.carbon-section{text-align:center;padding:20px}.carbon-value{font-size:2.5rem;font-weight:700;color:#28a745;margin:15px 0}.carbon-description{color:#6c757d;font-size:.9rem;line-height:1.4}.loading{display:none;text-align:center;margin:20px 0}.spinner{border:4px solid #f3f3f3;border-top:4px solid #28a745;border-radius:50%;width:40px;height:40px;animation:spin 1s linear infinite;margin:0 auto}@keyframes spin{0%{transform:rotate(0deg)}100%{transform:rotate(360deg)}}