/**
 * Translation UI Styles
 * Styling for translation button, language selector, and translated text display
 * Matches Community platform design system
 */

/* ============================================================================
   Translation Button Container
   ============================================================================ */

.translation-button-container {
  position: relative;
  display: inline-block;
  margin-left: 0.5rem;
}

.translation-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-gray-400);
  border-radius: 6px;
  cursor: pointer;
  transition: all 150ms ease-in-out;
  color: var(--color-gray-600);
}

.translation-button:hover {
  background: var(--color-gray-100);
  border-color: var(--color-primary-400);
  color: var(--color-primary-600);
  transform: translateY(-1px);
}

.translation-button:active {
  transform: translateY(0);
}

.translation-button.active {
  background: var(--color-primary-50);
  border-color: var(--color-primary-500);
  color: var(--color-primary-600);
}

.translation-button.translated {
  background: var(--color-accent-50);
  border-color: var(--color-accent-500);
  color: var(--color-accent-600);
}

.translation-button.loading {
  pointer-events: none;
  opacity: 0.7;
}

/* Translation icon */
.translation-icon {
  width: 16px;
  height: 16px;
  stroke-width: 2;
}

/* Loading spinner */
.translation-spinner {
  width: 16px;
  height: 16px;
  animation: spin 1s linear infinite;
}

.spinner-circle {
  stroke-dasharray: 50;
  stroke-dashoffset: 25;
  animation: dash 1.5s ease-in-out infinite;
}

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

@keyframes dash {
  0% {
    stroke-dashoffset: 50;
  }
  50% {
    stroke-dashoffset: 0;
  }
  100% {
    stroke-dashoffset: -50;
  }
}

/* ============================================================================
   Translation Dropdown
   ============================================================================ */

.translation-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 1000;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: 8px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1),
              0 4px 10px rgba(0, 0, 0, 0.05);
  min-width: 280px;
  max-width: 320px;
  opacity: 1;
  transform: translateY(0);
  transition: opacity 150ms ease, transform 150ms ease;
}

.translation-dropdown.hidden {
  display: none;
  opacity: 0;
  transform: translateY(-8px);
}

/* ============================================================================
   Language Selector
   ============================================================================ */

.language-selector {
  display: flex;
  flex-direction: column;
  max-height: 480px;
}

/* Header */
.language-selector-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  border-bottom: 1px solid var(--color-gray-200);
}

.language-selector-title {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-gray-900);
}

.language-selector-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  color: var(--color-gray-500);
  transition: all 150ms ease;
}

.language-selector-close:hover {
  background: var(--color-gray-100);
  color: var(--color-gray-700);
}

/* Search */
.language-selector-search {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-gray-200);
}

.language-selector-search-input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  border: 1px solid var(--color-gray-400);
  border-radius: 6px;
  outline: none;
  transition: all 150ms ease;
}

.language-selector-search-input:focus {
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px var(--color-primary-50);
}

.language-selector-search-input::placeholder {
  color: var(--color-gray-400);
}

/* Language list */
.language-selector-list {
  flex: 1;
  overflow-y: auto;
  padding: 0.5rem;
  max-height: 300px;
}

/* Scrollbar styling */
.language-selector-list::-webkit-scrollbar {
  width: 6px;
}

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

.language-selector-list::-webkit-scrollbar-thumb {
  background: var(--color-gray-400);
  border-radius: 3px;
}

.language-selector-list::-webkit-scrollbar-thumb:hover {
  background: var(--color-gray-400);
}

/* Language item */
.language-selector-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.625rem 0.75rem;
  background: transparent;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  text-align: left;
  transition: all 150ms ease;
}

.language-selector-item:hover:not([disabled]) {
  background: var(--color-gray-100);
}

.language-selector-item.selected {
  background: var(--color-primary-50);
  cursor: default;
}

.language-selector-item[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
}

.language-flag {
  font-size: 1.5rem;
  line-height: 1;
}

.language-info {
  flex: 1;
}

.language-name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-gray-900);
  line-height: 1.25;
}

.language-native {
  font-size: 0.75rem;
  color: var(--color-gray-600);
  line-height: 1.25;
}

.language-selected-indicator {
  color: var(--color-primary-600);
  font-weight: 600;
}

/* Empty state */
.language-selector-empty {
  padding: 2rem 1rem;
  text-align: center;
  color: var(--color-gray-500);
  font-size: 0.875rem;
}

/* Footer */
.language-selector-footer {
  padding: 1rem;
  border-top: 1px solid var(--color-gray-200);
  background: var(--color-gray-50);
  border-radius: 0 0 8px 8px;
}

.language-selector-toggle-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
}

.toggle-label-text {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-gray-900);
}

.language-selector-help-text {
  margin-top: 0.5rem;
  font-size: 0.75rem;
  color: var(--color-gray-600);
  line-height: 1.4;
}

/* Toggle switch */
.toggle-container {
  position: relative;
  width: 44px;
  height: 24px;
}

.toggle-input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-gray-400);
  border-radius: 12px;
  cursor: pointer;
  transition: all 200ms ease;
  border: 1px solid var(--color-gray-500);
}

.toggle-slider::before {
  content: '';
  position: absolute;
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background: var(--color-white);
  border-radius: 50%;
  transition: all 200ms ease;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.toggle-input:checked + .toggle-slider {
  background: var(--color-primary-500);
}

.toggle-input:checked + .toggle-slider::before {
  transform: translateX(20px);
}

.toggle-input:focus + .toggle-slider {
  box-shadow: 0 0 0 3px var(--color-primary-100);
}

/* ============================================================================
   Translation Display
   ============================================================================ */

.translation-display {
  margin-top: 0.5rem;
  padding: 0.75rem;
  background: var(--color-accent-50);
  border: 1px solid var(--color-accent-200);
  border-radius: 8px;
  animation: fadeIn 200ms ease-in-out;
}

.translation-display.hidden {
  display: none;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Translation header */
.translation-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.translation-badge {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent-700);
}

.translation-flag {
  font-size: 1rem;
  line-height: 1;
}

.translation-label {
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.translation-cached-indicator {
  font-size: 0.875rem;
  opacity: 0.8;
}

.translation-toggle-btn {
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-accent-700);
  background: transparent;
  border: 1px solid var(--color-accent-300);
  border-radius: 4px;
  cursor: pointer;
  transition: all 150ms ease;
}

.translation-toggle-btn:hover {
  background: var(--color-accent-100);
  border-color: var(--color-accent-400);
}

/* Translation content */
.translation-content {
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--color-gray-800);
  font-style: italic;
  white-space: pre-wrap;
  word-wrap: break-word;
}

/* ============================================================================
   Mobile Responsiveness
   ============================================================================ */

@media (max-width: 640px) {
  .translation-dropdown {
    position: fixed;
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    max-width: 100%;
    border-radius: 16px 16px 0 0;
    animation: slideUp 200ms ease-out;
  }

  @keyframes slideUp {
    from {
      transform: translateY(100%);
    }
    to {
      transform: translateY(0);
    }
  }

  .translation-button {
    /* Always visible on mobile (no hover needed) */
    background: var(--color-gray-50);
  }

  .language-selector {
    max-height: 60vh;
  }

  .language-selector-list {
    max-height: calc(60vh - 200px);
  }

  /* Larger touch targets */
  .translation-button,
  .language-selector-item,
  .translation-toggle-btn {
    min-height: 44px;
  }

  .language-selector-search-input {
    font-size: 16px; /* Prevent zoom on iOS */
  }
}

/* ============================================================================
   Accessibility
   ============================================================================ */

/* Focus styles */
.translation-button:focus-visible,
.language-selector-close:focus-visible,
.language-selector-item:focus-visible,
.translation-toggle-btn:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  .translation-button,
  .translation-dropdown,
  .language-selector-item,
  .translation-display,
  .toggle-slider,
  .toggle-slider::before {
    animation: none;
    transition: none;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .translation-button,
  .language-selector-item,
  .translation-display {
    border-width: 2px;
  }
}

/* ============================================================================
   Dark Mode (Optional - Future Enhancement)
   ============================================================================ */

@media (prefers-color-scheme: dark) {
  .translation-dropdown {
    background: var(--color-gray-800);
    border-color: var(--color-gray-700);
  }

  .language-selector-header,
  .language-selector-search,
  .language-selector-footer {
    border-color: var(--color-gray-700);
  }

  .language-selector-title,
  .language-name {
    color: var(--color-gray-100);
  }

  .language-native {
    color: var(--color-gray-400);
  }

  .language-selector-search-input {
    background: var(--color-gray-700);
    border-color: var(--color-gray-600);
    color: var(--color-gray-100);
  }

  .language-selector-item:hover:not([disabled]) {
    background: var(--color-gray-700);
  }

  .language-selector-item.selected {
    background: var(--color-primary-900);
  }

  .language-selector-footer {
    background: var(--color-gray-900);
  }

  .translation-display {
    background: var(--color-gray-800);
    border-color: var(--color-gray-700);
  }

  .translation-content {
    color: var(--color-gray-200);
  }
}

/* ============================================================================
   Integration with Chat Messages
   ============================================================================ */

/* Position translation button next to reactions */
.message-reactions + .translation-button-container,
.message-content > .translation-button-container {
  margin-left: 0.5rem;
}

/* Ensure translation button aligns with message content */
.message-content {
  position: relative;
}

/* Add subtle hover effect to show translation button */
.message:hover .translation-button {
  opacity: 1;
}

/* Hide translation button by default on desktop (show on hover) */
@media (min-width: 641px) {
  .translation-button {
    opacity: 0.5;
    transition: opacity 200ms ease;
  }

  .translation-button:hover,
  .translation-button.active,
  .translation-button.translated {
    opacity: 1;
  }
}