/* ROOT */
:root{
  --galeria-ratio:21/9; /* proporção da galeria: maior 1º número = galeria mais baixa (ex: 3/1, 21/9, 16/9) */
  --galeria-ratio-mobile:4/3;
  --primary:#111827;--secondary:#4b5563;--accent:#3b82f6;
  --bg-light:#f3f4f6;--border-color:#ececec;
  --text-main:#111827;--text-muted:#6b7280;
  --pad-x:clamp(20px,5vw,60px);
  --pad-y:clamp(56px,9vw,100px);
  --radius:clamp(20px,3vw,32px);
}
/* GLOBAL */
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:80px}
body{font-family:'Segoe UI',system-ui,-apple-system,sans-serif;background:var(--bg-light);color:var(--text-main);line-height:1.6;overflow-x:hidden}
img,video,iframe{max-width:100%}
a:focus-visible,button:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.site-container{max-width:1400px;margin:clamp(0px,3vw,40px) auto;background:#fff;border-radius:clamp(0px,3vw,40px);overflow:hidden;box-shadow:0 20px 60px rgba(0,0,0,.05);border:1px solid var(--border-color)}
/* HEADER */
header{position:sticky;top:0;z-index:999;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:20px var(--pad-x);background:rgba(255,255,255,.92);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid var(--border-color)}
.logo{font-size:clamp(17px,4.5vw,24px);font-weight:800;letter-spacing:-.5px;background:linear-gradient(45deg,#111827,#4b5563);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;white-space:nowrap}
nav{display:flex;gap:28px}
nav a{text-decoration:none;color:var(--secondary);font-weight:700;font-size:15px;transition:.3s;padding:6px 0}
nav a:hover{color:var(--primary)}
.menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--border-color);background:#fff;border-radius:12px;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.menu-toggle span{display:block;width:20px;height:2px;background:var(--primary);transition:.3s}
.menu-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle.open span:nth-child(2){opacity:0}
.menu-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
/* HERO */
.hero{padding:clamp(60px,12vw,120px) var(--pad-x);text-align:center;background:radial-gradient(circle at top,#fff,#f9fafb)}
.hero h1{font-size:clamp(34px,8vw,68px);font-weight:900;line-height:1.05;letter-spacing:-2px;margin-bottom:24px;overflow-wrap:anywhere}
.hero p{max-width:720px;margin:auto;color:var(--text-muted);font-size:clamp(16px,2.2vw,20px)}
/* SEÇÕES */
.secao{padding:var(--pad-y) var(--pad-x)}
.secao-header{margin-bottom:clamp(28px,5vw,50px)}
.secao h2{font-size:clamp(32px,6vw,52px);font-weight:900;letter-spacing:-2px;line-height:1.1}
/* LIVRO */
.acervo-container{display:grid;grid-template-columns:1fr 1fr;gap:40px;background:#0f172a;border-radius:var(--radius);padding:clamp(16px,3vw,40px);color:#fff}
.visual-box{display:flex;flex-direction:column;gap:20px;min-width:0}
.media-container{position:relative;height:clamp(300px,45vw,450px);border-radius:24px;overflow:hidden;background:#000;border:1px solid rgba(255,255,255,.1)}
#book3d{width:100%;height:100%;touch-action:pan-y}
#book3d canvas{display:block;width:100%;height:100%}
.pdf-frame{width:100%;height:100%;border:none}
.label-badge{position:absolute;top:16px;left:16px;z-index:10;background:rgba(255,255,255,.1);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:8px 16px;border-radius:999px;font-size:12px;font-weight:700;letter-spacing:1px;text-transform:uppercase;pointer-events:none}
.acervo-info{display:flex;flex-direction:column;justify-content:center;padding:20px}
.acervo-info h3{font-size:clamp(30px,5vw,44px);line-height:1.1;margin-bottom:24px}
.acervo-info p{color:#94a3b8;font-size:clamp(16px,2vw,18px);margin-bottom:32px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;text-decoration:none;background:#fff;color:#0f172a;padding:16px 28px;min-height:48px;border-radius:14px;font-weight:700;transition:.3s;align-self:flex-start}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 20px rgba(255,255,255,.1)}
/* DOCUMENTÁRIO */
.video-section{padding-top:20px}
.documentario-header{text-align:center;max-width:950px;margin:0 auto clamp(28px,5vw,50px)}
.documentario-texto{margin-top:22px;font-size:clamp(17px,2.4vw,22px);line-height:1.8;color:#4b5563;font-weight:500}
.destaque-video{width:100%;max-width:1100px;margin:auto;border-radius:clamp(16px,3vw,28px);overflow:hidden;background:#000;box-shadow:0 20px 60px rgba(0,0,0,.15)}
.youtube-frame{width:100%;aspect-ratio:16/9;height:auto;border:none;display:block}
/* PANORAMA */
.panorama-nav{display:flex;gap:12px;margin-bottom:20px;flex-wrap:wrap}
.panorama-btn{background:#fff;padding:14px 24px;min-height:48px;border-radius:14px;font-weight:700;cursor:pointer;transition:.3s;border:1px solid var(--border-color);color:var(--secondary);font-size:15px}
.panorama-btn.active{background:var(--primary);color:#fff}
#panorama{width:100%;height:clamp(460px,85vh,980px);height:clamp(460px,85dvh,980px);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border-color);box-shadow:0 10px 30px rgba(0,0,0,.05);margin-top:20px}
/* GALERIA */
.galeria-section{background:#fafafa}
.carrossel-container{display:flex;flex-direction:column;gap:14px}
.carrossel-wrapper{position:relative;overflow:hidden;border-radius:clamp(14px,2.5vw,24px);background:#fff;border:1px solid var(--border-color);box-shadow:0 10px 30px rgba(0,0,0,.04);touch-action:pan-y}
.carrossel{display:flex;transition:transform .5s cubic-bezier(.23,1,.32,1);width:100%}
.obra-card{min-width:100%;display:flex;align-items:center;justify-content:center;aspect-ratio:var(--galeria-ratio);max-height:70vh;background:#0f172a;overflow:hidden}
.obra-img{width:100%;height:100%;object-fit:contain;cursor:zoom-in;display:block;-webkit-user-drag:none;user-select:none}
.carrossel-controles{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 4px}
.btn-nav{width:48px;height:48px;border:2px solid var(--accent);background:transparent;color:var(--accent);border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.3rem;transition:.3s;flex-shrink:0}
.btn-nav:hover{background:var(--accent);color:#fff;transform:scale(1.1)}
.indicadores{display:flex;gap:8px;justify-content:center;flex:1;flex-wrap:wrap}
.indicador{width:10px;height:10px;border-radius:50%;background:#d1d5db;cursor:pointer;transition:.3s;position:relative}
.indicador::after{content:"";position:absolute;inset:-10px}
.indicador.ativo{background:var(--accent);width:28px;border-radius:5px}
.contador{font-size:14px;color:var(--text-muted);min-width:50px;text-align:right}
/* AMPLIAR / LIGHTBOX */
.btn-ampliar{background:var(--accent);color:#fff;border-color:var(--accent);margin-left:auto}
.btn-ampliar-foto{border:2px solid var(--accent);background:transparent;color:var(--accent);border-radius:999px;padding:0 18px;height:48px;font-weight:700;cursor:pointer;flex-shrink:0}
.btn-ampliar-foto:hover{background:var(--accent);color:#fff}
.lightbox{position:fixed;inset:0;z-index:2000;background:rgba(2,6,23,.96);display:flex;align-items:center;justify-content:center;padding:56px 12px 40px}
.lightbox[hidden]{display:none}
#lbImg{max-width:100%;max-height:100%;object-fit:contain;border-radius:8px;touch-action:pinch-zoom}
.lb-btn{position:absolute;width:48px;height:48px;border-radius:50%;border:1px solid rgba(255,255,255,.3);background:rgba(255,255,255,.12);color:#fff;font-size:20px;cursor:pointer;z-index:2}
.lb-close{top:max(12px,env(safe-area-inset-top));right:12px}
.lb-prev{left:12px;top:50%;transform:translateY(-50%)}
.lb-next{right:12px;top:50%;transform:translateY(-50%)}
.lb-count{position:absolute;bottom:max(12px,env(safe-area-inset-bottom));left:0;right:0;text-align:center;color:#cbd5e1;font-size:14px}
body.lb-open{overflow:hidden}
@media(max-width:700px){.btn-ampliar{margin-left:0;grid-column:1/-1}.btn-ampliar-foto{order:2}.lb-prev,.lb-next{top:auto;bottom:12px;transform:none}}
/* FOOTER */
.footer{background:linear-gradient(135deg,#0f172a,#1e293b);color:#fff;padding:clamp(56px,8vw,100px) var(--pad-x) 40px}
.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:clamp(32px,5vw,60px);margin-bottom:60px}
.footer-section h3{font-size:12px;text-transform:uppercase;letter-spacing:3px;color:#94a3b8;margin-bottom:16px}
.footer-section p,.footer-section li{color:#e2e8f0;font-size:15px;line-height:1.7}
.footer-section ul{list-style:none}
.footer-section li{margin-bottom:10px}
.video-creditos-player{width:100%;max-width:900px;margin:auto;border-radius:clamp(14px,2.5vw,24px);overflow:hidden;background:#000;border:1px solid rgba(255,255,255,.08);box-shadow:0 20px 50px rgba(0,0,0,.35)}
.video-creditos-player video{width:100%;display:block}
.footer-bottom{margin-top:50px;padding-top:30px;border-top:1px solid rgba(255,255,255,.08);text-align:center;color:#94a3b8;font-size:14px}
/* TABLET */
@media(max-width:1100px){
  .acervo-container{grid-template-columns:1fr;gap:24px}
  .acervo-info{padding:8px}
}
/* MOBILE */
@media(max-width:800px){
  header{padding:14px var(--pad-x)}
  .menu-toggle{display:flex}
  nav{position:absolute;top:100%;left:0;right:0;flex-direction:column;gap:0;background:rgba(255,255,255,.98);border-bottom:1px solid var(--border-color);max-height:0;overflow:hidden;visibility:hidden;transition:max-height .3s ease,visibility .3s}
  nav.open{max-height:300px;visibility:visible}
  nav a{padding:16px var(--pad-x);font-size:17px;border-top:1px solid var(--border-color)}
}
@media(max-width:700px){
  .site-container{border:none}
  .hero h1{letter-spacing:-1px}
  .secao h2{letter-spacing:-1px}
  .media-container{border-radius:16px}
  .pdf-frame{display:none} /* celulares nao exibem PDF em iframe: use o botao */
  .media-container:has(.pdf-frame){display:none}
  .btn{width:100%}
  .panorama-nav{display:grid;grid-template-columns:1fr 1fr}
  #panorama{height:clamp(320px,60vh,500px);height:clamp(320px,60dvh,500px);margin-top:12px}
  .carrossel-controles{flex-wrap:wrap}
  .indicadores{order:3;flex-basis:100%}
  .contador{order:2;flex:1;text-align:center}
  .obra-card{aspect-ratio:var(--galeria-ratio-mobile)}
  .footer-content{grid-template-columns:1fr 1fr}
}
@media(max-width:420px){
  .footer-content{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition-duration:.01ms!important}
}