const MONTHS_SHORT = [
    'sty', 'lut', 'mar', 'kwi', 'maj', 'cze',
    'lip', 'sie', 'wrz', 'paź', 'lis', 'gru',
];
const WEEKDAYS_SHORT = ['pn', 'wt', 'śr', 'cz', 'pt', 'so', 'nd'];
const WEEKDAYS_LONG = [
    'Niedziela', 'Poniedziałek', 'Wtorek', 'Środa', 'Czwartek', 'Piątek', 'Sobota',
];

const MEAL_SLOTS = [
    { id: 'sniadanie', label: 'Śniadanie', icon: 'fa-sun' },
    { id: 'drugie_sniadanie', label: 'Drugie śniadanie', icon: 'fa-coffee' },
    { id: 'obiad', label: 'Obiad', icon: 'fa-utensils' },
    { id: 'przekaska', label: 'Przekąska', icon: 'fa-apple-alt' },
    { id: 'kolacja', label: 'Kolacja', icon: 'fa-moon' },
];

/** Katalog przepisów (spójny z listą w aplikacji) — porcja bazowa = 1 */
const PLANNER_RECIPES = {
    placki: {
        id: 'placki',
        title: 'Puszyste placki',
        minutes: 15,
        thumbLabel: 'Placki',
        allowedSlots: ['sniadanie', 'drugie_sniadanie'],
        nutritionPerServing: { kcal: 320, protein: 12, fat: 8, carbs: 48 },
        ingredients: [
            { name: 'Mąka pszenna', amount: 200, unit: 'g' },
            { name: 'Mleko', amount: 250, unit: 'ml' },
            { name: 'Jajka', amount: 2, unit: 'szt.' },
        ],
    },
    salatka: {
        id: 'salatka',
        title: 'Sałatka z kurczakiem',
        minutes: 20,
        thumbLabel: 'Sałatka',
        allowedSlots: ['obiad'],
        nutritionPerServing: { kcal: 250, protein: 35, fat: 9, carbs: 12 },
        ingredients: [
            { name: 'Pierś z kurczaka', amount: 150, unit: 'g' },
            { name: 'Mix sałat', amount: 100, unit: 'g' },
            { name: 'Pomidor', amount: 1, unit: 'szt.' },
        ],
    },
    makaron: {
        id: 'makaron',
        title: 'Makaron z pomidorami i bazylią',
        minutes: 30,
        thumbLabel: 'Makaron',
        allowedSlots: ['obiad', 'kolacja'],
        nutritionPerServing: { kcal: 450, protein: 14, fat: 12, carbs: 72 },
        ingredients: [
            { name: 'Makaron', amount: 120, unit: 'g' },
            { name: 'Pomidory krojone', amount: 400, unit: 'g' },
            { name: 'Bazylia świeża', amount: 10, unit: 'g' },
        ],
    },
    koktajl: {
        id: 'koktajl',
        title: 'Koktajl owocowy',
        minutes: 5,
        thumbLabel: 'Koktajl',
        allowedSlots: ['przekaska', 'drugie_sniadanie'],
        nutritionPerServing: { kcal: 180, protein: 8, fat: 3, carbs: 32 },
        ingredients: [
            { name: 'Jogurt naturalny', amount: 200, unit: 'g' },
            { name: 'Mieszanka jagód', amount: 150, unit: 'g' },
            { name: 'Miód', amount: 15, unit: 'g' },
        ],
    },
    tost_awokado: {
        id: 'tost_awokado',
        title: 'Tost z awokado',
        minutes: 10,
        thumbLabel: 'Tost',
        allowedSlots: ['sniadanie', 'drugie_sniadanie'],
        nutritionPerServing: { kcal: 220, protein: 6, fat: 14, carbs: 20 },
        ingredients: [
            { name: 'Chleb na zakwasie', amount: 2, unit: 'kromki' },
            { name: 'Awokado', amount: 1, unit: 'szt.' },
            { name: 'Cytryna', amount: 0.5, unit: 'szt.' },
        ],
    },
    losos: {
        id: 'losos',
        title: 'Grillowany łosoś',
        minutes: 25,
        thumbLabel: 'Łosoś',
        allowedSlots: ['kolacja', 'obiad'],
        nutritionPerServing: { kcal: 380, protein: 38, fat: 22, carbs: 4 },
        ingredients: [
            { name: 'Filet z łososia', amount: 180, unit: 'g' },
            { name: 'Cytryna', amount: 0.5, unit: 'szt.' },
            { name: 'Koper', amount: 5, unit: 'g' },
        ],
    },
    tacos: {
        id: 'tacos',
        title: 'Tacos z wołowiną',
        minutes: 20,
        thumbLabel: 'Tacos',
        allowedSlots: ['kolacja', 'obiad'],
        nutritionPerServing: { kcal: 410, protein: 28, fat: 18, carbs: 38 },
        ingredients: [
            { name: 'Mięso mielone wołowe', amount: 200, unit: 'g' },
            { name: 'Tortille kukurydziane', amount: 4, unit: 'szt.' },
            { name: 'Salsa pomidorowa', amount: 100, unit: 'g' },
        ],
    },
    owsianka: {
        id: 'owsianka',
        title: 'Miska owsianki',
        minutes: 10,
        thumbLabel: 'Owsianka',
        allowedSlots: ['sniadanie', 'drugie_sniadanie'],
        nutritionPerServing: { kcal: 210, protein: 8, fat: 6, carbs: 34 },
        ingredients: [
            { name: 'Płatki owsiane', amount: 60, unit: 'g' },
            { name: 'Mleko', amount: 200, unit: 'ml' },
            { name: 'Miód', amount: 20, unit: 'g' },
        ],
    },
    serek_owoc: {
        id: 'serek_owoc',
        title: 'Serek wiejski z orzechami i owocami',
        minutes: 5,
        thumbLabel: 'Serek',
        allowedSlots: ['sniadanie', 'drugie_sniadanie', 'przekaska'],
        nutritionPerServing: { kcal: 642, protein: 32, fat: 43, carbs: 41 },
        ingredients: [
            { name: 'Serek wiejski', amount: 200, unit: 'g' },
            { name: 'Miód', amount: 10, unit: 'g' },
            { name: 'Orzechy włoskie', amount: 50, unit: 'g' },
            { name: 'Truskawki', amount: 100, unit: 'g' },
            { name: 'Borówki ameryk.', amount: 80, unit: 'g' },
        ],
    },
};

const PLANS_STORAGE_KEY = 'recipe-planner-plans-v1';

/** Odstęp od dołu planera = miejsce na dolną nawigację. Ten sam w `bottom`, `max-height` i w `translateY(calc(100% + …))` przy zamknięciu — inaczej zostaje widoczny uchwyt. */
const PLANNER_SHEET_BOTTOM_INSET = '5.25rem';
const PLANNER_SHEET_OFF_TRANSFORM = `translateY(calc(100% + ${PLANNER_SHEET_BOTTOM_INSET}))`;

function startOfDay(d) {
    const x = new Date(d);
    x.setHours(0, 0, 0, 0);
    return x;
}

function sameDay(a, b) {
    return a.getFullYear() === b.getFullYear()
        && a.getMonth() === b.getMonth()
        && a.getDate() === b.getDate();
}

function addDays(d, n) {
    const x = new Date(d);
    x.setDate(x.getDate() + n);
    return startOfDay(x);
}

/** Poniedziałek jako pierwszy dzień tygodnia (PL) */
function startOfWeekMonday(d) {
    const date = startOfDay(d);
    const day = date.getDay();
    const diff = day === 0 ? -6 : 1 - day;
    return addDays(date, diff);
}

function startOfMonth(d) {
    const x = new Date(d.getFullYear(), d.getMonth(), 1);
    return startOfDay(x);
}

function addMonths(d, n) {
    const x = new Date(d);
    x.setMonth(x.getMonth() + n);
    return startOfDay(x);
}

function addWeeks(d, n) {
    return addDays(d, n * 7);
}

function weekContains(weekStart, d) {
    const t = startOfDay(d).getTime();
    const ws = weekStart.getTime();
    const we = addDays(weekStart, 6).getTime();
    return t >= ws && t <= we;
}

function sameMonth(a, b) {
    return a.getMonth() === b.getMonth() && a.getFullYear() === b.getFullYear();
}

function dateKey(d) {
    const x = startOfDay(d);
    const y = x.getFullYear();
    const m = String(x.getMonth() + 1).padStart(2, '0');
    const day = String(x.getDate()).padStart(2, '0');
    return `${y}-${m}-${day}`;
}

function newPlanEntryId() {
    if (typeof crypto !== 'undefined' && typeof crypto.randomUUID === 'function') {
        return crypto.randomUUID();
    }
    return `e${Date.now()}-${Math.random().toString(36).slice(2, 11)}`;
}

/** Jedna pora dnia = tablica wpisów { id, recipeId, servings } (stary format: jeden obiekt — migrujemy przy wczytaniu). */
function normalizeSlotValue(v) {
    if (!v) return [];
    if (Array.isArray(v)) {
        return v
            .filter((x) => x && x.recipeId && PLANNER_RECIPES[x.recipeId])
            .map((x) => ({
                id: x.id && String(x.id).length ? String(x.id) : newPlanEntryId(),
                recipeId: x.recipeId,
                servings: Math.max(1, Math.min(12, Number(x.servings) || 1)),
            }));
    }
    if (typeof v === 'object' && v.recipeId && PLANNER_RECIPES[v.recipeId]) {
        return [{
            id: newPlanEntryId(),
            recipeId: v.recipeId,
            servings: Math.max(1, Math.min(12, Number(v.servings) || 1)),
        }];
    }
    return [];
}

function normalizeDayPlan(day) {
    if (!day || typeof day !== 'object') return {};
    const out = {};
    MEAL_SLOTS.forEach((s) => {
        const arr = normalizeSlotValue(day[s.id]);
        if (arr.length > 0) out[s.id] = arr;
    });
    return out;
}

function normalizeAllPlans(plans) {
    if (!plans || typeof plans !== 'object') return {};
    const out = {};
    Object.keys(plans).forEach((key) => {
        const d = normalizeDayPlan(plans[key]);
        if (Object.keys(d).length > 0) out[key] = d;
    });
    return out;
}

function loadPlans() {
    try {
        const raw = localStorage.getItem(PLANS_STORAGE_KEY);
        if (!raw) return {};
        const parsed = JSON.parse(raw);
        if (typeof parsed !== 'object' || parsed === null) return {};
        return normalizeAllPlans(parsed);
    } catch {
        return {};
    }
}

function savePlans(plans) {
    try {
        localStorage.setItem(PLANS_STORAGE_KEY, JSON.stringify(plans));
    } catch { /* ignore */ }
}

function getDayPlan(plans, d) {
    const key = dateKey(d);
    const day = plans[key];
    return day && typeof day === 'object' ? day : {};
}

function dayHasAnyMeal(plans, d) {
    const p = getDayPlan(plans, d);
    return MEAL_SLOTS.some((s) => {
        const arr = p[s.id];
        return Array.isArray(arr) && arr.length > 0;
    });
}

function sumDayNutrition(dayPlan) {
    let kcal = 0;
    let protein = 0;
    let fat = 0;
    let carbs = 0;
    let mealCount = 0;
    MEAL_SLOTS.forEach((slot) => {
        const entries = dayPlan[slot.id];
        if (!Array.isArray(entries)) return;
        entries.forEach((entry) => {
            if (!entry || !entry.recipeId) return;
            const r = PLANNER_RECIPES[entry.recipeId];
            if (!r) return;
            const s = Math.max(1, Number(entry.servings) || 1);
            mealCount += 1;
            kcal += r.nutritionPerServing.kcal * s;
            protein += r.nutritionPerServing.protein * s;
            fat += r.nutritionPerServing.fat * s;
            carbs += r.nutritionPerServing.carbs * s;
        });
    });
    return {
        kcal: Math.round(kcal),
        protein: Math.round(protein * 10) / 10,
        fat: Math.round(fat * 10) / 10,
        carbs: Math.round(carbs * 10) / 10,
        mealCount,
    };
}

/**
 * Jedna grupa na porę dnia: nagłówek pory raz, potem bloki przepisów ze składnikami.
 * @returns {{ mealLabel: string, recipes: { recipeTitle: string, items: { name: string, amount: number, unit: string }[] }[] }[]}
 */
function aggregateDayIngredientsBySlot(dayPlan) {
    /** @type {{ mealLabel: string, recipes: { recipeTitle: string, items: { name: string, amount: number, unit: string }[] }[] }[]} */
    const blocks = [];
    MEAL_SLOTS.forEach((slot) => {
        const entries = dayPlan[slot.id];
        if (!Array.isArray(entries) || entries.length === 0) return;
        const recipes = [];
        entries.forEach((entry) => {
            if (!entry || !entry.recipeId) return;
            const r = PLANNER_RECIPES[entry.recipeId];
            if (!r) return;
            const s = Math.max(1, Number(entry.servings) || 1);
            const items = r.ingredients.map((ing) => ({
                name: ing.name,
                amount: Math.round(ing.amount * s * 10) / 10,
                unit: ing.unit,
            }));
            recipes.push({ recipeTitle: r.title, items });
        });
        if (recipes.length > 0) {
            blocks.push({ mealLabel: slot.label, recipes });
        }
    });
    return blocks;
}

function recipesForSlot(slotId) {
    return Object.values(PLANNER_RECIPES).filter((r) => r.allowedSlots.includes(slotId));
}

function isCalendarOnToday(mode, weekStart, monthAnchor, selected) {
    const today = startOfDay(new Date());
    if (!sameDay(selected, today)) return false;
    if (mode === 'week') return weekContains(weekStart, today);
    return sameMonth(monthAnchor, today);
}

function syncTodayButton(mode, weekStart, monthAnchor, selected) {
    const btn = document.getElementById('cal-go-today');
    if (!btn) return;
    const onToday = isCalendarOnToday(mode, weekStart, monthAnchor, selected);
    const active = 'h-6 shrink-0 inline-flex items-center justify-center gap-1 rounded-md border border-gray-200 bg-white px-2 text-[10px] font-semibold text-gray-700 shadow-sm hover:bg-gray-50 hover:text-gray-900 transition-colors';
    const dim = 'h-6 shrink-0 inline-flex items-center justify-center gap-1 rounded-md border border-gray-100 bg-gray-50 px-2 text-[10px] font-semibold text-gray-400 shadow-none cursor-default transition-colors';
    btn.className = onToday ? dim : active;
    btn.disabled = onToday;
}

export function getMealPlannerHTML() {
    return `
    <div id="planner-view" class="hidden flex flex-col h-full absolute inset-0 overflow-hidden bg-gray-50 z-10 pb-24">
        <div class="shrink-0 bg-white border-b border-gray-200 mt-3">
            <div class="px-3 pt-2 pb-1.5 flex items-center gap-1">
                <button type="button" id="cal-prev" class="shrink-0 w-8 h-8 flex items-center justify-center rounded-full border border-gray-200 text-gray-700 hover:bg-gray-50 transition-colors" aria-label="Poprzedni okres">
                    <i class="fas fa-chevron-left text-xs" aria-hidden="true"></i>
                </button>
                <p id="cal-period-label" class="flex-1 min-w-0 text-xs font-medium text-gray-900 text-center tabular-nums leading-none px-1 truncate"></p>
                <button type="button" id="cal-next" class="shrink-0 w-8 h-8 flex items-center justify-center rounded-full border border-gray-200 text-gray-700 hover:bg-gray-50 transition-colors" aria-label="Następny okres">
                    <i class="fas fa-chevron-right text-xs" aria-hidden="true"></i>
                </button>
            </div>
            <div class="px-3 pb-2 flex items-center justify-between gap-3">
                <button type="button" id="cal-go-today" title="Dziś" aria-label="Przejdź do dzisiejszego dnia"
                        class="h-6 shrink-0 inline-flex items-center justify-center gap-1 rounded-md border border-gray-200 bg-white px-2.5 text-[10px] font-semibold text-gray-700 shadow-sm hover:bg-gray-50 hover:text-gray-900 transition-colors">
                    <i class="fas fa-calendar-day text-[9px] opacity-70" aria-hidden="true"></i>
                    Dziś
                </button>
                <div id="planner-cal-mode" class="inline-flex items-center shrink-0 rounded-md border border-gray-200 bg-gray-50 p-px gap-px shadow-sm" role="tablist" aria-label="Skala kalendarza">
                    <button type="button" data-cal-mode="week" id="planner-mode-week" title="Tydzień" aria-label="Widok tygodnia"
                        class="planner-cal-mode-btn w-7 h-6 flex items-center justify-center rounded-[0.3125rem] transition-colors bg-white text-gray-900 shadow-sm">
                        <i class="fas fa-calendar-week text-[10px]" aria-hidden="true"></i>
                    </button>
                    <button type="button" data-cal-mode="month" id="planner-mode-month" title="Miesiąc" aria-label="Widok miesiąca"
                        class="planner-cal-mode-btn w-7 h-6 flex items-center justify-center rounded-[0.3125rem] transition-colors text-gray-400 hover:text-gray-600">
                        <i class="fas fa-calendar-days text-[10px]" aria-hidden="true"></i>
                    </button>
                </div>
            </div>
            <div id="calendar-week-wrap" class="px-3 pb-2.5">
                <div class="grid grid-cols-7 gap-0.5 text-center text-[9px] font-medium text-gray-400 uppercase tracking-wide mb-0.5 leading-none">
                    ${WEEKDAYS_SHORT.map((d) => `<div>${d}</div>`).join('')}
                </div>
                <div id="calendar-week-grid" class="grid grid-cols-7 gap-0.5"></div>
            </div>
            <div id="calendar-month-wrap" class="hidden px-3 pb-2.5">
                <div class="grid grid-cols-7 gap-0.5 text-center text-[9px] font-medium text-gray-400 uppercase tracking-wide mb-0.5 leading-none">
                    ${WEEKDAYS_SHORT.map((d) => `<div>${d}</div>`).join('')}
                </div>
                <div id="calendar-month-grid" class="grid grid-cols-7 gap-0.5"></div>
            </div>
        </div>

        <div id="planner-scroll" class="flex-1 overflow-y-auto px-4 pt-3 pb-4">
            <p id="planner-day-heading" class="text-sm font-semibold text-gray-900 tabular-nums mb-2"></p>
            <div id="planner-summary-card" class="rounded-xl border border-amber-200/80 bg-gradient-to-br from-amber-50 to-white p-3 shadow-sm mb-3">
                <div class="flex items-start justify-between gap-2 mb-2">
                    <div>
                        <p class="text-[10px] font-semibold uppercase tracking-wide text-amber-900/70">Dziś — podsumowanie</p>
                        <p id="planner-summary-kcal" class="text-2xl font-bold text-gray-900 tabular-nums leading-tight mt-0.5">0 <span class="text-sm font-semibold text-gray-500">kcal</span></p>
                    </div>
                    <button type="button" id="planner-toggle-nutrition" class="shrink-0 flex items-center gap-1 text-[11px] font-semibold text-amber-900/80 hover:text-gray-900 py-1 px-2 rounded-lg hover:bg-amber-100/50 transition-colors" aria-expanded="false">
                        Szczegóły
                        <i class="fas fa-chevron-down text-[9px] transition-transform" id="planner-nutrition-chevron" aria-hidden="true"></i>
                    </button>
                </div>
                <div id="planner-macro-row" class="flex gap-2 mb-0">
                    <div class="flex-1 min-w-0 rounded-lg bg-white/80 border border-amber-100 px-2 py-1.5 text-center">
                        <p class="text-[9px] font-semibold text-gray-500 uppercase">B</p>
                        <p id="planner-macro-p" class="text-xs font-bold text-gray-900 tabular-nums">0 g</p>
                    </div>
                    <div class="flex-1 min-w-0 rounded-lg bg-white/80 border border-amber-100 px-2 py-1.5 text-center">
                        <p class="text-[9px] font-semibold text-gray-500 uppercase">T</p>
                        <p id="planner-macro-f" class="text-xs font-bold text-gray-900 tabular-nums">0 g</p>
                    </div>
                    <div class="flex-1 min-w-0 rounded-lg bg-white/80 border border-amber-100 px-2 py-1.5 text-center">
                        <p class="text-[9px] font-semibold text-gray-500 uppercase">W</p>
                        <p id="planner-macro-c" class="text-xs font-bold text-gray-900 tabular-nums">0 g</p>
                    </div>
                </div>
                <div id="planner-nutrition-details" class="hidden mt-3 pt-3 border-t border-amber-200/60">
                    <ul class="space-y-0 divide-y divide-amber-100/80 text-sm">
                        <li class="flex justify-between py-2 font-bold"><span class="text-gray-800">Kalorie</span><span id="planner-detail-kcal" class="text-gray-900 tabular-nums">0 kcal</span></li>
                        <li class="flex justify-between py-2"><span class="text-gray-700 font-medium">Białko</span><span id="planner-detail-p" class="font-medium text-gray-900 tabular-nums">0 g</span></li>
                        <li class="flex justify-between py-2"><span class="text-gray-700 font-medium">Tłuszcze</span><span id="planner-detail-f" class="font-medium text-gray-900 tabular-nums">0 g</span></li>
                        <li class="flex justify-between py-2"><span class="text-gray-700 font-medium">Węglowodany</span><span id="planner-detail-c" class="font-medium text-gray-900 tabular-nums">0 g</span></li>
                    </ul>
                    <p id="planner-summary-hint" class="text-[11px] text-gray-500 mt-2">Suma z zaplanowanych posiłków (porcje × wartości z przepisu).</p>
                </div>
            </div>
            <button type="button" id="planner-open-ingredients" class="w-full mb-4 flex items-center justify-center gap-2 py-3 rounded-xl border border-dashed border-gray-300 bg-white text-sm font-semibold text-gray-800 hover:border-gray-400 hover:bg-gray-50 transition-colors">
                <i class="fas fa-shopping-basket text-gray-500" aria-hidden="true"></i>
                Składniki na ten dzień
            </button>
            <div id="planner-meal-slots" class="space-y-3 pb-2"></div>
        </div>

        <div id="planner-picker-backdrop" class="absolute left-0 right-0 top-0 z-[45] bg-black/45 hidden opacity-0 transition-opacity duration-200" style="bottom: ${PLANNER_SHEET_BOTTOM_INSET}" aria-hidden="true"></div>
        <div id="planner-picker-sheet" class="absolute left-0 right-0 z-[50] bg-white rounded-t-3xl shadow-[0_-10px_40px_rgba(0,0,0,0.12)] flex flex-col min-h-0 will-change-transform" style="bottom: ${PLANNER_SHEET_BOTTOM_INSET}; max-height: calc(100% - ${PLANNER_SHEET_BOTTOM_INSET}); transform: ${PLANNER_SHEET_OFF_TRANSFORM}; transition: transform 300ms cubic-bezier(0.32, 0.72, 0, 1)" role="dialog" aria-labelledby="planner-picker-title" aria-modal="true">
            <div class="shrink-0 p-4 pb-2 border-b border-gray-100 touch-none cursor-grab active:cursor-grabbing select-none" data-planner-sheet-drag-zone aria-label="Przeciągnij w dół, by zamknąć">
                <div class="w-10 h-1 bg-gray-200 rounded-full mx-auto mb-3" aria-hidden="true"></div>
                <h2 id="planner-picker-title" class="text-lg font-bold text-gray-900 leading-tight pr-2">Wybierz przepis</h2>
                <p id="planner-picker-sub" class="text-xs text-gray-500 mt-1"></p>
            </div>
            <div id="planner-picker-list" class="min-h-0 flex-1 overflow-y-auto no-scrollbar px-4 py-3 pb-8 space-y-2"></div>
        </div>

        <div id="planner-ing-backdrop" class="absolute left-0 right-0 top-0 z-[45] bg-black/45 hidden opacity-0 transition-opacity duration-200" style="bottom: ${PLANNER_SHEET_BOTTOM_INSET}" aria-hidden="true"></div>
        <div id="planner-ing-sheet" class="absolute left-0 right-0 z-[50] bg-white rounded-t-3xl shadow-[0_-10px_40px_rgba(0,0,0,0.12)] flex flex-col min-h-0 will-change-transform" style="bottom: ${PLANNER_SHEET_BOTTOM_INSET}; max-height: calc(100% - ${PLANNER_SHEET_BOTTOM_INSET}); transform: ${PLANNER_SHEET_OFF_TRANSFORM}; transition: transform 300ms cubic-bezier(0.32, 0.72, 0, 1)" role="dialog" aria-labelledby="planner-ing-title" aria-modal="true">
            <div class="shrink-0 p-4 pb-2 border-b border-gray-100 touch-none cursor-grab active:cursor-grabbing select-none" data-planner-sheet-drag-zone aria-label="Przeciągnij w dół, by zamknąć">
                <div class="w-10 h-1 bg-gray-200 rounded-full mx-auto mb-3" aria-hidden="true"></div>
                <h2 id="planner-ing-title" class="text-lg font-bold text-gray-900 leading-tight pr-2">Składniki na dziś</h2>
                <p class="text-xs text-gray-500 mt-1">Dodaj wszystko lub zaznacz wiersze. Zamknij: przeciągnij w dół lub dotknij tła.</p>
            </div>
            <div id="planner-ing-body" class="min-h-0 flex-1 overflow-y-auto no-scrollbar px-4 py-2 pb-2"></div>
            <div class="shrink-0 p-4 pt-2 pb-5 border-t border-gray-100 bg-white space-y-2">
                <button type="button" id="planner-ing-add-all" class="w-full bg-gray-900 hover:bg-black text-white py-3.5 rounded-xl font-semibold shadow-sm transition-colors text-sm flex items-center justify-center gap-2">
                    <i class="fas fa-cart-plus" aria-hidden="true"></i>
                    Dodaj wszystkie do listy zakupów
                </button>
                <button type="button" id="planner-ing-add-btn" class="w-full border border-gray-200 bg-white text-gray-800 hover:bg-gray-50 py-3 rounded-xl font-semibold text-sm flex items-center justify-center gap-2 transition-colors">
                    <i class="fas fa-check-square text-gray-500 text-xs" aria-hidden="true"></i>
                    Dodaj tylko zaznaczone
                </button>
            </div>
        </div>

        <div id="planner-toast" class="pointer-events-none absolute left-4 right-4 bottom-28 z-[55] opacity-0 translate-y-2 transition-all duration-300" role="status">
            <div class="rounded-xl bg-gray-900 text-white text-sm font-medium px-4 py-3 shadow-lg text-center" id="planner-toast-text"></div>
        </div>
    </div>
    `;
}

function renderWeekGrid(weekStart, selected, plans) {
    const grid = document.getElementById('calendar-week-grid');
    if (!grid) return;

    const cells = [];
    for (let i = 0; i < 7; i++) {
        const day = addDays(weekStart, i);
        const isSel = selected && sameDay(day, selected);
        const isToday = sameDay(day, new Date());
        const hasMeals = dayHasAnyMeal(plans, day);
        cells.push(`
            <button type="button" data-planner-day="${day.getTime()}"
                class="aspect-square flex flex-col items-center justify-center rounded-md text-xs font-medium transition-colors min-h-0 gap-0.5 py-1
                ${isSel ? 'bg-gray-900 text-white' : 'text-gray-800 hover:bg-gray-100'}
                ${isToday && !isSel ? 'ring-1 ring-inset ring-gray-900' : ''}">
                <span>${day.getDate()}</span>
                ${hasMeals ? `<span class="w-1 h-1 rounded-full ${isSel ? 'bg-white' : 'bg-gray-900'} opacity-80" aria-hidden="true"></span>` : '<span class="w-1 h-1" aria-hidden="true"></span>'}
            </button>
        `);
    }
    grid.innerHTML = cells.join('');
}

function renderMonthGrid(monthAnchor, selected, plans) {
    const grid = document.getElementById('calendar-month-grid');
    if (!grid) return;

    const first = startOfMonth(monthAnchor);
    const startGrid = startOfWeekMonday(first);
    const cells = [];
    for (let i = 0; i < 42; i++) {
        const day = addDays(startGrid, i);
        const inMonth = day.getMonth() === first.getMonth();
        const isSel = selected && sameDay(day, selected);
        const isToday = sameDay(day, new Date());
        const hasMeals = inMonth && dayHasAnyMeal(plans, day);
        cells.push(`
            <button type="button" data-planner-day="${day.getTime()}"
                class="aspect-square flex flex-col items-center justify-center rounded-md text-xs font-medium transition-colors min-h-0 gap-0.5 py-1
                ${!inMonth ? 'text-gray-300' : (isSel ? 'bg-gray-900 text-white' : 'text-gray-800 hover:bg-gray-100')}
                ${inMonth && isToday && !isSel ? 'ring-1 ring-inset ring-gray-900' : ''}">
                <span>${day.getDate()}</span>
                ${inMonth && hasMeals ? `<span class="w-1 h-1 rounded-full ${isSel ? 'bg-white' : 'bg-gray-900'} opacity-80" aria-hidden="true"></span>` : '<span class="w-1 h-1" aria-hidden="true"></span>'}
            </button>
        `);
    }
    grid.innerHTML = cells.join('');
}

function updatePeriodLabel(mode, weekStart, monthAnchor) {
    const el = document.getElementById('cal-period-label');
    if (!el) return;

    if (mode === 'week') {
        const end = addDays(weekStart, 6);
        const y = weekStart.getFullYear();
        if (weekStart.getMonth() === end.getMonth()) {
            el.textContent = `${weekStart.getDate()}–${end.getDate()} ${MONTHS_SHORT[weekStart.getMonth()]} ${y}`;
        } else {
            el.textContent = `${weekStart.getDate()} ${MONTHS_SHORT[weekStart.getMonth()]} – ${end.getDate()} ${MONTHS_SHORT[end.getMonth()]} ${y}`;
        }
    } else {
        const m = monthAnchor.getMonth();
        const y = monthAnchor.getFullYear();
        const monthLong = [
            'Styczeń', 'Luty', 'Marzec', 'Kwiecień', 'Maj', 'Czerwiec',
            'Lipiec', 'Sierpień', 'Wrzesień', 'Październik', 'Listopad', 'Grudzień',
        ][m];
        el.textContent = `${monthLong} ${y}`;
    }
}

function syncModeToggle(mode) {
    const w = document.getElementById('planner-mode-week');
    const m = document.getElementById('planner-mode-month');
    const weekWrap = document.getElementById('calendar-week-wrap');
    const monthWrap = document.getElementById('calendar-month-wrap');

    const base = 'planner-cal-mode-btn w-7 h-6 flex items-center justify-center rounded-[0.3125rem] transition-colors';
    const active = `${base} bg-white text-gray-900 shadow-sm`;
    const idle = `${base} text-gray-400 hover:text-gray-600`;

    if (w && m) {
        if (mode === 'week') {
            w.className = active;
            m.className = idle;
        } else {
            w.className = idle;
            m.className = active;
        }
    }
    if (weekWrap && monthWrap) {
        weekWrap.classList.toggle('hidden', mode !== 'week');
        monthWrap.classList.toggle('hidden', mode !== 'month');
    }
}

function bindDayClicks(container, state, rerender) {
    container?.addEventListener('click', (e) => {
        const btn = e.target.closest('[data-planner-day]');
        if (!btn) return;
        const ts = Number(btn.getAttribute('data-planner-day'));
        state.selected = new Date(ts);
        rerender();
    });
}

function showPlannerToast(message) {
    const wrap = document.getElementById('planner-toast');
    const text = document.getElementById('planner-toast-text');
    if (!wrap || !text) return;
    text.textContent = message;
    wrap.classList.remove('opacity-0', 'translate-y-2');
    wrap.classList.add('opacity-100', 'translate-y-0');
    clearTimeout(showPlannerToast._t);
    showPlannerToast._t = setTimeout(() => {
        wrap.classList.add('opacity-0', 'translate-y-2');
        wrap.classList.remove('opacity-100', 'translate-y-0');
    }, 2600);
}

function openSheet(backdrop, sheet) {
    if (!backdrop || !sheet) return;
    sheet.style.transition = 'transform 300ms cubic-bezier(0.32, 0.72, 0, 1)';
    sheet.style.transform = 'translateY(0)';
    backdrop.classList.remove('hidden');
    requestAnimationFrame(() => {
        backdrop.classList.remove('opacity-0');
    });
}

function closeSheet(backdrop, sheet) {
    if (!backdrop || !sheet) return;
    sheet.style.transition = 'transform 300ms cubic-bezier(0.32, 0.72, 0, 1)';
    sheet.style.transform = PLANNER_SHEET_OFF_TRANSFORM;
    backdrop.classList.add('opacity-0');
    setTimeout(() => backdrop.classList.add('hidden'), 300);
}

/** Zamykanie panelu: przeciągnięcie nagłówka w dół (pointer). */
function bindPlannerSheetDragClose(sheet, closeFn) {
    const zone = sheet.querySelector('[data-planner-sheet-drag-zone]');
    if (!zone || !sheet) return;

    let startY = 0;
    let pulling = false;
    let ptrId = null;

    const resetVisual = () => {
        sheet.style.transition = 'transform 300ms cubic-bezier(0.32, 0.72, 0, 1)';
        sheet.style.transform = 'translateY(0)';
    };

    zone.addEventListener('pointerdown', (e) => {
        if (e.pointerType === 'mouse' && e.button !== 0) return;
        pulling = true;
        ptrId = e.pointerId;
        startY = e.clientY;
        sheet.style.transition = 'none';
        zone.setPointerCapture(e.pointerId);
    });

    zone.addEventListener('pointermove', (e) => {
        if (!pulling || e.pointerId !== ptrId) return;
        const dy = Math.max(0, e.clientY - startY);
        sheet.style.transform = `translateY(${dy}px)`;
    });

    zone.addEventListener('pointerup', (e) => {
        if (!pulling || e.pointerId !== ptrId) return;
        const dy = e.clientY - startY;
        pulling = false;
        ptrId = null;
        try {
            zone.releasePointerCapture(e.pointerId);
        } catch {
            /* ignore */
        }
        if (dy > 56) {
            closeFn();
            return;
        }
        resetVisual();
    });

    zone.addEventListener('pointercancel', () => {
        pulling = false;
        ptrId = null;
        resetVisual();
    });
}

function renderDayContent(state) {
    const sel = state.selected;
    const heading = document.getElementById('planner-day-heading');
    if (heading) {
        const wd = WEEKDAYS_LONG[sel.getDay()];
        heading.textContent = `${wd}, ${sel.getDate()} ${MONTHS_SHORT[sel.getMonth()]}`;
    }

    const dayPlan = getDayPlan(state.plans, sel);
    const totals = sumDayNutrition(dayPlan);

    const kcalEl = document.getElementById('planner-summary-kcal');
    if (kcalEl) {
        kcalEl.innerHTML = totals.mealCount === 0
            ? `— <span class="text-sm font-semibold text-gray-500">kcal</span>`
            : `${totals.kcal} <span class="text-sm font-semibold text-gray-500">kcal</span>`;
    }
    const fmt = (n) => `${n} g`;
    document.getElementById('planner-macro-p').textContent = totals.mealCount ? fmt(totals.protein) : '—';
    document.getElementById('planner-macro-f').textContent = totals.mealCount ? fmt(totals.fat) : '—';
    document.getElementById('planner-macro-c').textContent = totals.mealCount ? fmt(totals.carbs) : '—';

    document.getElementById('planner-detail-kcal').textContent = `${totals.kcal} kcal`;
    document.getElementById('planner-detail-p').textContent = fmt(totals.protein);
    document.getElementById('planner-detail-f').textContent = fmt(totals.fat);
    document.getElementById('planner-detail-c').textContent = fmt(totals.carbs);

    const ingBtn = document.getElementById('planner-open-ingredients');
    if (ingBtn) {
        ingBtn.disabled = totals.mealCount === 0;
        ingBtn.classList.toggle('opacity-50', totals.mealCount === 0);
        ingBtn.classList.toggle('cursor-not-allowed', totals.mealCount === 0);
    }

    const slotsRoot = document.getElementById('planner-meal-slots');
    if (!slotsRoot) return;

    slotsRoot.innerHTML = MEAL_SLOTS.map((slot) => {
        const entries = Array.isArray(dayPlan[slot.id]) ? dayPlan[slot.id] : [];
        const countLabel = entries.length > 1
            ? `<span class="text-[10px] font-semibold text-gray-400 tabular-nums shrink-0 ml-auto">${entries.length} dania</span>`
            : '';

        const entryCards = entries.map((entry) => {
            const recipe = entry && entry.recipeId ? PLANNER_RECIPES[entry.recipeId] : null;
            if (!recipe) return '';
            const servings = Math.max(1, Number(entry.servings) || 1);
            const n = recipe.nutritionPerServing;
            const kcal = Math.round(n.kcal * servings);
            const eid = escapeHtml(entry.id);
            return `
            <div class="rounded-lg border border-gray-200 bg-white p-2.5 shadow-sm" data-slot-id="${slot.id}" data-entry-id="${eid}">
                <div class="flex items-start justify-between gap-2">
                    <div class="flex items-center gap-2 min-w-0">
                        <div class="w-9 h-9 rounded-lg bg-[#d4d4d4] flex items-center justify-center shrink-0">
                            <span class="text-white text-[9px] font-medium">${escapeHtml(recipe.thumbLabel)}</span>
                        </div>
                        <div class="min-w-0">
                            <p class="text-sm font-bold text-gray-900 truncate">${escapeHtml(recipe.title)}</p>
                            <p class="text-[11px] text-gray-500 mt-0.5 tabular-nums">
                                <i class="fas fa-clock text-gray-400 mr-0.5" aria-hidden="true"></i>${recipe.minutes} min
                                <span class="mx-1.5 text-gray-300">·</span>
                                <i class="fas fa-fire text-gray-400 mr-0.5" aria-hidden="true"></i>${kcal} kcal
                            </p>
                        </div>
                    </div>
                    <button type="button" class="planner-clear-meal w-7 h-7 shrink-0 rounded-full border border-gray-200 text-gray-400 hover:text-red-600 hover:border-red-200 hover:bg-red-50 transition-colors flex items-center justify-center" data-slot-id="${slot.id}" data-entry-id="${eid}" aria-label="Usuń ten przepis">
                        <i class="fas fa-times text-[10px]" aria-hidden="true"></i>
                    </button>
                </div>
                <div class="flex items-center justify-between gap-2 mt-2 pt-2 border-t border-gray-100">
                    <span class="text-[11px] font-medium text-gray-500">Porcje</span>
                    <div class="flex items-center gap-0.5 bg-gray-100 p-0.5 rounded-lg">
                        <button type="button" class="planner-serv-minus w-6 h-6 bg-white rounded-md shadow-sm flex items-center justify-center text-gray-600 hover:text-black" data-slot-id="${slot.id}" data-entry-id="${eid}" aria-label="Mniej porcji"><i class="fas fa-minus text-[9px]"></i></button>
                        <span class="planner-serv-count font-bold text-gray-900 text-xs w-5 text-center tabular-nums">${servings}</span>
                        <button type="button" class="planner-serv-plus w-6 h-6 bg-white rounded-md shadow-sm flex items-center justify-center text-gray-600 hover:text-black" data-slot-id="${slot.id}" data-entry-id="${eid}" aria-label="Więcej porcji"><i class="fas fa-plus text-[9px]"></i></button>
                    </div>
                </div>
            </div>`;
        }).join('');

        const addLabel = entries.length === 0 ? 'Dodaj przepis' : 'Dodaj kolejny przepis';
        const addClasses = entries.length === 0
            ? 'planner-add-meal w-full py-2.5 rounded-lg border border-dashed border-gray-200 text-sm font-semibold text-gray-700 hover:bg-gray-50 hover:border-gray-300 transition-colors'
            : 'planner-add-meal w-full py-2 rounded-lg border border-dashed border-gray-200 text-xs font-semibold text-gray-600 hover:bg-gray-50 hover:border-gray-300 transition-colors';

        return `
        <div class="rounded-xl border border-gray-200 bg-white shadow-sm overflow-hidden" data-slot-id="${slot.id}">
            <div class="flex items-center gap-2 px-3 py-2.5 border-b border-gray-100 bg-gray-50/90">
                <span class="w-8 h-8 rounded-lg bg-gray-100 flex items-center justify-center text-gray-500 shrink-0">
                    <i class="fas ${slot.icon} text-sm" aria-hidden="true"></i>
                </span>
                <span class="text-sm font-semibold text-gray-900 truncate min-w-0 flex-1">${slot.label}</span>
                ${countLabel}
            </div>
            <div class="p-3 space-y-2">
                ${entryCards}
                <button type="button" class="${addClasses}" data-slot-id="${slot.id}">
                    <i class="fas fa-plus text-[10px] mr-1 opacity-70" aria-hidden="true"></i>
                    ${addLabel}
                </button>
            </div>
        </div>`;
    }).join('');
}

function escapeHtml(s) {
    return String(s)
        .replace(/&/g, '&amp;')
        .replace(/</g, '&lt;')
        .replace(/>/g, '&gt;')
        .replace(/"/g, '&quot;');
}

function renderPickerList(slotId) {
    const slot = MEAL_SLOTS.find((s) => s.id === slotId);
    const list = document.getElementById('planner-picker-list');
    const title = document.getElementById('planner-picker-title');
    const sub = document.getElementById('planner-picker-sub');
    if (!list || !title || !sub) return;

    title.textContent = 'Wybierz przepis';
    sub.textContent = slot ? `Dla: ${slot.label}. Przeciągnij nagłówek w dół lub dotknij tła, by zamknąć.` : '';

    const recipes = recipesForSlot(slotId);
    if (recipes.length === 0) {
        list.innerHTML = '<p class="text-sm text-gray-500 text-center py-6">Brak dopasowanych przepisów.</p>';
        return;
    }

    list.innerHTML = recipes.map((r) => `
        <button type="button" class="planner-pick-recipe w-full flex gap-3 p-3 rounded-xl border border-gray-200 bg-gray-50/80 hover:border-gray-900 hover:bg-white text-left transition-all" data-recipe-id="${r.id}">
            <div class="w-14 h-14 rounded-lg bg-[#d4d4d4] flex items-center justify-center shrink-0">
                <span class="text-white text-[10px] font-medium">${escapeHtml(r.thumbLabel)}</span>
            </div>
            <div class="min-w-0 flex-1 py-0.5">
                <p class="text-sm font-bold text-gray-900 line-clamp-2">${escapeHtml(r.title)}</p>
                <p class="text-[11px] text-gray-500 mt-1 tabular-nums">
                    <i class="fas fa-fire text-gray-400 mr-0.5" aria-hidden="true"></i>${r.nutritionPerServing.kcal} kcal
                    <span class="mx-1 text-gray-300">·</span>
                    <i class="fas fa-clock text-gray-400 mr-0.5" aria-hidden="true"></i>${r.minutes} min
                </p>
            </div>
        </button>
    `).join('');
}

function renderIngredientsSheet(state) {
    const body = document.getElementById('planner-ing-body');
    if (!body) return;

    const dayPlan = getDayPlan(state.plans, state.selected);
    const blocks = aggregateDayIngredientsBySlot(dayPlan);

    if (blocks.length === 0) {
        body.innerHTML = '<p class="text-sm text-gray-500 text-center py-8">Najpierw zaplanuj posiłki.</p>';
        return;
    }

    body.innerHTML = blocks.map((block) => `
        <div class="mb-6 last:mb-2">
            <p class="text-xs font-bold text-gray-400 uppercase tracking-wide mb-2">${escapeHtml(block.mealLabel)}</p>
            <div class="space-y-3">
                ${block.recipes.map((rec) => `
                <div>
                    <p class="text-sm font-semibold text-gray-800 mb-1.5">${escapeHtml(rec.recipeTitle)}</p>
                    <ul class="space-y-0 border border-gray-100 rounded-xl overflow-hidden bg-white">
                        ${rec.items.map((ing) => `
                        <li class="flex items-center gap-3 py-3 px-3 border-b border-gray-100 last:border-b-0 cursor-pointer hover:bg-gray-50 transition-colors planner-ing-row">
                            <div class="w-5 h-5 rounded border border-gray-300 flex items-center justify-center text-white check-box transition-colors shrink-0"><i class="fas fa-check text-[10px] hidden check-icon"></i></div>
                            <span class="text-gray-700 text-sm flex-1 ingredient-text transition-colors">${escapeHtml(ing.name)}</span>
                            <span class="font-medium text-gray-900 text-sm tabular-nums">${formatAmount(ing.amount)} ${escapeHtml(ing.unit)}</span>
                        </li>
                        `).join('')}
                    </ul>
                </div>
                `).join('')}
            </div>
        </div>
    `).join('');
}

function formatAmount(n) {
    return Number.isInteger(n) ? String(n) : String(n);
}

function seedDemoIfEmpty(plans) {
    const todayKey = dateKey(new Date());
    if (Object.keys(plans).length > 0) return plans;
    return {
        ...plans,
        [todayKey]: {
            sniadanie: [{ id: newPlanEntryId(), recipeId: 'owsianka', servings: 1 }],
            obiad: [{ id: newPlanEntryId(), recipeId: 'salatka', servings: 1 }],
            kolacja: [{ id: newPlanEntryId(), recipeId: 'makaron', servings: 1 }],
        },
    };
}

export function setupMealPlanner() {
    let plans = loadPlans();
    plans = seedDemoIfEmpty(plans);
    savePlans(plans);

    const state = {
        mode: 'week',
        weekStart: startOfWeekMonday(new Date()),
        monthAnchor: startOfDay(new Date()),
        selected: startOfDay(new Date()),
        plans,
        nutritionExpanded: false,
        pickerSlot: null,
    };

    const weekGrid = document.getElementById('calendar-week-grid');
    const monthGrid = document.getElementById('calendar-month-grid');

    const pickerBackdrop = document.getElementById('planner-picker-backdrop');
    const pickerSheet = document.getElementById('planner-picker-sheet');
    const ingBackdrop = document.getElementById('planner-ing-backdrop');
    const ingSheet = document.getElementById('planner-ing-sheet');

    const rerender = () => {
        syncModeToggle(state.mode);
        updatePeriodLabel(state.mode, state.weekStart, state.monthAnchor);
        syncTodayButton(state.mode, state.weekStart, state.monthAnchor, state.selected);
        if (state.mode === 'week') {
            renderWeekGrid(state.weekStart, state.selected, state.plans);
        } else {
            renderMonthGrid(state.monthAnchor, state.selected, state.plans);
        }
        renderDayContent(state);
    };

    const persist = () => {
        savePlans(state.plans);
        rerender();
    };

    bindDayClicks(weekGrid?.parentElement, state, rerender);
    bindDayClicks(monthGrid?.parentElement, state, rerender);

    document.getElementById('planner-cal-mode')?.addEventListener('click', (e) => {
        const btn = e.target.closest('[data-cal-mode]');
        if (!btn) return;
        const mode = btn.getAttribute('data-cal-mode');
        if (mode !== 'week' && mode !== 'month') return;
        state.mode = mode;
        if (mode === 'week') {
            state.weekStart = startOfWeekMonday(state.selected);
        } else {
            state.monthAnchor = startOfMonth(state.selected);
        }
        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;
        state.weekStart = startOfWeekMonday(today);
        state.monthAnchor = startOfMonth(today);
        rerender();
    });

    document.getElementById('planner-toggle-nutrition')?.addEventListener('click', () => {
        state.nutritionExpanded = !state.nutritionExpanded;
        const details = document.getElementById('planner-nutrition-details');
        const chev = document.getElementById('planner-nutrition-chevron');
        const btn = document.getElementById('planner-toggle-nutrition');
        if (details) details.classList.toggle('hidden', !state.nutritionExpanded);
        if (chev) chev.classList.toggle('rotate-180', state.nutritionExpanded);
        if (btn) btn.setAttribute('aria-expanded', state.nutritionExpanded ? 'true' : 'false');
    });

    document.getElementById('planner-meal-slots')?.addEventListener('click', (e) => {
        const addBtn = e.target.closest('.planner-add-meal');
        if (addBtn) {
            const slotId = addBtn.getAttribute('data-slot-id');
            state.pickerSlot = slotId;
            renderPickerList(slotId);
            openSheet(pickerBackdrop, pickerSheet);
            return;
        }
        const clearBtn = e.target.closest('.planner-clear-meal');
        if (clearBtn) {
            const slotId = clearBtn.getAttribute('data-slot-id');
            const entryId = clearBtn.getAttribute('data-entry-id');
            const key = dateKey(state.selected);
            const arr = state.plans[key]?.[slotId];
            if (!Array.isArray(arr) || !entryId) return;
            const next = arr.filter((x) => x && x.id !== entryId);
            if (!state.plans[key]) state.plans[key] = {};
            if (next.length === 0) delete state.plans[key][slotId];
            else state.plans[key][slotId] = next;
            if (Object.keys(state.plans[key]).length === 0) delete state.plans[key];
            persist();
            return;
        }
        const minus = e.target.closest('.planner-serv-minus');
        const plus = e.target.closest('.planner-serv-plus');
        const slotId = (minus || plus)?.getAttribute('data-slot-id');
        const entryId = (minus || plus)?.getAttribute('data-entry-id');
        if (!slotId || !entryId) return;
        const key = dateKey(state.selected);
        const arr = state.plans[key]?.[slotId];
        if (!Array.isArray(arr)) return;
        const entry = arr.find((x) => x && x.id === entryId);
        if (!entry) return;
        let s = Math.max(1, Number(entry.servings) || 1);
        if (minus) s = Math.max(1, s - 1);
        if (plus) s = Math.min(12, s + 1);
        entry.servings = s;
        persist();
    });

    const closePicker = () => {
        state.pickerSlot = null;
        closeSheet(pickerBackdrop, pickerSheet);
    };

    bindPlannerSheetDragClose(pickerSheet, closePicker);
    bindPlannerSheetDragClose(ingSheet, () => closeSheet(ingBackdrop, ingSheet));

    pickerBackdrop?.addEventListener('click', closePicker);

    document.getElementById('planner-picker-list')?.addEventListener('click', (e) => {
        const pick = e.target.closest('.planner-pick-recipe');
        if (!pick || !state.pickerSlot) return;
        const recipeId = pick.getAttribute('data-recipe-id');
        if (!recipeId || !PLANNER_RECIPES[recipeId]) return;
        const key = dateKey(state.selected);
        if (!state.plans[key]) state.plans[key] = {};
        const slotId = state.pickerSlot;
        if (!state.plans[key][slotId]) state.plans[key][slotId] = [];
        state.plans[key][slotId].push({ id: newPlanEntryId(), recipeId, servings: 1 });
        closePicker();
        persist();
    });

    document.getElementById('planner-open-ingredients')?.addEventListener('click', () => {
        if (sumDayNutrition(getDayPlan(state.plans, state.selected)).mealCount === 0) return;
        renderIngredientsSheet(state);
        openSheet(ingBackdrop, ingSheet);
    });

    ingBackdrop?.addEventListener('click', () => {
        closeSheet(ingBackdrop, ingSheet);
    });

    ingSheet?.addEventListener('click', (e) => {
        const row = e.target.closest('.planner-ing-row');
        if (!row || !ingSheet.contains(row)) return;
        row.classList.toggle('ingredient-active');
    });

    document.getElementById('planner-ing-add-all')?.addEventListener('click', () => {
        const body = document.getElementById('planner-ing-body');
        const rows = body?.querySelectorAll('.planner-ing-row');
        const n = rows?.length ?? 0;
        if (n === 0) return;
        showPlannerToast(`Dodano ${n} składników do listy (zakładka Zakupy w przygotowaniu).`);
        closeSheet(ingBackdrop, ingSheet);
    });

    document.getElementById('planner-ing-add-btn')?.addEventListener('click', () => {
        const body = document.getElementById('planner-ing-body');
        const selected = body?.querySelectorAll('.planner-ing-row.ingredient-active');
        const n = selected?.length ?? 0;
        if (n === 0) {
            showPlannerToast('Zaznacz składniki na liście albo użyj „Dodaj wszystkie”.');
            return;
        }
        showPlannerToast(`Dodano ${n} zaznaczonych pozycji do listy (zakładka Zakupy w przygotowaniu).`);
        closeSheet(ingBackdrop, ingSheet);
    });

    rerender();
}