/* ==========================================================================
   DISEÑO RESPONSIVO Y BREAKPOINTS MÓVILES (OFICIAL A.I.P)
   ==========================================================================
   REGLA DE ORO: DESKTOP (>= 992px) SE MANTIENE 100% INTACTO SIN CAMBIOS.
   TODOS LOS AJUSTES RESPONSIVOS ESTÁN ESTRICTAMENTE ENCAPSULADOS EN MEDIA QUERIES.
   ========================================================================== */

/* Prevenir scroll horizontal global en cualquier resolución */
html, body {
  max-width: 100%;
  overflow-x: hidden !important;
}

/* Ocultar elementos exclusivamente móviles en versión de escritorio */
@media (min-width: 769px) {
  .process-mobile-cta-wrapper {
    display: none !important;
  }
}

/* ==========================================================================
   BREAKPOINT TABLETS Y PANTALLAS MEDIANAS (max-width: 991px)
   ========================================================================== */
@media (max-width: 991px) {
  
  /* --- HEADER & MENÚ MÓVIL --- */
  :root {
    --header-height: 72px;
  }

  .header {
    height: var(--header-height);
  }

  .header .container {
    padding: 0 1.25rem;
  }

  .logo-img {
    height: 48px;
    width: auto;
  }

  .mobile-toggle {
    display: flex !important;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(226, 184, 87, 0.3);
  }

  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background: rgba(6, 17, 36, 0.98);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: 1.5rem;
    padding: 3rem 1.5rem 2rem;
    transform: translateX(100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
    overflow-y: auto;
    border-top: 1px solid rgba(226, 184, 87, 0.2);
  }

  .nav-menu.active {
    transform: translateX(0);
  }

  .nav-link {
    font-size: 1.2rem;
    font-weight: 600;
    color: #F8FAFC;
    padding: 0.5rem 1rem;
    width: 100%;
    text-align: center;
  }

  .btn-nav-cta {
    display: none;
  }

  body.menu-open {
    overflow: hidden !important;
  }

  /* --- HERO SECTION --- */
  .hero {
    margin-top: var(--header-height);
    padding: 3.5rem 0 3rem;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .hero-title {
    font-size: 2.25rem;
    line-height: 1.25;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  /* --- QUIÉNES SOMOS & ABOUT --- */
  .about-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .pillars-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

  /* --- STEEL FRAME --- */
  .steel-frame-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .steel-frame-features-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

  /* --- SERVICIOS SHOWCASE EN MÓVIL --- */
  .dark-card-inner {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .dark-slide-card {
    grid-template-columns: 1fr !important;
    gap: 1.5rem !important;
    padding: 1.5rem !important;
    min-height: auto !important;
  }

  .dark-photo-wrapper {
    height: 220px !important;
  }

  .dark-card-title {
    font-size: 1.5rem;
  }

  /* FLECHAS DE NAVEGACIÓN DE SERVICIOS ALINEADAS EN MÓVIL */
  .services-dark-stage {
    position: relative !important;
  }

  .dark-arrow-btn.side-arrow.prev,
  .dark-arrow-btn.side-arrow.next {
    position: absolute !important;
    top: 125px !important;
    transform: translateY(-50%) !important;
    width: 38px !important;
    height: 38px !important;
    min-width: 38px !important;
    min-height: 38px !important;
    border-radius: 50% !important;
    background: rgba(6, 17, 36, 0.85) !important;
    border: 1px solid rgba(226, 184, 87, 0.5) !important;
    color: #E2B857 !important;
    opacity: 0.85 !important;
    z-index: 25 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    padding: 0 !important;
    margin: 0 !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4) !important;
  }

  .dark-arrow-btn.side-arrow.prev {
    left: 8px !important;
    right: auto !important;
  }

  .dark-arrow-btn.side-arrow.next {
    right: 8px !important;
    left: auto !important;
  }

  .dark-arrow-btn.side-arrow svg {
    width: 20px !important;
    height: 20px !important;
  }

  /* --- CONTACTO & FOOTER --- */
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

/* ==========================================================================
   BREAKPOINT CELULARES ESTÁNDAR Y GRANDES (max-width: 768px)
   ========================================================================== */
@media (max-width: 768px) {

  /* --- GLOBAL PADDING & SECCIONES --- */
  .section {
    padding: 3.5rem 0;
  }

  .container {
    padding: 0 1.25rem;
  }

  .container-wide {
    width: 100%;
    padding: 0 1rem;
  }

  /* --- RESPONSIVE DE BOTONES Y CTAS EN CELULAR --- */
  .btn,
  .btn-primary,
  .btn-accent,
  .btn-nav-cta,
  .dark-card-btn,
  .hero-actions .btn,
  .dark-card-footer .btn,
  button[type="submit"],
  .btn-submit {
    width: 100% !important;
    max-width: 100% !important;
    min-height: 48px !important;
    padding: 0.75rem 1rem !important;
    font-size: 0.875rem !important;
    font-weight: 700 !important;
    line-height: 1.35 !important;
    white-space: normal !important;
    word-break: break-word !important;
    text-align: center !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    box-sizing: border-box !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
  }

  /* --- TITULARES Y TEXTOS --- */
  .section-title {
    font-size: 1.75rem;
    line-height: 1.25;
  }

  .section-subtitle {
    font-size: 0.95rem;
  }

  /* --- HERO --- */
  .hero-title {
    font-size: 1.95rem;
  }

  .hero-actions {
    flex-direction: column;
    gap: 0.85rem;
    width: 100%;
  }

  .hero-stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

  /* --- ABOUT & PILARES --- */
  .pillars-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  /* --- STEEL FRAME --- */
  .steel-frame-features-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .steel-frame-compare-table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
  }

  /* --- SERVICIOS SHOWCASE --- */
  .services-dark-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .dark-card-bullets {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .dark-card-footer {
    flex-direction: column;
    gap: 1rem;
    align-items: stretch;
  }

  /* ==========================================================================
     METODOLOGÍA DE TRABAJO EN MÓVIL (CARRUSEL 1 PASO A LA VEZ + FLECHAS + WHATSAPP)
     ========================================================================== */
  .section-process-fullbleed {
    padding-bottom: 2rem !important;
  }

  .process-slider-stage {
    position: relative !important;
    width: 100% !important;
    overflow: hidden !important;
    padding-bottom: 3.25rem !important; /* Espacio para las flechas centradas abajo */
  }

  .process-slider-track {
    display: flex !important;
    flex-direction: row !important;
    width: 600% !important; /* 6 Pasos x 100% de pantalla cada uno */
    transform: translateX(0%);
    transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1) !important;
  }

  .process-full-slide {
    flex: 0 0 16.6666% !important; /* 1/6 del track = 100% de la pantalla del celular */
    width: 16.6666% !important;
    height: 440px !important;
    border-right: none !important;
    box-sizing: border-box !important;
    position: relative !important;
  }

  .full-slide-content {
    padding: 2rem 1.25rem !important;
  }

  .full-slide-title {
    font-size: 1.35rem !important;
    margin-bottom: 0.5rem !important;
  }

  .full-slide-desc {
    font-size: 0.875rem !important;
    margin-bottom: 1rem !important;
    max-width: 100% !important;
  }

  /* Ocultar botones "VER MÁS" individuales dentro de cada paso en celular */
  .process-full-slide .full-slide-btn {
    display: none !important;
  }

  /* Flechas de Navegación del Proceso en Celular (Centradas Abajo) */
  .process-nav-arrow.prev,
  .process-nav-arrow.next {
    display: flex !important;
    position: absolute !important;
    bottom: 0.15rem !important;
    top: auto !important;
    transform: none !important;
    width: 44px !important;
    height: 44px !important;
    border-radius: 50% !important;
    background: rgba(6, 17, 36, 0.92) !important;
    border: 1px solid rgba(226, 184, 87, 0.5) !important;
    color: #E2B857 !important;
    z-index: 20 !important;
    align-items: center !important;
    justify-content: center !important;
    transition: opacity 0.3s ease !important;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.5) !important;
  }

  .process-nav-arrow.prev {
    left: calc(50% - 54px) !important;
    right: auto !important;
  }

  .process-nav-arrow.next {
    left: calc(50% + 10px) !important;
    right: auto !important;
  }

  .process-dots-wrapper {
    display: none !important;
  }

  /* Botón Único de Cotización WhatsApp debajo del Carrusel de Proceso */
  .process-mobile-cta-wrapper {
    display: block !important;
    width: 100% !important;
    margin-top: 1rem !important;
    padding: 0 1.25rem !important;
    box-sizing: border-box !important;
    text-align: center !important;
  }

  .process-mobile-cta {
    width: 100% !important;
    max-width: 100% !important;
    min-height: 50px !important;
    font-size: 0.95rem !important;
    font-weight: 800 !important;
    background: linear-gradient(135deg, #FADB7F 0%, #E2B857 100%) !important;
    color: #091A36 !important;
    border-radius: 30px !important;
    border: 1px solid #FADB7F !important;
    box-shadow: 0 6px 20px rgba(226, 184, 87, 0.4) !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    text-decoration: none !important;
    letter-spacing: 0.06em !important;
  }

  /* --- PROYECTOS / PORTAFOLIO --- */
  .portfolio-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .portfolio-card-img {
    height: 220px;
  }

  .portfolio-tabs-nav {
    flex-direction: column;
    width: 100%;
  }

  .portfolio-tab-btn {
    width: 100%;
    text-align: center;
  }

  /* --- FORMULARIO Y ENTRADAS --- */
  .contact-form {
    padding: 1.5rem;
  }

  .form-group input,
  .form-group select,
  .form-group textarea {
    font-size: 16px !important;
    padding: 0.85rem 1rem;
  }

  /* --- FOOTER --- */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  /* --- BOTÓN FLOTANTE WHATSAPP --- */
  .whatsapp-float {
    bottom: 1.25rem;
    right: 1.25rem;
    width: 54px;
    height: 54px;
    font-size: 1.75rem;
    z-index: 998;
  }

  /* --- MODAL Y LIGHTBOX MÓVIL --- */
  .modal-container {
    width: 94%;
    max-height: 90vh;
    padding: 1.25rem;
    margin: 1rem auto;
  }

  .modal-close-btn {
    top: 0.75rem;
    right: 0.75rem;
    width: 38px;
    height: 38px;
    font-size: 1.35rem;
  }
}

/* ==========================================================================
   BREAKPOINT CELULARES PEQUEÑOS (max-width: 480px / 360px)
   ========================================================================== */
@media (max-width: 480px) {

  .container {
    padding: 0 1rem;
  }

  .hero-title {
    font-size: 1.75rem;
  }

  .hero-subtitle {
    font-size: 0.9rem;
  }

  .brand-logo .logo-img {
    height: 42px;
  }

  .hero-stats-grid {
    grid-template-columns: 1fr;
  }

  .process-full-slide {
    height: 410px !important;
  }
}