/* Estilos que no conviene expresar con clases de Tailwind. */

/* Animación de entrada al hacer scroll (solo si hay JS). */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s cubic-bezier(0.2, 0.7, 0.2, 1), transform 0.9s cubic-bezier(0.2, 0.7, 0.2, 1);
  transition-delay: var(--delay, 0ms);
}
.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .js [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* Cabecera: transparente sobre la portada; al desplazarse, fondo negro.
   El margen negativo la superpone a la primera sección (siempre oscura). */
.site-header {
  margin-bottom: -5.5rem;
  background: transparent;
  transition: background-color 0.35s ease, box-shadow 0.35s ease, backdrop-filter 0.35s ease;
}
.site-header .header-bar {
  height: 5.5rem;
}
.site-header .site-logo {
  height: 2.6rem;
  transform-origin: left center;
  transition: transform 0.35s ease;
}
/* Negro translúcido con desenfoque del contenido de atrás (efecto "vidrio"). */
.site-header.is-scrolled {
  background: rgba(20, 15, 16, 0.72);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06);
}
/* Con el menú móvil abierto, casi opaco para que las opciones se lean bien. */
.site-header.is-menu-open {
  background: rgba(20, 15, 16, 0.96);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
}
.site-header.is-scrolled .site-logo {
  transform: scale(0.82);
}
.site-header .menu-toggle {
  color: #fff;
}
@media (max-width: 639px) {
  .site-header {
    margin-bottom: -4.5rem;
  }
  .site-header .header-bar {
    height: 4.5rem;
  }
  .site-header .site-logo {
    height: 2rem;
  }
}

/* Menú principal (siempre sobre fondo oscuro) con subrayado rojo. */
.nav-link {
  position: relative;
  padding: 0.5rem 0;
  color: rgba(255, 255, 255, 0.78);
  transition: color 0.2s;
}
.nav-link:hover,
.nav-link.is-active {
  color: #fff;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: #a80000;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.nav-link:hover::after,
.nav-link.is-active::after {
  transform: scaleX(1);
}

/* Submenú "Quiénes somos": hover y foco de teclado en escritorio, toque en móvil. */
.nav-item {
  position: relative;
}
.nav-item .nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}
.nav-caret {
  display: inline-flex;
  transition: transform 0.2s ease;
}
.nav-item.is-open .nav-caret,
[data-submenu-toggle][aria-expanded="true"] .nav-caret {
  transform: rotate(180deg);
}
.nav-submenu {
  position: absolute;
  left: -1rem;
  top: 100%;
  min-width: 14rem;
  padding: 0.5rem 0;
  list-style: none;
  background: rgba(20, 15, 16, 0.96);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.35);
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0s linear 0.2s;
}
.nav-item:hover .nav-submenu,
.nav-item.is-open .nav-submenu,
.nav-item:focus-within .nav-submenu {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition-delay: 0s;
}
.nav-item.is-closed .nav-submenu {
  opacity: 0;
  visibility: hidden;
}
.nav-sublink {
  display: block;
  padding: 0.75rem 1rem;
  font-size: 15px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.78);
  transition: color 0.2s, background 0.2s;
}
.nav-sublink:hover,
.nav-sublink:focus-visible,
.nav-sublink.is-active {
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
}
.nav-sublink.is-active {
  box-shadow: inset 2px 0 0 #a80000;
}

/* Tarjetas de servicio: filete rojo superior al pasar el mouse. */
.service-card {
  position: relative;
  transition: box-shadow 0.4s ease;
}
.service-card::before {
  content: "";
  position: absolute;
  z-index: 1;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: #a80000;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.service-card:hover {
  box-shadow: 0 24px 48px -32px rgba(28, 21, 22, 0.45);
}
.service-card:hover::before {
  transform: scaleX(1);
}

/* Fondo provisorio para fotos aún no cargadas. */
.photo-placeholder--hero {
  background: linear-gradient(135deg, #2a2122 0%, #1c1516 55%, #2e0000 100%);
  color: #fff;
}
.photo-placeholder--dark {
  background: linear-gradient(160deg, #2a2122 0%, #140f10 100%);
  color: #fff;
}
.photo-placeholder--light {
  background: linear-gradient(160deg, #ece8e6 0%, #dcd6d3 100%);
  color: #4b4041;
}
.photo-placeholder--light svg {
  opacity: 0.1;
}

/* Carrusel cíclico de clientes: cinta que se desliza sola en loop infinito.
   El track está duplicado en el HTML, así -50% siempre cae en un logo idéntico. */
.marquee {
  -webkit-mask-image: linear-gradient(to right, transparent, black 8%, black 92%, transparent);
  mask-image: linear-gradient(to right, transparent, black 8%, black 92%, transparent);
}
.marquee-track {
  animation: marquee-scroll var(--marquee-duration, 30s) linear infinite;
}
.marquee:hover .marquee-track,
.marquee:focus-within .marquee-track {
  animation-play-state: paused;
}
@keyframes marquee-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* Preguntas frecuentes: ícono + / − */
.faq summary::-webkit-details-marker {
  display: none;
}
.faq-icon {
  position: relative;
  width: 16px;
  height: 16px;
}
.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
  background: currentColor;
  transition: transform 0.3s ease;
}
.faq-icon::after {
  transform: rotate(90deg);
}
.faq[open] .faq-icon::after {
  transform: rotate(0deg);
}

/* Carrusel de portada: zoom muy lento sobre la imagen visible. */
/* La foto espera a que el script la encuadre; así no se ve el salto de la posición inicial. */
.hero-slide img { transition: opacity 0.4s ease; }
.hero-slide:not(.is-placed) img { opacity: 0; }

@keyframes hero-zoom {
  from { transform: scale(1); }
  to   { transform: scale(1.09); }
}
.hero-slide.is-zooming {
  animation: hero-zoom var(--hero-zoom-time, 8s) linear forwards;
}