/* ═══════════════════════════════════════════════════════════════════
   SHARED MATERIALS BROWSER POPUP
   Exact visual match to Training-Materials.html
   ═══════════════════════════════════════════════════════════════════ */

/* ── Overlay ──
   z-index 1000040 so we land above EVERY popup layer — this is a PICKER,
   so whatever opened it must never cover it:
     • .wdp-overlay (program/engagement profile popups)  — 55000
     • .tp-overlay (task profile)                        — 60000
     • .wk-pjd-overlay (project builder drawer)          — 65000
     • _createModal & sub-modals                         — 65000
     • .ep-deliv-modal-overlay (deliverable modal)       — 999999
     • .wk-aifill-overlay (AI-fill, spawned from modals) — 1000020
   The deliverable modal jumped to 999999 to beat the Miles FAB/tooltips,
   which put it above the old 70000 ceiling — so "Link a material" opened
   BEHIND it. Sitting at 1000040 keeps the picker on top no matter which
   layer invoked it, while staying below the toast/critical tier (2000000+). */
.mb-overlay{
  position:fixed;inset:0;z-index:1000040;
  display:flex;align-items:center;justify-content:center;
  background:rgba(15,23,42,.45);
  backdrop-filter:blur(3px);-webkit-backdrop-filter:blur(3px);
  opacity:0;pointer-events:none;
  transition:opacity .22s ease;
}
.mb-overlay.is-open{opacity:1;pointer-events:auto}

/* ── Shell ── */
.mb-shell{
  /* A file browser earns the screen: at 1140 the library columns and the
     embedded SharePoint picker were both cramped in the same modal. */
  width:min(1560px,calc(100vw - 40px));
  height:min(900px,calc(100vh - 44px));
  background:var(--card,#fff);border-radius:14px;
  box-shadow:0 20px 60px rgba(0,0,0,.18),0 6px 20px rgba(0,0,0,.08);
  display:flex;flex-direction:column;overflow:hidden;
  transform:scale(.97) translateY(8px);
  transition:transform .28s cubic-bezier(.34,1.56,.64,1);
}
.mb-overlay.is-open .mb-shell{transform:scale(1) translateY(0)}

/* ── Header bar (popup-level — just title + close X) ── */
.mb-header{
  display:flex;align-items:center;gap:12px;
  padding:12px 20px;border-bottom:1px solid var(--border,#e5e7eb);
  flex-shrink:0;transition:padding .2s ease;
}
.mb-header-title{
  font-size:15px;font-weight:700;color:var(--ink,#0f172a);
  font-family:var(--f,'Inter',sans-serif);margin:0;
}
.mb-header-sub{
  font-size:12px;color:var(--ink3,#94a3b8);flex:1;
  font-family:var(--f,'Inter',sans-serif);
}
.mb-header-close{
  width:30px;height:30px;border-radius:8px;border:none;
  background:transparent;color:var(--ink3,#94a3b8);
  cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:all .18s ease;font-family:var(--f,'Inter',sans-serif);
}
.mb-header-close svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round}
.mb-header-close:hover{background:var(--border-s,#f1f5f9);color:var(--ink,#334155)}

/* ── Body (sidebar + content) — matches ph-hub ── */
.mb-body{
  flex:1;display:grid;
  grid-template-columns:200px 1fr;
  overflow:hidden;
  transition:grid-template-columns .25s ease;
}

/* ══════════════════════════════════════
   SIDEBAR — mirrors ph-sidebar from TM
   ══════════════════════════════════════ */
.mb-sidebar{
  background:var(--surf,#f8fafc);border-right:1px solid var(--border,#e5e7eb);
  padding:10px;overflow-y:auto;
  display:flex;flex-direction:column;gap:2px;
  scrollbar-width:none;transition:background .2s ease;
}
.mb-sidebar::-webkit-scrollbar{width:3px}
.mb-sidebar::-webkit-scrollbar-thumb{background:var(--border,#cbd5e1);border-radius:3px}

.mb-sb-label{
  font-size:9px;font-weight:800;text-transform:uppercase;
  letter-spacing:.6px;color:var(--ink3,#94a3b8);padding:12px 10px 4px;
  user-select:none;transition:color .2s ease;
}
.mb-sb-item{
  display:flex;align-items:center;gap:10px;
  padding:7px 10px;border-radius:10px;
  font-size:12px;font-weight:600;color:var(--ink2,#64748b);
  cursor:pointer;border:none;background:none;
  text-align:left;font-family:var(--f,'Inter',sans-serif);
  width:100%;white-space:nowrap;
  transition:all .18s cubic-bezier(.4,0,.2,1);
}
.mb-sb-item:hover{
  background:var(--border-s,#f1f5f9);color:var(--ink,#334155);
  transform:translateY(-1px);
}
.mb-sb-item.is-active{
  background:#fff;
  box-shadow:0 2px 10px rgba(0,0,0,.05);
  color:var(--c-blue,#3b82f6);font-weight:700;
}
.mb-sb-icon{
  display:flex;align-items:center;justify-content:center;
  width:18px;height:18px;flex-shrink:0;
}
.mb-sb-icon svg{
  width:16px;height:16px;stroke:currentColor;fill:none;
  stroke-width:2;stroke-linecap:round;stroke-linejoin:round;
}
.mb-sb-badge{
  margin-left:auto;min-width:18px;height:18px;
  border-radius:9px;font-size:10px;font-weight:800;
  display:inline-flex;align-items:center;justify-content:center;
  padding:0 5px;flex-shrink:0;
  transition:all .2s ease;
}
.mb-sb-badge:empty{display:none}
.mb-sb-badge--muted{
  background:var(--border-s,#e2e8f0);color:var(--ink3,#94a3b8);font-weight:700;
}
.mb-sb-badge--accent{background:var(--c-blue,#3b82f6);color:#fff}
.mb-sb-badge--warn{background:var(--c-yellow,#f59e0b);color:#fff}
.mb-sb-divider{
  height:1px;background:var(--border-s,#e2e8f0);margin:4px 10px;
  transition:background .2s ease;
}

/* ══════════════════════════════════════
   CONTENT AREA
   ══════════════════════════════════════ */
.mb-content{
  display:flex;flex-direction:column;overflow:hidden;
}

/* ── TCD Toolbar — matches Training-Materials tcd-toolbar ── */
.mb-toolbar{
  display:flex;flex-direction:column;gap:8px;
  padding:12px 16px;border-bottom:1px solid var(--border,#e5e7eb);
  background:var(--card,#fff);position:sticky;top:0;z-index:19;
  flex-shrink:0;transition:padding .2s ease, gap .2s ease;
}
/* Row 1: title + count + create + view toggle */
.mb-title-row{
  display:flex;align-items:center;gap:10px;
  transition:gap .2s ease;
}
.mb-title{
  font-size:14px;font-weight:800;color:var(--ink,#111);
  margin:0;line-height:1.3;transition:color .2s ease;
  font-family:var(--f,'Inter',sans-serif);
}
.mb-result-count{
  font-size:12px;color:var(--ink3,#94a3b8);font-weight:600;white-space:nowrap;
  transition:color .2s ease;font-family:var(--f,'Inter',sans-serif);
}
.mb-title-right{
  display:flex;align-items:center;gap:8px;margin-left:auto;
  transition:gap .2s ease;
}
/* Create/Add dropdown */
.mb-create-wrap{position:relative}
.mb-create-btn{
  display:inline-flex;align-items:center;gap:5px;
  padding:6px 14px;border-radius:8px;border:none;
  background:var(--c-blue,#3b82f6);color:#fff;
  font-size:11.5px;font-weight:700;cursor:pointer;
  font-family:var(--f,'Inter',sans-serif);
  transition:all .18s ease;white-space:nowrap;
}
.mb-create-btn svg{width:12px;height:12px;stroke:currentColor;fill:none;stroke-width:2.5}
.mb-create-btn:hover{filter:brightness(1.1);transform:translateY(-1px)}
.mb-create-menu{
  position:absolute;right:0;top:100%;margin-top:6px;
  width:220px;background:var(--card,#fff);border-radius:12px;
  box-shadow:0 10px 36px rgba(0,0,0,.16);border:1px solid var(--border,#e5e7eb);
  padding:6px;z-index:90;
  opacity:0;transform:translateY(6px) scale(.97);
  pointer-events:none;transition:opacity .18s ease, transform .18s ease;
}
.mb-create-menu.is-open{
  opacity:1;transform:translateY(0) scale(1);pointer-events:auto;
}
.mb-create-menu-item{
  display:flex;align-items:center;gap:10px;
  padding:9px 12px;border-radius:8px;border:none;
  background:none;width:100%;text-align:left;
  cursor:pointer;font-family:var(--f,'Inter',sans-serif);
  font-size:12.5px;font-weight:600;color:var(--ink,#334155);
  transition:all .15s ease;
}
.mb-create-menu-item:hover{background:var(--border-s,#f1f5f9);color:var(--c-blue,#3b82f6)}
.mb-create-menu-icon{
  width:28px;height:28px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.mb-create-menu-icon svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2}
/* View toggle — matches tcd-view-toggle */
.mb-view-toggle{
  display:inline-flex;gap:2px;background:var(--bg-2,#f9fafb);
  border-radius:8px;padding:2px;transition:background .2s ease;
}
.mb-view-btn{
  width:32px;height:32px;border-radius:6px;border:1px solid transparent;
  background:transparent;color:var(--ink3,#9ca3af);cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:all .2s ease;
}
.mb-view-btn:hover{color:var(--ink,#111)}
.mb-view-btn.is-active{
  background:var(--card,#fff);border-color:var(--border,#e5e7eb);
  color:var(--c-blue,#3b82f6);box-shadow:0 1px 3px rgba(0,0,0,.06);
}
.mb-view-btn svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2}

/* Row 2: search + AI toggle + filter button */
.mb-action-row{
  display:flex;align-items:center;gap:8px;
  transition:gap .2s ease;
}
/* Search bar — matches tcd-search */
.mb-search-bar{
  display:flex;align-items:center;gap:8px;
  background:var(--bg-2,#f9fafb);border:1px solid var(--border,#e5e7eb);
  border-radius:10px;padding:8px 14px;flex:1;min-width:200px;max-width:380px;
  transition:border-color .2s ease, box-shadow .2s ease;
}
.mb-search-bar:focus-within{
  border-color:var(--c-blue,#2563eb);
  box-shadow:0 0 0 3px rgba(37,99,235,.08);
}
.mb-search-bar svg{width:15px;height:15px;color:var(--ink3,#9ca3af);flex-shrink:0}
.mb-search-bar input{
  background:none;border:none;outline:none;color:var(--ink,#111);
  font-size:12.5px;width:100%;font-family:var(--f,'Inter',sans-serif);
}
.mb-search-bar input::placeholder{color:var(--ink3,#9ca3af);transition:opacity .3s ease}
/* AI search bar transform */
.mb-search-bar.mb-search--ai{
  border-color:#7c3aed;
  background:linear-gradient(135deg,rgba(99,102,241,.08),rgba(139,92,246,.05));
  box-shadow:0 0 0 3px rgba(99,102,241,.14),0 0 20px rgba(99,102,241,.06);
}
.mb-search-bar.mb-search--ai > svg:first-child{color:#7c3aed}
.mb-search-bar.mb-search--ai input{color:#312e81}
.mb-search-bar.mb-search--ai input::placeholder{color:#6366f1;opacity:.65}
/* AI toggle — matches tcd-ai-toggle */
.mb-ai-toggle{
  position:relative;display:inline-flex;align-items:center;gap:5px;
  height:30px;flex-shrink:0;cursor:pointer;
  background:var(--bg-3,#e5e7eb);border:1.5px solid var(--border,#d1d5db);
  border-radius:8px;padding:0 10px;transition:all .28s ease;
  user-select:none;
}
.mb-ai-toggle .mb-ai-knob{
  width:16px;height:16px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  transition:all .28s ease;
}
.mb-ai-toggle .mb-ai-knob svg{width:12px;height:12px;color:#9ca3af;transition:color .28s}
.mb-ai-toggle .mb-ai-label{
  font-size:10px;font-weight:800;letter-spacing:.5px;
  color:var(--ink3,#9ca3af);text-transform:uppercase;
  transition:color .28s;pointer-events:none;white-space:nowrap;
}
.mb-ai-toggle::after{
  content:'Search with AI';
  position:absolute;bottom:-22px;left:50%;transform:translateX(-50%);
  font-size:9px;font-weight:600;color:var(--ink3,#9ca3af);
  white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .2s;
}
.mb-ai-toggle:hover::after{opacity:1}
.mb-ai-toggle.is-on{
  background:linear-gradient(135deg,#6366f1,#8b5cf6);
  border-color:#6366f1;box-shadow:0 2px 10px rgba(99,102,241,.3);
}
.mb-ai-toggle.is-on .mb-ai-knob svg{color:#fff}
.mb-ai-toggle.is-on .mb-ai-label{color:#fff}
.mb-ai-toggle.is-on::after{content:'AI Mode Active';color:#7c3aed}
/* Filter button — matches tcd-filter-btn */
.mb-filter-wrap{position:relative}
.mb-filter-btn{
  display:flex;align-items:center;justify-content:center;gap:4px;
  background:var(--card,#fff);border:1px solid var(--border,#e5e7eb);
  border-radius:8px;color:var(--ink2,#6b7280);font-size:11.5px;
  width:30px;height:30px;padding:0;cursor:pointer;outline:none;
  font-family:var(--f,'Inter',sans-serif);font-weight:600;
  transition:border-color .2s ease, box-shadow .2s ease, color .2s ease;
  position:relative;
}
.mb-filter-btn svg{width:12px;height:12px}
.mb-filter-btn:hover,.mb-filter-btn:focus{
  border-color:var(--c-blue,#2563eb);
  box-shadow:0 0 0 3px rgba(37,99,235,.08);
}
.mb-filter-badge{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:14px;height:14px;padding:0 4px;
  border-radius:7px;background:var(--c-blue,#2563eb);color:#fff;
  font-size:8px;font-weight:800;
  position:absolute;top:-3px;right:-3px;
}
/* Filter panel dropdown — matches tcd-filter-panel */
.mb-filter-panel{
  position:absolute;right:0;top:100%;margin-top:6px;
  width:280px;max-height:380px;
  background:var(--card,#fff);border-radius:14px;
  box-shadow:0 10px 36px rgba(0,0,0,.16);border:1px solid var(--border,#e5e7eb);
  padding:10px 12px 12px;z-index:90;
  opacity:0;transform:translateY(6px) scale(.97);
  pointer-events:none;transition:opacity .18s ease, transform .18s ease;
  overflow-y:auto;
}
.mb-filter-panel.is-open{
  opacity:1;transform:translateY(0) scale(1);pointer-events:auto;
}
.mb-fp-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.mb-fp-title{font-weight:800;font-size:11px;color:var(--ink,#111)}
.mb-fp-clear{
  border:none;background:transparent;font-size:10px;
  cursor:pointer;color:var(--c-blue,#2563eb);text-decoration:underline;
  padding:2px 6px;border-radius:999px;font-family:var(--f,'Inter',sans-serif);
  transition:background .15s ease;
}
.mb-fp-clear:hover{background:rgba(37,99,235,.06);text-decoration:none}
.mb-fp-group{margin-bottom:8px}
.mb-fp-group:last-child{margin-bottom:0}
.mb-fp-group-title{
  font-weight:700;font-size:9px;text-transform:uppercase;
  letter-spacing:.4px;color:var(--ink3,#9ca3af);margin-bottom:4px;
}
.mb-fp-options{display:flex;flex-wrap:wrap;gap:4px}
.mb-fp-option{
  display:flex;align-items:center;gap:5px;
  font-size:10.5px;padding:4px 8px;border-radius:8px;
  background:var(--bg-2,#f9fafb);cursor:pointer;transition:all .2s ease;
  user-select:none;border:1px solid transparent;
}
.mb-fp-option:hover{border-color:var(--border,#e5e7eb);background:var(--card,#fff)}
.mb-fp-option.is-checked{
  background:rgba(37,99,235,.08);border-color:rgba(37,99,235,.2);
  color:var(--c-blue,#2563eb);
}
.mb-fp-option input{accent-color:var(--c-blue,#3b82f6);width:12px;height:12px;cursor:pointer}

/* ══════════════════════════════════════
   LIST VIEW — mirrors ch-material-row
   ══════════════════════════════════════ */
.mb-list{
  flex:1;overflow-y:auto;padding:0;
  scrollbar-width:thin;
}
.mb-list::-webkit-scrollbar{width:4px}
.mb-list::-webkit-scrollbar-thumb{background:var(--border,#cbd5e1);border-radius:3px}

.mb-material-row{
  display:flex;align-items:flex-start;gap:14px;
  padding:12px 20px;cursor:pointer;
  transition:background .18s ease, border-color .18s ease, transform .15s ease;
  border-bottom:1px solid var(--border-s,#f8fafc);
  border-left:3px solid transparent;
}
.mb-material-row:last-child{border-bottom:none}
.mb-material-row:hover{background:var(--border-s,#f8fafc);transform:translateX(2px)}
.mb-material-row.is-selected{
  background:rgba(59,130,246,.06);
  border-left-color:var(--c-blue,#3b82f6);
}
.mb-material-row.is-disabled{opacity:.4;pointer-events:none}

/* Checkbox */
.mb-row-check{
  accent-color:var(--c-blue,#3b82f6);
  width:16px;height:16px;cursor:pointer;
  flex-shrink:0;margin-top:2px;transition:transform .15s ease;
}
.mb-row-check:hover{transform:scale(1.1)}

/* Icon: 38×38 — matches ch-material-icon */
.mb-material-icon{
  width:38px;height:38px;border-radius:var(--radius-sm,8px);
  background:#f3f2f1;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;flex-shrink:0;color:var(--ink3,#6b7280);
  overflow:hidden;transition:transform .2s ease;
}
.mb-material-row:hover .mb-material-icon{transform:scale(1.05)}
.mb-material-icon img{width:100%;height:100%;object-fit:cover}
.mb-material-icon svg{width:16px;height:16px;stroke:currentColor;stroke-width:1.5;fill:none;stroke-linecap:round;stroke-linejoin:round}

/* Body */
.mb-material-body{flex:1;min-width:0}
.mb-material-top{
  display:flex;align-items:center;gap:10px;margin-bottom:4px;
}
.mb-material-title{
  font-size:14px;font-weight:600;color:var(--ink,#161616);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  flex:1;min-width:0;
  font-family:var(--f,'Inter',sans-serif);
  transition:color .15s ease;
}
.mb-material-row:hover .mb-material-title{color:var(--c-blue,#3b82f6)}
.mb-material-badge{
  flex-shrink:0;padding:2px 8px;border-radius:6px;
  font-size:10px;font-weight:600;
  text-transform:uppercase;letter-spacing:.5px;
  transition:all .2s ease;
}
.mb-material-badge--sop{background:#dbeafe;color:#1e40af}
.mb-material-badge--pdf{background:#fce7f3;color:#9d174d}
.mb-material-badge--vid{background:#ede9fe;color:#5b21b6}
.mb-material-badge--dash{background:#d1fae5;color:#065f46}
.mb-material-badge--asset{background:#fef3c7;color:#92400e}
.mb-material-badge--default{background:var(--border-s,#f1f5f9);color:var(--ink2,#64748b)}

.mb-material-meta{
  font-size:12px;color:var(--ink3,#94a3b8);margin-bottom:6px;
  font-family:var(--f,'Inter',sans-serif);transition:color .2s ease;
}

/* Connection tags */
.mb-material-connections{display:flex;flex-wrap:wrap;gap:4px;align-items:center}
.mb-conn-tag{
  display:inline-flex;align-items:center;gap:3px;
  padding:2px 8px;border-radius:10px;
  font-size:11px;font-weight:500;white-space:nowrap;
  border:1px solid transparent;transition:all .15s ease;
}
.mb-conn-tag:hover{transform:translateY(-1px)}
.mb-conn-tag--page{background:#ede9fe;color:#5b21b6}
.mb-conn-tag--workflow{background:#d1fae5;color:#065f46}
.mb-conn-tag--role{background:#dbeafe;color:#1e40af}
.mb-conn-tag--dept{background:#fef3c7;color:#92400e}
.mb-conn-tag--path{background:#fce7f3;color:#9d174d}
.mb-conn-tag--kit{background:#e0e7ff;color:#3730a3}
.mb-conn-tag--tool{background:#ccfbf1;color:#0f766e}
.mb-conn-tag--more{background:var(--border-s,#f1f5f9);color:var(--ink3,#94a3b8);font-size:10px}

/* Right column — connection count */
.mb-material-right{
  display:flex;flex-direction:column;align-items:flex-end;gap:6px;
  flex-shrink:0;
}
.mb-conn-count{
  display:inline-flex;align-items:center;gap:4px;
  font-size:12px;font-weight:600;color:var(--ink2,#525252);
  transition:color .2s ease;
}
.mb-conn-count svg{width:14px;height:14px;flex-shrink:0}
.mb-conn-count--zero{color:var(--c-yellow,#f59e0b)}
.mb-conn-health{width:8px;height:8px;border-radius:50%;flex-shrink:0;transition:background .2s ease}
.mb-conn-health--healthy{background:var(--c-green,#16a34a)}
.mb-conn-health--stale{background:var(--c-yellow,#f59e0b)}
.mb-conn-health--none{background:var(--ink3,#94a3b8)}

/* ══════════════════════════════════════
   CARD VIEW — mirrors tm-mat-card
   ══════════════════════════════════════ */
.mb-grid{
  flex:1;overflow-y:auto;padding:14px 20px;
  display:grid;
  /* Auto-fill responsive tiles — ~5 across in the full-width panel, reflowing
     down to 4 / 3 / 2 / 1 as the panel narrows. Matches the Training-Materials
     card grid (repeat(auto-fill, minmax(...))) instead of a fixed 3 columns. */
  grid-template-columns:repeat(auto-fill,minmax(165px,1fr));
  gap:14px;align-content:start;
  scrollbar-width:thin;
}
.mb-grid::-webkit-scrollbar{width:4px}
.mb-grid::-webkit-scrollbar-thumb{background:var(--border,#cbd5e1);border-radius:3px}

.mb-material-card{
  background:var(--card,#fff);border:1px solid var(--border,#e5e7eb);border-radius:8px;
  cursor:pointer;transition:box-shadow .25s ease, transform .2s ease, border-color .2s ease;
  overflow:hidden;display:flex;flex-direction:column;
  position:relative;min-width:0;
}
.mb-material-card:hover{
  box-shadow:0 12px 32px rgba(0,0,0,.12),0 2px 6px rgba(0,0,0,.06);
  transform:translateY(-4px);
}
.mb-material-card.is-selected{
  border-color:var(--c-blue,#3b82f6);
  box-shadow:0 0 0 2px rgba(59,130,246,.2);
}
.mb-material-card.is-disabled{opacity:.4;pointer-events:none}

/* Card header — gradient block */
.mb-card-header{
  position:relative;
  padding:28px 16px 20px;
  display:flex;flex-direction:column;
  align-items:center;justify-content:center;
  min-height:100px;overflow:hidden;
}
/* Thumbnail image in card */
.mb-card-header .mb-thumb-img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  z-index:1;transition:opacity .3s ease;
}
/* SVG preview in card */
.mb-card-header .mb-prev-svg{
  width:56px;height:70px;position:relative;z-index:0;
  filter:drop-shadow(0 2px 8px rgba(0,0,0,.15));flex-shrink:0;
  transition:transform .3s ease;
}
.mb-material-card:hover .mb-prev-svg{transform:scale(1.05)}
/* Status dot — top-right corner of header */
.mb-status-dot{
  position:absolute;top:10px;right:10px;
  width:10px;height:10px;border-radius:50%;
  border:2px solid rgba(255,255,255,.5);z-index:3;
  transition:transform .2s ease;
}
.mb-status-dot[data-lvl="high"]{background:#fca5a5;border-color:rgba(255,255,255,.6)}
.mb-status-dot[data-lvl="med"]{background:#fcd34d;border-color:rgba(255,255,255,.6)}
.mb-status-dot[data-lvl="good"]{background:#86efac;border-color:rgba(255,255,255,.6)}
.mb-status-dot[data-lvl="low"]{background:rgba(255,255,255,.35)}
/* Type chip in card header */
.mb-card-type-chip{
  margin-top:10px;font-size:10px;font-weight:800;
  text-transform:uppercase;letter-spacing:.6px;
  color:rgba(255,255,255,.9);
  background:rgba(255,255,255,.15);
  padding:3px 10px;border-radius:6px;
  backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);
  position:relative;z-index:2;transition:background .2s ease;
}
.mb-material-card:hover .mb-card-type-chip{background:rgba(255,255,255,.25)}

/* Connection dots in card */
.mb-card-dots{
  display:flex;align-items:center;gap:4px;
  margin-top:auto;padding-top:8px;
}
.mb-card-dot{
  width:7px;height:7px;border-radius:50%;opacity:.7;
  transition:transform .15s ease, opacity .15s ease;
}
.mb-material-card:hover .mb-card-dot{opacity:1;transform:scale(1.15)}
.mb-card-dot-more{
  font-size:9px;font-weight:800;color:var(--ink3,#94a3b8);margin-left:2px;
}

/* Card body */
.mb-card-body{
  padding:14px 16px 14px;
  display:flex;flex-direction:column;gap:4px;flex:1;
}
.mb-card-title{
  font-size:13px;font-weight:700;color:var(--ink,#111);
  line-height:1.4;overflow:hidden;text-overflow:ellipsis;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
  font-family:var(--f,'Inter',sans-serif);
  transition:color .15s ease;
}
.mb-material-card:hover .mb-card-title{color:var(--c-blue,#3b82f6)}
.mb-card-sub{
  font-size:11px;color:var(--ink3,#9ca3af);font-weight:500;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
/* Optional meta line shown by the shared MaterialCard.buildHTML renderer
   (source label + modified date). */
.mb-card-meta{
  font-size:10.5px;color:var(--ink3,#9ca3af);font-weight:500;
  margin-top:auto;padding-top:6px;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
/* Read-only variant used by attached-doc grids (grants, programs, tasks).
   The whole wrap is the click target — keep the inner card hover effect. */
.mb-material-card--readonly{ cursor:default; }
/* Wrapper anchors/divs that contain a single MaterialCard pass through
   block layout + remove default link styling. */
.gr-doc-card-wrap, .ep-doc-card-wrap, .docs-card-link{
  display:block;color:inherit;text-decoration:none;cursor:pointer;
}
.gr-doc-card-wrap .mb-material-card,
.ep-doc-card-wrap .mb-material-card,
.docs-card-link .mb-material-card{
  cursor:pointer;
}

/* Card checkbox */
.mb-card-check{
  position:absolute;top:8px;left:8px;z-index:3;
  accent-color:var(--c-blue,#3b82f6);
  width:16px;height:16px;cursor:pointer;
  transition:transform .15s ease;
}
.mb-card-check:hover{transform:scale(1.15)}

/* ── Empty state ── */
.mb-empty{
  padding:40px;text-align:center;
  font-size:14px;color:var(--ink3,#94a3b8);font-style:italic;
  font-family:var(--f,'Inter',sans-serif);
}

/* ── Footer (selection bar) ── */
.mb-footer{
  display:flex;align-items:center;justify-content:space-between;
  padding:10px 20px;border-top:1px solid var(--border,#e5e7eb);flex-shrink:0;
  transition:padding .2s ease;
}
.mb-footer-count{
  font-size:12px;font-weight:600;color:var(--ink2,#64748b);
  font-family:var(--f,'Inter',sans-serif);
}
.mb-btn{
  padding:8px 20px;border-radius:8px;border:none;
  font-size:13px;font-weight:600;cursor:pointer;
  transition:all .18s ease;font-family:var(--f,'Inter',sans-serif);
}
.mb-btn--primary{background:var(--c-blue,#3b82f6);color:#fff}
.mb-btn--primary:hover{filter:brightness(1.1);transform:translateY(-1px)}
.mb-btn--primary:disabled{opacity:.45;cursor:default;filter:none;transform:none}

/* ── Responsive ── */
@media(max-width:900px){
  .mb-body{grid-template-columns:1fr}
  .mb-sidebar{display:none}
  .mb-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}
}
@media(max-width:600px){
  .mb-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr))}
}

/* ══════════════════════════════════════════════════════════════════
   SIDEBAR SOURCE ITEMS
   ══════════════════════════════════════════════════════════════════ */
.mb-sb-icon--brand{
  width:20px;height:20px;border-radius:4px;overflow:visible;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
}
.mb-sb-icon--brand svg{width:18px;height:18px}
.mb-sb-source-label{
  flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;
}
.mb-sb-source.is-active{
  background:linear-gradient(135deg,rgba(99,102,241,.08),rgba(139,92,246,.05));
  box-shadow:0 2px 10px rgba(99,102,241,.08);
  color:#6366f1;font-weight:700;
}
.mb-sb-source--dim{opacity:.55}
.mb-sb-source--dim:hover{opacity:.85}
.mb-sb-badge--connected{
  display:inline-flex;align-items:center;justify-content:center;
  margin-left:auto;width:18px;height:18px;flex-shrink:0;
  border-radius:50%;background:#dcfce7;color:#16a34a;
}

/* ══════════════════════════════════════════════════════════════════
   CONNECT PROMPT (shown for unconnected providers)
   ══════════════════════════════════════════════════════════════════ */
.mb-browse-connect-prompt{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:40px 32px;text-align:center;gap:12px;
}
.mb-browse-connect-logo{
  width:64px;height:64px;border-radius:16px;
  display:flex;align-items:center;justify-content:center;
  background:var(--bg-2,#f0f4f8);
  box-shadow:0 4px 16px rgba(0,0,0,.08);
  border:1px solid var(--border,#e5e7eb);
}
.mb-browse-connect-logo svg{width:40px;height:40px}
.mb-browse-connect-title{
  font-size:18px;font-weight:700;color:var(--ink,#111);
  font-family:var(--f,'Inter',sans-serif);margin:8px 0 0;
}
.mb-browse-connect-desc{
  font-size:13px;color:var(--ink2,#64748b);max-width:380px;
  line-height:1.5;font-family:var(--f,'Inter',sans-serif);margin:0;
}
.mb-browse-connect-benefits{
  display:flex;flex-direction:column;gap:8px;margin:12px 0 8px;
  text-align:left;
}
.mb-browse-connect-benefit{
  display:flex;align-items:center;gap:8px;
  font-size:12px;color:var(--ink2,#64748b);
  font-family:var(--f,'Inter',sans-serif);
}
.mb-browse-connect-benefit svg{flex-shrink:0;color:var(--c-blue,#3b82f6)}
.mb-browse-connect-btn{
  margin-top:8px;min-width:180px;
}
.mb-browse-connect-back{
  margin-top:6px;
}

/* ══════════════════════════════════════════════════════════════════
   BROWSE STORAGE PANEL (inline within materials browser)
   ══════════════════════════════════════════════════════════════════ */
.mb-browse-panel{
  flex:1;display:flex;flex-direction:column;overflow:hidden;
}
.mb-browse-header{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 16px;border-bottom:1px solid var(--border,#e5e7eb);flex-shrink:0;
}
.mb-browse-header-left{
  display:flex;align-items:center;gap:10px;flex:1;min-width:0;
}
.mb-browse-badge{
  width:32px;height:32px;border-radius:10px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:var(--bg-2,#f9fafb);border:1px solid var(--border,#e5e7eb);
  overflow:visible;
}
.mb-browse-badge svg{width:22px;height:22px}
.mb-browse-back-btn{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:8px;border:1px solid var(--border,#e5e7eb);
  background:var(--card,#fff);color:var(--ink2,#64748b);
  font-size:11.5px;font-weight:600;cursor:pointer;
  font-family:var(--f,'Inter',sans-serif);
  transition:all .18s ease;white-space:nowrap;flex-shrink:0;
}
.mb-browse-back-btn:hover{
  border-color:var(--c-blue,#2563eb);color:var(--c-blue,#2563eb);
  box-shadow:0 0 0 3px rgba(37,99,235,.08);
}
.mb-browse-back-btn svg{flex-shrink:0}

/* Breadcrumbs */
.mb-browse-breadcrumb{
  display:flex;align-items:center;gap:4px;flex-wrap:wrap;
  font-size:11px;color:var(--ink3,#94a3b8);margin-top:2px;
}
.mb-browse-sep{color:var(--ink3,#94a3b8);font-size:12px;opacity:.5}
.mb-browse-crumb{
  color:var(--ink2,#64748b);text-decoration:none;font-weight:500;
  transition:color .15s;
}
.mb-browse-crumb:hover{color:var(--c-blue,#3b82f6)}
.mb-browse-crumb--active{color:var(--ink,#111);font-weight:600}

/* Search row */
.mb-browse-search-row{
  display:flex;align-items:center;gap:10px;
  padding:8px 16px;border-bottom:1px solid var(--border-s,#f1f5f9);flex-shrink:0;
}
.mb-browse-search{flex:1;max-width:360px}
.mb-browse-select-all{
  display:flex;align-items:center;gap:6px;
  font-size:11px;font-weight:600;color:var(--ink2,#64748b);
  cursor:pointer;user-select:none;margin-left:auto;
}
.mb-browse-select-all input{accent-color:var(--c-blue,#3b82f6);width:14px;height:14px;cursor:pointer}

/* ── Upload-to-this-folder button + tray ── */
.mb-browse-upload-btn{
  margin-left:auto;display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:8px;border:1px solid var(--border,#e5e7eb);
  background:var(--card,#fff);color:var(--ink,#111);
  font-size:12px;font-weight:600;cursor:pointer;white-space:nowrap;
  font-family:var(--f,'Inter',sans-serif);transition:all .18s ease;
}
.mb-browse-upload-btn:hover{border-color:var(--c-blue,#3b82f6);color:var(--c-blue,#2563eb);box-shadow:0 2px 6px rgba(59,130,246,.15)}
.mb-browse-upload-btn.is-active{background:var(--c-blue,#3b82f6);color:#fff;border-color:var(--c-blue,#3b82f6)}
.mb-browse-upload-btn:disabled{opacity:.45;cursor:default;box-shadow:none;color:var(--ink2,#94a3b8);border-color:var(--border,#e5e7eb)}
.mb-browse-upload-btn svg{flex-shrink:0}

.mb-upload-tray{
  padding:16px;border-bottom:1px solid var(--border-s,#f1f5f9);flex-shrink:0;
  background:var(--bg-2,#f9fafb);
}
.mb-upload-inner{max-width:560px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.mb-upload-drop{
  display:flex;flex-direction:column;align-items:center;gap:6px;
  padding:22px 16px;border-radius:12px;cursor:pointer;
  border:2px dashed var(--border,#d1d5db);background:var(--card,#fff);
  color:var(--ink2,#64748b);transition:all .16s ease;text-align:center;
}
.mb-upload-drop:hover,.mb-upload-drop:focus-visible{border-color:var(--c-blue,#3b82f6);color:var(--c-blue,#2563eb);outline:none}
.mb-upload-drop.is-over{border-color:var(--c-blue,#3b82f6);background:rgba(59,130,246,.06);color:var(--c-blue,#2563eb)}
.mb-upload-drop-text{font-size:13px;font-weight:600;color:var(--ink,#111)}
.mb-upload-drop-text strong{font-weight:700}
.mb-upload-pick{color:var(--c-blue,#2563eb);text-decoration:underline;font-weight:600}
.mb-upload-hint{font-size:11px;color:var(--ink2,#94a3b8)}
.mb-upload-chosen{display:flex}
.mb-upload-chip{
  display:inline-flex;align-items:center;gap:10px;width:100%;
  padding:10px 12px;border-radius:10px;border:1px solid var(--border,#e5e7eb);
  background:var(--card,#fff);
}
.mb-upload-chip-ic{flex-shrink:0;display:inline-flex}
.mb-upload-chip-ic svg{width:22px;height:22px}
.mb-upload-chip-name{flex:1;font-size:13px;font-weight:600;color:var(--ink,#111);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mb-upload-chip-size{font-size:11px;font-weight:600;color:var(--ink2,#94a3b8);flex-shrink:0}
.mb-upload-chip-x{
  flex-shrink:0;width:22px;height:22px;border-radius:6px;border:none;cursor:pointer;
  background:var(--bg-2,#f1f5f9);color:var(--ink2,#64748b);font-size:16px;line-height:1;
}
.mb-upload-chip-x:hover{background:#fee2e2;color:#dc2626}
.mb-upload-field{display:flex;flex-direction:column;gap:5px}
.mb-upload-lbl{font-size:11px;font-weight:700;letter-spacing:.02em;text-transform:uppercase;color:var(--ink2,#64748b)}
.mb-upload-lbl em{font-style:normal;font-weight:500;text-transform:none;letter-spacing:0;color:var(--ink2,#94a3b8)}
.mb-upload-field input{
  padding:9px 12px;border-radius:8px;border:1px solid var(--border,#d1d5db);
  font-size:13px;font-family:var(--f,'Inter',sans-serif);background:var(--card,#fff);color:var(--ink,#111);
}
.mb-upload-field input:focus{outline:none;border-color:var(--c-blue,#3b82f6);box-shadow:0 0 0 3px rgba(59,130,246,.14)}
.mb-upload-dest{font-size:12px;color:var(--ink2,#64748b)}
.mb-upload-dest strong{color:var(--ink,#111);font-weight:600}
.mb-upload-note{font-size:12px;line-height:1.5;padding:9px 12px;border-radius:8px}
.mb-upload-note--err{background:#fef2f2;color:#b91c1c;border:1px solid #fecaca}
.mb-upload-reconnect{
  margin-left:4px;padding:2px 10px;border-radius:6px;border:1px solid currentColor;
  background:transparent;color:inherit;font-size:11px;font-weight:700;cursor:pointer;
}
.mb-upload-reconnect:hover{background:rgba(185,28,28,.08)}
.mb-upload-actions{display:flex;align-items:center;gap:10px}
.mb-upload-status{flex:1;font-size:12px;font-weight:600;color:var(--ink2,#64748b)}
.mb-upload-cancel{background:var(--bg-2,#f1f5f9);color:var(--ink2,#475569)}
.mb-upload-cancel:hover{background:var(--border,#e5e7eb)}

/* Sub-tabs (SharePoint | OneDrive | Teams within Microsoft group) */
.mb-browse-subtabs{
  display:flex;align-items:center;gap:4px;
  padding:8px 16px;border-bottom:1px solid var(--border,#e5e7eb);flex-shrink:0;
  background:var(--bg-2,#f9fafb);
}
.mb-browse-subtab{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 16px;border-radius:8px;border:1px solid transparent;
  background:transparent;color:var(--ink2,#64748b);
  font-size:12px;font-weight:600;cursor:pointer;
  font-family:var(--f,'Inter',sans-serif);
  transition:all .18s ease;white-space:nowrap;
}
.mb-browse-subtab:hover{background:var(--card,#fff);color:var(--ink,#111);border-color:var(--border,#e5e7eb)}
.mb-browse-subtab.is-active{
  background:var(--card,#fff);color:var(--c-blue,#2563eb);
  box-shadow:0 2px 6px rgba(0,0,0,.06);border-color:var(--border,#e5e7eb);
  font-weight:700;
}
.mb-browse-subtab-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:16px;height:16px;flex-shrink:0;
}
.mb-browse-subtab-icon svg{width:16px;height:16px}

/* Message */
.mb-browse-msg{
  padding:24px 16px;text-align:center;
  font-size:13px;color:var(--ink3,#94a3b8);font-style:italic;
  font-family:var(--f,'Inter',sans-serif);
}

/* File list */
.mb-browse-list{
  flex:1;overflow-y:auto;padding:0;scrollbar-width:thin;
}
.mb-browse-list::-webkit-scrollbar{width:4px}
.mb-browse-list::-webkit-scrollbar-thumb{background:var(--border,#cbd5e1);border-radius:3px}

/* SharePoint-style column grid: checkbox | icon | name (flex) | modified |
   modified by | size | actions. Header and rows share the same template so
   columns line up. Narrower viewports drop the modified-by then size cells. */
.mb-browse-colhead,
.mb-browse-row{
  display:grid;
  grid-template-columns: 28px 32px minmax(0, 1fr) 150px 160px 90px 76px;
  align-items:center; column-gap:12px;
  padding:0 16px;
}
.mb-browse-colhead{
  height:34px; flex-shrink:0;
  background:#fff;
  border-bottom:1px solid var(--border,#e5e7eb);
  position:sticky; top:0; z-index:2;
  font-family:var(--f,'Inter',sans-serif);
}
.mb-browse-col{
  font-size:11.5px; font-weight:600; color:var(--ink2,#64748b);
  letter-spacing:.01em;
  display:flex; align-items:center; gap:4px;
  text-align:left; background:transparent; border:0; padding:0;
  font-family:inherit;
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
}
.mb-browse-colsort{ cursor:pointer; transition:color .15s; }
.mb-browse-colsort:hover{ color:var(--ink,#111); }
.mb-browse-colsort.is-active{ color:var(--ink,#111); }
.mb-browse-col--size{ justify-content:flex-end; text-align:right; }
.mb-browse-col--actions{ pointer-events:none; }
/* Sort arrow appears only on the active column */
.mb-browse-sortarrow{ width:8px; height:8px; opacity:0; transition:opacity .15s, transform .15s; }
.mb-browse-colsort.is-active .mb-browse-sortarrow{ opacity:1; }
.mb-browse-sortarrow::before{
  content:""; display:block; width:0; height:0;
  border-left:4px solid transparent; border-right:4px solid transparent;
  border-bottom:5px solid currentColor;
}
.mb-browse-colsort.is-desc .mb-browse-sortarrow{ transform:rotate(180deg); }

.mb-browse-row{
  height:42px; cursor:pointer;
  transition:background .12s ease;
  border-bottom:1px solid #f4f6f9;
  position:relative;
}
.mb-browse-row:last-child{border-bottom:none}
.mb-browse-row:hover{ background:#f6f8fa; }
.mb-browse-row--selected{
  background:#eaf3fc;
}
.mb-browse-row--selected:hover{ background:#dfeefa; }

/* Selected indicator strip on the left edge — SharePoint cue */
.mb-browse-row--selected::before{
  content:""; position:absolute; left:0; top:6px; bottom:6px; width:3px;
  background:var(--c-blue,#0078d4); border-radius:0 2px 2px 0;
}

.mb-browse-cell{ min-width:0; display:flex; align-items:center; }
.mb-browse-cell--check{ justify-content:center; }
.mb-browse-cell--icon{ justify-content:center; }
.mb-browse-cell--name{ flex-direction:column; align-items:flex-start; gap:1px; }
.mb-browse-cell--modified,
.mb-browse-cell--modby{
  font-size:12px; color:var(--ink2,#64748b);
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
  font-family:var(--f,'Inter',sans-serif);
}
.mb-browse-cell--size{
  font-size:12px; color:var(--ink2,#64748b);
  justify-content:flex-end; text-align:right;
  font-variant-numeric:tabular-nums;
  font-family:var(--f,'Inter',sans-serif);
}
.mb-browse-cell--actions{
  justify-content:flex-end; gap:4px;
  opacity:0; transition:opacity .12s ease;
}
.mb-browse-row:hover .mb-browse-cell--actions,
.mb-browse-row--selected .mb-browse-cell--actions{ opacity:1; }

/* Checkbox is always visible since it's the ONLY way to select an item
   (clicking the row body opens the file). Header checkbox = select-all. */
.mb-browse-checkbox{
  accent-color:var(--c-blue,#0078d4);
  width:16px; height:16px; cursor:pointer; flex-shrink:0;
}
.mb-browse-cell--check, .mb-browse-col--check{
  /* Bigger hit target around the checkbox so it's hard to miss */
  cursor:pointer;
}
.mb-browse-checkbox--head{ accent-color:var(--c-blue,#0078d4); }

.mb-browse-icon{
  width:24px;height:24px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  color:var(--ink3,#94a3b8);
}
.mb-browse-icon svg{ width:22px; height:22px; }
.mb-browse-row--folder .mb-browse-icon{color:#f5b900}
.mb-browse-icon--thumb{overflow:hidden;border-radius:3px;width:24px;height:24px}
.mb-browse-icon--thumb img.mb-browse-thumb-img{width:100%;height:100%;object-fit:cover}

.mb-browse-file-name{
  font-size:13px; font-weight:500; color:var(--ink,#111);
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
  font-family:var(--f,'Inter',sans-serif);
  width:100%;
}
.mb-browse-row:hover .mb-browse-file-name{ color:#0066b8; }
.mb-browse-file-sub{
  font-size:11px; color:var(--ink3,#94a3b8);
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
  width:100%;
}
.mb-browse-folder-count{
  font-size:11px;color:var(--ink3,#94a3b8);
}

/* Responsive: drop the modifiedBy then size columns on narrow viewports */
@media (max-width: 880px){
  .mb-browse-colhead, .mb-browse-row{
    grid-template-columns: 28px 32px minmax(0, 1fr) 130px 90px 76px;
  }
  .mb-browse-col--modby, .mb-browse-cell--modby{ display:none; }
}
@media (max-width: 680px){
  .mb-browse-colhead, .mb-browse-row{
    grid-template-columns: 28px 32px minmax(0, 1fr) 120px 64px;
  }
  .mb-browse-col--size, .mb-browse-cell--size{ display:none; }
}
/* Hover-revealed row actions — SharePoint shows quick actions as borderless
   ghost buttons on row hover. We match that. */
.mb-browse-arrow,
.mb-browse-preview{
  width:26px;height:26px;border-radius:4px;border:0;
  background:transparent;color:var(--ink2,#64748b);
  font-size:16px;cursor:pointer;text-decoration:none;
  display:flex;align-items:center;justify-content:center;
  transition:background .12s ease, color .12s ease;flex-shrink:0;
}
.mb-browse-arrow:hover,
.mb-browse-preview:hover{
  background:rgba(0,0,0,.06);color:var(--ink,#111);
}
.mb-browse-preview svg{display:block;}

/* Progress bar */
.mb-browse-progress{
  padding:0 16px;overflow:hidden;max-height:0;opacity:0;
  transition:max-height .3s ease, opacity .3s ease, padding .3s ease;
}
.mb-browse-progress.is-active{
  max-height:60px;opacity:1;padding:8px 16px;
}
.mb-browse-progress-bar{
  width:100%;height:6px;border-radius:3px;background:var(--border-s,#e2e8f0);
  overflow:hidden;
}
.mb-browse-progress-fill{
  height:100%;border-radius:3px;
  background:linear-gradient(90deg,#3b82f6,#6366f1);
  transition:width .3s ease;
}
.mb-browse-progress-fill.is-indeterminate{
  animation:mbBrowseIndeterminate 1.4s ease-in-out infinite;
}
@keyframes mbBrowseIndeterminate{
  0%{transform:translateX(-100%)}
  50%{transform:translateX(130%)}
  100%{transform:translateX(-100%)}
}
.mb-browse-progress-text{
  font-size:11px;color:var(--ink2,#64748b);margin-top:4px;
  font-weight:600;font-family:var(--f,'Inter',sans-serif);
}

/* Footer */
.mb-browse-footer{
  display:flex;align-items:center;justify-content:space-between;
  padding:10px 16px;border-top:1px solid var(--border,#e5e7eb);
  flex-shrink:0;background:var(--card,#fff);
}
.mb-browse-info{
  font-size:12px;color:var(--ink2,#64748b);font-weight:600;
  font-family:var(--f,'Inter',sans-serif);
}
.mb-browse-import-btn{
  min-width:140px;white-space:nowrap;
}

/* ── Upload: destination picker + the Library's own Upload button ──────────
   The tray now hangs off .mb-content (not the browse panel) so the Library can
   open it too; it sits above whichever panel is showing. */
.mb-content > .mb-upload-tray{
  position:relative;z-index:2;border-bottom:1px solid var(--border-s,#f1f5f9);
  box-shadow:0 6px 18px -12px rgba(15,23,42,.28);
}
.mb-upload-destpick{display:flex;gap:8px}
.mb-updest{
  flex:1;display:inline-flex;align-items:center;justify-content:center;gap:7px;
  padding:9px 12px;border:1px solid var(--border,#d1d5db);background:var(--card,#fff);
  color:var(--ink2,#475569);font:600 12.5px/1 inherit;cursor:pointer;
  transition:border-color .14s,background .14s,color .14s;
}
.mb-updest svg{flex:0 0 auto;opacity:.8}
.mb-updest:hover{background:var(--bg-2,#f8fafc);border-color:var(--ink4,#cbd5e1)}
.mb-updest.is-active{
  border-color:#6366f1;background:#eef2ff;color:#3730a3;
}
.mb-updest.is-active svg{opacity:1}
.mb-upload-dest-sub{color:var(--ink3,#94a3b8);font-weight:500}
.mb-upload-own-btn{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 12px;border:1px solid var(--border,#d1d5db);background:var(--card,#fff);
  color:var(--ink,#111);font:600 12.5px/1 inherit;cursor:pointer;
  transition:background .14s,border-color .14s;
}
.mb-upload-own-btn:hover{background:var(--bg-2,#f8fafc);border-color:var(--ink4,#cbd5e1)}
/* Browse-panel error block: the API's sentence + the actions that fix it. */
.mb-browse-err-t{font-weight:600;color:var(--ink,#111);line-height:1.5}
.mb-browse-err-acts{display:flex;gap:8px;justify-content:center;margin-top:12px;flex-wrap:wrap}

/* Shape-semantic: the tenant theme pins a radius on every <button>, so these
   need an id-scoped rule to keep their pill/rounded form. */
.mb-overlay .mb-updest{border-radius:10px !important}
.mb-overlay .mb-upload-own-btn{border-radius:9px !important}
/* ══════════════════════════════════════════════════════════════════════
   NATIVE SHAREPOINT PICKER (File Picker v8, in an iframe)
   The frame stays hidden until SharePoint completes its handshake — see
   materials-browser.js. `is-ready` is that signal, so a frame that never
   answered can never be shown to a user as a blank rectangle.
   ══════════════════════════════════════════════════════════════════════ */
.mb-browse-head-right{
  display:flex;align-items:center;gap:8px;flex-shrink:0;
}
.mb-classic-btn{color:var(--ink3,#94a3b8)}
.mb-ms-frame{
  flex:1;display:flex;flex-direction:column;min-height:0;
  margin:0 16px 14px;background:var(--card,#fff);
  border:1px solid var(--border,#e5e7eb);border-radius:12px;overflow:hidden;
}
.mb-ms-iframe{
  border:0;flex:1;width:100%;min-height:0;display:none;
}
.mb-ms-iframe.is-ready{display:block}
.mb-ms-loading{
  padding:64px 20px;text-align:center;
  color:var(--ink2,#64748b);font-size:12.5px;font-weight:600;
}
.mb-ms-spin{margin-bottom:12px;color:var(--c-blue,#2563eb)}
.mb-ms-spin svg{animation:mbSpin 1s linear infinite}

/* One plain line when the native picker stood down and the built-in browser
   took over. Never an AAD lecture — the actual fix goes to the console. */
.mb-native-note{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  margin:10px 16px 0;padding:8px 12px;border-radius:9px;
  border:1px solid #fde68a;background:#fffbeb;color:#92400e;
  font-size:11.5px;font-weight:600;line-height:1.45;
}

.mb-native-retry{
  margin-left:auto;flex-shrink:0;padding:4px 11px;border-radius:7px;cursor:pointer;
  border:1px solid #fcd34d;background:#fff;color:#92400e;
  font:700 11px/1 var(--f,'Inter',sans-serif);
}
.mb-native-retry:hover{background:#fef3c7}

/* ══════════════════════════════════════════════════════════════════════
   DESCRIBE IT AND WE FIND IT
   ══════════════════════════════════════════════════════════════════════ */
.mb-aif{margin:12px 16px 0;flex-shrink:0}
.mb-aif-bar{
  display:flex;align-items:center;gap:10px;
  padding:8px 10px 8px 14px;border-radius:12px;
  border:1px solid #ddd6fe;background:linear-gradient(180deg,#faf8ff,#f5f3ff);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.mb-aif-bar:focus-within{
  border-color:#8b5cf6;box-shadow:0 0 0 3px rgba(139,92,246,.12);
}
.mb-aif-spark{display:flex;color:#7c3aed;flex-shrink:0}
.mb-aif-spark svg{width:16px;height:16px}
.mb-aif-input{
  flex:1;min-width:0;border:none;background:none;outline:none;
  font-size:13px;color:var(--ink,#0f172a);
  font-family:var(--f,'Inter',sans-serif);
}
.mb-aif-input::placeholder{color:#a78bfa;font-weight:500}
.mb-aif-go{
  flex-shrink:0;padding:7px 16px;border-radius:9px;border:none;cursor:pointer;
  background:linear-gradient(135deg,#7c3aed,#6d28d9);color:#fff;
  font-size:12px;font-weight:700;font-family:var(--f,'Inter',sans-serif);
  transition:filter .18s ease,opacity .18s ease;
}
.mb-aif-go:hover{filter:brightness(1.08)}
.mb-aif-go:disabled{opacity:.6;cursor:default}

.mb-aif-out{
  margin-top:8px;border:1px solid var(--border,#e5e7eb);border-radius:12px;
  background:var(--card,#fff);overflow:hidden;
  max-height:302px;overflow-y:auto;scrollbar-width:thin;
}
.mb-aif-out::-webkit-scrollbar{width:4px}
.mb-aif-out::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:2px}
.mb-aif-head{
  display:flex;align-items:baseline;gap:8px;
  padding:9px 14px;border-bottom:1px solid var(--border,#e5e7eb);
  font-size:11px;font-weight:800;letter-spacing:.03em;text-transform:uppercase;
  color:var(--ink2,#64748b);background:var(--bg-2,#f9fafb);
}
.mb-aif-sub{
  font-size:10.5px;font-weight:600;letter-spacing:0;text-transform:none;
  color:var(--ink3,#94a3b8);
}
.mb-aif-dismiss{
  margin-left:auto;flex-shrink:0;width:20px;height:20px;padding:0;
  border:none;border-radius:6px;background:none;cursor:pointer;
  color:var(--ink3,#94a3b8);font-size:11px;line-height:1;
}
.mb-aif-dismiss:hover{background:#ede9fe;color:#6d28d9}
.mb-aif-msg{
  padding:14px;font-size:12.5px;font-weight:600;color:var(--ink2,#64748b);
  display:flex;flex-direction:column;gap:3px;
}
.mb-aif-msg--busy{color:#6d28d9}
.mb-aif-msg--err{color:#b91c1c}
.mb-aif-note{
  padding:9px 14px;border-top:1px solid var(--border,#e5e7eb);
  font-size:11.5px;font-weight:600;color:var(--ink3,#94a3b8);background:var(--bg-2,#f9fafb);
}
.mb-aif-opt{
  display:flex;align-items:center;gap:11px;width:100%;text-align:left;
  padding:10px 14px;border:none;border-bottom:1px solid var(--border,#eef2f7);
  background:none;cursor:pointer;font-family:var(--f,'Inter',sans-serif);
  transition:background .15s ease;
}
.mb-aif-opt:last-child{border-bottom:none}
.mb-aif-opt:hover{background:#faf8ff}
.mb-aif-opt-ico{
  width:32px;height:32px;border-radius:8px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:var(--bg-2,#f9fafb);border:1px solid var(--border,#e5e7eb);
  color:var(--ink2,#64748b);
}
.mb-aif-opt-ico svg{width:15px;height:15px}
.mb-aif-opt-main{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}
.mb-aif-opt-name{
  font-size:12.5px;font-weight:700;color:var(--ink,#0f172a);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:block;
}
.mb-aif-opt-meta{
  font-size:11px;font-weight:600;color:var(--ink3,#94a3b8);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:block;
}
.mb-aif-opt-why{
  font-size:11.5px;font-weight:600;color:#6d28d9;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:block;
}
.mb-aif-opt-cta{
  flex-shrink:0;padding:5px 12px;border-radius:8px;
  border:1px solid #ddd6fe;background:#f5f3ff;color:#6d28d9;
  font-size:11px;font-weight:800;
}
.mb-aif-opt:hover .mb-aif-opt-cta{background:#7c3aed;border-color:#7c3aed;color:#fff}

@media (max-width:760px){
  .mb-aif-bar{flex-wrap:wrap}
  .mb-aif-input{flex-basis:100%;order:3;padding-top:4px}
}