/* CSS Variables - Design System */
:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-tertiary: #1f2937;
  --accent-primary: #00d4ff;
  --accent-secondary: #0ea5e9;
  --chart-forecast: #a855f7;
  --chart-confidence: rgba(168, 85, 247, 0.2);
  --status-optimal: #22c55e;
  --status-warning: #f59e0b;
  --status-critical: #ef4444;
  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --border-color: #374151;
  --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --glow-cyan: 0 0 20px rgba(0, 212, 255, 0.3);
}

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  font-family: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 32px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 32px;
  height: 32px;
  color: var(--accent-primary);
  filter: drop-shadow(var(--glow-cyan));
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 600;
  background: linear-gradient(135deg, var(--accent-primary), var(--chart-forecast));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 24px;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg-tertiary);
  border-radius: 20px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-muted);
  animation: pulse 2s infinite;
}

.status-dot.connected {
  background: var(--status-optimal);
}

.status-dot.error {
  background: var(--status-critical);
  animation: none;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

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

.last-update {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Main Content */
.main-content {
  padding: 88px 24px 24px;
  max-width: 1600px;
  margin: 0 auto;
}

/* Metrics Row */
.metrics-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}

.metric-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  box-shadow: var(--card-shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}

.metric-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--card-shadow), var(--glow-cyan);
}

.metric-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.metric-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.metric-icon {
  width: 20px;
  height: 20px;
  color: var(--accent-primary);
}

.metric-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 2rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.metric-unit {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.status-badge {
  font-size: 1rem;
  padding: 4px 12px;
  border-radius: 6px;
  display: inline-block;
}

.status-badge.optimal {
  background: rgba(34, 197, 94, 0.2);
  color: var(--status-optimal);
}

.status-badge.warning {
  background: rgba(245, 158, 11, 0.2);
  color: var(--status-warning);
}

.status-badge.critical {
  background: rgba(239, 68, 68, 0.2);
  color: var(--status-critical);
}

/* Content Grid */
.content-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
  margin-bottom: 24px;
}

/* Chart Container */
.chart-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  box-shadow: var(--card-shadow);
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.chart-title {
  font-size: 1.125rem;
  font-weight: 600;
}

.chart-legend {
  display: flex;
  gap: 20px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.legend-color {
  width: 12px;
  height: 3px;
  border-radius: 2px;
}

.legend-color.actual {
  background: var(--accent-primary);
}

.legend-color.forecast {
  background: var(--chart-forecast);
}

.chart-wrapper {
  height: 350px;
  position: relative;
}

/* Anomaly Panel */
.anomaly-panel {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  max-height: 420px;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.panel-title {
  font-size: 1rem;
  font-weight: 600;
}

.alert-count {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  padding: 4px 10px;
  background: var(--status-warning);
  color: var(--bg-primary);
  border-radius: 12px;
  font-weight: 600;
}

.anomaly-list {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.anomaly-item {
  background: var(--bg-tertiary);
  border-radius: 8px;
  padding: 12px;
  border-left: 3px solid var(--text-muted);
}

.anomaly-item.critical {
  border-left-color: var(--status-critical);
}

.anomaly-item.high {
  border-left-color: var(--status-warning);
}

.anomaly-item.medium {
  border-left-color: var(--accent-primary);
}

.anomaly-item.low {
  border-left-color: var(--status-optimal);
}

.anomaly-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 8px;
}

.anomaly-type {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  text-transform: capitalize;
}

.anomaly-severity {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.625rem;
  padding: 2px 6px;
  border-radius: 4px;
  text-transform: uppercase;
  font-weight: 600;
}

.anomaly-severity.critical {
  background: rgba(239, 68, 68, 0.2);
  color: var(--status-critical);
}

.anomaly-severity.high {
  background: rgba(245, 158, 11, 0.2);
  color: var(--status-warning);
}

.anomaly-severity.medium {
  background: rgba(0, 212, 255, 0.2);
  color: var(--accent-primary);
}

.anomaly-severity.low {
  background: rgba(34, 197, 94, 0.2);
  color: var(--status-optimal);
}

.anomaly-description {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.anomaly-time {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.625rem;
  color: var(--text-muted);
}

.loading-state, .empty-state {
  text-align: center;
  padding: 24px;
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* Insights Section */
.insights-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  box-shadow: var(--card-shadow);
}

.insights-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.insights-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.125rem;
  font-weight: 600;
}

.ai-icon {
  width: 24px;
  height: 24px;
  color: var(--chart-forecast);
}

.analyze-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: linear-gradient(135deg, var(--accent-primary), var(--chart-forecast));
  color: var(--bg-primary);
  border: none;
  border-radius: 8px;
  font-family: 'Outfit', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.analyze-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--glow-cyan);
}

.analyze-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-icon {
  width: 16px;
  height: 16px;
}

.insights-content {
  background: var(--bg-tertiary);
  border-radius: 8px;
  padding: 20px;
  min-height: 80px;
}

.insight-placeholder {
  color: var(--text-muted);
  font-size: 0.875rem;
  text-align: center;
}

.insight-text {
  color: var(--text-primary);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.insight-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--text-secondary);
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-color);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.forecast-preview {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
}

.forecast-title {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.forecast-values {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.forecast-item {
  background: var(--bg-tertiary);
  border-radius: 8px;
  padding: 12px 16px;
  text-align: center;
  min-width: 100px;
}

.forecast-hour {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.forecast-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1rem;
  font-weight: 600;
  color: var(--chart-forecast);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-tertiary);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Responsive */
@media (max-width: 1200px) {
  .metrics-row {
    grid-template-columns: repeat(2, 1fr);
  }

  .content-grid {
    grid-template-columns: 1fr;
  }

  .anomaly-panel {
    max-height: none;
  }
}

@media (max-width: 768px) {
  .header {
    padding: 0 16px;
  }

  .main-content {
    padding: 80px 16px 16px;
  }

  .metrics-row {
    grid-template-columns: 1fr;
  }

  .metric-value {
    font-size: 1.5rem;
  }

  .chart-wrapper {
    height: 250px;
  }

  .chart-legend {
    flex-direction: column;
    gap: 8px;
  }

  .insights-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .analyze-btn {
    width: 100%;
    justify-content: center;
  }

  .forecast-values {
    flex-direction: column;
  }

  .forecast-item {
    min-width: auto;
  }
}