:root {
  --navy-950: #060d1a;
  --navy-900: #0c1a33;
  --navy-800: #132847;
  --navy-700: #1c3560;
  --navy-600: #264a82;
  --silver-100: #f0f4fa;
  --silver-200: #c8d4e8;
  --silver-300: #8fa8cc;
  --white: #ffffff;
  --whatsapp: #25d366;
  --whatsapp-dark: #1da851;
  --gold: #c9a962;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  --radius: 14px;
  --radius-lg: 22px;
  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-display: "Playfair Display", Georgia, serif;
  --header-h: 76px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--silver-100);
  background: var(--navy-950);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--silver-200);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 0.2s var(--ease);
}

a:hover {
  color: var(--white);
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--white);
  margin: 0 0 0.75rem;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
}

h2 {
  font-size: clamp(1.65rem, 3.5vw, 2.35rem);
}

h3 {
  font-size: 1.2rem;
  font-family: var(--font-sans);
  font-weight: 700;
}

p {
  margin: 0 0 1rem;
  color: var(--silver-200);
}

strong {
  color: var(--white);
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 9999;
  padding: 0.6rem 1rem;
  background: var(--white);
  color: var(--navy-900);
  border-radius: 8px;
  font-weight: 600;
}

.skip-link:focus {
  top: 1rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), background 0.2s;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn--lg {
  padding: 1rem 1.75rem;
  font-size: 1rem;
}

.btn--sm {
  padding: 0.6rem 1.1rem;
  font-size: 0.875rem;
}

.btn--whatsapp {
  background: linear-gradient(135deg, var(--whatsapp), var(--whatsapp-dark));
  color: var(--white) !important;
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.35);
  text-decoration: none;
}

.btn--whatsapp:hover {
  color: var(--white) !important;
  box-shadow: 0 12px 32px rgba(37, 211, 102, 0.45);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.06);
  color: var(--white) !important;
  border: 1px solid rgba(255, 255, 255, 0.18);
  text-decoration: none;
  backdrop-filter: blur(8px);
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--white) !important;
}

/* Header */
.header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--header-h);
  transition: background 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.header--scrolled {
  background: rgba(6, 13, 26, 0.92);
  backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06);
}

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

.brand img {
  height: 44px;
  width: auto;
  object-fit: contain;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 20px;
  margin-inline: auto;
  background: var(--white);
  border-radius: 2px;
  transition: transform 0.25s var(--ease), opacity 0.25s;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__list a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--silver-200);
}

.nav__list a:hover {
  color: var(--white);
}

.nav__divider {
  width: 1px;
  height: 18px;
  background: rgba(255, 255, 255, 0.15);
  align-self: center;
}

.nav__service {
  font-weight: 700;
  color: var(--gold) !important;
}

.nav__service:hover,
.nav__service.is-active {
  color: var(--white) !important;
}

.nav__service.is-active {
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* Mobile menu panel (styled in media query) */
.nav-backdrop {
  display: none;
}

.nav__panel,
.nav__group,
.nav__group-label,
.nav__footer {
  display: none;
}

.nav__link {
  text-decoration: none;
}

/* Hero */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 3rem) 0 4rem;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: url("../assets/hero-bg.jpeg") center / cover no-repeat;
  transform: scale(1.02);
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    115deg,
    rgba(6, 13, 26, 0.94) 0%,
    rgba(12, 26, 51, 0.82) 45%,
    rgba(12, 26, 51, 0.55) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 680px;
  animation: fadeUp 0.8s var(--ease) both;
}

.hero__eyebrow {
  display: inline-block;
  margin-bottom: 1rem;
  padding: 0.35rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--silver-100);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
}

.hero h1 span {
  color: var(--silver-300);
  font-style: italic;
}

.hero__lead {
  font-size: 1.1rem;
  margin-bottom: 1.75rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-bottom: 2rem;
}

.hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.hero__badges li {
  padding: 0.45rem 0.9rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--silver-100);
  background: rgba(201, 169, 98, 0.12);
  border: 1px solid rgba(201, 169, 98, 0.25);
  border-radius: 999px;
}

/* Stats */
.stats {
  position: relative;
  z-index: 2;
  margin-top: -2.5rem;
  padding-bottom: 1rem;
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.stat {
  padding: 1.5rem 1.25rem;
  text-align: center;
  background: linear-gradient(160deg, var(--navy-800), var(--navy-900));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.stat__value {
  display: block;
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 0.35rem;
}

.stat__label {
  font-size: 0.88rem;
  color: var(--silver-300);
}

.service-page--calhas {
  border-left: 4px solid #4a9eff;
}

.service-page--estruturas {
  border-left: 4px solid var(--gold);
}

.service-page--telhas {
  border-left: 4px solid #5fd68a;
}

/* Service pages */
.service-page {
  padding: 4.5rem 0;
  scroll-margin-top: calc(var(--header-h) + 1rem);
}

.service-page--alt {
  background: linear-gradient(180deg, transparent, rgba(19, 40, 71, 0.4), transparent);
}

.service-page__header {
  max-width: 720px;
  margin-bottom: 2.5rem;
}

.service-page__header h2 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  margin-bottom: 0.5rem;
}

.service-page__lead {
  font-size: 1.1rem;
  margin: 0;
  color: var(--silver-200);
}

.service-page__cards {
  margin-bottom: 1.5rem;
}

.service-page__cards .card h3 {
  font-size: 1rem;
}

.service-page__cards .card p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

.nav__list a.is-active,
.nav__list .nav__service.is-active {
  color: var(--gold);
}

/* Sections */
.section {
  padding: 5rem 0;
}

.section--alt {
  background: linear-gradient(180deg, transparent, rgba(19, 40, 71, 0.35), transparent);
}

.section__header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 3rem;
}

.section__header--left {
  text-align: left;
  margin-left: 0;
  margin-right: 0;
}

.section__eyebrow {
  display: inline-block;
  margin-bottom: 0.75rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
}

.section__desc {
  margin-bottom: 0;
}

/* Cards */
.cards {
  display: grid;
  gap: 1.25rem;
}

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

.card {
  padding: 1.75rem;
  background: linear-gradient(165deg, rgba(28, 53, 96, 0.5), rgba(12, 26, 51, 0.8));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  transition: transform 0.25s var(--ease), border-color 0.25s;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(201, 169, 98, 0.3);
}

.card__icon {
  width: 48px;
  height: 48px;
  margin-bottom: 1rem;
  display: grid;
  place-items: center;
  background: rgba(201, 169, 98, 0.15);
  border-radius: 12px;
  color: var(--gold);
}

.card__icon svg {
  width: 26px;
  height: 26px;
}

.card p:last-child {
  margin-bottom: 0;
}

.card--audience {
  border-left: 3px solid var(--gold);
}

/* Split layout */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.split--reverse .split__media {
  order: -1;
}

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

.split__media--rounded img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.feature-list {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
}

.feature-list li {
  position: relative;
  padding: 0.65rem 0 0.65rem 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--silver-200);
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.1rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
}

.product-list {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.product-list__item {
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.08);
  overflow: hidden;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.product-list__item:hover {
  transform: translateX(4px);
}

.product-list__item--calhas { border-left: 4px solid #4a9eff; }
.product-list__item--estruturas { border-left: 4px solid var(--gold); }
.product-list__item--telhas { border-left: 4px solid #5fd68a; }

.product-list__item a {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1rem 1.15rem;
  text-decoration: none;
  color: inherit;
}

.product-list__item a:hover {
  color: inherit;
  background: rgba(255, 255, 255, 0.04);
}

.product-list__item strong {
  font-size: 1.05rem;
  color: var(--white);
}

.product-list__item span {
  font-size: 0.9rem;
  color: var(--silver-300);
}

.trust-list {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.trust-list li {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  background: rgba(37, 211, 102, 0.1);
  border: 1px solid rgba(37, 211, 102, 0.2);
  border-radius: 999px;
  color: var(--silver-100);
}

/* Gallery */
.gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.85rem;
}

.gallery__item {
  position: relative;
  padding: 0;
  border: none;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 4 / 3;
  background: var(--navy-800);
}

.gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s var(--ease);
}

.gallery__item:hover img {
  transform: scale(1.06);
}

.gallery__item::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(transparent 50%, rgba(6, 13, 26, 0.5));
  opacity: 0;
  transition: opacity 0.3s;
}

.gallery__item:hover::after {
  opacity: 1;
}

/* CTA band */
.cta-band {
  padding: 3.5rem 0;
  background: linear-gradient(135deg, var(--navy-700), var(--navy-900));
  border-block: 1px solid rgba(255, 255, 255, 0.06);
}

.cta-band__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.cta-band h2 {
  margin-bottom: 0.35rem;
}

.cta-band p {
  margin: 0;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.contact-card {
  padding: 1.75rem;
  background: var(--navy-900);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
}

.contact-card h3 {
  margin-bottom: 0.5rem;
}

.contact-card__note {
  font-size: 0.9rem;
  color: var(--silver-300);
}

.contact-card a:not(.btn) {
  font-size: 1.1rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--white);
}

/* Footer */
.footer {
  padding: 2.5rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  background: var(--navy-950);
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand--footer img {
  height: 38px;
  opacity: 0.9;
}

.footer__copy,
.footer__locale {
  margin: 0;
  font-size: 0.88rem;
  color: var(--silver-300);
}

/* WhatsApp float */
.whatsapp-float {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 90;
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  background: var(--whatsapp);
  color: var(--white);
  border-radius: 50%;
  box-shadow: 0 8px 28px rgba(37, 211, 102, 0.45);
  text-decoration: none;
  transition: transform 0.2s var(--ease), box-shadow 0.2s;
  animation: pulse 2.5s ease-in-out infinite;
}

.whatsapp-float svg {
  width: 30px;
  height: 30px;
}

.whatsapp-float:hover {
  transform: scale(1.08);
  color: var(--white);
  box-shadow: 0 12px 36px rgba(37, 211, 102, 0.55);
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  padding: 2rem;
  background: rgba(6, 13, 26, 0.92);
  backdrop-filter: blur(6px);
}

.lightbox[hidden] {
  display: none !important;
}

.lightbox__img {
  max-height: 85vh;
  max-width: min(900px, 100%);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.lightbox__close,
.lightbox__nav {
  position: absolute;
  border: none;
  background: rgba(255, 255, 255, 0.1);
  color: var(--white);
  font-size: 2rem;
  line-height: 1;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  cursor: pointer;
  transition: background 0.2s;
}

.lightbox__close:hover,
.lightbox__nav:hover {
  background: rgba(255, 255, 255, 0.2);
}

.lightbox__close {
  top: 1.5rem;
  right: 1.5rem;
}

.lightbox__nav--prev {
  left: 1rem;
}

.lightbox__nav--next {
  right: 1rem;
}

/* Animations */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%,
  100% {
    box-shadow: 0 8px 28px rgba(37, 211, 102, 0.45);
  }
  50% {
    box-shadow: 0 8px 28px rgba(37, 211, 102, 0.45), 0 0 0 12px rgba(37, 211, 102, 0.12);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (min-width: 721px) {
  .header {
    display: flex;
    align-items: center;
    justify-content: center;
    height: var(--header-h);
    gap: 1.5rem;
    padding-inline: max(1rem, calc((100% - 1120px) / 2 + 1rem));
  }

  .header__bar.container {
    width: auto;
    max-width: none;
    margin: 0;
    padding: 0;
    flex: 0 0 auto;
  }

  .nav-backdrop {
    display: none !important;
  }

  .nav {
    display: flex !important;
    flex: 1;
    width: auto;
    max-width: none;
    margin: 0;
    padding: 0;
    border: none;
    background: transparent;
    max-height: none;
    overflow: visible;
    align-items: center;
    justify-content: flex-end;
    gap: 1.5rem;
  }

  .nav[hidden] {
    display: flex !important;
  }

  .nav__panel {
    display: flex;
    flex: 1;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    gap: 1rem 1.5rem;
    width: 100%;
  }

  .nav__group-label {
    display: none;
  }

  .nav__group {
    display: flex;
    flex-direction: row;
    align-items: center;
    width: auto;
    gap: 0;
  }

  .nav__group .nav__list {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 1.25rem;
    width: auto;
  }

  .nav__link {
    display: inline;
    width: auto;
    padding: 0;
    background: none;
    border: none;
    border-radius: 0;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--silver-200);
  }

  .nav__link:hover,
  .nav__link:focus-visible {
    color: var(--white);
    background: none;
    border-color: transparent;
  }

  .nav__link.nav__service {
    font-weight: 700;
    color: var(--gold) !important;
  }

  .nav__link.nav__service.is-active {
    background: none;
    text-decoration: underline;
    text-underline-offset: 4px;
  }

  .nav__footer {
    display: flex;
    flex-direction: row;
    width: auto;
    margin: 0;
    padding: 0;
    border: none;
  }

  .nav__cta {
    display: inline-flex !important;
    width: auto;
    margin: 0;
  }
}

@media (max-width: 900px) {
  .stats {
    margin-top: 0;
  }

  .hero__badges {
    margin-bottom: 0.5rem;
  }

  .cards--3,
  .contact-grid,
  .gallery,
  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .split {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .split--reverse .split__media {
    order: 0;
  }
}

@media (max-width: 720px) {
  .header {
    height: auto;
    min-height: var(--header-h);
  }

  .header__bar {
    width: 100%;
    padding-inline: 1rem;
  }

  .brand {
    flex: 1;
    min-width: 0;
  }

  .nav-toggle {
    display: flex;
    flex-shrink: 0;
  }

  .nav-backdrop {
    position: fixed;
    inset: 0;
    top: var(--header-h);
    z-index: 99;
    border: none;
    padding: 0;
    margin: 0;
    cursor: pointer;
    background: rgba(6, 13, 26, 0.72);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s var(--ease), visibility 0.3s;
  }

  .nav-backdrop.is-open {
    display: block;
    opacity: 1;
    visibility: visible;
  }

  .nav-backdrop[hidden] {
    display: none !important;
  }

  .nav {
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    padding: 0.85rem 1rem 1.25rem;
    gap: 0;
    background: linear-gradient(
      165deg,
      rgba(28, 53, 96, 0.55) 0%,
      rgba(12, 26, 51, 0.98) 38%,
      rgba(6, 13, 26, 1) 100%
    );
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
    max-height: min(78vh, 620px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .nav.is-open {
    display: flex !important;
    position: relative;
    z-index: 101;
  }

  .nav[hidden] {
    display: none !important;
  }

  .nav__panel,
  .nav__group,
  .nav__group-label,
  .nav__footer {
    display: flex;
    flex-direction: column;
  }

  .nav__panel {
    gap: 1.15rem;
    width: 100%;
    padding-top: 0.15rem;
  }

  .nav__group {
    gap: 0.55rem;
    width: 100%;
  }

  .nav__group-label {
    padding: 0 0.35rem;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--gold);
  }

  .nav__group--services .nav__group-label {
    color: var(--silver-100);
  }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
    width: 100%;
    margin: 0;
    padding: 0;
  }

  .nav__list > li {
    width: 100%;
  }

  .nav__link {
    display: flex;
    align-items: center;
    width: 100%;
    padding: 0.9rem 1rem;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--silver-100);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: var(--radius);
    transition: background 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
  }

  .nav__link:hover,
  .nav__link:focus-visible {
    color: var(--white);
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(201, 169, 98, 0.35);
  }

  .nav__link--calhas {
    border-left: 4px solid #4a9eff;
  }

  .nav__link--estruturas {
    border-left: 4px solid var(--gold);
  }

  .nav__link--telhas {
    border-left: 4px solid #5fd68a;
  }

  .nav__group--services .nav__link {
    background: linear-gradient(135deg, rgba(28, 53, 96, 0.65), rgba(12, 26, 51, 0.85));
  }

  .nav__link.nav__service.is-active {
    border-color: rgba(201, 169, 98, 0.5);
    background: rgba(201, 169, 98, 0.12);
    color: var(--white);
    text-decoration: none;
  }

  .nav__footer {
    padding: 0.35rem 0.35rem 0;
    margin-top: 0.25rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1rem;
  }

  .nav__cta {
    width: 100%;
    margin: 0;
  }

  body.menu-open {
    overflow: hidden;
  }

  body.menu-open .header {
    z-index: 1000;
  }

  .hero {
    min-height: auto;
    align-items: flex-start;
    padding: calc(var(--header-h) + 1.25rem) 0 1.5rem;
  }

  .hero__badges {
    margin-bottom: 0.25rem;
  }

  .stats {
    margin-top: 1.25rem;
    padding-top: 0;
    padding-bottom: 1.5rem;
  }

  .stats__grid {
    gap: 0.85rem;
  }

  .cards--3,
  .contact-grid,
  .gallery,
  .stats__grid {
    grid-template-columns: 1fr;
  }

  .hero__actions {
    flex-direction: column;
  }

  .hero__actions .btn {
    width: 100%;
  }

  .cta-band__inner {
    flex-direction: column;
    text-align: center;
  }

  .footer__inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  .reveal,
  .whatsapp-float {
    animation: none !important;
    transition: none !important;
  }
}