:root{
  --accent:#e60026;
  --accent-dark:#b8001f;
  --bg:#f4f5f7;
  --panel-bg:#ffffff;
  --text:#1c1e21;
  --muted:#6b7280;
  --border:#e5e7eb;
  --success:#16a34a;
  --danger:#dc2626;
  --radius:10px;
  --shadow:0 2px 10px rgba(0,0,0,.08);
  --header-h:56px;
}
*{box-sizing:border-box;}
html,body{height:100%;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;}
button{font-family:inherit;cursor:pointer;}
input,select{font-family:inherit;}

.topbar{
  height:var(--header-h);
  background:#111318;
  color:#fff;
  display:flex;
  align-items:center;
  gap:12px;
  padding:0 14px;
  position:sticky;
  top:0;
  z-index:40;
}
.topbar .back-link{color:#cfd3da;text-decoration:none;font-size:14px;white-space:nowrap;}
.topbar .back-link:hover{color:#fff;}
.topbar .brand-title{font-weight:700;letter-spacing:.03em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar .brand-title small{display:block;font-weight:400;font-size:11px;color:#a9adb5;}
.topbar .spacer{flex:1;}
.cart-pill{
  background:var(--accent);color:#fff;border:none;border-radius:999px;
  padding:8px 14px;font-weight:600;font-size:13px;display:flex;align-items:center;gap:6px;
}
.cart-pill:hover{background:var(--accent-dark);}

.app-layout{display:flex;height:calc(100vh - var(--header-h));}
.viewer-col{flex:1;min-width:0;display:flex;flex-direction:column;background:#20232a;position:relative;}
.panel-col{width:380px;flex-shrink:0;background:var(--panel-bg);border-left:1px solid var(--border);display:flex;flex-direction:column;height:100%;}

.viewer-stage{flex:1;display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative;touch-action:pan-y;}
.viewer-stage img{max-width:100%;max-height:100%;object-fit:contain;user-select:none;box-shadow:0 4px 24px rgba(0,0,0,.35);background:#fff;}
.nav-arrow{
  position:absolute;top:50%;transform:translateY(-50%);background:rgba(255,255,255,.92);
  border:none;width:44px;height:44px;border-radius:50%;font-size:18px;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow);color:#111;z-index:5;
}
.nav-arrow:disabled{opacity:.25;cursor:default;}
.nav-arrow.prev{left:14px;}
.nav-arrow.next{right:14px;}
.viewer-toolbar{display:flex;align-items:center;justify-content:center;gap:10px;padding:10px;background:#15171c;color:#fff;flex-wrap:wrap;}
.viewer-toolbar button{background:#2b2f38;color:#fff;border:1px solid #3a3f4b;border-radius:8px;padding:6px 10px;font-size:13px;}
.viewer-toolbar button:hover{background:#3a3f4b;}
.page-jump{display:flex;align-items:center;gap:6px;font-size:13px;}
.page-jump input{width:52px;text-align:center;padding:5px;border-radius:6px;border:1px solid #3a3f4b;background:#1a1c22;color:#fff;}

.panel-header{padding:14px 16px 10px;border-bottom:1px solid var(--border);}
.panel-header h3{margin:0 0 8px;font-size:15px;}
.search-box{position:relative;}
.search-box input{width:100%;padding:9px 10px;border:1px solid var(--border);border-radius:8px;font-size:13px;}
.search-results{
  position:absolute;top:calc(100% + 4px);left:0;right:0;background:#fff;border:1px solid var(--border);
  border-radius:8px;box-shadow:var(--shadow);max-height:260px;overflow:auto;z-index:20;display:none;
}
.search-results.open{display:block;}
.search-results .sr-item{padding:8px 10px;border-bottom:1px solid var(--border);font-size:12.5px;display:flex;justify-content:space-between;gap:8px;cursor:pointer;}
.search-results .sr-item:hover{background:var(--bg);}
.search-results .sr-item .sr-name{color:var(--muted);}
.search-results .sr-empty{padding:10px;font-size:12.5px;color:var(--muted);}

.panel-list{flex:1;overflow-y:auto;padding:10px 12px;}
.panel-list .empty-state{color:var(--muted);font-size:13px;text-align:center;padding:30px 10px;}
.product-card{border:1px solid var(--border);border-radius:var(--radius);padding:10px 12px;margin-bottom:10px;background:#fff;}
.product-card .pc-top{display:flex;justify-content:space-between;gap:8px;margin-bottom:4px;}
.product-card .pc-code{font-size:11px;color:var(--muted);font-weight:600;letter-spacing:.02em;}
.product-card .pc-cat{font-size:10px;color:var(--accent);background:#fdecef;padding:2px 7px;border-radius:999px;white-space:nowrap;}
.product-card .pc-name{font-size:13px;line-height:1.3;margin:2px 0 6px;}
.product-card .pc-bottom{display:flex;align-items:center;justify-content:space-between;gap:8px;}
.product-card .pc-price{font-size:14px;font-weight:700;}
.product-card .pc-ipi{font-size:10.5px;color:var(--muted);font-weight:400;margin-left:4px;}
.qty-stepper{display:flex;align-items:center;border:1px solid var(--border);border-radius:8px;overflow:hidden;}
.qty-stepper button{background:var(--bg);border:none;width:26px;height:26px;font-size:14px;line-height:1;}
.qty-stepper button:hover{background:#e9eaee;}
.qty-stepper input{width:36px;text-align:center;border:none;font-size:13px;padding:0;height:26px;}
.pc-estimated{font-size:9.5px;color:#b45309;background:#fef3c7;border-radius:4px;padding:1px 5px;margin-left:6px;}

.panel-footer{border-top:1px solid var(--border);padding:12px 16px;display:flex;align-items:center;justify-content:space-between;gap:10px;}
.panel-footer .pf-total{font-size:13px;}
.panel-footer .pf-total strong{font-size:16px;}
.btn{border:none;border-radius:8px;padding:10px 16px;font-weight:600;font-size:13px;}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-dark);}
.btn-outline{background:#fff;border:1px solid var(--border);color:var(--text);}
.btn-outline:hover{background:var(--bg);}

.modal-overlay{position:fixed;inset:0;background:rgba(15,17,20,.55);display:none;align-items:center;justify-content:center;z-index:100;padding:20px;}
.modal-overlay.open{display:flex;}
.modal-box{background:#fff;border-radius:14px;width:100%;max-width:480px;max-height:85vh;display:flex;flex-direction:column;overflow:hidden;box-shadow:0 10px 40px rgba(0,0,0,.3);}
.modal-box.wide{max-width:820px;}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid var(--border);}
.modal-head h3{margin:0;font-size:16px;}
.modal-close{background:none;border:none;font-size:20px;color:var(--muted);}
.modal-body{padding:16px 18px;overflow-y:auto;}
.index-cat{display:flex;align-items:center;justify-content:space-between;padding:10px 4px;border-bottom:1px solid var(--border);cursor:pointer;font-size:13.5px;}
.index-cat:hover{color:var(--accent);}
.index-cat .count{font-size:11px;color:var(--muted);background:var(--bg);border-radius:999px;padding:2px 8px;}

.cart-form{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:16px;}
.cart-form .field{display:flex;flex-direction:column;gap:4px;}
.cart-form .field.full{grid-column:1 / -1;}
.cart-form label{font-size:11.5px;color:var(--muted);font-weight:600;}
.cart-form .cnpj-row{display:flex;gap:6px;}
.cart-form input{padding:9px 10px;border:1px solid var(--border);border-radius:8px;font-size:13px;width:100%;}
.cnpj-lookup-btn{border:1px solid var(--border);background:var(--bg);border-radius:8px;padding:0 12px;font-size:14px;}

table.cart-table{width:100%;border-collapse:collapse;font-size:12.5px;margin-bottom:10px;}
table.cart-table th{text-align:left;padding:7px 6px;border-bottom:2px solid var(--border);color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.03em;}
table.cart-table td{padding:7px 6px;border-bottom:1px solid var(--border);vertical-align:middle;}
table.cart-table td.num{text-align:right;white-space:nowrap;}
.row-remove{background:none;border:none;color:var(--danger);font-size:15px;}
.cart-empty{text-align:center;color:var(--muted);padding:30px 10px;font-size:13px;}
.cart-totals{display:flex;justify-content:flex-end;gap:24px;padding:10px 4px;border-top:2px solid var(--border);font-size:13px;}
.cart-totals strong{font-size:17px;}
.cart-actions{display:flex;flex-wrap:wrap;gap:8px;padding-top:14px;border-top:1px solid var(--border);margin-top:6px;}
.cart-actions button{flex:1;min-width:110px;}
.cart-actions .row2{display:flex;gap:8px;width:100%;margin-top:8px;}
.cart-actions .row2 button{flex:1;}

.mini-qty{display:flex;align-items:center;gap:4px;}
.mini-qty input{width:40px;text-align:center;padding:4px;border:1px solid var(--border);border-radius:6px;font-size:12px;}

.toast{
  position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:#111318;color:#fff;
  padding:10px 18px;border-radius:8px;font-size:13px;z-index:200;opacity:0;pointer-events:none;transition:opacity .2s;
}
.toast.show{opacity:1;}

@media (max-width: 900px){
  .app-layout{flex-direction:column;}
  .viewer-col{height:55vh;flex:none;}
  .panel-col{width:100%;height:45vh;border-left:none;border-top:1px solid var(--border);}
  .nav-arrow{width:38px;height:38px;font-size:16px;}
  .cart-form{grid-template-columns:1fr;}
  .modal-box{max-width:100%;}
  table.cart-table{font-size:11px;}
}

@media print{
  body *{visibility:hidden;}
  #printReport, #printReport *{visibility:visible;}
  #printReport{position:absolute;top:0;left:0;width:100%;padding:20px;}
}