/* ============================================================
   IGUATIBA — style.css
   Consultoria & Projetos · Saneamento
   ============================================================ */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

:root {
  --petroleo:  #0E3A43;
  --abisso:    #07232A;
  --cobre:     #B08D57;
  --teal:      #3E7C7B;
  --offwhite:  #F5F2EC;
  --ink:       #1C1C1C;

  /* superfícies derivadas */
  --abisso-soft: #0a2c34;
  --line-dark:   rgba(245, 242, 236, 0.10);
  --line-light:  rgba(14, 58, 67, 0.12);

  /* tipografia fluida */
  --step--1: clamp(0.78rem, 0.74rem + 0.2vw, 0.86rem);
  --step-0:  clamp(1rem, 0.95rem + 0.25vw, 1.13rem);
  --step-1:  clamp(1.25rem, 1.1rem + 0.7vw, 1.5rem);
  --step-2:  clamp(1.6rem, 1.3rem + 1.4vw, 2.4rem);
  --step-3:  clamp(2.1rem, 1.5rem + 2.8vw, 3.6rem);
  --step-4:  clamp(2.6rem, 1.6rem + 4.6vw, 5rem);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

body {
  font-family: 'Spectral', Georgia, serif;
  background: var(--offwhite);
  color: var(--ink);
  font-size: var(--step-0);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

::selection { background: var(--cobre); color: var(--abisso); }

/* ---------- Helpers ---------- */
.label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: var(--step--1);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--teal);
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.label::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--cobre);
  display: inline-block;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 48px; }
.sans { font-family: 'Archivo', sans-serif; }

/* Scroll reveal */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
[data-reveal].in { opacity: 1; transform: none; }
[data-reveal][data-delay="1"] { transition-delay: 0.08s; }
[data-reveal][data-delay="2"] { transition-delay: 0.16s; }
[data-reveal][data-delay="3"] { transition-delay: 0.24s; }
[data-reveal][data-delay="4"] { transition-delay: 0.32s; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ============================================================
   HEADER
   ============================================================ */
header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  padding: 0 48px;
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: transparent;
  transition: background 0.4s var(--ease), height 0.4s var(--ease), border-color 0.4s var(--ease);
  border-bottom: 1px solid transparent;
}
header.scrolled {
  background: rgba(7, 35, 42, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  height: 64px;
  border-bottom: 1px solid var(--line-dark);
}
header.scrolled::after {
  content: "";
  position: absolute;
  left: 0; bottom: -1px;
  width: 100%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--cobre) 50%, transparent);
  opacity: 0.5;
}

.logo { display: flex; align-items: center; }
.logo img { height: 26px; display: block; }
.logo-text {
  font-family: 'Archivo', sans-serif;
  font-weight: 600;
  font-size: 18px;
  letter-spacing: 0.22em;
  color: var(--offwhite);
  text-decoration: none;
}

nav { display: flex; align-items: center; gap: 44px; }
nav a {
  font-family: 'Archivo', sans-serif;
  font-weight: 500;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: rgba(245, 242, 236, 0.65);
  text-decoration: none;
  position: relative;
  padding: 6px 0;
  transition: color 0.25s var(--ease);
}
nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 1px;
  background: var(--cobre);
  transition: width 0.3s var(--ease);
}
nav a:hover { color: var(--offwhite); }
nav a:hover::after { width: 100%; }
nav a.nav-cta { color: var(--cobre); }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column; gap: 6px;
  cursor: pointer; background: none; border: none; padding: 4px; z-index: 101;
}
.hamburger span {
  display: block; width: 26px; height: 1.5px;
  background: var(--offwhite); transition: all 0.3s var(--ease);
}
.hamburger.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

.mobile-nav {
  position: fixed; inset: 0;
  background: var(--abisso);
  padding: 96px 48px 48px;
  z-index: 150;
  display: flex; flex-direction: column; gap: 8px;
  transform: translateY(-100%);
  transition: transform 0.45s var(--ease);
  visibility: hidden;
}
.mobile-nav.open { transform: translateY(0); visibility: visible; }
.mobile-nav a {
  font-family: 'Spectral', serif;
  font-weight: 300;
  font-size: clamp(2rem, 8vw, 3rem);
  color: var(--offwhite);
  text-decoration: none;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-dark);
  transition: color 0.25s var(--ease), padding-left 0.3s var(--ease);
}
.mobile-nav a:hover { color: var(--cobre); padding-left: 16px; }
.mobile-nav .mn-index {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px; color: var(--teal); margin-right: 16px;
}

/* ============================================================
   HERO
   ============================================================ */
#hero {
  position: relative;
  min-height: 100vh;
  background: var(--abisso);
  display: flex;
  align-items: flex-end;
  padding: 0 0 80px;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background-image: url('../assets/img-hero.jpg');
  background-size: cover; background-position: center;
  opacity: 0.22; filter: grayscale(100%) contrast(1.1);
  z-index: 0;
}
.hero-bg.placeholder {
  background-image:
    radial-gradient(120% 90% at 80% 0%, rgba(62,124,123,0.18), transparent 55%),
    linear-gradient(160deg, #0c333c 0%, #07232A 60%);
  opacity: 1;
}
/* gradiente de leitura na base */
#hero::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(7,35,42,0.4) 0%, transparent 30%, rgba(7,35,42,0.85) 100%);
  z-index: 1; pointer-events: none;
}

.hero-content { position: relative; z-index: 2; width: 100%; }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 40px;
}

.hero-eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  font-size: var(--step--1);
  text-transform: uppercase;
  letter-spacing: 0.28em;
  color: var(--teal);
  margin-bottom: 36px;
}
.hero-title {
  font-family: 'Spectral', serif;
  font-weight: 300;
  font-size: var(--step-4);
  color: var(--offwhite);
  line-height: 1.04;
  letter-spacing: -0.01em;
  max-width: 16ch;
}
.hero-title em {
  font-style: italic;
  color: var(--cobre);
}
.hero-sub {
  font-family: 'Spectral', serif;
  font-weight: 300;
  font-style: italic;
  font-size: var(--step-1);
  color: rgba(245, 242, 236, 0.68);
  line-height: 1.6;
  max-width: 52ch;
  margin-top: 36px;
  padding-left: 28px;
  border-left: 1px solid var(--cobre);
}
.hero-cta {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: 'Archivo', sans-serif;
  font-weight: 500; font-size: 12px;
  text-transform: uppercase; letter-spacing: 0.16em;
  color: var(--offwhite);
  text-decoration: none;
  margin-top: 48px;
  padding-bottom: 6px;
  position: relative;
}
.hero-cta .arrow { color: var(--cobre); transition: transform 0.3s var(--ease); }
.hero-cta::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 100%; height: 1px; background: var(--line-dark);
}
.hero-cta:hover .arrow { transform: translateX(6px); }

/* régua de nível ("cota") — explica o conceito visualmente */
.hero-gauge { justify-self: end; }
.hero-gauge svg { width: clamp(180px, 20vw, 240px); height: auto; display: block; }
.gauge-tick { stroke: rgba(245, 242, 236, 0.20); stroke-width: 1; }
.gauge-axis { stroke: rgba(245, 242, 236, 0.28); stroke-width: 1; }
.gauge-flow { stroke: var(--cobre); stroke-width: 1; stroke-dasharray: 2 5; opacity: 0.5; }
.gauge-surface { stroke: var(--teal); stroke-width: 1; stroke-dasharray: 4 4; }
.gauge-cota { stroke: var(--cobre); stroke-width: 1.5; }
.gauge-node { fill: var(--cobre); }
.gauge-label { font-family: 'IBM Plex Mono', monospace; font-size: 9px; letter-spacing: 0.14em; }
.gauge-label.t { fill: var(--teal); }
.gauge-label.c { fill: var(--cobre); }
.gauge-label.f { fill: rgba(245, 242, 236, 0.45); }

/* scroll hint */
.scroll-hint {
  position: absolute; left: 48px; bottom: 36px; z-index: 2;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase;
  color: rgba(245,242,236,0.35);
  display: flex; align-items: center; gap: 10px;
}
.scroll-hint .bar {
  width: 40px; height: 1px; background: rgba(245,242,236,0.3); position: relative; overflow: hidden;
}
.scroll-hint .bar::after {
  content: ""; position: absolute; inset: 0; width: 40%;
  background: var(--cobre); animation: slide 2.4s var(--ease) infinite;
}
@keyframes slide { 0% { transform: translateX(-100%); } 100% { transform: translateX(250%); } }

/* ============================================================
   FAIXA DE NÚMEROS (setor)
   ============================================================ */
#contexto {
  background: var(--petroleo);
  padding: 96px 0;
  border-top: 1px solid var(--line-dark);
}
.contexto-intro {
  max-width: 60ch; margin-bottom: 72px;
}
.contexto-intro p {
  font-family: 'Spectral', serif; font-weight: 300;
  font-size: var(--step-2); line-height: 1.4;
  color: var(--offwhite);
}
.contexto-intro p span { color: var(--cobre); font-style: italic; }

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line-dark);
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}
.stat { background: var(--petroleo); padding: 40px 32px 40px 0; }
.stat .num {
  font-family: 'Spectral', serif; font-weight: 300;
  font-size: var(--step-3); color: var(--offwhite);
  line-height: 1; letter-spacing: -0.02em;
}
.stat .num small { font-size: 0.45em; color: var(--cobre); margin-left: 6px; }
.stat .desc {
  font-family: 'IBM Plex Mono', monospace;
  font-size: var(--step--1); color: rgba(245,242,236,0.55);
  line-height: 1.6; margin-top: 18px; max-width: 30ch;
}

/* imagem de fundo opcional (degrada para cor sólida se ausente) */
#contexto { position: relative; }
.section-bg {
  position: absolute; inset: 0; z-index: 0;
  background-size: cover; background-position: center;
  filter: grayscale(100%) contrast(1.05);
  opacity: 0.10; pointer-events: none;
}
#contexto > .container { position: relative; z-index: 1; }

/* definição de "cota" — torna o conceito explícito */
.cota-def {
  margin-top: 56px; max-width: 46ch;
  font-family: 'IBM Plex Mono', monospace;
  font-size: var(--step--1); line-height: 1.9;
  color: rgba(245, 242, 236, 0.5); letter-spacing: 0.02em;
}
.cota-def b { color: var(--cobre); font-weight: 400; text-transform: uppercase; letter-spacing: 0.16em; }
.cota-def i { color: var(--teal); font-style: normal; }

/* ============================================================
   SERVIÇOS
   ============================================================ */
#servicos { background: var(--offwhite); padding: 140px 0; }

.section-head {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 40px; align-items: end; margin-bottom: 80px;
}
.section-head .label { margin-bottom: 24px; }
.section-title {
  font-family: 'Spectral', serif; font-weight: 300;
  font-size: var(--step-3); color: var(--petroleo);
  line-height: 1.1; letter-spacing: -0.01em;
}
.section-head .head-note {
  font-family: 'Spectral', serif; font-style: italic; font-weight: 300;
  font-size: var(--step-0); color: rgba(28,28,28,0.6);
  line-height: 1.7; max-width: 42ch; align-self: end;
}

.servicos-list { border-top: 1px solid var(--line-light); }
.card-servico {
  display: grid;
  grid-template-columns: 80px minmax(0, 4fr) minmax(0, 6fr);
  gap: 32px;
  padding: 44px 0;
  border-bottom: 1px solid var(--line-light);
  position: relative;
  transition: padding-left 0.4s var(--ease);
}
.card-servico::before {
  content: ""; position: absolute; left: -48px; top: 0;
  width: 3px; height: 100%; background: var(--cobre);
  transform: scaleY(0); transform-origin: top;
  transition: transform 0.4s var(--ease);
}
.card-servico:hover { padding-left: 16px; }
.card-servico:hover::before { transform: scaleY(1); }
.card-num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: var(--step--1); color: var(--cobre);
  letter-spacing: 0.1em; padding-top: 8px;
}
.card-title {
  font-family: 'Archivo', sans-serif; font-weight: 600;
  font-size: var(--step-1); color: var(--petroleo);
  letter-spacing: -0.005em; line-height: 1.2;
}
.card-desc {
  font-family: 'Spectral', serif; font-weight: 400;
  font-size: var(--step-0); color: var(--ink);
  line-height: 1.75;
}

/* ============================================================
   ABORDAGEM
   ============================================================ */
#abordagem { background: var(--abisso); padding: 140px 0; position: relative; }
.abordagem-inner {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 96px; align-items: start;
}
.abordagem-left { position: sticky; top: 120px; }
.abordagem-left .label { margin-bottom: 28px; }
.abordagem-title {
  font-family: 'Spectral', serif; font-weight: 300;
  font-size: var(--step-3); color: var(--offwhite);
  line-height: 1.08; letter-spacing: -0.01em;
}
.abordagem-foto {
  margin-top: 44px; width: 100%; aspect-ratio: 4/5;
  overflow: hidden; position: relative;
}
.abordagem-foto img {
  width: 100%; height: 100%; object-fit: cover;
  filter: grayscale(100%) contrast(1.05);
  opacity: 0.78; transition: transform 1.2s var(--ease), opacity 0.6s var(--ease);
}
.abordagem-foto:hover img { transform: scale(1.04); opacity: 0.9; }
.abordagem-foto figcaption {
  position: absolute; left: 16px; bottom: 14px;
  font-family: 'IBM Plex Mono', monospace; font-size: 10px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: rgba(245,242,236,0.7); z-index: 2;
}
.foto-placeholder {
  width: 100%; height: 100%;
  background:
    repeating-linear-gradient(45deg, rgba(176,141,87,0.04) 0 2px, transparent 2px 9px),
    var(--abisso-soft);
  border: 1px solid rgba(176,141,87,0.18);
  display: flex; align-items: center; justify-content: center;
}
.foto-placeholder span {
  font-family: 'IBM Plex Mono', monospace; font-size: 10px;
  color: rgba(245,242,236,0.35); text-transform: uppercase;
  letter-spacing: 0.18em; text-align: center; line-height: 2; padding: 0 24px;
}

.abordagem-right { padding-top: 60px; }
.abordagem-text {
  font-family: 'Spectral', serif; font-weight: 400;
  font-size: var(--step-1); color: rgba(245,242,236,0.82);
  line-height: 1.75; max-width: 48ch;
}
.abordagem-text p + p { margin-top: 28px; }
.abordagem-text strong { color: var(--offwhite); font-weight: 400; }
.abordagem-quote {
  font-family: 'Spectral', serif; font-weight: 300; font-style: italic;
  font-size: var(--step-2); color: var(--cobre);
  border-left: 2px solid var(--cobre);
  padding-left: 32px; margin-top: 64px;
  max-width: 28ch; line-height: 1.35;
}

/* ============================================================
   SOBRE
   ============================================================ */
#sobre { background: var(--offwhite); padding: 140px 0; }
.sobre-inner {
  display: grid; grid-template-columns: 1.2fr 0.8fr;
  gap: 96px; align-items: center;
}
.sobre-content .label { margin-bottom: 28px; }
.sobre-title {
  font-family: 'Spectral', serif; font-weight: 300;
  font-size: var(--step-3); color: var(--petroleo);
  margin-bottom: 36px; line-height: 1.1; letter-spacing: -0.01em;
}
.sobre-text {
  font-family: 'Spectral', serif; font-weight: 400;
  font-size: var(--step-1); color: var(--ink); line-height: 1.75; max-width: 50ch;
}
.sobre-text p + p { margin-top: 24px; }
.sobre-text .accent { color: var(--teal); font-style: italic; }
.sobre-meta {
  margin-top: 48px; padding-top: 28px;
  border-top: 1px solid var(--line-light);
  display: flex; gap: 56px; flex-wrap: wrap;
}
.sobre-meta dt {
  font-family: 'IBM Plex Mono', monospace; font-size: 10px;
  text-transform: uppercase; letter-spacing: 0.18em; color: var(--teal);
  margin-bottom: 8px;
}
.sobre-meta dd {
  font-family: 'Archivo', sans-serif; font-weight: 500;
  font-size: 15px; color: var(--petroleo);
}

.sobre-foto-wrap {
  width: 100%; aspect-ratio: 3/4; overflow: hidden; position: relative;
}
.sobre-foto-wrap img {
  width: 100%; height: 100%; object-fit: cover;
  filter: grayscale(70%) contrast(1.03);
}
.sobre-foto-wrap .foto-placeholder { border-color: rgba(14,58,67,0.15); background:
  repeating-linear-gradient(45deg, rgba(14,58,67,0.03) 0 2px, transparent 2px 9px), #ece8df; }
.sobre-foto-wrap .foto-placeholder span { color: rgba(14,58,67,0.4); }
.sobre-foto-caption {
  margin-top: 16px; font-family: 'IBM Plex Mono', monospace;
  font-size: 11px; color: var(--teal); letter-spacing: 0.12em; text-transform: uppercase;
}

/* ============================================================
   CTA FINAL
   ============================================================ */
#cta-final {
  background: var(--petroleo); padding: 120px 0; text-align: center;
  position: relative; overflow: hidden;
}
#cta-final .section-bg { opacity: 0.14; }
#cta-final > .container { position: relative; z-index: 1; }
#cta-final::before {
  content: ""; position: absolute; left: 50%; top: 0; transform: translateX(-50%);
  width: 1px; height: 64px; background: linear-gradient(180deg, var(--cobre), transparent);
}
.cta-final-title {
  font-family: 'Spectral', serif; font-weight: 300;
  font-size: var(--step-3); color: var(--offwhite);
  line-height: 1.15; max-width: 18ch; margin: 0 auto 40px;
}
.cta-final-title em { font-style: italic; color: var(--cobre); }
.btn-primary {
  display: inline-flex; align-items: center; gap: 14px;
  font-family: 'Archivo', sans-serif; font-weight: 500; font-size: 12px;
  text-transform: uppercase; letter-spacing: 0.16em;
  color: var(--abisso); background: var(--cobre);
  padding: 18px 40px; text-decoration: none;
  transition: background 0.3s var(--ease), gap 0.3s var(--ease);
}
.btn-primary:hover { background: var(--offwhite); gap: 22px; }

/* ============================================================
   FOOTER
   ============================================================ */
footer { background: var(--abisso); padding: 64px 0 40px; }
.footer-top {
  display: flex; align-items: flex-start; justify-content: space-between;
  padding-bottom: 48px; border-bottom: 1px solid var(--line-dark); gap: 40px; flex-wrap: wrap;
}
.footer-brand { display: flex; align-items: center; gap: 16px; max-width: 36ch; }
.footer-brand img { width: 40px; height: 40px; }
.footer-brand p {
  font-family: 'Spectral', serif; font-style: italic; font-weight: 300;
  font-size: 15px; color: rgba(245,242,236,0.6); line-height: 1.5;
}
.footer-links { display: flex; gap: 64px; flex-wrap: wrap; }
.footer-col h4 {
  font-family: 'IBM Plex Mono', monospace; font-size: 10px;
  text-transform: uppercase; letter-spacing: 0.18em; color: var(--teal); margin-bottom: 16px;
}
.footer-col a, .footer-col span {
  display: block; font-family: 'Archivo', sans-serif; font-weight: 400;
  font-size: 13px; color: rgba(245,242,236,0.7); text-decoration: none;
  margin-bottom: 10px; transition: color 0.25s var(--ease);
}
.footer-col a:hover { color: var(--cobre); }
.footer-bottom {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 28px; gap: 16px; flex-wrap: wrap;
}
.footer-copy {
  font-family: 'IBM Plex Mono', monospace; font-size: 10px;
  color: rgba(245,242,236,0.35); letter-spacing: 0.12em;
}
.footer-cota {
  font-family: 'IBM Plex Mono', monospace; font-size: 10px;
  color: rgba(176,141,87,0.5); letter-spacing: 0.12em;
}

/* ============================================================
   CONTATO
   ============================================================ */
.page-contato .contato-hero {
  background: var(--abisso); padding: 200px 0 140px; min-height: 100vh;
}
.contato-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 96px; align-items: start; }
.contato-label { margin-bottom: 28px; }
.contato-title {
  font-family: 'Spectral', serif; font-weight: 300;
  font-size: var(--step-3); color: var(--offwhite);
  line-height: 1.08; margin-bottom: 24px; letter-spacing: -0.01em;
}
.contato-title em { font-style: italic; color: var(--cobre); }
.contato-sub {
  font-family: 'Spectral', serif; font-style: italic; font-weight: 300;
  font-size: var(--step-1); color: rgba(245,242,236,0.65);
  line-height: 1.6; max-width: 40ch; margin-bottom: 56px;
}
.contato-dados { display: grid; gap: 36px; }
.contato-dado-label {
  font-family: 'IBM Plex Mono', monospace; font-size: 10px;
  text-transform: uppercase; letter-spacing: 0.18em; color: var(--teal); margin-bottom: 10px;
}
.contato-dado-val {
  font-family: 'Spectral', serif; font-weight: 300; font-size: var(--step-1);
  color: var(--offwhite);
}
.contato-dado-val a { color: var(--offwhite); text-decoration: none; border-bottom: 1px solid var(--cobre); transition: color 0.25s var(--ease); }
.contato-dado-val a:hover { color: var(--cobre); }

/* Formulário */
.form-field { margin-bottom: 40px; }
.form-field label {
  display: block; font-family: 'IBM Plex Mono', monospace; font-size: 10px;
  text-transform: uppercase; letter-spacing: 0.18em; color: var(--teal); margin-bottom: 12px;
}
.form-field input, .form-field textarea {
  width: 100%; border: none; border-bottom: 1px solid rgba(245,242,236,0.25);
  background: transparent; font-family: 'Spectral', serif; font-size: var(--step-1);
  color: var(--offwhite); padding: 8px 0; outline: none; resize: none;
  transition: border-color 0.3s var(--ease);
}
.form-field input::placeholder, .form-field textarea::placeholder { color: rgba(245,242,236,0.25); }
.form-field input:focus, .form-field textarea:focus { border-color: var(--cobre); }
.form-field textarea { min-height: 90px; }
.btn-enviar {
  display: inline-flex; align-items: center; gap: 14px;
  font-family: 'Archivo', sans-serif; font-weight: 500; font-size: 12px;
  text-transform: uppercase; letter-spacing: 0.16em;
  color: var(--abisso); background: var(--cobre); border: none;
  padding: 18px 44px; cursor: pointer;
  transition: background 0.3s var(--ease), gap 0.3s var(--ease);
}
.btn-enviar:hover { background: var(--offwhite); gap: 22px; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 980px) {
  .abordagem-inner, .sobre-inner, .contato-grid,
  .section-head, .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .abordagem-left { position: static; }
  .stats { grid-template-columns: 1fr; }
  .stat { padding: 32px 0; border-bottom: 1px solid var(--line-dark); }
  .hero-cota { display: none; }
  .sobre-inner { grid-template-columns: 1fr; }
  .sobre-foto-wrap { max-width: 320px; }
}

@media (max-width: 768px) {
  header, .mobile-nav { padding-left: 24px; padding-right: 24px; }
  .container { padding: 0 24px; }
  nav { display: none; }
  .hamburger { display: flex; }

  /* Hero mobile */
  #hero { padding-bottom: 80px; min-height: 100svh; }
  .scroll-hint { left: 24px; }
  .hero-content { padding-top: 100px; }

  /* Seções */
  #contexto, #servicos, #abordagem, #sobre, #cta-final { padding: 80px 0; }

  /* Serviços */
  .card-servico { grid-template-columns: 1fr; gap: 8px; padding: 28px 0; }
  .card-servico:hover { padding-left: 0; }
  .card-servico::before { display: none; }
  .card-num { padding-top: 0; }

  /* Abordagem — imagem oculta em mobile pequeno */
  .abordagem-foto-wrap { display: none; }

  /* Sobre — imagem menor */
  .sobre-foto-wrap { max-width: 100%; }

  /* Contexto stats em 2 col */
  .stats { grid-template-columns: 1fr 1fr; }
  .stat { padding: 24px 0; border-bottom: 1px solid var(--line-dark); }

  /* CTA */
  .cta-body { font-size: clamp(1.5rem, 7vw, 2.2rem); }

  /* Footer */
  .footer-top { flex-direction: column; gap: 40px; }
  .footer-links { flex-direction: column; gap: 24px; }

  /* Contato */
  .page-contato .contato-hero { padding: 120px 0 80px; }

  /* Touch targets maiores */
  .btn-enviar { width: 100%; justify-content: center; padding: 18px 24px; }
  .form-field input, .form-field textarea { font-size: 16px; } /* evita zoom iOS */
}