:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --secondary: #64748b;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --bg: #0f172a;
  --card-bg: #1e293b;
  --border: #334155;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --shadow: rgba(0, 0, 0, 0.3);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  padding: 20px;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
}

header {
  text-align: center;
  margin-bottom: 40px;
  padding: 30px 0;
  border-bottom: 2px solid var(--border);
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 10px;
  background: linear-gradient(135deg, var(--primary) 0%, #3b82f6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  color: var(--text-muted);
  font-size: 1.1rem;
}

.controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
  gap: 20px;
  flex-wrap: wrap;
}

.refresh-controls {
  display: flex;
  align-items: center;
  gap: 15px;
}

.auth-controls {
  display: flex;
  gap: 10px;
}

.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 6px;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

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

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
  background: var(--secondary);
  color: white;
}

.btn-secondary:hover {
  background: #475569;
}

input[type="password"] {
  padding: 10px 15px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--card-bg);
  color: var(--text);
  font-size: 0.95rem;
  min-width: 200px;
}

input[type="password"]:focus {
  outline: none;
  border-color: var(--primary);
}

.last-updated {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.error-message {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--danger);
  color: var(--danger);
  padding: 15px 20px;
  border-radius: 8px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.error-message::before {
  content: '⚠';
  font-size: 1.3rem;
}

.error-message.hidden {
  display: none;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.metric-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 25px;
  box-shadow: 0 2px 8px var(--shadow);
  transition: transform 0.2s;
}

.metric-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px var(--shadow);
}

.metric-card h3 {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 10px;
}

.metric-value {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 5px;
}

.metric-subtext {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.chart-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 25px;
  box-shadow: 0 2px 8px var(--shadow);
}

.chart-card-wide {
  grid-column: 1 / -1;
}

.chart-card h3 {
  color: var(--text);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.chart-stats {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.stat-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  color: var(--text-muted);
}

.stat-row span:first-child {
  font-weight: 500;
}

.stat-row span:nth-child(2) {
  color: var(--text);
  font-weight: 600;
}

.avg-duration {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-style: italic;
}

.data-table-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 25px;
  box-shadow: 0 2px 8px var(--shadow);
  margin-bottom: 30px;
  overflow-x: auto;
}

.data-table-card h3 {
  color: var(--text);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table thead {
  background: rgba(37, 99, 235, 0.1);
}

.data-table th {
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  color: var(--text);
  border-bottom: 2px solid var(--border);
}

.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
}

.data-table tbody tr:hover {
  background: rgba(37, 99, 235, 0.05);
}

.data-table .loading {
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
}

.success-rate {
  font-weight: 600;
}

.success-rate.good {
  color: var(--success);
}

.success-rate.warning {
  color: var(--warning);
}

.success-rate.danger {
  color: var(--danger);
}

footer {
  text-align: center;
  padding: 30px 0;
  margin-top: 40px;
  border-top: 2px solid var(--border);
  color: var(--text-muted);
  font-size: 0.9rem;
}

footer p {
  margin-bottom: 5px;
}

.endpoint-url {
  font-family: 'Courier New', monospace;
  font-size: 0.85rem;
}

@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }

  .controls {
    flex-direction: column;
    align-items: stretch;
  }

  .auth-controls {
    flex-direction: column;
  }

  input[type="password"] {
    min-width: 100%;
  }

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

  .metric-value {
    font-size: 2rem;
  }
}