extends RefCounted

const DEEP_NAVY := Color("0b1324")
const ROYAL_BLUE := Color("2563eb")
const SKY_BLUE := Color("38bdf8")
const PURPLE := Color("7c3aed")
const MAGENTA := Color("d946ef")
const TEAL := Color("14b8a6")
const SUCCESS := Color("22c55e")
const AMBER := Color("f59e0b")
const SUN_ICON := preload("res://assets/icons/lucide/sun.svg")
const MOON_ICON := preload("res://assets/icons/lucide/moon.svg")
const SLATE := Color("94a3b8")
const DARK_TEXT := Color("f8fafc")
const LIGHT_TEXT := Color("0f172a")
const LIGHT_BACKGROUND := Color("f1f5f9")
const LIGHT_SURFACE := Color("ffffff")
const LIGHT_SURFACE_SUBTLE := Color("f8fafc")
const LIGHT_BORDER := Color("dbe3ef")
const LIGHT_MUTED := Color("64748b")

static var font: Font = preload("res://assets/fonts/Inter-Variable.ttf")


static func text_color(dark: bool) -> Color:
	return DARK_TEXT if dark else LIGHT_TEXT


static func muted_color(dark: bool) -> Color:
	return Color("a9b5ca") if dark else LIGHT_MUTED


static func background_color(dark: bool) -> Color:
	return DEEP_NAVY if dark else LIGHT_BACKGROUND


static func background_material(dark: bool) -> ShaderMaterial:
	var shader := Shader.new()
	shader.code = """
shader_type canvas_item;
uniform bool dark_mode = true;

void fragment() {
	vec2 uv = UV;
	vec3 base = dark_mode ? vec3(0.018, 0.043, 0.090) : vec3(0.965, 0.975, 0.990);
	float left_glow = 1.0 - smoothstep(0.0, 0.58, distance(uv, vec2(-0.02, 0.12)));
	float right_glow = 1.0 - smoothstep(0.0, 0.58, distance(uv, vec2(1.02, 0.92)));
	vec3 blue = dark_mode ? vec3(0.075, 0.055, 0.35) : vec3(0.70, 0.80, 1.0);
	vec3 purple = dark_mode ? vec3(0.18, 0.035, 0.52) : vec3(0.86, 0.78, 1.0);
	vec3 color = base + blue * left_glow * (dark_mode ? 0.55 : 0.28);
	color += purple * right_glow * (dark_mode ? 0.62 : 0.12);
	COLOR = vec4(color, 1.0);
}
"""
	var material := ShaderMaterial.new()
	material.shader = shader
	material.set_shader_parameter("dark_mode", dark)
	return material


static func logo_cutout_material() -> ShaderMaterial:
	var shader := Shader.new()
	shader.code = """
shader_type canvas_item;

void fragment() {
	vec4 source = texture(TEXTURE, UV);
	float brightness = max(source.r, max(source.g, source.b));
	float alpha = smoothstep(0.10, 0.24, brightness);
	COLOR = vec4(source.rgb, source.a * alpha);
}
"""
	var material := ShaderMaterial.new()
	material.shader = shader
	return material


static func panel_box(dark: bool) -> StyleBoxFlat:
	var box := StyleBoxFlat.new()
	box.bg_color = Color("0b1427cc") if dark else LIGHT_SURFACE
	box.border_color = Color("33415d") if dark else LIGHT_BORDER
	box.set_border_width_all(1)
	box.set_corner_radius_all(26)
	if not dark:
		box.shadow_color = Color(0.15, 0.23, 0.38, 0.12)
		box.shadow_size = 12
	box.content_margin_left = 64
	box.content_margin_right = 64
	box.content_margin_top = 62
	box.content_margin_bottom = 48
	return box


static func field_box(dark: bool, focused: bool = false) -> StyleBoxFlat:
	var box := StyleBoxFlat.new()
	box.bg_color = Color("0d172a") if dark else LIGHT_SURFACE
	box.border_color = ROYAL_BLUE if focused else (Color("33415d") if dark else LIGHT_BORDER)
	box.set_border_width_all(1)
	box.set_corner_radius_all(10)
	box.content_margin_left = 22
	box.content_margin_right = 22
	box.content_margin_top = 18
	box.content_margin_bottom = 18
	return box


static func secondary_button_box(dark: bool, hover: bool = false) -> StyleBoxFlat:
	var box := field_box(dark, hover)
	box.bg_color = Color("111b30") if dark else Color("ffffff")
	return box


static func shell_box(dark: bool, edge: String) -> StyleBoxFlat:
	var box := StyleBoxFlat.new()
	box.bg_color = Color("071224") if dark else LIGHT_SURFACE
	box.border_color = Color("1c2b49") if dark else LIGHT_BORDER
	if edge == "right":
		box.border_width_right = 1
	elif edge == "bottom":
		box.border_width_bottom = 1
	return box


static func content_card_box(dark: bool, active: bool, accent: Color = ROYAL_BLUE) -> StyleBoxFlat:
	var box := StyleBoxFlat.new()
	box.bg_color = (Color("07192c") if active else Color("11182e")) if dark else LIGHT_SURFACE
	box.border_color = accent if active else (Color("2a365a") if dark else LIGHT_BORDER)
	box.set_border_width_all(1)
	box.set_corner_radius_all(12)
	if not dark:
		box.shadow_color = Color(0.15, 0.23, 0.38, 0.06)
		box.shadow_size = 5
	return box


static func icon_circle_box(dark: bool, accent: Color, radius: int, filled: bool = false) -> StyleBoxFlat:
	var box := StyleBoxFlat.new()
	box.bg_color = Color(accent, 0.62 if filled else (0.06 if dark else 0.045))
	box.border_color = Color(accent, 0.48 if dark else 0.18)
	box.set_border_width_all(1)
	box.set_corner_radius_all(radius)
	return box


static func badge_box(dark: bool, accent: Color) -> StyleBoxFlat:
	var box := StyleBoxFlat.new()
	box.bg_color = Color(accent, 0.12 if dark else 0.09)
	box.set_corner_radius_all(7)
	box.content_margin_left = 10
	box.content_margin_right = 10
	box.content_margin_top = 5
	box.content_margin_bottom = 5
	return box


static func gradient_button_box() -> StyleBoxTexture:
	var gradient := Gradient.new()
	gradient.colors = PackedColorArray([Color("1677ff"), Color("8f3ff4")])
	var texture := GradientTexture2D.new()
	texture.gradient = gradient
	texture.width = 512
	texture.height = 64
	texture.fill_from = Vector2(0, 0.5)
	texture.fill_to = Vector2(1, 0.5)
	var box := StyleBoxTexture.new()
	box.texture = texture
	box.content_margin_top = 18
	box.content_margin_bottom = 18
	return box


static func apply_font(control: Control) -> void:
	control.add_theme_font_override("font", font)


static func set_theme_toggle_icon(button: Button, dark: bool) -> void:
	button.text = ""
	button.icon = SUN_ICON if dark else MOON_ICON
	button.expand_icon = false
	button.add_theme_constant_override("icon_max_width", 22)
	for color_name in ["icon_normal_color", "icon_hover_color", "icon_pressed_color", "icon_focus_color"]:
		button.add_theme_color_override(color_name, AMBER)