:root{
  --bg:#0f172a; --panel:#1e293b; --panel2:#273449; --line:#334155;
  --txt:#e2e8f0; --muted:#94a3b8; --brand:#2563eb; --brand2:#3b82f6;
  --ok:#22c55e; --warn:#f59e0b; --err:#ef4444; --gold:#fbbf24;
  --radius:14px;
}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--txt);line-height:1.55}
a{color:var(--brand2)}
button{font:inherit;cursor:pointer;border:none;border-radius:10px;padding:.7em 1.1em;background:var(--brand);color:#fff;font-weight:600;transition:.15s}
button:hover{background:var(--brand2)}
button.ghost{background:transparent;border:1px solid var(--line);color:var(--txt)}
button.ghost:hover{background:var(--panel2)}
button:disabled{opacity:.5;cursor:not-allowed}
input{font:inherit;width:100%;padding:.75em;border-radius:10px;border:1px solid var(--line);background:#0b1220;color:var(--txt)}
.wrap{max-width:1100px;margin:0 auto;padding:16px}

/* ---- auth ---- */
.auth{min-height:100vh;display:grid;place-items:center;padding:16px}
.auth-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:28px;width:100%;max-width:420px}
.auth-card h1{font-size:1.3rem;margin:.2em 0}
.auth-card .sub{color:var(--muted);margin-bottom:18px;font-size:.92rem}
.field{margin-bottom:12px}
.field label{display:block;font-size:.82rem;color:var(--muted);margin-bottom:4px}
.auth-tabs{display:flex;gap:8px;margin-bottom:16px}
.auth-tabs button{flex:1;background:var(--panel2);color:var(--muted)}
.auth-tabs button.active{background:var(--brand);color:#fff}
.msg{font-size:.85rem;padding:.6em .8em;border-radius:8px;margin-top:10px}
.msg.err{background:rgba(239,68,68,.15);color:#fca5a5}
.badge-cargo{display:inline-block;background:rgba(37,99,235,.18);color:#93c5fd;padding:.25em .7em;border-radius:999px;font-size:.78rem;font-weight:600;margin-bottom:10px}

/* ---- topbar ---- */
.top{position:sticky;top:0;z-index:5;background:rgba(15,23,42,.92);backdrop-filter:blur(6px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:14px}
.top .logo{font-weight:800;letter-spacing:.3px}
.top .logo small{display:block;font-weight:500;color:var(--muted);font-size:.72rem}
.spacer{flex:1}
.chip{display:inline-flex;align-items:center;gap:6px;background:var(--panel2);border:1px solid var(--line);padding:.35em .7em;border-radius:999px;font-size:.82rem}
.chip .gold{color:var(--gold)}

/* ---- dashboard ---- */
.grid{display:grid;grid-template-columns:2fr 1fr;gap:16px}
@media(max-width:820px){.grid{grid-template-columns:1fr}}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin-bottom:16px}
.card h2{margin:.1em 0 .6em;font-size:1.05rem}
.levelbar{height:12px;background:#0b1220;border-radius:999px;overflow:hidden;border:1px solid var(--line)}
.levelbar > i{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand2));transition:width .4s}
.stat-row{display:flex;gap:12px;flex-wrap:wrap;margin:10px 0}
.stat{flex:1;min-width:120px;background:var(--panel2);border:1px solid var(--line);border-radius:12px;padding:12px}
.stat b{display:block;font-size:1.5rem}
.stat span{color:var(--muted);font-size:.8rem}

/* ---- disciplinas ---- */
.disc{border-left:4px solid var(--c,var(--brand));background:var(--panel2);border-radius:12px;padding:14px;margin-bottom:12px}
.disc-head{display:flex;align-items:center;gap:10px;cursor:pointer}
.disc-head .ic{font-size:1.5rem}
.disc-head .meta{color:var(--muted);font-size:.8rem}
.disc-prog{height:7px;background:#0b1220;border-radius:999px;overflow:hidden;margin-top:8px}
.disc-prog > i{display:block;height:100%;background:var(--c,var(--brand))}
.mod{margin:10px 0 0 6px}
.mod h4{margin:.5em 0 .3em;font-size:.9rem;color:var(--muted)}
.aula{display:flex;align-items:center;gap:10px;padding:.55em .7em;border-radius:9px;cursor:pointer}
.aula:hover{background:rgba(255,255,255,.04)}
.aula .tick{width:22px;height:22px;border-radius:999px;border:2px solid var(--line);display:grid;place-items:center;font-size:.7rem;flex:none}
.aula.done .tick{background:var(--ok);border-color:var(--ok);color:#06240f}
.aula .t{flex:1}
.aula .min{color:var(--muted);font-size:.78rem}

/* ---- badges ---- */
.badges{display:flex;flex-wrap:wrap;gap:10px}
.bdg{width:72px;text-align:center;opacity:.35;filter:grayscale(1)}
.bdg.on{opacity:1;filter:none}
.bdg .e{font-size:1.8rem}
.bdg small{display:block;font-size:.65rem;color:var(--muted);margin-top:2px;line-height:1.2}
.rank li{display:flex;gap:10px;padding:.35em 0;border-bottom:1px solid var(--line);font-size:.9rem}
.rank .pos{color:var(--muted);width:22px}
.rank .xp{margin-left:auto;color:var(--gold)}

/* ---- lesson view ---- */
.lesson{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.lesson h1{font-size:1.4rem;margin:.1em 0}
.lesson .path{color:var(--muted);font-size:.82rem;margin-bottom:14px}
.player{display:flex;align-items:center;gap:10px;background:var(--panel2);border:1px solid var(--line);border-radius:12px;padding:10px 14px;margin-bottom:16px}
.player .controls{display:flex;gap:8px}
.player small{color:var(--muted)}
.content{font-size:.98rem}
.content h3{color:#93c5fd;margin:1.1em 0 .4em;font-size:1.02rem}
.content table{border-collapse:collapse;width:100%;margin:.6em 0;font-size:.9rem}
.content th,.content td{border:1px solid var(--line);padding:.4em .6em;text-align:left}
.content th{background:var(--panel2)}
.content ul,.content ol{padding-left:1.3em}
.content li{margin:.2em 0}

/* ---- quiz ---- */
.quiz{margin-top:20px;border-top:1px solid var(--line);padding-top:16px}
.q{background:var(--panel2);border:1px solid var(--line);border-radius:12px;padding:14px;margin-bottom:12px}
.q .qt{font-weight:600;margin-bottom:8px}
.opt{display:block;padding:.6em .8em;border:1px solid var(--line);border-radius:9px;margin:6px 0;cursor:pointer}
.opt:hover{background:rgba(255,255,255,.04)}
.opt.sel{border-color:var(--brand2);background:rgba(37,99,235,.12)}
.opt.ok{border-color:var(--ok);background:rgba(34,197,94,.14)}
.opt.no{border-color:var(--err);background:rgba(239,68,68,.14)}
.exp{font-size:.85rem;color:var(--muted);margin-top:6px;padding-left:4px}
.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:var(--ok);color:#06240f;font-weight:700;padding:.8em 1.4em;border-radius:12px;box-shadow:0 8px 30px rgba(0,0,0,.4);z-index:50;animation:pop .3s}
@keyframes pop{from{transform:translateX(-50%) scale(.8);opacity:0}to{transform:translateX(-50%) scale(1);opacity:1}}
.footer{color:var(--muted);font-size:.78rem;text-align:center;padding:24px}

/* ---- catálogo de concursos ---- */
.catalogo{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
.concurso-card{display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);border-left:5px solid var(--c,var(--brand));border-radius:var(--radius);padding:18px;cursor:pointer;transition:.15s}
.concurso-card:hover{transform:translateY(-3px);border-color:var(--c,var(--brand2));box-shadow:0 10px 30px rgba(0,0,0,.35)}
.concurso-card .cc-ic{font-size:2rem}
.concurso-card h3{margin:.3em 0 .1em;font-size:1.05rem}
.cc-org{color:var(--muted);font-size:.82rem}
.cc-desc{font-size:.88rem;margin:.5em 0;color:var(--txt)}
.cc-meta{color:var(--muted);font-size:.78rem}
.cc-go{margin-top:auto;padding-top:12px;color:var(--c,var(--brand2));font-weight:700;font-size:.9rem}
textarea{outline:none}
textarea:focus,input:focus{border-color:var(--brand2)}

/* ---- notícias ---- */
.noticia{display:flex;flex-direction:column;gap:2px;padding:.55em .2em;border-bottom:1px solid var(--line);text-decoration:none}
.noticia:hover{background:rgba(255,255,255,.04)}
.noticia .nt{color:var(--txt);font-size:.88rem;line-height:1.3}
.noticia .nf{color:var(--brand2);font-size:.72rem;font-weight:600}
.nupd{color:var(--muted);font-size:.72rem;margin-top:8px;text-align:right}
.doc-link{display:block;padding:.4em .2em;color:var(--brand2);text-decoration:none;font-size:.85rem;border-bottom:1px dashed var(--line)}
.doc-link:hover{color:#fff}
.links-oficiais{margin-top:6px}

/* ---- referências ---- */
.ref-lista{padding-left:1.2em;margin:.2em 0}
.ref-lista li{margin:.35em 0;font-size:.88rem;line-height:1.45}
.ref-grupo{border-left:3px solid var(--line);padding-left:12px;margin:.4em 0}

/* ---- provas anteriores ---- */
.q-prova .qt{font-weight:600;line-height:1.5}
.q-tag{display:inline-block;background:rgba(37,99,235,.18);color:#93c5fd;padding:.15em .6em;border-radius:999px;font-size:.72rem;font-weight:700}
.q-tag.alt{background:var(--panel2);color:var(--muted)}