.fcm-saving-overlay {
    position: fixed;
    inset: 0;
    z-index: 999999;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(2px);
}

.fcm-saving-overlay.is-visible {
    display: flex;
}

.fcm-saving-box {
    width: min(92vw, 380px);
    padding: 28px 24px;
    border-radius: 22px;
    text-align: center;
    background: #ffffff;
    box-shadow: 0 24px 70px rgba(0, 0, 0, 0.28);
    border: 1px solid rgba(34, 197, 94, 0.28);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.fcm-saving-spinner {
    width: 58px;
    height: 58px;
    margin: 0 auto 15px;
    border-radius: 50%;
    border: 6px solid #dcfce7;
    border-top-color: #16a34a;
    animation: fcmSpinSaving 0.85s linear infinite;
}

.fcm-saving-title {
    font-size: 20px;
    font-weight: 800;
    color: #14532d;
    margin-bottom: 7px;
}

.fcm-saving-text {
    font-size: 14px;
    line-height: 1.45;
    color: #334155;
}

.fcm-form-saving {
    opacity: 0.82;
    pointer-events: none;
}

.fcm-button-saving,
.fcm-button-saving:disabled {
    cursor: wait !important;
    opacity: 0.78 !important;
}

@keyframes fcmSpinSaving {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}