:root{
  --ledger: #1B3A2F;
  --ledger-dark: #12281F;
  --paper: #FBFAF3;
  --paper-dim: #EFEBDD;
  --ink: #1F2420;
  --ink-soft: #5B6259;
  --amber: #D9A441;
  --amber-deep: #8A6A22;
  --coral: #E2572B;
  --coral-deep: #8F2E14;
  --line: #D9D4C2;
}
*{box-sizing:border-box;}
body{
  margin:0;
  background:var(--ledger-dark);
  font-family:'Inter',sans-serif;
  color:var(--ink);
  display:flex;
  justify-content:center;
  min-height:100vh;
}
#app{
  width:100%;
  max-width:420px;
  min-height:100vh;
  background:var(--paper);
  display:flex;
  flex-direction:column;
  position:relative;
}

header.top{
  background:var(--ledger);
  color:var(--paper);
  padding:22px 20px 18px;
}
header.top .eyebrow{
  font-family:'IBM Plex Mono',monospace;
  font-size:11px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--amber);
  margin:0 0 4px;
}
header.top h1{
  font-family:'Fraunces',serif;
  font-weight:600;
  font-size:26px;
  margin:0;
  line-height:1.15;
}
header.top .sub{
  font-size:13px;
  color:#C7D3CB;
  margin-top:6px;
}

.stats{
  display:flex;
  gap:10px;
  padding:14px 16px 0;
}
.stat{
  flex:1;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:10px;
  padding:10px 12px;
}
.stat .lbl{
  font-size:10.5px;
  text-transform:uppercase;
  letter-spacing:.08em;
  color:var(--ink-soft);
  font-family:'IBM Plex Mono',monospace;
}
.stat .val{
  font-family:'Fraunces',serif;
  font-size:19px;
  font-weight:600;
  margin-top:2px;
  color:var(--coral-deep); 
}

nav.tabs{
  display:flex;
  margin:16px 16px 0;
  border-bottom:1px solid var(--line);
}
nav.tabs button{
  flex:1;
  background:none;
  border:none;
  padding:10px 0 12px;
  font-family:'Inter',sans-serif;
  font-weight:500;
  font-size:13.5px;
  color:var(--ink-soft);
  border-bottom:2px solid transparent;
  cursor:pointer;
}
nav.tabs button.active{
  color:var(--ledger);
  border-bottom:2px solid var(--coral);
}

main{
  flex:1;
  padding:14px 16px 100px;
  overflow-y:auto;
}

.empty{
  text-align:center;
  padding:60px 20px;
  color:var(--ink-soft);
}
.empty .titulo{
  font-family:'Fraunces',serif;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  margin:0 0 4px;
}
.empty .hint{ font-size:12.5px; color:var(--ink-soft); margin:0; }

.product-card{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:12px;
  padding:12px 14px;
  margin-bottom:10px;
  display:flex;
  align-items:center;
  gap:12px;
}
.product-card .info{ flex:1; min-width:0; cursor:pointer; }
.product-card .name{
  font-weight:600;
  font-size:15px;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.product-card .meta{
  display:flex;
  gap:10px;
  margin-top:3px;
  font-family:'IBM Plex Mono',monospace;
  font-size:12px;
  color:var(--ink-soft);
}
.product-card .meta .price{ color:var(--amber-deep); font-weight:600; }
.product-card .meta .stock.low{ color:var(--coral-deep); font-weight:600; }
.product-card .actions{ display:flex; align-items:center; gap:6px; }
.product-card .qtd{ min-width:16px; text-align:center; font-weight:600; }

.qtybtn{
  width:30px; height:30px;
  border-radius:50%;
  border:1px solid var(--line);
  background:var(--paper-dim);
  font-size:16px;
  font-weight:600;
  color:var(--ledger);
  cursor:pointer;
  display:flex; align-items:center; justify-content:center;
}
.qtybtn:active{ transform:scale(0.94); }
.qtybtn.add{ background:var(--ledger); color:var(--paper); border-color:var(--ledger); }
.qtybtn:disabled{ opacity:0.4; }

.sellbtn{
  background:var(--coral);
  color:#fff;
  border:none;
  border-radius:20px;
  padding:8px 16px;
  font-weight:600;
  font-size:13.5px;
  font-family:'Inter',sans-serif;
  cursor:pointer;
}
.sellbtn:active{ transform:scale(0.97); }
.sellbtn:disabled{ background:var(--line); color:var(--ink-soft); cursor:not-allowed; }

.dica-venda{
  font-size:12.5px;
  color:var(--ink-soft);
  margin:0 0 12px;
  text-align:center;
}
.dica-venda strong{ color:var(--ledger); }

.fab{
  position:fixed;
  max-width:420px;
  margin:0 auto;
  left:0; right:0;
  bottom:96px;
  width:100%;
  pointer-events:none;
}
.fab button{
  pointer-events:auto;
  position:absolute;
  right:20px;
  bottom:0;
  width:52px; height:52px;
  border-radius:50%;
  background:var(--coral);
  color:#fff;
  border:none;
  font-size:26px;
  box-shadow:0 4px 12px rgba(143,46,20,0.35);
  cursor:pointer;
}

.cartbar{
  position:sticky;
  bottom:0;
  left:0; right:0;
  background:var(--ledger);
  color:var(--paper);
  padding:14px 16px;
  display:none;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.cartbar .left{ font-size:13px; color:#C7D3CB; }
.cartbar .total{
  font-family:'Fraunces',serif;
  font-size:19px;
  font-weight:600;
  color:var(--paper);
}
.cartbar button{
  background:var(--coral);
  color:#fff;
  border:none;
  border-radius:8px;
  padding:11px 20px;
  font-weight:600;
  font-size:14.5px;
  font-family:'Inter',sans-serif;
  cursor:pointer;
}

.modal-wrap{
  position:fixed; inset:0;
  background:rgba(18,40,31,0.55);
  display:flex; align-items:flex-end; justify-content:center;
  z-index:50;
}
.modal{
  width:100%; max-width:420px;
  background:var(--paper);
  border-radius:16px 16px 0 0;
  padding:20px 20px 26px;
  max-height:88vh;
  overflow-y:auto;
}
.modal h2{
  font-family:'Fraunces',serif;
  font-size:19px;
  margin:0 0 16px;
}
.field{ margin-bottom:14px; }
.field label{
  display:block;
  font-size:12px;
  text-transform:uppercase;
  letter-spacing:.06em;
  color:var(--ink-soft);
  margin-bottom:5px;
  font-family:'IBM Plex Mono',monospace;
}
.field input{
  width:100%;
  border:1px solid var(--line);
  border-radius:8px;
  padding:11px 12px;
  font-size:15px;
  font-family:'Inter',sans-serif;
  background:#fff;
}
.field input:focus{ outline:2px solid var(--amber); outline-offset:0; border-color:var(--amber); }
.row2{ display:flex; gap:10px; }
.row2 .field{ flex:1; }
.erro{
  color:var(--coral-deep);
  font-size:13px;
  margin:-6px 0 14px;
}
.modal-actions{ display:flex; gap:10px; margin-top:6px; }
.btn{
  flex:1;
  padding:12px 0;
  border-radius:8px;
  font-weight:600;
  font-size:14.5px;
  border:none;
  cursor:pointer;
  font-family:'Inter',sans-serif;
}
.btn.primary{ background:var(--ledger); color:var(--paper); }
.btn.danger{ background:none; color:var(--coral-deep); border:1px solid var(--coral); }
.btn.ghost{ background:none; color:var(--ink-soft); border:1px solid var(--line); }

.receipt{
  background:var(--paper);
  border-radius:16px 16px 0 0;
  width:100%; max-width:420px;
  padding:22px 22px 28px;
  max-height:88vh;
  overflow-y:auto;
  position:relative;
}
.receipt .rlabel{
  text-align:center;
  font-family:'IBM Plex Mono',monospace;
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--ink-soft);
}
.receipt h2{
  font-family:'Fraunces',serif;
  text-align:center;
  font-size:22px;
  margin:6px 0 2px;
}
.receipt .rdate{
  text-align:center;
  font-size:12px;
  color:var(--ink-soft);
  margin-bottom:16px;
}
.ritem{
  display:flex;
  justify-content:space-between;
  font-size:14px;
  padding:6px 0;
  border-bottom:1px dashed var(--line);
}
.ritem .qn{ color:var(--ink-soft); font-family:'IBM Plex Mono',monospace; font-size:12.5px; margin-right:6px;}
.rtotal{
  display:flex; justify-content:space-between;
  margin-top:14px; padding-top:14px;
  border-top:1px solid var(--ink);
  font-family:'Fraunces',serif;
  font-size:20px;
  font-weight:600;
}

.sale-row{
  display:flex; justify-content:space-between; align-items:center;
  padding:12px 0;
  border-bottom:1px solid var(--line);
}
.sale-row .d{ font-size:13px; color:var(--ink-soft); }
.sale-row .n{ font-size:13px; margin-top:2px; }
.sale-row .t{ font-family:'IBM Plex Mono',monospace; font-weight:600; color:var(--amber-deep); }

::-webkit-scrollbar{ width:0; }

/* ===== Layout para telas largas (PC) =====
   Abaixo de 760px o app continua ocupando a tela toda, como no celular.
   Acima disso, ganha moldura de "app" centralizada e aproveita o espaço
   extra com grade de produtos em vez de lista única. */
@media (min-width: 760px){
  body{ padding:32px 16px; align-items:flex-start; }
  #app{
    max-width:480px;
    min-height:auto;
    border-radius:20px;
    overflow:hidden;
    box-shadow:0 12px 40px rgba(0,0,0,0.35);
  }
  header.top{ border-radius:20px 20px 0 0; }
}

@media (min-width: 980px){
  #app{ max-width:900px; }
  main{ padding:14px 24px 24px; }
  .dica-venda{ grid-column:1 / -1; text-align:left; margin-bottom:4px; }
  main:has(.product-card){
    display:grid;
    grid-template-columns:repeat(2, 1fr);
    gap:10px;
    align-content:start;
  }
  .product-card{ margin-bottom:0; }
  .cartbar{ border-radius:0 0 20px 20px; }
}