:root{
  --bg:#0f1216; --panel:#161b22; --panel2:#1c232d; --line:#262d38;
  --txt:#e6edf3; --muted:#8b97a7; --brand:#fe2c55; --brand2:#25f4ee;
  --ok:#2ecc71; --warn:#f5a623; --red:#ff4d5e; --chip:#222b36;
  --radius:14px; --shadow:0 6px 24px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{font-family:-apple-system,"Segoe UI",Roboto,Inter,system-ui,sans-serif;
  background:var(--bg);color:var(--txt);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none;cursor:pointer}
h1,h2,h3{margin:0;font-weight:700}
small{color:var(--muted)}

#app{display:grid;grid-template-columns:248px 1fr;height:100vh}

/* Sidebar */
.sidebar{background:linear-gradient(180deg,#12161c,#0e1116);border-right:1px solid var(--line);
  display:flex;flex-direction:column;min-height:0}
.brand{display:flex;align-items:center;gap:10px;padding:18px 18px 14px}
.brand .logo{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),#b3123a);color:#fff;font-size:16px;
  box-shadow:0 0 0 1px rgba(255,255,255,.06)}
.brand-txt b{font-size:15px}
.brand-txt small{display:block;font-size:11px;letter-spacing:.4px;text-transform:uppercase}
.nav{display:flex;flex-direction:column;gap:2px;padding:8px 10px;overflow:auto;flex:1}
.nav-item{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:10px;
  color:var(--muted);font-weight:500;position:relative}
.nav-item i{font-style:normal;font-size:16px;width:20px;text-align:center}
.nav-item span{flex:1}
.nav-item:hover{background:var(--panel);color:var(--txt)}
.nav-item.active{background:var(--panel2);color:#fff}
.nav-item.active::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;
  border-radius:3px;background:var(--brand)}
.badge{background:var(--chip);color:var(--muted);border-radius:20px;font-size:11px;
  padding:1px 8px;font-weight:700;min-width:20px;text-align:center}
.badge.red{background:rgba(255,77,94,.16);color:var(--red)}
.side-foot{border-top:1px solid var(--line);padding:12px}
.me{display:flex;align-items:center;gap:10px}
.avatar{width:34px;height:34px;border-radius:50%;background:var(--brand2);color:#04222a;
  display:grid;place-items:center;font-weight:800;font-size:12px}
.me-txt b{font-size:13px}.me-txt small{font-size:11px}

/* Main */
.main{display:flex;flex-direction:column;min-width:0;min-height:0}
.topbar{display:flex;align-items:center;gap:14px;padding:14px 22px;border-bottom:1px solid var(--line);
  background:var(--bg);position:sticky;top:0;z-index:5}
.topbar h1{font-size:18px;flex:1}
.hamburger{display:none;background:none;border:0;color:var(--txt);font-size:20px;cursor:pointer}
.top-actions{display:flex;align-items:center;gap:10px}
.search{background:var(--panel);border:1px solid var(--line);color:var(--txt);border-radius:10px;
  padding:9px 13px;width:240px;outline:none}
.search:focus{border-color:var(--brand)}
.btn{background:var(--brand);color:#fff;border:0;border-radius:10px;padding:9px 15px;font-weight:600;cursor:pointer}
.btn:hover{filter:brightness(1.08)}
.btn.ghost{background:transparent;border:1px solid var(--line);color:var(--muted)}
.btn.ghost:hover{color:var(--txt);border-color:var(--muted)}
.content{padding:22px;overflow:auto;flex:1}

/* Cards / placeholders */
.grid{display:grid;gap:16px}
.cols-4{grid-template-columns:repeat(4,1fr)}
.cols-3{grid-template-columns:repeat(3,1fr)}
.cols-2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.card h3{font-size:14px;margin-bottom:4px}
.card .big{font-size:26px;font-weight:800;margin:6px 0 2px}
.kpi .lbl{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.3px}
.kpi .trend{font-size:12px;color:var(--ok)}
.section-head{display:flex;align-items:center;justify-content:space-between;margin:4px 0 14px}
.section-head .sub{color:var(--muted);font-size:13px}

.placeholder{border:1px dashed var(--line);border-radius:var(--radius);padding:26px;background:var(--panel)}
.placeholder h2{font-size:16px;margin-bottom:6px}
.placeholder ul{margin:12px 0 0;padding-left:18px;color:var(--muted)}
.placeholder li{margin:5px 0}
.tag{display:inline-block;background:var(--chip);color:var(--muted);border-radius:20px;
  padding:3px 10px;font-size:12px;margin:2px 4px 2px 0}
.tag.brand{background:rgba(254,44,85,.14);color:var(--brand)}
.tag.ok{background:rgba(46,204,113,.14);color:var(--ok)}
.tag.warn{background:rgba(245,166,35,.16);color:var(--warn)}

/* Login */
.login-wrap{display:none;position:fixed;inset:0;align-items:center;justify-content:center;background:radial-gradient(1200px 600px at 50% -10%,rgba(254,44,85,.10),var(--bg));z-index:20;padding:20px}
.login-card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:28px;width:350px;max-width:100%;display:flex;flex-direction:column;gap:12px;box-shadow:var(--shadow)}
.login-brand{font-size:19px;font-weight:800;display:flex;align-items:center;gap:9px}
.login-brand .logo{width:32px;height:32px;border-radius:9px;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),#b3123a);color:#fff;font-size:14px}
.login-sub{color:var(--muted);margin:0 0 4px;font-size:13px}
.login-card input{background:var(--panel2);border:1px solid var(--line);color:var(--txt);border-radius:10px;padding:11px 13px;outline:none;font-size:14px}
.login-card input:focus{border-color:var(--brand)}
.login-card .btn{padding:11px;font-size:15px}
.login-err{color:var(--red);font-size:13px;min-height:16px}
.login-hint{color:var(--muted);font-size:12px;text-align:center;margin:2px 0 0;line-height:1.6}
.lnk{color:var(--brand);cursor:pointer;font-weight:600}
.lnk:hover{text-decoration:underline}
#otp-code{letter-spacing:6px;text-align:center;font-size:20px;font-weight:700}

/* Upload import */
.up-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:4px}
.up-row input[type=file]{flex:1;min-width:150px;color:var(--txt);font-size:12px}
.up-row input[type=file]::file-selector-button{background:var(--panel2);color:var(--txt);
  border:1px solid var(--line);border-radius:8px;padding:6px 10px;margin-right:8px;cursor:pointer}
.imp-result{margin-top:12px;font-size:13px;color:var(--txt);white-space:pre-wrap;
  padding:10px 12px;border-radius:8px;background:var(--panel2);border:1px solid var(--line);display:none}
.imp-result.show{display:block}
.imp-result.ok{border-color:rgba(46,204,113,.5)}
.imp-result.err{border-color:rgba(255,77,94,.5)}

/* Demo banner */
.demo-banner{display:flex;align-items:center;gap:10px;background:rgba(245,166,35,.12);
  border:1px solid rgba(245,166,35,.4);color:var(--warn);border-radius:10px;padding:9px 14px;
  margin-bottom:16px;font-size:13px;font-weight:600}

/* Tables */
.tbl{width:100%;border-collapse:collapse;font-size:13px}
.tbl th{text-align:left;color:var(--muted);font-weight:600;padding:8px 10px;border-bottom:1px solid var(--line);white-space:nowrap}
.tbl td{padding:9px 10px;border-bottom:1px solid var(--line)}
.tbl tr:last-child td{border-bottom:0}
.tbl tr:hover td{background:var(--panel2)}
.num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
.up{color:var(--ok);font-weight:700}.down{color:var(--red);font-weight:700}
.pill{display:inline-block;padding:2px 9px;border-radius:20px;font-size:11px;font-weight:700}
.pill.shop{background:rgba(254,44,85,.16);color:var(--brand)}
.pill.web{background:rgba(46,204,113,.16);color:var(--ok)}
.pill.lead{background:rgba(245,166,35,.18);color:var(--warn)}
.pill.mess{background:rgba(37,244,238,.14);color:var(--brand2)}
.pill.khac{background:var(--chip);color:var(--muted)}
.tbl-wrap{overflow-x:auto}

/* Horizontal bar chart */
.barh{display:flex;flex-direction:column;gap:10px;margin-top:4px}
.barh .row{display:grid;grid-template-columns:120px 1fr auto;align-items:center;gap:10px}
.barh .lbl2{color:var(--txt);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.barh .track{background:var(--panel2);border-radius:6px;height:16px;overflow:hidden}
.barh .fill{height:100%;border-radius:6px;background:linear-gradient(90deg,var(--brand),#ff6b83)}
.barh .val{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap}

/* Column chart (7 ngày) */
.cols7{display:flex;align-items:flex-end;gap:8px;height:150px;padding-top:8px}
.cols7 .c{flex:1;display:flex;flex-direction:column;align-items:center;gap:6px;height:100%;justify-content:flex-end}
.cols7 .bar{width:70%;background:linear-gradient(180deg,var(--brand2),#1aa6a0);border-radius:5px 5px 0 0;min-height:3px}
.cols7 .cl{font-size:11px;color:var(--muted)}

/* progress */
.prog{background:var(--panel2);border-radius:20px;height:10px;overflow:hidden}
.prog>i{display:block;height:100%;border-radius:20px;background:linear-gradient(90deg,var(--ok),#7bed9f)}

/* Kanban */
.kan{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.kan .col-k{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:12px}
.kan .col-k h4{margin:0 0 10px;font-size:13px;display:flex;justify-content:space-between}
.kan .tk{background:var(--panel2);border:1px solid var(--line);border-left:3px solid var(--brand);
  border-radius:8px;padding:10px;margin-bottom:8px}
.kan .tk .t{font-size:13px;font-weight:600}
.kan .tk .m{font-size:11px;color:var(--muted);margin-top:4px;display:flex;justify-content:space-between;gap:6px}
.kan .tk.over{border-left-color:var(--red)}
@media(max-width:900px){.kan{grid-template-columns:1fr 1fr}.barh .row{grid-template-columns:96px 1fr auto}}
@media(max-width:560px){.kan{grid-template-columns:1fr}}

/* Filter bar */
.filterbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;background:var(--panel);
  border:1px solid var(--line);border-radius:12px;padding:11px 14px;margin-bottom:16px}
.filterbar .fl-lbl{color:var(--muted);font-weight:600;font-size:13px}
.filterbar .fl{background:var(--panel2);color:var(--txt);border:1px solid var(--line);
  border-radius:9px;padding:7px 11px;outline:none;font-size:13px}
.filterbar .fl:focus{border-color:var(--brand)}
.filterbar .fl-note{margin-left:auto;color:var(--muted);font-size:12px}
.filterbar .fl-date{color-scheme:dark;font-family:inherit}

/* Loại hình totals */
.lh-totals{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:10px}
.lh-stat{background:var(--panel2);border:1px solid var(--line);border-radius:10px;padding:10px 12px}
.lh-stat .n{display:block;color:var(--muted);font-size:12px;margin-bottom:2px}
.lh-stat b{font-size:18px;font-weight:800}
.lh-stat.brand{border-color:rgba(254,44,85,.5)} .lh-stat.brand b{color:var(--brand)}
.lh-stat.ok{border-color:rgba(46,204,113,.4)} .lh-stat.ok b{color:var(--ok)}
.lh-stat.warn{border-color:rgba(245,166,35,.4)} .lh-stat.warn b{color:var(--warn)}

/* Config rows */
.cfg-row{display:flex;align-items:center;gap:10px;padding:9px 0;border-bottom:1px solid var(--line)}
.cfg-row:last-child{border-bottom:0}
.cfg-row .k{width:150px;color:var(--muted);font-size:13px}
.cfg-row input,.cfg-row select{flex:1;background:var(--panel2);color:var(--txt);
  border:1px solid var(--line);border-radius:8px;padding:7px 10px;outline:none;font-size:13px}
.cfg-row input:focus,.cfg-row select:focus{border-color:var(--brand)}
.cfg-row .btn{padding:7px 12px;font-size:13px}

.scrim{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:8}

/* Responsive */
@media(max-width:900px){
  #app{grid-template-columns:1fr}
  .sidebar{position:fixed;left:0;top:0;bottom:0;width:264px;z-index:9;transform:translateX(-100%);
    transition:transform .22s ease}
  .sidebar.open{transform:none;box-shadow:var(--shadow)}
  .hamburger{display:block}
  .search{width:150px}
  .scrim.show{display:block}
  .cols-4{grid-template-columns:repeat(2,1fr)}
  .cols-3,.cols-2{grid-template-columns:1fr}
}
@media(max-width:560px){
  .content{padding:14px}
  .search{display:none}
  .cols-4{grid-template-columns:1fr}
  .topbar h1{font-size:16px}
}