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+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
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+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

@@ -0,0 +1,1206 @@
+const STORAGE_KEY = "kcal-intakes-v1";
+const THEME_KEY = "kcal-theme-v1";
+const GOALS_KEY = "kcal-goals-v1";
+const FOODS_URL = "foods.json";
+const DEFAULT_GOALS = { kcal: 2200, protein: 140, carbs: 220, fat: 70, sugar: 60 };
+
+const state = {
+  foods: [],
+  intakes: [],
+  selectedDate: "",
+  theme: "light",
+  goals: { ...DEFAULT_GOALS },
+  foodSuggestionIndex: -1,
+};
+
+const elements = {
+  foodInput: document.getElementById("food-input"),
+  gramsInput: document.getElementById("grams-input"),
+  foodSuggestions: document.getElementById("food-suggestions"),
+  foodHint: document.getElementById("food-hint"),
+  previewBase: document.getElementById("preview-base"),
+  previewScaled: document.getElementById("preview-scaled"),
+  addForm: document.getElementById("add-intake"),
+  intakeForm: document.getElementById("intake-form"),
+  entryDate: document.getElementById("entry-date"),
+  todayDate: document.getElementById("today-date"),
+  todaySelectDate: document.getElementById("today-select-date"),
+  todayTotals: document.getElementById("today-totals"),
+  todayList: document.getElementById("today-list"),
+  historyTotals: document.getElementById("history-totals"),
+  historyBreakdown: document.getElementById("history-breakdown"),
+  historyKcalChart: document.getElementById("history-kcal-chart"),
+  historyMacroChart: document.getElementById("history-macro-chart"),
+  kcalChartCard: document.getElementById("kcal-chart-card"),
+  macroChartCard: document.getElementById("macro-chart-card"),
+  settingsView: document.getElementById("settings-view"),
+  goalsForm: document.getElementById("goals-form"),
+  goalKcal: document.getElementById("goal-kcal"),
+  goalProtein: document.getElementById("goal-protein"),
+  goalCarbs: document.getElementById("goal-carbs"),
+  goalFat: document.getElementById("goal-fat"),
+  goalSugar: document.getElementById("goal-sugar"),
+  goalsHint: document.getElementById("goals-hint"),
+  exportDataButton: document.getElementById("export-data"),
+  importDataButton: document.getElementById("import-data"),
+  importFileInput: document.getElementById("import-file"),
+  rangeSelect: document.getElementById("range-select"),
+  anchorDate: document.getElementById("anchor-date"),
+  themeToggle: document.getElementById("theme-toggle"),
+  tabs: document.querySelectorAll(".tab"),
+  todayView: document.getElementById("today-view"),
+  historyView: document.getElementById("history-view"),
+  rowTemplate: document.getElementById("intake-row"),
+};
+
+const toISODate = (date) => date.toISOString().slice(0, 10);
+
+const fmtDate = (date) =>
+  date.toLocaleDateString(undefined, {
+    weekday: "short",
+    month: "short",
+    day: "numeric",
+  });
+
+const fmtRange = (start, end) => {
+  const options = { month: "short", day: "numeric" };
+  const startLabel = start.toLocaleDateString(undefined, options);
+  const endLabel = end.toLocaleDateString(undefined, options);
+  if (startLabel === endLabel) return startLabel;
+  return `${startLabel} - ${endLabel}`;
+};
+
+const fromISODate = (dateKey) => new Date(`${dateKey}T00:00:00`);
+
+const fmtChartDate = (dateKey) =>
+  fromISODate(dateKey).toLocaleDateString(undefined, {
+    month: "numeric",
+    day: "numeric",
+  });
+const SVG_NS = "http://www.w3.org/2000/svg";
+
+const loadIntakes = () => {
+  const raw = localStorage.getItem(STORAGE_KEY);
+  const parsed = raw ? JSON.parse(raw) : [];
+  state.intakes = Array.isArray(parsed)
+    ? parsed
+        .filter((entry) => entry && typeof entry === "object")
+        .map((entry) => ({
+          ...entry,
+          sugar: typeof entry.sugar === "number" ? entry.sugar : 0,
+        }))
+    : [];
+};
+
+const saveIntakes = () => {
+  localStorage.setItem(STORAGE_KEY, JSON.stringify(state.intakes));
+};
+
+const loadTheme = () => {
+  const savedTheme = localStorage.getItem(THEME_KEY);
+  if (savedTheme === "light" || savedTheme === "dark") {
+    state.theme = savedTheme;
+    return;
+  }
+  state.theme = window.matchMedia("(prefers-color-scheme: dark)").matches
+    ? "dark"
+    : "light";
+};
+
+const saveTheme = () => {
+  localStorage.setItem(THEME_KEY, state.theme);
+};
+
+const normalizeGoals = (rawGoals) => {
+  const base = { ...DEFAULT_GOALS };
+  if (!rawGoals || typeof rawGoals !== "object") return base;
+
+  const goalKeys = ["kcal", "protein", "carbs", "fat", "sugar"];
+  goalKeys.forEach((key) => {
+    const value = Number(rawGoals[key]);
+    if (Number.isFinite(value) && value >= 0) base[key] = value;
+  });
+  return base;
+};
+
+const loadGoals = () => {
+  const rawGoals = localStorage.getItem(GOALS_KEY);
+  state.goals = rawGoals ? normalizeGoals(JSON.parse(rawGoals)) : { ...DEFAULT_GOALS };
+};
+
+const saveGoals = () => {
+  localStorage.setItem(GOALS_KEY, JSON.stringify(state.goals));
+};
+
+const getLatestIntakeDate = () => {
+  if (!state.intakes.length) return toISODate(new Date());
+  return state.intakes.reduce(
+    (latest, entry) => (entry.date > latest ? entry.date : latest),
+    state.intakes[0].date
+  );
+};
+
+const createBackupPayload = () => ({
+  app: "macros",
+  version: 1,
+  exportedAt: new Date().toISOString(),
+  storage: {
+    [STORAGE_KEY]: state.intakes,
+    [THEME_KEY]: state.theme,
+    [GOALS_KEY]: state.goals,
+  },
+});
+
+const parseImportedPayload = (payload) => {
+  if (!payload || typeof payload !== "object") return null;
+
+  const source =
+    payload.storage && typeof payload.storage === "object"
+      ? payload.storage
+      : payload;
+
+  let importedIntakes = source[STORAGE_KEY] ?? source.intakes;
+  let importedTheme = source[THEME_KEY] ?? source.theme;
+  let importedGoals = source[GOALS_KEY] ?? source.goals;
+
+  if (typeof importedIntakes === "string") {
+    importedIntakes = JSON.parse(importedIntakes);
+  }
+  if (typeof importedTheme === "string") {
+    importedTheme = importedTheme.trim().toLowerCase();
+  }
+  if (typeof importedGoals === "string") {
+    importedGoals = JSON.parse(importedGoals);
+  }
+
+  if (!Array.isArray(importedIntakes)) return null;
+  if (importedTheme !== "light" && importedTheme !== "dark") importedTheme = "light";
+
+  const intakes = importedIntakes
+    .filter(
+      (entry) =>
+        entry &&
+        typeof entry === "object" &&
+        typeof entry.food === "string" &&
+        typeof entry.date === "string" &&
+        typeof entry.grams === "number" &&
+        typeof entry.kcal === "number" &&
+        typeof entry.protein === "number" &&
+        typeof entry.carbs === "number" &&
+        typeof entry.fat === "number"
+    )
+    .map((entry) => ({
+      id: typeof entry.id === "string" ? entry.id : createEntryId(),
+      food: entry.food,
+      grams: entry.grams,
+      date: entry.date,
+      kcal: entry.kcal,
+      protein: entry.protein,
+      carbs: entry.carbs,
+      fat: entry.fat,
+      sugar: typeof entry.sugar === "number" ? entry.sugar : 0,
+    }));
+
+  return { intakes, theme: importedTheme, goals: normalizeGoals(importedGoals) };
+};
+
+const findFood = (name) =>
+  state.foods.find((food) => food.name.toLowerCase() === name.toLowerCase());
+
+const fmtMacroLine = (macros) =>
+  `kcal ${macros.kcal.toFixed(0)} · P ${macros.protein.toFixed(
+    1
+  )}g · C ${macros.carbs.toFixed(1)}g · S ${macros.sugar.toFixed(
+    1
+  )}g · F ${macros.fat.toFixed(1)}g`;
+
+const renderIntakePreview = () => {
+  const name = elements.foodInput.value.trim();
+  const grams = Number(elements.gramsInput.value);
+
+  if (!name) {
+    elements.previewBase.textContent = "Select a food to preview macros.";
+    elements.previewScaled.textContent = "Enter grams to see calculated macros.";
+    return;
+  }
+
+  const food = findFood(name);
+  if (!food) {
+    elements.previewBase.textContent = "Food not found in list.";
+    elements.previewScaled.textContent = "Choose a listed food to calculate values.";
+    return;
+  }
+
+  elements.previewBase.textContent = fmtMacroLine(food);
+
+  if (!Number.isFinite(grams) || grams <= 0) {
+    elements.previewScaled.textContent = "Enter a valid grams value.";
+    return;
+  }
+
+  elements.previewScaled.textContent = fmtMacroLine(calcFromFood(food, grams));
+};
+
+const getFilteredFoods = (query) => {
+  const normalized = query.trim().toLowerCase();
+  if (!normalized) return state.foods.slice(0, 12);
+
+  const startsWith = state.foods.filter((food) =>
+    food.name.toLowerCase().startsWith(normalized)
+  );
+  const includes = state.foods.filter(
+    (food) =>
+      !food.name.toLowerCase().startsWith(normalized) &&
+      food.name.toLowerCase().includes(normalized)
+  );
+  return [...startsWith, ...includes].slice(0, 12);
+};
+
+const hideFoodSuggestions = () => {
+  elements.foodSuggestions.classList.add("hidden");
+  elements.foodSuggestions.innerHTML = "";
+  state.foodSuggestionIndex = -1;
+};
+
+const selectFoodSuggestion = (foodName) => {
+  elements.foodInput.value = foodName;
+  hideFoodSuggestions();
+  renderIntakePreview();
+};
+
+const renderFoodSuggestions = (query) => {
+  const foods = getFilteredFoods(query);
+  state.foodSuggestionIndex = -1;
+  elements.foodSuggestions.innerHTML = "";
+
+  if (!foods.length) {
+    hideFoodSuggestions();
+    return;
+  }
+
+  foods.forEach((food, index) => {
+    const option = document.createElement("button");
+    option.type = "button";
+    option.className = "food-suggestion";
+    option.textContent = food.name;
+    option.dataset.index = String(index);
+    option.addEventListener("mousedown", (event) => {
+      event.preventDefault();
+      selectFoodSuggestion(food.name);
+    });
+    elements.foodSuggestions.appendChild(option);
+  });
+
+  elements.foodSuggestions.classList.remove("hidden");
+};
+
+const moveFoodSuggestionSelection = (direction) => {
+  const options = Array.from(
+    elements.foodSuggestions.querySelectorAll(".food-suggestion")
+  );
+  if (!options.length) return;
+
+  if (elements.foodSuggestions.classList.contains("hidden")) {
+    renderFoodSuggestions(elements.foodInput.value);
+    return;
+  }
+
+  state.foodSuggestionIndex += direction;
+  if (state.foodSuggestionIndex < 0) state.foodSuggestionIndex = options.length - 1;
+  if (state.foodSuggestionIndex >= options.length) state.foodSuggestionIndex = 0;
+
+  options.forEach((option, idx) =>
+    option.classList.toggle("active", idx === state.foodSuggestionIndex)
+  );
+};
+
+const pickActiveFoodSuggestion = () => {
+  if (state.foodSuggestionIndex < 0) return false;
+  const active = elements.foodSuggestions.querySelector(".food-suggestion.active");
+  if (!active) return false;
+  selectFoodSuggestion(active.textContent);
+  return true;
+};
+
+const initFoodAutocomplete = () => {
+  elements.foodInput.addEventListener("focus", () => {
+    renderFoodSuggestions(elements.foodInput.value);
+  });
+
+  elements.foodInput.addEventListener("input", () => {
+    renderFoodSuggestions(elements.foodInput.value);
+  });
+
+  elements.foodInput.addEventListener("keydown", (event) => {
+    if (event.key === "ArrowDown") {
+      event.preventDefault();
+      moveFoodSuggestionSelection(1);
+      return;
+    }
+
+    if (event.key === "ArrowUp") {
+      event.preventDefault();
+      moveFoodSuggestionSelection(-1);
+      return;
+    }
+
+    if (event.key === "Enter" && pickActiveFoodSuggestion()) {
+      event.preventDefault();
+      return;
+    }
+
+    if (event.key === "Escape") {
+      hideFoodSuggestions();
+    }
+  });
+
+  elements.foodInput.addEventListener("blur", () => {
+    setTimeout(hideFoodSuggestions, 100);
+  });
+};
+
+const calcFromFood = (food, grams) => {
+  const ratio = grams / 100;
+  return {
+    kcal: food.kcal * ratio,
+    protein: food.protein * ratio,
+    carbs: food.carbs * ratio,
+    fat: food.fat * ratio,
+    sugar: (food.sugar || 0) * ratio,
+  };
+};
+
+const createEntryId = () => {
+  if (globalThis.crypto && typeof globalThis.crypto.randomUUID === "function") {
+    return globalThis.crypto.randomUUID();
+  }
+
+  return `entry-${Date.now()}-${Math.random().toString(16).slice(2)}`;
+};
+
+const aggregateTotals = (items) =>
+  items.reduce(
+    (acc, item) => {
+      acc.kcal += item.kcal;
+      acc.protein += item.protein;
+      acc.carbs += item.carbs;
+      acc.fat += item.fat;
+      acc.sugar += item.sugar || 0;
+      return acc;
+    },
+    { kcal: 0, protein: 0, carbs: 0, fat: 0, sugar: 0 }
+  );
+
+const median = (values) => {
+  if (!values.length) return 0;
+  const sorted = values.slice().sort((a, b) => a - b);
+  const mid = Math.floor(sorted.length / 2);
+  if (sorted.length % 2 === 0) {
+    return (sorted[mid - 1] + sorted[mid]) / 2;
+  }
+  return sorted[mid];
+};
+
+const getDateKeysInRange = (start, end) => {
+  const keys = [];
+  const cursor = new Date(start);
+  while (cursor <= end) {
+    keys.push(toISODate(cursor));
+    cursor.setDate(cursor.getDate() + 1);
+  }
+  return keys;
+};
+
+const ensureChartTooltip = (chartCard) => {
+  let tooltip = chartCard.querySelector(".chart-tooltip");
+  if (!tooltip) {
+    tooltip = document.createElement("div");
+    tooltip.className = "chart-tooltip hidden";
+    chartCard.appendChild(tooltip);
+  }
+  return tooltip;
+};
+
+const showChartTooltip = (chartCard, text, event) => {
+  const tooltip = ensureChartTooltip(chartCard);
+  tooltip.textContent = text;
+  tooltip.classList.remove("hidden");
+
+  const rect = chartCard.getBoundingClientRect();
+  const left = Math.max(
+    8,
+    Math.min(event.clientX - rect.left + 10, rect.width - 180)
+  );
+  const top = Math.max(
+    8,
+    Math.min(event.clientY - rect.top - 34, rect.height - 38)
+  );
+
+  tooltip.style.left = `${left}px`;
+  tooltip.style.top = `${top}px`;
+};
+
+const hideChartTooltip = (chartCard) => {
+  const tooltip = chartCard.querySelector(".chart-tooltip");
+  if (tooltip) tooltip.classList.add("hidden");
+};
+
+const getGoalStatus = (value, goal, metric) => {
+  const tolerance = metric === "kcal" ? 1 : 0.1;
+  if (value > goal + tolerance) return "over";
+  if (value < goal - tolerance) return "under";
+  return "on";
+};
+
+const goalDeltaLabel = (value, goal, unit, metric) => {
+  const delta = value - goal;
+  const status = getGoalStatus(value, goal, metric);
+  if (status === "on") return `On goal (${goal.toFixed(0)}${unit})`;
+  const direction = status === "over" ? "Over" : "Under";
+  return `${direction} by ${Math.abs(delta).toFixed(1)}${unit}`;
+};
+
+const renderGoalsForm = () => {
+  elements.goalKcal.value = state.goals.kcal.toFixed(0);
+  elements.goalProtein.value = state.goals.protein.toFixed(0);
+  elements.goalCarbs.value = state.goals.carbs.toFixed(0);
+  elements.goalFat.value = state.goals.fat.toFixed(0);
+  elements.goalSugar.value = state.goals.sugar.toFixed(0);
+};
+
+const renderCaloriesChart = (series) => {
+  elements.historyKcalChart.innerHTML = "";
+  hideChartTooltip(elements.kcalChartCard);
+
+  const hasData = series.some((day) => day.kcal > 0);
+
+  if (!hasData) {
+    elements.historyKcalChart.innerHTML =
+      '<p class="hint">No data for this chart range.</p>';
+    return;
+  }
+
+  const maxKcal = Math.max(...series.map((day) => day.kcal), 1);
+  const kcalGoal = Math.max(state.goals.kcal, 0);
+  const maxScale = Math.max(maxKcal, kcalGoal, 1);
+  const width = Math.max(320, series.length * 44);
+  const height = 180;
+  const pad = { top: 12, right: 12, bottom: 28, left: 20 };
+  const plotW = width - pad.left - pad.right;
+  const plotH = height - pad.top - pad.bottom;
+  const step = series.length > 1 ? plotW / (series.length - 1) : 0;
+  const points = series.map((day, index) => ({
+    day,
+    x: pad.left + step * index,
+    y: pad.top + plotH - (day.kcal / maxScale) * plotH,
+  }));
+
+  const svg = document.createElementNS(SVG_NS, "svg");
+  svg.setAttribute("viewBox", `0 0 ${width} ${height}`);
+  svg.setAttribute("class", "line-chart-svg");
+
+  const axis = document.createElementNS(SVG_NS, "line");
+  axis.setAttribute("x1", String(pad.left));
+  axis.setAttribute("x2", String(width - pad.right));
+  axis.setAttribute("y1", String(height - pad.bottom));
+  axis.setAttribute("y2", String(height - pad.bottom));
+  axis.setAttribute("class", "line-axis");
+  svg.appendChild(axis);
+
+  const linePath = points
+    .map((point, index) =>
+      `${index === 0 ? "M" : "L"} ${point.x.toFixed(2)} ${point.y.toFixed(2)}`
+    )
+    .join(" ");
+
+  const path = document.createElementNS(SVG_NS, "path");
+  path.setAttribute("d", linePath);
+  path.setAttribute("class", "line-path");
+  svg.appendChild(path);
+
+  if (kcalGoal > 0) {
+    const goalY = pad.top + plotH - (kcalGoal / maxScale) * plotH;
+    const goalLine = document.createElementNS(SVG_NS, "line");
+    goalLine.setAttribute("x1", String(pad.left));
+    goalLine.setAttribute("x2", String(width - pad.right));
+    goalLine.setAttribute("y1", String(goalY));
+    goalLine.setAttribute("y2", String(goalY));
+    goalLine.setAttribute("class", "goal-line");
+    svg.appendChild(goalLine);
+  }
+
+  points.forEach((point) => {
+    const circle = document.createElementNS(SVG_NS, "circle");
+    circle.setAttribute("cx", point.x.toFixed(2));
+    circle.setAttribute("cy", point.y.toFixed(2));
+    circle.setAttribute("r", "3.5");
+    const goalStatus = getGoalStatus(point.day.kcal, state.goals.kcal, "kcal");
+    const trendClass = `goal-${goalStatus}`;
+    circle.setAttribute("class", `line-point ${trendClass}`);
+    const pointLabel = `${fmtChartDate(point.day.date)}: ${point.day.kcal.toFixed(
+      0
+    )} kcal · ${goalDeltaLabel(point.day.kcal, state.goals.kcal, " kcal", "kcal")}`;
+    circle.addEventListener("mouseenter", (event) =>
+      showChartTooltip(elements.kcalChartCard, pointLabel, event)
+    );
+    circle.addEventListener("mousemove", (event) =>
+      showChartTooltip(elements.kcalChartCard, pointLabel, event)
+    );
+    circle.addEventListener("mouseleave", () =>
+      hideChartTooltip(elements.kcalChartCard)
+    );
+    svg.appendChild(circle);
+  });
+
+  const scroll = document.createElement("div");
+  scroll.className = "line-chart-scroll";
+  scroll.appendChild(svg);
+  elements.historyKcalChart.appendChild(scroll);
+
+  const labels = document.createElement("div");
+  labels.className = "line-chart-labels";
+  labels.innerHTML = `<span>${fmtChartDate(series[0].date)}</span><span>${fmtChartDate(
+    series[series.length - 1].date
+  )}</span>`;
+  elements.historyKcalChart.appendChild(labels);
+};
+
+const renderMacroChart = (series) => {
+  elements.historyMacroChart.innerHTML = "";
+  hideChartTooltip(elements.macroChartCard);
+
+  const macroKcals = series.map((day) => ({
+    ...day,
+    proteinKcal: day.protein * 4,
+    carbsKcal: day.carbs * 4,
+    fatKcal: day.fat * 9,
+  }));
+  const maxTotal = Math.max(
+    ...macroKcals.map((day) => day.proteinKcal + day.carbsKcal + day.fatKcal),
+    1
+  );
+  const hasData = macroKcals.some(
+    (day) => day.proteinKcal + day.carbsKcal + day.fatKcal > 0
+  );
+
+  if (!hasData) {
+    elements.historyMacroChart.innerHTML =
+      '<p class="hint">No data for this chart range.</p>';
+    return;
+  }
+
+  macroKcals.forEach((day) => {
+    const total = day.proteinKcal + day.carbsKcal + day.fatKcal;
+    const col = document.createElement("div");
+    col.className = "chart-col";
+
+    const value = document.createElement("div");
+    value.className = "chart-value";
+    value.textContent = `${total.toFixed(0)}`;
+
+    const track = document.createElement("div");
+    track.className = "chart-track stacked";
+    track.style.height = `${Math.max((total / maxTotal) * 100, 2)}%`;
+    const dayLabel = `${fmtChartDate(day.date)}: P ${day.protein.toFixed(
+      1
+    )}g (${goalDeltaLabel(day.protein, state.goals.protein, "g", "protein")}), C ${day.carbs.toFixed(
+      1
+    )}g (${goalDeltaLabel(day.carbs, state.goals.carbs, "g", "carbs")}), S ${day.sugar.toFixed(
+      1
+    )}g (${goalDeltaLabel(day.sugar, state.goals.sugar, "g", "sugar")}), F ${day.fat.toFixed(
+      1
+    )}g (${goalDeltaLabel(day.fat, state.goals.fat, "g", "fat")})`;
+    track.addEventListener("mouseenter", (event) =>
+      showChartTooltip(elements.macroChartCard, dayLabel, event)
+    );
+    track.addEventListener("mousemove", (event) =>
+      showChartTooltip(elements.macroChartCard, dayLabel, event)
+    );
+    track.addEventListener("mouseleave", () =>
+      hideChartTooltip(elements.macroChartCard)
+    );
+
+    const proteinSeg = document.createElement("div");
+    proteinSeg.className = "chart-seg protein";
+    proteinSeg.style.height = `${(day.proteinKcal / total) * 100 || 0}%`;
+
+    const carbsSeg = document.createElement("div");
+    carbsSeg.className = "chart-seg carbs";
+    carbsSeg.style.height = `${(day.carbsKcal / total) * 100 || 0}%`;
+
+    const fatSeg = document.createElement("div");
+    fatSeg.className = "chart-seg fat";
+    fatSeg.style.height = `${(day.fatKcal / total) * 100 || 0}%`;
+
+    const label = document.createElement("div");
+    label.className = "chart-label";
+    label.textContent = fmtChartDate(day.date);
+
+    track.appendChild(fatSeg);
+    track.appendChild(carbsSeg);
+    track.appendChild(proteinSeg);
+    col.appendChild(value);
+    col.appendChild(track);
+    col.appendChild(label);
+    elements.historyMacroChart.appendChild(col);
+  });
+};
+
+
+const renderTotals = (target, totals, goals = null) => {
+  target.innerHTML = "";
+  const valueWithGoal = (current, goal, digits = 0, unit = "") => {
+    if (!goals) {
+      return `${current.toFixed(
+        digits
+      )}<span class="total-unit">${unit}</span>`.trim();
+    }
+    return `${current.toFixed(digits)}<span class="goal-soft">/${goal.toFixed(
+      digits
+    )}</span><span class="total-unit">${unit}</span>`.trim();
+  };
+
+  const cards = [
+    {
+      label: "Calories",
+      value: valueWithGoal(totals.kcal, goals?.kcal ?? 0, 0, "kcal"),
+    },
+    {
+      label: "Protein",
+      value: valueWithGoal(totals.protein, goals?.protein ?? 0, 1, "g"),
+    },
+    { label: "Carbs", value: valueWithGoal(totals.carbs, goals?.carbs ?? 0, 1, "g") },
+    { label: "Sugar", value: valueWithGoal(totals.sugar, goals?.sugar ?? 0, 1, "g") },
+    { label: "Fat", value: valueWithGoal(totals.fat, goals?.fat ?? 0, 1, "g") },
+  ];
+  cards.forEach((card) => {
+    const div = document.createElement("div");
+    div.className = "total-card";
+    div.innerHTML = `<strong>${card.value}</strong><span>${card.label}</span>`;
+    target.appendChild(div);
+  });
+};
+
+const renderList = (target, items, titleFn, onDelete, onEdit) => {
+  target.innerHTML = "";
+  if (!items.length) {
+    target.innerHTML = `<p class="hint">No entries yet.</p>`;
+    return;
+  }
+
+  items.forEach((item) => {
+    const node = elements.rowTemplate.content.cloneNode(true);
+    node.querySelector(".row-title").textContent = titleFn(item);
+    node.querySelector(".row-sub").textContent = item.sub;
+    node.querySelector(".row-kcal").textContent = `${item.kcal.toFixed(0)} kcal`;
+    const editButton = node.querySelector(".row-edit");
+    if (typeof onEdit === "function") {
+      editButton.classList.remove("hidden");
+      editButton.addEventListener("click", () => onEdit(item));
+    }
+    const deleteButton = node.querySelector(".row-delete");
+    if (typeof onDelete === "function") {
+      deleteButton.classList.remove("hidden");
+      deleteButton.addEventListener("click", () => onDelete(item));
+    }
+    target.appendChild(node);
+  });
+};
+
+const renderHistoryListByDay = (target, entries) => {
+  target.innerHTML = "";
+  if (!entries.length) {
+    target.innerHTML = '<p class="hint">No entries for this range.</p>';
+    return;
+  }
+
+  const groups = entries.reduce((acc, entry) => {
+    if (!acc[entry.date]) acc[entry.date] = [];
+    acc[entry.date].push(entry);
+    return acc;
+  }, {});
+
+  const orderedDates = Object.keys(groups).sort((a, b) => b.localeCompare(a));
+
+  orderedDates.forEach((dateKey) => {
+    const daySection = document.createElement("section");
+    daySection.className = "history-day-group";
+
+    const dayTitle = document.createElement("h3");
+    dayTitle.className = "history-day-title";
+    dayTitle.textContent = fmtDate(fromISODate(dateKey));
+    daySection.appendChild(dayTitle);
+
+    groups[dateKey].forEach((entry) => {
+      const node = elements.rowTemplate.content.cloneNode(true);
+      node.querySelector(".row-title").textContent = entry.food;
+      node.querySelector(".row-sub").textContent = `${entry.grams} g · P ${entry.protein.toFixed(
+        1
+      )} / C ${entry.carbs.toFixed(1)} / S ${entry.sugar.toFixed(1)} / F ${entry.fat.toFixed(
+        1
+      )}`;
+      node.querySelector(".row-kcal").textContent = `${entry.kcal.toFixed(0)} kcal`;
+      daySection.appendChild(node);
+    });
+
+    target.appendChild(daySection);
+  });
+};
+
+const getWeekStart = (date) => {
+  const start = new Date(date);
+  const day = start.getDay() || 7;
+  start.setDate(start.getDate() - (day - 1));
+  return start;
+};
+
+const renderHistoryListByWeek = (target, entries) => {
+  target.innerHTML = "";
+  if (!entries.length) {
+    target.innerHTML = '<p class="hint">No entries for this range.</p>';
+    return;
+  }
+
+  const groups = entries.reduce((acc, entry) => {
+    const weekStartKey = toISODate(getWeekStart(fromISODate(entry.date)));
+    if (!acc[weekStartKey]) acc[weekStartKey] = [];
+    acc[weekStartKey].push(entry);
+    return acc;
+  }, {});
+
+  const orderedWeekKeys = Object.keys(groups).sort((a, b) => b.localeCompare(a));
+
+  orderedWeekKeys.forEach((weekStartKey) => {
+    const weekSection = document.createElement("section");
+    weekSection.className = "history-day-group";
+
+    const weekStart = fromISODate(weekStartKey);
+    const weekEnd = new Date(weekStart);
+    weekEnd.setDate(weekEnd.getDate() + 6);
+
+    const weekTitle = document.createElement("h3");
+    weekTitle.className = "history-day-title";
+    weekTitle.textContent = `Week of ${fmtRange(weekStart, weekEnd)}`;
+    weekSection.appendChild(weekTitle);
+
+    groups[weekStartKey].forEach((entry) => {
+      const entryDate = fromISODate(entry.date);
+      const node = elements.rowTemplate.content.cloneNode(true);
+      node.querySelector(".row-title").textContent = `${entry.food} · ${fmtDate(entryDate)}`;
+      node.querySelector(".row-sub").textContent = `${entry.grams} g · P ${entry.protein.toFixed(
+        1
+      )} / C ${entry.carbs.toFixed(1)} / S ${entry.sugar.toFixed(1)} / F ${entry.fat.toFixed(
+        1
+      )}`;
+      node.querySelector(".row-kcal").textContent = `${entry.kcal.toFixed(0)} kcal`;
+      weekSection.appendChild(node);
+    });
+
+    target.appendChild(weekSection);
+  });
+};
+
+const renderDay = () => {
+  const selected = new Date(state.selectedDate);
+  const selectedKey = state.selectedDate;
+  const todayKey = toISODate(new Date());
+  const label =
+    selectedKey === todayKey ? `${fmtDate(selected)} (Today)` : fmtDate(selected);
+  elements.todayDate.textContent = label;
+  elements.todaySelectDate.value = selectedKey;
+  elements.entryDate.value = selectedKey;
+
+  const dayEntries = state.intakes.filter((entry) => entry.date === selectedKey);
+  const totals = aggregateTotals(dayEntries);
+  renderTotals(elements.todayTotals, totals, state.goals);
+
+  const rows = dayEntries.map((entry) => ({
+    ...entry,
+    sub: `${entry.grams} g · P ${entry.protein.toFixed(1)} / C ${entry.carbs.toFixed(
+      1
+    )} / S ${entry.sugar.toFixed(1)} / F ${entry.fat.toFixed(1)}`,
+  }));
+
+  renderList(
+    elements.todayList,
+    rows,
+    (entry) => entry.food,
+    (entry) => deleteIntake(entry.id),
+    (entry) => editIntakeGrams(entry)
+  );
+};
+
+const getRange = (anchor, type) => {
+  const start = new Date(anchor);
+  const end = new Date(anchor);
+
+  if (type === "week") {
+    const day = start.getDay() || 7;
+    start.setDate(start.getDate() - (day - 1));
+    end.setDate(start.getDate() + 6);
+  }
+
+  if (type === "month") {
+    start.setDate(1);
+    end.setMonth(start.getMonth() + 1);
+    end.setDate(0);
+  }
+
+  if (type === "quarter") {
+    const quarter = Math.floor(start.getMonth() / 3);
+    start.setMonth(quarter * 3, 1);
+    end.setMonth(start.getMonth() + 3);
+    end.setDate(0);
+  }
+
+  return { start, end };
+};
+
+const renderHistory = () => {
+  const type = elements.rangeSelect.value;
+  const anchor = elements.anchorDate.value
+    ? new Date(elements.anchorDate.value)
+    : new Date();
+
+  const { start, end } = getRange(anchor, type);
+  const startKey = toISODate(start);
+  const endKey = toISODate(end);
+
+  const items = state.intakes.filter(
+    (entry) => entry.date >= startKey && entry.date <= endKey
+  );
+
+  const grouped = items.reduce((acc, entry) => {
+    if (!acc[entry.date]) acc[entry.date] = [];
+    acc[entry.date].push(entry);
+    return acc;
+  }, {});
+
+  const series = getDateKeysInRange(start, end).map((dateKey) => ({
+    date: dateKey,
+    ...aggregateTotals(grouped[dateKey] || []),
+  }));
+
+  const positiveValues = (key) =>
+    series.map((day) => day[key]).filter((value) => value > 0);
+
+  const medianTotals = {
+    kcal: median(positiveValues("kcal")),
+    protein: median(positiveValues("protein")),
+    carbs: median(positiveValues("carbs")),
+    fat: median(positiveValues("fat")),
+    sugar: median(positiveValues("sugar")),
+  };
+  renderTotals(elements.historyTotals, medianTotals, state.goals);
+
+  renderCaloriesChart(series);
+  renderMacroChart(series);
+
+  if (type === "quarter") {
+    elements.historyBreakdown.classList.add("hidden");
+    elements.historyBreakdown.innerHTML = "";
+    elements.historyView.querySelector(
+      ".card-header p"
+    ).textContent = `${type[0].toUpperCase() + type.slice(1)} view · ${fmtRange(
+      start,
+      end
+    )}`;
+    return;
+  }
+  elements.historyBreakdown.classList.remove("hidden");
+
+  const sortedItems = items
+    .slice()
+    .sort((a, b) => b.date.localeCompare(a.date));
+
+  if (!sortedItems.length) {
+    elements.historyBreakdown.innerHTML = '<p class="hint">No entries for this range.</p>';
+  } else if (type === "week") {
+    renderHistoryListByDay(elements.historyBreakdown, sortedItems);
+  } else if (type === "month") {
+    renderHistoryListByWeek(elements.historyBreakdown, sortedItems);
+  } else {
+    const rows = sortedItems.map((entry) => {
+      const entryDate = fromISODate(entry.date);
+      return {
+        food: `${entry.food} · ${fmtDate(entryDate)}`,
+        kcal: entry.kcal,
+        sub: `${entry.grams} g · P ${entry.protein.toFixed(
+          1
+        )} / C ${entry.carbs.toFixed(
+          1
+        )} / S ${entry.sugar.toFixed(1)} / F ${entry.fat.toFixed(1)}`,
+      };
+    });
+    renderList(elements.historyBreakdown, rows, (entry) => entry.food);
+  }
+
+  elements.historyView.querySelector(
+    ".card-header p"
+  ).textContent = `${type[0].toUpperCase() + type.slice(1)} view · ${fmtRange(
+    start,
+    end
+  )}`;
+};
+
+const addIntake = (event) => {
+  event.preventDefault();
+  const name = elements.foodInput.value.trim();
+  const grams = Number(elements.gramsInput.value);
+  const entryDate = elements.entryDate.value || state.selectedDate;
+
+  if (!name || !grams || !entryDate) return;
+
+  const food = findFood(name);
+  if (!food) {
+    elements.foodHint.textContent = "Food not found. Please pick from the list.";
+    return;
+  }
+
+  const macros = calcFromFood(food, grams);
+  const entry = {
+    id: createEntryId(),
+    food: food.name,
+    grams,
+    date: entryDate,
+    ...macros,
+  };
+
+  state.intakes.unshift(entry);
+  saveIntakes();
+  state.selectedDate = entryDate;
+  elements.addForm.reset();
+  elements.gramsInput.value = 100;
+  hideFoodSuggestions();
+  elements.entryDate.value = state.selectedDate;
+  elements.foodHint.textContent = "Logged!";
+  renderIntakePreview();
+  renderDay();
+  renderHistory();
+};
+
+const deleteIntake = (entryId) => {
+  const intake = state.intakes.find((entry) => entry.id === entryId);
+  const itemLabel = intake ? `${intake.food} (${intake.grams}g)` : "this intake";
+  const shouldDelete = confirm(`Delete ${itemLabel}?`);
+  if (!shouldDelete) return;
+
+  state.intakes = state.intakes.filter((entry) => entry.id !== entryId);
+  saveIntakes();
+  elements.foodHint.textContent = "Entry removed.";
+  renderDay();
+  renderHistory();
+};
+
+const editIntakeGrams = (entry) => {
+  const next = prompt(`Update grams for ${entry.food}:`, String(entry.grams));
+  if (next === null) return;
+
+  const grams = Number(next);
+  if (!Number.isFinite(grams) || grams <= 0) {
+    elements.foodHint.textContent = "Please enter a valid grams value.";
+    return;
+  }
+
+  const food = findFood(entry.food);
+  if (!food) {
+    elements.foodHint.textContent = "Food not found, cannot recalculate macros.";
+    return;
+  }
+
+  const updatedMacros = calcFromFood(food, grams);
+  const intake = state.intakes.find((item) => item.id === entry.id);
+  if (!intake) return;
+
+  intake.grams = grams;
+  intake.kcal = updatedMacros.kcal;
+  intake.protein = updatedMacros.protein;
+  intake.carbs = updatedMacros.carbs;
+  intake.fat = updatedMacros.fat;
+  intake.sugar = updatedMacros.sugar;
+
+  saveIntakes();
+  elements.foodHint.textContent = "Entry updated.";
+  renderDay();
+  renderHistory();
+};
+
+const applyTheme = () => {
+  document.documentElement.setAttribute("data-theme", state.theme);
+  const nextMode = state.theme === "dark" ? "light" : "dark";
+  const label = `Switch to ${nextMode} mode`;
+  elements.themeToggle.setAttribute("aria-label", label);
+  elements.themeToggle.setAttribute("title", label);
+};
+
+const toggleTheme = () => {
+  state.theme = state.theme === "dark" ? "light" : "dark";
+  applyTheme();
+  saveTheme();
+};
+
+const exportLocalData = () => {
+  const payload = createBackupPayload();
+  const blob = new Blob([JSON.stringify(payload, null, 2)], {
+    type: "application/json",
+  });
+  const url = URL.createObjectURL(blob);
+  const link = document.createElement("a");
+  const dateStamp = toISODate(new Date());
+  link.href = url;
+  link.download = `macros-backup-${dateStamp}.json`;
+  document.body.appendChild(link);
+  link.click();
+  link.remove();
+  URL.revokeObjectURL(url);
+  elements.goalsHint.textContent = "Backup exported.";
+};
+
+const importLocalData = async (event) => {
+  const file = event.target.files?.[0];
+  if (!file) return;
+
+  try {
+    const raw = await file.text();
+    const parsed = parseImportedPayload(JSON.parse(raw));
+    if (!parsed) throw new Error("Invalid backup format.");
+
+    state.intakes = parsed.intakes;
+    state.theme = parsed.theme;
+    state.goals = parsed.goals;
+    state.selectedDate = getLatestIntakeDate();
+
+    saveIntakes();
+    saveTheme();
+    saveGoals();
+    applyTheme();
+    renderGoalsForm();
+
+    elements.anchorDate.value = toISODate(new Date());
+    elements.todaySelectDate.value = state.selectedDate;
+    elements.entryDate.value = state.selectedDate;
+    elements.goalsHint.textContent = `Imported ${state.intakes.length} entries.`;
+
+    renderDay();
+    renderHistory();
+  } catch (_error) {
+    elements.goalsHint.textContent = "Import failed. Use a valid backup file.";
+  } finally {
+    event.target.value = "";
+  }
+};
+
+const saveGoalsFromSettings = (event) => {
+  event.preventDefault();
+  state.goals = normalizeGoals({
+    kcal: Number(elements.goalKcal.value),
+    protein: Number(elements.goalProtein.value),
+    carbs: Number(elements.goalCarbs.value),
+    fat: Number(elements.goalFat.value),
+    sugar: Number(elements.goalSugar.value),
+  });
+  saveGoals();
+  renderGoalsForm();
+  elements.goalsHint.textContent = "Goals saved.";
+  renderHistory();
+  renderDay();
+};
+
+const initTabs = () => {
+  elements.tabs.forEach((tab) => {
+    tab.addEventListener("click", () => {
+      elements.tabs.forEach((btn) => btn.classList.remove("active"));
+      tab.classList.add("active");
+
+      const view = tab.dataset.view;
+      if (view === "today") {
+        elements.intakeForm.classList.remove("hidden");
+        elements.todayView.classList.remove("hidden");
+        elements.historyView.classList.add("hidden");
+        elements.settingsView.classList.add("hidden");
+      } else if (view === "history") {
+        elements.intakeForm.classList.add("hidden");
+        elements.todayView.classList.add("hidden");
+        elements.historyView.classList.remove("hidden");
+        elements.settingsView.classList.add("hidden");
+      } else {
+        elements.intakeForm.classList.add("hidden");
+        elements.todayView.classList.add("hidden");
+        elements.historyView.classList.add("hidden");
+        elements.settingsView.classList.remove("hidden");
+      }
+    });
+  });
+};
+
+const loadFoods = async () => {
+  const response = await fetch(FOODS_URL);
+  const foods = await response.json();
+  state.foods = foods.map((food) => ({
+    ...food,
+    sugar: typeof food.sugar === "number" ? food.sugar : 0,
+  }));
+  elements.foodHint.textContent = `${state.foods.length} foods ready.`;
+  renderIntakePreview();
+};
+
+const init = async () => {
+  loadIntakes();
+  loadTheme();
+  loadGoals();
+  await loadFoods();
+  state.selectedDate = toISODate(new Date());
+  elements.anchorDate.value = toISODate(new Date());
+  elements.todaySelectDate.value = state.selectedDate;
+  elements.entryDate.value = state.selectedDate;
+  applyTheme();
+  renderGoalsForm();
+  elements.goalsHint.textContent = "";
+  renderDay();
+  renderHistory();
+};
+
+const registerServiceWorker = () => {
+  if ("serviceWorker" in navigator) {
+    window.addEventListener("load", () => {
+      navigator.serviceWorker.register("sw.js");
+    });
+  }
+};
+
+initTabs();
+loadIntakes();
+registerServiceWorker();
+
+window.addEventListener("DOMContentLoaded", () => {
+  initFoodAutocomplete();
+  elements.addForm.addEventListener("submit", addIntake);
+  elements.entryDate.addEventListener("change", (event) => {
+    state.selectedDate = event.target.value || state.selectedDate;
+    renderDay();
+  });
+  elements.todaySelectDate.addEventListener("change", (event) => {
+    state.selectedDate = event.target.value || state.selectedDate;
+    renderDay();
+  });
+  elements.rangeSelect.addEventListener("change", renderHistory);
+  elements.anchorDate.addEventListener("change", renderHistory);
+  elements.themeToggle.addEventListener("click", toggleTheme);
+  elements.exportDataButton.addEventListener("click", exportLocalData);
+  elements.importDataButton.addEventListener("click", () => {
+    elements.importFileInput.click();
+  });
+  elements.importFileInput.addEventListener("change", importLocalData);
+  elements.goalsForm.addEventListener("submit", saveGoalsFromSettings);
+  elements.foodInput.addEventListener("input", renderIntakePreview);
+  elements.gramsInput.addEventListener("input", renderIntakePreview);
+  document.addEventListener("click", (event) => {
+    if (
+      event.target !== elements.foodInput &&
+      !elements.foodSuggestions.contains(event.target)
+    ) {
+      hideFoodSuggestions();
+    }
+  });
+  init();
+});

@@ -0,0 +1,1050 @@
+[
+  {
+    "name": "Chicken breast",
+    "kcal": 165,
+    "protein": 31.0,
+    "carbs": 0.0,
+    "fat": 3.6,
+    "sugar": 0.0
+  },
+  {
+    "name": "Chicken thigh",
+    "kcal": 209,
+    "protein": 26.0,
+    "carbs": 0.0,
+    "fat": 10.9,
+    "sugar": 0.0
+  },
+  {
+    "name": "Turkey breast",
+    "kcal": 135,
+    "protein": 29.0,
+    "carbs": 0.0,
+    "fat": 1.0,
+    "sugar": 0.0
+  },
+  {
+    "name": "Lean beef",
+    "kcal": 217,
+    "protein": 26.1,
+    "carbs": 0.0,
+    "fat": 11.8,
+    "sugar": 0.0
+  },
+  {
+    "name": "Pork loin",
+    "kcal": 196,
+    "protein": 27.3,
+    "carbs": 0.0,
+    "fat": 8.3,
+    "sugar": 0.0
+  },
+  {
+    "name": "Salmon",
+    "kcal": 208,
+    "protein": 20.0,
+    "carbs": 0.0,
+    "fat": 13.0,
+    "sugar": 0.0
+  },
+  {
+    "name": "Tuna",
+    "kcal": 132,
+    "protein": 28.0,
+    "carbs": 0.0,
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+  {
+    "name": "Coconut milk",
+    "kcal": 230,
+    "protein": 2.3,
+    "carbs": 5.5,
+    "fat": 23.8,
+    "sugar": 3.3
+  },
+  {
+    "name": "Macadamia nuts",
+    "kcal": 718,
+    "protein": 7.9,
+    "carbs": 13.8,
+    "fat": 75.8,
+    "sugar": 4.6
+  },
+  {
+    "name": "Olives",
+    "kcal": 115,
+    "protein": 0.8,
+    "carbs": 6.3,
+    "fat": 10.7,
+    "sugar": 0.0
+  },
+  {
+    "name": "Mixed greens",
+    "kcal": 20,
+    "protein": 2.0,
+    "carbs": 3.3,
+    "fat": 0.2,
+    "sugar": 0.8
+  },
+  {
+    "name": "Cauliflower",
+    "kcal": 25,
+    "protein": 1.9,
+    "carbs": 5.0,
+    "fat": 0.3,
+    "sugar": 1.9
+  },
+  {
+    "name": "Celery",
+    "kcal": 16,
+    "protein": 0.7,
+    "carbs": 3.0,
+    "fat": 0.2,
+    "sugar": 1.3
+  },
+  {
+    "name": "Pickles",
+    "kcal": 12,
+    "protein": 0.5,
+    "carbs": 2.4,
+    "fat": 0.2,
+    "sugar": 1.1
+  },
+  {
+    "name": "Tomato sauce",
+    "kcal": 29,
+    "protein": 1.3,
+    "carbs": 6.6,
+    "fat": 0.2,
+    "sugar": 4.8
+  },
+  {
+    "name": "Low-sugar tomato sauce",
+    "kcal": 24,
+    "protein": 1.2,
+    "carbs": 4.3,
+    "fat": 0.2,
+    "sugar": 2.5
+  },
+  {
+    "name": "Pesto",
+    "kcal": 458,
+    "protein": 5.0,
+    "carbs": 6.0,
+    "fat": 46.0,
+    "sugar": 1.0
+  },
+  {
+    "name": "Guacamole",
+    "kcal": 150,
+    "protein": 2.0,
+    "carbs": 8.0,
+    "fat": 13.0,
+    "sugar": 1.0
+  },
+  {
+    "name": "Lemon",
+    "kcal": 29,
+    "protein": 1.1,
+    "carbs": 9.3,
+    "fat": 0.3,
+    "sugar": 2.5
+  },
+  {
+    "name": "Mustard",
+    "kcal": 66,
+    "protein": 4.4,
+    "carbs": 5.8,
+    "fat": 3.3,
+    "sugar": 1.2
+  },
+  {
+    "name": "Cinnamon",
+    "kcal": 247,
+    "protein": 4.0,
+    "carbs": 80.6,
+    "fat": 1.2,
+    "sugar": 2.2
+  },
+  {
+    "name": "Curry spices",
+    "kcal": 325,
+    "protein": 14.3,
+    "carbs": 55.8,
+    "fat": 14.0,
+    "sugar": 2.8
+  },
+  {
+    "name": "Salt",
+    "kcal": 0,
+    "protein": 0.0,
+    "carbs": 0.0,
+    "fat": 0.0,
+    "sugar": 0.0
+  },
+  {
+    "name": "Pepper",
+    "kcal": 251,
+    "protein": 10.4,
+    "carbs": 63.9,
+    "fat": 3.3,
+    "sugar": 0.6
+  },
+  {
+    "name": "Broth",
+    "kcal": 7,
+    "protein": 1.0,
+    "carbs": 0.4,
+    "fat": 0.2,
+    "sugar": 0.0
+  },
+  {
+    "name": "Bouillon",
+    "kcal": 267,
+    "protein": 17.4,
+    "carbs": 35.0,
+    "fat": 4.0,
+    "sugar": 16.0
+  }
+]

@@ -0,0 +1,19 @@
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+    </linearGradient>
+    <linearGradient id="bars" x1="0%" y1="0%" x2="0%" y2="100%">
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+      <stop offset="100%" stop-color="#dbeafe" />
+    </linearGradient>
+  </defs>
+  <rect width="256" height="256" rx="56" fill="url(#bg)" />
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+<svg xmlns="http://www.w3.org/2000/svg" width="512" height="512" viewBox="0 0 256 256">
+  <defs>
+    <linearGradient id="bg" x1="0%" y1="0%" x2="100%" y2="100%">
+      <stop offset="0%" stop-color="#0f766e" />
+      <stop offset="100%" stop-color="#14b8a6" />
+    </linearGradient>
+    <linearGradient id="bars" x1="0%" y1="0%" x2="0%" y2="100%">
+      <stop offset="0%" stop-color="#f8fafc" />
+      <stop offset="100%" stop-color="#dbeafe" />
+    </linearGradient>
+  </defs>
+  <rect width="256" height="256" rx="56" fill="url(#bg)" />
+  <circle cx="188" cy="68" r="24" fill="#ecfeff" opacity="0.95" />
+  <path d="M58 178V80c0-10 8-18 18-18h16c12 0 21 6 28 18l24 40 24-40c7-12 16-18 28-18h16c10 0 18 8 18 18v98c0 10-8 18-18 18h-16c-10 0-18-8-18-18v-40l-20 33c-5 8-11 12-18 12s-13-4-18-12l-20-33v40c0 10-8 18-18 18H76c-10 0-18-8-18-18z" fill="#083344" opacity="0.25" />
+  <path d="M54 174V76c0-10 8-18 18-18h16c12 0 21 6 28 18l24 40 24-40c7-12 16-18 28-18h16c10 0 18 8 18 18v98c0 10-8 18-18 18h-16c-10 0-18-8-18-18v-40l-20 33c-5 8-11 12-18 12s-13-4-18-12l-20-33v40c0 10-8 18-18 18H72c-10 0-18-8-18-18z" fill="url(#bars)" />
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+  <rect x="48" y="196" width="78" height="14" rx="7" fill="#22c55e" />
+</svg>

@@ -0,0 +1,19 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="256" height="256" viewBox="0 0 256 256" role="img" aria-label="macros logo">
+  <defs>
+    <linearGradient id="bg" x1="0%" y1="0%" x2="100%" y2="100%">
+      <stop offset="0%" stop-color="#0f766e" />
+      <stop offset="100%" stop-color="#14b8a6" />
+    </linearGradient>
+    <linearGradient id="bars" x1="0%" y1="0%" x2="0%" y2="100%">
+      <stop offset="0%" stop-color="#f8fafc" />
+      <stop offset="100%" stop-color="#dbeafe" />
+    </linearGradient>
+  </defs>
+  <rect width="256" height="256" rx="56" fill="url(#bg)" />
+  <circle cx="188" cy="68" r="24" fill="#ecfeff" opacity="0.95" />
+  <path d="M58 178V80c0-10 8-18 18-18h16c12 0 21 6 28 18l24 40 24-40c7-12 16-18 28-18h16c10 0 18 8 18 18v98c0 10-8 18-18 18h-16c-10 0-18-8-18-18v-40l-20 33c-5 8-11 12-18 12s-13-4-18-12l-20-33v40c0 10-8 18-18 18H76c-10 0-18-8-18-18z" fill="#083344" opacity="0.25" />
+  <path d="M54 174V76c0-10 8-18 18-18h16c12 0 21 6 28 18l24 40 24-40c7-12 16-18 28-18h16c10 0 18 8 18 18v98c0 10-8 18-18 18h-16c-10 0-18-8-18-18v-40l-20 33c-5 8-11 12-18 12s-13-4-18-12l-20-33v40c0 10-8 18-18 18H72c-10 0-18-8-18-18z" fill="url(#bars)" />
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+  <rect x="48" y="196" width="78" height="14" rx="7" fill="#22c55e" />
+</svg>

@@ -0,0 +1,215 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <meta name="theme-color" content="#0f766e" />
+    <meta name="apple-mobile-web-app-capable" content="yes" />
+    <meta name="apple-mobile-web-app-status-bar-style" content="default" />
+    <meta name="apple-mobile-web-app-title" content="macros" />
+    <title>macros</title>
+    <link rel="manifest" href="manifest.json" />
+    <link rel="icon" href="icons/logo.svg" type="image/svg+xml" />
+    <link rel="apple-touch-icon" href="icons/logo.svg" />
+    <link rel="stylesheet" href="styles.css" />
+  </head>
+  <body>
+    <div class="app">
+      <header class="topbar">
+        <div class="brand">
+          <img class="brand-logo" src="icons/logo.svg" alt="macros logo" />
+          <div>
+            <h1>macros</h1>
+            <p>Lightweight food intake tracker</p>
+          </div>
+        </div>
+        <div class="topbar-actions">
+          <button id="theme-toggle" class="ghost icon-button" type="button" aria-label="Switch to dark mode" title="Switch to dark mode">
+            <span class="theme-icon icon-moon" aria-hidden="true">
+              <svg viewBox="0 0 24 24" focusable="false">
+                <path d="M15 2.8c-2.2.8-3.8 2.9-3.8 5.5 0 3.3 2.7 6 6 6 1.4 0 2.6-.4 3.7-1.2-1 4.7-5.1 8.2-10.1 8.2-5.7 0-10.3-4.6-10.3-10.3 0-5.3 4-9.7 9.2-10.3.2 0 .4 0 .5-.1H15z"></path>
+              </svg>
+            </span>
+            <span class="theme-icon icon-sun" aria-hidden="true">
+              <svg viewBox="0 0 24 24" focusable="false">
+                <path d="M12 7a5 5 0 100 10 5 5 0 000-10zm0-5a1 1 0 011 1v2a1 1 0 11-2 0V3a1 1 0 011-1zm0 17a1 1 0 011 1v2a1 1 0 11-2 0v-2a1 1 0 011-1zm9-8a1 1 0 110 2h-2a1 1 0 110-2h2zM5 12a1 1 0 110 2H3a1 1 0 110-2h2zm12.4-6.4a1 1 0 011.4 1.4l-1.4 1.4A1 1 0 0116 7.6l1.4-1.4zM8 16a1 1 0 011.4 1.4L8 18.8a1 1 0 01-1.4-1.4L8 16zm10.8 1.4a1 1 0 01-1.4 1.4L16 17.4a1 1 0 011.4-1.4l1.4 1.4zM9.4 8a1 1 0 01-1.4 1.4L6.6 8A1 1 0 018 6.6L9.4 8z"></path>
+              </svg>
+            </span>
+          </button>
+          <nav class="nav">
+            <button class="tab active" data-view="today">Today</button>
+            <button class="tab" data-view="history">History</button>
+            <button class="tab" data-view="settings">Settings</button>
+          </nav>
+        </div>
+      </header>
+
+      <main>
+        <section class="card" id="intake-form">
+          <div class="card-header">
+            <h2>Add Intake</h2>
+            <p>Pick a food and log the grams you ate.</p>
+          </div>
+          <form id="add-intake">
+            <label>
+              Food
+              <div class="food-combobox">
+                <input name="food" id="food-input" placeholder="Start typing..." autocomplete="off" required />
+                <div id="food-suggestions" class="food-suggestions hidden"></div>
+              </div>
+            </label>
+            <label>
+              Amount (grams)
+              <input type="number" min="1" step="1" name="grams" id="grams-input" value="100" required />
+            </label>
+            <label>
+              Log date
+              <input type="date" name="entry-date" id="entry-date" />
+            </label>
+            <button type="submit" class="primary">Add</button>
+          </form>
+          <div id="intake-preview" class="intake-preview">
+            <p class="preview-title">Nutrition preview</p>
+            <div class="preview-grid">
+              <div class="preview-block">
+                <p class="preview-block-title">Per 100g</p>
+                <p id="preview-base" class="preview-values">Select a food to preview macros.</p>
+              </div>
+              <div class="preview-block">
+                <p class="preview-block-title">For selected amount</p>
+                <p id="preview-scaled" class="preview-values">Enter grams to see calculated macros.</p>
+              </div>
+            </div>
+          </div>
+          <div class="hint" id="food-hint">Loading foods...</div>
+        </section>
+
+        <section class="card" id="today-view">
+          <div class="card-header">
+            <h2>Day</h2>
+            <p id="today-date"></p>
+          </div>
+          <div class="history-controls">
+            <label>
+              Select day
+              <input type="date" id="today-select-date" />
+            </label>
+          </div>
+          <div class="totals" id="today-totals"></div>
+          <div class="list" id="today-list"></div>
+        </section>
+
+        <section class="card hidden" id="history-view">
+          <div class="card-header">
+            <h2>History</h2>
+            <p>Zoom by day, week, month, or quarter.</p>
+          </div>
+          <div class="history-controls">
+            <label>
+              Range
+              <select id="range-select">
+                <option value="day">Day</option>
+                <option value="week" selected>Week</option>
+                <option value="month">Month</option>
+                <option value="quarter">Quarter</option>
+              </select>
+            </label>
+            <label>
+              Anchor date
+              <input type="date" id="anchor-date" />
+            </label>
+          </div>
+          <div class="history-charts">
+            <div class="chart-card" id="kcal-chart-card">
+              <h3>Calories by day</h3>
+              <div id="history-kcal-chart" class="chart-grid"></div>
+            </div>
+            <div class="chart-card" id="macro-chart-card">
+              <h3>Macro split by day</h3>
+              <div id="history-macro-chart" class="chart-grid"></div>
+              <div class="chart-legend">
+                <span><i class="legend-dot protein"></i>Protein</span>
+                <span><i class="legend-dot carbs"></i>Carbs</span>
+                <span><i class="legend-dot fat"></i>Fat</span>
+              </div>
+            </div>
+          </div>
+          <div class="totals" id="history-totals"></div>
+          <div class="list" id="history-breakdown"></div>
+        </section>
+
+        <section class="card hidden" id="settings-view">
+          <div class="card-header">
+            <h2>Settings</h2>
+            <p>Data migration and daily goals.</p>
+          </div>
+          <p class="hint">
+            This app is a PWA, so you can install it on your phone from the browser menu (Add to Home Screen / Install app). All your data stays locally on your device only and is never sent to any server.
+          </p>
+	  <br>
+          <div class="settings-panels">
+            <div class="settings-panel">
+              <h3>Data migration</h3>
+              <div class="settings-actions">
+                <button id="export-data" class="ghost" type="button">Export local data</button>
+                <button id="import-data" class="ghost" type="button">Import local data</button>
+                <input id="import-file" type="file" accept="application/json" class="file-input-hidden" />
+              </div>
+            </div>
+            <div class="settings-panel">
+              <h3>Daily goals</h3>
+              <form id="goals-form" class="goals-form">
+                <label>
+                  Calories (kcal)
+                  <input type="number" min="0" step="1" id="goal-kcal" required />
+                </label>
+                <label>
+                  Protein (g)
+                  <input type="number" min="0" step="1" id="goal-protein" required />
+                </label>
+                <label>
+                  Carbs (g)
+                  <input type="number" min="0" step="1" id="goal-carbs" required />
+                </label>
+                <label>
+                  Fat (g)
+                  <input type="number" min="0" step="1" id="goal-fat" required />
+                </label>
+                <label>
+                  Sugar (g)
+                  <input type="number" min="0" step="1" id="goal-sugar" required />
+                </label>
+                <button type="submit" class="primary">Save goals</button>
+              </form>
+              <p class="hint" id="goals-hint"></p>
+            </div>
+          </div>
+        </section>
+      </main>
+    </div>
+
+    <template id="intake-row">
+      <div class="row">
+        <div>
+          <div class="row-title"></div>
+          <div class="row-sub"></div>
+        </div>
+        <div class="row-actions">
+          <div class="row-kcal"></div>
+          <button type="button" class="row-edit hidden icon-action" aria-label="Edit entry" title="Edit entry">
+            <svg viewBox="0 0 24 24" focusable="false" aria-hidden="true">
+              <path d="M3 17.25V21h3.75L17.8 9.94l-3.75-3.75L3 17.25zm2.92 2.33H5v-.92l9.06-9.06.92.92L5.92 19.58zM20.71 7.04a1 1 0 000-1.41l-2.34-2.34a1 1 0 00-1.41 0l-1.13 1.13 3.75 3.75 1.13-1.13z"></path>
+            </svg>
+          </button>
+          <button type="button" class="row-delete hidden icon-action" aria-label="Delete entry" title="Delete entry">
+            <svg viewBox="0 0 24 24" focusable="false" aria-hidden="true">
+              <path d="M6 7h12l-1 13a2 2 0 01-2 2H9a2 2 0 01-2-2L6 7zm3-4h6l1 2h4v2H4V5h4l1-2zm1 6h2v9h-2V9zm4 0h2v9h-2V9z"></path>
+            </svg>
+          </button>
+        </div>
+      </div>
+    </template>
+
+    <script src="app.js"></script>
+  </body>
+</html>

@@ -0,0 +1,24 @@
+{
+  "name": "macros",
+  "short_name": "macros",
+  "id": "/",
+  "start_url": "/",
+  "scope": "/",
+  "display": "standalone",
+  "background_color": "#f6f7f5",
+  "theme_color": "#0f766e",
+  "icons": [
+    {
+      "src": "icons/icon-192.svg",
+      "sizes": "192x192",
+      "type": "image/svg+xml",
+      "purpose": "any maskable"
+    },
+    {
+      "src": "icons/icon-512.svg",
+      "sizes": "512x512",
+      "type": "image/svg+xml",
+      "purpose": "any maskable"
+    }
+  ]
+}

@@ -0,0 +1,761 @@
+:root {
+  color-scheme: light;
+  --bg: #f6f7f5;
+  --panel: #ffffff;
+  --ink: #0f172a;
+  --muted: #64748b;
+  --accent: #0f766e;
+  --accent-soft: #e6f5f1;
+  --border: #e2e8f0;
+  --shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
+  --field-bg: #f8fafc;
+  --radius: 18px;
+  --font: "Space Grotesk", "Montserrat", "Poppins", system-ui, sans-serif;
+}
+
+:root[data-theme="dark"] {
+  color-scheme: dark;
+  --bg: #09111a;
+  --panel: #121b27;
+  --ink: #e6edf5;
+  --muted: #9dafc5;
+  --accent: #14b8a6;
+  --accent-soft: #16303a;
+  --border: #263546;
+  --shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
+  --field-bg: #1a2736;
+}
+
+* {
+  box-sizing: border-box;
+  margin: 0;
+  padding: 0;
+}
+
+body {
+  font-family: var(--font);
+  background: radial-gradient(circle at top, #ffffff 0%, #f3f4f2 45%, #eef2f1 100%);
+  color: var(--ink);
+  min-height: 100vh;
+}
+
+:root[data-theme="dark"] body {
+  background: radial-gradient(circle at top, #122131 0%, #0b141d 45%, #09111a 100%);
+}
+
+.app {
+  max-width: 960px;
+  margin: 32px auto 48px;
+  padding: 0 20px;
+}
+
+.topbar {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  gap: 24px;
+  margin-bottom: 24px;
+}
+
+.topbar-actions {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+}
+
+.brand {
+  display: flex;
+  align-items: center;
+  gap: 16px;
+}
+
+.brand-logo {
+  width: 44px;
+  height: 44px;
+  border-radius: 14px;
+  box-shadow: var(--shadow);
+  display: block;
+}
+
+.brand h1 {
+  font-size: 1.6rem;
+  letter-spacing: -0.02em;
+}
+
+.brand p {
+  color: var(--muted);
+  font-size: 0.9rem;
+}
+
+.nav {
+  display: flex;
+  gap: 8px;
+  background: var(--panel);
+  padding: 6px;
+  border-radius: 999px;
+  border: 1px solid var(--border);
+}
+
+.ghost {
+  background: var(--panel);
+  color: var(--ink);
+  border: 1px solid var(--border);
+  border-radius: 999px;
+  padding: 8px 14px;
+  font-weight: 600;
+  cursor: pointer;
+}
+
+.icon-button {
+  width: 40px;
+  height: 40px;
+  padding: 0;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.theme-icon {
+  width: 18px;
+  height: 18px;
+  display: inline-flex;
+}
+
+.theme-icon svg {
+  width: 100%;
+  height: 100%;
+  fill: currentColor;
+}
+
+.icon-sun {
+  display: none;
+}
+
+:root[data-theme="dark"] .icon-sun {
+  display: inline-flex;
+}
+
+:root[data-theme="dark"] .icon-moon {
+  display: none;
+}
+
+.file-input-hidden {
+  display: none;
+}
+
+.tab {
+  border: none;
+  background: transparent;
+  padding: 8px 18px;
+  border-radius: 999px;
+  font-weight: 600;
+  color: var(--muted);
+  cursor: pointer;
+  transition: all 160ms ease;
+}
+
+.tab.active {
+  color: var(--ink);
+  background: var(--accent-soft);
+}
+
+main {
+  display: grid;
+  gap: 20px;
+}
+
+.card {
+  background: var(--panel);
+  border-radius: var(--radius);
+  padding: 20px;
+  border: 1px solid var(--border);
+  box-shadow: var(--shadow);
+}
+
+.card-header {
+  display: flex;
+  justify-content: space-between;
+  align-items: baseline;
+  margin-bottom: 16px;
+  gap: 12px;
+}
+
+.card-header p {
+  color: var(--muted);
+  font-size: 0.9rem;
+}
+
+form {
+  display: grid;
+  gap: 14px;
+  grid-template-columns: 1.4fr 1fr 1fr auto;
+  align-items: end;
+}
+
+label {
+  display: grid;
+  gap: 6px;
+  font-size: 0.85rem;
+  color: var(--muted);
+}
+
+input,
+select {
+  padding: 10px 12px;
+  border-radius: 12px;
+  border: 1px solid var(--border);
+  font-size: 0.95rem;
+  background: var(--field-bg);
+  color: var(--ink);
+}
+
+.food-combobox {
+  position: relative;
+}
+
+.food-suggestions {
+  position: absolute;
+  top: calc(100% + 6px);
+  left: 0;
+  right: 0;
+  max-height: 220px;
+  overflow-y: auto;
+  border: 1px solid var(--border);
+  background: var(--panel);
+  border-radius: 12px;
+  box-shadow: var(--shadow);
+  z-index: 5;
+  padding: 4px;
+}
+
+.food-suggestion {
+  width: 100%;
+  text-align: left;
+  border: none;
+  background: transparent;
+  color: var(--ink);
+  padding: 10px 11px;
+  border-radius: 9px;
+  cursor: pointer;
+}
+
+.food-suggestion:hover,
+.food-suggestion.active {
+  background: var(--accent-soft);
+}
+
+button.primary {
+  background: var(--accent);
+  color: white;
+  border: none;
+  border-radius: 12px;
+  padding: 10px 18px;
+  font-weight: 600;
+  cursor: pointer;
+  transition: transform 140ms ease, box-shadow 140ms ease;
+}
+
+button.primary:hover {
+  transform: translateY(-1px);
+  box-shadow: 0 10px 20px rgba(15, 118, 110, 0.25);
+}
+
+.hint {
+  margin-top: 10px;
+  color: var(--muted);
+  font-size: 0.85rem;
+}
+
+.intake-preview {
+  margin-top: 12px;
+  border: 1px solid var(--border);
+  background: var(--field-bg);
+  border-radius: 14px;
+  padding: 12px;
+}
+
+.preview-title {
+  font-size: 0.8rem;
+  color: var(--muted);
+  margin-bottom: 8px;
+}
+
+.preview-grid {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 10px;
+}
+
+.preview-block {
+  background: var(--panel);
+  border: 1px solid var(--border);
+  border-radius: 10px;
+  padding: 10px;
+}
+
+.preview-block-title {
+  font-size: 0.75rem;
+  color: var(--muted);
+  margin-bottom: 6px;
+}
+
+.preview-values {
+  font-size: 0.86rem;
+  line-height: 1.35;
+}
+
+.totals {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
+  gap: 12px;
+  margin-bottom: 16px;
+}
+
+.total-card {
+  padding: 12px 14px;
+  border-radius: 14px;
+  background: var(--field-bg);
+  border: 1px solid var(--border);
+}
+
+.total-card strong {
+  display: inline-flex;
+  align-items: baseline;
+  flex-wrap: nowrap;
+  font-size: 1.2rem;
+  line-height: 1.1;
+  white-space: nowrap;
+}
+
+.goal-soft {
+  display: inline-block;
+  color: var(--muted);
+  font-weight: inherit;
+  opacity: 0.85;
+}
+
+.total-unit {
+  display: inline-block;
+  margin-left: 4px;
+  font-size: 0.7em;
+  font-weight: 600;
+  color: var(--muted);
+}
+
+.total-card span {
+  display: block;
+  color: var(--muted);
+  font-size: 0.8rem;
+}
+
+.list {
+  display: grid;
+  gap: 10px;
+}
+
+.history-day-group {
+  display: grid;
+  gap: 8px;
+}
+
+.history-day-group + .history-day-group {
+  margin-top: 10px;
+}
+
+.history-day-title {
+  font-size: 0.82rem;
+  color: var(--muted);
+  font-weight: 700;
+  letter-spacing: 0.02em;
+  text-transform: uppercase;
+  margin: 2px 2px 0;
+}
+
+.row {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  padding: 12px 14px;
+  border-radius: 12px;
+  background: var(--field-bg);
+  border: 1px solid var(--border);
+}
+
+.row-actions {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+}
+
+.row-title {
+  font-weight: 600;
+}
+
+.row-sub {
+  color: var(--muted);
+  font-size: 0.8rem;
+  margin-top: 2px;
+}
+
+.row-kcal {
+  font-weight: 700;
+}
+
+.row-delete {
+  border: 1px solid var(--border);
+  background: transparent;
+  color: var(--ink);
+  border-radius: 999px;
+  width: 34px;
+  height: 34px;
+  padding: 0;
+  cursor: pointer;
+}
+
+.row-edit {
+  border: 1px solid var(--border);
+  background: transparent;
+  color: var(--ink);
+  border-radius: 999px;
+  width: 34px;
+  height: 34px;
+  padding: 0;
+  cursor: pointer;
+}
+
+.icon-action {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.icon-action svg {
+  width: 16px;
+  height: 16px;
+  fill: currentColor;
+  display: block;
+}
+
+.row-edit:hover {
+  color: var(--accent);
+  border-color: var(--accent);
+}
+
+.row-delete:hover {
+  color: #ef4444;
+  border-color: #ef4444;
+}
+
+.history-controls {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
+  gap: 12px;
+  margin-bottom: 16px;
+}
+
+.history-charts {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
+  gap: 12px;
+  margin-bottom: 16px;
+}
+
+.chart-card {
+  background: var(--field-bg);
+  border: 1px solid var(--border);
+  border-radius: 14px;
+  padding: 12px;
+  position: relative;
+}
+
+.chart-card h3 {
+  font-size: 0.9rem;
+  margin-bottom: 10px;
+}
+
+.chart-grid {
+  min-height: 170px;
+}
+
+#history-kcal-chart {
+  display: block;
+}
+
+#history-macro-chart {
+  display: grid;
+  grid-auto-flow: column;
+  grid-auto-columns: minmax(26px, 1fr);
+  gap: 8px;
+  overflow-x: auto;
+  padding-bottom: 4px;
+}
+
+.chart-col {
+  display: grid;
+  grid-template-rows: auto 1fr auto;
+  align-items: end;
+  min-width: 26px;
+}
+
+.chart-value {
+  font-size: 0.7rem;
+  color: var(--muted);
+  text-align: center;
+  margin-bottom: 4px;
+}
+
+.chart-track {
+  height: 110px;
+  border-radius: 10px;
+  border: 1px solid var(--border);
+  background: var(--panel);
+  position: relative;
+  overflow: hidden;
+}
+
+.chart-fill {
+  position: absolute;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  border-radius: 8px;
+}
+
+.chart-fill.kcal {
+  background: linear-gradient(180deg, #14b8a6, #0f766e);
+}
+
+.chart-track.stacked {
+  display: flex;
+  flex-direction: column-reverse;
+  justify-content: flex-start;
+  align-self: end;
+  height: 110px;
+}
+
+.chart-seg {
+  width: 100%;
+}
+
+.chart-seg.protein,
+.legend-dot.protein {
+  background: #22c55e;
+}
+
+.chart-seg.carbs,
+.legend-dot.carbs {
+  background: #f59e0b;
+}
+
+.chart-seg.fat,
+.legend-dot.fat {
+  background: #ef4444;
+}
+
+.chart-label {
+  font-size: 0.68rem;
+  color: var(--muted);
+  text-align: center;
+  margin-top: 5px;
+  white-space: nowrap;
+}
+
+.chart-legend {
+  display: flex;
+  gap: 10px;
+  flex-wrap: wrap;
+  margin-top: 10px;
+  font-size: 0.75rem;
+  color: var(--muted);
+}
+
+.chart-legend span {
+  display: flex;
+  align-items: center;
+  gap: 5px;
+}
+
+.line-chart-scroll {
+  overflow-x: auto;
+  padding-bottom: 2px;
+}
+
+.line-chart-svg {
+  display: block;
+  width: 100%;
+  min-width: 320px;
+  height: 180px;
+}
+
+.line-axis {
+  stroke: var(--border);
+  stroke-width: 1;
+}
+
+.line-path {
+  fill: none;
+  stroke: var(--accent);
+  stroke-width: 3;
+  stroke-linecap: round;
+  stroke-linejoin: round;
+}
+
+.goal-line {
+  stroke: #f59e0b;
+  stroke-width: 1.5;
+  stroke-dasharray: 6 4;
+}
+
+.line-point {
+  fill: var(--accent);
+  stroke: var(--panel);
+  stroke-width: 2;
+}
+
+.line-point.goal-under {
+  fill: #ef4444;
+}
+
+.line-point.goal-over {
+  fill: #22c55e;
+}
+
+.line-chart-labels {
+  display: flex;
+  justify-content: space-between;
+  margin-top: 4px;
+  color: var(--muted);
+  font-size: 0.72rem;
+}
+
+.chart-tooltip {
+  position: absolute;
+  z-index: 3;
+  max-width: 180px;
+  padding: 6px 8px;
+  border-radius: 8px;
+  border: 1px solid var(--border);
+  background: var(--panel);
+  color: var(--ink);
+  font-size: 0.72rem;
+  pointer-events: none;
+  box-shadow: var(--shadow);
+}
+
+.goal-indicators {
+  display: grid;
+  gap: 8px;
+}
+
+.goal-row {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px;
+  align-items: center;
+  padding: 10px;
+  border: 1px solid var(--border);
+  border-radius: 10px;
+  background: var(--panel);
+}
+
+.goal-row strong {
+  font-size: 0.86rem;
+}
+
+.goal-row > span {
+  font-size: 0.75rem;
+  color: var(--muted);
+}
+
+.goal-chip {
+  padding: 3px 8px;
+  border-radius: 999px;
+  border: 1px solid var(--border);
+  font-size: 0.72rem;
+}
+
+.goal-chip.under {
+  color: #dc2626;
+}
+
+.goal-chip.on {
+  color: #16a34a;
+}
+
+.goal-chip.over {
+  color: #0369a1;
+}
+
+.settings-panels {
+  display: grid;
+  gap: 14px;
+}
+
+.settings-panel {
+  background: var(--field-bg);
+  border: 1px solid var(--border);
+  border-radius: 14px;
+  padding: 14px;
+}
+
+.settings-panel h3 {
+  font-size: 0.95rem;
+  margin-bottom: 10px;
+}
+
+.settings-actions {
+  display: flex;
+  gap: 10px;
+  flex-wrap: wrap;
+}
+
+.goals-form {
+  display: grid;
+  gap: 12px;
+  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
+}
+
+.legend-dot {
+  display: inline-block;
+  width: 10px;
+  height: 10px;
+  border-radius: 50%;
+}
+
+.hidden {
+  display: none;
+}
+
+@media (max-width: 720px) {
+  .topbar {
+    flex-direction: column;
+    align-items: flex-start;
+  }
+
+  .topbar-actions {
+    width: 100%;
+    justify-content: space-between;
+    gap: 10px;
+  }
+
+  .nav {
+    flex: 1;
+    justify-content: center;
+  }
+
+  form {
+    grid-template-columns: 1fr;
+  }
+
+  .goals-form {
+    grid-template-columns: 1fr;
+  }
+
+  .settings-actions .ghost {
+    width: 100%;
+  }
+
+  .preview-grid {
+    grid-template-columns: 1fr;
+  }
+}

@@ -0,0 +1,50 @@
+const CACHE_NAME = "macros-v12";
+const ASSETS = [
+  "/",
+  "/index.html",
+  "/styles.css",
+  "/app.js",
+  "/foods.json",
+  "/manifest.json",
+  "/icons/logo.svg",
+  "/icons/icon-192.svg",
+  "/icons/icon-512.svg"
+];
+
+self.addEventListener("install", (event) => {
+  event.waitUntil(
+    caches.open(CACHE_NAME).then((cache) => cache.addAll(ASSETS))
+  );
+  self.skipWaiting();
+});
+
+self.addEventListener("activate", (event) => {
+  event.waitUntil(
+    caches.keys().then((keys) =>
+      Promise.all(
+        keys.map((key) => {
+          if (key !== CACHE_NAME) return caches.delete(key);
+          return null;
+        })
+      )
+    )
+  );
+  self.clients.claim();
+});
+
+self.addEventListener("fetch", (event) => {
+  if (event.request.method !== "GET") return;
+
+  event.respondWith(
+    caches.match(event.request).then((cached) => {
+      if (cached) return cached;
+      return fetch(event.request).then((response) => {
+        const copy = response.clone();
+        caches.open(CACHE_NAME).then((cache) => {
+          cache.put(event.request, copy);
+        });
+        return response;
+      });
+    })
+  );
+});