/* GenTek, versão cinema: a noite inteira é o palco; o cérebro (canvas fixo) é o único espetáculo.
   O texto é pouco, grande e só acende quando a cena dele chega. */
:root{--noite:#03050A;--gelo:#E8FBFF;--nevoa:#9FB0BA;--ciano:#5FE3E0;--ambar:#F2B84B;--cobalto:#2433C8;--cobalto-luz:#7884FF;
--titulo:"Archivo",system-ui,sans-serif;color-scheme:dark}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--noite)}
body{margin:0;background:var(--noite);color:var(--gelo);font:400 18px/1.55 var(--titulo);-webkit-font-smoothing:antialiased}
h1,h2,p,ul,blockquote{margin:0}
ul{padding:0;list-style:none}
a{color:inherit}
:focus-visible{outline:2px solid var(--ciano);outline-offset:4px;border-radius:6px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
#palco{position:fixed;inset:0;width:100vw;height:100vh;z-index:0;display:block}

/* barra: some durante o filme */
.topo{position:fixed;top:0;left:0;right:0;z-index:5;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px clamp(16px,3vw,36px);
  background:color-mix(in srgb,var(--noite) 55%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid rgb(232 251 255/.08);transition:opacity .8s,transform .8s}
.assistindo .topo,body:not(.pronto) .topo{opacity:0;transform:translateY(-100%);pointer-events:none}
.marca{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:800;font-stretch:125%;text-transform:uppercase;letter-spacing:.02em;font-size:17px}
.marca svg{width:32px;height:32px}
.topo nav{display:none;gap:4px}
.topo nav a{padding:8px 12px;border-radius:999px;text-decoration:none;font-size:14px;color:var(--nevoa)}
.topo nav a:hover{color:var(--gelo);background:rgb(232 251 255/.08)}
@media (min-width:900px){.topo nav{display:flex}}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 22px;border-radius:999px;border:1px solid rgb(232 251 255/.35);text-decoration:none;font-weight:600;font-size:15px;background:transparent;color:var(--gelo)}
.btn:hover{background:rgb(232 251 255/.1)}
.btn-claro{background:var(--gelo);color:var(--noite);border-color:var(--gelo)}
.btn-claro:hover{background:#fff}

/* cenas: altura de sobra para o cérebro respirar; o texto fica preso enquanto a cena passa */
main{position:relative;z-index:1}
.cena{position:relative;min-height:170vh}
.cena.alta{min-height:190vh}
.quadro{position:sticky;top:0;height:100vh;display:flex;align-items:center;padding:96px clamp(20px,6vw,96px) 48px}
.quadro.baixo{align-items:flex-end;padding-bottom:12vh}
.bloco{max-width:680px;min-width:0;display:grid;gap:20px;opacity:0;transform:translateY(24px);transition:opacity .9s ease,transform .9s ease}
.cena.ativa .bloco{opacity:1;transform:none}
.bloco.centro{margin-inline:auto;text-align:center;justify-items:center;max-width:840px}
h2{hyphens:manual;-webkit-hyphens:manual;font-weight:800;font-stretch:125%;text-transform:uppercase;letter-spacing:-.01em;line-height:.95;font-size:clamp(34px,4.4vw,64px);text-wrap:balance} /* sem hífen (Flávio, 04/10): a fonte é limitada para a palavra mais longa caber inteira */
.bloco p{font-size:clamp(18px,1.6vw,22px);color:var(--gelo);max-width:46ch}
.bloco .mudo{color:var(--nevoa);font-size:clamp(16px,1.3vw,18px)}
.lista{display:grid;gap:10px}
.lista li{padding-left:18px;position:relative;color:var(--nevoa)}
.lista li::before{content:"";position:absolute;left:0;top:.6em;width:7px;height:7px;border-radius:50%;background:var(--ciano)}
.lista b{color:var(--gelo);font-weight:600}
.selo{display:inline-block;padding:2px 10px;margin-right:6px;border:1px solid var(--ambar);color:var(--ambar);border-radius:999px;font-size:13px;font-weight:600}
.frase{font-size:clamp(22px,2.4vw,32px);line-height:1.25;max-width:26ch;color:var(--gelo);text-wrap:balance}
.retrato{width:120px;height:120px;border-radius:50%;object-fit:cover;object-position:50% 20%;border:2px solid rgb(232 251 255/.25)}

/* abertura */
.abertura .quadro{justify-content:center}
.convite{position:absolute;inset:0;display:grid;place-content:center;justify-items:center;gap:14px;text-align:center;transition:opacity .6s}
.convite p{color:var(--nevoa);font-size:14px}
.aviso{display:none;max-width:34ch}
.reduzido .aviso{display:block}
.assistindo .convite,.pronto .convite{opacity:0;pointer-events:none}
.play{display:flex;align-items:center;gap:14px;padding:14px 28px 14px 16px;border-radius:999px;border:1px solid rgb(232 251 255/.4);background:rgb(3 5 10/.5);color:var(--gelo);font:600 18px var(--titulo);cursor:pointer;backdrop-filter:blur(6px)}
.play svg{width:44px;height:44px;padding:10px;border-radius:50%;background:var(--gelo);fill:var(--noite)}
.play:hover{border-color:var(--gelo)}
.link{background:none;border:0;color:var(--nevoa);font:500 15px var(--titulo);text-decoration:underline;text-underline-offset:.25em;cursor:pointer;padding:8px}
.abertura .bloco{position:absolute;left:0;right:0;bottom:11vh;padding-inline:20px}
body:not(.pronto) .abertura .bloco{opacity:0;transform:translateY(24px)}
.chamada{font-size:clamp(22px,2.6vw,36px)!important;font-weight:600;max-width:none!important}
.sub{color:var(--nevoa)!important}
.rolar{margin-top:18px;font-size:12px;letter-spacing:.2em;color:var(--nevoa);animation:respira 2.4s ease-in-out infinite}
@keyframes respira{50%{opacity:.3;transform:translateY(4px)}}

/* durante a tempestade de atividade, um véu de cobalto na borda */
body::after{content:"";position:fixed;inset:0;pointer-events:none;z-index:0;box-shadow:inset 0 0 220px rgb(36 51 200/.0);transition:box-shadow 1.2s}
body.tempestade::after{box-shadow:inset 0 0 260px rgb(36 51 200/.55)}

/* portão de entrada (pedido do Flávio, 04/10): o clique em "Entrar" é o gesto que o navegador exige para tocar som */
.portao{position:fixed;inset:0;z-index:8;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;gap:28px;padding:24px 20px calc(9vh + env(safe-area-inset-bottom));text-align:center;
  background:radial-gradient(ellipse at 50% 42%,rgb(3 5 10/0) 0,rgb(3 5 10/.35) 45%,rgb(3 5 10/.85) 100%);transition:opacity .9s}
.portao-frase{margin:0;max-width:26ch;font-size:clamp(22px,2.6vw,34px);font-weight:600;line-height:1.25;text-wrap:balance}
.portao-entrar{display:flex;align-items:center;gap:12px;min-height:56px;padding:14px 30px 14px 22px;border-radius:999px;border:1px solid var(--ciano);background:rgb(95 227 224/.14);color:var(--gelo);font:700 18px var(--titulo);cursor:pointer;backdrop-filter:blur(8px);
  box-shadow:0 0 24px rgb(95 227 224/.35);animation:sinapse 1.8s ease-in-out infinite}
.portao-entrar svg{width:24px;height:24px;fill:currentColor}
.portao-entrar:hover{background:rgb(95 227 224/.24)}
@keyframes sinapse{0%,100%{box-shadow:0 0 18px rgb(95 227 224/.28),0 0 0 0 rgb(95 227 224/.45)}12%{box-shadow:0 0 38px rgb(95 227 224/.7),0 0 0 6px rgb(95 227 224/.18)}40%{box-shadow:0 0 22px rgb(95 227 224/.35),0 0 0 16px rgb(95 227 224/0)}}
.portao-rodape{color:var(--nevoa);font-size:14px;text-underline-offset:.25em}
.portao-rodape:hover{color:var(--gelo)}
.portao.saindo{opacity:0;pointer-events:none}
body.no-portao .controles,body.no-portao .topo{opacity:0;pointer-events:none}
body.no-portao{overflow:hidden}

/* som e pausa */
.controles{position:fixed;right:clamp(14px,2vw,28px);bottom:clamp(14px,2vw,28px);z-index:6;display:flex;gap:8px}
.pausa{display:grid;place-items:center;width:42px;height:42px;padding:0;border-radius:50%;border:1px solid rgb(232 251 255/.25);background:rgb(3 5 10/.6);color:var(--gelo);cursor:pointer;backdrop-filter:blur(8px)}
.pausa span{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.pausa svg{width:18px;height:18px;fill:currentColor}
.pausa .i-play,.pausa[aria-pressed="true"] .i-pausa{display:none}
.pausa[aria-pressed="true"] .i-play{display:block}
.som.chama{border-color:var(--ciano);box-shadow:0 0 0 0 rgb(95 227 224/.5);animation:chama 2.2s ease-out infinite}
@keyframes chama{70%{box-shadow:0 0 0 12px rgb(95 227 224/0)}100%{box-shadow:0 0 0 0 rgb(95 227 224/0)}}
.som{display:flex;align-items:center;gap:8px;padding:10px 16px 10px 12px;border-radius:999px;border:1px solid rgb(232 251 255/.25);background:rgb(3 5 10/.6);color:var(--gelo);font:600 13px var(--titulo);cursor:pointer;backdrop-filter:blur(8px)}
.som svg{width:20px;height:20px;fill:currentColor}
.som[aria-pressed="false"] .ondas{opacity:.25}
.som[aria-pressed="true"] .ondas{animation:respira 1.6s ease-in-out infinite}

.rodape{position:relative;z-index:1;display:grid;gap:10px;padding:48px clamp(20px,6vw,96px) 96px;color:var(--nevoa);font-size:13px;border-top:1px solid rgb(232 251 255/.1);background:var(--noite)}
.rodape p{max-width:80ch}

/* celular: o cérebro fica no alto, o texto embaixo, sobre um véu escuro */
@media (max-width:759px){
  .quadro{align-items:flex-end;padding:80px 20px 9vh}
  .bloco:not(.centro){background:linear-gradient(to bottom,rgb(3 5 10/0),rgb(3 5 10/.85) 18%);padding-top:28px;max-width:none}
  h2{font-size:clamp(22px,calc((100vw - 40px) / 12.6),40px)} /* "TRANSFORMANDO" (a mais longa) cabe na largura útil */
  .bloco{width:100%}
  .frase{font-size:22px}
  .abertura .bloco{bottom:14vh}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .bloco,.convite,.topo{transition:none}
  .rolar,.som .ondas,.som.chama,.portao-entrar{animation:none!important}
}