:root{
  --bg:#0f1729; --bg2:#16213a; --surface:#ffffff; --surface-2:#f4f6fb; --surface-3:#eef1f8;
  --ink:#1a2236; --ink-2:#5b6b8c; --muted:#8a97b3; --line:#e6eaf2; --line-2:#d8deea;
  --primary:#2f6df6; --primary-2:#1d4ed8; --primary-soft:#e8f0ff;
  --accent:#7c3aed; --success:#16a34a; --success-soft:#e7f7ee;
  --warn:#d97706; --warn-soft:#fdf2e3; --danger:#dc2626; --danger-soft:#fdeaea;
  --info:#0ea5e9; --info-soft:#e6f6fe;
  --shadow:0 1px 3px rgba(16,24,40,.08),0 8px 24px rgba(16,24,40,.06);
  --radius:14px; --radius-sm:9px; --nav-w:248px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Inter",Arial,sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{font-family:var(--font);color:var(--ink);background:var(--surface-2);font-size:14px;line-height:1.45;-webkit-font-smoothing:antialiased}
.hidden{display:none!important}
.muted{color:var(--muted)}
a{color:var(--primary);text-decoration:none}

/* ----- login ----- */
.login-screen{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;
  background:radial-gradient(1200px 600px at 20% -10%,#1f3a8a 0,transparent 60%),radial-gradient(900px 500px at 110% 10%,#7c3aed 0,transparent 55%),var(--bg)}
.login-card{width:380px;max-width:92vw;background:var(--surface);border-radius:20px;padding:34px 30px;box-shadow:0 30px 80px rgba(0,0,0,.45)}
.login-logo{text-align:center;margin-bottom:22px}
.logo-badge{width:64px;height:64px;margin:0 auto 12px;border-radius:18px;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center;font-size:34px;box-shadow:0 10px 30px rgba(47,109,246,.5)}
.login-logo h1{margin:0;font-size:22px;font-weight:800;letter-spacing:-.3px}
.login-form label{display:block;font-size:12px;font-weight:600;color:var(--ink-2);margin:14px 0 6px}
.login-form input{width:100%;padding:11px 13px;border:1px solid var(--line-2);border-radius:var(--radius-sm);font-size:14px;background:var(--surface-2)}
.login-form input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}
.login-hint{margin-top:18px;font-size:11.5px;color:var(--muted);text-align:center;background:var(--surface-2);padding:10px;border-radius:10px;line-height:1.7}
.login-hint strong{color:var(--ink-2)}

/* ----- app shell ----- */
.app{display:flex;height:100vh;overflow:hidden}
.sidebar{width:var(--nav-w);background:var(--bg);color:#cdd6ea;display:flex;flex-direction:column;flex-shrink:0;transition:transform .2s}
.sidebar-brand{display:flex;align-items:center;gap:10px;padding:18px 18px 14px;font-weight:800;font-size:18px;color:#fff}
.brand-ico{font-size:24px}
.sidebar-nav{flex:1;overflow-y:auto;padding:6px 10px}
.nav-group{font-size:10.5px;text-transform:uppercase;letter-spacing:.7px;color:#6b7a9c;padding:14px 12px 6px;font-weight:700}
.nav-item{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:10px;color:#cdd6ea;cursor:pointer;font-size:13.5px;font-weight:500;margin-bottom:2px}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.active{background:linear-gradient(90deg,var(--primary),var(--primary-2));color:#fff;box-shadow:0 6px 16px rgba(47,109,246,.4)}
.nav-item .ni-ico{font-size:16px;width:20px;text-align:center}
.sidebar-foot{padding:12px;border-top:1px solid rgba(255,255,255,.08)}
.user-chip{display:flex;align-items:center;gap:10px;padding:8px;border-radius:10px;margin-bottom:8px}
.avatar{width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}
.uc-name{font-size:13px;font-weight:700;color:#fff}
.uc-role{font-size:11px;color:#8b9abd}

.main{flex:1;display:flex;flex-direction:column;overflow:hidden;background:var(--surface-2)}
.topbar{height:60px;background:var(--surface);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:14px;padding:0 18px;flex-shrink:0}
.page-title{font-size:17px;font-weight:800;letter-spacing:-.2px}
.topbar-spacer{flex:1}
.icon-btn{width:38px;height:38px;border:none;background:var(--surface-2);border-radius:10px;font-size:17px;cursor:pointer;color:var(--ink-2)}
.icon-btn:hover{background:var(--surface-3)}
.global-search{position:relative;width:340px;max-width:38vw}
.global-search input{width:100%;padding:9px 12px 9px 34px;border:1px solid var(--line-2);border-radius:10px;background:var(--surface-2);font-size:13px}
.global-search .gs-ico{position:absolute;left:11px;top:50%;transform:translateY(-50%);font-size:14px}
.gs-results{position:absolute;top:44px;left:0;right:0;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);z-index:50;max-height:360px;overflow:auto;padding:6px}
.gs-group-title{font-size:10.5px;text-transform:uppercase;color:var(--muted);font-weight:700;padding:8px 10px 4px}
.gs-row{display:flex;justify-content:space-between;gap:10px;padding:8px 10px;border-radius:8px;cursor:pointer}
.gs-row:hover{background:var(--surface-2)}
.gs-row small{color:var(--muted)}

.notif-btn{position:relative}
.notif-dot{position:absolute;top:7px;right:8px;width:9px;height:9px;border-radius:50%;background:var(--danger);border:2px solid #fff}
.notif-panel{position:absolute;top:52px;right:14px;width:340px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);z-index:60;max-height:420px;overflow:auto;padding:8px}
.notif-item{padding:10px 12px;border-radius:10px;font-size:13px;display:flex;gap:9px;align-items:flex-start}
.notif-item:hover{background:var(--surface-2)}
.notif-item .ni-dot{width:8px;height:8px;border-radius:50%;margin-top:6px;flex-shrink:0;background:var(--info)}
.notif-item.unread{background:var(--info-soft)}

.content{flex:1;overflow-y:auto;padding:22px 24px 40px}

/* ----- generic ui ----- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:9px 15px;border-radius:10px;border:1px solid var(--line-2);background:#fff;color:var(--ink);font-size:13px;font-weight:600;cursor:pointer;transition:.12s;font-family:inherit}
.btn:hover{background:var(--surface-2)}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-2)}
.btn-success{background:var(--success);border-color:var(--success);color:#fff}
.btn-success:hover{filter:brightness(.95)}
.btn-danger{background:var(--danger);border-color:var(--danger);color:#fff}
.btn-danger:hover{filter:brightness(.95)}
.btn-warn{background:var(--warn);border-color:var(--warn);color:#fff}
.btn-ghost{background:transparent;border-color:transparent;color:var(--ink-2)}
.btn-ghost:hover{background:var(--surface-3)}
.btn-sm{padding:6px 11px;font-size:12px}
.btn-block{width:100%}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn-icon{padding:7px 10px}

.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.card-pad{padding:18px}
.card-head{display:flex;align-items:center;justify-content:space-between;padding:15px 18px;border-bottom:1px solid var(--line)}
.card-head h3{margin:0;font-size:15px;font-weight:700}
.card-body{padding:16px 18px}

.grid{display:grid;gap:16px}
.cols-4{grid-template-columns:repeat(4,1fr)}
.cols-3{grid-template-columns:repeat(3,1fr)}
.cols-2{grid-template-columns:repeat(2,1fr)}
@media(max-width:1100px){.cols-4{grid-template-columns:repeat(2,1fr)}.cols-3{grid-template-columns:repeat(2,1fr)}}
@media(max-width:720px){.cols-4,.cols-3,.cols-2{grid-template-columns:1fr}.sidebar{position:fixed;z-index:80;height:100%}.global-search{display:none}}

.kpi{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.kpi .kpi-ico{position:absolute;right:12px;top:12px;font-size:30px;opacity:.16}
.kpi .kpi-label{font-size:12px;color:var(--ink-2);font-weight:600}
.kpi .kpi-value{font-size:25px;font-weight:800;letter-spacing:-.5px;margin-top:4px}
.kpi .kpi-sub{font-size:11.5px;color:var(--muted);margin-top:3px}
.kpi.accent .kpi-value{color:var(--primary)}
.kpi.green .kpi-value{color:var(--success)}
.kpi.warn .kpi-value{color:var(--warn)}
.kpi.danger .kpi-value{color:var(--danger)}
.kpi.purple .kpi-value{color:var(--accent)}

.section-title{font-size:13px;font-weight:700;color:var(--ink-2);text-transform:uppercase;letter-spacing:.5px;margin:6px 0 12px}

table.tbl{width:100%;border-collapse:collapse;font-size:13px}
table.tbl th{text-align:left;padding:11px 12px;border-bottom:2px solid var(--line);color:var(--ink-2);font-weight:700;font-size:12px;white-space:nowrap;background:var(--surface-2)}
table.tbl td{padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:middle}
table.tbl tbody tr:hover{background:var(--surface-2)}
table.tbl .num{text-align:right;font-variant-numeric:tabular-nums}
.tbl-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--line);background:#fff}
.w32{width:32px}.c{text-align:center}
table.tbl tbody tr.sel{background:rgba(99,102,241,.12)}
.checkbox-inline{display:inline-flex;align-items:center;gap:6px;cursor:pointer}

.toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:14px}
.toolbar .grow{flex:1}
.field{display:flex;flex-direction:column;gap:5px;margin-bottom:13px}
.field label{font-size:12px;font-weight:600;color:var(--ink-2)}
.field input,.field select,.field textarea{padding:9px 11px;border:1px solid var(--line-2);border-radius:9px;font-size:14px;font-family:inherit;background:#fff;color:var(--ink)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}
.field-row{display:flex;gap:12px}.field-row>.field{flex:1}

.badge{display:inline-flex;align-items:center;gap:5px;padding:3px 9px;border-radius:999px;font-size:11.5px;font-weight:700}
.badge.in{background:var(--success-soft);color:var(--success)}
.badge.low{background:var(--warn-soft);color:var(--warn)}
.badge.out{background:var(--danger-soft);color:var(--danger)}
.badge.expiring{background:#fff4e0;color:#c2410c}
.badge.expired{background:#eceff3;color:#475569}
.badge.paid{background:var(--success-soft);color:var(--success)}
.badge.unpaid{background:var(--danger-soft);color:var(--danger)}
.badge.partial{background:var(--warn-soft);color:var(--warn)}
.badge.active{background:var(--info-soft);color:var(--info)}
.badge.default{background:var(--surface-3);color:var(--ink-2)}

.alert{padding:11px 14px;border-radius:10px;font-size:13px;margin-top:10px}
.alert-error{background:var(--danger-soft);color:var(--danger);border:1px solid #f6c9c9}
.alert-success{background:var(--success-soft);color:var(--success);border:1px solid #bfe6ce}
.alert-info{background:var(--info-soft);color:#0369a1;border:1px solid #bfe6f3}

.empty{text-align:center;padding:50px 20px;color:var(--muted)}
.empty .em-ico{font-size:44px;opacity:.5}
.empty p{margin:10px 0 0}

.modal-host{position:fixed;inset:0;background:rgba(15,23,41,.55);display:flex;align-items:center;justify-content:center;z-index:100;padding:20px;backdrop-filter:blur(2px)}
.modal{width:640px;max-width:96vw;max-height:92vh;overflow:auto;background:#fff;border-radius:18px;box-shadow:0 30px 80px rgba(0,0,0,.4)}
.modal.wide{width:860px}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;border-bottom:1px solid var(--line);position:sticky;top:0;background:#fff;z-index:2}
.modal-head h3{margin:0;font-size:17px;font-weight:800}
.modal-body{padding:20px 22px}
.modal-foot{display:flex;justify-content:flex-end;gap:10px;padding:16px 22px;border-top:1px solid var(--line);position:sticky;bottom:0;background:#fff}
.close-x{font-size:22px;cursor:pointer;color:var(--muted);border:none;background:none}

.toast-host{position:fixed;bottom:22px;right:22px;display:flex;flex-direction:column;gap:10px;z-index:200}
.toast{padding:13px 18px;border-radius:12px;color:#fff;font-size:13.5px;font-weight:600;box-shadow:0 12px 30px rgba(0,0,0,.25);animation:slideIn .25s;min-width:200px}
.toast.success{background:var(--success)}
.toast.error{background:var(--danger)}
.toast.info{background:var(--info)}
.toast.warn{background:var(--warn)}
@keyframes slideIn{from{opacity:0;transform:translateX(20px)}to{opacity:1;transform:none}}

.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:16px}
.tab{padding:10px 15px;cursor:pointer;font-size:13.5px;font-weight:600;color:var(--ink-2);border-bottom:2px solid transparent}
.tab.active{color:var(--primary);border-bottom-color:var(--primary)}

.date-filters{display:flex;gap:6px;flex-wrap:wrap}
.chip{display:inline-flex;padding:7px 12px;border-radius:9px;border:1px solid var(--line-2);background:#fff;font-size:12.5px;font-weight:600;cursor:pointer;color:var(--ink-2)}
.chip.active{background:var(--primary);color:#fff;border-color:var(--primary)}

.pill-stat{display:flex;align-items:center;gap:10px;padding:14px 16px;border-radius:12px;border:1px solid var(--line);background:#fff}
.pill-stat .ps-ico{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:20px}
.chart-box{position:relative;height:280px}
.chart-box.sm{height:220px}

.flex{display:flex}.between{justify-content:space-between}.center{align-items:center}.gap8{gap:8px}.gap12{gap:12px}.wrap{flex-wrap:wrap}
.mt8{margin-top:8px}.mt16{margin-top:16px}.mb12{margin-bottom:12px}
.right{text-align:right}.num{font-variant-numeric:tabular-nums}
.nowrap{white-space:nowrap}
.text-sm{font-size:12px}.text-lg{font-size:16px}.fw7{font-weight:700}
.strong{font-weight:700}
.scroll-x{overflow-x:auto}

/* POS layout */
.pos{display:grid;grid-template-columns:1.6fr 1fr;gap:16px;height:calc(100vh - 150px)}
@media(max-width:980px){.pos{grid-template-columns:1fr;height:auto}}
.pos-left{display:flex;flex-direction:column;gap:12px;min-height:0}
.pos-search{display:flex;gap:10px}
.pos-search input{flex:1;padding:13px 14px;font-size:15px;border-radius:12px;border:1px solid var(--line-2)}
.pos-barcode{display:flex;gap:8px}
.pos-cat{display:flex;gap:6px;flex-wrap:wrap;overflow-x:auto;padding-bottom:4px}
.pos-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:9px;overflow-y:auto;flex:1;min-height:120px;padding-right:4px}
.pos-prod{background:#fff;border:1px solid var(--line);border-radius:12px;padding:11px;cursor:pointer;text-align:left;transition:.1s;position:relative}
.pos-prod:hover{border-color:var(--primary);box-shadow:0 4px 14px rgba(47,109,246,.15)}
.pos-prod .pp-name{font-size:13px;font-weight:700;line-height:1.25}
.pos-prod .pp-price{font-size:13px;color:var(--primary);font-weight:800;margin-top:4px}
.pos-prod .pp-stock{font-size:10.5px;color:var(--muted)}
.pos-prod.disabled{opacity:.45;pointer-events:none}
.pos-cart{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);display:flex;flex-direction:column;min-height:0;box-shadow:var(--shadow)}
.pos-cart-head{padding:14px 16px;border-bottom:1px solid var(--line);font-weight:800}
.pos-cart-items{flex:1;overflow-y:auto;padding:6px 10px}
.cart-line{display:flex;gap:10px;align-items:center;padding:10px 6px;border-bottom:1px solid var(--line)}
.cart-line .cl-name{font-weight:700;font-size:13px}
.cart-line .cl-meta{font-size:11.5px;color:var(--muted)}
.qty-ctrl{display:flex;align-items:center;gap:0}
.qty-ctrl button{width:26px;height:26px;border:1px solid var(--line-2);background:#fff;cursor:pointer;font-weight:700;border-radius:6px}
.qty-ctrl input{width:40px;text-align:center;border:1px solid var(--line-2);border-left:none;border-right:none;height:26px;font-size:13px}
.pos-cart-foot{border-top:1px solid var(--line);padding:14px 16px;background:var(--surface-2)}
.tot-row{display:flex;justify-content:space-between;font-size:13px;padding:3px 0}
.tot-row.grand{font-size:19px;font-weight:800;border-top:1px dashed var(--line-2);margin-top:6px;padding-top:9px}
.pos-actions{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}
.pos-actions .btn{flex:1}

.receipt{width:320px;font-family:"Courier New",monospace;font-size:12px;background:#fff;padding:18px}
.receipt h2{text-align:center;font-size:15px;margin:0}
.receipt .r-center{text-align:center}.receipt hr{border:none;border-top:1px dashed #999}
.pay-split-row{display:flex;gap:8px;align-items:center;margin-bottom:8px}

kbd{background:var(--surface-3);border:1px solid var(--line-2);border-bottom-width:2px;border-radius:6px;padding:1px 6px;font-size:11px;font-family:inherit}
.shortcut-row{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px solid var(--line)}

/* ---- barcode label sheet (printable) ---- */
.label-sheet{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.barcode-label{border:1px solid var(--line-2);border-radius:8px;padding:10px;text-align:center;background:#fff;min-height:96px;display:flex;flex-direction:column;justify-content:center;gap:4px}
.bl-name{font-weight:700;font-size:12px;line-height:1.2;max-height:30px;overflow:hidden}
.bl-barcode{width:100%;height:36px}
.bl-meta{display:flex;justify-content:space-between;font-size:11px;color:var(--ink-2)}
.bl-price{font-weight:700;color:var(--ink)}
.bl-code{font-family:monospace;font-size:11px}
@media print{
  .sidebar,.topbar,.modal-head,.btn,.toolbar,.date-filters{display:none !important}
  .modal,.modal-card{box-shadow:none !important;border:none !important;max-width:100% !important;width:100% !important;background:#fff}
  .label-sheet{grid-template-columns:repeat(3,1fr)}
  body{background:#fff}
}