/* Chat Container */
.chat-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  margin: var(--spacing-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-subtle);
  height: calc(100dvh - 120px); /* Account for header and margins */
  min-height: 0; /* Prevent flex overflow */
}

.chat-header {
  background: var(--bg-secondary);
  padding: var(--spacing-lg) var(--spacing-xl);
  border-bottom: 1px solid var(--border-subtle);
}

.chat-title h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.chat-title p {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* Chat Messages */
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  scroll-behavior: smooth;
}

.chat-messages::-webkit-scrollbar {
  width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
}

.chat-messages::-webkit-scrollbar-thumb {
  background: var(--border-subtle);
  border-radius: var(--radius-sm);
}

.chat-messages::-webkit-scrollbar-thumb:hover {
  background: var(--border-hover);
}

/* Message Styles */
.message {
  display: flex;
  gap: var(--spacing-md);
  animation: slideInUp 0.3s ease-out;
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.message-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  overflow: hidden;
  flex-shrink: 0;
  border: 2px solid var(--border-subtle);
}

.message-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.message-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.message-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.message-author {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-primary);
}

.message-time {
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

.message-text {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--text-primary);
  white-space: pre-wrap;
  word-break: break-word;
}

/* Message Types */
.luna-message .message-author {
  color: var(--accent-primary);
}

.user-message {
  flex-direction: row-reverse;
}

.user-message .message-content {
  align-items: flex-end;
}

.user-message .message-text {
  background: var(--bg-card);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  max-width: 70%;
}

.luna-message .message-text {
  background: var(--bg-secondary);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  max-width: 70%;
  border-left: 3px solid var(--accent-primary);
}

/* Chat Input */
.chat-input-container {
  background: var(--bg-secondary);
  padding: var(--spacing-lg) var(--spacing-xl);
  border-top: 1px solid var(--border-subtle);
}

.chat-input-wrapper {
  position: relative;
  display: flex;
  align-items: flex-end;
  gap: var(--spacing-sm);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--spacing-sm);
  transition: var(--transition-normal);
}

.chat-input-wrapper:focus-within {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

#chat-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 0.875rem;
  font-family: inherit;
  resize: none;
  min-height: 2.5rem;
  max-height: 120px;
  padding: var(--spacing-sm);
  line-height: 1.5;
}

#chat-input:focus {
  outline: none;
}

#chat-input::placeholder {
  color: var(--text-tertiary);
}

.input-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  flex-shrink: 0;
}

/* Typing Indicator */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  align-self: flex-start;
  margin-left: 52px;
}

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

.typing-dot {
  width: 6px;
  height: 6px;
  background: var(--text-tertiary);
  border-radius: 50%;
  animation: typing 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(1) { animation-delay: -0.32s; }
.typing-dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes typing {
  0%, 80%, 100% {
    transform: scale(0.8);
    opacity: 0.5;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
}

/* Empty State */
.empty-chat {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-tertiary);
  text-align: center;
  padding: var(--spacing-xl);
}

.empty-chat-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.5;
}

.empty-chat h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-secondary);
}

.empty-chat p {
  font-size: 0.875rem;
  max-width: 300px;
  line-height: 1.6;
}

/* Message Actions */
.message-actions {
  display: flex;
  gap: var(--spacing-xs);
  opacity: 0;
  transition: var(--transition-fast);
  margin-top: var(--spacing-xs);
}

/* Feedback Buttons */
.feedback-buttons {
  display: flex;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-xs);
  align-items: center;
}

.feedback-btn {
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-tertiary);
  font-size: 0.75rem;
  cursor: pointer;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.feedback-btn:hover {
  background: var(--bg-hover);
  border-color: var(--border-hover);
  color: var(--text-primary);
}

.feedback-btn.active {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: white;
}

.feedback-btn.thumbs-up.active {
  background: var(--success);
  border-color: var(--success);
}

.feedback-btn.thumbs-down.active {
  background: var(--error);
  border-color: var(--error);
}

.feedback-count {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  margin-left: var(--spacing-sm);
}

.message:hover .message-actions {
  opacity: 1;
}

.message-action {
  padding: var(--spacing-xs);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-tertiary);
  font-size: 0.75rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.message-action:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--border-hover);
}

/* Responsive Design */
@media (max-width: 768px) {
  .chat-container {
    margin: var(--spacing-sm);
    border-radius: var(--radius-md);
    height: calc(100dvh - 140px); /* Adjust for mobile header with work-in-progress */
  }

  .chat-header {
    padding: var(--spacing-md);
  }

  .chat-messages {
    padding: var(--spacing-md);
  }

  .chat-input-container {
    padding: var(--spacing-md);
  }

  .message-text {
    max-width: 85%;
    font-size: 0.875rem;
  }

  .user-message .message-text,
  .luna-message .message-text {
    max-width: 85%;
    padding: var(--spacing-sm) var(--spacing-md);
  }

  /* Better touch targets for mobile */
  .input-actions .btn-icon {
    width: 44px;
    height: 44px;
  }

  #chat-input {
    font-size: 16px; /* Prevent zoom on iOS */
    min-height: 44px;
  }
}

@media (max-width: 480px) {
  .chat-container {
    height: calc(100dvh - 80px); /* Adjust for compact mobile header */
    margin: var(--spacing-xs);
  }
  
  .chat-title h2 {
    font-size: 1.25rem;
  }

  .message-avatar {
    width: 32px;
    height: 32px;
  }

  .message-text {
    font-size: 0.8125rem;
    max-width: 90%;
  }

  .user-message .message-text,
  .luna-message .message-text {
    max-width: 90%;
  }

  .chat-messages {
    padding: var(--spacing-sm);
    gap: var(--spacing-md);
  }

  .chat-input-container {
    padding: var(--spacing-sm);
  }

  .chat-input-wrapper {
    padding: var(--spacing-xs);
  }
}