/* ==========================================================================
   ARTESSA — Header / Navegación
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  padding: 1.4rem 0;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background var(--dur-med) var(--ease-soft),
    border-color var(--dur-med) var(--ease-soft),
    padding var(--dur-med) var(--ease-soft);
}

.site-header.is-scrolled {
  /* Sin backdrop-filter: se recalcula en cada frame de scroll sobre un
     elemento fixed y es una de las causas más comunes de scroll
     "trabado". Un fondo sólido casi opaco da el mismo efecto visual. */
  background: rgba(9, 8, 7, 0.97);
  border-bottom-color: rgba(183, 138, 61, 0.18);
  padding: 0.9rem 0;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.brand {
  display: flex;
  flex-direction: column;
  line-height: 1;
  gap: 0.3rem;
}

/* Logo (wordmark "ARTESSA / BY LEO FLORES"). Fondo transparente: se funde
   sobre el header en cualquier tono oscuro, con o sin scroll. */
.brand__logo {
  display: block;
  height: 48px;
  width: auto;
}

@media (max-width: 640px) {
  .brand__logo {
    height: 38px;
  }
}

.site-header.is-scrolled .brand__logo {
  height: 42px;
}

.brand__name {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 1.1rem + 0.6vw, 1.7rem);
  letter-spacing: 0.14em;
  color: var(--color-white-warm);
  text-transform: uppercase;
}

.brand__tagline {
  font-size: 0.6rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-gold-muted);
}

.main-nav {
  display: none;
}

@media (min-width: 980px) {
  .main-nav {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
  }

  .main-nav__list {
    display: flex;
    gap: var(--space-md);
  }

  .main-nav__link {
    position: relative;
    font-size: var(--fs-small);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    padding: 0.4rem 0.1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    transition: color var(--dur-fast) var(--ease-soft);
  }

  .main-nav__link:hover,
  .main-nav__link:focus-visible {
    color: var(--color-white-warm);
  }

  .main-nav__link .star-icon {
    opacity: 0;
    transform: scale(0.5);
    transition: opacity var(--dur-fast) var(--ease-soft), transform var(--dur-fast) var(--ease-soft);
  }

  .main-nav__link[aria-current="page"] {
    color: var(--color-gold-light);
  }

  .main-nav__link[aria-current="page"] .star-icon {
    opacity: 1;
    transform: scale(1);
  }
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.btn-menu {
  display: inline-flex;
  flex-direction: column;
  gap: 5px;
  padding: 10px 8px;
}

@media (min-width: 980px) {
  .btn-menu {
    display: none;
  }
}

.btn-menu span {
  width: 22px;
  height: 1px;
  background: var(--color-ivory);
  transition: transform var(--dur-fast) var(--ease-soft), opacity var(--dur-fast) var(--ease-soft);
}

.btn-menu[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.btn-menu[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.btn-menu[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ---------- Menú móvil a pantalla completa ---------- */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  background: var(--color-black-ceremonial);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 2rem 1.6rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-12px);
  transition: opacity var(--dur-med) var(--ease-soft),
    visibility var(--dur-med), transform var(--dur-med) var(--ease-soft);
}

.mobile-nav.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mobile-nav__close {
  position: absolute;
  top: 1.5rem;
  right: 1.6rem;
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gold-light);
  padding: 0.6rem 1rem;
}

/* Logo arriba-izquierda del menú a pantalla completa (misma posición que
   en el header), con el botón "Cerrar" a la derecha. */
.mobile-nav__logo {
  position: absolute;
  top: 1.7rem;
  left: 1.6rem;
  height: 34px;
  width: auto;
}

.mobile-nav__list {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.mobile-nav__link {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 1.4rem + 3vw, 2.8rem);
  color: var(--color-ivory);
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
}

.mobile-nav__link[aria-current="page"] {
  color: var(--color-gold-light);
}

.mobile-nav__foot {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: var(--border-hairline);
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.mobile-nav__foot a {
  font-size: var(--fs-small);
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
}