/* Question library (library.js): the row of buttons in game and tool editors, and its dialogs
   (📚 picker, 📥 import, 🎲 math questions). Dialogs are paper cards in the browser's top layer. */
.cg-librow { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 10px 0; }
.tool-panel .cg-librow button { padding: 8px 13px; font-size: .92rem; }
.tool-panel .cg-librow .cg-lib-main { background: var(--yellow); color: #3b2a00; border: 2px solid var(--yellow); box-shadow: 0 3px 0 #c99500; }
.cg-printframe { position: fixed; right: 0; bottom: 0; width: 0; height: 0; border: 0; visibility: hidden; }

.cg-dlg { width: min(760px, calc(100vw - 24px)); max-height: calc(100vh - 32px); max-height: calc(100dvh - 32px); padding: 0; border: 1px solid var(--line); border-radius: 10px; background: var(--paper); color: var(--ink); box-shadow: var(--shadow-lg); overflow: hidden; font: 1rem/1.5 var(--font-body); }
.cg-dlg[open] { display: flex; flex-direction: column; }
.cg-dlg::backdrop { background: rgba(20, 35, 26, .62); }
.cg-dlg-head { flex: none; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 14px 12px 20px; background: var(--chalk-texture), var(--board); color: var(--chalk); border-bottom: 6px solid var(--wood); }
.cg-dlg-head h2 { margin: 0; font-size: 1.3rem; color: var(--chalk); }
.cg-dlg .cg-x { flex: none; width: 40px; height: 40px; padding: 0; justify-content: center; border-radius: 10px; background: rgba(255,255,255,.1); color: var(--chalk); border: 2px dashed rgba(244,241,232,.35); font-size: 1.1rem; }
.cg-dlg-body { padding: 16px 20px 20px; overflow: auto; }
.cg-dlg-body > p:first-child { margin-top: 0; }
.cg-dlg .small { color: var(--muted); }
.cg-dlg select, .cg-dlg input[type=search], .cg-dlg textarea { font: 700 .95rem var(--font-body); color: var(--ink); background: #fff; border: 2px solid var(--line); border-radius: 10px; padding: 9px 12px; max-width: 100%; }
.cg-dlg textarea { width: 100%; font-weight: 600; resize: vertical; }
.cg-btn { background: #fff; color: var(--ink); border: 2px solid var(--line); box-shadow: 0 3px 0 var(--line); padding: 10px 16px; }
.cg-btn-green { background: var(--green); color: #fff; border-color: var(--green); box-shadow: 0 3px 0 #2f6a2b; }
.cg-btn:disabled { opacity: .6; cursor: wait; }
.cg-row { display: flex; flex-wrap: wrap; gap: 10px; margin: 12px 0 0; }
.cg-row[hidden] { display: none; }
.cg-a { font-weight: 800; color: var(--blue); }

/* 📚 picker */
.cg-pk-filters { display: grid; grid-template-columns: minmax(0, 2fr) repeat(3, minmax(0, 1fr)); gap: 8px; }
.cg-pk-filters select, .cg-pk-filters input { width: 100%; }
@media (max-width: 640px) { .cg-pk-filters { grid-template-columns: 1fr 1fr; } .cg-pk-q { grid-column: 1 / -1; } }
.cg-pk-count { font: 700 1.25rem var(--font-hand); color: var(--muted); margin: 12px 2px 6px; }
.cg-pk-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.cg-pk-list li { display: flex; align-items: center; gap: 10px; padding: 10px 12px; background: #fff; border: 2px solid var(--line); border-radius: 12px; }
.cg-pk-list li:hover { border-color: #f2d27a; }
.cg-pk-main { flex: 1; min-width: 0; }
.cg-pk-main b { display: block; font: 600 1.02rem/1.3 var(--font-display); overflow-wrap: anywhere; }
.cg-pk-main small { color: var(--muted); font-weight: 600; }
.cg-pk-view { flex: none; font-weight: 800; font-size: .88rem; color: var(--blue); }
.cg-pk-list .cg-btn { flex: none; padding: 8px 14px; }
.cg-pk-note { margin: 12px 2px 0; }
@media (max-width: 520px) { .cg-pk-list li { flex-wrap: wrap; } .cg-pk-main { flex-basis: 100%; } .cg-pk-list .cg-btn { margin-left: auto; } }

/* 📥 import */
.cg-drop { display: block; position: relative; padding: 18px; border: 2px dashed #c9b98f; border-radius: 12px; background: #fff8e3; text-align: center; cursor: pointer; }
.cg-drop:hover, .cg-drop:focus-within { border-color: var(--yellow); background: #fff5d1; }
.cg-drop input { position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; }
.cg-paste { display: block; margin-top: 14px; }
.cg-paste b { display: block; margin-bottom: 6px; }
.cg-im-out { margin-top: 12px; }
.cg-im-out p { margin: 6px 0; }
.cg-ok { font-weight: 800; color: #2f6a2b; }
.cg-bad { font-weight: 800; color: #9e3415; }

/* 🎲 math questions */
.cg-math-grid { display: flex; flex-wrap: wrap; gap: 10px 16px; }
.cg-math-grid label { display: flex; flex-direction: column; gap: 4px; font-weight: 800; font-size: .9rem; }
.cg-math-grid label[hidden], .cg-tables[hidden] { display: none; }
.cg-tables { border: 0; padding: 0; margin: 14px 0 0; display: flex; flex-wrap: wrap; gap: 6px; }
.cg-tables legend { font-weight: 800; font-size: .9rem; margin-bottom: 6px; padding: 0; }
.cg-tables label { cursor: pointer; }
.cg-tables input { position: absolute; opacity: 0; }
.cg-tables span { display: inline-block; min-width: 46px; text-align: center; padding: 7px 8px; border-radius: 10px; border: 2px solid var(--line); background: #fff; font-weight: 800; }
.cg-tables input:checked + span { background: var(--blue); border-color: #1f4f94; color: #fff; }
.cg-tables input:focus-visible + span { outline: 3px solid var(--yellow); }
.cg-math-preview { margin: 14px 0 0; padding: 10px 14px 10px 34px; background: #fff; border: 2px solid var(--line); border-radius: 12px; font-weight: 700; }
.cg-math-preview li { margin: 2px 0; }
.cg-math-preview b { color: #2f6a2b; margin: 0 4px; }
.cg-math-preview small { color: var(--muted); font-weight: 600; }
.cg-math-preview .cg-more { list-style: none; color: var(--muted); font-weight: 600; }

/* ✨ AI questions (aigen.js) */
.tool-panel .cg-librow .cg-lib-ai, .cg-librow .cg-lib-ai { background: #e9f3ff; border-color: #9cc6f2; color: #1f4f94; }
.cg-ai-tabs { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0 12px; border-bottom: 2px dashed var(--line); padding-bottom: 10px; }
.cg-ai-tabs button { padding: 8px 14px; border-radius: 10px; border: 2px solid var(--line); background: #fff; color: var(--ink); font-weight: 800; box-shadow: none; }
.cg-ai-tabs button[aria-selected=true] { background: var(--board); border-color: var(--board); color: var(--chalk); }
.cg-ai-pane[hidden], .cg-ai-grid label[hidden] { display: none; }
.cg-ai-field { display: block; margin: 0 0 10px; }
.cg-ai-field b { display: block; margin-bottom: 6px; }
.cg-ai-field input[type=text], .cg-ai-field select { width: 100%; font: 700 .95rem var(--font-body); color: var(--ink); background: #fff; border: 2px solid var(--line); border-radius: 10px; padding: 9px 12px; }
.cg-ai-files, .cg-ai-chars { margin: 6px 2px 10px; }
.cg-ai-files:empty, .cg-ai-chars:empty { display: none; }
.cg-linkbtn { background: none; border: 0; box-shadow: none; padding: 0; color: var(--blue); font-weight: 800; text-decoration: underline; cursor: pointer; }
.cg-ai-grid { margin-top: 4px; }
.cg-ai-check { margin-top: 10px; }
.cg-ai-check:empty { display: none; }
.cg-ai-left { align-self: center; font-weight: 700; }
.cg-ai-out { margin-top: 12px; }
.cg-ai-out p { margin: 6px 0; }
.cg-ai-warn { padding: 8px 12px; background: #fff5d1; border: 2px solid #f2d27a; border-radius: 10px; font-weight: 700; }
.cg-ai-list { margin: 10px 0 0; padding: 8px 10px 8px 34px; background: #fff; border: 2px solid var(--line); border-radius: 12px; max-height: 46vh; overflow: auto; font-weight: 600; }
.cg-ai-list li { padding: 6px 0; overflow: hidden; border-bottom: 1px dashed var(--line); }
.cg-ai-list li:last-child { border-bottom: 0; }
.cg-ai-list li > span { display: inline; }
.cg-ai-list b { color: #2f6a2b; margin: 0 4px; }
.cg-ai-list .cg-ai-term { color: var(--ink); margin: 0 6px 0 0; }
.cg-ai-list small { color: var(--muted); }
.cg-ai-ex { display: block; margin-top: 2px; }
.cg-ai-del { float: right; margin-left: 8px; width: 30px; height: 30px; padding: 0; justify-content: center; border-radius: 8px; border: 2px solid var(--line); background: #fff; color: #9e3415; box-shadow: none; font-size: .85rem; }