.tab-btn {
  border: 1px solid #cbd5e1;
  border-radius: 0.75rem;
  padding: 0.4rem 0.9rem;
  background: #ffffff;
  color: #0f172a;
}

.tab-btn:hover {
  background: #f8fafc;
}

.tab-active {
  border-color: #2563eb;
  color: #2563eb;
}

.rank-up {
  color: #16a34a;
}

.rank-down {
  color: #dc2626;
}

.rank-new {
  color: #ea580c;
}

.stat-card {
  border: 1px solid #e2e8f0;
  border-radius: 0.75rem;
  padding: 0.75rem;
  background: #f8fafc;
}