/* Black Diamond Spa — Navigation */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  height: var(--nav-height);
  background: rgba(26, 29, 33, 0.80);
  -webkit-backdrop-filter: blur(24px) saturate(1.5);
  backdrop-filter: blur(24px) saturate(1.5);
  border-bottom: 1px solid var(--divider);
  transition: background var(--transition-slow);
  /* iOS notch */
  padding-top: env(safe-area-inset-top);
}

.nav.nav--scrolled {
  background: rgba(26, 29, 33, 0.95);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  max-width: var(--container-xl);
  margin-inline: auto;
  padding-inline: var(--container-pad);
  gap: var(--sp-xl);
}

@media (min-width: 1024px) {
  .nav__inner {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    justify-content: stretch;
  }
}

/* Logo */
.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  color: var(--text-primary);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 500;
  letter-spacing: var(--ls-logo);
  text-transform: uppercase;
  white-space: nowrap;
  flex-shrink: 0;
  transition: color var(--transition-base);
}

@media (min-width: 1024px) {
  .nav__logo {
    grid-column: 1;
    justify-self: start;
  }
}

.nav__logo:hover { color: var(--tiffany); }

.nav__logo-diamond,
.footer__logo-diamond {
  display: none;
}

/* Desktop links */
.nav__links {
  display: none;
  align-items: center;
  gap: var(--sp-xl);
  list-style: none;
}

@media (min-width: 1024px) {
  .nav__links {
    display: flex;
    grid-column: 2;
    justify-self: center;
  }
}

.nav__links a {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  transition: color var(--transition-base);
  padding-block: var(--sp-sm);
  position: relative;
}

.nav__links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--tiffany);
  transition: width var(--transition-base);
}

.nav__links a:hover,
.nav__links a[aria-current="page"] {
  color: var(--tiffany);
}

.nav__links a:hover::after,
.nav__links a[aria-current="page"]::after {
  width: 100%;
}

/* Language switcher — visible on all breakpoints */
.nav__lang {
  display: flex;
  gap: 2px;
  list-style: none;
  flex-shrink: 0;
}

.nav__lang-btn {
  padding: 0.3rem 0.5rem;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-base);
  min-height: 36px;
  min-width: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

@media (min-width: 768px) {
  .nav__lang-btn {
    padding: 0.3rem 0.6rem;
    font-size: var(--fs-xs);
    min-height: 44px;
  }
}

.nav__lang-btn:hover {
  color: var(--tiffany);
  border-color: rgba(10, 186, 181, 0.30);
}

.nav__lang-btn.active,
.nav__lang-btn[aria-current="true"] {
  color: var(--text-primary);
  background: rgba(10, 186, 181, 0.12);
  border-color: rgba(10, 186, 181, 0.35);
}

/* Right controls */
.nav__right {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-shrink: 0;
  margin-left: auto;
}

@media (min-width: 1024px) {
  .nav__right {
    grid-column: 3;
    justify-self: end;
    margin-left: 0;
  }
}

.nav__whatsapp {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  color: var(--tiffany);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: color var(--transition-base), background var(--transition-base);
  -webkit-tap-highlight-color: transparent;
}

.nav__whatsapp:hover {
  color: var(--tiffany-light);
  background: rgba(10, 186, 181, 0.08);
}

/* Hamburger button */
.nav__burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

@media (min-width: 1024px) {
  .nav__burger { display: none; }
}

.nav__burger-line {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base), background var(--transition-base);
  transform-origin: center;
}

.nav__burger[aria-expanded="true"] .nav__burger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__burger[aria-expanded="true"] .nav__burger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav__burger[aria-expanded="true"] .nav__burger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Drawer */
.nav__drawer {
  position: fixed;
  inset: 0;
  z-index: var(--z-drawer);
  display: flex;
  flex-direction: column;
  background: var(--bg-deep);
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  overflow-y: auto;
  overscroll-behavior: contain;
  padding-top: env(safe-area-inset-top);
  padding-bottom: env(safe-area-inset-bottom);
  padding-inline: max(1.5rem, var(--container-pad));
}

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

.nav__drawer-head {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-shrink: 0;
  min-height: var(--nav-height);
  margin-bottom: var(--sp-xs);
}

.nav__drawer-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-right: -0.35rem;
  padding: 0;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
  transition: color var(--transition-base), background var(--transition-base);
  -webkit-tap-highlight-color: transparent;
}

.nav__drawer-close:hover {
  color: var(--tiffany);
  background: rgba(10, 186, 181, 0.08);
}

.nav__drawer-links {
  list-style: none;
  padding-block: var(--sp-sm);
  padding-inline: 0.35rem;
}

.nav__drawer-links li + li {
  border-top: 1px solid var(--divider);
}

.nav__drawer-links a {
  display: block;
  padding: var(--sp-lg) 0;
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  color: var(--text-primary);
  transition: color var(--transition-base);
}

.nav__drawer-links a:hover,
.nav__drawer-links a[aria-current="page"] {
  color: var(--tiffany);
}

.nav__drawer-lang {
  display: none;
}

.nav__overlay {
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-drawer) - 1);
  background: rgba(0, 0, 0, 0.6);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-slow);
}

.nav__overlay.is-visible {
  opacity: 1;
  pointer-events: auto;
}

@media (max-width: 1023px) {
  .nav__inner {
    gap: 0.5rem;
    padding-inline: max(0.75rem, var(--container-pad));
  }

  .nav__logo {
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    min-width: 0;
    flex: 1;
  }

  .nav__logo span {
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .nav__whatsapp {
    width: 36px;
    height: 36px;
  }

  .nav__whatsapp svg {
    width: 20px;
    height: 20px;
  }
}