*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-black);
  background: var(--color-white);
  line-height: 1.55;
}
img { max-width: 100%; display: block; }
a { color: var(--color-red-brown); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--color-navy);
  line-height: 1.15;
  margin: 0 0 var(--space-sm);
  font-weight: 800;
}
h1 { font-size: clamp(2rem, 5vw, 3.2rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.2rem); }
h3 { font-weight: 700; }
p { margin: 0 0 var(--space-sm); }

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

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-navy);
  color: var(--color-white);
  padding: var(--space-xs) var(--space-sm);
  z-index: 1000;
}
.skip-link:focus { left: 0; }

/* Header */
.site-header {
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}
.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding-top: var(--space-xs);
  padding-bottom: var(--space-xs);
}
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-right: auto;
}
.brand__name {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-red-brown);
  line-height: 1.1;
  text-transform: uppercase;
  font-size: 0.95rem;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: 0;
  cursor: pointer;
  padding: var(--space-xs);
}
.nav-toggle span { width: 24px; height: 2px; background: var(--color-navy); }

.site-nav > ul {
  display: flex;
  gap: var(--space-md);
  list-style: none;
  margin: 0;
  padding: 0;
}
.site-nav a {
  color: var(--color-navy);
  font-weight: 600;
  font-size: 0.95rem;
}
.nav-dropdown { position: relative; }
.nav-dropdown__menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--color-white);
  box-shadow: var(--shadow-md);
  list-style: none;
  margin: 0;
  padding: var(--space-xs) 0;
  min-width: 200px;
  border-radius: var(--radius);
}
.nav-dropdown:hover .nav-dropdown__menu,
.nav-dropdown.is-open .nav-dropdown__menu { display: block; }
.nav-dropdown__menu li a { display: block; padding: var(--space-xs) var(--space-sm); }

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.tel-link { color: var(--color-navy); font-weight: 700; white-space: nowrap; }

/* Buttons */
.btn {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  font-size: 0.9rem;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform 0.2s var(--ease-decisive), box-shadow 0.2s var(--ease-decisive);
}
.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(255, 255, 255, 0.18);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease-decisive);
}
.btn:hover::before { transform: scaleX(1); }
.btn:active { transform: scale(0.98); }
.btn--primary { background: var(--color-alert-red); color: var(--color-white); }
.btn--primary:hover { background: #b81d16; text-decoration: none; }
.btn--outline { background: transparent; border-color: var(--color-white); color: var(--color-white); }
.btn--outline:hover { background: var(--color-white); color: var(--color-navy); text-decoration: none; }

/* WhatsApp floating button */
.whatsapp-float {
  position: fixed;
  right: var(--space-sm);
  bottom: var(--space-sm);
  width: 56px;
  height: 56px;
  background: #25d366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  z-index: 200;
}
.whatsapp-float::after {
  content: '';
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 2px solid #25d366;
  opacity: 0;
  pointer-events: none;
}
@media (prefers-reduced-motion: no-preference) {
  .whatsapp-float.pulse::after {
    animation: whatsapp-pulse 2.4s var(--ease-decisive) infinite;
  }
}
@keyframes whatsapp-pulse {
  0% { transform: scale(1); opacity: 0.55; }
  100% { transform: scale(1.7); opacity: 0; }
}

/* Hero */
.hero { position: relative; color: var(--color-white); overflow: hidden; min-height: 78vh; display: flex; align-items: center; background: var(--color-black); }
.hero-video, .hero-poster { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: 0; }
.hero::after {
  content: '';
  position: absolute; inset: 0;
  /* Degradado asimétrico: oscuro donde vive el texto (izquierda), la foto respira a la derecha. */
  background: linear-gradient(100deg, rgba(10,14,20,0.94) 0%, rgba(15,22,34,0.82) 38%, rgba(35,66,107,0.45) 68%, rgba(35,66,107,0.18) 100%);
  z-index: 1;
}
/* Cuña diagonal en la esquina superior derecha: acento de acción, no interfiere con el texto (centrado verticalmente). */
.hero-accent {
  position: absolute;
  top: 0;
  right: 0;
  width: min(32vw, 380px);
  height: min(220px, 45%);
  background: linear-gradient(135deg, var(--color-alert-red), var(--color-orange));
  clip-path: polygon(28% 0, 100% 0, 100% 100%, 0 100%);
  z-index: 1;
  opacity: 0.92;
}
.ember-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  pointer-events: none;
}
.hero-content { position: relative; z-index: 3; padding: var(--space-xl) 0; }
.hero h1 { color: var(--color-white); font-weight: 700; letter-spacing: -0.01em; text-shadow: 0 2px 20px rgba(0,0,0,0.4); }
.hero p { text-shadow: 0 1px 12px rgba(0,0,0,0.4); }
.hero-cta { display: flex; gap: var(--space-sm); flex-wrap: wrap; margin-top: var(--space-md); }

@media (max-width: 700px) {
  .hero-accent { display: none; }
}

.page-hero {
  position: relative;
  color: var(--color-white);
  padding: var(--space-lg) 0;
  background-size: cover;
  background-position: center;
}
.page-hero::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(rgba(27,42,74,0.6), rgba(27,42,74,0.75));
  z-index: 0;
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 { color: var(--color-white); }

/* Sections */
section { padding: var(--space-lg) 0; }
.section--alt { background: var(--color-bg-light); }
.section--dark { background: var(--color-navy); color: var(--color-white); }
.section--dark h2 { color: var(--color-white); }

.trust-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-md);
  text-align: center;
}
.trust-strip__item strong {
  display: block;
  position: relative;
  font-family: var(--font-heading);
  font-size: 1.6rem;
  color: var(--color-orange);
  padding-bottom: 0.5rem;
  margin-bottom: 0.4rem;
}
.trust-strip__item strong::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 40px;
  height: 3px;
  background: var(--color-hazard-yellow);
}

/* Franja de peligro/seguridad industrial: acento delgado, nunca relleno grande. */
.hazard-stripe {
  height: 12px;
  background: repeating-linear-gradient(
    45deg,
    var(--color-black),
    var(--color-black) 14px,
    var(--color-hazard-yellow) 14px,
    var(--color-hazard-yellow) 28px
  );
}

/* Revelado al hacer scroll: motivado por dar sensación de acción/movimiento sin distraer del contenido. */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease-decisive), transform 0.6s var(--ease-decisive);
}
.reveal.is-visible { opacity: 1; transform: none; }
.reveal[data-reveal-delay="1"] { transition-delay: 80ms; }
.reveal[data-reveal-delay="2"] { transition-delay: 160ms; }
.reveal[data-reveal-delay="3"] { transition-delay: 240ms; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md);
}
.card {
  background: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform 0.3s var(--ease-decisive), box-shadow 0.3s var(--ease-decisive);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.card img { aspect-ratio: 4/3; object-fit: cover; }
.card__body { padding: var(--space-sm); flex: 1; display: flex; flex-direction: column; }
.card__body h3 { font-size: 1.15rem; }
.card__body .btn, .card__body a.link-more { margin-top: auto; }

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-xs);
}
.gallery-grid img { aspect-ratio: 4/3; object-fit: cover; border-radius: var(--radius); }

.value-list { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: var(--space-sm); }
.value-list li { background: var(--color-bg-light); padding: var(--space-sm); border-radius: var(--radius); font-weight: 600; color: var(--color-navy); }

.legal-box {
  background: var(--color-bg-light);
  border-left: 4px solid var(--color-orange);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius);
  margin: var(--space-sm) 0;
}

.cta-banner {
  position: relative;
  background: linear-gradient(135deg, var(--color-black) 0%, var(--color-navy) 100%);
  color: var(--color-white);
  text-align: center;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 8px;
  background: repeating-linear-gradient(
    45deg,
    var(--color-black),
    var(--color-black) 12px,
    var(--color-hazard-yellow) 12px,
    var(--color-hazard-yellow) 24px
  );
}
.cta-banner h2 { color: var(--color-white); }
.cta-banner .btn--primary { background: var(--color-alert-red); }

/* Footer */
.site-footer { background: var(--color-navy); color: var(--color-white); }
.site-footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-md);
  padding: var(--space-lg) var(--space-sm);
}
.site-footer h3 { color: var(--color-white); font-size: 1rem; }
.site-footer a { color: var(--color-white); }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer ul li { margin-bottom: var(--space-xs); }
.social-links { display: flex; gap: var(--space-sm); margin-top: var(--space-sm); }
.site-footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.15);
  text-align: center;
  padding: var(--space-sm);
  font-size: 0.85rem;
}

/* Forms */
.contact-form { display: grid; gap: var(--space-sm); max-width: 640px; }
.contact-form label { font-weight: 600; display: block; margin-bottom: 0.25rem; }
.contact-form input, .contact-form select, .contact-form textarea {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border: 1px solid #ccc;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 1rem;
}
.contact-form .honeypot-field { position: absolute; left: -9999px; }
.form-error-banner {
  background: #fdecea;
  color: #a12a1f;
  padding: var(--space-sm);
  border-radius: var(--radius);
  margin-bottom: var(--space-sm);
}
.contact-info-list { list-style: none; padding: 0; }
.contact-info-list li { margin-bottom: var(--space-xs); }

/* Utility pages */
.utility-page { text-align: center; padding: var(--space-xl) 0; }

@media (max-width: 900px) {
  .nav-toggle { display: flex; }
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-white);
    box-shadow: var(--shadow-md);
  }
  .site-nav.is-open { display: block; }
  .site-nav > ul { flex-direction: column; gap: 0; padding: var(--space-sm); }
  .nav-dropdown__menu { position: static; box-shadow: none; display: none; }
  .nav-dropdown.is-open .nav-dropdown__menu { display: block; }
  .site-header__actions .tel-link { display: none; }
  .site-footer__inner { grid-template-columns: 1fr; }
}