/* =========================================================
   THEO - interface do aluno (prototipo)
   Identidade herdada de referencia-hsc/site-widget/theo.css.
   Regras travadas: paleta HSC, bullet sempre em check, bolha
   do Theo branca a esquerda, bolha do aluno azul a direita,
   sem emoji, sem traco sob titulo.
   ========================================================= */

/* ---------- Tokens ---------- */
:root{
  --marca:#011072;
  --marca-forte:#02148a;
  --accent:#4a6cf7;

  --tela:#f5f6fa;
  --superficie:#ffffff;
  --superficie-2:#f8fafd;
  --topo:#011072;
  --topo-txt:#ffffff;
  --lateral-bg:#ffffff;

  --texto:#22293a;
  --texto-2:#8a92a3;
  --texto-forte:#151b2b;
  --borda:#e9edf4;
  --linha:#eef1f6;

  --bolha-aluno:#011072;
  --bolha-aluno-txt:#ffffff;
  --bullet-fundo:rgba(1,16,114,.12);
  --bullet-cor:#011072;

  --ok:#12b76a;
  --atencao:#f79009;
  --alerta:#e5484d;

  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-full:999px;

  --s1:0 1px 2px rgba(1,16,114,.05), 0 1px 3px rgba(1,16,114,.04);
  --s2:0 4px 16px rgba(1,16,114,.08);
  --s3:0 24px 64px rgba(1,16,114,.18);

  --saida:cubic-bezier(.16,1,.3,1);
  --mola:cubic-bezier(.34,1.4,.64,1);
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}

html[data-tema="escuro"]{
  --tela:#0b0f1c;
  --superficie:#151b2d;
  --superficie-2:#1b2236;
  --topo:#0f1425;
  --lateral-bg:#101627;

  --texto:#e9edf6;
  --texto-2:#98a2ba;
  --texto-forte:#f4f7fd;
  --borda:#26304a;
  --linha:#212a41;

  --marca-forte:#5f7bff;
  --accent:#7a92ff;
  --bolha-aluno:#22319e;
  --bullet-fundo:rgba(122,146,255,.18);
  --bullet-cor:#9db0ff;

  --s1:0 1px 2px rgba(0,0,0,.3);
  --s2:0 6px 20px rgba(0,0,0,.35);
  --s3:0 24px 64px rgba(0,0,0,.5);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:var(--sans);
  color:var(--texto);
  background:var(--tela);
  display:flex;
  flex-direction:column;
  height:100dvh;
  overflow:hidden;
  -webkit-font-smoothing:antialiased;
  transition:background .35s var(--saida), color .35s var(--saida);
}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}

.pular{
  position:absolute;left:-9999px;top:8px;z-index:60;
  background:var(--superficie);color:var(--texto);
  padding:10px 16px;border-radius:var(--r-md);box-shadow:var(--s2);
  font-size:14px;text-decoration:none;
}
.pular:focus{left:12px}

/* ---------- Cabecalho ---------- */
.topo{
  flex-shrink:0;
  position:relative;
  z-index:20;
  background:var(--topo);
  color:var(--topo-txt);
  display:flex;
  align-items:center;
  gap:14px;
  padding:12px 20px;
  transition:background .35s var(--saida);
}
.topo::after{
  content:"";
  position:absolute;inset:0;
  background:radial-gradient(120% 160% at 12% 0%, rgba(255,255,255,.10), transparent 62%);
  pointer-events:none;
}
.topo-info{display:flex;align-items:center;gap:12px;min-width:0;flex:1}
.topo-txt{display:flex;flex-direction:column;min-width:0}
.topo-nome{font-size:16px;font-weight:600;line-height:1.25;letter-spacing:.01em}
.topo-status{
  font-size:12px;opacity:.72;line-height:1.3;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}

.avatar{
  position:relative;
  width:40px;height:40px;
  border-radius:50%;
  flex-shrink:0;
  background:rgba(255,255,255,.14);
  border:2px solid rgba(192,192,192,.5);
  overflow:visible;
}
.avatar img{
  width:100%;height:100%;
  object-fit:cover;display:block;border-radius:50%;
}
.ponto{
  position:absolute;right:-1px;bottom:-1px;
  width:10px;height:10px;border-radius:50%;
  background:#4ade80;
  border:2px solid var(--topo);
  transition:border-color .35s var(--saida);
}
.ponto::after{
  content:"";position:absolute;inset:-2px;
  border-radius:50%;border:1px solid #4ade80;
  animation:pulso 2.8s var(--saida) infinite;
}
@keyframes pulso{
  0%{opacity:.55;transform:scale(1)}
  70%,100%{opacity:0;transform:scale(2.1)}
}

.topo-dir{display:flex;align-items:center;gap:10px;flex-shrink:0}

.icone-btn{
  width:36px;height:36px;
  display:flex;align-items:center;justify-content:center;
  background:transparent;border:none;color:inherit;
  border-radius:var(--r-md);cursor:pointer;
  opacity:.8;
  transition:opacity .2s ease, background .2s ease, transform .3s var(--mola);
}
.icone-btn:hover{opacity:1;background:rgba(255,255,255,.12)}
.icone-btn:active{transform:scale(.92)}

#btn-tema .ico-lua{display:none}
html[data-tema="escuro"] #btn-tema .ico-sol{display:none}
html[data-tema="escuro"] #btn-tema .ico-lua{display:block}

/* Cota: sempre em porcentagem, nunca em token (decisao 8.2) */
.cota{position:relative;display:flex;align-items:center;gap:9px}
.cota-rotulo{font-size:12px;opacity:.8;white-space:nowrap}
.cota-barra{
  width:110px;height:6px;
  background:rgba(255,255,255,.2);
  border-radius:var(--r-full);
  overflow:hidden;
}
.cota-preenchida{
  display:block;height:100%;width:0%;
  background:#fff;
  border-radius:var(--r-full);
  transition:width .7s var(--saida), background .4s ease;
}
.cota.em-atencao .cota-preenchida{background:#ffd48a}
.cota.no-limite .cota-preenchida{background:#ff9a9c}
.cota-num{font-size:12px;font-weight:600;font-variant-numeric:tabular-nums;min-width:34px;opacity:.95}

.dica{
  position:absolute;top:calc(100% + 12px);right:0;
  width:250px;
  background:var(--superficie);color:var(--texto);
  font-size:12.5px;line-height:1.5;
  padding:11px 14px;border-radius:var(--r-md);
  border:1px solid var(--borda);
  box-shadow:var(--s2);
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .22s var(--saida), transform .22s var(--saida), visibility .22s;
  pointer-events:none;z-index:30;
}
.cota:hover .dica,.cota:focus-within .dica{opacity:1;visibility:visible;transform:translateY(0)}

/* ---------- Palco e lateral ---------- */
.palco{flex:1;display:flex;min-height:0}

.lateral{
  width:262px;flex-shrink:0;
  background:var(--lateral-bg);
  border-right:1px solid var(--borda);
  display:flex;flex-direction:column;
  padding:16px 12px 12px;
  transition:background .35s var(--saida), border-color .35s var(--saida);
}
.lateral-topo{padding:0 4px 14px}
.nova{
  width:100%;
  display:flex;align-items:center;justify-content:center;gap:8px;
  font-size:13.5px;font-weight:600;
  color:var(--marca);
  background:var(--superficie-2);
  border:1px solid var(--borda);
  border-radius:var(--r-md);
  padding:11px 14px;cursor:pointer;
  transition:border-color .2s ease, background .2s ease, transform .25s var(--mola), box-shadow .25s var(--saida);
}
html[data-tema="escuro"] .nova{color:var(--accent)}
.nova:hover{border-color:var(--accent);transform:translateY(-1px);box-shadow:var(--s1)}
.nova:active{transform:translateY(0) scale(.99)}

.lateral-rotulo{
  margin:0 0 6px;padding:0 10px;
  font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  color:var(--texto-2);
}
.sessoes{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:2px;min-height:0}
.sessao{
  position:relative;
  display:flex;align-items:center;gap:10px;
  width:100%;text-align:left;
  background:transparent;border:none;cursor:pointer;
  padding:10px 12px;border-radius:var(--r-md);
  color:var(--texto-2);
  transition:background .2s ease, color .2s ease;
}
.sessao svg{flex-shrink:0;opacity:.85}
.sessao-txt{display:flex;flex-direction:column;min-width:0;gap:1px}
.sessao-nome{
  font-size:13.5px;font-weight:600;color:var(--texto);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.sessao-quando{font-size:11.5px;color:var(--texto-2)}
.sessao:hover{background:var(--superficie-2)}
.sessao.ativa{background:var(--superficie-2);color:var(--marca)}
html[data-tema="escuro"] .sessao.ativa{color:var(--accent)}
.sessao.ativa::before{
  content:"";position:absolute;left:0;top:50%;
  width:3px;height:20px;margin-top:-10px;
  border-radius:0 3px 3px 0;
  background:var(--marca);
  animation:tracinho .3s var(--saida);
}
html[data-tema="escuro"] .sessao.ativa::before{background:var(--accent)}
@keyframes tracinho{from{height:0;margin-top:0}to{height:20px;margin-top:-10px}}

.lateral-rodape{
  margin-top:10px;padding:12px 14px;
  background:var(--superficie-2);
  border:1px solid var(--borda);
  border-radius:var(--r-md);
  display:flex;flex-direction:column;gap:2px;
}
.turma-nome{font-size:13px;font-weight:600;color:var(--texto-forte)}
.turma-info{font-size:11.5px;color:var(--texto-2)}

.centro{flex:1;display:flex;flex-direction:column;min-width:0;position:relative}

/* ---------- Conversa ---------- */
.conversa{
  flex:1;overflow-y:auto;
  padding:30px 24px 10px;
  scroll-behavior:smooth;
  outline:none;
}
.conversa::-webkit-scrollbar{width:6px}
.conversa::-webkit-scrollbar-track{background:transparent}
.conversa::-webkit-scrollbar-thumb{background:transparent;border-radius:4px;transition:background .3s}
.conversa:hover::-webkit-scrollbar-thumb{background:rgba(138,146,163,.35)}

.trilho{
  max-width:768px;margin:0 auto;
  display:flex;flex-direction:column;gap:18px;
  padding-bottom:8px;
}
/* enquanto so existe a abertura, ela fica centrada na tela */
.trilho.so-abertura{min-height:100%;justify-content:center;padding-bottom:56px}

.grupo{display:flex;flex-direction:column;gap:6px;max-width:100%}
.grupo-aluno{align-items:flex-end}
.grupo-theo{align-items:flex-start}

.msg{
  max-width:min(82%,660px);
  padding:15px 19px;
  font-size:15px;line-height:1.62;
  border-radius:var(--r-lg);
  word-wrap:break-word;
  animation:entra .42s var(--saida) both;
}
@keyframes entra{
  from{opacity:0;transform:translateY(10px) scale(.985)}
  to{opacity:1;transform:none}
}
.msg-theo{
  background:var(--superficie);
  color:var(--texto);
  border:1px solid var(--borda);
  box-shadow:var(--s1);
  border-bottom-left-radius:5px;
  transition:box-shadow .3s var(--saida), background .35s var(--saida), border-color .35s var(--saida);
}
.grupo-theo:hover .msg-theo{box-shadow:var(--s2)}
.msg-aluno{
  background:var(--bolha-aluno);
  color:var(--bolha-aluno-txt);
  border-bottom-right-radius:5px;
  box-shadow:var(--s1);
}
.msg p{margin:0}
.msg p+p,.msg ul+p{margin-top:13px}

/* Bullet sempre em check (regra travada) */
.msg ul{list-style:none;margin:13px 0 0;padding:0}
.msg ul li{
  position:relative;padding-left:26px;margin-bottom:9px;line-height:1.55;
  animation:entraItem .35s var(--saida) both;
}
.msg ul li:last-child{margin-bottom:0}
@keyframes entraItem{from{opacity:0;transform:translateX(-5px)}to{opacity:1;transform:none}}
.msg ul li::before{
  content:"";position:absolute;left:0;top:3px;
  width:16px;height:16px;border-radius:50%;
  background:var(--bullet-fundo);
}
.msg ul li::after{
  content:"";position:absolute;left:0;top:3px;
  width:16px;height:16px;
  background:var(--bullet-cor);
  -webkit-mask:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23fff' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5 10 17 19 7'/%3E%3C/svg%3E") center/9px no-repeat;
  mask:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23fff' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5 10 17 19 7'/%3E%3C/svg%3E") center/9px no-repeat;
}

.cursor{
  display:inline-block;width:2px;height:1.02em;
  margin-left:2px;vertical-align:-2px;
  background:var(--accent);border-radius:1px;
  animation:pisca 1s steps(2,start) infinite;
}
@keyframes pisca{0%,100%{opacity:1}50%{opacity:0}}

/* ---------- Fontes citadas ---------- */
.fontes{
  margin-top:15px;padding-top:13px;
  border-top:1px solid var(--linha);
  display:flex;flex-wrap:wrap;gap:8px;align-items:center;
}
.fontes-rotulo{
  font-size:10.5px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;
  color:var(--texto-2);margin-right:2px;
}
.fonte{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12.5px;font-weight:600;
  color:var(--marca);
  background:var(--superficie-2);
  border:1px solid var(--borda);
  border-radius:var(--r-full);
  padding:6px 13px;cursor:pointer;
  animation:entraFonte .4s var(--saida) both;
  transition:background .2s ease, border-color .2s ease, transform .25s var(--mola), box-shadow .25s var(--saida);
}
html[data-tema="escuro"] .fonte{color:var(--accent)}
@keyframes entraFonte{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.fonte:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--s1)}
.fonte:active{transform:translateY(0)}
.fonte svg{flex-shrink:0;opacity:.7}
.fonte.aberta{border-color:var(--accent);background:rgba(74,108,247,.08)}

/* ---------- Acoes da mensagem ---------- */
.acoes{
  display:flex;gap:2px;padding-left:6px;
  opacity:0;transform:translateY(-3px);
  transition:opacity .25s var(--saida), transform .25s var(--saida);
}
.grupo-theo:hover .acoes,.acoes:focus-within{opacity:1;transform:none}
.acao{
  display:flex;align-items:center;gap:6px;
  font-size:12px;color:var(--texto-2);
  background:transparent;border:none;border-radius:var(--r-sm);
  padding:5px 8px;cursor:pointer;
  transition:color .2s ease, background .2s ease;
}
.acao:hover{color:var(--marca);background:var(--superficie-2)}
html[data-tema="escuro"] .acao:hover{color:var(--accent)}
.acao.marcada{color:var(--ok)}
.acao.marcada svg{animation:pop .35s var(--mola)}
@keyframes pop{0%{transform:scale(.6)}100%{transform:scale(1)}}

/* ---------- Estado de consulta ---------- */
.consultando{
  display:flex;align-items:center;gap:11px;
  padding:14px 19px;
  background:var(--superficie);
  border:1px solid var(--borda);
  border-radius:var(--r-lg);border-bottom-left-radius:5px;
  align-self:flex-start;
  box-shadow:var(--s1);
  animation:entra .42s var(--saida) both;
}
.consultando-txt{
  font-size:13.5px;color:var(--texto-2);
  transition:opacity .25s ease;
}
.consultando-txt.trocando{opacity:0}
.pontos{display:flex;gap:4px;flex-shrink:0}
.pontos i{
  width:6px;height:6px;border-radius:50%;
  background:var(--accent);
  animation:pula 1.4s infinite ease-in-out both;
}
.pontos i:nth-child(2){animation-delay:.16s}
.pontos i:nth-child(3){animation-delay:.32s}
@keyframes pula{
  0%,80%,100%{transform:scale(.6);opacity:.4}
  40%{transform:scale(1);opacity:1}
}

/* ---------- Abertura ---------- */
.abertura{display:flex;flex-direction:column;gap:16px;padding:8px 0 4px}
.abertura-topo{display:flex;align-items:center;gap:14px}
.abertura-foto{
  width:52px;height:52px;border-radius:50%;
  border:2px solid var(--borda);object-fit:cover;flex-shrink:0;
  animation:entraFoto .6s var(--mola) both;
}
@keyframes entraFoto{from{opacity:0;transform:scale(.8)}to{opacity:1;transform:none}}
.abertura-titulo{
  margin:0;font-size:21px;font-weight:600;letter-spacing:-.01em;
  color:var(--texto-forte);
  animation:entra .5s var(--saida) .06s both;
}
.abertura-linha{
  margin:3px 0 0;font-size:14px;color:var(--texto-2);line-height:1.5;
  animation:entra .5s var(--saida) .12s both;
}
.sugestoes{display:flex;flex-wrap:wrap;gap:10px}
.sugestao{
  font-size:13.5px;color:var(--marca);
  background:var(--superficie);
  border:1px solid var(--borda);
  border-radius:var(--r-full);
  padding:10px 17px;cursor:pointer;
  animation:entra .5s var(--saida) both;
  transition:border-color .2s ease, transform .25s var(--mola), box-shadow .25s var(--saida), background .2s ease;
}
html[data-tema="escuro"] .sugestao{color:var(--accent)}
.sugestao:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--s2)}
.sugestao:active{transform:translateY(0) scale(.98)}

/* ---------- Nota de sistema ---------- */
.nota{
  align-self:center;max-width:520px;text-align:center;
  font-size:12.5px;line-height:1.55;color:var(--texto-2);
  background:var(--superficie-2);
  border:1px solid var(--borda);
  border-radius:var(--r-md);
  padding:11px 16px;
  animation:entra .42s var(--saida) both;
}
.nota strong{color:var(--texto);font-weight:600}

/* ---------- Botao descer ---------- */
.descer{
  position:absolute;left:50%;bottom:104px;
  width:38px;height:38px;margin-left:-19px;
  display:flex;align-items:center;justify-content:center;
  background:var(--superficie);color:var(--texto-2);
  border:1px solid var(--borda);border-radius:50%;
  box-shadow:var(--s2);cursor:pointer;z-index:8;
  opacity:0;visibility:hidden;transform:translateY(8px) scale(.9);
  transition:opacity .25s var(--saida), transform .3s var(--mola), visibility .25s, color .2s;
}
.descer.visivel{opacity:1;visibility:visible;transform:none}
.descer:hover{color:var(--marca)}
html[data-tema="escuro"] .descer:hover{color:var(--accent)}

/* ---------- Rodape ---------- */
.rodape{
  flex-shrink:0;
  background:var(--superficie);
  border-top:1px solid var(--borda);
  padding:14px 24px 16px;
  transition:background .35s var(--saida), border-color .35s var(--saida);
}
.rodape-trilho{max-width:768px;margin:0 auto}
.caixa{
  display:flex;gap:10px;align-items:flex-end;
  background:var(--tela);
  border:1px solid var(--borda);
  border-radius:24px;
  padding:6px 6px 6px 8px;
  transition:border-color .25s var(--saida), box-shadow .25s var(--saida), background .35s var(--saida);
}
.caixa.focada{border-color:var(--accent);box-shadow:0 0 0 3px rgba(74,108,247,.12)}
.caixa.travada{opacity:.6}
.entrada{
  flex:1;
  font-family:inherit;font-size:15px;line-height:1.5;
  color:var(--texto);background:transparent;
  border:none;outline:none;resize:none;
  padding:11px 8px 11px 10px;
  max-height:150px;
}
.entrada::placeholder{color:var(--texto-2)}
.enviar{
  position:relative;
  width:40px;height:40px;flex-shrink:0;
  border-radius:50%;border:none;cursor:pointer;
  background:var(--marca);color:#fff;
  display:flex;align-items:center;justify-content:center;
  transition:background .2s ease, transform .3s var(--mola), opacity .2s ease;
}
html[data-tema="escuro"] .enviar{background:var(--accent)}
.enviar:hover:not(:disabled){background:var(--marca-forte);transform:scale(1.06)}
.enviar:active:not(:disabled){transform:scale(.94)}
.enviar:disabled{opacity:.35;cursor:not-allowed;transform:none}
.enviar .ico-parar{display:none}
.enviar.parando .ico-enviar{display:none}
.enviar.parando .ico-parar{display:block}
.enviar.parando{background:var(--texto-2)}

.rodape-linha{
  display:flex;align-items:center;justify-content:center;gap:12px;
  margin-top:9px;min-height:16px;
}
.aviso{margin:0;font-size:11.5px;color:var(--texto-2);text-align:center}
.contador{
  font-size:11.5px;color:var(--texto-2);font-variant-numeric:tabular-nums;
  opacity:0;transition:opacity .25s ease, color .25s ease;
}
.contador.visivel{opacity:1}
.contador.perto{color:var(--atencao)}

/* ---------- Painel da fonte ---------- */
.painel{
  position:fixed;top:0;right:0;bottom:0;
  width:min(400px,100%);
  background:var(--superficie);
  border-left:1px solid var(--borda);
  box-shadow:var(--s3);
  z-index:50;
  display:flex;flex-direction:column;
  transform:translateX(101%);
  visibility:hidden;
  transition:transform .42s var(--saida), visibility .42s;
}
.painel.aberto{transform:none;visibility:visible}
.painel-topo{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 20px 6px;flex-shrink:0;
}
.painel-rotulo{
  font-size:11px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;
  color:var(--texto-2);
}
.painel .icone-btn{color:var(--texto-2)}
.painel .icone-btn:hover{background:var(--superficie-2);color:var(--texto)}
.painel-corpo{flex:1;overflow-y:auto;padding:10px 20px 24px}

.fonte-doc{
  margin:0;font-size:18px;font-weight:600;line-height:1.35;
  color:var(--texto-forte);letter-spacing:-.01em;
}
.fonte-ref{margin:5px 0 0;font-size:13px;color:var(--texto-2)}
.selo{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:14px;
  font-size:11.5px;font-weight:600;
  padding:5px 11px;border-radius:var(--r-full);
}
.selo-hsc{background:rgba(18,183,106,.12);color:#0a7a47}
.selo-norma{background:rgba(247,144,9,.14);color:#9a5b00}
html[data-tema="escuro"] .selo-hsc{background:rgba(18,183,106,.18);color:#5ee0a4}
html[data-tema="escuro"] .selo-norma{background:rgba(247,144,9,.18);color:#ffc069}

.fonte-trecho{
  margin:18px 0 0;padding:16px 18px;
  background:var(--superficie-2);
  border:1px solid var(--borda);
  border-radius:var(--r-md);
  font-size:14px;line-height:1.65;color:var(--texto);
}
.fonte-trecho mark{
  background:rgba(74,108,247,.18);color:inherit;
  padding:1px 3px;border-radius:3px;
}
.fonte-nota{margin:16px 0 0;font-size:12.5px;line-height:1.6;color:var(--texto-2)}

.veu{
  position:fixed;inset:0;z-index:40;
  background:rgba(9,13,26,.42);
  opacity:0;transition:opacity .35s var(--saida);
  -webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);
}
.veu.visivel{opacity:1}

/* ---------- Brinde (aviso curto) ---------- */
.brinde{
  position:fixed;left:50%;bottom:96px;z-index:60;
  transform:translate(-50%,10px);
  background:var(--texto-forte);color:var(--tela);
  font-size:13px;padding:10px 18px;border-radius:var(--r-full);
  box-shadow:var(--s2);
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .3s var(--saida), transform .35s var(--mola), visibility .3s;
}
.brinde.visivel{opacity:1;visibility:visible;transform:translate(-50%,0)}

/* ---------- Mobile ---------- */
.so-mobile{display:none}
@media (max-width:900px){
  .so-mobile{display:flex}
  .lateral{
    position:fixed;top:0;bottom:0;left:0;z-index:45;
    width:274px;
    box-shadow:var(--s3);
    transform:translateX(-101%);visibility:hidden;
    transition:transform .38s var(--saida), visibility .38s;
    padding-top:18px;
  }
  .lateral.aberta{transform:none;visibility:visible}
  .cota-rotulo{display:none}
  .cota-barra{width:64px}
}
@media (max-width:640px){
  .topo{padding:10px 14px;gap:10px}
  .topo-status{font-size:11.5px}
  .conversa{padding:22px 16px 8px}
  .msg{max-width:92%;font-size:14.5px;padding:14px 17px}
  .abertura-titulo{font-size:19px}
  .rodape{padding:12px 14px 14px}
  .descer{bottom:96px}
  .acoes{opacity:1;transform:none}
  .painel{width:100%;border-left:none}
}

/* ---------- Movimento reduzido ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  .conversa{scroll-behavior:auto}
}