.ba-btn {
  appearance: none;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  background: #ffffff;
  color: #111827;
  font: inherit;
  font-weight: 600;
  line-height: 1.2;
  min-height: 40px;
  padding: 10px 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  text-decoration: none;
  transition: background-color .15s ease, border-color .15s ease, color .15s ease, transform .08s ease;
}

.ba-btn:hover {
  background: #f9fafb;
  border-color: #9ca3af;
}

.ba-btn:active {
  transform: translateY(1px);
}

.ba-btn:focus-visible {
  outline: 3px solid rgba(37, 99, 235, .28);
  outline-offset: 2px;
}

.ba-btn-primary {
  background: #2563eb;
  border-color: #2563eb;
  color: #ffffff;
}

.ba-btn-primary:hover {
  background: #1d4ed8;
  border-color: #1d4ed8;
}

.ba-btn-secondary {
  background: #eef2ff;
  border-color: #c7d2fe;
  color: #1e3a8a;
}

.ba-btn-secondary:hover {
  background: #e0e7ff;
  border-color: #a5b4fc;
}

.ba-btn-danger {
  background: #dc2626;
  border-color: #dc2626;
  color: #ffffff;
}

.ba-btn-danger:hover {
  background: #b91c1c;
  border-color: #b91c1c;
}

.ba-btn-small {
  min-height: 32px;
  padding: 7px 10px;
  font-size: 13px;
}

.ba-btn:disabled,
.ba-btn[aria-disabled="true"] {
  opacity: .55;
  cursor: not-allowed;
  transform: none;
}