:root{
  --bg:#f1f5f9; --surface:#ffffff; --surface-2:#f8fafc; --line:#e2e8f0; --text:#0f172a; --muted:#64748b;
  --brand:#ea580c; --brand-ink:#ffffff; --brand-soft:#fff1e8;
  --ok:#16a34a; --ok-soft:#dcfce7; --bad:#dc2626; --bad-soft:#fee2e2; --warn:#d97706; --warn-soft:#fef3c7;
  --top:#0f172a; --top-ink:#f8fafc;
  --r:14px; --shadow:0 1px 2px rgba(15,23,42,.06),0 4px 14px rgba(15,23,42,.06);
  --font:"Cairo",system-ui,-apple-system,"Segoe UI",Tahoma,sans-serif;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){--bg:#0b1120;--surface:#111827;--surface-2:#0f172a;--line:#1f2937;--text:#e5e7eb;--muted:#94a3b8;
    --brand-soft:#2a160b;--ok-soft:#052e16;--bad-soft:#3b0a0a;--warn-soft:#2d1d05;--top:#020617;
    --shadow:0 1px 2px rgba(0,0,0,.4);color-scheme:dark}
}
:root[data-theme="dark"]{--bg:#0b1120;--surface:#111827;--surface-2:#0f172a;--line:#1f2937;--text:#e5e7eb;--muted:#94a3b8;
    --brand-soft:#2a160b;--ok-soft:#052e16;--bad-soft:#3b0a0a;--warn-soft:#2d1d05;--top:#020617;
    --shadow:0 1px 2px rgba(0,0,0,.4);color-scheme:dark}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%;background:var(--bg);color:var(--text);font-family:var(--font);font-size:15px}
body{overscroll-behavior:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none;touch-action:manipulation}
input,select,textarea{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:10px 12px;width:100%;min-height:44px}
input:focus,select:focus,textarea:focus{outline:2px solid var(--brand);outline-offset:-1px}
label{display:block;font-size:13px;color:var(--muted);margin-bottom:4px;font-weight:600}
.num{font-variant-numeric:tabular-nums;direction:ltr;unicode-bidi:isolate}
.muted{color:var(--muted)} .ok{color:var(--ok)} .bad{color:var(--bad)}
.hidden{display:none!important}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:44px;padding:8px 16px;border-radius:10px;
  background:var(--surface);border:1px solid var(--line);font-weight:700;white-space:nowrap}
.btn:active{transform:scale(.97)}
.btn.primary{background:var(--brand);color:var(--brand-ink);border-color:var(--brand)}
.btn.ok{background:var(--ok);color:#fff;border-color:var(--ok)}
.btn.danger{background:var(--bad-soft);color:var(--bad);border-color:transparent}
.btn.ghost{background:transparent;border-color:transparent}
.btn.sm{min-height:36px;padding:4px 12px;font-size:14px}
.btn:disabled{opacity:.45;pointer-events:none}

/* ---------- layout ---------- */
#app{height:100%;display:flex;flex-direction:column}
.topbar{display:flex;align-items:center;gap:10px;padding:8px 12px;padding-top:max(8px,env(safe-area-inset-top));background:var(--top);color:var(--top-ink);flex:none}
.brand{font-weight:800;font-size:17px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:30vw}
.nav{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none;flex:1}
.nav::-webkit-scrollbar{display:none}
.nav button{color:#cbd5e1;padding:8px 14px;border-radius:10px;font-weight:700;white-space:nowrap;min-height:40px}
.nav button.on{background:rgba(255,255,255,.12);color:#fff}
.sync{display:flex;align-items:center;gap:6px;font-size:12px;color:#cbd5e1;white-space:nowrap}
.dot{width:9px;height:9px;border-radius:50%;background:#22c55e;flex:none}
.dot.off{background:#ef4444}.dot.wait{background:#f59e0b}
.user-btn{color:#cbd5e1;font-size:13px;padding:6px 10px;border-radius:8px;border:1px solid rgba(255,255,255,.15);white-space:nowrap}
#view{flex:1;min-height:0;overflow:auto}
.page{padding:16px;max-width:1200px;margin:0 auto}
.page h2{margin:0 0 12px;font-size:20px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:14px;box-shadow:var(--shadow)}
.row{display:flex;gap:10px;align-items:end;flex-wrap:wrap}
.row>*{flex:1;min-width:140px}
.row>.btn{flex:none}
.grid-kpi{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin-bottom:14px}
.kpi{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:12px 14px}
.kpi .l{font-size:13px;color:var(--muted);font-weight:600}
.kpi .v{font-size:24px;font-weight:800;margin-top:2px}
.kpi.good .v{color:var(--ok)} .kpi.badk .v{color:var(--bad)}
.seg{display:inline-flex;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:3px;gap:2px}
.seg button{padding:6px 14px;border-radius:8px;font-weight:700;min-height:38px}
.seg button.on{background:var(--brand);color:#fff}
.toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:12px}
.toolbar .sp{flex:1}

/* tables */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
table{width:100%;border-collapse:collapse}
th,td{padding:10px 12px;text-align:right;border-bottom:1px solid var(--line);white-space:nowrap}
th{font-size:13px;color:var(--muted);background:var(--surface-2);position:sticky;top:0}
tr:last-child td{border-bottom:0}
td.wrap{white-space:normal;min-width:180px}
tr.void td{opacity:.5;text-decoration:line-through}
.badge{display:inline-block;padding:2px 10px;border-radius:99px;font-size:12px;font-weight:700;background:var(--surface-2);border:1px solid var(--line)}
.badge.ok{background:var(--ok-soft);color:var(--ok);border-color:transparent}
.badge.bad{background:var(--bad-soft);color:var(--bad);border-color:transparent}
.badge.warn{background:var(--warn-soft);color:var(--warn);border-color:transparent}
.bar{height:10px;border-radius:5px;background:var(--brand);min-width:2px}
.empty{padding:30px;text-align:center;color:var(--muted)}

/* ---------- POS ---------- */
.pos{display:grid;grid-template-columns:1fr 380px;height:100%;min-height:0}
.pos-main{display:flex;flex-direction:column;min-height:0;min-width:0}
.pos-head{display:flex;gap:8px;padding:10px 12px 0;flex:none}
.pos-head input{flex:1;min-height:46px;font-size:16px}
.cats{display:flex;gap:6px;overflow-x:auto;padding:10px 12px;flex:none;scrollbar-width:none}
.cats::-webkit-scrollbar{display:none}
.cats button{padding:8px 16px;border-radius:99px;background:var(--surface);border:1px solid var(--line);font-weight:700;white-space:nowrap;min-height:42px}
.cats button.on{background:var(--text);color:var(--bg);border-color:var(--text)}
.products{flex:1;overflow-y:auto;padding:0 12px 12px;display:grid;grid-template-columns:repeat(auto-fill,minmax(132px,1fr));gap:10px;align-content:start}
.p{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:12px 10px 10px;min-height:96px;
  display:flex;flex-direction:column;justify-content:space-between;text-align:right;box-shadow:var(--shadow);border-top:5px solid var(--c,#94a3b8);
  user-select:none;transition:transform .06s}
.p:active{transform:scale(.95);background:var(--brand-soft)}
.p .n{font-weight:800;font-size:16px;line-height:1.3}
.p .pr{font-weight:700;color:var(--muted);font-size:14px}
.p .q{position:absolute;top:6px;left:6px;background:var(--brand);color:#fff;border-radius:99px;min-width:26px;height:26px;display:grid;place-items:center;font-weight:800;font-size:14px;padding:0 6px}
.cart{background:var(--surface);border-inline-start:1px solid var(--line);display:flex;flex-direction:column;min-height:0}
.cart-head{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-bottom:1px solid var(--line);flex:none}
.cart-head b{font-size:17px}
.next-no{font-size:13px;color:var(--muted)}
.lines{flex:1;overflow-y:auto;padding:6px 10px}
.line{display:grid;grid-template-columns:1fr auto auto;gap:8px;align-items:center;padding:8px 4px;border-bottom:1px dashed var(--line)}
.line .ln{font-weight:700}
.line .lp{font-size:13px;color:var(--muted)}
.qty{display:flex;align-items:center;gap:2px;background:var(--surface-2);border:1px solid var(--line);border-radius:10px}
.qty button{width:38px;height:38px;font-size:20px;font-weight:800;border-radius:9px}
.qty button:active{background:var(--line)}
.qty span{min-width:26px;text-align:center;font-weight:800}
.line .lt{font-weight:800;min-width:70px;text-align:left}
.cart-foot{border-top:1px solid var(--line);padding:12px 14px;padding-bottom:max(12px,env(safe-area-inset-bottom));flex:none;display:grid;gap:10px}
.sum{display:flex;justify-content:space-between;align-items:baseline}
.sum .t{font-size:30px;font-weight:800}
.sum.small{font-size:14px;color:var(--muted)}
.pay{min-height:64px;font-size:21px;border-radius:14px}
.foot-btns{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px}
.cart-bar{display:none}
.cart-close{display:none}
.kbd{color:#fed7aa;font-size:13px}

@media (max-width:820px){
  .pos{grid-template-columns:1fr}
  .products{grid-template-columns:repeat(auto-fill,minmax(110px,1fr));gap:8px;padding-bottom:96px}
  .p{min-height:84px;padding:10px 8px 8px}
  .p .n{font-size:15px}
  .cart{position:fixed;inset:0;z-index:30;transform:translateY(100%);transition:transform .18s ease;border:0}
  .cart.open{transform:none}
  .cart-close{display:inline-flex}
  .cart-bar{display:flex;position:fixed;bottom:0;inset-inline:0;z-index:20;gap:8px;padding:10px 12px;padding-bottom:max(10px,env(safe-area-inset-bottom));
    background:var(--surface);border-top:1px solid var(--line);box-shadow:0 -4px 14px rgba(0,0,0,.08)}
  .cart-bar .btn{flex:1;min-height:56px;font-size:17px}
  .cart-bar .btn.primary{flex:1.4}
  .brand{display:none}
  .kbd{display:none}
  .sync .lbl{display:none}
  .page{padding:12px}
}

/* ---------- login / setup ---------- */
.center{min-height:100%;display:grid;place-items:center;padding:20px}
.login{width:100%;max-width:420px;display:grid;gap:14px}
.login h1{margin:0;font-size:26px;text-align:center}
.logo{width:72px;height:72px;margin:0 auto;border-radius:20px;background:var(--brand);display:grid;place-items:center;color:#fff;font-size:34px;font-weight:800}
.pin{font-size:28px;text-align:center;letter-spacing:10px}
.keypad{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.keypad button{min-height:60px;font-size:24px;font-weight:800;background:var(--surface);border:1px solid var(--line);border-radius:12px}
.keypad button:active{background:var(--brand-soft)}
.choice{display:grid;gap:10px}
.choice button{text-align:right;padding:16px;border-radius:var(--r);background:var(--surface);border:2px solid var(--line)}
.choice button.on{border-color:var(--brand);background:var(--brand-soft)}
.choice b{display:block;font-size:17px}

/* ---------- modal & toast ---------- */
.modal{position:fixed;inset:0;z-index:50;background:rgba(2,6,23,.55);display:grid;place-items:center;padding:16px}
.modal[hidden]{display:none}
.dialog{background:var(--surface);border-radius:18px;width:100%;max-width:460px;max-height:90vh;overflow:auto;padding:18px;display:grid;gap:12px;box-shadow:0 20px 50px rgba(0,0,0,.3)}
.dialog h3{margin:0;font-size:19px}
.dialog .acts{display:flex;gap:8px;justify-content:flex-start;flex-wrap:wrap;margin-top:4px}
.dialog .acts .btn{flex:1}
.toast{position:fixed;top:70px;left:50%;transform:translate(-50%,-20px);opacity:0;z-index:60;pointer-events:none;
  background:var(--text);color:var(--bg);padding:12px 22px;border-radius:12px;font-weight:800;font-size:17px;transition:.15s;box-shadow:0 10px 30px rgba(0,0,0,.25);max-width:90vw;text-align:center}
.toast.show{opacity:1;transform:translate(-50%,0)}
.toast.err{background:var(--bad);color:#fff}
.toast.good{background:var(--ok);color:#fff}
#printFrame{position:fixed;width:0;height:0;border:0;right:-10px;bottom:-10px;visibility:hidden}

.chips{display:flex;flex-wrap:wrap;gap:6px}
.chips button{padding:6px 12px;border-radius:99px;background:var(--surface-2);border:1px solid var(--line);font-weight:600;min-height:38px}
.chips button.on{background:var(--brand);color:#fff;border-color:var(--brand)}
.sec{margin-top:18px}
.sec h3{font-size:16px;margin:0 0 8px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media (max-width:820px){.two{grid-template-columns:1fr}}
.swatch{width:18px;height:18px;border-radius:50%;display:inline-block;vertical-align:middle;border:1px solid var(--line)}