:root{--fundo:#0e171c;--cartao:#172630;--cartao2:#21343f;--texto:#f2f6f7;--suave:#9bb0ba;--destaque:#c5d22d;--grafite:#334a55;--sobre-destaque:#16242b;--ok:#34c759;--borda:rgba(255,255,255,.08)}
*{box-sizing:border-box;margin:0}
[hidden]{display:none!important}
body{background:var(--fundo);color:var(--texto);font-family:Poppins,system-ui,sans-serif;min-height:100vh}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0}
.link{background:none;color:var(--suave)}
.link:hover{color:var(--texto)}
header{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:32px;padding:14px 4vw;
  background:linear-gradient(#0e171c 60%,rgba(14,23,28,0))}
.marca{display:flex;align-items:center;gap:12px;font-weight:500;font-size:16px;color:var(--suave)}
.marca img{height:38px}
.marca span{border-left:1px solid var(--borda);padding-left:12px}
.logo-entrar{height:46px;margin-bottom:18px}
nav{display:flex;gap:22px;flex:1}
nav a{color:var(--suave);font-size:15px}
nav a.ativo,nav a:hover{color:var(--texto)}
.perfil{display:flex;align-items:center;gap:10px;font-size:14px}
.perfil img{width:34px;height:34px;border-radius:50%;object-fit:cover}
main{padding:0 4vw 80px}
.btn{background:var(--destaque);color:var(--sobre-destaque);padding:12px 26px;border-radius:10px;font-weight:600;display:inline-block}
.btn:hover{filter:brightness(1.1)}
.btn.claro{background:#fff;color:#111}
.btn.cinza{background:var(--cartao2);color:var(--texto)}
.btn:disabled{opacity:.4;cursor:not-allowed}

/* entrar */
.entrar{min-height:100vh;display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:40px;padding:0 6vw}
.entrar .mascote{display:flex;justify-content:center}
.entrar .mascote img{max-height:78vh;border-radius:28px;box-shadow:0 30px 80px rgba(0,0,0,.5)}
.caixa{background:var(--cartao);border:1px solid var(--borda);border-radius:20px;padding:40px;max-width:440px}
.caixa h1{font-size:30px;margin:8px 0 6px}
.caixa p{color:var(--suave);margin-bottom:24px}
label{display:block;font-size:14px;color:var(--suave);margin:14px 0 6px}
input,select{width:100%;padding:13px 14px;border-radius:10px;border:1px solid var(--borda);background:#0f1219;color:var(--texto);font:inherit}
.erro{color:#ff6b81;font-size:14px;margin-top:12px;min-height:20px}

/* vitrine */
.hero{display:grid;grid-template-columns:1.3fr .7fr;align-items:center;gap:30px;margin:10px 0 40px;
  background:radial-gradient(circle at 80% 30%,rgba(197,210,45,.25),transparent 55%),var(--cartao);border-radius:24px;padding:44px 48px;overflow:hidden}
.hero h1{font-size:40px;line-height:1.15;margin-bottom:12px}
.hero p{color:var(--suave);font-size:17px;max-width:620px;margin-bottom:24px}
.hero .boneco{justify-self:center;height:300px;border-radius:20px}
.balao{display:inline-block;background:#fff;color:#111;border-radius:16px;padding:10px 16px;font-weight:600;margin-bottom:16px;position:relative}
.fileira{margin-bottom:44px}
.fileira-topo{display:flex;align-items:baseline;gap:16px;margin-bottom:14px}
.fileira h2{font-size:22px}
.fileira .conta{color:var(--suave);font-size:14px}
.fileira .cert{margin-left:auto;font-size:14px;color:var(--ok)}
.trilho{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(260px,300px);gap:16px;overflow-x:auto;padding-bottom:10px;scrollbar-width:thin}
.card{background:var(--cartao);border-radius:14px;overflow:hidden;border:1px solid var(--borda);transition:transform .2s;position:relative;display:block}
.card:hover{transform:scale(1.03)}
.card .img{aspect-ratio:16/9;background:#222 center/cover;position:relative}
.card .img.sem{background:linear-gradient(135deg,#1e2330,#11141b);display:flex;align-items:center;justify-content:center}
.card .img.sem img{height:80%;border-radius:12px;opacity:.85}
.card .num{position:absolute;left:12px;bottom:6px;font-size:54px;font-weight:700;color:#fff;text-shadow:0 2px 12px rgba(0,0,0,.7);line-height:1}
.card .corpo{padding:12px 14px 16px}
.card h3{font-size:15px;font-weight:600;line-height:1.35}
.card .selo{position:absolute;top:10px;right:10px;font-size:12px;font-weight:600;padding:4px 10px;border-radius:20px;background:rgba(0,0,0,.65)}
.selo.aprovada{background:var(--ok);color:#06210f}
.selo.prova{background:var(--destaque);color:var(--sobre-destaque)}
.card.trava{cursor:not-allowed}
.card.trava .img{filter:grayscale(1) brightness(.45)}
.barra{height:4px;background:rgba(255,255,255,.12)}
.barra i{display:block;height:100%;background:var(--destaque)}

/* aula */
.aula{display:grid;grid-template-columns:1fr 340px;gap:28px;margin-top:10px}
.voltar{color:var(--suave);font-size:14px;display:inline-block;margin:6px 0 14px}
.player{background:#000;border-radius:16px;overflow:hidden;position:relative}
.player video{width:100%;display:block;aspect-ratio:16/9;background:#000}
.controles{display:flex;align-items:center;gap:10px;padding:12px 14px;background:var(--cartao);flex-wrap:wrap}
.controles .tempo{color:var(--suave);font-size:13px;margin-right:auto}
.vel{background:var(--cartao2);color:var(--texto);padding:6px 12px;border-radius:8px;font-size:13px}
.vel.on{background:var(--destaque);color:var(--sobre-destaque)}
.aviso{font-size:13px;color:var(--suave);padding:10px 14px}
.lado{background:var(--cartao);border-radius:16px;padding:22px;align-self:start}
.lado h2{font-size:20px;margin:4px 0 14px}
.lado ul{padding-left:18px;color:var(--suave);font-size:14px;line-height:1.7}
.trava-prova{margin-top:22px;padding:16px;border-radius:12px;background:var(--cartao2);font-size:14px;color:var(--suave)}
.trava-prova.livre{background:rgba(197,210,45,.12);color:var(--texto)}

/* prova */
.prova{max-width:820px;margin:20px auto}
.prova .topo{display:flex;align-items:center;gap:18px;margin-bottom:24px}
.prova .topo img{width:84px;height:84px;border-radius:50%;object-fit:cover}
.q{background:var(--cartao);border-radius:16px;padding:24px;margin-bottom:18px;border:2px solid transparent}
.q.errou{border-color:#ff7a6b}.q.acertou{border-color:var(--ok)}
.q h3{font-size:18px;margin-bottom:14px}
.op{display:flex;gap:12px;align-items:center;padding:13px 16px;border-radius:12px;background:var(--cartao2);margin-top:10px;cursor:pointer;border:2px solid transparent}
.op:hover{border-color:rgba(255,255,255,.2)}
.op.sel{border-color:var(--destaque);background:rgba(197,210,45,.12)}
.op.certa{border-color:var(--ok);background:rgba(52,199,89,.14)}
.op b{color:var(--destaque);width:20px}
.resultado{text-align:center;background:var(--cartao);border-radius:20px;padding:34px;margin-bottom:22px}
.resultado img{height:220px;border-radius:18px;margin-bottom:14px}
.resultado h2{font-size:28px;margin-bottom:8px}
.resultado p{color:var(--suave);margin-bottom:20px}

/* gestor */
.painel h1{font-size:28px;margin:10px 0 20px}
.tabela{overflow-x:auto;background:var(--cartao);border-radius:16px;margin-bottom:30px}
table{border-collapse:collapse;width:100%;font-size:14px}
th,td{padding:10px 12px;border-bottom:1px solid var(--borda);text-align:left;white-space:nowrap}
th{color:var(--suave);font-weight:500}
.ponto{display:inline-block;width:26px;text-align:center;border-radius:6px;font-size:12px;padding:2px 0}
.ponto.aprovada{background:var(--ok);color:#06210f}.ponto.prova{background:var(--destaque);color:var(--sobre-destaque)}
.ponto.liberada{background:#3a4152}.ponto.bloqueada,.ponto.em_breve{background:#1f2430;color:#555}
.form-aluno{display:grid;grid-template-columns:1fr 1fr auto;gap:12px;align-items:end;background:var(--cartao);padding:20px;border-radius:16px;margin-bottom:30px}
.senha-nova{margin-top:10px;color:var(--ok)}

@media (max-width:900px){
  .entrar{grid-template-columns:1fr;padding:30px 16px}.entrar .mascote img{max-height:36vh}
  .hero{grid-template-columns:1fr;padding:28px}.hero .boneco{height:200px}.hero h1{font-size:28px}
  .aula{grid-template-columns:1fr}
  header{gap:12px;padding:12px 16px}nav{gap:12px}.perfil span{display:none}
  .marca img{height:22px}.marca span{display:none}
  nav a{font-size:14px;white-space:nowrap}
  #link-gestor{font-size:0}#link-gestor:after{content:"Gestor";font-size:14px}
  .hero .boneco{height:160px}
  .fileira-topo{flex-wrap:wrap;gap:4px 12px}
  main{padding:0 16px 60px}
  .form-aluno{grid-template-columns:1fr}
}