body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f7f8fb;
  color: #1f2937;
}

.page {
  width: 100%;
  margin: 0 auto;
  padding: 24px;
  box-sizing: border-box;
}

.hero {
  background: linear-gradient(135deg, #111827, #1f2937);
  color: white;
  padding: 28px;
  border-radius: 18px;
  margin-bottom: 20px;
}

.hero-title {
  margin: 0;
  font-size: 36px;
}

.hero-subtitle {
  margin-top: 8px;
  margin-bottom: 0;
  color: #d1d5db;
}

.control-panel {
  background: white;
  border-radius: 16px;
  padding: 18px;
  margin-bottom: 18px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.05);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.control-row {
  display: flex;
  gap: 20px;
  width: 100%;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.button-group {
  justify-content: flex-end;
}

.text-input {
  height: 38px;
  padding: 0 10px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
}

.primary-btn {
  height: 40px;
  border: none;
  border-radius: 10px;
  padding: 0 18px;
  cursor: pointer;
  font-weight: bold;
}

.status-message {
  margin: 6px 0 18px 0;
  color: #4b5563;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

.summary-card {
  background: white;
  border-radius: 16px;
  padding: 18px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.05);
}

.summary-label {
  font-size: 13px;
  color: #6b7280;
  margin-bottom: 10px;
}

.summary-value {
  font-size: 24px;
  font-weight: 700;
}

.chart-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-bottom: 20px;
  width: 100%;
}

.single-chart {
  grid-template-columns: 1fr;
}

.table-section {
  background: white;
  border-radius: 16px;
  padding: 18px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.05);
}

@media (max-width: 1000px) {
  .control-panel,
  .summary-grid,
  .chart-grid {
    grid-template-columns: 1fr;
  }
}