// boot, fixed-timestep loop, phase machine, interactions (ARCHITECTURE.md D5)
import * as api from "./api.js";
import { G, cacheEls, setState } from "./state.js";
import { keys, on, bindStageClick, typingMode } from "./input.js";
import { drawFloor, SPOTS, NPC_SPOTS } from "./map.js";
import { createPlayer } from "./player.js";
import { createNpcs } from "./npcs.js";
import { updateHud, banner, clearBanner, revenueFloat } from "./hud.js";
import { renderTrail, resetTrail, escapeHtml } from "./papertrail.js";
import * as dlg from "./dialogue.js";
import * as comic from "./comic.js";
import * as fx from "./effects.js";
import { enterBoardroom, exitBoardroom } from "./boardroom.js";
import { floatText, steam, confettiBurst, heartFloat } from "./particles.js";
import { charColor, chibiInBox } from "./sprites.js";
import { sfx } from "./audio.js";
import { setupTouch } from "./touch.js";

const ROAM_SECONDS = 20;
const FIRST_CRISIS_SECONDS = 5;
const INTERACT_DIST = 58; // must beat worst-case approach: blocked below a desk

let player, world, ctx;
let floorOpts = {};
let inBoardroom = false;
let worldObjects = { newspaper: null, envelope: null };

// ----------------------------------------------------------------- helpers

function fitStage() {
  const wrap = G.els["stage-wrap"];
  const scale = Math.min(wrap.clientWidth / 648, wrap.clientHeight / 488, 1.6);
  G.els.stage.style.transform = `scale(${Math.max(scale, 0.5)})`;
}

function arrivalSpot(event) {
  switch (event.arrival) {
    case "newspaper": return SPOTS.newspaperLanding;
    case "envelope": return SPOTS.playerDesk;
    case "phone": return SPOTS.phone;
    case "hr": return SPOTS.inbox;
    case "boardroom": return SPOTS.boardroomDoor;
    default: return NPC_SPOTS[event.affected_npc] || SPOTS.inbox;
  }
}

function promptFor(event) {
  switch (event.arrival) {
    case "newspaper": return "SPACE — PICK UP";
    case "envelope": return "SPACE — OPEN ENVELOPE";
    case "phone": return "SPACE — ANSWER";
    case "hr": return "SPACE — CHECK INBOX";
    case "boardroom": return "ENTER — BOARDROOM";
    default: return "SPACE — TALK";
  }
}

let promptEl = null;
function showPrompt(x, y, text, gold = false) {
  if (!promptEl) {
    promptEl = document.createElement("div");
    promptEl.className = "prompt-box";
    G.els.fx.appendChild(promptEl);
  }
  promptEl.className = "prompt-box" + (gold ? " gold" : "");
  promptEl.style.left = `${x}px`;
  promptEl.style.top = `${y - 64}px`;
  // on touch there's no keyboard: the on-screen ACT/GIFT buttons do these
  promptEl.textContent = document.body.classList.contains("touch")
    ? text.replace(/SPACE|ENTER/g, "ACT").replace(/\bG\b/g, "GIFT")
    : text;
  promptEl.style.display = "block";
}
function hidePrompt() { if (promptEl) promptEl.style.display = "none"; }

// --------------------------------------------------------- event arrivals

function stageArrival(event) {
  G.pendingEvent = event;
  // kick off the setup comic now so FLUX renders during the walk to the NPC;
  // it's purely decorative — if it isn't ready in time we just skip it.
  G.setupComicImg = null;
  if (event.image_prompt) {
    api.comic(G.sessionId, event.image_prompt)
      .then((r) => { G.setupComicImg = r.image_b64 || null; })
      .catch(() => {});
  }
  switch (event.arrival) {
    case "npc":
      sfx.bubble();
      world.showBubble(event.affected_npc, "danger");
      banner(`${event.affected_npc.toUpperCase()} HAS A SITUATION`);
      break;
    case "npc_amber":
      sfx.amberBubble();
      world.showBubble(event.affected_npc, "amber");
      banner("SOMETHING PERSONAL IS HAPPENING", "gold");
      break;
    case "npc_heart":
      sfx.heart();
      world.showBubble(event.affected_npc, "heart");
      banner(`${event.affected_npc.toUpperCase()} WANTS A WORD...`, "gold");
      break;
    case "newspaper": {
      sfx.newspaper();
      banner("! THE PRESS HAS THE STORY", "red");
      const np = document.createElement("div");
      np.className = "newspaper falling";
      np.style.left = `${SPOTS.newspaperLanding.x - 17}px`;
      np.style.top = `${SPOTS.newspaperLanding.y - 12}px`;
      np.textContent = "VELOURA EXEC DOES SOMETHING — sources say Brad";
      G.els.world.appendChild(np);
      worldObjects.newspaper = np;
      world.npcs.brad.setPose("slump");
      break;
    }
    case "envelope": {
      sfx.envelope();
      const env = document.createElement("div");
      env.className = "envelope";
      env.style.left = `${SPOTS.playerDesk.x + 8}px`;
      env.style.top = `${SPOTS.playerDesk.y + 10}px`;
      G.els.world.appendChild(env);
      worldObjects.envelope = env;
      banner("AN ENVELOPE HAS ARRIVED", "gold");
      break;
    }
    case "phone":
      floorOpts.phoneRing = true;
      sfx.phoneRingStart();
      banner("! CLIENT CALL INCOMING", "red");
      break;
    case "hr":
      fx.hrStamp();
      floorOpts.inboxLit = true;
      banner("! HR WOULD LIKE A WORD", "red", true);
      break;
    case "boardroom":
      floorOpts.doorGlow = true;
      banner("THE BOARD AWAITS — ENTER THE BOARDROOM", "gold", true);
      sfx.gold();
      break;
  }
}

function clearArrivalProps(event) {
  world.clearBubbles();
  floorOpts.phoneRing = false;
  sfx.phoneRingStop();
  floorOpts.inboxLit = false;
  if (event && event.arrival === "newspaper" && worldObjects.newspaper) {
    worldObjects.newspaper.className = "newspaper floor"; // stays. a reminder.
    worldObjects.newspaper = null;
  }
  if (worldObjects.envelope) { worldObjects.envelope.remove();
    worldObjects.envelope = null; }
}

// -------------------------------------------------------------- crisis flow

async function fireNextEvent() {
  if (G.busy || G.pendingEvent || dlg.isOpen()) return;
  G.busy = true;
  try {
    const { event, state } = await api.nextEvent(G.sessionId);
    setState(state);
    updateHud(state);
    if (event.kind === "review") { await showReview(); return; }
    stageArrival(event);
  } catch (err) {
    console.error(err);
    G.roamTimer = 6; // retry shortly
  } finally {
    G.busy = false;
    fx.edgePulse(false);
    G.telegraphed = false;
  }
}

function openPendingEvent() {
  const event = G.pendingEvent;
  if (!event) return;
  sfx.phoneRingStop(); // answered
  if (event.kind === "presentation") { startPresentation(event); return; }
  fx.dim(true);
  player.frozen = true;
  // setup comic (if FLUX finished during the walk) plays first, then dialogue
  const setupImg = G.setupComicImg;
  G.setupComicImg = null;
  comic.showComic(setupImg, event.comic_caption, () => dlg.openCrisis(event, async (responseType, text) => {
    if (G.busy) return;
    G.busy = true;
    const optLabel = event.special === "romance"
      ? { option_a: "LEAN IN", option_b: "KEEP IT PROFESSIONAL" }
      : event.special === "bribery"
      ? { option_a: "ACCEPT", option_b: "DECLINE" }
      : { option_a: "OPTION A", option_b: "OPTION B" };
    const youSaid = text || optLabel[responseType] || responseType;
    dlg.showThinking(event.affected_npc !== "player"
      ? event.affected_npc : "the office");
    const t0 = Date.now();
    try {
      const { outcome, state } = await api.respond(G.sessionId, responseType, text);
      // fallbacks land fast — keep the thinking rhythm consistent (UI_UX §22)
      const wait = Math.max(0, 1200 - (Date.now() - t0));
      setTimeout(() => {
        setState(state);
        clearArrivalProps(event);
        G.pendingEvent = null;
        updateHud(state);
        renderTrail(state.paper_trail);
        if (outcome.revenue_delta !== 0) {
          revenueFloat(outcome.revenue_delta);
          (outcome.revenue_delta > 0 ? sfx.moneyUp : sfx.moneyDown)();
        }
        fx.playOutcome(outcome.animation, outcome.npc_id, world);
        world.applyMoods(state.npc_moods);
        floorOpts.gloomy = state.ambient === "gloomy";
        const showAfter = () => dlg.showAftermath(outcome, youSaid, () => {
          dlg.close();
          fx.dim(false);
          player.frozen = false;
          startRoam();
        });
        // payoff comic: only exists after the outcome lands, so it renders now
        // (thinking box stays up) and swaps to the aftermath when dismissed
        if (outcome.image_prompt) {
          api.comic(G.sessionId, outcome.image_prompt)
            .then((r) => comic.showComic(r.image_b64, outcome.comic_caption, showAfter))
            .catch(showAfter);
        } else {
          showAfter();
        }
        G.busy = false;
      }, wait);
    } catch (err) {
      console.error(err);
      G.busy = false;
      dlg.close(); fx.dim(false); player.frozen = false; startRoam();
    }
  }));
}

function startRoam() {
  clearBanner();
  if (G.state && G.state.phase === "review") { showReview(); return; }
  G.roamTimer = ROAM_SECONDS;
  G.telegraphed = false;
  G.idleRolled = false;
  G.idleAt = ROAM_SECONDS - 6;
  chattedNpcs.clear();
}

// -------------------------------------------------------- presentation flow

async function startPresentation(event) {
  G.pendingEvent = null; // consume — re-pressing SPACE must not re-enter
  floorOpts.doorGlow = false;
  clearBanner();
  player.frozen = true;
  G.busy = true;
  try {
    const { round_data, state } = await api.presentationRound(G.sessionId, "", "");
    setState(state);
    fx.wipe(() => {
      inBoardroom = true;
      G.els.world.style.visibility = "hidden";
      enterBoardroom(round_data.presenting_npc, round_data.npc_state);
      setTimeout(() => presentRound(round_data), 1200);
    });
  } catch (err) { console.error(err); player.frozen = false; }
  G.busy = false;
}

function presentRound(rd) {
  dlg.openBoardRound(rd, async (responseType, text) => {
    if (G.busy) return;
    G.busy = true;
    dlg.showThinking("the board");
    try {
      const { round_data, state } = await api.presentationRound(
        G.sessionId, responseType, text);
      setState(state);
      updateHud(state);
      if (round_data.kind === "round") {
        presentRound(round_data);
      } else {
        // outcome
        renderTrail(state.paper_trail);
        if (round_data.revenue_delta !== 0) revenueFloat(round_data.revenue_delta);
        (round_data.revenue_delta >= 0 ? sfx.moneyUp : sfx.moneyDown)();
        dlg.showPresentationOutcome(round_data, async () => {
          dlg.close();
          G.pendingEvent = null;
          if (round_data.final) { await showReview(); return; }
          fx.wipe(() => {
            exitBoardroom();
            inBoardroom = false;
            G.els.world.style.visibility = "visible";
            player.frozen = false;
            world.applyMoods(G.state.npc_moods);
            startRoam();
          });
        });
      }
    } catch (err) { console.error(err); }
    G.busy = false;
  });
}

// -------------------------------------------------------------- review flow

const TIER_COLOR = {
  hit_target: "var(--bds-neon-lime)", above_600k: "var(--bds-kevin)",
  "300k_to_600k": "#ff9c3c", below_300k: "var(--bds-brad)",
};
const TIER_HEAD = {
  hit_target: "THE GAME SHIPPED. SOMEHOW.",
  above_600k: "THE BOARD IS NOT NOT IMPRESSED",
  "300k_to_600k": "THE BOARD WANTS A CALL",
  below_300k: "THE BOARD HAS DRAFTED SOMETHING",
};

async function showReview() {
  dlg.close(); fx.dim(false);
  let data;
  try { ({ review: data } = await api.review(G.sessionId)); }
  catch (err) { console.error(err); return; }
  const el = G.els["review-screen"];
  const color = TIER_COLOR[data.tier];
  el.innerHTML = `
    <div class="rv-card" style="--rv-color:${color}">
      <div class="rv-head">Q3 QUARTERLY REVIEW</div>
      <div class="rv-revenue" id="rv-count">$0</div>
      <div class="rv-gap">${data.gap >= 0 ? "+" : "-"}$${Math.abs(data.gap)
        .toLocaleString()} vs $1,000,000 target</div>
      <div class="rv-line">${TIER_HEAD[data.tier]}</div>
      <div class="rv-section">
        <div class="rv-line">FINAL TITLE: <span class="rv-title">
          ${escapeHtml(data.boss_title).toUpperCase()}</span></div>
        <div class="rv-line">CRISES SURVIVED: ${data.crises_survived} ·
          PRESS DISASTERS: ${data.press_disasters}</div>
      </div>
      <div class="rv-section">
        <div class="rv-sec-head">THE QUARTER'S GREATEST HITS</div>
        ${data.highlights.map((h) => `<div class="rv-line">
          <span style="color:${h.npc === "board" ? "#ffc73b" : charColor(h.npc)}">
          ${(h.npc || "?").toUpperCase()}</span> — ${escapeHtml(h.text)}</div>`).join("")}
      </div>
      <div class="rv-section">
        <div class="rv-sec-head">THE BOARD'S VERDICT</div>
        <div class="rv-verdict">${escapeHtml(data.verdict)}</div>
      </div>
      <button class="btn-cta" id="btn-again" style="margin-top:14px;">
        PLAY AGAIN &#9654;</button>
    </div>`;
  sfx.musicStop(); // the office goes quiet for the verdict
  fx.fadeBlack(() => {
    el.classList.remove("hidden");
    sfx.review();
    // revenue count-up
    const span = el.querySelector("#rv-count");
    const total = data.final_revenue;
    let cur = 0;
    const tick = () => {
      cur = Math.min(total, cur + Math.max(5000, total / 60 | 0));
      span.textContent = "$" + cur.toLocaleString();
      if (cur < total) requestAnimationFrame(tick);
    };
    tick();
    if (data.tier === "hit_target") { confettiBurst(); setTimeout(() => sfx.win(), 500); }
    else setTimeout(() => sfx.lose(data.tier), 600);
  }, 800);
  el.querySelector("#btn-again").addEventListener("click", () => location.reload());
}

// ------------------------------------------------------------ idle moments

const chattedNpcs = new Set();

async function rollIdleMoment() {
  if (G.idleRolled || G.busy) return;
  G.idleRolled = true;
  try {
    const { idle, state } = await api.idle(G.sessionId);
    setState(state);
    if (idle.kind === "banter") {
      world.sayBubble(idle.npc_id, idle.line, 5200);
    } else if (idle.kind === "eavesdrop") {
      world.saySequence(idle.lines);
    } else if (idle.kind === "email_waiting") {
      floorOpts.inboxLit = true;
      sfx.mail();
      banner("YOU'VE GOT (INTERNAL) MAIL");
    }
  } catch (err) {
    // cap hit or phase changed mid-flight — fine, stay quiet
    if (err.status !== 409) console.error(err);
  }
}

async function startChat(npcId) {
  if (G.busy || chattedNpcs.has(npcId)) return;
  G.busy = true;
  player.frozen = true;
  fx.dim(true);
  try {
    const { chat } = await api.chat(G.sessionId, npcId, "");
    chattedNpcs.add(npcId);
    dlg.openChat(npcId, chat.npc_line, async (text) => {
      if (G.busy) return;
      G.busy = true;
      dlg.showThinking(npcId);
      try {
        const { chat: reply, state } = await api.chat(G.sessionId, npcId, text);
        setState(state);
        world.applyMoods(state.npc_moods);
        dlg.showChatReply(reply.npc_line, reply.relationship_delta, endChat);
        if (reply.relationship_delta) {
          const npc = world.npcs[npcId];
          floatText(npc.x, npc.y - 36,
            (reply.relationship_delta > 0 ? "+" : "") + reply.relationship_delta,
            reply.relationship_delta > 0
              ? "var(--bds-neon-magenta)" : "var(--bds-grey)");
        }
      } catch (err) { console.error(err); endChat(); }
      G.busy = false;
    }, endChat);
  } catch (err) {
    if (err.status === 409) {
      const npc = world.npcs[npcId];
      floatText(npc.x, npc.y - 36, "...", "var(--bds-grey-dim)");
    } else console.error(err);
    fx.dim(false);
    player.frozen = false;
  }
  G.busy = false;
}

function endChat() {
  dlg.close();
  fx.dim(false);
  player.frozen = false;
}

async function openInboxEmail() {
  if (G.busy) return;
  try {
    const { email, state } = await api.readEmail(G.sessionId);
    setState(state);
    floorOpts.inboxLit = false;
    clearBanner();
    player.frozen = true;
    fx.dim(true);
    dlg.openEmail(email, endChat);
  } catch (err) { if (err.status !== 409) console.error(err); }
}

// ----------------------------------------------------------------- gifting

function openGiftPanel(npcId) {
  if (G.state.phase !== "free_roam" || G.pendingEvent) return;
  const panel = G.els["gift-panel"];
  const tiers = [["small", "FLOWERS", 200], ["medium", "LUNCH", 350],
                 ["large", "GIFT CARD", 500]];
  panel.style.setProperty("--npc-color", charColor(npcId));
  panel.innerHTML = `
    <div class="gift-head">GIFT FOR ${npcId.toUpperCase()}</div>
    <div class="gift-balance">POCKET: $${G.state.pocket_money.toLocaleString()}
      — this is YOUR money</div>
    ${tiers.map(([tier, label, cost]) => `
      <button class="gift-row" data-tier="${tier}"
        ${G.state.pocket_money < cost ? "disabled" : ""}>
        <span>${label}</span><span>$${cost}</span></button>`).join("")}
    <button class="gift-cancel">ESC — NEVER MIND</button>`;
  panel.classList.remove("hidden");
  panel.querySelectorAll(".gift-row").forEach((b) =>
    b.addEventListener("click", async () => {
      panel.classList.add("hidden");
      try {
        const { result, state } = await api.gift(G.sessionId, npcId, b.dataset.tier);
        setState(state); updateHud(state);
        const npc = world.npcs[npcId];
        fx.playOutcome("heart_float", npcId, world);
        floatText(npc.x, npc.y - 30,
          `+${result.relationship_delta}${result.halved ? " (again so soon?)" : ""}`,
          "var(--bds-neon-magenta)");
        if (result.unlocked) floatText(npc.x, npc.y - 46, "✓ something changed",
          "#ffc73b");
        world.applyMoods(state.npc_moods);
      } catch (err) { console.error(err); }
    }));
  panel.querySelector(".gift-cancel").addEventListener("click",
    () => panel.classList.add("hidden"));
}

async function buyCoffeeRound() {
  if (G.state.pocket_money < 50) {
    floatText(SPOTS.coffee.x, SPOTS.coffee.y - 20, "NO FUNDS", "var(--bds-brad)");
    return;
  }
  try {
    const { state } = await api.gift(G.sessionId, "brad", "coffee");
    setState(state); updateHud(state);
    floatText(SPOTS.coffee.x, SPOTS.coffee.y - 24, "TEAM COFFEE -$50",
      "var(--bds-neon-lime)");
    sfx.coffee();
    world.applyMoods(state.npc_moods);
  } catch (err) { console.error(err); }
}

// -------------------------------------------------------------- interaction

function nearestInteraction() {
  if (G.pendingEvent) {
    const spot = arrivalSpot(G.pendingEvent);
    if (player.distTo(spot) < INTERACT_DIST + (G.pendingEvent.kind ===
        "presentation" ? 16 : 0))
      return { kind: "event", spot, prompt: promptFor(G.pendingEvent),
               gold: G.pendingEvent.kind === "presentation" };
  }
  if (G.state && G.state.phase === "free_roam" && !G.pendingEvent) {
    if (G.state.email_waiting && player.distTo(SPOTS.inbox) < INTERACT_DIST)
      return { kind: "email", spot: SPOTS.inbox, prompt: "SPACE — READ EMAIL" };
    for (const [id, spot] of Object.entries(NPC_SPOTS))
      if (player.distTo(spot) < INTERACT_DIST) {
        const talked = chattedNpcs.has(id);
        const parts = [];
        if (!talked) parts.push("SPACE — TALK");
        if (G.state.gift_available) parts.push("G — GIFT");
        return { kind: "npc_idle", npcId: id, spot,
                 prompt: parts.join(" / ") || "..." };
      }
    if (player.distTo(SPOTS.coffee) < INTERACT_DIST)
      return { kind: "coffee", spot: SPOTS.coffee, prompt: "SPACE — TEAM COFFEE $50" };
  }
  return null;
}

function handleInteract() {
  if (comic.isOpen()) { comic.dismissComic(); return; } // SPACE advances comic
  if (dlg.isOpen()) return;
  const hit = nearestInteraction();
  if (!hit) return;
  if (hit.kind === "event") openPendingEvent();
  else if (hit.kind === "coffee") buyCoffeeRound();
  else if (hit.kind === "email") openInboxEmail();
  else if (hit.kind === "npc_idle" && !chattedNpcs.has(hit.npcId))
    startChat(hit.npcId);
}

// --------------------------------------------------------------------- loop

let last = 0;
function loop(ts) {
  const dt = Math.min(0.05, (ts - last) / 1000 || 0.016);
  last = ts;

  if (!inBoardroom && G.phase !== "title") {
    drawFloor(ctx, floorOpts);
    player.update(dt, keys);

    // soft footsteps while walking (rate-limited inside sfx)
    if (player.pose === "walk" && !player.frozen) sfx.footstep();

    // roam countdown → next event
    if (G.state && G.state.phase === "free_roam" && !G.pendingEvent &&
        !dlg.isOpen() && !G.busy && !G.state.game_over) {
      G.roamTimer -= dt;
      if (!G.idleRolled && G.idleAt >= 0 && G.roamTimer <= G.idleAt)
        rollIdleMoment(); // one AI ambient moment per gap, ~6s in
      if (G.roamTimer <= 3 && !G.telegraphed) {
        fx.edgePulse(true); G.telegraphed = true;
      }
      if (G.roamTimer <= 0) fireNextEvent();
    }

    // proximity prompt
    const hit = nearestInteraction();
    if (hit) showPrompt(hit.spot.x, hit.spot.y, hit.prompt, hit.gold);
    else hidePrompt();

    // ambient steam
    if (Math.random() < 0.02) steam(SPOTS.coffee.x, SPOTS.coffee.y - 14);

    // a heart drifts over whoever the player is dating
    if (G.state && Math.random() < 0.012) {
      const romancing = Object.entries(G.state.npc_romance || {})
        .find(([, s]) => s === "active");
      if (romancing) {
        const npc = world.npcs[romancing[0]];
        if (npc) heartFloat(npc.x, npc.y - 44);
      }
    }
  }
  requestAnimationFrame(loop);
}

// --------------------------------------------------------------------- boot

async function startGame() {
  const { session_id, state } = await api.newGame();
  G.sessionId = session_id;
  setState(state);
  resetTrail();
  updateHud(state, false);
  G.els["title-screen"].classList.add("hidden");
  G.els.hud.classList.remove("hidden");
  requestAnimationFrame(fitStage); // re-fit now that the HUD shrinks the frame
  banner("> a crisis approaches...", "");
  G.roamTimer = FIRST_CRISIS_SECONDS;
  G.idleRolled = false;
  G.idleAt = -1; // no ambient moment in the short intro gap
  sfx.open();
  sfx.musicStart(); // looping background music (static/audio/bgm.mp3)
}

function buildTitleCast() {
  const cast = document.getElementById("ts-cast");
  if (!cast) return;
  const lineup = [
    ["brad", { armPose: "out", mouth: "open" }],
    ["stacey", { armPose: "wring", mouth: "smile" }],
    ["kevin", { armPose: "point", mouth: "smirk" }],
    ["janet", { armPose: "open", mouth: "open" }],
    ["derek", { mouth: "flat" }],
  ];
  for (const [id, expr] of lineup) {
    const slot = document.createElement("div");
    slot.className = "cast-slot";
    slot.appendChild(chibiInBox(id, expr, 60, 72));
    const name = document.createElement("div");
    name.className = "cast-name";
    name.textContent = id.toUpperCase();
    name.style.color = charColor(id);
    slot.appendChild(name);
    cast.appendChild(slot);
  }
}

function init() {
  cacheEls();
  window.BDS_DEBUG = G; // read-only debug/test handle
  buildTitleCast();
  setupTouch(); // on-screen joystick + buttons for phones/tablets
  api.warm().catch(() => {}); // wake Modal while the player reads the title
  ctx = G.els.floor.getContext("2d");
  player = createPlayer(G.els.world);
  world = createNpcs(G.els.world);
  fitStage();
  window.addEventListener("resize", fitStage);

  document.getElementById("btn-start").addEventListener("click", startGame);

  on("interact", handleInteract);
  on("gift", () => {
    const hit = nearestInteraction();
    if (hit && hit.kind === "npc_idle" && G.state.gift_available)
      openGiftPanel(hit.npcId);
  });
  on("escape", () => {
    G.els["gift-panel"].classList.add("hidden");
    // ESC closes a crisis dialogue only before a response is sent —
    // the crisis stays pending (bubble remains, walk back to reopen)
    if (dlg.isOpen() && dlg.stage() === "question" && !G.busy &&
        G.pendingEvent && G.pendingEvent.kind !== "presentation") {
      dlg.close();
      fx.dim(false);
      player.frozen = false;
    }
  });
  on("option", (which) => dlg.chooseOption(which));
  on("mute", () => sfx.toggleMute());

  bindStageClick(G.els.stage, (x, y) => {
    if (dlg.isOpen() || player.frozen || typingMode) return;
    player.target = { x, y };
    // clicking near an interactable walks there; arrival handled by prompts
  });

  requestAnimationFrame(loop);
}

init();