/* Conversations Page Styles - Dark Theme */

/* Hidden Messages Container */
.hidden-messages-container {
  display: none;
}

.conversation-container {
  min-height: 100vh;
  background: var(--dark-bg);
  color: var(--dark-text-primary);
}

.conversation-header {
  background: var(--dark-bg);
  border-bottom: 1px solid var(--dark-border);
  padding: var(--spacing-md) 0;
  margin-bottom: 0;
}

.conversation-header-nav {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.language-info {
  flex: 1;
}

.current-language {
  font-size: clamp(1.25rem, 2.5vw + 0.5rem, 1.75rem);
  font-weight: 600;
  color: var(--dark-text-primary);
  margin: 0 0 var(--spacing-xs) 0;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  line-height: 1.2;
}

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

.conversation-actions {
  display: flex;
  gap: var(--spacing-sm);
}


.conversation-status {
  text-align: center;
  padding: var(--spacing-xl) 0;
  background: var(--dark-card-bg);
  border-radius: var(--border-radius-lg);
  margin-bottom: var(--spacing-xl);
  border: 1px solid var(--dark-border);
}

.status-text {
  font-size: clamp(1.25rem, 2.5vw + 0.5rem, 1.5rem);
  font-weight: 600;
  color: var(--dark-text-primary);
  margin: 0 0 var(--spacing-sm) 0;
  line-height: 1.3;
}

.instruction-text {
  font-size: 1rem;
  color: var(--dark-text-secondary);
  margin: 0;
}

/* Messages Container */
.messages-container {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-md) 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  background: var(--dark-card-bg);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--dark-border);
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-lg);
}

/* Message Bubbles */
.message {
  display: flex;
  max-width: 80%;
  margin-bottom: var(--spacing-sm);
}

.user-message {
  align-self: flex-end;
  margin-left: auto;
}

.assistant-message {
  align-self: flex-start;
  margin-right: auto;
}

.message-content {
  padding: clamp(var(--spacing-sm), 3vw, var(--spacing-md)) clamp(var(--spacing-md), 4vw, var(--spacing-lg));
  border-radius: var(--border-radius-md);
  position: relative;
  word-wrap: break-word;
  line-height: 1.5;
}

.user-message .message-content {
  background: var(--brand-2);
  color: #2D3748;
  border-bottom-right-radius: 6px;
}

.assistant-message .message-content {
  background: var(--dark-hover);
  color: var(--dark-text-primary);
  border-bottom-left-radius: 6px;
}

.message-content p {
  margin: 0;
  font-size: clamp(0.9rem, 2vw + 0.5rem, 1rem);
  line-height: clamp(1.4, 1.5, 1.6);
}

.message-time {
  display: block;
  font-size: 0.75rem;
  margin-top: var(--spacing-xs);
  opacity: 0.7;
}

.user-message .message-time {
  color: rgba(45, 55, 72, 0.7);
}

.assistant-message .message-time {
  color: var(--dark-text-secondary);
}

/* Audio Controls */
.audio-controls {
  margin-top: var(--spacing-xs);
  padding-top: var(--spacing-xs);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.user-message .audio-controls {
  border-top-color: rgba(45, 55, 72, 0.2);
}

.assistant-message .audio-controls {
  border-top-color: var(--dark-border);
}

.audio-controls audio {
  width: 100%;
  max-width: 300px;
  height: clamp(36px, 6vw, 44px);
  background: transparent;
}

.record-section {
  text-align: center;
  padding: var(--spacing-lg) 0;
  background: var(--dark-card-bg);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--dark-border);
}

.record-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 160px;
  height: 160px;
  background: var(--brand-2);
  border: none;
  border-radius: 50%;
  color: #2D3748;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 8px 20px rgba(154, 215, 243, 0.3);
  margin: 0 auto;
  font-weight: 600;
}

.record-btn:hover {
  background: var(--dark-accent-light-blue);
  transform: scale(1.05);
  box-shadow: 0 12px 30px rgba(154, 215, 243, 0.4);
}

.record-btn:active {
  transform: scale(0.95);
}

.record-btn.recording {
  background: var(--brand-1);
  color: #2D3748;
}

.record-text {
  font-size: 1rem;
  font-weight: 600;
}


/* Button styles specific to conversations */
.conversation-header .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: clamp(var(--spacing-xs), 2vw, var(--spacing-sm)) clamp(var(--spacing-sm), 3vw, var(--spacing-md));
  border: 1px solid var(--dark-border);
  border-radius: var(--border-radius-md);
  font-size: clamp(0.8rem, 1.5vw + 0.5rem, 0.875rem);
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
  min-height: 44px;
  min-width: 44px;
}

.conversation-header .btn-secondary {
  background: var(--dark-card-bg);
  color: var(--dark-text-secondary);
}

.conversation-header .btn-secondary:hover {
  background: var(--dark-hover);
  color: var(--dark-text-primary);
  transform: translateY(-1px);
}

/* Animations */

/* Corrections Styles */
.corrections {
  margin-top: var(--spacing-sm);
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--dark-border);
}

.corrections-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--brand-3);
  margin: 0 0 var(--spacing-xs) 0;
}

.correction-item {
  margin-bottom: var(--spacing-xs);
  padding: var(--spacing-xs);
  background: rgba(148, 239, 213, 0.1);
  border-radius: var(--border-radius-md);
  border: 1.35px solid;
  border-image-source: linear-gradient(155deg, var(--brand-3) 2%, rgba(148, 239, 213, 0.0001) 40%, rgba(148, 239, 213, 0.0001) 55%, rgba(148, 239, 213, 0.4) 95%);
}

.correction-item:last-child {
  margin-bottom: 0;
}

.correction-original {
  font-size: 0.85rem;
  color: var(--brand-1);
  margin: 0 0 4px 0;
  font-weight: 500;
}

.correction-corrected {
  font-size: 0.85rem;
  color: var(--brand-3);
  margin: 0 0 4px 0;
  font-weight: 500;
}

.correction-explanation {
  font-size: 0.8rem;
  color: var(--dark-text-secondary);
  margin: 0;
  font-style: italic;
}

/* Thinking Animation */
.thinking-message .message-content {
  opacity: 0.8;
}

.thinking-text {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-style: italic;
  color: var(--dark-text-secondary);
}

.thinking-dots {
  display: inline-flex;
  gap: 2px;
}

.thinking-dots span {
  animation: thinking-bounce 1.4s infinite;
  animation-fill-mode: both;
}

.thinking-dots span:nth-child(1) {
  animation-delay: 0s;
}

.thinking-dots span:nth-child(2) {
  animation-delay: 0.2s;
}

.thinking-dots span:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes thinking-bounce {
  0%, 80%, 100% {
    transform: scale(1);
    opacity: 0.5;
  }
  40% {
    transform: scale(1.2);
    opacity: 1;
  }
}

/* TTS Audio Controls */
.tts-audio-controls {
  margin-top: var(--spacing-xs);
  padding-top: var(--spacing-xs);
  border-top: 1px solid var(--dark-border);
}

.tts-audio {
  width: 100%;
  max-width: 300px;
  height: 32px;
}

.assistant-message .tts-audio-controls {
  border-top-color: var(--dark-border);
}

/* Unified Layout for All Screen Sizes */
.conversation-main {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 80px);
  justify-content: space-between;
  padding: var(--spacing-lg) 0;
  max-width: 1400px;
  margin: 0 auto;
}

/* Latest Message Display */
.latest-message {
  flex: 0 0 auto;
  padding: 0 var(--spacing-md);
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.message-bubble {
  width: 100%;
  display: flex;
  justify-content: center;
}

.message-bubble.user-message {
  justify-content: flex-end;
}

.message-bubble.assistant-message {
  justify-content: flex-start;
}

.message-bubble-content {
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  max-width: 85%;
  word-wrap: break-word;
  line-height: 1.5;
}

.message-bubble.user-message .message-bubble-content {
  background: var(--brand-2);
  color: #2D3748;
}

.message-bubble.assistant-message .message-bubble-content {
  background: var(--dark-hover);
  color: var(--dark-text-primary);
}

.message-bubble-content p {
  margin: 0 0 var(--spacing-xs) 0;
  font-size: 1rem;
  line-height: 1.5;
}

.message-bubble-time {
  font-size: 0.75rem;
  opacity: 0.7;
}

.message-bubble-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--spacing-xs);
}

.message-clickable {
  transition: all 0.2s ease;
  user-select: none;
}

.message-clickable:hover {
  transform: scale(1.02);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.message-clickable:active {
  transform: scale(0.98);
}

.audio-indicator {
  font-size: 0.8rem;
  opacity: 0.6;
  animation: pulse-audio 2s infinite;
}

@keyframes pulse-audio {
  0%, 100% { 
    opacity: 0.6;
    transform: scale(1);
  }
  50% { 
    opacity: 0.9;
    transform: scale(1.1);
  }
}

.conversation-status {
  text-align: center;
  padding: var(--spacing-lg);
  background: var(--dark-card-bg);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--dark-border);
  margin: 0 var(--spacing-md);
}

.status-text {
  font-size: clamp(1.25rem, 2.5vw + 0.5rem, 1.5rem);
  font-weight: 600;
  color: var(--dark-text-primary);
  margin: 0 0 var(--spacing-sm) 0;
  line-height: 1.3;
}

.instruction-text {
  font-size: 1rem;
  color: var(--dark-text-secondary);
  margin: 0;
}

/* Speak Section */
.speak-section {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl) 0;
}

.speak-btn {
  width: 200px;
  height: 200px;
  border: none;
  background: transparent;
  cursor: pointer;
  padding: 0;
  margin: 0 0 var(--spacing-lg) 0;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.speak-indicator {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: all 0.3s ease;
}

.speak-indicator-inner {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  background: var(--brand-2);
  transition: all 0.3s ease;
  box-shadow: 
    0 4px 16px rgba(154, 215, 243, 0.4),
    inset 0 2px 4px rgba(255, 255, 255, 0.2);
}

/* Speaking States - Animate surrounding light directly on the inner circle */
.speak-btn.ai-speaking .speak-indicator-inner,
.speak-btn.ai-speaking:hover .speak-indicator-inner {
  animation: pulse-ai 2s infinite !important;
}

.speak-btn.user-speaking .speak-indicator-inner,
.speak-btn.user-speaking:hover .speak-indicator-inner {
  animation: pulse-user 1.5s infinite !important;
}

.speak-btn.listening .speak-indicator-inner,
.speak-btn.listening:hover .speak-indicator-inner {
  animation: pulse-listening 1s infinite !important;
}

@keyframes pulse-ai {
  0%, 100% { 
    box-shadow: 
      0 0 0 4px rgba(16, 185, 129, 0.8),
      0 0 0 12px rgba(16, 185, 129, 0.3),
      0 4px 16px rgba(154, 215, 243, 0.4),
      inset 0 2px 4px rgba(255, 255, 255, 0.2);
  }
  50% { 
    box-shadow: 
      0 0 0 8px rgba(16, 185, 129, 1),
      0 0 0 20px rgba(16, 185, 129, 0.1),
      0 4px 16px rgba(154, 215, 243, 0.4),
      inset 0 2px 4px rgba(255, 255, 255, 0.2);
  }
}

@keyframes pulse-user {
  0%, 100% { 
    box-shadow: 
      0 0 0 4px rgba(245, 101, 101, 0.8),
      0 0 0 12px rgba(245, 101, 101, 0.3),
      0 4px 16px rgba(154, 215, 243, 0.4),
      inset 0 2px 4px rgba(255, 255, 255, 0.2);
  }
  50% { 
    box-shadow: 
      0 0 0 8px rgba(245, 101, 101, 1),
      0 0 0 20px rgba(245, 101, 101, 0.1),
      0 4px 16px rgba(154, 215, 243, 0.4),
      inset 0 2px 4px rgba(255, 255, 255, 0.2);
  }
}

@keyframes pulse-listening {
  0%, 100% { 
    box-shadow: 
      0 0 0 4px rgba(159, 122, 234, 0.8),
      0 0 0 12px rgba(159, 122, 234, 0.3),
      0 4px 16px rgba(154, 215, 243, 0.4),
      inset 0 2px 4px rgba(255, 255, 255, 0.2);
  }
  50% { 
    box-shadow: 
      0 0 0 8px rgba(159, 122, 234, 1),
      0 0 0 20px rgba(159, 122, 234, 0.1),
      0 4px 16px rgba(154, 215, 243, 0.4),
      inset 0 2px 4px rgba(255, 255, 255, 0.2);
  }
}

.speak-status {
  text-align: center;
}

.speak-status span {
  font-size: 1rem;
  color: var(--dark-text-secondary);
  font-weight: 500;
}

/* Corrections Section */
.corrections-section {
  flex: 0 0 auto;
  padding: 0 var(--spacing-md) var(--spacing-md);
  min-height: 120px;
}

.mistakes-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.mistakes-title {
  font-size: clamp(1.5rem, 3vw + 0.5rem, 1.75rem);
  font-weight: 600;
  color: var(--dark-text-primary);
  margin: 0 0 var(--spacing-xs) 0;
}

.mistakes-subtitle {
  font-size: 1rem;
  color: var(--dark-text-secondary);
  margin: 0;
  opacity: 0.8;
}

.corrections-grid {
  display: flex;
  gap: var(--spacing-md);
  overflow-x: auto;
  padding: var(--spacing-sm) 0;
  -webkit-overflow-scrolling: touch;
}

/* Mistake Cards - clean rounded design */
.mistake-card {
  flex: 0 0 auto;
  background: var(--dark-hover);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-lg) var(--spacing-md);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-start;
  text-align: left;
  gap: var(--spacing-md);
  min-width: 160px;
  min-height: 120px;
  transition: all 0.2s ease;
  border: 1px solid var(--dark-border);
}

.mistake-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  border-color: rgba(255, 255, 255, 0.1);
}

.mistake-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.mistake-word {
  font-size: 28px;
  font-family: 'Lato';
  font-weight: 700;
  color: var(--dark-text-primary);
  line-height: 100%;
}

.mistake-description {
  font-size: 16px;
  font-family: 'Lato';
  color: var(--dark-text-secondary);
  opacity: 0.8;
  line-height: 100%;
}

.explain-btn {
  background: var(--brand-2);
  color: black;
  font-weight: 500;
  font-size: 0.9rem;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: 20px;
  align-self: flex-end;
  justify-content: center;
}

.explain-btn:hover {
  background: var(--dark-accent-light-blue);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(154, 215, 243, 0.3);
}

/* Explanation Modal */
.explanation-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
}

.explanation-modal.show {
  display: flex !important;
}

.explanation-modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(4px);
}

.explanation-modal-content {
  position: relative;
  background: var(--dark-card-bg);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--dark-border);
  max-width: 600px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  padding: var(--spacing-xl);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.explanation-modal-header {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  margin-bottom: var(--spacing-xs);
}

.explanation-close-btn {
  cursor: pointer;
  width: 32px;
  height: 32px;
}

.explanation-modal-body {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.explanation-correction-section {
  display: flex;
  flex-direction: column;
}

.correction-sentence {
  font-size: 16px;
  color: var(--dark-text-primary);
  line-height: 1.5;
  display: flex;
  flex-direction: column;
}

.correction-original-text,
.correction-corrected-text {
  display: inline;
}

.correction-static-text {
  color: var(--dark-text-secondary);
}

.explanation-label {
  font-size: 20px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--dark-text-secondary);
}

.explanation-detail-section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.explanation-text {
  font-size: 16px;
  color: var(--dark-text-primary);
  line-height: 1.5;
}

.explanation-actions {
  display: flex;
  justify-content: center;
  padding-top: var(--spacing-sm);
}

.explanation-got-it-btn {
  background: var(--brand-2);
  width: 100%;
}

.explanation-got-it-btn:hover {
  background: var(--dark-accent-light-blue);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(154, 215, 243, 0.3);
}

.explanation-got-it-btn:active {
  transform: translateY(0);
}

/* Highlighting styles for changed text */
.text-changed {
  background: rgba(245, 101, 101, 0.3);
  border-radius: 3px;
  padding: 1px 3px;
  text-decoration: line-through;
  text-decoration-color: rgba(245, 101, 101, 0.8);
}

.text-correct {
  background: rgba(16, 185, 129, 0.3);
  border-radius: 3px;
  padding: 1px 3px;
  font-weight: 600;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .conversation-main {
    padding: var(--spacing-lg) var(--spacing-sm);
  }
}

@media (max-width: 768px) {
  .conversation-header-nav {
    padding: 0 var(--spacing-sm);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
  }
  
  .conversation-main {
    padding: 0;
    height: calc(100vh - 80px);
  }
  
  .conversation-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    min-width: 0;
  }
  
  .conversation-header .btn {
    flex: 1;
    min-width: 120px;
  }

  .speak-btn {
    width: clamp(160px, 40vw, 180px);
    height: clamp(160px, 40vw, 180px);
  }

  .speak-indicator-inner {
    width: clamp(120px, 30vw, 135px);
    height: clamp(120px, 30vw, 135px);
  }

  .message-bubble-content {
    max-width: 90%;
  }

  .mistake-card {
    min-width: 140px;
    min-height: 100px;
    padding: var(--spacing-md) var(--spacing-sm);
  }

  .mistake-word {
    font-size: 1.1rem;
  }

  .mistake-description {
    font-size: 0.8rem;
  }
}