.bottom-nav.hidden { display: none; }
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-around;
    background: var(--bg, #111);
    border-top: 1px solid var(--border, #333);
    padding: 4px 0;
    z-index: 1000;
    max-width: 600px;
    margin: 0 auto;
}
.nav-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    background: none;
    border: none;
    color: var(--text, #888);
    font-size: 0.65em;
    padding: 4px 0;
    cursor: pointer;
    position: relative;
    min-width: 0;
    flex: 1;
    font-family: var(--sans, inherit);
}
.nav-btn.active {
    color: var(--accent, #4CAF50);
}
.nav-btn svg {
    flex-shrink: 0;
}
.nav-badge {
    position: absolute;
    top: 0;
    right: calc(50% - 16px);
    background: #ff4444;
    color: white;
    font-size: 0.7em;
    min-width: 16px;
    height: 16px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
}
.nav-badge.hidden { display: none; }