/* ==========================================================================
   LAYOUT.CSS
   Estructura general: header fijo, secciones, footer, grids de página.
   ========================================================================== */

/* --- Header / navegación fija --- */
.site-header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  height: var(--header-height);
  z-index: var(--z-header);
  background: rgba(6, 11, 22, 0.75);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.site-header.is-scrolled {
  background: rgba(6, 11, 22, 0.95);
  box-shadow: var(--shadow-md);
}

.navbar {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

/* --- Secciones --- */
.section {
  padding-block: var(--space-2xl);
  position: relative;
}

.section--alt {
  background: var(--gradient-surface);
}

.section-header {
  max-width: 680px;
  margin-inline: auto;
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-primary-light);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: var(--fs-xs);
  margin-bottom: var(--space-xs);
}

.section-header h2 {
  margin-bottom: var(--space-sm);
}

.section-header p {
  font-size: var(--fs-md);
}

/* --- Grids reutilizables --- */
.grid {
  display: grid;
  gap: var(--space-md);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

/* --- Bloque texto + visual (Nosotros, servicios detallados) --- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.split--reverse .split__visual {
  order: 2;
}

/* --- Footer --- */
.site-footer {
  background: #030710;
  border-top: 1px solid var(--color-border);
  padding-block-start: var(--space-2xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: var(--space-xl);
  padding-bottom: var(--space-xl);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-md);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
}

.footer-bottom p {
  font-size: var(--fs-xs);
}