.pwa-install-banner {
    position: fixed;
    left: 50%;
    bottom: 16px;
    transform: translateX(-50%) translateY(120%);
    z-index: 9999;
    width: min(520px, calc(100vw - 24px));
    opacity: 0;
    pointer-events: none;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.35s ease;
}

.pwa-install-banner.visible {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    pointer-events: auto;
}

.pwa-install-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    border-radius: 16px;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.18);
}

.pwa-install-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    object-fit: contain;
    flex-shrink: 0;
    background: #f8fafc;
    padding: 4px;
}

.pwa-install-text {
    flex: 1;
    min-width: 0;
}

.pwa-install-text strong {
    display: block;
    font-size: 0.95rem;
    font-weight: 700;
    color: #1e293b;
    line-height: 1.3;
}

.pwa-install-text span {
    display: block;
    margin-top: 2px;
    font-size: 0.82rem;
    color: #64748b;
    line-height: 1.35;
}

.pwa-install-action {
    flex-shrink: 0;
    border: none;
    border-radius: 999px;
    padding: 10px 16px;
    font-size: 0.85rem;
    font-weight: 700;
    color: #ffffff;
    background: linear-gradient(135deg, #4f46e5 0%, #10b981 100%);
    cursor: pointer;
    white-space: nowrap;
}

.pwa-install-action:hover {
    filter: brightness(1.05);
}

.pwa-install-close {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 50%;
    background: #f1f5f9;
    color: #64748b;
    font-size: 1.1rem;
    line-height: 1;
    cursor: pointer;
}

.pwa-install-close:hover {
    background: #e2e8f0;
    color: #334155;
}

.pwa-install-modal {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 16px;
    background: rgba(15, 23, 42, 0.45);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.pwa-install-modal.visible {
    opacity: 1;
    pointer-events: auto;
}

.pwa-install-modal-card {
    width: min(420px, 100%);
    background: #ffffff;
    border-radius: 20px 20px 16px 16px;
    padding: 24px 20px;
    transform: translateY(24px);
    transition: transform 0.3s ease;
}

.pwa-install-modal.visible .pwa-install-modal-card {
    transform: translateY(0);
}

.pwa-install-modal h3 {
    margin: 0 0 8px;
    font-size: 1.1rem;
    color: #1e293b;
}

.pwa-install-modal p {
    margin: 0 0 16px;
    font-size: 0.9rem;
    color: #64748b;
    line-height: 1.5;
}

.pwa-install-steps {
    margin: 0 0 20px;
    padding-left: 20px;
    color: #334155;
    font-size: 0.9rem;
    line-height: 1.6;
}

.pwa-install-modal-done {
    width: 100%;
    border: none;
    border-radius: 12px;
    padding: 12px;
    font-size: 0.95rem;
    font-weight: 700;
    color: #ffffff;
    background: #4f46e5;
    cursor: pointer;
}

@media (max-width: 480px) {
    .pwa-install-banner {
        bottom: 12px;
        width: calc(100vw - 16px);
    }

    .pwa-install-card {
        gap: 10px;
        padding: 12px;
    }

    .pwa-install-action {
        padding: 9px 12px;
        font-size: 0.8rem;
    }
}