/* ===== Simple panel layout ===== */
.topnav{background:#0a1929;color:#fff;padding:0;border-bottom:3px solid #0ea5e9;position:sticky;top:0;z-index:30}
.topnav-in{max-width:1200px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;gap:24px;flex-wrap:wrap}
.topnav .brand{font-weight:800;font-size:20px;color:#fff;text-decoration:none}
.topnav .brand .ias{color:#38bdf8}
.topnav nav{display:flex;gap:6px;margin-left:auto;flex-wrap:wrap}
.topnav nav a{color:#cbd5e1;text-decoration:none;padding:8px 14px;border-radius:8px;font-size:14px;font-weight:500}
.topnav nav a:hover{background:rgba(255,255,255,.08);color:#fff}
.topnav nav a.active{background:#0ea5e9;color:#fff;font-weight:600}
.page{max-width:1200px;margin:0 auto;padding:28px 20px}
.page h1{margin:0 0 6px;font-size:26px}
.page .sub{color:#64748b;margin:0 0 24px}
.simple-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}
.pack-card{background:#fff;border:1px solid #e2e8f0;border-radius:14px;padding:20px;display:flex;flex-direction:column;gap:12px}
.pack-card h3{margin:0;font-size:17px}
.pack-meta{color:#64748b;font-size:13px}
.bar{height:8px;background:#e2e8f0;border-radius:99px;overflow:hidden}
.bar i{display:block;height:100%;background:linear-gradient(90deg,#0ea5e9,#10b981)}
.row-btns{display:flex;gap:8px;margin-top:auto}
.row-btns .btn{flex:1;text-align:center;font-size:13px;padding:9px 12px}
.snap{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:24px}
.snap .kpi{background:#fff;border:1px solid #e2e8f0;border-radius:12px;padding:18px}
.snap .kpi .num{font-size:22px;font-weight:800;color:#0a1929}
.snap .kpi .lbl{font-size:12px;color:#64748b;text-transform:uppercase;letter-spacing:.4px}

/* Sidebar layout for teacher/admin */
.shell{display:grid;grid-template-columns:230px 1fr;min-height:100vh;background:#f1f5f9}
.side{background:#0a1929;color:#cbd5e1;padding:20px 0;position:sticky;top:0;height:100vh;overflow-y:auto}
.side .brand{padding:0 20px 18px;border-bottom:1px solid rgba(255,255,255,.08);margin-bottom:12px;color:#fff;font-weight:800;font-size:20px;display:block;text-decoration:none}
.side .brand .ias{color:#38bdf8}
.side a{display:flex;align-items:center;gap:10px;padding:11px 20px;color:#cbd5e1;text-decoration:none;font-size:14px;border-left:3px solid transparent}
.side a:hover{background:rgba(255,255,255,.05);color:#fff}
.side a.active{background:rgba(14,165,233,.12);border-left-color:#0ea5e9;color:#fff;font-weight:600}
.main{padding:24px;min-width:0}
.main .topbar{background:#fff;border:1px solid #e2e8f0;border-radius:12px;padding:14px 20px;margin-bottom:20px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px}
.main h1{margin:0;font-size:22px}
.card{background:#fff;border:1px solid #e2e8f0;border-radius:12px;padding:20px;margin-bottom:18px}
.card h2{margin:0 0 14px;font-size:16px}
.kpi-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px;margin-bottom:18px}
.kpi{background:#fff;border:1px solid #e2e8f0;border-radius:12px;padding:18px}
.kpi .ic{font-size:22px}
.kpi .num{font-size:24px;font-weight:800;margin-top:6px}
.kpi .lbl{color:#64748b;font-size:12px;text-transform:uppercase;letter-spacing:.4px;margin-top:2px}
.tbl{width:100%;border-collapse:collapse;font-size:14px;background:#fff;border-radius:10px;overflow:hidden}
.tbl th{text-align:left;padding:12px 14px;background:#f8fafc;font-size:12px;text-transform:uppercase;color:#475569;border-bottom:1px solid #e2e8f0}
.tbl td{padding:12px 14px;border-bottom:1px solid #f1f5f9}
.tbl tr:hover td{background:#f8fafc}
.tbl-wrap{overflow-x:auto;border:1px solid #e2e8f0;border-radius:10px}
.flex{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:12px}
.form-row label{display:block;font-weight:600;font-size:13px;margin-bottom:6px;color:#334155}
.inp,.sel,.ta{width:100%;padding:10px 12px;border:1px solid #cbd5e1;border-radius:8px;font-size:14px;font-family:inherit}
.ta{min-height:90px;resize:vertical}
.pill{display:inline-block;padding:3px 10px;border-radius:99px;font-size:11px;font-weight:700;background:#e0f2fe;color:#0369a1}
.pill.g{background:#dcfce7;color:#15803d}
.pill.r{background:#fee2e2;color:#b91c1c}
.pill.y{background:#fef3c7;color:#b45309}
.menu-side{display:none;background:#0a1929;color:#fff;border:none;padding:8px 12px;border-radius:8px;font-size:18px;cursor:pointer}
@media(max-width:900px){
  .shell{grid-template-columns:1fr}
  .side{position:fixed;top:0;left:-260px;width:230px;height:100vh;transition:left .25s;z-index:60;box-shadow:2px 0 20px rgba(0,0,0,.3)}
  .side.open{left:0}
  .menu-side{display:inline-flex;align-items:center}
  .form-row{grid-template-columns:1fr}
  .snap{grid-template-columns:1fr}
}