/* Arena de Estudos - visual system */
:root{
  --bg:#0B0A1F; --bg2:#14103A;
  --card:rgba(255,255,255,.06); --card-solid:#1B1740;
  --stroke:rgba(255,255,255,.12); --stroke-strong:rgba(255,255,255,.22);
  --txt:#F3F1FF; --txt-dim:#A9A3D4; --txt-faint:#736CA8;
  --roxo:#7C5CFF; --rosa:#FF4D8D; --ciano:#00C2A8; --amarelo:#FFC531;
  --laranja:#FF8A3D; --azul:#3DA5FF; --verde:#2FD46A; --vermelho:#FF4E4E;
  --ok:#2FD46A; --erro:#FF4E4E;
  --r-lg:26px; --r-md:18px; --r-sm:12px;
  --sombra:0 18px 44px rgba(0,0,0,.45);
  --mola:cubic-bezier(.34,1.56,.64,1);
  --safe-b:env(safe-area-inset-bottom,0px);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0;height:100%}
body{
  font-family:'Nunito',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  background:var(--bg); color:var(--txt);
  overflow-x:hidden; overscroll-behavior-y:contain;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,.fonte-jogo{font-family:'Baloo 2','Nunito',system-ui,sans-serif;font-weight:800;letter-spacing:-.01em}
button{font-family:inherit;color:inherit;border:0;background:none;cursor:pointer}
.oculto{display:none !important}

/* fundo animado */
#fundo{position:fixed;inset:0;z-index:0;overflow:hidden;background:
  radial-gradient(120% 90% at 50% -10%, #241a5e 0%, var(--bg2) 42%, var(--bg) 100%)}
.bolha{position:absolute;border-radius:50%;filter:blur(70px);opacity:.42;animation:flutuar 22s ease-in-out infinite}
.b1{width:46vmax;height:46vmax;left:-14vmax;top:-12vmax;background:var(--roxo)}
.b2{width:38vmax;height:38vmax;right:-12vmax;top:14vmax;background:var(--rosa);animation-delay:-7s}
.b3{width:42vmax;height:42vmax;left:8vmax;bottom:-20vmax;background:var(--ciano);animation-delay:-13s;opacity:.3}
@keyframes flutuar{0%,100%{transform:translate3d(0,0,0) scale(1)}33%{transform:translate3d(4vmax,-5vmax,0) scale(1.12)}66%{transform:translate3d(-5vmax,4vmax,0) scale(.92)}}
@media (prefers-reduced-motion:reduce){.bolha{animation:none}}

#confete{position:fixed;inset:0;z-index:60;pointer-events:none}

/* layout */
#app{position:relative;z-index:1;max-width:560px;margin:0 auto;padding:0 16px calc(28px + var(--safe-b));min-height:100%}
.tela{animation:entrar .32s var(--mola) both}
@keyframes entrar{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}

/* HUD do jogador */
.hud{position:sticky;top:0;z-index:20;padding:12px 0 10px;
  background:linear-gradient(180deg,rgba(11,10,31,.94) 62%,rgba(11,10,31,0));backdrop-filter:blur(12px)}
.hud-linha{display:flex;align-items:center;gap:10px}
.avatar{width:46px;height:46px;border-radius:15px;display:grid;place-items:center;font-size:24px;flex:0 0 auto;
  background:linear-gradient(145deg,var(--roxo),var(--rosa));box-shadow:0 8px 20px rgba(124,92,255,.42)}
.hud-meio{flex:1;min-width:0}
.hud-nome{font-size:13px;font-weight:800;color:var(--txt-dim);display:flex;gap:6px;align-items:center}
.nivel-tag{background:var(--roxo);color:#fff;border-radius:999px;padding:1px 9px;font-size:11px;font-weight:800}
.barra{height:9px;border-radius:999px;background:rgba(255,255,255,.1);overflow:hidden;margin-top:5px}
.barra span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--ciano),var(--amarelo));
  transition:width .6s var(--mola)}
.hud-stats{display:flex;gap:7px;flex:0 0 auto}
.pill{display:flex;align-items:center;gap:4px;background:var(--card);border:1px solid var(--stroke);
  border-radius:999px;padding:6px 10px;font-size:13px;font-weight:800}

/* cartoes */
.cartao{background:var(--card);border:1px solid var(--stroke);border-radius:var(--r-lg);padding:18px;
  backdrop-filter:blur(14px);box-shadow:var(--sombra)}
.destaque{background:linear-gradient(135deg,rgba(124,92,255,.35),rgba(255,77,141,.25));border-color:var(--stroke-strong)}
.rotulo{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--txt-faint);font-weight:800}

/* botoes */
.btn{display:flex;align-items:center;justify-content:center;gap:9px;width:100%;padding:16px 18px;border-radius:var(--r-md);
  font-weight:800;font-size:16px;background:var(--card);border:1px solid var(--stroke);
  transition:transform .12s var(--mola),filter .18s,box-shadow .18s}
.btn:active{transform:scale(.965)}
.btn-principal{background:linear-gradient(135deg,var(--roxo),var(--rosa));border:0;
  box-shadow:0 10px 24px rgba(124,92,255,.42),inset 0 -3px 0 rgba(0,0,0,.24)}
.btn-ok{background:linear-gradient(135deg,var(--verde),#16b356);border:0;box-shadow:0 10px 24px rgba(47,212,106,.34),inset 0 -3px 0 rgba(0,0,0,.24)}
.btn-fantasma{background:transparent;border:1px solid var(--stroke)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn-linha{display:flex;gap:10px}

/* home */
.capa{text-align:center;padding:22px 18px}
.capa h1{margin:6px 0 2px;font-size:30px;line-height:1.1}
.capa p{margin:0;color:var(--txt-dim);font-size:14px;font-weight:600}
.contador{display:flex;justify-content:center;gap:8px;margin-top:14px}
.cbloco{background:rgba(0,0,0,.28);border-radius:14px;padding:8px 12px;min-width:62px}
.cbloco b{display:block;font-size:22px;font-family:'Baloo 2',sans-serif;line-height:1}
.cbloco small{font-size:10px;color:var(--txt-dim);letter-spacing:.08em;text-transform:uppercase;font-weight:800}

.secao-tit{display:flex;align-items:center;justify-content:space-between;margin:24px 2px 12px}
.secao-tit h2{margin:0;font-size:19px}
.secao-tit span{font-size:12px;color:var(--txt-faint);font-weight:800}

.modos{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.modo{display:flex;flex-direction:column;align-items:flex-start;gap:3px;padding:15px;border-radius:var(--r-md);
  background:var(--card);border:1px solid var(--stroke);text-align:left;transition:transform .12s var(--mola)}
.modo:active{transform:scale(.96)}
.modo .ico{font-size:24px}
.modo b{font-size:15px}
.modo small{font-size:11.5px;color:var(--txt-dim);font-weight:700;line-height:1.3}
.modo.larga{grid-column:1 / -1;flex-direction:row;align-items:center;gap:12px}
.modo.larga .txt{flex:1}
.modo.chefe{background:linear-gradient(135deg,rgba(255,77,141,.4),rgba(255,197,49,.25));border-color:rgba(255,197,49,.4)}

/* trilha */
.trilha{position:relative;display:flex;flex-direction:column;gap:12px}
.fase{display:flex;align-items:center;gap:14px;padding:14px;border-radius:var(--r-md);
  background:var(--card);border:1px solid var(--stroke);width:100%;text-align:left;transition:transform .12s var(--mola)}
.fase:active{transform:scale(.975)}
.fase .selo{width:54px;height:54px;border-radius:18px;display:grid;place-items:center;font-size:26px;flex:0 0 auto;
  position:relative;box-shadow:0 8px 18px rgba(0,0,0,.35)}
.fase .selo::after{content:attr(data-n);position:absolute;top:-6px;left:-6px;width:22px;height:22px;border-radius:50%;
  background:var(--bg2);border:1px solid var(--stroke-strong);font-size:11px;font-weight:800;display:grid;place-items:center;
  font-family:'Baloo 2',sans-serif}
.fase .corpo{flex:1;min-width:0}
.fase .corpo b{display:block;font-size:15.5px;line-height:1.25}
.fase .corpo small{color:var(--txt-dim);font-size:12px;font-weight:700}
.fase .barra{margin-top:7px;height:7px}
.estrelas{font-size:13px;letter-spacing:1px;flex:0 0 auto;opacity:.95}
.estrelas .off{opacity:.2}

/* quiz */
.topo-quiz{position:sticky;top:0;z-index:20;padding:10px 0;
  background:linear-gradient(180deg,rgba(11,10,31,.95) 66%,rgba(11,10,31,0));backdrop-filter:blur(12px)}
.topo-linha{display:flex;align-items:center;gap:10px}
.sair{width:38px;height:38px;border-radius:12px;background:var(--card);border:1px solid var(--stroke);
  display:grid;place-items:center;font-size:17px;flex:0 0 auto}
.vidas{font-size:16px;letter-spacing:1px;flex:0 0 auto}
.vidas .perdida{opacity:.22;filter:grayscale(1)}
.combo{font-family:'Baloo 2',sans-serif;font-size:15px;font-weight:800;color:var(--amarelo);flex:0 0 auto;
  transition:transform .25s var(--mola)}
.combo.pulsa{transform:scale(1.35)}
.crono{display:flex;align-items:center;gap:5px;font-weight:800;font-size:14px;flex:0 0 auto}
.crono.urgente{color:var(--vermelho);animation:bater .6s infinite}
@keyframes bater{0%,100%{transform:scale(1)}50%{transform:scale(1.14)}}

.pergunta{margin-top:16px}
.meta-q{display:flex;gap:8px;align-items:center;margin-bottom:10px;flex-wrap:wrap}
.tag{font-size:10.5px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;padding:4px 9px;border-radius:999px;
  background:rgba(255,255,255,.1);color:var(--txt-dim)}
.tag.dif1{background:rgba(47,212,106,.18);color:#7bf0a8}
.tag.dif2{background:rgba(255,197,49,.18);color:#ffd977}
.tag.dif3{background:rgba(255,78,78,.18);color:#ff9b9b}
.enunciado{font-size:19px;line-height:1.38;font-weight:800;font-family:'Baloo 2',sans-serif;margin:0 0 16px}
.opcoes{display:flex;flex-direction:column;gap:10px}
.opcao{display:flex;align-items:center;gap:12px;padding:14px 15px;border-radius:var(--r-md);text-align:left;
  background:var(--card);border:1.5px solid var(--stroke);font-size:15px;font-weight:700;line-height:1.35;
  transition:transform .12s var(--mola),background .18s,border-color .18s}
.opcao:active{transform:scale(.98)}
.opcao .letra{width:28px;height:28px;border-radius:9px;background:rgba(255,255,255,.1);display:grid;place-items:center;
  font-size:13px;font-weight:800;flex:0 0 auto}
.opcao.sel{border-color:var(--roxo);background:rgba(124,92,255,.2)}
.opcao.certa{border-color:var(--ok);background:rgba(47,212,106,.2)}
.opcao.certa .letra{background:var(--ok);color:#06240f}
.opcao.errada{border-color:var(--erro);background:rgba(255,78,78,.18);animation:tremer .4s}
.opcao.errada .letra{background:var(--erro);color:#2b0606}
.opcao.apagada{opacity:.28;text-decoration:line-through}
@keyframes tremer{10%,90%{transform:translateX(-3px)}30%,70%{transform:translateX(5px)}50%{transform:translateX(-5px)}}

/* ordenar */
.ordenar{display:flex;flex-direction:column;gap:9px}
.item-ordem{display:flex;align-items:center;gap:11px;padding:13px 14px;border-radius:var(--r-md);
  background:var(--card);border:1.5px solid var(--stroke);font-weight:700;font-size:15px;text-align:left;width:100%}
.item-ordem .pos{width:26px;height:26px;border-radius:9px;background:rgba(255,255,255,.1);display:grid;place-items:center;
  font-size:13px;font-weight:800;flex:0 0 auto}
.item-ordem.escolhido .pos{background:var(--roxo)}
.item-ordem.certa{border-color:var(--ok);background:rgba(47,212,106,.18)}
.item-ordem.errada{border-color:var(--erro);background:rgba(255,78,78,.16)}

/* associar */
.associar{display:flex;flex-direction:column;gap:10px}
.par{display:grid;grid-template-columns:1fr;gap:6px;padding:12px;border-radius:var(--r-md);
  background:var(--card);border:1.5px solid var(--stroke)}
.par .chave{font-weight:800;font-size:14.5px;color:var(--amarelo)}
.par select{width:100%;padding:11px 12px;border-radius:12px;background:rgba(0,0,0,.35);color:var(--txt);
  border:1px solid var(--stroke);font-size:14px;font-weight:700;font-family:inherit;appearance:none}
.par.certa{border-color:var(--ok)}
.par.errada{border-color:var(--erro)}

/* power-ups */
.poderes{display:flex;gap:8px;margin-top:16px;justify-content:center;flex-wrap:wrap}
.poder{display:flex;flex-direction:column;align-items:center;gap:2px;padding:9px 11px;border-radius:14px;
  background:var(--card);border:1px solid var(--stroke);min-width:66px}
.poder .ico{font-size:19px}
.poder small{font-size:10px;font-weight:800;color:var(--txt-dim)}
.poder .custo{font-size:10px;color:var(--amarelo);font-weight:800}
.poder:disabled{opacity:.32}

/* feedback */
#feedback{position:fixed;left:0;right:0;bottom:0;z-index:40;transform:translateY(102%);
  transition:transform .34s var(--mola);padding:0 16px calc(16px + var(--safe-b))}
#feedback.aberto{transform:none}
.fb-caixa{max-width:560px;margin:0 auto;border-radius:24px 24px 18px 18px;padding:18px;
  border:1px solid var(--stroke-strong);box-shadow:0 -14px 44px rgba(0,0,0,.55);backdrop-filter:blur(18px)}
.fb-caixa.ok{background:linear-gradient(180deg,rgba(47,212,106,.22),rgba(20,16,58,.96))}
.fb-caixa.erro{background:linear-gradient(180deg,rgba(255,78,78,.22),rgba(20,16,58,.96))}
.fb-topo{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.fb-topo .emoji{font-size:28px}
.fb-topo b{font-size:20px;font-family:'Baloo 2',sans-serif}
.fb-topo .xp{margin-left:auto;font-weight:800;color:var(--amarelo);font-size:15px}
.fb-texto{font-size:14.5px;line-height:1.5;color:#E8E5FF;font-weight:600;margin:0 0 10px}
.fb-fonte{font-size:12px;color:var(--txt-dim);font-weight:800;margin:0 0 14px}
.fb-fonte::before{content:'📎 '}

/* resultado */
.medalha{font-size:74px;text-align:center;line-height:1;animation:brotar .55s var(--mola) both}
@keyframes brotar{from{transform:scale(.3) rotate(-18deg);opacity:0}to{transform:none;opacity:1}}
.placar{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0}
.placar div{background:rgba(0,0,0,.26);border-radius:16px;padding:12px 8px;text-align:center}
.placar b{display:block;font-size:22px;font-family:'Baloo 2',sans-serif;line-height:1.1}
.placar small{font-size:10.5px;color:var(--txt-dim);text-transform:uppercase;letter-spacing:.07em;font-weight:800}
.lista-erros{display:flex;flex-direction:column;gap:9px;margin-top:8px}
.erro-item{background:rgba(0,0,0,.22);border-radius:14px;padding:12px;border-left:3px solid var(--erro)}
.erro-item b{display:block;font-size:14px;line-height:1.35;margin-bottom:5px}
.erro-item p{margin:0;font-size:13px;color:var(--txt-dim);line-height:1.45;font-weight:600}
.erro-item .certo{color:var(--ok);font-weight:800}

/* colinha */
.colinha li{margin-bottom:11px;font-size:14.5px;line-height:1.52;font-weight:600;color:#E8E5FF}
.colinha ul{padding-left:20px;margin:0}
.colinha li::marker{color:var(--amarelo)}
.acordeao{margin-bottom:10px;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--stroke);background:var(--card)}
.acordeao>summary{padding:14px 16px;font-weight:800;font-size:15px;cursor:pointer;list-style:none;display:flex;gap:10px;align-items:center}
.acordeao>summary::-webkit-details-marker{display:none}
.acordeao>summary::after{content:'▾';margin-left:auto;transition:transform .2s;color:var(--txt-faint)}
.acordeao[open]>summary::after{transform:rotate(180deg)}
.acordeao .conteudo{padding:0 16px 16px}

/* toast + nivel */
#toast{position:fixed;left:50%;top:16px;transform:translate(-50%,-160%);z-index:70;padding:11px 18px;border-radius:999px;
  background:linear-gradient(135deg,var(--roxo),var(--rosa));font-weight:800;font-size:14px;box-shadow:var(--sombra);
  transition:transform .4s var(--mola);white-space:nowrap;max-width:92vw;overflow:hidden;text-overflow:ellipsis}
#toast.mostra{transform:translate(-50%,0)}
#rodape{position:fixed;left:0;right:0;bottom:0;z-index:30;padding:10px 16px calc(10px + var(--safe-b));
  background:linear-gradient(0deg,rgba(11,10,31,.97) 62%,rgba(11,10,31,0))}
#rodape .interno{max-width:560px;margin:0 auto}
.espacador{height:96px}
.rodape-nota{text-align:center;font-size:11.5px;color:var(--txt-faint);font-weight:700;margin-top:22px;line-height:1.6}