/* Files gallery — same overlay pattern as side-rail.css (non-push, so it
   doesn't fight the adjustable divider), anchored right instead of left. */
.files-toggle{position:absolute;top:12px;right:12px;z-index:15;display:flex;align-items:center;gap:6px;padding:7px 12px;border:1px solid var(--line);border-radius:999px;background:var(--surface-2);color:var(--fg);font-size:13px;font-weight:600;cursor:pointer}
.files-toggle:hover{border-color:var(--primary)}
.files-overlay{position:absolute;inset:0;z-index:30;display:none;background:rgba(0,0,0,.45)}
.files-overlay.open{display:block}
.files-panel{position:absolute;top:0;right:0;bottom:0;width:320px;max-width:85%;background:var(--surface);border-left:1px solid var(--line);display:flex;flex-direction:column;padding:14px}
.files-panel-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.files-panel-header strong{font-size:14px}
.files-close{background:transparent;border:0;color:var(--muted);cursor:pointer;font-size:18px;line-height:1;padding:4px}
.files-toolbar{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:10px;min-height:32px}
.files-select-hint{color:var(--muted);font-size:12px}
/* Same pill treatment as .files-toggle/.rail-toggle (icon + text, subtle
   border, surface-2 bg) — accent-tinted to read as destructive, not a
   different visual language. */
.files-delete-btn{display:none;align-items:center;gap:6px;padding:7px 12px;border:1px solid var(--accent);border-radius:999px;background:var(--surface-2);color:var(--accent);font-size:13px;font-weight:600;cursor:pointer}
.files-delete-btn.visible{display:inline-flex}
.files-delete-btn:hover{background:var(--accent);color:#fff}
.files-grid{overflow-y:auto;display:grid;grid-template-columns:repeat(2,1fr);gap:8px}
.files-item{position:relative;aspect-ratio:1;border-radius:9px;overflow:hidden;border:2px solid transparent;background:var(--surface-2);cursor:pointer}
.files-item.selected{border-color:var(--primary)}
.files-item img{width:100%;height:100%;object-fit:cover;display:block}
.files-item .files-checkbox{position:absolute;top:6px;left:6px;width:18px;height:18px;border-radius:5px;border:1.5px solid rgba(255,255,255,.8);background:rgba(11,11,18,.5);display:flex;align-items:center;justify-content:center;z-index:2}
.files-item.selected .files-checkbox{background:var(--primary);border-color:var(--primary)}
.files-item.selected .files-checkbox::after{content:"✓";color:#0b0b12;font-size:12px;font-weight:700}
.files-item .files-title{position:absolute;left:0;right:0;bottom:0;padding:6px 8px;font-size:10px;color:#fff;background:linear-gradient(transparent,rgba(0,0,0,.75));white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.files-empty{color:var(--muted);font-size:13px;padding:12px 4px;grid-column:1/-1}