:root{
  --blue:#1FA5E0; --blue-d:#127bb0;
  --navy:#0e1a2b; --navy2:#12233a; --panel:#ffffff;
  --bg:#f4f7fb; --ink:#1c2b3a; --muted:#7286a0; --line:#e6edf5;
  --ok:#1fb877; --warn:#e0a020; --danger:#e0533a;
  --shadow:0 1px 3px rgba(16,42,73,.08),0 8px 24px rgba(16,42,73,.06);
}
*{box-sizing:border-box}
body{margin:0;font-family:"Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif;
  background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased}
h1,h2{margin:0}
a{text-decoration:none;color:inherit}

/* ---------- Login ---------- */
.login-body{min-height:100vh;display:grid;place-items:center;
  background:radial-gradient(1200px 600px at 50% -10%,#183a5a,var(--navy))}
.login-card{width:340px;max-width:92vw;background:#fff;border-radius:16px;padding:32px 28px;
  box-shadow:0 20px 60px rgba(0,0,0,.35);display:flex;flex-direction:column;gap:14px;text-align:center}
.login-logo{height:44px;object-fit:contain;margin:0 auto 4px}
.login-card h1{font-size:20px}
.login-sub{margin:0;color:var(--muted);font-size:13px}
.login-card label{display:flex;flex-direction:column;gap:6px;text-align:left;font-size:13px;color:var(--muted)}
.login-card input{padding:11px 12px;border:1px solid var(--line);border-radius:10px;font-size:15px}
.login-card input:focus{outline:2px solid var(--blue);border-color:var(--blue)}
.login-card button{margin-top:6px;padding:12px;border:0;border-radius:10px;background:var(--blue);
  color:#fff;font-size:15px;font-weight:600;cursor:pointer}
.login-card button:hover{background:var(--blue-d)}
.login-error{background:#fdecea;color:var(--danger);border-radius:8px;padding:9px;font-size:13px}
.login-foot{margin:2px 0 0;color:#a7b6c8;font-size:11px;letter-spacing:.3px}

/* ---------- Layout ---------- */
.layout{display:flex;min-height:100vh}
.sidebar{width:220px;background:var(--navy);color:#cdd9e8;display:flex;flex-direction:column;
  padding:20px 14px;position:sticky;top:0;height:100vh}
.brand img{height:34px;object-fit:contain;filter:brightness(1.1)}
.nav{margin-top:26px;display:flex;flex-direction:column;gap:4px;flex:1}
.nav-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:9px;
  font-size:14px;color:#a9bacf;cursor:pointer}
.nav-item span{width:18px;text-align:center}
.nav-item.active,.nav-item:hover{background:rgba(31,165,224,.16);color:#fff}
.side-foot{border-top:1px solid rgba(255,255,255,.08);padding-top:14px;display:flex;
  flex-direction:column;gap:10px}
.who-name{font-size:14px;color:#fff;font-weight:600}
.who-role{font-size:12px;color:#8ea3bd}
.logout{font-size:13px;color:#8ea3bd;border:1px solid rgba(255,255,255,.14);border-radius:8px;
  padding:8px;text-align:center}
.logout:hover{color:#fff;border-color:var(--blue)}

/* ---------- Main ---------- */
.main{flex:1;padding:22px 26px;min-width:0}
.topbar{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:18px;flex-wrap:wrap}
.topbar h1{font-size:22px}
.scope{margin:4px 0 0;color:var(--muted);font-size:13px}
.range{display:flex;align-items:center;gap:8px}
.range input{padding:8px 10px;border:1px solid var(--line);border-radius:8px;font-size:13px;background:#fff}
.range button{padding:8px 16px;border:0;border-radius:8px;background:var(--blue);color:#fff;
  font-weight:600;cursor:pointer}
.range button:hover{background:var(--blue-d)}

.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:16px}
.card{background:var(--panel);border-radius:14px;padding:16px 18px;box-shadow:var(--shadow);
  border-top:3px solid var(--blue)}
.card.ok{border-top-color:var(--ok)}
.card.warn{border-top-color:var(--warn)}
.card-label{font-size:12.5px;color:var(--muted)}
.card-value{font-size:26px;font-weight:700;margin-top:6px;letter-spacing:-.5px}
.card-value.small{font-size:17px}
.card-sub{font-size:12px;color:var(--muted);margin-top:4px}

.panel{background:var(--panel);border-radius:14px;padding:16px 18px;box-shadow:var(--shadow);margin-bottom:16px}
.panel-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
.panel-head h2{font-size:15px}
.pill{background:#eaf5fc;color:var(--blue-d);font-size:12px;padding:3px 10px;border-radius:20px;font-weight:600}
.chart{width:100%;height:220px}

.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:13.5px}
thead th{text-align:left;color:var(--muted);font-size:11px;letter-spacing:.4px;font-weight:600;
  padding:8px 10px;border-bottom:1px solid var(--line)}
th.num,td.num{text-align:right}
tbody td{padding:11px 10px;border-bottom:1px solid var(--line)}
tbody tr:hover{background:#f8fbfe}
.acc-name{font-weight:600}
.acc-mail{color:var(--muted);font-size:12px}
.badge{font-size:11px;padding:3px 9px;border-radius:20px;font-weight:600;white-space:nowrap}
.badge.da_ve{background:#e6f7f0;color:#159c62}
.badge.man_hinh{background:#fdf4e3;color:#b57d10}
.hh{font-weight:700;color:var(--ink)}
.san-tag{display:inline-block;font-size:11px;font-weight:700;color:#fff;background:var(--blue);
  padding:3px 8px;border-radius:6px}
.empty{padding:40px;text-align:center;color:var(--muted)}

@media(max-width:860px){
  .sidebar{position:fixed;left:-240px;z-index:10}
  .cards{grid-template-columns:repeat(2,1fr)}
  .main{padding:16px}
}