.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  height: var(--nav-height);
  background-color: rgba(13, 27, 46, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(91, 184, 196, 0.18);
}

.navbar__inner {
  height: 100%;
  width: 100%;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.navbar__brand {
  font-family: var(--font-brand);
  font-weight: 700;
  letter-spacing: 0.22em;
  font-size: 1.15rem;
  color: var(--blanco-glaciar);
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
}

.navbar__brand-logo {
  height: 36px;
  width: auto;
  display: block;
  filter: drop-shadow(0 2px 6px rgba(91, 184, 196, 0.35));
}

.navbar__brand-text {
  line-height: 1;
  display: inline-flex;
  align-items: center;
}

.navbar__brand-accent {
  color: var(--celeste-teal);
  font-weight: 500;
}

@media (max-width: 640px) {
  .navbar__brand-logo {
    height: 28px;
  }
}

.navbar__menu {
  display: flex;
  align-items: stretch;
  height: 100%;
  list-style: none;
  margin: 0;
  padding: 0;
}

.navbar__item {
  display: flex;
  align-items: center;
}

.navbar__item + .navbar__item {
  border-left: 1px solid var(--celeste-teal);
}

.navbar__link {
  display: inline-flex;
  align-items: center;
  height: 100%;
  padding: 0 1.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;

  background-image: linear-gradient(
    135deg,
    var(--celeste-teal),
    var(--blanco-glaciar)
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: var(--blanco-glaciar);

  transition: color var(--transition-mid),
              letter-spacing var(--transition-mid);
}

.navbar__link:hover,
.navbar__link:focus-visible {
  color: transparent;
  letter-spacing: 0.18em;
}

/* --- Hamburger (only visible mobile) --- */
.navbar__hamburger {
  display: none;
  width: 40px;
  height: 40px;
  padding: 8px;
  background: transparent;
  border: 1px solid rgba(91, 184, 196, 0.30);
  border-radius: 6px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.navbar__hamburger:hover,
.navbar__hamburger:focus-visible {
  border-color: var(--celeste-teal);
  background-color: rgba(91, 184, 196, 0.10);
}

.navbar__hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--blanco-glaciar);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.2s ease;
}

.navbar__hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.navbar__hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.navbar__hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 640px) {
  .navbar__brand {
    font-size: 0.95rem;
    letter-spacing: 0.18em;
  }

  .navbar__hamburger {
    display: flex;
  }

  .navbar__nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(13, 27, 46, 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(91, 184, 196, 0.18);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.28s ease-out, opacity 0.28s ease-out, visibility 0.28s ease-out;
  }

  .navbar[data-menu-open="true"] .navbar__nav {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .navbar__menu {
    flex-direction: column;
    height: auto;
    align-items: stretch;
  }

  .navbar__item {
    width: 100%;
  }

  .navbar__item + .navbar__item {
    border-left: none;
    border-top: 1px solid rgba(91, 184, 196, 0.16);
  }

  .navbar__link {
    width: 100%;
    padding: 1.1rem 1.5rem;
    font-size: 0.9rem;
    letter-spacing: 0.18em;
    justify-content: flex-start;
  }
}