class_name Palette
extends RefCounted
## The single source of truth for every colour token (mockups README, "Color
## tokens"). §2: presentation — owns no state. No hex literal may live anywhere
## else in the client; every script, shader, and the Theme builder reads here.

# --- Dark backgrounds ---
const STAGE_1 := Color("0a0806")
const STAGE_2 := Color("0f0d0b")
const BAY_STRIPE_A := Color("26221c")
const BAY_STRIPE_B := Color("221e18")
const DARK_PANEL_70 := Color("120f0b", 0.7)
const DARK_PANEL_85 := Color("0e0b09", 0.85)
const DARK_PANEL_90 := Color("0a0806", 0.9)
# border ladder, light -> dark
const BORDER_1 := Color("6b6152")
const BORDER_2 := Color("5a5348")
const BORDER_3 := Color("4a4238")
const BORDER_4 := Color("3a352e")
const BORDER_5 := Color("1a1512")

# --- Title-screen ambiance (warm radial background) ---
const TITLE_WARM := Color("2a2018")   # radial centre
const TITLE_MID := Color("160f0a")    # radial midpoint (STAGE_1 is the edge)

# --- Parchment ---
const SHEET_TOP := Color("ece2ca")
const SHEET_BOTTOM := Color("e4d8bd")
const LOG_TOP := Color("e7dcc4")
const LOG_BOTTOM := Color("ddd0b2")
const PARCHMENT_CARD := Color("f1e8d2")
const PARCHMENT_INSET := Color("e6d9b8")
const PARCHMENT_INSET_2 := Color("d9c9a2")
const PARCHMENT_BORDER := Color("bfa878")
const PARCHMENT_BORDER_2 := Color("cbb684")
const PARCHMENT_BORDER_3 := Color("a99464")
const TAB_INACTIVE_BG := Color("efe6cf")

# --- Ink (text on parchment) ---
const INK_HEADING := Color("3a2f1c")
const INK_HEADING_2 := Color("4a3520")
const INK_BODY := Color("4a3f2c")
const INK_MUTED := Color("6a5a3a")
const INK_LABEL := Color("5a4326")
const INK_GOLD := Color("8f6a2a")

# --- Text on dark ---
const CREAM := Color("e8ddc8")
const CREAM_BRIGHT := Color("f0e6d0")
const CREAM_SECONDARY := Color("c9bda3")
const MUTED_MONO := Color("9a8f78")
const MUTED_MONO_DIM := Color("7a7060")

# --- Accents (muted for grit) ---
const BLOOD := Color("8f3a34")        # core CTA / danger / selection / enemies
const BLOOD_BRIGHT := Color("b8524a") # hover
const BLOOD_DARK := Color("7a2f29")   # CTA gradient bottom
const GOLD := Color("a9843f")         # highlight / currency / current-turn
const GOLD_BRIGHT := Color("c8963f")
const STEEL := Color("5f8a9a")        # allies / mana
const STEEL_BLUE := Color("4f7ab8")
const STEEL_DEEP := Color("243f6f")
const GREEN := Color("5f8a4f")        # stamina / success / cleared

# --- Stat bars ---
const HP_A := Color("b8524a")
const HP_B := Color("8f3a34")
const MP_A := Color("4f7ab8")
const MP_B := Color("243f6f")
const STAMINA := Color("8f9a4f")
const BAR_TRACK := Color("2a251f")
const BAR_BORDER := Color("4a4238")

# --- Rarity (ordered common..legendary) ---
const RARITY: Array[Color] = [
	Color("8a8378"),  # 0 common
	Color("5f8a4f"),  # 1 uncommon
	Color("4f7ab8"),  # 2 rare
	Color("8a5fb8"),  # 3 epic
	Color("c8963f"),  # 4 legendary
]


static func rarity_color(rarity: int) -> Color:
	return RARITY[clampi(rarity, 0, RARITY.size() - 1)]


static func stat_bar(kind: StringName) -> Array:
	match kind:
		&"hp": return [HP_A, HP_B]
		&"mp": return [MP_A, MP_B]
		&"stamina": return [STAMINA, STAMINA]
		_: return [MUTED_MONO, MUTED_MONO_DIM]