/* ============================================================
   navbar.css — Barra de navegación fija con glassmorphism
   ============================================================ */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--navbar-h);
  transition: background var(--transition-smooth),
              backdrop-filter var(--transition-smooth),
              box-shadow var(--transition-smooth);
}

/* Estado inicial: transparente */
.navbar--transparent {
  background: transparent;
  box-shadow: none;
}

/* Estado scrolled: glassmorphism */
.navbar--scrolled {
  background: rgba(10, 10, 15, 0.72);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  box-shadow: 0 1px 0 rgba(77, 200, 232, 0.15),
              0 4px 32px rgba(0, 0, 0, 0.45);
}

/* Contenedor interno */
.navbar__container {
  max-width: var(--max-width);
  height: 100%;
  margin-inline: auto;
  padding-inline: var(--space-6);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--space-6);
}

/* Logo */
.navbar__logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-self: start;
}

.navbar__logo img {
  height: 56px;
  width: auto;
  transition: transform var(--transition-base), filter var(--transition-base);
}

.navbar__logo:hover img {
  transform: scale(1.04);
  filter: drop-shadow(0 0 8px rgba(77, 200, 232, 0.5));
}

/* Nav links — centrado en la columna del medio */
.navbar__nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  justify-self: center;
}

.navbar__link {
  position: relative;
  padding: 0.5rem 0.85rem;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 80%;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--magenta));
  border-radius: var(--radius-full);
  transition: transform var(--transition-base);
}

.navbar__link:hover,
.navbar__link.active {
  color: var(--text-primary);
}

.navbar__link:hover::after,
.navbar__link.active::after {
  transform: translateX(-50%) scaleX(1);
}

/* CTA Button — alineado a la derecha */
.navbar__cta {
  flex-shrink: 0;
  justify-self: end;
  padding: 0.55rem 1.25rem;
  font-size: var(--fs-sm);
}

/* Burger (mobile) */
.navbar__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  justify-self: end;
  padding: 4px;
  background: transparent;
  cursor: pointer;
}

.navbar__burger span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--text-primary);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

/* Burger open state */
.navbar__burger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.navbar__burger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.navbar__burger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .navbar__container {
    grid-template-columns: 1fr auto;
  }

  .navbar__nav {
    position: fixed;
    top: var(--navbar-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(10, 10, 15, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: var(--space-4) var(--space-6);
    transform: translateY(-100%) translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-smooth), opacity var(--transition-smooth);
    justify-self: unset;
  }

  .navbar__nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .navbar__link {
    padding: var(--space-4) 0;
    border-bottom: 1px solid var(--border);
    font-size: var(--fs-base);
  }

  .navbar__link::after {
    display: none;
  }

  .navbar__cta {
    display: none;
  }

  .navbar__burger {
    display: flex;
  }
}