/* Sticky nav — transparent over hero, solid after scroll. */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 2rem;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background 0.3s ease, border-color 0.3s ease;
}
.nav--scrolled {
  background: var(--white);
  border-bottom-color: var(--cream-mid);
}

.nav__logo { display: block; }
.nav__logo img {
  height: 64px;
  width: auto;
  transition: filter 0.3s ease;
}
@media (max-width: 768px) {
  .nav__logo img { height: 52px; }
}
/* Over hero (light text on dark), invert the black logo to white */
.nav:not(.nav--scrolled) .nav__logo img {
  filter: invert(1) brightness(2);
}

.nav__links {
  display: flex;
  gap: 2rem;
  align-items: center;
}
.nav__links a {
  font-family: var(--font-body);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white);
  transition: color var(--transition);
}
.nav--scrolled .nav__links a { color: var(--ink-mid); }
.nav__links a:hover { color: var(--brown-light); }
.nav--scrolled .nav__links a:hover { color: var(--brown); }

/* Bilingual badge — small pill before the CTA */
.nav__lang {
  font-family: var(--font-body);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--white);
  border: 1px solid rgba(253, 251, 245, 0.45);
  padding: 0.25rem 0.55rem;
  border-radius: 2px;
  margin-right: 0.5rem;
  white-space: nowrap;
  transition: color 0.3s ease, border-color 0.3s ease;
}
.nav--scrolled .nav__lang {
  color: var(--kaki);
  border-color: var(--kaki);
}

.nav__cta { margin-left: 0.5rem; }
/* Over hero, primary button reads as ghost on dark backdrop */
.nav:not(.nav--scrolled) .nav__cta {
  background: transparent;
  border-color: var(--white);
  color: var(--white);
}
.nav:not(.nav--scrolled) .nav__cta:hover {
  background: var(--white);
  color: var(--ink);
}

/* Hamburger — mobile only */
.nav__burger {
  display: none;
  flex-direction: column;
  gap: 4px;
  width: 28px;
  height: 24px;
  padding: 0;
}
.nav__burger span {
  display: block;
  height: 1.5px;
  background: var(--white);
  transition: background 0.3s ease, transform 0.3s ease, opacity 0.3s ease;
}
.nav--scrolled .nav__burger span { background: var(--ink); }

body.nav--open { overflow: hidden; }
body.nav--open .nav__burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); background: var(--white); }
body.nav--open .nav__burger span:nth-child(2) { opacity: 0; }
body.nav--open .nav__burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); background: var(--white); }

@media (max-width: 900px) {
  .nav__burger { display: flex; }
  .nav__cta,
  .nav__lang { display: none; }
  .nav__links {
    position: fixed;
    inset: 0;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    background: var(--ink);
    transform: translateX(100%);
    transition: transform 0.4s ease;
    z-index: 999;
  }
  body.nav--open .nav__links { transform: translateX(0); }
  .nav__links a,
  .nav--scrolled .nav__links a {
    font-family: var(--font-display);
    font-size: 1.8rem;
    color: var(--white);
    text-transform: none;
    letter-spacing: 0.02em;
    font-style: italic;
  }
}