#include "views.h"
#include "data_http.h"
#include <filesystem>
#include "imgui.h"
#include "implot.h"

#include "viz/kpi_card.h"
#include "viz/bar_chart.h"
#include "viz/pie_chart.h"
#include "viz/table_view.h"
#include "viz/sparkline.h"
#include "core/icons_tabler.h"
#include "core/dashboard_panel.h"
#include "core/dashboard_grid.h"
#include "core/fullscreen_window.h"
#include "core/tokens.h"
#include "core/page_header.h"
#include "core/empty_state.h"
#include "core/badge.h"
#include "core/button.h"
#include "core/icon_button.h"
#include "core/toolbar.h"
#include "core/modal_dialog.h"
#include "core/text_input.h"
#include "core/select.h"
#include "core/toast.h"
#include "core/process_runner.h"
#include "core/tree_view.h"

#include <cstdio>
#include <string>
#include <vector>

// ---------------------------------------------------------------------------
// Shared state
// ---------------------------------------------------------------------------

static std::string g_api_url;
static fn_ui::ProcessRunner g_reindex_runner;
static fn_ui::ProcessRunner g_add_runner;

// Add modal state
enum class AddKind : int { App = 0, Analysis = 1, Vault = 2 };
static bool   g_show_add       = false;
static int    g_add_kind_idx   = static_cast<int>(AddKind::App);
static int    g_add_project_idx = -1;  // -1 = (none / sin project)
static int    g_add_lang_idx   = 0;
static int    g_add_domain_idx = 0;
static char   g_add_name[128]  = {};
static char   g_add_desc[256]  = {};
static char   g_add_packages[256] = {};
static char   g_add_vault_path[512] = {};

void views_set_api_url(const std::string& url) { g_api_url = url; }

static std::vector<const char*> to_cstr(const std::vector<std::string>& v) {
    std::vector<const char*> out;
    out.reserve(v.size());
    for (auto& s : v) out.push_back(s.c_str());
    return out;
}

static void trigger_reload() {
    ImGui::GetIO().UserData = reinterpret_cast<void*>(1);
}

// ---------------------------------------------------------------------------
// KPI row
// ---------------------------------------------------------------------------

void draw_kpi_row(const RegistryData& data) {
    const RegistryStats& stats = data.stats;
    float tested_pct = stats.total_functions > 0
        ? 100.0f * stats.tested_functions / stats.total_functions : 0.0f;
    float pure_pct = stats.total_functions > 0
        ? 100.0f * stats.pure_functions / stats.total_functions : 0.0f;

    const ImGuiTableFlags flags = ImGuiTableFlags_SizingStretchSame
                                | ImGuiTableFlags_NoPadOuterX;

    // Sparkline shared: ultimos 30 dias de creacion de funciones (timeline real
    // del registry). Si no hay datos cargados, queda vacio y el card mostrara
    // solo valor + delta placeholder.
    const float* spark_data  = data.date_values.empty() ? nullptr : data.date_values.data();
    const int    spark_count = static_cast<int>(data.date_values.size());

    if (ImGui::BeginTable("##kpi_grid", 4, flags)) {
        struct KPI { const char* label; float value; const char* fmt; const char* icon; };
        const KPI cards[8] = {
            {"Functions",  static_cast<float>(stats.total_functions),  "%.0f",   TI_FUNCTION},
            {"Types",      static_cast<float>(stats.total_types),      "%.0f",   TI_HEXAGON},
            {"Apps",       static_cast<float>(stats.total_apps),       "%.0f",   TI_APPS},
            {"Analysis",   static_cast<float>(stats.total_analysis),   "%.0f",   TI_FLASK},
            {"Unit Tests", static_cast<float>(stats.total_unit_tests), "%.0f",   TI_TEST_PIPE},
            {"Proposals",  static_cast<float>(stats.total_proposals),  "%.0f",   TI_BULB},
            {"Tested",     tested_pct,                                 "%.0f%%", TI_CIRCLE_CHECK},
            {"Pure",       pure_pct,                                   "%.0f%%", TI_HEART},
        };
        for (int i = 0; i < 8; i++) {
            if (i % 4 == 0) ImGui::TableNextRow();
            ImGui::TableSetColumnIndex(i % 4);
            kpi_card(cards[i].label, cards[i].value, 0.0f,
                     spark_data, spark_count,
                     cards[i].fmt, cards[i].icon);
        }
        ImGui::EndTable();
    }
}

// ---------------------------------------------------------------------------
// Charts
// ---------------------------------------------------------------------------

static bool chart_panel_begin(const char* title, const ImVec2& size) {
    using namespace fn_tokens;
    ImGui::PushStyleColor(ImGuiCol_ChildBg, colors::surface);
    ImGui::PushStyleColor(ImGuiCol_Border, colors::border);
    ImGui::PushStyleVar(ImGuiStyleVar_ChildRounding, radius::md);
    ImGui::PushStyleVar(ImGuiStyleVar_ChildBorderSize, 1.0f);
    ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(spacing::md, spacing::md));

    ImGui::BeginChild(title, size, ImGuiChildFlags_Borders,
                      ImGuiWindowFlags_NoScrollbar | ImGuiWindowFlags_NoScrollWithMouse);

    ImGui::PushStyleColor(ImGuiCol_Text, colors::text_muted);
    ImGui::TextUnformatted(title);
    ImGui::PopStyleColor();
    ImGui::Separator();
    return true;
}

static void chart_panel_end() {
    ImGui::EndChild();
    ImGui::PopStyleVar(3);
    ImGui::PopStyleColor(2);
}

void draw_charts(RegistryData& data, float height) {
    const ImGuiTableFlags flags = ImGuiTableFlags_SizingStretchSame
                                | ImGuiTableFlags_NoPadOuterX;
    const float plot_h = height - 48.0f;

    if (ImGui::BeginTable("##chart_grid", 4, flags)) {
        ImGui::TableNextRow();

        ImGui::TableSetColumnIndex(0);
        {
            ImVec2 sz(ImGui::GetContentRegionAvail().x, height);
            chart_panel_begin("By Language", sz);
            auto labels = to_cstr(data.lang_labels);
            if (!labels.empty())
                bar_chart("##lang", labels.data(), data.lang_values.data(),
                          static_cast<int>(labels.size()), 0.67f, plot_h);
            chart_panel_end();
        }
        ImGui::TableSetColumnIndex(1);
        {
            ImVec2 sz(ImGui::GetContentRegionAvail().x, height);
            chart_panel_begin("By Domain", sz);
            auto labels = to_cstr(data.domain_labels);
            if (!labels.empty())
                bar_chart("##domain", labels.data(), data.domain_values.data(),
                          static_cast<int>(labels.size()), 0.67f, plot_h);
            chart_panel_end();
        }
        ImGui::TableSetColumnIndex(2);
        {
            ImVec2 sz(ImGui::GetContentRegionAvail().x, height);
            chart_panel_begin("Purity", sz);
            const char* labels[] = {"Pure", "Impure"};
            float values[] = {static_cast<float>(data.stats.pure_functions),
                              static_cast<float>(data.stats.impure_functions)};
            pie_chart("##purity", labels, values, 2);
            chart_panel_end();
        }
        ImGui::TableSetColumnIndex(3);
        {
            ImVec2 sz(ImGui::GetContentRegionAvail().x, height);
            chart_panel_begin("Kind", sz);
            auto labels = to_cstr(data.kind_labels);
            if (!labels.empty())
                pie_chart("##kind", labels.data(), data.kind_values.data(),
                          static_cast<int>(labels.size()));
            chart_panel_end();
        }
        ImGui::EndTable();
    }
}

// ---------------------------------------------------------------------------
// Tables
// ---------------------------------------------------------------------------

void draw_recent_functions(const std::vector<FunctionRow>& funcs) {
    if (funcs.empty()) {
        empty_state("( no data )", "No functions yet",
                    "Run 'fn index' to populate the registry");
        return;
    }
    const char* headers[] = {"Name", "Lang", "Domain", "Kind", "Purity", "Tested", "Created"};
    constexpr int cols = 7;
    std::vector<std::string> cell_strings;
    cell_strings.reserve(funcs.size() * cols);
    for (auto& f : funcs) {
        cell_strings.push_back(f.name);
        cell_strings.push_back(f.lang);
        cell_strings.push_back(f.domain);
        cell_strings.push_back(f.kind);
        cell_strings.push_back(f.purity);
        cell_strings.push_back(f.tested ? "yes" : "no");
        cell_strings.push_back(f.created_at.substr(0, 10));
    }
    auto cells = to_cstr(cell_strings);
    table_view("##recent", headers, cols, cells.data(), static_cast<int>(funcs.size()));
}

void draw_apps_list(const std::vector<AppRow>& apps) {
    if (apps.empty()) {
        empty_state("( no data )", "No apps registered",
                    "Use the + Add button above or run 'fn sync'");
        return;
    }
    const char* headers[] = {"Name", "Lang", "Domain", "Framework", "Git", "Description"};
    constexpr int cols = 6;
    std::vector<std::string> cell_strings;
    cell_strings.reserve(apps.size() * cols);
    for (auto& a : apps) {
        cell_strings.push_back(a.name);
        cell_strings.push_back(a.lang);
        cell_strings.push_back(a.domain);
        cell_strings.push_back(a.framework);
        // Indicador de git: tiene repo remoto (gitea), solo local, o ninguno.
        // - "remote": repo_url poblado en el frontmatter del app.md
        // - "local":  hay .git/ en dir_path pero sin repo_url
        // - "-":      ni .git ni repo_url
        std::string git_status;
        if (!a.repo_url.empty()) {
            git_status = "remote";
        } else if (!a.dir_path.empty()) {
            std::error_code ec;
            if (std::filesystem::exists(std::filesystem::path(a.dir_path) / ".git", ec)) {
                git_status = "local";
            } else {
                git_status = "-";
            }
        } else {
            git_status = "-";
        }
        cell_strings.push_back(git_status);
        cell_strings.push_back(a.description);
    }
    auto cells = to_cstr(cell_strings);
    table_view("##apps", headers, cols, cells.data(), static_cast<int>(apps.size()));
}

void draw_analysis_list(const std::vector<AnalysisRow>& analyses) {
    if (analyses.empty()) {
        empty_state("( no data )", "No analysis yet",
                    "Use the + Add button above with kind = Analysis");
        return;
    }
    const char* headers[] = {"Name", "Lang", "Domain", "Description"};
    constexpr int cols = 4;
    std::vector<std::string> cell_strings;
    cell_strings.reserve(analyses.size() * cols);
    for (auto& a : analyses) {
        cell_strings.push_back(a.name);
        cell_strings.push_back(a.lang);
        cell_strings.push_back(a.domain);
        cell_strings.push_back(a.description);
    }
    auto cells = to_cstr(cell_strings);
    table_view("##analysis", headers, cols, cells.data(), static_cast<int>(analyses.size()));
}

void draw_types_list(const std::vector<TypeRow>& types) {
    if (types.empty()) {
        empty_state("( no data )", "No types yet",
                    "Types are indexed from the registry alongside functions");
        return;
    }
    const char* headers[] = {"Name", "Lang", "Domain", "Algebraic", "Description"};
    constexpr int cols = 5;
    std::vector<std::string> cell_strings;
    cell_strings.reserve(types.size() * cols);
    for (auto& t : types) {
        cell_strings.push_back(t.name);
        cell_strings.push_back(t.lang);
        cell_strings.push_back(t.domain);
        cell_strings.push_back(t.algebraic);
        cell_strings.push_back(t.description);
    }
    auto cells = to_cstr(cell_strings);
    table_view("##types", headers, cols, cells.data(), static_cast<int>(types.size()));
}

// ---------------------------------------------------------------------------
// Projects view
// ---------------------------------------------------------------------------

static std::string g_selected_project_id = "";
static ProjectDetail g_project_detail;

static void refresh_project_detail() {
    g_project_detail = ProjectDetail{};
    if (g_selected_project_id.empty() || g_api_url.empty()) return;
    load_project_detail_http(g_api_url, g_selected_project_id, g_project_detail);
}

void draw_projects_list(RegistryData& data) {
    if (data.projects.empty() && data.orphan_apps == 0
        && data.orphan_analyses == 0 && data.orphan_vaults == 0) {
        empty_state("( no data )", "No projects yet",
                    "Create a project under projects/{name}/ with project.md and reindex");
        return;
    }

    // Dos columnas: izquierda arbol, derecha detalle.
    const ImGuiTableFlags flags = ImGuiTableFlags_Resizable
                                | ImGuiTableFlags_SizingStretchProp;
    if (!ImGui::BeginTable("##proj_layout", 2, flags)) return;

    ImGui::TableSetupColumn("tree",   ImGuiTableColumnFlags_WidthStretch, 1.0f);
    ImGui::TableSetupColumn("detail", ImGuiTableColumnFlags_WidthStretch, 2.5f);
    ImGui::TableNextRow();

    // --- Left column: tree ---
    ImGui::TableSetColumnIndex(0);
    ImGui::BeginChild("##proj_tree", ImVec2(0, 0), ImGuiChildFlags_Borders);
    for (const auto& p : data.projects) {
        bool sel = (g_selected_project_id == p.id);
        char label[256];
        std::snprintf(label, sizeof(label), "%s  [%d/%d/%d]",
                      p.name.c_str(), p.apps_count, p.analyses_count, p.vaults_count);
        fn_ui::tree_leaf(p.id.c_str(), label, sel);
        if (fn_ui::tree_node_clicked()) {
            g_selected_project_id = p.id;
            refresh_project_detail();
        }
    }
    // Orphans
    if (data.orphan_apps + data.orphan_analyses + data.orphan_vaults > 0) {
        bool sel = (g_selected_project_id == "orphans");
        char label[128];
        std::snprintf(label, sizeof(label), "(orphans)  [%d/%d/%d]",
                      data.orphan_apps, data.orphan_analyses, data.orphan_vaults);
        fn_ui::tree_leaf("orphans", label, sel);
        if (fn_ui::tree_node_clicked()) {
            g_selected_project_id = "orphans";
            refresh_project_detail();
        }
    }
    ImGui::EndChild();

    // --- Right column: detail ---
    ImGui::TableSetColumnIndex(1);
    ImGui::BeginChild("##proj_detail", ImVec2(0, 0), ImGuiChildFlags_Borders);
    if (g_selected_project_id.empty()) {
        empty_state("\xe2\x86\x90", "Select a project",
                    "Click a project on the left to see its apps, analyses and vaults");
    } else {
        const auto& d = g_project_detail;
        ImGui::PushStyleColor(ImGuiCol_Text, fn_tokens::colors::text);
        if (!d.name.empty())
            ImGui::TextUnformatted(d.name.c_str());
        else
            ImGui::TextUnformatted(g_selected_project_id.c_str());
        ImGui::PopStyleColor();
        if (!d.description.empty()) {
            ImGui::PushStyleColor(ImGuiCol_Text, fn_tokens::colors::text_muted);
            ImGui::TextWrapped("%s", d.description.c_str());
            ImGui::PopStyleColor();
        }
        ImGui::Separator();

        if (ImGui::BeginTabBar("##proj_tabs")) {
            char tab_apps[64];     std::snprintf(tab_apps, sizeof(tab_apps),     "Apps (%zu)",     d.apps.size());
            char tab_analyses[64]; std::snprintf(tab_analyses, sizeof(tab_analyses), "Analysis (%zu)", d.analyses.size());
            char tab_vaults[64];   std::snprintf(tab_vaults, sizeof(tab_vaults),   "Vaults (%zu)",   d.vaults.size());

            if (ImGui::BeginTabItem(tab_apps)) {
                draw_apps_list(d.apps);
                ImGui::EndTabItem();
            }
            if (ImGui::BeginTabItem(tab_analyses)) {
                draw_analysis_list(d.analyses);
                ImGui::EndTabItem();
            }
            if (ImGui::BeginTabItem(tab_vaults)) {
                if (d.vaults.empty()) {
                    empty_state("( no data )", "No vaults in this project",
                                "Use the + Add button with kind = Vault (requires a project)");
                } else {
                    const char* headers[] = {"Name", "Path", "Symlink", "Description"};
                    std::vector<std::string> cells;
                    cells.reserve(d.vaults.size() * 4);
                    for (auto& v : d.vaults) {
                        cells.push_back(v.name);
                        cells.push_back(v.path);
                        cells.push_back(v.symlink ? "yes" : "no");
                        cells.push_back(v.description);
                    }
                    auto cp = to_cstr(cells);
                    table_view("##vaults", headers, 4, cp.data(),
                               static_cast<int>(d.vaults.size()));
                }
                ImGui::EndTabItem();
            }
            ImGui::EndTabBar();
        }
    }
    ImGui::EndChild();

    ImGui::EndTable();
}

// ---------------------------------------------------------------------------
// Actions bar (Reindex + Add button) + Add modal
// ---------------------------------------------------------------------------

static const char* kLangs[]   = {"go", "py", "ts", "sh", "cpp"};
static const char* kDomains[] = {"core", "infra", "finance", "datascience",
                                 "cybersecurity", "shell", "tui", "pipelines",
                                 "browser", "viz", "gfx", "notebook"};

static void submit_add() {
    if (g_api_url.empty()) {
        fn_ui::toast_push(fn_ui::ToastKind::Error, "API URL not set");
        return;
    }
    std::string name = g_add_name;
    std::string desc = g_add_desc;
    std::string project;
    if (g_add_project_idx >= 0) {
        // g_add_project_idx indexa la lista live de projects (resolved en el modal)
        // guardada en g_project_ids_cache — ver draw_add_modal
    }

    // Resolvemos project en draw_add_modal y lo pasamos via g_add_project_resolved
    extern std::string g_add_project_resolved;
    project = g_add_project_resolved;

    AddKind kind = static_cast<AddKind>(g_add_kind_idx);
    std::string url = g_api_url;

    fn_ui::runner_trigger(g_add_runner,
        [kind, url, name, desc, project,
         lang_idx = g_add_lang_idx, domain_idx = g_add_domain_idx,
         packages = std::string(g_add_packages),
         vault_path = std::string(g_add_vault_path)
        ](std::string& out) -> bool {
            std::string body;
            bool ok = false;
            switch (kind) {
                case AddKind::App:
                    ok = http_post_add_app(url, name, kLangs[lang_idx],
                                           kDomains[domain_idx], project, desc, body);
                    break;
                case AddKind::Analysis:
                    ok = http_post_add_analysis(url, name, project, packages, desc, body);
                    break;
                case AddKind::Vault:
                    ok = http_post_add_vault(url, name, project, vault_path, desc, body);
                    break;
            }
            out = body;
            return ok;
        });
}

std::string g_add_project_resolved = "";

static void draw_add_modal(RegistryData& data) {
    if (!fn_ui::modal_dialog_begin("Add...", &g_show_add, ImVec2(460, 0))) {
        fn_ui::modal_dialog_end();
        return;
    }

    // Kind selector
    const char* kinds[] = {"App", "Analysis", "Vault"};
    fn_ui::select("Kind", &g_add_kind_idx, kinds, 3);

    // Project selector (del registro vivo)
    std::vector<std::string> proj_labels;
    std::vector<std::string> proj_ids;
    for (auto& p : data.projects) {
        proj_labels.push_back(p.name);
        proj_ids.push_back(p.id);
    }
    std::vector<const char*> proj_cstr;
    for (auto& s : proj_labels) proj_cstr.push_back(s.c_str());

    AddKind kind = static_cast<AddKind>(g_add_kind_idx);
    fn_ui::select("Project", &g_add_project_idx, proj_cstr.data(),
                  static_cast<int>(proj_cstr.size()),
                  kind != AddKind::Vault /* vault obliga a project */);
    g_add_project_resolved = (g_add_project_idx >= 0 && g_add_project_idx < (int)proj_ids.size())
                           ? proj_ids[g_add_project_idx] : "";

    fn_ui::text_input("Name", g_add_name, sizeof(g_add_name),
                      "snake_case, a-z0-9_");
    fn_ui::text_input("Description", g_add_desc, sizeof(g_add_desc));

    // Campos especificos segun kind
    if (kind == AddKind::App) {
        fn_ui::select("Lang",   &g_add_lang_idx,   kLangs,   5);
        fn_ui::select("Domain", &g_add_domain_idx, kDomains, 12);
    } else if (kind == AddKind::Analysis) {
        fn_ui::text_input("Packages (CSV)", g_add_packages, sizeof(g_add_packages),
                          "polars,scikit-learn,torch");
    } else if (kind == AddKind::Vault) {
        fn_ui::text_input("Path (abs, opcional)", g_add_vault_path, sizeof(g_add_vault_path),
                          "/home/lucas/vaults/my_data");
    }

    ImGui::Dummy(ImVec2(0, fn_tokens::spacing::sm));

    // Status del runner en curso
    fn_ui::runner_status(g_add_runner, "Creating...");

    // Detectar transicion running->done para cerrar y notificar
    static fn_ui::RunnerState last_state = fn_ui::RunnerState::Idle;
    fn_ui::RunnerState now = g_add_runner.state();
    if (last_state == fn_ui::RunnerState::Running
        && (now == fn_ui::RunnerState::Success || now == fn_ui::RunnerState::Error)) {
        const bool ok = (now == fn_ui::RunnerState::Success);
        fn_ui::toast_push(ok ? fn_ui::ToastKind::Success : fn_ui::ToastKind::Error,
                          ok ? "Created OK — reloading" : g_add_runner.message().c_str());
        if (ok) {
            g_show_add = false;
            g_add_name[0] = '\0';
            g_add_desc[0] = '\0';
            g_add_packages[0] = '\0';
            g_add_vault_path[0] = '\0';
            trigger_reload();
        }
    }
    last_state = now;

    ImGui::Separator();
    if (fn_ui::button("Cancel", fn_ui::ButtonVariant::Subtle)) g_show_add = false;
    ImGui::SameLine();
    const bool disabled = g_add_runner.is_busy() || g_add_name[0] == '\0';
    if (disabled) ImGui::BeginDisabled();
    if (fn_ui::button("Create", fn_ui::ButtonVariant::Primary)) {
        submit_add();
    }
    if (disabled) ImGui::EndDisabled();

    fn_ui::modal_dialog_end();
}

static void draw_actions_bar() {
    if (g_api_url.empty()) return;

    fn_ui::toolbar_begin();
    if (fn_ui::button("Reindex", fn_ui::ButtonVariant::Primary)
        && !g_reindex_runner.is_busy()) {
        const std::string url = g_api_url;
        fn_ui::runner_trigger(g_reindex_runner, [url](std::string& out) -> bool {
            return http_post_reindex(url, out);
        });
    }
    ImGui::SameLine();
    if (fn_ui::button("+ Add", fn_ui::ButtonVariant::Secondary)) {
        g_show_add = true;
        g_add_runner.reset();
    }
    ImGui::SameLine();
    if (fn_ui::button("Reload", fn_ui::ButtonVariant::Subtle)) {
        trigger_reload();
    }
    ImGui::SameLine();
    fn_ui::toast_inbox_button("##inbox");
    fn_ui::toolbar_end();

    // Status del reindex debajo del toolbar
    static fn_ui::RunnerState last_reindex_state = fn_ui::RunnerState::Idle;
    fn_ui::RunnerState now = g_reindex_runner.state();
    if (now != fn_ui::RunnerState::Idle) {
        fn_ui::runner_status(g_reindex_runner, "Reindexing...");
    }
    if (last_reindex_state == fn_ui::RunnerState::Running
        && (now == fn_ui::RunnerState::Success || now == fn_ui::RunnerState::Error)) {
        const bool ok = (now == fn_ui::RunnerState::Success);
        fn_ui::toast_push(ok ? fn_ui::ToastKind::Success : fn_ui::ToastKind::Error,
                          g_reindex_runner.message().c_str());
        if (ok) trigger_reload();
    }
    last_reindex_state = now;
}

// ---------------------------------------------------------------------------
// Main draw
// ---------------------------------------------------------------------------

void draw_dashboard(RegistryData& data) {
    // Tema aplicado por fn::run_app() (app_base.h, ThemeMode::FnDark default).
    // FPS overlay lo dibuja app_base.cpp segun settings().show_fps — no llamarlo aqui.

    fullscreen_window_begin("##dashboard");

    char subtitle[128];
    std::snprintf(subtitle, sizeof(subtitle),
        "%d functions  ·  %d types  ·  %d apps  ·  %d analyses  ·  %zu projects",
        data.stats.total_functions, data.stats.total_types,
        data.stats.total_apps, data.stats.total_analysis,
        data.projects.size());

    page_header_begin("fn_registry Dashboard", subtitle);
    page_header_end();

    draw_actions_bar();
    ImGui::Dummy(ImVec2(0, fn_tokens::spacing::sm));

    draw_kpi_row(data);
    ImGui::Dummy(ImVec2(0, fn_tokens::spacing::md));

    // Altura del bloque de charts proporcional al espacio disponible: ~28% del
    // espacio restante despues de KPIs/header/tabs (clamped a [200, 360] px
    // para que ni se aplaste ni domine en pantallas grandes).
    const float remaining_h = ImGui::GetContentRegionAvail().y;
    float chart_h = remaining_h * 0.32f;
    if (chart_h < 200.0f) chart_h = 200.0f;
    if (chart_h > 360.0f) chart_h = 360.0f;
    draw_charts(data, chart_h);
    ImGui::Dummy(ImVec2(0, fn_tokens::spacing::md));

    if (ImGui::BeginTabBar("##tables")) {
        if (ImGui::BeginTabItem("Projects")) {
            draw_projects_list(data);
            ImGui::EndTabItem();
        }
        if (ImGui::BeginTabItem("Recent Functions")) {
            draw_recent_functions(data.recent_funcs);
            ImGui::EndTabItem();
        }
        if (ImGui::BeginTabItem("Apps")) {
            draw_apps_list(data.apps);
            ImGui::EndTabItem();
        }
        if (ImGui::BeginTabItem("Analysis")) {
            draw_analysis_list(data.analyses);
            ImGui::EndTabItem();
        }
        if (ImGui::BeginTabItem("Types")) {
            draw_types_list(data.types);
            ImGui::EndTabItem();
        }
        ImGui::EndTabBar();
    }

    draw_add_modal(data);

    fullscreen_window_end();

    // Toasts encima de todo
    fn_ui::toast_render();
}