/**
 * Language Selector Component - ELITE VERSION
 * Selector de idioma profesional multiidioma
 * Inspirado en Google Translate, Apple, Netflix
 * Integrado con design-system.css
 */

/* ===== IMPORTAR DESIGN SYSTEM ===== */
@import url("../design-system.css");

/* ===== VARIABLES ESPECÍFICAS ===== */
:root {
  --language-selector-animation-duration: 0.3s;
  --language-selector-hover-lift: -2px;
  --language-selector-flag-size: 1.2em;
  --language-selector-dropdown-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
  --language-selector-max-height: 400px;
  --language-selector-min-width: 200px;
  --language-selector-border-radius: var(--radius-lg);
  --language-selector-transition: all var(--duration-fast)
    var(--easing-standard);
}

/* ===== ANIMACIONES ESPECÍFICAS ===== */
@keyframes languageSelectorFadeIn {
  from {
    opacity: 0;
    transform: translateY(var(--space-2)) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes languageFlagWave {
  0%,
  100% {
    transform: rotate(0deg);
  }
  25% {
    transform: rotate(2deg);
  }
  75% {
    transform: rotate(-2deg);
  }
}

@keyframes languageCheckPulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
  }
}

/* ===== COMPONENTE PRINCIPAL ===== */
.language-selector-btn {
  min-width: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--language-selector-border-radius);
  background: var(--color-surface);
  color: var(--color-on-surface);
  border: 2px solid var(--color-outline-variant);
  font-weight: var(--font-weight-medium);
  transition: var(--language-selector-transition);
  position: relative;
  overflow: hidden;
  contain: layout style;
  transform: translateZ(0);
  backface-visibility: hidden;
}

.language-selector-btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.1),
    transparent
  );
  transition: left var(--duration-normal) var(--easing-standard);
}

.language-selector-btn:hover::before {
  left: 100%;
}

.language-selector-btn:hover {
  background: var(--color-primary-50);
  border-color: var(--color-primary-300);
  color: var(--color-primary-700);
  transform: translateY(var(--language-selector-hover-lift));
  box-shadow: var(--shadow-md);
}

.language-selector-btn:focus-visible {
  outline: 3px solid
    color-mix(in srgb, var(--color-primary-600) 40%, transparent);
  outline-offset: 2px;
}

.language-selector-btn:active {
  transform: translateY(0);
}

.language-selector-btn.show {
  background: var(--color-primary-100);
  border-color: var(--color-primary-500);
  color: var(--color-primary-700);
}

/* ===== DROPDOWN MENU ===== */
.language-dropdown {
  background: var(--color-surface);
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--language-selector-border-radius);
  box-shadow: var(--language-selector-dropdown-shadow);
  max-height: var(--language-selector-max-height);
  min-width: var(--language-selector-min-width);
  overflow-y: auto;
  padding: var(--space-2);
  animation: languageSelectorFadeIn var(--language-selector-animation-duration)
    var(--easing-emphasized) forwards;
  contain: layout style;
  transform: translateZ(0);
}

.language-dropdown::-webkit-scrollbar {
  width: 6px;
}

.language-dropdown::-webkit-scrollbar-track {
  background: var(--color-surface-variant);
  border-radius: var(--radius-full);
}

.language-dropdown::-webkit-scrollbar-thumb {
  background: var(--color-outline);
  border-radius: var(--radius-full);
}

.language-dropdown::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary-400);
}

/* ===== HEADER DEL DROPDOWN ===== */
.language-dropdown .dropdown-header {
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  color: var(--color-primary-600);
  border-bottom: 1px solid var(--color-outline-variant);
  padding: var(--space-3) var(--space-4) var(--space-3) var(--space-4);
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
}

.language-dropdown .dropdown-header i {
  color: var(--color-primary-500);
}

/* ===== OPCIONES DE IDIOMA ===== */
.language-option {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  color: var(--color-on-surface);
  text-decoration: none;
  transition: var(--language-selector-transition);
  position: relative;
  overflow: hidden;
  contain: layout style;
  transform: translateZ(0);
  backface-visibility: hidden;
}

.language-option::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(var(--color-primary-500-rgb), 0.1),
    transparent
  );
  transition: left var(--duration-normal) var(--easing-standard);
}

.language-option:hover::before {
  left: 100%;
}

.language-option:hover {
  background: var(--color-primary-50);
  color: var(--color-primary-700);
  transform: translateX(var(--space-1));
  box-shadow: var(--shadow-sm);
}

.language-option:focus-visible {
  outline: 2px solid var(--color-primary-600);
  outline-offset: 2px;
}

.language-option.active {
  background: var(--color-primary-100);
  color: var(--color-primary-700);
  font-weight: var(--font-weight-medium);
  border: 1px solid var(--color-primary-300);
}

.language-option.active::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--color-primary-600);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* ===== FLAG ICONS ===== */
.flag-icon {
  font-size: var(--language-selector-flag-size);
  display: inline-block !important;
  visibility: visible !important;
  width: 1.5em;
  text-align: center;
  flex-shrink: 0;
  transition: transform var(--duration-fast) var(--easing-standard);
  opacity: 1 !important;
}

.language-option:hover .flag-icon {
  animation: languageFlagWave 0.6s ease-in-out;
}

.language-option.active .flag-icon {
  filter: brightness(1.1) saturate(1.1);
}

/* ===== LANGUAGE NAMES ===== */
.language-name {
  flex: 1;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

/* ===== CHECK ICONS ===== */
.language-option .bi-check-circle-fill {
  color: var(--color-success-500);
  font-size: var(--font-size-sm);
  animation: languageCheckPulse 1s ease-in-out;
}

/* ===== DROPDOWN DIVIDERS ===== */
.language-dropdown .dropdown-divider {
  margin: var(--space-2) 0;
  border-color: var(--color-outline-variant);
  opacity: 0.5;
}

/* ===== SOPORTE RTL ===== */
.language-option[dir="rtl"] {
  direction: rtl;
  text-align: right;
}

.language-option[dir="rtl"] .flag-icon {
  margin-left: var(--space-2);
  margin-right: 0;
}

.language-option[dir="rtl"].active::after {
  left: auto;
  right: 0;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (min-width: 992px) {
  /* Asegurar que las banderas se vean en PC */
  .flag-icon {
    display: inline-block !important;
    visibility: visible !important;
    font-size: 1.2em;
  }
}

@media (max-width: 991.98px) {
  .language-selector-btn {
    min-width: 100px;
  }

  .language-dropdown {
    min-width: 180px;
  }

  .flag-icon {
    display: inline-block !important;
    visibility: visible !important;
  }
}

@media (max-width: 767.98px) {
  .language-selector-btn {
    min-width: 90px;
    padding: var(--space-2) var(--space-3);
  }

  .language-dropdown {
    max-height: 300px;
    min-width: 160px;
  }

  .language-option {
    padding: var(--space-2) var(--space-3);
  }

  .flag-icon {
    font-size: 1em;
    display: inline-block !important;
    visibility: visible !important;
  }
}

@media (max-width: 576px) {
  .language-selector-btn {
    min-width: 80px;
    gap: var(--space-1);
  }

  .language-dropdown {
    max-height: 250px;
    min-width: 140px;
  }

  .language-option {
    gap: var(--space-2);
  }

  .language-name {
    font-size: var(--font-size-xs);
  }
}

/* ===== EFECTOS HOVER E INTERACTIVOS ===== */
@media (hover: hover) and (pointer: fine) {
  .language-option:hover .flag-icon {
    transform: scale(1.1);
  }

  .language-option:hover .language-name {
    color: var(--color-primary-600);
  }
}

/* ===== OPTIMIZACIONES PERFORMANCE ===== */
.language-selector-btn,
.language-dropdown,
.language-option {
  contain: layout style;
  transform: translateZ(0);
  backface-visibility: hidden;
}

/* ===== PANTALLAS ALTA DENSIDAD ===== */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .flag-icon {
    font-rendering: optimizeLegibility;
    text-rendering: optimizeLegibility;
  }
}

/* ===== TOUCH DEVICES ===== */
@media (pointer: coarse) {
  .language-selector-btn {
    min-height: 44px;
    padding: var(--space-3) var(--space-4);
  }

  .language-option {
    min-height: 44px;
    padding: var(--space-3) var(--space-4);
  }
}

/* ===== ACCESSIBILITY - REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
  .language-selector-btn,
  .language-option,
  .flag-icon {
    animation: none;
    transition: none;
  }

  .language-selector-btn:hover,
  .language-option:hover {
    transform: none;
  }

  .language-dropdown {
    animation: none;
  }

  .language-option:hover .flag-icon {
    animation: none;
    transform: none;
  }

  .language-option .bi-check-circle-fill {
    animation: none;
  }

  /* Alternativas visuales sin animación */
  .language-selector-btn:hover {
    border-width: 3px;
  }

  .language-option:hover {
    border-left: 4px solid var(--color-primary-600);
  }
}

/* ===== MODO CONTRASTE ALTO ===== */
@media (forced-colors: active) {
  .language-selector-btn,
  .language-dropdown,
  .language-option {
    background: Canvas;
    color: CanvasText;
    border: 2px solid ButtonText;
  }

  .language-option.active {
    background: Highlight;
    color: HighlightText;
  }

  .flag-icon {
    filter: none;
  }
}

/* ===== DARK MODE ===== */
[data-bs-theme="dark"] .language-selector-btn {
  background: var(--color-surface-variant);
  border-color: var(--color-outline);
  color: var(--color-on-surface);
}

[data-bs-theme="dark"] .language-selector-btn:hover {
  background: var(--color-primary-200);
  border-color: var(--color-primary-400);
  color: var(--color-primary-800);
}

[data-bs-theme="dark"] .language-dropdown {
  background: var(--color-surface-variant);
  border-color: var(--color-outline);
  box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.3);
}

[data-bs-theme="dark"] .language-option:hover {
  background: var(--color-primary-200);
  color: var(--color-primary-800);
}

[data-bs-theme="dark"] .language-option.active {
  background: var(--color-primary-300);
  color: var(--color-primary-900);
}

/* ===== PRINT STYLES ===== */
@media print {
  .language-selector-btn,
  .language-dropdown {
    display: none !important;
  }
}

/* ===== DEBUGGING ===== */
@media screen and (max-width: 0px) {
  .debug-language-selector::before {
    content: "🌐 Language ELITE";
    position: fixed;
    top: 200px;
    right: 10px;
    background: var(--color-info-500);
    color: var(--color-on-info);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    z-index: var(--z-debug);
    opacity: 0.8;
  }
}

/* ===== PROGRESSIVE ENHANCEMENT ===== */
.js-enabled .language-selector-btn,
.js-enabled .language-dropdown {
  /* Funcionalidades JavaScript habilitadas */
}

.no-js .language-selector-btn {
  pointer-events: none;
  opacity: 0.7;
}

.no-js .language-dropdown {
  display: none;
}

/* ===== INTERSECTION OBSERVER SUPPORT ===== */
.language-selector-btn.aos-animate {
  animation-play-state: running;
}

.language-selector-btn:not(.aos-animate) {
  animation-play-state: paused;
}

/* ===== LOADING STATES ===== */
.language-selector-btn.loading {
  pointer-events: none;
  opacity: 0.7;
}

.language-selector-btn.loading::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 16px;
  margin: -8px 0 0 -8px;
  border: 2px solid var(--color-primary-200);
  border-radius: 50%;
  border-top-color: var(--color-primary-600);
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}