/* ============================================================
   Ber.Sic — Arquitetura e Interiores
   Paleta e tipografia derivadas do material real do estúdio:
   gesso quente, verde-sálvia da identidade, terracota dos renders.
   ============================================================ */

/* ---------- 1. Tokens ---------- */
:root {
  /* Paleta amostrada pixel a pixel do manual da marca (Ber.Sic - Logotipo.pdf,
     página 1): #F4F4F4 · #E8E2E2 · #AC8177 · #83593B · #4A6560 */
  --bone:    #F4F4F4;   /* base */
  --bone-2:  #E8E2E2;   /* faixa alternada, rosé pálido */
  --paper:   #FFFFFF;   /* superfície de card */
  --sage:    #4A6560;   /* verde da identidade */
  --rose:    #AC8177;   /* acento — só em tipo grande (3,1:1) */
  --brown:   #83593B;   /* acento pequeno, numerais, links (5,6:1) */

  /* No manual o texto é escrito em sálvia, não em preto. --ink é o sálvia
     aprofundado, para o corpo ter folga de leitura (10,8:1). */
  --ink:     #2F3B37;
  --ink-2:   #4A5551;
  --muted:   #5F6E69;   /* 4,9:1 sobre a base */

  --sage-d:  #3A504B;
  --sage-l:  #7B918B;
  --clay:    var(--brown);   /* compat: acentos pequenos usam o marrom */
  --clay-l:  #C0967F;
  --sand:    #D8C3B0;   /* clareado: numerais grandes sobre o sálvia */

  --line:      color-mix(in srgb, var(--ink) 14%, transparent);
  --line-soft: color-mix(in srgb, var(--ink) 8%,  transparent);
  --line-dark: color-mix(in srgb, #fff 16%, transparent);

  /* A identidade usa TAN Mon Cheri (títulos), Glacial Indifference (subtítulos)
     e Cardo (textos). As duas primeiras não são livres para web, então:
     Cormorant Garamond ocupa o lugar da display de alto contraste, e
     League Spartan — que É uma das fontes do manual — assume as caixas altas
     espaçadas. O logotipo em si usa a arte original, não uma imitação. */
  --serif: "Cormorant Garamond", "Iowan Old Style", Georgia, serif;
  /* Só para os sobrenomes do estúdio: entre as livres, Italiana é a que mais
     se aproxima da TAN Mon Cheri do logotipo — leve, larga, geométrica e de
     serifa mínima. Tem um peso só e nenhum itálico, por isso não serve como
     display do site inteiro. */
  --serif-marca: "Italiana", "Cormorant Garamond", Georgia, serif;
  --caps:  "League Spartan", "Jost", ui-sans-serif, system-ui, sans-serif;
  --sans:  "Jost", ui-sans-serif, system-ui, "Segoe UI", sans-serif;

  --nav-h: 78px;
  --pad:   clamp(1.25rem, 4.4vw, 5.5rem);
  --maxw:  1440px;

  --e-out:  cubic-bezier(.16, 1, .3, 1);
  --e-soft: cubic-bezier(.33, 1, .68, 1);

  --shadow-lift: 0 2px 4px rgba(38,32,25,.04), 0 18px 40px -18px rgba(38,32,25,.22), 0 48px 90px -50px rgba(38,32,25,.4);
}

@media (max-width: 860px) { :root { --nav-h: 64px; } }

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 24px);
  /* `clip` (e não `hidden`) para nunca criar um contêiner de rolagem
     que quebraria o `position: sticky` dos cards. */
  overflow-x: clip;
}

body {
  margin: 0;
  background: var(--bone);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 300;
  font-size: clamp(1rem, .93rem + .28vw, 1.125rem);
  line-height: 1.62;
  letter-spacing: .004em;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { margin: 0; font-weight: 300; }
p { margin: 0; }
ul, ol, dl { margin: 0; padding: 0; list-style: none; }

::selection { background: var(--clay); color: var(--bone); }

:focus-visible {
  outline: 2px solid var(--clay);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip {
  position: fixed; top: 8px; left: 8px; z-index: 999;
  padding: .7rem 1.1rem; background: var(--ink); color: var(--bone);
  font-size: .8rem; letter-spacing: .06em; text-transform: uppercase;
  transform: translateY(-160%); transition: transform .3s var(--e-out);
}
.skip:focus-visible { transform: none; }

/* Recorte controlado das imagens (posts do IG têm texto gravado nas bordas).
   Todas as transformações são compostas por variáveis para que recorte,
   zoom de hover e reação ao cursor nunca se sobrescrevam. */
/* <picture> nao deve gerar caixa: as imagens usam height:100% do figure */
picture { display: contents; }

figure img, .tile img {
  --tx: 0px; --ty: 0px; --mx: 0px; --my: 0px; --hz: 1;
  width: 100%; height: 100%; object-fit: cover;
  transform-origin: center;
  transform:
    scale(calc(var(--z, 1) * var(--hz)))
    translate(calc(var(--tx) + var(--mx)), calc(var(--ty) + var(--my)));
}

/* ---------- 2. Tipografia utilitária ---------- */
.h2 {
  font-family: var(--serif);
  font-size: clamp(2.1rem, 1.1rem + 3.5vw, 4.4rem);
  line-height: .98;
  letter-spacing: -.018em;
  max-width: 16ch;
}
.h2 em, .card__title em, .cta__h em, .hero__h1 em, .lede em {
  font-style: italic;
  color: var(--clay);
}
.h2--light { color: var(--bone); }
.h2--light em { color: var(--sand); }

.label {
  font-family: var(--caps);
  display: flex; align-items: center; gap: .8rem;
  font-size: .7rem; font-weight: 400;
  letter-spacing: .22em; text-transform: uppercase;
  color: var(--muted);
}
.label i { width: 34px; height: 1px; background: currentColor; opacity: .5; flex: none; }
.label--light { color: color-mix(in srgb, var(--bone) 90%, transparent); }

.lede {
  font-size: clamp(1.12rem, 1rem + .5vw, 1.42rem);
  line-height: 1.5;
  letter-spacing: -.006em;
  color: var(--ink);
}

/* ---------- 3. Botões ---------- */
.btn {
  font-family: var(--caps);
  --bg: var(--ink); --fg: var(--bone);
  position: relative; display: inline-flex; align-items: center; justify-content: center;
  gap: .6rem; padding: 1.02rem 1.9rem;
  font-size: .78rem; font-weight: 400;
  letter-spacing: .14em; text-transform: uppercase;
  border: 1px solid transparent; border-radius: 999px;
  isolation: isolate; overflow: hidden; cursor: pointer;
  will-change: transform;
  transition: color .45s var(--e-soft), border-color .45s var(--e-soft), background-color .45s var(--e-soft);
}
.btn > span { position: relative; z-index: 2; }
.btn::before {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background: var(--clay);
  transform: translateY(101%);
  transition: transform .58s var(--e-out);
}
.btn:hover::before, .btn:focus-visible::before { transform: none; }

.btn--solid { background: var(--ink); color: var(--bone); }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn--ghost:hover { color: var(--bone); border-color: transparent; }
.btn--onDark { background: var(--bone); color: var(--ink); }
.btn--onDark:hover { color: var(--bone); }
.btn--pill { background: transparent; color: var(--ink); border-color: var(--line); padding: .78rem 1.35rem; }
.btn--pill:hover { color: var(--bone); border-color: transparent; }
.btn--big { padding: 1.3rem 2.6rem; font-size: .84rem; }

/* Troca de rótulo em clip (nav e links) */
.swap {
  position: relative; display: inline-grid; overflow: hidden;
  line-height: 1.35; padding-block: .1em;
}
.swap > span { grid-area: 1 / 1; transition: transform .55s var(--e-out); }
.swap > span:last-child { transform: translateY(105%); color: var(--clay); }
.swap:hover > span:first-child { transform: translateY(-105%); }
.swap:hover > span:last-child { transform: none; }

/* ---------- 4. Preloader ---------- */
.loader {
  position: fixed; inset: 0; z-index: 200;
  background: var(--bone);
  display: grid; place-items: center;
  transition: transform 1s var(--e-out), visibility 1s;
}
.loader.is-done { transform: translateY(-101%); visibility: hidden; }
.loader__inner { display: grid; justify-items: center; gap: 1.1rem; padding: var(--pad); }
.loader__mark {
  font-family: var(--serif); font-weight: 300;
  font-size: clamp(2.6rem, 8vw, 5rem); letter-spacing: .04em; line-height: 1;
}
.loader__mark i { font-style: normal; color: var(--clay); }
.loader__rule { display: block; width: min(46vw, 320px); height: 1px; background: var(--line); }
.loader__rule i { display: block; height: 100%; width: 0; background: var(--ink); transition: width .12s linear; }
.loader__count {
  font-family: var(--caps); display: flex; align-items: baseline; gap: 1rem; font-size: .7rem; letter-spacing: .22em; text-transform: uppercase; color: var(--muted); }
.loader__count b { font-weight: 400; font-variant-numeric: tabular-nums; color: var(--ink); }
.loader__count em { font-style: normal; }

/* ---------- 5. Imagem que acompanha o ponteiro ---------- */
.peek {
  position: fixed; top: 0; left: 0; z-index: 60;
  width: clamp(200px, 20vw, 300px); aspect-ratio: 4 / 5;
  margin: -1px 0 0 -1px; pointer-events: none;
  opacity: 0; transform-origin: center;
  transition: opacity .4s var(--e-out);
  overflow: hidden; border-radius: 2px;
  box-shadow: var(--shadow-lift);
  will-change: transform;
}
.peek.is-on { opacity: 1; }
.peek img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- 6. Nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: color-mix(in srgb, var(--bone) 0%, transparent);
  /* `color` entra na transição junto do fundo: se a cor do texto virasse
     na hora e o fundo levasse meio segundo, haveria claro-sobre-claro na
     travessia entre uma seção e outra. Curta, para encurtar essa janela. */
  transition: background-color .28s var(--e-soft), color .28s var(--e-soft),
              border-color .28s var(--e-soft), backdrop-filter .28s;
  border-bottom: 1px solid transparent;
}
.nav.is-stuck {
  background: color-mix(in srgb, var(--bone) 82%, transparent);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  border-bottom-color: var(--line-soft);
}
.nav.on-dark { color: var(--bone); }
.nav.on-dark.is-stuck {
  background: color-mix(in srgb, var(--sage-d) 78%, transparent);
  border-bottom-color: var(--line-dark);
}
.nav.on-dark .nav__sub { color: color-mix(in srgb, var(--bone) 62%, transparent); }
.nav.on-dark .btn--pill { color: var(--bone); border-color: var(--line-dark); }
.nav.on-dark .burger i { background: var(--bone); }

.nav__bar {
  max-width: var(--maxw); margin: 0 auto;
  height: var(--nav-h); padding-inline: var(--pad);
  display: flex; align-items: center; gap: clamp(1rem, 3vw, 3rem);
}
.nav__brand { display: grid; gap: 1px; margin-right: auto; }
.nav__mark {
  font-family: var(--serif); font-weight: 300;
  font-size: 1.65rem; line-height: 1; letter-spacing: .045em;
}
.nav__mark i { font-style: normal; color: var(--clay); }
.nav__sub { font-size: .53rem; letter-spacing: .3em; text-transform: uppercase; color: var(--muted); }

.nav__links { display: flex; gap: clamp(1.2rem, 2.4vw, 2.4rem); }
.nav__links a {
  font-family: var(--caps); font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; }

.nav__progress {
  position: absolute; left: 0; bottom: -1px; height: 1px;
  width: 100%; transform: scaleX(0); transform-origin: 0 50%;
  background: var(--clay);
}

.burger { display: none; width: 40px; height: 40px; padding: 0; border: 0; background: none; cursor: pointer; position: relative; }
.burger i { position: absolute; left: 9px; width: 22px; height: 1px; background: var(--ink); transition: transform .4s var(--e-out), opacity .3s; }
.burger i:first-child { top: 17px; } .burger i:last-child { top: 23px; }
.burger[aria-expanded="true"] i:first-child { transform: translateY(3px) rotate(45deg); }
.burger[aria-expanded="true"] i:last-child { transform: translateY(-3px) rotate(-45deg); }

.drawer {
  position: fixed; inset: var(--nav-h) 0 auto 0; z-index: 99;
  background: var(--bone); border-bottom: 1px solid var(--line);
  padding: 1rem var(--pad) 2rem;
  display: grid; gap: .2rem;
  animation: drawerIn .45s var(--e-out) both;
}
.drawer[hidden] { display: none; }
.drawer a { font-family: var(--serif); font-size: 1.9rem; padding: .35rem 0; border-bottom: 1px solid var(--line-soft); }
.drawer__cta { font-family: var(--sans) !important; font-size: .82rem !important; letter-spacing: .14em; text-transform: uppercase; margin-top: 1rem; color: var(--clay); border: 0 !important; }
@keyframes drawerIn { from { opacity: 0; transform: translateY(-12px); } }

@media (max-width: 1000px) {
  .nav__links { display: none; }
  #navCta { display: none; }
  .burger { display: block; }
}

/* ---------- 7. Hero — 4 planos ---------- */
.hero {
  position: relative;
  height: 100svh; min-height: 660px;
  overflow: clip;
  isolation: isolate;
}
.hero__plane {
  position: absolute; inset: 0; will-change: transform;
  transform: translate3d(var(--mxp, 0px), calc(var(--py, 0px) + var(--myp, 0px)), 0);
}
.hero__plane--4 { pointer-events: none; }
.hero__plane--4 .hero__type { pointer-events: auto; }

/* plano 1 */
.hero__wash {
  /* inset generoso de propósito: com -10% a borda da caixa entrava na tela
     durante o parallax e o gradiente, ainda com cor, terminava numa reta. */
  position: absolute; inset: -45%;
  background:
    radial-gradient(58% 50% at 50% 12%, color-mix(in srgb, var(--sand) 34%, transparent), transparent 70%),
    radial-gradient(70% 60% at 12% 88%, color-mix(in srgb, var(--sage) 16%, transparent), transparent 72%),
    radial-gradient(60% 55% at 92% 72%, color-mix(in srgb, var(--clay) 14%, transparent), transparent 70%);
}
.hero__grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, var(--line-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-soft) 1px, transparent 1px);
  background-size: clamp(60px, 8vw, 110px) clamp(60px, 8vw, 110px);
  /* mesma razão do portal: parada dura cria uma borda perceptível na malha */
  -webkit-mask-image: var(--grid-fade);
          mask-image: var(--grid-fade);
  --grid-fade: radial-gradient(58% 48% at 50% 50%,
    rgba(0,0,0,1) 0%, rgba(0,0,0,.97) 20%, rgba(0,0,0,.88) 31%,
    rgba(0,0,0,.74) 40%, rgba(0,0,0,.57) 49%, rgba(0,0,0,.40) 57%,
    rgba(0,0,0,.25) 64%, rgba(0,0,0,.13) 70%, rgba(0,0,0,.05) 75%,
    rgba(0,0,0,.01) 79%, rgba(0,0,0,0) 83%);
}
.hero__ghost {
  position: absolute; left: 50%; top: 47%;
  transform: translate(-50%, -50%);
  font-family: var(--serif); font-weight: 300;
  font-size: min(23vw, 21rem); line-height: 1; letter-spacing: .01em;
  white-space: nowrap;
  color: transparent;
  -webkit-text-stroke: 1px color-mix(in srgb, var(--ink) 9%, transparent);
}

/* plano 2 — portal em arco (motivo da própria identidade) */
.hero__plane--2 { display: grid; place-items: start center; }
.portal {
  position: relative; margin: 0;
  margin-top: clamp(8vh, 11vh, 13vh);
  width: min(38vw, 480px); aspect-ratio: 4 / 3.2;
  border-radius: 999px 999px 4px 4px;
  overflow: hidden;
  box-shadow: 0 40px 80px -46px rgba(38,32,25,.45);
  /* Dissolve para o gesso antes de a tipografia da frente começar.
     A curva é suavizada em muitos passos de propósito: um gradiente com
     parada dura ("#000 34%, transparent 94%") mantém opacidade constante e
     depois começa a cair de repente — essa quebra na taxa de variação vira
     uma banda de Mach, uma linha reta visível atravessando a imagem. */
  -webkit-mask-image: var(--portal-fade);
          mask-image: var(--portal-fade);
  --portal-fade: linear-gradient(to bottom,
    rgba(0,0,0,1)    0%,
    rgba(0,0,0,.998) 12%,
    rgba(0,0,0,.99)  22%,
    rgba(0,0,0,.97)  31%,
    rgba(0,0,0,.93)  39%,
    rgba(0,0,0,.87)  46%,
    rgba(0,0,0,.78)  53%,
    rgba(0,0,0,.67)  59%,
    rgba(0,0,0,.55)  65%,
    rgba(0,0,0,.43)  71%,
    rgba(0,0,0,.31)  76%,
    rgba(0,0,0,.21)  81%,
    rgba(0,0,0,.13)  86%,
    rgba(0,0,0,.07)  90%,
    rgba(0,0,0,.03)  94%,
    rgba(0,0,0,.008) 97%,
    rgba(0,0,0,0)    100%);
}
.portal img { filter: saturate(1.04) contrast(1.03); transition: transform .6s var(--e-out); }
.portal__frame {
  position: absolute; inset: 0; z-index: 2; pointer-events: none;
  border: 1px solid color-mix(in srgb, var(--bone) 30%, transparent);
  border-radius: inherit;
}

/* plano 3 — satélites */
.sat {
  position: absolute; margin: 0; overflow: hidden;
  border-radius: 3px;
  transform: translate3d(var(--mxp, 0px), var(--myp, 0px), 0) rotate(var(--tiltR, 0deg));
  transition: transform .5s var(--e-out);
  box-shadow: var(--shadow-lift);
  outline: 1px solid color-mix(in srgb, var(--bone) 40%, transparent);
  outline-offset: -1px;
  will-change: transform;
}
.sat--l { left: clamp(.5rem, 4vw, 5rem); top: 46%; width: clamp(120px, 15vw, 208px); aspect-ratio: 4 / 5; }
.sat--r { right: clamp(.5rem, 4vw, 5rem); top: 22%; width: clamp(110px, 13vw, 184px); aspect-ratio: 4 / 5; }

/* plano 4 — tipografia */
.hero__plane--4 { display: grid; align-items: end; }
.hero__type {
  position: relative;
  width: 100%; max-width: var(--maxw);
  margin: 0 auto; padding: 0 var(--pad) clamp(4.5rem, 11vh, 7.5rem);
  display: grid; justify-items: center; gap: clamp(1rem, 2.2vh, 1.6rem);
  text-align: center;
}
/* Sem halo atrás da tipografia. Ele existia como seguro de contraste, mas
   para não terminar numa linha reta precisava de uma caixa tão larga que
   passava a lavar os satélites. Hoje quem garante a leitura é a própria
   curva do portal, que chega perto de zero antes de o texto começar. */

.eyebrow {
  font-family: var(--caps);
  display: flex; align-items: center; gap: .85rem; flex-wrap: wrap; justify-content: center;
  font-size: .68rem; letter-spacing: .24em; text-transform: uppercase; color: var(--ink);
}
.eyebrow i { width: 26px; height: 1px; background: var(--clay); flex: none; }

.hero__h1 {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(2.9rem, 1rem + 8.4vw, 8rem);
  line-height: .9;
  letter-spacing: -.028em;
  text-wrap: balance;
}
.hero__h1 .line { display: block; overflow: hidden; padding-bottom: .08em; }
.hero__h1 .w {
  display: inline-block; will-change: transform;
  transform: translateY(118%);
  transition: transform 1.05s var(--e-out) var(--d, 0s);
}
.hero__h1.is-in .w { transform: none; }

.hero__lede { max-width: 46ch; color: var(--ink-2); font-size: clamp(.98rem, .9rem + .4vw, 1.16rem); }
.hero__lede b { font-weight: 400; color: var(--ink); }
.hero__acts { display: flex; gap: .7rem; flex-wrap: wrap; justify-content: center; margin-top: .4rem; }

.hero__cue {
  font-family: var(--caps);
  position: absolute; left: 50%; bottom: 1.4rem; transform: translateX(-50%);
  display: grid; justify-items: center; gap: .5rem;
  font-size: .6rem; letter-spacing: .26em; text-transform: uppercase; color: var(--muted);
}
.hero__cue i { width: 1px; height: 34px; background: linear-gradient(var(--muted), transparent); animation: cue 2.4s var(--e-soft) infinite; transform-origin: top; }
@keyframes cue { 0%, 100% { transform: scaleY(.4); opacity: .4; } 50% { transform: scaleY(1); opacity: 1; } }

@media (max-width: 900px) {
  .hero { height: auto; min-height: 0; padding-top: calc(var(--nav-h) + 1rem); }
  .hero__plane { position: relative; inset: auto; }
  .hero__plane--1 { position: absolute; inset: 0; }
  .hero__plane--2 { display: block; }
  .portal { margin: 0 auto; width: min(72vw, 360px); aspect-ratio: 4 / 4.2; }
  .hero__plane--3 { position: absolute; inset: 0; }
  .sat--l { left: 2vw; top: 34%; width: 26vw; max-width: 130px; }
  .sat--r { right: 2vw; top: 12%; width: 22vw; max-width: 112px; }
  .hero__type { padding-bottom: clamp(3rem, 8vh, 4rem); padding-top: 1.6rem; }
  .hero__cue {
  font-family: var(--caps); display: none; }
  .hero__ghost { font-size: 34vw; top: 26%; }
}
@media (max-width: 560px) {
  .sat--l, .sat--r { display: none; }
  .eyebrow i { display: none; }   /* evita o traço solto no fim da linha quebrada */
}

/* ---------- 8. Ticker ---------- */
.ticker {
  background: var(--sage); color: var(--bone);
  padding: .95rem 0; overflow: hidden;
  border-block: 1px solid var(--sage-d);
}
.ticker__track { display: flex; width: max-content; will-change: transform; }
.ticker__track span {
  font-family: var(--serif);
  font-size: clamp(1.1rem, 2.2vw, 1.75rem);
  letter-spacing: .02em; white-space: nowrap; padding-right: .6em;
}
.ticker__track i { font-style: normal; color: var(--sand); font-size: .7em; vertical-align: .18em; padding: 0 .35em; }

/* ---------- 9. Manifesto ---------- */
.manifesto {
  max-width: var(--maxw); margin: 0 auto;
  padding: clamp(6rem, 16vh, 12rem) var(--pad);
  display: grid; gap: clamp(2rem, 5vh, 3.5rem);
}
.reveal {
  font-family: var(--serif);
  font-size: clamp(1.65rem, .8rem + 3vw, 3.6rem);
  line-height: 1.16; letter-spacing: -.015em;
  max-width: 22ch;
}
.reveal em { font-style: italic; color: var(--clay); }
.rw {
  display: inline-block;
  opacity: calc(.14 + var(--o, 0) * .86);
  filter: blur(calc((1 - var(--o, 0)) * 4px));
  transform: translateY(calc((1 - var(--o, 0)) * .12em));
  will-change: opacity, filter, transform;
}

/* ---------- 10. Projetos / card stacking ---------- */
.work { padding: 0 var(--pad) clamp(4rem, 10vh, 8rem); max-width: var(--maxw); margin: 0 auto; }
.work__head { display: grid; gap: 1.4rem; padding-bottom: clamp(2.5rem, 6vh, 4.5rem); }

.stack { --stick: calc(var(--nav-h) + clamp(1rem, 3.5vh, 2.6rem)); padding-bottom: 10vh; }
/* O indice do card vem daqui, e nao de style="--i:N" no HTML: sem atributos
   de estilo embutidos, o CSP pode dispensar 'unsafe-inline' em style-src. */
.stack .card:nth-child(1) { --i: 0; }
.stack .card:nth-child(2) { --i: 1; }
.stack .card:nth-child(3) { --i: 2; }
.stack .card:nth-child(4) { --i: 3; }
.stack .card:nth-child(5) { --i: 4; }

.card {
  position: sticky;
  top: calc(var(--stick) + var(--i) * 16px);
  height: clamp(430px, 68svh, 620px);
  margin-bottom: clamp(6rem, 16vh, 12rem);
  display: grid; grid-template-columns: 1.15fr .85fr;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: 4px; overflow: hidden;
  box-shadow: var(--shadow-lift);
  transform-origin: 50% 0;
  will-change: transform;
  /* ligado ao scroll: sem transição, senão o empilhamento fica atrasado
     em relação ao dedo/roda. A reação ao cursor vive na imagem interna. */
  transform: translate3d(0, var(--stackY, 0px), 0) scale(var(--stackS, 1));
}
.card:last-child { margin-bottom: 0; }
/* véu que escurece o card conforme o próximo se empilha por cima */
.card::after {
  content: ""; position: absolute; inset: 0; z-index: 6; pointer-events: none;
  background: var(--bone); opacity: var(--cover, 0);
}

.card__media { position: relative; margin: 0; overflow: hidden; background: var(--bone-2); }
.card__media img {
  filter: saturate(1.03) contrast(1.02);
  transition: transform .7s var(--e-out);
}
.card:hover .card__media img { --hz: 1.045; }

.card__body {
  position: relative;
  --rail-top: clamp(1.3rem, 2.6vw, 2.2rem);
  padding: clamp(1.6rem, 3.2vw, 3rem);
  /* abre espaço para o trilho, que é posicionado de forma absoluta no topo */
  padding-top: calc(var(--rail-top) + 3rem);
  display: grid; align-content: center; gap: clamp(.8rem, 1.6vh, 1.15rem);
  border-left: 1px solid var(--line-soft);
}
.card__num {
  font-family: var(--caps);
  font-size: .7rem; letter-spacing: .24em; color: var(--clay);
  font-variant-numeric: tabular-nums;
}
.card__title {
  font-family: var(--serif);
  font-size: clamp(1.7rem, 1rem + 1.9vw, 2.9rem);
  line-height: 1.02; letter-spacing: -.02em;
}
.card__text { color: var(--ink-2); font-size: clamp(.92rem, .87rem + .22vw, 1.04rem); max-width: 40ch; }
.card__meta { display: grid; gap: .55rem; margin-top: .5rem; border-top: 1px solid var(--line-soft); padding-top: 1.1rem; }
.card__meta li { display: flex; gap: 1rem; justify-content: space-between; align-items: baseline; font-size: .78rem; }
.card__meta b { font-weight: 400; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); font-size: .66rem; }
.card__meta span { color: var(--ink); text-align: right; }

@media (max-width: 900px) {
  .card {
    /* a mídia ocupa a folga: o card fecha certo sem sobra no rodapé */
    grid-template-columns: 1fr; grid-template-rows: minmax(0, 1fr) auto;
    height: clamp(460px, 74svh, 640px);
    margin-bottom: clamp(4rem, 10vh, 7rem);
  }
  .card__body { border-left: 0; border-top: 1px solid var(--line-soft); align-content: start; gap: .6rem; padding-bottom: 1.35rem; }
  .card__text { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
  .card__meta { gap: .4rem; padding-top: .8rem; margin-top: .2rem; }
}

/* ---------- 11. Processo ---------- */
.proc {
  background: var(--sage); color: var(--bone);
  padding: clamp(4.5rem, 12vh, 9rem) var(--pad);
  display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
  gap: clamp(2.5rem, 6vw, 7rem);
  align-items: start;
}
.proc__aside { position: sticky; top: calc(var(--nav-h) + 6vh); display: grid; gap: 1.5rem; justify-items: start; }
.proc__note { color: color-mix(in srgb, var(--bone) 88%, transparent); max-width: 34ch; font-size: 1rem; }

.proc__steps { display: grid; gap: clamp(2rem, 5vh, 3.4rem); counter-reset: s; }
.step {
  display: grid; grid-template-columns: auto 1fr; gap: 1.2rem 1.6rem;
  padding-bottom: clamp(2rem, 5vh, 3.4rem);
  border-bottom: 1px solid var(--line-dark);
}
.step:last-child { border-bottom: 0; padding-bottom: 0; }
.step__n {
  font-family: var(--caps);
  font-family: var(--serif);
  font-size: clamp(2rem, 3.4vw, 3.2rem); line-height: .9;
  color: var(--sand); font-variant-numeric: tabular-nums;
}
.step h3 {
  font-family: var(--serif);
  font-size: clamp(1.35rem, 1rem + 1.1vw, 2.1rem); line-height: 1.05; margin-bottom: .5rem;
}
.step p { color: color-mix(in srgb, var(--bone) 88%, transparent); max-width: 46ch; }
.step__img {
  grid-column: 1 / -1; margin: .4rem 0 0; overflow: hidden; border-radius: 3px;
  aspect-ratio: 16 / 9; outline: 1px solid var(--line-dark); outline-offset: -1px;
}
.step__img img { transition: transform 1.2s var(--e-out); }
.step:hover .step__img img { --hz: 1.05; }

@media (max-width: 900px) {
  .proc { grid-template-columns: 1fr; }
  .proc__aside { position: static; }
  .step { grid-template-columns: 1fr; gap: .5rem; }
  .step__n {
  font-family: var(--caps); font-size: 1.6rem; }
}

/* ---------- 12. Estúdio ---------- */
.studio { max-width: var(--maxw); margin: 0 auto; padding: clamp(5rem, 14vh, 10rem) var(--pad); display: grid; gap: clamp(2.5rem, 6vh, 4.5rem); }

.etym { display: grid; gap: 0; font-family: var(--serif); font-weight: 300; line-height: .88; }
.etym__row {
  font-family: var(--serif-marca);
  font-size: clamp(3rem, 1rem + 10vw, 9.5rem);
  letter-spacing: -.005em;
  /* A metade esmaecida ainda é texto: em 26% ficava em 1,6:1, abaixo até do
     limiar de texto grande. 58% mantém a hierarquia com o trecho destacado
     e chega a 3,3:1. */
  color: color-mix(in srgb, var(--ink) 58%, transparent);
}
.etym__row--2 { justify-self: end; text-align: right; }
.etym__row b { font-weight: 300; color: var(--ink); }

.studio__intro {
  display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, .65fr);
  gap: clamp(1.5rem, 5vw, 5rem); align-items: start;
}
.studio__intro .lede { max-width: 34ch; }

/* Fundadoras — cada uma com o texto que ela mesma escreveu */
.founders {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1.5rem, 5vw, 5rem);
  align-items: start;
}
.founder { display: grid; gap: .85rem; will-change: transform; }
.founder--lag { margin-top: clamp(1.5rem, 7vh, 5rem); }
.founder__name {
  font-family: var(--serif);
  font-size: clamp(1.4rem, 1rem + 1.3vw, 2.2rem);
  line-height: 1.02; letter-spacing: -.018em; margin-top: .5rem;
}
.founder__name em { font-style: italic; color: var(--clay); }
.founder__role {
  font-family: var(--caps);
  font-size: .66rem; letter-spacing: .2em; text-transform: uppercase; color: var(--muted);
}
.founder__bio {
  color: var(--ink-2); font-size: clamp(.94rem, .9rem + .2vw, 1.04rem);
  border-top: 1px solid var(--line-soft); padding-top: 1.1rem; margin-top: .3rem;
}

.por { margin: 0; display: grid; gap: .9rem; will-change: transform; }
.por img {
  aspect-ratio: 3 / 4; border-radius: 3px;
  filter: grayscale(1) contrast(1.06);
  transition: filter .7s var(--e-soft), transform .55s var(--e-out);
}
.por:hover img { filter: grayscale(0) contrast(1.02); }
.por figcaption { display: grid; gap: 2px; }
.por figcaption b { font-weight: 400; font-size: .92rem; }
.por figcaption span { font-size: .68rem; letter-spacing: .18em; text-transform: uppercase; color: var(--muted); }
.por--lag { margin-top: clamp(1rem, 6vh, 4rem); }

.studio__text { display: grid; gap: 1.3rem; }
.studio__text p:not(.lede) { color: var(--ink-2); }
.facts { display: grid; gap: .7rem; margin-top: .8rem; border-top: 1px solid var(--line-soft); padding-top: 1.3rem; }
.facts > div { display: flex; justify-content: space-between; gap: 1.5rem; align-items: baseline; }
.facts dt {
  font-family: var(--caps); font-size: .66rem; letter-spacing: .18em; text-transform: uppercase; color: var(--muted); }
.facts dd { margin: 0; font-size: .88rem; text-align: right; }

.studio__wide { margin: 0; overflow: hidden; border-radius: 3px; aspect-ratio: 3 / 2; }
/* o recorte ja vem enquadrado do build-assets; aqui so o hover */
.studio__wide img { transition: transform .7s var(--e-out); }
.studio__wide:hover img { --hz: 1.04; }

@media (max-width: 900px) {
  .studio__intro { grid-template-columns: 1fr; gap: 1.5rem; }
  .founders { gap: 2.5rem; }
  .founder--lag { margin-top: 0; }
  .studio__wide { aspect-ratio: 4 / 3; }
}
@media (max-width: 620px) {
  .founders { grid-template-columns: 1fr; }
}

/* ---------- 13. Serviços ---------- */
.serv { max-width: var(--maxw); margin: 0 auto; padding: clamp(3rem, 8vh, 6rem) var(--pad) clamp(5rem, 13vh, 9rem); display: grid; gap: 2.5rem; }
.serv__list { border-top: 1px solid var(--line); }
.serv__row {
  position: relative;
  display: grid; grid-template-columns: auto minmax(0, 1fr) minmax(0, 1.1fr) auto;
  align-items: center; gap: clamp(1rem, 3vw, 3rem);
  padding: clamp(1.5rem, 3.4vh, 2.4rem) 0;
  border-bottom: 1px solid var(--line);
  transition: color .5s var(--e-soft), padding-inline .6s var(--e-out);
  cursor: pointer;
}
.serv__row::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: var(--bone-2);
  transform: scaleY(0); transform-origin: 50% 100%;
  transition: transform .6s var(--e-out);
}
.serv__row:hover { padding-inline: clamp(.75rem, 2vw, 1.6rem); }
.serv__row:hover::after { transform: scaleY(1); }
.serv__n {
  font-family: var(--caps); font-size: .72rem; letter-spacing: .2em; color: var(--muted); font-variant-numeric: tabular-nums; }
.serv__row h3 {
  font-family: var(--serif);
  font-size: clamp(1.5rem, .9rem + 2.2vw, 3rem); line-height: 1; letter-spacing: -.02em;
}
.serv__row p { color: var(--ink-2); font-size: .95rem; max-width: 44ch; }
.serv__arrow { width: 26px; height: 26px; position: relative; flex: none; opacity: .35; transition: opacity .4s, transform .5s var(--e-out); }
.serv__arrow::before, .serv__arrow::after { content: ""; position: absolute; }
.serv__arrow::before { left: 1px; top: 12px; width: 23px; height: 1px; background: currentColor; }
.serv__arrow::after {
  right: 2px; top: 6.5px; width: 12px; height: 12px;
  border-top: 1px solid currentColor; border-right: 1px solid currentColor;
  transform: rotate(45deg);
}
.serv__row:hover .serv__arrow { opacity: 1; transform: translateX(6px); color: var(--clay); }

@media (max-width: 900px) {
  /* posições explícitas: sem isso a seta cai sozinha numa terceira linha */
  .serv__row { grid-template-columns: auto minmax(0, 1fr) auto; gap: .4rem 1rem; }
  .serv__n       { grid-area: 1 / 1; }
  .serv__row h3  { grid-area: 1 / 2; }
  .serv__arrow   { grid-area: 1 / 3; align-self: center; }
  .serv__row p   { grid-area: 2 / 2 / 3 / 4; }
}

/* ---------- 14. Feed ---------- */
.feed { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--pad) clamp(5rem, 13vh, 9rem); display: grid; gap: 2rem; }
.feed__head { display: flex; justify-content: space-between; align-items: end; gap: 1.5rem; flex-wrap: wrap; }
.feed__at { font-family: var(--serif); font-size: clamp(1.3rem, 2.6vw, 2.2rem); letter-spacing: -.01em; }
.feed__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(.5rem, 1.2vw, 1rem); }
.tile { overflow: hidden; border-radius: 3px; aspect-ratio: 4 / 5; background: var(--bone-2); will-change: transform; }
.tile img { transition: transform .8s var(--e-out), filter .6s; filter: saturate(.96); }
.tile:hover img { --hz: 1.06; filter: saturate(1.06); }

/* A peça deitada vale por duas: o render da suíte é 16:9 e, espremido no 4:5
   do tile, perderia 55% da largura — sobraria só a TV. Em duas colunas ela
   cabe deitada, e a altura vem da fileira (por isso o aspect-ratio acima é
   ignorado aqui, que é o que queremos). */
.tile--wide { grid-column: span 2; aspect-ratio: auto; }

/* 11 peças ocupando 12 vagas, porque a deitada conta por duas: 4×3 no desktop,
   2×6 no celular. Nos dois casos a última fileira fecha, sem peça órfã. */
@media (max-width: 900px) { .feed__grid { grid-template-columns: repeat(2, 1fr); } }

/* ---------- 15. CTA ---------- */
.cta {
  background: var(--sage-d); color: var(--bone);
  padding: clamp(6rem, 18vh, 12rem) var(--pad);
  display: grid; justify-items: center; gap: clamp(1.6rem, 4vh, 2.6rem); text-align: center;
}
.cta__h {
  font-family: var(--serif); font-weight: 300;
  font-size: clamp(2.4rem, 1rem + 6vw, 6.4rem);
  line-height: .96; letter-spacing: -.028em; max-width: 16ch;
}
.cta__h em { font-style: italic; color: var(--sand); }
.cta .rw { opacity: calc(.2 + var(--o, 0) * .8); }
.cta__note {
  font-family: var(--caps); font-size: .8rem; letter-spacing: .05em; color: color-mix(in srgb, var(--bone) 84%, transparent); }

/* ---------- 16. Rodapé ---------- */
.foot {
  background: var(--ink); color: var(--bone);
  padding: clamp(3rem, 8vh, 5rem) var(--pad) 2rem;
  display: grid; grid-template-columns: 1.6fr repeat(3, 1fr);
  gap: clamp(2rem, 4vw, 3rem);
  align-items: start;
}
.foot__mark { display: block; font-family: var(--serif); font-size: 2.2rem; line-height: 1; letter-spacing: .04em; }
.foot__mark i { font-style: normal; color: var(--clay-l); }
.foot__sub { font-size: .55rem; letter-spacing: .3em; text-transform: uppercase; color: color-mix(in srgb, var(--bone) 55%, transparent); }
.foot__col { display: grid; gap: .5rem; align-content: start; font-size: .88rem; }
.foot__col b {
  font-family: var(--caps); font-weight: 400; font-size: .64rem; letter-spacing: .2em; text-transform: uppercase; color: color-mix(in srgb, var(--bone) 52%, transparent); margin-bottom: .3rem; }
.foot__col a { color: color-mix(in srgb, var(--bone) 88%, transparent); transition: color .3s; }
.foot__col a:hover { color: var(--clay-l); }
.foot__col span { color: color-mix(in srgb, var(--bone) 70%, transparent); }
.foot__clock { font-variant-numeric: tabular-nums; font-size: 1.5rem; font-family: var(--serif); color: var(--bone) !important; }
.foot__legal {
  grid-column: 1 / -1; margin-top: clamp(2rem, 5vh, 3.5rem);
  padding-top: 1.4rem; border-top: 1px solid var(--line-dark);
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  font-size: .7rem; letter-spacing: .06em; color: color-mix(in srgb, var(--bone) 72%, transparent);
}
@media (max-width: 900px) { .foot { grid-template-columns: 1fr 1fr; } }

/* ---------- 17. Grão ---------- */
.grain {
  position: fixed; inset: -50%; z-index: 150; pointer-events: none;
  opacity: .038; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='260' height='260'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.86' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain 6s steps(6) infinite;
}
/* ?qa congela o grão para capturas frame a frame estáveis */
.qa .grain, .qa .hero__cue i { animation: none; }
@keyframes grain {
  0%   { transform: translate(0, 0); }
  20%  { transform: translate(-3%, 2%); }
  40%  { transform: translate(2%, -3%); }
  60%  { transform: translate(-2%, -2%); }
  80%  { transform: translate(3%, 1%); }
  100% { transform: translate(0, 0); }
}

/* ---------- 18. Entradas por scroll ---------- */
/* Prefixado por .js: o conteúdo só é escondido para ser revelado se o script
   estiver de pé. Sem JS, tudo aparece normalmente. */
html.js [data-in] { opacity: 0; transform: translateY(18px); }
html.js [data-in].is-in { opacity: 1; transform: none; transition: opacity .9s var(--e-soft) var(--d, 0s), transform .9s var(--e-out) var(--d, 0s); }

/* ---------- 19. Logotipo (arte original do manual, como máscara) ---------- */
.nav__mark, .loader__mark, .foot__mark {
  display: block;
  background-color: currentColor;
  -webkit-mask: url("../img/logo-bersic.png") left center / contain no-repeat;
          mask: url("../img/logo-bersic.png") left center / contain no-repeat;
}
.nav__mark    { width: clamp(118px, 12vw, 152px); aspect-ratio: 1200 / 409; }
.loader__mark { width: min(54vw, 400px);          aspect-ratio: 1200 / 409; }
.foot__mark   { width: 196px;                     aspect-ratio: 1200 / 409; }
.nav__brand   { display: block; margin-right: auto; }

/* ---------- 20. Desfoque progressivo no topo (ref.: Lanterne) ---------- */
.topfade {
  position: fixed; inset: 0 0 auto 0; z-index: 90;
  height: calc(var(--nav-h) + 7.5rem);
  pointer-events: none;
}
.topfade i { position: absolute; inset: 0; display: block; }

/* O `backdrop-filter` só amostra dentro do próprio elemento: se a máscara
   chega a zero na borda, o salto entre desfocado e nítido aparece como uma
   linha — sobretudo sobre imagem. Por isso a queda é suavizada em vários
   passos e termina bem ANTES do fim do elemento, deixando uma faixa
   inteiramente transparente como folga. */
.topfade i:nth-child(1) {
  -webkit-backdrop-filter: blur(2px); backdrop-filter: blur(2px);
  -webkit-mask-image: var(--fade-1); mask-image: var(--fade-1);
}
.topfade i:nth-child(2) {
  -webkit-backdrop-filter: blur(5px); backdrop-filter: blur(5px);
  -webkit-mask-image: var(--fade-2); mask-image: var(--fade-2);
}
.topfade i:nth-child(3) {
  -webkit-backdrop-filter: blur(11px); backdrop-filter: blur(11px);
  -webkit-mask-image: var(--fade-3); mask-image: var(--fade-3);
}
.topfade {
  --fade-1: linear-gradient(to bottom,
    #000 0%, #000 26%,
    rgba(0,0,0,.90) 40%, rgba(0,0,0,.72) 51%, rgba(0,0,0,.50) 60%,
    rgba(0,0,0,.30) 68%, rgba(0,0,0,.14) 75%, rgba(0,0,0,.05) 81%,
    rgba(0,0,0,.01) 85%, transparent 88%);
  --fade-2: linear-gradient(to bottom,
    #000 0%, #000 14%,
    rgba(0,0,0,.86) 25%, rgba(0,0,0,.64) 34%, rgba(0,0,0,.42) 42%,
    rgba(0,0,0,.24) 49%, rgba(0,0,0,.10) 55%, rgba(0,0,0,.03) 60%,
    transparent 64%);
  --fade-3: linear-gradient(to bottom,
    #000 0%, #000 6%,
    rgba(0,0,0,.80) 13%, rgba(0,0,0,.56) 19%, rgba(0,0,0,.34) 25%,
    rgba(0,0,0,.18) 30%, rgba(0,0,0,.07) 35%, rgba(0,0,0,.02) 39%,
    transparent 43%);
}

/* ---------- 21. Trilho de metadados do card (ref.: Ceragres) ---------- */
.card__rail {
  font-family: var(--caps);
  position: absolute; top: var(--rail-top);
  left: clamp(1.6rem, 3.2vw, 3rem); right: clamp(1.6rem, 3.2vw, 3rem);
  display: flex; justify-content: space-between; gap: 1rem;
  font-size: .6rem; font-weight: 400;
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--muted); white-space: nowrap;
  padding-bottom: .9rem;
  border-bottom: 1px solid var(--line-soft);
}
.card__rail span:last-child   { text-align: right; }
@media (max-width: 620px) {
  .card__rail { font-size: .55rem; letter-spacing: .12em; gap: .5rem; }
}