body.bm-bb-classic-fullpage-msg #item-header,
body.bm-bb-classic-fullpage-msg #object-nav.bp-navs.single-screen-navs {
    display: none !important;
}

body.bm-bb-classic-fullpage-msg #buddypress.buddypress-wrap > .bp-wrap {
    margin-top: 0 !important;
}

/* `.single` context bumps `.entry-title` to 32px — revert to directory size (28px). */
.single .bm-bb-classic-msg-page-header .entry-title {
    font-size: 1.75rem;
    line-height: 1.5rem;
    margin: 0;
    letter-spacing: normal;
}

/* `.bm-threads-list` is NOT part of the mini widget — it is the shared
 * conversations layout that BuddyBoss's own header Messages dropdown is
 * filled with. Hiding it here emptied that dropdown on every messages
 * screen: the popup opened with its title and its View Inbox footer and
 * nothing in between. */
body.bm-bb-classic-hide-mini .bm-wrap.bm-widget-bubble,
body.bm-bb-classic-hide-mini .bm-mini-widgets-wrap,
body.bm-bb-classic-hide-mini .bm-mini-chats-wrap,
body.bm-bb-classic-hide-mini .bm-minimize {
    display: none !important;
}

/* The header Messages popup sizes itself to whatever is put inside it:
 * `.notification-dropdown` is absolutely positioned with a `min-width` and no
 * `max-width` (400px on desktop, 330px under 543px, 280px under 380px). The
 * theme's own cap lives on `.notification-list`, and override_messages_list()
 * renames that class to `.bm-notification-list` when it injects the
 * conversations layout — so the cap stops applying and our list is left
 * deciding the popup's width.
 *
 * The list's intrinsic width is the widest row in it, and a row is as wide as
 * its longest unbroken line. `text-overflow: ellipsis` does not help: it clips
 * at paint time and leaves max-content at the full string. So one conversation
 * with a long title — twenty rows down, where nobody can even see it — pushed
 * the whole popup out to 548px against BuddyBoss's own 400px.
 *
 * `width: 0` takes the list out of that calculation entirely and `min-width:
 * 100%` puts it back at whatever the popup resolved to on its own. No number of
 * ours, so every breakpoint keeps the theme's. `.bm-mini` needs its automatic
 * minimum size released as well, or the row lays out at its own width inside
 * the narrower box and the scroller clips the name instead of ellipsing it. */
body.bm-bb-classic #header-messages-dropdown-elem .notification-dropdown .bm-notification-list {
    min-width: 0;
}

body.bm-bb-classic #header-messages-dropdown-elem .notification-dropdown .bm-notification-list > .bm-wrap.bm-threads-list {
    width: 0;
    min-width: 100%;
}

body.bm-bb-classic #header-messages-dropdown-elem .notification-dropdown .bm-notification-list .bm-mini {
    min-width: 0;
}