/* ✨ Lettres Magiques — jeu web pour enfants
   - Catégories / imagier (famille, animaux, fruits, couleurs…)
   - Espace parent (édite les mots + prénom de l'enfant, protégé par un calcul)
   - Personnalisation au prénom de l'enfant
   - Mode guidé (surligne la prochaine lettre + lit chaque lettre)
   Fonctionne au clavier (ordi) et au toucher (téléphone/tablette). */

"use strict";

/* ================================================================== */
/* Données par défaut (catégories + mots)                              */
/* Pour un mot "names" : clue = phrase magique. Pour "imagier" : emoji. */
/* ================================================================== */
const DEFAULTS = {
  childName: "",
  guided: true,
  categories: [
    {
      id: "famille", label: "La famille", emoji: "👨‍👩‍👧‍👦", kind: "names", show: true,
      words: [
        { w: "PEPE", clue: "Pépé, la reine des bisous magiques !" },
        { w: "GEGE", clue: "Gégé, le champion des chatouilles !" },
        { w: "NICO", clue: "Nico, le super héros rigolo !" },
        { w: "JULIE", clue: "Julie, la fée des câlins tout doux !" },
        { w: "LILWENN", clue: "Lilwenn, la princesse des étoiles filantes !" },
        { w: "COME", clue: "Côme, le pirate des doudous perdus !" },
        { w: "GWEN", clue: "Gwen, la magicienne des sourires !" },
        { w: "ISABELLE", clue: "Isabelle, la reine des gâteaux rigolos !" },
        { w: "BAPTISTE", clue: "Baptiste, le roi des voitures qui font vroum !" },
        { w: "TRUFFE", clue: "Truffe, le chien qui fait des bisous baveux !" },
      ],
    },
    {
      id: "animaux", label: "Les animaux", emoji: "🐾", kind: "imagier", show: true,
      words: [
        { w: "CHAT", clue: "🐱" }, { w: "CHIEN", clue: "🐶" }, { w: "VACHE", clue: "🐮" },
        { w: "LION", clue: "🦁" }, { w: "LAPIN", clue: "🐰" }, { w: "POULE", clue: "🐔" },
        { w: "OURS", clue: "🐻" }, { w: "SINGE", clue: "🐵" }, { w: "CANARD", clue: "🦆" },
        { w: "POISSON", clue: "🐟" },
      ],
    },
    {
      id: "fruits", label: "Fruits & légumes", emoji: "🍎", kind: "imagier", show: true,
      words: [
        { w: "POMME", clue: "🍎" }, { w: "BANANE", clue: "🍌" }, { w: "FRAISE", clue: "🍓" },
        { w: "CERISE", clue: "🍒" }, { w: "RAISIN", clue: "🍇" }, { w: "CITRON", clue: "🍋" },
        { w: "CAROTTE", clue: "🥕" }, { w: "TOMATE", clue: "🍅" }, { w: "POIRE", clue: "🍐" },
        { w: "ORANGE", clue: "🍊" },
      ],
    },
    {
      id: "couleurs", label: "Les couleurs", emoji: "🌈", kind: "imagier", show: true,
      words: [
        { w: "ROUGE", clue: "🟥" }, { w: "BLEU", clue: "🟦" }, { w: "VERT", clue: "🟩" },
        { w: "JAUNE", clue: "🟨" }, { w: "ORANGE", clue: "🟧" }, { w: "VIOLET", clue: "🟪" },
        { w: "ROSE", clue: "🌸" }, { w: "NOIR", clue: "⬛" }, { w: "BLANC", clue: "⬜" },
        { w: "MARRON", clue: "🟫" },
      ],
    },
  ],
};

const STORE_KEY = "lm_data_v1";
const BATCH_SIZE = 6;
const STICKERS = ["🦄","⭐","🌈","🐱","🚀","🍭","🎈","🐠","🦋","🌸","🐢","🍩","🎸","🐧","🌟"];
const ENCOURAGEMENTS = ["Super ! 🌟","Génial ! 🎉","Bravo ! 👏","Magnifique ! ✨","Tu es fort ! 💪","Youpi ! 🎈","Fantastique ! 🌈","Trop bien ! 🚀"];
const ERREURS = ["Oups ! Essaie encore ! 🤗","Pas grave ! Recommence ! 😊","Presque ! Tu vas y arriver ! 💪","C'est pas facile ! Essaie ! 🌟"];

/* ================================================================== */
/* Persistance (localStorage)                                          */
/* ================================================================== */
function clone(o) { return JSON.parse(JSON.stringify(o)); }
let data = loadData();
function loadData() {
  try {
    const raw = localStorage.getItem(STORE_KEY);
    if (raw) {
      const d = JSON.parse(raw);
      if (d && Array.isArray(d.categories) && d.categories.length) return d;
    }
  } catch (e) {}
  return clone(DEFAULTS);
}
function saveData() { try { localStorage.setItem(STORE_KEY, JSON.stringify(data)); } catch (e) {} }

/* ================================================================== */
/* État de jeu                                                         */
/* ================================================================== */
const state = {
  running: false,
  cat: null,            // catégorie en cours
  score: 0,
  current: "",          // lettres tapées
  targets: [],          // mots du lot courant (chaînes)
  found: new Set(),
  totalFound: 0,
  stickers: 0,
  focus: null,          // mot visé (pour guide + imagier)
  soundOn: true,
  lastAction: 0,
  hintShown: false,
  miniGame: null,
};

/* ================================================================== */
/* Raccourcis DOM                                                      */
/* ================================================================== */
const $ = (id) => document.getElementById(id);
const elScore = $("score"), elStickersCount = $("stickers-count");
const elClue = $("clue"), elWordZone = $("word-zone"), elWordList = $("word-list");
const elKeyboard = $("keyboard"), elBlob = $("blob"), elSpeech = $("speech");
const elMini = $("minigame"), elMgTitle = $("mg-title"), elMgTime = $("mg-time");

/* ================================================================== */
/* Son (WebAudio) + voix (Web Speech)                                  */
/* ================================================================== */
let audioCtx = null;
function ac() { if (!audioCtx) audioCtx = new (window.AudioContext || window.webkitAudioContext)(); return audioCtx; }
function beep(freq, dur = 0.12, type = "sine", vol = 0.18, delay = 0) {
  if (!state.soundOn) return;
  try {
    const ctx = ac(), o = ctx.createOscillator(), g = ctx.createGain();
    o.type = type; o.frequency.value = freq;
    const t0 = ctx.currentTime + delay;
    g.gain.setValueAtTime(0, t0);
    g.gain.linearRampToValueAtTime(vol, t0 + 0.02);
    g.gain.exponentialRampToValueAtTime(0.001, t0 + dur);
    o.connect(g).connect(ctx.destination);
    o.start(t0); o.stop(t0 + dur + 0.02);
  } catch (e) {}
}
const sndType = () => beep(420 + Math.random() * 120, 0.08, "triangle", 0.12);
const sndPop = () => beep(700, 0.10, "square", 0.14);
const sndError = () => { beep(300, 0.14, "sawtooth", 0.10); beep(220, 0.18, "sawtooth", 0.10, 0.08); };
const sndSuccess = () => { [523, 659, 784, 1047].forEach((f, i) => beep(f, 0.22, "triangle", 0.16, i * 0.09)); };
const sndSticker = () => { [784, 988, 1175].forEach((f, i) => beep(f, 0.25, "sine", 0.16, i * 0.10)); };

let frVoice = null;
function pickVoice() {
  const voices = (window.speechSynthesis && speechSynthesis.getVoices()) || [];
  frVoice = voices.find(v => /fr(-|_)?/i.test(v.lang)) || voices[0] || null;
}
if ("speechSynthesis" in window) { pickVoice(); speechSynthesis.onvoiceschanged = pickVoice; }
function say(text, { interrupt = true } = {}) {
  if (!state.soundOn || !("speechSynthesis" in window)) return;
  const clean = String(text)
    .replace(/[^\p{L}\p{N} !?.,']/gu, "")
    .replace(/[A-Z]{2,}/g, (m) => m.toLowerCase())   // évite que la voix annonce « majuscule »
    .trim();
  if (!clean) return;
  try {
    if (interrupt) speechSynthesis.cancel();
    const u = new SpeechSynthesisUtterance(clean);
    if (frVoice) u.voice = frVoice;
    u.lang = "fr-FR"; u.rate = 0.92; u.pitch = 1.15;
    speechSynthesis.speak(u);
  } catch (e) {}
}

/* ================================================================== */
/* Helpers                                                             */
/* ================================================================== */
const rand = (a) => a[Math.floor(Math.random() * a.length)];
function shuffle(a) { a = a.slice(); for (let i = a.length - 1; i > 0; i--) { const j = Math.floor(Math.random() * (i + 1)); [a[i], a[j]] = [a[j], a[i]]; } return a; }
function now() { return performance.now(); }
const nom = () => (data.childName || "").trim();
function clueOf(w) { const it = state.cat && state.cat.words.find(x => x.w === w); return it ? it.clue : ""; }

/* ================================================================== */
/* Mascotte                                                            */
/* ================================================================== */
let speechTimer = null, blinkTimer = null;
function mascotSet(s) { elBlob.classList.remove("happy","sad","sleep","dance"); if (s) elBlob.classList.add(s); }
function mascotSay(text, mood = "happy") {
  mascotSet(mood);
  elSpeech.textContent = text;
  elSpeech.classList.add("show");
  clearTimeout(speechTimer);
  speechTimer = setTimeout(() => elSpeech.classList.remove("show"), 3400);
  say(text);
  if (mood === "dance") setTimeout(() => mascotSet("happy"), 2500);
}
function mascotError() { mascotSay(rand(ERREURS), "sad"); }
function blinkLoop() {
  clearTimeout(blinkTimer);
  blinkTimer = setTimeout(() => {
    elBlob.classList.add("blink");
    setTimeout(() => elBlob.classList.remove("blink"), 150);
    blinkLoop();
  }, 1500 + Math.random() * 3000);
}

/* Phrases personnalisées ----------------------------------------- */
function greeting() {
  const n = nom();
  const h = new Date().getHours();
  if (n) {
    if (h >= 6 && h < 12) return `Bonjour ${n} ! Bien dormi ? On joue ? 🌞`;
    if (h >= 17 && h < 21) return `Bonsoir ${n} ! Une petite partie avant dodo ? 🌙`;
    return rand([`Coucou ${n} ! On s'amuse ? 🎮`, `${n} est là ! Youpi ! 🎉`, `Salut ${n} ! Prêt ? 🌟`]);
  }
  return "Coucou ! On apprend les lettres en s'amusant ? 😊";
}
function successPhrase(word) {
  const n = nom();
  // Catégorie famille : on garde la phrase magique du prénom
  if (state.cat.kind === "names") {
    const c = clueOf(word);
    return "Bravo ! " + (c || (word + " !")) + " 🎉";
  }
  // Paliers
  if (state.totalFound === 1) return n ? `Ton 1er mot ${n} ! ${word} ! Génial ! 🎊` : `Ton 1er mot ! ${word} ! 🎊`;
  if (state.totalFound === 5) return n ? `Déjà 5 mots ${n} ! Tu es super fort ! 🚀` : `Déjà 5 mots ! Bravo ! 🚀`;
  if (state.totalFound === 10) return n ? `10 MOTS ! ${n} est un GÉNIE ! 🧠✨` : `10 MOTS ! Un génie ! 🧠✨`;
  const base = rand([`Bravo ! ${word} ! 🏆`, `Oui ! C'est ${word} ! ⭐`, `Super ! ${word} ! 🌈`]);
  return n && Math.random() < 0.4 ? base.replace("!", `${n} !`) : base;
}
function encourage() {
  let e = rand(ENCOURAGEMENTS);
  const n = nom();
  if (n && Math.random() < 0.35) e = e.replace("Tu", `${n}, tu`).replace("Bravo", `Bravo ${n}`);
  return e;
}

/* ================================================================== */
/* Menu de catégories                                                  */
/* ================================================================== */
function buildMenu() {
  const grid = $("cat-grid");
  grid.innerHTML = "";
  data.categories.filter(c => c.show && c.words.length).forEach(cat => {
    const b = document.createElement("button");
    b.className = "cat-card";
    b.innerHTML = `<span class="cat-emoji">${cat.emoji}</span><span class="cat-label">${cat.label}</span>`;
    b.addEventListener("click", () => startCategory(cat));
    grid.appendChild(b);
  });
}

/* ================================================================== */
/* Lot de mots, affichage                                              */
/* ================================================================== */
function newBatch() {
  const words = state.cat.words.map(x => x.w);
  state.targets = shuffle(words).slice(0, Math.min(BATCH_SIZE, words.length));
  state.found.clear();
  state.current = "";
  renderList();
  renderWord();
  recomputeFocus(true);
}
const LETTER_COLORS = ["#ff6bcb","#6a5cff","#2ee6e6","#ffd23f","#3ddc84","#ff8c42"];
function renderWord(popLast = false) {
  elWordZone.innerHTML = "";
  [...state.current].forEach((ch, i) => {
    const t = document.createElement("span");
    t.className = "tile" + (popLast && i === state.current.length - 1 ? " pop" : "");
    t.textContent = ch;
    t.style.color = LETTER_COLORS[i % LETTER_COLORS.length];
    elWordZone.appendChild(t);
  });
}
function renderList() {
  elWordList.innerHTML = "";
  const imagier = state.cat.kind === "imagier";
  state.targets.forEach((w) => {
    const c = document.createElement("span");
    c.className = "chip" + (state.found.has(w) ? " found" : "");
    c.dataset.word = w;
    c.textContent = imagier ? (clueOf(w) + " " + w) : w;
    elWordList.appendChild(c);
  });
}
function renderClue() {
  if (state.cat.kind === "imagier" && state.focus) {
    elClue.textContent = clueOf(state.focus);
    elClue.classList.remove("hidden");
  } else {
    elClue.classList.add("hidden");
  }
}

/* Mot visé (guide + imagier) -------------------------------------- */
function recomputeFocus(announce = false) {
  const left = state.targets.filter(w => !state.found.has(w));
  let f = null;
  if (state.current) f = left.find(w => w.startsWith(state.current));
  if (!f) f = left.find(w => w.startsWith(state.current)) || left[0] || null;
  const changed = f !== state.focus;
  state.focus = f;
  renderClue();
  applyGuide();
  if (announce && changed && f) setTimeout(announceWord, 300);
}
// Énonce et affiche le mot à écrire (toutes catégories) + surligne sa pastille
function announceWord() {
  if (!state.focus) return;
  state.lastPrompt = now();
  clearHint();
  const chip = elWordList.querySelector(`.chip[data-word="${state.focus}"]`);
  if (chip) chip.classList.add("hint");
  mascotSay("Écris : " + state.focus + " ✏️", "happy");
}
function applyGuide() {
  elKeyboard.querySelectorAll(".key.guide").forEach(k => k.classList.remove("guide"));
  if (!data.guided || !state.focus) return;
  const next = state.focus[state.current.length];
  if (!next) return;
  const key = elKeyboard.querySelector(`.key[data-ch="${next}"]`);
  if (key) key.classList.add("guide");
}

/* ================================================================== */
/* Saisie                                                              */
/* ================================================================== */
function eraseLetter() { state.current = ""; renderWord(); bump(); recomputeFocus(); }
function bump() { state.lastAction = now(); state.lastPrompt = now(); state.hintShown = false; clearHint(); }
function inputLetter(ch) {
  ch = ch.toUpperCase();
  if (!/^[A-Z]$/.test(ch)) return;
  bump();
  mascotSet("happy");
  state.current += ch;
  renderWord(true);
  sndType();
  if (data.guided) say(ch.toLowerCase(), { interrupt: true });   // lit la lettre (minuscule)
  spawnBubbles(window.innerWidth / 2, window.innerHeight * 0.32, 6);
  checkWord();
  recomputeFocus();
}
function checkWord() {
  const w = state.current;
  if (state.targets.includes(w) && !state.found.has(w)) { wordFound(w); return; }
  const possible = state.targets.some(t => !state.found.has(t) && t.startsWith(w));
  if (!possible) {
    mascotError(); sndError();
    setTimeout(() => { state.current = ""; renderWord(); recomputeFocus(); }, 380);
  }
}
function wordFound(w) {
  state.found.add(w);
  state.totalFound++;
  state.score += 100 * w.length;
  elScore.textContent = state.score;
  renderList();
  celebrate(); sndSuccess();
  mascotSay(successPhrase(w), "dance");
  if (state.totalFound % 3 === 0) { earnSticker(); confettiBurst(120); }
  setTimeout(() => { state.current = ""; renderWord(); recomputeFocus(true); }, 750);
  if (state.found.size >= state.targets.length) {
    confettiBurst(200);
    const n = nom();
    setTimeout(() => mascotSay(n ? `Tu as tout trouvé ${n} ! 🥳` : "Tu as tout trouvé ! 🥳", "dance"), 800);
    setTimeout(newBatch, 1700);
  }
}

/* ================================================================== */
/* Autocollants                                                        */
/* ================================================================== */
function earnSticker() {
  if (state.stickers >= STICKERS.length) return;
  state.stickers++;
  elStickersCount.textContent = state.stickers;
  sndSticker();
  const emoji = STICKERS[state.stickers - 1];
  setTimeout(() => mascotSay("Nouvel autocollant ! " + emoji, "dance"), 900);
}
function renderStickerGrid() {
  const grid = $("sticker-grid");
  grid.innerHTML = "";
  STICKERS.forEach((emoji, i) => {
    const d = document.createElement("div");
    const ok = i < state.stickers;
    d.className = "sticker " + (ok ? "unlocked" : "locked");
    d.textContent = ok ? emoji : "❔";
    grid.appendChild(d);
  });
}

/* ================================================================== */
/* Inactivité : indice puis dodo                                       */
/* ================================================================== */
function clearHint() { document.querySelectorAll(".chip.hint").forEach(c => c.classList.remove("hint")); }
function checkIdle() {
  if (!state.running || state.miniGame) return;
  const idle = (now() - state.lastAction) / 1000;
  // Si rien n'est tapé, on rappelle (et on redit) le mot à écrire, régulièrement
  if (idle > 4 && now() - (state.lastPrompt || 0) > 6000) announceWord();
}

/* ================================================================== */
/* Mini-jeux (ballons / étoiles)                                       */
/* ================================================================== */
let nextMiniGame = 0;
function maybeStartMiniGame() { if (!state.miniGame && state.running && now() >= nextMiniGame) startMiniGame(); }
function startMiniGame(kind) {
  kind = kind || (Math.random() < 0.5 ? "ballons" : "etoiles");
  state.miniGame = { kind, items: [], end: now() + 10000, spawn: 0, earned: 0 };
  elMgTitle.textContent = kind === "ballons" ? "🎈 Éclate les ballons !" : "⭐ Attrape les étoiles !";
  elMini.classList.remove("hidden");
  mascotSay("Mini-jeu bonus ! 🎮", "dance");
}
function endMiniGame() {
  if (!state.miniGame) return;
  const earned = state.miniGame.earned;
  state.miniGame = null;
  elMini.classList.add("hidden");
  nextMiniGame = now() + 35000;
  if (earned > 0) { state.score += earned; elScore.textContent = state.score; mascotSay(encourage(), "dance"); }
}
function updateMiniGame(dt) {
  const mg = state.miniGame; if (!mg) return;
  if (now() > mg.end) { endMiniGame(); return; }
  elMgTime.textContent = Math.ceil((mg.end - now()) / 1000);
  mg.spawn -= dt;
  if (mg.spawn <= 0) {
    mg.spawn = 0.55;
    mg.items.push({ x: 40 + Math.random() * (window.innerWidth - 80), y: window.innerHeight + 30, r: 26 + Math.random() * 14, vy: 90 + Math.random() * 70, hue: Math.floor(Math.random() * 360), kind: mg.kind });
  }
  for (const it of mg.items) it.y -= it.vy * dt;
  mg.items = mg.items.filter(it => it.y > -60);
}
function hitMiniGame(x, y) {
  const mg = state.miniGame; if (!mg) return;
  for (let i = mg.items.length - 1; i >= 0; i--) {
    const it = mg.items[i];
    if (Math.hypot(it.x - x, it.y - y) < it.r + 16) {
      mg.items.splice(i, 1); mg.earned += 20; sndPop(); spawnBubbles(x, y, 10); confettiAt(x, y, 8); return;
    }
  }
}

/* ================================================================== */
/* Canvas FX                                                           */
/* ================================================================== */
const cv = $("fx"), ctx2d = cv.getContext("2d");
let W = 0, H = 0, DPR = 1, stars = [], bubbles = [], confetti = [], rainbow = 0, ambient = [];
function resize() {
  DPR = Math.min(window.devicePixelRatio || 1, 2);
  W = window.innerWidth; H = window.innerHeight;
  cv.width = W * DPR; cv.height = H * DPR; cv.style.width = W + "px"; cv.style.height = H + "px";
  ctx2d.setTransform(DPR, 0, 0, DPR, 0, 0);
  layoutSafeAreas();
}
function initStars() {
  stars = [];
  const n = Math.min(160, Math.floor((W * H) / 9000));
  for (let i = 0; i < n; i++) stars.push({ x: Math.random()*W, y: Math.random()*H, r: 0.6+Math.random()*2.2, phase: Math.random()*Math.PI*2, sp: 0.01+Math.random()*0.04, col: rand(["#ffffff","#ffd23f","#2ee6e6","#ff6bcb"]) });
}
function spawnBubbles(x, y, n) { for (let i=0;i<n;i++) bubbles.push({ x: x+(Math.random()-0.5)*80, y, r: 6+Math.random()*16, vy: 0.6+Math.random()*1.8, life: 1, drift: (Math.random()-0.5)*1.5, col: rand(["#2ee6e6","#6a5cff","#7af5f5"]) }); }
function confettiBurst(n) { for (let i=0;i<n;i++) confetti.push(mkConfetti(Math.random()*W, -20)); rainbow = 1; }
function confettiAt(x, y, n) { for (let i=0;i<n;i++) confetti.push(mkConfetti(x, y)); }
function mkConfetti(x, y) { return { x, y, vx: (Math.random()-0.5)*6, vy: 2+Math.random()*4, rot: Math.random()*360, vr: (Math.random()-0.5)*20, size: 8+Math.random()*10, col: rand(["#ff6bcb","#6a5cff","#2ee6e6","#ffd23f","#3ddc84","#ff8c42"]) }; }
function celebrate() { confettiBurst(90); spawnBubbles(W/2, H/2, 24); }
function drawBackground() {
  const g = ctx2d.createLinearGradient(0, 0, 0, H);
  g.addColorStop(0, "#5b6cff"); g.addColorStop(0.5, "#8a63ff"); g.addColorStop(1, "#ff8fd0");
  ctx2d.fillStyle = g; ctx2d.fillRect(0, 0, W, H);
}
function loop(ts) {
  if (!loop.last) loop.last = ts;
  const dt = Math.min(0.05, (ts - loop.last) / 1000); loop.last = ts;
  drawBackground();
  for (const s of stars) { s.phase += s.sp; const lum = (Math.sin(s.phase)+1)/2; ctx2d.globalAlpha = 0.2+lum*0.8; ctx2d.fillStyle = s.col; ctx2d.beginPath(); ctx2d.arc(s.x, s.y, s.r, 0, Math.PI*2); ctx2d.fill(); }
  ctx2d.globalAlpha = 1;
  if (rainbow > 0) {
    rainbow -= dt * 0.5;
    const cols = ["#ff5c5c","#ff8c42","#ffd23f","#3ddc84","#2ee6e6","#6a5cff","#ff6bcb"];
    ctx2d.globalAlpha = Math.max(0, rainbow) * 0.5; ctx2d.lineWidth = 16;
    cols.forEach((c, i) => { ctx2d.strokeStyle = c; ctx2d.beginPath(); ctx2d.arc(W/2, H*1.1, W*0.5 - i*18, Math.PI, Math.PI*2); ctx2d.stroke(); });
    ctx2d.globalAlpha = 1;
  }
  for (const b of bubbles) { b.y -= b.vy; b.x += Math.sin(b.y*0.02)*b.drift; b.life -= 0.01; ctx2d.globalAlpha = Math.max(0,b.life)*0.6; ctx2d.strokeStyle = b.col; ctx2d.lineWidth = 2; ctx2d.beginPath(); ctx2d.arc(b.x, b.y, b.r, 0, Math.PI*2); ctx2d.stroke(); }
  ctx2d.globalAlpha = 1; bubbles = bubbles.filter(b => b.life > 0 && b.y > -60);
  for (const c of confetti) { c.x += c.vx; c.y += c.vy; c.vy += 0.12; c.rot += c.vr; ctx2d.save(); ctx2d.translate(c.x, c.y); ctx2d.rotate(c.rot*Math.PI/180); ctx2d.fillStyle = c.col; ctx2d.fillRect(-c.size/2, -c.size/2, c.size, c.size*0.6); ctx2d.restore(); }
  confetti = confetti.filter(c => c.y < H + 40);
  // Ballons volants d'ambiance (décoratifs)
  loop.amb = (loop.amb || 0) + dt;
  if (loop.amb > 2.4 && ambient.length < 6) {
    loop.amb = 0;
    ambient.push({ x: 40 + Math.random() * (W - 80), y: H + 50, vy: 16 + Math.random() * 16, hue: Math.floor(Math.random() * 360), sway: Math.random() * Math.PI * 2 });
  }
  for (const b of ambient) {
    b.y -= b.vy * dt; b.sway += dt;
    const x = b.x + Math.sin(b.sway) * 14;
    ctx2d.globalAlpha = 0.85;
    ctx2d.fillStyle = `hsl(${b.hue} 80% 62%)`;
    ctx2d.beginPath(); ctx2d.ellipse(x, b.y, 16, 20, 0, 0, Math.PI * 2); ctx2d.fill();
    ctx2d.strokeStyle = "rgba(255,255,255,0.45)"; ctx2d.lineWidth = 1;
    ctx2d.beginPath(); ctx2d.moveTo(x, b.y + 20); ctx2d.lineTo(x, b.y + 40); ctx2d.stroke();
    ctx2d.globalAlpha = 1;
  }
  ambient = ambient.filter(b => b.y > -70);
  updateMiniGame(dt);
  if (state.miniGame) {
    for (const it of state.miniGame.items) {
      if (it.kind === "ballons") {
        ctx2d.fillStyle = `hsl(${it.hue} 85% 60%)`; ctx2d.beginPath(); ctx2d.ellipse(it.x, it.y, it.r*0.85, it.r, 0, 0, Math.PI*2); ctx2d.fill();
        ctx2d.strokeStyle = "rgba(255,255,255,0.5)"; ctx2d.lineWidth = 1; ctx2d.beginPath(); ctx2d.moveTo(it.x, it.y+it.r); ctx2d.lineTo(it.x, it.y+it.r+22); ctx2d.stroke();
      } else { drawStar(it.x, it.y, it.r, `hsl(${it.hue} 90% 60%)`); }
    }
  }
  requestAnimationFrame(loop);
}
function drawStar(cx, cy, r, color) {
  ctx2d.fillStyle = color; ctx2d.beginPath();
  for (let i = 0; i < 10; i++) { const ang = (Math.PI/5)*i - Math.PI/2; const rad = i%2===0?r:r*0.45; const x = cx+Math.cos(ang)*rad, y = cy+Math.sin(ang)*rad; i===0?ctx2d.moveTo(x,y):ctx2d.lineTo(x,y); }
  ctx2d.closePath(); ctx2d.fill();
}

/* ================================================================== */
/* Clavier tactile                                                     */
/* ================================================================== */
const KB_ROWS = ["ABCDEFG", "HIJKLMN", "OPQRSTU", "VWXYZ"];
function buildKeyboard() {
  elKeyboard.innerHTML = "";
  KB_ROWS.forEach((row, ri) => {
    const r = document.createElement("div"); r.className = "kb-row";
    [...row].forEach((ch, i) => {
      const b = document.createElement("button");
      b.className = "key"; b.textContent = ch; b.dataset.ch = ch;
      b.style.background = `linear-gradient(135deg, hsl(${(ri*40+i*22)%360} 80% 62%), hsl(${(ri*40+i*22+30)%360} 80% 52%))`;
      b.addEventListener("pointerdown", (e) => { e.preventDefault(); inputLetter(ch); }, { passive: false });
      r.appendChild(b);
    });
    if (ri === KB_ROWS.length - 1) {
      const e = document.createElement("button"); e.className = "key wide erase"; e.textContent = "⌫ Effacer";
      e.addEventListener("pointerdown", (ev) => { ev.preventDefault(); eraseLetter(); }, { passive: false });
      r.appendChild(e);
    }
    elKeyboard.appendChild(r);
  });
  layoutSafeAreas();
}
function layoutSafeAreas() {
  const h = elKeyboard.classList.contains("hidden") ? 0 : elKeyboard.offsetHeight;
  document.documentElement.style.setProperty("--kb-h", h + "px");
}

/* ================================================================== */
/* Entrées globales                                                    */
/* ================================================================== */
window.addEventListener("keydown", (e) => {
  if (!state.running) return;
  if (e.key === "Backspace" || e.key === " ") { e.preventDefault(); eraseLetter(); return; }
  if (/^[a-zA-Z]$/.test(e.key)) inputLetter(e.key);
});
window.addEventListener("pointerdown", (e) => { if (state.miniGame) hitMiniGame(e.clientX, e.clientY); });

/* ================================================================== */
/* Navigation : démarrage catégorie / retour menu                      */
/* ================================================================== */
const GAME_UI = ["hud","word-zone","word-list","keyboard","mascot"];
function showMenu() {
  state.running = false;
  $("start").classList.add("hidden");
  GAME_UI.forEach(id => $(id).classList.add("hidden"));
  elClue.classList.add("hidden");
  buildMenu();
  $("menu").classList.remove("hidden");
}
function startCategory(cat) {
  state.cat = cat;
  state.running = true;
  state.score = 0; state.totalFound = 0; state.stickers = 0;
  state.current = ""; state.found.clear(); state.focus = null;
  state.lastAction = now(); nextMiniGame = now() + 30000;
  elScore.textContent = "0"; elStickersCount.textContent = "0";
  $("menu").classList.add("hidden"); $("start").classList.add("hidden");
  GAME_UI.forEach(id => $(id).classList.remove("hidden"));
  buildKeyboard();
  newBatch();
  blinkLoop();
  try { ac().resume(); } catch (e) {}
  mascotSay(greeting(), "happy");
  if (cat.kind === "imagier") recomputeFocus(true);
}

/* ================================================================== */
/* Espace parents (protégé par un calcul)                              */
/* ================================================================== */
function openParents() {
  const a = 2 + Math.floor(Math.random() * 7), b = 2 + Math.floor(Math.random() * 7);
  const body = $("parent-body");
  body.innerHTML = `
    <h2>⚙️ Espace parents</h2>
    <p class="gate-q">Pour entrer, combien font <b>${a} + ${b}</b> ?</p>
    <input id="gate-input" class="field" inputmode="numeric" type="number" placeholder="?" />
    <div class="row-btns">
      <button class="big-btn small" id="gate-ok">Valider</button>
      <button class="big-btn small ghost" data-close-parent>Annuler</button>
    </div>`;
  $("parent").classList.remove("hidden");
  const input = $("gate-input"); input.focus();
  const check = () => { if (parseInt(input.value, 10) === a + b) renderParentEditor(); else { input.value = ""; input.placeholder = "Réessaie"; } };
  $("gate-ok").addEventListener("click", check);
  input.addEventListener("keydown", e => { if (e.key === "Enter") check(); });
}
function renderParentEditor() {
  const body = $("parent-body");
  body.innerHTML = `
    <h2>⚙️ Espace parents</h2>
    <label class="field-label">Prénom de l'enfant</label>
    <input id="child-name" class="field" type="text" maxlength="14" placeholder="ex : Léa" value="${escapeHtml(data.childName || "")}" />
    <label class="check"><input type="checkbox" id="guided-toggle" ${data.guided ? "checked" : ""} /> Mode guidé (surligne la lettre + lit à voix haute)</label>
    <div id="cats-editor"></div>
    <div class="row-btns sticky-save">
      <button class="big-btn small" id="parent-save">💾 Enregistrer</button>
      <button class="big-btn small ghost" id="parent-reset">Réinitialiser</button>
      <button class="big-btn small ghost" data-close-parent>Fermer</button>
    </div>`;
  renderCatsEditor();
  $("parent-save").addEventListener("click", saveParents);
  $("parent-reset").addEventListener("click", () => {
    if (confirm("Remettre toutes les listes par défaut ? (le prénom de l'enfant est conservé)")) {
      const keepName = $("child-name").value;
      data = clone(DEFAULTS); data.childName = keepName; saveData(); renderParentEditor();
    }
  });
}
function renderCatsEditor() {
  const wrap = $("cats-editor");
  wrap.innerHTML = "";
  data.categories.forEach((cat, ci) => {
    const sec = document.createElement("div");
    sec.className = "cat-edit";
    const isNames = cat.kind === "names";
    sec.innerHTML = `
      <div class="cat-edit-head">
        <label class="check"><input type="checkbox" data-show="${ci}" ${cat.show ? "checked" : ""} /> <b>${cat.emoji} ${escapeHtml(cat.label)}</b></label>
      </div>
      <div class="words" data-words="${ci}"></div>
      <button class="add-word" data-add="${ci}">+ Ajouter un mot</button>`;
    wrap.appendChild(sec);
    const wbox = sec.querySelector(`[data-words="${ci}"]`);
    cat.words.forEach((it, wi) => wbox.appendChild(wordRow(ci, wi, it, isNames)));
    sec.querySelector(`[data-add="${ci}"]`).addEventListener("click", () => {
      cat.words.push({ w: "", clue: "" });
      wbox.appendChild(wordRow(ci, cat.words.length - 1, cat.words[cat.words.length - 1], isNames));
    });
    sec.querySelector(`[data-show="${ci}"]`).addEventListener("change", e => { cat.show = e.target.checked; });
  });
}
function wordRow(ci, wi, it, isNames) {
  const row = document.createElement("div");
  row.className = "word-row";
  const ph = isNames ? "Phrase magique (ex : Pépé, le roi des câlins !)" : "Emoji (ex : 🐱)";
  row.innerHTML = `
    <input class="field w-name" type="text" value="${escapeHtml(it.w)}" placeholder="MOT" />
    <input class="field w-clue" type="text" value="${escapeHtml(it.clue)}" placeholder="${ph}" />
    <button class="del" title="Supprimer">🗑️</button>`;
  row.querySelector(".w-name").addEventListener("input", e => { it.w = e.target.value.toUpperCase().replace(/[^A-Z]/g, ""); e.target.value = it.w; });
  row.querySelector(".w-clue").addEventListener("input", e => { it.clue = e.target.value; });
  row.querySelector(".del").addEventListener("click", () => { data.categories[ci].words.splice(wi, 1); renderCatsEditor(); });
  return row;
}
function saveParents() {
  data.childName = $("child-name").value.trim();
  data.guided = $("guided-toggle").checked;
  // nettoyer les mots vides
  data.categories.forEach(c => { c.words = c.words.filter(x => x.w && x.w.length >= 2); });
  saveData();
  $("parent").classList.add("hidden");
  buildMenu();
}
function escapeHtml(s) { return String(s).replace(/[&<>"']/g, m => ({ "&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#39;" }[m])); }

/* ================================================================== */
/* Boutons globaux                                                     */
/* ================================================================== */
$("btn-play").addEventListener("click", showMenu);
$("btn-parents").addEventListener("click", openParents);
$("btn-parents-menu").addEventListener("click", openParents);
$("btn-home").addEventListener("click", showMenu);
$("btn-sound").addEventListener("click", () => {
  state.soundOn = !state.soundOn;
  $("btn-sound").textContent = state.soundOn ? "🔊" : "🔇";
  if (!state.soundOn && "speechSynthesis" in window) speechSynthesis.cancel();
});
$("btn-stickers").addEventListener("click", () => { renderStickerGrid(); $("sticker-drawer").classList.remove("hidden"); });
$("btn-mini").addEventListener("click", () => { if (state.running && !state.miniGame) startMiniGame("ballons"); });
document.addEventListener("click", (e) => {
  if (e.target.closest("[data-close-drawer]")) $("sticker-drawer").classList.add("hidden");
  if (e.target.closest("[data-close-parent]")) $("parent").classList.add("hidden");
});

/* ================================================================== */
/* Init                                                                */
/* ================================================================== */
window.addEventListener("resize", () => { resize(); initStars(); });
resize(); initStars(); requestAnimationFrame(loop);
if ("serviceWorker" in navigator) window.addEventListener("load", () => navigator.serviceWorker.register("sw.js").catch(() => {}));