/* ==========================================================================
   F3&R CONSTRUCCIONES, S.A. DE C.V. - SYSTEM STYLES & DESIGN TOKENS
   Aesthetic: Applied Engineering, Technical Precision & Industrial Elegance
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Montserrat:ital,wght@0,500;0,600;0,700;0,800;1,700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Brand Palette Tokens */
  --primary-blue: #0F2A4A;        /* Azul Ingeniería */
  --primary-blue-dark: #0A1D34;
  --secondary-blue: #1E40AF;      /* Azul Técnico */
  --secondary-blue-hover: #1D399B;
  --accent-copper: #C59A4E;       /* Architectural Gold (#C59A4E) */
  --accent-copper-hover: #D4A759;
  --accent-copper-light: rgba(197, 154, 78, 0.12);
  --structural-steel: #1E293B;    /* Steel Gray (#1E293B) */
  --galvanized-silver: #94A3B8;   /* Gris CAD */
  --silver-light: #E2E8F0;
  --blueprint-light: #F8FAFC;     /* Blueprint Light (#F8FAFC) */
  --surface-white: #FFFFFF;
  --text-dark: #0F172A;
  --text-muted: #475569;

  /* Elevation Shadows */
  --shadow-subtle: 0 4px 20px rgba(15, 42, 74, 0.05);
  --shadow-card: 0 10px 30px rgba(15, 42, 74, 0.08);
  --shadow-card-hover: 0 20px 40px rgba(15, 42, 74, 0.14);
  --shadow-copper: 0 10px 30px rgba(197, 154, 78, 0.22);
  
  /* Layout Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base Setup */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--text-dark);
  background-color: var(--blueprint-light);
  background-image: 
    linear-gradient(to right, rgba(148, 163, 184, 0.08) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(148, 163, 184, 0.08) 1px, transparent 1px);
  background-size: 32px 32px;
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Montserrat', sans-serif;
  color: var(--primary-blue);
  font-weight: 700;
  line-height: 1.2;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.mono {
  font-family: 'JetBrains Mono', monospace;
}

/* Container Utilities */
.container {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* Accent Ampersand & Metallic Highlights */
.ampersand {
  color: var(--accent-copper);
  font-family: 'Montserrat', serif;
  font-style: italic;
  font-weight: 800;
  display: inline-block;
  text-shadow: 0 1px 2px rgba(197, 138, 56, 0.3);
}

.copper-text {
  color: var(--accent-copper);
}

.copper-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: var(--accent-copper-light);
  border: 1px solid rgba(197, 138, 56, 0.3);
  border-radius: var(--radius-full);
  color: var(--accent-copper);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-family: 'JetBrains Mono', monospace;
}

/* Section Common Styles */
.section {
  padding: 5rem 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem auto;
}

.section-subtitle {
  color: var(--accent-copper);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
  display: block;
}

.section-title {
  font-size: 2.25rem;
  color: var(--primary-blue);
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.section-description {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

/* Button UI Toolkit */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.75rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: var(--transition-normal);
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--secondary-blue);
  color: var(--surface-white);
  box-shadow: 0 4px 14px rgba(30, 64, 175, 0.3);
  border-color: var(--secondary-blue);
}

.btn-primary:hover {
  background-color: var(--secondary-blue-hover);
  border-color: var(--accent-copper);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(30, 64, 175, 0.4), 0 0 12px rgba(197, 138, 56, 0.3);
}

.btn-secondary {
  background-color: transparent;
  color: var(--structural-steel);
  border-color: var(--galvanized-silver);
}

.btn-secondary:hover {
  border-color: var(--accent-copper);
  color: var(--accent-copper);
  background-color: rgba(197, 138, 56, 0.05);
  transform: translateY(-2px);
}

.btn-accent {
  background: linear-gradient(135deg, var(--accent-copper), #B37B2C);
  color: var(--surface-white);
  box-shadow: var(--shadow-copper);
}

.btn-accent:hover {
  background: linear-gradient(135deg, var(--accent-copper-hover), #C58A38);
  transform: translateY(-2px);
  box-shadow: 0 12px 35px rgba(197, 138, 56, 0.4);
}

/* ==========================================================================
   HEADER & STICKY NAVIGATION
   ========================================================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(15, 42, 74, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(197, 138, 56, 0.3);
  transition: var(--transition-normal);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}

.brand-logo-wrap {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-logo-img {
  height: 52px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 2px 6px rgba(0,0,0,0.4));
}

.brand-text-block {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--surface-white);
  letter-spacing: 0.05em;
  line-height: 1;
}

.brand-subtitle {
  font-size: 0.62rem;
  color: var(--accent-copper);
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-top: 4px;
  font-weight: 600;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2.75rem;
  list-style: none;
}

.nav-link {
  color: var(--silver-light);
  font-size: 0.98rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  transition: var(--transition-fast);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--surface-white);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-copper);
  transition: var(--transition-normal);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

/* Dropdown Menu */
.nav-item-dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  width: 270px;
  background: var(--primary-blue-dark);
  border: 1px solid rgba(197, 138, 56, 0.35);
  border-radius: var(--radius-md);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
  padding: 0.75rem 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition-normal);
  list-style: none;
}

.nav-item-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 1.25rem;
  color: var(--silver-light);
  font-size: 0.85rem;
  transition: var(--transition-fast);
}

.dropdown-item a:hover {
  background: rgba(197, 138, 56, 0.18);
  color: var(--surface-white);
  padding-left: 1.5rem;
}

.dropdown-item .vector-num {
  color: var(--accent-copper);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 600;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--surface-white);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Mobile Nav Menu drawer */
.mobile-nav {
  display: none;
  position: fixed;
  top: 84px;
  left: 0;
  width: 100%;
  background: var(--primary-blue-dark);
  border-bottom: 2px solid var(--accent-copper);
  padding: 1.5rem;
  z-index: 999;
}

.mobile-nav.open {
  display: block;
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* ==========================================================================
   HERO SECTION & WEBGL 3D CANVAS
   ========================================================================== */
.hero {
  padding-top: 150px;
  padding-bottom: 80px;
  background: radial-gradient(circle at 75% 30%, rgba(30, 64, 175, 0.08) 0%, transparent 60%);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}

.hero-content {
  z-index: 2;
}

.hero-title {
  font-size: 3.1rem;
  color: var(--primary-blue);
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin: 1.25rem 0;
}

.hero-title span.accent-highlight {
  background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: block;
}

.hero-subtitle {
  font-size: 1.12rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 2rem;
  max-width: 600px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(148, 163, 184, 0.3);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--primary-blue);
  line-height: 1;
}

.stat-number .copper-plus {
  color: var(--accent-copper);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
  font-weight: 500;
}

/* 3D Canvas Box */
.hero-canvas-wrap {
  position: relative;
  width: 100%;
  height: 520px;
  background: rgba(15, 42, 74, 0.03);
  border: 1px solid rgba(197, 138, 56, 0.3);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

#dome-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Dynamic Cursor Pointer Vector Tooltip HUD */
.dome-vector-tooltip {
  position: absolute;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 100;
  opacity: 0;
  transform: translate(-50%, -125%) scale(0.9);
  transition: opacity 180ms ease, transform 180ms cubic-bezier(0.4, 0, 0.2, 1);
  background: rgba(15, 42, 74, 0.95);
  backdrop-filter: blur(12px);
  border: 1px solid var(--accent-copper);
  border-radius: var(--radius-md);
  padding: 0.65rem 1.1rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4), 0 0 15px rgba(197, 154, 78, 0.4);
  white-space: nowrap;
}

.dome-vector-tooltip.active {
  opacity: 1;
  transform: translate(-50%, -125%) scale(1);
}

.dome-vector-tooltip .tooltip-badge {
  color: var(--accent-copper);
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  margin-bottom: 0.2rem;
}

.dome-vector-tooltip .tooltip-desc {
  color: #FFFFFF;
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 0.8rem;
}

.canvas-overlay-tag {
  position: absolute;
  bottom: 1rem;
  left: 1rem;
  background: rgba(15, 42, 74, 0.92);
  backdrop-filter: blur(8px);
  border: 1px solid var(--accent-copper);
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  color: var(--surface-white);
  font-size: 0.78rem;
  font-family: 'JetBrains Mono', monospace;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: var(--shadow-subtle);
  pointer-events: none;
}

.canvas-overlay-tag .node-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-copper);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-copper);
}

/* ==========================================================================
   B2B CREDIBILITY MARQUEE
   ========================================================================== */
.credibility-section {
  background: var(--primary-blue);
  color: var(--surface-white);
  padding: 2.5rem 0;
  border-top: 2px solid var(--accent-copper);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  overflow: hidden;
}

.marquee-label {
  text-align: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-copper);
  margin-bottom: 1.5rem;
  font-weight: 600;
}

.marquee-track-wrap {
  display: flex;
  overflow: hidden;
  user-select: none;
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

.marquee-track {
  display: flex;
  align-items: center;
  gap: 4rem;
  animation: marquee 30s linear infinite;
  white-space: nowrap;
}

.marquee-track:hover {
  animation-play-state: paused;
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.client-logo-card {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  transition: var(--transition-normal);
  filter: grayscale(100%) opacity(0.7);
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--silver-light);
}

.client-logo-card:hover {
  filter: grayscale(0%) opacity(1);
  border-color: var(--accent-copper);
  background: rgba(197, 138, 56, 0.15);
  color: var(--surface-white);
}

/* ==========================================================================
   MODELO INTEGRAL F3&R (4 VECTORES DE VALOR)
   ========================================================================== */
.vectors-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.vector-card {
  background: var(--surface-white);
  border: 1px solid var(--galvanized-silver);
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-subtle);
  cursor: pointer;
}

.vector-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--galvanized-silver);
  transition: var(--transition-normal);
}

.vector-card:hover, .vector-card.active {
  transform: translateY(-6px);
  border-color: var(--accent-copper);
  box-shadow: var(--shadow-card-hover);
}

.vector-card:hover::before, .vector-card.active::before {
  background: var(--accent-copper);
}

.vector-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.vector-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--accent-copper);
}

.vector-icon {
  width: 44px;
  height: 44px;
  background: var(--blueprint-light);
  border: 1px solid rgba(197, 138, 56, 0.3);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-blue);
  transition: var(--transition-normal);
}

.vector-card:hover .vector-icon {
  background: var(--accent-copper);
  color: var(--surface-white);
}

.vector-title {
  font-size: 1.3rem;
  color: var(--primary-blue);
  margin-bottom: 0.75rem;
  letter-spacing: 0.02em;
}

.vector-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 1.5rem;
}

.subservice-list {
  list-style: none;
  margin-top: auto;
  border-top: 1px dashed var(--silver-light);
  padding-top: 1.25rem;
}

.subservice-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--structural-steel);
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.subservice-item::before {
  content: '▸';
  color: var(--accent-copper);
  font-size: 0.9rem;
}

/* ==========================================================================
   DIFERENCIADORES COMPETITIVOS
   ========================================================================== */
.differentiators-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.diff-card {
  background: var(--surface-white);
  border: 1px solid rgba(148, 163, 184, 0.3);
  border-radius: var(--radius-md);
  padding: 2rem;
  position: relative;
  transition: var(--transition-normal);
}

.diff-card:hover {
  border-color: var(--accent-copper);
  box-shadow: var(--shadow-card);
  transform: translateY(-3px);
}

.diff-badge-num {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--galvanized-silver);
  font-weight: 600;
}

.diff-card:hover .diff-badge-num {
  color: var(--accent-copper);
}

.diff-title {
  font-size: 1.15rem;
  color: var(--primary-blue);
  margin-bottom: 0.75rem;
}

.diff-text {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ==========================================================================
   PORTAFOLIO DE PROYECTOS & CASOS DE ESTUDIO
   ========================================================================== */
.filter-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.6rem 1.25rem;
  background: var(--surface-white);
  border: 1px solid var(--galvanized-silver);
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition-fast);
}

.filter-btn:hover, .filter-btn.active {
  background: var(--primary-blue);
  color: var(--surface-white);
  border-color: var(--accent-copper);
  box-shadow: var(--shadow-subtle);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.project-card {
  background: var(--surface-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--galvanized-silver);
  box-shadow: var(--shadow-card);
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-copper);
  box-shadow: var(--shadow-card-hover);
}

.project-image-wrap {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--primary-blue);
}

.project-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.project-card:hover .project-img {
  transform: scale(1.06);
}

.project-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15, 42, 74, 0.95) 0%, rgba(15, 42, 74, 0.4) 60%, transparent 100%);
  opacity: 0;
  transition: var(--transition-normal);
  display: flex;
  align-items: flex-end;
  padding: 1.5rem;
}

.project-card:hover .project-overlay {
  opacity: 1;
}

.project-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.project-tag {
  padding: 0.3rem 0.75rem;
  background: rgba(197, 138, 56, 0.25);
  border: 1px solid var(--accent-copper);
  color: var(--surface-white);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  font-family: 'JetBrains Mono', monospace;
}

.project-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-location {
  font-size: 0.8rem;
  color: var(--accent-copper);
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 0.35rem;
}

.project-title {
  font-size: 1.25rem;
  color: var(--primary-blue);
  margin-bottom: 0.75rem;
}

.project-meta {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.project-link-btn {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--secondary-blue);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.project-link-btn:hover {
  color: var(--accent-copper);
}

/* ==========================================================================
   EMBUDO DE COTIZACIÓN B2B MULTI-PASO
   ========================================================================== */
.funnel-card {
  background: var(--surface-white);
  border: 2px solid var(--accent-copper);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-copper);
  padding: 3rem;
  max-width: 960px;
  margin: 0 auto;
}

/* Progress Indicator Bar */
.progress-bar-wrap {
  display: flex;
  justify-content: space-between;
  position: relative;
  margin-bottom: 3rem;
}

.progress-bar-wrap::before {
  content: '';
  position: absolute;
  top: 18px;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--silver-light);
  z-index: 1;
}

.progress-bar-fill {
  position: absolute;
  top: 18px;
  left: 0;
  height: 3px;
  background: var(--accent-copper);
  z-index: 1;
  transition: var(--transition-slow);
  width: 0%;
}

.step-node {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.step-circle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--surface-white);
  border: 3px solid var(--galvanized-silver);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  transition: var(--transition-normal);
}

.step-node.active .step-circle {
  border-color: var(--accent-copper);
  background: var(--accent-copper);
  color: var(--surface-white);
  box-shadow: 0 0 12px rgba(197, 138, 56, 0.4);
}

.step-node.completed .step-circle {
  border-color: var(--primary-blue);
  background: var(--primary-blue);
  color: var(--surface-white);
}

.step-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

.step-node.active .step-label {
  color: var(--accent-copper);
}

/* Step Form Content */
.form-step {
  display: none;
}

.form-step.active {
  display: block;
  animation: fadeIn 300ms ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.step-title {
  font-size: 1.5rem;
  color: var(--primary-blue);
  margin-bottom: 0.5rem;
}

.step-subtitle {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

/* Sector Selector Cards */
.sector-options-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.sector-option-card {
  border: 1px solid var(--galvanized-silver);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  cursor: pointer;
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background: var(--blueprint-light);
}

.sector-option-card:hover, .sector-option-card.selected {
  border-color: var(--accent-copper);
  background: var(--surface-white);
  box-shadow: var(--shadow-subtle);
}

.sector-option-card.selected {
  border-width: 2px;
  background: rgba(197, 138, 56, 0.08);
}

.sector-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--surface-white);
  border: 1px solid var(--accent-copper);
  color: var(--accent-copper);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 1rem;
}

.sector-name {
  font-weight: 700;
  color: var(--primary-blue);
  font-size: 1rem;
}

/* Vector Checkbox Pills */
.vector-checkboxes-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

.vector-checkbox-pill {
  border: 1px solid var(--galvanized-silver);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  cursor: pointer;
  transition: var(--transition-fast);
  background: var(--blueprint-light);
}

.vector-checkbox-pill:hover, .vector-checkbox-pill.selected {
  border-color: var(--accent-copper);
  background: var(--surface-white);
}

.vector-checkbox-pill.selected {
  border-color: var(--accent-copper);
  background: rgba(197, 138, 56, 0.08);
}

.pill-check {
  width: 20px;
  height: 20px;
  border: 2px solid var(--galvanized-silver);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}

.vector-checkbox-pill.selected .pill-check {
  background: var(--accent-copper);
  border-color: var(--accent-copper);
  color: var(--surface-white);
}

.pill-text {
  font-weight: 600;
  color: var(--primary-blue);
  font-size: 0.95rem;
}

/* Blueprint Form Inputs */
.form-grid-2col {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--structural-steel);
  font-family: 'JetBrains Mono', monospace;
}

.form-input, .form-textarea {
  padding: 0.8rem 1rem;
  background: var(--blueprint-light);
  border: 1px solid var(--galvanized-silver);
  border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  color: var(--text-dark);
  transition: var(--transition-fast);
}

.form-input:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--secondary-blue);
  background: var(--surface-white);
  box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.15);
}

.form-actions {
  display: flex;
  justify-content: space-between;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--silver-light);
}

/* Modal Popup System */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 42, 74, 0.8);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: var(--surface-white);
  border: 2px solid var(--accent-copper);
  border-radius: var(--radius-lg);
  max-width: 800px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.4);
  position: relative;
  padding: 2.5rem;
}

.modal-close-btn {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition-fast);
}

.modal-close-btn:hover {
  color: var(--accent-copper);
}

/* ==========================================================================
   FOOTER CORPORATIVO
   ========================================================================== */
.footer {
  background: var(--primary-blue);
  color: var(--surface-white);
  padding-top: 5rem;
  padding-bottom: 2rem;
  border-top: 3px solid var(--accent-copper);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-brand-title {
  font-size: 1.5rem;
  color: var(--surface-white);
  margin-bottom: 1rem;
}

.footer-brand-desc {
  color: var(--silver-light);
  font-size: 0.92rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.footer-column-title {
  font-size: 1.05rem;
  color: var(--accent-copper);
  margin-bottom: 1.25rem;
  font-family: 'JetBrains Mono', monospace;
  text-transform: uppercase;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-link {
  color: var(--silver-light);
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

.footer-link:hover {
  color: var(--surface-white);
  padding-left: 0.35rem;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  color: var(--silver-light);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--silver-light);
}

/* ==========================================================================
   RESPONSIVE MEDIA QUERIES
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  
  .vectors-grid, .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .differentiators-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }

  .mobile-toggle {
    display: block;
  }

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

  .vectors-grid, .differentiators-grid, .portfolio-grid, .sector-options-grid, .vector-checkboxes-grid {
    grid-template-columns: 1fr;
  }

  .form-grid-2col {
    grid-template-columns: 1fr;
  }

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

  .funnel-card {
    padding: 1.5rem;
  }


}

/* Portfolio Disclaimer Banner */
.portfolio-disclaimer-note {
  max-width: 920px;
  margin: 1.5rem auto 2.5rem auto;
  padding: 1rem 1.5rem;
  background: rgba(15, 42, 74, 0.95);
  backdrop-filter: blur(8px);
  border: 1px solid var(--accent-copper);
  border-radius: var(--radius-md);
  color: #F8FAFC;
  font-size: 0.88rem;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  line-height: 1.5;
  box-shadow: 0 10px 25px rgba(15, 42, 74, 0.18);
}

.portfolio-disclaimer-note strong {
  color: #C59A4E;
  font-weight: 700;
}

/* Modal Photo Carousel System */
.modal-carousel {
  position: relative;
  width: 100%;
  height: 340px;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 1rem;
  background: #0F172A;
  border: 1px solid rgba(197, 154, 78, 0.4);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.modal-carousel-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: none;
  animation: fadeIn 300ms ease-in-out;
}

.modal-carousel-img.active {
  display: block;
}

.modal-carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(15, 42, 74, 0.85);
  color: var(--accent-copper);
  border: 1px solid var(--accent-copper);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: bold;
  cursor: pointer;
  z-index: 10;
  transition: all 200ms ease;
  user-select: none;
}

.modal-carousel-btn:hover {
  background: var(--accent-copper);
  color: var(--structural-steel);
  box-shadow: 0 0 15px rgba(197, 154, 78, 0.8);
}

.modal-carousel-prev { left: 1rem; }
.modal-carousel-next { right: 1rem; }

.modal-carousel-counter {
  position: absolute;
  bottom: 1rem;
  right: 1rem;
  background: rgba(15, 42, 74, 0.9);
  border: 1px solid var(--accent-copper);
  color: #FFFFFF;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-sm);
  z-index: 10;
}

.modal-carousel-thumbs {
  display: flex;
  gap: 0.65rem;
  margin-bottom: 1.5rem;
  justify-content: center;
}

.modal-thumb-item {
  width: 75px;
  height: 48px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 2px solid transparent;
  cursor: pointer;
  opacity: 0.55;
  transition: all 200ms ease;
}

.modal-thumb-item:hover, .modal-thumb-item.active {
  border-color: var(--accent-copper);
  opacity: 1;
  transform: translateY(-2px);
}

.modal-thumb-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ==========================================================================
   INTERACTIVE PORTFOLIO (BEFORE / AFTER BLUEPRINT VS REALITY SLIDER)
   ========================================================================== */
.before-after-container {
  position: relative;
  width: 100%;
  max-width: 1150px;
  height: 580px;
  margin: 2.5rem auto 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(15, 42, 74, 0.25);
  border: 1px solid rgba(197, 154, 78, 0.4);
  user-select: none;
  background: var(--structural-steel);
}

.ba-image-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
}

.ba-before {
  background-image: url('assets/constructed_reality.jpg');
  z-index: 1;
}

.ba-after {
  background-image: url('assets/blueprint_cad.jpg');
  z-index: 2;
  width: 50%;
  border-right: 3px solid var(--accent-copper);
}

.ba-label {
  position: absolute;
  top: 1.5rem;
  padding: 0.5rem 1.25rem;
  background: rgba(15, 42, 74, 0.88);
  backdrop-filter: blur(8px);
  color: #FFFFFF;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(197, 154, 78, 0.5);
  text-transform: uppercase;
  z-index: 10;
  pointer-events: none;
}

.ba-label-left {
  left: 1.5rem;
}

.ba-label-right {
  right: 1.5rem;
  border-color: rgba(255, 255, 255, 0.2);
}

.ba-slider-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 4px;
  background: var(--accent-copper);
  z-index: 20;
  cursor: ew-resize;
  transform: translateX(-50%);
  box-shadow: 0 0 15px rgba(197, 154, 78, 0.8);
}

.ba-slider-button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--accent-copper);
  color: var(--structural-steel);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.25rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5), 0 0 0 4px rgba(197, 154, 78, 0.3);
  border: 2px solid #FFFFFF;
  cursor: ew-resize;
}

/* Dual Tabs System */
.metodo-tabs-container {
  margin-top: 3.5rem;
}

.metodo-tabs-nav {
  display: flex;
  justify-content: center;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.metodo-tab-btn {
  padding: 1.1rem 2.2rem;
  background: #FFFFFF;
  border: 2px solid rgba(148, 163, 184, 0.3);
  border-radius: var(--radius-md);
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  color: var(--structural-steel);
  cursor: pointer;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  box-shadow: 0 4px 15px rgba(15, 42, 74, 0.05);
}

.metodo-tab-btn:hover {
  border-color: var(--accent-copper);
  color: var(--accent-copper);
  background: rgba(197, 154, 78, 0.06);
  transform: translateY(-2px);
}

.metodo-tab-btn.active {
  background: var(--structural-steel);
  color: var(--accent-copper);
  border-color: var(--accent-copper);
  box-shadow: 0 10px 30px rgba(15, 42, 74, 0.22);
}

.metodo-tab-content {
  display: none;
  animation: fadeIn 350ms ease-in-out;
}

.metodo-tab-content.active {
  display: block;
}

.metodo-teaser-card {
  background: linear-gradient(135deg, var(--structural-steel) 0%, #0F172A 100%);
  border: 1px solid rgba(197, 154, 78, 0.4);
  border-radius: var(--radius-xl);
  padding: 3.5rem 3rem;
  margin-top: 0;
  color: #FFFFFF;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(15, 42, 74, 0.15);
}

.metodo-teaser-card::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -10%;
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, rgba(197, 154, 78, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.metodo-header-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  background: rgba(197, 154, 78, 0.15);
  border: 1px solid var(--accent-copper);
  border-radius: var(--radius-full);
  color: var(--accent-copper);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.metodo-title {
  font-size: 2.2rem;
  color: #FFFFFF;
  margin-bottom: 1rem;
}

.metodo-description {
  font-size: 1.1rem;
  color: #94A3B8;
  max-width: 800px;
  line-height: 1.7;
  margin-bottom: 2rem;
}

.metodo-pillars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.metodo-pillar-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1.25rem;
  border-radius: var(--radius-md);
  border-left: 3px solid var(--accent-copper);
}

.metodo-pillar-num {
  color: var(--accent-copper);
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 0.25rem;
}

.metodo-pillar-name {
  color: #FFFFFF;
  font-weight: 600;
  font-size: 1rem;
}

@media (max-width: 768px) {
  .before-after-container {
    height: 380px;
  }
  .metodo-teaser-card {
    padding: 2rem 1.5rem;
  }
}