/* ============================================================
   NAV — sticky + hamburguesa
   ============================================================ */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(8, 8, 8, 0.65);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease);
}

.nav.is-scrolled {
  background: rgba(8, 8, 8, 0.95);
  border-bottom-color: var(--line);
}

.nav__inner {
  max-width: var(--maxw);
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav__logo { height: 40px; width: auto; }

.nav__brand-text {
  font-family: var(--font-title);
  font-size: 1.6rem;
  letter-spacing: 0.18em;
  color: var(--text);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav__link {
  position: relative;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--muted);
  transition: color 0.25s var(--ease);
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0; bottom: -6px;
  width: 0; height: 2px;
  background: var(--red);
  transition: width 0.3s var(--ease);
}

.nav__link:hover { color: var(--text); }
.nav__link:hover::after { width: 100%; }

.nav__lang {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text);
  border: 1px solid var(--line);
  padding: 6px 12px;
  border-radius: 2px;
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease);
}

.nav__lang:hover { border-color: var(--red); color: var(--red); }

.nav__cta { font-size: 0.85rem; padding: 10px 18px; }

/* Hamburguesa */
.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.nav__burger span {
  display: block;
  width: 26px; height: 2px;
  background: var(--text);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

.nav__burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger.is-open span:nth-child(2) { opacity: 0; }
.nav__burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Móvil ---------- */
@media (max-width: 900px) {
  .nav__burger { display: flex; }

  .nav__links {
    position: fixed;
    top: var(--nav-h);
    right: 0;
    width: min(80vw, 320px);
    height: calc(100vh - var(--nav-h));
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 22px;
    padding: 40px 32px;
    background: #0a0a0a;
    border-left: 1px solid var(--line);
    transform: translateX(100%);
    transition: transform 0.4s var(--ease);
  }

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

  .nav__link { font-size: 1.15rem; }
  .nav__cta { width: 100%; text-align: center; margin-top: 8px; }
}