:root{
  --red:#ED2024; --red-dark:#c4171b; --ink:#16181d; --ink-2:#374151; --muted:#6b7280; --muted-2:#9aa1ab;
  --line:#e5e7eb; --line-2:#f1f2f4; --border:#d1d5db; --bg:#f4f5f7; --card:#fff; --field:#fff;
  --soft:#f9fafb; --hover:#f3f4f6; --row-hover:#fafafa;
  --ok:#0f8a4d; --ok-bg:#e6f6ed; --ok-row:#f3fbf6;
  --warn:#b45309; --warn-bg:#fef3c7; --bad:#b91c1c; --bad-bg:#fee2e2;
  --indigo:#3730a3; --indigo-bg:#e0e7ff; --purple:#6b21a8; --purple-bg:#f3e8ff;
  --radius:10px; --shadow:0 1px 3px rgba(16,24,40,.08),0 1px 2px rgba(16,24,40,.04);
  --shadow-lg:0 8px 24px rgba(16,24,40,.16);
}
/* Dark theme. data-theme is set on <html> before first paint (inline script in index.html);
   the toggle sits under the user name in the nav. */
:root[data-theme="dark"]{
  color-scheme:dark;
  --red:#f03a3e; --red-dark:#d42327; --ink:#e7e9ee; --ink-2:#cfd3da; --muted:#9aa1ad; --muted-2:#6b7280;
  --line:#2a2e36; --line-2:#23272e; --border:#3a3f49; --bg:#121417; --card:#1b1e24; --field:#15181d;
  --soft:#22262d; --hover:#262a32; --row-hover:#20242b;
  --ok:#3fcf7f; --ok-bg:#12321f; --ok-row:#15271c;
  --warn:#f0b040; --warn-bg:#3a2a0c; --bad:#ff6b6b; --bad-bg:#3d1717;
  --indigo:#a5b4fc; --indigo-bg:#1f2447; --purple:#d8b4fe; --purple-bg:#2f1a45;
  --shadow:0 1px 3px rgba(0,0,0,.4),0 1px 2px rgba(0,0,0,.3); --shadow-lg:0 8px 24px rgba(0,0,0,.5);
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{font:15px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased}
a{color:var(--red);text-decoration:none}
h1,h2,h3{margin:0;font-weight:650;letter-spacing:-.01em}
h1{font-size:22px}h2{font-size:17px}h3{font-size:14px}

/* ---------- login ---------- */
#login{position:fixed;inset:0;display:grid;place-items:center;background:var(--bg);z-index:50}
#login .box{background:var(--card);padding:32px;border-radius:14px;box-shadow:var(--shadow);
  width:340px;max-width:92vw}
#login .brand{display:block;width:150px;height:auto;margin-bottom:8px}
#login .sub{color:var(--muted);font-size:13px;margin-bottom:22px}

/* ---------- cards / grid ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;box-shadow:var(--shadow)}
.card+.card{margin-top:16px}
.card>h2{margin-bottom:4px}
.card .hint{color:var(--muted);font-size:13px;margin:0 0 16px}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(158px,1fr))}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.stat .n{font-size:27px;font-weight:700;letter-spacing:-.02em}
.stat .l{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.07em;margin-top:2px}
.stat.alert .n{color:var(--bad)}

/* ---------- forms ---------- */
label{display:block;font-size:12.5px;font-weight:600;color:var(--ink-2);margin:0 0 5px}
input,select,textarea{width:100%;padding:11px 12px;border:1px solid var(--border);border-radius:8px;
  font:inherit;background:var(--field);color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:2px solid var(--red);outline-offset:-1px;
  border-color:var(--red)}
input.scan{font:600 19px/1.2 ui-monospace,Consolas,monospace;letter-spacing:.04em;padding:14px}
input[readonly]{background:var(--soft);color:var(--muted)}
.row{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));
  align-items:end;margin-bottom:14px}
.row.tight{grid-template-columns:1fr auto}
button{font:600 14px/1 inherit;padding:12px 20px;border:0;border-radius:8px;background:var(--red);
  color:#fff;cursor:pointer;white-space:nowrap}
button:hover{background:var(--red-dark)}
button:disabled{opacity:.5;cursor:not-allowed}
button.ghost{background:var(--card);color:var(--ink-2);border:1px solid var(--border)}
button.ghost:hover{background:var(--hover)}
button.sm{padding:7px 12px;font-size:12.5px}
.actions{display:flex;gap:10px;flex-wrap:wrap}

/* ---------- feedback ---------- */
.msg{padding:13px 16px;border-radius:8px;margin-bottom:16px;font-size:14px;font-weight:500;
  display:flex;gap:10px;align-items:flex-start}
.msg.ok{background:var(--ok-bg);color:var(--ok)}
.msg.err{background:var(--bad-bg);color:var(--bad)}
.msg.warn{background:var(--warn-bg);color:var(--warn)}
.msg b{font-weight:750}
#toast{position:fixed;right:20px;bottom:20px;z-index:60;display:flex;flex-direction:column;gap:8px}
#toast .t{padding:13px 18px;border-radius:9px;box-shadow:var(--shadow-lg);
  font-weight:600;font-size:14px;max-width:380px;animation:pop .18s ease}
#toast .t.ok{background:var(--ok);color:#fff}
#toast .t.err{background:var(--bad);color:#fff}
@keyframes pop{from{opacity:0;transform:translateY(8px)}}

/* ---------- tables ---------- */
table{width:100%;border-collapse:collapse;font-size:13.5px}
th{text-align:left;font-size:11px;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);
  padding:8px 10px;border-bottom:1px solid var(--line);font-weight:650;white-space:nowrap}
td{padding:10px;border-bottom:1px solid var(--line-2);vertical-align:middle}
tr:last-child td{border-bottom:0}
tbody tr:hover{background:var(--row-hover)}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}
.mono{font-family:ui-monospace,Consolas,monospace;font-size:12.5px}
.sub{color:var(--muted);font-size:12px}
.empty{padding:34px 10px;text-align:center;color:var(--muted);font-size:13.5px}
.scrollx{overflow-x:auto}

.tag{display:inline-block;padding:2px 8px;border-radius:20px;font-size:11px;font-weight:700;
  letter-spacing:.03em}
.tag.RECEIVE{background:var(--ok-bg);color:var(--ok)}
.tag.PICK{background:var(--indigo-bg);color:var(--indigo)}
.tag.MOVE{background:var(--warn-bg);color:var(--warn)}
.tag.COUNT{background:var(--purple-bg);color:var(--purple)}
.tag.ADJUST,.tag.RECONCILE{background:var(--bad-bg);color:var(--bad)}
.tag.grey{background:var(--hover);color:var(--ink-2)}
.tag.new{background:var(--indigo-bg);color:var(--indigo)}
.tag.picking{background:var(--warn-bg);color:var(--warn)}
.tag.packed{background:var(--ok-bg);color:var(--ok)}
tr.done td{background:var(--ok-row)}
tr.done td:first-child{border-left:3px solid var(--ok)}
nav a .pill.ok{background:var(--ok-bg);color:var(--ok)}
nav a.active .pill.ok{background:rgba(255,255,255,.24);color:#fff}
.pos{color:var(--ok);font-weight:650}
.neg{color:var(--bad);font-weight:650}

.kbd{display:inline-block;padding:1px 6px;border:1px solid var(--border);border-bottom-width:2px;
  border-radius:5px;font:600 11px ui-monospace,monospace;background:var(--soft);color:var(--ink-2)}


/* ---------- POS shell: top bar + tabs ---------- */
#shell{display:none;min-height:100%}
#shell.on{display:block}
header.top{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:22px;padding:10px 22px;
  background:var(--card);border-bottom:1px solid var(--line)}
header.top .brand{display:flex;align-items:center;gap:10px;font-weight:750;font-size:17px;color:var(--ink);letter-spacing:-.01em}
header.top .brand img{display:block;width:34px;height:34px;border-radius:8px}
nav.tabs{display:flex;gap:4px}
nav.tabs a{padding:8px 14px;border-radius:8px;color:var(--ink-2);font-weight:600;font-size:14px;display:flex;gap:8px;align-items:center}
nav.tabs a:hover{background:var(--hover)}
nav.tabs a.active{background:var(--red);color:#fff}
nav.tabs a .pill{background:var(--warn-bg);color:var(--warn);font-size:11px;padding:1px 7px;border-radius:20px;font-weight:700}
nav.tabs a.active .pill{background:rgba(255,255,255,.24);color:#fff}
header.top .who{margin-left:auto;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
header.top .who b{color:var(--ink)}
main{padding:22px 22px 60px;max-width:1280px;margin:0 auto}
header.page{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:18px;flex-wrap:wrap}
header.page p{margin:4px 0 0;color:var(--muted);font-size:13.5px}
body:not(.admin) [data-admin]{display:none!important}

/* ---------- sell screen ---------- */
.sell{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:18px;align-items:start}
.scanbar{position:relative}
.scanbar input.scan{font-size:22px;padding:16px 18px 16px 52px}
.scanbar .ico{position:absolute;left:18px;top:50%;transform:translateY(-50%);font-size:20px;color:var(--muted);pointer-events:none}
.results{position:absolute;left:0;right:0;top:calc(100% + 6px);background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow-lg);z-index:15;max-height:360px;overflow:auto}
.results div{padding:10px 14px;display:flex;justify-content:space-between;gap:12px;cursor:pointer;border-bottom:1px solid var(--line-2)}
.results div:last-child{border-bottom:0}
.results div:hover,.results div.hl{background:var(--hover)}
.results .price{font-variant-numeric:tabular-nums;font-weight:650;white-space:nowrap}
.basket table td{padding:12px 10px}
.basket .qty{display:inline-flex;align-items:center;border:1px solid var(--border);border-radius:8px;overflow:hidden;background:var(--field)}
.basket .qty button{background:var(--soft);color:var(--ink);border:0;border-radius:0;padding:10px 14px;font-size:18px;line-height:1}
.basket .qty button:hover{background:var(--hover)}
.basket .qty input{width:64px;text-align:center;border:0;border-radius:0;padding:10px 4px;font-weight:700;font-size:16px}
.basket .qty input:focus{outline:none}
.basket .rm{background:none;color:var(--muted);padding:6px 8px;font-size:18px;line-height:1}
.basket .rm:hover{color:var(--bad);background:var(--bad-bg)}
.basket tr.flash td{animation:flash .6s ease}
@keyframes flash{from{background:var(--ok-bg)}}
.summary{position:sticky;top:76px}
.summary .total{display:flex;justify-content:space-between;align-items:baseline;padding:14px 0;border-top:1px solid var(--line);margin-top:8px}
.summary .total .n{font-size:30px;font-weight:750;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.summary .total .l{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.07em}
.pay{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:6px 0 14px}
.pay button{background:var(--card);color:var(--ink-2);border:1px solid var(--border);padding:12px 6px}
.pay button:hover{background:var(--hover)}
.pay button.on{background:var(--ink);color:var(--card);border-color:var(--ink)}
:root[data-theme="dark"] .pay button.on{background:#fff;color:#111;border-color:#fff}
button.big{width:100%;padding:16px;font-size:16px}
.done{display:grid;gap:8px}
.done .k{display:flex;justify-content:space-between;gap:12px;font-size:14px}
.done .k span:last-child{font-variant-numeric:tabular-nums;font-weight:600}
.done .k.total span:last-child{font-size:22px}
.tag.completed{background:var(--ok-bg);color:var(--ok)}
.tag.pending{background:var(--warn-bg);color:var(--warn)}
.tag.cash{background:var(--ok-bg);color:var(--ok)}
.tag.card{background:var(--indigo-bg);color:var(--indigo)}
.tag.other{background:var(--hover);color:var(--ink-2)}
tr.click{cursor:pointer}
.detail{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:16px}
.kv{display:grid;grid-template-columns:auto 1fr;gap:6px 14px;font-size:13.5px}
.kv div:nth-child(odd){color:var(--muted)}

.basket td.num{white-space:nowrap}
@media(max-width:900px){
  .sell,.detail{grid-template-columns:1fr}
  .basket th:nth-child(2),.basket td:nth-child(2){display:none}
  .basket .qty input{width:48px}
  .summary{position:static}
  header.top{gap:12px;padding:8px 12px;flex-wrap:wrap}
  header.top .who{width:100%;justify-content:flex-end}
  main{padding:14px 12px 50px}
}
