/* ============================================================
   ISONDA — layout.css
   Estructura macro: nav, contenedor, secciones, grid, footer.
   Sin decoración de superficie (eso vive en components.css).
   ============================================================ */

.canvas-fondo {
  position: fixed;
  inset: 0;
  z-index: -2;
  background: var(--tierra);
}

#escena-3d {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.vignette {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: radial-gradient(ellipse 75% 65% at 50% 38%, transparent 0%, rgba(26, 19, 13, 0.55) 68%, var(--tierra-profunda) 100%);
}

.barra-progreso {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, var(--arcilla), var(--oxido) 60%, var(--oxido-claro));
  z-index: 200;
  transition: width 0.1s linear;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- Navegación ---------- */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--superficie);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--borde-arcilla);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 0.9rem;
}

.nav__marca {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--fuente-display);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.nav__logo {
  width: 34px;
  height: 34px;
  border-radius: var(--radio-md);
  background: linear-gradient(160deg, var(--oxido), var(--arcilla));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.nav__logo svg {
  width: 18px;
  height: 18px;
  stroke: var(--hueso);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 2rem;
  font-family: var(--fuente-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.nav__links a {
  color: var(--hueso-tenue);
  transition: color var(--dur-rapido) var(--ease-caro);
}

.nav__links a:hover {
  color: var(--oxido-claro);
}

.nav__cta {
  flex-shrink: 0;
}

.nav__toggle {
  display: none;
}

/* ---------- Secciones genéricas ---------- */

main {
  position: relative;
  z-index: 1;
}

.seccion {
  padding-block: clamp(4rem, 9vw, 7.5rem);
  position: relative;
}

.seccion__cabecera {
  max-width: 720px;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--fuente-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--oxido-claro);
  margin-bottom: 1rem;
}

.kicker::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--oxido);
}

.seccion__titulo {
  font-size: clamp(1.9rem, 3.4vw, 2.8rem);
  margin-bottom: 1rem;
}

.seccion__lead {
  color: var(--hueso-tenue);
  font-size: 1.05rem;
  max-width: 640px;
}

/* ---------- Hero ---------- */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 6rem;
  padding-bottom: 4rem;
}

.hero__grid {
  display: grid;
  gap: 2rem;
  width: 100%;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--fuente-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--hueso-tenue);
  border: 1px solid var(--borde-arcilla);
  border-radius: 999px;
  padding: 0.5rem 1rem;
  margin-bottom: 1.75rem;
}

.hero__titulo {
  font-size: clamp(2.4rem, 6vw, 4.4rem);
  max-width: 880px;
  margin-bottom: 1.5rem;
}

.hero__lead {
  font-size: clamp(1.05rem, 1.4vw, 1.2rem);
  color: var(--hueso-tenue);
  max-width: 620px;
  margin-bottom: 2.25rem;
}

.hero__form {
  margin-bottom: 1rem;
}

.hero__meta {
  font-family: var(--fuente-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--hueso-tenue);
  margin-bottom: 3.5rem;
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  border-top: 1px solid var(--borde-arcilla);
  padding-top: 2rem;
}

.scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--fuente-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--hueso-tenue);
}

/* ---------- Grids de contenido ---------- */

.grid-servicios {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.grid-testimonios {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.grid-planes {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  max-width: 820px;
}

/* ---------- Sección split (texto + visual) ---------- */

.split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
}

.split--invertido {
  grid-template-columns: 0.9fr 1.1fr;
}

.split--invertido .split__visual {
  order: -1;
}

.split__visual {
  aspect-ratio: 4 / 5;
  border: 1px solid var(--borde-arcilla);
  border-radius: var(--radio-md);
  background: var(--superficie);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.split__fases {
  display: grid;
  gap: 1.5rem;
  margin-top: 2rem;
}

/* ---------- Proyectos ---------- */

.lista-proyectos {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--borde-arcilla);
}

/* ---------- Lead magnet ---------- */

.lead-magnet__grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

/* ---------- FAQ ---------- */

.faq {
  max-width: 760px;
}

/* ---------- CTA final ---------- */

.cta-final {
  text-align: center;
}

.cta-final__titulo {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  max-width: 760px;
  margin-inline: auto;
  margin-bottom: 1.25rem;
}

.cta-final__lead {
  color: var(--hueso-tenue);
  max-width: 520px;
  margin-inline: auto;
  margin-bottom: 2.5rem;
}

.cta-final__form {
  max-width: 560px;
  margin-inline: auto;
}

/* ---------- Footer ---------- */

.footer {
  border-top: 1px solid var(--borde-arcilla);
  background: var(--superficie-fuerte);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding-top: clamp(3rem, 6vw, 5rem);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 3rem;
}

.footer__marca {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--fuente-display);
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.footer__desc {
  color: var(--hueso-tenue);
  font-size: 0.92rem;
  max-width: 280px;
}

.footer__titulo-col {
  font-family: var(--fuente-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--oxido-claro);
  margin-bottom: 1.1rem;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer__links a {
  color: var(--hueso-tenue);
  font-size: 0.92rem;
  transition: color var(--dur-rapido) var(--ease-caro);
}

.footer__links a:hover {
  color: var(--oxido-claro);
}

.footer__barra {
  border-top: 1px solid var(--borde-arcilla);
  padding-block: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--fuente-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--hueso-tenue);
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 900px) {
  .nav__links {
    display: none;
  }

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

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

  .grid-planes {
    grid-template-columns: 1fr;
    max-width: 480px;
  }

  .split,
  .split--invertido {
    grid-template-columns: 1fr;
  }

  .split--invertido .split__visual {
    order: 0;
  }

  .split__visual {
    aspect-ratio: 16 / 9;
  }

  .lead-magnet__grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 500px) {
  .hero {
    padding-top: 5.5rem;
  }

  .hero__stats {
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
  }

  .grid-servicios,
  .grid-testimonios {
    grid-template-columns: 1fr;
  }

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

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