:root {
  --teal: #4BC8BE;
  --teal-dark: #2a9e94;
  --dark: #1c1c1c;
  --dark2: #232323;
  --dark3: #2a2a2a;
  --dark4: #333333;
  --light: #f0ede8;
  --white: #ffffff;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { background: var(--dark); color: var(--light); font-family: 'Barlow', sans-serif; font-weight: 300; overflow-x: hidden; }

/* NAV */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.8rem 4rem;
  background: rgba(28,28,28,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(75,200,190,0.12);
}
.nav-logo { display: flex; align-items: center; gap: 0.7rem; text-decoration: none; }
.logo-lockup { display: flex; align-items: center; gap: 0.7rem; }
.logo-mark { width: auto; flex-shrink: 0; }
.logo-bars { width: 4px; align-self: stretch; border-left: 2px solid rgba(255,255,255,0.92); border-right: 2px solid rgba(255,255,255,0.92); margin: 2px 0; }
.logo-words { display: flex; flex-direction: column; line-height: 1; }
.logo-title { font-family: 'Archivo', sans-serif; font-weight: 700; color: #fff; white-space: nowrap; letter-spacing: 0.02em; }
.logo-tag { font-family: 'Archivo', sans-serif; font-weight: 500; color: var(--teal); white-space: nowrap; }
.nav-logo .logo-mark { height: 40px; }
.nav-logo .logo-title { font-size: 1.18rem; letter-spacing: 0.01em; }
.nav-logo .logo-tag { font-size: 0.5rem; letter-spacing: 0.32em; margin-top: 4px; }
.nav-links { display: flex; gap: 2.5rem; list-style: none; }
.nav-links a { color: rgba(240,237,232,0.7); text-decoration: none; font-size: 0.78rem; letter-spacing: 0.15em; text-transform: uppercase; font-weight: 400; transition: color 0.3s; }
.nav-links a:hover { color: var(--teal); }
.nav-cta { background: transparent; border: 1px solid var(--teal); color: var(--teal); padding: 0.5rem 1.4rem; font-size: 0.72rem; letter-spacing: 0.15em; text-transform: uppercase; cursor: pointer; font-family: 'Barlow', sans-serif; transition: all 0.3s; text-decoration: none; }
.nav-cta:hover { background: var(--teal); color: var(--dark); }

/* NAV SUBMENU */
.nav-links { align-self: stretch; }
.nav-links > li { display: flex; align-items: center; }
.nav-links .has-submenu { position: relative; }
.nav-links .has-submenu > a::after { content: '▾'; font-size: 0.6em; margin-left: 0.4em; opacity: 0.7; }
.nav-links .submenu { position: absolute; top: calc(100% + 0.8rem); left: 50%; transform: translateX(-50%) translateY(8px); min-width: 190px; list-style: none; background: var(--dark2); border: 1px solid rgba(75,200,190,0.18); padding: 0.35rem 0; opacity: 0; visibility: hidden; transition: opacity 0.25s, transform 0.25s; z-index: 200; box-shadow: 0 16px 40px rgba(0,0,0,0.35); }
.nav-links .has-submenu::after { content: ''; position: absolute; top: 100%; left: 0; right: 0; height: 0.9rem; }
.nav-links .has-submenu:hover .submenu { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.nav-links .submenu li { display: block; }
.nav-links .submenu a { display: block; padding: 0.55rem 1rem; font-size: 0.62rem; letter-spacing: 0.06em; text-transform: uppercase; white-space: nowrap; color: rgba(240,237,232,0.72); }
.nav-links .submenu a:hover { color: var(--teal); background: rgba(75,200,190,0.07); }
.nav-links .submenu a.current { color: var(--teal); background: rgba(75,200,190,0.06); }
.nav-toggle { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 44px; height: 40px; padding: 0 9px; background: transparent; border: 1px solid rgba(75,200,190,0.4); border-radius: 4px; cursor: pointer; }
.nav-toggle span { display: block; width: 100%; height: 2px; background: var(--teal); transition: transform 0.3s, opacity 0.3s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.section-label { display: flex; align-items: center; gap: 0.8rem; margin-bottom: 1.2rem; }
.section-label-line { width: 30px; height: 1px; background: var(--teal); }
.section-label span { font-size: 0.68rem; letter-spacing: 0.3em; text-transform: uppercase; color: var(--teal); font-weight: 500; }

.btn-primary { background: var(--teal); color: var(--dark); padding: 0.85rem 2.2rem; font-size: 0.78rem; letter-spacing: 0.15em; text-transform: uppercase; font-family: 'Barlow', sans-serif; font-weight: 600; border: none; cursor: pointer; text-decoration: none; transition: all 0.3s; display: inline-block; }
.btn-primary:hover { background: var(--teal-dark); }
.btn-ghost { color: rgba(240,237,232,0.7); font-size: 0.78rem; letter-spacing: 0.15em; text-transform: uppercase; text-decoration: none; display: inline-flex; align-items: center; gap: 0.5rem; transition: color 0.3s; }
.btn-ghost:hover { color: var(--teal); }

/* SERVICE HERO */
.svc-hero { position: relative; padding: 9rem 4rem 4rem; background: linear-gradient(135deg, #111 0%, #1c1c1c 50%, #222 100%); border-bottom: 1px solid rgba(75,200,190,0.12); overflow: hidden; }
.svc-hero::before { content: ''; position: absolute; inset: 0; background-image: linear-gradient(rgba(75,200,190,0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(75,200,190,0.04) 1px, transparent 1px); background-size: 60px 60px; }
.svc-hero-inner { position: relative; z-index: 2; max-width: 1100px; margin: 0 auto; }
.svc-back { display: inline-block; font-size: 0.74rem; letter-spacing: 0.15em; text-transform: uppercase; color: rgba(240,237,232,0.55); text-decoration: none; margin-bottom: 2rem; transition: color 0.3s; }
.svc-back:hover { color: var(--teal); }
.svc-num { font-family: 'Cormorant Garamond', serif; font-size: 5rem; font-weight: 700; color: rgba(75,200,190,0.55); line-height: 1; }
.svc-title { font-family: 'Cormorant Garamond', serif; font-size: clamp(2.2rem, 4.5vw, 3.6rem); font-weight: 300; line-height: 1.15; color: var(--white); margin: 0.4rem 0 1.5rem; }
.svc-lead { font-size: 1.08rem; line-height: 1.85; color: rgba(240,237,232,0.75); max-width: 880px; text-align: justify; }

/* HERO con imagen a la par de la descripción */
.svc-hero-split { display: grid; grid-template-columns: 1.5fr 1fr; gap: 2.8rem; align-items: stretch; }
.svc-hero-split .svc-lead { max-width: none; }
/* La imagen se ancla abajo (su borde inferior coincide con el del texto) y
   se extiende hacia arriba, junto al título, sin mover el texto. */
.svc-hero-media { position: relative; }
.svc-hero-media img { position: absolute; left: 0; bottom: 0; width: 100%; height: 480px; object-fit: cover; display: block; border: 1px solid rgba(75,200,190,0.2); }

/* Galería con video destacado: el video ocupa el tamaño de 2x2 imágenes
   y las fotografías se distribuyen alrededor. */
.svc-gallery.svc-gallery--with-video { grid-template-columns: repeat(4, 1fr); align-items: start; }
.svc-gallery--with-video .shot--video { grid-column: span 2; grid-row: span 3; aspect-ratio: 5 / 6; background: #000; }
.svc-gallery--with-video .shot--video video { width: 100%; height: 100%; object-fit: contain; object-position: center; display: block; }

/* Marca de agua con el logo de Méndez Ingeniería sobre las fotografías */
.gallery-watermark .shot::after {
  content: '';
  position: absolute;
  top: 10px; left: 12px;
  width: 48%; max-width: 165px;
  aspect-ratio: 2708 / 922;
  background: url('og-image-nobg.png') no-repeat left center / contain;
  opacity: 0.92;
  pointer-events: none;
  filter: drop-shadow(0 1px 4px rgba(0,0,0,0.55));
  z-index: 2;
}

/* PROCESS */
.svc-process { padding: 5rem 4rem 2rem; max-width: 1180px; margin: 0 auto; }
.svc-section-head { margin-bottom: 3rem; }
.svc-h2 { font-family: 'Cormorant Garamond', serif; font-size: clamp(1.8rem, 3vw, 2.6rem); font-weight: 300; color: var(--white); margin-top: 0.6rem; }
.svc-gallery-note { font-size: 0.92rem; line-height: 1.7; color: rgba(240,237,232,0.6); max-width: 700px; margin-top: 1rem; text-align: justify; }

.step { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; margin-bottom: 3.5rem; }
.step.reverse .step-text { order: 2; }
.step.no-img { display: block; border-left: 2px solid rgba(75,200,190,0.3); padding-left: 1.6rem; margin-bottom: 2.2rem; }
.step-num { font-family: 'Cormorant Garamond', serif; font-size: 2.4rem; font-weight: 700; color: rgba(75,200,190,0.65); line-height: 1; }
.step-text h3 { font-size: 1rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--white); margin: 0.6rem 0 1rem; }
.step-text p { font-size: 1rem; line-height: 1.85; color: rgba(240,237,232,0.72); text-align: justify; }

/* IMAGE SLOT */
.shot { position: relative; aspect-ratio: 4/3; background: var(--dark3); border: 1px solid rgba(75,200,190,0.12); overflow: hidden; }
.shot img { width: 100%; height: 100%; object-fit: cover; display: block; }
.shot.empty { border: 1px dashed rgba(75,200,190,0.35); display: flex; align-items: center; justify-content: center; padding: 1.2rem; }
.shot.empty::after { content: attr(data-label); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(75,200,190,0.5); text-align: center; line-height: 1.7; }
.shot.plano { aspect-ratio: 3/2; background: #ffffff; border-color: rgba(75,200,190,0.2); }
.shot.plano img { object-fit: contain; padding: 0.4rem; background: #ffffff; }

/* GALLERY */
.svc-gallery-section { padding: 2rem 4rem 5rem; max-width: 1180px; margin: 0 auto; }
.svc-gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.svc-gallery:has(.plano) { grid-template-columns: 1fr; max-width: 820px; margin-left: auto; margin-right: auto; }

/* Galería cuadrada: imágenes uniformes para que se vean parejas. */
.svc-gallery.gallery-square { grid-template-columns: repeat(4, 1fr); }
.svc-gallery.gallery-square .shot { aspect-ratio: 1 / 1; }

/* Galería de torres (imágenes alargadas): abajo, una al lado de la otra,
   mostradas completas para que se vea la marca de agua. */
.svc-gallery.gallery-tall { grid-template-columns: repeat(2, 1fr); max-width: 760px; margin: 1.4rem auto 0; align-items: start; }
.svc-gallery.gallery-tall .shot { aspect-ratio: auto; background: var(--dark2); }
.svc-gallery.gallery-tall .shot img { height: auto; object-fit: contain; }

/* Galería cuadrada uniforme (3 columnas). El logo incrustado queda arriba a
   la izquierda, por eso anclamos el recorte arriba para no cortarlo. */
.svc-gallery.gallery-cuadrada { grid-template-columns: repeat(3, 1fr); }
.svc-gallery.gallery-cuadrada .shot { aspect-ratio: 1 / 1; }
.svc-gallery.gallery-cuadrada .shot img { object-position: left top; }

/* CTA */
.svc-cta { padding: 5rem 4rem; text-align: center; background: var(--dark2); border-top: 1px solid rgba(75,200,190,0.12); }
.svc-cta h2 { font-family: 'Cormorant Garamond', serif; font-size: clamp(1.8rem, 3vw, 2.6rem); font-weight: 300; color: var(--white); margin-bottom: 1rem; }
.svc-cta p { font-size: 1rem; color: rgba(240,237,232,0.7); margin-bottom: 2rem; }
.svc-cta-actions { display: flex; gap: 1.2rem; justify-content: center; align-items: center; flex-wrap: wrap; }

/* FOOTER */
footer { padding: 3rem 4rem; border-top: 1px solid rgba(75,200,190,0.1); display: flex; justify-content: space-between; align-items: center; }
.footer-logo { display: flex; align-items: center; gap: 0.6rem; text-decoration: none; }
.footer-logo .logo-mark { height: 34px; }
.footer-logo .logo-title { font-size: 1rem; letter-spacing: 0.01em; }
.footer-logo .logo-tag { font-size: 0.44rem; letter-spacing: 0.3em; margin-top: 3px; }
.footer-copy { font-size: 0.74rem; color: rgba(240,237,232,0.45); letter-spacing: 0.08em; }
.footer-cfia { font-size: 0.72rem; color: rgba(240,237,232,0.45); letter-spacing: 0.1em; }
.footer-cfia span { color: var(--teal); }

@media (max-width: 900px) {
  nav { padding: 0.8rem 1.5rem; }
  .nav-toggle { display: flex; }
  .nav-cta { display: none; }
  .nav-links {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; gap: 0; padding: 0.4rem 0;
    background: var(--dark2); border-top: 1px solid rgba(75,200,190,0.18);
    box-shadow: 0 16px 40px rgba(0,0,0,0.45);
  }
  .nav-links.open { display: flex; }
  .nav-links > li { display: block; width: 100%; }
  .nav-links > li > a { display: block; padding: 0.95rem 1.6rem; font-size: 0.85rem; }
  .nav-links .has-submenu > a::after { display: none; }
  .nav-links .submenu,
  .nav-links .has-submenu:hover .submenu {
    position: static; transform: none !important; opacity: 1; visibility: visible;
    min-width: 0; width: 100%; padding: 0; margin: 0;
    background: rgba(0,0,0,0.25); border: none; box-shadow: none;
  }
  .nav-links .submenu a { padding: 0.6rem 1.6rem 0.6rem 2.6rem; font-size: 0.72rem; white-space: normal; }
  .svc-hero { padding: 7rem 1.5rem 3rem; }
  .svc-process, .svc-gallery-section, .svc-cta { padding-left: 1.5rem; padding-right: 1.5rem; }
  .step { grid-template-columns: 1fr; gap: 1.5rem; margin-bottom: 2.5rem; }
  .step.reverse .step-text { order: 0; }
  .svc-gallery { grid-template-columns: 1fr 1fr; }
  .svc-gallery.gallery-square { grid-template-columns: 1fr 1fr; }
  .svc-gallery.gallery-cuadrada { grid-template-columns: 1fr 1fr; }
  .svc-gallery.svc-gallery--with-video { grid-template-columns: 1fr 1fr; }
  .svc-hero-split { grid-template-columns: 1fr; gap: 1.8rem; }
  .svc-hero-media img { position: static; width: 100%; height: auto; max-height: 360px; }
  .svc-video-section { padding-left: 1.5rem; padding-right: 1.5rem; }
  footer { flex-direction: column; gap: 1rem; text-align: center; padding: 2rem 1.5rem; }
}

/* ============================================================
   ANIMACIONES (páginas de servicios)
   ============================================================ */

/* Navbar que se compacta al hacer scroll */
nav { transition: padding 0.35s ease, background 0.35s ease, box-shadow 0.35s ease; }
nav.nav-scrolled {
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
  box-shadow: 0 8px 30px rgba(0,0,0,0.35);
}
nav .nav-logo img { transition: height 0.35s ease; }
nav.nav-scrolled .nav-logo img { height: 36px !important; }

/* Entrada en cascada del hero (solo cuando hay JS) */
@keyframes svcRise {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}
.js .svc-back { opacity: 0; animation: svcRise 0.8s ease 0.10s forwards; }
.js .svc-title { opacity: 0; animation: svcRise 0.9s ease 0.25s forwards; }
.js .svc-lead { opacity: 0; animation: svcRise 0.9s ease 0.42s forwards; }

/* Reveal al hacer scroll (solo cuando hay JS; si no, todo visible) */
.js .svc-section-head .section-label,
.js .svc-h2,
.js .svc-gallery-note,
.js .svc-cta h2,
.js .svc-cta p,
.js .svc-cta-actions,
.js .svc-gallery .shot {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.8s cubic-bezier(.22,.61,.36,1), transform 0.8s cubic-bezier(.22,.61,.36,1);
}
.is-visible { opacity: 1 !important; transform: none !important; }

/* Galería: leve zoom de la imagen al pasar el mouse */
.shot img { transition: transform 0.6s ease; }
.shot:hover img { transform: scale(1.07); }

/* Subrayado animado que crece bajo los títulos */
.svc-h2::after,
.svc-cta h2::after {
  content: '';
  display: block;
  width: 0;
  height: 2px;
  margin-top: 0.9rem;
  background: var(--teal);
  transition: width 0.9s ease 0.2s;
}
.svc-cta h2::after { margin-left: auto; margin-right: auto; }
.svc-h2.is-visible::after,
.svc-cta h2.is-visible::after { width: 64px; }

/* Respeta a quienes prefieren menos movimiento */
@media (prefers-reduced-motion: reduce) {
  .js .svc-back, .js .svc-title, .js .svc-lead { animation: none !important; opacity: 1 !important; }
  .js .svc-section-head .section-label,
  .js .svc-h2,
  .js .svc-gallery-note,
  .js .svc-cta h2,
  .js .svc-cta p,
  .js .svc-cta-actions,
  .js .svc-gallery .shot { opacity: 1 !important; transform: none !important; transition: none !important; }
  .shot img { transition: none !important; }
  .svc-h2::after, .svc-cta h2::after { transition: none !important; }
}