.pwa-install-btn {
    padding: 10px 14px;
    border-radius: 10px;
    font-size: 0.8125rem;
    font-weight: 700;
    border: 1px solid #2563eb;
    background: #eff6ff;
    color: #2563eb;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    line-height: 1.2;
}

.pwa-install-btn:hover { background: #dbeafe; }

.pwa-update-bar {
    position: fixed;
    left: 12px;
    right: 12px;
    bottom: calc(12px + env(safe-area-inset-bottom, 0px));
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 14px;
    border-radius: 14px;
    background: #1f2937;
    color: #f9fafb;
    font-size: 0.875rem;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.pwa-update-bar button {
    flex-shrink: 0;
    padding: 8px 14px;
    border: none;
    border-radius: 8px;
    background: #2563eb;
    color: white;
    font-weight: 700;
    font-size: 0.8125rem;
    cursor: pointer;
}

.pwa-offline-badge {
    font-size: 0.6875rem;
    font-weight: 700;
    color: #6b7280;
    padding: 4px 8px;
    border-radius: 6px;
    background: #f3f4f6;
    border: 1px solid #e5e7eb;
}

.pwa-offline-badge.is-offline {
    color: #b45309;
    background: #fffbeb;
    border-color: #fcd34d;
}

@media (min-width: 768px) {
    .top-nav { flex-wrap: wrap; }
}