:root{
  --navy:#0f2a4a; --blue:#206bc4; --blue-d:#185698; --orange:#c2410c;
  --ok:#16a34a; --warn:#f59e0b; --bad:#dc2626; --bg:#f3f5f8; --card:#fff;
  --t:#0f172a; --mu:#64748b; --bd:#e2e8f0; --pl:#e8f1fb; --r:12px;
}
*{box-sizing:border-box}html,body{margin:0;padding:0;min-height:100%}
html,body{overflow-x:hidden}body{font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--t);font-size:15px;line-height:1.4;-webkit-tap-highlight-color:transparent}
img{max-width:100%;height:auto;display:block;object-fit:contain}
button,input,select,textarea{font:inherit}
button{cursor:pointer;border:0;border-radius:10px;padding:10px 14px;font-weight:600;background:var(--blue);color:#fff}
button:hover{background:var(--blue-d)}button:disabled{opacity:.45;cursor:not-allowed}
button.alt{background:#fff;color:var(--t);border:1px solid var(--bd)}
button.ghost{background:transparent;color:var(--blue);border:1px solid transparent}
button.danger{background:var(--bad)}button.ok{background:var(--ok)}button.warn{background:var(--orange)}
button.big{padding:14px 18px;font-size:16px;width:100%}
input,select{width:100%;padding:11px 12px;border:1px solid #cbd5e1;border-radius:10px;background:#fff;margin:0}
input:focus,select:focus{outline:2px solid #bfdbfe;border-color:var(--blue)}
.hidden{display:none!important}
.offline-banner{position:sticky;top:0;z-index:100;background:#7c2d12;color:#fff;text-align:center;padding:8px 12px;font-size:13px;font-weight:600}
.demo-pill{display:inline-block;background:var(--orange);color:#fff;font-size:10px;font-weight:700;padding:2px 7px;border-radius:4px;letter-spacing:.03em;vertical-align:middle}
/* Login */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;background:linear-gradient(160deg,#0b1220 0%,var(--navy) 55%,#163a66 100%)}
.login-card{width:100%;max-width:420px;background:var(--card);border-radius:16px;padding:28px 24px;box-shadow:0 20px 50px #0005}
.login-card .brand{display:flex;align-items:center;gap:12px;margin-bottom:8px}
.login-card .brand img.brand-mark,.login-card .brand-mark{height:44px;width:44px;border-radius:10px;flex-shrink:0}
.login-card .brand h1,.login-card h1{margin:0;font-size:22px;color:var(--navy)}
.login-card .sub{color:var(--mu);font-size:13px;margin-bottom:18px}
.login-card label{display:block;font-size:12px;font-weight:600;color:var(--mu);margin:12px 0 6px;text-transform:uppercase;letter-spacing:.04em}
.pin-row{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:14px}
.pin-row button{padding:16px;font-size:20px;background:#f1f5f9;color:var(--t)}
.pin-display{letter-spacing:8px;font-size:28px;text-align:center;padding:12px;background:#f8fafc;border-radius:10px;border:1px solid var(--bd);min-height:52px;font-weight:700}
.err{color:var(--bad);font-size:13px;margin-top:8px}
/* Shell */
.shell{display:flex;flex-direction:column;min-height:100vh;max-width:1400px;margin:0 auto;min-width:0;overflow-x:hidden;width:100%}
.topbar{display:flex;align-items:center;gap:10px;padding:10px 14px;background:var(--navy);color:#fff;position:sticky;top:0;z-index:40;flex-wrap:wrap;min-width:0;overflow:hidden}
.topbar .brand-img,.topbar .brand-mark{height:28px;width:28px;border-radius:6px;flex-shrink:0}
.topbar .title{font-weight:700;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar .sp{flex:1}
.topbar .meta{font-size:12px;opacity:.85;display:flex;gap:8px;flex-wrap:wrap;align-items:center;min-width:0;max-width:100%}.topbar .meta span{max-width:100%;overflow:hidden;text-overflow:ellipsis}
.topbar button{background:#ffffff22;color:#fff;padding:8px 12px;font-size:13px}
.topbar button:hover{background:#ffffff33}
.navtabs{display:flex;gap:4px;padding:8px 10px;background:#fff;border-bottom:1px solid var(--bd);overflow-x:auto;-webkit-overflow-scrolling:touch}
.navtabs button{background:transparent;color:var(--mu);padding:8px 12px;white-space:nowrap;flex-shrink:0}
.navtabs button.on{background:var(--pl);color:var(--blue)}
main.panel{flex:1;padding:12px;min-width:0;overflow-x:hidden;width:100%}
/* Till layout */
.till{display:grid;grid-template-columns:minmax(0,1fr);gap:12px;align-items:start;min-width:0;width:100%;max-width:100%}
@media(min-width:900px){.till{grid-template-columns:1fr minmax(0,360px)}}
.till > div{min-width:0;max-width:100%;overflow-x:hidden}
.till-tools{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px;min-width:0;width:100%;max-width:100%}
.till-tools input{flex:1 1 120px;min-width:0;max-width:100%}
.till-tools button,.till-tools select{flex:0 0 auto;max-width:100%}
.cat-row{display:flex;flex-wrap:nowrap;gap:6px;overflow-x:auto;overflow-y:hidden;padding-bottom:8px;margin-bottom:8px;-webkit-overflow-scrolling:touch;width:100%;max-width:100%;min-width:0;scrollbar-width:thin}
.cat-row button{flex:0 0 auto;background:#fff;color:var(--t);border:1px solid var(--bd);padding:8px 12px;font-size:13px;white-space:nowrap}
.cat-row button.on{background:var(--navy);color:#fff;border-color:var(--navy)}
.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;width:100%;max-width:100%}
@media(min-width:768px){.grid{grid-template-columns:repeat(auto-fill,minmax(130px,1fr))}}
@media(min-width:1100px){.grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr))}}
.pcard{background:#fff;border:1px solid var(--bd);border-radius:12px;padding:10px;text-align:left;color:var(--t);display:flex;flex-direction:column;gap:4px;min-height:100px;width:100%;overflow:hidden}
.pcard:hover{border-color:var(--blue);box-shadow:0 4px 14px #0f2a4a14}
.pcard .nm{font-weight:600;font-size:13px;line-height:1.25;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pcard .pr{color:var(--blue);font-weight:700;font-size:15px}
.pcard .st{font-size:11px;color:var(--mu)}
.pcard .st.low{color:var(--bad);font-weight:600}
/* Cart */
.cart{background:#fff;border:1px solid var(--bd);border-radius:14px;padding:12px;position:sticky;top:64px;max-height:calc(100vh - 80px);overflow:auto;min-width:0;width:100%}
.cart h2{margin:0 0 10px;font-size:16px;display:flex;align-items:center;gap:8px}
.cart-empty{color:var(--mu);text-align:center;padding:24px 8px;font-size:13px}
.cline{display:grid;grid-template-columns:1fr auto;gap:4px 8px;padding:8px 0;border-bottom:1px solid #f1f5f9;font-size:13px}
.cline .qty{display:flex;align-items:center;gap:6px}
.cline .qty button{padding:4px 10px;background:#f1f5f9;color:var(--t);font-size:14px}
.ctotals{margin-top:10px;font-size:14px}
.ctotals .row{display:flex;justify-content:space-between;padding:4px 0}
.ctotals .grand{font-size:20px;font-weight:800;color:var(--navy);padding-top:8px;border-top:1px dashed var(--bd);margin-top:6px}
.cart-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:12px}
.cart-actions button.pay{grid-column:1/-1}
.dual{font-size:11px;color:var(--mu)}
/* Modals */
.modal-bg{position:fixed;inset:0;background:#0f172a99;z-index:80;display:flex;align-items:flex-end;justify-content:center;padding:12px}
@media(min-width:640px){.modal-bg{align-items:center}}
.modal{background:#fff;border-radius:16px 16px 12px 12px;width:100%;max-width:480px;max-height:92vh;overflow:auto;padding:18px}
.modal h3{margin:0 0 12px;font-size:18px}
.pay-methods{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:10px 0;min-width:0}
@media(max-width:380px){.pay-methods{grid-template-columns:1fr}}
.pay-methods button{padding:14px;background:#f8fafc;color:var(--t);border:2px solid var(--bd);text-align:left}
.pay-methods button.on{border-color:var(--blue);background:var(--pl)}
.pay-methods button.soon{opacity:.45;position:relative}
.pay-methods button.soon::after{content:"Coming soon";position:absolute;top:6px;right:6px;font-size:9px;background:#94a3b8;color:#fff;padding:2px 5px;border-radius:4px}
.change-box{background:#ecfdf5;border:1px solid #a7f3d0;border-radius:10px;padding:12px;margin:10px 0;font-weight:700;color:#065f46}
.split-list{margin:8px 0;font-size:13px}
.split-list div{display:flex;justify-content:space-between;padding:4px 0}
/* Receipt */
.receipt{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12px;background:#fff;border:1px dashed #94a3b8;padding:14px;border-radius:8px;max-width:320px;margin:0 auto}
.receipt.w80{max-width:300px}.receipt.w58{max-width:220px;font-size:11px}
.receipt .center{text-align:center}.receipt .line{border-top:1px dashed #94a3b8;margin:8px 0}
.receipt .row{display:flex;justify-content:space-between;gap:8px}
.fiscal{background:#fff7ed;color:#9a3412;border:1px solid #fed7aa;border-radius:6px;padding:6px 8px;font-size:10px;margin-top:8px;text-align:center;font-weight:700}
/* Back office */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;margin-bottom:14px}
.stat{background:#fff;border:1px solid var(--bd);border-radius:12px;padding:14px}
.stat .lbl{font-size:11px;color:var(--mu);text-transform:uppercase;letter-spacing:.04em;font-weight:600}
.stat .val{font-size:22px;font-weight:800;color:var(--navy);margin-top:4px;word-break:break-word}
.box{background:#fff;border:1px solid var(--bd);border-radius:12px;padding:14px;margin-bottom:12px;overflow:auto}
.box h3{margin:0 0 10px;font-size:15px}
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{padding:8px 10px;text-align:left;border-bottom:1px solid #f1f5f9;vertical-align:middle}
th{font-size:11px;text-transform:uppercase;color:var(--mu);letter-spacing:.03em}
.tag{display:inline-block;padding:2px 8px;border-radius:999px;background:#f1f5f9;font-size:11px;font-weight:600}
.tag.ok{background:#dcfce7;color:#166534}.tag.warn{background:#fef3c7;color:#92400e}.tag.bad{background:#fee2e2;color:#991b1b}
.scan-video{width:100%;max-height:240px;background:#000;border-radius:10px;object-fit:cover}
.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:var(--navy);color:#fff;padding:10px 16px;border-radius:999px;font-size:13px;z-index:90;box-shadow:0 8px 24px #0004}
/* Prevent horizontal overflow at phone widths */
body, .shell, main, .till, .cart, .modal, .grid, .pcard{max-width:100%}
@media(max-width:412px){
  .topbar .title{font-size:13px}
  .pcard{min-height:90px;padding:8px}
  .till-tools{flex-wrap:wrap}
}
@media(max-width:360px){
  .topbar .meta{display:none}
}