:root {
  --steel-900: #14161a;
  --steel-800: #1e2126;
  --steel-700: #2b2f36;
  --steel-500: #565c66;
  --steel-300: #9aa1ab;
  --chrome-100: #eef0f2;
  --chrome-200: #d8dce0;
  --copper: #c1682f;
  --copper-light: #e08a4f;
  --paper: #f6f4f0;

  --font-display: 'Oswald', sans-serif;
  --font-body: 'Inter', sans-serif;

  --space-section: clamp(3rem, 2.4rem + 4vw, 8rem);
  --duration-normal: 300ms;
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--steel-900);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
h1, h2, h3 { font-family: var(--font-display); margin: 0; letter-spacing: 0.01em; }
p { margin: 0; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; margin: 0; padding: 0; }
img { max-width: 100%; display: block; }

.icon-sm { width: 18px; height: 18px; }
.icon-md { width: 22px; height: 22px; }

/* ===== ANNOUNCE BAR ===== */
.announce-bar {
  background: var(--steel-900);
  color: var(--chrome-200);
  text-align: center;
  font-size: 0.72rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 0.55rem 1rem;
}

/* ===== HEADER ===== */
.site-header {
  background: var(--paper);
  border-bottom: 1px solid rgba(0,0,0,0.08);
  position: sticky;
  top: 0;
  z-index: 50;
}
.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--steel-900);
  flex-shrink: 0;
}
.logo-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: 0.06em;
  line-height: 1;
}
.logo-text.light { color: var(--chrome-100); }
.logo-sub { display: block; font-size: 0.6rem; font-weight: 400; letter-spacing: 0.3em; color: var(--copper); margin-top: 2px; }

.main-nav {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  margin-left: 1rem;
  font-size: 0.88rem;
  font-weight: 500;
}
.main-nav a { position: relative; padding: 0.3rem 0; white-space: nowrap; }
.main-nav a::after {
  content: '';
  position: absolute; left: 0; right: 100%; bottom: 0;
  height: 2px; background: var(--copper);
  transition: right var(--duration-normal) var(--ease-out-expo);
}
.main-nav a:hover::after { right: 0; }
.nav-whatsapp { display: none; }

.header-actions { display: flex; align-items: center; gap: 0.4rem; margin-left: auto; }
.icon-btn {
  display: flex; align-items: center; justify-content: center; gap: 0.4rem;
  background: none; border: none; cursor: pointer;
  color: var(--steel-900); padding: 0.55rem;
  border-radius: 8px;
  min-width: 44px; min-height: 44px;
  transition: background var(--duration-normal);
}
.icon-btn:hover { background: var(--chrome-100); }
.nav-toggle { display: none; }

/* ===== MOBILE NAV ===== */
@media (max-width: 1020px) {
  .main-nav {
    position: fixed;
    inset: 0 0 0 auto;
    top: var(--header-h, 0);
    width: min(78vw, 320px);
    height: 100%;
    background: var(--steel-900);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: 1.5rem 1.5rem 2rem;
    transform: translateX(100%);
    transition: transform var(--duration-normal) var(--ease-out-expo);
    z-index: 60;
    box-shadow: -20px 0 40px rgba(0,0,0,0.25);
  }
  .main-nav.open { transform: translateX(0); }
  .main-nav a {
    color: var(--chrome-100);
    font-size: 1.05rem;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }
  .main-nav a::after { display: none; }
  .nav-whatsapp {
    display: block;
    margin-top: 1.5rem;
    background: var(--copper);
    color: #fff !important;
    text-align: center;
    border-radius: 6px;
    padding: 0.9rem 1rem !important;
    border-bottom: none !important;
    font-weight: 600;
  }
  .nav-toggle { display: flex; }
}

.nav-scrim {
  position: fixed; inset: 0; background: rgba(20,22,26,0.55);
  opacity: 0; pointer-events: none; transition: opacity var(--duration-normal);
  z-index: 55;
}
.nav-scrim.open { opacity: 1; pointer-events: auto; }

/* ===== HERO ===== */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(160deg, var(--steel-900) 0%, var(--steel-800) 55%, var(--steel-700) 100%);
  color: var(--chrome-100);
  padding: clamp(2.5rem, 2rem + 4vw, 6rem) 1.25rem 0;
}
.hero-bg-plates {
  position: absolute; inset: 0;
  background-image:
    repeating-linear-gradient(115deg, rgba(255,255,255,0.035) 0 2px, transparent 2px 90px);
  mix-blend-mode: overlay;
  pointer-events: none;
}
.hero-content {
  max-width: 780px;
  margin: 0 auto;
  text-align: center;
  position: relative;
}
.hero-kicker {
  font-size: 0.76rem; letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--copper-light); font-weight: 600; margin-bottom: 1rem;
}
.hero h1 {
  font-size: clamp(1.9rem, 1.5rem + 3vw, 3.6rem);
  font-weight: 600; line-height: 1.12;
}
.hero h1 .hl { color: var(--copper-light); }
.hero-sub {
  margin-top: 1.2rem; font-size: clamp(0.95rem, 0.9rem + 0.3vw, 1.05rem); color: var(--chrome-200);
  line-height: 1.6; max-width: 620px; margin-left: auto; margin-right: auto;
}
.hero-ctas { margin-top: 1.8rem; display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.6rem;
  min-height: 48px;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  transition: transform var(--duration-normal) var(--ease-out-expo), box-shadow var(--duration-normal), background var(--duration-normal);
  border: 1.5px solid transparent;
  cursor: pointer;
  text-align: center;
}
.btn-primary { background: var(--copper); color: #fff; box-shadow: 0 8px 24px -8px rgba(193,104,47,0.6); }
.btn-primary:hover { background: var(--copper-light); transform: translateY(-2px); }
.btn-ghost { border-color: rgba(255,255,255,0.35); color: var(--chrome-100); }
.btn-ghost:hover { background: rgba(255,255,255,0.08); transform: translateY(-2px); }
.btn-dark { background: var(--steel-900); color: var(--chrome-100); }
.btn-dark:hover { background: var(--copper); transform: translateY(-2px); }
.btn-outline { border-color: var(--steel-900); color: var(--steel-900); }
.btn-outline:hover { background: var(--steel-900); color: #fff; }
.btn-ghost-dark { color: var(--steel-900); text-decoration: underline; text-underline-offset: 4px; }

/* HERO BANNER (fixo) */
.hero-banner {
  margin-top: 2.5rem;
  max-width: 1280px;
  margin-left: auto; margin-right: auto;
  border-radius: 14px 14px 0 0;
  overflow: hidden;
  box-shadow: 0 -20px 60px -20px rgba(0,0,0,0.5);
  background: linear-gradient(135deg, var(--steel-800), var(--steel-900));
  display: flex;
  align-items: stretch;
  min-height: clamp(260px, 18vw + 160px, 420px);
}
.hero-banner-content {
  flex: 1 1 45%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.1rem;
  padding: 2rem clamp(1.25rem, 1rem + 2vw, 3rem);
}
.hero-banner-text {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 0.95rem + 1vw, 1.7rem);
  color: #fff;
  line-height: 1.25;
}
.hero-banner-content .btn { align-self: flex-start; }
.hero-banner-media {
  flex: 1 1 55%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 1.5rem 0;
  min-width: 0;
}
.hero-banner-media img { width: 100%; height: 100%; max-height: 380px; object-fit: contain; }

/* ===== SECTION HEAD ===== */
.section-head { text-align: center; max-width: 640px; margin: 0 auto var(--space-section); padding: 0 1.25rem; }
.section-head.light { color: var(--chrome-100); }
.eyebrow { font-size: 0.76rem; letter-spacing: 0.26em; text-transform: uppercase; color: var(--copper); font-weight: 600; margin-bottom: 0.7rem; }
.section-head h2 { font-size: clamp(1.5rem, 1.25rem + 1.6vw, 2.4rem); font-weight: 600; }

/* ===== PRODUCTS ===== */
.products { padding: var(--space-section) 1.25rem; max-width: 1280px; margin: 0 auto; }
.product-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.5rem, 1rem + 3vw, 5rem);
  align-items: center;
  margin-bottom: clamp(3rem, 2.4rem + 3vw, 7rem);
}
.product-row.reverse .product-visual { order: 2; }
.product-row.reverse .product-info { order: 1; }

.product-row.featured { margin-bottom: clamp(3.5rem, 2.8rem + 3.5vw, 7.5rem); }
.product-visual { position: relative; }

/* ===== PRODUCT GALLERY (real photos) ===== */
.gallery-main {
  aspect-ratio: 3/4;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 30px 60px -25px rgba(20,22,26,0.45);
  background: var(--chrome-100);
}
.gallery-main img { width: 100%; height: 100%; object-fit: contain; }
.gallery-thumbs { display: flex; gap: 0.6rem; margin-top: 0.8rem; }
.thumb {
  width: 64px; height: 64px; border-radius: 10px; overflow: hidden;
  border: 2px solid transparent; padding: 0; cursor: pointer;
  background: var(--chrome-100); flex-shrink: 0;
  transition: border-color var(--duration-normal);
}
.thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.thumb.active, .thumb:hover { border-color: var(--copper); }

.stock-badge {
  display: inline-block; font-size: 0.74rem; font-weight: 600;
  color: var(--steel-700); background: var(--chrome-100);
  border-radius: 999px; padding: 0.3rem 0.8rem; margin: 0.4rem 0 0.6rem;
}
.spec-list {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.5rem 1rem;
  margin: 1.2rem 0 1rem;
}
.spec-list li {
  position: relative; padding-left: 1.3rem;
  font-size: 0.86rem; color: var(--steel-500); line-height: 1.4;
}
.spec-list li::before {
  content: '✓'; position: absolute; left: 0; top: 0;
  color: var(--copper); font-weight: 700;
}
.spec-note {
  font-size: 0.82rem; color: var(--steel-700); font-weight: 600;
  margin-bottom: 1.4rem;
}

.price-box {
  display: flex; align-items: baseline; gap: 0.7rem;
  margin: 1rem 0 1.2rem;
}
.price-value {
  font-family: var(--font-display); font-size: 1.8rem; font-weight: 600;
  color: var(--steel-900);
}
.price-installment { font-size: 0.85rem; color: var(--steel-500); }

.product-tag {
  display: inline-block; font-size: 0.76rem; font-weight: 700;
  letter-spacing: 0.13em; color: var(--copper); margin-bottom: 0.8rem;
  text-transform: uppercase;
}
.product-info h3 { font-size: clamp(1.2rem, 1.05rem + 0.8vw, 1.8rem); font-weight: 600; line-height: 1.28; }
.product-info p { margin-top: 1rem; color: var(--steel-500); line-height: 1.65; font-size: 0.98rem; }

/* ===== TESTIMONIALS ===== */
.testimonials { background: var(--steel-900); padding: var(--space-section) 1.25rem; }
.testimonial-grid {
  max-width: 1200px; margin: 0 auto;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem;
}
.testimonial-grid blockquote {
  margin: 0; background: var(--steel-800); border-radius: 14px;
  padding: 1.6rem 1.4rem; border-top: 3px solid var(--copper);
  transition: transform var(--duration-normal) var(--ease-out-expo);
}
.testimonial-grid blockquote:hover { transform: translateY(-6px); }
.testimonial-grid p { color: var(--chrome-200); font-size: 0.92rem; line-height: 1.6; font-style: italic; }
.testimonial-grid cite { display: block; margin-top: 1rem; color: var(--copper-light); font-weight: 600; font-style: normal; font-size: 0.84rem; }

/* ===== VALUES ===== */
.values {
  max-width: 1280px; margin: 0 auto; padding: var(--space-section) 1.25rem;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem;
}
.value-card { text-align: center; padding: 1.25rem; }
.value-icon { width: 40px; height: 40px; color: var(--copper); margin-bottom: 1rem; }
.value-card h3 { font-size: 1.02rem; font-weight: 600; margin-bottom: 0.6rem; }
.value-card p { color: var(--steel-500); font-size: 0.9rem; line-height: 1.55; }

/* ===== INSTALLATION ===== */
.installation {
  background: linear-gradient(120deg, var(--copper) 0%, #8f4d21 100%);
  color: #fff; padding: var(--space-section) 1.25rem;
}
.installation-inner { max-width: 720px; margin: 0 auto; text-align: center; }
.installation h2 { font-size: clamp(1.35rem, 1.15rem + 1.2vw, 2.1rem); font-weight: 600; }
.installation p { margin-top: 1rem; opacity: 0.92; }
.install-ctas { margin-top: 1.8rem; display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.installation .btn-primary { background: var(--steel-900); box-shadow: none; }
.installation .btn-primary:hover { background: var(--steel-800); }

/* ===== CLOSING ===== */
.closing { padding: var(--space-section) 1.25rem; max-width: 1280px; margin: 0 auto; }
.closing-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; margin-bottom: 3rem; }
.closing-item { padding: 1.4rem; border-left: 3px solid var(--copper); }
.closing-item h3 { font-size: 1.02rem; font-weight: 600; margin-bottom: 0.5rem; }
.closing-item p { color: var(--steel-500); font-size: 0.88rem; line-height: 1.55; }
.closing-cta { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ===== FOOTER ===== */
.site-footer { background: var(--steel-900); color: var(--chrome-200); padding: var(--space-section) 1.25rem 5.5rem; }
.footer-top {
  max-width: 1280px; margin: 0 auto;
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 2rem;
  padding-bottom: 2.5rem; border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand p { margin-top: 0.9rem; color: var(--steel-300); font-size: 0.88rem; line-height: 1.55; max-width: 280px; }
.social-icons { display: flex; gap: 0.8rem; margin-top: 1.2rem; }
.social-icons a {
  width: 44px; height: 44px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--steel-800); color: var(--chrome-100);
  transition: background var(--duration-normal), transform var(--duration-normal);
}
.social-icons a:hover { background: var(--copper); transform: translateY(-3px); }

.footer-col h4 { font-family: var(--font-display); font-size: 0.82rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--copper-light); margin-bottom: 1rem; }
.footer-col a, .footer-col p { display: block; font-size: 0.88rem; color: var(--steel-300); margin-bottom: 0.7rem; }
.footer-col a:hover { color: #fff; }
.secure-badge { display: flex; align-items: center; gap: 0.6rem; color: var(--chrome-200); font-size: 0.85rem; }
.secure-badge .icon-md { color: var(--copper-light); flex-shrink: 0; }

.footer-bottom { max-width: 1280px; margin: 0 auto; padding-top: 1.5rem; font-size: 0.78rem; color: var(--steel-500); }

/* ===== FLOATING WHATSAPP ===== */
.whatsapp-float {
  position: fixed;
  right: 1.1rem;
  bottom: 1.1rem;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25D366;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 30px -8px rgba(0,0,0,0.5);
  z-index: 70;
  transition: transform var(--duration-normal) var(--ease-out-expo);
}
.whatsapp-float:hover { transform: scale(1.08); }
.whatsapp-float .icon-md { width: 28px; height: 28px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .product-row, .product-row.reverse { grid-template-columns: 1fr; }
  .product-row.reverse .product-visual, .product-row.reverse .product-info { order: initial; }
  .testimonial-grid { grid-template-columns: repeat(2, 1fr); }
  .values { grid-template-columns: repeat(2, 1fr); }
  .closing-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .hero-banner { flex-direction: column-reverse; min-height: 0; }
  .hero-banner-media { padding: 1.5rem 1.5rem 0; }
  .hero-banner-media img { max-height: 260px; }
  .hero-banner-content { padding: 1.5rem; }
}
@media (max-width: 560px) {
  .testimonial-grid, .values, .closing-grid, .spec-list { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .header-inner { gap: 0.6rem; padding: 0.85rem 1rem; }
  .logo-text { font-size: 1rem; }
  .hero-ctas .btn, .install-ctas .btn, .closing-cta .btn { width: 100%; }
  .hero-ctas, .install-ctas, .closing-cta { flex-direction: column; align-items: stretch; }
  .announce-bar p { font-size: 0.64rem; letter-spacing: 0.01em; }
  .whatsapp-float { width: 50px; height: 50px; right: 0.9rem; bottom: 0.9rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto !important; }
}