/* BU gốc toàn app (BU-SPLIT 03) — ô chọn BU ở rail trái + lớp che workspace chưa tách. js/app-bu.js */

/* ── ô chọn ở rail (nền tối của sidebar) ── */
#app-bu { padding: 8px 8px 4px; border-bottom: 1px solid rgba(255, 255, 255, .08); }
#app-bu[hidden] { display: none; }
#app-bu .app-bu-btn {
  display: flex; align-items: center; gap: 8px; width: 100%; padding: 6px 8px;
  background: rgba(255, 255, 255, .04); border: 1px solid rgba(255, 255, 255, .10); border-radius: 8px;
  color: #e5e7eb; font-family: inherit; text-align: left; cursor: pointer; white-space: nowrap;
}
#app-bu .app-bu-btn:hover { background: #374151; border-color: rgba(255, 255, 255, .18); }
#app-bu .app-bu-btn:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(37, 99, 235, .55); }
#app-bu .app-bu-ab {
  flex: none; display: grid; place-items: center; width: 24px; height: 24px; border-radius: 8px;
  background: var(--bu); color: #fff; font-size: 12px; font-weight: 700;
}
#app-bu .app-bu-tx { flex: 1; min-width: 0; display: flex; flex-direction: column; line-height: 1.25; }
#app-bu .app-bu-tx small { font-size: 10.5px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: #9ca3af; }
#app-bu .app-bu-tx b { font-size: 13px; font-weight: 700; color: #fff; overflow: hidden; text-overflow: ellipsis; }
#app-bu .app-bu-tx span { font-size: 12px; color: #cbd5e1; overflow: hidden; text-overflow: ellipsis; }
#app-bu .app-bu-chev { flex: none; display: flex; color: #9ca3af; }
/* rail thu gọn 56px: chỉ còn ô chữ cái giữa tâm; rê chuột bung rail thì hiện đủ */
body.ws-sidebar-collapsed #app-bu { padding: 8px 0 4px; }
body.ws-sidebar-collapsed #app-bu .app-bu-btn { width: 40px; margin: 0 auto; padding: 7px 0; justify-content: center; }
body.ws-sidebar-collapsed #app-bu .app-bu-tx,
body.ws-sidebar-collapsed #app-bu .app-bu-chev { display: none; }
body.ws-sidebar-collapsed.ws-rail-hover #app-bu { padding: 8px 8px 4px; }
body.ws-sidebar-collapsed.ws-rail-hover #app-bu .app-bu-btn { width: 100%; padding: 6px 8px; justify-content: flex-start; }
body.ws-sidebar-collapsed.ws-rail-hover #app-bu .app-bu-tx,
body.ws-sidebar-collapsed.ws-rail-hover #app-bu .app-bu-chev { display: flex; }

/* ── menu chọn BU (nổi cạnh rail) ── */
.app-bu-menu {
  position: fixed; z-index: 1200; width: 248px; padding: 4px; background: #fff; border: 1px solid #ECECEE;
  border-radius: 12px; box-shadow: 0 18px 50px rgba(22, 32, 51, .16);
  font-family: 'Public Sans', 'Be Vietnam Pro', 'Figtree', system-ui, sans-serif; color: #18181B;
}
.app-bu-menu .app-bu-mh,
.app-bu-menu .app-bu-mg { padding: 8px 8px 4px; font-size: 10.5px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: #6B6B72; }
.app-bu-menu .app-bu-mg { border-top: 1px solid #ECECEE; margin-top: 4px; }
.app-bu-menu .app-bu-mi {
  display: flex; align-items: center; gap: 8px; width: 100%; padding: 8px; border: 0; border-radius: 8px;
  background: transparent; font: inherit; text-align: left; cursor: pointer; color: inherit;
}
.app-bu-menu .app-bu-mi:hover,
.app-bu-menu .app-bu-mi:focus-visible { background: #F4F6FF; outline: none; }
.app-bu-menu .app-bu-mi.on { background: #E5EDFF; }
.app-bu-menu .app-bu-mi:disabled { opacity: .55; cursor: progress; }
.app-bu-menu .app-bu-mi i { flex: none; width: 8px; height: 8px; border-radius: 99px; }
.app-bu-menu .app-bu-mi span { flex: 1; min-width: 0; display: flex; flex-direction: column; line-height: 1.3; }
.app-bu-menu .app-bu-mi b { font-size: 13px; font-weight: 700; }
.app-bu-menu .app-bu-mi small { font-size: 12px; color: #6B6B72; }
.app-bu-menu .app-bu-mi svg { flex: none; color: #2563EB; }
.app-bu-menu .app-bu-err { margin: 4px; padding: 8px; border-radius: 8px; background: #FEF2F2; color: #B42318; font-size: 12px; }
.app-bu-menu .app-bu-err[hidden] { display: none; }

/* ── che workspace chưa tách khi đang ở Phân phối ── */
body.app-bu-wait .workspace.active { visibility: hidden; }
.app-bu-wait-ov {
  position: fixed; top: 0; right: 0; bottom: 0; left: var(--ws-sidebar-width, 220px); z-index: 95;
  display: grid; place-items: center; padding: 24px; background: #F1F1F3;
  font-family: 'Public Sans', 'Be Vietnam Pro', 'Figtree', system-ui, sans-serif; color: #18181B;
}
body.ws-sidebar-collapsed .app-bu-wait-ov { left: var(--ws-sidebar-collapsed, 56px); }
body.ws-sidebar-collapsed.ws-rail-hover .app-bu-wait-ov { left: var(--ws-sidebar-width, 220px); }
@media (max-width: 768px) { .app-bu-wait-ov { left: var(--ws-sidebar-collapsed, 56px); } }
.app-bu-wait-ov .app-bu-card {
  max-width: 520px; padding: 32px; background: #fff; border-radius: 16px; box-shadow: 0 2px 18px rgba(20, 20, 25, .05);
  border-left: 4px solid #2563EB; text-align: left;
}
.app-bu-wait-ov .app-bu-card-ic { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 12px; background: #E5EDFF; color: #2563EB; }
.app-bu-wait-ov h2 { margin: 16px 0 8px; font-size: 18px; font-weight: 700; letter-spacing: -.01em; }
.app-bu-wait-ov p { margin: 0; font-size: 14px; line-height: 1.6; color: #52525B; }
.app-bu-wait-ov .app-bu-card-act { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.app-bu-wait-ov .app-bu-b {
  padding: 8px 16px; border-radius: 8px; border: 1px solid #D4D4D8; background: #fff; color: #18181B;
  font: inherit; font-size: 13px; font-weight: 700; cursor: pointer;
}
.app-bu-wait-ov .app-bu-b:hover { background: #F4F6FF; }
.app-bu-wait-ov .app-bu-b-pri { background: #2563EB; border-color: #2563EB; color: #fff; }
.app-bu-wait-ov .app-bu-b-pri:hover { background: #1D4ED8; }
.app-bu-wait-ov .app-bu-b:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(37, 99, 235, .35); }