:root{
  --bg:#f4f7fb;--panel:#fff;--text:#172033;--muted:#6b7485;--line:#e6eaf0;
  --primary:#2563eb;--primary2:#1d4ed8;--danger:#dc2626;--ok:#059669;--warn:#d97706;
  --shadow:0 10px 30px rgba(15,23,42,.07);--radius:16px
}
*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial;background:var(--bg);color:var(--text)}
button,input,select{font:inherit}.app{min-height:100vh;display:grid;grid-template-columns:238px 1fr}
.sidebar{background:#0b1220;color:#fff;padding:24px 16px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}
.brand{display:flex;gap:12px;align-items:center;padding:0 8px 25px}.brand-mark{width:48px;height:48px;border-radius:50%;background:#fff;display:grid;place-items:center;overflow:hidden;box-shadow:0 4px 14px rgba(0,0,0,.24)}.brand-mark img{width:100%;height:100%;object-fit:cover}.brand strong,.brand span{display:block}.brand span{font-size:12px;color:#8fa1bc;margin-top:3px}
nav{display:grid;gap:7px}.nav-btn{border:0;background:transparent;color:#aebbd0;padding:12px 14px;border-radius:10px;text-align:left;cursor:pointer;display:flex;gap:12px}.nav-btn:hover,.nav-btn.active{background:#17233a;color:#fff}.sidebar-foot{margin-top:auto;border-top:1px solid #23314a;padding:18px 10px 0}.sidebar-foot span,.sidebar-foot small{display:block}.sidebar-foot small{color:#8292ad;margin-top:4px}
main{padding:26px 30px 48px;min-width:0}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;gap:16px}.topbar h1{margin:0;font-size:28px}.topbar p{margin:5px 0 0;color:var(--muted)}.top-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
button,.file-label{border-radius:10px;padding:10px 14px;border:1px solid var(--line);cursor:pointer;background:#fff}.primary{background:var(--primary);color:#fff;border-color:var(--primary);font-weight:700}.primary:hover{background:var(--primary2)}.ghost{background:#fff;color:var(--text)}.wide{width:100%;padding:14px}.file-label input{display:none}
.view{display:none}.view.active{display:block}.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-bottom:18px}.stat{background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:var(--radius);padding:18px}.stat span{font-size:13px;color:var(--muted)}.stat strong{display:block;font-size:25px;margin-top:8px}.stat small{color:var(--muted)}
.grid.two{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}.card{background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:var(--radius);padding:20px}.card-head{display:flex;justify-content:space-between;gap:15px;align-items:center;margin-bottom:18px}.card-head h2{margin:0;font-size:18px}.card-head p{margin:5px 0 0;color:var(--muted);font-size:13px}
.pos-layout{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(340px,.75fr);gap:18px}.search{width:330px;max-width:45vw}.product-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.product-card{border:1px solid var(--line);border-radius:14px;padding:14px;cursor:pointer;transition:.18s;background:#fff}.product-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:#b9cbfa}.product-card h3{font-size:15px;margin:8px 0 4px}.product-card p{font-size:12px;color:var(--muted);margin:0}.product-card .price{font-weight:800;color:var(--primary);margin-top:10px}.badge{display:inline-flex;padding:4px 8px;border-radius:999px;background:#eef4ff;color:#315ca8;font-size:11px}.badge.low{background:#fff1e7;color:#a9510a}.badge.ok{background:#e9fbf3;color:#067352}
.cart-card{position:sticky;top:20px;height:max-content}.field-row,.discount-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}.cart-items{margin:15px 0;max-height:330px;overflow:auto}.cart-item{padding:12px 0;border-bottom:1px solid var(--line)}.cart-item-top{display:flex;justify-content:space-between;gap:10px}.cart-item small{color:var(--muted)}.qty{display:flex;align-items:center;gap:8px;margin-top:8px}.qty button{padding:4px 9px}.remove{color:var(--danger);border:0;background:none;padding:0}.link-danger{border:0;background:none;color:var(--danger);padding:0}.totals{border-top:1px solid var(--line);padding:13px 0}.totals div{display:flex;justify-content:space-between;padding:5px 0}.totals .grand{font-size:19px;font-weight:800;border-top:1px dashed var(--line);margin-top:7px;padding-top:12px}
label{display:grid;gap:6px;font-size:13px;color:var(--muted)}input,select{border:1px solid #d9dee7;border-radius:9px;padding:10px;background:#fff;color:var(--text);width:100%}input:focus,select:focus{outline:2px solid #dbe7ff;border-color:#8aacf4}
.table-wrap{overflow:auto}table{border-collapse:collapse;width:100%}th,td{text-align:left;padding:12px;border-bottom:1px solid var(--line);font-size:13px;white-space:nowrap}th{color:var(--muted);font-weight:600;background:#fafbfd}td strong{display:block}.muted{color:var(--muted)}.actions{display:flex;gap:6px}.actions button{padding:6px 9px}.empty{padding:30px;text-align:center;color:var(--muted)}
.list-row{display:flex;justify-content:space-between;gap:14px;padding:11px 0;border-bottom:1px solid var(--line)}.list-row:last-child{border:0}.list-row small{display:block;color:var(--muted);margin-top:3px}.money{font-weight:800}.negative{color:var(--danger)}
.modal{position:fixed;inset:0;background:rgba(2,6,23,.66);display:none;place-items:center;padding:20px;z-index:320}.modal.open{display:grid}.modal-box{background:#fff;border-radius:18px;width:min(680px,96vw);max-height:90vh;overflow:auto;box-shadow:0 20px 80px rgba(0,0,0,.25)}.modal-head{display:flex;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line)}.modal-head h2{margin:0}.modal-head button{border:0;font-size:24px;padding:0}.modal-body,.modal-box form{padding:20px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.form-grid button{grid-column:1/-1}.presentation-editor{border:1px solid var(--line);border-radius:12px;padding:12px;grid-column:1/-1}.presentation-row{display:grid;grid-template-columns:1.1fr .7fr .8fr auto;gap:8px;margin:8px 0}
.toast{position:fixed;right:24px;bottom:24px;background:#0f172a;color:white;padding:13px 18px;border-radius:10px;opacity:0;transform:translateY(12px);pointer-events:none;transition:.2s;z-index:50}.toast.show{opacity:1;transform:none}
@media(max-width:1000px){.app{grid-template-columns:78px 1fr}.brand div:last-child,.nav-btn span,.sidebar-foot{display:none}.brand{padding-left:0}.brand-mark{margin:auto}.nav-btn{justify-content:center;font-size:18px}.stats{grid-template-columns:1fr 1fr}.grid.two,.pos-layout{grid-template-columns:1fr}.cart-card{position:static}.product-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){main{padding:18px 12px 90px}.app{display:block}.sidebar{position:fixed;z-index:20;bottom:0;top:auto;height:66px;width:100%;padding:8px;background:#0b1220}.brand,.sidebar-foot{display:none}nav{display:flex;justify-content:space-around}.nav-btn{padding:12px}.nav-btn:nth-child(n+6){display:none}.topbar{align-items:flex-start}.top-actions .ghost,.file-label{display:none}.stats{grid-template-columns:1fr 1fr;gap:10px}.stat{padding:14px}.stat strong{font-size:20px}.product-grid{grid-template-columns:1fr 1fr}.search{width:100%;max-width:none}.card-head{align-items:flex-start;flex-direction:column}.field-row,.discount-row,.form-grid{grid-template-columns:1fr}.presentation-row{grid-template-columns:1fr 1fr}.topbar h1{font-size:23px}}
@media print{body>*{display:none!important}#printArea{display:block!important}}

.system-footer{margin-top:24px;padding:14px 18px;text-align:center;color:var(--muted);font-size:12px;border-top:1px solid var(--line)}
.system-footer strong{color:var(--text)}

.receipt-preview{position:fixed;inset:0;background:rgba(2,6,23,.72);z-index:100;display:none;place-items:center;padding:14px}
.receipt-preview.open{display:grid}.receipt-preview-box{width:min(520px,100%);height:min(92vh,820px);background:#fff;border-radius:18px;display:grid;grid-template-rows:auto 1fr auto;overflow:hidden;box-shadow:0 25px 90px rgba(0,0,0,.35)}
.receipt-preview-head{display:flex;align-items:center;justify-content:space-between;padding:15px 18px;border-bottom:1px solid var(--line)}
.receipt-preview-head h2{font-size:18px;margin:0}.receipt-preview-head p{font-size:12px;color:var(--muted);margin:3px 0 0}.receipt-close{border:0;background:none;font-size:28px;padding:0 6px}
.receipt-preview-body{background:#e9edf3;padding:16px;overflow:auto;display:flex;justify-content:center}.receipt-preview-body iframe{width:80mm;min-height:650px;height:100%;background:#fff;border:0;box-shadow:0 4px 20px rgba(15,23,42,.16)}
.receipt-preview-actions{display:flex;justify-content:flex-end;gap:9px;padding:13px 16px;border-top:1px solid var(--line);background:#fff}
@media(max-width:640px){.receipt-preview{padding:0}.receipt-preview-box{height:100vh;width:100%;border-radius:0}.receipt-preview-body{padding:8px}.receipt-preview-actions{justify-content:stretch}.receipt-preview-actions button{flex:1;padding:11px 6px;font-size:12px}}

.payment-modal{position:fixed;inset:0;background:rgba(2,6,23,.6);display:none;place-items:center;padding:18px;z-index:80}
.payment-modal.open{display:grid}
.payment-box{width:min(430px,96vw);background:#fff;border-radius:18px;box-shadow:0 25px 80px rgba(0,0,0,.3);overflow:hidden}
.payment-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start;padding:18px 20px;border-bottom:1px solid var(--line)}
.payment-head h2{margin:0;font-size:20px}.payment-head p{margin:4px 0 0;color:var(--muted);font-size:13px}
.payment-head button{border:0;background:transparent;font-size:26px;line-height:1;padding:0}
.payment-body{padding:20px;display:grid;gap:14px}
.payment-total,.change-box{display:flex;justify-content:space-between;align-items:center;border-radius:14px;padding:16px;background:#f6f8fc;border:1px solid var(--line)}
.payment-total span,.change-box span{color:var(--muted)}
.payment-total strong{font-size:26px;color:var(--primary)}
.change-box strong{font-size:24px;color:var(--ok)}
.quick-money{display:grid;grid-template-columns:repeat(5,1fr);gap:7px}
.quick-money button{padding:9px 4px;font-size:12px}
.payment-error{min-height:18px;color:var(--danger);font-size:13px;text-align:center}
.payment-actions{display:flex;justify-content:flex-end;gap:10px;padding:16px 20px;border-top:1px solid var(--line)}
@media(max-width:520px){.quick-money{grid-template-columns:repeat(3,1fr)}}


.dashboard-charts{margin-top:18px}
.bar-chart{display:grid;gap:12px;min-height:210px;align-content:center}
.bar-row{display:grid;grid-template-columns:92px 1fr 78px;gap:10px;align-items:center;font-size:12px}
.bar-label{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--muted)}
.bar-track{height:12px;background:#edf1f7;border-radius:999px;overflow:hidden}
.bar-fill{height:100%;background:linear-gradient(90deg,var(--primary),#22c55e);border-radius:999px;min-width:3px}
.bar-value{text-align:right;font-weight:800}
.compact-select{width:auto;min-width:150px}
.report-card{margin-top:18px}
.report-actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.metric-positive{color:var(--ok)}
.metric-warning{color:var(--warn)}
.kardex-in{color:var(--ok);font-weight:800}
.kardex-out{color:var(--danger);font-weight:800}
.payment-progress{display:grid;gap:11px}
.payment-line{display:grid;grid-template-columns:100px 1fr 84px;gap:10px;align-items:center}
.payment-line .bar-track{height:10px}
@media(max-width:640px){
 .bar-row{grid-template-columns:72px 1fr 62px}
 .payment-line{grid-template-columns:76px 1fr 68px}
 .report-actions{width:100%}.compact-select{width:100%}
}


.purchase-box{width:min(880px,97vw)}
.purchase-form-grid{grid-template-columns:repeat(4,1fr)}
.purchase-item-editor{border:1px solid var(--line);border-radius:14px;padding:12px}
.purchase-item-controls{display:grid;grid-template-columns:1.4fr 1fr .6fr .8fr auto;gap:8px;align-items:end}
.purchase-item-row{display:grid;grid-template-columns:1.5fr .9fr .6fr .8fr .8fr auto;gap:8px;align-items:center;padding:10px 0;border-bottom:1px solid var(--line);font-size:13px}
.purchase-item-row:last-child{border-bottom:0}
.purchase-item-row small{color:var(--muted)}
.payable-row{display:flex;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}
.payable-row:last-child{border-bottom:0}
.payable-row .actions{justify-content:flex-end}
@media(max-width:800px){
 .purchase-form-grid{grid-template-columns:1fr 1fr}
 .purchase-item-controls{grid-template-columns:1fr 1fr}
 .purchase-item-row{grid-template-columns:1fr 1fr}
}
@media(max-width:520px){
 .purchase-form-grid{grid-template-columns:1fr}
 .purchase-item-controls{grid-template-columns:1fr}
 .purchase-item-row{grid-template-columns:1fr}
}


.login-screen{position:fixed;inset:0;background:linear-gradient(135deg,#07111f,#17233a 55%,#1d4ed8);display:grid;place-items:center;padding:20px;z-index:200}
.login-screen.hidden{display:none}
.login-card{width:min(420px,96vw);background:#fff;border-radius:22px;box-shadow:0 30px 100px rgba(0,0,0,.35);padding:28px}
.login-brand{display:flex;gap:14px;align-items:center;margin-bottom:24px}
.login-logo{width:58px;height:58px;border-radius:16px;background:linear-gradient(135deg,#2563eb,#22c55e);color:#fff;display:grid;place-items:center;font-size:22px;font-weight:900}
.login-brand h1{margin:0;font-size:27px}.login-brand p{margin:4px 0 0;color:var(--muted)}
.login-card form{display:grid;gap:15px}
.password-wrap{display:grid;grid-template-columns:1fr auto;gap:8px}
.password-wrap button{padding:9px 12px}
.login-error{min-height:18px;color:var(--danger);font-size:13px;text-align:center}
.login-help{margin-top:18px;padding:13px;border-radius:12px;background:#f6f8fc;border:1px solid var(--line);display:grid;gap:4px;font-size:12px;color:var(--muted)}
.login-help strong{color:var(--text)}
.login-footer{text-align:center;color:var(--muted);font-size:12px;margin-top:18px;line-height:1.5}
.session-user{display:grid;text-align:right;line-height:1.1}
.session-user span{font-weight:800;font-size:13px}.session-user small{color:var(--muted);font-size:11px}
.user-status{display:inline-flex;padding:4px 8px;border-radius:999px;font-size:11px}
.user-status.active{background:#e9fbf3;color:#067352}.user-status.inactive{background:#feecec;color:#9f1d1d}
@media(max-width:640px){.session-user{display:none}#logoutBtn{padding:9px 10px}}


.admin-users-shortcut{display:inline-flex}
.mobile-users-btn{display:none;position:fixed;right:16px;bottom:82px;width:52px;height:52px;border-radius:50%;border:0;background:var(--primary);color:#fff;font-size:22px;box-shadow:0 10px 28px rgba(37,99,235,.35);z-index:60}
@media(max-width:640px){
 .sidebar nav{overflow-x:auto;justify-content:flex-start;gap:6px;padding:0 4px;scrollbar-width:none}
 .sidebar nav::-webkit-scrollbar{display:none}
 .nav-btn{flex:0 0 52px}
 .nav-btn:nth-child(n){display:flex}
 .admin-users-shortcut{display:none}
 .mobile-users-btn{display:grid;place-items:center}
}


.receipt-preview-actions{flex-wrap:wrap}
@media(max-width:520px){.receipt-preview-actions button{flex:1 1 140px}}

.cloud-status{padding:6px 9px;border-radius:999px;font-size:11px;font-weight:800;white-space:nowrap}
.cloud-status.online{background:#e8fbf2;color:#067352}
.cloud-status.syncing{background:#fff4df;color:#a9510a}
.cloud-status.offline{background:#feecec;color:#9f1d1d}
@media(max-width:640px){.cloud-status{position:fixed;top:8px;right:8px;z-index:90}}

#modal{z-index:320!important}
#modal .modal-box{position:relative;z-index:321}
.login-screen{z-index:200}

.sale-cancelled{opacity:.72;background:#fff5f5}
.sale-cancelled td{text-decoration:none}
.cancelled-badge{display:inline-flex;padding:4px 8px;border-radius:999px;background:#fee2e2;color:#991b1b;font-size:11px;font-weight:900}
.cancel-reason{display:block;margin-top:4px;color:#991b1b;font-size:11px}
.danger-btn{background:#dc2626!important;border-color:#dc2626!important;color:#fff!important}
@media(max-width:640px){.sales-actions{display:grid;gap:6px}.sales-actions button{width:100%}}

.login-logo,.brand-mark,.logo-mark{overflow:hidden}
.login-logo img,.brand-mark img,.logo-mark img{width:100%;height:100%;object-fit:contain;display:block;border-radius:inherit}
.mobile-logout-btn{display:none;position:fixed;left:14px;bottom:90px;width:52px;height:52px;border-radius:50%;border:0;background:#dc2626;color:#fff;font-size:24px;font-weight:900;box-shadow:0 12px 30px rgba(220,38,38,.35);z-index:75}
@media(max-width:640px){
 .mobile-logout-btn{display:grid;place-items:center}
 #logoutBtn{display:none}
}

.auto-code-wrap{display:grid;grid-template-columns:1fr auto;gap:8px}
.auto-code-wrap input[readonly]{background:#f1f5f9;color:#334155;font-weight:800;letter-spacing:.06em}
.auto-code-note{display:block;margin-top:5px;color:var(--muted);font-size:11px}
@media(max-width:520px){.auto-code-wrap{grid-template-columns:1fr}}

.pos-search-row{display:flex;gap:8px;align-items:center;margin-bottom:10px}
.pos-search-row input{flex:1}
.barcode-box{width:min(560px,96vw)}
.barcode-camera-wrap{position:relative;background:#020617;border-radius:16px;overflow:hidden;aspect-ratio:4/3}
#barcodeVideo{width:100%;height:100%;object-fit:cover;display:block}
.barcode-guide{position:absolute;left:10%;right:10%;top:34%;height:32%;border:3px solid rgba(255,255,255,.9);border-radius:12px;box-shadow:0 0 0 999px rgba(0,0,0,.18)}
.barcode-guide:before{content:"";position:absolute;left:8%;right:8%;top:50%;height:2px;background:#22c55e;box-shadow:0 0 12px #22c55e}
.barcode-status{text-align:center;color:var(--muted);font-size:13px}
.barcode-manual{display:grid;grid-template-columns:1fr auto;gap:8px}
@media(max-width:520px){
 .pos-search-row{display:grid;grid-template-columns:1fr}
 .barcode-manual{grid-template-columns:1fr}
}