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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: #0F1117;
  color: #E5E7EB;
  min-height: 100vh;
  padding: 24px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

header {
  text-align: center;
  margin-bottom: 32px;
}

header h1 {
  font-size: 28px;
  font-weight: 700;
  color: #F9FAFB;
  margin-bottom: 4px;
}

header p {
  font-size: 14px;
  color: #9CA3AF;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.metric-card {
  background: #1A1D27;
  border-radius: 12px;
  padding: 20px;
  text-align: center;
}

.metric-card .label {
  font-size: 12px;
  color: #9CA3AF;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.metric-card .value {
  font-size: 32px;
  font-weight: 700;
  color: #F9FAFB;
}

.metric-card .value.orange {
  color: #E87B5A;
}

.metric-card .value.green {
  color: #34D399;
}

.metric-card .value.red {
  color: #F87171;
}

.chart-container {
  background: #1A1D27;
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 24px;
}

.chart-wrapper {
  position: relative;
  height: 450px;
}

.legend {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: #D1D5DB;
}

.legend-color {
  width: 24px;
  height: 3px;
  border-radius: 2px;
}

#resetZoom {
  background: #374151;
  color: #D1D5DB;
  border: none;
  border-radius: 6px;
  padding: 4px 12px;
  font-size: 12px;
  cursor: pointer;
  transition: background 0.2s;
}

#resetZoom:hover {
  background: #4B5563;
}

footer {
  text-align: center;
  padding: 16px 0;
  font-size: 12px;
  color: #6B7280;
  line-height: 1.8;
}

.loading {
  text-align: center;
  padding: 100px 20px;
  color: #9CA3AF;
  font-size: 16px;
}

.error {
  text-align: center;
  padding: 100px 20px;
  color: #F87171;
  font-size: 16px;
}

@media (max-width: 768px) {
  body {
    padding: 16px;
  }

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

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

  .chart-wrapper {
    height: 300px;
  }

  .legend {
    gap: 12px;
  }

  header h1 {
    font-size: 22px;
  }
}