:root{
  --bg:#ffffff;
  --ink:#111111;
  --muted:#666;
  --line:#ddd;
  --maxw:1600px;
  --maxw-mobile:100%;
  --pad:clamp(24px,5vw,72px);
  --col-gap:clamp(20px,3vw,40px);
  --gap:clamp(12px,1.6vw,22px);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--ink);
  font-family:"Montserrat","Helvetica Now Display",serif;font-size:17px;line-height:1.45;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{display:block;width:100%;height:auto}

/* ---------- HEADER ---------- */
header{
  position:static;top:0;left:0;width:100%;
  display:flex;align-items:center;justify-content:space-between;
  padding:22px var(--pad);z-index:100;
  background:rgba(255,255,255,.85);backdrop-filter:blur(8px);
  transition:transform .35s ease;
}
header.hide{transform:translateY(-100%)}
.logo{font-family:"Instrument Serif",normal;font-size:30px;font-weight:400;letter-spacing:-.02em}
.nav-right{display:flex;align-items:center;gap:26px}
nav ul{display:flex;gap:24px;list-style:none}
nav a{font-size:16px;position:relative}
nav a:hover,nav a.active{text-decoration:underline;text-underline-offset:4px}
.social{display:flex;gap:16px}
.social a{font-size:16px;line-height:1}
.menu-btn{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:4px}
.menu-btn span{width:24px;height:1.5px;background:var(--ink)}

/* ---------- MENU MOBILE (overlay) ---------- */
.mobile-menu{
  position:fixed;inset:0;z-index:200;background:#fff;
  display:flex;flex-direction:column;padding:22px var(--pad);
  opacity:0;visibility:hidden;transition:opacity .3s ease;
}
.mobile-menu.open{opacity:1;visibility:visible}
.mobile-menu-top{display:flex;align-items:center;justify-content:space-between}
.mobile-menu-top .logo{font-family:"Instrument Serif",serif;font-size:30px}
.close-btn{background:none;border:0;cursor:pointer;font-size:30px;line-height:1;color:var(--ink);font-weight:300}
.mobile-menu nav{flex:1;display:flex;align-items:center;justify-content:center}
.mobile-menu nav ul{display:flex;flex-direction:column;gap:20px;list-style:none;text-align:center}
.mobile-menu nav a{font-family:"Montserrat",serif;font-size:30px;font-weight:500}
.mobile-menu .social{justify-content:center;gap:28px;padding-bottom:30px}
.mobile-menu .social a{font-size:22px}

/* ---------- HERO (home) ---------- */
.hero{padding:70px var(--pad) 70px;text-align:center}
.hero h1{
  font-family:"Instrument Serif",serif;font-weight:400;
  font-size:clamp(35px,3.6vw,46px);line-height:1.1;
  max-width:50ch;margin:0 auto;letter-spacing:-.02em;
}
.hero h1 u{text-decoration:underline;text-underline-offset:3px}

/* ---------- GRID DE PROJETOS (home) ---------- */
.work{max-width:var(--maxw);margin:0 auto;padding:20px var(--pad) 60px}
.grid{
  display:grid;grid-template-columns:1fr 1fr;
  column-gap:var(--col-gap);row-gap:clamp(40px,5vw,64px);
}
.item{display:block}
.item .thumb{width:100%;aspect-ratio:1/1;overflow:hidden;background:#eee;border-radius:2px}
.item .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.item:hover .thumb img{transform:scale(1.03)}
.item h3{font-family:"Instrument Serif",serif;font-weight:500;font-size:22px;margin-top:12px;letter-spacing:.01em}

/* ---------- CONTEUDO DO PROJETO ---------- */
.project-wrap{max-width:var(--maxw);margin:0 auto;padding:calc(5px + clamp(20px,4vw,56px)) var(--pad) 0}
.full{width:100%}
.full img{width:100%;height:auto;display:block}
.hero-img{width:100%;margin-bottom:clamp(50px,5vw,64px)}
.hero-img img{width:100%;height:auto;display:block}

/* Intro */
.intro{
  max-width:var(--maxw);margin:0 auto;padding:clamp(30px,6vw,42px) 0;
  display:grid;grid-template-columns:1fr;gap:clamp(30px,6vw,80px);
}
.intro p{font-family:"Montserrat",sans-serif;font-weight:400;color:#111;max-width:100%;font-size:17px;line-height:1.3}
.deliverables{font-family:"Montserrat",sans-serif;font-weight:400;font-size:17px;line-height:1.3}
.deliverables strong{display:block;font-weight:500;margin-bottom:6px}
.deliverables a{text-decoration:underline;text-underline-offset:3px}
h1{font-family:"Instrument Serif",serif;font-weight:500;font-size:clamp(28px,3vw,34px);margin-top:20px}

/* ---------- GALERIA ---------- */
.gallery{max-width:var(--maxw);margin:0 auto;padding:0}
.block{margin-bottom:clamp(24px,4vw,64px);margin-top:clamp(24px,4vw,64px)}
.cols-2{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,5vw,90px)}
.cols-3{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,3vw,48px)}
.block img,.cols-2 img,.cols-3 img{object-fit:cover;width:100%;height:100%;display:block}
.cell{overflow:hidden;background:#eee}
.cell.tall{aspect-ratio:3/4}
.cell.feeds{aspect-ratio:1/1;max-height:1000px}
.cell.wide{aspect-ratio:4/3}
.cell.square{aspect-ratio:1/1}
.cell.landscape{aspect-ratio:16/9}
.cols-2.uneven{align-items:start}
.row-air{display:grid;grid-template-columns:1fr 1fr 1fr;gap:clamp(24px,5vw,80px);align-items:center}
.row-air .spacer{display:flex;align-items:center;justify-content:center}
.row-air .spacer img{width:80%;height:auto}
.caption{text-align:center;color:#111;font-family:"Hanken Grotesk",sans-serif;font-size:17px;line-height:1.5;padding:clamp(24px,4vw,44px) var(--pad);max-width:60ch;margin:0 auto}

/* ---------- PLAYER DE VIDEO ---------- */
.video-section{max-width:var(--maxw);margin:0 auto;padding-bottom:clamp(30px,5vw,60px)}
.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,3vw,48px)}
.video-frame{width:100%;margin:0 auto;aspect-ratio:9/16;background:#111;overflow:hidden}
.video-frame video{width:100%;height:100%;object-fit:cover;display:block;background:#111}
.video-switch{display:none;justify-content:center;flex-wrap:wrap;gap:clamp(10px,1.5vw,16px);margin-top:clamp(20px,3vw,32px)}
.video-switch button{
  font-family:"Montserrat",sans-serif;font-size:15px;font-weight:400;
  padding:11px 26px;border:1px solid var(--ink);background:#fff;color:var(--ink);
  border-radius:7px;cursor:pointer;transition:.2s;
}
.video-switch button:hover{background:#f2f2f2}
.video-switch button.active{background:var(--ink);color:#fff}

/* ---------- NAVEGACAO ANTERIOR/PROXIMO ---------- */
.proj-nav{max-width:var(--maxw);margin:30px auto 0;padding:30px var(--pad) 60px;display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line)}
.proj-nav a{font-family:"Newsreader",serif;font-size:clamp(16px,2vw,22px);display:flex;flex-direction:column;gap:2px}
.proj-nav a span{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.proj-nav a.next{text-align:right;align-items:flex-end}

/* ---------- CONTATO ---------- */
.contact{max-width:var(--maxw);margin:0 auto;padding:30px var(--pad) 40px;display:grid;grid-template-columns:1fr 1.2fr;gap:clamp(40px,6vw,90px);align-items:start;}
.contact-left h2{font-family:"Instrument Serif",serif;font-weight:500;font-size:35px;margin-bottom:22px}
.contact-left p{color:#333;margin-bottom:18px;max-width:42ch;font-size:17px}
.contact-left u{text-underline-offset:3px}
.contact-left .social{margin-top:26px}

.btn{
  padding:15px;
  border:0.5px solid;
  border-radius:7px;
  background:rgba(128,0,0,0);
  font-family:Montserrat;
  font-size:15px;
}

/* ---------- FORMULARIO ---------- */
form{display:grid;gap:22px}
.field label,.legend{display:block;font-size:15px;margin-bottom:8px}
.field label .req,.legend .req{color:var(--muted);font-size:13px}
.field .hint{display:block;color:var(--muted);font-size:13px;margin:-4px 0 8px;line-height:1.4}
input[type=text],input[type=email],textarea,select{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:2px;font-family:inherit;font-size:15px;background:#fff;color:var(--ink)}
textarea{min-height:96px;resize:vertical}
.two{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.checks{display:grid;gap:10px}
.checks label{display:flex;align-items:center;gap:10px;font-size:15px;color:#333}
input:focus,textarea:focus,select:focus{outline:1px solid var(--ink);border-color:var(--ink)}
button[type=submit]{justify-self:start;padding:10px 22px;border:1px solid var(--ink);background:#fff;font-family:inherit;font-size:15px;cursor:pointer;border-radius:2px;transition:.2s}
button[type=submit]:hover{background:var(--ink);color:#fff}

/* ---------- MOBILE ---------- */
@media(max-width:820px){
  header nav,header .social{display:none}
  .menu-btn{display:flex}
  .hero{padding:30px var(--pad) 30px}
  .hero h1{max-width:20ch}
  .grid{grid-template-columns:1fr;row-gap:36px}
  .work{max-width:var(--maxw-mobile);margin:0 auto;padding:20px var(--pad) 30px}
  .intro{grid-template-columns:1fr;gap:28px}
  .contact{grid-template-columns:1fr;gap:40px;border-top:none;margin:0 auto}
  .two{grid-template-columns:1fr}
  .full,.hero-img{width:100%}
  .cols-2,.cols-3,.row-air{display:grid;grid-template-columns:1fr 1fr;gap:16px 16px;align-items:start}
  .cols-2 .cell,.cols-3 .cell,.row-air .cell{grid-column:1}
  .cols-2 .cell:nth-child(2n),
  .cols-3 .cell:nth-child(2n),
  .row-air .cell:nth-child(2n){grid-column:2}
  .row-air .spacer{display:flex;grid-column:2}
  .row-air .spacer img{width:100%}
  .video-grid{display:block;max-width:320px;margin:0 auto}
  .video-grid .video-frame{display:none}
  .video-grid .video-frame.active{display:block}
  .video-switch{display:flex}
}
@media(min-width:821px){
  .mobile-menu{display:none}
}