:root{
  --bg:#f6f2ee; --card:#fff; --ink:#2a211b; --muted:#7a6b60; --line:#e4dcd4;
  --brand:#5a3a22; --brand2:#8a5a36; --ok:#1f7a4d; --warn:#b26a00; --bad:#b3261e;
  --r:12px; --nav:62px;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.4 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
body{padding-bottom:calc(var(--nav) + env(safe-area-inset-bottom))}
header#top{position:sticky;top:0;z-index:5;display:flex;justify-content:space-between;align-items:center;
  padding:10px 16px;background:var(--brand);color:#fff}
.brand{font-weight:800;letter-spacing:.5px}.brand span{font-weight:400;opacity:.85}
#who{font-size:13px;opacity:.9;text-align:right}
#who button{background:none;border:1px solid #ffffff66;color:#fff;border-radius:8px;padding:3px 8px;margin-left:6px;font-size:12px}
main{max-width:980px;margin:0 auto;padding:14px 16px}
nav#nav{position:fixed;left:0;right:0;bottom:0;z-index:5;display:flex;background:#fff;border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom)}
nav#nav a{flex:1;text-align:center;padding:8px 2px 6px;color:var(--muted);text-decoration:none;font-size:11px;min-height:var(--nav)}
nav#nav a b{display:block;font-size:20px;line-height:26px}
nav#nav a.on{color:var(--brand);font-weight:700}
h1{font-size:20px;margin:4px 0 12px}h2{font-size:16px;margin:18px 0 8px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:14px;margin-bottom:12px}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end}.row>*{flex:1 1 140px}
.grow{flex:3 1 220px}
label{display:block;font-size:12px;color:var(--muted);margin:0 0 4px}
input,select,textarea{width:100%;font:inherit;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:2px solid var(--brand2);border-color:transparent}
button,.btn{font:inherit;font-weight:600;border:0;border-radius:10px;padding:11px 14px;background:var(--brand);color:#fff;cursor:pointer;
  text-decoration:none;display:inline-block;text-align:center}
button.sec,.btn.sec{background:#efe7df;color:var(--brand)}
button.ok{background:var(--ok)}button.bad{background:var(--bad)}
button.sm{padding:6px 10px;font-size:13px}
button:disabled{opacity:.5}
.big{font-size:17px;padding:14px 16px;width:100%}
.muted{color:var(--muted)}.small{font-size:12px}
.pill{display:inline-block;padding:2px 8px;border-radius:99px;background:#efe7df;font-size:12px;color:var(--brand)}
.pill.bad{background:#fbe3e1;color:var(--bad)}.pill.ok{background:#dff2e8;color:var(--ok)}.pill.warn{background:#fff0d6;color:var(--warn)}
.scanbar{display:flex;gap:8px}.scanbar input{font-size:18px;letter-spacing:1px}
.scanbar button{flex:0 0 auto}
#cam{position:relative;background:#000;border-radius:var(--r);overflow:hidden;margin-top:10px}
#cam video{width:100%;max-height:48vh;object-fit:cover;display:block}
#cam .aim{position:absolute;left:10%;right:10%;top:45%;height:2px;background:#ff3b30;box-shadow:0 0 8px #ff3b30}
.prod{display:flex;gap:12px;justify-content:space-between;align-items:flex-start}
.prod .t{font-weight:700;font-size:17px}
.prices{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:10px 0}
.prices div{background:var(--bg);border-radius:10px;padding:8px 10px}
.prices b{display:block;font-size:20px}
.prices .sel{outline:2px solid var(--brand2)}
table{width:100%;border-collapse:collapse}
th,td{text-align:left;padding:8px 6px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:12px;color:var(--muted);font-weight:600}
td.n,th.n{text-align:right;white-space:nowrap}
.list-item{display:flex;justify-content:space-between;gap:10px;padding:10px 0;border-bottom:1px solid var(--line);cursor:pointer}
.list-item:last-child{border-bottom:0}
.qty{display:flex;align-items:center;gap:6px}
.qty button{width:34px;height:34px;padding:0;font-size:18px}
.qty input{width:56px;text-align:center;padding:6px}
.total{font-size:22px;font-weight:800;text-align:right}
.seg{display:flex;background:#efe7df;border-radius:10px;padding:3px}
.seg button{flex:1;background:none;color:var(--brand);padding:9px}
.seg button.on{background:#fff;box-shadow:0 1px 3px #0002}
.kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:10px}
.kpi{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:12px}
.kpi b{display:block;font-size:20px}
.kpi span{font-size:12px;color:var(--muted)}
.bar{height:8px;background:var(--brand2);border-radius:4px}
#toast{position:fixed;left:50%;bottom:calc(var(--nav) + 16px);transform:translateX(-50%);z-index:20;max-width:92vw}
#toast div{background:#2a211b;color:#fff;padding:10px 14px;border-radius:10px;margin-top:6px;box-shadow:0 4px 16px #0003}
#toast div.err{background:var(--bad)}#toast div.ok{background:var(--ok)}
#modal{position:fixed;inset:0;background:#0006;z-index:10;display:flex;align-items:flex-end;justify-content:center}
#modal.hidden{display:none}
.modal-box{background:#fff;width:100%;max-width:640px;max-height:92vh;overflow:auto;border-radius:16px 16px 0 0;padding:16px}
@media(min-width:700px){#modal{align-items:center}.modal-box{border-radius:16px}}
.actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.actions>*{flex:1 1 auto}
.lbl-prev{background:#fff;border:1px dashed #bbb;display:inline-block}
.center{text-align:center}
.warnbox{background:#fff0d6;border:1px solid #f0cf94;color:#6b4300;border-radius:10px;padding:10px 12px;font-size:13px}
.login{max-width:380px;margin:8vh auto}
.loading{padding:40px;text-align:center;color:var(--muted)}
.chk{display:flex;align-items:center;gap:8px}.chk input{width:auto}
.rc .c{text-align:center}.rc .b{font-weight:700}.rc .s{font-size:12px;color:var(--muted)}.rc table{width:100%}.rc td{border:0;padding:2px 0}.rc hr{border:0;border-top:1px dashed #bbb}
.chips{display:flex;flex-wrap:wrap;gap:6px}.chips button{background:#efe7df;color:var(--brand);padding:8px 12px;font-weight:600}.chips button.on{background:var(--brand);color:#fff}