:root{
  --ink:#0b0b0c; --ink2:#2a2a2e; --mut:#6b6b73; --line:#e4e4e8; --line2:#d3d3d9; --bg:#f4f4f6; --card:#fff;
  --side:#0b0b0c; --side2:#1b1b1f; --ok:#0f7a3d; --okbg:#e8f5ee; --err:#b42318; --errbg:#fdecea; --warn:#9a5b00; --warnbg:#fff4e0;
  --acc:#0b0b0c; --r:10px;
  font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-size:14px;line-height:1.45}
a{color:var(--ink);}
h1,h2,h3{margin:0;letter-spacing:-.01em}
h3{font-size:15px;margin-bottom:10px}
.muted{color:var(--mut)}
.nowrap{white-space:nowrap}
.num,td.num,th.num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
.tbl th.num,.tbl td.num{text-align:right}
.pos{color:var(--ok)} .neg{color:var(--err)}

/* Shell */
.shell{display:flex;min-height:100vh}
.side{width:236px;background:var(--side);color:#fff;display:flex;flex-direction:column;position:fixed;top:0;bottom:0;left:0;z-index:20;transition:transform .2s}
.brand{display:flex;align-items:center;gap:10px;padding:22px 20px 18px;text-decoration:none;color:#fff;border-bottom:1px solid #222}
.brand img{height:26px}
.brand span{font-weight:700;font-size:13px;letter-spacing:.18em;text-transform:uppercase;color:#bdbdc4}
.side nav{flex:1;padding:12px 10px;overflow:auto}
.side nav a{display:flex;align-items:center;gap:11px;padding:9px 12px;border-radius:8px;color:#c9c9cf;text-decoration:none;font-weight:500;margin-bottom:2px}
.side nav a svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}
.side nav a:hover{background:var(--side2);color:#fff}
.side nav a.on{background:#fff;color:#000}
.side-foot{padding:14px 20px;border-top:1px solid #222;font-size:12px;color:#9a9aa2}
.side-foot a{color:#c9c9cf}
.who{display:flex;flex-direction:column;margin-bottom:6px}.who b{color:#fff;font-size:13px}
.main{flex:1;margin-left:236px;min-width:0;display:flex;flex-direction:column}
.top{display:flex;align-items:center;gap:14px;padding:16px 28px;background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.top h1{font-size:19px;font-weight:700}
.top-r{margin-left:auto;color:var(--mut);font-size:13px}
.burger{display:none;border:1px solid var(--line2);background:#fff;border-radius:8px;font-size:18px;padding:4px 10px;cursor:pointer}
.content{padding:24px 28px;flex:1}
.foot{padding:16px 28px;color:var(--mut);font-size:12px}

/* Cards & grids */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px;margin-bottom:18px}
.card.flush{padding:0;overflow:hidden}
.card.narrow{max-width:640px}
.card-h{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.card-h h3{margin:0}
.card-h .r{margin-left:auto;display:flex;gap:8px;align-items:center}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px 18px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px 18px}
.span2{grid-column:span 2}
.cols{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:18px;align-items:start}
.stack{display:flex;flex-direction:column;gap:12px}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}

.kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;margin-bottom:18px}
.kpi{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px}
.kpi .l{color:var(--mut);font-size:12px;font-weight:500;text-transform:uppercase;letter-spacing:.04em}
.kpi .v{font-size:22px;font-weight:700;margin-top:4px;font-variant-numeric:tabular-nums}
.kpi .s{color:var(--mut);font-size:12px;margin-top:2px}
.kpi.dark{background:var(--ink);color:#fff;border-color:var(--ink)}.kpi.dark .l,.kpi.dark .s{color:#a9a9b0}

/* Forms */
label{display:flex;flex-direction:column;gap:5px;font-size:12.5px;font-weight:600;color:var(--ink2)}
input,select,textarea{font:inherit;font-size:14px;padding:9px 11px;border:1px solid var(--line2);border-radius:8px;background:#fff;color:var(--ink);width:100%;min-width:0}
input:focus,select:focus,textarea:focus{outline:2px solid var(--ink);outline-offset:-1px;border-color:var(--ink)}
input[type=checkbox]{width:17px;height:17px;accent-color:#000}
textarea{min-height:70px}
.w60{width:64px}.w90{width:100px}
.inline{display:flex;gap:8px}
.inline > *{flex:1}
.inline > select{flex:0 0 46%}
.hint{color:var(--mut);font-size:13px;margin:0 0 14px;max-width:900px}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;font:inherit;font-weight:600;font-size:13.5px;padding:9px 15px;border-radius:8px;border:1px solid var(--line2);background:#fff;color:var(--ink);cursor:pointer;text-decoration:none;white-space:nowrap}
.btn:hover{border-color:var(--ink)}
.btn.primary{background:var(--ink);border-color:var(--ink);color:#fff}
.btn.primary:hover{background:#2b2b30}
.btn.danger{color:var(--err);border-color:#f0c7c2}
.btn.danger:hover{background:var(--errbg)}
.btn.sm{padding:5px 10px;font-size:12.5px}
.btn.big{padding:12px 18px;font-size:15px}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* Tables */
.tbl{width:100%;border-collapse:collapse}
.tbl th{font-size:11.5px;text-transform:uppercase;letter-spacing:.05em;color:var(--mut);font-weight:600;text-align:left;padding:9px 10px;border-bottom:1px solid var(--line);background:#fafafb;white-space:nowrap}
.tbl td{padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:middle}
.tbl tr:last-child td{border-bottom:0}
.tbl tbody tr:hover td{background:#fafafb}
.tbl tfoot td{font-weight:700;background:#fafafb;border-top:2px solid var(--line2)}
.tbl input,.tbl select{padding:6px 8px;font-size:13px}
.tbl .addrow td{background:#fcfcfd}
.tbl tr.cancel td{color:#a0a0a8;text-decoration:line-through}
.tbl a{font-weight:600;text-decoration:none}
.tbl a:hover{text-decoration:underline}
.scroll{overflow-x:auto}
.empty{padding:30px;text-align:center;color:var(--mut)}

.badge{display:inline-block;font-size:11.5px;font-weight:600;padding:2px 8px;border-radius:99px;background:#efeff2;color:var(--ink2);white-space:nowrap}
.badge.ok{background:var(--okbg);color:var(--ok)} .badge.err{background:var(--errbg);color:var(--err)} .badge.warn{background:var(--warnbg);color:var(--warn)}
.badge.dark{background:var(--ink);color:#fff}

.flash{padding:11px 14px;border-radius:8px;margin-bottom:14px;font-weight:500;background:var(--okbg);color:var(--ok);border:1px solid #bfe3cd}
.flash.err{background:var(--errbg);color:var(--err);border-color:#f4c4bf}
.flash.warn{background:var(--warnbg);color:var(--warn);border-color:#f3d9a8}

.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:18px;overflow-x:auto}
.tabs a{padding:9px 14px;text-decoration:none;color:var(--mut);font-weight:600;border-bottom:2px solid transparent;margin-bottom:-1px;white-space:nowrap}
.tabs a.on{color:var(--ink);border-color:var(--ink)}

.filters{display:flex;gap:10px;align-items:flex-end;flex-wrap:wrap;margin-bottom:16px}
.filters label{flex-direction:column}
.filters input,.filters select{width:auto}
.quick{display:flex;gap:10px;font-size:13px;padding-bottom:10px}
.quick a{color:var(--mut)}

.bar{height:8px;background:#ececf0;border-radius:99px;overflow:hidden;min-width:80px}
.bar i{display:block;height:100%;background:var(--ink)}
.bar.over i{background:var(--warn)}

/* Sale screen */
.sale-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(320px,1fr);gap:18px;align-items:start}
.step{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.step b{display:inline-flex;width:24px;height:24px;border-radius:50%;background:var(--ink);color:#fff;align-items:center;justify-content:center;font-size:12px}
.step h3{margin:0}
.lotinfo{background:#fafafb;border:1px dashed var(--line2);border-radius:8px;padding:10px 12px;font-size:13px;margin-top:10px;display:none}
.lotinfo.show{display:block}
.lotinfo .row{justify-content:space-between}
.exp-list{display:flex;flex-direction:column;gap:6px}
.exp-item{display:grid;grid-template-columns:22px 1fr 110px 92px;gap:8px;align-items:center;padding:7px 9px;border:1px solid var(--line);border-radius:8px}
.exp-item.off{opacity:.5}
.exp-item input[type=number]{padding:5px 7px;font-size:13px}
.exp-item .who{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;margin:0;display:block}
.exp-item .amt{text-align:right;font-variant-numeric:tabular-nums;font-weight:600}
.summary{position:sticky;top:80px}
.sum-block{border:1px solid var(--line);border-radius:8px;margin-bottom:12px;overflow:hidden}
.sum-block h4{margin:0;padding:8px 12px;background:#fafafb;border-bottom:1px solid var(--line);font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--mut)}
.sum-line{display:flex;justify-content:space-between;padding:6px 12px;font-variant-numeric:tabular-nums}
.sum-line.tot{border-top:1px solid var(--line);font-weight:800;font-size:16px;padding:10px 12px}
.sum-line.tot.dark{background:var(--ink);color:#fff}
.sum-line.sub{color:var(--mut);font-size:13px}
.warnbox{display:none;margin-top:8px}
.warnbox.show{display:block}

/* Auth */
body.auth{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px;background:#ececef}
.auth-box{background:#fff;border:1px solid var(--line);border-radius:14px;padding:32px;width:100%;max-width:400px}
.auth-logo{height:40px;margin-bottom:18px}
.auth-box h2{font-size:22px}
.auth-box p{margin:4px 0 20px}

/* Dashboard chart */
.chart{display:flex;align-items:flex-end;gap:6px;height:150px;padding-top:10px}
.chart .c{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;height:100%;justify-content:flex-end}
.chart .c i{display:block;width:100%;max-width:34px;background:var(--ink);border-radius:4px 4px 0 0;min-height:2px}
.chart .c span{font-size:10.5px;color:var(--mut)}

.def{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;font-size:13.5px}
.def dt{color:var(--mut)} .def dd{margin:0;font-weight:600}

@media (max-width:1100px){.sale-grid,.cols{grid-template-columns:1fr}.summary{position:static}}
@media (max-width:820px){
  .side{transform:translateX(-100%)} .side.open{transform:none;box-shadow:0 0 40px rgba(0,0,0,.4)}
  .main{margin-left:0} .burger{display:block}
  .top{padding:12px 16px} .top-r{display:none}
  .content{padding:16px}
  .grid2,.grid3{grid-template-columns:1fr} .span2{grid-column:auto}
  .tbl{font-size:13px}
  .card{padding:14px}
  .exp-item{grid-template-columns:22px 1fr 90px 80px}
}

@media print{
  .side,.top,.foot,.filters,.tabs,.btn,.burger,.quick{display:none!important}
  .main{margin:0}.content{padding:0}
  body{background:#fff}
  .card{border:0;padding:0}
  .kpi{border:1px solid #ccc}
}