:root{--bottom-nav-height:calc(80px + env(safe-area-inset-bottom,0px));--keyboard-inset:0px;--bottom-clearance:calc(var(--bottom-nav-height) + 16px)}
html{scroll-padding-bottom:var(--bottom-clearance)}
body{padding-bottom:var(--bottom-clearance)}
.app-shell{padding-top:env(safe-area-inset-top,0px)}
.bottom-nav{position:fixed;inset:auto 0 0;z-index:30;background:#fff9f3;border-top:1px solid #dfcde3;box-shadow:0 -4px 20px #6042770b;padding:6px max(8px,env(safe-area-inset-right,0px)) max(10px,env(safe-area-inset-bottom,0px)) max(8px,env(safe-area-inset-left,0px))}
.bottom-nav-inner{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;max-width:1084px;margin:auto}
.bottom-nav button{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;min-height:64px;min-width:0;border:0;border-radius:14px;background:transparent;color:#715781;padding:6px 0;font-size:12px;line-height:1.4}
.bottom-nav button[aria-current=page]{background:#eee0f5;color:#593080;font-weight:600}
.bottom-nav button[aria-current=page] svg{fill:#d6b7ea;stroke-width:2}
.bottom-nav button:active{background:#e4d3ee}
.bottom-nav button:focus-visible{outline-offset:0}
.nav-icon{position:relative;display:block;width:25px;height:25px}
.nav-icon svg{display:block;width:100%;height:100%;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;fill:none}
.nav-label{max-width:100%;overflow-wrap:normal;text-align:center}
.bottom-nav #mail-badge,.bottom-nav #letters-badge{position:absolute;left:17px;top:-5px;min-width:19px;height:19px;padding:0 4px;border-radius:10px;background:#68408a;color:#fff;border:2px solid #fff9f3;font-size:10px;line-height:15px;white-space:nowrap}
#toast{bottom:calc(var(--bottom-clearance) + var(--keyboard-inset));z-index:40}
@media(min-width:761px){.bottom-nav button{font-size:14px}.bottom-nav-inner{max-width:780px}}
@media(prefers-reduced-motion:reduce){.bottom-nav button{transition:none}}