/* ============================================================
   HEADER — adaptación a la maqueta
   ============================================================ */

.site-header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 100;
  height: var(--header-h);

  display: flex;
  align-items: center;

  background: rgba(17, 17, 15, 0.92);
  backdrop-filter: blur(10px);

  border-bottom: 1px solid transparent;

  transition:
    border-color .25s ease,
    box-shadow .25s ease,
    background-color .25s ease;
}

.site-header.is-scrolled {
  border-color: var(--line-navy);
  box-shadow: 0 8px 24px -18px rgba(0, 0, 0, 0.6);
}

.site-header__inner {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;

  padding-inline: clamp(1.25rem, 4vw, 2.5rem);

  display: flex;
  align-items: center;
  justify-content: space-between;

  gap: 1.5rem;
}


/* ============================================================
   LOGO
   ============================================================ */

.site-header__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.site-header__logo img {
  height: 95px;
  width: auto;
  display: block;
}


/* ============================================================
   NAVEGACIÓN DESKTOP
   ============================================================ */

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(1.1rem, 2vw, 2rem);
  margin-inline: auto;
}

.site-nav a {
  font-family: var(--font-body);
  font-size: 1.20rem;
  font-weight: 600;
  color: var(--paper-ink);

  position: relative;
  padding-block: 0.4rem;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;

  height: 2px;

  background: var(--gold);

  transform: scaleX(0);
  transform-origin: left;

  transition: transform .2s ease;
}

.site-nav a:hover::after {
  transform: scaleX(1);
}


/* ============================================================
   CTA
   ============================================================ */

.site-header__cta {
  flex-shrink: 0;
}


/* ============================================================
   HAMBURGUESA
   ============================================================ */

.nav-toggle {
  display: none;

  width: 40px;
  height: 40px;

  padding: 0;

  position: relative;

  background: transparent;
  border: 1px solid var(--line-navy);
  border-radius: 10px;

  align-items: center;
  justify-content: center;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";

  position: absolute;

  width: 18px;
  height: 2px;

  left: 50%;

  background: var(--paper-ink);

  transition:
    transform .25s ease,
    opacity .25s ease;
}

.nav-toggle span {
  top: 50%;
  transform: translate(-50%, -50%);
}

.nav-toggle span::before {
  top: -7px;
  left: 0;
}

.nav-toggle span::after {
  top: 7px;
  left: 0;
}


/* Hamburguesa → X cuando se abre */

.nav-toggle[aria-expanded="true"] span {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] span::before {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span::after {
  transform: translateY(-7px) rotate(-45deg);
}


/* ============================================================
   MOBILE
   ============================================================ */

@media (max-width: 860px) {

  .nav-toggle {
    display: flex;
    order: 3;
    flex-shrink: 0;
  }

  .site-nav {
    position: fixed;

    top: var(--header-h);
    left: 0;
    right: 0;

    background: var(--bg-navy);

    flex-direction: column;
    align-items: flex-start;

    gap: 0;

    padding: 0.5rem clamp(1.25rem, 4vw, 2.5rem) 1.5rem;

    border-bottom: 1px solid var(--line-navy);

    transform: translateY(-8px);

    opacity: 0;
    pointer-events: none;

    transition:
      opacity .2s ease,
      transform .2s ease;
  }

  .site-nav.is-open {
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }

  .site-nav a {
    width: 100%;
    padding-block: 0.85rem;

    border-bottom: 1px solid var(--line-navy);
  }

  .site-nav a:last-child {
    border-bottom: none;
  }

  .site-header__cta {
    order: 2;
  }

  .site-header__cta .btn {
    padding: 0.65rem 1rem;
    font-size: 0.85rem;
  }
}