.install-app-prompt {
    position: fixed;
    inset: auto 16px 16px auto;
    z-index: 5000;
    width: min(390px, calc(100vw - 32px));
    padding: 18px;
    border: 1px solid rgba(159, 0, 56, .14);
    border-radius: 16px;
    background: #fff;
    color: #252b46;
    box-shadow: 0 18px 48px rgba(159, 0, 56, .24);
    font-family: "Segoe UI", Arial, sans-serif;
    opacity: 0;
    transform: translateY(18px);
    pointer-events: none;
    transition: opacity .22s ease, transform .22s ease;
}

.install-app-prompt.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.install-app-heading {
    display: flex;
    align-items: center;
    gap: 12px;
}

.install-app-heading img {
    width: 52px;
    height: 52px;
    object-fit: contain;
    border-radius: 12px;
    background: #f4f6fb;
    padding: 7px;
}

.install-app-heading strong,
.install-app-heading span {
    display: block;
}

.install-app-heading strong {
    color: #9f0038;
    font-size: 16px;
}

.install-app-heading span,
.install-app-help {
    margin-top: 3px;
    color: #6b7280;
    font-size: 12px;
    line-height: 1.45;
}

.install-app-actions {
    display: flex;
    justify-content: flex-end;
    gap: 9px;
    margin-top: 15px;
}

.install-app-actions button {
    width: auto;
    margin: 0;
    padding: 9px 14px;
    border: 0;
    border-radius: 8px;
    cursor: pointer;
    font: 700 12px/1.2 "Segoe UI", Arial, sans-serif;
}

.install-app-dismiss {
    background: #eef0f7 !important;
    color: #454b62 !important;
}

.install-app-confirm {
    background: #9f0038 !important;
    color: #fff !important;
}

html[dir="rtl"] .install-app-prompt {
    inset: auto auto 16px 16px;
    direction: rtl;
}

@media (max-width: 600px) {
    .install-app-prompt {
        inset: auto 10px 10px 10px;
        width: auto;
    }

    html[dir="rtl"] .install-app-prompt {
        inset: auto 10px 10px 10px;
    }
}