/* ============================================================
   BR TEC Eletroerosão a Fio — Design System
   Base: manual de melhorias (SEO, copy e design)
   ============================================================ */

:root {
  --c-primary: #4454b9;
  --c-primary-dark: #35449e;
  --c-primary-darker: #232d68;
  --c-primary-soft: #eff3fc;
  --c-accent: #6CFFB0;
  --c-whatsapp: #25d366;
  --c-whatsapp-dark: #1da851;
  --c-warn: #f1c40f;
  --c-text: #22273f;
  --c-muted: #5b6281;
  --c-line: #e3e7f3;
  --c-bg: #ffffff;
  --c-bg-soft: #f5f7fa;
  --c-dark: #161c47;

  --font-display: "Montserrat", "Inter", Arial, sans-serif;
  --font-body: "Inter", "Segoe UI", Arial, sans-serif;

  --radius: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 2px 8px rgba(22, 28, 71, 0.08);
  --shadow-md: 0 10px 30px rgba(22, 28, 71, 0.12);
  --shadow-lg: 0 20px 50px rgba(22, 28, 71, 0.18);

  --container: 1180px;
  --header-h: 84px;
}

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

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--c-text);
  background: var(--c-bg);
}

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

a {
  color: var(--c-primary);
  text-decoration: none;
  overflow-wrap: break-word;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid rgba(68, 84, 185, 0.45);
  outline-offset: 2px;
}

a:hover {
  color: var(--c-primary-dark);
}

ul[class] {
  list-style: none;
  margin: 0;
  padding: 0;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  line-height: 1.2;
  margin: 0 0 0.6em;
  color: var(--c-text);
}

h1 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); font-weight: 700; }
h3 { font-size: 1.25rem; font-weight: 700; }
h4 { font-size: 1.05rem; font-weight: 700; }

p { margin: 0 0 1em; }

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 20px;
}

.section {
  padding-block: clamp(3rem, 7vw, 5.5rem);
}

.section-soft { background: var(--c-bg-soft); }
.section-dark { background: var(--c-primary-darker); color: #fff; }

.eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 0.5rem;
}

.section-dark .eyebrow { color: var(--c-accent); }

.section-head {
  max-width: 720px;
  margin-bottom: 2.5rem;
}

.section-head.center { margin-inline: auto; text-align: center; }

.text-center { text-align: center; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ============ Botões ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  border: 0;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--c-primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover { background: var(--c-primary-dark); color: #fff; }

.btn-whatsapp {
  background: var(--c-whatsapp);
  color: #fff;
  box-shadow: 0 8px 20px rgba(37, 211, 102, 0.35);
}

.btn-whatsapp:hover { background: var(--c-whatsapp-dark); color: #fff; }

.btn-outline {
  background: transparent;
  color: var(--c-primary);
  border: 2px solid var(--c-primary);
}

.btn-outline:hover { background: var(--c-primary-soft); color: var(--c-primary); }

.btn-light {
  background: #fff;
  color: var(--c-primary);
  box-shadow: var(--shadow-md);
}

.btn-light:hover { background: var(--c-primary-soft); color: var(--c-primary); }

.btn-lg { padding: 1rem 2.1rem; font-size: 1.05rem; }

.btn svg { flex: none; }

/* ============ Topbar ============ */
.topbar {
  background: var(--c-dark);
  color: #cfd6ff;
  font-size: 0.85rem;
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.5rem;
  flex-wrap: wrap;
}

.topbar a { color: #fff; }
.topbar a:hover { color: var(--c-accent); }

.topbar-info {
  display: flex;
  gap: 1.4rem;
  align-items: center;
  flex-wrap: wrap;
}

.topbar-info span {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.topbar-info svg { flex: none; }

.topbar-cta {
  background: var(--c-whatsapp);
  color: #fff;
  font-weight: 700;
  padding: 0.35rem 1rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.topbar-cta:hover { background: var(--c-whatsapp-dark); color: #fff; }

/* ============ Header / Navegação ============ */
.header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: #fff;
  border-bottom: 1px solid var(--c-line);
  transition: box-shadow 0.2s ease;
}

.header.scrolled { box-shadow: var(--shadow-sm); }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--header-h);
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--c-primary-darker);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
}

.nav-logo img { height: 68px; width: auto; }

.nav-logo:hover { color: var(--c-primary); }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}

.nav-menu a {
  padding: 0.5rem 0.5rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--c-text);
  white-space: nowrap;
}

.nav-menu a:hover { color: var(--c-primary); background: var(--c-primary-soft); }

.nav-menu a.active { color: var(--c-primary); background: var(--c-primary-soft); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  color: var(--c-text);
}

.nav-toggle:hover { background: var(--c-primary-soft); }

.nav-toggle .close-icon { display: none; }

body.nav-open .nav-toggle .open-icon { display: none; }
body.nav-open .nav-toggle .close-icon { display: block; }

/* ============ Hero (Home) ============ */
.hero {
  position: relative;
  background: linear-gradient(120deg, var(--c-primary-darker) 0%, var(--c-primary) 70%, #5464cc 100%);
  color: #fff;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 85% 15%, rgba(255, 255, 255, 0.08), transparent 40%),
    repeating-linear-gradient(0deg, transparent, transparent 79px, rgba(255, 255, 255, 0.04) 80px);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 2.5rem;
  padding-block: clamp(3rem, 6vw, 5rem);
}

.hero h1 { color: #fff; margin-bottom: 0.4em; }

.hero .lead {
  font-size: 1.15rem;
  color: #d5dbff;
  max-width: 54ch;
  margin-bottom: 1.8rem;
}

.hero-ctas {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
}

.hero-proof {
  margin-top: 2rem;
  display: flex;
  align-items: center;
  gap: 1.2rem;
  color: #cfd6ff;
  font-size: 0.9rem;
}

.hero-proof strong { color: #fff; display: block; }

.hero-art img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.hero-badges {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  padding-block: 0 2rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: #fff;
  padding: 0.5rem 1.1rem;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 600;
}

.badge svg { flex: none; color: var(--c-accent); }

/* ============ Page header (internas) ============ */
.page-hero {
  background: linear-gradient(120deg, var(--c-primary-darker), var(--c-primary));
  color: #fff;
  padding-block: clamp(2.5rem, 5vw, 4rem);
}

.page-hero h1 { color: #fff; margin-bottom: 0.3em; }
.page-hero p { color: #d5dbff; max-width: 62ch; margin: 0; }

.breadcrumb {
  display: flex;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: #b9c4ff;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.breadcrumb a { color: #fff; }
.breadcrumb a:hover { color: var(--c-accent); }
.breadcrumb span { opacity: 0.7; }

/* ============ Cards de serviço ============ */
.grid-services {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1.4rem;
}

.service-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  padding: 1.8rem 1.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
  color: var(--c-text);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  color: var(--c-text);
}

.service-card .icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: var(--c-primary-soft);
  color: var(--c-primary);
  display: grid;
  place-items: center;
}

.service-card h3 { margin: 0.4rem 0 0; }
.service-card p { color: var(--c-muted); font-size: 0.95rem; margin-bottom: 0.4rem; }

.card-link {
  margin-top: auto;
  font-weight: 700;
  font-size: 0.92rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--c-primary);
}

.service-card:hover .card-link { gap: 0.7rem; }

/* ============ Diferenciais ============ */
.grid-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.4rem;
}

.feature {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.feature .icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--c-primary-soft);
  color: var(--c-primary);
  display: grid;
  place-items: center;
  margin-bottom: 0.9rem;
}

.feature h3 { font-size: 1.05rem; margin-bottom: 0.4rem; }
.feature p { color: var(--c-muted); font-size: 0.92rem; margin: 0; }

/* ============ Stats ============ */
.grid-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1.5rem;
  text-align: center;
}

.stat strong {
  display: block;
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--c-accent);
}

.stat span { color: #cfd6ff; font-size: 0.9rem; }

/* ============ Processo ============ */
.grid-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.4rem;
}

.step {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  padding: 1.7rem;
  position: relative;
}

.step .num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 2rem;
  color: var(--c-primary-soft);
  line-height: 1;
  display: block;
  margin-bottom: 0.6rem;
}

.step h3 { font-size: 1.05rem; }
.step p { color: var(--c-muted); font-size: 0.92rem; margin: 0; }

/* ============ Depoimentos ============ */
.grid-testimonials {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.4rem;
}

.testimonial {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  padding: 1.6rem;
  box-shadow: var(--shadow-sm);
}

.testimonial .stars { color: var(--c-warn); margin-bottom: 0.8rem; letter-spacing: 2px; }

.testimonial blockquote {
  margin: 0 0 1rem;
  color: var(--c-text);
  font-size: 0.98rem;
}

.testimonial cite {
  font-style: normal;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--c-primary);
}

.testimonial cite small { display: block; font-weight: 400; color: var(--c-muted); }

/* ============ FAQ ============ */
.faq-list {
  max-width: 800px;
  margin-inline: auto;
  display: grid;
  gap: 0.8rem;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.faq-item.open { border-color: var(--c-primary); box-shadow: var(--shadow-sm); }

.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  text-align: left;
  background: none;
  border: 0;
  padding: 1.1rem 1.3rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--c-text);
  cursor: pointer;
}

.faq-q .chev { flex: none; color: var(--c-primary); transition: transform 0.2s ease; }

.faq-item.open .faq-q .chev { transform: rotate(180deg); }

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.28s ease;
}

.faq-a-inner {
  padding: 0 1.3rem 1.2rem;
  color: var(--c-muted);
  font-size: 0.95rem;
}

/* ============ CTA band ============ */
.cta-band {
  background: linear-gradient(120deg, var(--c-primary-darker), var(--c-primary));
  color: #fff;
  text-align: center;
  padding-block: clamp(3rem, 6vw, 4.5rem);
}

.cta-band h2 { color: #fff; }
.cta-band p { color: #d5dbff; max-width: 58ch; margin: 0 auto 1.8rem; }
.cta-band .btn-actions { display: flex; gap: 0.9rem; justify-content: center; flex-wrap: wrap; }

/* ============ Formulário ============ */
.contact-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2.5rem;
  align-items: start;
}

.form-card {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2.2rem);
  box-shadow: var(--shadow-sm);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group { margin-bottom: 1rem; }

.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.88rem;
  margin-bottom: 0.35rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--c-line);
  border-radius: 10px;
  font-family: inherit;
  font-size: 1rem;
  color: var(--c-text);
  background: #fff;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(68, 84, 185, 0.15);
}

.form-group textarea { min-height: 130px; resize: vertical; }

.form-group input[type="file"] { padding: 0.5rem; }

.form-hint { font-size: 0.82rem; color: var(--c-muted); margin-top: 0.3rem; }

.form-note { font-size: 0.82rem; color: var(--c-muted); margin-top: 0.8rem; }

.form-ok {
  display: none;
  margin-top: 1rem;
  padding: 0.9rem 1.1rem;
  border-radius: 10px;
  background: #e9fbef;
  border: 1px solid #a5e8c0;
  color: #0d6b33;
  font-weight: 600;
  font-size: 0.92rem;
}

.form-ok.show { display: block; }

/* ============ Informações de contato ============ */
.info-card {
  background: var(--c-primary-soft);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 1.2rem;
}

.info-card h3 { color: var(--c-primary-darker); }

.info-list li {
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
  padding-block: 0.6rem;
  border-bottom: 1px solid rgba(68, 84, 185, 0.14);
}

.info-list li:last-child { border-bottom: 0; }

.info-list .icon {
  flex: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: #fff;
  color: var(--c-primary);
  display: grid;
  place-items: center;
}

.info-list strong { display: block; font-size: 0.9rem; }
.info-list span, .info-list a { color: var(--c-muted); font-size: 0.92rem; }
.info-list a:hover { color: var(--c-primary); }

.map-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--c-line);
  line-height: 0;
}

.map-frame iframe { width: 100%; height: 260px; border: 0; }

/* ============ Galeria ============ */
.grid-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.2rem;
}

.gallery-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  border: 1px solid var(--c-line);
  background: var(--c-bg-soft);
}

.gallery-item img { width: 100%; aspect-ratio: 3/2; object-fit: cover; transition: transform 0.3s ease; }

.gallery-item:hover img { transform: scale(1.05); }

.gallery-item figcaption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 1.6rem 1rem 0.8rem;
  background: linear-gradient(transparent, rgba(22, 28, 71, 0.85));
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(13, 17, 46, 0.92);
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 2rem;
}

.lightbox.open { display: flex; }

.lightbox img {
  max-width: 90vw;
  max-height: 78vh;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}

.lightbox figcaption { color: #cfd6ff; margin-top: 1rem; text-align: center; }

.lightbox-close {
  position: absolute;
  top: 1.2rem;
  right: 1.4rem;
  background: rgba(255, 255, 255, 0.12);
  border: 0;
  color: #fff;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  font-size: 1.4rem;
  cursor: pointer;
}

.lightbox-close:hover { background: rgba(255, 255, 255, 0.25); }

/* ============ Conteúdo de serviço (página interna) ============ */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: center;
}

.split img { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius);
}

.table-scroll .spec-table { min-width: 300px; }

.spec-table th, .spec-table td {
  text-align: left;
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--c-line);
}

.spec-table th { background: var(--c-primary-soft); color: var(--c-primary-darker); }

.spec-table tr:last-child td { border-bottom: 0; }

.checks li {
  position: relative;
  padding-left: 1.9rem;
  margin-bottom: 0.7rem;
  color: var(--c-text);
}

.checks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.28em;
  width: 1.15rem;
  height: 1.15rem;
  background: var(--c-primary);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='4'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center/contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='4'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center/contain no-repeat;
}

/* ============ 404 ============ */
.error-wrap { text-align: center; padding-block: clamp(4rem, 10vw, 7rem); }
.error-code {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(6rem, 18vw, 12rem);
  line-height: 1;
  background: linear-gradient(120deg, var(--c-primary-darker), var(--c-primary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ============ Footer ============ */
.footer {
  background: var(--c-dark);
  color: #cfd6ff;
  font-size: 0.92rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 2rem;
  padding-block: 3rem;
}

.footer h4 {
  color: #fff;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}

.footer a { color: #cfd6ff; }
.footer a:hover { color: var(--c-accent); }

.footer-brand img {
  height: 44px;
  width: auto;
  margin-bottom: 0.9rem;
  box-sizing: content-box;
  background: #fff;
  border-radius: 12px;
  padding: 0.5rem 0.9rem;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}
.footer-brand p { max-width: 36ch; }

.footer-links li { margin-bottom: 0.5rem; }

.footer-contact li {
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  margin-bottom: 0.7rem;
}

.footer-contact svg { flex: none; margin-top: 0.18em; color: var(--c-accent); }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-block: 1.2rem;
  font-size: 0.82rem;
  color: #8b96d8;
}

.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ============ WhatsApp flutuante ============ */
.wa-float {
  position: fixed;
  right: 20px;
  bottom: calc(20px + env(safe-area-inset-bottom));
  z-index: 70;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--c-whatsapp);
  color: #fff;
  display: grid;
  place-items: center;
  box-shadow: 0 10px 24px rgba(37, 211, 102, 0.45);
  transition: transform 0.15s ease;
}

.wa-float:hover { transform: scale(1.08); color: #fff; }

.wa-float svg { width: 32px; height: 32px; }

/* ============ Reveal on scroll ============ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal.visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ============ Responsivo ============ */
@media (max-width: 1250px) {
  .nav-actions .btn { display: none; }
  .nav { gap: 0.5rem; }
  .nav-logo img { height: 58px; }
}

@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-art { max-width: 520px; margin-inline: auto; }
  .hero-art img { box-shadow: none; }
  .contact-grid { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }

  .nav-toggle { display: inline-flex; }

  body.nav-open { overflow: hidden; }

  .nav-menu {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    background: #fff;
    border-bottom: 1px solid var(--c-line);
    box-shadow: var(--shadow-md);
    padding: 1rem;
    padding-bottom: calc(1rem + env(safe-area-inset-bottom));
    gap: 0.2rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
  }

  body.nav-open .nav-menu {
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
  }

  @supports (max-height: 100dvh) {
    body.nav-open .nav-menu { max-height: calc(100dvh - var(--header-h)); }
  }

  .nav-menu a { padding: 0.9rem 1rem; font-size: 1rem; }

  .nav-actions .btn { display: none; }
}

/* Compacta a topbar no celular: mantém telefone e botão de orçamento */
@media (max-width: 720px) {
  .topbar-info span:nth-child(1),
  .topbar-info span:nth-child(3) { display: none; }
  .topbar-inner { justify-content: space-between; }
  .topbar-info { gap: 1rem; }
}

@media (max-width: 560px) {
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .topbar-info { justify-content: flex-start; text-align: left; }
  .hero-inner { padding-top: 2rem; }
  .hero h1 { font-size: clamp(1.7rem, 8vw, 2.2rem); }
  .hero .lead { font-size: 1rem; }
  .hero-proof {
    flex-direction: column;
    align-items: stretch;
    gap: 0.9rem;
  }
  .hero-proof > div { padding-bottom: 0.9rem; border-bottom: 1px solid rgba(255, 255, 255, 0.18); }
  .hero-proof > div:last-child { padding-bottom: 0; border-bottom: 0; }
  .hero-ctas,
  .btn-actions { flex-direction: column; align-items: stretch; }
  .hero-ctas .btn,
  .btn-actions .btn { width: 100%; justify-content: center; }
  .cta-band p { font-size: 0.98rem; }
  .footer-contact a { overflow-wrap: anywhere; }
  .grid-stats { grid-template-columns: repeat(2, 1fr); gap: 1.4rem; }
  .grid-services { grid-template-columns: 1fr; }
  .map-frame iframe { height: 220px; }
}