'use strict';
/* ============================================================
   NEON SURVIVORS — data.js : all game content definitions
   Weapons / Evolutions / Passives / Characters / Enemies /
   Bosses / Spawn timeline / Meta shop.
   ============================================================ */

/* ---------------- WEAPONS ----------------
   Stat model: effective stat = base + sum(per[0..level-2])
   dmg   damage per hit        cd    seconds between activations
   n     projectile/count      spd   projectile speed (px/s)
   pierce extra enemies pierced dur   lifetime (s)
   area  size multiplier       kb    knockback impulse
*/
const WEAPONS = {
  wand: {
    sym: '🪄', col: '#b39dff', max: 8,
    base: { dmg: 12, cd: 1.1, n: 1, spd: 430, pierce: 0, dur: 1.6, area: 1, kb: 40 },
    per: [
      { dmg: 5 }, { n: 1 }, { cd: -0.15 }, { dmg: 6 },
      { n: 1, spd: 60 }, { pierce: 1, dmg: 4 }, { n: 1 }, { cd: -0.15, dmg: 8 }
    ],
    evo: { into: 'e_wand', need: 'p_cd' }
  },
  whip: {
    sym: '🩹', col: '#ff7a9c', max: 8,
    base: { dmg: 14, cd: 1.35, n: 1, area: 1.1, kb: 140 },
    per: [
      { dmg: 6 }, { area: 0.15 }, { dmg: 8 }, { n: 1 },
      { dmg: 10 }, { area: 0.2 }, { cd: -0.15 }, { dmg: 12 }
    ],
    evo: { into: 'e_whip', need: 'p_hp' }
  },
  knife: {
    sym: '🔪', col: '#cfe8ff', max: 8,
    base: { dmg: 8, cd: 0.9, n: 2, spd: 520, pierce: 0, dur: 1.1, kb: 20 },
    per: [
      { n: 1 }, { dmg: 4 }, { n: 2 }, { dmg: 4 },
      { pierce: 1 }, { n: 2 }, { dmg: 6 }, { n: 2, spd: 80 }
    ],
    evo: { into: 'e_knife', need: 'p_spd' }
  },
  orb: {
    sym: '🔮', col: '#7dfaff', max: 8,
    base: { dmg: 10, cd: 1.0, n: 2, spd: 2.4, area: 1, hitCd: 0.5 },
    per: [
      { n: 1 }, { spd: 0.4 }, { dmg: 5 }, { n: 1 },
      { area: 0.15 }, { dmg: 6 }, { n: 1, spd: 0.4 }, { dmg: 8, area: 0.15 }
    ],
    evo: { into: 'e_orb', need: 'p_area' }
  },
  axe: {
    sym: '🪓', col: '#ffb347', max: 8,
    base: { dmg: 26, cd: 1.7, n: 1, spd: 240, pierce: 99, area: 1, kb: 200, grav: 900 },
    per: [
      { dmg: 12 }, { n: 1 }, { dmg: 12 }, { n: 1 },
      { area: 0.25 }, { dmg: 16 }, { n: 1, cd: -0.2 }, { dmg: 20 }
    ],
    evo: { into: 'e_axe', need: 'p_might' }
  },
  garlic: {
    sym: '💡', col: '#fff3b0', max: 8,
    base: { dmg: 5, cd: 0.45, area: 1, kb: 90, radius: 95 },
    per: [
      { area: 0.18 }, { dmg: 3 }, { area: 0.18 }, { kb: 40 },
      { dmg: 4 }, { area: 0.22 }, { dmg: 5, cd: -0.05 }, { area: 0.25, dmg: 6 }
    ],
    evo: { into: 'e_garlic', need: 'p_regen' }
  },
  light: {
    sym: '⚡', col: '#9bf6ff', max: 8,
    base: { dmg: 30, cd: 2.2, n: 2, area: 1, blastR: 70 },
    per: [
      { n: 1 }, { dmg: 12 }, { n: 1 }, { area: 0.2 },
      { dmg: 16 }, { n: 1 }, { cd: -0.3 }, { dmg: 20, n: 1 }
    ],
    evo: { into: 'e_light', need: 'p_dur' }
  },
  fire: {
    sym: '🔥', col: '#ff8c42', max: 8,
    base: { dmg: 20, cd: 2.0, n: 1, spd: 300, area: 1, blastR: 85, burnDps: 8, burnDur: 2, kb: 60 },
    per: [
      { dmg: 8 }, { n: 1 }, { dmg: 10 }, { area: 0.25 },
      { n: 1 }, { dmg: 12 }, { cd: -0.3 }, { area: 0.3, dmg: 14 }
    ],
    evo: { into: 'e_fire', need: 'p_luck' }
  },
  frost: {
    sym: '❄️', col: '#a0e7ff', max: 8,
    base: { dmg: 10, cd: 1.2, n: 1, spd: 480, pierce: 2, dur: 1.4, slow: 0.35, slowDur: 2, kb: 30 },
    per: [
      { n: 1 }, { dmg: 5 }, { slow: 0.1 }, { pierce: 2 },
      { dmg: 6 }, { n: 1 }, { slow: 0.1, dmg: 6 }, { n: 2, dmg: 8 }
    ],
    evo: { into: 'e_frost', need: 'p_mag' }
  },
  cross: {
    sym: '✝️', col: '#ffffff', max: 8,
    base: { dmg: 16, cd: 1.9, n: 1, spd: 420, pierce: 99, dur: 2.2, area: 1, rehit: 0.45, kb: 80 },
    per: [
      { dmg: 8 }, { n: 1 }, { dmg: 8 }, { spd: 60 },
      { n: 1 }, { dmg: 10 }, { dur: 0.4, area: 0.15 }, { n: 1, dmg: 12 }
    ],
    evo: { into: 'e_cross', need: 'p_move' }
  },
  mine: {
    sym: '🧨', col: '#ff6b9d', max: 8,
    base: { dmg: 26, cd: 2.6, n: 1, dur: 10, blastR: 85, kb: 140, pierce: 0 },
    per: [
      { dmg: 10 }, { dur: 2 }, { blastR: 15 }, { n: 1 },
      { dmg: 14 }, { cd: -0.4 }, { blastR: 20, dmg: 12 }, { n: 1, dmg: 18 }
    ],
    evo: { into: 'e_mine', need: 'p_area' }
  }
};

/* ---------------- EVOLVED WEAPONS (max level 1, from chests) ---------------- */
const EVOLVED = {
  e_mine:  { sym: '💣', col: '#ff4d88', base: { dmg: 55, cd: 1.5, n: 3, dur: 14, blastR: 150, kb: 220 } },
  e_wand:  { sym: '🌟', col: '#ffe066', base: { dmg: 30, cd: 0.55, n: 6, spd: 560, pierce: 2, dur: 1.8, kb: 60 } },
  e_whip:  { sym: '🩸', col: '#ff4d6d', base: { dmg: 44, cd: 1.0, n: 2, area: 1.5, kb: 180, lifesteal: 0.08 } },
  e_knife: { sym: '🗡️', col: '#e8fbff', base: { dmg: 18, cd: 0.45, n: 8, spd: 640, pierce: 3, dur: 1.2, kb: 20 } },
  e_orb:   { sym: '💫', col: '#7dfaff', base: { dmg: 28, cd: 0.35, n: 6, spd: 3.4, area: 1.5, hitCd: 0.4 } },
  e_axe:   { sym: '🌀', col: '#ffd166', base: { dmg: 70, cd: 1.2, n: 4, spd: 320, pierce: 999, area: 1.6, kb: 260, grav: 700 } },
  e_garlic:{ sym: '😇', col: '#fffbe0', base: { dmg: 16, cd: 0.3, area: 1.9, kb: 160, radius: 175, healOnKill: 1 } },
  e_light: { sym: '🌩️', col: '#d0fbff', base: { dmg: 65, cd: 1.3, n: 5, area: 1.4, blastR: 100, chain: 2, stun: 1.0 } },
  e_fire:  { sym: '☄️', col: '#ff5c33', base: { dmg: 50, cd: 1.4, n: 2, spd: 340, area: 1.7, blastR: 130, burnDps: 30, burnDur: 4, groundDur: 3.5, groundDps: 35, kb: 90 } },
  e_frost: { sym: '💠', col: '#cdf5ff', base: { dmg: 34, cd: 0.9, n: 3, spd: 560, pierce: 99, dur: 1.6, slow: 0.6, slowDur: 2.5, freeze: 1.4, kb: 40 } },
  e_cross: { sym: '⚜️', col: '#ffffff', base: { dmg: 60, cd: 1.5, n: 2, spd: 500, pierce: 999, dur: 3.2, area: 1.8, rehit: 0.4, kb: 120 } }
};

/** Unified weapon definition accessor. */
function wdef(id) { return EVOLVED[id] || WEAPONS[id]; }

/** Compute effective stats for a weapon at a given level. */
function wstats(id, lvl) {
  const ev = EVOLVED[id];
  if (ev) return Object.assign({}, ev.base);
  const d = WEAPONS[id];
  const s = Object.assign({}, d.base);
  for (let i = 0; i < Math.min(lvl - 1, d.per.length); i++) {
    const add = d.per[i];
    for (const k in add) s[k] = (s[k] || 0) + add[k];
  }
  s.cd = Math.max(0.12, s.cd);
  return s;
}

/* ---------------- PASSIVES ---------------- */
const PASSIVES = {
  p_might:  { sym: '💪', col: '#ff7a7a', max: 5, val: 0.10 },
  p_armor:  { sym: '🛡️', col: '#9db4ff', max: 5, val: 1 },
  p_hp:     { sym: '❤️', col: '#ff5f7a', max: 5, val: 0.20 },
  p_regen:  { sym: '🌿', col: '#7dff9e', max: 5, val: 0.6 },
  p_cd:     { sym: '⏱️', col: '#7dd0ff', max: 5, val: 0.08 },
  p_area:   { sym: '🌐', col: '#c07dff', max: 5, val: 0.12 },
  p_spd:    { sym: '🏹', col: '#ffd57d', max: 5, val: 0.15 },
  p_dur:    { sym: '⌛', col: '#ffc7ec', max: 5, val: 0.15 },
  p_move:   { sym: '👟', col: '#9effd0', max: 5, val: 0.10 },
  p_mag:    { sym: '🧲', col: '#ffa8f6', max: 5, val: 0.30 },
  p_luck:   { sym: '🍀', col: '#8aff6b', max: 5, val: 0.10 },
  p_greed:  { sym: '💰', col: '#ffd24a', max: 5, val: 0.20 },
  p_growth: { sym: '📘', col: '#7db8ff', max: 5, val: 0.10 }
};

/** Passive name/desc keys derive from id: p_might -> 'p_might'/'p_might_d'. */

/* ---------------- CHARACTERS ---------------- */
const CHARS = {
  kaito: { sym: '🧙', col: '#9b8cff', weapon: 'wand',
    mods: {},
    cond: { key: 'cond_free', fn: () => true } },
  mira: { sym: '🛡️', col: '#ff9db0', weapon: 'whip',
    mods: { armorFlat: 1, hpMul: 0.10 },
    cond: { key: 'cond_kills500', fn: () => Store.data.totals.kills >= 500 } },
  bolt: { sym: '⚡', col: '#ffe066', weapon: 'knife',
    mods: { moveMul: 0.12, pspdMul: 0.15 },
    cond: { key: 'cond_time10', fn: () => Store.data.totals.best >= 600 } },
  luna: { sym: '🌙', col: '#b8a9ff', weapon: 'orb',
    mods: { areaMul: 0.18, cdrMul: 0.10 },
    cond: { key: 'cond_gold2000', fn: () => Store.data.totals.gold >= 2000 } },
  rook: { sym: '🪓', col: '#ffb347', weapon: 'axe',
    mods: { dmgMul: 0.20, moveMul: -0.05 },
    cond: { key: 'cond_boss1', fn: () => !!Store.data.flags.boss1 } },
  nyx: { sym: '🧛', col: '#ff6b81', weapon: 'garlic',
    mods: { regenFlat: 0.4, magMul: 0.40 },
    cond: { key: 'cond_time15', fn: () => Store.data.totals.best >= 900 } },
  sera: { sym: '🌩️', col: '#7dfaff', weapon: 'light',
    mods: { cdrMul: 0.12, luckFlat: 0.05 },
    cond: { key: 'cond_win', fn: () => Store.data.totals.wins >= 1 } },
  vane: { sym: '✝️', col: '#e8e8ff', weapon: 'cross',
    mods: { luckFlat: 0.15, greedMul: 0.10 },
    cond: { key: 'cond_kills5000', fn: () => Store.data.totals.kills >= 5000 } },
  hana: { sym: '🏹', col: '#7dff9e', weapon: 'mine',
    mods: { critC: 0.15, critM: 0.3 },
    cond: { key: 'cond_time15', fn: () => Store.data.totals.best >= 900 } },
  bram: { sym: '🧱', col: '#c96f4a', weapon: 'fire',
    mods: { areaMul: 0.20, moveMul: -0.05, hpMul: 0.10 },
    cond: { key: 'cond_gold2000', fn: () => Store.data.totals.gold >= 2000 } }
};

/* ---------------- COSMETIC SKINS ----------------
 * Deterministic per-character palettes; purchasable with gold.
 */
const SKIN_POOL = [
  { key: 'ember', col: '#ff8c42', vi: 'Lửa',   en: 'Ember', price: 300 },
  { key: 'frost', col: '#7fdcff', vi: 'Băng',  en: 'Frost', price: 300 },
  { key: 'toxic', col: '#a4f94d', vi: 'Độc',   en: 'Toxic', price: 450 },
  { key: 'rose',  col: '#ff9db0', vi: 'Hồng',  en: 'Rose',  price: 450 },
  { key: 'gold',  col: '#ffd24a', vi: 'Vàng',  en: 'Gold',  price: 800 }
];

function _strHash(s) {
  let h = 2166136261;
  for (let i = 0; i < s.length; i++) { h ^= s.charCodeAt(i); h = (h * 16777619) >>> 0; }
  return h;
}

/** Two extra skins per character, chosen deterministically from the pool. */
function skinsFor(charId) {
  const h = _strHash(charId);
  const a = SKIN_POOL[h % SKIN_POOL.length];
  let b = SKIN_POOL[(h + 2) % SKIN_POOL.length];
  if (b.key === a.key) b = SKIN_POOL[(h + 4) % SKIN_POOL.length];
  return [a, b];
}

/* ---------------- ENEMIES ---------------- */
const ENEMIES = {
  bat:    { nk: 'en_bat',    hp: 8,   spd: 100, dmg: 6,  xp: 1, r: 10, col: '#b06bff', shape: 'bat',    ai: 'chase',  wiggle: 1.6 },
  zombie: { nk: 'en_zombie', hp: 18,  spd: 68,  dmg: 10, xp: 1, r: 13, col: '#6bd66b', shape: 'zombie', ai: 'chase' },
  imp:    { nk: 'en_imp',    hp: 11,  spd: 118, dmg: 8,  xp: 1, r: 10, col: '#ff8c42', shape: 'imp',    ai: 'chase',  wiggle: 2.6 },
  arch:   { nk: 'en_arch',   hp: 24,  spd: 76,  dmg: 10, xp: 2, r: 13, col: '#e8e8e8', shape: 'archer', ai: 'shooter', range: 270, bspd: 235, bcd: 2.3 },
  brute:  { nk: 'en_brute',  hp: 135, spd: 46,  dmg: 22, xp: 5, r: 24, col: '#c96f4a', shape: 'brute',  ai: 'chase',  kbRes: 0.75 },
  ghost:  { nk: 'en_ghost',  hp: 32,  spd: 82,  dmg: 12, xp: 2, r: 13, col: '#9ad5ff', shape: 'ghost',  ai: 'ghost' },
  spit:   { nk: 'en_spit',   hp: 38,  spd: 62,  dmg: 12, xp: 3, r: 15, col: '#a4f94d', shape: 'spit',   ai: 'shooter', range: 250, bspd: 210, bcd: 2.8, spread: 3 },
  garg:   { nk: 'en_garg',   hp: 95,  spd: 60,  dmg: 18, xp: 4, r: 17, col: '#8fa3b8', shape: 'garg',   ai: 'charger', chargeSpd: 340 },
  /* breakable prop — no contact damage, drops coins when smashed */
  lamp:   { nk: 'en_lamp',   hp: 26,  spd: 0,   dmg: 0,  xp: 0, r: 15, col: '#8fd0ff', shape: 'prop',   ai: 'prop',   prop: true }
};

/* Difficulty multipliers by elapsed minute. */
function diffScale(minute) {
  return {
    hp: 1 + minute * 0.5 + minute * minute * 0.035,
    dmg: 1 + minute * 0.08,
    spd: Math.min(1 + minute * 0.012, 1.3)
  };
}

/* Which enemy types can appear at a given minute (weighted evenly). */
const SPAWN_TABLE = [
  /*00*/ ['bat'],
  /*01*/ ['bat', 'zombie'],
  /*02*/ ['zombie', 'bat', 'imp'],
  /*03*/ ['zombie', 'imp', 'bat'],
  /*04*/ ['zombie', 'imp', 'arch'],
  /*05*/ ['imp', 'arch', 'zombie', 'bat'],
  /*06*/ ['arch', 'imp', 'ghost'],
  /*07*/ ['ghost', 'arch', 'brute'],
  /*08*/ ['brute', 'ghost', 'imp', 'arch'],
  /*09*/ ['brute', 'spit', 'ghost'],
  /*10*/ ['spit', 'brute', 'garg', 'imp'],
  /*11*/ ['garg', 'spit', 'ghost', 'brute'],
  /*12*/ ['garg', 'brute', 'spit', 'bat'],
  /*13*/ ['garg', 'spit', 'brute', 'ghost'],
  /*14*/ ['garg', 'brute', 'spit', 'garg'],
  /*15*/ ['garg', 'brute', 'spit', 'ghost'],
  /*16*/ ['garg', 'brute', 'spit', 'imp'],
  /*17*/ ['garg', 'brute', 'garg', 'spit'],
  /*18*/ ['garg', 'brute', 'spit', 'garg'],
  /*19*/ ['garg', 'brute', 'spit', 'garg']
];

/* Elite spawn schedule (seconds). Elites drop treasure chests. */
const ELITE_TIMES = [70, 145, 220, 295, 370, 445, 520, 595, 670, 745, 820, 895, 970, 1045, 1120];

/* Random elite modifiers — one may roll on spawn (65%). Bilingual inline. */
const ELITE_AFFIXES = {
  haste: { icon: '⚡', vi: 'Tốc Độ',   en: 'Swift',   col: '#ffe066',
    apply(e) { e.spd *= 1.45; } },
  tank:  { icon: '🛡️', vi: 'Cứng Cáp', en: 'Sturdy',  col: '#9db4ff',
    apply(e) { e.hp *= 1.6; e.maxhp = e.hp; e.dmg *= 1.15;
               e.kbRes = Math.min(0.92, (e.def.kbRes || 0) + 0.55); } },
  blast: { icon: '💥', vi: 'Nổ Tung',  en: 'Volatile', col: '#ff8c42',
    apply(e) { e.blastOnDeath = true; } }
};

/* Boss plan — killing the final boss wins the run. */
const RUN_LENGTH = 1200;
const BOSS_PLAN = [
  { t: 300,  id: 'b_wolf' },
  { t: 600,  id: 'b_lich' },
  { t: 900,  id: 'b_behemoth' },
  { t: 1140, id: 'b_death' }
];

const BOSSES = {
  b_wolf:     { nk: 'bn_wolf',     hp: 850,   spd: 165, dmg: 25, r: 30, col: '#8a5cff', shape: 'wolf',     ai: 'boss_wolf',  xp: 60 },
  b_lich:     { nk: 'bn_lich',     hp: 2400,  spd: 58,  dmg: 28, r: 30, col: '#c9f0ff', shape: 'lich',     ai: 'boss_lich',  xp: 100 },
  b_behemoth: { nk: 'bn_behemoth', hp: 6500,  spd: 42,  dmg: 34, r: 44, col: '#ff5c5c', shape: 'behemoth', ai: 'boss_beho',  xp: 160 },
  b_death:    { nk: 'bn_death',    hp: 15000, spd: 195, dmg: 45, r: 34, col: '#ddddff', shape: 'death',    ai: 'boss_death', xp: 400 }
};

/* ---------------- STAGES ----------------
 * Each biome swaps the spawn table / boss plan / palette and applies
 * hp/gold multipliers. Killing the plan's final boss wins (unless Endless).
 */
const STAGES = {
  graveyard: {
    id: 'graveyard', icon: '🪦', unlock: () => true,
    music: { shift: 0, tempo: 1 },
    bg: { grid: 'rgba(90,90,160,0.10)', mote: ['#5a4d9c', '#3f7fb0'] },
    table: SPAWN_TABLE,
    plan: [
      { t: 300,  id: 'b_wolf' },
      { t: 600,  id: 'b_lich' },
      { t: 900,  id: 'b_behemoth' },
      { t: 1140, id: 'b_death', final: true }
    ],
    length: RUN_LENGTH,
    hpMul: 1, goldMul: 1
  },
  frostcave: {
    id: 'frostcave', icon: '❄️', unlock: s => s.flags.time10,
    music: { shift: -3, tempo: 0.92 },   // darker, slower
    lockKey: 'st_lock_frost',
    bg: { grid: 'rgba(120,190,255,0.10)', mote: ['#7fc8ff', '#b0e8ff'] },
    table: (() => {
      // colder mix: ghosts early, brutes mid, gargs sooner
      const t = SPAWN_TABLE.map(r => r.slice());
      t[2] = ['ghost', 'zombie', 'bat'];
      t[6] = ['ghost', 'arch', 'imp'];
      t[9] = ['brute', 'garg', 'spit'];
      t[12] = ['garg', 'garg', 'spit', 'brute'];
      return t;
    })(),
    plan: [
      { t: 240,  id: 'b_lich' },
      { t: 540,  id: 'b_wolf' },
      { t: 870,  id: 'b_behemoth' },
      { t: 1140, id: 'b_death', final: true }
    ],
    length: RUN_LENGTH,
    hpMul: 1.12, goldMul: 1.25
  },
  magmalands: {
    id: 'magmalands', icon: '🌋', unlock: s => s.totals.wins >= 1,
    music: { shift: 2, tempo: 1.08 },    // hotter, faster
    lockKey: 'st_lock_magma',
    bg: { grid: 'rgba(255,120,60,0.09)', mote: ['#ff8c42', '#ffd166'] },
    table: (() => {
      // violent mix: imps early, spitters sooner, heavy late
      const t = SPAWN_TABLE.map(r => r.slice());
      t[1] = ['bat', 'imp'];
      t[4] = ['imp', 'spit', 'zombie'];
      t[7] = ['spit', 'brute', 'garg'];
      t[10] = ['garg', 'brute', 'brute', 'spit'];
      t[16] = ['garg', 'garg', 'brute', 'brute'];
      return t;
    })(),
    plan: [
      { t: 210,  id: 'b_behemoth' },
      { t: 480,  id: 'b_lich' },
      { t: 780,  id: 'b_wolf' },
      { t: 1080, id: 'b_death', final: true }
    ],
    length: RUN_LENGTH,
    hpMul: 1.28, goldMul: 1.5
  }
};

/* ---------------- META SHOP ---------------- */
const META_SHOP = [
  { id: 'might',  sym: '💪', base: 100, max: 5 },
  { id: 'hp',     sym: '❤️', base: 100, max: 5 },
  { id: 'armor',  sym: '🛡️', base: 120, max: 5 },
  { id: 'regen',  sym: '🌿', base: 150, max: 5 },
  { id: 'spd',    sym: '👟', base: 120, max: 5 },
  { id: 'cd',     sym: '⏱️', base: 180, max: 5 },
  { id: 'growth', sym: '📘', base: 130, max: 5 },
  { id: 'greed',  sym: '💰', base: 130, max: 5 },
  { id: 'luck',   sym: '🍀', base: 140, max: 5 },
  { id: 'magnet', sym: '🧲', base: 110, max: 5 },
  { id: 'reroll', sym: '🎲', base: 150, max: 3 },
  { id: 'revive', sym: '🕊️', base: 350, max: 2 }
];
function metaCost(def, rank) { return Math.round(def.base * Math.pow(1.7, rank)); }