:root{
  --bg:#0f1623; --panel:#172033; --panel2:#1e293b; --line:#2a3852;
  --txt:#e8edf5; --muted:#94a3b8; --accent:#38bdf8;
  --pos:#34d399; --neg:#f87171;
  --sidebar:#0b1120;
}
html[data-theme="light"]{
  --bg:#f3f6fa; --panel:#ffffff; --panel2:#eef2f7; --line:#dce3ec;
  --txt:#0f1726; --muted:#5a6a7e; --accent:#0ea5e9;
  --pos:#0f9d6b; --neg:#dc2626;
  --sidebar:#ffffff;
}
html[data-theme="light"] .kpi,
html[data-theme="light"] .card{box-shadow:0 1px 2px rgba(15,23,38,.05)}
html[data-theme="light"] .side{box-shadow:1px 0 0 var(--line)}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  background:var(--bg);color:var(--txt);font-size:14px}
a{color:inherit;text-decoration:none}

/* layout */
.shell{display:flex;min-height:100vh}
.side{width:230px;background:var(--sidebar);border-right:1px solid var(--line);
  padding:20px 14px;position:sticky;top:0;height:100vh;display:flex;flex-direction:column;flex-shrink:0}
.brand{font-weight:700;font-size:16px;padding:6px 10px 18px;letter-spacing:-.3px}
.brand span{color:var(--accent)}
.nav a{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;
  color:var(--muted);font-weight:600;margin-bottom:2px;font-size:13.5px}
.nav a:hover{background:var(--panel2);color:var(--txt)}
.nav a.active{background:var(--accent);color:#0b1120}
.nav .grp{font-size:11px;text-transform:uppercase;letter-spacing:.6px;color:#64748b;
  padding:14px 12px 6px;font-weight:700}
.side .foot{margin-top:auto;font-size:11px;color:var(--muted);padding:10px}
.side .foot a{color:var(--accent)}
.theme-btn{display:flex;align-items:center;gap:10px;width:100%;background:var(--panel2);
  border:1px solid var(--line);color:var(--muted);border-radius:10px;padding:9px 12px;
  font-weight:600;font-size:13px;cursor:pointer;margin-top:8px}
.theme-btn:hover{color:var(--txt)}
.main{flex:1;padding:24px 28px;min-width:0}

/* header */
.topbar{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px;margin-bottom:20px}
.topbar h1{font-size:22px;font-weight:700;letter-spacing:-.3px}
.topbar .sub{color:var(--muted);font-size:13px;margin-top:3px}
.ctrl{display:flex;gap:10px;align-items:center}
select,input[type=search],input[type=text],input[type=password]{
  background:var(--panel2);border:1px solid var(--line);border-radius:10px;
  color:var(--txt);padding:9px 12px;font-size:13px}
.btn{background:var(--accent);color:#0b1120;border:none;border-radius:10px;
  padding:9px 16px;font-weight:700;cursor:pointer;font-size:13px}
.btn.ghost{background:var(--panel2);color:var(--txt);border:1px solid var(--line)}
.btn:hover{filter:brightness(1.05)}

/* kpis + cards */
.kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-bottom:18px}
.kpi{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:14px 16px}
.kpi .label{color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.5px;font-weight:600}
.kpi .val{font-size:22px;font-weight:700;margin-top:6px;line-height:1.1}
.kpi .sub2{font-size:11px;color:var(--muted);margin-top:3px}
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-bottom:16px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:16px}
.card h3{font-size:14px;font-weight:600}
.card .ch{font-size:11px;color:var(--muted);margin:2px 0 12px}
.chartbox{position:relative;height:280px}
.full{grid-column:1/-1}

/* table */
table{width:100%;border-collapse:collapse;font-size:12.5px}
th,td{padding:8px 10px;text-align:right;border-bottom:1px solid var(--line);white-space:nowrap}
th{color:var(--muted);font-weight:600;cursor:pointer;user-select:none;position:sticky;top:0;background:var(--panel)}
th:first-child,td:first-child,th:nth-child(2),td:nth-child(2){text-align:left}
tr:hover td{background:var(--panel2)}
.tablewrap{max-height:460px;overflow:auto;border-radius:10px}
.tag{display:inline-block;padding:2px 8px;border-radius:20px;font-size:11px;font-weight:600;
  background:rgba(56,189,248,.15);color:var(--accent)}
.pos{color:var(--pos)} .neg{color:var(--neg)}

/* login */
.login-wrap{display:flex;align-items:center;justify-content:center;min-height:100vh;width:100%}
.login-card{background:var(--panel);border:1px solid var(--line);border-radius:16px;
  padding:32px;width:340px}
.login-card h1{font-size:20px;margin-bottom:4px}
.login-card p{color:var(--muted);font-size:13px;margin-bottom:20px}
.login-card label{display:block;font-size:12px;color:var(--muted);margin:12px 0 5px;font-weight:600}
.login-card input{width:100%}
.login-card .btn{width:100%;margin-top:20px;padding:11px}
.err{background:rgba(248,113,113,.12);border:1px solid var(--neg);color:#fca5a5;
  padding:10px 12px;border-radius:10px;font-size:12.5px;margin-bottom:8px}

/* upload */
.drop{border:2px dashed var(--line);border-radius:14px;padding:34px;text-align:center;
  background:var(--panel);cursor:pointer;transition:.15s}
.drop:hover,.drop.drag{border-color:var(--accent);background:var(--panel2)}
.muted{color:var(--muted)}
.toast{position:fixed;bottom:22px;right:22px;background:var(--panel);border:1px solid var(--line);
  border-left:4px solid var(--accent);padding:14px 18px;border-radius:10px;font-size:13px;
  max-width:340px;box-shadow:0 8px 30px rgba(0,0,0,.4);opacity:0;transform:translateY(8px);
  transition:.2s;z-index:50}
.toast.show{opacity:1;transform:none}
.toast.err{border-left-color:var(--neg)}
.empty{background:var(--panel);border:1px dashed var(--line);border-radius:14px;
  padding:40px;text-align:center;color:var(--muted)}
.empty a{color:var(--accent);font-weight:600}
/* mobile top bar + drawer (hidden on desktop) */
.mobile-bar{display:none}
.burger{background:var(--panel2);border:1px solid var(--line);color:var(--txt);
  width:40px;height:40px;border-radius:10px;font-size:18px;cursor:pointer;line-height:1}
.backdrop{display:none}

@media(max-width:900px){
  body{font-size:13.5px}
  .shell{display:block}
  .mobile-bar{display:flex;align-items:center;gap:12px;position:sticky;top:0;z-index:30;
    background:var(--sidebar);border-bottom:1px solid var(--line);padding:10px 14px}
  .mobile-bar .brand{padding:0;font-size:16px}
  .side{position:fixed;top:0;left:0;height:100vh;width:250px;z-index:40;
    transform:translateX(-100%);transition:transform .25s ease}
  .side.open{transform:translateX(0);box-shadow:0 0 40px rgba(0,0,0,.5)}
  /* keep full labels inside the drawer */
  .side .brand,.nav a span,.side .foot{display:revert}
  .backdrop.show{display:block;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:35}
  .main{padding:16px 14px}
  .grid{grid-template-columns:1fr}
  .topbar{align-items:stretch}
  .topbar h1{font-size:19px}
  .ctrl{width:100%;flex-wrap:wrap}
  .ctrl select,.ctrl input[type=search]{flex:1;min-width:140px}
  .kpis{grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:10px}
  .kpi .val{font-size:19px}
  .chartbox{height:240px}
  .drop{padding:24px}
}
@media(max-width:420px){
  .kpis{grid-template-columns:1fr 1fr}
  .kpi .val{font-size:18px}
}