// === HELPER FUNCTIONS ===

function getName(t) {
    return state.lang === "en"
        ? (t.name_en || t.name_es || t.ref)
        : state.lang === "ch"
            ? (t.name_ch || t.name_en || t.name_es || t.ref)
            : (t.name_es || t.name_en || t.ref);
}

function getImg(t) {
    return t.img_thumb_url || t.img_url || "";
}

function getFullImg(t) {
    return t.img_url || t.img_thumb_url || "";
}

function filterTags() {
    let f = [...state.tags];

    // Search filter
    if (state.search) {
        const q = state.search.toLowerCase();
        f = f.filter(t =>
            (t.ref||"").toLowerCase().includes(q) ||
            (t.name_es||"").toLowerCase().includes(q) ||
            (t.name_en||"").toLowerCase().includes(q) ||
            (t.mrf||"").toLowerCase().includes(q)
        );
    }

    // Group filter
    if (state.group !== "all") {
        f = f.filter(t => t.set_hst === state.group);
    }

    // Library filter
    if (state.library !== "all" && state.libraryMembers.size) {
        f = f.filter(t => state.libraryMembers.has(t.mrf));
    }

    return f;
}

function toast(msg) {
    const t = document.getElementById("toast");
    t.textContent = msg;
    t.classList.add("show");
    setTimeout(() => t.classList.remove("show"), 2500);
}

function copyMrf(mrf) {
    navigator.clipboard.writeText(mrf).then(() => toast(`Copiado: ${mrf.slice(0,16)}...`));
}

function closeDetail() {
    document.getElementById("right-panel").classList.remove("open");
    state.selectedTag = null;
}

function toggleSel(mrf) {
    state.selected.has(mrf) ? state.selected.delete(mrf) : state.selected.add(mrf);
    updateSelCount();
    renderView();
}

function updateSelCount() {
    document.getElementById("sel-count").textContent = state.selected.size ? `(${state.selected.size})` : "";
}

function clearSelection() {
    state.selected.clear();
    state.selectionMode = false;
    document.getElementById("btn-sel").classList.remove("active");
    updateSelCount();
}