(function(){

// ——— TABELAS ANUAIS IRPF ———

// DIRPF 2026 (exercicio 2026, ano-calendario 2025)
// Fonte: gov.br/receitafederal — Tributacao de 2025
var T26={
  f:[
    {ate:28467.20,a:0,d:0},
    {ate:33919.80,a:.075,d:2135.04},
    {ate:45012.60,a:.15,d:4679.03},
    {ate:55976.16,a:.225,d:8054.97},
    {ate:1e15,a:.275,d:10853.78}
  ],
  ds:16754.34,
  dd:2275.08,
  red:false
};

// DIRPF 2027 (exercicio 2027, ano-calendario 2026)
// Fonte: gov.br/receitafederal — Tributacao de 2026
// Inclui reducao Lei 15.270/2025
var T27={
  f:[
    {ate:29145.60,a:0,d:0},
    {ate:33919.80,a:.075,d:2185.92},
    {ate:45012.60,a:.15,d:4729.91},
    {ate:55976.16,a:.225,d:8105.85},
    {ate:1e15,a:.275,d:10904.66}
  ],
  ds:17640.00,
  dd:2275.08,
  red:true,
  rLi:60000,
  rLr:88200
};

var ndep=0,anoDecSel=0;
function getTab(){return anoDecSel>=2027?T27:T26}

// ——— ROTACAO DE ANOS ———
function buildYearOptions(){
  var c=document.getElementById('sim-year-row');
  if(!c)return;
  var cy=new Date().getFullYear();
  if(anoDecSel===0)anoDecSel=cy;
  c.innerHTML='';
  [cy,cy+1].forEach(function(ano){
    var b=document.createElement('button');
    b.className='sim-year-btn'+(anoDecSel===ano?' active':'');
    b.innerHTML=
      '<span class="ano">'+ano+'</span>'+
      '<span class="ano-ref">renda de '+(ano-1)+'</span>'+
      (ano===cy?'<span class="ano-atual">declara\u00e7\u00e3o atual</span>':'');
    b.onclick=function(){
      anoDecSel=ano;
      c.querySelectorAll('.sim-year-btn').forEach(function(x){x.classList.remove('active')});
      b.classList.add('active');
    };
    c.appendChild(b);
  });
}

// ——— CALCULO ———
function calcTab(base,t){
  if(base<=0)return 0;
  for(var i=0;i<t.f.length;i++){
    if(base<=t.f[i].ate)return Math.max(0,base*t.f[i].a-t.f[i].d);
  }
  return 0;
}

function fmt(v){return'R$ '+v.toFixed(2).replace('.',',').replace(/\B(?=(\d{3})+(?!\d))/g,'.')}
function pct(v){var x=Math.floor(v*10000)/100;return x.toFixed(2).replace('.',',')+'%'}

// ——— CONTROLES ———
window.simDep=function(d){
  ndep=Math.max(0,Math.min(10,ndep+d));
  document.getElementById('sim-dep-count').textContent=ndep;
};

window.simFmt=function(el){
  var pos=el.selectionStart,len0=el.value.length;
  var v=el.value.replace(/[^\d,]/g,'');
  var p=v.split(','),ip=p[0].replace(/^0+/,'')||'0',dp=p.length>1?p[1].substring(0,2):null;
  var f=parseInt(ip||'0').toLocaleString('pt-BR');
  if(dp!==null)f+=','+dp;
  el.value=f;
  var diff=el.value.length-len0;
  el.setSelectionRange(pos+diff,pos+diff);
};

window.simFocusRaw=function(el){
  var v=el.value.replace(/\./g,'').replace(',','.');
  el.value=(v==='0'||v==='0.00'||v==='')?'':v;
  setTimeout(function(){el.select()},0);
};

window.simBlur=function(el){
  var v=el.value.replace(/\./g,'').replace(',','.');
  var n=parseFloat(v);
  if(isNaN(n)||v==='')el.value='';
  else el.value=n.toLocaleString('pt-BR',{minimumFractionDigits:2,maximumFractionDigits:2});
};

function gVal(){
  var v=document.getElementById('sim-valor').value.replace(/\./g,'').replace(',','.');
  return parseFloat(v)||0;
}

// ——— CALCULAR ———
window.simCalc=function(){
  var rm=gVal();
  if(rm<=0){alert('Informe a renda mensal para continuar.');return}

  var t=getTab();
  var ra=rm*12;

  // Desconto simplificado: 20% da renda anual, limitado ao teto do ano
  var ds=Math.min(ra*0.20,t.ds);

  // Deducao por dependentes (anual)
  var dd=ndep*t.dd;

  // Base de calculo anual
  var ba=Math.max(0,ra-ds-dd);

  // Imposto pela tabela progressiva anual
  var impTab=calcTab(ba,t);

  // Reducao Lei 15.270/2025 (DIRPF 2027+)
  var red=0;
  if(t.red){
    if(ra<=t.rLi){
      red=impTab;
    } else if(ra<=t.rLr){
      var fator=(t.rLr-ra)/(t.rLr-t.rLi);
      red=Math.max(0,impTab*fator);
    }
  }

  var imp=Math.max(0,Math.round((impTab-red)*100)/100);
  var isento=(imp===0);
  var ef=ra>0?imp/ra:0;

  // Faixa nominal
  var fn,fc;
  if(ba<=t.f[0].ate){fn='Isento';fc='faixa-isento'}
  else if(ba<=t.f[1].ate){fn='7,5%';fc='faixa-7'}
  else if(ba<=t.f[2].ate){fn='15%';fc='faixa-15'}
  else if(ba<=t.f[3].ate){fn='22,5%';fc='faixa-22'}
  else{fn='27,5%';fc='faixa-27'}

  if(isento){
    fc='faixa-isento';
    if(ba<=t.f[0].ate)fn='Isento (tabela)';
    else if(t.red)fn='Isento (Lei 15.270/2025)';
  }

  // Motivo isencao
  var mi='';
  if(isento){
    if(ba<=t.f[0].ate){
      mi='Base de c\u00e1lculo abaixo do limite de isen\u00e7\u00e3o da tabela progressiva.';
    } else if(t.red){
      mi='Redu\u00e7\u00e3o da Lei 15.270/2025 \u2014 rendimentos at\u00e9 R$ 5.000/m\u00eas resultam em imposto zero.';
    }
  }

  // Parcelamento
  var ph='';
  if(!isento){
    var mp=Math.min(8,Math.floor(imp/50));
    if(mp<1)mp=1;
    if(imp<100){
      ph='<p>Pagamento em cota \u00fanica &mdash; vencimento <strong>30/04/'+anoDecSel+'</strong></p>';
    } else if(mp>1){
      ph='<p>Pode parcelar em at\u00e9 <strong>'+mp+'x</strong> de <strong>'+fmt(imp/mp)+'</strong> via d\u00e9bito em conta<br>1\u00aa cota at\u00e9 30/04/'+anoDecSel+'</p>';
    } else {
      ph='<p>Pagamento em cota \u00fanica &mdash; vencimento <strong>30/04/'+anoDecSel+'</strong></p>';
    }
  }

  // ——— RENDERIZA ———
  var hi=document.getElementById('sim-hero-imposto');
  var he=document.getElementById('sim-hero-isento');
  if(hi)hi.style.display=isento?'none':'block';
  if(he)he.style.display=isento?'block':'none';

  if(!isento){
    var vn=document.getElementById('sim-val-num');
    if(vn)vn.textContent=fmt(imp).replace('R$ ','');
    var pb=document.getElementById('sim-parcelas-box');
    if(pb)pb.innerHTML=ph;
  }

  var im=document.getElementById('sim-isencao-motivo');
  if(im)im.textContent=mi;

  function s(id,v){var e=document.getElementById(id);if(e)e.textContent=v}
  function sh(id,v){var e=document.getElementById(id);if(e)e.innerHTML=v}

  s('sim-r-bruto',fmt(ra));
  s('sim-r-desc','- '+fmt(ds));
  var rd=document.getElementById('sim-row-dep');
  if(rd)rd.style.display=ndep>0?'flex':'none';
  s('sim-r-dep','- '+fmt(dd)+' ('+ndep+' dep.)');
  s('sim-r-base',fmt(ba));
  sh('sim-r-faixa','<span class="sim-faixa '+fc+'">'+fn+'</span>');
  s('sim-r-imposto',fmt(imp));
  s('sim-r-efetiva',isento?'0,00%':pct(ef));
  s('sim-r-mensal',fmt(imp/12)+'/m\u00eas');

  var re=document.getElementById('sim-result');
  if(re)re.style.display='block';
  setTimeout(function(){
    var r=document.getElementById('sim-result');
    if(r)r.scrollIntoView({behavior:'smooth',block:'start'});
  },100);
};

// ——— INIT ———
function init(){buildYearOptions()}
if(document.readyState==='loading'){document.addEventListener('DOMContentLoaded',init)}
else{init()}

})();