/* =============================================================
   MD INDÚSTRIA — estilos
   Paleta: aço/grafite escuros + âmbar (metal em brasa) como acento.
   Motivo visual recorrente: canto chanfrado (chapa cortada a 45°),
   usado em botões, molduras e cartões — a única "ousadia" da página.
   ============================================================= */

:root {
  --charcoal: #1a1d20;
  --graphite: #24282c;
  --graphite-2: #2d3237;
  --steel: #6b7480;
  --steel-line: #3a3f45;
  --aluminum: #edeae4;
  --aluminum-dim: #b9b6b0;
  --amber: #cd0000;
  --amber-dark: #a30000;

  --font-display: "Oswald", "Arial Narrow", sans-serif;
  --font-body: "Inter", -apple-system, "Segoe UI", sans-serif;

  --cut: 22px; /* tamanho do canto chanfrado */
  --nav-height: 116px;
}

/* ---------- Reset básico ---------- */
* { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--aluminum);
  color: var(--charcoal);
  font-family: var(--font-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
h1, h2, h3 { font-family: var(--font-display); margin: 0; line-height: 1.15; }
p { margin: 0 0 1em; color: var(--graphite-2); }
a { color: inherit; text-decoration: none; }
ul, dl { margin: 0; padding: 0; list-style: none; }

.section {
  scroll-margin-top: var(--nav-height);
  padding: 88px 24px;
}
.section-heading {
  font-size: clamp(1.6rem, 2.6vw, 2.1rem);
  font-weight: 600;
  max-width: 20ch;
  margin-bottom: 20px;
  color: var(--charcoal);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

/* ---------- Chanfro reutilizável ---------- */
.cut-tr {
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}
.cut-bl {
  clip-path: polygon(0 0, 100% 0, 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

/* =============================================================
   NAVEGAÇÃO — barra fixa ("congelada") no topo
   ============================================================= */
.nav-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background: rgba(26, 29, 32, 0.94);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--steel-line);
}
.nav-inner {
  max-width: 1180px;
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--aluminum);
}
.brand-logo { height: 80px; width: auto; }
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 62px;
  height: 62px;
  background: var(--amber);
  color: var(--charcoal);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  clip-path: polygon(0 0, 100% 0, 100% 65%, 65% 100%, 0 100%);
}
/* some o monograma assim que uma logo de verdade for encontrada */
.brand.has-logo .brand-mark { display: none; }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-link {
  position: relative;
  padding: 10px 16px;
  font-family: var(--font-display);
  font-size: 0.86rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--aluminum-dim);
  transition: color 0.15s ease;
}
.nav-link:hover { color: var(--aluminum); }
.nav-link::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 6px;
  height: 2px;
  background: var(--amber);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}
.nav-link.is-active { color: var(--aluminum); }
.nav-link.is-active::after { transform: scaleX(1); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--aluminum);
}

/* =============================================================
   HERO / PRINCIPAL
   ============================================================= */
.hero {
  position: relative;
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  align-items: center;
  padding: 0 24px;
  background: var(--charcoal);
  overflow: hidden;
}

/* Container do carrossel: os slides (.hero-slide) entram por baixo do
   overlay (.hero-overlay), que contém o degradê + padrão de linhas. */
.hero-media {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background: var(--charcoal);
}
.hero-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transform: translateX(-6%);
  transition: opacity 1.4s ease, transform 1.6s ease;
  z-index: 0;
}
.hero-slide.is-active {
  opacity: 1;
  transform: translateX(0);
  z-index: 1;
}
.hero-slide.is-leaving {
  opacity: 0;
  transform: translateX(6%);
  z-index: 1;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background-image:
    linear-gradient(120deg, rgba(20, 22, 24, 0.94) 20%, rgba(20, 22, 24, 0.55) 68%, rgba(20, 22, 24, 0.85)),
    repeating-linear-gradient(-45deg, rgba(237, 234, 228, 0.05) 0 1px, transparent 1px 64px);
  background-size: cover, 64px 64px;
  background-position: center;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 700px;
  padding: 100px 0 80px;
}
.hero-title {
  font-size: clamp(2.1rem, 4.4vw, 3.4rem);
  font-weight: 700;
  color: var(--aluminum);
  margin-bottom: 22px;
}
.hero-subtitle {
  color: var(--aluminum-dim);
  font-size: 1.08rem;
  max-width: 52ch;
  margin-bottom: 34px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: 15px 30px;
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  border: 1px solid transparent;
  cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.btn-primary {
  background: var(--amber);
  color: var(--charcoal);
}
.btn-primary:hover { background: var(--amber-dark); }
.btn-ghost {
  background: transparent;
  color: var(--aluminum);
  border-color: var(--steel);
  clip-path: none;
}
.btn-ghost:hover { border-color: var(--aluminum); }

/* =============================================================
   DIFERENCIAIS (parte do bloco Principal)
   ============================================================= */
.differentials {
  background: var(--aluminum);
  padding-top: 56px;
  padding-bottom: 96px;
}
.differentials .section-heading { max-width: none; }
.differentials-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--steel-line);
  border: 1px solid var(--steel-line);
  max-width: 1180px;
  margin: 0 auto;
}
.diff-card {
  background: var(--aluminum);
  padding: 30px 26px;
}
.diff-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--charcoal);
  margin-bottom: 10px;
}
.diff-card p {
  font-size: 0.93rem;
  color: var(--graphite-2);
  margin-bottom: 0;
}

/* =============================================================
   FORNECEDORES — faixa contínua de logos (direita para a esquerda)
   ============================================================= */
.suppliers {
  background: var(--graphite);
  padding: 48px 0 56px;
  text-align: center;
  overflow: hidden;
}
.suppliers-heading {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--aluminum-dim);
  margin: 0 0 30px;
}
.marquee {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
          mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}
.marquee-track {
  display: flex;
  align-items: center;
  gap: 72px;
  width: max-content;
  animation: marquee-scroll 32s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes marquee-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
.marquee-item {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  height: 46px;
  min-width: 110px;
}
.supplier-logo {
  max-height: 42px;
  max-width: 150px;
  width: auto;
  filter: grayscale(1) brightness(1.7);
  opacity: 0.82;
  transition: opacity 0.2s ease, filter 0.2s ease;
}
.marquee-item:hover .supplier-logo {
  opacity: 1;
  filter: grayscale(0) brightness(1);
}
.supplier-fallback {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.03em;
  color: var(--aluminum-dim);
  border: 1px solid var(--steel-line);
  padding: 9px 24px;
  white-space: nowrap;
}

/* =============================================================
   SOBRE NÓS
   ============================================================= */
.about {
  background: var(--charcoal);
}
.about-grid {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
}
.about-text .section-heading { color: var(--aluminum); }
.about-text p { color: var(--aluminum-dim); }

.stats-row {
  display: flex;
  gap: 36px;
  margin-top: 32px;
  padding-top: 28px;
  border-top: 1px solid var(--steel-line);
}
.stat dt {
  font-family: var(--font-display);
  font-size: 1.9rem;
  font-weight: 600;
  color: var(--amber);
}
.stat dd {
  margin: 4px 0 0;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--aluminum-dim);
}

.about-media { position: relative; }
.frame-border {
  background: var(--amber);
  padding: 3px;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 40px 100%, 0 calc(100% - 40px));
}
.frame-inner {
  aspect-ratio: 4 / 5;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 40px 100%, 0 calc(100% - 40px));
  background-color: var(--graphite);
  /* a foto (assets/sobre-img.*) é adicionada por cima via JS quando encontrada */
}
.media-caption {
  display: block;
  margin-top: 12px;
  font-size: 0.78rem;
  color: var(--aluminum-dim);
}

.video-block {
  max-width: 1180px;
  margin: 72px auto 0;
  padding-top: 56px;
  border-top: 1px solid var(--steel-line);
  text-align: center;
}
.video-heading {
  font-size: clamp(1.3rem, 2vw, 1.7rem);
  font-weight: 600;
  color: var(--aluminum);
  margin-bottom: 28px;
}
.video-frame {
  max-width: 380px;
  margin: 0 auto;
  background: var(--amber);
  padding: 4px;
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
}
.video-embed {
  position: relative;
  width: 100%;
  padding-top: 177.78%; /* proporção 9:16 (vertical, YouTube Shorts) */
  background: var(--graphite);
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
}
.video-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* =============================================================
   CONTATO
   ============================================================= */
.contact {
  background: var(--aluminum);
}
.contact-grid {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}
.contact-grid .section-heading { margin-left: auto; margin-right: auto; }
.contact-info p { max-width: 42ch; margin-left: auto; margin-right: auto; }

.info-list { margin-top: 28px; text-align: left; }
.info-list li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 16px 0;
  border-bottom: 1px solid var(--steel-line);
}
.info-label {
  font-family: var(--font-display);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--steel);
}
.info-value {
  font-size: 1rem;
  color: var(--charcoal);
}

.contact-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

/* =============================================================
   RODAPÉ
   ============================================================= */
.footer {
  background: var(--charcoal);
  border-top: 1px solid var(--steel-line);
}
.footer-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 56px 24px 36px;
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 32px;
}
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand .brand-mark { display: inline-flex; }
.footer-name {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--aluminum);
  margin: 0;
}
.footer-tagline {
  font-size: 0.86rem;
  color: var(--aluminum-dim);
  margin: 2px 0 0;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: 0.92rem;
  color: var(--aluminum-dim);
}
.footer-links a:hover { color: var(--aluminum); }
.footer-contact p {
  font-size: 0.92rem;
  color: var(--aluminum-dim);
  margin: 0 0 8px;
}
.footer-bottom {
  border-top: 1px solid var(--steel-line);
  padding: 20px 24px;
  text-align: center;
}
.footer-bottom p {
  margin: 0;
  font-size: 0.82rem;
  color: var(--steel);
}

/* =============================================================
   RESPONSIVO
   ============================================================= */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .differentials-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav-toggle { display: flex; }
  .nav-menu {
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--charcoal);
    border-bottom: 1px solid var(--steel-line);
    flex-direction: column;
    align-items: stretch;
    padding: 8px 16px 16px;
    display: none;
  }
  .nav-menu.is-open { display: flex; }
  .nav-link { padding: 14px 8px; }
  .nav-link::after { display: none; }

  .section { padding: 64px 20px; }
  .differentials-grid { grid-template-columns: 1fr; }
  .hero-content { padding: 64px 0 56px; }
}