/* =========================================================
   Sartóri Esquadrias — Design System
   Paleta verde-sálvia pastel + areia quente + champagne
   ========================================================= */

:root{
  /* Cores */
  --bg:        #F7F5F1;   /* off-white quente (fundo base)   */
  --bg-alt:    #EEE9E1;   /* areia suave (seções alternadas) */
  --surface:   #FFFFFF;
  --green:     #6E8F73;   /* sálvia — cor de marca dessaturada */
  --green-deep:#37463B;   /* verde profundo (rodapé/realces)  */
  --green-soft:#A9C0A6;   /* sálvia clara (bordas/sutilezas)  */
  --gold:      #BFA06A;   /* champagne (detalhes finos)       */
  --gold-soft: #D8C6A2;
  --ink:       #2B2B28;   /* texto principal (quase preto)    */
  --muted:     #6C6C64;   /* texto secundário                 */
  --line:      rgba(35,40,36,.10);
  --line-soft: rgba(35,40,36,.06);

  /* Tipografia */
  --serif: "Playfair Display", Georgia, "Times New Roman", serif;
  --sans:  "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  /* Métrica */
  --container: 1200px;
  --radius:   14px;
  --radius-sm: 8px;
  --shadow:   0 18px 50px -24px rgba(35,40,36,.30);
  --shadow-sm:0 8px 24px -16px rgba(35,40,36,.35);
  --ease:     cubic-bezier(.22,.61,.36,1);
}

/* ----------------------- Reset ------------------------ */
*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body{
  margin:0;
  font-family:var(--sans);
  font-weight:400;
  font-size:clamp(15px,.6vw + 13px,17px);
  line-height:1.7;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
button{ font-family:inherit; cursor:pointer; }
ul{ margin:0; padding:0; list-style:none; }

h1,h2,h3,h4{
  font-family:var(--serif);
  font-weight:500;
  line-height:1.15;
  color:var(--ink);
  margin:0;
  letter-spacing:.01em;
}

/* ----------------------- Utilidades ------------------- */
.container{ width:100%; max-width:var(--container); margin-inline:auto; padding-inline:clamp(20px,5vw,48px); }
.section{ padding-block:clamp(64px,9vw,120px); }
.section--alt{ background:var(--bg-alt); }
.section--tight{ padding-block:clamp(48px,6vw,80px); }

.eyebrow{
  display:inline-flex; align-items:center; gap:.6em;
  font-family:var(--sans);
  font-size:.78rem; font-weight:600; letter-spacing:.22em; text-transform:uppercase;
  color:var(--green);
  margin-bottom:1.1rem;
}
.eyebrow::before{ content:""; width:34px; height:1px; background:var(--gold); }

.title{ font-size:clamp(1.9rem,3.6vw,3rem); }
.title--lg{ font-size:clamp(2.3rem,5vw,3.8rem); }
.lead{ color:var(--muted); font-size:1.06rem; max-width:60ch; }

.center{ text-align:center; }
.center .eyebrow::before{ display:none; }
.center .eyebrow{ gap:0; }

/* ----------------------- Botões ----------------------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:.6em;
  padding:.95em 1.9em;
  font-family:var(--sans); font-size:.92rem; font-weight:600; letter-spacing:.02em;
  border:1px solid transparent; border-radius:999px;
  transition:transform .35s var(--ease), background .35s var(--ease), color .35s var(--ease), border-color .35s var(--ease);
  will-change:transform;
}
.btn:hover{ transform:translateY(-2px); }
.btn--primary{ background:var(--green); color:#fff; }
.btn--primary:hover{ background:var(--green-deep); }
.btn--ghost{ background:transparent; color:var(--ink); border-color:var(--line); }
.btn--ghost:hover{ border-color:var(--green); color:var(--green); }
.btn--light{ background:#fff; color:var(--green-deep); }
.btn--outline-light{ background:transparent; color:#fff; border-color:rgba(255,255,255,.4); }
.btn--outline-light:hover{ background:#fff; color:var(--green-deep); border-color:#fff; }

/* ======================= HEADER ======================= */
.header{
  position:fixed; inset:0 0 auto 0; z-index:100;
  transition:background .4s var(--ease), box-shadow .4s var(--ease), padding .4s var(--ease);
  padding-block:18px;
}
.header__inner{ display:flex; align-items:center; justify-content:space-between; gap:24px; }
.brand{ display:flex; align-items:center; gap:12px; z-index:2; }
.brand img{ height:46px; width:auto; transition:height .4s var(--ease); }
.brand__name{ font-family:var(--serif); font-size:1.15rem; color:#fff; line-height:1.1; transition:color .4s var(--ease); }
.brand__name small{ display:block; font-family:var(--sans); font-size:.62rem; letter-spacing:.28em; text-transform:uppercase; color:var(--gold-soft); }

.nav{ display:flex; align-items:center; gap:6px; }
.nav a{
  position:relative; padding:.5em .9em; font-size:.92rem; font-weight:500;
  color:#fff; transition:color .3s var(--ease);
}
.nav a::after{
  content:""; position:absolute; left:.9em; right:.9em; bottom:.25em; height:1px;
  background:var(--gold); transform:scaleX(0); transform-origin:left; transition:transform .35s var(--ease);
}
.nav a:hover::after, .nav a.is-active::after{ transform:scaleX(1); }

/* dropdown */
.has-sub{ position:relative; }
.submenu{
  position:absolute; top:100%; left:0; min-width:230px;
  background:var(--surface); border:1px solid var(--line); border-radius:var(--radius-sm);
  box-shadow:var(--shadow); padding:8px;
  opacity:0; visibility:hidden; transform:translateY(8px);
  transition:opacity .3s var(--ease), transform .3s var(--ease), visibility .3s;
}
.has-sub:hover .submenu, .has-sub:focus-within .submenu{ opacity:1; visibility:visible; transform:translateY(4px); }
.submenu a{ display:block; color:var(--ink); padding:.6em .9em; border-radius:6px; font-size:.9rem; }
.submenu a::after{ display:none; }
.submenu a:hover{ background:var(--bg-alt); color:var(--green); }

/* estado "scrolled" — fundo sólido claro */
.header.is-scrolled{ background:rgba(247,245,241,.92); backdrop-filter:blur(10px); box-shadow:0 1px 0 var(--line); padding-block:12px; }
.header.is-scrolled .brand__name{ color:var(--ink); }
.header.is-scrolled .brand img{ height:40px; }
.header.is-scrolled .nav a{ color:var(--ink); }

/* páginas internas (sem hero escuro) começam já com header claro */
.header.header--solid{ background:rgba(247,245,241,.95); backdrop-filter:blur(10px); box-shadow:0 1px 0 var(--line); }
.header--solid .brand__name{ color:var(--ink); }
.header--solid .nav a{ color:var(--ink); }

/* hambúrguer */
.nav-toggle{ display:none; flex-direction:column; gap:5px; width:42px; height:42px; align-items:center; justify-content:center; background:none; border:none; z-index:2; }
.nav-toggle span{ width:24px; height:2px; background:#fff; transition:transform .3s var(--ease), opacity .3s var(--ease), background .3s; }
.header.is-scrolled .nav-toggle span, .header--solid .nav-toggle span{ background:var(--ink); }

/* ======================= HERO ========================= */
.hero{
  position:relative; min-height:100svh; display:flex; align-items:center;
  color:#fff; overflow:hidden;
}
.hero__bg{ position:absolute; inset:0; z-index:-2; }
.hero__bg img{ width:100%; height:100%; object-fit:cover; object-position:center; }
.hero::after{
  content:""; position:absolute; inset:0; z-index:-1;
  background:linear-gradient(105deg, rgba(28,36,30,.82) 0%, rgba(28,36,30,.55) 45%, rgba(28,36,30,.25) 100%);
}
.hero__content{ max-width:680px; padding-block:140px 80px; }
.hero .eyebrow{ color:var(--gold-soft); }
.hero h1{ color:#fff; font-size:clamp(2.4rem,5.6vw,4.2rem); font-weight:500; margin-bottom:1.1rem; }
.hero p{ font-size:clamp(1.05rem,1.4vw,1.25rem); color:rgba(255,255,255,.86); max-width:54ch; margin-bottom:2.2rem; }
.hero__actions{ display:flex; flex-wrap:wrap; gap:14px; }
.hero__scroll{ position:absolute; left:50%; bottom:30px; transform:translateX(-50%); color:rgba(255,255,255,.7); font-size:.72rem; letter-spacing:.2em; text-transform:uppercase; display:flex; flex-direction:column; align-items:center; gap:8px; }
.hero__scroll span{ width:1px; height:40px; background:linear-gradient(rgba(255,255,255,.6),transparent); animation:scrollLine 2.2s var(--ease) infinite; }
@keyframes scrollLine{ 0%{transform:scaleY(0);transform-origin:top} 40%{transform:scaleY(1);transform-origin:top} 60%{transform:scaleY(1);transform-origin:bottom} 100%{transform:scaleY(0);transform-origin:bottom} }

/* ======================= SOBRE ======================== */
.about{ display:grid; grid-template-columns:1.05fr .95fr; gap:clamp(32px,5vw,72px); align-items:center; }
.about__media{ position:relative; }
.about__media img{ width:100%; aspect-ratio:4/5; object-fit:cover; border-radius:var(--radius); box-shadow:var(--shadow); }
.about__media::before{ content:""; position:absolute; inset:18px -18px -18px 18px; border:1px solid var(--green-soft); border-radius:var(--radius); z-index:-1; }
.about__seal{ position:absolute; right:-22px; bottom:-22px; width:96px; height:96px; background:#fff; border-radius:50%; box-shadow:var(--shadow-sm); display:grid; place-items:center; padding:14px; }
.about p + p{ margin-top:1rem; }
.about .lead{ margin-bottom:1.6rem; }

/* mini-estatísticas */
.stats{ display:flex; flex-wrap:wrap; gap:clamp(24px,4vw,48px); margin-top:2rem; }
.stat b{ font-family:var(--serif); font-size:2.2rem; color:var(--green); display:block; line-height:1; }
.stat span{ font-size:.86rem; color:var(--muted); }

/* =================== DIFERENCIAIS ===================== */
.pillars{ display:grid; grid-template-columns:repeat(3,1fr); gap:clamp(20px,3vw,34px); margin-top:clamp(36px,5vw,56px); }
.pillar{
  background:var(--surface); border:1px solid var(--line-soft); border-radius:var(--radius);
  padding:clamp(26px,3vw,38px); transition:transform .4s var(--ease), box-shadow .4s var(--ease);
}
.pillar:hover{ transform:translateY(-6px); box-shadow:var(--shadow); }
.pillar__icon{ width:54px; height:54px; border-radius:50%; background:var(--bg-alt); display:grid; place-items:center; margin-bottom:1.2rem; color:var(--green); }
.pillar__icon svg{ width:26px; height:26px; }
.pillar h3{ font-size:1.35rem; margin-bottom:.6rem; }
.pillar p{ color:var(--muted); font-size:.97rem; margin:0; }

/* ==================== PORTFÓLIO ======================= */
.folio{ display:grid; grid-template-columns:repeat(3,1fr); gap:clamp(16px,2vw,26px); margin-top:clamp(36px,5vw,56px); }
.folio__card{
  position:relative; display:block; border-radius:var(--radius); overflow:hidden;
  aspect-ratio:4/5; box-shadow:var(--shadow-sm);
}
.folio__card img{ width:100%; height:100%; object-fit:cover; transition:transform .8s var(--ease); }
.folio__card::after{ content:""; position:absolute; inset:0; background:linear-gradient(to top, rgba(28,36,30,.78) 0%, rgba(28,36,30,.15) 45%, transparent 70%); transition:opacity .4s var(--ease); }
.folio__card:hover img{ transform:scale(1.06); }
.folio__meta{ position:absolute; left:0; right:0; bottom:0; padding:26px; z-index:2; color:#fff; }
.folio__meta h3{ color:#fff; font-size:1.5rem; }
.folio__meta span{ display:inline-flex; align-items:center; gap:.5em; font-size:.82rem; font-weight:500; letter-spacing:.04em; color:var(--gold-soft); margin-top:.4rem; opacity:0; transform:translateY(8px); transition:opacity .4s var(--ease), transform .4s var(--ease); }
.folio__card:hover .folio__meta span{ opacity:1; transform:translateY(0); }

/* card grande (destaque) */
.folio__card--wide{ grid-column:span 2; aspect-ratio:auto; }
@media(max-width:760px){ .folio__card--wide{ grid-column:span 1; } }

/* ======================= CTA ========================== */
.cta{ position:relative; color:#fff; overflow:hidden; }
.cta__bg{ position:absolute; inset:0; z-index:-2; }
.cta__bg img{ width:100%; height:100%; object-fit:cover; }
.cta::after{ content:""; position:absolute; inset:0; z-index:-1; background:linear-gradient(100deg, rgba(55,70,59,.94), rgba(55,70,59,.74)); }
.cta__inner{ max-width:640px; padding-block:clamp(60px,8vw,96px); }
.cta h2{ color:#fff; font-size:clamp(1.9rem,3.6vw,2.9rem); margin-bottom:1rem; }
.cta p{ color:rgba(255,255,255,.85); margin-bottom:1.9rem; }
.cta .eyebrow{ color:var(--gold-soft); }

/* ====================== BREADCRUMB ==================== */
.page-head{ position:relative; padding-top:clamp(120px,16vh,180px); padding-bottom:clamp(48px,7vw,84px); color:#fff; overflow:hidden; }
.page-head__bg{ position:absolute; inset:0; z-index:-2; }
.page-head__bg img{ width:100%; height:100%; object-fit:cover; }
.page-head::after{ content:""; position:absolute; inset:0; z-index:-1; background:linear-gradient(100deg, rgba(37,46,40,.92), rgba(37,46,40,.7)); }
.crumb{ font-size:.84rem; color:rgba(255,255,255,.7); margin-bottom:.8rem; display:flex; gap:.5em; flex-wrap:wrap; }
.crumb a:hover{ color:#fff; }
.crumb span{ color:var(--gold-soft); }
.page-head h1{ color:#fff; font-size:clamp(2.1rem,4.6vw,3.4rem); }
.page-head p{ color:rgba(255,255,255,.85); max-width:60ch; margin-top:.8rem; }

/* =================== CONTEÚDO RICO ==================== */
.prose{ max-width:760px; }
.prose p{ color:var(--muted); margin:0 0 1.1rem; }
.prose p strong{ color:var(--ink); }
.feature-list{ display:grid; grid-template-columns:repeat(2,1fr); gap:14px 26px; margin:1.8rem 0; }
.feature-list li{ display:flex; gap:.7em; align-items:flex-start; font-weight:500; }
.feature-list svg{ flex:none; width:22px; height:22px; color:var(--green); margin-top:2px; }
@media(max-width:560px){ .feature-list{ grid-template-columns:1fr; } }

/* split conteúdo + imagem */
.split{ display:grid; grid-template-columns:1fr 1fr; gap:clamp(32px,5vw,64px); align-items:center; }
.split__media img{ width:100%; aspect-ratio:4/3; object-fit:cover; border-radius:var(--radius); box-shadow:var(--shadow-sm); }

/* cartão de mapa (contato) */
.map-card{ border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow-sm); background:var(--surface); }
.map-card iframe{ width:100%; aspect-ratio:4/3; border:0; display:block; }
.map-card__cta{ display:flex; align-items:center; gap:14px; padding:16px 20px; background:var(--green-deep); color:#fff; transition:background .35s var(--ease); }
.map-card__cta:hover{ background:#2c3a30; }
.map-card__cta > svg{ width:26px; height:26px; flex:none; color:var(--gold-soft); }
.map-card__cta > span:not(.map-card__arrow){ display:flex; flex-direction:column; line-height:1.35; font-size:.92rem; color:rgba(255,255,255,.92); }
.map-card__cta strong{ font-weight:600; font-size:.72rem; letter-spacing:.16em; text-transform:uppercase; color:var(--gold-soft); margin-bottom:3px; }
.map-card__arrow{ margin-left:auto; font-size:1.3rem; opacity:.85; transition:transform .35s var(--ease); }
.map-card__cta:hover .map-card__arrow{ transform:translateX(5px); }

/* =================== GALERIA ========================= */
.gallery{ display:grid; grid-template-columns:repeat(3,1fr); gap:clamp(12px,1.6vw,20px); }
@media(max-width:860px){ .gallery{ grid-template-columns:repeat(2,1fr); } }
@media(max-width:480px){ .gallery{ grid-template-columns:1fr; } }
.gallery__item{
  position:relative; border:none; padding:0; margin:0; background:none;
  aspect-ratio:1/1; border-radius:var(--radius-sm); overflow:hidden; box-shadow:var(--shadow-sm);
  cursor:zoom-in;
}
.gallery__item img{ width:100%; height:100%; object-fit:cover; transition:transform .7s var(--ease); }
.gallery__item::after{ content:""; position:absolute; inset:0; background:rgba(37,46,40,0); transition:background .4s var(--ease); }
.gallery__item:hover img{ transform:scale(1.07); }
.gallery__item:hover::after{ background:rgba(37,46,40,.18); }
.gallery__item .zoom{ position:absolute; top:50%; left:50%; transform:translate(-50%,-50%) scale(.8); width:48px; height:48px; border-radius:50%; background:rgba(255,255,255,.92); display:grid; place-items:center; color:var(--green-deep); opacity:0; transition:opacity .4s var(--ease), transform .4s var(--ease); }
.gallery__item:hover .zoom{ opacity:1; transform:translate(-50%,-50%) scale(1); }
.gallery__item .zoom svg{ width:22px; height:22px; }

.gallery-empty{ border:1px dashed var(--green-soft); border-radius:var(--radius); padding:clamp(32px,5vw,56px); text-align:center; color:var(--muted); background:var(--surface); }
.gallery-empty svg{ width:40px; height:40px; color:var(--green-soft); margin-bottom:1rem; }

/* ==================== LIGHTBOX ======================= */
.lightbox{
  position:fixed; inset:0; z-index:200; display:flex; align-items:center; justify-content:center;
  background:rgba(20,26,22,.92); backdrop-filter:blur(6px);
  opacity:0; visibility:hidden; transition:opacity .35s var(--ease), visibility .35s;
  padding:24px;
}
.lightbox.is-open{ opacity:1; visibility:visible; }
.lightbox img{ max-width:92vw; max-height:86vh; object-fit:contain; border-radius:8px; box-shadow:0 30px 80px -20px rgba(0,0,0,.6); transform:scale(.96); transition:transform .35s var(--ease); }
.lightbox.is-open img{ transform:scale(1); }
.lightbox__btn{ position:absolute; background:rgba(255,255,255,.12); border:1px solid rgba(255,255,255,.2); color:#fff; width:52px; height:52px; border-radius:50%; display:grid; place-items:center; transition:background .3s var(--ease); }
.lightbox__btn:hover{ background:rgba(255,255,255,.25); }
.lightbox__btn svg{ width:24px; height:24px; }
.lightbox__close{ top:24px; right:24px; }
.lightbox__prev{ left:24px; top:50%; transform:translateY(-50%); }
.lightbox__next{ right:24px; top:50%; transform:translateY(-50%); }
.lightbox__count{ position:absolute; bottom:24px; left:50%; transform:translateX(-50%); color:rgba(255,255,255,.7); font-size:.85rem; letter-spacing:.05em; }
@media(max-width:600px){ .lightbox__prev{ left:12px; } .lightbox__next{ right:12px; } .lightbox__btn{ width:44px; height:44px; } }

/* ======================= FOOTER ====================== */
.footer{ background:var(--green-deep); color:rgba(255,255,255,.78); padding-top:clamp(56px,7vw,84px); }
.footer a{ transition:color .3s var(--ease); }
.footer a:hover{ color:#fff; }
.footer__grid{ display:grid; grid-template-columns:1.4fr 1fr 1.3fr; gap:clamp(32px,5vw,64px); padding-bottom:clamp(40px,5vw,60px); }
.footer__brand img{ height:54px; filter:brightness(0) invert(1); opacity:.95; margin-bottom:1.2rem; }
.footer__brand p{ font-size:.94rem; max-width:36ch; }
.footer h4{ color:#fff; font-family:var(--sans); font-size:.82rem; font-weight:600; letter-spacing:.18em; text-transform:uppercase; margin-bottom:1.2rem; }
.footer__col li{ margin-bottom:.7rem; font-size:.95rem; }
.footer__contact li{ display:flex; gap:.7em; align-items:flex-start; margin-bottom:1rem; font-size:.95rem; }
.footer__contact svg{ flex:none; width:18px; height:18px; color:var(--green-soft); margin-top:3px; }
.socials{ display:flex; gap:12px; margin-top:1.4rem; }
.socials a{ width:40px; height:40px; border-radius:50%; border:1px solid rgba(255,255,255,.2); display:grid; place-items:center; }
.socials a:hover{ background:rgba(255,255,255,.12); border-color:transparent; }
.socials svg{ width:18px; height:18px; }
.footer__bottom{ border-top:1px solid rgba(255,255,255,.12); padding-block:24px; display:flex; flex-wrap:wrap; gap:12px 24px; justify-content:space-between; align-items:center; font-size:.82rem; color:rgba(255,255,255,.55); }
.footer__bottom a{ color:rgba(255,255,255,.7); }

/* SEO discreto (palavras-chave) */
.seo-tags{ border-top:1px solid rgba(255,255,255,.1); padding-block:22px 30px; }
.seo-tags details{ font-size:.8rem; color:rgba(255,255,255,.4); }
.seo-tags summary{ cursor:pointer; letter-spacing:.05em; }
.seo-tags__list{ margin-top:14px; line-height:2; }
.seo-tags__list a{ color:rgba(255,255,255,.45); }
.seo-tags__list a:not(:last-child)::after{ content:" ·"; color:rgba(255,255,255,.25); }

/* ================= WHATSAPP FLUTUANTE ================= */
.wa-float{
  position:fixed; right:22px; bottom:22px; z-index:90;
  width:58px; height:58px; border-radius:50%; background:#25D366;
  display:grid; place-items:center; box-shadow:0 12px 30px -8px rgba(37,211,102,.6);
  transition:transform .35s var(--ease);
}
.wa-float:hover{ transform:scale(1.08) translateY(-2px); }
.wa-float svg{ width:30px; height:30px; color:#fff; }
.wa-float::after{ content:""; position:absolute; inset:0; border-radius:50%; border:2px solid #25D366; animation:pulse 2.4s ease-out infinite; }
@keyframes pulse{ 0%{transform:scale(1);opacity:.6} 100%{transform:scale(1.7);opacity:0} }

/* ================= REVEAL (scroll) =================== */
.reveal{ opacity:0; transform:translateY(26px); transition:opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.is-in{ opacity:1; transform:none; }

/* ==================== RESPONSIVO ===================== */
@media(max-width:980px){
  .about{ grid-template-columns:1fr; }
  .about__media{ max-width:460px; margin-inline:auto; }
  .pillars{ grid-template-columns:1fr; max-width:480px; margin-inline:auto; }
  .folio{ grid-template-columns:repeat(2,1fr); }
  .footer__grid{ grid-template-columns:1fr 1fr; }
  .footer__brand{ grid-column:1 / -1; }
  .split{ grid-template-columns:1fr; }
}
@media(max-width:760px){
  .nav-toggle{ display:flex; }
  .nav{
    position:fixed; inset:0 0 0 auto; width:min(82vw,340px); background:var(--surface);
    flex-direction:column; align-items:stretch; justify-content:flex-start; gap:2px;
    padding:96px 22px 32px; box-shadow:-20px 0 60px -30px rgba(0,0,0,.4);
    transform:translateX(100%); transition:transform .4s var(--ease); z-index:1;
  }
  .nav.is-open{ transform:translateX(0); }
  .nav a{ color:var(--ink); padding:.85em .6em; border-bottom:1px solid var(--line-soft); }
  .nav a::after{ display:none; }
  .submenu{ position:static; opacity:1; visibility:visible; transform:none; box-shadow:none; border:none; padding:0 0 0 14px; background:none; }
  .submenu a{ padding:.6em; font-size:.88rem; color:var(--muted); }
  .has-sub > a::after{ content:none; }
  body.nav-open{ overflow:hidden; }
  .nav-backdrop{ position:fixed; inset:0; background:rgba(20,26,22,.4); opacity:0; visibility:hidden; transition:opacity .4s; z-index:99; }
  .nav-backdrop.is-open{ opacity:1; visibility:visible; }
  .folio{ grid-template-columns:1fr; }
  .footer__grid{ grid-template-columns:1fr; }
  .footer__bottom{ justify-content:center; text-align:center; }
}

/* hambúrguer animado */
.nav-toggle.is-open span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2){ opacity:0; }
.nav-toggle.is-open span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }

/* respeita preferências de movimento reduzido */
@media(prefers-reduced-motion:reduce){
  *{ animation:none !important; transition-duration:.01ms !important; }
  html{ scroll-behavior:auto; }
  .reveal{ opacity:1; transform:none; }
}