/* Sala 3D do Acervo: CSS 3D puro. Identidade "Expressao": monocromatica, paredes claras no tema claro e escuras no escuro. */
@media (min-width:761px){html{scrollbar-gutter:stable}}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;white-space:nowrap;margin:-1px;opacity:0}
.sala-pagina{position:relative}
.sem-js{display:none;position:fixed;inset:120px 24px auto;z-index:31;max-width:44ch}
html:not(.js) .sem-js{display:block}
html:not(.js) .sala,html:not(.js) .sala-hud{display:none}

/* ---- o palco ---- */
.sala{
  --P:1000px; --W:600px; --gap:520px; --z0:600px; --bw:168px; --bh:198px; --yc:-30px;
  --floor:310px; --ceil:-420px; --dfoco:430px; --lw:150px; --lf:7.6px; --moldura:5px; --scf:1.1;
  --L:calc(var(--z0) + (var(--n) - 1) * var(--gap) + 1100px); --SEG:calc(var(--gap) * 2);
  --H:calc(var(--floor) - var(--ceil));
  --t-chao:url(/acervo/sala/tex/chao-c.webp); --t-teto:url(/acervo/sala/tex/teto-c.webp); --t-perfil:url(/acervo/sala/tex/perfil-c.webp);
  --parede-e:#e4e2db; --parede-d:#dad8d0; --chao:#c4c1b8; --teto:#eeede8; --calha:#fffefb; --spot:.62; --rodape:#bab7ae;
  --tinta:#1e1e20; --veio:rgba(0,0,0,.09); --brilho:rgba(255,255,255,.34); --lambri:rgba(0,0,0,.055); --trilho:rgba(255,255,255,.7); --sancas:rgba(0,0,0,.10);
  position:fixed;inset:0;overflow:hidden;background:var(--bg);perspective:var(--P);perspective-origin:50% 50%;
  contain:layout paint;
}
html:not([data-tema="claro"]) .sala{
  --t-chao:url(/acervo/sala/tex/chao-e.webp); --t-teto:url(/acervo/sala/tex/teto-e.webp); --t-perfil:url(/acervo/sala/tex/perfil-e.webp);
  --parede-e:#1b1b1d; --parede-d:#161618; --chao:#0c0c0d; --teto:#0f0f10; --calha:#46464a; --spot:.34; --rodape:#09090a;
  --tinta:#f2f1ee; --veio:rgba(255,255,255,.045); --brilho:rgba(255,255,255,.07); --lambri:rgba(0,0,0,.28); --trilho:rgba(255,255,255,.12); --sancas:rgba(0,0,0,.5);
}
.mundo{position:absolute;left:50%;top:50%;width:0;height:0;transform-style:preserve-3d}
.plano{position:absolute;left:0;top:0;backface-visibility:hidden}

/* chao, teto e paredes: texturas assadas (tex/*.webp) repetidas; nada de gradiente empilhado em plano gigante */
.chao{width:var(--W);height:calc(var(--SEG) + 8px);margin:calc(var(--SEG) / -2 - 4px) 0 0 calc(var(--W) / -2);
  transform:translate3d(0,var(--floor),calc(var(--SEG) * (.5 - var(--j)))) rotateX(90deg);
  background:var(--t-chao) 0 0 / 100% calc(var(--gap) / 2) repeat-y, var(--chao)}
.teto{width:var(--W);height:calc(var(--SEG) + 8px);margin:calc(var(--SEG) / -2 - 4px) 0 0 calc(var(--W) / -2);
  transform:translate3d(0,var(--ceil),calc(var(--SEG) * (.5 - var(--j)))) rotateX(-90deg);
  background:var(--t-teto) 0 0 / 100% var(--gap) repeat-y, var(--teto)}
.parede{width:calc(var(--SEG) + 8px);height:var(--H);margin:calc(var(--H) / -2) 0 0 calc(var(--SEG) / -2 - 4px)}
.pe{transform:translate3d(calc(var(--W) / -2),calc((var(--floor) + var(--ceil)) / 2),calc(var(--SEG) * (.5 - var(--j)))) rotateY(90deg);
  background:var(--t-perfil) 0 0 / 16px 100% repeat-x, url(/acervo/sala/tex/reboco.webp) 0 0 / 256px 256px, var(--parede-e)}
.pd{transform:translate3d(calc(var(--W) / 2),calc((var(--floor) + var(--ceil)) / 2),calc(var(--SEG) * (.5 - var(--j)))) rotateY(-90deg);
  background:var(--t-perfil) 0 0 / 16px 100% repeat-x, url(/acervo/sala/tex/reboco.webp) 0 0 / 256px 256px, var(--parede-d)}
.fundo{width:var(--W);height:var(--H);margin:calc(var(--H) / -2) 0 0 calc(var(--W) / -2);
  transform:translate3d(0,calc((var(--floor) + var(--ceil)) / 2),calc(var(--L) * -1));background:var(--parede-e);
  display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:var(--tinta)}
.fundo .fd-r{font:600 8px/1 var(--sans,"Geist",system-ui,sans-serif);letter-spacing:.2em;text-transform:uppercase;opacity:.6;margin:0 0 8px}
.fundo .fd-n{font-family:var(--condensada,"Antonio",sans-serif);font-weight:200;text-transform:uppercase;font-size:84px;line-height:.9;margin:0 0 14px}
.fundo .fd-l{display:flex;gap:7px;margin:0;font-size:9px;flex-wrap:wrap;justify-content:center}
.fundo .fd-l a,.fundo .fd-l button{font:inherit;color:inherit;background:none;border:1px solid currentColor;border-radius:999px;padding:5px 11px;cursor:pointer;text-decoration:none}
.fundo .fd-l a:hover,.fundo .fd-l button:hover{background:var(--tinta);color:var(--parede-e)}
/* poca de luz no chao, sob cada obra */
.poca{position:absolute;left:0;top:0;width:190px;height:350px;margin:-175px 0 0 -95px;pointer-events:none;opacity:calc(var(--spot) * .55);
  transform:translate3d(calc(var(--sx) * (var(--W) / 2 - 100px)),calc(var(--floor) - 1px),calc(-1 * (var(--z0) + var(--i) * var(--gap)))) rotateX(90deg);
  background:url(/acervo/sala/tex/spot.webp) center / 100% 100% no-repeat}

/* ---- as obras ---- */
.obra{
  --ow:min(var(--bw), calc(var(--bh) * var(--ar))); --oh:calc(var(--ow) / var(--ar)); --sc:1;
  position:absolute;left:0;top:0;width:var(--ow);height:var(--oh);margin:calc(var(--oh) / -2) 0 0 calc(var(--ow) / -2);
  transform:translate3d(calc(var(--sx) * (var(--W) / 2 - 3px)),var(--yc),calc(-1 * (var(--z0) + var(--i) * var(--gap)))) rotateY(calc(var(--sx) * -90deg)) scale(var(--sc));
  transition:transform .9s cubic-bezier(.16,1,.3,1)}
.obra.foco{--sc:var(--scf)}
.holofote{position:absolute;left:-38.5%;width:177%;top:-66.5%;height:177%;pointer-events:none;opacity:var(--spot);
  background:url(/acervo/sala/tex/spot.webp) center / 100% 100% no-repeat}
.quadro{position:relative;display:block;width:100%;height:100%;padding:0;margin:0;border:0;cursor:pointer;background:var(--linha);color:inherit;
  outline:var(--moldura) solid var(--moldura-cor,#fbfaf6);outline-offset:0;
  box-shadow:0 0 0 calc(var(--moldura) + 1px) rgba(0,0,0,.2),0 1px 2px rgba(0,0,0,.35),4px 15px 18px -6px rgba(0,0,0,.5),0 32px 40px -18px rgba(0,0,0,.45)}
html:not([data-tema="claro"]) .quadro{--moldura-cor:#262628;box-shadow:0 0 0 calc(var(--moldura) + 1px) rgba(255,255,255,.1),0 1px 2px #000,4px 15px 18px -6px #000,0 32px 40px -18px #000}
.quadro img{display:block;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity .8s ease}
.quadro img.ok{opacity:1}
.quadro:focus-visible{outline:4px solid var(--tinta);outline-offset:6px}
.obra.foco .quadro{cursor:default}
.obra .etiqueta{transition:opacity .5s ease}
.obra.foco .etiqueta{opacity:0}
.etiqueta{position:absolute;top:50%;width:var(--lw);color:var(--tinta);font-family:var(--sans,"Geist",system-ui,sans-serif);text-align:left;pointer-events:none;
  padding:6px 8px;background:color-mix(in srgb,var(--parede-e) 80%,transparent);border:1px solid color-mix(in srgb,var(--tinta) 14%,transparent);box-shadow:0 3px 6px -4px rgba(0,0,0,.35)}
.obra.e .etiqueta{left:calc(100% + 22px)}
.obra.d .etiqueta{right:calc(100% + 22px)}
.etiqueta p{margin:0}
.et-n{font-family:var(--condensada,"Antonio",sans-serif);font-weight:200;font-size:calc(var(--lf) * 1.8);line-height:1;opacity:.5;margin-bottom:3px!important}
.et-art{font-size:calc(var(--lf) * .6);letter-spacing:.14em;text-transform:uppercase;opacity:.7;margin-bottom:3px!important}
.et-tit{font-family:var(--serifa,"Brygada 1918",serif);font-style:italic;font-size:var(--lf);line-height:1.15;margin-bottom:3px!important}
.et-meta{font-size:calc(var(--lf) * .66);opacity:.65;line-height:1.4}

/* ---- modo WebGL (quando existe): o canvas desenha a sala; a cena em CSS fica de reserva ---- */
#gl{position:absolute;inset:0;width:100%;height:100%;display:none}
.sala.modo-gl #gl{display:block}
.sala.modo-gl .mundo,.sala.modo-gl .nevoa,.sala.modo-gl .grao{display:none}
.glproxy{position:fixed;left:0;top:0;width:1px;height:1px;opacity:.01;border:0;padding:0;margin:0}
.fim-acoes{position:fixed;z-index:31;left:50%;bottom:92px;transform:translateX(-50%);display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.fim-acoes[hidden]{display:none}
.fim-acoes a,.fim-acoes button{font:500 14px/1 var(--sans,"Geist",system-ui,sans-serif);color:var(--fg);background:color-mix(in srgb,var(--bg) 86%,transparent);border:1px solid color-mix(in srgb,var(--fg) 40%,transparent);border-radius:999px;padding:12px 22px;cursor:pointer;text-decoration:none}
.fim-acoes a:hover,.fim-acoes button:hover{background:var(--fg);color:var(--bg)}
.fim-acoes a:focus-visible,.fim-acoes button:focus-visible{outline:2px solid var(--fg);outline-offset:3px}

/* ---- atmosfera: nevoa no fim do corredor, vinheta e grao ---- */
.nevoa{position:absolute;inset:0;pointer-events:none;opacity:var(--nv,1);transition:opacity .8s ease;
  background:radial-gradient(ellipse 26% 32% at 50% 50%, color-mix(in srgb, var(--bg) 92%, transparent) 0, color-mix(in srgb, var(--bg) 55%, transparent) 40%, transparent 100%)}
.sala.com-foco .nevoa{opacity:0}
.grao{position:absolute;inset:0;pointer-events:none;opacity:.075;mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .5 0 0 0 0 .5 0 0 0 0 .5 0 0 0 1 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
html:not([data-tema="claro"]) .grao{mix-blend-mode:screen;opacity:.06}
.sala::after{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(ellipse 120% 100% at 50% 50%, transparent 55%, rgba(0,0,0,.2) 100%)}

/* ---- interface sobre a sala ---- */
.sala.arrastando{cursor:grabbing}
.sala-t{position:fixed;left:clamp(20px,4vw,56px);bottom:clamp(64px,10vh,110px);z-index:30;margin:0;pointer-events:none;color:var(--fg);
  font-family:var(--condensada,"Antonio",sans-serif);font-weight:200;text-transform:uppercase;line-height:.84;transition:opacity .5s ease;--tt:clamp(76px,15vw,220px)}
.sala-t-a{display:block;font-size:var(--tt)}
.sala-t-b{display:block;font:600 12px/1 var(--sans,"Geist",system-ui,sans-serif);letter-spacing:.2em;margin-top:calc(var(--tt) * .2);color:var(--fg-3)}
.sala-nav{position:fixed;left:clamp(16px,3vw,40px);top:78px;z-index:31;display:flex;gap:8px;flex-wrap:wrap}
.sala-nav a{display:inline-flex;align-items:center;height:36px;padding:0 15px;border-radius:999px;font-size:13px;color:var(--fg);text-decoration:none;
  border:1px solid color-mix(in srgb,var(--fg) 35%,transparent);background:color-mix(in srgb,var(--bg) 86%,transparent);
  transition:background-color .35s ease,color .35s ease}
.sala-nav a:hover{background:var(--fg);color:var(--bg)}
.sala-nav a:focus-visible,.fp-b:focus-visible,.fp-lista:focus-visible,.fundo a:focus-visible,.fundo button:focus-visible{outline:2px solid var(--fg);outline-offset:3px}
.sala-hud{position:fixed;left:0;right:0;bottom:0;z-index:30;display:flex;flex-direction:column;align-items:center;gap:8px;padding:0 20px 18px;pointer-events:none;color:var(--fg)}
.hud-n{margin:0;font:500 13px/1 var(--sans,"Geist",system-ui,sans-serif);letter-spacing:.04em;text-align:center;max-width:90vw;text-wrap:balance}
.hud-barra{display:block;width:min(320px,60vw);height:2px;background:color-mix(in srgb,var(--fg) 20%,transparent)}
.hud-barra i{display:block;height:100%;width:100%;background:var(--fg);transform-origin:0 50%;transform:scaleX(0)}
.hud-dica{margin:2px 0 0;font-size:12px;color:var(--fg-3);transition:opacity .6s ease;text-align:center}
.sala-hud.sem-dica .hud-dica{opacity:0}

/* ---- aviso de entrada (no tom do convite de musica) ---- */
.sala-aviso{position:fixed;z-index:36;left:50%;top:126px;transform:translateX(-50%);width:min(440px,calc(100vw - 32px));display:flex;gap:16px;align-items:center;
  padding:14px 16px 14px 20px;border-radius:18px;background:color-mix(in srgb,var(--bg) 95%,transparent);
  border:1px solid var(--linha);color:var(--fg);box-shadow:0 10px 40px -12px rgba(0,0,0,.35);animation:av-entra .6s cubic-bezier(.16,1,.3,1) both}
.sala-aviso[hidden]{display:none}
.av-t{margin:0;flex:1;font-size:14px;line-height:1.45}
.av-m{display:none}
.av-ok{flex:none;font:500 13px/1 var(--sans,"Geist",system-ui,sans-serif);color:var(--bg);background:var(--fg);border:1px solid var(--fg);border-radius:999px;height:36px;padding:0 20px;cursor:pointer}
.av-ok:hover{opacity:.85}
.av-ok:focus-visible{outline:2px solid var(--fg);outline-offset:3px}
@keyframes av-entra{from{opacity:0;transform:translate(-50%,-10px)}to{opacity:1;transform:translate(-50%,0)}}
@media (max-width:760px),(pointer:coarse){.av-d{display:none}.av-m{display:inline}.sala-aviso{top:112px}}
@media (prefers-reduced-motion:reduce){.sala-aviso{animation:none}}

/* ---- a ficha (painel) ---- */
.fpainel{position:fixed;z-index:35;right:clamp(12px,2vw,28px);top:84px;bottom:20px;width:min(420px,36vw);display:flex;flex-direction:column;
  background:color-mix(in srgb,var(--bg) 95%,transparent);
  border:1px solid var(--linha);color:var(--fg);animation:fp-entra .6s cubic-bezier(.16,1,.3,1) both}
.fpainel[hidden]{display:none}
@keyframes fp-entra{from{opacity:0;transform:translateX(24px)}to{opacity:1;transform:none}}
.fp-barra{display:flex;gap:8px;padding:12px 14px;border-bottom:1px solid var(--linha);flex:none}
.fp-b{font:500 13px/1 var(--sans,"Geist",system-ui,sans-serif);color:var(--fg);background:none;border:1px solid color-mix(in srgb,var(--fg) 35%,transparent);border-radius:999px;height:34px;padding:0 14px;cursor:pointer;transition:background-color .3s,color .3s}
.fp-b:hover{background:var(--fg);color:var(--bg)}
.fp-x{margin-left:auto}
.fp-corpo{overflow:auto;padding:20px 22px 28px;overscroll-behavior:contain}
.fp-corpo:focus{outline:none}
.fp-t{font-family:var(--serifa,"Brygada 1918",serif);font-style:italic;font-weight:400;font-size:clamp(24px,2vw,30px);line-height:1.15;margin:0 0 6px;text-wrap:balance}
.fp-sub{margin:0 0 10px;font-size:13.5px;color:var(--fg-3)}
.fp-corpo dl{margin:14px 0 0}
.fp-corpo dl > div{display:grid;grid-template-columns:6.4em 1fr;gap:12px;padding:8px 0;border-top:1px solid var(--linha);font-size:14px;line-height:1.45}
.fp-corpo dt{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--fg-3);padding-top:2px}
.fp-corpo dd{margin:0}
.fp-corpo a{color:inherit}
.mut{color:var(--fg-3)}
.fp-nota{font-size:13.5px;line-height:1.5;color:var(--fg-3);margin:12px 0 0}
.fp-onde{margin-top:16px;padding-top:12px;border-top:1px solid var(--linha)}
.fp-r{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--fg-3)}
.fp-onde ul{list-style:none;margin:8px 0 0;padding:0;display:grid;gap:4px;font-size:14px}
.fp-lista{display:inline-block;margin-top:18px;font-size:14px;border-bottom:1px solid currentColor;padding-bottom:2px;text-decoration:none}

/* ---- celular e telas estreitas: corredor ainda mais estreito, etiqueta embaixo da obra, ficha em folha inferior ---- */
@media (max-width:760px){
  .sala{--P:430px;--W:420px;--gap:420px;--z0:420px;--bw:172px;--bh:205px;--floor:230px;--ceil:-320px;--yc:-24px;--dfoco:260px;--scf:1.06;--lw:150px;--lf:7.4px;--moldura:3px}
  .etiqueta{top:calc(100% + 10px);width:100%;min-width:120px}
  .obra.e .etiqueta{left:0}
  .obra.d .etiqueta{right:auto;left:0}
  .fundo .fd-n{font-size:56px}
  .sala-nav{top:68px}
  .sala-nav a{height:32px;padding:0 12px;font-size:12.5px}
  .fpainel{left:0;right:0;top:auto;bottom:0;width:auto;height:min(47dvh,400px);border-width:1px 0 0}
  @keyframes fp-entra{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}
  .fp-corpo{padding:16px 18px 24px}
  .hud-dica{font-size:11.5px}
}
@media (min-width:761px) and (max-width:1000px){
  .sala{--W:560px;--bw:200px;--bh:236px;--lw:160px;--lf:8px}
  .fpainel{width:min(380px,42vw)}
}
@media (prefers-reduced-motion:reduce){
  .obra{transition:none}
  .quadro img{transition:none}
  .fpainel{animation:none}
  .sala-t,.hud-dica{transition:none}
}