:root {
  --bg: #050505;
  --bg-soft: #0d0d0d;
  --surface: #121212;
  --surface-2: #1a1a1a;
  --text: #f7efe5;
  --muted: #b8b0a6;
  --border: rgba(255,255,255,0.13);
  --accent: #ff7a00;
  --accent-strong: #ff9837;
  --accent-soft: rgba(255,122,0,0.14);
  --shadow: 0 20px 45px rgba(0,0,0,0.28);
  --radius: 1.1rem;
  --max-width: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, "Segoe UI", Roboto, Arial, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(255,122,0,0.16), transparent 24%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-soft) 100%);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(255,122,0,0.04) 50%, transparent 100%);
  pointer-events: none;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
section[id] { scroll-margin-top: 5.5rem; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: #111;
  padding: 0.8rem 1rem;
  z-index: 80;
}
.skip-link:focus { left: 1rem; top: 1rem; }
:focus-visible {
  outline: 2px solid rgba(255,122,0,0.7);
  outline-offset: 3px;
}

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  padding: 1rem 5vw;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background 0.25s ease, box-shadow 0.25s ease, padding 0.25s ease;
}
.site-header.scrolled {
  padding: 0.8rem 5vw;
  background: rgba(5,5,5,0.92);
  backdrop-filter: blur(16px);
  box-shadow: 0 10px 28px rgba(0,0,0,0.25);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.brand {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.brand span { font-size: 1.06rem; }
.brand small {
  color: var(--accent);
  font-size: 0.62rem;
  letter-spacing: 0.26em;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 1.15rem;
  font-size: 0.92rem;
  font-weight: 600;
}
.site-nav a { transition: color 0.25s ease; }
.site-nav a:hover, .site-nav a:focus-visible { color: var(--accent); }
.nav-cta {
  padding: 0.72rem 1rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #111;
  box-shadow: 0 12px 24px rgba(255,122,0,0.25);
}
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 0.25rem;
  background: transparent;
  border: 0;
  padding: 0.3rem;
  cursor: pointer;
  color: var(--text);
}
.menu-toggle:focus-visible {
  outline: 2px solid rgba(255,122,0,0.7);
  outline-offset: 3px;
}

.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  grid-template-columns: 1.15fr 0.8fr;
  align-items: center;
  gap: 2rem;
  padding: 7.8rem 5vw 4rem;
  background:
    linear-gradient(110deg, rgba(4,4,4,0.97), rgba(4,4,4,0.70)),
    url('assets/hero-industrial.webp') center/cover;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0,0,0,0.2), transparent 30%, transparent 68%, rgba(255,122,0,0.12));
  pointer-events: none;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, rgba(255,122,0,0.25), transparent 36%);
  pointer-events: none;
}
.hero-content, .hero-card { position: relative; z-index: 1; }
.hero-content { max-width: 720px; }
.eyebrow {
  margin: 0 0 1rem;
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}
.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2.6rem, 5vw, 4.9rem);
  line-height: 0.96;
  letter-spacing: -0.03em;
}
.lead {
  margin-bottom: 1.7rem;
  max-width: 640px;
  font-size: 1.05rem;
  color: var(--muted);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.4rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.95rem 1.2rem;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #111;
  box-shadow: 0 14px 28px rgba(255,122,0,0.25);
}
.btn-secondary {
  background: rgba(255,255,255,0.06);
  color: var(--text);
  border: 1px solid var(--border);
}
.hero-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1rem;
}
.hero-highlights span {
  padding: 0.55rem 0.8rem;
  border: 1px solid rgba(255,122,0,0.3);
  border-radius: 999px;
  background: rgba(255,122,0,0.08);
  color: #f9d5b4;
  font-size: 0.92rem;
  font-weight: 500;
}
}
.hero-card {
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(16,16,16,0.84);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}
.card-label { margin: 0 0 0.4rem; color: var(--accent); font-weight: 700; }
.hero-card h2 { margin: 0 0 1rem; font-size: 1.35rem; }
.hero-card ul { padding-left: 1.1rem; color: var(--muted); }
.hero-card li + li { margin-top: 0.45rem; }

.stats-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  padding: 1.3rem 5vw 0;
  margin-top: -1rem;
}
.stat-card,
.card-surface,
.service-card,
.project-card,
.process-card,
.client-card,
.featured-client,
.gallery-item,
.faq-item,
.contact-card,
.contact-form {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(145deg, var(--surface), var(--surface-2));
  box-shadow: var(--shadow);
}
.stat-card {
  padding: 1.2rem;
  text-align: center;
}
.stat-card strong {
  display: block;
  margin-bottom: 0.2rem;
  font-size: 1.8rem;
  color: var(--accent);
}
.stat-card span { color: var(--muted); font-size: 0.9rem; }
.stat-card p { margin: 0.45rem 0 0; font-size: 0.95rem; }

.section {
  padding: 5rem 5vw;
}
.section-heading {
  max-width: 760px;
  margin-bottom: 2rem;
}
.section-heading h2 {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  line-height: 1.15;
}
.section-grid { display: grid; gap: 1.4rem; }
.two-col { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.content-card,
.contact-card,
.contact-form,
.featured-client {
  padding: 1.45rem;
}
.content-card p, .contact-card p, .featured-client p, .client-card p, .faq-item p, .service-card p, .project-card p, .process-card p { color: var(--muted); }
.check-list { padding-left: 1rem; color: var(--muted); }
.check-list li + li { margin-top: 0.45rem; }
.services-grid,
.projects-grid,
.process-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}
.service-card,
.project-card,
.process-card,
.client-card {
  padding: 1.3rem;
  transition: transform 0.25s ease, border-color 0.25s ease;
}
.service-card:hover,
.project-card:hover,
.process-card:hover,
.client-card:hover,
.gallery-item:hover {
  transform: translateY(-3px);
  border-color: rgba(255,122,0,0.35);
}
.service-icon { margin-bottom: 0.8rem; font-size: 1.5rem; }
.service-card h3,
.project-card h3,
.process-card h3,
.client-card h3,
.featured-client h3 { margin: 0 0 0.6rem; }
.project-category {
  margin-bottom: 0.6rem;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.process-step {
  display: inline-block;
  margin-bottom: 0.55rem;
  color: var(--accent);
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.2em;
}
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}
.gallery-item { overflow: hidden; }
.gallery-item img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  transition: transform 0.35s ease;
}
.gallery-item:hover img { transform: scale(1.05); }
.gallery-item figcaption {
  padding: 0.95rem 1rem 1rem;
  font-weight: 600;
}

.clients-marcas-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1.2fr 0.8fr;
}
.brand-shell {
  padding: 1.45rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(145deg, var(--surface), var(--surface-2));
  box-shadow: var(--shadow);
}
.brands-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}
.brand-pill {
  padding: 0.8rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.05);
  font-weight: 700;
  letter-spacing: 0.06em;
}
.yale-highlight {
  padding: 1.45rem;
  border: 1px solid rgba(255,122,0,0.28);
  border-radius: var(--radius);
  background: linear-gradient(145deg, rgba(255,122,0,0.16), rgba(18,18,18,0.95));
  box-shadow: var(--shadow);
}
.yale-highlight .card-label { margin-bottom: 0.6rem; }
.yale-list {
  margin: 0.8rem 0 0;
  padding-left: 1rem;
  color: var(--muted);
}
.yale-list li + li { margin-top: 0.45rem; }

.client-list { display: grid; gap: 1rem; }
.client-industry { margin-bottom: 0.35rem !important; color: var(--accent); font-weight: 700; }

.faq-list { display: grid; gap: 0.8rem; }
.faq-item { padding: 1rem 1.2rem; }
.faq-item summary {
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item p { margin-top: 0.7rem; }

.contact-form { display: grid; gap: 0.8rem; }
.contact-form label { display: grid; gap: 0.35rem; font-weight: 600; }
.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.85rem 0.95rem;
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  background: rgba(255,255,255,0.04);
  color: var(--text);
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: 2px solid rgba(255,122,0,0.6);
  outline-offset: 2px;
  border-color: var(--accent);
  background: rgba(255,255,255,0.07);
}
.contact-form input:invalid:not(:placeholder-shown),
.contact-form textarea:invalid:not(:placeholder-shown) {
  border-color: #e74c3c;
}
.contact-form input:valid:not(:placeholder-shown),
.contact-form textarea:valid:not(:placeholder-shown) {
  border-color: rgba(255,122,0,0.5);
}

.site-footer {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.6fr;
  gap: 1rem;
  align-items: start;
  padding: 1.2rem 5vw 2rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  margin-top: 1rem;
}
.site-footer h3 { margin: 0 0 0.4rem; color: var(--text); font-size: 1rem; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--accent); }

.whatsapp-float {
  position: fixed;
  right: 1.15rem;
  bottom: 1.15rem;
  display: grid;
  place-items: center;
  width: 3.45rem;
  height: 3.45rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  box-shadow: 0 14px 30px rgba(255,122,0,0.3);
  z-index: 45;
  font-size: 1.3rem;
}
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.text-link { color: var(--accent); font-weight: 700; }

@media (max-width: 1024px) {
  .hero { grid-template-columns: 1fr; padding-top: 7.8rem; }
  .stats-strip,
  .services-grid,
  .projects-grid,
  .process-grid,
  .gallery-grid,
  .clients-marcas-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .two-col { grid-template-columns: 1fr; }
  .site-footer { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .site-header { padding: 1rem 1.1rem; }
  .menu-toggle { display: flex; }
  .site-nav {
    position: absolute;
    top: 100%;
    right: 1.1rem;
    left: 1.1rem;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: 1rem;
    background: rgba(8,8,8,0.96);
    box-shadow: var(--shadow);
  }
  .site-nav.open { display: flex; }
  .hero { padding: 7rem 1.1rem 3rem; }
  .stats-strip,
  .services-grid,
  .projects-grid,
  .process-grid,
  .gallery-grid,
  .clients-marcas-grid,
  .site-footer {
    grid-template-columns: 1fr;
  }
  .section { padding: 4rem 1.1rem; }
  .site-footer { padding: 1.2rem 1.1rem 2rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
  .reveal { opacity: 1; transform: none; }
}