:root{--bg: #060913;--bg2: #0a0f20;--card: #0d1428;--card2: #121a36;--line: rgba(124, 138, 255, .14);--line-strong: rgba(124, 138, 255, .3);--txt: #e8ecf8;--muted: #9aa5c5;--dim: #6b7699;--brand: #7c6bff;--brand-2: #22d3ee;--saffron: #ff9f45;--green: #2fbf71;--red: #f87171;--radius: 14px;--font-h: "Space Grotesk", system-ui, sans-serif;--font-b: "Inter", system-ui, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--txt);font-family:var(--font-b);line-height:1.6;font-size:15px}h1,h2,h3,h4{font-family:var(--font-h);letter-spacing:-.02em;line-height:1.2}h2{font-size:1.5rem}a{color:var(--brand-2);text-decoration:none}.muted{color:var(--muted)}.small{font-size:.85rem}.center-pad{text-align:center;padding:24px}.boot{display:flex;height:100vh;align-items:center;justify-content:center;color:var(--muted)}.shell{display:flex;min-height:100vh}.sidebar{width:240px;flex-shrink:0;background:var(--bg2);border-right:1px solid var(--line);display:flex;flex-direction:column;position:sticky;top:0;height:100vh}.brand{display:flex;gap:11px;align-items:center;padding:20px 18px;border-bottom:1px solid var(--line)}.brand .t{font-family:var(--font-h);font-weight:700}.brand .s{font-size:.68rem;color:var(--dim);letter-spacing:.1em;text-transform:uppercase}.brand-mark{width:36px;height:36px;flex-shrink:0;display:block}.sidebar nav{flex:1;padding:14px 10px;display:grid;gap:4px;align-content:start}.navlink{display:flex;gap:11px;align-items:center;padding:10px 14px;border-radius:10px;color:var(--muted);font-weight:500;transition:.18s}.navlink:hover{background:#7c6bff14;color:var(--txt)}.navlink.active{background:#7c6bff29;color:#fff}.sidebar .foot{padding:16px 18px;font-size:.72rem;color:var(--dim);border-top:1px solid var(--line)}.main{flex:1;display:flex;flex-direction:column;min-width:0}.topbar{display:flex;align-items:center;gap:14px;padding:12px 22px;border-bottom:1px solid var(--line);background:#0a0f20cc;position:sticky;top:0;z-index:20;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.topbar .title{font-family:var(--font-h);font-weight:600}.topbar .spacer{flex:1}.hamburger{display:none;background:none;border:none;color:var(--txt);font-size:1.3rem;cursor:pointer}.avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--saffron),var(--brand));display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:.8rem;color:#10131f}.content{padding:26px;max-width:1060px;width:100%;margin:0 auto}.grid{display:grid;gap:16px}.row{display:flex;gap:12px;align-items:center}.row.wrap{flex-wrap:wrap}.row.spread{justify-content:space-between}.grow{flex:1;min-width:200px}.flex{display:flex;gap:10px;align-items:center}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.card-h{padding:13px 18px;font-family:var(--font-h);font-weight:600;border-bottom:1px solid var(--line);background:#7c6bff0a}.card-b{padding:18px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 22px;border-radius:11px;border:none;cursor:pointer;font-family:var(--font-h);font-weight:600;font-size:.92rem;background:linear-gradient(135deg,var(--brand),#5b4bff);color:#fff;transition:transform .18s,box-shadow .18s}.btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 22px #7c6bff59}.btn:disabled{opacity:.55;cursor:not-allowed}.btn.secondary{background:var(--card2);border:1px solid var(--line-strong);color:var(--txt)}.btn.secondary:hover:not(:disabled){box-shadow:0 4px 14px #7c8aff26}.btn.danger{background:#f871711f;border:1px solid rgba(248,113,113,.3);color:var(--red)}.btn.sm{padding:7px 14px;font-size:.82rem;border-radius:9px}.btn.lg{padding:15px 30px;font-size:1.05rem}.f{display:grid;gap:6px}.f>span{font-size:.8rem;color:var(--muted);font-weight:500}input,select,textarea{background:var(--bg2);border:1px solid var(--line-strong);border-radius:10px;color:var(--txt);padding:10px 13px;font-family:var(--font-b);font-size:.92rem;width:100%}input:focus,select:focus,textarea:focus{outline:2px solid rgba(124,107,255,.5);border-color:var(--brand)}textarea{resize:vertical}.tabs{display:flex;gap:6px;border-bottom:1px solid var(--line)}.tabs button{background:none;border:none;color:var(--muted);padding:10px 18px;cursor:pointer;font-family:var(--font-h);font-weight:600;font-size:.92rem;border-bottom:2px solid transparent;margin-bottom:-1px}.tabs button.active{color:var(--brand-2);border-bottom-color:var(--brand-2)}.tbl-wrap{overflow-x:auto}.tbl{width:100%;border-collapse:collapse}.tbl th{text-align:left;padding:11px 14px;font-size:.74rem;letter-spacing:.08em;text-transform:uppercase;color:var(--dim);border-bottom:1px solid var(--line);font-family:var(--font-h)}.tbl td{padding:11px 14px;border-bottom:1px solid var(--line);vertical-align:middle}.tbl tr:last-child td{border-bottom:none}.badge{display:inline-block;padding:3px 10px;border-radius:100px;font-size:.7rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase}.badge.ok{background:#2fbf7124;color:var(--green)}.badge.err{background:#f8717124;color:var(--red)}.badge.proc{background:#ff9f4524;color:var(--saffron)}.badge.mcq{background:#7c6bff29;color:#a5b4fc}.badge.fib{background:#22d3ee21;color:var(--brand-2)}.badge.tf{background:#c084fc24;color:#c084fc}.alert{padding:12px 16px;border-radius:10px;font-size:.9rem}.alert.err{background:#f871711a;border:1px solid rgba(248,113,113,.3);color:#fca5a5}.alert.ok{background:#2fbf711a;border:1px solid rgba(47,191,113,.3);color:#86efac}.alert.warn{background:#ff9f451a;border:1px solid rgba(255,159,69,.3);color:#fdba74}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;background:radial-gradient(700px 500px at 80% -10%,rgba(124,107,255,.18),transparent),radial-gradient(600px 400px at 0% 100%,rgba(34,211,238,.1),transparent),var(--bg)}.login-card{width:100%;max-width:400px;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:34px}.login-logo{display:flex;gap:12px;align-items:center;font-family:var(--font-h);font-weight:700;font-size:1.25rem;margin-bottom:6px}.dropzone{border:2px dashed var(--line-strong);border-radius:var(--radius);padding:38px 20px;text-align:center;cursor:pointer;transition:.2s;display:grid;gap:6px;justify-items:center;background:var(--card)}.dropzone:hover,.dropzone.drag{border-color:var(--brand);background:#7c6bff0f}.dropzone.has{border-style:solid;border-color:#2fbf7180}.dz-icon{font-size:2rem}.progress{height:10px;background:var(--bg2);border-radius:100px;margin:12px 0;overflow:hidden}.progress .bar{height:100%;border-radius:100px;transition:width .6s;background:linear-gradient(90deg,var(--brand),var(--brand-2))}.qcard .qtext{font-size:1.02rem;font-weight:500;margin:12px 0 10px}.srno{display:inline-flex;width:26px;height:26px;align-items:center;justify-content:center;background:var(--card2);border:1px solid var(--line-strong);border-radius:8px;font-family:var(--font-h);font-weight:700;font-size:.8rem}.opts{margin:0 0 10px 22px;display:grid;gap:5px}.opts li{color:var(--muted)}.opts li.correct{color:var(--green);font-weight:600}.answer{font-size:.9rem;padding:8px 12px;background:#2fbf7112;border-radius:8px;margin-bottom:8px}.explain{font-size:.85rem;color:var(--muted);font-style:italic;margin-bottom:6px}.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px 22px;display:grid;min-width:130px}.stat b{font-family:var(--font-h);font-size:1.5rem}.stat span{font-size:.75rem;color:var(--dim);text-transform:uppercase;letter-spacing:.06em}.modal-back{position:fixed;top:0;right:0;bottom:0;left:0;background:#03050cb8;z-index:50;display:flex;align-items:center;justify-content:center;padding:18px}.modal{background:var(--card);border:1px solid var(--line-strong);border-radius:16px;width:100%;max-width:460px;max-height:90vh;display:flex;flex-direction:column}.modal.lg{max-width:760px}.modal-h{display:flex;justify-content:space-between;align-items:center;padding:15px 20px;border-bottom:1px solid var(--line);font-family:var(--font-h)}.modal-h .x{background:none;border:none;color:var(--muted);cursor:pointer;font-size:1rem}.modal-b{padding:20px;overflow-y:auto}.modal-f{padding:14px 20px;border-top:1px solid var(--line);display:flex;gap:10px;justify-content:flex-end}@media(max-width:860px){.sidebar{position:fixed;left:-260px;z-index:40;transition:left .25s;height:100vh}.sidebar.open{left:0;box-shadow:0 0 60px #0009}.hamburger{display:block}.content{padding:16px}}