/* Chat occupies the existing sixth navigation slot; no floating trigger. */
aside.sidebar #navigation>.chat-nav-button.chat-trigger{position:relative;inset:auto;z-index:auto;display:flex;align-items:center;justify-content:center;gap:5px;flex:1 1 0;width:auto;height:auto;min-width:0;min-height:50px;margin:0;border:1px solid transparent;border-radius:3px;box-shadow:none;background:none}
aside.sidebar #navigation>.chat-nav-button[hidden]{display:none!important}
aside.sidebar #navigation>.chat-nav-button>.chat-nav-label{position:static;inset:auto;display:block;margin:0;padding:0;border:0;border-radius:0;background:none;color:inherit;font:12px/1.3 Georgia,serif}
aside.sidebar #navigation>.chat-nav-button>.chat-nav-unread{position:absolute;inset:4px auto auto calc(50% + 10px);margin:0;padding:0 4px;min-width:16px;border:1px solid #ae8c4e88;border-radius:4px;background:linear-gradient(#71562d,#3d3019);color:#f4dfad;font:600 10px/15px Arial,sans-serif;box-shadow:0 1px 4px #0008}
aside.sidebar #navigation>.chat-nav-button>.chat-nav-unread[hidden]{display:none!important}
@media(max-width:700px){aside.sidebar #navigation>.chat-nav-button{flex-direction:column;gap:3px}aside.sidebar #navigation>.chat-nav-button>.chat-nav-label{font-size:11px}}
@media(max-height:520px) and (orientation:landscape){aside.sidebar #navigation>.chat-nav-button{flex-direction:row;min-height:38px}}