/* ============================================================
   CONSTRUFACH — EMPRESAS QUE CONFÍAN EN NOSOTROS
   ============================================================ */

.empresas-container {
  background: var(--white);
  padding: 5rem 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3rem;
}

.empresas-header {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  max-width: 720px;
}

.empresas-sub-title {
  font-family: 'Barlow', sans-serif;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--red);
}

.empresas-title {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  color: var(--navy);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

/* ── Marquee wrapper ───────────────────────────────────────── */
.empresas-marquee {
  width: 100%;
  max-width: 1100px;
  overflow: hidden;
}

.empresas-logos {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 4rem;
  width: 100%;
}

.empresa-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 90px;
  flex: 0 1 220px;
  transition: transform 0.35s var(--ease-out-expo), filter 0.35s ease, opacity 0.35s ease;
  filter: grayscale(100%);
  opacity: 0.7;
}

.empresa-logo:hover {
  filter: grayscale(0%);
  opacity: 1;
  transform: translateY(-3px);
}

/* En desktop ocultamos los clones (solo se usan en mobile para el scroll infinito) */
.empresa-logo-clone {
  display: none;
}

.empresa-logo img {
  max-height: 100%;
  max-width: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
}

/* Stagger */
.empresas-logos .animate-on-scroll:nth-child(2) { transition-delay: 0.1s; }
.empresas-logos .animate-on-scroll:nth-child(3) { transition-delay: 0.2s; }

/* ── Responsive: marquee infinito en mobile ────────────────── */
@media (max-width: 768px) {
  .empresas-container {
    padding: 3.5rem 0;
    gap: 2rem;
  }

  .empresas-header {
    padding: 0 1.5rem;
  }

  /* Bordes con fade para el efecto pro */
  .empresas-marquee {
    -webkit-mask-image: linear-gradient(
      to right,
      transparent 0,
      #000 8%,
      #000 92%,
      transparent 100%
    );
            mask-image: linear-gradient(
      to right,
      transparent 0,
      #000 8%,
      #000 92%,
      transparent 100%
    );
  }

  .empresas-logos {
    flex-wrap: nowrap;
    justify-content: flex-start;
    gap: 3rem;
    width: max-content;
    animation: empresas-scroll 18s linear infinite;
  }

  .empresa-logo,
  .empresa-logo-clone {
    display: flex;
    height: 70px;
    flex: 0 0 140px;
    /* Sin hover en mobile, se ven a color */
    filter: grayscale(0%);
    opacity: 1;
  }

  /* Pausa al tocar */
  .empresas-marquee:active .empresas-logos {
    animation-play-state: paused;
  }
}

@keyframes empresas-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* Respeta usuarios que prefieren menos movimiento */
@media (prefers-reduced-motion: reduce) {
  .empresas-logos {
    animation: none !important;
  }
}