/* ============================================================
   MBK ENGENHARIA — Site institucional
   HTML5 + CSS3 + JS puro · sem frameworks
   ------------------------------------------------------------
   Sumário
   1.  Tokens / variáveis de marca
   2.  Reset e base
   3.  Tipografia
   4.  Layout: container, section, eyebrow
   5.  Botões
   6.  Utilidades (reveal)
   7.  Header + navegação mobile
   8.  Hero + barra de autoridade
   9.  Sobre
   10. Serviços
   11. Problema / consciência
   12. Processo
   13. Segurança
   14. Projetos
   15. CTA final
   16. Contacto
   17. Footer
   18. WhatsApp flutuante
   19. Responsividade
   20. Movimento reduzido / foco
   ============================================================ */

/* ---------- 1. TOKENS ---------- */
:root{
  /* cores da marca */
  --navy:        #0B1E3C;
  --navy-deep:   #061426;
  --navy-light:  #14315C;
  --gold:        #C6A15B;
  --gold-soft:   #D8BE8C;
  --white:       #FFFFFF;
  --light-gray:  #F3F4F6;
  --text:        #1A2431;
  --text-muted:  #59636F;

  /* superfícies derivadas */
  --hairline:        rgba(11, 30, 60, .12);
  --hairline-light:  rgba(255, 255, 255, .14);
  --page-bg:         #FFFFFF;

  /* tipografia */
  --font-head: "Manrope", "Inter", system-ui, sans-serif;
  --font-body: "Inter", "Manrope", system-ui, sans-serif;

  --fs-h1:   clamp(2.5rem, 1.75rem + 3.4vw, 4.25rem);
  --fs-h2:   clamp(1.85rem, 1.45rem + 1.9vw, 2.9rem);
  --fs-h3:   clamp(1.12rem, 1.05rem + 0.35vw, 1.32rem);
  --fs-lead: clamp(1.02rem, 0.98rem + 0.3vw, 1.2rem);
  --fs-body: 1rem;
  --fs-small: 0.86rem;

  /* espaçamento */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --section-pad: clamp(4rem, 3rem + 6vw, 8rem);

  /* estrutura */
  --container: 1280px;
  --container-pad: clamp(1.25rem, 5vw, 3rem);
  --radius: 2px;
  --radius-lg: 4px;

  /* sombras (discretas) */
  --shadow-header: 0 1px 0 rgba(11,30,60,.06), 0 10px 30px -18px rgba(11,30,60,.35);
  --shadow-card: 0 24px 60px -32px rgba(11,30,60,.35);

  /* transições */
  --ease: cubic-bezier(.2, .6, .2, 1);
  --t-fast: .2s var(--ease);
  --t-med: .35s var(--ease);
}

/* ---------- 2. RESET E BASE ---------- */
*, *::before, *::after{ box-sizing: border-box; }
*{ margin: 0; }

html{
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;          /* contém overflow lateral sem quebrar o position: sticky do header */
}

body{
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--text);
  background: var(--page-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img{ max-width: 100%; display: block; height: auto; }
a{ color: inherit; text-decoration: none; }
button{ font: inherit; color: inherit; cursor: pointer; background: none; border: 0; }
ul, ol{ list-style: none; padding: 0; }
input, select, textarea{ font: inherit; }

::selection{ background: var(--gold); color: var(--navy-deep); }

.skip-link{
  position: fixed;
  left: 1rem; top: -100px;
  z-index: 200;
  background: var(--navy);
  color: #fff;
  padding: .75rem 1.25rem;
  border-radius: var(--radius);
  transition: top var(--t-fast);
}
.skip-link:focus{ top: 1rem; }

/* ---------- 3. TIPOGRAFIA ---------- */
h1, h2, h3{
  font-family: var(--font-head);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--navy);
}
h2{ font-size: var(--fs-h2); font-weight: 700; }
h3{ font-size: var(--fs-h3); font-weight: 700; letter-spacing: -0.01em; }

p{ text-wrap: pretty; }

.section--navy h2, .section--navy h3,
.section--navy-deep h2, .section--navy-deep h3,
.hero h1{ color: #fff; }

.accent-dot{ color: var(--gold); }

/* ---------- 4. LAYOUT ---------- */
.container{
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.section{
  padding-block: var(--section-pad);
  position: relative;
}
.section[id], .hero[id]{ scroll-margin-top: 96px; }

.section--navy{ background: var(--navy); color: rgba(255,255,255,.72); }
.section--navy-deep{ background: var(--navy-deep); color: rgba(255,255,255,.7); }

.eyebrow{
  font-family: var(--font-head);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--gold);
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-bottom: 1.1rem;
}
.eyebrow::before{
  content: "";
  width: 28px;
  height: 1px;
  background: var(--gold);
  display: inline-block;
}
.eyebrow--light{ color: var(--gold-soft); }

/* ---------- 5. BOTÕES ---------- */
.btn{
  --arrow-x: 0;
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  padding: 1rem 1.75rem;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: .92rem;
  letter-spacing: .01em;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast), transform var(--t-fast);
  will-change: transform;
}
.btn span{ transition: transform var(--t-fast); transform: translateX(var(--arrow-x)); }
.btn:hover{ --arrow-x: 4px; }

.btn--sm{ padding: .7rem 1.15rem; font-size: .84rem; }
.btn--block{ width: 100%; justify-content: center; }

.btn--gold{ background: var(--gold); color: var(--navy-deep); }
.btn--gold:hover{ background: var(--gold-soft); transform: translateY(-1px); }

.btn--ghost{ background: transparent; color: #fff; border-color: rgba(255,255,255,.55); }
.btn--ghost:hover{ background: rgba(255,255,255,.08); border-color: #fff; transform: translateY(-1px); }

.btn--navy{ background: var(--navy); color: #fff; }
.btn--navy:hover{ background: var(--navy-light); transform: translateY(-1px); }

/* ---------- 6. UTILIDADES ---------- */
/* só esconde para animar quando há JS — sem JS, tudo aparece normalmente */
.js .reveal{
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s cubic-bezier(.16,1,.3,1), transform .7s cubic-bezier(.16,1,.3,1);
}
.js .reveal.is-visible{ opacity: 1; transform: none; }

[data-stagger] > .reveal:nth-child(2){ transition-delay: .05s; }
[data-stagger] > .reveal:nth-child(3){ transition-delay: .10s; }
[data-stagger] > .reveal:nth-child(4){ transition-delay: .15s; }
[data-stagger] > .reveal:nth-child(5){ transition-delay: .20s; }
[data-stagger] > .reveal:nth-child(6){ transition-delay: .25s; }
[data-stagger] > .reveal:nth-child(7){ transition-delay: .30s; }

/* linha do eyebrow "desenha" ao entrar */
.js .reveal .eyebrow::before{ width: 0; }
.js .reveal.is-visible .eyebrow::before{ width: 28px; transition: width .55s var(--ease) .18s; }

/* ---------- parallax ---------- */
[data-parallax]{ will-change: transform; }
.hero__media, .about__media, .problem__media, .cta-final__media{ overflow: hidden; }
.about__media img, .problem__media img{ scale: 1.16; }
.hero__media img{ height: 116%; }

/* moldura arquitetônica dourada usada em figuras */
.media-frame{
  position: absolute;
  inset: auto -18px -18px auto;
  width: 62%;
  height: 62%;
  border: 1px solid var(--gold);
  border-radius: var(--radius);
  z-index: 0;
  pointer-events: none;
}
.media-frame--left{ inset: -18px auto auto -18px; }

/* ---------- 7. HEADER ---------- */
.site-header{
  position: sticky;
  top: 0;
  z-index: 100;
  padding-block: 1.35rem;
  transition: background var(--t-med), padding var(--t-med), box-shadow var(--t-med);
}
.header__inner{
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.header__logo{ display: inline-flex; align-items: center; }
.logo{ display: block; width: auto; height: auto; }
.header__logo .logo{ height: 46px; transition: height var(--t-med); }
.logo--on-light{ display: none; }
.site-header.scrolled .header__logo .logo{ height: 40px; }
.site-header.scrolled .logo--on-dark{ display: none; }
.site-header.scrolled .logo--on-light{ display: block; }

.header__nav{ margin-left: auto; display: flex; align-items: center; gap: 2.25rem; }
.header__menu{ display: flex; gap: 2rem; }

.nav-link{
  position: relative;
  font-family: var(--font-head);
  font-weight: 500;
  font-size: .95rem;
  color: rgba(255,255,255,.9);
  padding-block: .25rem;
  transition: color var(--t-fast);
}
.nav-link::after{
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 1px;
  background: var(--gold);
  transition: width var(--t-med);
}
.nav-link:hover, .nav-link.is-current{ color: #fff; }
.nav-link:hover::after, .nav-link.is-current::after{ width: 100%; }

.header__cta{ flex-shrink: 0; }
.header__cta-drawer{ display: none; }
.header__toggle{ display: none; }

/* estado após scroll */
.site-header.scrolled{
  background: #fff;
  padding-block: .85rem;
  box-shadow: var(--shadow-header);
}
.site-header.scrolled .header__logo{ color: var(--navy); }
.site-header.scrolled .nav-link{ color: var(--text-muted); }
.site-header.scrolled .nav-link:hover,
.site-header.scrolled .nav-link.is-current{ color: var(--navy); }

.nav-backdrop{
  position: fixed;
  inset: 0;
  background: rgba(6,20,38,.55);
  backdrop-filter: blur(2px);
  z-index: 98;
  opacity: 0;
  transition: opacity var(--t-med);
}
.nav-backdrop.show{ opacity: 1; }

/* ---------- 8. HERO ---------- */
.hero{
  position: relative;
  min-height: 92vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: #fff;
  margin-top: -84px;      /* header sobrepõe o hero */
  padding-top: 84px;
}
.hero__media{ position: absolute; inset: 0; z-index: -1; }
.hero__media img{ width: 100%; height: 100%; object-fit: cover; }
.hero__overlay{
  position: absolute; inset: 0;
  background:
    linear-gradient(100deg, rgba(6,20,38,.92) 0%, rgba(6,20,38,.66) 45%, rgba(6,20,38,.34) 100%),
    linear-gradient(0deg, rgba(6,20,38,.55), rgba(6,20,38,.1));
}

.hero__content{ padding-block: clamp(3rem, 6vw, 6rem); }
.hero__title{
  font-size: var(--fs-h1);
  max-width: 16ch;
  margin-bottom: 1.5rem;
}
.hero__text{
  font-size: var(--fs-lead);
  color: rgba(255,255,255,.82);
  max-width: 52ch;
  margin-bottom: 2.25rem;
}
.hero__actions{ display: flex; flex-wrap: wrap; gap: 1rem; }

/* barra de autoridade */
.hero__authority{
  margin-top: auto;
  background: rgba(6,20,38,.55);
  backdrop-filter: blur(3px);
  border-top: 1px solid rgba(198,161,91,.45);
}
.authority__grid{ display: grid; grid-template-columns: repeat(3, 1fr); }
.authority__item{
  display: flex;
  gap: 1rem;
  padding: 1.6rem clamp(1rem, 2.4vw, 2rem);
}
.authority__item + .authority__item{ border-left: 1px solid rgba(255,255,255,.14); }
.authority__icon{ color: var(--gold); flex-shrink: 0; }
.authority__icon svg{ width: 24px; height: 24px; }
.authority__title{
  font-family: var(--font-head);
  font-weight: 700;
  font-size: .78rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: .3rem;
}
.authority__text{ font-size: .86rem; color: rgba(255,255,255,.62); line-height: 1.55; }

/* ---------- 9. SOBRE ---------- */
.about__grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: center;
}
.about__text h2{ margin-bottom: 1.4rem; }
.about__text p + p{ margin-top: 1.1rem; }
.about__text .tag-line{ margin-top: 2rem; }

.tag-line{
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: .8rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--navy);
}
.tag-line span{ position: relative; padding-left: 1.5rem; }
.tag-line span::before{
  content: "";
  position: absolute; left: 0; top: 50%;
  width: 14px; height: 1px;
  background: var(--gold);
}

.about__media, .problem__media{ position: relative; border-radius: var(--radius); }
.about__media img, .problem__media img{
  position: relative;
  z-index: 1;
  width: 100%;
  aspect-ratio: 4 / 3.4;
  object-fit: cover;
  border-radius: var(--radius);
  background: var(--light-gray);
}
.media-tag{
  position: absolute;
  left: 0; bottom: 0;
  z-index: 2;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--navy-deep);
  background: var(--gold);
  padding: .5rem .85rem;
}

/* ---------- 10. SERVIÇOS (lista editorial) ---------- */
.services{ position: relative; overflow: hidden; }
.services__blueprint{
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(120% 80% at 10% 0%, #000, transparent 75%);
          mask-image: radial-gradient(120% 80% at 10% 0%, #000, transparent 75%);
  pointer-events: none;
}
.services__layout{
  position: relative;
  display: grid;
  grid-template-columns: minmax(260px, .82fr) 1.35fr;
  gap: clamp(2rem, 6vw, 5.5rem);
  align-items: start;
}
.services__intro{ position: sticky; top: 118px; }
.services__intro h2{ margin: 1.15rem 0 1.35rem; }
.services__lead{ font-size: var(--fs-lead); color: rgba(255,255,255,.7); }
.services__hint{
  margin-top: 1.1rem;
  font-size: .82rem;
  letter-spacing: .02em;
  color: rgba(255,255,255,.5);
}
.services__cta{ margin-top: 1.75rem; }

.services__list{ border-top: 1px solid var(--hairline-light); }
.srv{ border-bottom: 1px solid var(--hairline-light); }

.srv__link{
  position: relative;
  width: 100%;
  display: grid;
  grid-template-columns: auto auto 1fr auto;
  align-items: center;
  gap: clamp(.9rem, 2.4vw, 1.9rem);
  padding: clamp(1.35rem, 2.4vw, 1.9rem) clamp(.5rem, 1.4vw, 1.1rem) clamp(1.35rem, 2.4vw, 1.9rem) 0;
  text-align: left;
  background: none;
  border: 0;
  font: inherit;
  color: inherit;
  cursor: pointer;
  transition: background var(--t-med), padding-left var(--t-med);
}
.srv__link::before{
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: var(--gold);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--t-med);
}
.srv__num{
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.05rem, .9rem + 1vw, 1.55rem);
  font-variant-numeric: tabular-nums;
  color: rgba(255,255,255,.28);
  min-width: 2.4ch;
  transition: color var(--t-med);
}
.srv__icon{ display: flex; color: var(--gold); flex-shrink: 0; }
.srv__icon svg{ width: 22px; height: 22px; }
.srv__body{ min-width: 0; }
.srv__title{
  display: block;
  font-family: var(--font-head);
  font-size: clamp(1.1rem, 1rem + .5vw, 1.45rem);
  font-weight: 700;
  color: #fff;
  letter-spacing: -.01em;
}
.srv__desc{
  display: block;
  margin-top: .35rem;
  font-size: .9rem;
  line-height: 1.55;
  color: rgba(255,255,255,.56);
  max-width: 54ch;
}

/* indicador +/− */
.srv__toggle{
  position: relative;
  width: 22px; height: 22px;
  flex-shrink: 0;
}
.srv__toggle::before,
.srv__toggle::after{
  content: "";
  position: absolute;
  left: 50%; top: 50%;
  width: 13px; height: 2px;
  background: var(--gold);
  transform: translate(-50%, -50%);
  transition: transform var(--t-med), opacity var(--t-med);
}
.srv__toggle::after{ transform: translate(-50%, -50%) rotate(90deg); }
.srv.is-open .srv__toggle::after{ transform: translate(-50%, -50%) rotate(0); opacity: 0; }

.srv__link:hover,
.srv__link:focus-visible{
  background: rgba(255,255,255,.04);
  padding-left: clamp(.75rem, 1.6vw, 1.35rem);
  outline: none;
}
.srv__link:hover::before,
.srv__link:focus-visible::before,
.srv.is-open .srv__link::before{ transform: scaleY(1); }
.srv__link:hover .srv__num,
.srv__link:focus-visible .srv__num,
.srv.is-open .srv__num{ color: var(--gold); }
.srv__link:focus-visible .srv__title{ text-decoration: underline; text-underline-offset: 4px; }

/* painel expansível (truque grid-rows 0fr → 1fr) */
.srv__panel{
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .4s var(--ease);
}
.srv.is-open .srv__panel{ grid-template-rows: 1fr; }
.srv__panel-inner{ overflow: hidden; }
.srv__panel-inner p{
  font-size: .92rem;
  line-height: 1.7;
  color: rgba(255,255,255,.7);
  max-width: 62ch;
  padding-left: calc(2.4ch + clamp(.9rem, 2.4vw, 1.9rem));
}
.srv__panel-inner p:first-child{ padding-top: .25rem; }
.srv__panel-inner p:last-child{ padding-bottom: clamp(1.35rem, 2.4vw, 1.9rem); }
.srv__panel-inner p + p{ margin-top: .8rem; }
.srv__panel-inner strong{ color: #fff; font-weight: 600; }

/* sem JS: mostra tudo aberto */
html:not(.js) .srv__panel{ grid-template-rows: 1fr; }
html:not(.js) .srv__toggle{ display: none; }

/* ---------- 11. PROBLEMA ---------- */
.problem__grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: center;
}
.problem__text h2{ margin: 1.4rem 0 1.2rem; }
.problem__text .btn{ margin-top: 1.75rem; }
.problem__media img{ aspect-ratio: 4 / 4.2; }

/* ---------- 12. PROCESSO ---------- */
.process__head{
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: end;
  margin-bottom: clamp(3rem, 5vw, 4.5rem);
}
.process__lead{ font-size: var(--fs-lead); color: var(--text-muted); }

.process__steps{
  position: relative;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  gap: 2rem;
}
.process__steps::before{
  content: "";
  position: absolute;
  top: 24px; left: 24px; right: 24px;
  height: 1px;
  background: linear-gradient(90deg, var(--gold), var(--hairline));
  transform-origin: left;
  transition: transform 1s var(--ease);
}
.js .process__steps::before{ transform: scaleX(0); }
.js .process__steps.is-drawn::before{ transform: scaleX(1); }
.step{ position: relative; }
.step__icon{
  position: relative;
  z-index: 1;
  width: 48px; height: 48px;
  display: grid;
  place-items: center;
  border: 1px solid var(--hairline);
  border-radius: 50%;
  background: var(--page-bg);
  color: var(--gold);
}
.step__icon svg{ width: 22px; height: 22px; }
.step__num{
  display: block;
  margin-top: 1.15rem;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: .8rem;
  letter-spacing: .14em;
  color: var(--gold);
}
.step h3{ margin-top: .35rem; }
.step p{
  margin-top: .55rem;
  font-size: .92rem;
  color: var(--text-muted);
}

/* ---------- 13. SEGURANÇA ---------- */
.safety{ overflow: hidden; }
.safety__grid-bg{
  position: absolute;
  inset: -20% 0 auto 0;
  height: 140%;
  background-image:
    linear-gradient(rgba(198,161,91,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(198,161,91,.06) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: radial-gradient(120% 90% at 80% 20%, #000 0%, transparent 70%);
          mask-image: radial-gradient(120% 90% at 80% 20%, #000 0%, transparent 70%);
}
.safety__inner{
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(1.75rem, 4vw, 3.5rem);
  align-items: start;
}
.safety__mark{ color: var(--gold); }
.safety__mark svg{ width: 60px; height: 60px; }
.safety__content h2{ margin-bottom: 1.1rem; }
.safety__content p{ max-width: 62ch; color: rgba(255,255,255,.72); }

/* ---------- 14. PROJETOS ---------- */
.projects__head{
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1.5rem 2rem;
  margin-bottom: 1.25rem;
}
.projects__filters{ display: flex; flex-wrap: wrap; gap: .6rem; }
.filter{
  padding: .55rem 1.05rem;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: .82rem;
  letter-spacing: .03em;
  color: var(--text-muted);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
}
.filter:hover:not(.is-active){ color: var(--navy); border-color: var(--navy); }
.filter.is-active{ background: var(--navy); color: #fff; border-color: var(--navy); }

.projects__note{
  font-size: .95rem;
  color: var(--text-muted);
  max-width: 66ch;
  margin-bottom: 2.5rem;
  transition: opacity var(--t-fast);
}

.projects__grid{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 200px;
  gap: 16px;
}
.project{
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--navy);
}
.project--wide{ grid-column: span 2; grid-row: span 2; }
.project img{
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .7s var(--ease);
}
.project::after{
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(6,20,38,.32) 0%, rgba(6,20,38,0) 34%, rgba(6,20,38,0) 70%, rgba(6,20,38,.34) 100%);
  opacity: .8;
  transition: opacity var(--t-med);
}
/* cantoneira dourada no hover — detalhe editorial */
.project::before{
  content: "";
  position: absolute;
  inset: 12px;
  border: 1px solid rgba(198,161,91,.9);
  opacity: 0;
  transform: scale(1.02);
  transition: opacity var(--t-med), transform var(--t-med);
  z-index: 2;
  pointer-events: none;
}
.project:hover img{ transform: scale(1.06); }
.project:hover::after{ opacity: 1; }
.project:hover::before{ opacity: 1; transform: none; }

.project figcaption{
  position: absolute;
  left: 0; top: 0;
  z-index: 3;
  padding: 14px;
}
.project__tag{
  display: inline-block;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: .66rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--navy-deep);
  background: var(--gold);
  padding: .32rem .62rem;
  border-radius: var(--radius);
}
.project[hidden]{ display: none; }
@keyframes projIn{ from{ opacity: 0; transform: scale(.98); } to{ opacity: 1; transform: none; } }
.project.is-in{ animation: projIn .4s var(--ease) both; }

/* ---------- 15. CTA FINAL ---------- */
.cta-final{
  position: relative;
  padding-block: clamp(5rem, 7vw, 9rem);
  display: grid;
  place-items: center;
  text-align: center;
  overflow: hidden;
}
.cta-final__media{ position: absolute; inset: 0; z-index: -1; }
.cta-final__media img{ width: 100%; height: 100%; object-fit: cover; }
.cta-final__overlay{
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(6,20,38,.82), rgba(6,20,38,.9));
}
.cta-final__content{ max-width: 720px; color: #fff; }
.cta-final__content h2{ color: #fff; margin-bottom: 1rem; }
.cta-final__content p{ color: rgba(255,255,255,.8); font-size: var(--fs-lead); }
.cta-final__content .btn{ margin-top: 2rem; }
.cta-final__note{
  margin-top: 1.5rem !important;
  font-family: var(--font-head);
  font-size: .78rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold-soft) !important;
}

/* ---------- 16. CONTACTO ---------- */
.contact__grid{
  display: grid;
  grid-template-columns: 1.3fr .9fr;
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: start;
}
.contact__main h2{ margin: 1.3rem 0 1rem; }
.contact__intro{ color: var(--text-muted); max-width: 46ch; margin-bottom: 2.5rem; }

.contact__form{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem 1.5rem;
}
.field{ display: flex; flex-direction: column; }
.field--full{ grid-column: 1 / -1; }
.field label{
  font-family: var(--font-head);
  font-size: .74rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: .5rem;
}
.field input,
.field textarea,
.field select{
  width: 100%;
  padding: .8rem .85rem;
  font-size: .95rem;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.field textarea{ resize: vertical; min-height: 110px; }
.field input:focus,
.field textarea:focus,
.field select:focus{
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(198,161,91,.2);
}
.select-wrap{ position: relative; }
.select-wrap::after{
  content: "";
  position: absolute;
  right: 14px; top: 50%;
  width: 9px; height: 9px;
  border-right: 1.5px solid var(--text-muted);
  border-bottom: 1.5px solid var(--text-muted);
  transform: translateY(-70%) rotate(45deg);
  pointer-events: none;
}
.field select{ appearance: none; -webkit-appearance: none; padding-right: 2.25rem; }
.contact__form .btn--block{ grid-column: 1 / -1; margin-top: .25rem; }

.form-status{
  grid-column: 1 / -1;
  font-size: .9rem;
  padding: .85rem 1rem;
  border-radius: var(--radius);
}
.form-status.is-success{ background: rgba(198,161,91,.14); color: var(--navy); border: 1px solid var(--gold); }
.form-status.is-error{ background: #fbeaea; color: #8a2b2b; border: 1px solid #e3b6b6; }

.contact__info{
  background: var(--light-gray);
  border-top: 2px solid var(--gold);
  border-radius: var(--radius-lg);
  padding: clamp(1.75rem, 3.5vw, 2.75rem);
}
.logo--info{ height: 52px; margin-bottom: 1.5rem; }
.contact__list li{
  display: flex;
  flex-direction: column;
  gap: .2rem;
  padding-block: 1rem;
  border-bottom: 1px solid var(--hairline);
}
.contact__list li:last-child{ border-bottom: 0; }
.contact__label{
  font-family: var(--font-head);
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.contact__list a,
.contact__list li > span:last-child{
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1.02rem;
  color: var(--navy);
}
.contact__list a{ transition: color var(--t-fast); }
.contact__list a:hover{ color: var(--gold); }

/* ---------- 17. FOOTER ---------- */
.site-footer{
  background: var(--navy-deep);
  color: rgba(255,255,255,.68);
  padding-top: clamp(3.5rem, 5vw, 5rem);
}
.footer__grid{
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
}
.logo--footer{ height: 48px; margin-bottom: 1.25rem; }
.footer__brand p{ max-width: 34ch; font-size: .92rem; }
.footer__heading{
  font-family: var(--font-head);
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 1rem;
}
.footer__col a{ line-height: 2.1; font-size: .92rem; transition: color var(--t-fast); }
.footer__col a:hover{ color: var(--gold); }

.footer__bottom{
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: .75rem;
  margin-top: clamp(3rem, 5vw, 4rem);
  padding-block: 1.5rem;
  border-top: 1px solid rgba(255,255,255,.1);
  font-size: .8rem;
  color: rgba(255,255,255,.5);
}
.footer__tagline{
  font-family: var(--font-head);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--gold-soft);
}

/* ---------- 18. WHATSAPP FLUTUANTE ---------- */
.wa-float{
  position: fixed;
  right: 24px; bottom: 24px;
  z-index: 95;
  width: 54px; height: 54px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--navy);
  border-radius: 50%;
  box-shadow: 0 12px 30px -10px rgba(6,20,38,.55);
  transition: transform var(--t-fast), background var(--t-fast);
}
.wa-float svg{ width: 26px; height: 26px; }
.wa-float::after{
  content: "";
  position: absolute; inset: -4px;
  border: 1px solid var(--gold);
  border-radius: 50%;
  opacity: 0;
  transition: opacity var(--t-fast);
}
.wa-float:hover{ background: var(--navy-light); transform: translateY(-2px); }
.wa-float:hover::after{ opacity: .6; }

/* ---------- 18b. PÁGINA INTERNA: hero + serviços detalhados ---------- */
.page-hero{
  position: relative;
  overflow: hidden;
  background: var(--navy);
  color: #fff;
  margin-top: -84px;
  padding-top: calc(84px + clamp(3rem, 7vw, 6rem));
  padding-bottom: clamp(3rem, 7vw, 6rem);
}
.page-hero__grid-bg{
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(120% 90% at 85% 0%, #000, transparent 70%);
          mask-image: radial-gradient(120% 90% at 85% 0%, #000, transparent 70%);
}
.page-hero__inner{ position: relative; max-width: 62ch; }
.page-hero h1{ font-size: var(--fs-h1); color: #fff; margin: 1.1rem 0 1.25rem; }
.page-hero p{ color: rgba(255,255,255,.8); font-size: var(--fs-lead); }
.page-hero .btn{ margin-top: 2rem; }

.breadcrumb{
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  align-items: center;
  font-family: var(--font-head);
  font-size: .78rem;
  letter-spacing: .04em;
  color: rgba(255,255,255,.55);
  margin-bottom: 1.5rem;
}
.breadcrumb a{ color: rgba(255,255,255,.75); transition: color var(--t-fast); }
.breadcrumb a:hover{ color: var(--gold); }

.svc-detail{
  border-top: 1px solid var(--hairline);
  padding-block: clamp(3rem, 6vw, 5.5rem);
  scroll-margin-top: 100px;
}
.svc-detail:first-of-type{ border-top: 0; }
.svc-detail__grid{
  display: grid;
  grid-template-columns: minmax(210px, .68fr) 1.32fr;
  gap: clamp(1.5rem, 5vw, 4.5rem);
  align-items: start;
}
.svc-detail__aside{ position: sticky; top: 110px; }
.svc-detail__num{
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(2.4rem, 1.9rem + 3vw, 3.9rem);
  color: var(--gold);
  line-height: 1;
}
.svc-detail__icon{
  margin-top: 1.2rem;
  width: 52px; height: 52px;
  border: 1px solid var(--hairline);
  display: grid;
  place-items: center;
  color: var(--gold);
}
.svc-detail__icon svg{ width: 24px; height: 24px; }
.svc-detail__title{ margin: .4rem 0 1.1rem; }
.svc-detail__lead{ font-size: var(--fs-lead); color: var(--text); }
.svc-detail h3{
  font-family: var(--font-head);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 2rem 0 1rem;
}
.svc-list{ display: grid; gap: .7rem; }
.svc-list li{
  position: relative;
  padding-left: 1.7rem;
  color: var(--text);
  font-size: .96rem;
  line-height: 1.6;
}
.svc-list li::before{
  content: "";
  position: absolute;
  left: 0; top: .6em;
  width: 12px; height: 1px;
  background: var(--gold);
}
.svc-when{
  margin-top: 1.75rem;
  padding: 1rem 1.25rem;
  background: var(--light-gray);
  border-left: 2px solid var(--gold);
  font-size: .95rem;
  color: var(--text-muted);
}
.svc-when strong{ color: var(--navy); font-weight: 600; }

@media (max-width: 900px){
  .svc-detail__grid{ grid-template-columns: 1fr; }
  .svc-detail__aside{ position: static; display: flex; align-items: center; gap: 1rem; }
  .svc-detail__icon{ margin-top: 0; }
}

/* ---------- 19. RESPONSIVIDADE ---------- */
@media (max-width: 1080px){
  .services__layout{ grid-template-columns: 1fr; gap: 2.5rem; }
  .services__intro{ position: static; }
}

@media (max-width: 1024px){
  .process__steps{ grid-template-columns: repeat(2, 1fr); grid-auto-flow: row; }
  .process__steps::before{ display: none; }
  .projects__grid{ grid-template-columns: repeat(2, 1fr); grid-auto-rows: 220px; }
}

@media (max-width: 900px){
  .header__cta{ display: none; }
  .header__toggle{
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px; height: 44px;
    margin-left: auto;
  }
  .header__toggle span{
    width: 24px; height: 2px;
    background: currentColor;
    transition: transform var(--t-fast), opacity var(--t-fast);
  }
  .site-header .header__toggle{ color: #fff; }
  .site-header.scrolled .header__toggle{ color: var(--navy); }
  .header__toggle[aria-expanded="true"]{ color: #fff; }
  .header__toggle[aria-expanded="true"] span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
  .header__toggle[aria-expanded="true"] span:nth-child(2){ opacity: 0; }
  .header__toggle[aria-expanded="true"] span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

  .header__nav{
    position: fixed;
    inset: 0 0 0 auto;
    width: min(82vw, 340px);
    margin-left: 0;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    padding: 6.5rem 2rem 2.5rem;
    background: var(--navy-deep);
    transform: translateX(100%);
    transition: transform var(--t-med);
    z-index: 99;
  }
  .header__nav.open{ transform: translateX(0); }
  .header__menu{ flex-direction: column; gap: 0; }
  .header__menu li{ border-bottom: 1px solid rgba(255,255,255,.1); }
  .header__nav .nav-link{
    display: block;
    padding: 1.1rem 0;
    font-size: 1.05rem;
  }
  .header__nav .nav-link::after{ display: none; }
  .header__cta-drawer{ display: inline-flex; margin-top: 2rem; justify-content: center; }

  /* garante contraste dos links dentro do drawer escuro,
     mesmo com o header em estado "scrolled" (barra branca) */
  .site-header .header__nav .nav-link,
  .site-header.scrolled .header__nav .nav-link{ color: rgba(255,255,255,.92); }
  .site-header .header__nav .nav-link:hover,
  .site-header .header__nav .nav-link.is-current,
  .site-header.scrolled .header__nav .nav-link:hover,
  .site-header.scrolled .header__nav .nav-link.is-current{ color: #fff; }
  .site-header.scrolled :focus-visible{ outline-color: var(--gold); }
}

@media (max-width: 768px){
  .about__grid,
  .problem__grid,
  .process__head,
  .contact__grid{ grid-template-columns: 1fr; }

  .process__head{ align-items: start; }
  .problem__media{ order: -1; }

  .authority__grid{ grid-template-columns: 1fr; }
  .authority__item + .authority__item{ border-left: 0; border-top: 1px solid rgba(255,255,255,.14); }

  .safety__inner{ grid-template-columns: 1fr; }

  .projects__grid{ grid-template-columns: 1fr; grid-auto-rows: 240px; }
  .project--wide{ grid-column: span 1; grid-row: span 1; }

  .contact__form{ grid-template-columns: 1fr; }
  .media-frame{ display: none; }
}

@media (max-width: 560px){
  :root{ --container-pad: 1.15rem; }
  .hero{ min-height: 88vh; }
  .hero__actions{ flex-direction: column; align-items: stretch; }
  .hero__actions .btn{ justify-content: center; }
  .footer__grid{ grid-template-columns: 1fr; gap: 2.25rem; }
  .footer__bottom{ flex-direction: column; }
  .wa-float{ right: 16px; bottom: 16px; width: 50px; height: 50px; }

  .srv__link{ grid-template-columns: auto 1fr auto; column-gap: 1rem; }
  .srv__icon{ display: none; }
  .srv__panel-inner p{ padding-left: calc(2.4ch + 1rem); }
}

/* ---------- 20. MOVIMENTO REDUZIDO / FOCO ---------- */
:where(a, button, input, select, textarea, .filter):focus-visible{
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: var(--radius);
}
.site-header.scrolled :focus-visible{ outline-color: var(--navy); }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  .reveal{ opacity: 1 !important; transform: none !important; transition: none !important; }
  [data-parallax]{ translate: none !important; scale: 1 !important; }
  .hero__media img{ height: 100% !important; }
  .process__steps::before{ transform: scaleX(1) !important; }
  *, *::before, *::after{
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}

@media (min-width: 901px){
  body.nav-open{ overflow: auto; }
}
body.nav-open{ overflow: hidden; }