{% extends "base.html" %}
{% block title %}Master HPP - FinansialApp{% endblock %}
{% block page_title %}Master HPP <small>Harga Pokok Produksi</small>{% endblock %}

{% block content %}
<style>
/* Layout */
.hpp-wrap{display:flex;gap:1rem;align-items:flex-start}
.hpp-sidebar{width:230px;flex-shrink:0}
.hpp-main{flex:1;min-width:0}

/* Sidebar produk */
.prod-item{display:flex;align-items:center;gap:.5rem;padding:.55rem .75rem;border-radius:8px;cursor:pointer;transition:background .15s;border:1px solid transparent}
.prod-item:hover{background:var(--card-h)}
.prod-item.active{background:var(--pg);border-color:var(--pgb)}
.prod-item .prod-nama{font-size:.82rem;font-weight:600;color:var(--tx);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.prod-item .prod-meta{font-size:.67rem;color:var(--tx3);margin-top:.1rem}
.prod-item .prod-del{flex-shrink:0;opacity:0;transition:opacity .15s;color:#ef4444;cursor:pointer;font-size:.75rem;padding:2px 4px;border-radius:4px}
.prod-item:hover .prod-del{opacity:1}

/* Table */
/* Lebar minimum tabel dijaga: kalau layar sempit tabel DIGESER mendatar (scroll),
   kolom isian TIDAK digencet sampai tulisan terpotong batas form. */
.hpp-table{min-width:1495px}
.hpp-table th{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;white-space:nowrap;padding:.45rem .55rem;vertical-align:middle;color:var(--tx3)}
.hpp-table td{padding:.28rem .45rem;vertical-align:middle}
.hpp-table .form-control-sm{font-size:.82rem;padding:.3rem .5rem;border-radius:5px;min-width:0}
.hpp-table input[type="number"]{text-align:right}
.col-auto{color:var(--pgp);font-weight:700;font-size:.8rem;white-space:nowrap}
.col-auto-dim{color:var(--tx3);font-size:.73rem}

/* Summary boxes */
.summary-box{border-radius:10px;padding:.8rem 1rem;text-align:center;flex:1}
.summary-box .lbl{font-size:.6rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;margin-bottom:.25rem}
.summary-box .val{font-size:1.2rem;font-weight:800}

/* Unsaved badge */
#unsavedBadge{display:none;font-size:.65rem;background:#c2410c;color:#fff;border-radius:4px;padding:1px 6px;font-weight:700;vertical-align:middle;margin-left:.4rem}

@media print{
  .sidebar,.topbar,.no-print{display:none!important}
  .main{margin-left:0!important}
  .hpp-sidebar{display:none!important}
  .hpp-wrap{display:block}
  .card{box-shadow:none!important;border:1px solid #e2e8f0!important}
  .hpp-table{min-width:0!important}
  .hpp-table .form-control-sm{border:none!important;background:transparent!important;padding:0!important}
  .btn{display:none!important}
}

/* ── Mobile / tablet: layout dibikin numpuk biar kalkulator tidak gepeng,
   dan tombol gampang dijangkau jari ── */
@media (max-width:991.98px){
  .hpp-wrap{flex-direction:column;gap:.75rem}
  .hpp-main{order:1;width:100%}
  .hpp-sidebar{order:2;width:100%}               /* daftar produk tersimpan pindah ke bawah kalkulator */
  .hpp-sidebar .card-body{max-height:240px;overflow-y:auto}
  .prod-item .prod-del{opacity:1}                /* tombol hapus selalu tampil (HP tidak punya hover) */
}
@media (max-width:575.98px){
  .summary-box{min-width:140px}                  /* kotak ringkasan boleh turun baris, tidak gepeng */
  .summary-box .val{font-size:1.05rem}
  /* tombol toolbar (Cetak/Reset/Simpan) jadi lebih lebar & enak dipencet */
  .hpp-toolbar>.d-flex{width:100%}
  .hpp-toolbar .btn{flex:1;padding-top:.4rem;padding-bottom:.4rem}
  /* kolom isian tetap cukup lebar terbaca; tabel digeser mendatar (angka tak terpotong batas form) */
  .hpp-table .form-control-sm{min-width:6.4rem}
  .hpp-table .f-frekuensi,.hpp-table .f-takaran{min-width:5rem}
}
</style>

<div class="hpp-wrap">

  <!-- ── SIDEBAR ── -->
  <div class="hpp-sidebar no-print">
    <div class="card">
      <div class="card-header d-flex align-items-center justify-content-between py-2 px-3">
        <span class="section-title" style="font-size:.82rem">
          <i class="fas fa-layer-group me-1" style="color:#15803d"></i>Produk Tersimpan</span>
        <button onclick="newProduk()" class="btn btn-success btn-xs py-0 px-2" style="font-size:.72rem" title="Produk baru">
          <i class="fas fa-plus"></i></button>
      </div>
      <div class="card-body p-2" id="sidebarList">
        {% if produk_list %}
          {% for p in produk_list %}
          <div class="prod-item" id="pi-{{ p.id }}" onclick="loadProduk({{ p.id }})" data-id="{{ p.id }}">
            <div style="flex:1;min-width:0">
              <div class="prod-nama">{{ p.nama }}</div>
              <div class="prod-meta">{{ p.jenis|replace('_',' ') }} · Jual {{ p.harga_jual|rp }} · HPP {{ p.total_hpp|rp }}</div>
            </div>
            <span class="prod-del" onclick="event.stopPropagation();deleteProduk({{ p.id }},this)" title="Hapus">
              <i class="fas fa-times"></i></span>
          </div>
          {% endfor %}
        {% else %}
          <div id="emptyMsg" class="text-center py-3 text-muted" style="font-size:.78rem">
            <i class="fas fa-inbox d-block mb-1" style="font-size:1.2rem;opacity:.3"></i>Belum ada produk
          </div>
        {% endif %}
      </div>
      <div class="card-footer p-2">
        <button onclick="newProduk()" class="btn btn-outline-success btn-sm w-100" style="font-size:.78rem">
          <i class="fas fa-plus me-1"></i>Produk Baru</button>
      </div>
    </div>
  </div>

  <!-- ── MAIN CALCULATOR ── -->
  <div class="hpp-main">

    <!-- Toolbar -->
    <div class="hpp-toolbar d-flex justify-content-between align-items-center mb-3 no-print flex-wrap gap-2">
      <p class="text-muted mb-0" style="font-size:.82rem;max-width:560px">
        Hitung HPP produk non-SKU, jasa, paket, atau menu FNB. Kolom <span style="color:var(--pgp);font-weight:700">hijau</span> otomatis dihitung.
        <span id="unsavedBadge">● Belum tersimpan</span>
      </p>
      <div class="d-flex gap-2">
        <button onclick="window.print()" class="btn btn-outline-secondary btn-sm">
          <i class="fas fa-print me-1"></i>Cetak</button>
        <button onclick="resetKalkulator()" class="btn btn-outline-danger btn-sm">
          <i class="fas fa-rotate-left me-1"></i>Reset</button>
        <button onclick="simpanProduk()" class="btn btn-primary btn-sm" id="btnSimpan">
          <i class="fas fa-save me-1"></i>Simpan</button>
      </div>
    </div>

    <!-- Info Produk + Summary -->
    <div class="card mb-3">
      <div class="card-header">
        <span class="section-title"><i class="fas fa-tag me-2" style="color:#15803d"></i>Info Produk</span>
      </div>
      <div class="card-body pb-3">
        <div class="row g-3 align-items-end">
          <div class="col-md-3">
            <label class="form-label small fw-semibold mb-1">Nama Menu / Produk</label>
            <input type="text" id="namaMenu" class="form-control" placeholder="contoh: Americano"
                   oninput="markUnsaved()">
          </div>
          <div class="col-md-2">
            <label class="form-label small fw-semibold mb-1">Jenis</label>
            <select id="jenisProduk" class="form-select" onchange="markUnsaved()">
              <option value="FNB_MENU">FNB / Menu</option>
              <option value="JASA">Jasa</option>
              <option value="PAKET">Paket</option>
              <option value="NON_SKU">Non-SKU</option>
            </select>
          </div>
          <div class="col-md-2">
            <label class="form-label small fw-semibold mb-1">Satuan Jual</label>
            <input type="text" id="satuanProduk" class="form-control" value="porsi"
                   placeholder="porsi / jam / paket" oninput="markUnsaved()">
          </div>
          <div class="col-md-2">
            <label class="form-label small fw-semibold mb-1">Harga Jual (Rp)</label>
            <input type="number" id="hargaJual" class="form-control text-end" placeholder="0"
                   min="0" step="500" oninput="hitungSemua();markUnsaved()">
          </div>
          <div class="col-md-5">
            <div class="d-flex gap-2 flex-wrap">
              <div class="summary-box" style="background:var(--pg);border:1px solid var(--pgb)">
                <div class="lbl" style="color:var(--pgt)">Total HPP</div>
                <div class="val text-rp" id="sumHPP" style="color:var(--pgt)">Rp0</div>
                <div style="font-size:.66rem;color:var(--pgp);margin-top:.1rem" id="sumHPPpct">dari harga jual</div>
              </div>
              <div class="summary-box" style="background:var(--csbg);border:1px solid var(--pbb)">
                <div class="lbl" style="color:var(--csl)">Keuntungan / Produk</div>
                <div class="val text-rp" id="sumUntung" style="color:var(--csv)">Rp0</div>
                <div style="font-size:.66rem;color:var(--tx3);margin-top:.1rem">Harga jual − Total HPP</div>
              </div>
              <div class="summary-box" style="background:var(--pp);border:1px solid var(--ppb)">
                <div class="lbl" style="color:var(--ppt)">Gross Profit Margin</div>
                <div class="val" id="sumGPM" style="color:var(--ppt)">-</div>
                <div style="font-size:.66rem;color:var(--tx3);margin-top:.1rem">Keuntungan ÷ Harga jual</div>
              </div>
            </div>
          </div>
        </div>
      </div>
    </div>

    <!-- Tabel Bahan -->
    <div class="card">
      <div class="card-header d-flex justify-content-between align-items-center">
        <span class="section-title">
          <i class="fas fa-list-ul me-2" style="color:#15803d"></i>Daftar Bahan
        </span>
        <button onclick="tambahBaris()" class="btn btn-success btn-sm no-print">
          <i class="fas fa-plus me-1"></i>Tambah Bahan</button>
      </div>
      <div class="card-body p-0">
        <div class="table-responsive">
          <table class="table table-sm hpp-table mb-0" id="tblBahan">
            <colgroup>
              <col style="width:30px">
              <col style="width:220px">
              <col style="width:140px">
              <col style="width:110px">
              <col style="width:125px">
              <col style="width:110px">
              <col style="width:125px">
              <col style="width:112px">
              <col style="width:125px">
              <col style="width:220px">
              <col style="width:135px">
              <col style="width:34px">
            </colgroup>
            <thead class="table-light">
              <tr>
                <th class="ps-3">#</th>
                <th>Rincian</th>
                <th class="text-end">Harga pembelian</th>
                <th>Satuan beli</th>
                <th class="text-end">Frekuensi pakai</th>
                <th>Satuan pakai</th>
                <th class="text-end">Takaran / produksi</th>
                <th class="text-end" style="color:var(--pgp)">
                  <i class="fas fa-lock fa-xs me-1 col-auto-dim"></i>Harga per takar</th>
                <th class="text-end" style="color:var(--pgp)">
                  <i class="fas fa-lock fa-xs me-1 col-auto-dim"></i>HPP / produksi</th>
                <th>Vendor</th>
                <th>Domisili</th>
                <th class="no-print"></th>
              </tr>
            </thead>
            <tbody id="bodyBahan"></tbody>
            <tfoot>
              <tr>
                <td colspan="7" class="text-end pe-3" style="font-size:.78rem;font-weight:700;color:var(--tx2)">Total HPP</td>
                <td class="text-end pe-2">
                  <span id="footHargaTakar" class="col-auto-dim" style="font-size:.7rem"></span>
                </td>
                <td class="text-end pe-2">
                  <span id="footTotalHPP" class="col-auto text-rp">Rp0</span>
                </td>
                <td colspan="3"></td>
              </tr>
            </tfoot>
          </table>
        </div>
      </div>
    </div>

    <!-- Rumus hint -->
    <div class="mt-3 px-1 no-print">
      <div class="d-flex gap-3 flex-wrap" style="font-size:.72rem;color:var(--tx3)">
        <span><i class="fas fa-circle-info me-1" style="color:#15803d"></i>
          <b>Harga per takar</b> = Harga pembelian ÷ Frekuensi pemakaian</span>
        <span><i class="fas fa-circle-info me-1" style="color:#15803d"></i>
          <b>HPP / produksi</b> = Harga per takar × Takaran per produksi</span>
        <span><i class="fas fa-circle-info me-1" style="color:#7c3aed"></i>
          <b>GPM</b> = (Harga jual − Total HPP) ÷ Harga jual × 100%</span>
      </div>
    </div>

  </div><!-- /.hpp-main -->
</div><!-- /.hpp-wrap -->

{% endblock %}

{% block scripts %}
<script>
let rowCount  = 0;
let currentId = null;   // ID produk aktif (null = baru)
let unsaved   = false;

function fmtRp(v){
  // Format kompak "Rp50.000" (tanpa spasi). Panggil global helper dari base.html.
  var n = Number(v || 0);
  if(!isFinite(n)) n = 0;
  if(window.rpFmt && window.rpFmt !== fmtRp){
    return window.rpFmt(n).replace('Rp ', 'Rp');
  }
  return 'Rp' + Math.round(n).toLocaleString('id-ID');
}
function rv(el){
  return window.numVal ? window.numVal(el)
    : (parseFloat((el.value||'').replace(/\./g,'').replace(',','.')) || 0);
}

/* ── Unsaved marker ── */
function markUnsaved(){
  unsaved = true;
  document.getElementById('unsavedBadge').style.display = 'inline';
}
function clearUnsaved(){
  unsaved = false;
  document.getElementById('unsavedBadge').style.display = 'none';
}

/* ── Sidebar active highlight ── */
function setActive(id){
  document.querySelectorAll('.prod-item').forEach(el => el.classList.remove('active'));
  if(id){
    const el = document.getElementById('pi-' + id);
    if(el) el.classList.add('active');
  }
}

/* ── Add row ── */
function tambahBaris(data){
  data = data || {};
  rowCount++;
  const id = 'row-' + rowCount;
  const tbody = document.getElementById('bodyBahan');
  const tr = document.createElement('tr');
  tr.id = id;
  tr.innerHTML = `
    <td class="ps-3 text-muted" style="font-size:.76rem">${rowCount}</td>
    <td><input type="text" class="form-control form-control-sm f-bahan"
        placeholder="nama bahan..." value="${esc(data.bahan||'')}" oninput="markUnsaved()"></td>
    <td><input type="number" class="form-control form-control-sm f-harga"
        min="0" step="100" placeholder="0" value="${data.harga||''}"
        oninput="hitungBaris(this);markUnsaved()"></td>
    <td><input type="text" class="form-control form-control-sm f-satbeli"
        placeholder="pcs / kg / liter" value="${esc(data.satbeli||'')}" oninput="markUnsaved()"></td>
    <td><input type="number" class="form-control form-control-sm f-frekuensi"
        min="0" step="0.001" placeholder="0" value="${data.frekuensi||''}"
        oninput="hitungBaris(this);markUnsaved()"></td>
    <td><input type="text" class="form-control form-control-sm f-satpakai"
        placeholder="sdt / ml / pcs" value="${esc(data.satpakai||'')}" oninput="markUnsaved()"></td>
    <td><input type="number" class="form-control form-control-sm f-takaran"
        min="0" step="0.001" placeholder="0" value="${data.takaran||''}"
        oninput="hitungBaris(this);markUnsaved()"></td>
    <td class="text-end pe-2"><span class="col-auto r-takar">Rp0</span></td>
    <td class="text-end pe-2"><span class="col-auto r-hpp">Rp0</span></td>
    <td><input type="text" class="form-control form-control-sm f-vendor"
        placeholder="nama / no. hp..." value="${esc(data.vendor||'')}" oninput="markUnsaved()"></td>
    <td><input type="text" class="form-control form-control-sm f-domisili"
        placeholder="kota..." value="${esc(data.domisili||'')}" oninput="markUnsaved()"></td>
    <td class="text-center no-print">
      <button class="btn btn-xs btn-outline-danger px-1 py-0"
              onclick="hapusBaris('${id}')" title="Hapus">
        <i class="fas fa-times" style="font-size:.68rem"></i></button>
    </td>`;
  tbody.appendChild(tr);
  if(window.numFmtInitAll) window.numFmtInitAll();
  if(data.harga || data.frekuensi || data.takaran) hitungBaris(tr.querySelector('.f-harga'));
  hitungSemua();
  return tr;
}

function esc(s){ return String(s).replace(/"/g,'&quot;'); }

function hapusBaris(id){
  const el = document.getElementById(id);
  if(el){ el.remove(); markUnsaved(); }
  renumber(); hitungSemua();
}

function renumber(){
  document.querySelectorAll('#bodyBahan tr').forEach((tr, i) => {
    tr.querySelector('td:first-child').textContent = i + 1;
  });
}

function hitungBaris(el){
  const tr = el.closest('tr');
  const harga     = rv(tr.querySelector('.f-harga'));
  const frekuensi = rv(tr.querySelector('.f-frekuensi'));
  const takaran   = rv(tr.querySelector('.f-takaran'));
  const hargaTakar = frekuensi > 0 ? harga / frekuensi : 0;
  const hpp        = hargaTakar * takaran;
  tr.querySelector('.r-takar').textContent = fmtRp(hargaTakar);
  tr.querySelector('.r-hpp').textContent   = fmtRp(hpp);
  const zero = hpp === 0;
  tr.querySelector('.r-takar').style.opacity = zero ? '.3' : '1';
  tr.querySelector('.r-hpp').style.opacity   = zero ? '.3' : '1';
  hitungSemua();
}

function hitungSemua(){
  let totalHPP = 0;
  document.querySelectorAll('#bodyBahan tr').forEach(tr => {
    const harga     = rv(tr.querySelector('.f-harga'));
    const frekuensi = rv(tr.querySelector('.f-frekuensi'));
    const takaran   = rv(tr.querySelector('.f-takaran'));
    if(frekuensi > 0) totalHPP += (harga / frekuensi) * takaran;
  });
  const hargaJual  = rv(document.getElementById('hargaJual'));
  const keuntungan = hargaJual - totalHPP;
  const gpm        = hargaJual > 0 ? (keuntungan / hargaJual * 100) : null;
  const hppPct     = hargaJual > 0
    ? (totalHPP / hargaJual * 100).toFixed(1) + '% dari harga jual'
    : 'dari harga jual';

  document.getElementById('sumHPP').textContent       = fmtRp(totalHPP);
  document.getElementById('sumHPPpct').textContent    = hppPct;
  document.getElementById('sumUntung').textContent    = fmtRp(keuntungan);
  document.getElementById('footTotalHPP').textContent = fmtRp(totalHPP);
  document.getElementById('sumUntung').style.color    = keuntungan >= 0 ? '' : '#dc2626';

  const gpmEl = document.getElementById('sumGPM');
  if(gpm !== null){
    gpmEl.textContent = gpm.toFixed(2) + '%';
    gpmEl.style.color = gpm >= 30 ? '' : gpm >= 0 ? '#d97706' : '#dc2626';
  } else { gpmEl.textContent = '-'; gpmEl.style.color = ''; }
}

/* ── Load produk dari server ── */
function loadProduk(id){
  if(unsaved && !confirm('Ada perubahan belum disimpan. Lanjut?')) return;
  fetch('/api/hpp-produk/' + id)
    .then(r => r.json())
    .then(p => {
      currentId = p.id;
      document.getElementById('namaMenu').value  = p.nama;
      document.getElementById('jenisProduk').value = p.jenis || 'FNB_MENU';
      document.getElementById('satuanProduk').value = p.satuan || 'porsi';
      window.numFmtSet(document.getElementById('hargaJual'), p.harga_jual || '');
      document.getElementById('bodyBahan').innerHTML = '';
      rowCount = 0;
      (p.bahan || []).forEach(b => tambahBaris(b));
      while(rowCount < 3) tambahBaris();
      hitungSemua();
      setActive(id);
      clearUnsaved();
    });
}

/* ── Produk baru (kosongkan kalkulator) ── */
function newProduk(){
  if(unsaved && !confirm('Ada perubahan belum disimpan. Lanjut?')) return;
  currentId = null;
  document.getElementById('namaMenu').value  = '';
  document.getElementById('jenisProduk').value = 'FNB_MENU';
  document.getElementById('satuanProduk').value = 'porsi';
  document.getElementById('hargaJual').value = '';
  document.getElementById('bodyBahan').innerHTML = '';
  rowCount = 0;
  for(let i = 0; i < 5; i++) tambahBaris();
  hitungSemua();
  setActive(null);
  clearUnsaved();
  document.getElementById('namaMenu').focus();
}

/* ── Simpan ke server ── */
function simpanProduk(){
  const nama = document.getElementById('namaMenu').value.trim();
  if(!nama){
    alert('Isi nama produk terlebih dahulu.');
    document.getElementById('namaMenu').focus();
    return;
  }
  const harga_jual = rv(document.getElementById('hargaJual'));
  const jenis = document.getElementById('jenisProduk').value;
  const satuan = document.getElementById('satuanProduk').value.trim() || 'porsi';
  const bahan = [];
  document.querySelectorAll('#bodyBahan tr').forEach(tr => {
    const b = tr.querySelector('.f-bahan').value.trim();
    const h = rv(tr.querySelector('.f-harga'));
    const f = rv(tr.querySelector('.f-frekuensi'));
    const t = rv(tr.querySelector('.f-takaran'));
    if(b || h || f || t){
      bahan.push({
        bahan:     b,
        tipe:      'BAHAN',
        harga:     h,
        satbeli:   tr.querySelector('.f-satbeli').value,
        frekuensi: f,
        satpakai:  tr.querySelector('.f-satpakai').value,
        takaran:   t,
        vendor:    tr.querySelector('.f-vendor').value,
        domisili:  tr.querySelector('.f-domisili').value,
      });
    }
  });

  const url    = currentId ? '/api/hpp-produk/' + currentId : '/api/hpp-produk';
  const method = currentId ? 'PUT' : 'POST';

  fetch(url, {
    method,
    headers: {'Content-Type': 'application/json'},
    body: JSON.stringify({ nama, jenis, satuan, harga_jual, bahan })
  })
    .then(r => r.json())
    .then(res => {
      if(res.error){ alert(res.error); return; }
      currentId = res.id;
      clearUnsaved();
      refreshSidebar();
    });
}

/* ── Hapus produk ── */
function deleteProduk(id, btnEl){
  const nama = btnEl.closest('.prod-item').querySelector('.prod-nama').textContent;
  if(!confirm('Hapus produk "' + nama + '"?')) return;
  fetch('/api/hpp-produk/' + id, { method: 'DELETE' })
    .then(r => r.json())
    .then(() => {
      const el = document.getElementById('pi-' + id);
      if(el) el.remove();
      if(currentId === id){ currentId = null; clearUnsaved(); }
      checkEmpty();
    });
}

/* ── Refresh sidebar list via API ── */
function refreshSidebar(){
  fetch('/api/hpp-produk')
    .then(r => r.json())
    .then(list => {
      const container = document.getElementById('sidebarList');
      if(!list.length){
        container.innerHTML = '<div class="text-center py-3 text-muted" style="font-size:.78rem"><i class="fas fa-inbox d-block mb-1" style="font-size:1.2rem;opacity:.3"></i>Belum ada produk</div>';
        return;
      }
      container.innerHTML = list.map(p => `
        <div class="prod-item${currentId===p.id?' active':''}" id="pi-${p.id}"
             onclick="loadProduk(${p.id})" data-id="${p.id}">
          <div style="flex:1;min-width:0">
            <div class="prod-nama">${p.nama}</div>
            <div class="prod-meta">${String(p.jenis||'FNB_MENU').replace('_',' ')} · Jual ${fmtRp(p.harga_jual)} · HPP ${fmtRp(p.total_hpp)}</div>
          </div>
          <span class="prod-del" onclick="event.stopPropagation();deleteProduk(${p.id},this)" title="Hapus">
            <i class="fas fa-times"></i></span>
        </div>`).join('');
    });
}

function checkEmpty(){
  const c = document.getElementById('sidebarList');
  if(!c.querySelector('.prod-item'))
    c.innerHTML = '<div class="text-center py-3 text-muted" style="font-size:.78rem"><i class="fas fa-inbox d-block mb-1" style="font-size:1.2rem;opacity:.3"></i>Belum ada produk</div>';
}

function resetKalkulator(){
  if(!confirm('Reset semua data kalkulator?')) return;
  newProduk();
}

/* ── Init: 5 baris kosong ── */
for(let i = 0; i < 5; i++) tambahBaris();
document.addEventListener('DOMContentLoaded', function(){ hitungSemua(); });
</script>
{% endblock %}