:root {
  --primary-color: #002868;
  /* US flag blue */
  --secondary-color: #bf0a30;
  /* US flag red */
  --success-color: #27ae60;
  --warning-color: #e67e22;
  --danger-color: #e74c3c;
  --light-color: #ecf0f1;
  --dark-color: #2c3e50;
}

body {
  background-color: #f8f9fa;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: #333;
}

.navbar-brand {
  font-weight: 700;
  color: var(--primary-color) !important;
}

.card {
  border-radius: 10px;
  border: none;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  transition: transform 0.2s;
  margin-bottom: 20px;
}

.card:hover {
  transform: translateY(-2px);
}

.card-header {
  background-color: var(--primary-color);
  color: white;
  border-radius: 10px 10px 0 0 !important;
  font-weight: 600;
}

.section-title {
  color: var(--primary-color);
  border-bottom: 2px solid var(--secondary-color);
  padding-bottom: 8px;
  margin-bottom: 20px;
  font-weight: 600;
}

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

.btn-primary:hover {
  background-color: #8b0000;
  border-color: #8b0000;
}

.summary-box {
  background: linear-gradient(135deg, #002868, #bf0a30);
  color: white;
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.summary-value {
  font-size: 1.8rem;
  font-weight: 700;
  color: white;
}

.suggestion-box {
  background-color: #e8f4fc;
  border-left: 4px solid var(--secondary-color);
  padding: 15px;
  border-radius: 0 5px 5px 0;
  margin-bottom: 15px;
}

.suggestion-box.warning {
  background-color: #fef9e7;
  border-left-color: var(--warning-color);
}

.suggestion-box.success {
  background-color: #eafaf1;
  border-left-color: var(--success-color);
}

.progress {
  height: 12px;
  border-radius: 6px;
  margin-bottom: 5px;
}

.scenario-item {
  border-left: 3px solid var(--secondary-color);
  padding: 10px 15px;
  margin-bottom: 10px;
  background-color: white;
  border-radius: 0 5px 5px 0;
}

.input-group-text {
  background-color: #f1f8ff;
  color: var(--primary-color);
  font-weight: 500;
}

.results-table th {
  background-color: var(--light-color);
  font-weight: 600;
}

.footer {
  background-color: var(--primary-color);
  color: white;
  padding: 20px 0;
  margin-top: 40px;
}

.tab-content {
  padding-top: 20px;
}

.nav-tabs .nav-link.active {
  background-color: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
  font-weight: 600;
}

.nav-tabs .nav-link {
  color: var(--primary-color);
  font-weight: 500;
}

.slider-container {
  padding: 10px 0;
}

.slider-value {
  font-weight: 600;
  color: var(--secondary-color);
}

.flag-icon {
  width: 20px;
  height: 15px;
  display: inline-block;
  margin-right: 5px;
}