/* ==========================================================================
   HEADER — barra fija, logo, navegación, burger y menú móvil
   js/ui/header.js  (clase .is-solid al hacer scroll + body.nav-open)
   ========================================================================== */
.header {
  position: fixed; inset: 0 0 auto; z-index: 100;
  height: var(--header-h);
  transition: background var(--tr), border-color var(--tr), box-shadow var(--tr);
  border-bottom: 1px solid transparent;
}
.header.is-solid {
  background: rgba(255, 255, 255, .88);
  backdrop-filter: blur(14px);
  border-color: var(--linea);
}
.header__inner {
  height: 100%;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}

/* El logo es un componente aparte: css/componentes/logo.css */

/* ---- Navegación de escritorio ---- */
.nav { display: none; }
.nav__link {
  font-size: .8rem; font-weight: 500;
  color: var(--gris);
  transition: color var(--tr);
  position: relative;
}
.nav__link::after {
  content: ""; position: absolute; left: 0; bottom: -6px;
  width: 0; height: 2px; border-radius: 2px;
  background: var(--primario);
  transition: width var(--tr);
}
.nav__link:hover { color: var(--tinta); }
.nav__link:hover::after { width: 100%; }
.nav__link.is-activa { color: var(--primario); font-weight: 600; }

.header__acciones { display: flex; align-items: center; gap: .8rem; }
.header__wa { display: none; }

/* ---- Burger ---- */
.nav-toggle { display: grid; gap: 5px; padding: .5rem; }
.nav-toggle i {
  width: 24px; height: 2px; border-radius: 2px;
  background: var(--tinta);
  transition: transform var(--tr), opacity var(--tr);
}
body.nav-open .nav-toggle i:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.nav-open .nav-toggle i:nth-child(2) { opacity: 0; }
body.nav-open .nav-toggle i:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---- Menú móvil a pantalla completa ---- */
body.nav-open { overflow: hidden; }
.nav-overlay {
  position: fixed; inset: 0; z-index: 95; /* bajo el header: burger y logo visibles */
  background: rgba(247, 245, 241, .97);
  backdrop-filter: blur(16px);
  display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 1.4rem;
  opacity: 0; visibility: hidden;
  transition: opacity var(--tr), visibility var(--tr);
}
body.nav-open .nav-overlay { opacity: 1; visibility: visible; }
.nav-overlay a {
  font-family: var(--f-display); font-weight: 600; font-size: 1.6rem;
  color: var(--tinta);
  opacity: 0; transform: translateY(14px);
  transition: opacity .45s ease var(--delay, 0s), transform .45s ease var(--delay, 0s), color var(--tr);
}
body.nav-open .nav-overlay a { opacity: 1; transform: none; }
.nav-overlay a:hover { color: var(--primario); }

@media (min-width: 768px) {
  .header__wa { display: inline-flex; padding: .6rem 1.3rem; font-size: .72rem; }
}

@media (min-width: 1024px) {
  .nav { display: flex; gap: 2rem; }
  .nav-toggle, .nav-overlay { display: none; }
}