/**
 * Issue #11359 — Card loading overlay
 * Used on .container-card · #storageCalculationCard · #masterTotalCard
 * to give visual "loading" feedback while async data pipeline resolves
 * (Zo + Sylvain + N4 typically take 4-8s per container).
 *
 * Toggled via .is-hidden class by step2-details.js listeners:
 *   - per-card overlay → hidden on cw-tp-row-resolved (matched by data-loading-for=CN)
 *   - aggregate overlays → hidden on cw-tp-pool-done + 3s grace
 *
 * @author Olivier RAVEAU - Oliv.Ai
 */

/* Parent must be position:relative so the absolutely-positioned overlay anchors inside */
.container-card,
#storageCalculationCard,
#masterTotalCard {
    position: relative;
}

.cw-card-loading-overlay {
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.88);
    -webkit-backdrop-filter: blur(2px);
    backdrop-filter: blur(2px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    border-radius: inherit;
    transition: opacity 300ms ease, visibility 300ms ease;
    opacity: 1;
    visibility: visible;
}

.cw-card-loading-overlay.is-hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.cw-card-loading-overlay__content {
    text-align: center;
    color: #495057;
    padding: 20px;
    max-width: 320px;
}

.cw-card-loading-overlay__spinner {
    font-size: 2rem;
    color: #003366;
    margin-bottom: 12px;
    line-height: 1;
}

.cw-card-loading-overlay__title {
    font-size: 14px;
    font-weight: 600;
    margin: 8px 0 4px;
    color: #003366;
}

.cw-card-loading-overlay__hint {
    font-size: 12px;
    color: #6c757d;
    margin: 0;
    line-height: 1.4;
}

/* Reduced-motion accessibility */
@media (prefers-reduced-motion: reduce) {
    .cw-card-loading-overlay { transition: none; }
    .cw-card-loading-overlay__spinner .fa-spinner,
    .cw-card-loading-overlay__spinner .fa-bounce,
    .cw-card-loading-overlay__spinner .fa-fade {
        animation: none !important;
    }
}