/* ================================
   📱 MEJORAS MOBILE-FIRST RESPONSIVE
   Compatible con iOS, Android, Windows Mobile
   ================================ */

/* ================================
   AJUSTES ESPECÍFICOS POR PLATAFORMA
   ================================ */

/* === iOS Safari Específico === */
@supports (-webkit-touch-callout: none) {
  /* Safe Area para iPhone X y superiores */
  .main-header {
    padding-top: max(env(safe-area-inset-top), 0px);
  }

  .mobile-nav {
    padding-bottom: max(env(safe-area-inset-bottom), 1rem);
  }

  /* Mejorar scroll en iOS */
  .mobile-nav-content {
    -webkit-overflow-scrolling: touch;
  }

  /* Fix para botones en iOS */
  button,
  .btn,
  .theme-toggle {
    -webkit-appearance: none;
    appearance: none;
  }

  /* Prevenir zoom en inputs en iOS */
  input,
  select,
  textarea {
    font-size: 16px !important;
  }
}

/* === Android Chrome Específico === */
@media (max-width: 768px) {
  /* Mejorar área táctil en Android */
  .mobile-nav-item,
  .theme-toggle,
  .mobile-menu-btn {
    min-height: 48px;
    min-width: 48px;
  }

  /* Prevenir selección accidental de texto */
  .header-actions,
  .mobile-nav-content {
    -webkit-user-select: none;
    -moz-user-select: none;
    user-select: none;
  }

  /* Pero permitir selección en textos específicos */
  .user-name,
  .mobile-nav-item span {
    -webkit-user-select: text;
    -moz-user-select: text;
    user-select: text;
  }
}

/* ================================
   BREAKPOINTS MEJORADOS
   ================================ */

/* === Teléfonos Pequeños: 0-374px === */
@media (max-width: 374px) {
  .header-container {
    padding: 0.5rem;
    gap: 0.375rem;
  }

  .brand-link {
    padding: 0.25rem 0.375rem;
    font-size: 0.875rem;
  }

  .brand-icon {
    width: 24px;
    height: 24px;
  }

  .theme-toggle {
    width: 32px;
    height: 32px;
    padding: 0;
  }

  .theme-toggle i {
    width: 16px;
    height: 16px;
  }

  .mobile-menu-btn {
    width: 32px;
    height: 32px;
  }

  .burger-line {
    width: 16px;
  }

  .user-name {
    max-width: 60px;
    font-size: 0.75rem;
  }

  /* Ocultar elementos no esenciales en pantallas muy pequeñas */
  .desktop-user-info {
    display: none !important;
  }
}

/* === Teléfonos: 375px - 639px === */
@media (min-width: 375px) and (max-width: 639px) {
  .header-container {
    padding: var(--space-3) var(--space-4);
  }

  .brand-icon {
    width: 32px;
    height: 32px;
  }

  .theme-toggle {
    width: 44px;
    height: 44px;
  }

  .mobile-nav-content {
    padding: var(--space-6) var(--space-4);
  }
}

/* === Tablets Verticales: 640px - 767px === */
@media (min-width: 640px) and (max-width: 767px) {
  .header-container {
    padding: var(--space-4) var(--space-6);
  }

  .mobile-nav-content {
    max-width: 400px;
    margin: 0 auto;
    padding: var(--space-8) var(--space-6);
  }
}

/* === Tablets Horizontales: 768px - 1023px === */
@media (min-width: 768px) and (max-width: 1023px) {
  .header-container {
    padding: var(--space-4) var(--space-8);
  }

  .mobile-nav-content {
    max-width: 500px;
    margin: 0 auto;
    padding: var(--space-10) var(--space-8);
  }

  .desktop-user-info {
    display: flex !important;
  }
}

/* === Desktop: 1024px+ === */
@media (min-width: 1024px) {
  .theme-toggle {
    width: 48px;
    height: 48px;
  }
}

/* ================================
   ORIENTACIÓN DE DISPOSITIVO
   ================================ */

/* Landscape en móviles */
@media (max-width: 926px) and (orientation: landscape) {
  .mobile-nav {
    height: calc(100vh - var(--header-height, 60px));
  }

  .mobile-nav-content {
    padding: var(--space-4) var(--space-6);
  }

  .mobile-user-profile {
    padding: var(--space-4);
    margin-bottom: var(--space-4);
  }

  .mobile-menu-section {
    margin-bottom: var(--space-4);
  }

  .mobile-menu-section h4 {
    margin-bottom: var(--space-2);
  }

  .mobile-nav-item {
    padding: var(--space-3);
    margin-bottom: var(--space-2);
  }
}

/* ================================
   MEJORAS DE TÁCTIL
   ================================ */

/* Área táctil mínima de 44x44px (Apple HIG) */
@media (pointer: coarse) {
  button,
  a,
  .nav-item,
  .mobile-nav-item,
  .theme-toggle,
  .mobile-menu-btn {
    min-height: 44px;
    min-width: 44px;
  }

  /* Espaciado adicional entre elementos táctiles */
  .header-actions {
    gap: var(--space-3);
  }

  .mobile-nav-item {
    margin-bottom: var(--space-3);
  }
}

/* ================================
   MEJORAS VISUALES MÓVILES
   ================================ */

/* Aumentar contraste en móviles bajo luz solar */
@media (max-width: 768px) {
  .main-header {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  }

  [data-theme="dark"] .main-header {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  }

  /* Mejorar legibilidad de texto */
  .mobile-nav-item {
    font-size: 1rem;
    line-height: 1.5;
  }

  .user-name {
    font-size: 0.875rem;
    font-weight: 600;
  }
}

/* ================================
   OPTIMIZACIONES DE PERFORMANCE
   ================================ */

/* Mejorar rendering en móviles */
@media (max-width: 768px) {
  .theme-toggle,
  .mobile-menu-btn,
  .mobile-nav-item {
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
  }

  /* Reducir animaciones complejas en móviles */
  @media (prefers-reduced-motion: no-preference) {
    .mobile-nav {
      transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .burger-line {
      transition: all 0.3s ease;
    }

    .theme-toggle-icon {
      transition: opacity 0.2s ease, transform 0.2s ease;
    }
  }
}

/* ================================
   ACCESIBILIDAD MÓVIL
   ================================ */

/* Focus visible para navegación táctil y teclado */
@media (max-width: 768px) {
  *:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 3px;
  }

  /* Mejorar área de focus en elementos pequeños */
  .theme-toggle:focus-visible,
  .mobile-menu-btn:focus-visible {
    outline-width: 4px;
  }
}

/* ================================
   ESTADOS DE CARGA
   ================================ */

/* Skeleton screens para mejor UX en carga */
@media (max-width: 768px) {
  .loading .mobile-nav-item {
    background: linear-gradient(
      90deg,
      var(--bg-secondary) 0%,
      var(--bg-hover) 50%,
      var(--bg-secondary) 100%
    );
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
  }

  @keyframes skeleton-loading {
    0% {
      background-position: 200% 0;
    }
    100% {
      background-position: -200% 0;
    }
  }
}

/* ================================
   MEJORAS DE CONTRASTE
   ================================ */

/* Modo de alto contraste para Windows */
@media (prefers-contrast: high) {
  .theme-toggle,
  .mobile-menu-btn {
    border: 2px solid currentColor;
  }

  .mobile-nav-item {
    border: 1px solid var(--border);
  }

  .mobile-nav-item:hover,
  .mobile-nav-item:focus {
    border-color: var(--primary);
    border-width: 2px;
  }
}

/* ================================
   SOPORTE PARA NOTCHES Y BORDES CURVOS
   ================================ */

/* iPhone X y superiores */
@supports (padding: max(0px)) {
  .main-header {
    padding-left: max(var(--space-4), env(safe-area-inset-left));
    padding-right: max(var(--space-4), env(safe-area-inset-right));
  }

  .mobile-nav {
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
  }
}

/* ================================
   MEJORAS PARA PWA
   ================================ */

/* Cuando se ejecuta como PWA */
@media (display-mode: standalone) {
  .main-header {
    /* Espacio adicional para la barra de estado */
    padding-top: calc(var(--space-4) + env(safe-area-inset-top));
  }

  /* Prevenir pull-to-refresh en PWA */
  body {
    overscroll-behavior-y: contain;
  }
}

/* ================================
   MEJORAS PARA DARK MODE EN MÓVILES
   ================================ */

@media (max-width: 768px) {
  /* Reducir brillo de fondos blancos en dark mode */
  [data-theme="dark"] .mobile-nav-item.featured,
  [data-theme="dark"] .mobile-nav-item.scanner,
  [data-theme="dark"] .mobile-nav-item.admin {
    opacity: 0.95;
  }

  /* Mejorar contraste de texto en dark mode */
  [data-theme="dark"] .mobile-nav-item {
    color: var(--text-primary);
  }

  [data-theme="dark"] .mobile-nav-item:hover {
    background: var(--bg-hover);
  }
}

/* ================================
   TOOLTIP MÓVIL PARA THEME TOGGLE
   ================================ */

@media (max-width: 768px) {
  .theme-toggle[title]::after {
    content: attr(title);
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius);
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
    z-index: 1000;
  }

  .theme-toggle:active::after {
    opacity: 1;
  }
}

/* ================================
   MEJORAS DE TIPOGRAFÍA RESPONSIVE
   ================================ */

/* Escala de fuentes adaptativa */
@media (max-width: 374px) {
  html {
    font-size: 14px;
  }
}

@media (min-width: 375px) and (max-width: 639px) {
  html {
    font-size: 15px;
  }
}

@media (min-width: 640px) and (max-width: 1023px) {
  html {
    font-size: 16px;
  }
}

@media (min-width: 1024px) {
  html {
    font-size: 16px;
  }
}

/* ================================
   UTILIDADES RESPONSIVE
   ================================ */

/* Espaciado adaptativo */
.container-mobile {
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

@media (min-width: 640px) {
  .container-mobile {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

@media (min-width: 1024px) {
  .container-mobile {
    padding-left: var(--space-8);
    padding-right: var(--space-8);
  }
}

/* Clases de visibilidad responsive */
.show-mobile {
  display: block !important;
}

.show-tablet {
  display: none !important;
}

.show-desktop {
  display: none !important;
}

@media (min-width: 640px) {
  .show-mobile {
    display: none !important;
  }

  .show-tablet {
    display: block !important;
  }
}

@media (min-width: 1024px) {
  .show-tablet {
    display: none !important;
  }

  .show-desktop {
    display: block !important;
  }
}

/* ================================
   FIX PARA SCROLL EN MÓVILES
   ================================ */

/* Prevenir scroll del body cuando el menú móvil está abierto */
.mobile-nav-open {
  overflow: hidden !important;
  height: 100vh !important;
}

.mobile-nav-open .mobile-nav {
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

/* ================================
   MEJORAS DE ANIMACIÓN MÓVIL
   ================================ */

@media (max-width: 768px) {
  /* Animaciones más rápidas en móviles */
  * {
    --transition-fast: all 0.15s ease;
    --transition: all 0.2s ease;
    --transition-slow: all 0.3s ease;
  }

  /* Reducir motion sickness en móviles */
  @media (prefers-reduced-motion: reduce) {
    .mobile-nav,
    .burger-line,
    .theme-toggle-icon {
      transition: none !important;
      animation: none !important;
    }
  }
}