/**
 * Admin System Diagnostics Page - Engineer's Cockpit UI
 * Build: 20260201_DIAGNOSTICS_V2
 * Scoped under: .admin-page-diagnostics
 * Features: Health Grid, Live Console, Run Diagnostics Modal
 */

/* ==========================================
   SECTION 1: RESET & VARIABLES
   ========================================== */
.admin-page-diagnostics *,
.admin-page-diagnostics *::before,
.admin-page-diagnostics *::after {
  background-image: none !important;
}

.admin-page-diagnostics .btn,
.admin-page-diagnostics button {
  border-radius: 999px;
}

.admin-page-diagnostics {
  --ad-blue: #2B8CFF;
  --ad-blue-soft: rgba(43, 140, 255, 0.14);
  --ad-blue-hover: rgba(43, 140, 255, 0.08);
  --ad-blue-active: rgba(43, 140, 255, 0.16);
  --ad-blue-border: rgba(43, 140, 255, 0.15);
  --ad-dark: #0B1220;
  --ad-panel: #0F1A2E;
  --ad-surface: #162038;
  --ad-text: #EAF2FF;
  --ad-muted: rgba(234, 242, 255, 0.55);
  --ad-success: #10B981;
  --ad-warning: #F59E0B;
  --ad-danger: #EF4444;
  --ad-neutral: #6B7280;
  --ad-radius: 18px;
  --ad-radius-sm: 12px;
  --ad-radius-modal: 22px;
  --ad-transition: 160ms ease;
  --ad-focus-ring: 2px solid rgba(43, 140, 255, 0.45);
  --ad-font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', 'JetBrains Mono', monospace;
}

/* ==========================================
   SECTION 2: PAGE CONTAINER
   ========================================== */
.admin-page-diagnostics {
  padding: 24px;
  min-height: 100%;
  max-width: 1600px;
  margin: 0 auto;
}

/* ==========================================
   SECTION 3: PAGE HEADER
   ========================================== */
.ad-page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 24px;
  gap: 20px;
  flex-wrap: wrap;
}

.ad-header-info {
  flex: 1;
  min-width: 280px;
}

.ad-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--ad-text);
  margin: 0 0 6px 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.ad-subtitle {
  font-size: 13px;
  color: var(--ad-muted);
  margin: 0;
}

/* Header Actions */
.ad-header-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.ad-run-btn {
  padding: 12px 24px;
  background: var(--ad-blue);
  border: 1px solid var(--ad-blue);
  border-radius: 999px;
  color: white;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--ad-transition);
  display: flex;
  align-items: center;
  gap: 8px;
}

.ad-run-btn:hover {
  opacity: 0.9;
}

.ad-run-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.ad-export-btn {
  padding: 10px 18px;
  background: var(--ad-surface);
  border: 1px solid var(--ad-blue-border);
  border-radius: 999px;
  color: var(--ad-text);
  font-size: 13px;
  cursor: pointer;
  transition: var(--ad-transition);
  display: flex;
  align-items: center;
  gap: 6px;
}

.ad-export-btn:hover {
  background: var(--ad-blue-hover);
  border-color: var(--ad-blue);
}

/* ==========================================
   SECTION 4: HEALTH GRID
   ========================================== */
.ad-health-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.ad-health-card {
  background: var(--ad-panel);
  border: 1px solid var(--ad-blue-border);
  border-radius: var(--ad-radius);
  padding: 20px;
  position: relative;
  overflow: hidden;
  transition: var(--ad-transition);
}

.ad-health-card:hover {
  background: var(--ad-blue-hover);
}

/* Status indicator strip at top of card */
.ad-health-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--ad-neutral);
}

.ad-health-card.healthy::before { background: var(--ad-success); }
.ad-health-card.warning::before { background: var(--ad-warning); }
.ad-health-card.critical::before { background: var(--ad-danger); }
.ad-health-card.unknown::before { background: var(--ad-neutral); }

.ad-health-icon {
  font-size: 28px;
  margin-bottom: 12px;
  display: block;
}

.ad-health-label {
  font-size: 11px;
  color: var(--ad-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.ad-health-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--ad-text);
  margin-bottom: 4px;
}

.ad-health-card.healthy .ad-health-value { color: var(--ad-success); }
.ad-health-card.warning .ad-health-value { color: var(--ad-warning); }
.ad-health-card.critical .ad-health-value { color: var(--ad-danger); }

.ad-health-meta {
  font-size: 10px;
  color: var(--ad-muted);
  font-family: var(--ad-font-mono);
}

.ad-health-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  margin-top: 10px;
}

.ad-health-card.healthy .ad-health-status {
  background: rgba(16, 185, 129, 0.12);
  color: var(--ad-success);
}
.ad-health-card.warning .ad-health-status {
  background: rgba(245, 158, 11, 0.12);
  color: var(--ad-warning);
}
.ad-health-card.critical .ad-health-status {
  background: rgba(239, 68, 68, 0.12);
  color: var(--ad-danger);
}
.ad-health-card.unknown .ad-health-status {
  background: rgba(107, 114, 128, 0.12);
  color: var(--ad-neutral);
}

/* Pulse animation for live indicator */
.ad-pulse {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  animation: ad-pulse-anim 2s ease-in-out infinite;
}

@keyframes ad-pulse-anim {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

/* ==========================================
   SECTION 5: LIVE LOG CONSOLE
   ========================================== */
.ad-console-wrap {
  background: var(--ad-panel);
  border: 1px solid var(--ad-blue-border);
  border-radius: var(--ad-radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  max-height: calc(100vh - 460px);
  min-height: 300px;
}

/* Console Header with filters */
.ad-console-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: var(--ad-surface);
  border-bottom: 1px solid var(--ad-blue-border);
  gap: 12px;
  flex-wrap: wrap;
}

.ad-console-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ad-text);
}

.ad-console-title .live-dot {
  width: 8px;
  height: 8px;
  background: var(--ad-success);
  border-radius: 50%;
  animation: ad-pulse-anim 2s ease-in-out infinite;
}

/* Log level filter pills */
.ad-log-filters {
  display: flex;
  gap: 4px;
  background: var(--ad-dark);
  padding: 4px;
  border-radius: 999px;
}

.ad-log-pill {
  padding: 6px 12px;
  background: transparent;
  border: none;
  border-radius: 999px;
  color: var(--ad-muted);
  font-size: 11px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--ad-transition);
}

.ad-log-pill:hover {
  color: var(--ad-text);
  background: var(--ad-blue-hover);
}

.ad-log-pill.active {
  background: var(--ad-blue);
  color: white;
}

.ad-log-pill.info.active { background: var(--ad-blue); }
.ad-log-pill.warn.active { background: var(--ad-warning); }
.ad-log-pill.error.active { background: var(--ad-danger); }

/* Console controls */
.ad-console-controls {
  display: flex;
  gap: 8px;
}

.ad-console-btn {
  width: 32px;
  height: 32px;
  border: 1px solid var(--ad-blue-border);
  border-radius: 999px;
  background: var(--ad-dark);
  color: var(--ad-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  transition: var(--ad-transition);
}

.ad-console-btn:hover {
  background: var(--ad-blue-hover);
  color: var(--ad-blue);
  border-color: var(--ad-blue);
}

.ad-console-btn.paused {
  background: rgba(239, 68, 68, 0.12);
  color: var(--ad-danger);
  border-color: rgba(239, 68, 68, 0.3);
}

/* Console Body (log output) */
.ad-console-body {
  flex: 1;
  overflow-y: auto;
  padding: 0;
  background: var(--ad-dark);
  font-family: var(--ad-font-mono);
  font-size: 12px;
  line-height: 1.6;
}

/* Log entries */
.ad-log-entry {
  display: flex;
  padding: 8px 16px;
  border-bottom: 1px solid rgba(43, 140, 255, 0.04);
  transition: var(--ad-transition);
}

.ad-log-entry:hover {
  background: rgba(43, 140, 255, 0.04);
}

.ad-log-time {
  color: var(--ad-muted);
  min-width: 100px;
  flex-shrink: 0;
  font-size: 11px;
}

.ad-log-level {
  min-width: 60px;
  flex-shrink: 0;
  font-weight: 600;
  text-transform: uppercase;
  font-size: 10px;
}

.ad-log-entry.info .ad-log-level { color: var(--ad-blue); }
.ad-log-entry.warn .ad-log-level { color: var(--ad-warning); }
.ad-log-entry.error .ad-log-level { color: var(--ad-danger); }
.ad-log-entry.debug .ad-log-level { color: var(--ad-muted); }

.ad-log-msg {
  color: var(--ad-text);
  flex: 1;
  word-break: break-word;
}

.ad-log-source {
  color: var(--ad-muted);
  font-size: 10px;
  min-width: 80px;
  text-align: left;
  flex-shrink: 0;
}

/* Empty console state */
.ad-console-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 40px;
  color: var(--ad-muted);
  text-align: center;
}

.ad-console-empty-icon {
  font-size: 48px;
  opacity: 0.3;
  margin-bottom: 16px;
}

/* ==========================================
   SECTION 6: METRICS PANEL (2-column)
   ========================================== */
.ad-metrics-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.ad-metrics-panel {
  background: var(--ad-panel);
  border: 1px solid var(--ad-blue-border);
  border-radius: var(--ad-radius);
  overflow: hidden;
}

.ad-metrics-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--ad-surface);
  border-bottom: 1px solid var(--ad-blue-border);
}

.ad-metrics-header h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--ad-text);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.ad-metrics-body {
  padding: 16px 20px;
}

/* Metric row */
.ad-metric-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid rgba(43, 140, 255, 0.06);
}

.ad-metric-row:last-child {
  border-bottom: none;
}

.ad-metric-label {
  font-size: 13px;
  color: var(--ad-muted);
}

.ad-metric-value {
  font-size: 14px;
  font-weight: 600;
  color: var(--ad-text);
  font-family: var(--ad-font-mono);
}

.ad-metric-value.success { color: var(--ad-success); }
.ad-metric-value.warning { color: var(--ad-warning); }
.ad-metric-value.danger { color: var(--ad-danger); }

/* Progress bar metric */
.ad-metric-bar {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(43, 140, 255, 0.06);
}

.ad-metric-bar:last-child {
  border-bottom: none;
}

.ad-metric-bar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.ad-metric-bar-track {
  height: 6px;
  background: var(--ad-surface);
  border-radius: 999px;
  overflow: hidden;
}

.ad-metric-bar-fill {
  height: 100%;
  background: var(--ad-blue);
  border-radius: 999px;
  transition: width 0.5s ease;
}

.ad-metric-bar-fill.success { background: var(--ad-success); }
.ad-metric-bar-fill.warning { background: var(--ad-warning); }
.ad-metric-bar-fill.danger { background: var(--ad-danger); }

/* ==========================================
   SECTION 7: RUN DIAGNOSTICS MODAL
   ========================================== */
.ad-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(11, 18, 32, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transition: opacity 200ms ease, visibility 200ms ease;
  padding: 24px;
}

.ad-modal-overlay.show {
  opacity: 1;
  visibility: visible;
}

.ad-modal {
  background: var(--ad-panel);
  border: 1px solid var(--ad-blue-border);
  border-radius: var(--ad-radius-modal);
  width: 100%;
  max-width: 600px;
  max-height: calc(100vh - 48px);
  display: flex;
  flex-direction: column;
  transform: scale(0.96);
  opacity: 0;
  transition: transform 200ms ease, opacity 200ms ease;
}

.ad-modal-overlay.show .ad-modal {
  transform: scale(1);
  opacity: 1;
}

.ad-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--ad-blue-border);
  flex-shrink: 0;
}

.ad-modal-header h2 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ad-text);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.ad-modal-close {
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 999px;
  background: var(--ad-surface);
  color: var(--ad-muted);
  cursor: pointer;
  font-size: 18px;
  transition: var(--ad-transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.ad-modal-close:hover {
  background: rgba(239, 68, 68, 0.12);
  color: var(--ad-danger);
}

.ad-modal-body {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
}

/* Diagnostics Steps */
.ad-diag-steps {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.ad-diag-step {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: var(--ad-surface);
  border: 1px solid var(--ad-blue-border);
  border-radius: var(--ad-radius-sm);
  transition: var(--ad-transition);
}

.ad-diag-step.running {
  border-color: var(--ad-blue);
  background: var(--ad-blue-hover);
}

.ad-diag-step.success {
  border-color: var(--ad-success);
}

.ad-diag-step.error {
  border-color: var(--ad-danger);
}

.ad-step-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--ad-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
}

.ad-diag-step.pending .ad-step-icon { color: var(--ad-muted); }
.ad-diag-step.running .ad-step-icon { 
  background: var(--ad-blue-soft);
  color: var(--ad-blue);
  animation: ad-spin 1s linear infinite;
}
.ad-diag-step.success .ad-step-icon { 
  background: rgba(16, 185, 129, 0.12);
  color: var(--ad-success);
}
.ad-diag-step.error .ad-step-icon { 
  background: rgba(239, 68, 68, 0.12);
  color: var(--ad-danger);
}

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

.ad-step-info {
  flex: 1;
}

.ad-step-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--ad-text);
}

.ad-step-status {
  font-size: 11px;
  color: var(--ad-muted);
  margin-top: 2px;
}

.ad-diag-step.success .ad-step-status { color: var(--ad-success); }
.ad-diag-step.error .ad-step-status { color: var(--ad-danger); }

.ad-step-time {
  font-size: 11px;
  color: var(--ad-muted);
  font-family: var(--ad-font-mono);
}

/* Modal actions */
.ad-modal-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  padding: 20px 24px;
  border-top: 1px solid var(--ad-blue-border);
}

.ad-btn {
  padding: 10px 20px;
  background: var(--ad-surface);
  border: 1px solid var(--ad-blue-border);
  border-radius: 999px;
  color: var(--ad-text);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--ad-transition);
}

.ad-btn:hover {
  background: var(--ad-blue-hover);
  border-color: var(--ad-blue);
}

.ad-btn-primary {
  background: var(--ad-blue);
  border-color: var(--ad-blue);
  color: white;
}

.ad-btn-primary:hover {
  opacity: 0.9;
  background: var(--ad-blue);
}

.ad-btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ==========================================
   SECTION 8: LOADING & ERROR STATES
   ========================================== */
.ad-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px;
  gap: 16px;
}

.ad-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--ad-surface);
  border-top-color: var(--ad-blue);
  border-radius: 50%;
  animation: ad-spin 0.8s linear infinite;
}

.ad-loading-text {
  font-size: 13px;
  color: var(--ad-muted);
}

.ad-error-card {
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: var(--ad-radius);
  padding: 40px;
  text-align: center;
}

.ad-error-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.ad-error-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--ad-danger);
  margin: 0 0 8px 0;
}

.ad-error-text {
  font-size: 13px;
  color: var(--ad-muted);
  margin: 0 0 20px 0;
}

/* ==========================================
   SECTION 9: RESPONSIVE
   ========================================== */
@media (max-width: 1024px) {
  .ad-page-header {
    flex-direction: column;
    align-items: stretch;
  }
  
  .ad-header-actions {
    justify-content: flex-start;
  }
  
  .ad-health-grid {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  }
  
  .ad-console-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}

@media (max-width: 768px) {
  .admin-page-diagnostics {
    padding: 16px;
  }
  
  .ad-health-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  
  .ad-health-card {
    padding: 14px;
  }
  
  .ad-health-icon {
    font-size: 22px;
    margin-bottom: 8px;
  }
  
  .ad-health-value {
    font-size: 16px;
  }
  
  .ad-console-wrap {
    max-height: 400px;
  }
  
  .ad-log-entry {
    flex-direction: column;
    gap: 4px;
    padding: 10px 12px;
  }
  
  .ad-log-time,
  .ad-log-level,
  .ad-log-source {
    min-width: unset;
  }
  
  .ad-metrics-row {
    grid-template-columns: 1fr;
  }
  
  .ad-modal {
    max-width: 100%;
    margin: 12px;
  }
}

/* ==========================================
   SECTION 10: UTILITY CLASSES
   ========================================== */
.ad-text-mono {
  font-family: var(--ad-font-mono);
}

.ad-text-success { color: var(--ad-success) !important; }
.ad-text-warning { color: var(--ad-warning) !important; }
.ad-text-danger { color: var(--ad-danger) !important; }
.ad-text-muted { color: var(--ad-muted) !important; }
.ad-text-blue { color: var(--ad-blue) !important; }

.ad-mb-0 { margin-bottom: 0 !important; }
.ad-mb-8 { margin-bottom: 8px !important; }
.ad-mb-16 { margin-bottom: 16px !important; }
.ad-mb-24 { margin-bottom: 24px !important; }

.ad-gap-8 { gap: 8px !important; }
.ad-gap-12 { gap: 12px !important; }
.ad-gap-16 { gap: 16px !important; }