/* Nav compartido — referencia: index.html */
:root {
  --nav-h: 92px;
  --nav-height: var(--nav-h);
  --nav-max: 1180px;
  --nav-yellow: #facb22;
  --nav-white: #ffffff;
  --nav-ease: 220ms ease;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  width: 100%;
  height: 6rem;
  display: flex;
  align-items: center;
  color: var(--nav-white);
  background: linear-gradient(
    180deg,
    rgba(8, 12, 12, 0.72),
    rgba(8, 12, 12, 0)
  );
  transition:
    background var(--nav-ease),
    box-shadow var(--nav-ease),
    backdrop-filter var(--nav-ease);
}

.site-header.is-scrolled,
.site-header.menu-open {
  background: rgba(6, 23, 18, 0.88);
  backdrop-filter: blur(16px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.16);
}

.nav {
  width: min(100% - clamp(24px, 7vw, 96px), var(--nav-max));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 72px;
}

.brand img {
  width: 40px;
}

.brand__fallback {
  display: none;
  width: 56px;
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid currentColor;
  border-radius: 50%;
  font-size: 0.66rem;
  font-weight: 800;
  line-height: 1;
  text-align: center;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: clamp(1.1rem, 2.4vw, 2.35rem);
  padding: 0;
  margin: 0;
  list-style: none;
}

.nav__link {
  position: relative;
  display: inline-flex;
  padding-block: 0.5rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.055em;
  text-transform: uppercase;
  opacity: 0.9;
  transition:
    color var(--nav-ease),
    opacity var(--nav-ease);
}

.nav__link:hover,
.nav__link.is-active {
  opacity: 1;
  color: var(--nav-yellow);
}

.nav__link.is-active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.18rem;
  height: 2px;
  border-radius: 99px;
  background: currentColor;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border: 1px solid currentColor;
  border-radius: 50%;
  color: currentColor;
}

.menu-toggle span,
.menu-toggle span::before,
.menu-toggle span::after {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 99px;
  background: currentColor;
  transition:
    transform var(--nav-ease),
    top var(--nav-ease),
    background var(--nav-ease);
}

.menu-toggle span {
  position: relative;
}

.menu-toggle span::before,
.menu-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
}

.menu-toggle span::before {
  top: -6px;
}

.menu-toggle span::after {
  top: 6px;
}

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

.menu-toggle[aria-expanded="true"] span::before {
  top: 0;
  transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span::after {
  top: 0;
  transform: rotate(-45deg);
}

@media (max-width: 860px) {
  .menu-toggle {
    display: inline-flex;
  }

  .nav__links {
    position: fixed;
    top: var(--nav-h);
    left: 16px;
    right: 16px;
    display: grid;
    gap: 0;
    padding: 1rem;
    color: var(--nav-white);
    background: rgba(5, 24, 15, 0.94);
    backdrop-filter: blur(18px);
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 24px;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.24);
    transform: translateY(-16px);
    opacity: 0;
    pointer-events: none;
    transition:
      opacity var(--nav-ease),
      transform var(--nav-ease);
  }

  .nav__links.is-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .nav__link {
    width: 100%;
    padding: 1rem;
    border-radius: 14px;
  }

  .nav__link:hover,
  .nav__link.is-active {
    background: rgba(255, 255, 255, 0.08);
  }

  .nav__link.is-active::after {
    display: none;
  }
}

@media (max-width: 640px) {
  :root {
    --nav-h: 82px;
  }

  .brand img {
    width: 68px;
  }
}