/* =========================================================
   NEXUS TECNOLOGIA — estilos globais
   Paleta e tipografia herdadas da ficha técnica do Matrix
   Clean 1.0, para manter uma identidade única e coerente
   entre o site e os materiais técnicos da empresa.
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root{
  --bg: #0A0E14;
  --panel: #121826;
  --panel-alt: #171F30;
  --line: #232D42;
  --text: #EAF0FF;
  --muted: #8895B3;
  --amber: #FFB547;
  --blue: #4C8DFF;

  --mono: 'IBM Plex Mono', monospace;
  --display: 'Space Grotesk', 'Arial Narrow', sans-serif;
  --body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --header-h: 76px;
}

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

html{ scroll-behavior: smooth; scroll-padding-top: var(--header-h); }

body{
  background: var(--bg);
  color: var(--text);
  font-family: var(--body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img{ max-width: 100%; display: block; }

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

.wrap{
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------- Rail scroll indicator ---------- */
.rail{
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--line);
  z-index: 200;
}
.rail-fill{
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--blue), var(--amber));
  transition: width 0.1s linear;
}

/* ---------- Brandmark ---------- */
.brandmark{
  display: flex;
  align-items: center;
  gap: 10px;
}
.brand-logo{
  width: 32px; height: 32px;
  border-radius: 6px;
  object-fit: cover;
}
.brandmark span{
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--text);
}
.brandmark b{ color: var(--amber); font-weight: 600; }

/* ---------- Header ---------- */
.site-header{
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(10,14,20,0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.main-nav{
  display: flex;
  align-items: center;
  gap: 32px;
}
.main-nav a{
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 0.2s ease;
}
.main-nav a:hover{ color: var(--text); }
.nav-cta{
  color: var(--bg) !important;
  background: var(--amber);
  padding: 9px 16px;
  border-radius: 4px;
  font-weight: 600;
}
.nav-cta:hover{ color: var(--bg) !important; opacity: 0.9; }

.nav-toggle{
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px; height: 36px;
  background: none;
  border: none;
  cursor: pointer;
}
.nav-toggle span{
  width: 100%;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
}

/* ---------- Eyebrow / section head ---------- */
.eyebrow{
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 18px;
}
.eyebrow .dot{
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 10px var(--amber);
  flex-shrink: 0;
}
.eyebrow-mono{
  display: inline-block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--blue);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.section-head{
  margin-bottom: 48px;
}
.section-head h2{
  font-family: var(--display);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.15;
}
.section-sub{
  margin-top: 14px;
  max-width: 620px;
  color: var(--muted);
  font-size: 15.5px;
}

/* ---------- Buttons ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 26px;
  font-family: var(--body);
  font-weight: 600;
  font-size: 14.5px;
  border-radius: 4px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.15s ease, background 0.15s ease;
}
.btn:hover{ transform: translateY(-1px); }
.btn-primary{
  background: var(--amber);
  color: var(--bg);
}
.btn-primary:hover{ opacity: 0.92; }
.btn-ghost{
  background: transparent;
  color: var(--text);
  border-color: var(--line);
}
.btn-ghost:hover{ border-color: var(--blue); color: var(--blue); }
.btn-block{ width: 100%; }

/* ---------- Hero ---------- */
.hero{
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: #000;
}
.hero-media{
  position: absolute; inset: 0;
}
.hero-media img,
.hero-video{
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.55;
}
.hero-media::after{ content: none; }
.hero::before{
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(10,14,20,0.25) 0%, rgba(10,14,20,0.6) 55%, rgba(10,14,20,0.98) 100%);
}
.hero-content{
  position: relative;
  z-index: 2;
  padding: 60px 32px 72px;
}
.hero h1{
  font-family: var(--display);
  font-size: clamp(38px, 6vw, 68px);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.01em;
  color: #fff;
  text-shadow: 0 2px 24px rgba(0,0,0,0.4);
  max-width: 780px;
}
.hero-sub{
  margin-top: 20px;
  font-size: 17px;
  color: #C8D2E8;
  max-width: 560px;
}
.hero-actions{
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

/* ---------- Sections ---------- */
.section{
  padding: 88px 0;
  border-bottom: 1px solid var(--line);
}
.section-alt{ background: var(--panel); }

/* ---------- Empresa ---------- */
.lead-text{
  font-size: 18px;
  color: #C8D2E8;
  max-width: 780px;
  margin-bottom: 48px;
}
.lead-text b{ color: var(--text); }

.pillars{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.pillar-card{
  background: var(--bg);
  padding: 32px 28px;
}
.pillar-num{
  font-family: var(--mono);
  font-size: 12px;
  color: var(--amber);
  letter-spacing: 0.08em;
}
.pillar-card h3{
  font-family: var(--display);
  font-size: 19px;
  font-weight: 600;
  margin: 14px 0 10px;
}
.pillar-card p{
  color: var(--muted);
  font-size: 14.5px;
}

/* ---------- Produto: stat bar ---------- */
.stat-bar{
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border: 1px solid var(--line);
  margin-bottom: 56px;
}
.stat{
  padding: 22px 18px;
  border-right: 1px solid var(--line);
  background: var(--bg);
}
.stat:last-child{ border-right: none; }
.stat .num{
  font-family: var(--mono);
  font-size: 22px;
  font-weight: 600;
  color: var(--amber);
  letter-spacing: -0.01em;
}
.stat .lbl{
  margin-top: 6px;
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---------- Produto: destaque com imagem ---------- */
.product-feature{
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 56px;
}

/* ---------- Galeria de fotos (carrossel) ----------
   Correção definitiva do "gap branco embaixo da foto":
   o container ".gallery" tem uma proporção fixa (aspect-ratio) e
   "overflow: hidden", e cada imagem usa "object-fit: cover" para
   preencher 100% do espaço, não importa o tamanho original da foto.
   Não existe mais dependência do formato/proporção do arquivo.
------------------------------------------------------- */
.gallery{
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #000;
  touch-action: pan-y;
}
.gallery-track{
  display: flex;
  height: 100%;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.gallery-slide{
  min-width: 100%;
  height: 100%;
  flex-shrink: 0;
}
.gallery-slide img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  user-select: none;
  -webkit-user-drag: none;
}

.gallery-arrow{
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px; height: 40px;
  border-radius: 50%;
  background: rgba(10,14,20,0.65);
  border: 1px solid rgba(255,255,255,0.18);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  backdrop-filter: blur(4px);
  transition: background 0.2s ease, border-color 0.2s ease;
  z-index: 2;
}
.gallery-arrow:hover{
  background: rgba(76,141,255,0.85);
  border-color: var(--blue);
}
.gallery-prev{ left: 14px; }
.gallery-next{ right: 14px; }

.gallery-dots{
  position: absolute;
  left: 0; right: 0;
  bottom: 14px;
  display: flex;
  justify-content: center;
  gap: 7px;
  z-index: 2;
}
.gallery-dots button{
  width: 7px; height: 7px;
  border-radius: 50%;
  border: none;
  background: rgba(255,255,255,0.4);
  cursor: pointer;
  padding: 0;
  transition: background 0.2s ease, transform 0.2s ease;
}
.gallery-dots button.active{
  background: var(--amber);
  transform: scale(1.3);
}

.product-feature-copy h3{
  font-family: var(--display);
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 14px;
}
.product-feature-copy p{
  color: var(--muted);
  margin-bottom: 20px;
}
.check-list{
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.check-list li{
  position: relative;
  padding-left: 26px;
  font-size: 14.5px;
  color: var(--text);
}
.check-list li::before{
  content: "";
  position: absolute;
  left: 0; top: 6px;
  width: 14px; height: 14px;
  border-radius: 3px;
  background: rgba(76,141,255,0.12);
  border: 1px solid var(--blue);
}
.check-list li::after{
  content: "";
  position: absolute;
  left: 4px; top: 9px;
  width: 6px; height: 3px;
  border-left: 2px solid var(--blue);
  border-bottom: 2px solid var(--blue);
  transform: rotate(-45deg);
}

/* ---------- Produto: cards técnicos ---------- */
.card-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-bottom: 40px;
}
.tech-card{
  background: var(--bg);
  padding: 26px 24px;
}
.section-alt .tech-card{ background: var(--panel); }
.tech-card-title{
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 16px;
}
.spec-row{
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  border-top: 1px solid var(--line);
  font-size: 13.5px;
}
.spec-row:first-of-type{ border-top: none; }
.spec-row span:first-child{ color: var(--muted); }
.spec-row span:last-child{
  font-family: var(--mono);
  font-size: 12.5px;
  text-align: right;
}

/* ---------- Produto: vídeo demonstrativo ---------- */
.product-video{
  margin-bottom: 40px;
}
.demo-video{
  width: 100%;
  max-height: 560px;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #000;
  display: block;
}
.video-caption{
  margin-top: 12px;
  font-size: 13px;
  color: var(--muted);
  text-align: center;
}

.product-cta{
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.fine-print{
  margin-top: 18px;
  font-size: 12px;
  color: var(--muted);
}

/* ---------- Diferenciais ---------- */
.diff-grid{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.diff-card{
  background: var(--bg);
  padding: 28px 22px;
}
.diff-card h3{
  font-family: var(--display);
  font-size: 16.5px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--amber);
}
.diff-card p{
  font-size: 13.5px;
  color: var(--muted);
}

/* ---------- Contato ---------- */
.section-contact{ border-bottom: none; background: var(--panel); }
.contact-wrap{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.contact-info{
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.contact-line{
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.contact-label{
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.contact-form{
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.form-note{
  font-size: 12.5px;
  color: var(--muted);
  background: var(--panel-alt);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 12px 14px;
}
.contact-form label{
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.contact-form input,
.contact-form textarea{
  font-family: var(--body);
  font-size: 14.5px;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 12px 14px;
  resize: vertical;
}
.contact-form input:focus,
.contact-form textarea:focus{
  outline: none;
  border-color: var(--blue);
}

/* ---------- Footer ---------- */
.site-footer{
  padding: 48px 0;
  background: var(--bg);
}
.footer-inner{
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}
.footer-tag{
  color: var(--muted);
  font-size: 13.5px;
  max-width: 420px;
}
.footer-legal{
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--muted);
}

/* ---------- Focus states (acessibilidade) ---------- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible{
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  .rail-fill{ transition: none; }
  .btn:hover{ transform: none; }
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 900px){
  .product-feature{
    grid-template-columns: 1fr;
  }
  .diff-grid{
    grid-template-columns: repeat(2, 1fr);
  }
  .contact-wrap{
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 720px){
  .wrap{ padding: 0 20px; }

  .main-nav{
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 20px 20px;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.25s ease, opacity 0.25s ease;
  }
  .main-nav.open{
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .main-nav a{
    width: 100%;
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
  }
  .main-nav a:last-child{ border-bottom: none; }
  .nav-cta{
    margin-top: 10px;
    text-align: center;
  }
  .nav-toggle{ display: flex; }

  .hero{ min-height: 540px; }
  .hero-content{ padding: 40px 20px 48px; }

  .section{ padding: 64px 0; }

  .pillars{ grid-template-columns: 1fr; }
  .stat-bar{ grid-template-columns: repeat(2, 1fr); }
  .stat{ border-bottom: 1px solid var(--line); }
  .card-grid{ grid-template-columns: 1fr; }
  .diff-grid{ grid-template-columns: 1fr; }
}