.billing-options {
  display: grid !important;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)) !important;
  gap: 12px !important;
  margin: 12px 0 !important;
}

.billing-block {
  display: flex !important;
  flex-direction: column !important;
  justify-content: center !important;
  align-items: center !important;
  border: 2px solid #000 !important; /* Always Black Border */
  border-radius: 6px !important;
  padding: 8px 6px !important; /* Very slim padding */
  cursor: pointer !important;
  background: #fff !important;
  text-align: center !important;
  transition: all 0.2s ease !important;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1) !important;
  min-height: 70px !important; /* Smaller height */
}

.billing-block:hover {
  background: #f9fafb !important;
  box-shadow: 0 4px 10px rgba(0,0,0,0.15) !important;
  transform: scale(1.03) !important; /* Light zoom */
}

.billing-block input {
  display: none !important;
}

.billing-text strong {
  display: block !important;
  font-size: 14px !important; /* Smaller title */
  font-weight: 600 !important;
  color: #000 !important;
  margin-bottom: 3px !important;
  transition: all 0.2s ease !important;
}

.billing-text span {
  font-size: 12px !important; /* Smaller price */
  color: #333 !important;
  transition: all 0.2s ease !important;
}

.billing-block:hover .billing-text strong {
  font-size: 15px !important;
  color: #2563eb !important;
}

.billing-block:hover .billing-text span {
  font-size: 13px !important;
  color: #2563eb !important;
}

.billing-block input:checked ~ .billing-text {
  background: #eff6ff !important;
  border-radius: 5px !important;
  padding: 6px !important;
  width: 100% !important;
  box-shadow: inset 0 0 4px rgba(37,99,235,0.25) !important;
}