:root{
  --ink:#1B2430; --ink-soft:#2C394B; --paper:#F7F6F2; --card:#FFFFFF; --line:#E3E1D9;
  --green:#2F6F4E; --green-dark:#22553B; --amber:#C1832F; --red:#B4443A; --muted:#6B7280;
  --display:'Merriweather','Georgia',serif; --body:'Segoe UI',Arial,Helvetica,sans-serif; --mono:'Courier New',Courier,monospace;
}
*{box-sizing:border-box;}
html,body{margin:0;height:100%;}
body{font-family:var(--body);background:var(--paper);color:var(--ink);-webkit-font-smoothing:antialiased;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4{font-family:var(--display);}
table{border-collapse:collapse;width:100%;}

/* ============ App shell ============ */
.app{display:flex;min-height:100vh;}
.sidebar{width:230px;background:var(--ink);color:#C9CDD3;flex-shrink:0;padding:22px 0;display:flex;flex-direction:column;position:sticky;top:0;height:100vh;overflow-y:auto;}
.brand{padding:0 20px 20px 20px;border-bottom:1px solid #2C394B;margin-bottom:8px;}
.brand .mark{font-family:var(--display);font-size:22px;color:#fff;letter-spacing:.02em;}
.brand .mark span{color:var(--green);}
.brand .sub{font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:#7C8695;margin-top:3px;}
.nav-group{margin-bottom:2px;}
.nav-title{font-size:10.5px;text-transform:uppercase;letter-spacing:.12em;color:#5C6673;padding:14px 20px 6px;}
.nav-item{display:flex;align-items:center;gap:10px;padding:9px 20px;font-size:13.5px;color:#C9CDD3;cursor:pointer;border-left:3px solid transparent;}
.nav-item .ic{width:16px;text-align:center;opacity:.85;font-size:13px;}
.nav-item:hover{background:#232E3D;color:#fff;}
.nav-item.current{background:#232E3D;border-left-color:var(--green);color:#fff;}

.main{flex:1;min-width:0;display:flex;flex-direction:column;}
.topbar{background:var(--card);border-bottom:1px solid var(--line);padding:14px 26px;display:flex;align-items:center;justify-content:space-between;}
.topbar h1{font-size:19px;margin:0;font-weight:700;}
.topbar .crumbs{font-size:12px;color:var(--muted);margin-top:2px;}
.who{display:flex;align-items:center;gap:12px;font-size:13px;}
.who .avatar{width:32px;height:32px;border-radius:50%;background:var(--green);color:#fff;display:flex;align-items:center;justify-content:center;font-family:var(--display);font-size:13px;}
.who a{color:var(--muted);font-size:12.5px;}
.who a:hover{color:var(--red);}

.content{padding:24px 26px;overflow:auto;}

/* ============ KPI / panels ============ */
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:22px;}
.kpi{background:var(--card);border:1px solid var(--line);border-radius:6px;padding:16px 18px;}
.kpi .lbl{font-size:11.5px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);}
.kpi .val{font-family:var(--display);font-size:26px;margin-top:6px;font-weight:700;}
.kpi .delta{font-size:12px;margin-top:4px;}
.delta.up{color:var(--green);} .delta.down{color:var(--red);}

.panels{display:grid;grid-template-columns:1.4fr 1fr;gap:16px;}
.panel{background:var(--card);border:1px solid var(--line);border-radius:6px;padding:18px 20px;margin-bottom:16px;}
.panel h3{font-size:15px;margin:0 0 14px;border-bottom:1px solid var(--line);padding-bottom:10px;}
.panel table th{text-align:left;font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);padding:6px 8px;border-bottom:1px solid var(--line);}
.panel table td{padding:9px 8px;border-bottom:1px solid #F0EFE9;font-size:13px;}

.tag{display:inline-block;font-size:11px;padding:2px 8px;border-radius:10px;background:#EAF3EE;color:var(--green-dark);}
.tag.low{background:#FBECEA;color:var(--red);}
.tag.muted{background:#EDEBE3;color:var(--muted);}

/* ============ Cards / data table page ============ */
.page-head{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:18px;flex-wrap:wrap;gap:10px;}
.page-head .desc{font-size:13px;color:var(--muted);margin-top:2px;}
.card{background:var(--card);border:1px solid var(--line);border-radius:6px;overflow:hidden;}
.card-pad{padding:20px 22px;}
.toolbar{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid var(--line);gap:12px;flex-wrap:wrap;}
.toolbar form{display:flex;gap:8px;flex-wrap:wrap;}
.toolbar input[type=text],.toolbar select{padding:8px 12px;border:1px solid var(--line);border-radius:5px;font-size:13px;font-family:var(--body);}

.data-table{width:100%;font-size:13.5px;}
.data-table th{text-align:left;font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);padding:12px 16px;background:#FAFAF7;border-bottom:1px solid var(--line);}
.data-table td{padding:12px 16px;border-bottom:1px solid #F0EFE9;}
.data-table tr:last-child td{border-bottom:none;}
.data-table .actions{display:flex;gap:14px;font-size:12.5px;}
.data-table .actions a{color:var(--green-dark);}
.data-table .actions a.danger{color:var(--red);}
.empty-row{padding:40px;text-align:center;color:var(--muted);font-size:13.5px;}

/* ============ Buttons ============ */
.btn{padding:9px 16px;border-radius:5px;font-size:13px;border:1px solid var(--line);background:#fff;cursor:pointer;font-family:var(--body);display:inline-block;color:var(--ink);}
.btn:hover{border-color:#C7C4B6;}
.btn.primary{background:var(--green);border-color:var(--green);color:#fff;}
.btn.primary:hover{background:var(--green-dark);}
.btn.danger{background:#fff;border-color:var(--red);color:var(--red);}
.btn.danger:hover{background:var(--red);color:#fff;}
.btn.sm{padding:6px 12px;font-size:12px;}
.btn[disabled]{opacity:.5;cursor:not-allowed;}

/* ============ Forms ============ */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.form-grid.single{grid-template-columns:1fr;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:12px;font-weight:600;margin-bottom:6px;color:var(--ink-soft);}
.field input[type=text],.field input[type=number],.field input[type=email],.field input[type=password],
.field input[type=date],.field input[type=tel],.field select,.field textarea{
  width:100%;padding:9px 12px;border:1px solid var(--line);border-radius:5px;font-size:13.5px;font-family:var(--body);
}
.field .hint{font-size:11px;color:var(--muted);margin-top:4px;}
.field .error{font-size:11.5px;color:var(--red);margin-top:4px;}
.form-actions{display:flex;gap:10px;margin-top:8px;border-top:1px solid var(--line);padding-top:18px;}

/* ============ Alerts ============ */
.alert{padding:12px 16px;border-radius:5px;font-size:13.5px;margin-bottom:18px;}
.alert.success{background:#EAF3EE;color:var(--green-dark);border:1px solid #CFE6D9;}
.alert.error{background:#FBECEA;color:var(--red);border:1px solid #F1CFC9;}

/* ============ Badges for role/status ============ */
.badge{display:inline-block;font-size:11px;padding:3px 9px;border-radius:4px;font-weight:600;}
.badge.admin{background:#1B2430;color:#fff;}
.badge.manager{background:#EAF3EE;color:var(--green-dark);}
.badge.cashier{background:#EDEBE3;color:var(--ink-soft);}
.badge.active{background:#EAF3EE;color:var(--green-dark);}
.badge.inactive{background:#F0EFE9;color:var(--muted);}

/* ============ Login ============ */
.login-stage{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(180deg,#1B2430,#232E3D);padding:20px;}
.login-card{width:380px;max-width:100%;background:var(--card);border-radius:8px;overflow:hidden;box-shadow:0 20px 60px rgba(0,0,0,.35);}
.login-head{background:var(--ink);color:#fff;padding:26px 28px;text-align:center;}
.login-head .mark{font-family:var(--display);font-size:24px;}
.login-head .mark span{color:#5FA983;}
.login-head .sub{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:#8B93A0;margin-top:4px;}
.login-body{padding:28px;}

/* ============ POS screen ============ */
.pos-wrap{display:flex;height:calc(100vh - 63px);}
.pos-products{flex:1;padding:18px 20px;overflow:auto;}
.pos-search{display:flex;gap:10px;margin-bottom:16px;}
.pos-search input{flex:1;padding:10px 14px;border:1px solid var(--line);border-radius:5px;font-size:14px;font-family:var(--body);}
.cat-row{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap;}
.cat-chip{padding:6px 14px;border-radius:16px;background:var(--card);border:1px solid var(--line);font-size:12.5px;cursor:pointer;}
.cat-chip.on{background:var(--ink);color:#fff;border-color:var(--ink);}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;}
.prod{background:var(--card);border:1px solid var(--line);border-radius:6px;padding:14px;cursor:pointer;text-align:left;}
.prod:hover{border-color:var(--green);}
.prod .swatch{height:56px;border-radius:4px;margin-bottom:10px;background:linear-gradient(135deg,#EDEBE3,#DCD9CC);display:flex;align-items:center;justify-content:center;font-family:var(--display);color:#9C9788;font-size:12px;}
.prod .name{font-size:13px;font-weight:600;}
.prod .sku{font-size:11px;color:var(--muted);margin:2px 0 8px;}
.prod .price{font-family:var(--display);font-size:15px;color:var(--green-dark);font-weight:700;}
.prod .stock-warn{font-size:10.5px;color:var(--red);margin-top:4px;}

.cart{width:360px;background:var(--card);border-left:1px solid var(--line);display:flex;flex-direction:column;}
.cart-head{padding:16px 18px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;}
.cart-head h3{font-size:15px;margin:0;}
.cust-pick select{border:none;background:transparent;font-size:12px;color:var(--green-dark);cursor:pointer;font-family:var(--body);}
.cart-items{flex:1;overflow:auto;padding:8px 18px;}
.cart-line{display:flex;justify-content:space-between;padding:11px 0;border-bottom:1px solid #F0EFE9;}
.cart-line .n{font-size:13px;font-weight:600;}
.cart-line .m{font-size:11.5px;color:var(--muted);}
.qty{display:flex;align-items:center;gap:8px;margin-top:4px;}
.qty button{width:20px;height:20px;border:1px solid var(--line);background:#fff;border-radius:3px;cursor:pointer;font-size:12px;line-height:1;}
.remove-line{color:var(--red);font-size:11px;cursor:pointer;margin-top:4px;display:inline-block;}
.cart-empty{text-align:center;color:var(--muted);font-size:13px;padding:40px 10px;}
.cart-totals{padding:16px 18px;border-top:1px solid var(--line);}
.trow{display:flex;justify-content:space-between;font-size:13px;margin-bottom:8px;color:var(--muted);align-items:center;}
.trow input{width:80px;padding:4px 8px;border:1px solid var(--line);border-radius:4px;font-size:12.5px;text-align:right;}
.trow.grand{font-size:17px;color:var(--ink);font-weight:700;font-family:var(--display);border-top:1px dashed var(--line);padding-top:10px;margin-top:6px;}
.pay-btn{width:100%;background:var(--green);color:#fff;border:none;padding:13px;border-radius:5px;font-size:14.5px;font-weight:600;cursor:pointer;margin-top:12px;font-family:var(--body);}
.pay-btn:hover{background:var(--green-dark);}
.pay-btn[disabled]{opacity:.5;cursor:not-allowed;}
.hold-btn{width:100%;background:transparent;color:var(--ink);border:1px solid var(--line);padding:10px;border-radius:5px;font-size:13px;cursor:pointer;margin-top:8px;}

/* ============ Receipt / invoice print ============ */
.receipt-stage{display:flex;justify-content:center;padding:40px 20px;background:#EDECE6;min-height:100vh;}
.receipt{width:320px;background:#fff;padding:26px 22px 34px;font-family:var(--mono);box-shadow:0 6px 24px rgba(0,0,0,.12);}
.receipt.font-classic{font-family:var(--mono);}
.receipt.font-simple{font-family:Arial,Helvetica,sans-serif;}
.receipt.font-typewriter{font-family:'Courier New',Courier,monospace;}
.r-store{text-align:center;font-family:var(--display);font-size:18px;font-weight:700;letter-spacing:.02em;}
.r-line{text-align:center;font-size:11px;color:#444;margin-top:2px;}
.r-div{border-top:1px dashed #999;margin:14px 0;}
.r-meta{font-size:11.5px;display:flex;justify-content:space-between;margin-bottom:3px;}
.r-items .ri{margin-bottom:8px;}
.ri-top{display:flex;justify-content:space-between;font-size:12.5px;font-weight:700;}
.ri-sub{display:flex;justify-content:space-between;font-size:11.5px;color:#555;}
.r-totals .rt{display:flex;justify-content:space-between;font-size:12.5px;margin-bottom:4px;}
.r-totals .rt.grand{font-size:15px;font-weight:700;border-top:1px dashed #999;padding-top:8px;margin-top:6px;}
.r-foot{text-align:center;font-size:11px;margin-top:16px;color:#444;}
.r-barcode{height:42px;margin:16px 0 6px;background:repeating-linear-gradient(90deg,#111 0 2px,transparent 2px 5px);}
.receipt-actions{text-align:center;margin-top:16px;}
@media print{
  .receipt-actions,.no-print{display:none !important;}
  .receipt-stage{padding:0;background:#fff;}
  .receipt{box-shadow:none;}
}

/* ============ Module management ============ */
.mod-toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;flex-wrap:wrap;gap:10px;}
.mod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.mod-card{background:var(--card);border:1px solid var(--line);border-radius:6px;padding:18px;}
.mod-card .top{display:flex;justify-content:space-between;align-items:flex-start;}
.mod-ic{width:38px;height:38px;border-radius:8px;background:#EAF3EE;color:var(--green-dark);display:flex;align-items:center;justify-content:center;font-family:var(--display);font-weight:700;}
.mod-card h4{font-size:14.5px;margin:12px 0 4px;}
.mod-card p{font-size:12.5px;color:var(--muted);margin:0 0 14px;line-height:1.5;}
.mod-foot{display:flex;justify-content:space-between;align-items:center;font-size:11.5px;color:var(--muted);}
.switch-form{display:inline-block;}
.switch{width:36px;height:20px;border-radius:10px;background:var(--line);position:relative;cursor:pointer;border:none;padding:0;}
.switch.on{background:var(--green);}
.switch::after{content:"";position:absolute;width:16px;height:16px;border-radius:50%;background:#fff;top:2px;left:2px;transition:.15s;}
.switch.on::after{left:18px;}
.mod-card.installable{border-style:dashed;}
.mod-card.installable .btn{width:100%;margin-top:2px;}

/* ============ Settings ============ */
.settings-wrap{display:grid;grid-template-columns:230px 1fr;gap:0;background:var(--card);border:1px solid var(--line);border-radius:6px;overflow:hidden;}
.set-nav{background:#FAFAF7;border-right:1px solid var(--line);padding:16px 0;}
.set-nav .item{display:block;padding:10px 20px;font-size:13px;cursor:pointer;border-left:3px solid transparent;color:var(--ink);}
.set-nav .item.on{border-left-color:var(--green);background:#fff;font-weight:600;color:var(--green-dark);}
.set-body{padding:26px 30px;}
.set-body h3{font-size:17px;margin:0 0 4px;}
.set-body .hint{font-size:12.5px;color:var(--muted);margin-bottom:22px;}
.swatch-row{display:flex;gap:10px;margin-top:6px;}
.cswatch{width:26px;height:26px;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 1px var(--line);cursor:pointer;display:inline-block;}
.cswatch.sel{box-shadow:0 0 0 2px var(--ink);}

.pagination{display:flex;gap:6px;padding:16px 20px;justify-content:flex-end;}
.pagination a,.pagination span{padding:6px 11px;border:1px solid var(--line);border-radius:4px;font-size:12.5px;color:var(--ink);}
.pagination a.current{background:var(--ink);color:#fff;border-color:var(--ink);}

@media (max-width: 900px){
  .kpis{grid-template-columns:repeat(2,1fr);}
  .panels{grid-template-columns:1fr;}
  .grid{grid-template-columns:repeat(2,1fr);}
  .mod-grid{grid-template-columns:1fr;}
  .pos-wrap{flex-direction:column;height:auto;}
  .cart{width:100%;}
}