:root {
  --bg-dark: #0d1117;
  --card-bg: #161b22;
  --border-color: #30363d;
  --text-muted: #8b949e;
  --success-color: #3fb950;
  --danger-color: #f85149;
  --warning-color: #d29922;
}

body {
  background-color: var(--bg-dark);
  color: #e6edf3;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
}

.navbar {
  background-color: #161b22 !important;
}

.card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.card-body {
  padding: 1.25rem;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.2;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.status-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-right: 6px;
}

.status-success { color: var(--success-color); }
.status-success .status-dot { background-color: var(--success-color); }
.status-danger { color: var(--danger-color); }
.status-danger .status-dot { background-color: var(--danger-color); }
.status-warning { color: var(--warning-color); }
.status-warning .status-dot { background-color: var(--warning-color); }

.chart-container {
  position: relative;
  height: 250px;
  width: 100%;
}

.table {
  font-size: 0.875rem;
}

.table > :not(caption) > * > * {
  border-bottom-color: var(--border-color);
}

.badge {
  font-weight: 500;
  padding: 4px 8px;
}

.btn-outline-secondary {
  border-color: var(--border-color);
  color: var(--text-muted);
}

.btn-outline-secondary:hover {
  background-color: var(--border-color);
  color: #e6edf3;
}

.form-control, .form-select {
  background-color: #0d1117;
  border-color: var(--border-color);
  color: #e6edf3;
}

.form-control:focus, .form-select:focus {
  background-color: #0d1117;
  border-color: #58a6ff;
  color: #e6edf3;
  box-shadow: 0 0 0 0.2rem rgba(88, 166, 255, 0.15);
}

.modal-content {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
}

.modal-header, .modal-footer {
  border-color: var(--border-color);
}

.dataTables_wrapper .dataTables_filter input {
  background-color: #0d1117;
  border: 1px solid var(--border-color);
  color: #e6edf3;
}

.dataTables_wrapper .dataTables_length select {
  background-color: #0d1117;
  border: 1px solid var(--border-color);
  color: #e6edf3;
}

.timeline-item {
  position: relative;
  padding-left: 20px;
  border-left: 2px solid var(--border-color);
  margin-bottom: 16px;
}

.timeline-item:last-child {
  border-left-color: transparent;
}

.timeline-dot {
  position: absolute;
  left: -5px;
  top: 4px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.timeline-time {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.uptime-gauge {
  width: 200px;
  height: 200px;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .stat-value {
    font-size: 1.25rem;
  }
}