.request-loading {
    position: fixed;
    inset: auto 0 max(24px, env(safe-area-inset-bottom)) 0;
    z-index: 20000;
    display: flex;
    align-items: center;
    gap: 12px;
    width: max-content;
    max-width: calc(100vw - 32px);
    margin: 0 auto;
    padding: 14px 20px;
    border: 1px solid var(--ui-line, #ddd);
    border-radius: 100px;
    background: var(--ui-surface, #fff);
    color: var(--ui-text, #20242e);
    box-shadow: 0 8px 32px #0003;
    font: 500 14px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
    pointer-events: none;
}
.request-loading[hidden] { display: none; }
.request-loading::backdrop { background: transparent; pointer-events: none; }
.request-loading__spinner {
    flex: 0 0 22px;
    width: 22px;
    height: 22px;
    border: 3px solid var(--ui-line, #ddd);
    border-top-color: var(--ui-accent, #dd4336);
    border-radius: 50%;
    animation: request-spin .75s linear infinite;
}
@keyframes request-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
    .request-loading__spinner { animation: none; }
}