/* =========================================================
   Rafaela Mendes Arquitetura — Design System
   Paleta: #000 (fonte) · #FFF (fundo) · #d3d3d3 (linhas) · #778899 (CTA)
   ========================================================= */

:root{
  --ink: #000000;
  --paper: #ffffff;
  --paper-soft: #f6f6f5;
  --line: #d3d3d3;
  --cta: #778899;
  --cta-dark: #5f6e79;
  --overlay: rgba(0,0,0,.55);
  --ink-60: rgba(0,0,0,.6);
  --ink-40: rgba(0,0,0,.4);

  --font-serif: 'Cormorant Garamond', 'Times New Roman', serif;
  --font-sans: 'Work Sans', 'Helvetica Neue', Arial, sans-serif;

  --ease-spring: cubic-bezier(.34, 1.56, .64, 1);
  --ease-smooth: cubic-bezier(.16, 1, .3, 1);

  --container: 1240px;
  --gutter: clamp(20px, 5vw, 64px);
  --header-h: 92px;
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; scroll-padding-top: var(--header-h); }
body{
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, video{ max-width: 100%; display: block; }
a{ color: inherit; text-decoration: none; }
h1,h2,h3,h4{ font-family: var(--font-serif); font-weight: 500; margin: 0; line-height: 1.15; }
p{ margin: 0; }
ul{ margin:0; padding:0; list-style:none; }
button{ font-family: inherit; cursor: pointer; background:none; border:none; color:inherit; }

.container{ max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.eyebrow{
  font-family: var(--font-sans);
  font-size: .75rem;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--cta-dark);
  margin: 0 0 14px;
}
.hide-mobile{ display:inline; }

.btn-ghost, .btn-outline, .btn-solid{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 34px;
  font-size: .75rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  border: 1px solid currentColor;
  transition: background .3s ease, color .3s ease, border-color .3s ease, transform .4s var(--ease-spring);
}
.btn-ghost:hover, .btn-outline:hover, .btn-solid:hover{ transform: translateY(-3px); }
.btn-ghost:active, .btn-outline:active, .btn-solid:active{ transform: translateY(-1px) scale(.98); }
.btn-ghost{ color: var(--paper); border-color: rgba(255,255,255,.7); }
.btn-ghost:hover{ background: var(--paper); color: var(--ink); }
.btn-outline{ color: var(--ink); border-color: var(--ink); }
.btn-outline:hover{ background: var(--ink); color: var(--paper); }
.btn-solid{ color: var(--ink); background: var(--paper); border-color: var(--paper); width: 100%; justify-content:center; }
.btn-solid:hover{ background: transparent; color: var(--paper); border-color: var(--paper); }

/* =========================================================
   HEADER
   ========================================================= */
.site-header{
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 500;
  height: var(--header-h);
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line);
  transition: background .3s ease;
}
.header-inner{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand{ display: flex; align-items: center; gap: 14px; }
.brand-mark{ height: 46px; width: auto; }
.brand-word{ display: flex; flex-direction: column; line-height: 1.1; }
.brand-word strong{
  font-family: var(--font-serif);
  font-size: 1.28rem;
  font-weight: 600;
  letter-spacing: .04em;
}
.brand-word small{
  font-size: .62rem;
  letter-spacing: .38em;
  text-transform: uppercase;
  color: var(--cta-dark);
  margin-top: 3px;
}

.nav-desktop{ display: flex; align-items: center; gap: 40px; }
.nav-desktop a{
  font-size: .74rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  position: relative;
  padding-bottom: 4px;
}
.nav-desktop a::after{
  content: '';
  position: absolute; left:0; right:0; bottom:0;
  height: 1px; background: var(--ink);
  transform: scaleX(0); transform-origin: right;
  transition: transform .3s ease;
}
.nav-desktop a:hover::after{ transform: scaleX(1); transform-origin: left; }
.nav-desktop a.nav-insta{ color: var(--cta-dark); }

.hamburger{
  width: 44px; height: 44px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px;
  flex-shrink: 0;
}
.hamburger span{
  width: 26px; height: 1px; background: var(--ink);
  transition: transform .35s ease, opacity .35s ease;
}
.hamburger[aria-expanded="true"] span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.hamburger[aria-expanded="true"] span:nth-child(2){ opacity: 0; }
.hamburger[aria-expanded="true"] span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

.off-canvas{
  position: fixed; top:0; right:0; bottom:0;
  width: min(420px, 88vw);
  background: var(--ink);
  color: var(--paper);
  z-index: 700;
  transform: translateX(100%);
  transition: transform .5s cubic-bezier(.77,0,.18,1);
  display: flex; flex-direction: column;
  padding: 40px clamp(28px, 6vw, 56px);
}
.off-canvas.is-open{ transform: translateX(0); }
.off-canvas-close{
  align-self: flex-end;
  font-size: 2rem; color: var(--paper); line-height: 1;
  width: 44px; height: 44px;
}
.off-canvas nav{ margin-top: 48px; display: flex; flex-direction: column; gap: 6px; }
.off-canvas nav a{
  font-family: var(--font-serif);
  font-size: 2.1rem;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,.15);
  transition: color .3s ease, padding-left .3s ease, opacity .5s ease, transform .5s var(--ease-smooth);
  opacity: 0;
  transform: translateX(24px);
}
.off-canvas nav a:hover{ color: var(--cta); padding-left: 10px; }
.off-canvas.is-open nav a{ opacity: 1; transform: translateX(0); }
.off-canvas.is-open nav a:nth-child(1){ transition-delay: .1s; }
.off-canvas.is-open nav a:nth-child(2){ transition-delay: .17s; }
.off-canvas.is-open nav a:nth-child(3){ transition-delay: .24s; }
.off-canvas.is-open nav a:nth-child(4){ transition-delay: .31s; }
.off-canvas.is-open .off-canvas-instagram{ transition-delay: .4s; }
.off-canvas-instagram{
  margin-top: auto;
  display: flex; align-items: center; gap: 10px; width: max-content;
  font-size: .8rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cta);
  padding-top: 30px;
  opacity: 0;
  transform: translateX(24px);
  transition: transform .4s var(--ease-spring), opacity .5s ease;
}
.off-canvas.is-open .off-canvas-instagram{ opacity: 1; transform: translateX(0); }
.off-canvas.is-open .off-canvas-instagram:hover{ transform: translateX(4px); }

/* Ícones inline (Instagram / WhatsApp) usados em links de texto */
.icon-insta-inline, .icon-whats-inline{
  width: 15px; height: 15px;
  flex-shrink: 0;
  transition: transform .35s var(--ease-spring);
}
a:hover .icon-insta-inline{ transform: scale(1.15) rotate(8deg); }
a:hover .icon-whats-inline{ transform: scale(1.15) rotate(-8deg); }
.nav-desktop a.nav-insta{ display: inline-flex; align-items: center; gap: 7px; }
.footer-contact-list a{ display: flex; align-items: center; gap: 9px; width: max-content; transition: transform .3s var(--ease-spring); }
.footer-contact-list a:hover{ transform: translateX(4px); }
.footer-social a{ display: inline-flex; align-items: center; gap: 7px; }
.off-canvas-backdrop{
  position: fixed; inset: 0; background: rgba(0,0,0,.4);
  z-index: 600; opacity: 0; pointer-events: none; transition: opacity .4s ease;
}
.off-canvas-backdrop.is-open{ opacity: 1; pointer-events: auto; }
body.menu-open{ overflow: hidden; }

/* =========================================================
   HERO
   ========================================================= */
.hero{
  position: relative;
  height: 100svh;
  min-height: 560px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.hero-video{
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
}
.hero-overlay{
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,.5) 0%, rgba(0,0,0,.4) 45%, rgba(0,0,0,.62) 100%);
}
.hero-content{
  position: relative; z-index: 2;
  text-align: center;
  color: var(--paper);
  padding: 0 24px;
  max-width: 920px;
}
.hero-content h1{
  font-size: clamp(1.9rem, 4.4vw, 3.4rem);
  font-weight: 400;
  font-style: italic;
  letter-spacing: .01em;
  margin-bottom: 38px;
  opacity: 0;
  animation: heroReveal 1s var(--ease-smooth) .15s forwards;
}
.hero-content .btn-ghost{
  opacity: 0;
  animation: heroReveal .9s var(--ease-smooth) .45s forwards;
}
@keyframes heroReveal{
  from{ opacity: 0; transform: translateY(22px); }
  to{ opacity: 1; transform: translateY(0); }
}
.hero-scroll{
  position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
  z-index: 2; color: var(--paper); opacity: .75;
  font-size: .65rem; letter-spacing: .3em; text-transform: uppercase;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.hero-scroll::after{
  content:''; width:1px; height:34px; background: rgba(255,255,255,.7);
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine{ 0%,100%{ transform: scaleY(1); opacity:.8; } 50%{ transform: scaleY(.4); opacity:.3; } }

/* =========================================================
   SOBRE
   ========================================================= */
.sobre{ padding: 120px 0; background: var(--paper); }
.sobre-grid{
  display: grid;
  grid-template-columns: .8fr 1fr;
  gap: clamp(32px, 6vw, 90px);
  align-items: center;
}
.sobre-photo{ margin:0; position: relative; max-width: 460px; }
.sobre-photo::before{
  content:'';
  position: absolute;
  top: -18px; left: -18px;
  width: 100%; height: 100%;
  border: 1px solid var(--line);
  z-index: 0;
}
.sobre-photo img{
  position: relative; z-index: 1;
  width: 100%; height: auto;
  aspect-ratio: 2 / 3;
  object-fit: cover;
  object-position: center top;
}
.sobre-text h2{ font-size: clamp(2rem, 3.4vw, 2.8rem); margin-bottom: 26px; }
.sobre-text p{ font-size: 1.02rem; line-height: 1.85; color: #333; margin-bottom: 20px; }
.sobre-text .assinatura{
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.3rem;
  margin: 28px 0 34px;
  color: var(--ink);
}
.sobre-ctas{
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 8px;
}

/* =========================================================
   MOSAICO DE PROJETOS
   ========================================================= */
.projetos{ padding: 110px 0 130px; background: var(--paper-soft); }
.section-head{ text-align: center; margin-bottom: 56px; }
.section-head h2{ font-size: clamp(2.1rem, 4vw, 3rem); }
.section-head p.subline{ margin-top: 18px; color: #444; font-size: 1rem; max-width: 560px; margin-left:auto; margin-right:auto; }

.mosaic{
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-auto-rows: 190px;
  grid-auto-flow: dense;
  gap: 14px;
}
.mosaic-item{
  position: relative;
  grid-column: span 3;
  grid-row: span 2;
  overflow: hidden;
  display: block;
  background: var(--ink);
  transition: transform .5s var(--ease-spring), box-shadow .5s ease;
}
.mosaic-item:hover{
  transform: translateY(-6px);
  box-shadow: 0 18px 34px rgba(0,0,0,.28);
  z-index: 3;
}
.mosaic-item.size-lg{ grid-column: span 4; grid-row: span 3; }
.mosaic-item.size-md{ grid-column: span 3; grid-row: span 3; }
.mosaic-item.size-sm{ grid-column: span 2; grid-row: span 2; }
.mosaic-item.size-wide{ grid-column: span 4; grid-row: span 2; }
.mosaic-item.size-tall{ grid-column: span 2; grid-row: span 3; }

.mosaic-item img{
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  filter: grayscale(1) contrast(1.05);
  transform: scale(1.03);
  transition: transform 1.4s cubic-bezier(.16,1,.3,1), filter .8s ease;
}
.mosaic-item::after{
  content:'';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0) 45%, rgba(0,0,0,.82) 100%);
  opacity: .75;
  transition: opacity .5s ease;
}
.mosaic-item:hover img{ filter: grayscale(0) contrast(1.02); transform: scale(1.1); }

/* Em telas sem hover (touch/mobile), a imagem colore ao ficar 60% visível no scroll */
@media (hover: none){
  .mosaic-item.is-in-view img{ filter: grayscale(0) contrast(1.02); }
}
.mosaic-item:hover::after{ opacity: .9; }

.mosaic-caption{
  position: absolute; left: 0; right: 0; bottom: 0;
  z-index: 2;
  padding: 22px 24px;
  color: var(--paper);
  display: flex; flex-direction: column; gap: 8px;
}
.mosaic-index{
  font-size: .68rem; letter-spacing: .2em; color: var(--cta);
  text-transform: uppercase;
}
.mosaic-title{
  font-family: var(--font-serif);
  font-size: 1.18rem;
  line-height: 1.25;
}
.mosaic-link{
  font-size: .68rem; letter-spacing: .16em; text-transform: uppercase;
  opacity: 0; transform: translateY(6px);
  transition: opacity .4s ease, transform .4s ease;
  color: rgba(255,255,255,.85);
}
.mosaic-item:hover .mosaic-link{ opacity: 1; transform: translateY(0); }

/* =========================================================
   INSTAGRAM CTA
   ========================================================= */
.instagram-cta{
  position: relative;
  height: 62vh;
  min-height: 380px;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.instagram-cta img{
  position: absolute; inset:0; width:100%; height:100%; object-fit: cover;
  filter: grayscale(1);
}
.instagram-cta::before{
  content:''; position:absolute; inset:0; background: rgba(0,0,0,.4); z-index: 1;
}
.instagram-cta-content{ position: relative; z-index:1; text-align:center; color: var(--paper); }
.instagram-cta-content p{ font-size:.75rem; letter-spacing:.35em; text-transform:uppercase; margin-bottom:18px; color: rgba(255,255,255,.85); }
.instagram-cta-content a{
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-style: italic;
  display: inline-flex; align-items:center; gap:16px;
  border-bottom: 1px solid rgba(255,255,255,.5);
  padding-bottom: 8px;
  transition: color .3s ease, border-color .3s ease;
}
.instagram-cta-content a:hover{ color: var(--cta); border-color: var(--cta); }
.icon-insta{ width: 30px; height: 30px; flex-shrink: 0; }

/* =========================================================
   FOOTER / CONTATO
   ========================================================= */
.site-footer{ background: var(--ink); color: var(--paper); padding: 100px 0 0; }
.footer-grid{
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: clamp(40px, 6vw, 100px);
  padding-bottom: 80px;
  border-bottom: 1px solid rgba(255,255,255,.14);
}
.footer-info .brand-mark-footer{ height: 52px; width:auto; margin-bottom: 26px; filter: invert(1); }
.footer-info h3{ font-size: 1.7rem; margin-bottom: 16px; }
.footer-info p{ color: rgba(255,255,255,.65); line-height: 1.8; margin-bottom: 26px; max-width: 380px; }
.footer-contact-list{ display:flex; flex-direction:column; gap: 12px; }
.footer-contact-list a{ font-size:.85rem; letter-spacing:.05em; color: rgba(255,255,255,.85); }
.footer-contact-list a:hover{ color: var(--cta); }

.footer-form h3{ font-size: 1.5rem; margin-bottom: 8px; }
.footer-form > p{ color: rgba(255,255,255,.6); margin-bottom: 30px; font-size: .92rem; }
.form-row{ display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 18px; }
.field{ display:flex; flex-direction: column; gap: 8px; }
.field label{ font-size: .68rem; letter-spacing: .16em; text-transform: uppercase; color: rgba(255,255,255,.55); }
.field input, .field textarea, .field select{
  background: transparent;
  border: none;
  border-bottom: 1px solid rgba(255,255,255,.3);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: .95rem;
  padding: 10px 2px;
  outline: none;
  transition: border-color .3s ease;
}
.field select option{ color: var(--ink); }
.field input:focus, .field textarea:focus, .field select:focus{ border-color: var(--cta); }
.field textarea{ resize: vertical; min-height: 90px; }
.field.full{ grid-column: 1 / -1; }
.form-note{ font-size: .74rem; color: rgba(255,255,255,.4); margin-top: 14px; }
.form-status{ font-size: .82rem; margin-top: 14px; color: var(--cta); min-height: 1.2em; }

.footer-bottom{
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 14px;
  padding: 26px 0 32px;
  font-size: .74rem; letter-spacing: .04em;
  color: rgba(255,255,255,.5);
}
.footer-bottom a{ color: rgba(255,255,255,.7); }
.footer-bottom a:hover{ color: var(--cta); }
.footer-social{ display:flex; gap: 18px; }

/* =========================================================
   PÁGINA DE PROJETO
   ========================================================= */
.project-hero{
  position: relative;
  height: 64vh; min-height: 420px;
  display:flex; align-items: flex-end;
  overflow: hidden;
}
.project-hero img{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; }
.project-hero::before{ content:''; position:absolute; inset:0; background: linear-gradient(180deg, rgba(0,0,0,.25), rgba(0,0,0,.75)); }
.project-hero-content{ position: relative; z-index:1; color: var(--paper); padding: 0 var(--gutter) 56px; max-width: var(--container); margin: 0 auto; width: 100%; }
.project-breadcrumb{ font-size: .72rem; letter-spacing:.2em; text-transform:uppercase; color: rgba(255,255,255,.75); margin-bottom: 18px; display:block; }
.project-breadcrumb a:hover{ color: var(--cta); }
.project-hero-content h1{ font-size: clamp(2rem, 4.6vw, 3.4rem); font-style: italic; max-width: 800px; }

.project-body{ padding: 80px 0 60px; }
.project-desc{ max-width: 760px; margin: 0 auto 64px; text-align:center; }
.project-desc p{ font-size: 1.08rem; line-height: 1.85; color:#333; }

.project-gallery{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.project-gallery figure{ margin:0; overflow:hidden; cursor: zoom-in; position: relative; }
.project-gallery figure:first-child{ grid-column: 1 / -1; height: 560px; }
.project-gallery img, .project-gallery video{
  width:100%; height: 100%; object-fit: cover; object-position: center 62%; display:block;
  transition: transform .8s cubic-bezier(.16,1,.3,1);
}
.project-gallery figure:not(:first-child){ height: 360px; }
.project-gallery figure:hover img{ transform: scale(1.05); }

.project-nav{
  display:flex; justify-content: space-between; align-items:center;
  padding: 60px 0 100px; border-top: 1px solid var(--line); margin-top: 70px;
}
.project-nav a{ font-size: .78rem; letter-spacing:.14em; text-transform:uppercase; }
.project-nav a:hover{ color: var(--cta-dark); }

/* Lightbox */
.lightbox{
  position: fixed; inset:0; background: rgba(0,0,0,.94); z-index: 900;
  display: none; align-items: center; justify-content: center; padding: 40px;
}
.lightbox.is-open{ display:flex; }
.lightbox img{ max-width: 100%; max-height: 88vh; object-fit: contain; }
.lightbox-close, .lightbox-prev, .lightbox-next{
  position: absolute; color: var(--paper); font-size: 1.6rem;
  width: 52px; height: 52px; display:flex; align-items:center; justify-content:center;
}
.lightbox-close{ top: 18px; right: 18px; font-size: 2rem; }
.lightbox-prev{ left: 10px; top: 50%; transform: translateY(-50%); }
.lightbox-next{ right: 10px; top: 50%; transform: translateY(-50%); }
.lightbox-prev:hover, .lightbox-next:hover, .lightbox-close:hover{ color: var(--cta); }

/* =========================================================
   RESPONSIVO
   ========================================================= */
@media (max-width: 980px){
  .nav-desktop{ display: none; }
  .sobre-grid{ grid-template-columns: 1fr; }
  .sobre-photo{ max-width: 420px; margin: 0 auto; }
  .footer-grid{ grid-template-columns: 1fr; }
  .mosaic{ grid-template-columns: repeat(4, 1fr); grid-auto-rows: 170px; }
  .mosaic-item, .mosaic-item.size-lg, .mosaic-item.size-md, .mosaic-item.size-wide{ grid-column: span 4; grid-row: span 2; }
  .mosaic-item.size-sm, .mosaic-item.size-tall{ grid-column: span 2; grid-row: span 2; }
}

@media (max-width: 640px){
  :root{ --header-h: 76px; }
  .brand-mark{ height: 36px; }
  .brand-word strong{ font-size: 1.02rem; }
  .brand-word small{ font-size: .54rem; letter-spacing: .3em; }
  .hide-mobile{ display:none; }
  .hero-content h1{ font-size: 1.65rem; }
  .sobre{ padding: 80px 0; }
  .sobre-photo::before{ display:none; }
  .projetos{ padding: 80px 0; }
  .mosaic{ grid-template-columns: repeat(2, 1fr); grid-auto-rows: 220px; gap: 10px; }
  .mosaic-item, .mosaic-item.size-lg, .mosaic-item.size-md, .mosaic-item.size-wide, .mosaic-item.size-sm, .mosaic-item.size-tall{
    grid-column: span 2; grid-row: span 2;
  }
  .form-row{ grid-template-columns: 1fr; }
  .footer-bottom{ flex-direction: column; align-items: flex-start; }
  .project-gallery{ grid-template-columns: 1fr; }
  .project-gallery figure:first-child{ height: 320px; }
  .project-gallery figure:not(:first-child){ height: 280px; }
}