.pwa-install-banner {
    position: fixed;
    left: 50%;
    bottom: 20px;
    transform: translateX(-50%);
    z-index: 20000;
    width: min(680px, calc(100vw - 32px));
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--nw-space-4);
    padding: var(--nw-space-4) var(--nw-space-4);
    border: 1px solid rgba(15, 23, 42, 0.12);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 18px 48px rgba(15, 23, 42, 0.24);
    backdrop-filter: blur(12px);
}

.pwa-install-copy {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: var(--nw-space-1);
}

.pwa-install-copy strong {
    color: #0f172a;
    font-size:var(--nw-font-lg);
    line-height: 1.25;
}

.pwa-install-copy span {
    color: #475569;
    font-size:var(--nw-font-md);
    line-height: 1.45;
}

.pwa-install-actions {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    gap: var(--nw-space-2);
}

.pwa-install-actions button {
    min-height: 38px;
    padding: var(--nw-space-2) var(--nw-space-3);
    border-radius: var(--nw-radius-lg);
    font: inherit;
    font-weight: 700;
    cursor: pointer;
    white-space: nowrap;
}

.pwa-install-primary {
    border: 1px solid #1b6ec2;
    background: #1b6ec2;
    color: var(--nw-ui-on-accent);
}

.pwa-install-primary:hover,
.pwa-install-primary:focus-visible {
    background: #155ba4;
    border-color: var(--nw-ui-info-border);
}

.pwa-install-secondary {
    border: 1px solid #cbd5e1;
    background: var(--nw-ui-text-strong);
    color: #334155;
}

.pwa-install-secondary:hover,
.pwa-install-secondary:focus-visible {
    background: #f8fafc;
}

@media (max-width: 640px) {
    .pwa-install-banner {
        bottom: 12px;
        width: calc(100vw - 24px);
        align-items: stretch;
        flex-direction: column;
        gap: var(--nw-space-3);
        padding: var(--nw-space-3);
    }

    .pwa-install-actions {
        width: 100%;
    }

    .pwa-install-actions button {
        flex: 1;
    }
}