// ─── Game Constants ───────────────────────────────────────────────────────────

import type { ElementDef, GuardianDef, SpellDef, SkillDef, PrestigeDef, SpellCost } from './types';

// Time constants
export const TICK_MS = 200;
export const HOURS_PER_TICK = 0.04; // 200ms / 5000ms per in-game hour
export const MAX_DAY = 30;
export const INCURSION_START_DAY = 20;

// Mana constants
export const MANA_PER_ELEMENT = 100;

// Helper function for creating raw mana cost
export function rawCost(amount: number): SpellCost {
  return { type: 'raw', amount };
}

// Helper function for creating elemental mana cost
export function elemCost(element: string, amount: number): SpellCost {
  return { type: 'element', element, amount };
}

// ─── Element Definitions ─────────────────────────────────────────────────────
export const ELEMENTS: Record<string, ElementDef> = {
  // Base Elements
  fire:   { name: "Fire",   sym: "🔥", color: "#FF6B35", glow: "#FF6B3540", cat: "base" },
  water:  { name: "Water",  sym: "💧", color: "#4ECDC4", glow: "#4ECDC440", cat: "base" },
  air:    { name: "Air",    sym: "🌬️", color: "#00D4FF", glow: "#00D4FF40", cat: "base" },
  earth:  { name: "Earth",  sym: "⛰️", color: "#F4A261", glow: "#F4A26140", cat: "base" },
  light:  { name: "Light",  sym: "☀️", color: "#FFD700", glow: "#FFD70040", cat: "base" },
  dark:   { name: "Dark",   sym: "🌑", color: "#9B59B6", glow: "#9B59B640", cat: "base" },
  death:  { name: "Death",  sym: "💀", color: "#778CA3", glow: "#778CA340", cat: "base" },
  
  // Utility Elements
  transference: { name: "Transference", sym: "🔗", color: "#1ABC9C", glow: "#1ABC9C40", cat: "utility" },
  
  // Composite Elements
  metal:     { name: "Metal",     sym: "⚙️", color: "#BDC3C7", glow: "#BDC3C740", cat: "composite", recipe: ["fire", "earth"] },
  sand:      { name: "Sand",      sym: "⏳", color: "#D4AC0D", glow: "#D4AC0D40", cat: "composite", recipe: ["earth", "water"] },
  lightning: { name: "Lightning", sym: "⚡", color: "#FFEB3B", glow: "#FFEB3B40", cat: "composite", recipe: ["fire", "air"] },
  
  // Exotic Elements
  crystal: { name: "Crystal", sym: "💎", color: "#85C1E9", glow: "#85C1E940", cat: "exotic", recipe: ["sand", "sand", "light"] },
  stellar: { name: "Stellar", sym: "⭐", color: "#F0E68C", glow: "#F0E68C40", cat: "exotic", recipe: ["fire", "fire", "light"] },
  void:    { name: "Void",   sym: "🕳️", color: "#4A235A", glow: "#4A235A40", cat: "exotic", recipe: ["dark", "dark", "death"] },
};

// NOTE: Life, Blood, Wood, Mental, and Force mana types have been removed.
// Lifesteal and healing are BANNED from player abilities - see AGENTS.md
// Crystal recipe updated to use light instead of mental.

export const FLOOR_ELEM_CYCLE = ["fire", "water", "air", "earth", "light", "dark", "death"];

// ─── Room Types ────────────────────────────────────────────────────────────────
// Room types for spire floors
export type RoomType = 'combat' | 'puzzle' | 'swarm' | 'speed' | 'guardian';

// Room generation rules:
// - Guardian floors (10, 20, 30, etc.) are ALWAYS guardian type
// - Every 5th floor (5, 15, 25, etc.) has a chance for special rooms
// - Other floors are combat with chance for swarm/speed
export const PUZZLE_ROOM_INTERVAL = 7; // Every 7 floors, chance for puzzle
export const SWARM_ROOM_CHANCE = 0.15; // 15% chance for swarm room
export const SPEED_ROOM_CHANCE = 0.10; // 10% chance for speed room
export const PUZZLE_ROOM_CHANCE = 0.20; // 20% chance for puzzle room on puzzle floors

// Puzzle room definitions - themed around attunements
export const PUZZLE_ROOMS: Record<string, {
  name: string;
  attunements: string[];  // Which attunements speed up progress
  baseProgressPerTick: number;  // Base progress rate
  attunementBonus: number;  // Multiplier per relevant attunement level
  description: string;
}> = {
  enchanter_trial: {
    name: "Enchanter's Trial",
    attunements: ['enchanter'],
    baseProgressPerTick: 0.02,
    attunementBonus: 0.03,
    description: "Decipher ancient enchantment runes."
  },
  fabricator_trial: {
    name: "Fabricator's Trial",
    attunements: ['fabricator'],
    baseProgressPerTick: 0.02,
    attunementBonus: 0.03,
    description: "Construct a mana-powered mechanism."
  },
  invoker_trial: {
    name: "Invoker's Trial",
    attunements: ['invoker'],
    baseProgressPerTick: 0.02,
    attunementBonus: 0.03,
    description: "Commune with guardian spirits."
  },
  hybrid_enchanter_fabricator: {
    name: "Fusion Workshop",
    attunements: ['enchanter', 'fabricator'],
    baseProgressPerTick: 0.015,
    attunementBonus: 0.025,
    description: "Enchant and construct in harmony."
  },
  hybrid_enchanter_invoker: {
    name: "Ritual Circle",
    attunements: ['enchanter', 'invoker'],
    baseProgressPerTick: 0.015,
    attunementBonus: 0.025,
    description: "Bind pact energies into enchantments."
  },
  hybrid_fabricator_invoker: {
    name: "Golem Forge",
    attunements: ['fabricator', 'invoker'],
    baseProgressPerTick: 0.015,
    attunementBonus: 0.025,
    description: "Channel guardian power into constructs."
  },
};

// Swarm room configuration
export const SWARM_CONFIG = {
  minEnemies: 3,
  maxEnemies: 6,
  hpMultiplier: 0.4,  // Each enemy has 40% of normal floor HP
  armorBase: 0,       // Swarm enemies start with no armor
  armorPerFloor: 0.01, // Gain 1% armor per 10 floors
};

// Speed room configuration (dodging enemies)
export const SPEED_ROOM_CONFIG = {
  baseDodgeChance: 0.25,  // 25% base dodge chance
  dodgePerFloor: 0.005,   // +0.5% dodge per floor
  maxDodge: 0.50,         // Max 50% dodge
  speedBonus: 0.5,        // 50% less time to complete if dodged
};

// Armor scaling for normal floors
export const FLOOR_ARMOR_CONFIG = {
  baseChance: 0,          // No armor on floor 1-9
  chancePerFloor: 0.01,   // +1% chance per floor after 10
  maxArmorChance: 0.5,    // Max 50% of floors have armor
  minArmor: 0.05,         // Min 5% armor
  maxArmor: 0.25,         // Max 25% armor on non-guardians
};

// ─── Guardians ────────────────────────────────────────────────────────────────
// All guardians have armor - damage reduction percentage
export const GUARDIANS: Record<number, GuardianDef> = {
  10:  { 
    name: "Ignis Prime", element: "fire", hp: 5000, pact: 1.5, color: "#FF6B35",
    armor: 0.10, // 10% damage reduction
    boons: [
      { type: 'elementalDamage', value: 5, desc: '+5% Fire damage' },
      { type: 'maxMana', value: 50, desc: '+50 max mana' },
    ],
    pactCost: 500,
    pactTime: 2,
    uniquePerk: "Fire spells cast 10% faster"
  },
  20:  { 
    name: "Aqua Regia", element: "water", hp: 15000, pact: 1.75, color: "#4ECDC4",
    armor: 0.15,
    boons: [
      { type: 'elementalDamage', value: 5, desc: '+5% Water damage' },
      { type: 'manaRegen', value: 0.5, desc: '+0.5 mana regen' },
    ],
    pactCost: 1000,
    pactTime: 4,
    uniquePerk: "Water spells deal +15% damage"
  },
  30:  { 
    name: "Ventus Rex", element: "air", hp: 30000, pact: 2.0, color: "#00D4FF",
    armor: 0.18,
    boons: [
      { type: 'elementalDamage', value: 5, desc: '+5% Air damage' },
      { type: 'castingSpeed', value: 5, desc: '+5% cast speed' },
    ],
    pactCost: 2000,
    pactTime: 6,
    uniquePerk: "Air spells have 15% crit chance"
  },
  40:  { 
    name: "Terra Firma", element: "earth", hp: 50000, pact: 2.25, color: "#F4A261",
    armor: 0.25, // Earth guardian - highest armor
    boons: [
      { type: 'elementalDamage', value: 5, desc: '+5% Earth damage' },
      { type: 'maxMana', value: 100, desc: '+100 max mana' },
    ],
    pactCost: 4000,
    pactTime: 8,
    uniquePerk: "Earth spells deal +25% damage to guardians"
  },
  50:  { 
    name: "Lux Aeterna", element: "light", hp: 80000, pact: 2.5, color: "#FFD700",
    armor: 0.20,
    boons: [
      { type: 'elementalDamage', value: 10, desc: '+10% Light damage' },
      { type: 'insightGain', value: 10, desc: '+10% insight gain' },
    ],
    pactCost: 8000,
    pactTime: 10,
    uniquePerk: "Light spells reveal enemy weaknesses (+20% damage)"
  },
  60:  { 
    name: "Umbra Mortis", element: "dark", hp: 120000, pact: 2.75, color: "#9B59B6",
    armor: 0.22,
    boons: [
      { type: 'elementalDamage', value: 10, desc: '+10% Dark damage' },
      { type: 'critDamage', value: 15, desc: '+15% crit damage' },
    ],
    pactCost: 15000,
    pactTime: 12,
    uniquePerk: "Dark spells deal +25% damage to armored enemies"
  },
  80:  { 
    name: "Mors Ultima", element: "death", hp: 250000, pact: 3.25, color: "#778CA3",
    armor: 0.25,
    boons: [
      { type: 'elementalDamage', value: 10, desc: '+10% Death damage' },
      { type: 'rawDamage', value: 10, desc: '+10% raw damage' },
    ],
    pactCost: 40000,
    pactTime: 16,
    uniquePerk: "Death spells execute enemies below 20% HP"
  },
  90:  { 
    name: "Primordialis", element: "void", hp: 400000, pact: 4.0, color: "#4A235A",
    armor: 0.30,
    boons: [
      { type: 'elementalDamage', value: 15, desc: '+15% Void damage' },
      { type: 'maxMana', value: 200, desc: '+200 max mana' },
      { type: 'manaRegen', value: 1, desc: '+1 mana regen' },
    ],
    pactCost: 75000,
    pactTime: 20,
    uniquePerk: "Void spells ignore 30% of enemy resistance"
  },
  100: { 
    name: "The Awakened One", element: "stellar", hp: 1000000, pact: 5.0, color: "#F0E68C",
    armor: 0.35, // Final boss has highest armor
    boons: [
      { type: 'elementalDamage', value: 20, desc: '+20% Stellar damage' },
      { type: 'maxMana', value: 500, desc: '+500 max mana' },
      { type: 'manaRegen', value: 2, desc: '+2 mana regen' },
      { type: 'insightGain', value: 25, desc: '+25% insight gain' },
    ],
    pactCost: 150000,
    pactTime: 24,
    uniquePerk: "All spells deal +50% damage and cast 25% faster"
  },
};

// ─── Spells ───────────────────────────────────────────────────────────────────
export const SPELLS_DEF: Record<string, SpellDef> = {
  // Tier 0 - Basic Raw Mana Spells (fast, costs raw mana)
  manaBolt: {
    name: "Mana Bolt",
    elem: "raw",
    dmg: 5,
    cost: rawCost(3),
    tier: 0,
    castSpeed: 3,
    unlock: 0,
    studyTime: 0,
    desc: "A weak bolt of pure mana. Costs raw mana instead of elemental."
  },
  manaStrike: {
    name: "Mana Strike",
    elem: "raw",
    dmg: 8,
    cost: rawCost(5),
    tier: 0,
    castSpeed: 2.5,
    unlock: 50,
    studyTime: 1,
    desc: "A concentrated strike of raw mana. Slightly stronger than Mana Bolt."
  },
  
  // Tier 1 - Basic Elemental Spells (2-4 hours study)
  fireball: {
    name: "Fireball",
    elem: "fire",
    dmg: 15,
    cost: elemCost("fire", 2),
    tier: 1,
    castSpeed: 2,
    unlock: 100,
    studyTime: 2,
    desc: "Hurl a ball of fire at your enemy."
  },
  emberShot: {
    name: "Ember Shot",
    elem: "fire",
    dmg: 10,
    cost: elemCost("fire", 1),
    tier: 1,
    castSpeed: 3,
    unlock: 75,
    studyTime: 1,
    desc: "A quick shot of embers. Efficient fire damage."
  },
  waterJet: {
    name: "Water Jet",
    elem: "water",
    dmg: 12,
    cost: elemCost("water", 2),
    tier: 1,
    castSpeed: 2,
    unlock: 100,
    studyTime: 2,
    desc: "A high-pressure jet of water."
  },
  iceShard: {
    name: "Ice Shard",
    elem: "water",
    dmg: 14,
    cost: elemCost("water", 2),
    tier: 1,
    castSpeed: 2,
    unlock: 120,
    studyTime: 2,
    desc: "Launch a sharp shard of ice."
  },
  gust: {
    name: "Gust",
    elem: "air",
    dmg: 10,
    cost: elemCost("air", 2),
    tier: 1,
    castSpeed: 3,
    unlock: 100,
    studyTime: 2,
    desc: "A powerful gust of wind."
  },
  windSlash: {
    name: "Wind Slash",
    elem: "air",
    dmg: 12,
    cost: elemCost("air", 2),
    tier: 1,
    castSpeed: 2.5,
    unlock: 110,
    studyTime: 2,
    desc: "A cutting blade of wind."
  },
  stoneBullet: {
    name: "Stone Bullet",
    elem: "earth",
    dmg: 16,
    cost: elemCost("earth", 2),
    tier: 1,
    castSpeed: 2,
    unlock: 150,
    studyTime: 3,
    desc: "Launch a bullet of solid stone."
  },
  rockSpike: {
    name: "Rock Spike",
    elem: "earth",
    dmg: 18,
    cost: elemCost("earth", 3),
    tier: 1,
    castSpeed: 1.5,
    unlock: 180,
    studyTime: 3,
    desc: "Summon a spike of rock from below."
  },
  lightLance: {
    name: "Light Lance",
    elem: "light",
    dmg: 18,
    cost: elemCost("light", 2),
    tier: 1,
    castSpeed: 2,
    unlock: 200,
    studyTime: 4,
    desc: "A piercing lance of pure light."
  },
  radiance: {
    name: "Radiance",
    elem: "light",
    dmg: 14,
    cost: elemCost("light", 2),
    tier: 1,
    castSpeed: 2.5,
    unlock: 180,
    studyTime: 3,
    desc: "Burst of radiant energy."
  },
  shadowBolt: {
    name: "Shadow Bolt",
    elem: "dark",
    dmg: 16,
    cost: elemCost("dark", 2),
    tier: 1,
    castSpeed: 2,
    unlock: 200,
    studyTime: 4,
    desc: "A bolt of shadowy energy."
  },
  darkPulse: {
    name: "Dark Pulse",
    elem: "dark",
    dmg: 12,
    cost: elemCost("dark", 1),
    tier: 1,
    castSpeed: 3,
    unlock: 150,
    studyTime: 2,
    desc: "A quick pulse of darkness."
  },
  drain: {
    name: "Drain",
    elem: "death",
    dmg: 10,
    cost: elemCost("death", 2),
    tier: 1,
    castSpeed: 2,
    unlock: 150,
    studyTime: 3,
    desc: "Drain life force from your enemy.",
  },
  rotTouch: {
    name: "Rot Touch",
    elem: "death",
    dmg: 14,
    cost: elemCost("death", 2),
    tier: 1,
    castSpeed: 2,
    unlock: 170,
    studyTime: 3,
    desc: "Touch of decay and rot."
  },

  
  // Tier 2 - Advanced Spells (8-12 hours study)
  inferno: {
    name: "Inferno",
    elem: "fire",
    dmg: 60,
    cost: elemCost("fire", 8),
    tier: 2,
    castSpeed: 1,
    unlock: 1000,
    studyTime: 8,
    desc: "Engulf your enemy in flames."
  },
  flameWave: {
    name: "Flame Wave",
    elem: "fire",
    dmg: 45,
    cost: elemCost("fire", 6),
    tier: 2,
    castSpeed: 1.5,
    unlock: 800,
    studyTime: 6,
    desc: "A wave of fire sweeps across the battlefield."
  },
  tidalWave: {
    name: "Tidal Wave",
    elem: "water",
    dmg: 55,
    cost: elemCost("water", 8),
    tier: 2,
    castSpeed: 1,
    unlock: 1000,
    studyTime: 8,
    desc: "A massive wave crashes down."
  },
  iceStorm: {
    name: "Ice Storm",
    elem: "water",
    dmg: 50,
    cost: elemCost("water", 7),
    tier: 2,
    castSpeed: 1.2,
    unlock: 900,
    studyTime: 7,
    desc: "A storm of ice shards."
  },
  earthquake: {
    name: "Earthquake",
    elem: "earth",
    dmg: 70,
    cost: elemCost("earth", 10),
    tier: 2,
    castSpeed: 0.8,
    unlock: 1200,
    studyTime: 10,
    desc: "Shake the very foundation."
  },
  stoneBarrage: {
    name: "Stone Barrage",
    elem: "earth",
    dmg: 55,
    cost: elemCost("earth", 7),
    tier: 2,
    castSpeed: 1.2,
    unlock: 1000,
    studyTime: 8,
    desc: "Multiple stone projectiles."
  },
  hurricane: {
    name: "Hurricane",
    elem: "air",
    dmg: 50,
    cost: elemCost("air", 8),
    tier: 2,
    castSpeed: 1,
    unlock: 1000,
    studyTime: 8,
    desc: "A devastating hurricane."
  },
  windBlade: {
    name: "Wind Blade",
    elem: "air",
    dmg: 40,
    cost: elemCost("air", 5),
    tier: 2,
    castSpeed: 1.8,
    unlock: 700,
    studyTime: 6,
    desc: "A blade of cutting wind."
  },
  solarFlare: {
    name: "Solar Flare",
    elem: "light",
    dmg: 65,
    cost: elemCost("light", 9),
    tier: 2,
    castSpeed: 0.9,
    unlock: 1100,
    studyTime: 9,
    desc: "A blinding flare of solar energy."
  },
  divineSmite: {
    name: "Divine Smite",
    elem: "light",
    dmg: 55,
    cost: elemCost("light", 7),
    tier: 2,
    castSpeed: 1.2,
    unlock: 900,
    studyTime: 7,
    desc: "A smite of divine power."
  },
  voidRift: {
    name: "Void Rift",
    elem: "dark",
    dmg: 55,
    cost: elemCost("dark", 8),
    tier: 2,
    castSpeed: 1,
    unlock: 1000,
    studyTime: 8,
    desc: "Open a rift to the void."
  },
  shadowStorm: {
    name: "Shadow Storm",
    elem: "dark",
    dmg: 48,
    cost: elemCost("dark", 6),
    tier: 2,
    castSpeed: 1.3,
    unlock: 800,
    studyTime: 6,
    desc: "A storm of shadows."
  },
  soulRend: {
    name: "Soul Rend",
    elem: "death",
    dmg: 50,
    cost: elemCost("death", 7),
    tier: 2,
    castSpeed: 1.1,
    unlock: 1100,
    studyTime: 9,
    desc: "Tear at the enemy's soul."
  },
  
  // Tier 3 - Master Spells (20-30 hours study)
  pyroclasm: {
    name: "Pyroclasm",
    elem: "fire",
    dmg: 250,
    cost: elemCost("fire", 25),
    tier: 3,
    castSpeed: 0.6,
    unlock: 10000,
    studyTime: 24,
    desc: "An eruption of volcanic fury."
  },
  tsunami: {
    name: "Tsunami",
    elem: "water",
    dmg: 220,
    cost: elemCost("water", 22),
    tier: 3,
    castSpeed: 0.65,
    unlock: 10000,
    studyTime: 24,
    desc: "A towering wall of water."
  },
  meteorStrike: {
    name: "Meteor Strike",
    elem: "earth",
    dmg: 280,
    cost: elemCost("earth", 28),
    tier: 3,
    castSpeed: 0.5,
    unlock: 12000,
    studyTime: 28,
    desc: "Call down a meteor from the heavens."
  },
  cosmicStorm: {
    name: "Cosmic Storm",
    elem: "air",
    dmg: 200,
    cost: elemCost("air", 20),
    tier: 3,
    castSpeed: 0.7,
    unlock: 10000,
    studyTime: 24,
    desc: "A storm of cosmic proportions."
  },
  heavenLight: {
    name: "Heaven's Light",
    elem: "light",
    dmg: 240,
    cost: elemCost("light", 24),
    tier: 3,
    castSpeed: 0.6,
    unlock: 11000,
    studyTime: 26,
    desc: "The light of heaven itself."
  },
  oblivion: {
    name: "Oblivion",
    elem: "dark",
    dmg: 230,
    cost: elemCost("dark", 23),
    tier: 3,
    castSpeed: 0.6,
    unlock: 10500,
    studyTime: 25,
    desc: "Consign to oblivion."
  },
  deathMark: {
    name: "Death Mark",
    elem: "death",
    dmg: 200,
    cost: elemCost("death", 20),
    tier: 3,
    castSpeed: 0.7,
    unlock: 10000,
    studyTime: 24,
    desc: "Mark for death."
  },
  
  // Tier 4 - Legendary Spells (40-60 hours study, require exotic elements)
  stellarNova: {
    name: "Stellar Nova",
    elem: "stellar",
    dmg: 500,
    cost: elemCost("stellar", 15),
    tier: 4,
    castSpeed: 0.4,
    unlock: 50000,
    studyTime: 48,
    desc: "A nova of stellar energy."
  },
  voidCollapse: {
    name: "Void Collapse",
    elem: "void",
    dmg: 450,
    cost: elemCost("void", 12),
    tier: 4,
    castSpeed: 0.45,
    unlock: 40000,
    studyTime: 42,
    desc: "Collapse the void upon your enemy."
  },
  crystalShatter: {
    name: "Crystal Shatter",
    elem: "crystal",
    dmg: 400,
    cost: elemCost("crystal", 10),
    tier: 4,
    castSpeed: 0.5,
    unlock: 35000,
    studyTime: 36,
    desc: "Shatter crystalline energy."
  },
  
  // ═══════════════════════════════════════════════════════════════════════════
  // LIGHTNING SPELLS - Fast, armor-piercing, harder to dodge
  // ═══════════════════════════════════════════════════════════════════════════
  
  // Tier 1 - Basic Lightning
  spark: {
    name: "Spark",
    elem: "lightning",
    dmg: 8,
    cost: elemCost("lightning", 1),
    tier: 1,
    castSpeed: 4,
    unlock: 120,
    studyTime: 2,
    desc: "A quick spark of lightning. Very fast and hard to dodge.",
    effects: [{ type: 'armor_pierce', value: 0.2 }]
  },
  lightningBolt: {
    name: "Lightning Bolt",
    elem: "lightning",
    dmg: 14,
    cost: elemCost("lightning", 2),
    tier: 1,
    castSpeed: 3,
    unlock: 150,
    studyTime: 3,
    desc: "A bolt of lightning that pierces armor.",
    effects: [{ type: 'armor_pierce', value: 0.3 }]
  },
  
  // Tier 2 - Advanced Lightning
  chainLightning: {
    name: "Chain Lightning",
    elem: "lightning",
    dmg: 25,
    cost: elemCost("lightning", 5),
    tier: 2,
    castSpeed: 2,
    unlock: 900,
    studyTime: 8,
    desc: "Lightning that arcs between enemies. Hits 3 targets.",
    isAoe: true,
    aoeTargets: 3,
    effects: [{ type: 'chain', value: 3 }]
  },
  stormCall: {
    name: "Storm Call",
    elem: "lightning",
    dmg: 40,
    cost: elemCost("lightning", 6),
    tier: 2,
    castSpeed: 1.5,
    unlock: 1100,
    studyTime: 10,
    desc: "Call down a storm. Hits 2 targets with armor pierce.",
    isAoe: true,
    aoeTargets: 2,
    effects: [{ type: 'armor_pierce', value: 0.4 }]
  },
  
  // Tier 3 - Master Lightning
  thunderStrike: {
    name: "Thunder Strike",
    elem: "lightning",
    dmg: 150,
    cost: elemCost("lightning", 15),
    tier: 3,
    castSpeed: 0.8,
    unlock: 10000,
    studyTime: 24,
    desc: "Devastating lightning that ignores 50% armor.",
    effects: [{ type: 'armor_pierce', value: 0.5 }]
  },
  
  // ═══════════════════════════════════════════════════════════════════════════
  // AOE SPELLS - Hit multiple enemies, less damage per target
  // ═══════════════════════════════════════════════════════════════════════════
  
  // Tier 1 AOE
  fireballAoe: {
    name: "Fireball (AOE)",
    elem: "fire",
    dmg: 8,
    cost: elemCost("fire", 3),
    tier: 1,
    castSpeed: 2,
    unlock: 150,
    studyTime: 3,
    desc: "An explosive fireball that hits 3 enemies.",
    isAoe: true,
    aoeTargets: 3,
    effects: [{ type: 'aoe', value: 3 }]
  },
  frostNova: {
    name: "Frost Nova",
    elem: "water",
    dmg: 6,
    cost: elemCost("water", 3),
    tier: 1,
    castSpeed: 2,
    unlock: 140,
    studyTime: 3,
    desc: "A burst of frost hitting 4 enemies. May freeze.",
    isAoe: true,
    aoeTargets: 4,
    effects: [{ type: 'freeze', value: 0.15, chance: 0.2 }]
  },
  
  // Tier 2 AOE
  meteorShower: {
    name: "Meteor Shower",
    elem: "fire",
    dmg: 20,
    cost: elemCost("fire", 8),
    tier: 2,
    castSpeed: 1,
    unlock: 1200,
    studyTime: 10,
    desc: "Rain meteors on 5 enemies.",
    isAoe: true,
    aoeTargets: 5
  },
  blizzard: {
    name: "Blizzard",
    elem: "water",
    dmg: 18,
    cost: elemCost("water", 7),
    tier: 2,
    castSpeed: 1.2,
    unlock: 1000,
    studyTime: 9,
    desc: "A freezing blizzard hitting 4 enemies.",
    isAoe: true,
    aoeTargets: 4,
    effects: [{ type: 'freeze', value: 0.1, chance: 0.15 }]
  },
  earthquakeAoe: {
    name: "Earth Tremor",
    elem: "earth",
    dmg: 25,
    cost: elemCost("earth", 8),
    tier: 2,
    castSpeed: 0.8,
    unlock: 1400,
    studyTime: 10,
    desc: "Shake the ground, hitting 3 enemies with high damage.",
    isAoe: true,
    aoeTargets: 3
  },
  
  // Tier 3 AOE
  apocalypse: {
    name: "Apocalypse",
    elem: "fire",
    dmg: 80,
    cost: elemCost("fire", 20),
    tier: 3,
    castSpeed: 0.5,
    unlock: 15000,
    studyTime: 30,
    desc: "End times. Hits ALL enemies with devastating fire.",
    isAoe: true,
    aoeTargets: 10
  },
  
  // ═══════════════════════════════════════════════════════════════════════════
  // MAGIC SWORD ENCHANTMENTS - For weapon enchanting system
  // ═══════════════════════════════════════════════════════════════════════════
  
  fireBlade: {
    name: "Fire Blade",
    elem: "fire",
    dmg: 3,
    cost: rawCost(1),
    tier: 1,
    castSpeed: 4,
    unlock: 100,
    studyTime: 2,
    desc: "Enchant a blade with fire. Burns enemies over time.",
    isWeaponEnchant: true,
    effects: [{ type: 'burn', value: 2, duration: 3 }]
  },
  frostBlade: {
    name: "Frost Blade",
    elem: "water",
    dmg: 3,
    cost: rawCost(1),
    tier: 1,
    castSpeed: 4,
    unlock: 100,
    studyTime: 2,
    desc: "Enchant a blade with frost. Prevents enemy dodge.",
    isWeaponEnchant: true,
    effects: [{ type: 'freeze', value: 0, chance: 1 }] // 100% freeze = no dodge
  },
  lightningBlade: {
    name: "Lightning Blade",
    elem: "lightning",
    dmg: 4,
    cost: rawCost(1),
    tier: 1,
    castSpeed: 5,
    unlock: 150,
    studyTime: 3,
    desc: "Enchant a blade with lightning. Pierces 30% armor.",
    isWeaponEnchant: true,
    effects: [{ type: 'armor_pierce', value: 0.3 }]
  },
  voidBlade: {
    name: "Void Blade",
    elem: "dark",
    dmg: 5,
    cost: rawCost(2),
    tier: 2,
    castSpeed: 3,
    unlock: 800,
    studyTime: 8,
    desc: "Enchant a blade with void. +20% damage.",
    isWeaponEnchant: true,
    effects: [{ type: 'buff', value: 0.2 }]
  },
  
  // ═══════════════════════════════════════════════════════════════════════════
  // COMPOUND MANA SPELLS - Blood, Metal, Wood, Sand
  // ═══════════════════════════════════════════════════════════════════════════
  
  // ─── METAL SPELLS (Fire + Earth) ─────────────────────────────────────────────
  // Metal magic is slow but devastating with high armor pierce
  metalShard: {
    name: "Metal Shard",
    elem: "metal",
    dmg: 16,
    cost: elemCost("metal", 2),
    tier: 1,
    castSpeed: 1.8,
    unlock: 220,
    studyTime: 3,
    desc: "A sharpened metal shard. Slower but pierces armor.",
    effects: [{ type: 'armor_pierce', value: 0.25 }]
  },
  ironFist: {
    name: "Iron Fist",
    elem: "metal",
    dmg: 28,
    cost: elemCost("metal", 4),
    tier: 1,
    castSpeed: 1.5,
    unlock: 350,
    studyTime: 5,
    desc: "A crushing fist of iron. High armor pierce.",
    effects: [{ type: 'armor_pierce', value: 0.35 }]
  },
  steelTempest: {
    name: "Steel Tempest",
    elem: "metal",
    dmg: 55,
    cost: elemCost("metal", 8),
    tier: 2,
    castSpeed: 1,
    unlock: 1300,
    studyTime: 12,
    desc: "A whirlwind of steel blades. Ignores much armor.",
    effects: [{ type: 'armor_pierce', value: 0.45 }]
  },
  furnaceBlast: {
    name: "Furnace Blast",
    elem: "metal",
    dmg: 200,
    cost: elemCost("metal", 20),
    tier: 3,
    castSpeed: 0.5,
    unlock: 18000,
    studyTime: 32,
    desc: "Molten metal and fire combined. Devastating armor pierce.",
    effects: [{ type: 'armor_pierce', value: 0.6 }]
  },
  
  // ─── SAND SPELLS (Earth + Water) ────────────────────────────────────────────
  // Sand magic slows enemies and deals steady damage
  sandBlast: {
    name: "Sand Blast",
    elem: "sand",
    dmg: 11,
    cost: elemCost("sand", 2),
    tier: 1,
    castSpeed: 3,
    unlock: 190,
    studyTime: 3,
    desc: "A blast of stinging sand. Fast casting.",
  },
  sandstorm: {
    name: "Sandstorm",
    elem: "sand",
    dmg: 22,
    cost: elemCost("sand", 4),
    tier: 1,
    castSpeed: 2,
    unlock: 300,
    studyTime: 4,
    desc: "A swirling sandstorm. Hits 2 enemies.",
    isAoe: true,
    aoeTargets: 2,
  },
  desertWind: {
    name: "Desert Wind",
    elem: "sand",
    dmg: 38,
    cost: elemCost("sand", 6),
    tier: 2,
    castSpeed: 1.5,
    unlock: 950,
    studyTime: 8,
    desc: "A scouring desert wind. Hits 3 enemies.",
    isAoe: true,
    aoeTargets: 3,
  },
  duneCollapse: {
    name: "Dune Collapse",
    elem: "sand",
    dmg: 100,
    cost: elemCost("sand", 16),
    tier: 3,
    castSpeed: 0.6,
    unlock: 14000,
    studyTime: 28,
    desc: "Dunes collapse on all enemies. Hits 5 targets.",
    isAoe: true,
    aoeTargets: 5,
  },
  
  // ═══════════════════════════════════════════════════════════════════════════
  // UTILITY MANA SPELLS - Mental, Transference, Force
  // ═══════════════════════════════════════════════════════════════════════════
  
  // ─── TRANSFERENCE SPELLS ─────────────────────────────────────────────────────
  // Transference magic moves mana and enhances efficiency
  transferStrike: {
    name: "Transfer Strike",
    elem: "transference",
    dmg: 9,
    cost: elemCost("transference", 2),
    tier: 1,
    castSpeed: 3,
    unlock: 150,
    studyTime: 2,
    desc: "Strike that transfers energy. Very efficient.",
  },
  manaRip: {
    name: "Mana Rip",
    elem: "transference",
    dmg: 16,
    cost: elemCost("transference", 3),
    tier: 1,
    castSpeed: 2.5,
    unlock: 250,
    studyTime: 4,
    desc: "Rip mana from the enemy. High efficiency.",
  },
  essenceDrain: {
    name: "Essence Drain",
    elem: "transference",
    dmg: 42,
    cost: elemCost("transference", 7),
    tier: 2,
    castSpeed: 1.3,
    unlock: 1050,
    studyTime: 10,
    desc: "Drain the enemy's essence.",
  },
  soulTransfer: {
    name: "Soul Transfer",
    elem: "transference",
    dmg: 130,
    cost: elemCost("transference", 16),
    tier: 3,
    castSpeed: 0.6,
    unlock: 13000,
    studyTime: 26,
    desc: "Transfer the soul's energy.",
  },
};

// ─── Skills ───────────────────────────────────────────────────────────────────
export const SKILLS_DEF: Record<string, SkillDef> = {
  // Mana Skills (4-8 hours study) - Core, no attunement required
  manaWell:      { name: "Mana Well",      desc: "+100 max mana",         cat: "mana",   max: 10, base: 100, studyTime: 4 },
  manaFlow:      { name: "Mana Flow",      desc: "+1 regen/hr",           cat: "mana",   max: 10, base: 150, studyTime: 5 },
  elemAttune:    { name: "Elem. Attunement", desc: "+50 elem mana cap",   cat: "mana",   max: 10, base: 200, studyTime: 4 },
  manaOverflow:  { name: "Mana Overflow",  desc: "+25% mana from clicks", cat: "mana",   max: 5,  base: 400, req: { manaWell: 3 }, studyTime: 6 },

  // Study Skills (3-6 hours study) - Core, no attunement required
  quickLearner:  { name: "Quick Learner",   desc: "+10% study speed",     cat: "study",  max: 10, base: 250, studyTime: 4 },
  focusedMind:   { name: "Focused Mind",    desc: "-5% study mana cost",  cat: "study",  max: 10, base: 300, studyTime: 5 },
  meditation:    { name: "Meditation Focus", desc: "Up to 2.5x regen after 4hrs meditating", cat: "study", max: 1, base: 400, studyTime: 6 },
  knowledgeRetention: { name: "Knowledge Retention", desc: "+20% study progress saved on cancel", cat: "study", max: 3, base: 350, studyTime: 5 },

  // Enchanting Skills (4-8 hours study) - Requires Enchanter attunement levels
  enchanting:       { name: "Enchanting",       desc: "Unlocks enchantment design", cat: "enchant", max: 10, base: 200, studyTime: 5, attunement: 'enchanter', attunementReq: { enchanter: 1 } },
  efficientEnchant:{ name: "Efficient Enchant", desc: "-5% enchantment capacity cost", cat: "enchant", max: 5, base: 350, studyTime: 6, req: { enchanting: 3 }, attunementReq: { enchanter: 2 } },
  disenchanting:    { name: "Disenchanting",    desc: "Recover 20% mana from removed enchantments", cat: "enchant", max: 3, base: 400, studyTime: 6, req: { enchanting: 2 }, attunementReq: { enchanter: 1 } },
  enchantSpeed:     { name: "Enchant Speed",    desc: "-10% enchantment time", cat: "enchant", max: 5, base: 300, studyTime: 4, req: { enchanting: 2 }, attunementReq: { enchanter: 1 } },
  scrollCrafting:   { name: "Scroll Crafting",  desc: "Create scrolls to store enchantment designs", cat: "enchant", max: 3, base: 500, studyTime: 8, req: { enchanting: 5 }, attunementReq: { enchanter: 3 } },
  essenceRefining:  { name: "Essence Refining", desc: "+10% enchantment effect power", cat: "enchant", max: 5, base: 450, studyTime: 7, req: { enchanting: 4 }, attunementReq: { enchanter: 2 } },

  // Crafting Skills (4-6 hours study) - Some require Fabricator
  effCrafting:   { name: "Eff. Crafting",   desc: "-10% craft time",      cat: "craft",  max: 5,  base: 300, studyTime: 4 },
  fieldRepair:   { name: "Field Repair",    desc: "+15% repair efficiency", cat: "craft", max: 5, base: 350, studyTime: 4 },
  elemCrafting:  { name: "Elem. Crafting",  desc: "+25% craft output",    cat: "craft",  max: 3, base: 500, req: { effCrafting: 3 }, studyTime: 8, attunementReq: { enchanter: 1 } },

  // Effect Research Skills (unlock enchantment effects for designing) - Requires Enchanter
  // Tier 1 - Basic Spell Effects
  researchManaSpells: { name: "Mana Spell Research", desc: "Unlock Mana Strike spell enchantment", cat: "effectResearch", max: 1, base: 200, studyTime: 4, req: { enchanting: 1 }, attunementReq: { enchanter: 1 } },
  researchFireSpells: { name: "Fire Spell Research", desc: "Unlock Ember Shot, Fireball spell enchantments", cat: "effectResearch", max: 1, base: 300, studyTime: 6, req: { enchanting: 2 }, attunementReq: { enchanter: 1 } },
  researchWaterSpells: { name: "Water Spell Research", desc: "Unlock Water Jet, Ice Shard spell enchantments", cat: "effectResearch", max: 1, base: 300, studyTime: 6, req: { enchanting: 2 }, attunementReq: { enchanter: 1 } },
  researchAirSpells: { name: "Air Spell Research", desc: "Unlock Gust, Wind Slash spell enchantments", cat: "effectResearch", max: 1, base: 300, studyTime: 6, req: { enchanting: 2 }, attunementReq: { enchanter: 1 } },
  researchEarthSpells: { name: "Earth Spell Research", desc: "Unlock Stone Bullet, Rock Spike spell enchantments", cat: "effectResearch", max: 1, base: 350, studyTime: 6, req: { enchanting: 2 }, attunementReq: { enchanter: 1 } },
  researchLightSpells: { name: "Light Spell Research", desc: "Unlock Light Lance, Radiance spell enchantments", cat: "effectResearch", max: 1, base: 400, studyTime: 8, req: { enchanting: 3 }, attunementReq: { enchanter: 2 } },
  researchDarkSpells: { name: "Dark Spell Research", desc: "Unlock Shadow Bolt, Dark Pulse spell enchantments", cat: "effectResearch", max: 1, base: 400, studyTime: 8, req: { enchanting: 3 }, attunementReq: { enchanter: 2 } },
  researchLifeDeathSpells: { name: "Death Research", desc: "Unlock Drain spell enchantment", cat: "effectResearch", max: 1, base: 400, studyTime: 8, req: { enchanting: 3 }, attunementReq: { enchanter: 2 } },
  
  // Tier 2 - Advanced Spell Effects - Require Enchanter 3
  researchAdvancedFire: { name: "Advanced Fire Research", desc: "Unlock Inferno, Flame Wave spell enchantments", cat: "effectResearch", max: 1, base: 600, studyTime: 12, req: { researchFireSpells: 1, enchanting: 4 }, attunementReq: { enchanter: 3 } },
  researchAdvancedWater: { name: "Advanced Water Research", desc: "Unlock Tidal Wave, Ice Storm spell enchantments", cat: "effectResearch", max: 1, base: 600, studyTime: 12, req: { researchWaterSpells: 1, enchanting: 4 }, attunementReq: { enchanter: 3 } },
  researchAdvancedAir: { name: "Advanced Air Research", desc: "Unlock Hurricane, Wind Blade spell enchantments", cat: "effectResearch", max: 1, base: 600, studyTime: 12, req: { researchAirSpells: 1, enchanting: 4 }, attunementReq: { enchanter: 3 } },
  researchAdvancedEarth: { name: "Advanced Earth Research", desc: "Unlock Earthquake, Stone Barrage spell enchantments", cat: "effectResearch", max: 1, base: 600, studyTime: 12, req: { researchEarthSpells: 1, enchanting: 4 }, attunementReq: { enchanter: 3 } },
  researchAdvancedLight: { name: "Advanced Light Research", desc: "Unlock Solar Flare, Divine Smite spell enchantments", cat: "effectResearch", max: 1, base: 700, studyTime: 14, req: { researchLightSpells: 1, enchanting: 5 }, attunementReq: { enchanter: 4 } },
  researchAdvancedDark: { name: "Advanced Dark Research", desc: "Unlock Void Rift, Shadow Storm spell enchantments", cat: "effectResearch", max: 1, base: 700, studyTime: 14, req: { researchDarkSpells: 1, enchanting: 5 }, attunementReq: { enchanter: 4 } },
  
  // Tier 3 - Master Spell Effects - Require Enchanter 5
  researchMasterFire: { name: "Master Fire Research", desc: "Unlock Pyroclasm spell enchantment", cat: "effectResearch", max: 1, base: 1200, studyTime: 24, req: { researchAdvancedFire: 1, enchanting: 7 }, attunementReq: { enchanter: 5 } },
  researchMasterWater: { name: "Master Water Research", desc: "Unlock Tsunami spell enchantment", cat: "effectResearch", max: 1, base: 1200, studyTime: 24, req: { researchAdvancedWater: 1, enchanting: 7 }, attunementReq: { enchanter: 5 } },
  researchMasterEarth: { name: "Master Earth Research", desc: "Unlock Meteor Strike spell enchantment", cat: "effectResearch", max: 1, base: 1300, studyTime: 26, req: { researchAdvancedEarth: 1, enchanting: 8 }, attunementReq: { enchanter: 5 } },
  
  // Combat Effect Research
  researchDamageEffects: { name: "Damage Effect Research", desc: "Unlock Minor/Moderate Power, Amplification effects", cat: "effectResearch", max: 1, base: 250, studyTime: 5, req: { enchanting: 1 }, attunementReq: { enchanter: 1 } },
  researchCombatEffects: { name: "Combat Effect Research", desc: "Unlock Sharp Edge, Swift Casting effects", cat: "effectResearch", max: 1, base: 350, studyTime: 6, req: { researchDamageEffects: 1, enchanting: 3 }, attunementReq: { enchanter: 2 } },
  
  // Mana Effect Research - Also unlocks weapon mana effects at Enchanter 3
  researchManaEffects: { name: "Mana Effect Research", desc: "Unlock Mana Reserve, Trickle, Mana Tap, and weapon mana effects", cat: "effectResearch", max: 1, base: 200, studyTime: 4, req: { enchanting: 1 }, attunementReq: { enchanter: 1 } },
  researchAdvancedManaEffects: { name: "Advanced Mana Research", desc: "Unlock Mana Reservoir, Stream, River, Mana Surge, and advanced weapon mana effects", cat: "effectResearch", max: 1, base: 400, studyTime: 8, req: { researchManaEffects: 1, enchanting: 3 }, attunementReq: { enchanter: 3 } },
  
  // Utility Effect Research
  researchUtilityEffects: { name: "Utility Effect Research", desc: "Unlock Meditative Focus, Quick Study, Insightful effects", cat: "effectResearch", max: 1, base: 300, studyTime: 6, req: { enchanting: 2 }, attunementReq: { enchanter: 1 } },
  
  // Special Effect Research
  researchSpecialEffects: { name: "Special Effect Research", desc: "Unlock Echo Chamber, Siphoning, Bane effects", cat: "effectResearch", max: 1, base: 500, studyTime: 10, req: { enchanting: 4 }, attunementReq: { enchanter: 3 } },
  researchOverpower: { name: "Overpower Research", desc: "Unlock Overpower effect", cat: "effectResearch", max: 1, base: 700, studyTime: 12, req: { researchSpecialEffects: 1, enchanting: 5 }, attunementReq: { enchanter: 4 } },
  
  // ═══════════════════════════════════════════════════════════════════════════
  // COMPOUND MANA SPELL RESEARCH - Metal, Sand, Lightning
  // ═══════════════════════════════════════════════════════════════════════════
  
  // Tier 1 - Basic Compound Spells
  researchMetalSpells: { name: "Metal Spell Research", desc: "Unlock Metal Shard, Iron Fist spell enchantments", cat: "effectResearch", max: 1, base: 400, studyTime: 6, req: { researchFireSpells: 1, researchEarthSpells: 1, enchanting: 3 }, attunementReq: { enchanter: 2 } },
  researchSandSpells: { name: "Sand Spell Research", desc: "Unlock Sand Blast, Sandstorm spell enchantments", cat: "effectResearch", max: 1, base: 400, studyTime: 6, req: { researchEarthSpells: 1, researchWaterSpells: 1, enchanting: 3 }, attunementReq: { enchanter: 2 } },
  researchLightningSpells: { name: "Lightning Spell Research", desc: "Unlock Spark, Lightning Bolt spell enchantments", cat: "effectResearch", max: 1, base: 400, studyTime: 6, req: { researchFireSpells: 1, researchAirSpells: 1, enchanting: 3 }, attunementReq: { enchanter: 2 } },
  
  // Tier 2 - Advanced Compound Spells
  researchAdvancedMetal: { name: "Advanced Metal Research", desc: "Unlock Steel Tempest spell enchantment", cat: "effectResearch", max: 1, base: 700, studyTime: 12, req: { researchMetalSpells: 1, enchanting: 5 }, attunementReq: { enchanter: 3 } },
  researchAdvancedSand: { name: "Advanced Sand Research", desc: "Unlock Desert Wind spell enchantment", cat: "effectResearch", max: 1, base: 700, studyTime: 12, req: { researchSandSpells: 1, enchanting: 5 }, attunementReq: { enchanter: 3 } },
  researchAdvancedLightning: { name: "Advanced Lightning Research", desc: "Unlock Chain Lightning, Storm Call spell enchantments", cat: "effectResearch", max: 1, base: 700, studyTime: 12, req: { researchLightningSpells: 1, enchanting: 5 }, attunementReq: { enchanter: 3 } },
  
  // Tier 3 - Master Compound Spells
  researchMasterMetal: { name: "Master Metal Research", desc: "Unlock Furnace Blast spell enchantment", cat: "effectResearch", max: 1, base: 1300, studyTime: 26, req: { researchAdvancedMetal: 1, enchanting: 7 }, attunementReq: { enchanter: 5 } },
  researchMasterSand: { name: "Master Sand Research", desc: "Unlock Dune Collapse spell enchantment", cat: "effectResearch", max: 1, base: 1300, studyTime: 26, req: { researchAdvancedSand: 1, enchanting: 7 }, attunementReq: { enchanter: 5 } },
  researchMasterLightning: { name: "Master Lightning Research", desc: "Unlock Thunder Strike spell enchantment", cat: "effectResearch", max: 1, base: 1300, studyTime: 26, req: { researchAdvancedLightning: 1, enchanting: 7 }, attunementReq: { enchanter: 5 } },
  
  // ═══════════════════════════════════════════════════════════════════════════
  // UTILITY MANA SPELL RESEARCH - Transference
  // ═══════════════════════════════════════════════════════════════════════════
  
  // Tier 1 - Basic Utility Spells
  researchTransferenceSpells: { name: "Transference Spell Research", desc: "Unlock Transfer Strike, Mana Rip spell enchantments", cat: "effectResearch", max: 1, base: 350, studyTime: 5, req: { enchanting: 3 }, attunementReq: { enchanter: 1 } },
  
  // Tier 2 - Advanced Utility Spells
  researchAdvancedTransference: { name: "Advanced Transference Research", desc: "Unlock Essence Drain spell enchantment", cat: "effectResearch", max: 1, base: 650, studyTime: 12, req: { researchTransferenceSpells: 1, enchanting: 5 }, attunementReq: { enchanter: 3 } },
  
  // Tier 3 - Master Utility Spells
  researchMasterTransference: { name: "Master Transference Research", desc: "Unlock Soul Transfer spell enchantment", cat: "effectResearch", max: 1, base: 1300, studyTime: 26, req: { researchAdvancedTransference: 1, enchanting: 7 }, attunementReq: { enchanter: 5 } },

  // Research Skills (longer study times: 12-72 hours) - Core skills, any attunement level 3
  manaTap:       { name: "Mana Tap",        desc: "+1 mana/click",        cat: "research", max: 1, base: 300, studyTime: 12 },
  manaSurge:     { name: "Mana Surge",      desc: "+3 mana/click",        cat: "research", max: 1, base: 800, studyTime: 36, req: { manaTap: 1 } },
  manaSpring:    { name: "Mana Spring",     desc: "+2 mana regen",        cat: "research", max: 1, base: 600, studyTime: 24 },
  deepTrance:    { name: "Deep Trance",     desc: "Extend meditation bonus to 6hrs for 3x", cat: "research", max: 1, base: 900, studyTime: 48, req: { meditation: 1 } },
  voidMeditation:{ name: "Void Meditation", desc: "Extend meditation bonus to 8hrs for 5x", cat: "research", max: 1, base: 1500, studyTime: 72, req: { deepTrance: 1 } },

  // Ascension Skills (very long study, powerful effects) - Require any attunement level 5+
  insightHarvest: { name: "Insight Harvest", desc: "+10% insight gain",   cat: "ascension", max: 5, base: 1000, studyTime: 20, attunementReq: { enchanter: 1 } },
  temporalMemory: { name: "Temporal Memory", desc: "Keep 1 spell learned across loops", cat: "ascension", max: 3, base: 2000, studyTime: 36, attunementReq: { enchanter: 3 } },
  guardianBane:  { name: "Guardian Bane",   desc: "+20% dmg vs guardians", cat: "ascension", max: 3, base: 1500, studyTime: 30, attunementReq: { invoker: 1 } },
};

// ─── Prestige Upgrades ────────────────────────────────────────────────────────
export const PRESTIGE_DEF: Record<string, PrestigeDef> = {
  manaWell:     { name: "Mana Well",     desc: "+500 starting max mana",     max: 5,  cost: 500 },
  manaFlow:     { name: "Mana Flow",     desc: "+0.5 regen/sec permanently", max: 10, cost: 750 },
  deepMemory:   { name: "Deep Memory",   desc: "+1 memory slot",             max: 5,  cost: 1000 },
  insightAmp:   { name: "Insight Amp",   desc: "+25% insight gain",          max: 4,  cost: 1500 },
  spireKey:     { name: "Spire Key",     desc: "Start at floor +2",          max: 5,  cost: 4000 },
  temporalEcho: { name: "Temporal Echo", desc: "+10% mana generation",       max: 5,  cost: 3000 },
  steadyHand:   { name: "Steady Hand",   desc: "-15% durability loss",       max: 5,  cost: 1200 },
  ancientKnowledge: { name: "Ancient Knowledge", desc: "Start with blueprint discovered", max: 5, cost: 2000 },
  elementalAttune: { name: "Elemental Attunement", desc: "+25 elemental mana cap", max: 10, cost: 600 },
  spellMemory:  { name: "Spell Memory",  desc: "Start with random spell learned", max: 3, cost: 2500 },
  guardianPact: { name: "Guardian Pact", desc: "+10% pact multiplier",       max: 5,  cost: 3500 },
  quickStart:   { name: "Quick Start",   desc: "Start with 100 raw mana",    max: 3,  cost: 400 },
  elemStart:    { name: "Elem. Start",   desc: "Start with 5 of each unlocked element", max: 3, cost: 800 },
};

// ─── Skill Categories ─────────────────────────────────────────────────────────
// Skills are now organized by attunement - each attunement grants access to specific skill categories
export const SKILL_CATEGORIES = [
  // Core categories (always available)
  { id: 'mana', name: 'Mana', icon: '💧', attunement: null },
  { id: 'study', name: 'Study', icon: '📚', attunement: null },
  { id: 'research', name: 'Research', icon: '🔮', attunement: null },
  { id: 'ascension', name: 'Ascension', icon: '⭐', attunement: null },
  
  // Enchanter attunement (Right Hand)
  { id: 'enchant', name: 'Enchanting', icon: '✨', attunement: 'enchanter' },
  { id: 'effectResearch', name: 'Effect Research', icon: '🔬', attunement: 'enchanter' },
  
  // Invoker attunement (Chest)
  { id: 'invocation', name: 'Invocation', icon: '💜', attunement: 'invoker' },
  { id: 'pact', name: 'Pact Mastery', icon: '🤝', attunement: 'invoker' },
  
  // Fabricator attunement (Left Hand)
  { id: 'fabrication', name: 'Fabrication', icon: '⚒️', attunement: 'fabricator' },
  { id: 'golemancy', name: 'Golemancy', icon: '🗿', attunement: 'fabricator' },
  
  // Legacy category (for backward compatibility)
  { id: 'craft', name: 'Crafting', icon: '🔧', attunement: null },
];

// ─── Rarity Colors ───────────────────────────────────────────────────────────
export const RARITY_COLORS: Record<string, string> = {
  common: '#9CA3AF',
  uncommon: '#22C55E',
  rare: '#3B82F6',
  epic: '#A855F7',
  legendary: '#F97316',
  mythic: '#EF4444',
};

// ─── Effect Research Mapping ───────────────────────────────────────────────────
// Maps research skill IDs to the effect IDs they unlock
export const EFFECT_RESEARCH_MAPPING: Record<string, string[]> = {
  // Tier 1 - Basic Spell Effects
  researchManaSpells: ['spell_manaStrike'],
  researchFireSpells: ['spell_emberShot', 'spell_fireball'],
  researchWaterSpells: ['spell_waterJet', 'spell_iceShard'],
  researchAirSpells: ['spell_gust', 'spell_windSlash'],
  researchEarthSpells: ['spell_stoneBullet', 'spell_rockSpike'],
  researchLightSpells: ['spell_lightLance', 'spell_radiance'],
  researchDarkSpells: ['spell_shadowBolt', 'spell_darkPulse'],
  researchLifeDeathSpells: ['spell_drain'],
  
  // Tier 2 - Advanced Spell Effects
  researchAdvancedFire: ['spell_inferno', 'spell_flameWave'],
  researchAdvancedWater: ['spell_tidalWave', 'spell_iceStorm'],
  researchAdvancedAir: ['spell_hurricane', 'spell_windBlade'],
  researchAdvancedEarth: ['spell_earthquake', 'spell_stoneBarrage'],
  researchAdvancedLight: ['spell_solarFlare', 'spell_divineSmite'],
  researchAdvancedDark: ['spell_voidRift', 'spell_shadowStorm'],
  
  // Tier 3 - Master Spell Effects
  researchMasterFire: ['spell_pyroclasm'],
  researchMasterWater: ['spell_tsunami'],
  researchMasterEarth: ['spell_meteorStrike'],
  
  // Combat Effect Research
  researchDamageEffects: ['damage_5', 'damage_10', 'damage_pct_10'],
  researchCombatEffects: ['crit_5', 'attack_speed_10'],
  
  // Mana Effect Research
  researchManaEffects: ['mana_cap_50', 'mana_regen_1', 'click_mana_1'],
  researchAdvancedManaEffects: ['mana_cap_100', 'mana_regen_2', 'mana_regen_5', 'click_mana_3'],
  
  // Utility Effect Research
  researchUtilityEffects: ['meditate_10', 'study_10', 'insight_5'],
  
  // Special Effect Research
  researchSpecialEffects: ['spell_echo_10', 'guardian_dmg_10'],
  researchOverpower: ['overpower_80'],
  
  // ═══════════════════════════════════════════════════════════════════════════
  // COMPOUND MANA SPELL RESEARCH - Metal, Sand, Lightning
  // ═══════════════════════════════════════════════════════════════════════════
  
  // Tier 1 - Basic Compound Spells
  researchMetalSpells: ['spell_metalShard', 'spell_ironFist'],
  researchSandSpells: ['spell_sandBlast', 'spell_sandstorm'],
  researchLightningSpells: ['spell_spark', 'spell_lightningBolt'],
  
  // Tier 2 - Advanced Compound Spells
  researchAdvancedMetal: ['spell_steelTempest'],
  researchAdvancedSand: ['spell_desertWind'],
  researchAdvancedLightning: ['spell_chainLightning', 'spell_stormCall'],
  
  // Tier 3 - Master Compound Spells
  researchMasterMetal: ['spell_furnaceBlast'],
  researchMasterSand: ['spell_duneCollapse'],
  researchMasterLightning: ['spell_thunderStrike'],
  
  // ═══════════════════════════════════════════════════════════════════════════
  // UTILITY MANA SPELL RESEARCH - Transference
  // ═══════════════════════════════════════════════════════════════════════════
  
  // Tier 1 - Basic Utility Spells
  researchTransferenceSpells: ['spell_transferStrike', 'spell_manaRip'],
  
  // Tier 2 - Advanced Utility Spells
  researchAdvancedTransference: ['spell_essenceDrain'],
  
  // Tier 3 - Master Utility Spells
  researchMasterTransference: ['spell_soulTransfer'],
};

// Base effects unlocked when player gets enchanting skill level 1
export const BASE_UNLOCKED_EFFECTS: string[] = [];  // No effects at game start

// Effects that unlock when getting enchanting skill level 1
export const ENCHANTING_UNLOCK_EFFECTS = ['spell_manaBolt'];

// ─── Base Unlocked Elements ───────────────────────────────────────────────────
export const BASE_UNLOCKED_ELEMENTS = ['fire', 'water', 'air', 'earth'];

// ─── Study Speed Formula ─────────────────────────────────────────────────────
export function getStudySpeedMultiplier(skills: Record<string, number>): number {
  return 1 + (skills.quickLearner || 0) * 0.1;
}

// ─── Study Cost Formula ───────────────────────────────────────────────────────
export function getStudyCostMultiplier(skills: Record<string, number>): number {
  return 1 - (skills.focusedMind || 0) * 0.05;
}

// ─── Element Opposites for Damage Calculation ────────────────────────────────
export const ELEMENT_OPPOSITES: Record<string, string> = {
  fire: 'water', water: 'fire',
  air: 'earth', earth: 'air',
  light: 'dark', dark: 'light',
  lightning: 'earth', // Lightning is weak to earth (grounding)
};

// ─── Element Icon Mapping (Lucide Icons) ──────────────────────────────────────
// Note: These are string identifiers for dynamic icon loading
// The actual Lucide icons are imported in the components
export const ELEMENT_ICON_NAMES: Record<string, string> = {
  fire: 'Flame',
  water: 'Droplet',
  air: 'Wind',
  earth: 'Mountain',
  light: 'Sun',
  dark: 'Moon',
  death: 'Skull',
  transference: 'Link',
  metal: 'Target',
  sand: 'Hourglass',
  lightning: 'Zap',
  crystal: 'Gem',
  stellar: 'Star',
  void: 'CircleDot',
  raw: 'Circle',
};