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

:root {
  --black: #111111;
  --white: #ffffff;
  --gray-light: #e9eaec;
  --gray-mid: #aaaaaa;
  --gray-text: #888888;
  --radius: 18px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--white);
  color: var(--black);
  -webkit-font-smoothing: antialiased;
}

/* ── NAV ── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 48px;
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
}

.logo {
  text-decoration: none;
  width: 50px;
}

.logo img{
  width: 50px;
}

.nav-links {
  display: flex;
  gap: 36px;
  list-style: none;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--black);
  text-decoration: none;
  opacity: 0.7;
  transition: opacity 0.2s;
}
.nav-links a:hover { opacity: 1; }

/* ── HERO ── */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  animation: fadeUp 0.8s ease both;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

.icon-drywall {
  width: 52px;
  height: 52px;
  margin-bottom: 32px;
}

.hero h1 {
  font-family: 'Inter', sans-serif;
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--black);
  line-height: 1.1;
}

.hero p {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--gray-mid);
  margin-top: 12px;
  font-weight: 400;
  max-width: 560px;
}

.hero-btns {
  display: flex;
  gap: 12px;
  margin-top: 36px;
  flex-wrap: wrap;
  justify-content: center;
}

.btn-primary {
  background: var(--black);
  color: var(--white);
  border: none;
  border-radius: 999px;
  padding: 13px 26px;
  font-family: 'Inter', sans-serif;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.15s;
  text-decoration: none;
  display: inline-block;
}
.btn-primary:hover { opacity: 0.82; transform: translateY(-1px); }

.btn-outline {
  background: transparent;
  color: var(--black);
  border: 1.5px solid rgba(0,0,0,0.18);
  border-radius: 999px;
  padding: 13px 26px;
  font-family: 'Inter', sans-serif;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.15s;
  text-decoration: none;
  display: inline-block;
}
.btn-outline:hover { border-color: var(--black); transform: translateY(-1px); }

/* ── SERVICES ── */
.services {
  padding: 80px 48px 100px;
  max-width: 960px;
  margin: 0 auto;
}

.service-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 80px;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.service-item.visible { opacity: 1; transform: translateY(0); }
.service-item.reverse { direction: rtl; }
.service-item.reverse > * { direction: ltr; }

.service-text h2 {
  font-family: 'Inter', sans-serif;
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 12px;
}

.service-text p {
  font-size: 0.95rem;
  color: var(--gray-text);
  line-height: 1.65;
  max-width: 280px;
}

.service-img {
  background: var(--gray-light);
  border-radius: var(--radius);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 402px;
  overflow: hidden;
}

.service-img img{
  height: 402px;
}

/* placeholder shapes */
.shape-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  width: 60px;
}
.shape-grid span {
  display: block;
  background: #d0d0d0;
  border-radius: 4px;
}
.shape-grid span:nth-child(1) { height: 28px; }
.shape-grid span:nth-child(2) { height: 14px; }
.shape-grid span:nth-child(3) { height: 14px; }
.shape-grid span:nth-child(4) { height: 28px; }

.shape-circle {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: #d0d0d0;
}

.shape-triangle {
  width: 0; height: 0;
  border-left: 36px solid transparent;
  border-right: 36px solid transparent;
  border-bottom: 60px solid #d0d0d0;
}

/* ── DIVIDER ── */
.divider {
  border: none;
  border-top: 1px solid rgba(0,0,0,0.08);
  margin: 0 48px;
}

/* ── CTA ── */
.cta {
  text-align: center;
  padding: 100px 24px;
}

.cta h2 {
  font-family: 'Inter', sans-serif;
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 14px;
}

.cta p {
  font-size: 0.95rem;
  color: var(--gray-text);
  max-width: 340px;
  margin: 0 auto 28px;
  line-height: 1.6;
}

/* ── FOOTER ── */
footer {
  border-top: 1px solid rgba(0,0,0,0.08);
  padding: 56px 48px 40px;
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 56px;
  flex-wrap: wrap;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 10px;
  opacity: 0.75;
}

.footer-logo {
  width: 50px;
  opacity: 75%;
}

.footer-cnpj {
  font-size: 0.75rem;
  color: var(--gray-text);
  letter-spacing: 0.01em;
}

.footer-col h4 {
  font-family: 'Inter', sans-serif;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: 14px;
  color: var(--black);
}

.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 8px; }
.footer-col a {
  font-size: 0.85rem;
  color: var(--gray-text);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--black); }

/* ── WHATSAPP FLOAT ── */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 200;
  width: 56px;
  height: 56px;
  background: #25d366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 16px rgba(0,0,0,0.18);
  transition: transform 0.2s, box-shadow 0.2s;
}
.whatsapp-float svg {
  width: 28px;
  height: 28px;
}
.whatsapp-float:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.22);
}

/* ── RESPONSIVE ── */
@media (max-width: 680px) {
  nav { padding: 18px 24px; }
  .services { padding: 60px 24px 80px; }
  .service-item { grid-template-columns: 1fr; gap: 28px; }
  .service-item.reverse { direction: ltr; }
  .service-text p { max-width: 100%; }
  .divider { margin: 0 24px; }
  .footer-grid { justify-content: flex-start; gap: 36px; }
}