/**
 * Shared loading spinner (same visual as search.php infinite-scroll overlay).
 * Use .loading-spinner for the ring; .loading-overlay for full-page; .loading-state for inline sections.
 */

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.8);
    z-index: 9999;
    display: none;
    justify-content: center;
    align-items: center;
}

.loading-spinner {
    display: inline-block;
    width: 50px;
    height: 50px;
    border: 4px solid #f3f4f6;
    border-top: 4px solid #2563eb;
    border-radius: 50%;
    animation: loading-spin 1s linear infinite;
    box-sizing: border-box;
    flex-shrink: 0;
    vertical-align: middle;
}

.loading-spinner--sm {
    width: 22px;
    height: 22px;
    border-width: 3px;
    border-top-width: 3px;
}

.loading-spinner--xs {
    width: 14px;
    height: 14px;
    border-width: 2px;
    border-top-width: 2px;
}

@keyframes loading-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Alias so existing @keyframes spin callers keep working if needed */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-state {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 20px;
    color: #6b7280;
    text-align: center;
}

.loading-state.hidden,
.loading.hidden,
.licenses-loading.hidden {
    display: none !important;
}

/* Section loaders that toggle via .hidden */
.loading:not(.hidden),
.licenses-loading:not(.hidden) {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 16px 12px;
    color: #6b7280;
    text-align: center;
}

/* Keep spinner centered inside load-more / action buttons */
button .loading-spinner,
.btn .loading-spinner,
.load-more-btn .loading-spinner {
    margin-right: 2px;
}