/* ==========================================================================
   Renddi · Cabecera (rd-header) y navegación principal (rd-nav)
   Mobile-first. Menú desplegable < 60rem; barra horizontal ≥ 60rem.
   Con JS es fija y se compacta al hacer scroll (logo grande → pequeño).
   Sin JS (.rd-js ausente) la navegación se muestra siempre.
   Requiere: tokens.css, base.css · JS: js/header.js
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Contenedor de cabecera
   -------------------------------------------------------------------------- */
.rd-header {
  position: sticky;
  top: 0;
  z-index: var(--rd-z-header);
  height: var(--rd-header-h);
}

/* Con JS: fija (no ocupa espacio en el flujo, así compactarla no desplaza
   el contenido). Arranca amplia y se compacta con scroll o menú abierto. */
.rd-js .rd-header {
  position: fixed;
  inset: 0 0 auto;
  height: var(--rd-header-h-top);
  transition: height var(--rd-duration-base) var(--rd-ease-out);
}

.rd-js .rd-header--scrolled,
.rd-js .rd-header--open {
  height: var(--rd-header-h);
}

/* Fondo en pseudo-elemento: backdrop-filter en el propio header crearía
   un bloque contenedor y recortaría el panel fijo del menú móvil */
.rd-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-bottom: 1px solid transparent;
  transition:
    background-color var(--rd-duration-base) ease,
    border-color var(--rd-duration-base) ease;
}

/* Estado tras hacer scroll o con el menú abierto (lo añade header.js) */
.rd-header--scrolled::before,
.rd-header--open::before {
  background-color: rgba(26, 44, 48, 0.88);
  border-bottom-color: var(--rd-border);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.rd-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--rd-space-5);
  height: 100%;
}

/* Sin JS: la cabecera crece para mostrar la navegación completa */
html:not(.rd-js) .rd-header {
  position: relative;
  height: auto;
}

html:not(.rd-js) .rd-header__inner {
  flex-wrap: wrap;
  padding-block: var(--rd-space-3);
}

/* --------------------------------------------------------------------------
   2. Logotipo
   -------------------------------------------------------------------------- */
.rd-header__brand {
  flex-shrink: 0;
  display: block;
  border-radius: var(--rd-radius-s);
}

.rd-header__logo {
  width: auto;
  height: var(--rd-logo-h);
}

/* Logo amplio arriba del todo; se reduce al compactarse la cabecera */
.rd-js .rd-header__logo {
  height: var(--rd-logo-h-top);
  transition: height var(--rd-duration-base) var(--rd-ease-out);
}

.rd-js .rd-header--scrolled .rd-header__logo,
.rd-js .rd-header--open .rd-header__logo {
  height: var(--rd-logo-h);
}

/* --------------------------------------------------------------------------
   3. Botón de menú (solo móvil y con JS)
   -------------------------------------------------------------------------- */
.rd-header__toggle {
  display: none;
}

.rd-js .rd-header__toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--rd-space-3);
  min-height: 2.75rem;
  padding: 0 var(--rd-space-4);
  background: var(--rd-surface);
  border: 1px solid var(--rd-border);
  border-radius: var(--rd-radius-pill);
  font-size: var(--rd-text-s);
  font-weight: var(--rd-weight-medium);
  cursor: pointer;
}

/* Icono: dos barras de píxel que se cruzan al abrir */
.rd-header__toggle-icon {
  position: relative;
  width: 1rem;
  height: 0.625rem;
}

.rd-header__toggle-icon::before,
.rd-header__toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
  transition: transform var(--rd-duration-base) var(--rd-ease-out), top var(--rd-duration-base) var(--rd-ease-out);
}

.rd-header__toggle-icon::before { top: 0; }
.rd-header__toggle-icon::after { top: calc(100% - 2px); }

.rd-header__toggle[aria-expanded="true"] .rd-header__toggle-icon::before {
  top: calc(50% - 1px);
  transform: rotate(45deg);
}

.rd-header__toggle[aria-expanded="true"] .rd-header__toggle-icon::after {
  top: calc(50% - 1px);
  transform: rotate(-45deg);
}

/* --------------------------------------------------------------------------
   4. Navegación · móvil (panel desplegable)
   -------------------------------------------------------------------------- */
.rd-nav {
  display: flex;
  flex-direction: column;
  gap: var(--rd-space-5);
}

.rd-js .rd-nav {
  display: none;
  position: fixed;
  inset: var(--rd-header-h) 0 0 0;
  z-index: var(--rd-z-menu);
  padding: var(--rd-space-6) var(--rd-gutter) var(--rd-space-8);
  background-color: var(--rd-bg-deep);
  overflow-y: auto;
  overscroll-behavior: contain;
}

.rd-js .rd-header--open .rd-nav {
  display: flex;
}

.rd-nav__list {
  display: flex;
  flex-direction: column;
}

.rd-nav__link,
.rd-nav__sub-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 3.5rem;
  padding: 0;
  background: none;
  border: 0;
  border-bottom: 1px solid var(--rd-border);
  color: var(--rd-text);
  font-size: var(--rd-text-l);
  font-weight: var(--rd-weight-medium);
  text-align: left;
  text-decoration: none;
  cursor: pointer;
}

.rd-nav__link:hover,
.rd-nav__sub-toggle:hover {
  color: var(--rd-burnt-orange);
}

.rd-nav__link[aria-current="page"] {
  color: var(--rd-burnt-orange);
}

/* Indicador del submenú: un píxel que gira */
.rd-nav__sub-toggle::after {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: translateY(-25%) rotate(45deg);
  transition: transform var(--rd-duration-base) var(--rd-ease-out);
}

.rd-nav__sub-toggle[aria-expanded="true"]::after {
  transform: translateY(25%) rotate(-135deg);
}

/* Submenú: visible sin JS; con JS se controla con aria-expanded */
.rd-nav__sub {
  padding: var(--rd-space-2) 0 var(--rd-space-3) var(--rd-space-4);
}

.rd-js .rd-nav__sub-toggle[aria-expanded="false"] + .rd-nav__sub {
  display: none;
}

.rd-nav__sub-link {
  display: flex;
  align-items: center;
  min-height: 2.75rem;
  color: var(--rd-text-muted-on-dark);
  font-size: var(--rd-text-m);
  text-decoration: none;
}

.rd-nav__sub-link:hover {
  color: var(--rd-text);
}

.rd-header__cta {
  align-self: flex-start;
}

/* Bloquea el scroll del fondo con el menú abierto (lo añade header.js) */
.rd-menu-open {
  overflow: hidden;
}

/* --------------------------------------------------------------------------
   5. Navegación · escritorio (≥ 60rem)
   -------------------------------------------------------------------------- */
@media (min-width: 60rem) {
  .rd-js .rd-header__toggle {
    display: none;
  }

  .rd-nav,
  .rd-js .rd-nav {
    position: static;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: var(--rd-space-6);
    padding: 0;
    background: none;
    overflow: visible;
  }

  .rd-nav__list {
    flex-direction: row;
    align-items: center;
    gap: var(--rd-space-1);
  }

  .rd-nav__item--has-sub {
    position: relative;
  }

  .rd-nav__link,
  .rd-nav__sub-toggle {
    gap: var(--rd-space-2);
    width: auto;
    min-height: 2.75rem;
    padding: 0 var(--rd-space-3);
    border-bottom: 0;
    font-size: var(--rd-text-s);
  }

  .rd-nav__sub-toggle::after {
    width: 0.375rem;
    height: 0.375rem;
    border-width: 1.5px;
  }

  /* Submenú como desplegable flotante */
  .rd-nav__sub {
    position: absolute;
    top: calc(100% + var(--rd-space-2));
    left: 0;
    min-width: max-content;
    padding: var(--rd-space-2);
    background-color: var(--rd-bg-deep);
    border: 1px solid var(--rd-border);
    border-radius: var(--rd-radius-m);
    box-shadow: 0 20px 40px -20px rgba(0, 0, 0, 0.6);
  }

  /* Sin JS, el submenú se abre con hover y foco */
  html:not(.rd-js) .rd-nav__sub {
    display: none;
  }

  html:not(.rd-js) .rd-nav__item--has-sub:hover .rd-nav__sub,
  html:not(.rd-js) .rd-nav__item--has-sub:focus-within .rd-nav__sub {
    display: block;
  }

  .rd-nav__sub-link {
    padding: 0 var(--rd-space-3);
    border-radius: var(--rd-radius-s);
    font-size: var(--rd-text-s);
    color: var(--rd-text);
    white-space: nowrap;
  }

  .rd-nav__sub-link:hover {
    background-color: var(--rd-surface);
    color: var(--rd-burnt-orange);
  }

  .rd-header__cta {
    align-self: center;
  }

  .rd-menu-open {
    overflow: visible;
  }
}