/* ============================================================
   GRULLA ESTUDIO — Header
   ============================================================ */


/* ------------------------------------------------------------
   Contenedor principal
   ------------------------------------------------------------ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);

  /* Estado inicial: transparente sobre el hero oscuro */
  background-color: transparent;
  transition:
    background-color var(--ease-normal),
    backdrop-filter var(--ease-normal),
    -webkit-backdrop-filter var(--ease-normal),
    box-shadow var(--ease-normal);
}

/* Estado: con scroll */
.site-header.scrolled {
  background-color: rgba(18, 18, 18, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.07);
}

/* Estado: menú mobile abierto */
.site-header.menu-open {
  background-color: var(--color-black);
}


/* ------------------------------------------------------------
   Inner: flex row
   ------------------------------------------------------------ */

.header__inner {
  display: flex;
  align-items: center;
  height: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
  gap: var(--sp-8);
}


/* ------------------------------------------------------------
   Logo
   ------------------------------------------------------------ */

.header__logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  border-radius: var(--radius-sm);
  transition: opacity var(--ease-fast);
}

.header__logo:hover {
  opacity: 0.8;
}

.header__logo-img {
  height: 26px;
  width: auto;
}


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

.header__nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: clamp(var(--sp-5), 3vw, var(--sp-10));
}

.header__nav-link {
  position: relative;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.72);
  padding-block: var(--sp-2);
  letter-spacing: 0.01em;
  transition: color var(--ease-fast);

  /* Subrayado animado */
  &::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1.5px;
    background-color: var(--color-lime);
    border-radius: 1px;
    transition: width var(--ease-normal);
  }
}

.header__nav-link:hover {
  color: var(--color-white);
}

.header__nav-link:hover::after {
  width: 100%;
}

/* Link activo */
.header__nav-link[aria-current="page"] {
  color: var(--color-white);
}

.header__nav-link[aria-current="page"]::after {
  width: 100%;
}


/* ------------------------------------------------------------
   CTA del header
   ------------------------------------------------------------ */

.header__cta {
  flex-shrink: 0;
  font-size: 0.8125rem;
  padding: 0.6rem 1.25rem;
}


/* ------------------------------------------------------------
   Burger (visible solo en mobile/tablet)
   ------------------------------------------------------------ */

.header__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: var(--sp-2);
  margin-left: auto;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  transition: background-color var(--ease-fast);
}

.header__burger:hover {
  background-color: rgba(255, 255, 255, 0.08);
}

.header__burger-bar {
  display: block;
  height: 1.5px;
  width: 22px;
  background-color: var(--color-white);
  border-radius: 1px;
  transition:
    transform var(--ease-normal),
    opacity var(--ease-normal),
    width var(--ease-normal);
  transform-origin: center;
}

/* Animación burger → X */
.site-header.menu-open .header__burger-bar:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.site-header.menu-open .header__burger-bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.site-header.menu-open .header__burger-bar:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}


/* ------------------------------------------------------------
   Menú mobile
   ------------------------------------------------------------ */

.header__mobile-menu {
  position: fixed;
  inset: var(--header-height) 0 0 0;
  z-index: 99;
  background-color: var(--color-black);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: var(--sp-10) var(--container-pad) var(--sp-16);

  /* Cerrado por defecto */
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  pointer-events: none;
  transition:
    opacity var(--ease-normal),
    visibility var(--ease-normal),
    transform var(--ease-normal);
}

.header__mobile-menu.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

/* Separador decorativo superior */
.header__mobile-menu::before {
  content: '';
  position: absolute;
  top: 0;
  left: var(--container-pad);
  right: var(--container-pad);
  height: 1px;
  background-color: rgba(255, 255, 255, 0.08);
}

.mobile-nav__list {
  display: flex;
  flex-direction: column;
  gap: 0;
  width: 100%;
  margin-bottom: var(--sp-6);
}

.mobile-nav__link {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 6vw, 2.25rem);
  font-weight: 700;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1;
  padding-block: 0.55rem;
  letter-spacing: -0.02em;
  transition:
    color var(--ease-fast),
    transform var(--ease-fast);
}

.mobile-nav__link:hover {
  color: var(--color-white);
  transform: translateX(4px);
}

.mobile-nav__cta {
  align-self: flex-start;
}


/* ------------------------------------------------------------
   Responsive
   ------------------------------------------------------------ */

/* Tablet y mobile: mostrar burger, ocultar nav y CTA de header */
@media (max-width: 1023px) {
  .header__nav,
  .header__cta {
    display: none;
  }

  .header__burger {
    display: flex;
  }
}