button !== 0) return;
+        startX = e.clientX;
         startY = e.clientY;
         ptrId = e.pointerId;
         moved = false;
+        axisLocked = null;
+        try { zone.setPointerCapture(e.pointerId); } catch (_) {}
     });
 
     zone.addEventListener('pointermove', (e) => {
         if (e.pointerId !== ptrId) return;
-        if (Math.abs(e.clientY - startY) > 10) moved = true;
+        const dx = e.clientX - startX;
+        const dy = e.clientY - startY;
+        if (!moved && (Math.abs(dx) > 6 || Math.abs(dy) > 6)) {
+            moved = true;
+            axisLocked = Math.abs(dx) >= Math.abs(dy) ? 'x' : 'y';
+            if (axisLocked === 'x') activateCarousel();
+        }
+        if (axisLocked === 'x' && dragWrap) {
+            setTranslate(dx, 0);
+        }
     });
 
     zone.addEventListener('pointerup', (e) => {
         if (e.pointerId !== ptrId) return;
+        const dx = e.clientX - startX;
         const dy = e.clientY - startY;
         ptrId = null;
 
-        if (!moved || Math.abs(dy) < 30) return;
+        if (!moved) return;
 
-        let switched = false;
-        if (state.mode === 'week' && dy > 30) {
-            state.mode = 'month';
-            state.monthAnchor = startOfMonth(state.selected);
-            switched = true;
-        } else if (state.mode === 'month' && dy < -30) {
-            state.mode = 'week';
-            state.weekStart = startOfWeekMonday(state.selected);
-            switched = true;
+        const horizontal = axisLocked === 'x';
+
+        if (horizontal && dragWrap) {
+            if (Math.abs(dx) < 40) {
+                setTranslate(0, ANIMATION_MS);
+                setTimeout(clearCarousel, ANIMATION_MS + 20);
+                return;
+            }
+            suppressClickUntil = performance.now() + 500;
+            animatingNav = true;
+            const targetX = dx > 0 ? wrapWidth : -wrapWidth;
+            setTranslate(targetX, ANIMATION_MS);
+            setTimeout(() => {
+                if (state.mode === 'week') {
+                    state.weekStart = addWeeks(state.weekStart, dx > 0 ? -1 : 1);
+                    if (!weekContains(state.weekStart, state.selected)) {
+                        state.selected = new Date(state.weekStart);
+                    }
+                } else {
+                    state.monthAnchor = addMonths(state.monthAnchor, dx > 0 ? -1 : 1);
+                    if (!sameMonth(state.monthAnchor, state.selected)) {
+                        state.selected = startOfMonth(state.monthAnchor);
+                    }
+                }
+                clearCarousel();
+                rerender();
+                animatingNav = false;
+            }, ANIMATION_MS);
+            return;
         }
 
-        if (switched) {
-            zone.addEventListener('click', (ev) => {
-                ev.stopPropagation();
-                ev.preventDefault();
-            }, { capture: true, once: true });
-            rerender();
+        if (!horizontal && Math.abs(dy) >= 30) {
+            let triggered = false;
+            if (state.mode === 'week' && dy > 0) {
+                state.mode = 'month';
+                state.monthAnchor = startOfMonth(state.selected);
+                triggered = true;
+            } else if (state.mode === 'month' && dy < 0) {
+                state.mode = 'week';
+                state.weekStart = startOfWeekMonday(state.selected);
+                triggered = true;
+            }
+            if (triggered) {
+                suppressClickUntil = performance.now() + 350;
+                rerender();
+            }
         }
     });
 
+    zone.addEventListener('click', (ev) => {
+        if (performance.now() < suppressClickUntil) {
+            ev.stopPropagation();
+            ev.preventDefault();
+            suppressClickUntil = 0;
+        }
+    }, { capture: true });
+
     zone.addEventListener('pointercancel', () => {
         ptrId = null;
         moved = false;
+        if (dragWrap) {
+            setTranslate(0, ANIMATION_MS);
+            setTimeout(clearCarousel, ANIMATION_MS + 20);
+        }
     });
 }
 
@@ -1181,36 +1342,6 @@ export function setupMealPlanner() {
         rerender();
     });
 
-    document.getElementById('cal-prev')?.addEventListener('click', () => {
-        if (state.mode === 'week') {
-            state.weekStart = addWeeks(state.weekStart, -1);
-            if (!weekContains(state.weekStart, state.selected)) {
-                state.selected = new Date(state.weekStart);
-            }
-        } else {
-            state.monthAnchor = addMonths(state.monthAnchor, -1);
-            if (!sameMonth(state.monthAnchor, state.selected)) {
-                state.selected = startOfMonth(state.monthAnchor);
-            }
-        }
-        rerender();
-    });
-
-    document.getElementById('cal-next')?.addEventListener('click', () => {
-        if (state.mode === 'week') {
-            state.weekStart = addWeeks(state.weekStart, 1);
-            if (!weekContains(state.weekStart, state.selected)) {
-                state.selected = new Date(state.weekStart);
-            }
-        } else {
-            state.monthAnchor = addMonths(state.monthAnchor, 1);
-            if (!sameMonth(state.monthAnchor, state.selected)) {
-                state.selected = startOfMonth(state.monthAnchor);
-            }
-        }
-        rerender();
-    });
-
     document.getElementById('cal-go-today')?.addEventListener('click', () => {
         const today = startOfDay(new Date());
         state.selected = today;
diff --git a/js/views/Pantry.js b/js/views/Pantry.js
index 4283ba8..de72688 100644
--- a/js/views/Pantry.js
+++ b/js/views/Pantry.js
@@ -3,16 +3,13 @@ import {
     CATEGORY_LABELS,
 } from '../data/catalog.js?v=9';
 import { loadPantry, getPantryTotal } from '../services/pantryShopping.js?v=2';
-import { loadPlans } from '../services/planStore.js?v=2';
-import { addDays, addMonths, sameDay, sameMonth, startOfDay, startOfMonth } from '../services/dateUtils.js';
+import { loadPlans, dateKey } from '../services/planStore.js?v=2';
+import { addDays, sameDay, startOfDay, startOfMonth } from '../services/dateUtils.js';
 import { aggregateRangeIngredientNeed, dayHasAnyMeal } from '../services/planIngredients.js?v=4';
 import {
-    bindCalendarDayClicks,
-    createCalendarTopbarHTML,
-    createCalendarWeekdayHeaderHTML,
-    renderCalendarGrid,
-    syncCalendarTodayButton,
-} from '../ui/mealCalendar.js?v=11';
+    createSwipePopoverCalendarHTML,
+    initSwipePopoverCalendar,
+} from '../ui/swipePopoverCalendar.js';
 import { createIngredientCardController, getIngredientCardHTML } from '../ui/ingredientCard.js?v=20260417-116';
 
 /* ── helpers ── */
@@ -79,7 +76,6 @@ const DAY_NAMES_SHORT = ['nd.', 'pon.', 'wt.', 'śr.', 'czw.', 'pt.', 'sob.'];
 const MONTHS_SHORT = ['sty', 'lut', 'mar', 'kwi', 'maj', 'cze', 'lip', 'sie', 'wrz', 'paź', 'lis', 'gru'];
 
 const DEFAULT_HORIZON_DAYS = 7;
-const PANTRY_CALENDAR_DAY_ATTR = 'data-pantry-calendar-day';
 const SHORTFALL_ACCENT = 'rgb(var(--danger-rgb))';
 const PANTRY_CALENDAR_THEME = {
     bg: 'rgb(var(--app-bg-rgb))',
@@ -105,6 +101,7 @@ let isCalendarOpen = false;
 let isFilterOpen = false;
 let calendarMonthAnchor = startOfMonth(horizonEndDate);
 let pantryGlobalListenersBound = false;
+let pantryCalendar = null;
 let pantryFilters = {
     categories: [],
     sections: [],
@@ -140,10 +137,6 @@ function formatHorizonLabel(date) {
     return sameDay(date, getToday()) ? 'Do dziś' : `Do ${formatEndDate(date)}`;
 }
 
-function formatRangeSummary(date) {
-    return sameDay(date, getToday()) ? 'Zakres: tylko dziś' : `Zakres: dziś - ${formatEndDate(date)}`;
-}
-
 function formatDayContext(dayStrings) {
     const dayNames = dayStrings.map((ds) => {
         const d = new Date(ds + 'T00:00:00');
@@ -209,25 +202,8 @@ export function getPantryHTML() {
                     </div>
 
 
-                    <div id="pantry-calendar-popover" class="absolute left-0 right-0 top-full mt-2 rounded-[1.35rem] px-3 py-3 transition-all duration-200 pointer-events-none" style="background:rgb(var(--sunken-rgb)) !important; border:1px solid rgb(var(--border-input-rgb)) !important; box-shadow:var(--shadow-shell) !important; opacity:0; transform:translateY(-6px) scale(0.98);">
-                        ${createCalendarTopbarHTML({
-    prevId: 'pantry-cal-prev',
-    todayId: 'pantry-cal-today',
-    nextId: 'pantry-cal-next',
-    wrapperClass: 'pb-3 flex items-center justify-end gap-3',
-    controlsStyle: `background:${PANTRY_CALENDAR_THEME.bg};border-color:${PANTRY_CALENDAR_THEME.border};`,
-    navButtonClass: 'shrink-0 w-7 h-full flex items-center justify-center rounded-full border-0 bg-transparent text-[rgb(var(--text-body-soft-rgb))] transition-colors',
-    todayButtonActiveClass: 'h-full shrink-0 inline-flex min-w-[5.75rem] max-w-[9rem] items-center justify-center rounded-full bg-transparent px-1.5 text-[10px] font-semibold leading-none tabular-nums text-[rgb(var(--text-body-soft-rgb))] active:bg-transparent whitespace-nowrap',
-    todayButtonDimClass: 'h-full shrink-0 inline-flex items-center justify-center rounded-full px-2 text-[10px] font-semibold leading-none text-[rgb(var(--text-faint-rgb))] cursor-default',
-})}
-                        ${createCalendarWeekdayHeaderHTML(undefined, {
-    wrapperClass: 'grid grid-cols-7 gap-1.5 text-center text-[8px] font-medium text-[rgb(var(--text-dim-rgb))] uppercase tracking-wide mb-1 leading-none',
-})}
-                        <div id="pantry-calendar-grid" class="grid grid-cols-7 gap-1.5"></div>
-
-                        <div class="mt-3 pt-3 border-t" style="border-color:rgb(var(--card-strong-rgb));">
-                            <p id="pantry-cal-selection" class="min-w-0 text-[11px] leading-snug" style="color:rgb(var(--text-dim-rgb));"></p>
-                        </div>
+                    <div id="pantry-calendar-popover" class="absolute left-0 right-0 top-full mt-2 rounded-[1.35rem] py-3 transition-all duration-200 pointer-events-none" style="background:rgb(var(--sunken-rgb)) !important; border:1px solid rgb(var(--border-input-rgb)) !important; box-shadow:var(--shadow-shell) !important; opacity:0; transform:translateY(-6px) scale(0.98);">
+                        ${createSwipePopoverCalendarHTML({ idPrefix: 'pantry-cal' })}
                     </div>
 
                     <div id="pantry-search-shell" class="absolute inset-0 flex items-center gap-2 rounded-full px-3 transition-all duration-200 pointer-events-none" style="background:rgb(var(--sunken-rgb)) !important; border:1px solid rgb(var(--border-input-rgb)) !important; box-shadow:var(--shadow-shell) !important; opacity:0; transform:translateY(-2px) scale(0.98);">
@@ -264,12 +240,8 @@ function syncHorizonUI() {
     const compactLabel = document.getElementById('pantry-horizon-compact-label');
     const compactPill = document.getElementById('pantry-horizon-compact');
     const chevron = document.getElementById('pantry-horizon-chevron');
-    const selectionEl = document.getElementById('pantry-cal-selection');
-    const prevBtn = document.getElementById('pantry-cal-prev');
-    const todayBtn = document.getElementById('pantry-cal-today');
 
     if (compactLabel) compactLabel.textContent = formatHorizonLabel(horizonEndDate);
-    if (selectionEl) selectionEl.textContent = formatRangeSummary(horizonEndDate);
 
     const showCalendar = isCalendarOpen && !isSearchExpanded;
     const showDefault = !isSearchExpanded;
@@ -313,22 +285,6 @@ function syncHorizonUI() {
         filterCount.classList.toggle('flex', activeFilterCount > 0);
     }
 
-    if (prevBtn) {
-        const isCurrentMonth = sameMonth(calendarMonthAnchor, getToday());
-        prevBtn.disabled = isCurrentMonth;
-        prevBtn.style.opacity = isCurrentMonth ? '0.45' : '1';
-        prevBtn.style.cursor = isCurrentMonth ? 'default' : 'pointer';
-    }
-    syncCalendarTodayButton(
-        todayBtn,
-        sameMonth(calendarMonthAnchor, getToday()),
-        horizonEndDate,
-        {
-            ariaLabelGo: 'Pokaż bieżący miesiąc w kalendarzu',
-            ariaLabelCurrent: 'Wyświetlany jest bieżący miesiąc',
-        },
-    );
-
     if (searchShell) {
         searchShell.style.opacity = isSearchExpanded ? '1' : '0';
         searchShell.style.transform = isSearchExpanded ? 'translateY(0) scale(1)' : 'translateY(-2px) scale(0.98)';
@@ -340,29 +296,38 @@ function syncHorizonUI() {
 }
 
 function renderCalendarPopover() {
-    const gridEl = document.getElementById('pantry-calendar-grid');
-    if (!gridEl) return;
+    pantryCalendar?.render();
+}
 
-    ensureValidHorizonDate();
-    const today = getToday();
-    const plans = loadPlans();
-
-    renderCalendarGrid({
-        gridEl,
-        mode: 'month',
-        anchorDate: calendarMonthAnchor,
-        selectedDate: horizonEndDate,
-        resolveDayState: (day, meta) => {
-            const isPast = day.getTime() < today.getTime();
+function bindPantryCalendarInteractions() {
+    pantryCalendar = initSwipePopoverCalendar({
+        idPrefix: 'pantry-cal',
+        selectionMode: 'single',
+        panelHandlePx: 10,
+        panelHandleMin: 8,
+        panelHandleMax: 12,
+        getMonthAnchor: () => calendarMonthAnchor,
+        setMonthAnchor: (nextMonth) => {
+            const nextAnchor = startOfMonth(nextMonth);
+            const minAnchor = startOfMonth(getToday());
+            if (nextAnchor.getTime() < minAnchor.getTime()) return;
+            calendarMonthAnchor = nextAnchor;
+        },
+        getSelectionKeys: () => dateKey(horizonEndDate),
+        onSelectionCommit: (selectedKey) => {
+            selectHorizonDate(new Date(`${selectedKey}T00:00:00`));
+        },
+        resolveDayState: (day, { inCurrentMonth }) => {
+            const isPast = day.getTime() < getToday().getTime();
             return {
                 disabled: isPast,
-                dimmed: isPast || !meta.inCurrentMonth,
-                showIndicator: dayHasAnyMeal(plans, day),
+                dimmed: isPast || !inCurrentMonth,
+                showDot: dayHasAnyMeal(loadPlans(), day),
             };
         },
-        dayAttr: PANTRY_CALENDAR_DAY_ATTR,
         theme: PANTRY_CALENDAR_THEME,
     });
+    pantryCalendar.render();
 }
 
 function filterChipHtml(kind, value, label, active) {
@@ -434,6 +399,7 @@ function openSearch() {
 function closeCalendar() {
     if (!isCalendarOpen) return;
     isCalendarOpen = false;
+    pantryCalendar?.resetTrackPosition();
     syncHorizonUI();
 }
 
@@ -444,6 +410,10 @@ function openCalendar() {
     isFilterOpen = false;
     isCalendarOpen = true;
     syncHorizonUI();
+    requestAnimationFrame(() => {
+        pantryCalendar?.reapplyLayout();
+        pantryCalendar?.resetTrackPosition();
+    });
 }
 
 function closeFilter() {
@@ -767,23 +737,7 @@ export function setupPantry() {
         event.stopPropagation();
         isCalendarOpen ? closeCalendar() : openCalendar();
     });
-    document.getElementById('pantry-cal-prev')?.addEventListener('click', () => {
-        const prevMonth = addMonths(calendarMonthAnchor, -1);
-        if (prevMonth.getTime() < startOfMonth(getToday()).getTime()) return;
-        calendarMonthAnchor = prevMonth;
-        syncHorizonUI();
-    });
-    document.getElementById('pantry-cal-next')?.addEventListener('click', () => {
-        calendarMonthAnchor = addMonths(calendarMonthAnchor, 1);
-        syncHorizonUI();
-    });
-    document.getElementById('pantry-cal-today')?.addEventListener('click', () => {
-        calendarMonthAnchor = startOfMonth(getToday());
-        syncHorizonUI();
-    });
-    bindCalendarDayClicks(document.getElementById('pantry-calendar-grid'), (date) => {
-        selectHorizonDate(date);
-    }, PANTRY_CALENDAR_DAY_ATTR);
+    bindPantryCalendarInteractions();
 
     if (!pantryGlobalListenersBound) {
         pantryGlobalListenersBound = true;
diff --git a/js/views/ShoppingList.js b/js/views/ShoppingList.js
index ab9e1f3..cc41e46 100644
--- a/js/views/ShoppingList.js
+++ b/js/views/ShoppingList.js
@@ -14,7 +14,8 @@ import {
 } from '../services/pantryShopping.js?v=2';
 import { aggregateSelectedDaysIngredientNeed } from '../services/planIngredients.js?v=2';
 import { loadPlans, dateKey } from '../services/planStore.js?v=2';
-import { addDays, startOfDay, startOfMonth, startOfWeekMonday } from '../services/dateUtils.js';
+import { addDays, startOfDay, startOfMonth } from '../services/dateUtils.js';
+import { createSwipePopoverCalendarHTML, initSwipePopoverCalendar } from '../ui/swipePopoverCalendar.js';
 import { showAppToast } from '../ui/toast.js';
 
 /* ── helpers ── */
@@ -62,6 +63,7 @@ let expandedIngredientId = null;
 let expandedAmount = 0;
 let calendarOpen = false;
 let calendarMonth = startOfMonth(new Date());
+let shoppingCalendar = null;
 
 /* ── day helpers ── */
 
@@ -112,10 +114,6 @@ function groupByCategory(items) {
 /* ══════════════════════ HTML SHELL ══════════════════════ */
 
 export function getShoppingListHTML() {
-    const weekdayHeader = WEEKDAY_SHORT
-        .map((d) => `<div>${d}</div>`)
-        .join('');
-
     return `
     <div id="shopping-view" class="hidden flex flex-col h-full absolute inset-0 overflow-hidden z-10" style="background:rgb(var(--app-bg-rgb)) !important;">
 
@@ -136,23 +134,11 @@ export function getShoppingListHTML() {
 
                 <!-- popup calendar (absolute, overlays content below) -->
                 <div id="sl-calendar-popup" style="position:absolute; top:calc(100% + 0.5rem); left:0; right:0; z-index:50; pointer-events:none; opacity:0; transform:translateY(-6px) scale(0.98); transition: opacity 0.2s ease, transform 0.2s ease;">
-                    <div class="rounded-[1.35rem] px-3 py-3" style="background:rgb(var(--sunken-rgb)); border:1px solid rgb(var(--border-input-rgb)); box-shadow:var(--shadow-shell);">
-                        <!-- month nav topbar -->
-                        <div class="pb-3 flex items-center justify-end gap-3">
-                            <div class="flex h-[2.05rem] min-w-0 max-w-[min(100%,20rem)] items-center gap-px rounded-full border px-0.5" style="background:rgb(var(--app-bg-rgb)); border-color:rgb(var(--card-raised-rgb));">
-                                <button type="button" id="sl-cal-prev" class="shrink-0 w-7 h-full flex items-center justify-center rounded-full bg-transparent transition-colors" style="color:rgb(var(--text-body-soft-rgb));">
-                                    <i class="fas fa-chevron-left text-[10px]"></i>
-                                </button>
-                                <span id="sl-cal-month-label" class="h-full shrink-0 inline-flex min-w-[5.75rem] max-w-[9rem] items-center justify-center px-1.5 text-[10px] font-semibold leading-none tabular-nums whitespace-nowrap" style="color:rgb(var(--text-body-soft-rgb));"></span>
-                                <button type="button" id="sl-cal-next" class="shrink-0 w-7 h-full flex items-center justify-center rounded-full bg-transparent transition-colors" style="color:rgb(var(--text-body-soft-rgb));">
-                                    <i class="fas fa-chevron-right text-[10px]"></i>
-                                </button>
-                            </div>
-                        </div>
-                        <!-- weekday header -->
-                        <div class="grid grid-cols-7 gap-1.5 text-center text-[8px] font-medium uppercase tracking-wide mb-1 leading-none" style="color:rgb(var(--text-dim-rgb));">${weekdayHeader}</div>
-                        <!-- day grid -->
-                        <div id="sl-cal-grid" class="grid grid-cols-7 gap-1.5"></div>
+                    <div class="rounded-[1.35rem] py-3" style="background:rgb(var(--sunken-rgb)); border:1px solid rgb(var(--border-input-rgb)); box-shadow:var(--shadow-shell);">
+                        ${createSwipePopoverCalendarHTML({
+        idPrefix: 'sl-cal',
+        weekdays: WEEKDAY_SHORT,
+    })}
                     </div>
                 </div>
 
@@ -180,115 +166,41 @@ export function getShoppingListHTML() {
 
 /* ══════════════════════ CALENDAR ══════════════════════ */
 
-function getDayRange(startDk, endDk) {
-    const a = new Date(startDk + 'T00:00:00');
-    const b = new Date(endDk + 'T00:00:00');
-    const [from, to] = a <= b ? [a, b] : [b, a];
-    const days = [];
-    for (let d = new Date(from); d <= to; d = addDays(d, 1)) days.push(dateKey(d));
-    return days;
-}
-
-function renderCalendarGrid(previewDays = null) {
-    const grid = document.getElementById('sl-cal-grid');
-    const monthLabel = document.getElementById('sl-cal-month-label');
-    if (!grid) return;
-
-    if (monthLabel) {
-        monthLabel.textContent = `${MONTHS_LONG[calendarMonth.getMonth()]} ${calendarMonth.getFullYear()}`;
-    }
-
-    const selected = previewDays ?? new Set(getSelectedDays());
-    const today = todayKey();
-    const first = startOfMonth(calendarMonth);
-    const gridStart = startOfWeekMonday(first);
-
-    const cells = Array.from({ length: 42 }, (_, i) => addDays(gridStart, i));
-    while (cells.length > 35 && cells.slice(-7).every((d) => d.getMonth() !== first.getMonth())) {
-        cells.splice(-7);
-    }
-
-    grid.innerHTML = cells.map((day) => {
-        const dk = dateKey(day);
-        const inMonth = day.getMonth() === first.getMonth();
-        const isSel = selected.has(dk);
-        const isToday = dk === today;
-
-        let bg, borderColor, color, opacity, borderClass;
-        if (isSel) {
-            bg = 'rgb(var(--card-rgb))'; borderColor = 'rgb(var(--border-input-rgb))'; color = 'rgb(var(--text-emphasis-rgb))'; opacity = '1'; borderClass = 'border';
-        } else if (!inMonth) {
-            bg = 'transparent'; borderColor = 'transparent'; color = CALENDAR_DIM_TEXT; opacity = CALENDAR_DIM_OPACITY; borderClass = 'border-0';
-        } else {
-            bg = 'rgb(var(--app-bg-rgb))'; borderColor = 'rgb(var(--card-raised-rgb))'; color = 'rgb(var(--text-body-soft-rgb))'; opacity = '1'; borderClass = 'border';
-        }
-
-        const dot = isToday && !isSel
-            ? `<span class="absolute left-1/2 -translate-x-1/2 w-1 h-1 rounded-full opacity-75" style="bottom:0.24rem; background:rgb(var(--text-faint-rgb));"></span>`
-            : '';
-
-        return `<button type="button" class="sl-cal-day mx-auto flex h-[2.05rem] w-full min-w-0 max-w-full items-center justify-center rounded-full ${borderClass} text-xs font-medium leading-tight overflow-hidden"
-            style="background:${bg}; border-color:${borderColor}; color:${color}; opacity:${opacity}; touch-action:none;"
-            data-dk="${esc(dk)}">
-            <span class="relative flex h-full w-full flex-col items-center justify-center">
-                <span class="text-[13px] font-semibold leading-none${dot ? ' -translate-y-[0.18rem]' : ''}">${day.getDate()}</span>
-                ${dot}
-            </span>
-        </button>`;
-    }).join('');
-}
-
-function bindCalendarEvents() {
-    const grid = document.getElementById('sl-cal-grid');
-    if (!grid) return;
-
-    let dragStartDk = null;
-    let dragCurrentDk = null;
-    let dragging = false;
-
-    grid.addEventListener('pointerdown', (e) => {
-        e.stopPropagation();
-        const btn = e.target.closest('.sl-cal-day');
-        if (!btn) return;
-        dragStartDk = btn.dataset.dk;
-        dragCurrentDk = btn.dataset.dk;
-        dragging = true;
-        grid.setPointerCapture(e.pointerId);
-        renderCalendarGrid(new Set([dragStartDk]));
+function initShoppingCalendar() {
+    shoppingCalendar = initSwipePopoverCalendar({
+        idPrefix: 'sl-cal',
+        selectionMode: 'range',
+        monthsLong: MONTHS_LONG,
+        getMonthAnchor: () => calendarMonth,
+        setMonthAnchor: (nextMonth) => {
+            calendarMonth = startOfMonth(nextMonth);
+        },
+        getSelectionKeys: () => getSelectedDays(),
+        onSelectionCommit: (rangeKeys) => {
+            setSelectedDays(rangeKeys);
+            expandedIngredientId = null;
+            updatePillLabel();
+            renderAll();
+        },
+        resolveDayState: (day, { inCurrentMonth, isSelected }) => ({
+            disabled: false,
+            dimmed: !inCurrentMonth,
+            showDot: dateKey(day) === todayKey() && !isSelected,
+        }),
+        theme: {
+            selectedBg: 'rgb(var(--card-rgb))',
+            selectedBorder: 'rgb(var(--border-input-rgb))',
+            selectedText: 'rgb(var(--text-emphasis-rgb))',
+            selectedDot: 'rgb(var(--text-emphasis-rgb))',
+            bg: 'rgb(var(--app-bg-rgb))',
+            border: 'rgb(var(--card-raised-rgb))',
+            text: 'rgb(var(--text-body-soft-rgb))',
+            dimmedBg: 'transparent',
+            dimText: CALENDAR_DIM_TEXT,
+            dimOpacity: Number(CALENDAR_DIM_OPACITY),
+            dot: 'rgb(var(--text-faint-rgb))',
+        },
     });
-
-    grid.addEventListener('pointermove', (e) => {
-        if (!dragging || !dragStartDk) return;
-        e.preventDefault();
-        const el = document.elementFromPoint(e.clientX, e.clientY);
-        const btn = el?.closest('.sl-cal-day');
-        if (!btn?.dataset.dk || btn.dataset.dk === dragCurrentDk) return;
-        dragCurrentDk = btn.dataset.dk;
-        renderCalendarGrid(new Set(getDayRange(dragStartDk, dragCurrentDk)));
-    });
-
-    grid.addEventListener('pointerup', (e) => {
-        if (!dragging) return;
-        dragging = false;
-        const range = getDayRange(dragStartDk, dragCurrentDk);
-        dragStartDk = null;
-        dragCurrentDk = null;
-        setSelectedDays(range);
-        expandedIngredientId = null;
-        updatePillLabel();
-        renderCalendarGrid();
-        renderAll();
-    });
-
-    grid.addEventListener('pointercancel', () => {
-        dragging = false;
-        dragStartDk = null;
-        dragCurrentDk = null;
-        renderCalendarGrid();
-    });
-
-    // Prevent bubbled click events (generated after pointerup) from closing the popup
-    grid.addEventListener('click', (e) => e.stopPropagation());
 }
 
 function updatePillLabel() {
@@ -301,6 +213,7 @@ function openCalendar() {
     calendarOpen = true;
     calendarMonth = startOfMonth(new Date());
     const popup = document.getElementById('sl-calendar-popup');
+    const viewport = document.getElementById('sl-cal-viewport');
     const chevron = document.getElementById('sl-range-chevron');
     const pill = document.getElementById('sl-range-pill');
     if (popup) {
@@ -313,7 +226,31 @@ function openCalendar() {
         pill.style.background = 'rgb(var(--sunken-rgb))';
         pill.style.borderColor = 'rgb(var(--border-input-rgb))';
     }
-    renderCalendarGrid();
+    if (viewport) {
+        viewport.style.opacity = '0';
+        viewport.style.visibility = 'hidden';
+        viewport.style.transition = 'opacity 120ms ease';
+    }
+    shoppingCalendar?.render();
+    // Compute geometry while hidden; reveal only after stable layout.
+    const ensureStableCalendarLayout = (attempt = 0) => {
+        const vw = viewport ? (viewport.clientWidth || viewport.getBoundingClientRect().width) : 0;
+        if (vw < 8 && attempt < 8) {
+            requestAnimationFrame(() => ensureStableCalendarLayout(attempt + 1));
+            return;
+        }
+        shoppingCalendar?.reapplyLayout();
+        shoppingCalendar?.resetTrackPosition();
+        requestAnimationFrame(() => {
+            shoppingCalendar?.reapplyLayout();
+            shoppingCalendar?.resetTrackPosition();
+            if (viewport) {
+                viewport.style.visibility = 'visible';
+                viewport.style.opacity = '1';
+            }
+        });
+    };
+    requestAnimationFrame(() => ensureStableCalendarLayout());
 }
 
 function closeCalendar() {
@@ -331,6 +268,7 @@ function closeCalendar() {
         pill.style.background = 'rgb(var(--card-rgb))';
         pill.style.borderColor = 'rgb(var(--border-card-rgb))';
     }
+    shoppingCalendar?.resetTrackPosition();
 }
 
 function toggleCalendar() {
@@ -671,6 +609,7 @@ function bindActiveRowEvents(root, activeItems) {
 export function refreshShoppingList() {
     updatePillLabel();
     renderAll();
+    if (calendarOpen) shoppingCalendar?.render();
 }
 
 export function setupShoppingList() {
@@ -679,7 +618,7 @@ export function setupShoppingList() {
     updatePillLabel();
     renderAll();
 
-    bindCalendarEvents();
+    initShoppingCalendar();
 
     document.getElementById('sl-range-pill')?.addEventListener('click', (e) => {
         e.stopPropagation();
@@ -708,19 +647,6 @@ export function setupShoppingList() {
         }
     });
 
-    document.getElementById('sl-cal-prev')?.addEventListener('click', (e) => {
-        e.stopPropagation();
-        calendarMonth = startOfMonth(new Date(calendarMonth.getFullYear(), calendarMonth.getMonth() - 1, 1));
-        renderCalendarGrid();
-    });
-
-    document.getElementById('sl-cal-next')?.addEventListener('click', (e) => {
-        e.stopPropagation();
-        calendarMonth = startOfMonth(new Date(calendarMonth.getFullYear(), calendarMonth.getMonth() + 1, 1));
-        renderCalendarGrid();
-    });
-
-
     document.getElementById('sl-clear-session')?.addEventListener('click', (e) => {
         e.stopPropagation();
         clearSessionLog();