/* ============================================
   EPA ARQUITECTURA — Design System v2
   Eduardo Poblete Aedo
   ============================================ */

/* ---- Variables ---- */
:root {
  --slate:      #2C3E50;
  --slate-deep: #1e2d3d;
  --off-white:  #F5F5F0;
  --cream:      #F0EDE6;
  --red:        #C0392B;
  --red-dark:   #a93226;
  --white:      #FFFFFF;
  --gray-100:   #E8E8E3;
  --gray-200:   #D0D0CA;
  --gray-400:   #9A9A92;
  --gray-600:   #52524E;
  --nav-h:      72px;

  /* Tipografía premium — Cormorant para display, Inter para body */
  --font-serif: 'Cormorant Garamond', 'Playfair Display', Georgia, serif;
  --font-sans:  'Inter', system-ui, -apple-system, sans-serif;
  --ease:       cubic-bezier(0.16, 1, 0.3, 1);
  --ease-back:  cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  background: var(--off-white);
  color: var(--slate);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ============================================================
   LOADER
   ============================================================ */
#loader {
  position: fixed; inset: 0; z-index: 9999;
  background: var(--slate);
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.6s var(--ease), visibility 0.6s;
}
#loader.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.loader-logo {
  animation: pulse 1.8s ease-in-out infinite;
  background: var(--off-white);
  border-radius: 6px;
  padding: 1.25rem 2rem;
  box-shadow: 0 8px 40px rgba(0,0,0,0.3);
}
.loader-logo img {
  width: 160px;
  height: auto;
  display: block;
}
@keyframes pulse { 0%,100%{opacity:0.6} 50%{opacity:1} }

/* ============================================================
   NAVIGATION
   ============================================================ */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  padding: 0 3rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  transition: background 0.4s, box-shadow 0.4s, height 0.4s;
}

nav.scrolled {
  height: 62px;
  background: rgba(245,245,240,0.97);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 rgba(44,62,80,0.10);
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
  transition: opacity 0.3s;
}
.nav-logo:hover { opacity: 0.85; }

.nav-logo-img-wrap {
  background: rgba(245,245,240,0.96);
  border-radius: 3px;
  padding: 5px 10px;
  display: flex;
  align-items: center;
  box-shadow: 0 1px 16px rgba(0,0,0,0.22), 0 0 0 1px rgba(255,255,255,0.08);
  transition: background 0.4s, box-shadow 0.4s, padding 0.4s, border-radius 0.4s;
}
nav.scrolled .nav-logo-img-wrap {
  background: transparent;
  box-shadow: none;
  padding: 0;
  border-radius: 0;
}
.nav-logo img {
  height: 34px;
  width: auto;
  display: block;
  transition: height 0.4s;
}
nav.scrolled .nav-logo img { height: 30px; }
.nav-logo-text {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--off-white);
  letter-spacing: 0.06em;
  transition: color 0.4s;
  display: none;
}
.nav-logo-text.visible { display: block; }
nav.scrolled .nav-logo-text { color: var(--slate); }

/* Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
  margin: 0;
}
.nav-links a {
  font-size: 0.73rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(245,245,240,0.85);
  white-space: nowrap;
  position: relative;
  transition: color 0.3s;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 1px;
  background: var(--red);
  transition: width 0.3s var(--ease);
}
.nav-links a:hover { color: var(--white); }
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

nav.scrolled .nav-links a { color: var(--gray-600); }
nav.scrolled .nav-links a:hover { color: var(--slate); }

/* Portal link */
.nav-portal {
  font-size: 0.67rem !important;
  color: rgba(245,245,240,0.50) !important;
  border: 1px solid rgba(245,245,240,0.22) !important;
  padding: 0.35rem 0.75rem;
  border-radius: 2px;
  transition: all 0.3s !important;
}
.nav-portal:hover {
  color: rgba(245,245,240,0.85) !important;
  border-color: rgba(245,245,240,0.45) !important;
}
.nav-portal::after { display: none !important; }
nav.scrolled .nav-portal {
  color: var(--gray-400) !important;
  border-color: var(--gray-200) !important;
}
nav.scrolled .nav-portal:hover {
  color: var(--slate) !important;
  border-color: var(--slate) !important;
}

/* CTA */
.nav-cta {
  font-size: 0.72rem !important;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--white) !important;
  background: var(--red);
  padding: 0.55rem 1.3rem;
  border-radius: 2px;
  white-space: nowrap;
  flex-shrink: 0;
  transition: background 0.3s, transform 0.2s !important;
}
.nav-cta:hover { background: var(--red-dark) !important; transform: translateY(-1px); }
.nav-cta::after { display: none !important; }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  flex-shrink: 0;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 1.5px;
  background: var(--off-white);
  transition: transform 0.3s, opacity 0.3s, background 0.4s;
}
nav.scrolled .nav-toggle span { background: var(--slate); }

/* ============================================================
   HERO
   ============================================================ */
#hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 640px;
  overflow: hidden;
  display: flex;
  /* center: el contenido siempre queda bien posicionado sin importar el alto de pantalla */
  align-items: center;
}

/* Slides */
.hero-slides { position: absolute; inset: 0; }
.hero-slide {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transform: scale(1.04);
  transition: opacity 1.2s var(--ease), transform 6s linear;
}
.hero-slide.active { opacity: 1; transform: scale(1); }

/* Overlay oscuro sobre la imagen — uniforme para texto centrado */
.hero-slide::after {
  content: '';
  position: absolute; inset: 0;
  background: rgba(10,18,26,0.55);
}

/* Placeholders arquitectónicos — patrón de grilla cuando no hay fotos */
.hero-slide:nth-child(1) {
  background-color: #1a2634;
  background-image:
    linear-gradient(rgba(192,57,43,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(192,57,43,0.06) 1px, transparent 1px),
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 100px 100px, 100px 100px, 20px 20px, 20px 20px;
}
.hero-slide:nth-child(2) {
  background-color: #1b2a38;
  background-image:
    repeating-linear-gradient(
      -45deg,
      transparent,
      transparent 40px,
      rgba(192,57,43,0.04) 40px,
      rgba(192,57,43,0.04) 41px
    ),
    repeating-linear-gradient(
      45deg,
      transparent,
      transparent 40px,
      rgba(255,255,255,0.02) 40px,
      rgba(255,255,255,0.02) 41px
    );
}
.hero-slide:nth-child(3) {
  background-color: #1c2b3c;
  background-image:
    radial-gradient(circle at 20% 80%, rgba(192,57,43,0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255,255,255,0.04) 0%, transparent 50%),
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: auto, auto, 60px 60px, 60px 60px;
}

/* Contenido del hero */
.hero-content {
  position: relative;
  z-index: 2;
  /* padding-top = nav-h + margen extra para nunca superponerse */
  padding: calc(var(--nav-h) + 3rem) 4rem 5rem;
  max-width: 860px;
  width: 100%;
}

.hero-label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 1.25rem;

  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s 0.3s var(--ease), transform 0.7s 0.3s var(--ease);
}
.hero-label::before {
  content: '';
  display: block;
  width: 1.75rem; height: 1px;
  background: var(--red);
  flex-shrink: 0;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.6rem, 4.5vw, 4.2rem);
  font-weight: 300;
  color: #fff;
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin-bottom: 1.5rem;
  text-shadow: 0 2px 40px rgba(0,0,0,0.3);

  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s 0.5s var(--ease), transform 0.8s 0.5s var(--ease);
}
.hero-title em {
  font-style: italic;
  font-weight: 300;
  color: rgba(255,255,255,0.9);
}
.hero-title strong {
  font-weight: 600;
  color: #fff;
}

.hero-desc {
  font-size: 0.95rem;
  font-weight: 300;
  color: rgba(255,255,255,0.85);
  max-width: 500px;
  line-height: 1.75;
  margin-bottom: 2rem;

  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s 0.7s var(--ease), transform 0.7s 0.7s var(--ease);
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;

  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s 0.9s var(--ease), transform 0.7s 0.9s var(--ease);
}

/* Animar cuando body.loaded */
body.loaded .hero-label,
body.loaded .hero-title,
body.loaded .hero-desc,
body.loaded .hero-actions {
  opacity: 1;
  transform: translateY(0);
}

/* Botones — diseño premium */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.75rem;
  background: var(--red);
  color: var(--white);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border-radius: 1px;
  position: relative;
  overflow: hidden;
  transition: background 0.4s, transform 0.2s, box-shadow 0.3s;
  box-shadow: 0 4px 20px rgba(192,57,43,0.25);
}
.btn-primary::before {
  content: '';
  position: absolute; inset: 0;
  background: rgba(255,255,255,0.08);
  transform: translateX(-100%);
  transition: transform 0.4s var(--ease);
}
.btn-primary:hover::before { transform: translateX(0); }
.btn-primary:hover {
  background: var(--red-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(192,57,43,0.35);
}
.btn-primary svg { transition: transform 0.3s var(--ease); }
.btn-primary:hover svg { transform: translateX(3px); }

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.75rem;
  border: 1px solid rgba(245,245,240,0.35);
  color: var(--off-white);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border-radius: 1px;
  backdrop-filter: blur(4px);
  transition: border-color 0.3s, background 0.3s, transform 0.2s;
}
.btn-outline:hover {
  border-color: rgba(245,245,240,0.7);
  background: rgba(245,245,240,0.08);
  transform: translateY(-2px);
}

/* Dots — siempre al fondo */
.hero-counter {
  position: absolute;
  bottom: 2rem; left: 4rem;
  z-index: 3;
}
.hero-dots { display: flex; gap: 8px; }
.hero-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: rgba(245,245,240,0.3);
  cursor: pointer;
  transition: background 0.3s, transform 0.3s;
}
.hero-dot.active { background: var(--red); transform: scale(1.4); }

/* Scroll indicator */
.hero-scroll {
  position: absolute;
  bottom: 2rem; right: 4rem;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: rgba(245,245,240,0.4);
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.hero-scroll-line {
  width: 1px; height: 50px;
  background: linear-gradient(to bottom, rgba(245,245,240,0.4), transparent);
  animation: scrollAnim 2s ease-in-out infinite;
}
@keyframes scrollAnim { 0%,100%{opacity:1} 50%{opacity:0.3} }

/* ============================================================
   SECTIONS — base
   ============================================================ */
section {
  padding: 6rem 4rem;
}

/* Etiqueta de sección */
.section-label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 1rem;
}
.section-label::before {
  content: '';
  display: block;
  width: 1.75rem; height: 1px;
  background: var(--red);
  flex-shrink: 0;
}

/* Número decorativo de sección */
.section-number {
  font-family: var(--font-serif);
  font-size: clamp(4rem, 8vw, 7rem);
  font-weight: 400;
  color: var(--gray-100);
  line-height: 1;
  margin-bottom: 0.5rem;
  user-select: none;
  display: block;
}

/* Título de sección */
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.5vw, 3.2rem);
  font-weight: 300;
  color: var(--slate);
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin-bottom: 1.5rem;
}
.section-title em {
  font-style: italic;
  color: var(--gray-600);
  font-weight: 300;
}
.section-title strong {
  font-weight: 600;
  color: var(--slate);
}

/* ============================================================
   ABOUT
   ============================================================ */
#about {
  background: var(--white);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
  padding: 6rem 4rem;
}
.about-text p {
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--gray-600);
  margin-bottom: 1.25rem;
  font-weight: 300;
}
.about-text p strong { color: var(--slate); font-weight: 600; }

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--gray-100);
}
.stat-number {
  font-family: var(--font-serif);
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--slate);
  line-height: 1;
}
.stat-number span { color: var(--red); }
.stat-label {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-top: 0.4rem;
}

.about-image { position: relative; }
.about-image-main {
  width: 100%;
  aspect-ratio: 4/5;
  background: linear-gradient(135deg, #1e2d3d 0%, var(--slate) 100%);
  border-radius: 2px;
  overflow: hidden;
}
.about-image-main img { width: 100%; height: 100%; object-fit: cover; }
.about-image-accent {
  position: absolute;
  bottom: -2rem; left: -2rem;
  width: 55%; aspect-ratio: 1;
  background: var(--off-white);
  border: 6px solid var(--off-white);
  border-radius: 2px;
  overflow: hidden;
}
.about-image-accent img { width: 100%; height: 100%; object-fit: cover; }

/* ============================================================
   SERVICES
   ============================================================ */
#servicios { background: var(--off-white); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5px;
  margin-top: 3.5rem;
  background: var(--gray-100);
  border: 1.5px solid var(--gray-100);
}
.service-card {
  background: var(--white);
  padding: 2.5rem 2rem;
  position: relative;
  overflow: hidden;
  transition: background 0.5s var(--ease), transform 0.3s var(--ease), box-shadow 0.3s;
  cursor: default;
}
.service-card::before {
  content: '';
  position: absolute; top: 0; left: 0;
  width: 2px; height: 0;
  background: var(--red);
  transition: height 0.5s var(--ease);
}
/* Línea inferior sutil */
.service-card::after {
  content: '';
  position: absolute; bottom: 0; left: 2rem; right: 2rem;
  height: 1px;
  background: var(--gray-100);
  transition: opacity 0.4s;
}
.service-card:hover::before { height: 100%; }
.service-card:hover::after { opacity: 0; }
.service-card:hover {
  background: var(--slate);
  box-shadow: inset 0 0 60px rgba(0,0,0,0.1);
}
.service-card:hover .service-icon,
.service-card:hover .service-title,
.service-card:hover .service-desc,
.service-card:hover .service-list li { color: var(--off-white); }
.service-card:hover .service-list li { border-top-color: rgba(245,245,240,0.1); }

.service-icon {
  font-size: 1.8rem;
  margin-bottom: 1.25rem;
  color: var(--slate);
  transition: color 0.4s;
}
.service-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--slate);
  margin-bottom: 0.85rem;
  transition: color 0.4s;
}
.service-desc {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--gray-600);
  margin-bottom: 1.25rem;
  font-weight: 300;
  transition: color 0.4s;
}
.service-list { list-style: none; }
.service-list li {
  font-size: 0.82rem;
  color: var(--gray-600);
  padding: 0.4rem 0 0.4rem 1rem;
  position: relative;
  border-top: 1px solid var(--gray-100);
  transition: color 0.4s, border-color 0.4s;
}
.service-list li::before {
  content: '';
  position: absolute; left: 0; top: 50%;
  transform: translateY(-50%);
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--red);
}

/* ============================================================
   PORTFOLIO
   ============================================================ */
#portafolio {
  background: var(--slate);
  padding: 6rem 0;
}
#portafolio .section-header {
  padding: 0 4rem;
  margin-bottom: 3rem;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
}
#portafolio .section-label { color: var(--red); }
#portafolio .section-number { color: rgba(245,245,240,0.06); }
#portafolio .section-title { color: var(--off-white); margin-bottom: 0; }

.portfolio-track-wrap {
  overflow: hidden;
  cursor: grab;
  user-select: none;
}
.portfolio-track-wrap:active { cursor: grabbing; }
.portfolio-track {
  display: flex;
  gap: 2px;
  transition: transform 0.5s var(--ease);
}
.portfolio-card {
  flex: 0 0 36vw;
  min-width: 280px;
  aspect-ratio: 3/4;
  position: relative;
  overflow: hidden;
  background: rgba(245,245,240,0.06);
}
.portfolio-card img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.portfolio-card:hover img { transform: scale(1.05); }
.portfolio-card-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(44,62,80,0.9) 0%, transparent 55%);
  opacity: 0;
  transition: opacity 0.4s;
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: 1.75rem;
}
.portfolio-card:hover .portfolio-card-overlay { opacity: 1; }
.portfolio-card-category {
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 0.4rem;
}
.portfolio-card-title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--off-white);
  margin-bottom: 0.25rem;
}
.portfolio-card-location {
  font-size: 0.78rem;
  color: rgba(245,245,240,0.6);
}
.portfolio-placeholder {
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  color: rgba(245,245,240,0.18);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  gap: 1rem;
}
.portfolio-placeholder-icon { font-size: 2.5rem; opacity: 0.25; }

.portfolio-nav {
  padding: 2.5rem 4rem 0;
  display: flex; align-items: center; justify-content: space-between;
}
.portfolio-nav-arrows { display: flex; gap: 0.6rem; }
.portfolio-arrow {
  width: 44px; height: 44px;
  border: 1px solid rgba(245,245,240,0.2);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--off-white);
  transition: border-color 0.3s, background 0.3s;
}
.portfolio-arrow:hover { border-color: var(--red); background: var(--red); }

.portfolio-see-all {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(245,245,240,0.55);
  display: flex; align-items: center; gap: 0.6rem;
  transition: color 0.3s;
}
.portfolio-see-all::after {
  content: '';
  width: 1.75rem; height: 1px;
  background: currentColor;
  transition: width 0.3s;
}
.portfolio-see-all:hover { color: var(--off-white); }
.portfolio-see-all:hover::after { width: 3rem; }

/* ============================================================
   PROCESO
   ============================================================ */
#proceso { background: var(--white); }

.proceso-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 3.5rem;
  position: relative;
}
.proceso-steps::before {
  content: '';
  position: absolute;
  top: 1.8rem; left: 0; right: 0;
  height: 1px;
  background: var(--gray-100);
}
.proceso-step {
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}
.paso-dot {
  width: 3.5rem; height: 3.5rem;
  border-radius: 50%;
  background: var(--off-white);
  border: 2px solid var(--gray-100);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-serif);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--gray-400);
  margin-bottom: 1.75rem;
  transition: background 0.3s, border-color 0.3s, color 0.3s;
}
.proceso-step.active .paso-dot {
  background: var(--red);
  border-color: var(--red);
  color: var(--white);
  box-shadow: 0 0 0 5px rgba(192,57,43,0.12);
}
.paso-title {
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--slate);
  margin-bottom: 0.65rem;
}
.paso-desc {
  font-size: 0.83rem;
  line-height: 1.7;
  color: var(--gray-400);
  font-weight: 300;
}

/* ============================================================
   COBERTURA
   ============================================================ */
#cobertura {
  background: var(--off-white);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
  padding: 6rem 4rem;
}
.cobertura-map {
  background: var(--white);
  border-radius: 4px;
  padding: 2.5rem;
}
.zona-group { margin-bottom: 0; }
.zona-region {
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 0.65rem;
  font-weight: 600;
}
.zona-comunas {
  display: flex; flex-wrap: wrap; gap: 0.4rem;
}
.zona-tag {
  font-size: 0.76rem;
  padding: 0.3rem 0.8rem;
  border: 1px solid var(--gray-100);
  border-radius: 50px;
  color: var(--gray-600);
  transition: border-color 0.3s, color 0.3s, background 0.3s;
}
.zona-tag:hover, .zona-tag.highlight {
  border-color: var(--red);
  color: var(--red);
  background: rgba(192,57,43,0.05);
}
.zona-divider { height: 1px; background: var(--gray-100); margin: 1.25rem 0; }

/* ============================================================
   PUBLICACIONES LINKEDIN
   ============================================================ */
#publicaciones {
  background: var(--white);
  padding: 6rem 4rem;
}
#publicaciones .inner {
  max-width: 1100px;
  margin: 0 auto;
}
#publicaciones .pub-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 3rem;
  flex-wrap: wrap;
  gap: 1.5rem;
}
#publicaciones .pub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

/* ============================================================
   FAQ
   ============================================================ */
#faq {
  background: var(--white);
  padding: 6rem 4rem;
}
#faq .inner { max-width: 780px; margin: 0 auto; }

.faq-item {
  border-bottom: 1px solid var(--gray-100);
}
.faq-item:first-of-type { border-top: 1px solid var(--gray-100); }

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.4rem 0;
  font-size: 0.93rem;
  font-weight: 600;
  color: var(--slate);
  cursor: pointer;
  list-style: none;
  transition: color 0.3s;
}
.faq-question::-webkit-details-marker { display: none; }
.faq-question::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--red);
  flex-shrink: 0;
  transition: transform 0.3s var(--ease);
  line-height: 1;
}
.faq-item[open] .faq-question { color: var(--red); }
.faq-item[open] .faq-question::after { transform: rotate(45deg); }

.faq-answer { padding-bottom: 1.5rem; }
.faq-answer p {
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--gray-600);
  font-weight: 300;
}
.faq-answer p strong { color: var(--slate); font-weight: 600; }

/* ============================================================
   CTA CONTACTO
   ============================================================ */
#contacto-cta {
  background: var(--slate);
  text-align: center;
  padding: 7rem 4rem;
}
#contacto-cta .section-label {
  justify-content: center;
  color: var(--red);
}
#contacto-cta .section-label::before { display: none; }
#contacto-cta .section-title { color: var(--off-white); }
#contacto-cta .section-label::before { display: none; }
#contacto-cta .section-title { color: var(--off-white); text-align: center; }
#contacto-cta p {
  color: rgba(245,245,240,0.6);
  font-size: 1rem;
  font-weight: 300;
  max-width: 500px;
  margin: 0 auto 2.5rem;
  line-height: 1.75;
  text-align: center;
}
.cta-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   CONTACTO
   ============================================================ */
#contacto {
  background: var(--white);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
  padding: 6rem 4rem;
}
.contact-detail {
  display: flex; gap: 1rem; align-items: flex-start;
  margin-bottom: 1.75rem;
}
.contact-icon {
  width: 2.4rem; height: 2.4rem;
  background: var(--off-white);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.95rem;
  flex-shrink: 0;
}
.contact-detail-label {
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: 0.2rem;
}
.contact-detail-value {
  font-size: 0.92rem;
  color: var(--slate);
}

.form-group { margin-bottom: 1.25rem; }
.form-group label {
  display: block;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: 0.4rem;
  font-weight: 500;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1px solid var(--gray-100);
  border-radius: 2px;
  background: var(--off-white);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--slate);
  outline: none;
  transition: border-color 0.3s, box-shadow 0.3s;
  appearance: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--slate);
  box-shadow: 0 0 0 3px rgba(44,62,80,0.06);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  background: var(--slate);
  padding: 4rem;
  border-top: 1px solid rgba(245,245,240,0.05);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}
.footer-brand-logo {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--off-white);
  letter-spacing: 0.05em;
  display: block;
  margin-bottom: 0.85rem;
}
.footer-tagline {
  font-size: 0.83rem;
  color: rgba(245,245,240,0.38);
  line-height: 1.75;
  font-weight: 300;
}
.footer-col-title {
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(245,245,240,0.38);
  margin-bottom: 1.1rem;
}
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 0.55rem; }
.footer-links a {
  font-size: 0.83rem;
  color: rgba(245,245,240,0.55);
  transition: color 0.3s;
}
.footer-links a:hover { color: var(--off-white); }

.footer-social {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.25rem;
}
.footer-social a {
  width: 2rem; height: 2rem;
  border: 1px solid rgba(245,245,240,0.14);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem;
  color: rgba(245,245,240,0.45);
  transition: border-color 0.3s, color 0.3s;
}
.footer-social a:hover {
  border-color: rgba(245,245,240,0.4);
  color: var(--off-white);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 2rem;
  border-top: 1px solid rgba(245,245,240,0.06);
  flex-wrap: wrap;
  gap: 0.75rem;
}
.footer-copy {
  font-size: 0.73rem;
  color: rgba(245,245,240,0.28);
}
.footer-legal { display: flex; gap: 1.75rem; }
.footer-legal a {
  font-size: 0.73rem;
  color: rgba(245,245,240,0.28);
  transition: color 0.3s;
}
.footer-legal a:hover { color: rgba(245,245,240,0.55); }

/* ============================================================
   SCROLL REVEAL
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ============================================================
   RESPONSIVE — Tablet 900px
   ============================================================ */
@media (max-width: 900px) {
  nav { padding: 0 1.5rem; }
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed; inset: 0;
    background: var(--slate);
    flex-direction: column;
    align-items: center; justify-content: center;
    gap: 2rem;
    transform: translateX(100%);
    transition: transform 0.4s var(--ease);
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links a { color: var(--off-white) !important; font-size: 1.1rem; }
  .nav-cta { display: none; }
  .nav-portal { display: none; }

  section { padding: 5rem 1.5rem; }
  #about { grid-template-columns: 1fr; gap: 3rem; padding: 5rem 1.5rem; }
  .about-image { order: -1; }
  .about-image-accent { display: none; }
  .services-grid { grid-template-columns: 1fr; }
  #portafolio { padding: 5rem 0; }
  #portafolio .section-header { padding: 0 1.5rem; flex-direction: column; align-items: flex-start; gap: 1.25rem; }
  .portfolio-nav { padding: 2rem 1.5rem 0; }
  .portfolio-card { flex: 0 0 78vw; }
  .proceso-steps { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .proceso-steps::before { display: none; }
  #cobertura { grid-template-columns: 1fr; gap: 3rem; padding: 5rem 1.5rem; }
  #publicaciones { padding: 5rem 1.5rem; }
  #faq { padding: 5rem 1.5rem; }
  #contacto { grid-template-columns: 1fr; gap: 3rem; padding: 5rem 1.5rem; }
  #contacto-cta { padding: 5rem 1.5rem; }
  footer { padding: 3rem 1.5rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .hero-content { padding: 2rem 1.5rem 5rem; }
  .hero-scroll { display: none; }
  .hero-counter { left: 1.5rem; bottom: 1.5rem; }
  .form-row { grid-template-columns: 1fr; }
}

/* ============================================================
   RESPONSIVE — Mobile 600px
   ============================================================ */
@media (max-width: 600px) {
  .proceso-steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .hero-title { font-size: 2.4rem; }
}