.fbn{--fbn-accent:var(--brand-primary);--fbn-label-color:#8c93a3;--fbn-label-hover:#ffffff;--fbn-surface:rgb(13 16 24/90%);--fbn-border:rgb(255 255 255/12%);--fbn-ring:var(--brand-glow-subtle);--fbn-sheen:rgb(255 255 255/8%);--fbn-avatar-bg:#1c2030;--fbn-avatar-border:var(--brand-primary);position:absolute;z-index:40;left:50%;bottom:calc(12px + env(safe-area-inset-bottom, 0px));transform:translateX(-50%);width:calc(100% - 24px);max-width:410px;pointer-events:none;-webkit-user-select:none;-moz-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent;transition:width .3s var(--ease-apple-spring,cubic-bezier(.16,1,.3,1))}.fbn,.fbn *,.fbn :after,.fbn :before{box-sizing:border-box}.fbn[data-condensed=true]{width:min(max(260px,var(--fbn-condensed-content-width,270px)),calc(100% - 24px))}.fbn__surface{position:relative;display:flex;align-items:center;justify-content:space-around;width:100%;padding:6px 8px;overflow:visible;border-radius:999px;background:var(--fbn-surface);border:1px solid var(--fbn-border);box-shadow:inset 0 1px 1px 0 rgba(255,255,255,.25),0 16px 40px rgb(0 0 0/60%),0 0 0 1px var(--fbn-ring);backdrop-filter:blur(36px) saturate(180%);-webkit-backdrop-filter:blur(36px) saturate(180%);pointer-events:auto;transition:padding .3s var(--ease-apple-spring,cubic-bezier(.16,1,.3,1))}.fbn[data-condensed=true] .fbn__surface{padding:5px 12px}.fbn__sheen{position:absolute;inset:0 0 auto;height:45%;border-radius:999px 999px 0 0;background:linear-gradient(to bottom,var(--fbn-sheen),transparent);pointer-events:none}.fbn__item{position:relative;z-index:1;min-width:0;min-height:44px;flex:1 1 0;border:0;border-radius:999px;background:transparent;color:var(--fbn-label-color);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;padding:3px 2px;cursor:pointer;font-family:inherit;text-decoration:none;transition:color .22s ease,background-color .22s ease,flex .3s var(--ease-apple-spring,cubic-bezier(.16,1,.3,1)),padding .3s var(--ease-apple-spring,cubic-bezier(.16,1,.3,1)),transform .12s var(--ease-apple-instant,cubic-bezier(0,0,.2,1))}.fbn__item:active:not(:disabled){transform:scale(.94)}.fbn[data-condensed=true] .fbn__item{flex:0 0 42px;width:42px;padding:6px 2px}.fbn__item:not([data-active=true]):hover:not(:disabled){color:var(--fbn-label-hover);background:rgb(255 255 255/6%)}.fbn__item[data-active=true]{color:#ffffff;font-weight:700;background:var(--fbn-active-bg,rgba(124,164,252,.18));box-shadow:0 1px 3px rgb(0 0 0/20%)}.fbn__item[data-active=true] .fbn__icon{color:var(--prominent-color,#7ca4fc)}.fbn__item:focus-visible{outline:2px solid var(--fbn-accent);outline-offset:2px}.fbn__item:disabled{cursor:not-allowed;opacity:.45}.fbn__icon-wrap{position:relative;flex:0 0 20px;display:flex}.fbn__icon,.fbn__icon-wrap{width:20px;height:20px;align-items:center;justify-content:center}.fbn__icon{display:inline-flex;transition:transform .2s ease}.fbn__item:hover .fbn__icon{transform:translateY(-1px)}.fbn__active-dot{position:absolute;top:-3px;right:-3px;width:5px;height:5px;background:var(--brand-primary);border-radius:50%;box-shadow:0 0 6px var(--brand-glow);animation:fbn-pulse 2s ease-in-out infinite}.fbn__item--prominent{overflow:visible}.fbn__item--prominent .fbn__icon-wrap{width:44px;height:44px;flex:0 0 44px;border-radius:50%;background:linear-gradient(135deg,var(--brand-gradient-from) 0,var(--brand-gradient-via) 50%,var(--brand-gradient-to) 100%)!important;box-shadow:0 4px 18px var(--brand-glow),inset 0 1px 1px rgba(255,255,255,.45);border:1.5px solid rgba(255,255,255,.35);margin-top:-10px;transition:transform .22s var(--ease-apple-spring,cubic-bezier(.16,1,.3,1)),box-shadow .22s ease}.fbn__item--prominent:active:not(:disabled) .fbn__icon-wrap{transform:scale(.95) translateY(0)}.fbn__item--prominent .fbn__icon{width:22px;height:22px;color:#ffffff!important}.fbn__item--prominent:hover .fbn__icon-wrap{transform:scale(1.08) translateY(-2px);box-shadow:0 8px 24px var(--brand-glow),inset 0 1px 1px rgba(255,255,255,.55)}.fbn__item--prominent[data-active=true]{background:transparent;box-shadow:none}.fbn__item--prominent[data-active=true] .fbn__icon-wrap{transform:scale(1.05) translateY(-1px);box-shadow:0 0 0 3px var(--brand-glow-subtle),0 6px 22px var(--brand-ember)}.fbn__item--prominent .fbn__active-dot{display:none}.fbn[data-condensed=true] .fbn__item--prominent .fbn__icon-wrap{margin-top:-6px;width:38px;height:38px;flex:0 0 38px}.fbn__label{display:block;width:100%;max-height:15px;margin-top:1px;overflow:hidden;color:inherit;font-size:10px;font-weight:600;line-height:1.2;letter-spacing:-.01em;text-align:center;text-overflow:ellipsis;white-space:nowrap;opacity:1;transition:opacity .2s ease,max-height .2s ease,margin-top .2s ease}.fbn[data-condensed=true] .fbn__label{max-height:0;margin-top:-4px;opacity:0}@keyframes fbn-pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.9)}}@media (prefers-reduced-motion:reduce){.fbn,.fbn *,.fbn :after,.fbn :before{transition-duration:0s!important;animation:none!important}}.fbn-content-clearance{padding-bottom:calc(96px + env(safe-area-inset-bottom, 0px))!important}