/* UX3900 · scoped notebook UI, using the existing purple theme and navigation. */
.ain-body{--ain-surface:var(--surface-primary);--ain-border:var(--border-default);--ain-muted:var(--text-secondary);--ain-brand:var(--brand-primary)}
.ain-search{display:flex;align-items:end;gap:12px;margin:24px 0}.ain-search label{display:grid;gap:8px;font-size:13px;font-weight:650}.ain-search label:first-child{flex:1}.ain-search input,.ain-search select,.ain-detail textarea,.ain-detail select{width:100%;min-height:44px;border:1px solid var(--ain-border);border-radius:12px;padding:11px 14px;background:var(--ain-surface);color:inherit;font:inherit}.ain-search button,.ain-actions button,.ain-save-row button,.ain-empty button{min-height:44px;padding:10px 16px;border:1px solid var(--ain-border);border-radius:12px;background:var(--ain-surface);color:inherit;font:inherit;cursor:pointer}.ain-body button:disabled{opacity:.55;cursor:wait}.ain-body :is(button,input,select,textarea,summary):focus-visible{outline:3px solid var(--ain-brand);outline-offset:3px}
.ain-layout{display:grid;grid-template-columns:minmax(230px,.8fr) minmax(0,1.5fr);gap:24px;align-items:start}.ain-list{display:grid;gap:10px;max-height:850px;overflow:auto;padding:3px}.ain-list-label{font-size:13px;color:var(--ain-muted);padding:0 4px 8px}.ain-item{display:grid;text-align:left;gap:12px;border:1px solid var(--ain-border);border-radius:16px;padding:20px;background:var(--ain-surface);color:inherit;cursor:pointer;transition:border-color .15s,box-shadow .15s}.ain-item:hover{border-color:var(--ain-brand)}.ain-item.is-selected{border-color:var(--ain-brand);box-shadow:inset 3px 0 var(--ain-brand)}.ain-item strong{font-size:16px;line-height:1.5;overflow-wrap:anywhere}.ain-item-meta{display:flex;justify-content:space-between;gap:8px;font-size:12px;color:var(--ain-muted)}.ain-item-meta span:first-child{color:var(--ain-brand);font-weight:700}.ain-preview{font-size:13px;line-height:1.65;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;color:var(--ain-muted);overflow-wrap:anywhere}.ain-item small{font-size:12px;color:var(--ain-muted)}
.ain-detail{border:1px solid var(--ain-border);border-radius:22px;background:var(--ain-surface);padding:28px;min-width:0}.ain-detail h3{font-size:24px;line-height:1.4;margin:10px 0 14px;letter-spacing:-.6px;overflow-wrap:anywhere}.ain-detail p{line-height:1.8;white-space:pre-wrap;overflow-wrap:anywhere}.ain-evidence{margin:22px 0;border-block:1px solid var(--ain-border);padding:16px 0}.ain-evidence summary{font-size:14px;font-weight:650;cursor:pointer;min-height:30px}.ain-evidence li{font-size:14px;line-height:1.8;white-space:pre-wrap;overflow-wrap:anywhere}.ain-caption{font-size:12px;color:var(--ain-muted);line-height:1.7}.ain-detail form{display:grid;gap:18px;margin-top:24px}.ain-detail form>label{display:grid;gap:9px;font-size:14px;font-weight:650}.ain-detail textarea{resize:vertical;line-height:1.7;min-height:140px}.ain-detail form>.ain-share{display:flex;align-items:flex-start;gap:10px;padding:16px;background:var(--surface-selected);border-radius:14px}.ain-share input{margin-top:3px;width:18px;height:18px;accent-color:var(--ain-brand)}.ain-share span{display:grid;gap:6px}.ain-share small{font-size:12px;font-weight:400;color:var(--ain-muted);line-height:1.6}.ain-save-row{display:flex;align-items:center;justify-content:space-between;gap:12px}.ain-save-row>span{font-size:12px;color:var(--ain-muted)}.ain-save-row .aiw-primary{background:var(--ain-brand);color:#fff;border-color:var(--ain-brand)}.ain-actions{display:flex;flex-wrap:wrap;gap:8px;padding-top:20px;margin-top:20px;border-top:1px solid var(--ain-border)}.ain-actions button{font-size:12px}.ain-actions .ain-delete{margin-left:auto;color:var(--ain-muted)}.ain-placeholder,.ain-empty{padding:44px 24px;border:1px dashed var(--ain-border);border-radius:20px;text-align:center;line-height:1.8}.ain-placeholder{min-height:340px;display:flex;flex-direction:column;align-items:center;justify-content:center}.ain-monogram{display:grid;place-items:center;background:var(--surface-selected);color:var(--ain-brand);height:60px;width:60px;border-radius:20px;font-size:25px;font-weight:700}.ain-empty p,.ain-placeholder p{font-size:14px;color:var(--ain-muted)}.ain-admin-item{padding:20px 0;border-bottom:1px solid var(--border-default)}.ain-admin-item pre{white-space:pre-wrap;overflow-wrap:anywhere;font:inherit;line-height:1.8}.ain-admin-item summary{cursor:pointer;font-weight:650;padding:12px 0}
@media(max-width:900px){.ain-layout{grid-template-columns:1fr}.ain-list{max-height:330px}.ain-detail{padding:22px}.ain-placeholder{min-height:220px}}
@media(max-width:520px){.ain-search{flex-wrap:wrap}.ain-search label:first-child{flex-basis:100%}.ain-search label:nth-child(2){flex:1}.ain-detail{padding:18px}.ain-detail h3{font-size:21px}.ain-actions{display:grid}.ain-actions .ain-delete{margin-left:0}.ain-save-row{align-items:flex-start;flex-direction:column}.ain-save-row button{width:100%}}
@media(prefers-reduced-motion:reduce){.ain-item{transition:none}}