/* Lux Pisos de Granito — Landing Page
   Paleta oficial da marca (manual Lux) + tipografia Fira Sans (confirmada no briefing).
   Linguagem visual: editorial, material em primeiro plano, formas retas — não "produto digital". */

:root {
  --graphite-900: #3d4345;
  --graphite-700: #54595c;
  --graphite-500: #696e71;
  --terracotta-600: #db9861;
  --terracotta-400: #daaf87;
  --terracotta-200: #e2ac7f;

  /* Base neutra clara — não é cor oficial do manual, é o "papel" que sustenta a paleta
     nas seções claras (o manual só trouxe tons médios/escuros). */
  --paper: #f7f5f2;
  --paper-card: #ece7e0;
  --cream: #f7f5f2;

  --ink-on-light: var(--graphite-900);
  --ink-muted-on-light: var(--graphite-700);
  --ink-on-dark: var(--cream);
  --ink-muted-on-dark: #c7c3bc;

  /* Cantos quase retos — matéria bruta, não cards de app. */
  --radius-lg: 4px;
  --radius-md: 4px;
  --radius-sm: 3px;

  --line-on-light: rgba(61,67,69,0.16);
  --line-on-dark: rgba(247,245,242,0.18);

  --container: 1240px;
  --section-pad-y: 9rem;

  --font: "Fira Sans", "Segoe UI", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; width: 100%; }
body {
  margin: 0;
  width: 100%;
  font-family: var(--font);
  color: var(--ink-on-light);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
h1, h2, h3, p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.75rem;
}

/* ---------- Tipografia ---------- */
h1 {
  font-weight: 900;
  font-size: clamp(2.6rem, 5.6vw, 4.6rem);
  line-height: 1.08;
  letter-spacing: -0.025em;
}
h2 {
  font-weight: 900;
  font-size: clamp(2.1rem, 4.2vw, 3.4rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
}
h3 {
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}
.lead {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  font-weight: 400;
  line-height: 1.55;
}
em {
  font-style: italic;
  font-weight: 700;
  color: var(--terracotta-600);
}
.block--dark em { color: var(--terracotta-400); }

.kicker {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--terracotta-600);
  margin-bottom: 1.2rem;
}

/* ---------- Botões — retos, sem pílula ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  border-radius: 3px;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  border: 1.5px solid transparent;
  transition: transform 0.15s ease, background 0.2s ease, border-color 0.2s ease, opacity 0.2s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn--solid {
  background: var(--terracotta-600);
  color: #241c14;
}
.btn--solid:hover { background: var(--terracotta-400); }
.btn--outline {
  background: transparent;
  border-color: currentColor;
  color: inherit;
}
.block--light .btn--outline { color: var(--graphite-900); }
.block--dark .btn--outline { color: var(--cream); }
.btn--outline:hover { background: rgba(219, 152, 97, 0.14); border-color: var(--terracotta-600); }

/* ---------- Seções ---------- */
.block {
  padding: var(--section-pad-y) 0;
  position: relative;
}
.block--dark {
  background: var(--graphite-900);
  color: var(--ink-on-dark);
}
.block--light {
  background: var(--paper);
  color: var(--ink-on-light);
}
.block--flush { padding: 0; }

/* ---------- Logo ---------- */
.site-logo { display: inline-flex; align-items: center; }
.site-logo img { height: 40px; width: auto; display: block; }
.site-logo--footer { margin-bottom: 2.6rem; }

/* ---------- Cabeçalho fixo ---------- */
:root { --header-h: 76px; }
body { padding-top: var(--header-h); }
section[id] { scroll-margin-top: var(--header-h); }
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  max-width: 100vw;
  height: var(--header-h);
  z-index: 40;
  background: rgba(61,67,69,0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(247,245,242,0.1);
}
.site-header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.site-header__logo img { height: 32px; width: auto; display: block; }
.site-nav { display: flex; align-items: center; gap: 1.7rem; }
.site-nav a {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--cream);
  opacity: 0.85;
  white-space: nowrap;
}
.site-nav a:hover { opacity: 1; color: var(--terracotta-400); }
.site-nav a.site-nav__cta { opacity: 1; color: #241c14; padding: 0.6rem 1.3rem; font-size: 0.88rem; }
.site-nav a.site-nav__cta:hover { color: #241c14; }
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  padding: 0;
}
.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--cream);
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.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); }

/* ---------- Bloco 1: Hero ---------- */
.hero {
  min-height: 94vh;
  display: flex;
  align-items: center;
  padding: 6rem 0;
  overflow: hidden;
}
.hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}
.hero__media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(100deg, rgba(23,21,18,0.92) 10%, rgba(23,21,18,0.55) 55%, rgba(23,21,18,0.75) 100%);
}
.hero__content {
  position: relative;
  z-index: 2;
  max-width: 760px;
  color: var(--cream);
}
.hero__content .lead {
  margin: 1.6rem 0 2.4rem;
  color: var(--ink-muted-on-dark);
  max-width: 480px;
}

/* ---------- Bloco 2: faixa de confiança — foto real de material em close-up, fundo cheio ---------- */
.trust-strip {
  text-align: left;
  padding: 11rem 0;
  overflow: hidden;
}
.trust-strip__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.trust-strip__media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.trust-strip__scrim {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(100deg, rgba(23,21,18,0.88) 20%, rgba(23,21,18,0.4) 60%, rgba(23,21,18,0.7) 100%);
}
.trust-strip > .container { position: relative; z-index: 2; }
.trust-strip h2 { max-width: 720px; margin: 0 0 1.8rem; }

/* ---------- Blocos 3/4: composições texto + material, 40/60 assimétrico ---------- */
.zigzag {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 6fr);
  gap: 5rem;
  align-items: center;
}
.zigzag__media { min-height: 420px; }
.zigzag__text p { margin-top: 1.4rem; max-width: 40ch; }
.zigzag__text .btn { margin-top: 2.4rem; }
.zigzag__media-cta { display: inline-flex; margin-top: 1.8rem; }

.steps {
  display: flex;
  flex-direction: column;
}
.step {
  padding: 1.8rem 0;
  border-top: 1px solid var(--line-on-light);
}
.step:last-child { border-bottom: 1px solid var(--line-on-light); }
.step h3 { font-size: 1.35rem; margin-bottom: 0.5rem; }
.step p { color: var(--ink-muted-on-light); font-size: 1rem; max-width: 46ch; }

/* Bloco 4 — imagem sangrada (edge-to-edge), sem container/padding do lado da foto */
.bleed-split {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 4fr);
  align-items: stretch;
}
.bleed-split__media { position: relative; min-height: 340px; overflow: hidden; }
.bleed-split__media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.bleed-split__text {
  display: flex;
  align-items: center;
  padding: var(--section-pad-y) 0;
}
.bleed-split__text-inner { padding: 0 3.5rem; max-width: 460px; }
.bleed-split__text-inner p { margin-top: 1.4rem; max-width: 38ch; }
.bleed-split__text-inner .btn { margin-top: 2.4rem; }

/* ---------- Bloco 5: vitrine de pedras — imagens grandes, não thumbnails ---------- */
.showcase__kicker {
  text-align: left;
  margin-bottom: 3rem;
  font-size: 1.15rem;
  color: var(--ink-muted-on-dark);
  max-width: 640px;
}
.carousel { position: relative; }
.carousel__track {
  display: flex;
  gap: 1.5rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 0.5rem 0.2rem 1.5rem;
  scrollbar-width: none;
}
.carousel__track::-webkit-scrollbar { display: none; }
.stone-card {
  position: relative;
  flex: 0 0 min(80vw, 520px);
  aspect-ratio: 1.45 / 1;
  border-radius: var(--radius-sm);
  overflow: hidden;
  scroll-snap-align: start;
  background: var(--graphite-700);
}
.stone-card img { width: 100%; height: 100%; object-fit: cover; display: block; }
.stone-card__label {
  position: absolute;
  left: 0;
  bottom: 0;
  right: 0;
  background: linear-gradient(0deg, rgba(20,19,17,0.75) 0%, transparent 100%);
  color: var(--cream);
  padding: 2.2rem 1.4rem 1.2rem;
  font-weight: 700;
  font-size: 1.05rem;
  border-radius: 0;
}

.carousel__arrow {
  position: absolute;
  top: 45%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 3px;
  border: 1.5px solid rgba(247,245,242,0.5);
  background: rgba(61,67,69,0.55);
  color: var(--cream);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 3;
}
.carousel__arrow:hover { border-color: var(--terracotta-600); color: var(--terracotta-400); }
.carousel__arrow--prev { left: -8px; }
.carousel__arrow--next { right: -8px; }
.showcase__cta { text-align: left; margin-top: 3rem; }

/* ---------- Bloco 6: galeria assimétrica — 1 imagem grande + 2 empilhadas ---------- */
.gallery-intro { text-align: left; max-width: 640px; margin: 0 0 3.5rem; }
.gallery-intro p { margin-top: 1.2rem; color: var(--ink-muted-on-light); max-width: 50ch; }
.gallery {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 1rem;
}
.gallery__item { min-height: 620px; border-radius: var(--radius-sm); overflow: hidden; }
.gallery__col { display: flex; flex-direction: column; gap: 1rem; }
.gallery__col .gallery__item { min-height: 300px; flex: 1; }
.gallery__item img { width: 100%; height: 100%; object-fit: cover; display: block; }
.gallery__cta { text-align: left; margin-top: 3rem; }

/* ---------- Bloco 7: etapas numeradas — sem caixa, sem círculo ---------- */
.timeline {
  display: flex;
  border-top: 1px solid var(--line-on-dark);
  border-bottom: 1px solid var(--line-on-dark);
  margin: 4rem 0 1.5rem;
}
.timeline__step {
  flex: 1;
  padding: 3rem 2rem 3rem 0;
  border-left: 1px solid var(--line-on-dark);
  padding-left: 2rem;
}
.timeline__step:first-child { border-left: none; padding-left: 0; }
.timeline__num {
  display: block;
  font-size: 3.4rem;
  font-weight: 900;
  color: var(--terracotta-600);
  letter-spacing: -0.02em;
  margin-bottom: 1.2rem;
}
.timeline__step h3 { margin-bottom: 0.6rem; }
.timeline__step p { font-size: 0.95rem; color: var(--ink-muted-on-dark); max-width: 32ch; }
.timeline__note {
  text-align: center;
  font-size: 0.88rem;
  color: var(--ink-muted-on-dark);
  margin-top: 1.5rem;
}
.timeline__cta { text-align: center; margin-top: 3rem; }


/* ---------- Bloco 9: FAQ — lista com linha fina, sem caixa ---------- */
.faq { max-width: 800px; margin: 0 auto; }
.faq-list { display: flex; flex-direction: column; margin-top: 3rem; }
.faq-item {
  border: none;
  border-bottom: 1px solid var(--line-on-light);
  border-radius: 0;
  background: transparent;
  overflow: hidden;
}
.faq-item:first-child { border-top: 1px solid var(--line-on-light); }
.faq-item__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: transparent;
  border: none;
  padding: 1.5rem 0;
  text-align: left;
  font-weight: 700;
  font-size: 1.08rem;
  color: var(--graphite-900);
}
.faq-item__icon {
  flex: none;
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--terracotta-600);
  transition: transform 0.2s ease;
}
.faq-item.is-open .faq-item__icon { transform: rotate(45deg); }
.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
}
.faq-item__answer p {
  padding: 0 0 1.6rem;
  color: var(--ink-muted-on-light);
  line-height: 1.6;
  max-width: 60ch;
}
.faq-cta { text-align: center; margin-top: 3rem; }

/* ---------- Bloco 10: CTA final ---------- */
.final-cta {
  position: relative;
  text-align: center;
  overflow: hidden;
}
.final-cta__media { position: absolute; inset: 0; z-index: 0; }
.final-cta__media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.final-cta__scrim {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(23,21,18,0.82) 0%, rgba(23,21,18,0.72) 50%, rgba(23,21,18,0.85) 100%);
}
.final-cta__inner { position: relative; z-index: 2; max-width: 980px; margin: 0 auto; }
.final-cta h2 { margin-bottom: 2rem; }
.final-cta__actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}
.contact-form {
  max-width: 460px;
  margin: 2.2rem auto 0;
  text-align: left;
  background: rgba(20,19,17,0.4);
  border: 1px solid rgba(247,245,242,0.2);
  border-radius: var(--radius-md);
  padding: 1.6rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.contact-form[hidden] { display: none; }
.field { display: flex; flex-direction: column; gap: 0.4rem; }
.field label { font-size: 0.85rem; color: var(--ink-muted-on-dark); }
.field input, .field select {
  font-family: inherit;
  font-size: 0.95rem;
  padding: 0.7rem 0.9rem;
  border-radius: 3px;
  border: 1px solid rgba(247,245,242,0.3);
  background: rgba(247,245,242,0.08);
  color: var(--cream);
}
.field input::placeholder { color: rgba(247,245,242,0.45); }
.contact-form .btn { align-self: flex-start; margin-top: 0.3rem; }

/* ---------- Rodapé ---------- */
.site-footer {
  background: #262322;
  color: var(--ink-muted-on-dark);
  padding: 5rem 0 2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem 1.5rem;
}
.footer-col__label {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--terracotta-400);
  margin-bottom: 0.6rem;
}
.footer-col__value { color: var(--cream); font-size: 0.95rem; line-height: 1.5; }
.footer-bottom {
  margin-top: 3rem;
  padding-top: 1.6rem;
  border-top: 1px solid rgba(247,245,242,0.12);
  font-size: 0.8rem;
  text-align: center;
  color: rgba(247,245,242,0.45);
}

/* ---------- Botão flutuante de WhatsApp ----------
   Exceção deliberada à regra de cantos retos: é um afordance de chat universalmente
   reconhecido em formato circular/pílula — achatar isso prejudicaria o reconhecimento
   do botão, então mantém a forma redonda mesmo com o resto do site mais anguloso. */
.wa-float {
  position: fixed;
  right: 1.4rem;
  bottom: 1.4rem;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: #1fa855;
  color: #fff;
  padding: 0.85rem 1rem;
  border-radius: 999px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.28);
  font-weight: 700;
  font-size: 0.92rem;
  animation: wa-float-bob 2.6s ease-in-out infinite;
}
@keyframes wa-float-bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
@media (prefers-reduced-motion: reduce) {
  .wa-float { animation: none; }
}
.wa-float svg { width: 24px; height: 24px; flex: none; }
.wa-float__label { display: none; }


/* ---------- Reveal on scroll ---------- */
[data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
[data-reveal].in-view { opacity: 1; transform: translateY(0); }

/* ---------- Responsivo ---------- */
@media (min-width: 641px) {
  .wa-float__label { display: inline; }
}

@media (max-width: 1000px) {
  .bleed-split { grid-template-columns: 1fr; }
  .bleed-split__media { min-height: 220px; }
  .bleed-split__text { padding: 4rem 0; }
  .bleed-split__text-inner { padding: 0 1.75rem; max-width: 100%; }
}

@media (max-width: 900px) {
  :root { --section-pad-y: 5.5rem; --header-h: 64px; }
  .nav-toggle { display: flex; }
  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    width: 100%;
    max-width: 100vw;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #2c3132;
    padding: 0.5rem 1.2rem 1.2rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.2s ease, transform 0.2s ease;
  }
  .site-nav.is-open { opacity: 1; visibility: visible; transform: none; }
  .site-nav a { padding: 0.8rem 0; border-bottom: 1px solid rgba(247,245,242,0.08); }
  .site-nav a.site-nav__cta { border-bottom: none; margin-top: 0.8rem; text-align: center; }

  .trust-strip { padding: 6rem 0; }

  .zigzag { grid-template-columns: 1fr; gap: 2.5rem; }
  .zigzag__media { min-height: 300px; }

  .gallery { grid-template-columns: 1fr; }
  .gallery__item { min-height: 320px; }
  .gallery__col { flex-direction: row; }
  .gallery__col .gallery__item { min-height: 220px; }

  .timeline { flex-direction: column; border-top: none; border-bottom: none; margin-top: 2.5rem; }
  .timeline__step {
    border-left: none;
    padding-left: 0;
    padding: 1.8rem 0;
    border-top: 1px solid var(--line-on-dark);
  }
  .timeline__step:first-child { border-top: 1px solid var(--line-on-dark); }
  .timeline__num { font-size: 2.6rem; margin-bottom: 0.7rem; }

  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  :root { --section-pad-y: 4rem; --header-h: 54px; }
  .container { padding: 0 1.2rem; }
  .btn {
    white-space: normal;
    text-align: center;
    max-width: 100%;
    padding: 0.9rem 1.3rem;
  }
  .site-header__logo img { height: 24px; }
  .nav-toggle { width: 32px; height: 32px; gap: 4px; }
  .hero { min-height: 100vh; padding: 6rem 0 3rem; }
  .trust-strip { padding: 4.5rem 0; }
  .gallery__col { flex-direction: column; }
  .final-cta__actions { flex-direction: column; align-items: stretch; }
  .footer-grid { grid-template-columns: 1fr; }
  .wa-float { padding: 0.9rem; }
}