/* ============================================================
   3W ENGENHARIA E CONSTRUÇÃO — Folha de Estilos Principal
   ============================================================ */

/* ── Variáveis ─────────────────────────────────────────────── */
:root {
  --primary:       #CC1B20;
  --primary-dark:  #A01519;
  --primary-light: #E53E3E;
  --dark:          #1A1A1A;
  --dark-2:        #2D2D2D;
  --dark-3:        #3D3D3D;
  --gray:          #6B7280;
  --gray-light:    #9CA3AF;
  --bg-light:      #F5F5F5;
  --bg-mid:        #EBEBEB;
  --white:         #FFFFFF;
  --font-h:        'Montserrat', sans-serif;
  --font-b:        'Open Sans', sans-serif;
  --max-w:         1200px;
  --header-h:      80px;
  --r:             8px;
  --r-lg:          16px;
  --shadow:        0 4px 20px rgba(0,0,0,.08);
  --shadow-md:     0 6px 30px rgba(0,0,0,.12);
  --shadow-lg:     0 12px 50px rgba(0,0,0,.18);
  --trans:         all .3s ease;
}

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: var(--font-b);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--dark-2);
  background: var(--white);
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

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

/* ── Section tag (chip acima do título) ─────────────────────── */
.section-tag {
  display: block;
  width: fit-content;
  margin: 0 auto 16px;
  font-family: var(--font-h);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--primary);
  background: rgba(204,27,32,.08);
  border: 1px solid rgba(204,27,32,.2);
  border-radius: 100px;
  padding: 5px 16px;
}

/* Seções com tag alinhada à esquerda */
.hero-content .section-tag,
.about-text .section-tag,
.contact-info .section-tag {
  margin-left: 0;
  margin-right: 0;
}

/* ── Section header (centrado) ──────────────────────────────── */
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px;
}

.section-header h2 { margin-bottom: 16px; }

.section-header p {
  color: var(--gray);
  font-size: 1.05rem;
}

/* ── Tipografia ─────────────────────────────────────────────── */
h1, h2, h3, h4 {
  font-family: var(--font-h);
  line-height: 1.2;
  color: var(--dark);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); font-weight: 700; }
h3 { font-size: clamp(1.1rem, 2vw, 1.35rem); font-weight: 700; }
h4 { font-size: 1rem; font-weight: 700; }

/* ── Botões ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--r);
  font-family: var(--font-h);
  font-size: .9rem;
  font-weight: 700;
  letter-spacing: .04em;
  transition: var(--trans);
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  border: 2px solid var(--primary);
}
.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(204,27,32,.35);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,.65);
}
.btn-outline:hover {
  background: var(--white);
  color: var(--primary);
  border-color: var(--white);
  transform: translateY(-2px);
}

.btn-outline-red {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline-red:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
}

/* ── Animações de entrada ───────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ================================================================
   HEADER
   ================================================================ */
#header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-h);
  background: var(--white);
  border-bottom: 1px solid rgba(0,0,0,.07);
  z-index: 1000;
  transition: box-shadow .3s ease;
}

#header.scrolled {
  box-shadow: 0 4px 24px rgba(0,0,0,.12);
}

#header .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo img {
  height: 54px;
  width: auto;
  object-fit: contain;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-desktop a {
  font-family: var(--font-h);
  font-size: .85rem;
  font-weight: 600;
  color: var(--dark-2);
  letter-spacing: .04em;
  transition: color .25s ease;
  position: relative;
  padding-bottom: 4px;
}

.nav-desktop a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width .3s ease;
}

.nav-desktop a:hover {
  color: var(--primary);
}
.nav-desktop a:hover::after { width: 100%; }

.btn-header {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 22px;
  background: var(--primary);
  color: var(--white);
  border-radius: var(--r);
  font-family: var(--font-h);
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .04em;
  transition: var(--trans);
  white-space: nowrap;
}
.btn-header:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(204,27,32,.35);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  border-radius: 6px;
  transition: background .2s;
}
.menu-toggle:hover { background: var(--bg-light); }

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: var(--trans);
}
.menu-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}
.menu-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Mobile nav ─────────────────────────────────────────────── */
#navMenu {
  position: fixed;
  top: var(--header-h);
  left: 0;
  width: 100%;
  background: var(--white);
  border-bottom: 1px solid rgba(0,0,0,.08);
  padding: 16px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  z-index: 999;
  transform: translateY(-110%);
  transition: transform .35s ease;
  box-shadow: 0 8px 24px rgba(0,0,0,.12);
}
#navMenu.open { transform: translateY(0); }

#navMenu a {
  font-family: var(--font-h);
  font-size: .9rem;
  font-weight: 600;
  color: var(--dark-2);
  padding: 12px 8px;
  border-bottom: 1px solid var(--bg-mid);
  transition: color .25s;
}
#navMenu a:last-of-type { border-bottom: none; }
#navMenu a:hover { color: var(--primary); }

.btn-whatsapp-mobile {
  margin-top: 12px;
  padding: 13px 20px;
  background: var(--primary);
  color: var(--white) !important;
  border-radius: var(--r);
  text-align: center;
  font-weight: 700 !important;
  border-bottom: none !important;
}
.btn-whatsapp-mobile:hover {
  background: var(--primary-dark) !important;
  color: var(--white) !important;
}

/* ================================================================
   HERO
   ================================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  padding-top: var(--header-h);
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/hero-bg.jpg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(26,26,26,0.88) 0%,
    rgba(160,21,25,0.72) 100%
  );
  z-index: 1;
}

/* Geometric pattern overlay */
.hero-overlay::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero .container { position: relative; z-index: 2; }

.hero-content {
  max-width: 760px;
  padding: 80px 0;
}

.hero-content .section-tag {
  margin: 0 0 20px;
  background: rgba(255,255,255,.12);
  border-color: rgba(255,255,255,.3);
  color: rgba(255,255,255,.9);
}

.hero-content h1 {
  color: var(--white);
  margin-bottom: 20px;
  text-shadow: 0 2px 20px rgba(0,0,0,.3);
}

.hero-content h2 {
  color: rgba(255,255,255,.85);
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 500;
  margin-bottom: 24px;
  line-height: 1.4;
}

.hero-content p {
  color: rgba(255,255,255,.72);
  font-size: 1.05rem;
  max-width: 580px;
  margin-bottom: 40px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ================================================================
   STATS
   ================================================================ */
.stats {
  background: var(--primary);
  padding: 56px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}

.stat-item {
  text-align: center;
  padding: 24px 16px;
  position: relative;
}

.stat-item + .stat-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 20%;
  height: 60%;
  width: 1px;
  background: rgba(255,255,255,.25);
}

.stat-number {
  font-family: var(--font-h);
  font-size: clamp(2.4rem, 4vw, 3.5rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1;
  margin-bottom: 10px;
}

.stat-number span {
  font-size: .65em;
  vertical-align: super;
}

.stat-label {
  font-family: var(--font-h);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: rgba(255,255,255,.75);
}

/* ================================================================
   SOBRE
   ================================================================ */
.about {
  padding: 100px 0;
  background: var(--white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

.about-text .section-tag { margin: 0 0 16px; }

.about-text h2 {
  margin-bottom: 24px;
}

.about-text p {
  color: var(--gray);
  margin-bottom: 18px;
  font-size: 1rem;
}

.about-text p:last-of-type { margin-bottom: 32px; }

.about-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 32px;
}

.about-highlight {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  background: var(--bg-light);
  border-radius: var(--r);
  border-left: 3px solid var(--primary);
}

.about-highlight-icon {
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.about-highlight h4 {
  font-size: .85rem;
  margin-bottom: 3px;
}

.about-highlight p {
  font-size: .82rem;
  color: var(--gray);
  margin: 0;
}

.about-image-wrap {
  position: relative;
}

.about-image-wrap img {
  width: 100%;
  height: 520px;
  object-fit: cover;
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-lg);
}

.about-badge {
  position: absolute;
  bottom: 32px;
  left: -24px;
  background: var(--primary);
  color: var(--white);
  padding: 20px 28px;
  border-radius: var(--r);
  text-align: center;
  box-shadow: 0 8px 32px rgba(204,27,32,.4);
}

.about-badge span {
  display: block;
  font-size: .75rem;
  font-family: var(--font-h);
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  opacity: .85;
  margin-bottom: 2px;
}

.about-badge strong {
  display: block;
  font-family: var(--font-h);
  font-size: 2.4rem;
  font-weight: 900;
  line-height: 1;
}

/* ================================================================
   SERVIÇOS
   ================================================================ */
.services {
  padding: 100px 0;
  background: var(--bg-light);
}

.services-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.service-card {
  background: var(--white);
  border-radius: var(--r-lg);
  padding: 48px 40px;
  box-shadow: var(--shadow);
  border-top: 4px solid var(--primary);
  transition: var(--trans);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.service-icon {
  width: 64px;
  height: 64px;
  background: rgba(204,27,32,.08);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--primary);
}

.service-card h3 { margin-bottom: 16px; }

.service-card > p {
  color: var(--gray);
  font-size: .95rem;
  margin-bottom: 28px;
}

.service-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.service-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: .92rem;
  color: var(--dark-2);
}

.service-list li::before {
  content: '';
  display: block;
  width: 7px;
  height: 7px;
  background: var(--primary);
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 8px;
}

/* ================================================================
   DIFERENCIAIS
   ================================================================ */
.differentials {
  padding: 100px 0;
  background: var(--white);
}

.diff-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.diff-card {
  padding: 36px 28px;
  background: var(--bg-light);
  border-radius: var(--r-lg);
  transition: var(--trans);
}

.diff-card:hover {
  background: var(--white);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.diff-card-icon {
  width: 52px;
  height: 52px;
  background: rgba(204,27,32,.1);
  border-radius: var(--r);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 20px;
}

.diff-card h3 {
  font-size: 1.05rem;
  margin-bottom: 10px;
}

.diff-card p {
  font-size: .9rem;
  color: var(--gray);
  line-height: 1.65;
}

/* ================================================================
   PORTFÓLIO
   ================================================================ */
.portfolio {
  padding: 100px 0;
  background: var(--dark);
}

.portfolio .section-tag {
  background: rgba(255,255,255,.08);
  border-color: rgba(255,255,255,.2);
  color: rgba(255,255,255,.85);
}

.portfolio .section-header h2 { color: var(--white); }
.portfolio .section-header p { color: var(--gray-light); }

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--r);
  aspect-ratio: 4/3;
  cursor: pointer;
}

.gallery-item.hidden { display: none; }

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .45s ease;
}

.gallery-item:hover img { transform: scale(1.08); }

.gallery-item-overlay {
  position: absolute;
  inset: 0;
  background: rgba(204,27,32,.0);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .35s ease;
}

.gallery-item:hover .gallery-item-overlay {
  background: rgba(204,27,32,.5);
}

.gallery-item-overlay svg {
  color: var(--white);
  opacity: 0;
  transform: scale(.8);
  transition: opacity .3s, transform .3s;
}

.gallery-item:hover .gallery-item-overlay svg {
  opacity: 1;
  transform: scale(1);
}

.gallery-more {
  text-align: center;
  margin-top: 40px;
}

/* ── Lightbox ───────────────────────────────────────────────── */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.92);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s ease;
}

.lightbox.active {
  opacity: 1;
  pointer-events: all;
}

.lightbox img {
  max-width: 90vw;
  max-height: 88vh;
  object-fit: contain;
  border-radius: var(--r);
  box-shadow: 0 20px 80px rgba(0,0,0,.6);
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 24px;
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,.12);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.4rem;
  cursor: pointer;
  transition: background .25s;
}
.lightbox-close:hover { background: rgba(255,255,255,.25); }

.lightbox-prev,
.lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  background: rgba(255,255,255,.12);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  cursor: pointer;
  transition: background .25s;
}
.lightbox-prev { left: 20px; }
.lightbox-next { right: 20px; }
.lightbox-prev:hover,
.lightbox-next:hover { background: var(--primary); }

/* ================================================================
   CLIENTES
   ================================================================ */
.clients {
  padding: 100px 0;
  background: var(--bg-light);
}

.clients-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.client-card {
  background: var(--white);
  border-radius: var(--r);
  padding: 24px 16px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--trans);
  border-bottom: 3px solid transparent;
}

.client-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-bottom-color: var(--primary);
}

.client-initial {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(204,27,32,.1);
  color: var(--primary);
  font-family: var(--font-h);
  font-size: 1.3rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
}

.client-name {
  font-family: var(--font-h);
  font-size: .78rem;
  font-weight: 700;
  color: var(--dark-2);
  text-transform: uppercase;
  letter-spacing: .04em;
  line-height: 1.3;
  margin-bottom: 5px;
}

.client-type {
  font-size: .73rem;
  color: var(--gray-light);
}

/* ================================================================
   HISTÓRIA (TIMELINE)
   ================================================================ */
.history {
  padding: 100px 0;
  background: var(--white);
}

.timeline {
  position: relative;
  max-width: 840px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--primary), rgba(204,27,32,.1));
  transform: translateX(-50%);
}

.timeline-item {
  display: grid;
  grid-template-columns: 1fr 60px 1fr;
  align-items: center;
  gap: 0;
  margin-bottom: 56px;
}

.timeline-item:last-child { margin-bottom: 0; }

.timeline-content {
  padding: 32px;
  background: var(--bg-light);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow);
  transition: var(--trans);
}

.timeline-content:hover {
  box-shadow: var(--shadow-md);
  transform: scale(1.02);
}

.timeline-item:nth-child(odd) .timeline-content {
  grid-column: 1;
}

.timeline-item:nth-child(odd) .timeline-dot {
  grid-column: 2;
}

.timeline-item:nth-child(odd) .timeline-empty {
  grid-column: 3;
}

.timeline-item:nth-child(even) .timeline-empty {
  grid-column: 1;
  order: -1;
}

.timeline-item:nth-child(even) .timeline-dot {
  grid-column: 2;
}

.timeline-item:nth-child(even) .timeline-content {
  grid-column: 3;
}

.timeline-dot {
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

.timeline-dot-inner {
  width: 52px;
  height: 52px;
  background: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-h);
  font-size: .75rem;
  font-weight: 800;
  color: var(--white);
  box-shadow: 0 0 0 6px rgba(204,27,32,.15);
  text-align: center;
  line-height: 1.2;
}

.timeline-year {
  font-family: var(--font-h);
  font-size: .72rem;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: .1em;
  margin-bottom: 8px;
}

.timeline-content h3 { margin-bottom: 10px; }

.timeline-content p {
  font-size: .93rem;
  color: var(--gray);
  line-height: 1.65;
}

/* ================================================================
   MISSÃO / VISÃO / VALORES
   ================================================================ */
.values {
  padding: 100px 0;
  background: linear-gradient(135deg, var(--dark) 0%, #2a0a0b 100%);
  position: relative;
}

.values::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none'%3E%3Cg fill='%23ffffff' fill-opacity='0.025'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.values .container { position: relative; z-index: 1; }

.values .section-tag {
  background: rgba(255,255,255,.08);
  border-color: rgba(255,255,255,.2);
  color: rgba(255,255,255,.8);
}

.values .section-header h2 { color: var(--white); }

.mvv-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
}

.mvv-card {
  padding: 44px 36px;
  border-radius: var(--r-lg);
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  transition: var(--trans);
}

.mvv-card:hover {
  background: rgba(255,255,255,.09);
  border-color: rgba(204,27,32,.5);
  transform: translateY(-4px);
}

.mvv-card-icon {
  width: 52px;
  height: 52px;
  background: rgba(204,27,32,.25);
  border-radius: var(--r);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-light);
  margin-bottom: 24px;
}

.mvv-card h3 {
  color: var(--white);
  margin-bottom: 16px;
}

.mvv-card p {
  font-size: .93rem;
  color: rgba(255,255,255,.65);
  line-height: 1.75;
}

.mvv-values-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mvv-values-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: .9rem;
  color: rgba(255,255,255,.72);
  line-height: 1.5;
}

.mvv-values-list li::before {
  content: '';
  display: block;
  width: 7px;
  height: 7px;
  background: var(--primary-light);
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 7px;
}

/* ================================================================
   CONTATO
   ================================================================ */
.contact {
  padding: 100px 0;
  background: var(--bg-light);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.contact-info h3 {
  font-size: 1.5rem;
  margin-bottom: 32px;
}

.contact-items {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 40px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-item-icon {
  width: 48px;
  height: 48px;
  background: var(--white);
  border-radius: var(--r);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
  box-shadow: var(--shadow);
}

.contact-item-text h4 {
  font-size: .8rem;
  color: var(--gray);
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.contact-item-text p,
.contact-item-text a {
  font-size: .97rem;
  color: var(--dark-2);
  font-weight: 500;
  transition: color .25s;
}

.contact-item-text a:hover { color: var(--primary); }

.contact-cta-box {
  background: var(--white);
  border-radius: var(--r-lg);
  padding: 52px 44px;
  text-align: center;
  box-shadow: var(--shadow-md);
  border-top: 4px solid var(--primary);
}

.contact-cta-box h3 { margin-bottom: 16px; font-size: 1.5rem; }

.contact-cta-box p {
  color: var(--gray);
  margin-bottom: 36px;
  font-size: .97rem;
}

.btn-whatsapp-cta {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 18px 36px;
  background: #25D366;
  color: var(--white);
  border-radius: var(--r);
  font-family: var(--font-h);
  font-size: 1rem;
  font-weight: 700;
  transition: var(--trans);
  box-shadow: 0 4px 20px rgba(37,211,102,.35);
}

.btn-whatsapp-cta:hover {
  background: #1EBE59;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(37,211,102,.45);
}

.contact-extra {
  margin-top: 20px;
  font-size: .82rem;
  color: var(--gray-light);
}

/* ================================================================
   FOOTER
   ================================================================ */
footer {
  background: var(--dark);
  padding: 72px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 56px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.footer-brand img {
  height: 52px;
  width: auto;
  margin-bottom: 20px;
  /* Correção: aplicar fundo branco na logo para melhor legibilidade */
  background: white;
  padding: 6px 10px;
  border-radius: 6px;
}

.footer-brand p {
  font-size: .9rem;
  color: rgba(255,255,255,.5);
  line-height: 1.7;
  max-width: 300px;
  margin-bottom: 24px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 38px;
  height: 38px;
  background: rgba(255,255,255,.07);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,.6);
  transition: var(--trans);
  font-size: .85rem;
}

.footer-social a:hover {
  background: var(--primary);
  color: var(--white);
}

.footer-col h4 {
  color: var(--white);
  font-family: var(--font-h);
  font-size: .82rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--primary);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col ul li a,
.footer-col ul li span {
  font-size: .88rem;
  color: rgba(255,255,255,.5);
  transition: color .25s;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-col ul li a:hover { color: var(--primary-light); }

.footer-bottom {
  padding: 24px 0;
  text-align: center;
}

.footer-bottom p {
  font-size: .82rem;
  color: rgba(255,255,255,.3);
}

/* ================================================================
   WHATSAPP FLUTUANTE
   ================================================================ */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 58px;
  height: 58px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  box-shadow: 0 4px 20px rgba(37,211,102,.45);
  z-index: 998;
  transition: background .25s, transform .25s, box-shadow .25s;
}

.whatsapp-float:hover {
  background: #1EBE59;
  transform: scale(1.08);
  box-shadow: 0 6px 28px rgba(37,211,102,.55);
}

/* ================================================================
   RESPONSIVIDADE
   ================================================================ */

/* ── 1400px+ (widescreen) ───────────────────────────────────── */
@media (min-width: 1400px) {
  :root { --max-w: 1320px; }
}

/* ── 1200px+ ────────────────────────────────────────────────── */
@media (min-width: 1200px) and (max-width: 1399px) {
  .gallery-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ── Até 1023px (tablets + mobile) ─────────────────────────── */
@media (max-width: 1023px) {
  /* Desativa parallax */
  .hero-bg,
  .services,
  .differentials,
  .clients,
  .history { background-attachment: scroll; }

  .nav-desktop, .btn-header { display: none; }
  .menu-toggle { display: flex; }

  .gallery-grid { grid-template-columns: repeat(3, 1fr); }
  .clients-grid { grid-template-columns: repeat(3, 1fr); }

  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-badge { left: 16px; bottom: 16px; }
  .about-image-wrap img { height: 400px; }

  .services-grid { grid-template-columns: 1fr; }
  .service-card { padding: 36px 28px; }

  /* MVV mantém 2 colunas em tablets */
  .mvv-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }

  .diff-grid { grid-template-columns: repeat(2, 1fr); }

  .section-header { margin-bottom: 44px; }

  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .footer-brand { grid-column: 1 / -1; }
}

/* ── Até 768px (tablet pequeno) ─────────────────────────────── */
@media (max-width: 768px) {
  :root { --header-h: 70px; }

  .container { padding: 0 20px; }

  .hero-content h1 { font-size: clamp(1.75rem, 7vw, 2.5rem); }
  .hero-content { padding: 52px 0; }

  /* Stats 2×2 com separadores corretos */
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 0; }
  .stat-item + .stat-item::before { display: none; }
  .stat-item:nth-child(2)::before,
  .stat-item:nth-child(4)::before { display: block; }
  .stat-item:nth-child(3),
  .stat-item:nth-child(4) { border-top: 1px solid rgba(255,255,255,.2); }

  /* Timeline coluna única à esquerda */
  .timeline::before { left: 30px; }
  .timeline-item { grid-template-columns: 60px 1fr; grid-template-rows: auto; }
  .timeline-dot { grid-column: 1; grid-row: 1; }
  .timeline-content { grid-column: 2; grid-row: 1; }
  .timeline-empty { display: none; }
  .timeline-item:nth-child(even) .timeline-dot { grid-column: 1; }
  .timeline-item:nth-child(even) .timeline-content { grid-column: 2; order: 0; }
  .timeline-item:nth-child(even) .timeline-empty { display: none; }

  /* Imagem "Sobre" menos alta */
  .about-image-wrap img { height: 280px; }

  .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .contact-cta-box { padding: 40px 28px; }

  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .clients-grid { grid-template-columns: repeat(2, 1fr); }
  .diff-grid { grid-template-columns: 1fr; }

  /* MVV colapsa para 1 coluna */
  .mvv-grid { grid-template-columns: 1fr; gap: 16px; }

  .section-header { margin-bottom: 32px; }
  .section-header p { font-size: .97rem; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .about-highlights { grid-template-columns: 1fr; }

  /* Sem stagger em telas menores */
  .diff-card:nth-child(n),
  .stat-item:nth-child(n),
  .mvv-card:nth-child(n) { transition-delay: 0s; }
}

/* ── Até 480px (mobile pequeno) ─────────────────────────────── */
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  section { padding: 60px 0; }

  .hero-content { padding: 40px 0; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .btn { width: 100%; justify-content: center; }
  /* Desliga pulse no mobile (performance) */
  .hero-actions .btn-primary { animation: none; }

  .about-image-wrap img { height: 220px; }
  .about-badge { display: none; }

  .service-card { padding: 28px 20px; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); }

  .gallery-grid { grid-template-columns: repeat(2, 1fr); gap: 6px; }
  .clients-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }

  .contact-cta-box { padding: 32px 20px; }
  .contact-item-icon { width: 40px; height: 40px; }

  .section-header { margin-bottom: 24px; }

  .diff-grid { gap: 16px; }

  .lightbox-prev, .lightbox-next { display: none; }
}

/* ── 375px (mobile pequeno) ─────────────────────────────────── */
@media (max-width: 375px) {
  h1 { font-size: 1.65rem; }
  h2 { font-size: 1.3rem; }
  .hero-content { padding: 32px 0; }
  .gallery-grid { grid-template-columns: 1fr 1fr; gap: 4px; }
  .clients-grid { grid-template-columns: 1fr 1fr; }
  .about-image-wrap img { height: 180px; }
  .timeline-content { padding: 20px 16px; }
}

/* ================================================================
   BACKGROUNDS DAS SEÇÕES — IMAGENS EXTERNAS
   ================================================================ */

/* STATS — imagem de obra misturada com a cor vermelha */
.stats {
  background-image: url('https://images.unsplash.com/photo-1504307651254-35680f356dfd?auto=format&fit=crop&w=1920&q=80');
  background-size: cover;
  background-position: center;
  background-blend-mode: multiply;
}

/* SERVIÇOS — canteiro de obras com overlay claro */
.services {
  position: relative;
  background-color: transparent;
  background-image: url('https://images.unsplash.com/photo-1541888946425-d81bb19240f5?auto=format&fit=crop&w=1920&q=80');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}
.services::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(248, 249, 250, 0.91);
  z-index: 0;
}
.services > .container { position: relative; z-index: 1; }

/* DIFERENCIAIS — arquitetura moderna com overlay claro */
.differentials {
  position: relative;
  background-image: url('https://images.unsplash.com/photo-1487958449943-2429e8be8625?auto=format&fit=crop&w=1920&q=80');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}
.differentials::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.91);
  z-index: 0;
}
.differentials > .container { position: relative; z-index: 1; }

/* CLIENTES — ambiente corporativo com overlay claro */
.clients {
  position: relative;
  background-image: url('https://images.unsplash.com/photo-1497366216548-37526070297c?auto=format&fit=crop&w=1920&q=80');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}
.clients::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(248, 249, 250, 0.91);
  z-index: 0;
}
.clients > .container { position: relative; z-index: 1; }

/* HISTÓRIA — construção urbana com overlay claro */
.history {
  position: relative;
  background-image: url('https://images.unsplash.com/photo-1486325212027-8081e485255e?auto=format&fit=crop&w=1920&q=80');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}
.history::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.92);
  z-index: 0;
}
.history > .container { position: relative; z-index: 1; }

/* CONTATO — engenharia e infraestrutura com overlay claro */
.contact {
  position: relative;
  background-image: url('https://images.unsplash.com/photo-1464082354059-27db6ce50048?auto=format&fit=crop&w=1920&q=80');
  background-size: cover;
  background-position: center;
}
.contact::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(248, 249, 250, 0.92);
  z-index: 0;
}
.contact > .container { position: relative; z-index: 1; }

/* ================================================================
   PRELOADER
   ================================================================ */
#preloader {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: opacity .7s ease, visibility .7s ease;
}
#preloader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
.preloader-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}
.preloader-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 1;
}
.preloader-inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}
.preloader-logo {
  width: 200px;
  height: auto;
  filter: brightness(0) invert(1);
  animation: preloader-pulse 2s ease-in-out infinite;
}
@keyframes preloader-pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: .55; }
}
.preloader-bar {
  width: 200px;
  height: 3px;
  background: rgba(255,255,255,.2);
  border-radius: 2px;
  overflow: hidden;
}
.preloader-fill {
  height: 100%;
  background: var(--primary);
  border-radius: 2px;
  animation: preloader-load 5.8s ease-in-out forwards;
}
@keyframes preloader-load {
  0%   { width: 0%; }
  70%  { width: 85%; }
  100% { width: 100%; }
}

/* ================================================================
   HERO — INDICADOR DE SCROLL
   ================================================================ */
.hero-scroll {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.hero-scroll-mouse {
  width: 24px;
  height: 40px;
  border: 2px solid rgba(255,255,255,.5);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}
.hero-scroll-wheel {
  width: 3px;
  height: 7px;
  background: rgba(255,255,255,.8);
  border-radius: 2px;
  animation: scroll-wheel 1.8s ease-in-out infinite;
}
@keyframes scroll-wheel {
  0%   { transform: translateY(0); opacity: 1; }
  75%  { transform: translateY(12px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}
@media (max-width: 768px) { .hero-scroll { display: none; } }

/* ================================================================
   FAIXA DE CONFIANÇA
   ================================================================ */
.trust-strip {
  background: var(--white);
  border-top: 1px solid #eee;
  border-bottom: 1px solid #eee;
  padding: 28px 0;
}
.trust-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 1;
  min-width: 160px;
}
.trust-icon {
  width: 52px;
  height: 52px;
  background: rgba(204,27,32,.08);
  border-radius: var(--r);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
}
.trust-label strong {
  display: block;
  font-family: var(--font-h);
  font-size: .82rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 2px;
}
.trust-label span {
  font-size: .75rem;
  color: var(--gray);
}
.trust-sep {
  width: 1px;
  height: 48px;
  background: #e5e7eb;
  flex-shrink: 0;
}
@media (max-width: 1023px) {
  .trust-sep { display: none; }
  .trust-inner { gap: 16px; justify-content: flex-start; }
  .trust-item { min-width: 140px; flex: 0 0 auto; }
}
@media (max-width: 480px) {
  .trust-strip { padding: 20px 0; }
  .trust-item { min-width: 100%; }
}

/* ================================================================
   DEPOIMENTOS
   ================================================================ */
.testimonials {
  padding: 100px 0;
  background: var(--bg-light);
}
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.testimonial-card {
  background: var(--white);
  border-radius: var(--r-lg);
  padding: 36px 32px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 20px;
  border-top: 3px solid var(--primary);
  transition: transform .3s ease, box-shadow .3s ease;
}
.testimonial-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}
.testimonial-stars {
  color: #F59E0B;
  font-size: 1.1rem;
  letter-spacing: 2px;
}
.testimonial-card blockquote {
  font-size: .95rem;
  color: var(--gray);
  line-height: 1.75;
  font-style: italic;
  flex: 1;
  margin: 0;
  position: relative;
  padding-left: 16px;
}
.testimonial-card blockquote::before {
  content: '"';
  position: absolute;
  left: 0;
  top: -4px;
  font-size: 2.5rem;
  color: var(--primary);
  line-height: 1;
  font-family: Georgia, serif;
  opacity: .4;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-top: 16px;
  border-top: 1px solid #f0f0f0;
}
.testimonial-avatar {
  width: 44px;
  height: 44px;
  background: var(--primary);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-h);
  font-weight: 700;
  font-size: .82rem;
  flex-shrink: 0;
}
.testimonial-info strong {
  display: block;
  font-size: .9rem;
  font-family: var(--font-h);
  font-weight: 600;
  color: var(--dark);
}
.testimonial-info span {
  font-size: .78rem;
  color: var(--gray);
}
@media (max-width: 1023px) {
  .testimonials-grid { grid-template-columns: 1fr; gap: 20px; }
}
@media (max-width: 768px) {
  .testimonials { padding: 60px 0; }
  .testimonial-card { padding: 28px 24px; }
}

/* ================================================================
   BOTÃO VOLTAR AO TOPO
   ================================================================ */
#back-to-top {
  position: fixed;
  bottom: 100px;
  right: 28px;
  width: 44px;
  height: 44px;
  background: var(--white);
  color: var(--dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0,0,0,.15);
  z-index: 997;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity .3s ease, transform .3s ease, visibility .3s ease, background .2s ease;
  cursor: pointer;
  border: none;
}
#back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
#back-to-top:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-3px);
}

/* ================================================================
   AVISO LGPD
   ================================================================ */
#lgpd-notice {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--dark);
  z-index: 9000;
  transform: translateY(100%);
  transition: transform .4s cubic-bezier(.16,1,.3,1);
}
#lgpd-notice.visible {
  transform: translateY(0);
}
.lgpd-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.lgpd-inner p {
  flex: 1;
  font-size: .85rem;
  color: rgba(255,255,255,.8);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}
.lgpd-inner p strong { color: var(--white); }
#lgpd-accept {
  background: var(--primary);
  color: var(--white);
  border: none;
  padding: 9px 22px;
  border-radius: var(--r);
  font-family: var(--font-h);
  font-size: .82rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background .2s ease;
  flex-shrink: 0;
}
#lgpd-accept:hover { background: var(--primary-dark); }
@media (max-width: 480px) {
  .lgpd-inner { flex-direction: column; align-items: flex-start; gap: 12px; }
  #lgpd-accept { width: 100%; text-align: center; }
}

/* ================================================================
   EFEITOS ADICIONAIS
   ================================================================ */

/* Barra de progresso de scroll */
#scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), #ff6b6b);
  z-index: 10000;
  width: 0%;
  transition: width 0.08s linear;
  pointer-events: none;
  border-radius: 0 2px 2px 0;
}

/* Animações direcionais */
.fade-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity .7s ease, transform .7s ease;
}
.fade-right {
  opacity: 0;
  transform: translateX(50px);
  transition: opacity .7s ease, transform .7s ease;
}
.fade-left.visible,
.fade-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Badge flutuante */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-10px); }
}
.about-badge {
  animation: float 4s ease-in-out infinite;
}

/* Pulse no botão hero */
@keyframes pulse-ring {
  0%   { box-shadow: 0 0 0 0 rgba(204, 27, 32, 0.55); }
  70%  { box-shadow: 0 0 0 16px rgba(204, 27, 32, 0); }
  100% { box-shadow: 0 0 0 0 rgba(204, 27, 32, 0); }
}
.hero-actions .btn-primary {
  animation: pulse-ring 2.5s ease-out infinite;
}

/* Stagger para stat-items */
.stat-item:nth-child(1) { transition-delay: 0.00s; }
.stat-item:nth-child(2) { transition-delay: 0.12s; }
.stat-item:nth-child(3) { transition-delay: 0.24s; }
.stat-item:nth-child(4) { transition-delay: 0.36s; }

/* Stagger para diff-cards */
.diff-card:nth-child(1) { transition-delay: 0.05s; }
.diff-card:nth-child(2) { transition-delay: 0.15s; }
.diff-card:nth-child(3) { transition-delay: 0.25s; }
.diff-card:nth-child(4) { transition-delay: 0.35s; }
.diff-card:nth-child(5) { transition-delay: 0.45s; }
.diff-card:nth-child(6) { transition-delay: 0.55s; }
.diff-card:nth-child(7) { transition-delay: 0.65s; }

/* Stagger para mvv-cards */
.mvv-card:nth-child(1) { transition-delay: 0.00s; }
.mvv-card:nth-child(2) { transition-delay: 0.18s; }
.mvv-card:nth-child(3) { transition-delay: 0.36s; }

/* Border-top animada nos diff-cards ao hover */
.diff-card {
  border-top: 3px solid transparent;
}
.diff-card:hover {
  border-top-color: var(--primary);
  transform: translateY(-8px);
}

/* Hover aprimorado no timeline-content */
.timeline-content {
  transition: transform .35s ease, box-shadow .35s ease;
}
.timeline-content:hover {
  transform: translateY(-5px);
  box-shadow: 0 18px 45px rgba(0,0,0,.12);
}

/* Underline animada nos h2 de seção */
.section-header h2 {
  position: relative;
  display: inline-block;
}
.section-header h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  width: 56px;
  height: 3px;
  background: var(--primary);
  border-radius: 2px;
  transform: translateX(-50%) scaleX(0);
  transform-origin: center;
  transition: transform .6s ease .25s;
}
.section-header.visible h2::after {
  transform: translateX(-50%) scaleX(1);
}

/* ================================================================
   RESPONSIVIDADE MOBILE — APPLE / iOS
   ================================================================ */

/* ── Correções globais iOS ───────────────────────────────────── */

/* Corrige 100vh no Safari (barra de endereço não some do cálculo) */
.hero {
  min-height: 100svh; /* svh = small viewport height — iOS Safari safe */
}

/* Remove tap highlight azul no iOS */
a, button { -webkit-tap-highlight-color: transparent; }

/* Melhora performance de scroll no iOS */
html { -webkit-overflow-scrolling: touch; }

/* Previne zoom no foco de inputs no iOS */
input, select, textarea { font-size: 16px; }

/* ── Safe area (notch / Dynamic Island) ─────────────────────── */
#back-to-top {
  bottom: calc(100px + env(safe-area-inset-bottom));
  right: calc(28px + env(safe-area-inset-right));
}
.whatsapp-float {
  bottom: calc(28px + env(safe-area-inset-bottom));
  right: calc(28px + env(safe-area-inset-right));
}
#lgpd-notice {
  padding-bottom: env(safe-area-inset-bottom);
}
#scroll-progress {
  top: env(safe-area-inset-top);
}

/* ── Até 480px ───────────────────────────────────────────────── */
@media (max-width: 480px) {

  /* Hero */
  .hero-content p { font-size: .95rem; }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }
  .hero-actions .btn-primary { animation: none; } /* sem pulse no mobile */

  /* Preloader */
  .preloader-logo { width: 140px; }
  .preloader-bar  { width: 140px; }

  /* Seções */
  section { padding: 56px 0; }
  .section-header { margin-bottom: 24px; }
  .section-header p { font-size: .9rem; }

  /* Stats */
  .stat-item { padding: 20px 10px; }
  .stat-number { font-size: clamp(2rem, 8vw, 2.6rem); }

  /* Serviços */
  .service-card { padding: 24px 18px; }
  .service-icon  { width: 52px; height: 52px; }

  /* Diferenciais */
  .diff-card { padding: 24px 18px; }
  .diff-card-icon { width: 44px; height: 44px; }

  /* Clientes */
  .clients-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .client-card  { padding: 18px 12px; }
  .client-initial { width: 44px; height: 44px; font-size: .78rem; }
  .client-name  { font-size: .72rem; }
  .client-type  { font-size: .67rem; }

  /* Depoimentos */
  .testimonials { padding: 56px 0; }
  .testimonial-card { padding: 24px 18px; }
  .testimonial-card blockquote { font-size: .88rem; }

  /* Timeline */
  .timeline-content { padding: 20px 16px; }
  .timeline-dot-inner { width: 42px; height: 42px; font-size: .72rem; }

  /* MVV */
  .mvv-card { padding: 28px 20px; }
  .mvv-card-icon { width: 44px; height: 44px; }

  /* Contato */
  .contact-cta-box { padding: 28px 18px; }
  .contact-item-icon { width: 40px; height: 40px; }

  /* Footer */
  footer { padding: 48px 0 0; }
  .footer-grid { gap: 24px; }
  .footer-col h4 { margin-bottom: 14px; }
  .footer-brand img { height: 38px; }
  .footer-social a { width: 34px; height: 34px; }
  .footer-bottom { padding: 16px 0; }
  .footer-bottom p { font-size: .78rem; }

  /* Botões flutuantes — afasta do canto */
  .whatsapp-float { width: 52px; height: 52px; }
  #back-to-top    { right: 16px; }

  /* Faixa de confiança */
  .trust-strip { padding: 16px 0; }
  .trust-icon  { width: 42px; height: 42px; }
  .trust-label strong { font-size: .78rem; }
  .trust-label span   { font-size: .7rem; }
}

/* ── Até 390px (iPhone 12/13/14/15) ─────────────────────────── */
@media (max-width: 390px) {

  .container { padding: 0 14px; }

  h2 { font-size: 1.35rem; }
  .hero-content h1 { font-size: 1.6rem; }
  .hero-content h2 { font-size: 1rem; }
  .hero-content p  { font-size: .88rem; }

  .preloader-logo { width: 120px; }

  .stat-number { font-size: 2rem; }
  .stat-label  { font-size: .72rem; }

  .clients-grid { grid-template-columns: 1fr 1fr; gap: 8px; }

  .timeline::before { left: 24px; }
  .timeline-item { grid-template-columns: 52px 1fr; }
  .timeline-dot-inner { width: 36px; height: 36px; font-size: .65rem; }
  .timeline-content { padding: 16px 14px; }
  .timeline-content h3 { font-size: .95rem; }
  .timeline-content p  { font-size: .82rem; }

  .diff-card-icon, .mvv-card-icon { width: 38px; height: 38px; }

  .footer-bottom p { font-size: .72rem; }
  .footer-social a { width: 30px; height: 30px; }
}

/* ── Até 375px (iPhone SE / 8) ──────────────────────────────── */
@media (max-width: 375px) {

  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.25rem; }

  .hero-content { padding: 28px 0; }
  .section-header { margin-bottom: 18px; }

  .about-image-wrap img { height: 170px; }

  .service-card { padding: 20px 14px; }
  .diff-card    { padding: 20px 14px; gap: 10px; }
  .mvv-card     { padding: 24px 16px; }
  .testimonial-card { padding: 20px 14px; }

  .client-card    { padding: 14px 10px; }
  .client-initial { width: 38px; height: 38px; font-size: .72rem; }

  .contact-cta-box { padding: 24px 14px; }

  .whatsapp-float { width: 48px; height: 48px; }
  .whatsapp-float svg { width: 24px; height: 24px; }

  .gallery-grid { grid-template-columns: 1fr 1fr; gap: 4px; }
}

/* ── iPad / Tablet Apple (768px – 1024px) ───────────────────── */
@media (min-width: 768px) and (max-width: 1024px) {

  /* Corrige parallax — iOS não suporta background-attachment: fixed */
  .hero-bg,
  .services,
  .differentials,
  .clients,
  .history { background-attachment: scroll; }

  /* Grids em 2 colunas onde fazem sentido */
  .diff-grid  { grid-template-columns: repeat(2, 1fr); }
  .mvv-grid   { grid-template-columns: repeat(2, 1fr); }

  /* Testemunhos — 2 colunas no iPad */
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }

  /* Timeline */
  .timeline::before { left: 30px; }
  .timeline-item { grid-template-columns: 60px 1fr; }
  .timeline-dot  { grid-column: 1; }
  .timeline-content { grid-column: 2; }
  .timeline-empty { display: none; }
  .timeline-item:nth-child(even) .timeline-dot    { grid-column: 1; }
  .timeline-item:nth-child(even) .timeline-content { grid-column: 2; order: 0; }

  /* Footer 2 colunas no iPad */
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .footer-brand { grid-column: 1 / -1; }

  /* About grid — 1 coluna no iPad */
  .about-grid { grid-template-columns: 1fr; }
  .about-image-wrap img { height: 360px; }
}

/* ── iPad Pro 12.9" (1024px) ────────────────────────────────── */
@media (min-width: 1024px) and (max-width: 1180px) {
  /* parallax desativado */
  .hero-bg,
  .services,
  .differentials,
  .clients,
  .history { background-attachment: scroll; }

  .testimonials-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 2fr 1fr 1fr; }
}

/* ── Remove hover em touch (iOS não tem hover real) ─────────── */
@media (hover: none) {
  .service-card:hover,
  .diff-card:hover,
  .client-card:hover,
  .testimonial-card:hover,
  .timeline-content:hover,
  .mvv-card:hover,
  .btn:hover,
  #back-to-top:hover { transform: none; box-shadow: none; }

  .diff-card:hover { border-top-color: transparent; }
  .client-card:hover { border-bottom-color: transparent; }
  .hero-actions .btn-primary { animation: none; }
}