/* ==========================================================================
   CSS Custom Properties (Rule 1)
   ========================================================================== */
:root {
  /* Colors */
  --bg-main: #F5F3EE; /* Blanco Obra */
  --bg-panel: #FFFFFF;
  --text-main: #2A2A28; /* Obsidiana */
  --text-muted: #8C8C84; /* Concreto */
  --border-light: #E0E8F4; /* Azul Claro */
  
  --accent-primary: #325180; /* Azul Tresmar */
  --accent-green: #1A8C7A; /* Teal dinámico */
  --accent-orange: #A05A32; /* Corten */
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

  /* Fluid Typography with clamp() (Rule 2) */
  --font-h1: clamp(2.5rem, 5vw, 4.5rem);
  --font-h2: clamp(2rem, 4vw, 3.5rem);
  --font-h3: clamp(1.25rem, 2.5vw, 1.75rem);
  --font-p: clamp(1rem, 1.5vw, 1.125rem);
  --font-small: clamp(0.75rem, 1vw, 0.875rem);
  
  /* Spacing Scale - strictly multiples of 8px (Rule 6) */
  --space-8: 8px;
  --space-16: 16px;
  --space-24: 24px;
  --space-32: 32px;
  --space-40: 40px;
  --space-48: 48px;
  --space-64: 64px;
  --space-80: 80px;
  --space-96: 96px;
  --space-128: 128px;
  
  /* Transitions (Rule 8) */
  --transition-fast: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Layout */
  --max-width-container: 1200px;
}

/* ==========================================================================
   Global Resets & Base Styles
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: 'Source Serif 4', serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.55;
}

/* Custom Cursor (Rule 9) */
@media (min-width: 1024px) {
  html, a, button, select, input, textarea {
    cursor: none !important;
  }
}

body {
  overflow-x: hidden;
  position: relative; /* Para el canvas de fondo */
}

/* Fondo de Red Interactivo */
#network-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
  opacity: 0.6;
}

h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  letter-spacing: 1px;
  line-height: 1.2;
}

h2, h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  line-height: 1.2;
}

h1 { font-size: var(--font-h1); }
h2 { font-size: var(--font-h2); }
h3 { font-size: var(--font-h3); }

p {
  font-size: var(--font-p);
  font-weight: 400;
  line-height: 1.55;
  color: var(--text-muted);
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  /* Image Performance (Rule 5) */
  object-fit: cover;
}

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--max-width-container);
  margin: 0 auto;
  padding: 0 var(--space-24);
}

/* ==========================================================================
   Micro-interactions & Interactive Elements (Rule 8)
   ========================================================================== */
.btn-primary, .btn-submit, .filter-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  border: none;
  cursor: none; /* Let custom cursor handle it */
  transition: all var(--transition-base);
  border-radius: 4px;
}

.btn-primary {
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 3px;
  background-color: var(--accent-green);
  color: var(--text-main);
  padding: var(--space-16) var(--space-32);
  box-shadow: var(--shadow-md);
}

/* Ensure contrast for Green Button */
.btn-primary:hover, .btn-primary:focus {
  background-color: #00d636;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  outline: none;
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  z-index: 100;
  border-bottom: 1px solid var(--border-light);
  transition: padding var(--transition-base);
  padding: var(--space-8) 0; /* Reducido de 24 a 8 */
}

.site-header.scrolled {
  padding: 4px 0; /* Muy ajustado al scrollear */
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-link img {
  width: 110px; /* Reducido de 150px a 110px */
  height: auto;
  transition: transform var(--transition-base);
}
.site-header.scrolled .logo-link img {
  transform: scale(0.85);
  transform-origin: left center;
}

.main-nav {
  display: none;
}

@media (min-width: 1024px) {
  .main-nav {
    display: block;
  }
  .nav-list {
    display: flex;
    gap: var(--space-32);
  }
  .nav-link {
    font-family: 'Barlow Condensed', sans-serif;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--text-main);
    font-size: var(--font-small);
    position: relative;
    padding-bottom: var(--space-8);
  }
  .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background-color: var(--accent-primary);
    transition: width var(--transition-base);
  }
  .nav-link:hover::after, .nav-link:focus::after {
    width: 100%;
  }
  .header-container .btn-primary {
    display: block;
  }
  .mobile-menu-toggle {
    display: none;
  }
}

@media (max-width: 1023px) {
  .header-container .btn-primary {
    display: none;
  }
}

/* Mobile Menu */
.mobile-menu-toggle {
  background: transparent;
  border: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  z-index: 101;
}
.hamburger-line {
  width: 24px;
  height: 2px;
  background-color: var(--text-main);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.mobile-nav {
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  background-color: var(--bg-panel);
  border-bottom: 1px solid var(--border-light);
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
  transition: transform var(--transition-base), opacity var(--transition-base);
  box-shadow: var(--shadow-md);
}

.mobile-nav.is-open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav-list {
  padding: var(--space-24);
  display: flex;
  flex-direction: column;
  gap: var(--space-24);
}

.mobile-nav-link {
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--text-main);
  font-size: var(--font-p);
  display: block;
}

/* ==========================================================================
   Hero Section (Section 2)
   ========================================================================== */
.hero-section {
  position: relative;
  height: 300vh; /* Para permitir el scroll en el canvas */
}

.hero-video {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  z-index: 1;
  object-fit: cover;
  opacity: 1; /* Opacidad original del video solicitada */
}

.hero-content {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  color: #fff;
  padding-top: var(--space-80);
  pointer-events: none;
}

.hero-content h1 {
  color: #fff;
  margin-bottom: var(--space-24);
  max-width: 800px;
  text-shadow: 0 4px 12px rgba(0,0,0,0.5);
}

.hero-content .subtitle {
  font-style: italic;
  font-weight: 400;
  color: #e5e7eb;
  max-width: 600px;
  margin-bottom: var(--space-64);
  text-shadow: 0 2px 8px rgba(0,0,0,0.5);
}

.scroll-indicator {
  position: absolute;
  bottom: var(--space-48);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-16);
  opacity: 0.8;
}

.mouse-icon {
  width: 24px;
  height: 36px;
  border: 2px solid #fff;
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 4px;
}

.wheel {
  width: 4px;
  height: 8px;
  background-color: #fff;
  border-radius: 2px;
  animation: scrollWheel 2s infinite cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes scrollWheel {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(12px); opacity: 0; }
}

/* ==========================================================================
   Trust Hub (Section 3)
   ========================================================================== */
.trust-hub-section {
  padding: var(--space-96) 0 var(--space-64) 0;
  background-color: var(--bg-panel);
  border-bottom: 1px solid var(--border-light);
  overflow: hidden;
}

.trust-header {
  display: flex;
  flex-direction: column;
  gap: var(--space-32);
  margin-bottom: var(--space-48);
  align-items: center;
  text-align: center;
}

@media (min-width: 768px) {
  .trust-header {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.trust-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--bg-main);
  padding: var(--space-16) var(--space-32);
  border-radius: 8px;
  border: 1px solid var(--border-light);
}

.indicator-score {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: var(--font-h2);
  font-weight: 500;
  color: var(--accent-green);
  line-height: 1;
}

.indicator-text {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: var(--font-small);
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-top: var(--space-8);
}

/* Infinite Marquee */
.marquee-container {
  width: 100%;
  overflow: hidden;
  position: relative;
  background-color: var(--bg-main);
  padding: var(--space-32) 0;
}

.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee 30s linear infinite;
}

.marquee-item {
  font-size: var(--font-h3);
  font-weight: 500;
  color: var(--text-muted);
  padding: 0 var(--space-48);
  opacity: 0.5;
  text-transform: uppercase;
  letter-spacing: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.client-logo {
  height: 50px;
  width: auto;
  filter: grayscale(100%);
  opacity: 0.7;
  transition: filter var(--transition-base), opacity var(--transition-base), transform var(--transition-base);
}

.client-logo:hover {
  filter: grayscale(0%);
  opacity: 1;
  transform: scale(1.1);
}

@keyframes marquee {
  0% { transform: translate3d(0, 0, 0); }
  100% { transform: translate3d(-33.33%, 0, 0); }
}

/* ==========================================================================
   Portfolio (Section 4)
   ========================================================================== */
.portfolio-section {
  padding: var(--space-128) 0;
}

.portfolio-header {
  text-align: center;
  margin-bottom: var(--space-64);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.portfolio-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-16);
  margin-bottom: var(--space-48);
}

.filter-btn {
  background: transparent;
  color: var(--text-muted);
  padding: var(--space-8) var(--space-24);
  font-size: var(--font-small);
  border: 1px solid transparent;
}

.filter-btn:hover, .filter-btn:focus {
  color: var(--accent-primary);
}

.filter-btn.active {
  color: var(--accent-primary);
  border-color: var(--accent-primary);
}
/* Portfolio Infinite Marquee */
.portfolio-marquee-container {
  width: 100%;
  overflow: hidden;
  position: relative;
  background-color: var(--bg-panel);
  padding: var(--space-32) 0;
}

.portfolio-marquee-track {
  display: flex;
  width: max-content;
  /* Moving to the right */
  animation: marqueeRight 40s linear infinite;
  gap: var(--space-24);
}

.portfolio-marquee-item {
  width: 80vw;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

@media (min-width: 768px) {
  .portfolio-marquee-item {
    width: 45vw;
  }
}

@media (min-width: 1024px) {
  .portfolio-marquee-item {
    width: 30vw;
  }
}

.portfolio-marquee-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  /* El usuario pidió eliminar filtros de las imágenes */
}

@keyframes marqueeRight {
  0% { transform: translate3d(-50%, 0, 0); }
  100% { transform: translate3d(0, 0, 0); }
}

.portfolio-item {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  background: var(--bg-panel);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.portfolio-item.hidden {
  display: none;
}

.item-inner {
  position: relative;
  width: 100%;
  aspect-ratio: 3/2;
}

.item-inner img {
  width: 100%;
  height: 100%;
  transition: transform var(--transition-base), filter var(--transition-base);
  filter: grayscale(100%);
}

.portfolio-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.portfolio-item:hover img, .portfolio-item:focus-within img {
  transform: scale(1.05);
  filter: grayscale(0%);
}

/* ==========================================================================
   FactSheet Sections: Metrics, ADN, Services
   ========================================================================== */

/* 2.5 Metrics Banner */
.metrics-section {
  background-color: var(--text-main);
  color: var(--bg-main);
  padding: var(--space-64) 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-32);
  text-align: center;
}

@media (min-width: 768px) {
  .metrics-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.metric-number {
  display: block;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: clamp(3rem, 6vw, 5rem);
  font-weight: 600;
  color: var(--accent-primary);
  line-height: 1;
  margin-bottom: var(--space-8);
}

.metric-label {
  font-size: var(--font-small);
  text-transform: uppercase;
  letter-spacing: 2px;
  opacity: 0.8;
}

/* 3.5 ADN y Filosofia */
.adn-section {
  padding: var(--space-128) 0;
  background-color: var(--bg-main);
}

.adn-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--space-64) auto;
}

.adn-header h2 {
  color: var(--accent-primary);
  margin-bottom: var(--space-24);
}

.adn-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-24);
}

@media (min-width: 768px) {
  .adn-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1024px) {
  .adn-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.adn-card {
  background: var(--bg-panel);
  padding: var(--space-32);
  border: 1px solid var(--border-light);
  border-radius: 4px;
  transition: transform 300ms cubic-bezier(0.4, 0, 0.2, 1), box-shadow 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

.adn-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-primary);
}

.adn-card.highlight {
  background: var(--accent-primary);
  color: white;
  border-color: var(--accent-primary);
}

.adn-card.highlight h3 {
  color: white;
}

.adn-card h3 {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: var(--font-h4);
  color: var(--text-main);
  margin-bottom: var(--space-16);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* 3.6 Services List */
.services-section {
  padding: var(--space-128) 0;
  background-color: var(--bg-panel);
  border-top: 1px solid var(--border-light);
}

.services-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-64);
}

@media (min-width: 1024px) {
  .services-container {
    grid-template-columns: 1fr 2fr;
    align-items: start;
  }
  .services-header {
    position: sticky;
    top: 120px;
  }
}

.services-header h2 {
  color: var(--accent-primary);
  margin-bottom: var(--space-24);
}

.services-list {
  display: flex;
  flex-direction: column;
}

.service-row {
  display: grid;
  grid-template-columns: 1fr;
  padding: var(--space-32) 0;
  border-bottom: 1px solid var(--border-light);
  transition: background-color 300ms ease;
}

.service-row:first-child {
  border-top: 1px solid var(--border-light);
}

@media (min-width: 768px) {
  .service-row {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-32);
    align-items: center;
  }
}

.service-row:hover {
  background-color: rgba(28, 69, 135, 0.03);
}

.service-title h3 {
  font-size: var(--font-h3);
  color: var(--text-main);
  margin: 0;
}

.service-desc p {
  margin: 0;
  margin-bottom: var(--space-16);
  color: var(--text-light);
}

.sub-service-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  padding-left: 0;
}

.sub-service-list li {
  position: relative;
  padding-left: var(--space-24);
  font-size: var(--font-small);
  color: var(--text-main);
  opacity: 0.9;
}

.sub-service-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-green);
  box-shadow: 0 0 4px rgba(26, 140, 122, 0.5);
}

/* ==========================================================================
   Cobertura Geográfica (Section 3.7)
   ========================================================================== */
.coverage-section {
  padding: var(--space-96) 0;
  background-color: var(--bg-main);
}

.coverage-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-64);
  align-items: center;
}

@media (min-width: 1024px) {
  .coverage-layout {
    grid-template-columns: 1fr 1fr;
  }
}

.coverage-header {
  text-align: left;
  margin-bottom: var(--space-48);
}

.coverage-header h2 {
  color: var(--accent-primary);
  margin-bottom: var(--space-16);
}

.coverage-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  gap: var(--space-16);
}

.coverage-map-side {
  width: 100%;
  display: flex;
  justify-content: center;
  position: relative;
}

.coverage-map-img {
  width: 100%;
  max-width: 600px;
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  object-fit: contain;
}

.map-wrapper {
  position: relative;
  width: 100%;
  max-width: 600px;
}

#mexico-svg {
  width: 100%;
  height: auto;
  display: block;
}

#mexico-svg path {
  fill: rgba(42, 42, 40, 0.05); /* Obsidiana muy sutil */
  stroke: rgba(42, 42, 40, 0.15);
  stroke-width: 1px;
  transition: fill var(--transition-base), stroke var(--transition-base), filter var(--transition-base);
  cursor: default;
}

/* Regiones Activas (Bordes e Identidad) */
#mexico-svg path.state-active {
  fill: rgba(50, 81, 128, 0.12); /* Azul Tresmar con transparencia */
  stroke: var(--accent-primary);
  stroke-width: 1.5px;
  cursor: pointer;
}

/* Hover e Interacción Sincronizada */
#mexico-svg path.state-active:hover,
#mexico-svg path.state-active.state-hover {
  fill: rgba(50, 81, 128, 0.35);
  stroke: var(--accent-green); /* Resaltado verde dinámico */
  stroke-width: 2.2px;
  filter: drop-shadow(0 0 12px rgba(50, 81, 128, 0.5));
}


.coverage-state {
  display: flex;
  align-items: center;
  gap: var(--space-16);
  background-color: var(--bg-panel);
  padding: var(--space-16) var(--space-32);
  border-radius: 8px;
  border: 1px solid var(--border-light);
  font-family: 'Barlow Condensed', sans-serif;
  font-size: var(--font-h4, 1.25rem);
  font-weight: 500;
  color: var(--text-main);
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.coverage-state:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-primary);
}

.pin-icon {
  color: var(--accent-orange);
}

/* ==========================================================================
   Cotizador B2B (Section 5)
   ========================================================================== */
.closure-section {
  background-color: var(--accent-primary);
  color: #fff;
  padding: var(--space-128) 0;
  position: relative;
  overflow: hidden;
}

#closure-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.closure-container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-64);
}

@media (min-width: 1024px) {
  .closure-container {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

.closure-content h2 {
  color: #fff;
  margin-bottom: var(--space-24);
}

.closure-content p {
  color: rgba(255, 255, 255, 0.8);
}

.closure-form-container {
  background: var(--bg-panel);
  padding: var(--space-48);
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
}

.b2b-form {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-24);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.form-group label {
  color: var(--text-main);
  font-weight: 500;
  font-size: var(--font-small);
}

.form-group input, 
.form-group select, 
.form-group textarea {
  width: 100%;
  padding: var(--space-16);
  border: 1px solid var(--border-light);
  border-radius: 4px;
  font-family: inherit;
  font-size: var(--font-p);
  color: var(--text-main);
  background-color: var(--bg-main);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

/* Focus outline calculation */
.form-group input:focus, 
.form-group select:focus, 
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(28, 69, 135, 0.1);
}

.form-group input.error {
  border-color: var(--accent-orange);
}

.error-msg {
  color: var(--accent-orange);
  font-size: var(--font-small);
  height: 20px; /* reserva de espacio */
}

.btn-submit {
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 3px;
  background-color: var(--accent-green);
  color: var(--text-main);
  padding: var(--space-16) var(--space-32);
  width: 100%;
  margin-top: var(--space-16);
}

.btn-submit:hover, .btn-submit:focus {
  background-color: #00d636;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background-color: var(--text-main);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-64) 0 var(--space-32) 0;
}

.footer-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-32);
  text-align: center;
}

@media (min-width: 768px) {
  .footer-container {
    grid-template-columns: repeat(4, 1fr);
    text-align: left;
    align-items: start;
  }
}

.footer-logo img {
  margin: 0 auto;
  max-width: 110px;
  height: auto;
}

@media (min-width: 768px) {
  .footer-logo img {
    margin: 0;
  }
}

.footer-contact a {
  color: #fff;
}

.footer-credits {
  font-size: var(--font-small);
  opacity: 0.5;
}

/* ==========================================================================
   Animations & Intersection Observer Classes
   ========================================================================== */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 600ms cubic-bezier(0.4, 0, 0.2, 1), transform 600ms cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   Custom Cursor Implementation (Rule 9)
   ========================================================================== */
.custom-cursor {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 9999;
  display: none;
  transform: translate(-50%, -50%);
}

@media (min-width: 1024px) {
  .custom-cursor {
    display: block;
  }
  #cursor-hint.custom-cursor {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-8);
  }
}

#cursor-hint {
  opacity: 0;
  transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#cursor-hint.is-visible {
  opacity: 1;
}

#cursor-hint .hint-text {
  color: #fff;
  font-size: var(--font-small);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.8);
  white-space: nowrap;
}

#cursor-dot {
  width: 4px;
  height: 4px;
  background-color: var(--accent-primary);
  border-radius: 50%;
  box-shadow: 0 0 8px 1px rgba(26, 140, 122, 0.8);
  transition: background-color 0.2s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.2s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#cursor-dot.cursor-inverted {
  background-color: #FFFFFF;
}

#cursor-dot.cursor-hover {
  background-color: var(--accent-green) !important;
  box-shadow: 0 0 14px 4px rgba(26, 140, 122, 1) !important;
}

#cursor-dot.is-hidden {
  opacity: 0 !important;
}

#cursor-ring {
  width: 48px;
  height: 39px;
  background-image: url('data:image/svg+xml;utf8,<svg viewBox="0 0 64 52" xmlns="http://www.w3.org/2000/svg"><polygon points="25,4 43,38 7,38" fill="none" stroke="%231C4587" stroke-width="5" stroke-linejoin="round"/><polygon points="32,4 53,44 11,44" fill="none" stroke="%231C4587" stroke-width="5" stroke-linejoin="round"/></svg>');
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  border: none;
  border-radius: 0;
  transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#cursor-ring.cursor-inverted {
  background-image: url('data:image/svg+xml;utf8,<svg viewBox="0 0 64 52" xmlns="http://www.w3.org/2000/svg"><polygon points="25,4 43,38 7,38" fill="none" stroke="%23FFFFFF" stroke-width="5" stroke-linejoin="round"/><polygon points="32,4 53,44 11,44" fill="none" stroke="%23FFFFFF" stroke-width="5" stroke-linejoin="round"/></svg>');
}

#cursor-ring.is-hidden {
  opacity: 0 !important;
}
/* ==========================================================================
   Preloader Cinematográfico
   ========================================================================== */
body.loading {
  overflow: hidden !important;
  background-color: var(--accent-primary) !important;
}

body.loading #network-bg {
  z-index: 9998 !important;
  opacity: 1 !important;
  pointer-events: auto !important;
}

.preloader-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: var(--accent-primary);
  background-image: 
    radial-gradient(rgba(255, 255, 255, 0.2) 2px, transparent 2px),
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 40px 40px, 40px 40px, 40px 40px;
  background-position: -2px -2px, 0 0, 0 0;
  z-index: 9997;
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.8s;
}

.preloader-bg.fade-out {
  opacity: 0;
  visibility: hidden;
}

.preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: transparent;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.8s;
}

.preloader.fade-out {
  opacity: 0;
  visibility: hidden;
}

.preloader-content {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-16);
}

.preloader-logo-wrapper {
  width: 80px;
  height: 65px;
  position: relative;
  margin: 0 auto;
}

.preloader-logo-svg {
  width: 100%;
  height: 100%;
  overflow: visible;
  animation: preloader-spin-settle 1.8s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

.pl-dot {
  animation: preloader-pulse 1s infinite alternate;
}

.preloader-brand {
  font-family: 'Space Grotesk', sans-serif;
  color: var(--bg-main);
  margin: 0;
  opacity: 0;
  animation: fade-in-up 0.8s ease forwards 1.2s;
}

.preloader-progress-bar {
  width: 200px;
  height: 2px;
  background-color: rgba(255,255,255,0.1);
  overflow: hidden;
  border-radius: 2px;
}

.preloader-progress {
  width: 0%;
  height: 100%;
  background-color: var(--accent-primary);
  transition: width 0.3s ease;
}

@keyframes preloader-spin-settle {
  0% { transform: scale(0.2) rotate(-540deg); opacity: 0; }
  100% { transform: scale(1) rotate(0deg); opacity: 1; }
}

@keyframes preloader-pulse {
  0% { fill: #FFFFFF; transform: scale(0.9); transform-origin: 29px 28px; }
  100% { fill: #FFFFFF; transform: scale(1.1); transform-origin: 29px 28px; filter: drop-shadow(0 0 6px rgba(255, 255, 255, 0.8)); }
}

@keyframes fade-in-up {
  0% { opacity: 0; transform: translateY(10px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Estándares Estructurales B2B (Bento Grid)
   ========================================================================== */
.standards-section {
  padding: var(--space-96) 0;
  background-color: var(--bg-main);
}

.standards-header {
  text-align: left;
  margin-bottom: var(--space-48);
}

.standards-bento-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-24);
}

@media (min-width: 768px) {
  .standards-bento-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .standards-bento-grid {
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: minmax(280px, auto);
  }
  .bento-steel { grid-column: span 2; }
  .bento-tests { grid-column: span 1; }
  .bento-seismic { grid-column: span 1; }
  .bento-signature { grid-column: span 2; }
}

.bento-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: var(--space-32);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  position: relative;
  overflow: hidden;
}

.bento-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-primary);
}

.bento-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(50, 81, 128, 0.04) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
}

.bento-card:hover::after {
  opacity: 1;
}

.bento-tag {
  display: inline-block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: var(--font-small);
  font-weight: 600;
  color: var(--accent-primary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--space-16);
}

.bento-card h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: var(--font-h3);
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: var(--space-16);
}

.bento-card p {
  font-family: 'Source Serif 4', serif;
  font-size: var(--font-p);
  color: var(--text-muted);
  line-height: 1.7;
}

/* ==========================================================================
   Resolución Normativa (FAQ B2B Accordion)
   ========================================================================== */
.faq-section {
  padding: var(--space-96) 0;
  background-color: var(--bg-panel);
}

.faq-header {
  text-align: left;
  margin-bottom: var(--space-48);
}

.faq-accordion-container {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
}

details.faq-accordion-item {
  border-bottom: 1px solid var(--border-light);
  padding: var(--space-24) 0;
  transition: border-color var(--transition-base);
}

details.faq-accordion-item[open] {
  border-bottom: 1px solid var(--accent-primary);
}

.faq-accordion-summary::-webkit-details-marker {
  display: none;
}

.faq-accordion-summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: 'Space Grotesk', sans-serif;
  font-size: var(--font-h3);
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: color var(--transition-base);
}

.faq-accordion-summary:hover {
  color: var(--accent-primary);
}

.faq-accordion-icon {
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--accent-primary);
  transition: transform var(--transition-base);
}

details.faq-accordion-item[open] .faq-accordion-icon {
  transform: rotate(45deg);
  color: var(--accent-green);
}

.faq-accordion-content {
  margin-top: var(--space-16);
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.4s ease, opacity 0.4s ease;
}

details.faq-accordion-item[open] .faq-accordion-content {
  max-height: 500px; /* Suficiente para el contenido */
  opacity: 1;
}

.faq-accordion-content p {
  font-family: 'Source Serif 4', serif;
  font-size: var(--font-p);
  color: var(--text-muted);
  line-height: 1.8;
}

/* ==========================================================================
   Premium Animation Engines CSS
   ========================================================================== */

/* Split-Text Reveal Animation */
.split-text {
  overflow: hidden;
  position: relative;
}

.split-text-line {
  display: block;
  overflow: hidden;
  position: relative;
}

.split-text-word {
  display: inline-block;
  transform: translateY(110%);
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform;
}

.split-text.is-visible .split-text-word {
  transform: translateY(0);
}

/* Clip-Reveal (Geometric scroll reveals) */
.clip-reveal {
  clip-path: inset(100% 0 0 0);
  transition: clip-path 1.2s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: clip-path;
}

.clip-reveal.is-visible {
  clip-path: inset(0% 0 0 0);
}

/* Magnetic Button support */
.magnetic-btn {
  transition: transform 0.3s cubic-bezier(0.25, 1, 0.5, 1), box-shadow 0.3s ease;
  display: inline-block;
}

.magnetic-btn.is-dragging {
  transition: transform 0.1s cubic-bezier(0.25, 1, 0.5, 1);
}