:root { --brand-color: #008088; }

/* small spinner used by action buttons */
.btn-spinner {
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    vertical-align: middle;
    margin-right: 8px;
    animation: btn-spin 0.8s linear infinite;
}
@keyframes btn-spin { to { transform: rotate(360deg); } }