/* Enhanced Language Selector Styles with Comprehensive RTL Support and Accessibility */

/* CSS Variables for Language Selector */
:root {
  /* Language Selector Colors */
  --language-selector-bg: var(--color-bg-secondary, #f8fafc);
  --language-selector-bg-hover: var(--color-bg-hover, #f1f5f9);
  --language-selector-border: var(--color-border, #e2e8f0);
  --language-selector-border-focus: var(--color-border-focus, #3b82f6);
  --language-selector-text: var(--color-text-primary, #0f172a);
  --language-selector-text-secondary: var(--color-text-secondary, #64748b);
  --language-selector-shadow: var(--shadow-lg, 0 10px 15px -3px rgba(0, 0, 0, 0.1));
  
  /* Dark mode overrides */
  --language-selector-bg-dark: var(--color-bg-secondary-dark, #1e293b);
  --language-selector-bg-hover-dark: var(--color-bg-hover-dark, #334155);
  --language-selector-border-dark: var(--color-border-dark, #475569);
  --language-selector-text-dark: var(--color-text-primary-dark, #f8fafc);
  
  /* Dimensions */
  --language-selector-button-height: 40px;
  --language-selector-dropdown-width: 240px;
  --language-selector-option-height: 48px;
  --language-selector-border-radius: var(--radius-lg, 8px);
  
  /* Animation */
  --language-selector-transition: all 0.2s cubic-bezier(0.4, 0.0, 0.2, 1);
  --language-selector-transition-fast: all 0.15s ease-out;
}

/* Base Language Selector Container */
.language-selector {
  position: relative;
  display: inline-block;
  font-family: var(--font-family, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif);
  z-index: 1000;
}

/* Language Selector Button */
.language-selector-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: var(--language-selector-button-height);
  padding: 0 12px;
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  color: var(--language-selector-text);
  background-color: var(--language-selector-bg);
  border: 1px solid var(--language-selector-border);
  border-radius: var(--language-selector-border-radius);
  cursor: pointer;
  transition: var(--language-selector-transition);
  white-space: nowrap;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  min-width: 100px;
  max-width: 160px;
}

/* Button States */
.language-selector-button:hover:not(:disabled) {
  background-color: var(--language-selector-bg-hover);
  border-color: var(--language-selector-border-focus);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.language-selector-button:focus-visible {
  outline: 2px solid var(--language-selector-border-focus);
  outline-offset: 2px;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.language-selector-button:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.language-selector-button.open {
  background-color: var(--language-selector-bg-hover);
  border-color: var(--language-selector-border-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.language-selector-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

.language-selector-button.loading {
  opacity: 0.8;
  cursor: wait;
}

/* Touch feedback for mobile */
.language-selector-button.touch-active {
  background-color: var(--language-selector-bg-hover);
  transform: scale(0.98);
}

/* Button Content */
.current-language-flag {
  font-size: 16px;
  line-height: 1;
  flex-shrink: 0;
}

.current-language-name {
  font-weight: 500;
  text-overflow: ellipsis;
  overflow: hidden;
  flex: 1;
  min-width: 0;
}

.language-arrow {
  flex-shrink: 0;
  transition: var(--language-selector-transition-fast);
  opacity: 0.7;
}

.language-selector-button.open .language-arrow {
  transform: rotate(180deg);
}

/* Loading Spinner */
.loading-spinner {
  display: none;
  flex-shrink: 0;
}

.loading-spinner .loading-icon {
  animation: spin 1s linear infinite;
  opacity: 0.7;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Language Dropdown */
.language-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: var(--language-selector-dropdown-width);
  max-width: 320px;
  max-height: 300px;
  background: white;
  border: 1px solid var(--language-selector-border);
  border-radius: var(--language-selector-border-radius);
  box-shadow: var(--language-selector-shadow);
  overflow: hidden;
  transform: translateY(-10px);
  opacity: 0;
  visibility: hidden;
  transition: var(--language-selector-transition);
  z-index: 1001;
}

.language-dropdown.open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

/* Dropdown Header */
.language-dropdown-header {
  padding: 12px 16px 8px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--language-selector-text-secondary);
  background-color: rgba(248, 250, 252, 0.8);
  border-bottom: 1px solid rgba(226, 232, 240, 0.5);
}

/* Language Options Container */
.language-options {
  padding: 4px 0;
  max-height: 240px;
  overflow-y: auto;
  overscroll-behavior: contain;
}

/* Individual Language Option */
.language-option {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  font-size: 14px;
  color: var(--language-selector-text);
  cursor: pointer;
  transition: var(--language-selector-transition-fast);
  position: relative;
  min-height: var(--language-selector-option-height);
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.language-option:hover,
.language-option.focused {
  background-color: rgba(59, 130, 246, 0.08);
  color: var(--language-selector-border-focus);
}

.language-option:focus-visible {
  outline: 2px solid var(--language-selector-border-focus);
  outline-offset: -2px;
  background-color: rgba(59, 130, 246, 0.1);
}

.language-option:active {
  background-color: rgba(59, 130, 246, 0.15);
}

.language-option[aria-selected="true"],
.language-option.selected {
  background-color: rgba(59, 130, 246, 0.1);
  color: var(--language-selector-border-focus);
  font-weight: 600;
}

/* Language Option Content */
.language-flag {
  font-size: 18px;
  line-height: 1;
  flex-shrink: 0;
  width: 24px;
  text-align: center;
}

.language-name {
  flex: 1;
  font-weight: 500;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.language-check {
  font-size: 14px;
  font-weight: 600;
  color: var(--language-selector-border-focus);
  flex-shrink: 0;
  opacity: 0.8;
}

/* RTL Language Support */
[dir="rtl"] .language-selector {
  direction: rtl;
}

[dir="rtl"] .language-selector-button {
  flex-direction: row-reverse;
  text-align: right;
}

[dir="rtl"] .language-dropdown {
  right: auto;
  left: 0;
}

[dir="rtl"] .language-option {
  flex-direction: row-reverse;
  text-align: right;
}

[dir="rtl"] .language-dropdown-header {
  text-align: right;
}

/* RTL Language-Specific Typography */
.language-selector.rtl-context,
.language-selector[data-rtl="true"] {
  direction: rtl;
}

.language-selector.rtl-context .language-dropdown {
  right: auto;
  left: 0;
}

.language-selector.rtl-context .language-option {
  text-align: right;
}

/* Language Change Feedback */
.language-change-feedback {
  position: absolute;
  top: -40px;
  right: 0;
  padding: 8px 12px;
  background: rgba(34, 197, 94, 0.9);
  color: white;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  transform: translateY(10px);
  opacity: 0;
  visibility: hidden;
  transition: var(--language-selector-transition);
  z-index: 1002;
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 12px rgba(34, 197, 94, 0.3);
}

.language-change-feedback.show {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.language-change-feedback.error {
  background: rgba(239, 68, 68, 0.9);
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

[dir="rtl"] .language-change-feedback {
  right: auto;
  left: 0;
}

/* Mobile Optimizations */
@media (max-width: 768px) {
  .language-selector {
    position: relative;
  }
  
  .language-selector-button {
    min-width: 80px;
    max-width: 120px;
    height: 36px;
    padding: 0 10px;
    font-size: 13px;
  }
  
  .language-dropdown {
    min-width: 200px;
    max-width: calc(100vw - 32px);
    right: 0;
    left: auto;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  }
  
  .language-dropdown.mobile-optimized {
    position: fixed;
    top: auto;
    bottom: 16px;
    right: 16px;
    left: 16px;
    max-height: 60vh;
    border-radius: 12px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  }
  
  .language-option {
    padding: 16px;
    min-height: 56px;
    font-size: 15px;
  }
  
  .language-flag {
    font-size: 20px;
    width: 28px;
  }
  
  .current-language-name {
    display: none;
  }
  
  .language-change-feedback {
    position: fixed;
    top: 16px;
    right: 16px;
    left: 16px;
    text-align: center;
    z-index: 1003;
  }
}

@media (max-width: 480px) {
  .language-selector-button {
    min-width: 44px;
    max-width: 44px;
    padding: 0 8px;
  }
  
  .current-language-flag {
    font-size: 18px;
  }
  
  .language-dropdown {
    min-width: 180px;
  }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  .language-selector-button {
    border-width: 2px;
  }
  
  .language-option:hover,
  .language-option.focused {
    background-color: rgba(0, 0, 0, 0.1);
    outline: 2px solid currentColor;
  }
  
  .language-option[aria-selected="true"] {
    background-color: rgba(0, 0, 0, 0.15);
    outline: 2px solid currentColor;
  }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  .language-selector-button,
  .language-dropdown,
  .language-option,
  .language-arrow,
  .loading-spinner .loading-icon,
  .language-change-feedback {
    transition: none;
    animation: none;
  }
  
  .language-selector-button:hover {
    transform: none;
  }
  
  .language-selector-button.touch-active {
    transform: none;
  }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  .language-selector-button {
    background-color: var(--language-selector-bg-dark);
    border-color: var(--language-selector-border-dark);
    color: var(--language-selector-text-dark);
  }
  
  .language-selector-button:hover:not(:disabled) {
    background-color: var(--language-selector-bg-hover-dark);
  }
  
  .language-dropdown {
    background: var(--language-selector-bg-dark);
    border-color: var(--language-selector-border-dark);
  }
  
  .language-dropdown-header {
    background-color: rgba(30, 41, 59, 0.8);
    border-bottom-color: rgba(71, 85, 105, 0.5);
  }
  
  .language-option {
    color: var(--language-selector-text-dark);
  }
  
  .language-option:hover,
  .language-option.focused {
    background-color: rgba(59, 130, 246, 0.15);
  }
  
  .language-option[aria-selected="true"] {
    background-color: rgba(59, 130, 246, 0.2);
  }
}

/* Custom dark mode class support */
.dark .language-selector-button {
  background-color: var(--language-selector-bg-dark);
  border-color: var(--language-selector-border-dark);
  color: var(--language-selector-text-dark);
}

.dark .language-selector-button:hover:not(:disabled) {
  background-color: var(--language-selector-bg-hover-dark);
}

.dark .language-dropdown {
  background: var(--language-selector-bg-dark);
  border-color: var(--language-selector-border-dark);
}

.dark .language-option {
  color: var(--language-selector-text-dark);
}

/* Fallback Language Selector (when main fails) */
.language-selector-minimal .language-selector-button {
  background: #f3f4f6;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 13px;
  cursor: pointer;
}

.language-selector-fallback {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

/* Language Modal (fallback) */
.language-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  backdrop-filter: blur(4px);
}

.language-modal-content {
  background: white;
  border-radius: 12px;
  padding: 24px;
  max-width: 320px;
  width: calc(100vw - 32px);
  max-height: calc(100vh - 32px);
  overflow-y: auto;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.language-modal-content h3 {
  margin: 0 0 16px 0;
  font-size: 18px;
  font-weight: 600;
  text-align: center;
}

.language-modal-options {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
}

.language-modal-option {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s ease;
  font-size: 14px;
}

.language-modal-option:hover {
  background: #e2e8f0;
  border-color: #3b82f6;
}

.language-modal-close {
  width: 100%;
  padding: 12px;
  background: #6b7280;
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
}

.language-modal-close:hover {
  background: #4b5563;
}

/* Print Styles */
@media print {
  .language-selector {
    display: none;
  }
}

/* Focus Ring Customization for Different Browsers */
.language-selector-button:focus-visible,
.language-option:focus-visible {
  outline: 2px solid var(--language-selector-border-focus);
  outline-offset: 2px;
}

/* Safari focus ring fallback */
.language-selector-button:focus:not(:focus-visible),
.language-option:focus:not(:focus-visible) {
  outline: none;
}

/* Custom scrollbar for dropdown */
.language-options::-webkit-scrollbar {
  width: 6px;
}

.language-options::-webkit-scrollbar-track {
  background: transparent;
}

.language-options::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 3px;
}

.language-options::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 0, 0, 0.3);
}

/* Firefox scrollbar */
.language-options {
  scrollbar-width: thin;
  scrollbar-color: rgba(0, 0, 0, 0.2) transparent;
}

/* Animation for dropdown appearance */
@keyframes dropdownSlideIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes dropdownSlideOut {
  from {
    opacity: 1;
    transform: translateY(0);
  }
  to {
    opacity: 0;
    transform: translateY(-10px);
  }
}

.language-dropdown.open {
  animation: dropdownSlideIn 0.15s ease-out;
}

.language-dropdown:not(.open) {
  animation: dropdownSlideOut 0.15s ease-in;
}

/* Ensure proper stacking in complex layouts */
.language-selector {
  isolation: isolate;
}

/* Additional mobile touch improvements */
@media (pointer: coarse) {
  .language-selector-button {
    min-height: 44px;
  }
  
  .language-option {
    min-height: 48px;
    padding: 14px 16px;
  }
}