.button-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.5rem 0;
}

.btn-primary,
.btn-secondary,
.btn-success,
.btn-danger,
.btn-warning,
.btn-info,
.btn-link {
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1rem;
  transition: opacity 0.2s;
}

.btn-primary { background-color: #007bff; color: white; }
.btn-secondary { background-color: #6c757d; color: white; }
.btn-success { background-color: #28a745; color: white; }
.btn-danger { background-color: #dc3545; color: white; }
.btn-warning { background-color: #ffc107; color: #212529; }
.btn-info { background-color: #17a2b8; color: white; }
.btn-link {
  background: none;
  color: #007bff;
  text-decoration: underline;
  padding: 0;
}

.btn-primary:hover { opacity: 0.9; }
.btn-link:hover { text-decoration: none; }