/* ==========================================================================
   Arcus Engenharia — institutional website stylesheet
   Direção visual: corporativo sóbrio / técnico. Sem gradientes, sem cantos
   muito arredondados, sem ícone-em-caixinha colorida, sem animação de
   scroll — paleta quente (marrom-café + papel creme) com acento vívido em
   terracota/ferrugem.
   ========================================================================== */

:root {
  --ink: #2a1f17;
  --ink-2: #3a2b1f;
  --ink-3: #4a3829;
  --steel: #5c4b3a;
  --steel-2: #9c8a73;
  --line: #e4d9c8;
  --line-dark: rgba(255,255,255,0.14);
  --paper: #f8f1e4;
  --paper-2: #f0e6d3;
  --white: #ffffff;
  --rust: #c8481e;
  --rust-dark: #a03816;
  --rust-tint: #f8ddc8;

  --font-head: 'Archivo', 'Arial Narrow', Arial, sans-serif;
  --font-body: 'IBM Plex Sans', Arial, sans-serif;

  --container: 1180px;
  --radius: 2px;
  --transition: 150ms ease;
}

* { box-sizing: border-box; }

html, body { overflow-x: hidden; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--steel);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

h1, h2, h3, h4 {
  font-family: var(--font-head);
  color: var(--ink);
  line-height: 1.15;
  margin: 0 0 0.6em;
  font-weight: 700;
  letter-spacing: -0.01em;
}

p { margin: 0 0 1em; color: var(--steel); }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* Rótulo de seção: sem pílula, sem gradiente — apenas um traço + versalete,
   como uma legenda de desenho técnico. */
.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-head);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--rust);
  margin-bottom: 16px;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--rust);
  display: inline-block;
  flex-shrink: 0;
}

section { padding: 84px 0; }

.section-fog { background: var(--paper); }
.section-navy {
  background: var(--ink);
  color: var(--white);
}
.section-navy h2, .section-navy h3 { color: var(--white); }
.section-navy p { color: var(--steel-2); }

.section-head {
  max-width: 680px;
  margin: 0 0 48px;
}
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head.center .eyebrow { justify-content: center; }

.section-head h2 { font-size: clamp(1.6rem, 2.8vw, 2.2rem); }
.section-head p { font-size: 1.02rem; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: var(--radius);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.86rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.btn-amber {
  background: var(--rust);
  color: var(--white);
}
.btn-amber:hover { background: var(--rust-dark); }

.btn-outline {
  background: transparent;
  border-color: rgba(255,255,255,0.5);
  color: var(--white);
}
.btn-outline:hover { border-color: var(--white); background: rgba(255,255,255,0.08); }

.btn-outline-dark {
  background: transparent;
  border-color: var(--ink);
  color: var(--ink);
}
.btn-outline-dark:hover { background: var(--ink); color: var(--white); }

.btn-block { width: 100%; }

/* ---------- Utility bar ---------- */
.utility-bar {
  background: var(--ink);
  color: var(--steel-2);
  font-size: 0.78rem;
  border-bottom: 1px solid var(--line-dark);
}
.utility-bar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 38px;
}
.utility-bar-info { display: flex; align-items: center; gap: 22px; overflow: hidden; }
.utility-bar-info a { color: var(--steel-2); transition: color var(--transition); }
.utility-bar-info a:hover { color: var(--white); }
.ub-item { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
.utility-bar-info svg { width: 13px; height: 13px; flex-shrink: 0; }
.utility-bar-tag {
  font-family: var(--font-head);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.72rem;
  color: var(--steel-2);
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 500;
  background: var(--white);
  border-bottom: 1px solid var(--line);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 82px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-head);
  color: var(--ink);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.01em;
}

.brand-mark {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.brand small {
  display: block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.64rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--steel-2);
  margin-top: 2px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.main-nav a {
  font-family: var(--font-head);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--steel);
  padding: 8px 2px;
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--ink);
  border-color: var(--rust);
}

/* CTA extra dentro do menu, visível só no menu mobile aberto */
.main-nav .nav-cta { display: none; }

.header-cta {
  display: flex;
  align-items: center;
  gap: 18px;
}

.header-phone {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--steel);
  font-size: 0.88rem;
  font-weight: 600;
  font-family: var(--font-head);
}
.header-phone svg { width: 16px; height: 16px; flex-shrink: 0; color: var(--rust); }

.nav-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
}
.nav-toggle span, .nav-toggle::before, .nav-toggle::after {
  content: "";
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  position: relative;
  transition: all var(--transition);
}
.nav-toggle::before { margin-bottom: 6px; }
.nav-toggle::after { margin-top: 6px; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--white);
  padding: 96px 0 0;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  opacity: 0.07;
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: end;
  padding-bottom: 64px;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--rust);
  font-family: var(--font-head);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding-left: 14px;
  border-left: 2px solid var(--rust);
  margin-bottom: 26px;
}

.hero h1 {
  color: var(--white);
  font-size: clamp(2rem, 3.8vw, 3.1rem);
  margin-bottom: 22px;
  max-width: 15ch;
}

.hero p.lead {
  color: var(--steel-2);
  font-size: 1.08rem;
  max-width: 520px;
  margin-bottom: 34px;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 0; }

.hero-stats {
  display: flex;
  border-top: 1px solid var(--line-dark);
  margin-top: 56px;
}
.hero-stats div {
  flex: 1;
  padding: 22px 24px 22px 0;
  border-right: 1px solid var(--line-dark);
}
.hero-stats div:last-child { border-right: none; }
.hero-stats div strong {
  display: block;
  font-family: var(--font-head);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 4px;
}
.hero-stats div span {
  display: block;
  font-size: 0.82rem;
  color: var(--steel-2);
}

.hero-art {
  position: relative;
  padding-bottom: 24px;
}

/* ---------- Page hero (inner pages) ---------- */
.page-hero {
  background: var(--ink);
  color: var(--white);
  padding: 68px 0 56px;
  position: relative;
  overflow: hidden;
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { color: var(--white); font-size: clamp(1.7rem, 3vw, 2.3rem); max-width: 22ch; }
.breadcrumb {
  display: flex;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--steel-2);
  margin-bottom: 20px;
  font-family: var(--font-head);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.breadcrumb a:hover { color: var(--white); }

/* ---------- Cards ---------- */
.grid {
  display: grid;
  gap: 28px;
}
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Grade "planilha técnica" com linhas finas entre células — só para grades
   de cards (serviços, valores), não para layouts de conteúdo em 2 colunas. */
.card-grid {
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.card {
  background: var(--white);
  padding: 36px 30px;
  counter-increment: card;
  position: relative;
}

.card-icon {
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  position: relative;
}
.card-icon svg { width: 20px; height: 20px; color: var(--rust); }
.card-icon::after {
  content: "0" counter(card);
  position: absolute;
  top: -1px;
  right: -46px;
  font-family: var(--font-head);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--steel-2);
  letter-spacing: 0.05em;
}

.card h3 { font-size: 1.08rem; margin-bottom: 10px; }
.card p { margin-bottom: 14px; font-size: 0.94rem; }
.card-link {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 2px;
}
.card-link svg { width: 12px; height: 12px; transition: transform var(--transition); }
.card-link:hover svg { transform: translateX(3px); }

.grid-3, .grid-4 { counter-reset: card; }

/* ---------- Differentials / icon rows ---------- */
.feature-row {
  display: flex;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line-dark);
}
.feature-row:last-child { border-bottom: none; }
.feature-row .card-icon { border-color: var(--line-dark); flex-shrink: 0; }
.feature-row .card-icon::after { display: none; }
.feature-row h3 { font-size: 1rem; margin-bottom: 6px; }
.feature-row p { margin-bottom: 0; font-size: 0.92rem; }

.section-navy .feature-row { border-color: var(--line-dark); }

/* ---------- CTA banner ---------- */
.cta-banner {
  background: var(--ink);
  padding: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  color: var(--white);
  flex-wrap: wrap;
  border-left: 4px solid var(--rust);
}
.cta-banner h2 { color: var(--white); margin-bottom: 8px; font-size: 1.5rem; }
.cta-banner p { color: var(--steel-2); margin-bottom: 0; }
.cta-banner-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- Process steps ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  counter-reset: step;
  background: var(--line);
  border: 1px solid var(--line);
}
.step {
  position: relative;
  padding: 30px 26px 26px;
  background: var(--white);
}
.step::before {
  counter-increment: step;
  content: "0" counter(step);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.6rem;
  color: var(--rust);
  display: block;
  margin-bottom: 16px;
}
.step h3 { font-size: 0.98rem; margin-bottom: 8px; }
.step p { font-size: 0.9rem; margin-bottom: 0; }

/* ---------- Values / mission cards ---------- */
.value-card {
  text-align: left;
  padding: 36px 30px;
}
.value-card .card-icon { margin-left: 0; margin-right: 0; }
.value-card .card-icon::after { display: none; }

/* ---------- Portfolio placeholder ---------- */
.portfolio-card {
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--white);
}
.portfolio-visual {
  aspect-ratio: 4 / 3;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.portfolio-visual svg { width: 100%; height: 100%; }
.portfolio-tag {
  position: absolute;
  top: 0;
  left: 0;
  background: var(--ink);
  color: var(--rust);
  font-family: var(--font-head);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 7px 14px;
  z-index: 2;
}
.portfolio-body { padding: 22px 24px 26px; border-top: 1px solid var(--line); }
.portfolio-body h3 { font-size: 1.02rem; margin-bottom: 6px; }
.portfolio-body p { font-size: 0.9rem; margin-bottom: 0; }

.notice-banner {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 3px solid var(--rust);
  padding: 20px 24px;
  margin-top: 40px;
}
.notice-banner svg { width: 20px; height: 20px; color: var(--rust); flex-shrink: 0; margin-top: 2px; }
.notice-banner p { margin-bottom: 0; color: var(--ink); font-size: 0.92rem; }
.notice-banner strong { color: var(--ink); }

/* ---------- Contact page ---------- */
.contact-wrap {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  align-items: stretch;
}

.contact-card {
  background: var(--ink);
  color: var(--white);
  padding: 40px 34px;
}
.contact-card h3 { color: var(--white); }
.contact-item {
  display: flex;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-dark);
}
.contact-item:last-of-type { border-bottom: none; }
.contact-item .card-icon { width: 40px; height: 40px; border-color: var(--line-dark); flex-shrink: 0; }
.contact-item .card-icon::after { display: none; }
.contact-item .card-icon svg { width: 18px; height: 18px; color: var(--rust); }
.contact-item strong { display: block; font-family: var(--font-head); font-size: 0.74rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--steel-2); margin-bottom: 4px; }
.contact-item span, .contact-item a { color: var(--white); font-size: 0.96rem; }
.contact-item a:hover { color: var(--rust); }

.social-row { display: flex; gap: 10px; margin-top: 28px; }
.social-row a {
  width: 40px; height: 40px;
  border: 1px solid var(--line-dark);
  display: flex; align-items: center; justify-content: center;
  transition: background var(--transition), border-color var(--transition);
}
.social-row a:hover { background: var(--rust); border-color: var(--rust); color: var(--white); }
.social-row svg { width: 17px; height: 17px; }

.form-card {
  background: var(--white);
  padding: 40px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 18px; }
.field { display: flex; flex-direction: column; gap: 8px; margin-bottom: 18px; }
.field label { font-family: var(--font-head); font-size: 0.8rem; font-weight: 700; letter-spacing: 0.02em; color: var(--ink); }
.field input, .field select, .field textarea {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 13px 14px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--ink);
  background: var(--paper);
  transition: border-color var(--transition), background var(--transition);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--rust);
  background: var(--white);
}
.field textarea { resize: vertical; min-height: 130px; }
.form-note { font-size: 0.8rem; color: var(--steel-2); margin-top: 14px; }
.form-success {
  display: none;
  background: #eef3ec;
  border: 1px solid #a9c6a1;
  color: #35552c;
  padding: 14px 18px;
  border-radius: var(--radius);
  font-size: 0.92rem;
  margin-bottom: 18px;
}
.form-success.visible { display: block; }

.map-frame {
  overflow: hidden;
  border: 1px solid var(--line);
  margin-top: 32px;
  filter: grayscale(0.35) contrast(1.02);
}
.map-frame iframe { width: 100%; height: 340px; border: 0; display: block; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--ink);
  color: var(--steel-2);
  padding: 60px 0 26px;
  border-top: 3px solid var(--rust);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line-dark);
}
.footer-brand .brand { margin-bottom: 16px; color: var(--white); }
.footer-brand p { color: var(--steel-2); font-size: 0.92rem; max-width: 320px; }
.footer-col h4 {
  color: var(--white);
  font-family: var(--font-head);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.footer-col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 12px; }
.footer-col a { font-size: 0.92rem; color: var(--steel-2); transition: color var(--transition); }
.footer-col a:hover { color: var(--rust); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  font-size: 0.8rem;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom a:hover { color: var(--rust); }

/* ---------- WhatsApp floating button ---------- */
.whatsapp-fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 52px;
  height: 52px;
  border-radius: var(--radius);
  background: #1f7a4d;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(0,0,0,0.25);
  z-index: 600;
  transition: background var(--transition);
}
.whatsapp-fab:hover { background: #185f3c; }
.whatsapp-fab svg { width: 24px; height: 24px; color: white; }

/* Sem animação de entrada por scroll — o conteúdo aparece direto. */
.reveal { opacity: 1; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero .container { grid-template-columns: 1fr; }
  .hero-art { max-width: 340px; margin: 32px auto 0; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-wrap { grid-template-columns: 1fr; }
}

/* O menu de navegação completo (todos os links + telefone + botão) só cabe
   confortavelmente a partir de ~1140px. Abaixo disso, vira menu hambúrguer —
   esse é o breakpoint que evita o cabeçalho "quebrar" (logo em duas linhas,
   itens espremidos, botão cortado) em telas de notebook comuns (1024–1150px). */
@media (max-width: 1140px) {
  .main-nav { display: none; }
  .header-phone { display: none; }
  .nav-toggle { display: flex; }

  .site-header.nav-open .main-nav {
    display: flex;
    position: absolute;
    top: 82px;
    left: 0;
    right: 0;
    background: var(--ink);
    flex-direction: column;
    padding: 20px 24px 28px;
    gap: 4px;
    border-top: 1px solid var(--line-dark);
  }
  .site-header.nav-open .main-nav a { padding: 14px 4px; width: 100%; color: var(--steel-2); border-bottom: 1px solid var(--line-dark); }
  .site-header.nav-open .main-nav a:hover,
  .site-header.nav-open .main-nav a[aria-current="page"] { color: var(--white); }
  .site-header.nav-open .main-nav .nav-cta {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 12px;
    padding: 14px 4px;
    border-bottom: none;
    border: none;
    border-radius: var(--radius);
    background: var(--rust);
    color: var(--white);
  }
}

@media (max-width: 760px) {
  .utility-bar-tag { display: none; }
  section { padding: 60px 0; }
  .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta-banner { padding: 32px 26px; flex-direction: column; align-items: flex-start; }
  .form-row { grid-template-columns: 1fr; }
  .hero-stats { flex-wrap: wrap; }
  .hero-stats div { flex: 0 0 50%; border-right: none; padding-right: 0; margin-bottom: 18px; }
}

@media (max-width: 560px) {
  .utility-bar-info .ub-item:not(:first-child) { display: none; }
}

@media (max-width: 520px) {
  .cta-banner-actions .btn { width: 100%; }
  .hero-actions .btn { width: 100%; }
  /* Nessa largura, logo + hambúrguer + botão não cabem lado a lado com folga */
  .header-cta .btn-amber { display: none; }
  .header-cta { gap: 8px; }
}