:root{
    --paper:#FAFAF8;
    --paper-alt:#F1F0EC;
    --ink:#17191A;
    --sky:#29BBDA;
    --stone:#6E7377;
    --line:#E1E0DB;
    --deep:#101213;
    --deep-line:#2B2E2F;
    --maxw:1240px;
  }
  *{margin:0;padding:0;box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    font-family:'IBM Plex Sans', sans-serif;
    background:var(--paper);
    color:var(--ink);
    line-height:1.5;
    -webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%;}
  a{color:inherit;text-decoration:none;}
  .wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px;}
  .mono{font-family:'IBM Plex Mono', monospace;}
  .eyebrow{
    font-family:'IBM Plex Mono', monospace;
    font-size:12px;
    letter-spacing:0.14em;
    text-transform:uppercase;
    color:var(--sky);
    font-weight:500;
    display:flex;
    align-items:center;
    gap:10px;
  }
  .eyebrow::before{
    content:"";
    width:22px;height:1px;
    background:var(--sky);
    display:inline-block;
  }
  h1,h2,h3{
    font-family:'Jost', sans-serif;
    font-weight:700;
    letter-spacing:-0.01em;
    line-height:1.02;
  }

  /* ---------- HEADER ---------- */
  header{
    position:fixed;top:0;left:0;right:0;
    z-index:100;
    padding:16px 0;
    transition:background .35s ease, padding .35s ease, border-color .35s ease;
    border-bottom:1px solid transparent;
  }
  header.scrolled{
    background:rgba(250,250,248,0.92);
    backdrop-filter:blur(10px);
    padding:10px 0;
    border-bottom:1px solid var(--line);
  }
  header .wrap{display:flex;align-items:center;justify-content:space-between;}
  .brand{display:flex;align-items:center;gap:10px;}
  .brand img{height:60px;width:auto;filter:brightness(0) invert(1);transition:filter .35s ease, height .35s ease;}
  header.scrolled .brand img{filter:none;height:46px;}
  nav{display:flex;align-items:center;gap:36px;}
  nav a:not(.btn){
    font-family:'IBM Plex Mono', monospace;
    font-size:13px;
    letter-spacing:.04em;
    text-transform:uppercase;
    color:#fff;
    transition:color .35s ease, opacity .2s ease;
    opacity:.85;
  }
  nav a:not(.btn):hover{opacity:1;}
  header.scrolled nav a:not(.btn){color:var(--ink);}
  .btn{
    font-family:'IBM Plex Mono', monospace;
    font-size:13px;
    letter-spacing:.03em;
    padding:10px 18px;
    border:1px solid var(--sky);
    color:var(--sky) !important;
    border-radius:2px;
    transition:background .2s ease, color .2s ease;
    white-space:nowrap;
  }
  header.scrolled .btn{border-color:var(--ink);color:var(--ink) !important;}
  .btn:hover{background:var(--sky);color:var(--ink) !important;border-color:var(--sky);}
  .menu-toggle{display:none;background:none;border:0;cursor:pointer;padding:6px;}
  .menu-toggle span{display:block;width:22px;height:2px;background:#fff;margin:5px 0;transition:.3s;}
  header.scrolled .menu-toggle span{background:var(--ink);}

  /* ---------- HERO ---------- */
  .hero{
    position:relative;
    height:100svh;min-height:560px;
    display:flex;flex-direction:column;justify-content:flex-end;
    overflow:hidden;
  }
  .hero-media{position:absolute;inset:0;}
  .hero-media img{width:100%;height:100%;object-fit:cover;}
  .hero-media::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg, rgba(16,18,19,.62) 0%, rgba(16,18,19,.3) 30%, rgba(16,18,19,.42) 58%, rgba(16,18,19,.92) 100%);
  }
  .hero-content{position:relative;z-index:2;color:#fff;padding-bottom:72px;}
  .hero-content .eyebrow{color:var(--sky);margin-bottom:22px;}
  .hero-content .eyebrow::before{background:var(--sky);}
  .hero h1{
    font-size:clamp(40px, 6.6vw, 92px);
    max-width:15ch;
    margin-bottom:26px;
  }
  .hero p{
    font-size:clamp(15px,1.5vw,18px);
    max-width:46ch;
    color:rgba(255,255,255,.82);
    margin-bottom:36px;
    font-weight:400;
  }
  .hero-cta{display:flex;gap:16px;flex-wrap:wrap;}
  .hero-cta a{
    font-family:'IBM Plex Mono', monospace;
    font-size:13px;
    letter-spacing:.03em;
    padding:14px 22px;
    border-radius:2px;
    border:1px solid rgba(255,255,255,.4);
    color:#fff;
    transition:.2s;
  }
  .hero-cta a.solid{background:var(--sky);border-color:var(--sky);color:var(--ink);font-weight:600;}
  .hero-cta a:hover{border-color:#fff;}
  .hero-cta a.solid:hover{background:#fff;color:var(--ink);}

  .hero-marks{
    position:absolute;z-index:2;color:rgba(255,255,255,.55);
    font-family:'IBM Plex Mono', monospace;font-size:11px;letter-spacing:.06em;
  }
  .mark-tl{top:24px;left:32px;}
  .mark-tr{top:24px;right:32px;text-align:right;}
  @media(min-width:641px){
    .mark-tl,.mark-tr{top:110px;}
  }
  @media(max-width:760px){
    .hero-marks{display:none;}
  }

  /* ---------- SECTION GENERIC ---------- */
  section{padding:120px 0;}
  .section-head{
    display:flex;justify-content:space-between;align-items:flex-end;
    gap:24px;margin-bottom:64px;flex-wrap:wrap;
  }
  .section-head h2{font-size:clamp(30px,4vw,48px);max-width:14ch;}
  .section-head p{max-width:36ch;color:var(--stone);font-size:15px;}

  /* ---------- SOBRE ---------- */
  #sobre{background:var(--paper-alt);}
  .sobre-grid{
    display:grid;
    grid-template-columns:0.85fr 1fr;
    gap:72px;
    align-items:center;
  }
  .sobre-media{
    aspect-ratio:3/4;
    overflow:hidden;
    background:var(--ink);
  }
  .sobre-media img{width:100%;height:100%;object-fit:cover;}
  .sobre-text h2{font-size:clamp(30px,4vw,48px);margin-bottom:26px;}
  .sobre-text p{color:var(--stone);font-size:16px;max-width:52ch;margin-bottom:18px;}
  .sobre-text p:last-of-type{margin-bottom:40px;}
  .sobre-stats{display:flex;gap:48px;flex-wrap:wrap;}
  .sobre-stats > div{border-top:1px solid var(--line);padding-top:14px;}
  .sobre-stats .mono{
    display:block;font-family:'IBM Plex Mono', monospace;
    font-size:22px;color:var(--sky);margin-bottom:6px;
  }
  .sobre-stats small{font-size:13px;color:var(--stone);}

  @media(max-width:800px){
    .sobre-grid{grid-template-columns:1fr;gap:36px;}
    .sobre-media{aspect-ratio:2/3;}
    .sobre-media img{object-position:center top;}
  }

  /* ---------- PORTFOLIO ---------- */
  #portfolio{background:var(--paper);}
  .grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:2px;
    background:var(--line);
    border:1px solid var(--line);
  }
  .card{
    position:relative;
    background:var(--ink);
    aspect-ratio:4/5;
    overflow:hidden;
    display:block;
  }
  .card img{
    width:100%;height:100%;object-fit:cover;
    transition:transform .7s cubic-bezier(.2,.7,.2,1), filter .5s ease;
    filter:grayscale(28%) brightness(.92);
  }
  .card:hover img{transform:scale(1.06);filter:grayscale(0%) brightness(1);}
  .card.wide{grid-column:1 / -1;aspect-ratio:21/8;}
  @media(max-width:900px){.card.wide{aspect-ratio:16/9;}}
  .card::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg, rgba(16,18,19,0) 45%, rgba(16,18,19,.85) 100%);
  }
  .card-label{
    position:absolute;left:0;right:0;bottom:0;z-index:2;
    padding:22px;color:#fff;
    display:flex;align-items:baseline;gap:12px;
  }
  .card-label .num{font-family:'IBM Plex Mono', monospace;font-size:12px;color:var(--sky);}
  .card-label .name{font-family:'Jost', sans-serif;font-weight:600;font-size:19px;letter-spacing:-.005em;}

  @media(max-width:900px){
    .grid{grid-template-columns:repeat(2,1fr);}
  }
  @media(max-width:560px){
    .grid{grid-template-columns:1fr;}
    .card{aspect-ratio:16/11;}
  }

  /* ---------- CONTACT ---------- */
  #contato{
    background:var(--deep);
    color:#fff;
  }
  #contato .eyebrow{color:var(--sky);}
  #contato h2{color:#fff;font-size:clamp(32px,5vw,58px);max-width:16ch;margin-bottom:22px;}
  #contato .lead{color:rgba(255,255,255,.68);max-width:44ch;font-size:16px;margin-bottom:56px;}
  .contact-grid{
    display:grid;grid-template-columns:1.1fr 1fr;gap:56px;
  }
  .contact-list{display:flex;flex-direction:column;}
  .contact-item{
    padding:22px 0;border-top:1px solid var(--deep-line);
    display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  }
  .contact-item:last-child{border-bottom:1px solid var(--deep-line);}
  .contact-item .label{font-family:'IBM Plex Mono', monospace;font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--stone);}
  .contact-item .value{font-family:'Jost', sans-serif;font-weight:700;font-size:19px;}
  .contact-item a.value{transition:color .2s ease;}
  .contact-item a.value:hover{color:var(--sky);}
  .whatsapp-box{
    border:1px solid var(--deep-line);
    padding:36px;
    display:flex;flex-direction:column;justify-content:space-between;
    gap:22px;
  }
  .whatsapp-box p{color:rgba(255,255,255,.68);font-size:15px;max-width:32ch;}
  .whatsapp-box .btn-solid{
    font-family:'IBM Plex Mono', monospace;
    font-size:13px;letter-spacing:.03em;
    background:var(--sky);color:var(--ink);
    padding:16px 22px;text-align:center;border-radius:2px;font-weight:600;
    transition:.2s;
  }
  .whatsapp-box .btn-solid:hover{background:#fff;}

  @media(max-width:800px){
    .contact-grid{grid-template-columns:1fr;}
  }

  /* ---------- FOOTER ---------- */
  footer{
    background:var(--deep);
    border-top:1px solid var(--deep-line);
    padding:32px 0;
  }
  footer .wrap{
    display:flex;justify-content:space-between;align-items:center;
    flex-wrap:wrap;gap:14px;
  }
  footer .f-brand{display:flex;align-items:center;gap:10px;}
  footer .f-brand img{height:20px;filter:brightness(0) invert(1);opacity:.8;}
  footer .f-social{
    font-family:'IBM Plex Mono', monospace;
    font-size:12px;color:rgba(255,255,255,.6);
    letter-spacing:.03em;
    transition:color .2s ease;
  }
  footer .f-social:hover{color:var(--sky);}
  footer p{
    font-family:'IBM Plex Mono', monospace;
    font-size:12px;color:rgba(255,255,255,.5);
    letter-spacing:.02em;
  }

  /* ---------- MOBILE NAV ---------- */
  @media(max-width:760px){
    nav{
      position:fixed;top:0;right:0;height:100svh;width:min(78vw,320px);
      background:var(--deep);
      flex-direction:column;align-items:flex-start;justify-content:center;
      gap:28px;padding:40px;
      transform:translateX(100%);
      transition:transform .35s ease;
      z-index:99;
    }
    nav.open{transform:translateX(0);}
    nav a:not(.btn){color:#fff;opacity:1;font-size:15px;}
    .menu-toggle{display:block;z-index:101;}
    header.scrolled .menu-toggle span{background: var(--ink);}
    nav.open ~ .menu-toggle span, .menu-toggle.open span{background:#fff !important;}
    section{padding:80px 0;}
    .section-head{margin-bottom:40px;}
    .contact-item .value{font-size:16px;}
  }

  /* ---------- CATEGORY PAGE ---------- */
  .cat-hero{
    padding:168px 0 64px;
    border-bottom:1px solid var(--line);
  }
  .cat-back{
    font-family:'IBM Plex Mono', monospace;
    font-size:12px;letter-spacing:.06em;text-transform:uppercase;
    color:var(--stone);
    display:inline-flex;align-items:center;gap:8px;
    margin-bottom:28px;
    transition:color .2s ease;
  }
  .cat-back:hover{color:var(--sky);}
  .cat-hero h1{font-size:clamp(38px,6vw,72px);margin-top:16px;}
  .cat-hero p{color:var(--stone);font-size:16px;max-width:56ch;margin-top:20px;}
  .cat-grid-section{padding:0 0 140px;}
  .cat-grid{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:48px 32px;
  }
  .proj-card{display:block;}
  .proj-media{
    aspect-ratio:4/3;overflow:hidden;background:var(--ink);margin-bottom:18px;
  }
  .proj-media img{
    width:100%;height:100%;object-fit:cover;
    transition:transform .7s cubic-bezier(.2,.7,.2,1);
  }
  .proj-card:hover .proj-media img{transform:scale(1.045);}
  .proj-name{font-family:'Jost', sans-serif;font-weight:600;font-size:21px;margin-bottom:6px;}
  .proj-meta{font-family:'IBM Plex Mono', monospace;font-size:12px;color:var(--stone);letter-spacing:.03em;}
  .cat-empty{
    grid-column:1/-1;
    padding:48px 0;
    color:var(--stone);
    font-size:15px;
    border-top:1px solid var(--line);
  }
  @media(max-width:760px){
    .cat-hero{padding:130px 0 48px;}
    .cat-grid-section{padding:0 0 96px;}
    .cat-grid{grid-template-columns:1fr;gap:40px;}
  }

  /* ---------- LIGHTBOX ---------- */
  .lightbox{
    position:fixed;inset:0;z-index:200;
    background:rgba(16,18,19,.97);
    display:flex;align-items:center;justify-content:center;
    opacity:0;pointer-events:none;
    transition:opacity .25s ease;
  }
  .lightbox.open{opacity:1;pointer-events:auto;}
  .lb-img{
    max-width:88vw;max-height:82vh;
    object-fit:contain;
    box-shadow:0 20px 60px rgba(0,0,0,.5);
  }
  .lb-close, .lb-prev, .lb-next{
    position:absolute;
    background:none;border:1px solid rgba(255,255,255,.25);
    color:#fff;cursor:pointer;
    border-radius:2px;
    transition:.2s;
  }
  .lb-close:hover, .lb-prev:hover, .lb-next:hover{border-color:var(--sky);color:var(--sky);}
  .lb-close{top:24px;right:24px;width:42px;height:42px;font-size:24px;line-height:1;}
  .lb-prev, .lb-next{top:50%;transform:translateY(-50%);width:48px;height:48px;font-size:18px;}
  .lb-prev{left:20px;}
  .lb-next{right:20px;}
  .lb-count{
    position:absolute;bottom:26px;left:50%;transform:translateX(-50%);
    color:rgba(255,255,255,.6);font-size:12px;letter-spacing:.06em;
  }
  @media(max-width:640px){
    .lb-prev{left:8px;width:38px;height:38px;}
    .lb-next{right:8px;width:38px;height:38px;}
    .lb-close{top:14px;right:14px;}
  }