.bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 52px;
    background: var(--surface-secondary);
    border-top: 1px solid var(--border-default);
    padding: 0 8px;
    padding-bottom: var(--sa-bottom);
    z-index: var(--z-sticky);
    align-items: center;
    justify-content: space-around;
}

@media (max-width: 820px) {
    .bottom-nav {
        display: flex;
    }
    /* Hide desktop action buttons on mobile */
    .tab-actions .tab-browse-files,
    .tab-actions .tab-app-tunnel,
    .tab-actions .tab-vscode-tunnel,
    .tab-actions .tab-attach-image,
    .tab-actions .tab-voice-input,
    .tab-actions .tab-sticky-note {
        display: none !important;
    }
}

.bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    padding: 6px 12px;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 10px;
    font-family: var(--font-sans);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: color var(--duration-fast) var(--ease-default);
    -webkit-tap-highlight-color: transparent;
    min-width: 48px;
}

.bottom-nav-item:active {
    background: var(--accent-soft);
}

.bottom-nav-item.active {
    color: var(--accent-default);
}

.bottom-nav-item svg {
    width: 20px;
    height: 20px;
}

.bottom-nav-item .nav-label {
    font-size: 10px;
    line-height: 1;
}