/* ============ Fluent/Dynamics-inspired design tokens ============ */
:root{
  --navy-900:#14293e;
  --navy-800:#1b3555;
  --navy-700:#224173;
  --blue-600:#0078d4;
  --blue-700:#106ebe;
  --blue-50:#eff6fc;
  --gray-50:#faf9f8;
  --gray-100:#f3f2f1;
  --gray-200:#edebe9;
  --gray-300:#e1dfdd;
  --gray-500:#8a8886;
  --gray-600:#605e5c;
  --gray-800:#323130;
  --gray-900:#201f1e;
  --green:#107c10;
  --green-bg:#dff6dd;
  --red:#d13438;
  --red-bg:#fde7e9;
  --amber:#ca5010;
  --amber-bg:#fff4ce;
  --radius:4px;
  --shadow-1:0 1.6px 3.6px rgba(0,0,0,.13),0 0.3px 0.9px rgba(0,0,0,.11);
  --shadow-2:0 6.4px 14.4px rgba(0,0,0,.13),0 1.2px 3.6px rgba(0,0,0,.1);
  font-size:14px;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;height:100%;background:var(--gray-100);}
body{
  font-family:"Segoe UI",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif;color:var(--gray-900);
  height:100vh;display:flex;flex-direction:column;overflow:hidden;
}
button{font-family:inherit;cursor:pointer;}
input,select,textarea{font-family:inherit;}
a{color:inherit;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-thumb{background:var(--gray-300);border-radius:5px;}
::-webkit-scrollbar-track{background:transparent;}

/* ============ Top bar ============ */
.topbar{
  height:44px;flex:0 0 44px;background:var(--navy-900);color:#fff;
  display:flex;align-items:center;padding:0 12px;gap:16px;
  font-size:13px;
}
.topbar .brand{font-weight:600;font-size:14px;display:flex;align-items:center;gap:8px;white-space:nowrap;}
.topbar .brand .dot{width:8px;height:8px;border-radius:50%;background:var(--blue-600);}
.topbar .sep{width:1px;height:20px;background:rgba(255,255,255,.2);}
.topbar .spacer{flex:1;}
.topbar .clock{opacity:.85;font-variant-numeric:tabular-nums;}
.topbar select{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.25);border-radius:4px;padding:3px 6px;font-size:12px;}
.topbar select option{color:#000;}
.till-badge{
  display:flex;align-items:center;gap:6px;padding:3px 10px;border-radius:12px;
  background:rgba(255,255,255,.08);font-size:12px;white-space:nowrap;
}
.till-badge .pip{width:7px;height:7px;border-radius:50%;}
.pip.open{background:#6bcb77;}
.pip.closed{background:#e88a8a;}
.topbar .cashier{display:flex;align-items:center;gap:8px;padding:4px 10px;border-radius:4px;white-space:nowrap;}
.topbar .avatar{
  width:24px;height:24px;border-radius:50%;background:var(--blue-600);
  display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:600;flex:0 0 24px;
}

/* ============ App body ============ */
.appbody{flex:1;display:flex;min-height:0;}

/* ============ Left rail ============ */
.rail{
  width:76px;flex:0 0 76px;background:var(--navy-800);display:flex;flex-direction:column;
  align-items:stretch;padding-top:6px;overflow-y:auto;
}
.rail-btn{
  display:flex;flex-direction:column;align-items:center;gap:4px;padding:10px 2px;
  color:rgba(255,255,255,.7);background:none;border:none;font-size:10.5px;letter-spacing:.2px;
  border-left:3px solid transparent;text-decoration:none;
}
.rail-btn .ic{font-size:19px;line-height:1;}
.rail-btn:hover{background:rgba(255,255,255,.06);color:#fff;}
.rail-btn.active{background:var(--navy-700);color:#fff;border-left-color:var(--blue-600);}

/* ============ Main view ============ */
.view{flex:1;min-width:0;display:flex;flex-direction:column;overflow:hidden;}
.view-header{
  flex:0 0 auto;padding:14px 20px 10px;display:flex;align-items:center;gap:12px;
  border-bottom:1px solid var(--gray-300);background:#fff;
}
.view-header h1{font-size:18px;font-weight:600;margin:0;}
.view-header .sub{color:var(--gray-600);font-size:12.5px;}
.view-body{flex:1;overflow-y:auto;padding:16px 20px;}

/* ============ Buttons ============ */
.btn{
  border:1px solid var(--gray-300);background:#fff;padding:7px 14px;border-radius:var(--radius);
  font-size:13px;font-weight:600;color:var(--gray-800);display:inline-flex;align-items:center;gap:6px;
}
.btn:hover{background:var(--gray-100);}
.btn.primary{background:var(--blue-600);border-color:var(--blue-600);color:#fff;}
.btn.primary:hover{background:var(--blue-700);}
.btn.success{background:var(--green);border-color:var(--green);color:#fff;}
.btn.danger{background:#fff;border-color:var(--red);color:var(--red);}
.btn.danger:hover{background:var(--red-bg);}
.btn.ghost{background:transparent;border-color:transparent;}
.btn.ghost:hover{background:var(--gray-100);}
.btn:disabled{opacity:.45;cursor:not-allowed;}
.btn.block{width:100%;justify-content:center;}
.btn.sm{padding:4px 9px;font-size:12px;}

/* ============ Tabs ============ */
.tabs{display:flex;gap:2px;border-bottom:1px solid var(--gray-300);background:#fff;padding:0 20px;overflow-x:auto;}
.tab{padding:10px 14px;font-size:13px;font-weight:600;color:var(--gray-600);border-bottom:2px solid transparent;background:none;border-top:none;border-left:none;border-right:none;white-space:nowrap;}
.tab:hover{color:var(--gray-900);}
.tab.active{color:var(--blue-600);border-bottom-color:var(--blue-600);}

/* ============ Tables ============ */
table{width:100%;border-collapse:collapse;background:#fff;}
th{text-align:left;font-size:11.5px;text-transform:uppercase;letter-spacing:.4px;color:var(--gray-600);padding:9px 12px;border-bottom:1px solid var(--gray-300);background:var(--gray-50);position:sticky;top:0;}
td{padding:9px 12px;border-bottom:1px solid var(--gray-200);font-size:13px;}
tr:hover td{background:var(--blue-50);}
.card{background:#fff;border:1px solid var(--gray-300);border-radius:var(--radius);}
.badge{display:inline-block;padding:2px 8px;border-radius:10px;font-size:11px;font-weight:600;}
.badge.green{background:var(--green-bg);color:var(--green);}
.badge.red{background:var(--red-bg);color:var(--red);}
.badge.amber{background:var(--amber-bg);color:var(--amber);}
.badge.blue{background:var(--blue-50);color:var(--blue-600);}
.badge.gray{background:var(--gray-200);color:var(--gray-600);}

.toolbar{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap;}
.search{
  display:flex;align-items:center;gap:6px;background:#fff;border:1px solid var(--gray-300);
  border-radius:var(--radius);padding:6px 10px;min-width:220px;
}
.search input{border:none;outline:none;flex:1;font-size:13px;}
.field{display:flex;flex-direction:column;gap:4px;}
.field label{font-size:11.5px;color:var(--gray-600);font-weight:600;}
.field input,.field select,.field textarea{
  border:1px solid var(--gray-300);border-radius:var(--radius);padding:7px 9px;font-size:13px;background:#fff;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--blue-600);outline-offset:-1px;border-color:var(--blue-600);}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px;}
.kpi-row{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:16px;}
.kpi{background:#fff;border:1px solid var(--gray-300);border-radius:var(--radius);padding:14px;}
.kpi .lbl{font-size:11.5px;color:var(--gray-600);font-weight:600;text-transform:uppercase;}
.kpi .val{font-size:22px;font-weight:700;margin-top:4px;}

/* ============ SELL SCREEN ============ */
.sell{flex:1;display:flex;min-height:0;}
.sell-main{flex:1;display:flex;flex-direction:column;min-width:0;border-right:1px solid var(--gray-300);}
.scan-row{display:flex;gap:8px;padding:10px 14px;border-bottom:1px solid var(--gray-300);background:#fff;}
.scan-row .search{flex:1;}
.cat-strip{display:flex;gap:6px;padding:8px 14px;overflow-x:auto;background:#fff;border-bottom:1px solid var(--gray-300);}
.cat-chip{
  flex:0 0 auto;padding:6px 14px;border-radius:14px;border:1px solid var(--gray-300);background:#fff;
  font-size:12.5px;font-weight:600;color:var(--gray-700);white-space:nowrap;
}
.cat-chip.active{background:var(--blue-600);border-color:var(--blue-600);color:#fff;}
.prod-grid{flex:1;overflow-y:auto;padding:12px;display:grid;grid-template-columns:repeat(auto-fill,minmax(118px,1fr));gap:10px;align-content:start;}
.prod-card{
  background:#fff;border:1px solid var(--gray-300);border-radius:var(--radius);padding:0;overflow:hidden;
  display:flex;flex-direction:column;text-align:left;height:118px;
}
.prod-card:hover{border-color:var(--blue-600);box-shadow:var(--shadow-1);}
.prod-card .sw{flex:1;display:flex;align-items:center;justify-content:center;font-size:26px;color:#fff;}
.prod-card .info{padding:6px 8px;border-top:1px solid var(--gray-200);}
.prod-card .nm{font-size:11.5px;font-weight:600;line-height:1.25;max-height:28px;overflow:hidden;}
.prod-card .pr{font-size:12px;font-weight:700;color:var(--blue-600);margin-top:2px;}
.prod-card .stockflag{font-size:9.5px;color:var(--red);font-weight:700;}

.sell-cart{width:400px;flex:0 0 400px;background:#fff;display:flex;flex-direction:column;min-height:0;}
.cust-line{display:flex;align-items:center;gap:8px;padding:10px 12px;border-bottom:1px solid var(--gray-300);}
.cust-line .who{flex:1;font-size:13px;}
.cust-line .who b{display:block;font-size:13px;}
.cust-line .who span{font-size:11.5px;color:var(--gray-600);}
.cart-list{flex:1;overflow-y:auto;padding:0 8px;}
.cart-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:var(--gray-500);gap:6px;font-size:13px;}
.cart-item{padding:9px 6px;border-bottom:1px solid var(--gray-200);display:flex;gap:8px;align-items:flex-start;}
.cart-item .sw-sm{width:34px;height:34px;border-radius:4px;flex:0 0 34px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:15px;}
.cart-item .mid{flex:1;min-width:0;}
.cart-item .mid .nm{font-size:12.5px;font-weight:600;}
.cart-item .mid .sub{font-size:11px;color:var(--gray-600);}
.cart-item .disc-tag{font-size:10.5px;color:var(--green);font-weight:700;}
.qty-ctrl{display:flex;align-items:center;gap:5px;margin-top:4px;}
.qty-ctrl button{width:20px;height:20px;border-radius:3px;border:1px solid var(--gray-300);background:#fff;font-size:12px;line-height:1;}
.qty-ctrl input{width:32px;text-align:center;border:1px solid var(--gray-300);border-radius:3px;padding:2px;font-size:12px;}
.cart-item .right{text-align:right;flex:0 0 70px;}
.cart-item .right .lt{font-size:12px;font-weight:700;}
.cart-item .right .strike{font-size:10.5px;color:var(--gray-500);text-decoration:line-through;}
.cart-item .rm{font-size:11px;color:var(--red);background:none;border:none;padding:2px;}

.cart-summary{border-top:1px solid var(--gray-300);padding:10px 14px;font-size:13px;}
.sum-row{display:flex;justify-content:space-between;padding:3px 0;}
.sum-row.total{font-size:17px;font-weight:700;border-top:1px dashed var(--gray-300);margin-top:6px;padding-top:8px;}
.sum-row .lbl{color:var(--gray-600);}
.sum-row.total .lbl{color:var(--gray-900);}
.sum-row .neg{color:var(--green);}

.cart-actions{display:grid;grid-template-columns:1fr 1fr 1fr;gap:6px;padding:10px 12px;border-top:1px solid var(--gray-300);}
.pay-row{padding:0 12px 12px;}

/* ============ Modal ============ */
.modal-mask{position:fixed;inset:0;background:rgba(20,25,35,.45);display:flex;align-items:center;justify-content:center;z-index:100;}
.modal{background:#fff;border-radius:6px;box-shadow:var(--shadow-2);width:420px;max-width:92vw;max-height:88vh;display:flex;flex-direction:column;overflow:hidden;}
.modal.wide{width:640px;}
.modal-head{padding:14px 18px;border-bottom:1px solid var(--gray-300);display:flex;align-items:center;}
.modal-head h2{font-size:15px;margin:0;flex:1;}
.modal-head .x{background:none;border:none;font-size:18px;color:var(--gray-600);padding:2px 6px;}
.modal-body{padding:16px 18px;overflow-y:auto;}
.modal-foot{padding:12px 18px;border-top:1px solid var(--gray-300);display:flex;justify-content:flex-end;gap:8px;}

/* Payment */
.tender-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:14px;}
.tender-btn{padding:14px 8px;border:1px solid var(--gray-300);border-radius:var(--radius);background:#fff;font-weight:700;font-size:13px;display:flex;flex-direction:column;align-items:center;gap:6px;}
.tender-btn.active{border-color:var(--blue-600);background:var(--blue-50);color:var(--blue-600);}
.quickcash{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin:10px 0;}
.due-box{background:var(--gray-50);border:1px solid var(--gray-300);border-radius:var(--radius);padding:12px;text-align:center;margin-bottom:10px;}
.due-box .amt{font-size:24px;font-weight:700;}

.receipt{font-family:"Courier New",monospace;font-size:12px;line-height:1.5;padding:10px;background:var(--gray-50);border:1px dashed var(--gray-300);}
.receipt .hr{border-top:1px dashed var(--gray-500);margin:6px 0;}
.receipt .row{display:flex;justify-content:space-between;}

.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:60px 20px;color:var(--gray-500);gap:8px;}
.empty-state .ic{font-size:38px;}

.pill-toggle{display:inline-flex;border:1px solid var(--gray-300);border-radius:14px;overflow:hidden;}
.pill-toggle button{border:none;background:#fff;padding:5px 12px;font-size:12px;font-weight:600;color:var(--gray-600);}
.pill-toggle button.active{background:var(--blue-600);color:#fff;}

.toast-wrap{position:fixed;bottom:18px;right:18px;z-index:200;display:flex;flex-direction:column;gap:8px;}
.toast{background:var(--gray-900);color:#fff;padding:10px 16px;border-radius:6px;font-size:13px;box-shadow:var(--shadow-2);display:flex;align-items:center;gap:8px;animation:toastin .15s ease-out;}
.toast.success{background:var(--green);}
.toast.danger{background:var(--red);}
@keyframes toastin{from{opacity:0;transform:translateY(6px);}to{opacity:1;transform:translateY(0);}}

.currency-card{display:flex;align-items:center;gap:12px;padding:14px;border:1px solid var(--gray-300);border-radius:var(--radius);cursor:pointer;background:#fff;}
.currency-card.active{border-color:var(--blue-600);background:var(--blue-50);}
.currency-card .sym{font-size:20px;font-weight:700;width:44px;text-align:center;}

/* ============ Mobile nav toggle (hamburger) ============ */
.hamburger{display:none;background:none;border:none;color:#fff;font-size:20px;padding:4px 8px;margin-right:2px;}
.rail-close{display:none;}
.rail-scrim{display:none;}

/* ============ Responsive breakpoints ============ */
@media (max-width:980px){
  .sell-cart{width:320px;flex-basis:320px;}
  .kpi-row{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:1fr 1fr;}
}

@media (max-width:760px){
  html{font-size:13px;}

  /* topbar: keep essentials, wrap gracefully */
  .topbar{gap:8px;padding:0 8px;height:48px;flex:0 0 48px;}
  .topbar .brand span:not(.dot){display:none;}
  .topbar select{max-width:86px;font-size:11px;padding:3px 4px;}
  .topbar .clock{display:none;}
  .topbar .cashier div div{display:none;}
  .till-badge{padding:3px 7px;}
  .hamburger{display:inline-flex;}

  /* rail becomes an off-canvas drawer, toggled by hamburger */
  .appbody{position:relative;}
  .rail{
    position:fixed;top:48px;bottom:0;left:0;z-index:60;
    width:220px;flex:0 0 220px;
    transform:translateX(-100%);transition:transform .18s ease-out;
    box-shadow:var(--shadow-2);
  }
  .rail.open{transform:translateX(0);}
  .rail-btn{flex-direction:row;justify-content:flex-start;gap:10px;padding:12px 16px;font-size:13px;}
  .rail-btn .ic{font-size:18px;}
  .rail-scrim{
    display:none;position:fixed;inset:48px 0 0 0;background:rgba(0,0,0,.35);z-index:50;
  }
  .rail-scrim.open{display:block;}

  /* sell screen: stack product grid above cart, full width, scrollable */
  .sell{flex-direction:column;overflow-y:auto;}
  .sell-main{border-right:none;border-bottom:1px solid var(--gray-300);flex:0 0 auto;}
  .prod-grid{max-height:46vh;}
  .sell-cart{width:100%;flex:1 1 auto;min-height:420px;}

  .cart-actions{grid-template-columns:1fr 1fr;}

  /* generic view layout */
  .view-header{padding:12px 14px 8px;flex-wrap:wrap;}
  .view-body{padding:12px 14px;}
  .tabs{padding:0 14px;}
  .grid-2,.grid-3{grid-template-columns:1fr;}
  .kpi-row{grid-template-columns:1fr 1fr;gap:8px;}
  .kpi{padding:10px;}
  .kpi .val{font-size:18px;}

  /* tables scroll horizontally instead of squeezing */
  .card{overflow-x:auto;}
  table{min-width:560px;}

  /* modals go near-fullscreen */
  .modal{width:96vw;max-height:94vh;}
  .modal.wide{width:96vw;}
  .tender-grid{grid-template-columns:1fr 1fr;}
  .quickcash{grid-template-columns:1fr 1fr;}

  .toast-wrap{left:10px;right:10px;bottom:10px;}
  .toast{width:100%;}

  .prod-grid{grid-template-columns:repeat(auto-fill,minmax(96px,1fr));}
}

@media (max-width:420px){
  .cart-actions{grid-template-columns:1fr 1fr 1fr;}
  .prod-grid{grid-template-columns:repeat(auto-fill,minmax(84px,1fr));}
  .prod-card{height:104px;}
}