:root{
    --navy-deep:#0a0f1c;
    --navy:#0f1626;
    --navy-card:#141d31;
    --navy-card-hover:#1a2438;
    --line:#232f47;
    --paper:#f3f1ea;
    --paper-dim:#c9cbd4;
    --slate:#8b93a7;
    --amber:#f6a621;
    --ember:#e8590c;
    --deep-ember:#c7361a;
    --gradient-bolt: linear-gradient(135deg, var(--amber) 0%, var(--ember) 55%, var(--deep-ember) 100%);
    --shadow-glow: 0 0 40px rgba(246,166,33,0.15);
  }

  *{margin:0;padding:0;box-sizing:border-box;}

  html{scroll-behavior:smooth;}

  body{
    background:var(--navy-deep);
    color:var(--paper);
    font-family:'Inter',sans-serif;
    overflow-x:hidden;
  }

  @media (prefers-reduced-motion: reduce){
    *{animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; scroll-behavior:auto !important;}
  }

  h1,h2,h3,h4{
    font-family:'Barlow Condensed', sans-serif;
    font-weight:700;
    letter-spacing:0.01em;
    text-transform:uppercase;
    line-height:1.05;
  }

  .mono{
    font-family:'IBM Plex Mono', monospace;
  }

  a{color:inherit;text-decoration:none;}

  .wrap{
    max-width:1180px;
    margin:0 auto;
    padding:0 32px;
  }

  /* background blueprint grid texture */
  .grid-bg{
    position:absolute; inset:0;
    background-image:
      linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
    background-size:44px 44px;
    pointer-events:none;
  }

  /* ============ NAV ============ */
  header{
    position:fixed; top:0; left:0; right:0; z-index:100;
    background:rgba(10,15,28,0.82);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
  }
  .navbar{
    max-width:1180px; margin:0 auto; padding:14px 32px;
    display:flex; align-items:center; justify-content:space-between;
  }
  .brand{
    display:flex; align-items:center; gap:12px;
  }
  .brand img{
    width:42px; height:42px; border-radius:50%;
    border:1px solid var(--line);
  }
  .brand-text{
    font-family:'Barlow Condensed', sans-serif;
    font-weight:700; font-size:1.15rem; letter-spacing:0.03em;
    text-transform:uppercase; line-height:1;
  }
  .brand-text span{
    display:block; font-size:0.62rem; font-weight:500; letter-spacing:0.18em;
    color:var(--amber); margin-top:3px; font-family:'IBM Plex Mono',monospace; text-transform:uppercase;
  }
  nav ul{
    display:flex; gap:34px; list-style:none;
  }
  nav a{
    font-size:0.85rem; letter-spacing:0.06em; text-transform:uppercase;
    color:var(--paper-dim); font-weight:500;
    transition:color .2s ease;
    position:relative;
  }
  nav a:hover, nav a:focus-visible{color:var(--amber);}
  .nav-cta{
    background:var(--gradient-bolt);
    color:#1a0d02 !important;
    padding:10px 20px;
    border-radius:2px;
    font-weight:700 !important;
    box-shadow:0 4px 20px rgba(232,89,12,0.3);
  }
  .menu-toggle{display:none;}

  /* ============ HERO ============ */
  .img_zap{
    height: 35px;
    width: 35px;
  }
  .hero-logo {
    display: block;
    width: min(310px, 55vw);
    height: min(310px, 55vw);
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--amber);
    box-shadow: 0 0 60px rgba(232,93,4,0.5), 0 0 120px rgba(232,93,4,0.2);
    margin: 0 auto 2.5rem;
    animation: pulse 3s ease-in-out infinite;
  }
  /* Botão flutuante do WhatsApp, fixo no canto inferior direito da tela */
  .botao-zap{
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 999;
  }
  .botao-zap a{
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: #25D366;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 20px rgba(0,0,0,0.35);
    transition: transform .2s ease, box-shadow .2s ease;
  }
  .botao-zap a:hover{
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 10px 26px rgba(0,0,0,0.45);
  }
  .botao-zap .img_zap{
    width: 30px;
    height: 30px;
  }

  .hero{
    position:relative;
    width: 100%;
    min-height:100vh;
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    text-align:center;
    overflow:hidden;
    padding: 120px 2rem 60px;
    margin-top: 68px; /* Dá o espaço do menu fixo para não cobrir o topo da imagem */
    /* O linear-gradient abaixo cria uma "película" escura sobre a imagem para o texto branco ficar fácil de ler */
    background-image: linear-gradient(rgba(10, 10, 10, 0.6), rgba(10, 10, 10, 0.8)), url('imagens/subestacao_de_energia.jpg');
    background-size: cover; /* Faz a imagem cobrir toda a área sem distorcer */
    background-position: center; /* Centraliza a imagem */
    background-repeat: no-repeat;
    }
  .hero-bg{
    position:absolute; inset:0;
    background:url('assets/hero-substation.jpeg') center 30%/cover no-repeat;
    filter:saturate(0.75) brightness(0.4);
  }
  .hero-overlay{
    position:absolute; inset:0;
    background:linear-gradient(180deg, rgba(10,15,28,0.55) 0%, rgba(10,15,28,0.88) 60%, var(--navy-deep) 100%);
  }
  .scanline{
    position:absolute; left:0; right:0; height:5px;
    background:linear-gradient(90deg, transparent, rgba(246,166,33,0.7), transparent);
    animation:scan 7s linear infinite;
    opacity:0.6;
  }
  @keyframes scan{
    0%{top:0%;}
    100%{top:100%;}
  }
  .hero-content{
    position:relative; z-index:2;
    display:flex;
    flex-direction:column;
    align-items:center;
    width:100%;
  }
  .eyebrow{
    display:inline-flex; align-items:center; gap:10px;
    font-family:'IBM Plex Mono', monospace;
    font-size:0.72rem; letter-spacing:0.2em; text-transform:uppercase;
    color:var(--amber);
    border:1px solid rgba(246,166,33,0.35);
    padding:7px 14px; border-radius:2px;
    background:rgba(246,166,33,0.06);
    margin-bottom:28px;
  }
  .eyebrow::before{
    content:'';
    width:7px; height:7px; border-radius:50%;
    background:var(--amber);
    box-shadow:0 0 8px var(--amber);
    animation:pulse 1.8s ease-in-out infinite;
  }
  @keyframes pulse{
    0%,100%{opacity:1;}
    50%{opacity:0.35;}
  }
  .hero h1{
    font-size:clamp(2.6rem, 6.4vw, 5.4rem);
    max-width:920px;
    color:var(--paper);
  }
  .hero h1 em{
    font-style:normal;
    background:var(--gradient-bolt);
    -webkit-background-clip:text;
    background-clip:text;
    color:transparent;
  }
  .hero-sub{
    max-width:560px;
    font-size:1.08rem;
    color:var(--paper-dim);
    margin-top:26px;
    line-height:1.6;
  }
  .hero-actions{
    display:flex; gap:20px; margin-top:40px; flex-wrap:wrap; align-items:center;
  }
  .btn{
    display:inline-flex; align-items:center; gap:10px;
    padding:15px 28px;
    font-size:0.85rem; font-weight:600; letter-spacing:0.05em; text-transform:uppercase;
    border-radius:2px;
    transition:transform .2s ease, box-shadow .2s ease, background .2s ease;
    font-family:'Inter',sans-serif;
  }
  .btn-primary{
    background:var(--gradient-bolt);
    color:#1a0d02;
    box-shadow:0 6px 24px rgba(232,89,12,0.35);
    border-radius: 15px;
  }
  .btn-segundo{
    border-radius: 15px;
  }
  .btn-primary:hover{transform:translateY(-2px); box-shadow:0 10px 30px rgba(232,89,12,0.45);}
  .btn-ghost{
    border:1px solid var(--line);
    color:var(--paper);
    background:rgba(255,255,255,0.02);
  }
  .btn-ghost:hover{border-color:var(--amber); color:var(--amber); transform:translateY(-2px);}

  /* Mini texto lateral dos botões do hero */
  .hero-btn-note {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.72rem;
    color: var(--slate);
    max-width: 240px;
    text-align: left;
    line-height: 1.4;
    letter-spacing: 0.03em;
    border-left: 2px solid var(--amber);
    padding-left: 14px;
    text-transform: uppercase;
  }

  /* meter strip - signature element */
  .meter-strip{
    position:relative; z-index:2;
    display:grid;
    grid-template-columns:repeat(4,1fr);
    border:1px solid var(--line);
    background:rgba(15,22,38,0.7);
    backdrop-filter:blur(6px);
    max-width:920px;
    width:100%;
    margin-top:44px;
    text-align:left;
  }
  .meter{
    padding:18px 22px;
    border-right:1px solid var(--line);
    position:relative;
  }
  .meter:last-child{border-right:none;}
  .meter-label{
    font-family:'IBM Plex Mono',monospace;
    font-size:0.62rem; letter-spacing:0.12em; text-transform:uppercase;
    color:var(--slate);
    margin-bottom:6px;
  }
  .meter-value{
    font-family:'IBM Plex Mono',monospace;
    font-size:1.5rem; font-weight:600;
    color:var(--amber);
    letter-spacing:0.02em;
  }
  .meter-value .unit{
    font-size:0.85rem; color:var(--paper-dim); font-weight:400; margin-left:2px;
  }

  /* ============ SECTION SHELL ============ */
  section{
    position:relative;
    padding:120px 0;
  }
  .section-head{
    max-width:640px;
    margin-bottom:64px;
  }
  .tag{
    font-family:'IBM Plex Mono',monospace;
    font-size:0.72rem; letter-spacing:0.2em; text-transform:uppercase;
    color:var(--amber);
    display:flex; align-items:center; gap:10px;
    margin-bottom:18px;
  }
  .tag::before{
    content:'';
    width:24px; height:1px;
    background:var(--amber);
  }
  .section-head h2{
    font-size:clamp(2rem, 4vw, 3.2rem);
    color:var(--paper);
  }
  .section-head p{
    color:var(--paper-dim);
    margin-top:18px;
    font-size:1.02rem;
    line-height:1.65;
  }

  /* ============ SOBRE ============ */
  .sobre{
    background:var(--navy);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
  }
  .sobre-grid{
    display:grid;
    grid-template-columns:1.1fr 0.9fr;
    gap:64px;
    align-items:center;
  }
  .sobre-copy p{
    color:var(--paper-dim);
    line-height:1.75;
    margin-bottom:20px;
    font-size:1.02rem;
  }
  .sobre-copy strong{color:var(--paper); font-weight:600;}
  .sobre-media{
    position:relative;
  }
  .sobre-media img{
    width:100%; height:520px; object-fit:cover;
    border:1px solid var(--line);
    filter:saturate(0.9);

  }
  .sobre-media .tag-plate{
    position:absolute; bottom:-1px; left:-1px;
    background:var(--navy-deep);
    border:1px solid var(--amber);
    padding:14px 20px;
    font-family:'IBM Plex Mono',monospace;
    font-size:0.72rem;
    letter-spacing:0.08em;
    color:var(--amber);
    text-transform:uppercase;
  }

  /* ============ SERVIÇOS ============ */
  .servicos-grid{
    display:grid;
    grid-template-columns:repeat(3, 1fr);
    gap:1px;
    background:var(--line);
    border:1px solid var(--line);
  }
  .service-card{
    background:var(--navy-card);
    padding:36px 30px;
    transition:background .25s ease, transform .25s ease;
    position:relative;
  }
  .service-card:hover{
    background:var(--navy-card-hover);
  }
  .service-tagnum{
    font-family:'IBM Plex Mono',monospace;
    font-size:0.68rem;
    color:var(--slate);
    letter-spacing:0.1em;
    display:block;
    margin-bottom:16px;
  }
  .service-card h3{
    font-size:1.28rem;
    color:var(--paper);
    text-transform:none;
    font-weight:600;
    letter-spacing:0;
    margin-bottom:10px;
    line-height:1.25;
  }
  .service-card p{
    font-size:0.9rem;
    color:var(--slate);
    line-height:1.55;
  }
  .service-card.featured{
    background:linear-gradient(160deg, rgba(246,166,33,0.08), rgba(232,89,12,0.03));
  }
  .service-card.featured .service-tagnum{color:var(--amber);}

  .servicos-photos{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:16px;
    margin-top:16px;
  }
  .servicos-photos figure{
    position:relative;
    overflow:hidden;
    border:1px solid var(--line);
  }
  .servicos-photos img{
    width:100%; height:200px; top: 200px; object-fit:cover;
    display:block;
    transition:transform .5s ease;
    filter:saturate(0.9) brightness(0.92);
  }
  .servicos-photos figure:hover img{transform:scale(1.06);}
  .servicos-photos figcaption{
    position:absolute; left:0; right:0; bottom:0;
    padding:12px 16px;
    background:linear-gradient(0deg, rgba(10,15,28,0.92), transparent);
    font-family:'IBM Plex Mono',monospace;
    font-size:0.68rem;
    letter-spacing:0.06em;
    text-transform:uppercase;
    color:var(--paper-dim);
  }

  /* ============ PROJETOS ============ */
  .projetos{
    background:var(--navy);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
  }
  .project-row{
    display:grid;
    grid-template-columns:0.85fr 1.15fr;
    gap:48px;
    align-items:center;
    padding:56px 0;
    border-bottom:1px solid var(--line);
  }
  .project-row:last-child{border-bottom:none;}
  .project-row:nth-child(even){
    grid-template-columns:1.15fr 0.85fr;
  }
  .project-row:nth-child(even) .project-info{order:2;}
  .project-info .tag{margin-bottom:14px;}
  .project-info h3{
    font-size:1.9rem;
    color:var(--paper);
    margin-bottom:14px;
  }
  .project-info p{
    color:var(--paper-dim);
    line-height:1.7;
    font-size:0.98rem;
  }
  .project-photos{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:14px;
  }
  .project-photos img{
    width:100%; height:230px; object-fit:cover;
    border:1px solid var(--line);
    filter:saturate(0.9);
  }

  /* ============ GALERIA ============ */
.caixa-imagens {
  width: 100%;
  max-width: clamp(600px, 90vw, 600Px); /* Quadrado bem maior que antes */
  aspect-ratio: 1 / 1;
  margin: 0 auto;
  overflow: hidden;
  position: relative;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: var(--navy-card);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4);
}

.imagens_slides {
  position: relative;
  width: 100%;
  height: 100%;
}

/* Mostra 1 foto por vez dentro do quadrado, com transição suave */
.imagens_slides img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 1s ease;
}

.imagens_slides img.active {
  opacity: 1;
  z-index: 2;
}

/* Fotos em pé (retrato) são deitadas automaticamente. Como o quadro é
   um quadrado perfeito, girar 90° mantém a foto ocupando o quadro
   inteiro, sem cortes nem sobras. */
.imagens_slides img.is-portrait {
  transform: rotate(90deg);
}

/* Setas de navegação manual */
.galeria-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 15, 28, 0.55);
  border: 1px solid rgba(243, 241, 234, 0.25);
  color: var(--paper);
  border-radius: 50%;
  cursor: pointer;
  transition: background .2s ease, border-color .2s ease, color .2s ease;
}
.galeria-nav:hover {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--navy-deep);
}
.galeria-prev { left: 16px; }
.galeria-next { right: 16px; }

/* Indicadores (dots) */
.galeria-dots {
  position: absolute;
  bottom: 16px;
  left: 0;
  right: 0;
  z-index: 3;
  display: flex;
  justify-content: center;
  gap: 8px;
}
.galeria-dots button {
  width: 20px;
  height: 3px;
  padding: 0;
  border: none;
  background: rgba(243, 241, 234, 0.35);
  cursor: pointer;
  transition: background .25s ease, width .25s ease;
}
.galeria-dots button.active {
  background: var(--amber);
  width: 32px;
}

@media (max-width: 640px) {
  .galeria-nav { width: 34px; height: 34px; }
  .galeria-prev { left: 10px; }
  .galeria-next { right: 10px; }
}

  /* ============ CONTATO ============ */
  .contato{
    position:relative;
    background:var(--navy-deep);
    border-top:1px solid var(--line);
  }
  .contato-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:64px;
  }
  .contato-list{
    display:flex; flex-direction:column; gap:0;
    margin-top:32px;
  }
  .contato-item{
    display:flex; align-items:center; gap:18px;
    padding:20px 0;
    border-bottom:1px solid var(--line);
  }
  .contato-item:first-child{border-top:1px solid var(--line);}
  .contato-icon{
    width:38px; height:38px;
    flex-shrink:0;
    border:1px solid var(--amber);
    border-radius:50%;
    display:flex; align-items:center; justify-content:center;
    color:var(--amber);
  }
  .contato-item-text .label{
    font-family:'IBM Plex Mono',monospace;
    font-size:0.65rem; letter-spacing:0.14em; text-transform:uppercase;
    color:var(--slate);
    margin-bottom:4px;
  }
  .contato-item-text a, .contato-item-text span{
    font-size:1.02rem; color:var(--paper); font-weight:500;
  }
  .contato-item-text a:hover{color:var(--amber);}
  .contato-card{
    background:var(--navy-card);
    border:1px solid var(--line);
    padding:44px;
    display:flex; flex-direction:column; justify-content:center;
  }
  .contato-card h3{
    font-size:1.7rem; color:var(--paper); margin-bottom:16px;
  }
  .contato-card p{
    color:var(--paper-dim);
    line-height:1.7;
    margin-bottom:32px;
  }

  footer{
    border-top:1px solid var(--line);
    padding:32px 0;
    display:flex; align-items:center; justify-content:space-between;
    flex-wrap:wrap; gap:12px;
  }
  footer p{
    font-family:'IBM Plex Mono',monospace;
    font-size:0.72rem;
    color:var(--slate);
    letter-spacing:0.04em;
  }

  /* scroll reveal */
  .reveal{
    opacity:0;
    transform:translateY(24px);
    transition:opacity .7s ease, transform .7s ease;
  }
  .reveal.in{
    opacity:1;
    transform:translateY(0);
  }

  /* ============ RESPONSIVE ============ */
  @media (max-width:900px){
    .sobre-grid, .contato-grid{grid-template-columns:1fr;}
    .sobre-media img{height:340px;}
    .servicos-grid{grid-template-columns:repeat(2,1fr);}
    .servicos-photos{grid-template-columns:repeat(2,1fr);}
    .project-row, .project-row:nth-child(even){grid-template-columns:1fr;}
    .project-row:nth-child(even) .project-info{order:0;}
    .meter-strip{grid-template-columns:repeat(2,1fr);}
  }
  @media (max-width:640px){
    nav ul{display:none;}
    .menu-toggle{display:block;}
    .servicos-grid{grid-template-columns:1fr;}
    .servicos-photos{grid-template-columns:1fr;}
    .wrap{padding:0 20px;}
    section{padding:80px 0;}
    .project-photos{grid-template-columns:1fr;}
    .contato-card{padding:28px;}
    .hero-btn-note {text-align: center; border-left: none; border-top: 2px solid var(--amber); padding-left: 0; padding-top: 10px; max-width: 100%;}
    .botao-zap a{width: 52px; height: 52px;}
    .botao-zap{bottom: 16px; right: 16px;}
  }