/* NIU Arquitetura · demonstração conceitual (DESDOBRA). Editorial, claro, com abertura escura. */
:root {
  --noite: #0d0d0c;
  --papel: #efece6;
  --papel-2: #e6e2da;
  --tinta: #121211;
  --suave: #5f5b53;
  --linha: rgb(18 18 17 / .16);
  --acento: #8c7f69;
  --fonte-titulo: "Instrument Serif", Georgia, serif;
  --fonte-texto: "Geist", system-ui, sans-serif;
  --gutter: clamp(20px, 4.5vw, 72px);
  --largura: 1360px;
  --ease: cubic-bezier(.2, .7, .1, 1);
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; overflow-x: clip; }
body { margin: 0; background: var(--papel); color: var(--tinta); font: 400 clamp(16px, 1.05vw, 18px)/1.65 var(--fonte-texto); overflow-x: clip; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--fonte-titulo); font-weight: 400; line-height: 1.02; margin: 0 0 .5em; letter-spacing: -.012em; text-wrap: balance; }
h1 { font-size: clamp(46px, 8vw, 128px); }
h2 { font-size: clamp(40px, 6vw, 96px); }
h3 { font-size: clamp(30px, 3.2vw, 52px); }
p { margin: 0 0 1em; color: var(--suave); text-wrap: pretty; }
.rotulo { display: block; font-size: 12px; letter-spacing: .3em; text-transform: uppercase; color: var(--acento); margin-bottom: 22px; }
.nota { font-size: 13px; opacity: .8; }

/* Aviso de demonstração */
.aviso-demo { position: fixed; z-index: 70; left: 0; right: 0; bottom: 0; text-align: center; font-size: 11px; letter-spacing: .14em; text-transform: uppercase; padding: 7px 12px; background: rgb(13 13 12 / .9); color: #bdb8ad; pointer-events: none; }

/* Topo: texto claro com mistura, legível sobre escuro e claro */
.topo { position: fixed; inset: 0 0 auto; z-index: 50; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 22px var(--gutter); color: #fff; mix-blend-mode: difference; }
.marca { text-decoration: none; }
.marca-texto { font-family: var(--fonte-titulo); font-size: 34px; letter-spacing: .04em; text-transform: lowercase; line-height: 1; }
.menu { display: flex; gap: 30px; align-items: center; font-size: 13px; letter-spacing: .12em; text-transform: uppercase; }
.menu a { text-decoration: none; opacity: .85; transition: opacity .3s; }
.menu a:hover { opacity: 1; }
.menu-btn { display: none; background: none; border: 0; color: inherit; font: inherit; letter-spacing: .12em; text-transform: uppercase; font-size: 13px; cursor: pointer; padding: 8px 0; }
@media (max-width: 960px) {
  .menu-btn { display: block; }
  .menu { position: fixed; inset: 0; flex-direction: column; justify-content: center; gap: 22px; background: var(--noite); font-size: 20px; opacity: 0; pointer-events: none; transition: opacity .4s; mix-blend-mode: normal; }
  .menu.aberto { opacity: 1; pointer-events: auto; }
  .topo.menu-aberto { mix-blend-mode: normal; z-index: 80; }
}

/* ── Abertura: câmera lenta sobre fotografias reais, que dissolvem no papel ── */
.abertura { position: relative; }
.hero { position: relative; height: 100vh; height: 100svh; min-height: 520px; overflow: hidden; background: #1b1a18; color: var(--papel); }
.slides { position: absolute; inset: -12% 0 0 0; will-change: transform; }
.slide { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transform-origin: 50% 60%; animation: camera 13.5s linear infinite; will-change: transform, opacity; }
.slide:nth-child(1) { animation-delay: -1.6s; object-position: 50% 60%; }
.slide:nth-child(2) { animation-delay: 2.9s; object-position: 50% 55%; }
.slide:nth-child(3) { animation-delay: 7.4s; object-position: 50% 50%; transform-origin: 40% 55%; }
@keyframes camera {
  0%   { opacity: 0; transform: scale(1.02) translate3d(0, 0, 0); }
  12%  { opacity: 1; }
  46%  { opacity: 1; }
  58%  { opacity: 0; transform: scale(1.15) translate3d(-1.1%, -.7%, 0); }
  100% { opacity: 0; transform: scale(1.15) translate3d(-1.1%, -.7%, 0); }
}
.hero.parado .slide { animation-play-state: paused; }
.hero-vinheta { position: absolute; inset: 0; pointer-events: none; background: linear-gradient(to top, rgb(13 13 12 / .55), transparent 38%), linear-gradient(to bottom, rgb(13 13 12 / .35), transparent 20%); }
.hero-veu { position: absolute; inset: 0; background: var(--papel); opacity: 0; pointer-events: none; }
.hero-marca { position: absolute; left: var(--gutter); bottom: clamp(56px, 11vh, 120px); z-index: 3; }
.hero-marca h1 { margin: 0; display: flex; font-size: clamp(88px, 15vw, 240px); line-height: .8; letter-spacing: 0; text-transform: lowercase; color: var(--papel); }
.hero-marca h1 span { display: inline-block; opacity: 0; filter: blur(14px); transform: translateY(.18em); letter-spacing: .3em; animation: letra 1.8s var(--ease) forwards; animation-delay: calc(.5s + var(--i) * .22s); }
@keyframes letra { to { opacity: 1; filter: blur(0); transform: none; letter-spacing: 0; } }
.hero-sub { margin: 18px 0 0 .4em; font-size: 12px; letter-spacing: .26em; text-transform: uppercase; color: rgb(239 236 230 / .85); opacity: 0; animation: surge 1.4s var(--ease) 1.7s forwards; }
@keyframes surge { to { opacity: 1; } }
.hero-dica { position: absolute; right: var(--gutter); bottom: clamp(56px, 11vh, 120px); z-index: 3; display: grid; justify-items: center; gap: 10px; font-size: 11px; letter-spacing: .3em; text-transform: uppercase; color: var(--papel); opacity: 0; animation: surge 1.4s var(--ease) 2.4s forwards; writing-mode: vertical-rl; }
.hero-dica::after { content: ""; width: 1px; height: 46px; background: linear-gradient(var(--papel), transparent); animation: dica 2.2s var(--ease) infinite; }
@keyframes dica { 0% { transform: scaleY(0); transform-origin: top; } 50% { transform: scaleY(1); transform-origin: top; } 51% { transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }
.botao { display: inline-flex; align-items: center; gap: 12px; margin-top: 22px; font: 500 13px/1 var(--fonte-texto); letter-spacing: .14em; text-transform: uppercase; text-decoration: none; cursor: pointer; color: var(--tinta); background: var(--papel); border: 0; border-radius: 0; padding: 18px 28px; transition: transform .4s var(--ease), background .3s; }
.botao:hover { transform: translateY(-2px); background: #fff; }
.botao[disabled] { opacity: .6; cursor: progress; }

/* ── Manifesto: papel, espaço negativo, frase que se revela ── */
.manifesto { padding: clamp(48px, 9vh, 110px) var(--gutter) clamp(40px, 7vh, 84px); }
.manifesto-in { width: 100%; max-width: var(--largura); margin: 0 auto; }
.frase { font-size: clamp(48px, 8.6vw, 148px); line-height: .98; margin: 0 0 clamp(24px, 4vh, 48px); max-width: 12em; }
.frase .p { display: inline-block; overflow: hidden; vertical-align: top; padding-bottom: .08em; }
.frase .p > span { display: inline-block; transform: translateY(105%); transition: transform 1s var(--ease); transition-delay: calc(var(--i) * .07s); }
.frase.visto .p > span { transform: none; }
.fio { height: 1px; background: var(--linha); transform: scaleX(0); transform-origin: left; transition: transform 1.2s var(--ease) .2s; margin-bottom: 22px; }
.fio.visto { transform: none; }
.conceitos { display: flex; flex-wrap: wrap; gap: 8px 36px; margin: 0; padding: 0; list-style: none; font-size: 12px; letter-spacing: .24em; text-transform: uppercase; color: var(--suave); }
.interludio { padding: clamp(20px, 4vh, 48px) var(--gutter); text-align: center; }
.interludio p { margin: 0; font-family: var(--fonte-titulo); font-style: italic; font-size: clamp(26px, 3.2vw, 50px); color: var(--tinta); }

/* ── Da ideia à forma ── */
.ideia .texto { grid-column: 1 / 7; align-self: center; }
.ideia .video { grid-column: 8 / -1; position: relative; aspect-ratio: 720 / 1000; max-height: 88vh; width: 100%; overflow: hidden; background: #2a2926; }
.ideia .video video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.ideia .rever { margin-top: 18px; background: none; border: 0; padding: 0 0 4px; font: 500 12px/1 var(--fonte-texto); letter-spacing: .18em; text-transform: uppercase; border-bottom: 1px solid var(--tinta); cursor: pointer; color: var(--tinta); opacity: 0; transition: opacity .6s; }
.ideia.fim .rever { opacity: 1; }

/* ── Seções editoriais ─────────────────────────────────────────────────── */
.secao { position: relative; padding: clamp(44px, 7vh, 96px) var(--gutter); }
.secao--alt { background: var(--papel-2); }
.grade { width: 100%; max-width: var(--largura); margin: 0 auto; display: grid; gap: clamp(24px, 3.6vw, 56px); grid-template-columns: repeat(12, 1fr); align-items: start; }
.cabeca { grid-column: 1 / -1; }
.escritorio .titulo { grid-column: 1 / 7; }
.escritorio .corpo { grid-column: 8 / -1; }
.dados { list-style: none; margin: 28px 0 0; padding: 0; display: grid; gap: 8px; font-size: 14px; color: var(--suave); border-top: 1px solid var(--linha); padding-top: 22px; }
.dados b { color: var(--tinta); font-weight: 500; }

.faixa-foto { position: relative; width: 100%; max-width: var(--largura); margin: 0 auto clamp(24px, 3.5vw, 48px); aspect-ratio: 21 / 9; overflow: hidden; background: #2a2926; }
.faixa-foto img { position: absolute; left: 0; width: 100%; top: -6%; height: 112%; object-fit: cover; will-change: transform; }
.filosofia .titulo { grid-column: 1 / 7; }
.filosofia .corpo { grid-column: 8 / -1; }

.processo .video { grid-column: 1 / 6; position: relative; aspect-ratio: 540 / 800; max-height: 86vh; width: 100%; overflow: hidden; background: #2a2926; }
.processo .video video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.processo .texto { grid-column: 7 / -1; align-self: center; }
.citacao { font-family: var(--fonte-titulo); font-size: clamp(26px, 2.8vw, 44px); line-height: 1.12; color: var(--tinta); margin: 28px 0 0; padding-top: 24px; border-top: 1px solid var(--linha); }

/* Galeria editorial: mosaicos por projeto, todas as células com foto */
.capitulo { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(12, 1fr); gap: clamp(8px, 1.4vw, 20px); align-items: start; margin-top: clamp(16px, 3vw, 44px); }
.capitulo-cab { grid-column: 1 / -1; display: flex; align-items: baseline; justify-content: space-between; gap: 16px; border-top: 1px solid var(--linha); padding-top: 18px; margin-bottom: 4px; }
.capitulo-cab h3 { margin: 0; font-size: clamp(34px, 4vw, 64px); }
.capitulo-cab span { font-size: 12px; letter-spacing: .2em; text-transform: uppercase; color: var(--acento); }
figure.foto { margin: 0; overflow: hidden; background: #2a2926; position: relative; }
figure.foto img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.6s var(--ease); }
figure.foto:hover img { transform: scale(1.04); }
.m-a { grid-column: 1 / 9; aspect-ratio: 2 / 1; }
.m-b { grid-column: 9 / -1; aspect-ratio: 1 / 1; }
.m-c { grid-column: 1 / 7; aspect-ratio: 2 / 1; }
.m-d { grid-column: 7 / -1; aspect-ratio: 2 / 1; }
.g-a { grid-column: 1 / 9; aspect-ratio: 4 / 3; }
.g-info { grid-column: 9 / -1; align-self: end; }
.p-a, .p-b, .p-c { grid-column: span 4; aspect-ratio: 4 / 5; }
.p-b { margin-top: clamp(24px, 6vw, 96px); }
.p-c { margin-top: clamp(8px, 2vw, 32px); }
.creditos { grid-column: 1 / -1; font-size: 13px; color: var(--suave); opacity: .85; margin: 0; }
.link { display: inline-block; margin-top: 6px; font-size: 13px; letter-spacing: .14em; text-transform: uppercase; text-decoration: none; border-bottom: 1px solid var(--tinta); padding-bottom: 4px; transition: opacity .3s; }
.link:hover { opacity: .6; }

.lista { grid-column: 1 / -1; list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--linha); }
.lista li { display: grid; grid-template-columns: 80px minmax(0, 5fr) minmax(0, 6fr); gap: 24px; align-items: baseline; padding: clamp(22px, 2.6vw, 36px) 0; border-bottom: 1px solid var(--linha); transition: padding .5s var(--ease), background .4s; }
.lista li:hover { padding-left: 16px; background: rgb(18 18 17 / .03); }
.lista .n { font-size: 12px; letter-spacing: .2em; color: var(--acento); }
.lista h3 { margin: 0; font-size: clamp(28px, 3vw, 46px); }
.lista p { margin: 0; }
@media (max-width: 760px) { .lista li { grid-template-columns: 1fr; gap: 6px; } }

.contato .texto { grid-column: 1 / 6; }
.contato .canais { list-style: none; padding: 0; margin: 28px 0 0; display: grid; gap: 10px; font-size: 15px; }
.contato .canais a { text-decoration: none; border-bottom: 1px solid var(--linha); padding-bottom: 2px; }
.contato .canais a:hover { border-color: var(--tinta); }
.form { grid-column: 7 / -1; display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.campo { display: grid; gap: 6px; }
.campo--inteiro { grid-column: 1 / -1; }
.campo label { font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--suave); }
.campo input, .campo textarea { width: 100%; font: inherit; color: var(--tinta); background: transparent; border: 0; border-bottom: 1px solid rgb(18 18 17 / .35); padding: 12px 0; transition: border-color .3s; resize: vertical; border-radius: 0; }
.campo input:focus, .campo textarea:focus { outline: none; border-color: var(--tinta); }
.campo.erro input { border-color: #b4483c; }
.pote { position: absolute; left: -9999px; }
.form-status { min-height: 1.4em; margin: 0; font-size: 14px; }
.form-status.ok { color: #4b5a3f; }
.form-status.falha { color: #b4483c; }
.form .botao { background: var(--tinta); color: var(--papel); justify-content: center; margin-top: 6px; }
.form .botao:hover { background: #000; }

.rodape { background: var(--papel); color: var(--suave); padding: 36px var(--gutter) 64px; border-top: 1px solid var(--linha); }
.rodape-in { max-width: var(--largura); margin: 0 auto; display: flex; flex-wrap: wrap; gap: 12px 32px; align-items: center; justify-content: space-between; font-size: 13px; }
.rodape .marca-texto { color: var(--tinta); font-size: 28px; }

/* WhatsApp */
.whats { position: fixed; right: max(16px, env(safe-area-inset-right)); bottom: 44px; z-index: 60; width: 58px; height: 58px; border-radius: 50%; display: grid; place-items: center; background: #25d366; color: #fff; box-shadow: 0 10px 30px rgb(0 0 0 / .35); transform: scale(0); transition: transform .5s var(--ease); }
.whats.visivel { transform: scale(1); }
.whats svg { width: 30px; height: 30px; }

/* Revelar */
.revelar { opacity: 0; transform: translateY(22px); transition: opacity .8s var(--ease), transform .9s var(--ease); }
.revelar.visto { opacity: 1; transform: none; }

@media (max-width: 960px) {
  .grade, .capitulo { grid-template-columns: 1fr; }
  .escritorio .titulo, .escritorio .corpo, .processo .video, .processo .texto, .contato .texto, .form, .g-a, .g-info { grid-column: 1 / -1; }
  .m-a, .m-b, .m-c, .m-d, .p-a, .p-b, .p-c { grid-column: 1 / -1; margin-top: 0; }
  .m-a, .m-c, .m-d { aspect-ratio: 3 / 2; } .m-b { aspect-ratio: 4 / 3; }
  .p-a, .p-b, .p-c { aspect-ratio: 4 / 5; }
  .processo .video { max-height: 78vh; aspect-ratio: 9 / 13; }
  .form { grid-template-columns: 1fr; }
  .faixa-foto { aspect-ratio: 4 / 3; }
  .filosofia .titulo, .filosofia .corpo, .ideia .texto, .ideia .video { grid-column: 1 / -1; }
  .ideia .video { max-height: 78vh; aspect-ratio: 9 / 13; }
  .hero-dica { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .revelar { opacity: 1; transform: none; }
  .slide { animation: none !important; }
  .slide:first-child { opacity: 1; }
  .hero-marca h1 span, .hero-sub, .hero-dica { animation: none !important; opacity: 1; filter: none; transform: none; letter-spacing: 0; }
  .frase .p > span { transform: none; } .fio { transform: none; }
}