:root{--accent:#2563eb;--accent2:#2563eb;--bg:#f1f5f9;--panel:#fff;--input:#fff;--chip:#e8eef5;--hover:#f8fafc;--ink:#0f172a;--muted:#64748b;--line:#dbe3ec;--ok:#16a34a;--bad:#dc2626;--tagbg:#e0e7ff;--tagfg:#3730a3;--r:10px;color-scheme:light}
html[data-theme="dark"]{--bg:#0b1220;--panel:#151e2e;--input:#0f1726;--chip:#222d40;--hover:#1c2739;--ink:#e6edf6;--muted:#93a1b5;--line:#2b3a50;--tagbg:#26325a;--tagfg:#c7d2fe;--ok:#22c55e;--bad:#f87171;color-scheme:dark}
*{box-sizing:border-box}html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.35 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;display:flex;flex-direction:column;overflow:hidden}
.muted{color:var(--muted)}.err{color:var(--bad);min-height:1.2em;margin:6px 0}.hint{color:var(--muted);padding:18px}
.btn{border:1px solid var(--line);background:var(--panel);color:var(--ink);border-radius:8px;padding:8px 14px;font:inherit;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:6px;line-height:1.2}
.btn:hover{border-color:var(--accent)}.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn.small{padding:4px 10px;font-size:13px}
.btn.big{padding:14px 22px;font-size:17px}.btn.huge{width:100%;padding:18px;font-size:20px;font-weight:700}
input,select{font:inherit;border:1px solid var(--line);border-radius:8px;padding:9px 11px;background:var(--input);color:var(--ink);width:100%}
input:focus{outline:2px solid var(--accent);outline-offset:-1px}
label{display:block;font-size:13px;color:var(--muted);margin:8px 0}label input{margin-top:4px;color:var(--ink)}
.top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 14px;background:var(--panel);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px}.brand img{max-height:34px;max-width:110px}.brand b{font-size:17px}
.top-actions{display:flex;align-items:center;gap:8px}.who{color:var(--muted);font-size:13px}
.pos{flex:1;min-height:0;display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:12px;padding:12px}
.left,.right{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:12px;min-height:0;display:flex;flex-direction:column}
.scanbar{display:flex;gap:8px}.scanbar input{font-size:18px;padding:12px 14px;border:2px solid var(--accent)}
.chips{display:flex;gap:6px;overflow-x:auto;padding:10px 0 6px;flex:none}
.chip{border:1px solid var(--line);background:var(--panel);color:var(--ink);border-radius:999px;padding:6px 12px;white-space:nowrap;cursor:pointer;font:inherit}
.chip.on{background:var(--accent);color:#fff;border-color:var(--accent)}
.results{flex:1;min-height:0;overflow:auto;margin-top:6px}
.item{display:grid;grid-template-columns:48px 120px 1fr auto;gap:10px;align-items:center;padding:8px 10px;border-bottom:1px solid var(--line);cursor:pointer}
.item:hover{background:var(--hover)}.item .sku{font-weight:600}.item .price{font-weight:700;white-space:nowrap}
.item .sub{font-size:12px;color:var(--muted)}.tag{display:inline-block;font-size:11px;padding:1px 6px;border-radius:6px;background:var(--tagbg);color:var(--tagfg);margin-left:4px}
.cart-head{display:flex;justify-content:space-between;align-items:center}.cart-head h2{margin:0;font-size:17px}
.cart{flex:1;min-height:0;overflow:auto;margin:8px 0;border-top:1px solid var(--line)}
.cart .empty{color:var(--muted);padding:20px;text-align:center}
.line{display:grid;grid-template-columns:1fr auto;gap:4px 8px;padding:8px 2px;border-bottom:1px solid var(--line)}
.line .nm{font-weight:600}.line .meta{font-size:12px;color:var(--muted);grid-column:1/2}.line .lt{font-weight:700;text-align:right}
.line .ctl{display:flex;align-items:center;gap:6px;grid-column:1/3}.qty{min-width:34px;text-align:center;font-weight:700}
.qbtn{width:30px;height:30px;padding:0}.rm{margin-left:auto;color:var(--bad)}
.totals{border-top:1px solid var(--line);padding-top:8px}.totals div{display:flex;justify-content:space-between;padding:3px 0}
.totals .grand{font-size:24px;font-weight:800;padding-top:6px}
.right .huge{margin-top:8px}
.modal{position:fixed;inset:0;background:rgba(15,23,42,.55);display:flex;align-items:center;justify-content:center;z-index:50;padding:12px}.modal[hidden]{display:none}
.dialog{background:var(--panel);color:var(--ink);border-radius:14px;padding:18px;width:100%;max-width:420px;max-height:96vh;overflow:auto}.dialog.wide{max-width:560px}.dialog.center{text-align:center}
.dialog h3{margin:0 0 6px}.dlg-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:12px;position:sticky;bottom:-18px;background:var(--panel);padding:10px 0 4px}.two{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.due,.due2{display:flex;justify-content:space-between;align-items:baseline;font-size:15px}.due b{font-size:32px}.due2 b{font-size:22px}
.methods,.quick{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0}.methods .btn{flex:1;min-width:90px}
.keypad{display:none;grid-template-columns:repeat(3,1fr);gap:8px;margin:8px 0}.keypad .btn{padding:16px;font-size:20px}
.paylist .row{display:flex;justify-content:space-between;align-items:center;padding:6px 0;border-bottom:1px solid var(--line)}
.tick{width:72px;height:72px;line-height:72px;border-radius:50%;background:var(--ok);color:#fff;font-size:42px;margin:0 auto 8px}.change{font-size:34px;font-weight:800;margin:8px 0}
.toast{position:fixed;left:50%;bottom:22px;transform:translateX(-50%);background:#0f172a;color:#fff;padding:10px 18px;border-radius:999px;z-index:60;max-width:90vw}
.toast.bad{background:var(--bad)}
.alert{background:#fee2e2;color:#991b1b;padding:10px 12px;border-radius:8px;margin-bottom:10px}
.login-body{align-items:center;justify-content:center;overflow:auto}.login-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:26px;width:340px;max-width:92vw}
.login-card h1{font-size:20px;margin:6px 0 14px}.login-card .btn{width:100%;margin-top:8px}.login-logo img{max-height:50px;max-width:160px}
/* Mouse layout (default): compact */
body.mode-mouse .item .tile-only{display:none}
/* Touch layout: big targets, tiles, keypad */
body.mode-touch{font-size:17px}
body.mode-touch .btn{padding:14px 18px;min-height:52px}body.mode-touch .btn.small{min-height:44px}body.mode-touch .qbtn{width:48px;height:48px}
body.mode-touch .chip{padding:14px 20px;font-size:17px}
body.mode-touch .results{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:10px;align-content:start}
body.mode-touch .item{display:flex;flex-direction:column;align-items:stretch;justify-content:space-between;gap:6px;min-height:120px;border:1px solid var(--line);border-radius:12px;padding:12px}
body.mode-touch .item .price{font-size:19px}
body.mode-touch .keypad{display:grid}body.mode-touch .scanbar input{font-size:20px;padding:16px}
body.mode-touch .pos{grid-template-columns:minmax(0,1fr) 400px}
@media (max-width:900px){body{overflow:auto}.pos{grid-template-columns:1fr;display:block}.right{margin-top:12px}.left{min-height:50vh}}

/* Product thumbnails: initials show underneath, the picture covers them when it loads. */
.th{position:relative;display:grid;place-items:center;background:var(--chip);color:var(--muted);font-weight:700;border-radius:8px;overflow:hidden;flex:none;width:48px;height:48px;font-size:14px}
.th img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;background:#fff}
body.mode-touch .th{width:100%;height:96px;font-size:26px;border-radius:8px}
body.mode-touch .item{min-height:170px}
.hint{color:var(--muted)}
.refund-wrap{max-width:900px;margin:16px auto;padding:0 12px}.refund-wrap .panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:14px;margin-bottom:12px}
.refund-wrap table{width:100%;border-collapse:collapse}.refund-wrap td,.refund-wrap th{padding:8px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}.refund-wrap th{font-size:13px;color:var(--muted)}
.refund-wrap .num{text-align:right}.rq{width:80px}.sale-pick{display:flex;justify-content:space-between;padding:10px;border:1px solid var(--line);border-radius:8px;margin:6px 0;cursor:pointer}.sale-pick:hover{border-color:var(--accent)}
.neg{color:var(--bad)}