:root{
  --fundo:#14161a; --painel:#1b1e23; --painel2:#23272e; --borda:#2e333b;
  --texto:#e8e6e1; --suave:#9aa0a8; --acento:#e0a84f; --acento2:#f2c374;
  --usuario:#2a2f37; --erro:#e06c5f;
  --raio:14px; --fonte:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:ui-monospace,"JetBrains Mono",Consolas,monospace;
}
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{background:var(--fundo);color:var(--texto);font:15px/1.6 var(--fonte);-webkit-font-smoothing:antialiased}
button{font:inherit;color:inherit;cursor:pointer}
a{color:var(--acento2)}

.logo{display:flex;align-items:center;gap:.55rem;font-weight:650;font-size:1.1rem;letter-spacing:.2px}
.logo-dot{width:14px;height:14px;border-radius:50%;background:radial-gradient(circle at 35% 35%,var(--acento2),var(--acento) 60%,#a8702a);box-shadow:0 0 18px rgba(224,168,79,.45)}
.logo-dot.grande{width:46px;height:46px;display:block}

/* Login */
.auth{min-height:100%;display:grid;place-items:center;padding:24px}
.auth-card{width:100%;max-width:380px;background:var(--painel);border:1px solid var(--borda);border-radius:18px;padding:32px 28px}
.auth-card .logo{font-size:1.4rem;margin-bottom:.3rem}
.auth-sub{color:var(--suave);margin:0 0 1.4rem}
.auth-card form{display:grid;gap:.9rem}
.auth-card label{display:grid;gap:.35rem;font-size:.85rem;color:var(--suave)}
.auth-card input{background:var(--fundo);border:1px solid var(--borda);border-radius:10px;padding:.7rem .8rem;color:var(--texto);font:inherit}
.auth-card input:focus{outline:2px solid var(--acento);outline-offset:-1px;border-color:transparent}
.btn-primario{margin-top:.4rem;background:var(--acento);color:#1a1408;border:0;border-radius:10px;padding:.75rem;font-weight:650}
.btn-primario:hover{background:var(--acento2)}
.troca{text-align:center;color:var(--suave);font-size:.9rem;margin:1.2rem 0 0}
.erro{background:rgba(224,108,95,.12);border:1px solid rgba(224,108,95,.4);color:#f1a59b;padding:.6rem .8rem;border-radius:10px;font-size:.9rem}
.aviso{background:rgba(224,168,79,.1);border:1px solid rgba(224,168,79,.35);color:var(--acento2);padding:.6rem .8rem;border-radius:10px;font-size:.9rem}

/* App */
.app{display:flex;height:100%;height:100dvh}
.lateral{width:270px;flex-shrink:0;background:var(--painel);border-right:1px solid var(--borda);display:flex;flex-direction:column;padding:14px}
.lateral-topo{display:flex;justify-content:space-between;align-items:center;padding:4px 6px 14px}
.btn-nova{background:transparent;border:1px solid var(--borda);border-radius:10px;padding:.6rem .8rem;text-align:left}
.btn-nova:hover{background:var(--painel2)}
.lista{flex:1;overflow-y:auto;margin:12px -4px;padding:0 4px}
.item{display:flex;align-items:center;gap:4px;border-radius:9px;padding:0 4px 0 0}
.item:hover,.item.ativo{background:var(--painel2)}
.item a{flex:1;min-width:0;display:block;padding:.5rem .65rem;color:var(--texto);text-decoration:none;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:.92rem}
.item .acoes{display:none;gap:2px}
.item:hover .acoes,.item.ativo .acoes{display:flex}
.item .acoes button{background:none;border:0;color:var(--suave);padding:4px 6px;border-radius:6px;font-size:.8rem}
.item .acoes button:hover{color:var(--texto);background:var(--borda)}
.lista-vazia{color:var(--suave);font-size:.85rem;padding:.5rem .65rem}
.lateral-rodape{border-top:1px solid var(--borda);padding-top:12px;display:flex;align-items:center;justify-content:space-between}
.usuario{display:flex;align-items:center;gap:.55rem;min-width:0}
.avatar{width:30px;height:30px;border-radius:50%;background:var(--painel2);border:1px solid var(--borda);display:grid;place-items:center;font-weight:600;font-size:.85rem;flex-shrink:0}
.usuario-nome{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:.9rem}
.sair{color:var(--suave);font-size:.85rem;text-decoration:none}
.sair:hover{color:var(--texto)}

.principal{flex:1;min-width:0;display:flex;flex-direction:column}
.barra{display:flex;align-items:center;gap:.8rem;padding:12px 20px;border-bottom:1px solid var(--borda)}
.barra h1{flex:1;font-size:1rem;font-weight:600;margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.modelo{font:12px var(--mono);color:var(--suave);border:1px solid var(--borda);border-radius:999px;padding:3px 10px}
.btn-icone{background:none;border:0;font-size:1.15rem;padding:4px 8px;border-radius:8px}
.so-mobile{display:none}

.mensagens{flex:1;overflow-y:auto;padding:24px 20px}
.msg{max-width:780px;margin:0 auto 22px;display:flex;gap:12px}
.msg.user{justify-content:flex-end}
.msg.user .balao{background:var(--usuario);border-radius:var(--raio) var(--raio) 4px var(--raio);padding:.65rem 1rem;max-width:85%;white-space:pre-wrap;word-wrap:break-word}
.msg.assistant .icone{flex-shrink:0;margin-top:5px}
.msg.assistant .balao{flex:1;min-width:0;word-wrap:break-word}
.balao p{margin:0 0 .75rem}.balao p:last-child{margin-bottom:0}
.balao ul,.balao ol{margin:0 0 .75rem;padding-left:1.4rem}
.balao h3,.balao h4{margin:1rem 0 .5rem;font-size:1.02rem}
.balao code{font-family:var(--mono);font-size:.87em;background:var(--painel2);padding:.1em .35em;border-radius:5px}
.balao pre{background:#0f1114;border:1px solid var(--borda);border-radius:10px;padding:.85rem 1rem;overflow-x:auto;margin:0 0 .75rem;position:relative}
.balao pre code{background:none;padding:0;font-size:.85rem;line-height:1.5}
.balao .copiar{position:absolute;top:6px;right:6px;background:var(--painel2);border:1px solid var(--borda);border-radius:6px;font-size:.72rem;padding:2px 8px;color:var(--suave)}
.msg-erro{color:var(--erro);font-size:.9rem;margin-top:.4rem}
.digitando{display:inline-flex;gap:4px;padding:6px 0}
.digitando i{width:7px;height:7px;border-radius:50%;background:var(--suave);animation:pulo 1.2s infinite ease-in-out}
.digitando i:nth-child(2){animation-delay:.15s}.digitando i:nth-child(3){animation-delay:.3s}
@keyframes pulo{0%,80%,100%{opacity:.3;transform:translateY(0)}40%{opacity:1;transform:translateY(-4px)}}
.cursor::after{content:"▍";color:var(--acento);animation:pisca 1s steps(1) infinite;margin-left:1px}
@keyframes pisca{50%{opacity:0}}

.vazio{max-width:640px;margin:10vh auto 0;text-align:center}
.vazio-logo{display:flex;justify-content:center;margin-bottom:1rem}
.vazio h2{font-weight:600;font-size:1.45rem;margin:0 0 1.6rem}
.sugestoes{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.sugestoes button{background:var(--painel);border:1px solid var(--borda);border-radius:12px;padding:.8rem;text-align:left;color:var(--suave);font-size:.9rem}
.sugestoes button:hover{background:var(--painel2);color:var(--texto)}

.entrada{padding:8px 20px 14px}
.entrada-caixa{max-width:780px;margin:0 auto;display:flex;align-items:flex-end;gap:8px;background:var(--painel);border:1px solid var(--borda);border-radius:16px;padding:8px 8px 8px 14px}
.entrada-caixa:focus-within{border-color:#4a505a}
.entrada textarea{flex:1;background:none;border:0;resize:none;color:var(--texto);font:inherit;max-height:220px;padding:6px 0;outline:none}
.btn-enviar,.btn-parar{width:38px;height:38px;border-radius:10px;border:0;background:var(--acento);color:#1a1408;font-size:1rem;flex-shrink:0}
.btn-enviar:disabled{opacity:.35;cursor:default}
.btn-parar{background:var(--painel2);color:var(--texto);border:1px solid var(--borda)}
.nota{text-align:center;color:var(--suave);font-size:.75rem;margin:.5rem 0 0}

@media (max-width:820px){
  .so-mobile{display:inline-block}
  .lateral{position:fixed;inset:0 auto 0 0;z-index:20;transform:translateX(-100%);transition:transform .2s;box-shadow:0 0 40px rgba(0,0,0,.5)}
  .lateral.aberta{transform:none}
  .mensagens{padding:16px 12px}
  .entrada{padding:6px 10px 10px}
  .sugestoes{grid-template-columns:1fr}
  .item .acoes{display:flex}
}