:root {
  --primary: #0f766e;
  --primary-light: #0d9488;
  --primary-dark: #115e59;
  --secondary: #2563eb;
  --success: #16a34a;
  --warning: #ea8c55;
  --danger: #dc2626;
  --info: #3b82f6;
  
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --bg-light: #f8fafc;
  
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-dark: #1e293b;
  
  --border: #475569;
  --border-light: #e2e8f0;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.2);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  -webkit-font-smoothing: antialiased;
  background: linear-gradient(135deg, var(--bg-primary) 0%, #0a0e27 100%);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
}

/* ==================== TOPBAR ==================== */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 32px;
  background: rgba(15, 23, 42, 0.95);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
}

.topbar-left {
  flex: 1;
}

.logo-section h1 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
  letter-spacing: -0.5px;
}

.subtitle {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

.topbar-right {
  display: flex;
  gap: 32px;
}

.status-indicators {
  display: flex;
  gap: 24px;
}

.status-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: flex-end;
}

.status-label {
  font-size: 11px;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.status-badge::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background: #10b981;
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

.status-time {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  font-family: 'Monaco', 'Menlo', monospace;
}

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

/* ==================== CONTROLS ==================== */
.controls-section {
  display: flex;
  align-items: flex-end;
  gap: 16px;
  padding: 16px 32px;
  background: rgba(30, 41, 59, 0.5);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.control-label {
  font-size: 12px;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.select-input {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: rgba(30, 41, 59, 0.8);
  color: var(--text-primary);
  font-size: 13px;
  transition: all 0.2s ease;
  min-width: 140px;
}

.select-input:hover,
.select-input:focus {
  border-color: var(--primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.1);
}

.button-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border: none;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: white;
  box-shadow: 0 4px 12px rgba(15, 118, 110, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(15, 118, 110, 0.4);
}

.btn-secondary {
  background: rgba(51, 65, 85, 0.6);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: rgba(51, 65, 85, 0.9);
}

.btn-danger {
  background: rgba(220, 38, 38, 0.18);
  color: #fecaca;
  border: 1px solid rgba(248, 113, 113, 0.5);
}

.btn-danger:hover {
  background: rgba(220, 38, 38, 0.28);
  border-color: rgba(248, 113, 113, 0.8);
}

/* ==================== ALERTS ==================== */
.alerts-section {
  padding: 16px 32px;
}

.alerts-container {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.alert {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: rgba(220, 38, 38, 0.1);
  border: 1px solid rgba(220, 38, 38, 0.3);
  border-radius: 8px;
  color: #fca5a5;
  font-size: 13px;
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.alert-icon {
  font-size: 16px;
}

.alert-close {
  margin-left: auto;
  background: transparent;
  border: none;
  color: #fca5a5;
  cursor: pointer;
  font-size: 16px;
  padding: 0;
}

/* ==================== METRICS SECTION ==================== */
.metrics-section {
  padding: 24px 32px;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.metric-card {
  background: linear-gradient(135deg, rgba(51, 65, 85, 0.4) 0%, rgba(30, 41, 59, 0.4) 100%);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.metric-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), transparent);
}

.metric-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: 0 8px 20px rgba(15, 118, 110, 0.2);
}

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

.metric-label {
  font-size: 12px;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.metric-status {
  font-size: 10px;
  padding: 3px 8px;
  background: rgba(16, 185, 129, 0.2);
  color: #10b981;
  border-radius: 999px;
}

.metric-display {
  margin-bottom: 12px;
}

.metric-value {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -1px;
  color: var(--text-primary);
}

.metric-unit {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

.metric-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 8px;
  border-top: 1px solid rgba(148, 163, 184, 0.1);
  font-size: 11px;
}

.metric-time {
  color: var(--text-muted);
}

.metric-change {
  padding: 2px 6px;
  background: rgba(16, 185, 129, 0.2);
  color: #10b981;
  border-radius: 4px;
}

.metric-change.negative {
  background: rgba(220, 38, 38, 0.2);
  color: #fca5a5;
}

/* ==================== STATUS GRID ==================== */
.status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  padding: 24px 32px;
}

.status-card {
  background: linear-gradient(135deg, rgba(51, 65, 85, 0.3) 0%, rgba(30, 41, 59, 0.3) 100%);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  backdrop-filter: blur(10px);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

.card-header h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.status-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  background: #10b981;
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

.status-content,
.storage-content {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.status-row,
.storage-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
}

.status-row span:first-child,
.storage-row span:first-child {
  color: var(--text-muted);
}

.status-row strong,
.storage-row strong {
  color: var(--text-primary);
  font-weight: 600;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-neutral {
  background: rgba(148, 163, 184, 0.2);
  color: var(--text-secondary);
}

.badge-success {
  background: rgba(16, 185, 129, 0.2);
  color: #10b981;
}

.badge-warning {
  background: rgba(234, 140, 85, 0.2);
  color: #fbbf24;
}

.badge-danger {
  background: rgba(220, 38, 38, 0.2);
  color: #fca5a5;
}

/* ==================== CHARTS ==================== */
.charts-section {
  padding: 24px 32px;
}

.chart-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
  gap: 16px;
}

.chart-card {
  background: linear-gradient(135deg, rgba(51, 65, 85, 0.3) 0%, rgba(30, 41, 59, 0.3) 100%);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  backdrop-filter: blur(10px);
  height: clamp(240px, 34vh, 320px);
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.chart-card .card-header {
  margin-bottom: 16px;
}

.chart-subtitle {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
}

.chart-card canvas {
  flex: 1;
  width: 100% !important;
  height: 100% !important;
  display: block;
}

.full-width {
  grid-column: 1 / -1;
  height: clamp(260px, 38vh, 360px);
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1200px) {
  .chart-grid {
    grid-template-columns: 1fr;
  }

  .metrics-grid {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  }
}

@media (max-width: 768px) {
  .topbar {
    flex-direction: column;
    gap: 16px;
    padding: 16px;
  }

  .topbar-right {
    width: 100%;
    flex-direction: column;
    gap: 12px;
  }

  .status-indicators {
    flex-direction: column;
    width: 100%;
  }

  .status-item {
    align-items: flex-start;
  }

  .controls-section {
    flex-direction: column;
    padding: 12px 16px;
    gap: 8px;
  }

  .select-input,
  .btn {
    width: 100%;
  }

  .button-group {
    width: 100%;
    flex-direction: column;
  }

  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .status-grid {
    grid-template-columns: 1fr;
    padding: 16px;
  }

  .charts-section {
    padding: 16px;
  }

  .chart-card,
  .full-width {
    height: 260px;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 13px;
  }

  .logo-section h1 {
    font-size: 22px;
  }

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

  .metric-value {
    font-size: 24px;
  }

  .topbar,
  .controls-section,
  .metrics-section,
  .status-grid,
  .charts-section {
    padding: 12px 16px;
  }
}

/* ==================== SCROLLBAR ==================== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: rgba(30, 41, 59, 0.5);
}

::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-light);
}