:root{
  --navy-1:#0b1f36;--navy-2:#12304f;--navy-3:#1a3f66;--panel:rgba(255,255,255,.065);--panel-2:rgba(255,255,255,.1);--line:rgba(255,255,255,.14);
  --text:#f4f8fc;--muted:rgba(244,248,252,.66);--blue:#2f8fe0;--cyan:#5cc8ff;--yellow:#fcd303;--green:#2fbf7a;--red:#ff6b57;--orange:#ff9f43;
  --radius:16px;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{font-family:'Poppins',system-ui,-apple-system,Segoe UI,sans-serif;color:var(--text);font-size:14px;line-height:1.45;
  background:radial-gradient(1200px 700px at 12% -10%,#245a8e 0%,transparent 60%),linear-gradient(135deg,var(--navy-1),var(--navy-2) 55%,var(--navy-3));background-attachment:fixed}
a{color:var(--cyan)}
button,input,select{font:inherit;color:inherit}
.hide{display:none!important}

/* ---------- sign in */
.login{min-height:100%;display:grid;place-items:center;padding:20px}
.login .card{width:min(420px,100%);padding:34px 30px 28px;border-radius:20px;background:var(--panel);border:1px solid var(--line);box-shadow:0 18px 50px rgba(0,0,0,.35);text-align:center}
.login img{width:84px;height:84px;border-radius:20px;box-shadow:0 8px 24px rgba(0,0,0,.4)}
.login h1{font-size:22px;margin:14px 0 2px}
.login p{color:var(--muted);font-size:13px;margin-bottom:18px}
.field{display:block;text-align:left;margin-top:14px}
.field span{display:block;font-size:11.5px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:var(--muted);margin-bottom:6px}
.field input,.field select,.bar select,.bar input[type=date]{width:100%;padding:11px 13px;border-radius:11px;border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.09);color:#fff}
.field input:focus,.field select:focus,.bar select:focus,.bar input:focus{outline:2px solid var(--cyan);outline-offset:0}
select option{color:#000}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 18px;border-radius:11px;border:none;background:var(--cyan);color:var(--navy-1);font-weight:700;cursor:pointer}
.btn:hover{background:#8bd9ff}.btn:disabled{opacity:.5;cursor:not-allowed}
.btn.ghost{background:var(--panel-2);color:#fff;border:1px solid var(--line);font-weight:600}.btn.ghost:hover{background:rgba(255,255,255,.16)}
.btn.danger{background:var(--red);color:#fff}.btn.small{padding:7px 12px;font-size:12.5px;border-radius:9px}
.login .btn{width:100%;margin-top:20px;padding:13px}
.err{color:#ffb4a8;font-size:13px;min-height:19px;margin-top:10px}

/* ---------- shell */
.shell{display:grid;grid-template-columns:230px 1fr;min-height:100%}
.side{padding:20px 14px;border-right:1px solid var(--line);background:rgba(7,22,40,.55);backdrop-filter:blur(8px);position:sticky;top:0;height:100vh;display:flex;flex-direction:column}
.brand{display:flex;align-items:center;gap:11px;padding:4px 8px 18px}
.brand img{width:40px;height:40px;border-radius:10px}
.brand b{display:block;font-size:15px;line-height:1.1}.brand small{color:var(--muted);font-size:11px}
.nav a{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:11px;color:var(--muted);text-decoration:none;font-weight:500;margin-bottom:3px}
.nav a:hover{background:var(--panel);color:#fff}.nav a.on{background:var(--panel-2);color:#fff;box-shadow:inset 3px 0 0 var(--cyan)}
.nav svg{width:18px;height:18px;flex:none}
.me{margin-top:auto;padding:12px 10px;border-top:1px solid var(--line);font-size:12px;color:var(--muted);word-break:break-all}
.me b{display:block;color:#fff;font-weight:600;margin-bottom:6px;font-size:12.5px}
.main{padding:22px 26px 40px;min-width:0}
.top{display:flex;align-items:flex-end;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-bottom:16px}
.top h1{font-size:22px;font-weight:600}.top p{color:var(--muted);font-size:13px}
.menu{display:none}

/* ---------- filters */
.bar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:18px;padding:12px;border-radius:var(--radius);background:var(--panel);border:1px solid var(--line)}
.bar select,.bar input[type=date]{width:auto;min-width:130px;padding:9px 11px;font-size:13px}
.seg{display:inline-flex;border:1px solid rgba(255,255,255,.25);border-radius:11px;overflow:hidden}
.seg button{background:transparent;border:none;padding:8px 13px;cursor:pointer;color:var(--muted);font-weight:600;font-size:13px}
.seg button.on{background:#fff;color:var(--navy-2)}
.grow{flex:1}

/* ---------- cards */
.kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:12px;margin-bottom:16px}
.kpi{padding:16px 18px;border-radius:var(--radius);background:var(--panel);border:1px solid var(--line);position:relative;overflow:hidden}
.kpi::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--c,var(--cyan))}
.kpi .l{font-size:11.5px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:var(--muted)}
.kpi .v{font-size:28px;font-weight:700;margin-top:4px;letter-spacing:-.5px}.kpi .v small{font-size:14px;font-weight:500;color:var(--muted);margin-left:3px}
.kpi .s{font-size:12px;color:var(--muted);margin-top:2px}
.grid{display:grid;gap:14px;margin-bottom:14px}
.g2{grid-template-columns:2fr 1fr}.g3{grid-template-columns:repeat(3,1fr)}.g11{grid-template-columns:1fr 1fr}
.panel{padding:16px 18px;border-radius:var(--radius);background:var(--panel);border:1px solid var(--line);min-width:0}
.panel h2{font-size:14.5px;font-weight:600;margin-bottom:2px}.panel .sub{font-size:12px;color:var(--muted);margin-bottom:12px}
.chart{position:relative;height:270px}.chart.sm{height:230px}
.empty{padding:34px 10px;text-align:center;color:var(--muted)}

/* ---------- tables */
.tw{overflow:auto;border-radius:12px}
table{width:100%;border-collapse:collapse;font-size:13px}
th{position:sticky;top:0;text-align:left;font-size:11px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:var(--muted);padding:9px 10px;border-bottom:1px solid var(--line);white-space:nowrap;background:rgba(14,38,64,.92);cursor:default}
th.sort{cursor:pointer}th.sort:hover{color:#fff}
td{padding:10px;border-bottom:1px solid rgba(255,255,255,.07);white-space:nowrap}
tr:hover td{background:rgba(255,255,255,.04)}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}
td.wrap{white-space:normal;min-width:160px}
.link{background:none;border:none;color:var(--cyan);cursor:pointer;text-align:left;padding:0;font-weight:600}.link:hover{text-decoration:underline}
.pill{display:inline-block;padding:2px 9px;border-radius:99px;font-size:11.5px;font-weight:600;border:1px solid var(--line);background:var(--panel)}
.pill.online{color:#8ff0bd;border-color:rgba(47,191,122,.55);background:rgba(47,191,122,.14)}
.pill.offline{color:var(--muted)}.pill.expired{color:#ffcf9a;border-color:rgba(255,159,67,.5);background:rgba(255,159,67,.13)}
.pill.revoked{color:#ffb4a8;border-color:rgba(255,107,87,.5);background:rgba(255,107,87,.13)}
.dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:currentColor;margin-right:6px}
.meter{display:inline-block;vertical-align:middle;width:90px;height:7px;border-radius:99px;background:rgba(255,255,255,.12);margin-left:8px;overflow:hidden}
.meter i{display:block;height:100%;background:linear-gradient(90deg,var(--blue),var(--cyan))}
.back{margin-bottom:10px}
.toast{position:fixed;right:18px;bottom:18px;background:#fff;color:var(--navy-1);padding:11px 16px;border-radius:12px;font-weight:600;box-shadow:0 10px 30px rgba(0,0,0,.4);z-index:50}
.loading{padding:60px;text-align:center;color:var(--muted)}
.forms{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px;align-items:end;margin-top:6px}

/* ---------- small screens */
@media (max-width:1100px){.g2,.g3{grid-template-columns:1fr}.g11{grid-template-columns:1fr}}
@media (max-width:820px){
  .shell{grid-template-columns:1fr}
  .side{position:fixed;left:0;top:0;bottom:0;width:250px;z-index:30;transform:translateX(-102%);transition:transform .2s;background:rgba(9,25,44,.97)}
  .side.open{transform:none}
  .menu{display:inline-flex}
  .main{padding:14px 12px 40px}
  .kpi .v{font-size:24px}
}

/* ---------- curriculum progress (one bar per class) */
.progs{display:grid;gap:12px}
.prog{display:grid;grid-template-columns:70px 1fr 120px 190px;gap:12px;align-items:center}
.prog .pl{font-weight:600}
.prog .pt{height:12px;border-radius:99px;background:rgba(255,255,255,.12);overflow:hidden}
.prog .pt i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--blue),var(--cyan))}
.prog .pv{font-size:13px;color:var(--muted);white-space:nowrap}.prog .pv b{color:#fff}
.prog .pm{font-size:12.5px;color:var(--muted);text-align:right;white-space:nowrap}
@media (max-width:820px){.prog{grid-template-columns:60px 1fr;row-gap:2px}.prog .pv,.prog .pm{grid-column:2;text-align:left}}