/**
 * Chatbot Admin UI - Custom Stylesheet
 * Extends design-tokens.css with chatbot-specific components
 */

/* ============================================
   CHATBOT SPECIFIC COLOR VARIABLES
   ============================================ */
:root {
  /* Chatbot Brand Colors */
  --chatbot-primary: #25D366; /* WhatsApp Green */
  --chatbot-primary-dark: #128C7E;
  --chatbot-primary-light: #DCF8C6;
  --chatbot-secondary: #34B7F1; /* WhatsApp Blue */
  
  /* Message Colors */
  --chatbot-message-in: #E5DDD5;
  --chatbot-message-out: #DCF8C6;
  --chatbot-message-time: #667781;
  
  /* Status Colors */
  --chatbot-status-online: #25D366;
  --chatbot-status-offline: #8696A0;
  --chatbot-status-typing: #F0F2F5;
  
  /* Session States */
  --chatbot-state-welcome: var(--color-info-100);
  --chatbot-state-active: var(--color-success-100);
  --chatbot-state-pending: var(--color-warning-100);
  --chatbot-state-error: var(--color-error-100);
}

/* ============================================
   KPI CARDS
   ============================================ */
.chatbot-kpi-card {
  background: var(--color-bg-card);
  border: var(--card-border);
  border-radius: var(--card-border-radius);
  padding: var(--spacing-6);
  box-shadow: var(--card-shadow);
  transition: var(--transition-base);
  height: 100%;
}

.chatbot-kpi-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.chatbot-kpi-card .kpi-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  margin-bottom: var(--spacing-2);
}

.chatbot-kpi-card .kpi-value {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  line-height: var(--line-height-tight);
}

.chatbot-kpi-card .kpi-change {
  font-size: var(--font-size-xs);
  margin-top: var(--spacing-2);
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
}

.chatbot-kpi-card .kpi-change.positive {
  color: var(--color-success);
}

.chatbot-kpi-card .kpi-change.negative {
  color: var(--color-error);
}

/* ============================================
   CHAT MESSAGE BUBBLES
   ============================================ */
.chatbot-message {
  display: flex;
  margin-bottom: var(--spacing-4);
  animation: fadeIn 0.3s ease-in;
}

.chatbot-message.incoming {
  justify-content: flex-start;
}

.chatbot-message.outgoing {
  justify-content: flex-end;
}

.chatbot-message-bubble {
  max-width: 70%;
  padding: var(--spacing-3) var(--spacing-4);
  border-radius: var(--radius-lg);
  position: relative;
  word-wrap: break-word;
}

.chatbot-message.incoming .chatbot-message-bubble {
  background: var(--chatbot-message-in);
  border-bottom-left-radius: var(--radius-sm);
}

.chatbot-message.outgoing .chatbot-message-bubble {
  background: var(--chatbot-message-out);
  border-bottom-right-radius: var(--radius-sm);
}

.chatbot-message-text {
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-primary);
  margin: 0;
}

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

.chatbot-message-status {
  display: inline-block;
  margin-left: var(--spacing-2);
  font-size: var(--font-size-xs);
}

.chatbot-message-status.sent::after {
  content: "✓";
  color: var(--chatbot-message-time);
}

.chatbot-message-status.delivered::after {
  content: "✓✓";
  color: var(--chatbot-message-time);
}

.chatbot-message-status.read::after {
  content: "✓✓";
  color: var(--chatbot-primary);
}

/* ============================================
   CONVERSATION LIST
   ============================================ */
.chatbot-conversation-item {
  padding: var(--spacing-4);
  border-bottom: 1px solid var(--color-border-primary);
  cursor: pointer;
  transition: var(--transition-base);
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.chatbot-conversation-item:hover {
  background: var(--color-bg-secondary);
}

.chatbot-conversation-item.active {
  background: var(--color-primary-50);
  border-left: 3px solid var(--color-primary);
}

.chatbot-conversation-avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-weight: var(--font-weight-semibold);
  flex-shrink: 0;
}

.chatbot-conversation-info {
  flex: 1;
  min-width: 0;
}

.chatbot-conversation-name {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-1);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chatbot-conversation-preview {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chatbot-conversation-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--spacing-1);
  flex-shrink: 0;
}

.chatbot-conversation-time {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

.chatbot-conversation-badge {
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-full);
  padding: 2px 6px;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  min-width: 20px;
  text-align: center;
}

/* ============================================
   STATUS BADGES
   ============================================ */
.chatbot-status-badge {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-1) var(--spacing-2);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
}

.chatbot-status-badge.welcome {
  background: var(--chatbot-state-welcome);
  color: var(--color-info-800);
}

.chatbot-status-badge.active {
  background: var(--chatbot-state-active);
  color: var(--color-success-800);
}

.chatbot-status-badge.pending {
  background: var(--chatbot-state-pending);
  color: var(--color-warning-800);
}

.chatbot-status-badge.error {
  background: var(--chatbot-state-error);
  color: var(--color-error-800);
}

.chatbot-status-badge.online {
  background: var(--chatbot-status-online);
  color: var(--color-white);
}

.chatbot-status-badge.offline {
  background: var(--chatbot-status-offline);
  color: var(--color-white);
}

/* ============================================
   DATA TABLE ENHANCEMENTS
   ============================================ */
.chatbot-table {
  width: 100%;
  border-collapse: collapse;
}

.chatbot-table thead {
  background: var(--color-bg-secondary);
  border-bottom: 2px solid var(--color-border-primary);
}

.chatbot-table th {
  padding: var(--spacing-3) var(--spacing-4);
  text-align: left;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
}

.chatbot-table td {
  padding: var(--spacing-4);
  border-bottom: 1px solid var(--color-border-primary);
  color: var(--color-text-primary);
}

.chatbot-table tbody tr {
  transition: var(--transition-base);
}

.chatbot-table tbody tr:hover {
  background: var(--table-row-hover);
}

.chatbot-table tbody tr.selected {
  background: var(--color-primary-50);
}

/* ============================================
   FILTER BAR
   ============================================ */
.chatbot-filter-bar {
  background: var(--color-bg-card);
  border: var(--card-border);
  border-radius: var(--card-border-radius);
  padding: var(--spacing-4);
  margin-bottom: var(--spacing-6);
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-3);
  align-items: center;
}

.chatbot-filter-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-3);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.chatbot-filter-chip .remove {
  cursor: pointer;
  color: var(--color-text-tertiary);
  transition: var(--transition-base);
}

.chatbot-filter-chip .remove:hover {
  color: var(--color-error);
}

/* ============================================
   FORM ENHANCEMENTS
   ============================================ */
.chatbot-form-group {
  margin-bottom: var(--spacing-5);
}

.chatbot-form-label {
  display: block;
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-2);
  font-size: var(--font-size-sm);
}

.chatbot-form-label.required::after {
  content: " *";
  color: var(--color-error);
}

.chatbot-form-help {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin-top: var(--spacing-1);
}

.chatbot-form-error {
  font-size: var(--font-size-xs);
  color: var(--color-error);
  margin-top: var(--spacing-1);
}

/* ============================================
   MODAL ENHANCEMENTS
   ============================================ */
.chatbot-modal-header {
  padding: var(--spacing-6);
  border-bottom: 1px solid var(--color-border-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.chatbot-modal-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0;
}

.chatbot-modal-body {
  padding: var(--spacing-6);
}

.chatbot-modal-footer {
  padding: var(--spacing-6);
  border-top: 1px solid var(--color-border-primary);
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-3);
}

/* ============================================
   BUTTON VARIANTS
   ============================================ */
.btn-chatbot-primary {
  background: var(--chatbot-primary);
  border-color: var(--chatbot-primary);
  color: var(--color-white);
}

.btn-chatbot-primary:hover {
  background: var(--chatbot-primary-dark);
  border-color: var(--chatbot-primary-dark);
  color: var(--color-white);
}

.btn-chatbot-outline {
  border-color: var(--chatbot-primary);
  color: var(--chatbot-primary);
}

.btn-chatbot-outline:hover {
  background: var(--chatbot-primary);
  color: var(--color-white);
}

/* ============================================
   LOADING STATES
   ============================================ */
.chatbot-loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--color-border-primary);
  border-top-color: var(--color-primary);
  border-radius: var(--radius-full);
  animation: spin 0.6s linear infinite;
}

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

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

/* ============================================
   RESPONSIVE UTILITIES
   ============================================ */
@media (max-width: 768px) {
  .chatbot-message-bubble {
    max-width: 85%;
  }
  
  .chatbot-kpi-card .kpi-value {
    font-size: var(--font-size-2xl);
  }
  
  .chatbot-filter-bar {
    flex-direction: column;
    align-items: stretch;
  }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.chatbot-text-truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chatbot-divider {
  height: 1px;
  background: var(--color-border-primary);
  margin: var(--spacing-6) 0;
  border: none;
}

.chatbot-empty-state {
  text-align: center;
  padding: var(--spacing-12);
  color: var(--color-text-secondary);
}

.chatbot-empty-state-icon {
  font-size: var(--font-size-5xl);
  color: var(--color-text-tertiary);
  margin-bottom: var(--spacing-4);
}

.chatbot-empty-state-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-2);
  color: var(--color-text-primary);
}

.chatbot-empty-state-text {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
}