/* ===================================================
   Common styles shared across all pages.
   Imported globally via shell.tsx → always available.
   =================================================== */

/* --- Button loading state ---
   Add class "btn-loading" to any <a> or <button>.
   Text becomes transparent, a white spinner appears centered.
   Usage: el.classList.add("btn-loading")
*/
.btn.btn-loading.btn-loading {
  pointer-events: none;
  color: transparent !important;
  position: relative;
  filter: brightness(0.9);
}

.btn.btn-loading.btn-loading::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: btn-loading-spin 1.5s linear infinite;
}

@keyframes btn-loading-spin {
  to {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}