/* ─── NAV ────────────────────────────────────────────────────────────────── */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--gutter);
  z-index: 100;
  transition: background var(--dur-med) var(--ease),
              box-shadow var(--dur-med) var(--ease),
              transform 0.4s var(--ease);
}

.nav--scrolled {
  background: rgba(242,245,242,0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 rgba(26,28,26,0.07);
}

/* Logo */
.nav__logo {
  display: flex;
  align-items: center;
  height: 72px;
  flex-shrink: 0;
}

.nav__logo svg {
  height: 72px;
  width: auto;
}

/* Links desktop */
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--sp-lg);
}

.nav__link {
  font-size: var(--size-xs);
  font-weight: var(--w-medium);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-dark);
  position: relative;
  padding: 0.35rem 0.75rem;
  border-radius: 3px;
  /* Recuadro amarillo — opacidad controlada por JS al hacer scroll */
  background-color: rgba(240, 210, 50, var(--nav-pill-opacity, 0.72));
  transition: background-color var(--dur-med) var(--ease),
              opacity var(--dur-fast);
}

.nav__link:hover {
  background-color: rgba(240, 210, 50, 0.95);
}

/* CTA */
.nav__cta {
  font-size: var(--size-xs);
  font-weight: var(--w-medium);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.6rem 1.4rem;
  border: 1px solid rgba(26,28,26,0.25);
  color: var(--color-dark);
  transition: background var(--dur-fast), color var(--dur-fast),
              border-color var(--dur-fast);
}

.nav__cta:hover {
  background: var(--color-dark);
  color: var(--color-white);
  border-color: var(--color-dark);
}

/* Botón menú mobile */
.nav__menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.nav__menu-btn span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--color-dark);
  transition: transform var(--dur-fast) var(--ease), opacity var(--dur-fast);
}

/* Overlay mobile */
.nav__mobile {
  position: fixed;
  inset: 0;
  background: var(--color-dark);
  z-index: 99;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--sp-xl) var(--gutter);
  transform: translateX(100%);
  transition: transform var(--dur-slow) var(--ease);
}

.nav__mobile--open { transform: translateX(0); }

.nav__mobile-links { display: flex; flex-direction: column; gap: var(--sp-md); }

.nav__mobile-link {
  font-size: clamp(2.5rem, 10vw, 5rem);
  font-weight: var(--w-thin);
  letter-spacing: -0.03em;
  color: var(--color-bg);
  opacity: 0;
  transform: translateX(40px);
  transition: opacity var(--dur-med) var(--ease), transform var(--dur-med) var(--ease);
  line-height: 1.1;
}

.nav__mobile--open .nav__mobile-link { opacity: 1; transform: translateX(0); }
.nav__mobile--open .nav__mobile-link:nth-child(1) { transition-delay: 0.08s; }
.nav__mobile--open .nav__mobile-link:nth-child(2) { transition-delay: 0.14s; }
.nav__mobile--open .nav__mobile-link:nth-child(3) { transition-delay: 0.20s; }
.nav__mobile--open .nav__mobile-link:nth-child(4) { transition-delay: 0.26s; }

@media (max-width: 860px) {
  .nav__links, .nav__cta { display: none; }
  .nav__menu-btn { display: flex; }
}