#pragma once
#include "imgui.h"

// Design tokens — colores, spacing, radius, font-size.
// Inspirados en el DESIGN_SYSTEM de @fn_library (Mantine v9 dark + indigo primary).
// Reemplaza hardcode disperso de ImVec4(...) por constantes semánticas.

namespace fn_tokens {

namespace colors {
    // Primary (indigo-inspired, Mantine indigo.6)
    constexpr ImVec4 primary       {0.25f, 0.37f, 0.85f, 1.0f};
    constexpr ImVec4 primary_hover {0.30f, 0.42f, 0.90f, 1.0f};

    // Semantic
    constexpr ImVec4 success {0.13f, 0.70f, 0.42f, 1.0f};
    constexpr ImVec4 warning {0.95f, 0.60f, 0.20f, 1.0f};
    constexpr ImVec4 error   {0.87f, 0.26f, 0.30f, 1.0f};
    constexpr ImVec4 info    {0.22f, 0.55f, 0.95f, 1.0f};

    // Background (dark by default — matches DESIGN_SYSTEM.md §2 & §8)
    constexpr ImVec4 bg            {0.08f, 0.08f, 0.10f, 1.0f}; // window bg
    constexpr ImVec4 surface       {0.12f, 0.12f, 0.15f, 1.0f}; // panels/cards
    constexpr ImVec4 surface_hover {0.16f, 0.16f, 0.20f, 1.0f};

    // Text
    constexpr ImVec4 text       {0.95f, 0.95f, 0.95f, 1.0f};
    constexpr ImVec4 text_muted {0.60f, 0.60f, 0.65f, 1.0f};
    constexpr ImVec4 text_dim   {0.40f, 0.40f, 0.45f, 1.0f};

    // Border
    constexpr ImVec4 border {0.20f, 0.20f, 0.25f, 1.0f};
}

namespace spacing {
    constexpr float xs = 4.0f;
    constexpr float sm = 8.0f;
    constexpr float md = 12.0f;
    constexpr float lg = 16.0f;
    constexpr float xl = 24.0f;
}

namespace radius {
    constexpr float none = 0.0f;
    constexpr float sm = 3.0f;
    constexpr float md = 5.0f;
    constexpr float lg = 8.0f;
    constexpr float xl = 12.0f;
}

namespace font_size {
    constexpr float xs  = 10.0f;
    constexpr float sm  = 12.0f;
    constexpr float md  = 14.0f; // default
    constexpr float lg  = 18.0f;
    constexpr float xl  = 24.0f;
    constexpr float xxl = 32.0f;
}

// Aplica los tokens al ImGuiStyle global. Llamar una vez al arrancar la app,
// después de ImGui::CreateContext() y antes del primer frame.
void apply_dark_theme();

} // namespace fn_tokens