/* PM210 Web Dashboard Modern Industrial Stylesheet */

:root {
  --bg-dark: #0f172a;
  --bg-card: #1e293b;
  --bg-card-alt: #334155;
  --border-color: #334155;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-blue: #38bdf8;
  --accent-cyan: #06b6d4;
  --status-green: #22c55e;
  --status-amber: #f59e0b;
  --status-red: #ef4444;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.app-header {
  background-color: #111827;
  border-bottom: 1px solid var(--border-color);
  padding: 16px 24px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  max-width: 1300px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.pulse-indicator {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background-color: var(--status-green);
  box-shadow: 0 0 10px var(--status-green);
  animation: pulse 2s infinite;
}

.pulse-indicator.warning {
  background-color: var(--status-amber);
  box-shadow: 0 0 10px var(--status-amber);
  animation: pulse-warn 1.5s infinite;
}

.pulse-indicator.offline {
  background-color: var(--status-red);
  box-shadow: 0 0 10px var(--status-red);
  animation: none;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.15); opacity: 1; box-shadow: 0 0 14px var(--status-green); }
  100% { transform: scale(0.95); opacity: 0.8; }
}

@keyframes pulse-warn {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.15); opacity: 1; box-shadow: 0 0 14px var(--status-amber); }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.header-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.5px;
}

.header-subtitle {
  font-size: 0.85rem;
  color: var(--accent-blue);
  font-weight: 500;
}

.header-status {
  display: flex;
  align-items: center;
  gap: 16px;
}

.status-item {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.status-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.status-value {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.status-badge {
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.badge-online {
  background-color: rgba(34, 197, 94, 0.15);
  color: var(--status-green);
  border: 1px solid var(--status-green);
}

.badge-offline {
  background-color: rgba(239, 68, 68, 0.15);
  color: var(--status-red);
  border: 1px solid var(--status-red);
}

.badge-warning {
  background-color: rgba(245, 158, 11, 0.15);
  color: var(--status-amber);
  border: 1px solid var(--status-amber);
}

/* Alert Warning Banner */
.alert-banner {
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 8px;
  display: none;
}

.alert-banner.active {
  display: block;
  background: rgba(239, 68, 68, 0.18);
  color: #fca5a5;
  border: 1px solid #ef4444;
}

.alert-banner.hidden {
  display: none;
}

/* Main Content */
.app-main {
  flex: 1;
  max-width: 1300px;
  width: 100%;
  margin: 0 auto;
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* KPI Summary Cards */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  box-shadow: var(--shadow-sm);
}

.kpi-card.highlight {
  background: linear-gradient(135deg, #1e293b 0%, #0f2b48 100%);
  border-color: var(--accent-blue);
}

.kpi-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 600;
  text-transform: uppercase;
}

.kpi-value-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.kpi-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
  font-feature-settings: "tnum";
  font-variant-numeric: tabular-nums;
}

.kpi-card.highlight .kpi-number {
  color: var(--accent-cyan);
}

.kpi-unit {
  font-size: 1rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.kpi-text {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
}

.kpi-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Section Header */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.section-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.section-title.text-muted {
  color: var(--text-muted);
}

.refresh-timer {
  font-size: 0.8rem;
  color: var(--accent-blue);
}

/* Meter Grid */
.meter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
}

/* Meter Card */
.meter-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: var(--shadow-md);
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.meter-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent-blue);
}

.meter-card.card-stale {
  border-color: rgba(245, 158, 11, 0.4);
  background: rgba(30, 41, 59, 0.75);
}

.meter-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.meter-panel-name {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-primary);
}

.meter-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.meter-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 12px;
}

.badge-ok {
  background: rgba(34, 197, 94, 0.2);
  color: var(--status-green);
  border: 1px solid var(--status-green);
}

.badge-stale {
  background: rgba(245, 158, 11, 0.2);
  color: var(--status-amber);
  border: 1px solid var(--status-amber);
}

.badge-err {
  background: rgba(239, 68, 68, 0.2);
  color: var(--status-red);
  border: 1px solid var(--status-red);
}

/* Metrics Grid Inside Card */
.metrics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 18px;
}

.metric-item {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.metric-item.full-width {
  grid-column: span 2;
  background: rgba(15, 23, 42, 0.6);
  padding: 10px 14px;
  border-radius: var(--radius-md);
  border: 1px dashed var(--border-color);
}

.metric-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.metric-value-row {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.metric-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}

.metric-value.highlight-energy {
  font-size: 1.35rem;
  color: #38bdf8;
  font-weight: 800;
}

.metric-unit {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 600;
}

/* Footer / Latency in Card */
.meter-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.72rem;
  color: var(--text-muted);
  padding-top: 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* Offline Meter Card */
.meter-card.card-offline {
  opacity: 0.65;
  background: rgba(30, 41, 59, 0.4);
}

.loading-placeholder {
  grid-column: 1 / -1;
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* Footer */
.app-footer {
  text-align: center;
  padding: 16px;
  border-top: 1px solid var(--border-color);
  font-size: 0.75rem;
  color: var(--text-muted);
  background: #111827;
}

/* Mobile Responsiveness */
@media (max-width: 640px) {
  .header-container {
    flex-direction: column;
    align-items: flex-start;
  }
  .header-status {
    width: 100%;
    justify-content: space-between;
  }
  .kpi-grid {
    grid-template-columns: 1fr 1fr;
  }
  .meter-grid {
    grid-template-columns: 1fr;
  }
}