.bottom-nav{z-index:1000;background:var(--background-secondary);border-top:1px solid var(--border);padding:var(--spacing-sm) 0;padding-bottom:calc(var(--spacing-sm) + env(safe-area-inset-bottom));box-shadow:var(--shadow-sm);transition:transform .3s;display:none;position:fixed;bottom:0;left:0;right:0}[data-theme=dark] .bottom-nav{background:var(--background-secondary);border-top:1px solid var(--border);box-shadow:var(--shadow-sm)}.bottom-nav-container{justify-content:space-around;align-items:center;max-width:600px;margin:0 auto;padding:0 1rem;display:flex}.bottom-nav-item{color:var(--neutral-600);cursor:pointer;border-radius:var(--radius-full);background:0 0;border:none;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:.35rem;padding:.6rem;transition:all .2s cubic-bezier(.4,0,.2,1);display:flex;position:relative;overflow:hidden}.bottom-nav-item:active{background:var(--hover-bg);transform:scale(.96)}[data-theme=dark] .bottom-nav-item:active{background:#ffffff08}.bottom-nav-item.active{color:#fff;background:var(--primary-600)}.bottom-nav-item.active .bottom-nav-icon{transform:translateY(-2px)}.bottom-nav-icon{justify-content:center;align-items:center;transition:transform .2s;display:flex}.bottom-nav-label{letter-spacing:.01em;text-transform:uppercase;opacity:.8;font-size:.65rem;font-weight:700}.bottom-nav-item.active .bottom-nav-label{opacity:1}@media (max-width:768px){.bottom-nav{display:block}}