/* ==========================================================================
   CONSULTORÍA DE ARQUITECTURA & INGENIERÍA - ESTILOS PRINCIPALES
   Firma: CS CONSULTORES EMPRESARIALES SAS
   Paleta: Azul #449ad5 | Gris #757575 | Blanco/Claro #dfe3e5
   Tipografía: Google Sans Bold (Principal) / Google Sans Regular (Secundaria)
   Diseño: Responsive Completo & Experiencia Móvil Tipo App Nativa
   ========================================================================== */

:root {
  /* Paleta Oficial */
  --color-blue: #449ad5;
  --color-blue-hover: #3284be;
  --color-blue-light: rgba(68, 154, 213, 0.12);
  --color-blue-glow: rgba(68, 154, 213, 0.35);

  --color-gray: #757575;
  --color-gray-light: #9e9e9e;
  --color-gray-dark: #494949;

  --color-white: #dfe3e5;
  --color-pure-white: #ffffff;

  /* Contrastes Técnicos */
  --bg-dark: #0c1219;
  --bg-card: #131c26;
  --bg-card-hover: #192533;
  --bg-input: #0a0f15;

  --border-subtle: rgba(223, 227, 229, 0.12);
  --border-strong: rgba(68, 154, 213, 0.35);
  --border-blue: #449ad5;

  /* Tipografías */
  --font-primary-bold: 'Google Sans', 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-secondary-regular: 'Google Sans', 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-tech-mono: 'Space Grotesk', 'SF Mono', Consolas, monospace;

  /* Transiciones y Sombras */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --shadow-blue-glow: 0 0 25px rgba(68, 154, 213, 0.3);

  /* Medidas de pantalla y Safe Area Móvil */
  --mobile-bottom-nav-height: 64px;
}

/* Reset y Base */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-dark);
  color: var(--color-white);
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-secondary-regular);
  font-weight: 400;
  line-height: 1.65;
  background-color: var(--bg-dark);
  color: var(--color-white);
  overflow-x: hidden;
  position: relative;
}

/* Tipografía de Encabezados */
h1,
h2,
h3,
h4,
h5,
h6,
.hero-title,
.section-title,
.brand-name,
.quote-main-value,
.metric-number,
.leed-kpi-num {
  font-family: var(--font-primary-bold);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-pure-white);
  letter-spacing: -0.02em;
}

p {
  color: #b5bec5;
  font-size: 1rem;
}

a {
  color: var(--color-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-white);
}

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

/* Layout Utilities */
.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.section-padding {
  padding-top: 6rem;
  padding-bottom: 6rem;
  position: relative;
}

/* Encabezados de Sección */
.section-header {
  text-align: center;
  max-width: 820px;
  margin: 0 auto 3.5rem auto;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-primary-bold);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-blue);
  background: var(--color-blue-light);
  border: 1px solid rgba(68, 154, 213, 0.3);
  padding: 0.35rem 0.85rem;
  border-radius: 4px;
  margin-bottom: 1rem;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: var(--color-pure-white);
}

.section-subtitle {
  font-size: 1.1rem;
  color: #a7b2bc;
  line-height: 1.6;
}

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-family: var(--font-primary-bold);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.75rem 1.6rem;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-smooth);
  text-align: center;
  user-select: none;
}

.btn-primary {
  background-color: var(--color-blue);
  color: #081119;
  border-color: var(--color-blue);
  box-shadow: 0 4px 15px rgba(68, 154, 213, 0.35);
}

.btn-primary:hover {
  background-color: var(--color-blue-hover);
  border-color: var(--color-blue-hover);
  color: #04090e;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(68, 154, 213, 0.5);
}

.btn-secondary {
  background-color: var(--bg-card);
  color: var(--color-white);
  border-color: var(--border-subtle);
}

.btn-secondary:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--color-blue);
  color: var(--color-pure-white);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-white);
  border-color: rgba(223, 227, 229, 0.25);
}

.btn-outline:hover {
  border-color: var(--color-blue);
  color: var(--color-blue);
  background-color: var(--color-blue-light);
  transform: translateY(-2px);
}

.btn-whatsapp {
  background-color: #25D366;
  color: #ffffff;
  border-color: #25D366;
  box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
}

.btn-whatsapp:hover {
  background-color: #1eb857;
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.5);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 0.95rem 2rem;
  font-size: 1.05rem;
}

.btn-block {
  width: 100%;
}

/* ==========================================================================
   TOP BAR
   ========================================================================== */
.top-meta-bar {
  background-color: #070b0f;
  border-bottom: 1px solid rgba(223, 227, 229, 0.08);
  font-family: var(--font-tech-mono);
  font-size: 0.72rem;
  color: var(--color-gray);
  padding: 0.4rem 0;
}

.meta-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.meta-coords {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.coord-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #22c55e;
  box-shadow: 0 0 8px #22c55e;
}

.meta-label {
  color: #555e67;
}

.meta-val {
  color: var(--color-white);
}

.meta-divider {
  color: #333d47;
}

.meta-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.brand-rename-badge {
  background: rgba(68, 154, 213, 0.12);
  border: 1px solid rgba(68, 154, 213, 0.35);
  color: var(--color-blue);
  padding: 0.2rem 0.65rem;
  border-radius: 4px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-secondary-regular);
  font-size: 0.72rem;
  transition: all var(--transition-fast);
}

.brand-rename-badge:hover {
  background: var(--color-blue);
  color: #070b0f;
}

.meta-phone {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--color-white);
  transition: color var(--transition-fast);
}

.meta-phone:hover {
  color: #25D366;
}

/* ==========================================================================
   HEADER Y LOGOTIPO
   ========================================================================== */
.main-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(12, 18, 25, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(223, 227, 229, 0.08);
  transition: all var(--transition-smooth);
}

.main-header.scrolled {
  background-color: rgba(9, 14, 20, 0.98);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  overflow: hidden;
  max-height: 42px;
}

.custom-logo-file {
  max-height: 40px;
  width: auto;
  object-fit: contain;
}

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

.brand-name {
  font-size: 1.22rem;
  line-height: 1.1;
  color: var(--color-pure-white);
  letter-spacing: -0.01em;
}

.brand-tagline {
  font-family: var(--font-tech-mono);
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--color-blue);
  margin-top: 0.15rem;
}

.desktop-nav .nav-list {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 1.5rem;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: #b5bec5;
  transition: color var(--transition-fast);
  position: relative;
  padding: 0.3rem 0;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-blue);
  transition: width var(--transition-fast);
}

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

.highlight-link {
  color: var(--color-blue);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-blue);
  animation: pulseBeacon 2s infinite;
}

@keyframes pulseBeacon {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(68, 154, 213, 0.7);
  }

  70% {
    transform: scale(1);
    box-shadow: 0 0 0 7px rgba(68, 154, 213, 0);
  }

  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(68, 154, 213, 0);
  }
}

.header-cta-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  position: absolute;
  right: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
}

/* Botón Hamburguesa Táctil */
.mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 10px;
  cursor: pointer;
  z-index: 1100;
  transition: all var(--transition-fast);
}

.mobile-toggle .bar {
  width: 20px;
  height: 2px;
  background-color: var(--color-white);
  border-radius: 2px;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  transform-origin: center;
}

.mobile-toggle.is-active .bar-1 {
  transform: translateY(7px) rotate(45deg);
  background-color: var(--color-blue);
}

.mobile-toggle.is-active .bar-2 {
  opacity: 0;
  transform: scaleX(0);
}

.mobile-toggle.is-active .bar-3 {
  transform: translateY(-7px) rotate(-45deg);
  background-color: var(--color-blue);
}

/* ==========================================================================
   DRAWER MÓVIL PANTALLA COMPLETA
   ========================================================================== */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  max-width: 380px;
  background-color: #090e15;
  border-left: 1px solid rgba(68, 154, 213, 0.25);
  box-shadow: -10px 0 35px rgba(0, 0, 0, 0.7);
  z-index: 2100;
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  overflow-y: auto;
  pointer-events: none;
}

.mobile-drawer.open {
  transform: translateX(0);
  pointer-events: auto;
}

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(223, 227, 229, 0.1);
  padding-bottom: 1rem;
  margin-bottom: 1.5rem;
}

.drawer-title {
  font-family: var(--font-tech-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--color-blue);
  font-weight: 700;
}

.drawer-close-btn {
  background: #162331;
  border: 1px solid rgba(223, 227, 229, 0.15);
  color: var(--color-white);
  width: 34px;
  height: 34px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  flex-grow: 1;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.85rem 1rem;
  border-radius: 8px;
  background-color: #111a24;
  border: 1px solid rgba(223, 227, 229, 0.06);
  font-family: var(--font-primary-bold);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-white);
  transition: all var(--transition-fast);
}

.mobile-nav-link svg {
  color: var(--color-blue);
}

.mobile-nav-link:hover,
.mobile-nav-link:active {
  background-color: var(--color-blue-light);
  border-color: var(--color-blue);
  color: var(--color-pure-white);
}

.mobile-drawer-footer {
  border-top: 1px solid rgba(223, 227, 229, 0.1);
  padding-top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  padding: 4.5rem 0 3.5rem 0;
  background: radial-gradient(circle at 10% 20%, rgba(68, 154, 213, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(23, 34, 46, 0.8) 0%, transparent 50%),
    var(--bg-dark);
  overflow: hidden;
}

.cad-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.35;
  z-index: 1;
}

.hero-overlay-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(to right, rgba(223, 227, 229, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(223, 227, 229, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 1;
}

.hero-container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(68, 154, 213, 0.09);
  border: 1px solid rgba(68, 154, 213, 0.3);
  padding: 0.35rem 0.95rem;
  border-radius: 50px;
  width: fit-content;
  margin-bottom: 1.25rem;
}

.pill-beacon {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-blue);
  box-shadow: 0 0 10px var(--color-blue);
}

.pill-text {
  font-family: var(--font-primary-bold);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-blue);
}

.hero-title {
  font-size: 3.3rem;
  line-height: 1.12;
  margin-bottom: 1.4rem;
  color: var(--color-pure-white);
}

.text-blue {
  color: var(--color-blue);
}

.text-green {
  color: #22c55e;
}

.text-gradient {
  background: linear-gradient(135deg, #dfe3e5 0%, #449ad5 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 1.12rem;
  color: #aeb9c2;
  line-height: 1.65;
  margin-bottom: 2rem;
  max-width: 620px;
}

.hero-cta-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.8rem;
}

/* ==========================================================================
   BARRA DE NAVEGACIÓN MÓVIL INFERIOR (TIPO APP)
   ========================================================================== */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--mobile-bottom-nav-height);
  background: rgba(9, 14, 21, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid rgba(68, 154, 213, 0.25);
  box-shadow: 0 -5px 25px rgba(0, 0, 0, 0.6);
  z-index: 1800;
  padding: 0 0.5rem;
  padding-bottom: env(safe-area-inset-bottom);
}

.bottom-nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  color: #8392a0;
  font-size: 0.68rem;
  font-family: var(--font-secondary-regular);
  text-decoration: none;
  transition: all var(--transition-fast);
  padding: 4px 0;
}

.bottom-nav-item svg {
  transition: transform var(--transition-fast);
}

.bottom-nav-item:hover,
.bottom-nav-item.active {
  color: var(--color-blue);
}

.bottom-nav-item.active svg {
  transform: translateY(-2px);
  color: var(--color-blue);
}

.bottom-nav-cta {
  position: relative;
  top: -12px;
}

.nav-cta-circle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--color-blue);
  color: #070e16;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(68, 154, 213, 0.6);
  border: 3px solid #090e15;
  transition: transform var(--transition-fast);
}

.bottom-nav-cta:active .nav-cta-circle {
  transform: scale(0.92);
}

.bottom-nav-cta span {
  margin-top: 2px;
  font-weight: 700;
  color: var(--color-white);
}

.bottom-nav-item.text-whatsapp {
  color: #25D366;
}

/* ==========================================================================
   CONTACTO
   ========================================================================== */
.contact-section {
  background-color: var(--bg-dark);
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 3rem;
}

.contact-info-panel {
  display: flex;
  flex-direction: column;
}

.text-left {
  text-align: left;
}

.contact-lead {
  font-size: 1rem;
  color: #adb9c3;
  margin-bottom: 2rem;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.method-item {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
}

.method-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background-color: var(--color-blue-light);
  border: 1px solid rgba(68, 154, 213, 0.3);
  color: var(--color-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.method-title {
  font-family: var(--font-primary-bold);
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--color-pure-white);
}

.method-detail {
  font-size: 0.85rem;
  color: #a4b0bb;
}

.contact-form-panel {
  background-color: var(--bg-card);
  border: 1px solid rgba(223, 227, 229, 0.12);
  border-radius: 12px;
  padding: 2.2rem;
}

.form-header-badge {
  margin-bottom: 1.4rem;
  border-bottom: 1px solid rgba(223, 227, 229, 0.08);
  padding-bottom: 0.75rem;
}

.form-header-badge span {
  font-family: var(--font-primary-bold);
  font-size: 0.72rem;
  color: var(--color-blue);
  font-weight: 700;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-family: var(--font-primary-bold);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--color-white);
  margin-bottom: 0.4rem;
}

.form-group input,
.form-group textarea,
.form-select {
  width: 100%;
  background-color: var(--bg-input);
  border: 1px solid rgba(223, 227, 229, 0.18);
  border-radius: 6px;
  padding: 0.75rem 0.9rem;
  color: var(--color-pure-white);
  font-family: var(--font-secondary-regular);
  font-size: 1rem;
  outline: none;
}

.phase-selector {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.4rem;
}

.phase-radio {
  display: block;
  cursor: pointer;
}

.phase-radio input {
  display: none;
}

.phase-radio span {
  display: block;
  text-align: center;
  font-size: 0.75rem;
  background-color: #172433;
  border: 1px solid rgba(223, 227, 229, 0.1);
  padding: 0.5rem 0.2rem;
  border-radius: 6px;
  color: var(--color-gray-light);
}

.phase-radio input:checked+span {
  background-color: var(--color-blue);
  color: #070e16;
  font-weight: 700;
}

.file-dropzone {
  border: 2px dashed rgba(68, 154, 213, 0.35);
  background-color: #0a1017;
  border-radius: 8px;
  padding: 1.25rem;
  text-align: center;
  position: relative;
  cursor: pointer;
}

.file-input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.dropzone-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  pointer-events: none;
}

.dropzone-text {
  font-size: 0.85rem;
  color: var(--color-white);
}

.dropzone-hint {
  font-size: 0.7rem;
  color: var(--color-gray);
}

.file-list {
  margin-top: 0.5rem;
  font-size: 0.75rem;
  color: var(--color-blue);
}

.form-feedback {
  margin-top: 1rem;
  font-size: 0.88rem;
  padding: 0.75rem;
  border-radius: 6px;
  display: none;
}

.form-feedback.success {
  display: block;
  background-color: rgba(34, 197, 94, 0.15);
  border: 1px solid #22c55e;
  color: #4ade80;
}

.form-feedback.error {
  display: block;
  background-color: rgba(239, 68, 68, 0.15);
  border: 1px solid #ef4444;
  color: #f87171;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.main-footer {
  background-color: #06090e;
  border-top: 1px solid rgba(223, 227, 229, 0.08);
  padding-top: 4rem;
  padding-bottom: 2rem;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-desc {
  font-size: 0.85rem;
  color: var(--color-gray);
  margin-top: 1rem;
}

.footer-heading {
  font-size: 0.95rem;
  color: var(--color-pure-white);
  margin-bottom: 1.1rem;
  font-family: var(--font-primary-bold);
  font-weight: 700;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links a {
  font-size: 0.85rem;
  color: #8c98a4;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(223, 227, 229, 0.06);
  padding-top: 1.5rem;
  font-size: 0.78rem;
  color: var(--color-gray);
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom-links {
  display: flex;
  gap: 1.5rem;
}

/* ==========================================================================
   RESPONSIVIDAD Y OPTIMIZACIONES PARA MÓVILES
   ========================================================================== */
@media (max-width: 1024px) {

  .hero-container,
  .leed-grid,
  .calculator-wrapper {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .calc-results-panel {
    position: static;
  }

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

@media (max-width: 768px) {

  /* Espaciado del cuerpo para la barra de navegación inferior */
  body {
    padding-bottom: calc(var(--mobile-bottom-nav-height) + 10px + env(safe-area-inset-bottom));
  }

  /* Ocultar elementos desktop / tablet */
  .desktop-nav,
  .d-none-mobile,
  .d-none-tablet,
  .floating-whatsapp-widget {
    display: none !important;
  }

  /* Mostrar elementos móviles */
  .mobile-toggle {
    display: flex;
  }

  .mobile-bottom-nav {
    display: flex;
  }

  .btn-mobile-full {
    width: 100%;
  }

  .section-padding {
    padding-top: 3.5rem;
    padding-bottom: 3.5rem;
  }

  .section-header {
    margin-bottom: 2.2rem;
  }

  .section-title {
    font-size: 1.95rem;
  }

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

  /* Header Móvil */
  .nav-container {
    height: 62px;
  }

  .brand-name {
    font-size: 1.05rem;
  }

  .brand-tagline {
    font-size: 0.58rem;
  }

  /* Hero Móvil */
  .hero-section {
    padding: 2.5rem 0 2rem 0;
    min-height: auto;
  }

  .hero-title {
    font-size: 2.05rem;
    line-height: 1.18;
  }

  .hero-description {
    font-size: 0.98rem;
    margin-bottom: 1.5rem;
  }

  .hero-cta-row {
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 2rem;
  }

  .hero-metrics-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }

  .blueprint-image-box {
    height: 240px;
  }

  /* Visor 3D Móvil */
  .three-canvas-container {
    height: 380px;
  }

  .three-toolbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .three-mode-buttons {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
    flex-wrap: nowrap;
  }

  .three-btn {
    flex-shrink: 0;
    font-size: 0.75rem;
    padding: 0.4rem 0.7rem;
  }

  /* Grids Móviles */
  .services-grid,
  .projects-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

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

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

  .leed-kpis-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 1.8rem;
  }

  /* Modal como Bottom Sheet en Móviles */
  .modal-backdrop {
    align-items: flex-end;
    padding: 0;
  }

  .modal-window {
    border-radius: 20px 20px 0 0;
    max-height: 85vh;
    border-bottom: none;
    transform: translateY(100%);
  }

  .modal-backdrop.open .modal-window {
    transform: translateY(0);
  }

  .modal-drag-handle {
    display: block;
  }

  .modal-project-view,
  .modal-brand-content,
  .calc-params-panel,
  .calc-results-panel,
  .contact-form-panel {
    padding: 1.4rem;
  }

  .modal-proj-hero {
    height: 200px;
  }

  .modal-proj-title {
    font-size: 1.4rem;
  }

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

  .quote-main-value {
    font-size: 2rem;
  }
}