/* =============================================================
   CMAS INGENIEROS — responsive.css
   Mobile-first breakpoints: 540 / 720 / 960 / 1280 / 1600
   ============================================================= */

/* =============================================================
   DEFAULT — Mobile (<540px)
   ============================================================= */

/* Nav */
.nav-links { display: none; }
.nav-cta { display: none; }
.nav-hamburger { display: flex; }

/* Hero */
.hero-title { font-size: clamp(2rem, 10vw, 3.5rem); }
.hero-stats { gap: 1.2rem; }
.hero-stat-divider { height: 30px; }
.hero-stat-num { font-size: 1.8rem; }

/* Clients */
.clients-header .section-eyebrow { font-size: .68rem; }

/* Services */
.services-grid { grid-template-columns: 1fr; gap: 1rem; }
.service-img-wrap { height: 180px; }

/* Projects */
.projects-grid { grid-template-columns: 1fr; gap: 1.5rem; }
.project-item:nth-child(n) { aspect-ratio: 4/3; }
.project-overlay { opacity: 1; }

/* Promise */
.promise-title { font-size: clamp(2.2rem, 11vw, 4rem); }
.promise-pillars { grid-template-columns: 1fr; gap: 1rem; }

/* Contact */
.contact-inner { grid-template-columns: 1fr; gap: 2.5rem; }
.contact-card-value { font-size: .82rem; }
.contact-meta { gap: 1rem; }

/* Footer */
.footer-top { flex-direction: column; align-items: flex-start; gap: 1.5rem; }
.footer-bottom { flex-direction: column; gap: .5rem; }

/* WA Float */
.wa-float-label { display: none; }
.wa-float { padding: .85rem; border-radius: 50%; }

/* Section header on mobile */
.section-header { text-align: left; margin-inline: 0; }
.section-header .section-eyebrow,
.section-header .section-sub { text-align: left; margin-inline: 0; }

/* =============================================================
   540px — Large phone / small tablet
   ============================================================= */
@media (min-width: 540px) {
  .services-grid { grid-template-columns: 1fr 1fr; }
  .promise-pillars { grid-template-columns: 1fr 1fr; }
  .projects-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .hero-actions { flex-wrap: nowrap; }
  .wa-float { padding: .75rem 1.2rem .75rem .9rem; border-radius: 50px; }
  .wa-float-label { display: block; }
}

/* =============================================================
   720px — Tablet portrait
   ============================================================= */
@media (min-width: 720px) {
  .nav-links { display: flex; }
  .nav-hamburger { display: none; }
  .nav-mobile { display: none !important; }

  .hero-stats { gap: 2rem; }

  .section-header { text-align: center; margin-inline: auto; }
  .section-header .section-eyebrow,
  .section-header .section-sub { text-align: center; margin-inline: auto; }

  .contact-inner { grid-template-columns: 1fr 1fr; }
  .promise-pillars { grid-template-columns: repeat(3, 1fr); }
}

/* =============================================================
   960px — Tablet landscape / small laptop
   ============================================================= */
@media (min-width: 960px) {
  .nav-cta { display: inline-flex; }
  .services-grid { grid-template-columns: repeat(3, 1fr); }
  .projects-grid { grid-template-columns: repeat(3, 1fr); gap: 2.5rem; }
  .project-item:nth-child(n) { aspect-ratio: unset; } /* restaurar aspect-ratios individuales */

  .project-overlay { opacity: 0; }
  .project-item:hover .project-overlay { opacity: 1; }

  .service-img-wrap { height: 200px; }
}

/* =============================================================
   1280px — Laptop / desktop
   ============================================================= */
@media (min-width: 1280px) {
  .services-grid { grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
  .hero-title { font-size: clamp(4rem, 6.5vw, 7rem); }
  .contact-inner { gap: 6rem; }
  .service-img-wrap { height: 220px; }
}

/* =============================================================
   1600px — Large desktop
   ============================================================= */
@media (min-width: 1600px) {
  .services-grid { grid-template-columns: repeat(4, 1fr); }

  /* 8 servicios en 4 columnas = 2 filas — perfecto */
}

/* =============================================================
   CONTACTO + FORMULARIO — responsive
   ============================================================= */
/* Mobile: todo apila en 1 columna */
.cf-layout { grid-template-columns: 1fr; gap: 2.5rem; }
.cf-info { position: static; }
.form-row { grid-template-columns: 1fr; }
.form-footer { flex-direction: column; align-items: flex-start; }
.form-submit { width: 100%; }

@media (min-width: 600px) {
  .form-row { grid-template-columns: 1fr 1fr; }
  .form-footer { flex-direction: row; align-items: center; }
  .form-submit { width: auto; }
}

@media (min-width: 960px) {
  /* Activar layout de 2 columnas en tablet/desktop */
  .cf-layout { grid-template-columns: 340px 1fr; gap: 3.5rem; }
  .cf-info { position: sticky; }
}

@media (min-width: 1280px) {
  .cf-layout { grid-template-columns: 380px 1fr; gap: 5rem; }
}

/* =============================================================
   HERO — ajustes por ALTURA de viewport
   Evita que el contenido del hero crezca más que la pantalla
   en laptops de baja altura.
   ============================================================= */
@media (max-height: 880px) {
  .hero-content { padding-block: 1rem; }
  .hero-badge { margin-bottom: 1.25rem; }
  .hero-sub { margin-bottom: 1.5rem; }
  .hero-actions { margin-bottom: 1.75rem; }
}

/* =============================================================
   PRINT
   ============================================================= */
@media print {
  .nav, .wa-float, .cursor, .marquee { display: none; }
  .hero { min-height: auto; padding-block: 2rem; }
  body { background: #fff; color: #000; }
}