/**
 * Navbar Component - PROFESIONAL Y INTEGRADO CON SISTEMA COMPLEJO
 * Diseño: Bootstrap 5.3 + Mejoras visuales profesionales
 * Funcionalidad: Scroll effects, responsive, accesibilidad, tema dinámico
 */

/* ===== VARIABLES PROFESIONALES ===== */
:root {
  --navbar-height: 60px;
  --navbar-padding: 1rem;
  --navbar-brand-font-size: 1.25rem;
  --navbar-link-font-size: 0.95rem;
  --navbar-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --navbar-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  --navbar-scrolled-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
  --navbar-border-color: rgba(0, 0, 0, 0.08);
  --navbar-backdrop-blur: 10px;

  /* AdSense Auto Ads Protection */
  --adsense-top-buffer: 0px; /* Dinámico según ads detectados */
  --navbar-final-top: calc(var(--adsense-top-buffer));
}

/* ===== NAVBAR BASE - PROFESIONAL ===== */
.navbar {
  height: var(--navbar-height);
  padding: 0.5rem var(--navbar-padding);
  backdrop-filter: blur(var(--navbar-backdrop-blur));
  -webkit-backdrop-filter: blur(var(--navbar-backdrop-blur));
  transition: var(--navbar-transition);
  border-bottom: 1px solid var(--navbar-border-color);
  box-shadow: var(--navbar-shadow);
  z-index: 1030;
  background-color: rgba(248, 249, 250, 0.9);
}

/* ===== NAVBAR PRINCIPAL - ADSENSE AUTO ADS COMPATIBLE ===== */
#main-navbar {
  /* AdSense Auto Ads Compatible */
  top: var(--navbar-final-top);
  position: fixed;
  width: 100%;
  transition: top 0.3s ease, background-color 0.3s ease;
}

/* ===== COMPENSACIÓN PARA BODY - AUTO ADS PROTECTION ===== */
body:has(#main-navbar) {
  padding-top: calc(var(--navbar-height) + var(--navbar-final-top));
  transition: padding-top 0.3s ease;
}

/* Fallback para navegadores sin :has() */
body {
  padding-top: calc(var(--navbar-height) + var(--navbar-final-top));
  transition: padding-top 0.3s ease;
}

/* ===== CLASES PARA CUANDO SE DETECTAN AUTO ADS ===== */
/* NOTA: Los valores reales son aplicados dinámicamente por JavaScript */
body.adsense-top-detected {
  --adsense-top-buffer: 80px; /* Valor por defecto - JS override dinámico */
}

body.adsense-top-large {
  --adsense-top-buffer: 110px; /* Valor por defecto - JS override dinámico */
}

/* ===== FALLBACK SI NO HAY ADS - MÁS ESPECÍFICO ===== */
body:not(.adsense-top-detected):not(.adsense-top-large) {
  --adsense-top-buffer: 0px;
  padding-top: var(--navbar-height);
}

/* ===== PROTECCIÓN ADICIONAL PARA CONTENIDO PRINCIPAL ===== */
main#main-content {
  min-height: calc(100vh - var(--navbar-height) - var(--navbar-final-top));
  transition: min-height 0.3s ease;
}

/* ===== ESTADO DE LOADING PARA EVITAR FLASH ===== */
.navbar-loading {
  opacity: 0.9;
}

.navbar-loading.navbar-ready {
  opacity: 1;
}

/* ===== ESTADO SCROLLED - DINÁMICO ===== */
.navbar.navbar-scrolled {
  background-color: rgba(248, 249, 250, 0.95) !important;
  box-shadow: var(--navbar-scrolled-shadow);
  border-bottom-color: rgba(0, 0, 0, 0.12);
}

[data-bs-theme="dark"] .navbar.navbar-scrolled {
  background-color: rgba(33, 37, 41, 0.95) !important;
  border-bottom-color: rgba(255, 255, 255, 0.12);
}

/* ===== BRAND - PROFESIONAL ===== */
.navbar-brand {
  font-size: var(--navbar-brand-font-size);
  font-weight: 600;
  color: var(--bs-dark) !important;
  text-decoration: none;
  transition: var(--navbar-transition);
}

.navbar-brand:hover {
  color: var(--bs-primary) !important;
  opacity: 0.9;
}

.navbar-brand-logo {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  border-radius: 6px;
}

.brand-text {
  font-weight: 700;
  letter-spacing: -0.025em;
}

/* ===== NAV LINKS - PROFESIONAL ===== */
.navbar-nav .nav-link {
  font-size: var(--navbar-link-font-size);
  font-weight: 500;
  color: var(--bs-gray-700) !important;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  transition: var(--navbar-transition);
  position: relative;
}

.navbar-nav .nav-link:hover {
  color: var(--bs-primary) !important;
  background-color: rgba(var(--bs-primary-rgb), 0.08);
}

.navbar-nav .nav-link.active {
  color: var(--bs-primary) !important;
  background-color: rgba(var(--bs-primary-rgb), 0.12);
  font-weight: 600;
}

.navbar-nav .nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background-color: var(--bs-primary);
  border-radius: 1px;
}

/* ===== BOTONES ESPECIALES - TEMA Y DROPDOWN ===== */
.nav-link.btn.btn-link {
  background: none !important;
  border: none !important;
  color: var(--bs-gray-700) !important;
  padding: 0.5rem 1rem;
  font-size: var(--navbar-link-font-size);
  font-weight: 500;
  border-radius: 6px;
  transition: var(--navbar-transition);
}

.nav-link.btn.btn-link:hover {
  color: var(--bs-primary) !important;
  background-color: rgba(var(--bs-primary-rgb), 0.08) !important;
}

.nav-link.btn.btn-link:focus {
  box-shadow: 0 0 0 0.25rem rgba(var(--bs-primary-rgb), 0.25);
  outline: none;
}

/* ===== THEME TOGGLE - PROFESIONAL ===== */
.theme-toggle-btn {
  position: relative;
}

.theme-icon-light,
.theme-icon-dark {
  transition: var(--navbar-transition);
}

/* Light mode: show sun, hide moon */
.theme-icon-light { display: inline; }
.theme-icon-dark { display: none; }

/* Dark mode: show moon, hide sun */
[data-bs-theme="dark"] .theme-icon-light { display: none; }
[data-bs-theme="dark"] .theme-icon-dark { display: inline; }

/* ===== DROPDOWN MENUS - PROFESIONAL ===== */
.dropdown-menu {
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 0.5rem 0;
  margin-top: 0.5rem;
}

.dropdown-item {
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 4px;
  margin: 0 0.5rem;
  transition: var(--navbar-transition);
}

.dropdown-item:hover {
  background-color: rgba(var(--bs-primary-rgb), 0.08);
  color: var(--bs-primary);
}

.dropdown-item.active {
  background-color: rgba(var(--bs-primary-rgb), 0.12);
  color: var(--bs-primary);
}

.dropdown-divider {
  margin: 0.5rem 0;
  border-color: rgba(0, 0, 0, 0.08);
}

/* ===== MOBILE TOGGLE - PROFESIONAL ===== */
.navbar-toggler {
  border: none;
  padding: 0.375rem;
  background: transparent;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  transition: var(--navbar-transition);
}

.navbar-toggler:hover {
  background-color: rgba(var(--bs-primary-rgb), 0.08);
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 0.25rem rgba(var(--bs-primary-rgb), 0.25);
  outline: none;
}

.navbar-toggler-icon {
  width: 22px;
  height: 16px;
  position: relative;
  background: none !important;
}

.navbar-toggler-icon span {
  display: block;
  position: absolute;
  height: 2px;
  width: 100%;
  background: var(--bs-gray-700);
  border-radius: 1px;
  opacity: 1;
  left: 0;
  transform: rotate(0deg);
  transition: 0.25s ease-in-out;
}

.navbar-toggler-icon span:nth-child(1) { top: 0; }
.navbar-toggler-icon span:nth-child(2) { top: 7px; }
.navbar-toggler-icon span:nth-child(3) { top: 14px; }

/* Animación hamburger a X */
.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon span:nth-child(1) {
  top: 7px;
  transform: rotate(135deg);
}

.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon span:nth-child(2) {
  opacity: 0;
  left: -20px;
}

.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon span:nth-child(3) {
  top: 7px;
  transform: rotate(-135deg);
}

/* ===== RESPONSIVE - MÓVIL ===== */
@media (max-width: 991.98px) {
  .navbar-collapse {
    margin-top: 1rem;
    padding: 1rem;
    border-top: 1px solid var(--navbar-border-color);
    background-color: rgba(248, 249, 250, 0.98);
    backdrop-filter: blur(10px);
    border-radius: 0 0 8px 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  }

  .navbar-nav .nav-link {
    padding: 0.75rem 1rem;
    margin: 0.125rem 0;
    border-radius: 6px;
  }

  .navbar-nav .nav-link.active::after {
    display: none;
  }

  .navbar-nav .nav-link.active {
    background-color: rgba(var(--bs-primary-rgb), 0.12);
  }

  /* Dropdown en móvil */
  .dropdown-menu {
    border: none;
    box-shadow: none;
    background: transparent;
    padding: 0;
    margin: 0.25rem 0;
    position: static !important;
    transform: none !important;
  }

  .dropdown-item {
    padding: 0.5rem 1.5rem;
    margin: 0.125rem 0;
    background-color: rgba(var(--bs-gray-100-rgb, 248, 249, 250), 0.5);
    border-radius: 6px;
  }
}

/* ===== DARK MODE - SOLO TEXTOS Y CONTROLES ===== */
[data-bs-theme="dark"] .navbar {
  border-bottom-color: rgba(0, 0, 0, 0.08);
}

[data-bs-theme="dark"] .navbar-brand {
  color: var(--bs-dark) !important;
}

[data-bs-theme="dark"] .navbar-nav .nav-link {
  color: var(--bs-gray-700) !important;
}

[data-bs-theme="dark"] .navbar-nav .nav-link:hover,
[data-bs-theme="dark"] .nav-link.btn.btn-link:hover {
  color: var(--bs-primary) !important;
  background-color: rgba(var(--bs-primary-rgb), 0.08);
}

[data-bs-theme="dark"] .navbar-nav .nav-link.active {
  color: var(--bs-primary) !important;
  background-color: rgba(var(--bs-primary-rgb), 0.12);
}

[data-bs-theme="dark"] .nav-link.btn.btn-link {
  color: var(--bs-gray-700) !important;
}

[data-bs-theme="dark"] .navbar-toggler-icon span {
  background-color: var(--bs-gray-700);
}

[data-bs-theme="dark"] .dropdown-menu {
  background-color: rgba(33, 37, 41, 0.95);
  border-color: rgba(255, 255, 255, 0.08);
}

[data-bs-theme="dark"] .dropdown-item {
  color: var(--bs-gray-300);
}

[data-bs-theme="dark"] .dropdown-divider {
  border-color: rgba(255, 255, 255, 0.08);
}

[data-bs-theme="dark"] .navbar-collapse {
  border-top-color: rgba(0, 0, 0, 0.08);
  background-color: rgba(248, 249, 250, 0.98);
}

/* ===== DARK MODE MOBILE DROPDOWN ===== */
@media (max-width: 991.98px) {
  [data-bs-theme="dark"] .dropdown-item {
    background-color: rgba(var(--bs-gray-100-rgb, 248, 249, 250), 0.7);
    color: var(--bs-gray-700) !important;
  }

  [data-bs-theme="dark"] .dropdown-item:hover {
    background-color: rgba(var(--bs-primary-rgb), 0.12);
    color: var(--bs-primary) !important;
  }
}

/* ===== ACCESIBILIDAD ===== */
@media (prefers-reduced-motion: reduce) {
  .navbar,
  .navbar-brand,
  .navbar-nav .nav-link,
  .navbar-toggler,
  .navbar-toggler-icon span,
  .dropdown-menu,
  .dropdown-item {
    transition: none !important;
  }

  .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon span {
    transform: none !important;
  }
}

/* ===== PRINT STYLES ===== */
@media print {
  .navbar {
    position: static !important;
    background: white !important;
    border-bottom: 1px solid #000;
    box-shadow: none !important;
    backdrop-filter: none !important;
  }

  .navbar-brand {
    color: #000 !important;
  }

  .navbar-nav .nav-link {
    color: #000 !important;
  }
}