/* ===================================================================
   Chat Interface Styles
   Modern chat UI inspired by WhatsApp/iMessage but professional
   =================================================================== */

.chat-container {
  max-width: 800px;
  margin: 0 auto;
  background: var(--background);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  height: 600px;
  display: flex;
  flex-direction: column;
}

.chat-header {
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
  color: white;
  padding: var(--space-4) var(--space-6);
  text-align: center;
}

.chat-header h3 {
  margin: 0;
  font-size: var(--text-lg);
  font-weight: 600;
}

.chat-header p {
  margin: var(--space-1) 0 0 0;
  font-size: var(--text-sm);
  opacity: 0.9;
  color: white;
}

.chat-messages {
  flex: 1;
  padding: var(--space-4);
  overflow-y: auto;
  background: var(--gray-50);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.chat-message {
  display: flex;
  align-items: flex-end;
  gap: var(--space-2);
  animation: slideUp 0.3s ease-out;
}

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

.message-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--text-sm);
  font-weight: 600;
  flex-shrink: 0;
}

.message-avatar.user {
  background: var(--success-green);
}

.message-bubble {
  max-width: 70%;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  line-height: 1.4;
  position: relative;
}

.message-bubble.system {
  background: white;
  color: var(--text-primary);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.message-bubble.user {
  background: var(--primary-blue);
  color: white;
}

.message-time {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: var(--space-1);
  text-align: right;
}

.message-bubble.user .message-time {
  color: rgba(255, 255, 255, 0.7);
  text-align: left;
}

.chat-input-container {
  padding: var(--space-4);
  background: white;
  border-top: 1px solid var(--border);
}

.chat-input-form {
  display: flex;
  gap: var(--space-3);
  align-items: flex-end;
}

.chat-input {
  flex: 1;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  font-size: var(--text-base);
  resize: none;
  min-height: 44px;
  max-height: 120px;
  transition: border-color var(--transition-fast);
}

.chat-input:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.chat-send-btn {
  background: var(--primary-blue);
  color: white;
  border: none;
  border-radius: 50%;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.chat-send-btn:hover {
  background: var(--primary-blue-dark);
  transform: scale(1.05);
}

.chat-send-btn:disabled {
  background: var(--gray-300);
  cursor: not-allowed;
  transform: none;
}

/* Typing Indicator */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  max-width: 70%;
}

.typing-dots {
  display: flex;
  gap: var(--space-1);
}

.typing-dot {
  width: 6px;
  height: 6px;
  background: var(--gray-400);
  border-radius: 50%;
  animation: typingPulse 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 typingPulse {
  0%, 80%, 100% {
    transform: scale(0.8);
    opacity: 0.5;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
}

/* Progress Indicator */
.chat-progress {
  padding: var(--space-3) var(--space-6);
  background: rgba(30, 64, 175, 0.05);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.progress-bar {
  flex: 1;
  height: 4px;
  background: var(--gray-200);
  border-radius: 2px;
  margin: 0 var(--space-4);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--primary-blue);
  border-radius: 2px;
  transition: width var(--transition-normal);
}

/* Quick Reply Buttons */
.quick-replies {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.quick-reply-btn {
  padding: var(--space-2) var(--space-3);
  background: white;
  border: 1px solid var(--primary-blue);
  color: var(--primary-blue);
  border-radius: var(--radius-xl);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.quick-reply-btn:hover {
  background: var(--primary-blue);
  color: white;
}

/* Chat Completion State */
.chat-completion {
  text-align: center;
  padding: var(--space-6);
  background: rgba(16, 185, 129, 0.05);
  border-radius: var(--radius-lg);
  margin: var(--space-4);
}

.completion-icon {
  width: 48px;
  height: 48px;
  background: var(--success-green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-3) auto;
  color: white;
  font-size: var(--text-xl);
}

.completion-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.completion-message {
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
}

/* Mobile Responsive - Using new breakpoint system */
@media (max-width: 767px) {
  .chat-container {
    height: 70vh;
    margin: var(--spacing-md);
    border-radius: var(--radius-lg);
  }
  
  .message-bubble {
    max-width: 85%;
    font-size: var(--font-size-sm);
  }
  
  .chat-input-form {
    gap: var(--spacing-sm);
  }
  
  .chat-input {
    min-height: var(--touch-target-min);
    font-size: var(--font-size-base);
  }
  
  .chat-send-btn {
    min-width: var(--touch-target-min);
    min-height: var(--touch-target-min);
  }
  
  .quick-replies {
    gap: var(--touch-spacing-min);
  }
  
  .quick-reply-btn {
    font-size: var(--font-size-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    min-height: var(--touch-target-min);
  }
  
  .chat-header {
    padding: var(--spacing-md) var(--spacing-lg);
  }
  
  .chat-messages {
    padding: var(--spacing-md);
    gap: var(--spacing-md);
  }
  
  .chat-input-container {
    padding: var(--spacing-md);
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  .chat-message,
  .typing-dot,
  .progress-fill {
    animation: none;
    transition: none;
  }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  .message-bubble.system {
    border-width: 2px;
  }
  
  .chat-input {
    border-width: 2px;
  }
  
  .quick-reply-btn {
    border-width: 2px;
  }
}
/* Enhanced Chat Completion */
.completion-summary {
  background: rgba(16, 185, 129, 0.05);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin: var(--space-3) 0;
  text-align: left;
}

.completion-summary h4 {
  margin: 0 0 var(--space-2) 0;
  color: var(--success-green-dark);
  font-size: var(--text-base);
  font-weight: 600;
}

.completion-summary ul {
  margin: 0;
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

.completion-summary li {
  margin-bottom: var(--space-1);
}

.completion-summary strong {
  color: var(--text-primary);
}

/* Enhanced Quick Replies */
.quick-replies {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-3);
  max-width: 100%;
}

.quick-reply-btn {
  padding: var(--space-2) var(--space-3);
  background: white;
  border: 1px solid var(--primary-blue);
  color: var(--primary-blue);
  border-radius: var(--radius-xl);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  flex-shrink: 0;
}

.quick-reply-btn:hover {
  background: var(--primary-blue);
  color: white;
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

/* Progress Enhancement */
.chat-progress {
  padding: var(--space-3) var(--space-6);
  background: rgba(30, 64, 175, 0.05);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-sm);
  color: var(--text-secondary);
  font-weight: 500;
}

.progress-bar {
  flex: 1;
  height: 6px;
  background: var(--gray-200);
  border-radius: 3px;
  margin: 0 var(--space-4);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-blue), var(--primary-blue-light));
  border-radius: 3px;
  transition: width var(--transition-normal);
  position: relative;
}

.progress-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* Message Enhancements */
.message-bubble.system {
  background: white;
  color: var(--text-primary);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  position: relative;
}

.message-bubble.system::before {
  content: '';
  position: absolute;
  left: -8px;
  top: 12px;
  width: 0;
  height: 0;
  border-top: 8px solid transparent;
  border-bottom: 8px solid transparent;
  border-right: 8px solid white;
}

.message-bubble.user {
  background: var(--primary-blue);
  color: white;
  position: relative;
}

.message-bubble.user::before {
  content: '';
  position: absolute;
  right: -8px;
  top: 12px;
  width: 0;
  height: 0;
  border-top: 8px solid transparent;
  border-bottom: 8px solid transparent;
  border-left: 8px solid var(--primary-blue);
}

/* Typing Indicator Enhancement */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  max-width: 70%;
  box-shadow: var(--shadow-sm);
}

.typing-indicator::before {
  content: 'AI is typing';
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-right: var(--space-2);
}

/* ===================================================================
   Markdown content inside chat bubbles
   =================================================================== */
.md-content {
  line-height: 1.6;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.md-content > *:first-child {
  margin-top: 0;
}

.md-content > *:last-child {
  margin-bottom: 0;
}

.md-content p {
  margin: 0 0 0.5em 0;
}

.md-content p:last-child {
  margin-bottom: 0;
}

.md-content strong {
  font-weight: 600;
}

.md-content em {
  font-style: italic;
}

.md-content h1,
.md-content h2,
.md-content h3,
.md-content h4 {
  margin: 0.75em 0 0.35em 0;
  font-weight: 600;
  line-height: 1.3;
}

.md-content h1 { font-size: 1.25em; }
.md-content h2 { font-size: 1.15em; }
.md-content h3 { font-size: 1.05em; }
.md-content h4 { font-size: 1em; }

.md-content ul,
.md-content ol {
  margin: 0.4em 0;
  padding-left: 1.5em;
}

.md-content li {
  margin-bottom: 0.2em;
}

.md-content li > ul,
.md-content li > ol {
  margin: 0.15em 0;
}

.md-content code {
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 0.875em;
  background: var(--gray-100, #f3f4f6);
  padding: 0.15em 0.35em;
  border-radius: 4px;
  border: 1px solid var(--gray-200, #e5e7eb);
}

.md-content pre {
  margin: 0.5em 0;
  padding: 0.75em 1em;
  background: var(--gray-900, #1a1a2e);
  color: #e2e8f0;
  border-radius: var(--radius-md, 8px);
  overflow-x: auto;
  font-size: 0.85em;
  line-height: 1.5;
}

.md-content pre code {
  background: none;
  border: none;
  padding: 0;
  color: inherit;
  font-size: inherit;
}

.md-content blockquote {
  margin: 0.5em 0;
  padding: 0.35em 0.75em;
  border-left: 3px solid var(--primary-blue, #1e40af);
  background: var(--gray-50, #f9fafb);
  color: var(--text-secondary, #6b7280);
}

.md-content blockquote p {
  margin: 0;
}

.md-content hr {
  margin: 0.75em 0;
  border: none;
  border-top: 1px solid var(--border, #e5e7eb);
}

.md-content a {
  color: var(--primary-blue, #1e40af);
  text-decoration: underline;
}

.md-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.5em 0;
  font-size: 0.9em;
}

.md-content th,
.md-content td {
  padding: 0.35em 0.6em;
  border: 1px solid var(--border, #e5e7eb);
  text-align: left;
}

.md-content th {
  background: var(--gray-50, #f9fafb);
  font-weight: 600;
}

.md-content img {
  max-width: 100%;
  border-radius: var(--radius-md, 8px);
}