.fcm-popup-stack {
    position: fixed;
    inset-block-start: 1.25rem;
    inset-inline-end: 1.25rem;
    z-index: 1090;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    width: min(22.5rem, calc(100vw - 2.5rem));
    pointer-events: none;
}

.fcm-popup {
    position: relative;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding-block: 0.875rem;
    padding-inline: 0.875rem 2.25rem;
    background: #ffffff;
    border-inline-start: 4px solid var(--web-primary, var(--bs-primary, #1455ac));
    border-radius: 0.5rem;
    box-shadow: 0 0.5rem 1.5rem rgba(17, 24, 39, 0.18);
    color: #1f2937;
    pointer-events: auto;
    animation: fcm-popup-enter 0.2s ease-out;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.fcm-popup--leaving {
    opacity: 0;
    transform: translateY(-0.5rem);
}

.fcm-popup__image {
    flex-shrink: 0;
    width: 3.75rem;
    height: 3.75rem;
    border: 1px solid #e5e7eb;
    border-radius: 0.375rem;
    background: #f3f4f6;
    object-fit: cover;
}

.fcm-popup__content {
    min-width: 0;
}

.fcm-popup__title {
    font-weight: 600;
    font-size: 0.9375rem;
    line-height: 1.35;
    overflow-wrap: anywhere;
}

.fcm-popup__body {
    margin-top: 0.25rem;
    font-size: 0.8125rem;
    line-height: 1.45;
    color: #4b5563;
    overflow-wrap: anywhere;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.fcm-popup__close {
    position: absolute;
    inset-block-start: 0.375rem;
    inset-inline-end: 0.5rem;
    padding: 0 0.25rem;
    border: 0;
    background: transparent;
    color: #6b7280;
    font-size: 1.25rem;
    line-height: 1;
    cursor: pointer;
}

.fcm-popup__close:hover {
    color: #111827;
}

@keyframes fcm-popup-enter {
    from {
        opacity: 0;
        transform: translateY(-0.5rem);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}