/* Header y Navegación - Luxury Glassmorphism */
header {
  background-color: var(--glass-bg);
  border-bottom: 1px solid var(--glass-border);
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow-sm);
  width: 100%;
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  transition: var(--transition);
}

.header-container {
  max-width: 80rem;
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4.5rem;
}

.header-left {
  display: flex;
  align-items: center;
}

.header-center {
  flex: 1;
  display: flex;
  justify-content: center;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition-slow);
  letter-spacing: -0.02em;
}

.brand:hover {
  color: var(--primary-light);
  transform: scale(1.02);
}

.brand h1 {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
  color: inherit;
}

.brand i,
.brand svg {
  width: 1.75rem;
  height: 1.75rem;
}

/* Navegación principal */
.main-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 1.2rem;
  color: var(--text-light);
  text-decoration: none;
  border-radius: var(--radius);
  transition: var(--transition);
  font-weight: 600;
  font-size: 0.9rem;
}

.nav-link i,
.nav-link svg {
  width: 1.25rem;
  height: 1.25rem;
}

.nav-link:hover {
  color: var(--primary);
  background-color: var(--background);
}

.nav-link.active {
  color: var(--primary);
  background-color: var(--background);
  font-weight: 600;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -0.5rem;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--primary);
  border-radius: 2px;
}

.mobile-bottom-nav {
  display: none;
}

@media (min-width: 1024px) {
  .header-container {
    padding: 0.85rem 1.15rem;
  }

  .brand {
    font-size: 1.62rem;
  }

  .nav-link {
    padding: 0.55rem 1rem;
  }

  .nav-link:hover {
    transform: translateY(-1px);
  }
}

/* Icono de notificaciones */
.notification-bell {
  position: relative;
}

.notification-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  color: var(--text);
  transition: var(--transition);
}

.notification-link:hover {
  background-color: var(--background);
  color: var(--primary);
}

.notification-link i,
.notification-link svg {
  width: 1.25rem;
  height: 1.25rem;
}

.notification-badge {
  position: absolute;
  top: -0.25rem;
  right: -0.25rem;
  min-width: 1.25rem;
  height: 1.25rem;
  background-color: var(--danger);
  color: white;
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 0.25rem;
}

/* Botones de autenticación */
.auth-buttons {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.auth-buttons .btn {
  font-size: 0.875rem;
  padding: 0.625rem 1.25rem;
  min-width: auto;
  white-space: nowrap;
  flex-shrink: 0;
}

.auth-buttons .btn i,
.auth-buttons .btn svg {
  width: 1rem;
  height: 1rem;
}

/* ─── BLOQUE DEFENSIVO: garantiza visibilidad de iconos en header ───
   Alta especificidad para sobrescribir cualquier CSS page-specific
   que pueda ocultar los iconos del nav (ej: modal-icons.css cacheado).
   ─────────────────────────────────────────────────────────────────── */
header .nav-link i,
header .nav-link svg,
header .nav-link svg.feather {
  display: inline-block !important;
  width: 1.25rem !important;
  height: 1.25rem !important;
  min-width: 1.25rem !important;
  min-height: 1.25rem !important;
  stroke: currentColor !important;
  fill: none !important;
  vertical-align: middle !important;
}

header .auth-buttons .btn i,
header .auth-buttons .btn svg,
header .auth-buttons .btn svg.feather {
  display: inline-block !important;
  width: 1rem !important;
  height: 1rem !important;
  min-width: 1rem !important;
  min-height: 1rem !important;
  stroke: currentColor !important;
  fill: none !important;
  vertical-align: middle !important;
}

header .mobile-menu-button i,
header .mobile-menu-button svg,
header .mobile-menu-button svg.feather {
  display: block !important;
  width: 1.5rem !important;
  height: 1.5rem !important;
  stroke: currentColor !important;
  fill: none !important;
}