/* ============================================================
   NAVBAR.CSS — Estilos de navegación fija y elementos del header
   Fase 1: Navbar profesional, ligera y fija sobre el Hero.
   ============================================================ */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-navbar);
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  background-color: transparent;
  transition: background-color var(--transition-base), padding var(--transition-base), box-shadow var(--transition-base), backdrop-filter var(--transition-base);
}

.navbar--scrolled {
  background-color: rgba(17, 19, 21, 0.72);
  backdrop-filter: blur(14px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.16);
  padding-block: var(--space-sm);
}

.navbar__brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.navbar__logo {
  display: block;
  height: 1.75rem;
  width: auto;
}

.navbar__name {
  font-family: var(--font-body);
  font-size: var(--fs-lg);
  font-weight: var(--fw-medium);
  color: var(--color-text-primary);
  letter-spacing: 0.02em;
}

.navbar__menu {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.navbar__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  color: var(--color-text-primary);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  text-transform: uppercase;
  letter-spacing: var(--ls-wide);
  transition: color var(--transition-fast);
}

.navbar__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.25rem;
  width: 0;
  height: 2px;
  background: var(--color-green);
  border-radius: 999px;
  transition: width var(--transition-fast);
}

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

.navbar__link:hover::after,
.navbar__link--active::after {
  width: 100%;
}

.navbar__discord-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--space-xs) + 2px) var(--space-lg);
  border-radius: var(--radius-button);
  background-color: var(--color-green);
  color: var(--color-bg-primary);
  font-weight: var(--fw-bold);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-fast);
  background-image: url("../assets/icons/discord-icon.svg");
  background-repeat: no-repeat;
  background-position: var(--btn-icon-inset) center;
  background-size: var(--btn-icon-size) var(--btn-icon-size);
  padding-inline-start: calc(var(--btn-icon-inset) + var(--btn-icon-size) + var(--btn-icon-gap));
}

.navbar__discord-btn:hover {
  background-color: var(--color-green-hover);
  transform: translateY(-1px) scale(1.01);
  box-shadow: var(--shadow-glow-green);
}

.navbar__toggle {
  display: none;
}

/* ---------- Navbar móvil ---------- */

.navbar__brand {
  min-width: 0;
}

@media (max-width: 768px) {
  .navbar__toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 2.25rem;
    height: 2.25rem;
  }

  .navbar__toggle span {
    display: block;
    width: 1.5rem;
    height: 2px;
    background-color: var(--color-text-primary);
    border-radius: 999px;
    transition: transform var(--transition-fast), opacity var(--transition-fast);
  }

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

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

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

  .navbar__menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg) var(--space-lg);
    background-color: rgba(17, 19, 21, 0.96);
    backdrop-filter: blur(14px);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
    transition: max-height var(--transition-base), opacity var(--transition-base);
  }

  .navbar__menu--open {
    max-height: 26rem;
    opacity: 1;
    pointer-events: auto;
  }

  .navbar__links {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
  }

  .navbar__discord-btn {
    justify-content: center;
    width: 100%;
  }
}