/* =====================================================================================================
 * GV · SOẠN CÂU HỎI / ĐỀ (web) — scripts/app/gv/authoring/* — tiền tố .edu-au-* / .edw-au-*
 * Danh sách (ngân hàng câu hỏi, đề) · màn soạn câu (3 cột) · màn soạn đề (2 cột, cột phải dính) · sheet chọn câu / rút ngẫu nhiên / giao lớp
 * Chỉ dùng token (tokens.css) → tự theo dark mode / cỡ chữ giao diện.
 * ===================================================================================================== */

/* ---------- khung trang ---------- */
.edw-role:has(> .edw-au-editor), .edw-au-editor.edw-page { max-width: 1560px; }
.edw-role:has(> .edw-au-paper), .edw-au-paper.edw-page { max-width: 1400px; }
.edw-au-head .edw-page-sub b { color: var(--text-1); }
.edu-au-sp { flex: 1 1 auto; }
.edu-au-mt { margin-top: 12px; }
.edu-au-mb0 { margin-bottom: 0 !important; }

/* tab trạng thái có số đếm */
.edu-au-tabs { display: flex; gap: 6px; margin: 0 0 14px; border-bottom: 1px solid var(--border); overflow-x: auto; scrollbar-width: none; }
.edu-au-tabs::-webkit-scrollbar { display: none; }
.edu-au-tab { position: relative; display: inline-flex; align-items: center; gap: 8px; height: 42px; padding: 0 14px; border: 0; background: transparent; color: var(--text-2); font: inherit; font-weight: 700; font-size: var(--fs-sm); cursor: pointer; white-space: nowrap; }
.edu-au-tab::after { content: ''; position: absolute; left: 10px; right: 10px; bottom: -1px; height: 3px; border-radius: 3px 3px 0 0; background: transparent; transition: background .15s var(--ease); }
.edu-au-tab:hover { color: var(--text-1); }
.edu-au-tab.is-on { color: var(--primary); }
.edu-au-tab.is-on::after { background: var(--primary); }
.edu-au-tab-n { min-width: 22px; height: 20px; padding: 0 7px; border-radius: 999px; background: var(--surface-3); color: var(--text-2); font-size: 11.5px; font-weight: 800; display: inline-flex; align-items: center; justify-content: center; }
.edu-au-tab.is-on .edu-au-tab-n { background: var(--primary-soft); color: var(--primary); }

/* thanh lọc */
.edu-au-bar { gap: 8px 10px; }
.edu-au-search { position: relative; display: inline-flex; align-items: center; flex: 1 1 260px; min-width: 220px; height: 42px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); color: var(--text-3); }
.edu-au-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft2); color: var(--primary); }
.edu-au-search > edu-icon { position: absolute; left: 12px; pointer-events: none; display: inline-flex; }
.edu-au-search input { flex: 1 1 auto; min-width: 0; height: 100%; padding: 0 12px 0 38px; border: 0; background: transparent; color: var(--text-1); font: inherit; outline: 0; }
.edu-au-sel { flex: 0 1 auto; min-width: 128px; max-width: 200px; }
.edu-au-sel select { padding-right: 30px; }
.edu-au-sel select { font-weight: 600; }
.edu-au-count { margin: -4px 2px 10px; color: var(--text-3); font-size: var(--fs-sm); font-weight: 600; }
.edu-au-more { margin-top: 14px; }

/* ---------- dòng câu hỏi ---------- */
.edu-au-list { display: flex; flex-direction: column; gap: 10px; }
.edu-au-q { display: flex; align-items: center; gap: 14px; padding: 14px 14px 14px 16px; background: var(--surface); border: 1px solid var(--border); border-radius: 16px; box-shadow: var(--sh-1); cursor: pointer; transition: border-color .15s, box-shadow .15s, transform .12s var(--ease); outline: 0; }
.edu-au-q:hover, .edu-au-q:focus-visible { border-color: var(--primary-line); box-shadow: var(--sh-2); }
.edu-au-q:active { transform: scale(.995); }
.edu-au-q-type { flex: 0 0 auto; width: 38px; height: 38px; border-radius: 12px; display: inline-flex; align-items: center; justify-content: center; font-weight: 800; font-size: 15px; background: var(--primary-soft); color: var(--primary); }
.edu-au-q-type.is-tl { background: rgba(142, 68, 173, .12); color: var(--purple); }
.edu-au-q-main { flex: 1 1 auto; min-width: 0; }
.edu-au-q-stem { color: var(--text-1); font-weight: 600; line-height: 1.45; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; word-break: break-word; }
.edu-au-q-stem.is-1 { -webkit-line-clamp: 1; }
.edu-au-q-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 6px 8px; margin-top: 6px; }
.edu-au-q-kind { font-size: var(--fs-xs); font-weight: 700; color: var(--text-2); }
.edu-au-q-sub { display: inline-flex; flex-wrap: wrap; gap: 0; font-size: var(--fs-xs); color: var(--text-3); }
.edu-au-q-sub > span + span::before { content: '·'; margin: 0 6px; }
.edu-au-q-side { flex: 0 0 auto; display: flex; flex-direction: column; align-items: flex-end; gap: 4px; min-width: 110px; text-align: right; }
.edu-au-q-diem { font-size: var(--fs-sm); font-weight: 800; color: var(--text-1); white-space: nowrap; }
.edu-au-q-ma { font-size: 11.5px; color: var(--text-3); white-space: nowrap; }
.edu-au-q-acts { flex: 0 0 auto; display: flex; gap: 2px; }

/* mức độ khó: 4 vạch */
.edu-au-lv { display: inline-flex; align-items: flex-end; gap: 2px; height: 14px; vertical-align: middle; }
.edu-au-lv i { width: 4px; border-radius: 2px; background: var(--border-strong); }
.edu-au-lv i:nth-child(1) { height: 5px; } .edu-au-lv i:nth-child(2) { height: 8px; } .edu-au-lv i:nth-child(3) { height: 11px; } .edu-au-lv i:nth-child(4) { height: 14px; }
.edu-au-lv em { font-style: normal; font-size: var(--fs-xs); font-weight: 700; color: var(--text-2); margin-left: 5px; align-self: center; }
.edu-au-lv.lv-1 i:nth-child(-n+1) { background: var(--ok); }
.edu-au-lv.lv-2 i:nth-child(-n+2) { background: var(--info); }
.edu-au-lv.lv-3 i:nth-child(-n+3) { background: var(--warn); }
.edu-au-lv.lv-4 i:nth-child(-n+4) { background: var(--danger); }

/* nút icon tròn nhỏ */
.edu-au-ibtn { position: relative; flex: 0 0 auto; width: 34px; height: 34px; border: 0; border-radius: 10px; background: transparent; color: var(--text-3); display: inline-flex; align-items: center; justify-content: center; cursor: pointer; transition: background .12s, color .12s; overflow: hidden; }
.edu-au-ibtn:hover { background: var(--surface-3); color: var(--text-1); }
.edu-au-ibtn:disabled { opacity: .35; cursor: default; background: transparent; }
.edu-au-ibtn input[type=file] { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.edu-au-ibtn.is-busy { pointer-events: none; color: var(--primary); animation: edu-au-pulse 1s infinite; }
@keyframes edu-au-pulse { 50% { opacity: .4; } }
.edu-au-link { border: 0; background: transparent; padding: 0; color: var(--primary); font: inherit; font-weight: 700; font-size: var(--fs-sm); cursor: pointer; }
.edu-au-link:hover { text-decoration: underline; }

/* ---------- thẻ đề ---------- */
.edu-au-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 14px; }
.edu-au-de { --tone: var(--primary); --tone-soft: var(--primary-soft); position: relative; display: flex; flex-direction: column; gap: 8px; padding: 16px 16px 10px; background: var(--surface); border: 1px solid var(--border); border-radius: 18px; box-shadow: var(--sh-1); cursor: pointer; overflow: hidden; transition: border-color .15s, box-shadow .15s, transform .12s var(--ease); outline: 0; }
.edu-au-de::before { content: ''; position: absolute; left: 0; top: 0; right: 0; height: 4px; background: var(--tone); opacity: .85; }
.edu-au-de:hover, .edu-au-de:focus-visible { box-shadow: var(--sh-2); border-color: var(--primary-line); transform: translateY(-1px); }
.edu-au-de.is-warn { --tone: var(--warn); --tone-soft: var(--warn-soft); }
.edu-au-de.is-info { --tone: var(--info); --tone-soft: var(--info-soft); }
.edu-au-de.is-ok { --tone: var(--ok); --tone-soft: var(--ok-soft); }
.edu-au-de-top { display: flex; align-items: center; gap: 10px; }
.edu-au-de-ico { width: 36px; height: 36px; border-radius: 11px; background: var(--tone-soft); color: var(--tone); display: inline-flex; align-items: center; justify-content: center; }
.edu-au-de-loai { font-size: var(--fs-xs); font-weight: 800; color: var(--tone); text-transform: uppercase; letter-spacing: .03em; }
.edu-au-de-name { font-weight: 800; font-size: var(--fs-md); line-height: 1.35; color: var(--text-1); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; min-height: 2.7em; }
.edu-au-de-sub { display: flex; flex-wrap: wrap; font-size: var(--fs-xs); color: var(--text-3); min-height: 1.4em; }
.edu-au-de-sub > span + span::before { content: '·'; margin: 0 6px; }
.edu-au-de-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; padding: 10px 0; border-top: 1px dashed var(--border); border-bottom: 1px dashed var(--border); }
.edu-au-de-stats > div { display: flex; flex-direction: column; align-items: center; }
.edu-au-de-stats b { font-size: var(--fs-lg); font-weight: 800; color: var(--text-1); line-height: 1.1; }
.edu-au-de-stats small { font-size: 11.5px; color: var(--text-3); font-weight: 600; }
.edu-au-de-foot { display: flex; align-items: center; gap: 4px; cursor: default; }
.edu-au-de-time { font-size: 11.5px; color: var(--text-3); }
.edu-au-de-foot .edu-btn-sm { min-height: 32px; margin: 0 2px; }

/* ---------- sheet chọn dạng / loại ---------- */
.edu-web .edu-au-typesheet { max-width: 880px; }
.edu-web .edu-au-typesheet.is-paper { max-width: 640px; }
.edu-au-types-g + .edu-au-types-g { margin-top: 16px; }
.edu-au-types-h { font-size: var(--fs-xs); font-weight: 800; text-transform: uppercase; letter-spacing: .05em; color: var(--text-3); margin: 4px 2px 8px; }
.edu-au-types-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 8px; }
.edu-au-type { display: flex; align-items: flex-start; gap: 12px; padding: 12px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); text-align: left; font: inherit; color: var(--text-1); cursor: pointer; transition: border-color .12s, background .12s, transform .1s; }
.edu-au-type:hover { border-color: var(--primary-line); background: var(--primary-soft); }
.edu-au-type:active { transform: scale(.98); }
.edu-au-type-n { flex: 0 0 auto; width: 36px; height: 36px; border-radius: 11px; display: inline-flex; align-items: center; justify-content: center; font-weight: 800; background: var(--primary-soft); color: var(--primary); }
.edu-au-type.is-purple .edu-au-type-n { background: rgba(142, 68, 173, .12); color: var(--purple); }
.edu-au-type.is-warn .edu-au-type-n { background: var(--warn-soft); color: var(--warn); }
.edu-au-type.is-info .edu-au-type-n { background: var(--info-soft); color: var(--info); }
.edu-au-type.is-ok .edu-au-type-n { background: var(--ok-soft); color: var(--ok); }
.edu-au-type-t { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.edu-au-type-t b { font-size: var(--fs-sm); }
.edu-au-type-t small { font-size: var(--fs-xs); color: var(--text-2); line-height: 1.4; }

/* ---------- màn soạn: thanh lưu dính ---------- */
.edu-au-ebar { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: 8px; margin: -6px -6px 14px; padding: 10px 12px; background: var(--bg); background: color-mix(in srgb, var(--bg) 82%, transparent); -webkit-backdrop-filter: saturate(1.6) blur(10px); backdrop-filter: saturate(1.6) blur(10px); border-bottom: 1px solid var(--border); border-radius: 0 0 16px 16px; }
.edu-au-ebar .edu-btn { margin: 0; }
.edu-au-back { width: 40px; min-height: 40px; }
.edu-au-ebar-t { display: flex; flex-direction: column; min-width: 0; }
.edu-au-ebar-t b { font-size: var(--fs-md); font-weight: 800; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.edu-au-ebar-t small { display: flex; align-items: center; gap: 8px; color: var(--text-3); font-size: var(--fs-xs); font-weight: 600; }
.edu-au-dirty { display: inline-flex; align-items: center; gap: 5px; color: var(--warn); font-weight: 700; }
.edu-au-dirty i { width: 7px; height: 7px; border-radius: 50%; background: var(--warn); }
.edu-au-saved { display: inline-flex; align-items: center; gap: 3px; color: var(--ok); font-weight: 700; }
.edu-au-note { display: flex; align-items: center; gap: 8px; margin: 0 0 12px; padding: 10px 14px; border-radius: 12px; background: var(--info-soft); color: var(--info); font-size: var(--fs-sm); }

/* ---------- màn soạn câu: 3 cột ---------- */
.edu-au-grid { display: grid; grid-template-columns: 208px minmax(0, 1fr) 300px; gap: 14px; align-items: start; }
@media (min-width: 1600px) { .edu-au-grid { grid-template-columns: 228px minmax(0, 1fr) 320px; gap: 16px; } }
.edu-au-nav, .edu-au-side { position: sticky; top: 76px; max-height: calc(100vh - 92px); overflow-y: auto; scrollbar-width: thin; }
.edu-au-nav { padding: 10px; background: var(--surface); border: 1px solid var(--border); border-radius: 18px; }
.edu-au-group { font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; color: var(--text-3); margin: 6px 6px 8px; }
.edu-au-nav > div + div .edu-au-group { margin-top: 14px; }
.edu-au-tbtn { display: flex; align-items: center; gap: 10px; width: 100%; padding: 7px 8px; border: 0; border-radius: 11px; background: transparent; color: var(--text-1); font: inherit; font-size: var(--fs-sm); font-weight: 600; text-align: left; cursor: pointer; transition: background .12s; }
.edu-au-tbtn:hover { background: var(--surface-3); }
.edu-au-tbtn-n { flex: 0 0 auto; width: 26px; height: 26px; border-radius: 8px; display: inline-flex; align-items: center; justify-content: center; background: var(--surface-3); color: var(--text-2); font-size: 12px; font-weight: 800; }
.edu-au-tbtn.is-on { background: var(--primary-soft); color: var(--primary); }
.edu-au-tbtn.is-on .edu-au-tbtn-n { background: var(--primary); color: var(--on-primary); }
.edu-au-tbtn.is-tl.is-on { background: rgba(142, 68, 173, .1); color: var(--purple); }
.edu-au-tbtn.is-tl.is-on .edu-au-tbtn-n { background: var(--purple); color: #fff; }
.edu-au-tbtn-t { line-height: 1.3; }

.edu-au-main { min-width: 0; display: flex; flex-direction: column; gap: 12px; }
.edu-au-banner { display: flex; gap: 14px; padding: 16px; border-radius: 18px; background: linear-gradient(135deg, var(--primary-soft), var(--surface)); border: 1px solid var(--primary-line); }
.edu-au-banner.is-tl { background: linear-gradient(135deg, rgba(142, 68, 173, .1), var(--surface)); border-color: rgba(142, 68, 173, .25); }
.edu-au-banner-n { flex: 0 0 auto; width: 44px; height: 44px; border-radius: 14px; display: inline-flex; align-items: center; justify-content: center; font-weight: 800; font-size: 18px; background: var(--primary); color: var(--on-primary); box-shadow: var(--sh-primary); }
.edu-au-banner.is-tl .edu-au-banner-n { background: var(--purple); color: #fff; box-shadow: none; }
.edu-au-banner-t { font-weight: 800; font-size: var(--fs-md); }
.edu-au-banner-d { color: var(--text-2); font-size: var(--fs-sm); margin-top: 2px; line-height: 1.45; }
.edu-au-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.edu-au-chip { padding: 3px 10px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); font-size: 11.5px; font-weight: 700; color: var(--text-2); }
.edu-au-chip.is-p { background: var(--primary); border-color: var(--primary); color: var(--on-primary); }
.edu-au-banner.is-tl .edu-au-chip.is-p { background: var(--purple); border-color: var(--purple); }

.edu-au-card { padding: 16px; background: var(--surface); border: 1px solid var(--border); border-radius: 18px; box-shadow: var(--sh-1); transition: border-color .15s, box-shadow .15s; }
.edu-au-card.is-err { border-color: var(--danger); box-shadow: 0 0 0 3px var(--danger-soft); }
.edu-au-card-h { display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px 10px; margin-bottom: 12px; }
.edu-au-card-h b { font-size: var(--fs); font-weight: 800; }
.edu-au-card-h > span { color: var(--text-3); font-size: var(--fs-xs); }
.edu-au-card-h .edu-au-link { margin-left: auto; font-size: var(--fs-xs); }
.edu-au-req { color: var(--danger); font-style: normal; }
.edu-au-subh { display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px 10px; margin: 16px 0 10px; padding-top: 14px; border-top: 1px dashed var(--border); }
.edu-au-subh b { font-weight: 800; font-size: var(--fs-sm); }
.edu-au-subh > span { color: var(--text-3); font-size: var(--fs-xs); }
.edu-au-lab { font-size: var(--fs-sm); font-weight: 600; color: var(--text-2); margin: 4px 0 8px; }
.edu-au-hint { margin-top: 10px; padding: 8px 12px; border-radius: 10px; background: var(--surface-3); color: var(--text-2); font-size: var(--fs-xs); }
.edu-au-hint.is-ok { background: var(--ok-soft); color: var(--ok); font-weight: 600; }
.edu-au-dash { display: flex; align-items: center; justify-content: center; gap: 8px; width: 100%; min-height: 46px; border: 1.5px dashed var(--border-strong); border-radius: 14px; background: transparent; color: var(--text-2); font: inherit; font-weight: 700; font-size: var(--fs-sm); cursor: pointer; transition: border-color .12s, color .12s, background .12s; }
.edu-au-dash:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-soft); }
.edu-au-split { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.edu-au-split.is-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.edu-au-split .edu-field { margin-bottom: 10px; min-width: 0; }

/* hàng phương án / mệnh đề / bước */
.edu-au-opt { display: flex; align-items: flex-start; gap: 10px; padding: 8px; margin-bottom: 6px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); transition: border-color .12s, background .12s, transform .15s var(--ease); }
.edu-au-opt.is-on { border-color: rgba(15, 122, 69, .45); background: var(--ok-soft); }
.edu-au-opt-body { flex: 1 1 auto; min-width: 0; display: flex; flex-direction: column; gap: 6px; }
.edu-au-in { width: 100%; min-height: 38px; padding: 8px 12px; border: 1px solid transparent; border-radius: 10px; background: var(--surface-3); color: var(--text-1); font: inherit; outline: 0; transition: border-color .12s, background .12s, box-shadow .12s; }
.edu-au-in:focus { border-color: var(--primary); background: var(--surface); box-shadow: 0 0 0 3px var(--primary-soft2); }
.edu-au-opt.is-on .edu-au-in { background: var(--surface); }
.edu-au-in-note { font-size: var(--fs-sm); min-height: 34px; }
.edu-au-in-num { max-width: 86px; text-align: right; }
.edu-au-in-sel { max-width: 220px; -webkit-appearance: auto; appearance: auto; }
.edu-au-mark { flex: 0 0 auto; width: 38px; height: 38px; border-radius: 50%; border: 2px solid var(--border-strong); background: var(--surface); color: var(--text-2); font: inherit; font-weight: 800; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; transition: all .12s; }
.edu-au-mark.is-sq { border-radius: 11px; }
.edu-au-mark:hover { border-color: var(--ok); color: var(--ok); }
.edu-au-mark.is-on { background: var(--ok); border-color: var(--ok); color: #fff; box-shadow: 0 4px 10px rgba(15, 122, 69, .25); }
.edu-au-mark.is-plain { cursor: default; border-style: dashed; }
.edu-au-mark.is-plain:hover { border-color: var(--border-strong); color: var(--text-2); }
.edu-au-ok { flex: 0 0 auto; align-self: center; display: inline-flex; align-items: center; gap: 3px; padding: 3px 9px; border-radius: 999px; background: var(--ok); color: #fff; font-size: 11.5px; font-weight: 800; }
.edu-au-thumb { position: relative; display: inline-block; align-self: flex-start; }
.edu-au-thumb img { max-width: 220px; max-height: 140px; border-radius: 10px; border: 1px solid var(--border); display: block; }
.edu-au-thumb button { position: absolute; top: -8px; right: -8px; width: 24px; height: 24px; border-radius: 50%; border: 0; background: var(--ink); color: #fff; font-size: 11px; cursor: pointer; box-shadow: var(--sh-2); }
.edu-au-add { display: inline-flex; align-items: center; gap: 6px; margin-top: 4px; padding: 8px 12px; border: 0; border-radius: 10px; background: transparent; color: var(--primary); font: inherit; font-weight: 700; font-size: var(--fs-sm); cursor: pointer; }
.edu-au-add:hover { background: var(--primary-soft); }
.edu-au-add.is-strong { background: var(--primary-soft); }
.edu-au-add.is-strong:hover { background: var(--primary); color: var(--on-primary); }
.edu-au-num { flex: 0 0 auto; width: 28px; height: 28px; margin-top: 5px; border-radius: 9px; background: var(--surface-3); color: var(--text-2); font-size: 12.5px; font-weight: 800; display: inline-flex; align-items: center; justify-content: center; }
.edu-au-tf { flex: 0 0 auto; display: inline-flex; padding: 3px; gap: 3px; border-radius: 11px; background: var(--surface-3); align-self: center; }
.edu-au-tf button { height: 32px; padding: 0 14px; border: 0; border-radius: 8px; background: transparent; color: var(--text-2); font: inherit; font-weight: 700; font-size: var(--fs-sm); cursor: pointer; }
.edu-au-tf button.is-on.is-ok { background: var(--ok); color: #fff; }
.edu-au-tf button.is-on.is-bad { background: var(--danger); color: #fff; }
.edu-au-sub { padding: 12px; margin-bottom: 10px; border: 1px solid var(--border); border-radius: 16px; background: var(--surface-2); }
.edu-au-sub-h { display: flex; align-items: center; gap: 4px; margin-bottom: 8px; }
.edu-au-sub .edu-rich { margin-bottom: 8px; }
.edu-au-pill { padding: 3px 12px; border-radius: 999px; background: var(--primary); color: var(--on-primary); font-size: 12px; font-weight: 800; }
.edu-au-pairhead { display: grid; grid-template-columns: 28px minmax(0, 1fr) 18px minmax(0, 1fr) 34px; gap: 10px; padding: 0 8px 6px; font-size: 11px; font-weight: 800; letter-spacing: .05em; color: var(--text-3); }
.edu-au-pair { display: grid; grid-template-columns: 28px minmax(0, 1fr) 18px minmax(0, 1fr) 34px; gap: 10px; align-items: start; padding: 8px; margin-bottom: 6px; border: 1px solid var(--border); border-radius: 14px; }
.edu-au-pair .edu-au-num { margin-top: 5px; }
.edu-au-pair-cell { display: flex; flex-wrap: wrap; align-items: center; gap: 4px; min-width: 0; }
.edu-au-pair-cell .edu-au-in { flex: 1 1 140px; min-width: 0; }
.edu-au-pair-arrow { color: var(--text-3); margin-top: 10px; display: inline-flex; }
.edu-au-steps.is-sorting { user-select: none; }
.edu-au-step { align-items: center; }
.edu-au-step .edu-au-num { margin-top: 0; }
.edu-au-step.is-dragging, .edu-au-item.is-dragging { position: relative; z-index: 5; box-shadow: var(--sh-3); border-color: var(--primary); background: var(--surface); transition: none; }
.edu-au-grip { flex: 0 0 auto; width: 24px; height: 34px; display: inline-flex; align-items: center; justify-content: center; color: var(--text-3); cursor: grab; touch-action: none; border-radius: 8px; }
.edu-au-grip:hover { background: var(--surface-3); color: var(--text-1); }
.edu-au-grip:active { cursor: grabbing; }
.edu-au-rub { display: flex; align-items: flex-start; gap: 8px; margin-bottom: 8px; }
.edu-au-rub .edu-au-num { margin-top: 5px; }
.edu-au-sum { display: flex; align-items: center; gap: 10px; margin: 8px 0 12px; padding: 10px 14px; border-radius: 12px; background: var(--surface-3); font-size: var(--fs-sm); color: var(--text-2); }
.edu-au-sum b { margin-left: auto; color: var(--text-1); font-size: var(--fs-md); }
.edu-au-sum em { font-style: normal; color: var(--warn); font-weight: 700; font-size: var(--fs-xs); }
.edu-au-sum.is-warn { background: var(--warn-soft); }
.edu-au-checks { display: flex; flex-direction: column; gap: 10px; justify-content: center; }
.edu-au-langs { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.edu-au-lang { display: inline-flex; align-items: center; gap: 4px; height: 32px; padding: 0 12px; border: 1px solid var(--border-strong); border-radius: 999px; background: var(--surface); color: var(--text-2); font: inherit; font-size: var(--fs-sm); font-weight: 600; cursor: pointer; transition: all .12s; }
.edu-au-lang:hover { border-color: var(--primary); color: var(--primary); }
.edu-au-lang.is-on { background: var(--primary); border-color: var(--primary); color: var(--on-primary); }
.edu-au-mono { font-family: var(--font-mono); font-size: 13px; line-height: 1.5; }
.edu-au-code { border: 1px solid var(--border-strong); border-radius: 14px; overflow: hidden; background: #0F172A; }
.edu-au-code-tabs { display: flex; gap: 2px; padding: 6px 6px 0; background: #1E293B; overflow-x: auto; }
.edu-au-code-tabs button { height: 32px; padding: 0 14px; border: 0; border-radius: 8px 8px 0 0; background: transparent; color: #94A3B8; font: inherit; font-size: 12.5px; font-weight: 700; cursor: pointer; }
.edu-au-code-tabs button.is-on { background: #0F172A; color: #E2E8F0; }
.edu-au-code textarea { display: block; width: 100%; min-height: 170px; padding: 12px 14px; border: 0; background: transparent; color: #E2E8F0; font-family: var(--font-mono); font-size: 13px; line-height: 1.6; resize: vertical; outline: 0; tab-size: 4; }
.edu-au-tests { display: flex; flex-direction: column; gap: 6px; }
.edu-au-test { display: grid; grid-template-columns: 28px minmax(0, 1fr) minmax(0, 1fr) 96px 86px 34px; gap: 8px; align-items: start; }
.edu-au-test.is-h { font-size: 11px; font-weight: 800; letter-spacing: .05em; color: var(--text-3); align-items: end; }
.edu-au-test .edu-input { min-height: 0; padding: 8px 10px; }
.edu-au-test .edu-au-num { margin-top: 6px; }
.edu-au-kind { height: 38px; display: inline-flex; align-items: center; justify-content: center; gap: 4px; border: 1px solid var(--border-strong); border-radius: 10px; background: var(--surface); font: inherit; font-size: 12.5px; font-weight: 700; cursor: pointer; }
.edu-au-kind.is-sample { color: var(--info); border-color: rgba(26, 99, 196, .35); background: var(--info-soft); }
.edu-au-kind.is-hidden { color: var(--text-2); }

/* cột phải */
.edu-au-side { display: flex; flex-direction: column; gap: 12px; }
.edu-au-scard { padding: 14px; background: var(--surface); border: 1px solid var(--border); border-radius: 18px; box-shadow: var(--sh-1); }
.edu-au-scard .edu-au-group { margin: 0 0 12px; }
.edu-au-scard .edu-field { margin-bottom: 12px; }
.edu-au-scard .edu-field > label { font-size: var(--fs-xs); margin-bottom: 5px; }
.edu-au-scard .edu-input { min-height: 40px; padding: 8px 12px; }
.edu-au-scard .edu-field.is-err .edu-input { border-color: var(--danger); }
.edu-au-pills { display: flex; flex-wrap: wrap; gap: 6px; }
.edu-au-pills button { height: 32px; padding: 0 12px; border: 1px solid var(--border-strong); border-radius: 999px; background: var(--surface); color: var(--text-2); font: inherit; font-size: 12.5px; font-weight: 700; cursor: pointer; transition: all .12s; }
.edu-au-pills button:hover { border-color: var(--text-3); color: var(--text-1); }
.edu-au-pills button.is-on.is-ok { background: var(--ok); border-color: var(--ok); color: #fff; }
.edu-au-pills button.is-on.is-info { background: var(--info); border-color: var(--info); color: #fff; }
.edu-au-pills button.is-on.is-warn { background: var(--warn); border-color: var(--warn); color: #fff; }
.edu-au-pills button.is-on.is-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.edu-au-ro { min-height: 40px; display: flex; align-items: center; padding: 6px 10px; border-radius: 10px; background: var(--surface-3); color: var(--text-2); font-size: 12.5px; font-weight: 600; line-height: 1.3; }
.edu-au-check { border-width: 1px; }
.edu-au-check.is-ok { border-color: rgba(15, 122, 69, .35); background: var(--ok-soft); }
.edu-au-check.is-warn { border-color: rgba(178, 106, 0, .35); background: var(--warn-soft); }
.edu-au-check-h { display: flex; align-items: center; gap: 8px; font-weight: 800; }
.edu-au-check.is-ok .edu-au-check-h { color: var(--ok); }
.edu-au-check.is-warn .edu-au-check-h { color: var(--warn); }
.edu-au-check-t { margin-top: 6px; font-size: var(--fs-sm); color: var(--text-1); line-height: 1.45; }
.edu-au-kbd { margin-top: 8px; font-size: 11.5px; color: var(--text-3); }

/* ---------- ô soạn TinyMCE ---------- */
.edu-rich { position: relative; border-radius: 12px; }
.edu-rich .edu-rich-ta { display: none; }
.edu-rich .tox-tinymce { border: 1px solid var(--border-strong) !important; border-radius: 12px !important; transition: border-color .12s, box-shadow .12s; }
.edu-rich.is-focus .tox-tinymce { border-color: var(--primary) !important; box-shadow: 0 0 0 3px var(--primary-soft2); }
.edu-rich .tox .tox-toolbar, .edu-rich .tox .tox-toolbar__primary, .edu-rich .tox .tox-toolbar-overlord { background: var(--surface-2) !important; }
.edu-rich .tox .tox-editor-header { border-bottom: 1px solid var(--border) !important; box-shadow: none !important; padding: 0 !important; }
.edu-rich-skel { height: 132px; border: 1px solid var(--border); border-radius: 12px; padding: 14px; background: var(--surface-2); display: flex; flex-direction: column; gap: 10px; }
.edu-rich-skel span { height: 12px; border-radius: 6px; background: var(--surface-3); animation: edu-au-pulse 1.2s infinite; }
.edu-rich-skel span:nth-child(1) { width: 40%; } .edu-rich-skel span:nth-child(2) { width: 85%; } .edu-rich-skel span:nth-child(3) { width: 65%; }
.edu-rich-plain { min-height: 120px; padding: 12px 14px; border: 1px solid var(--border-strong); border-radius: 12px; background: var(--surface); outline: 0; line-height: 1.6; }
.edu-rich-plain:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft2); }
.edu-rich-plain:empty::before { content: attr(data-ph); color: var(--text-3); }
.edu-rich-blank { position: absolute; right: 8px; bottom: 8px; z-index: 2; display: inline-flex; align-items: center; gap: 6px; height: 30px; padding: 0 10px; border: 1px solid var(--primary-line); border-radius: 9px; background: var(--surface); color: var(--primary); font: inherit; font-size: 12.5px; font-weight: 700; cursor: pointer; box-shadow: var(--sh-1); }
.edu-rich-blank:hover { background: var(--primary-soft); }
.edu-rich-blank b { letter-spacing: 1px; }
/* hộp thoại TinyMCE nổi trên sheet / thanh dính */
.tox-tinymce-aux { z-index: 9800 !important; }
/* công thức đã vẽ trong nội dung câu (HS / GV) */
.qch-math { display: inline-block; padding: 0 2px; }
.qch-math .katex { font-size: 1.05em; }

/* ---------- màn soạn đề ---------- */
.edu-au-pgrid { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 16px; align-items: start; }
.edu-au-paper .edu-au-side { position: sticky; top: 76px; max-height: calc(100vh - 92px); overflow-y: auto; }
.edu-au-pcard .edu-au-split { margin-top: 12px; }
.edu-au-pname { width: 100%; padding: 6px 2px 10px; border: 0; border-bottom: 2px solid var(--border); background: transparent; color: var(--text-1); font: inherit; font-size: var(--fs-xl); font-weight: 800; letter-spacing: -.01em; outline: 0; transition: border-color .15s; }
.edu-au-pname:focus { border-color: var(--primary); }
.edu-au-pname.is-err { border-color: var(--danger); }
.edu-au-pname::placeholder { color: var(--text-3); font-weight: 700; }
.edu-au-loais { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; margin-bottom: 14px; }
.edu-au-loai { --tone: var(--primary); --tone-soft: var(--primary-soft); display: flex; align-items: center; gap: 8px; min-height: 46px; padding: 8px 12px; border: 1.5px solid var(--border); border-radius: 13px; background: var(--surface); color: var(--text-2); font: inherit; font-size: var(--fs-sm); font-weight: 700; text-align: left; cursor: pointer; transition: all .12s; }
.edu-au-loai.is-warn { --tone: var(--warn); --tone-soft: var(--warn-soft); }
.edu-au-loai.is-info { --tone: var(--info); --tone-soft: var(--info-soft); }
.edu-au-loai.is-ok { --tone: var(--ok); --tone-soft: var(--ok-soft); }
.edu-au-loai edu-icon { color: var(--tone); display: inline-flex; }
.edu-au-loai:hover { border-color: var(--tone); }
.edu-au-loai.is-on { border-color: var(--tone); background: var(--tone-soft); color: var(--tone); box-shadow: 0 0 0 3px var(--tone-soft); }
.edu-au-setup { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0 12px; align-items: end; }
.edu-au-setup .edu-field { margin-bottom: 12px; min-width: 0; }
.edu-au-setup .is-span { grid-column: 1 / -1; }
.edu-au-setup .edu-gq-switch { margin-bottom: 8px; }
.edu-au-setup .edu-gq-switch em { font-style: normal; color: var(--text-3); font-weight: 500; }
.edu-au-mins { position: relative; }
.edu-au-mins .edu-input { padding-right: 52px; }
.edu-au-mins span { position: absolute; right: 12px; top: 50%; transform: translateY(-50%); color: var(--text-3); font-size: var(--fs-sm); pointer-events: none; }
.edu-au-sec { padding: 12px; }
.edu-au-sec-h { display: flex; align-items: center; gap: 4px; padding: 2px 2px 10px; }
.edu-au-sec-name { flex: 0 1 380px; min-width: 120px; height: 38px; padding: 0 10px; border: 1px solid transparent; border-radius: 10px; background: transparent; color: var(--text-1); font: inherit; font-weight: 800; font-size: var(--fs-md); outline: 0; }
.edu-au-sec-name:hover { background: var(--surface-3); }
.edu-au-sec-name:focus { border-color: var(--primary); background: var(--surface); }
.edu-au-sec-meta { margin-left: 6px; padding: 3px 10px; border-radius: 999px; background: var(--surface-3); color: var(--text-2); font-size: 12px; font-weight: 700; white-space: nowrap; }
.edu-au-items { display: flex; flex-direction: column; gap: 6px; }
.edu-au-item { display: flex; align-items: center; gap: 8px; padding: 8px 8px 8px 4px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); transition: border-color .12s, transform .15s var(--ease); }
.edu-au-item:hover { border-color: var(--primary-line); }
.edu-au-item .edu-au-q-type { width: 32px; height: 32px; border-radius: 10px; font-size: 13px; }
.edu-au-item-no { flex: 0 0 auto; min-width: 52px; font-size: 12.5px; font-weight: 800; color: var(--text-2); }
.edu-au-item .edu-au-q-meta { margin-top: 3px; }
.edu-au-pts { flex: 0 0 auto; display: inline-flex; align-items: center; height: 36px; border: 1px solid var(--border-strong); border-radius: 10px; background: var(--surface); overflow: hidden; }
.edu-au-pts:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft2); }
.edu-au-pts input { width: 52px; height: 100%; padding: 0 4px 0 8px; border: 0; background: transparent; color: var(--text-1); font: inherit; font-weight: 800; text-align: right; outline: 0; }
.edu-au-pts span { padding: 0 9px 0 3px; color: var(--text-3); font-size: 12px; font-weight: 700; }
.edu-au-sec-empty { padding: 18px; border: 1.5px dashed var(--border); border-radius: 14px; text-align: center; color: var(--text-3); font-size: var(--fs-sm); }
.edu-au-sec-acts { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.edu-au-ov-total { display: flex; align-items: baseline; gap: 6px; }
.edu-au-ov-total b { font-size: 34px; font-weight: 800; letter-spacing: -.02em; line-height: 1; }
.edu-au-ov-total span { color: var(--text-3); font-weight: 700; }
.edu-au-ov-total.is-ok b { color: var(--ok); } .edu-au-ov-total.is-warn b { color: var(--warn); } .edu-au-ov-total.is-bad b { color: var(--danger); }
.edu-au-ov-bar { height: 8px; margin: 10px 0 8px; border-radius: 999px; background: var(--surface-3); overflow: hidden; }
.edu-au-ov-bar i { display: block; height: 100%; border-radius: 999px; background: var(--warn); transition: width .3s var(--ease); }
.edu-au-ov-bar.is-ok i { background: var(--ok); } .edu-au-ov-bar.is-bad i { background: var(--danger); }
.edu-au-ov-msg { font-size: var(--fs-xs); color: var(--text-2); margin-bottom: 10px; }
.edu-au-ov-nums { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; padding-top: 10px; border-top: 1px dashed var(--border); }
.edu-au-ov-nums > div { display: flex; flex-direction: column; align-items: center; text-align: center; }
.edu-au-ov-nums b { font-size: var(--fs-lg); font-weight: 800; }
.edu-au-ov-nums small { font-size: 11px; color: var(--text-3); font-weight: 600; }
.edu-au-mx { display: grid; grid-template-columns: minmax(0, 1fr) auto; grid-template-areas: 'n c' 'b p'; gap: 4px 8px; align-items: center; padding: 6px 0; }
.edu-au-mx + .edu-au-mx { border-top: 1px solid var(--border); }
.edu-au-mx-n { grid-area: n; display: inline-flex; align-items: center; gap: 7px; font-size: var(--fs-sm); font-weight: 700; }
.edu-au-mx-c { grid-area: c; font-size: 11.5px; color: var(--text-3); font-weight: 600; white-space: nowrap; }
.edu-au-mx-bar { grid-area: b; height: 6px; border-radius: 999px; background: var(--surface-3); overflow: hidden; }
.edu-au-mx-bar i { display: block; height: 100%; border-radius: 999px; background: var(--primary); transition: width .3s var(--ease); }
.edu-au-mx-bar i.is-ok { background: var(--ok); } .edu-au-mx-bar i.is-info { background: var(--info); } .edu-au-mx-bar i.is-warn { background: var(--warn); } .edu-au-mx-bar i.is-danger { background: var(--danger); }
.edu-au-mx-p { grid-area: p; font-size: 12px; font-weight: 800; color: var(--text-2); min-width: 40px; text-align: right; }
.edu-au-dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; background: var(--primary); flex: 0 0 auto; }
.edu-au-dot.is-ok { background: var(--ok); } .edu-au-dot.is-info { background: var(--info); } .edu-au-dot.is-warn { background: var(--warn); } .edu-au-dot.is-danger { background: var(--danger); }
.edu-au-tip { display: flex; gap: 8px; align-items: flex-start; font-size: var(--fs-xs); color: var(--text-2); line-height: 1.5; background: var(--surface-2); box-shadow: none; }
.edu-au-tip > edu-icon { color: var(--info); margin-top: 1px; display: inline-flex; }

/* ---------- sheet: thanh nút đáy chung ---------- */
.edu-au-sheetbar { flex: 0 0 auto; display: flex; align-items: center; gap: 8px 12px; padding: 12px 20px; border-top: 1px solid var(--border); background: var(--surface); }
.edu-au-sheetbar .edu-btn { margin: 0; flex: 0 0 auto; }
.edu-au-sheetbar-t { flex: 0 1 auto; min-width: 0; font-size: var(--fs-sm); color: var(--text-2); line-height: 1.35; }
.edu-au-sheetbar-t b { color: var(--primary); font-size: var(--fs-md); }

/* sheet chọn câu */
.edu-web .edu-au-picksheet { max-width: 940px; width: 94vw; height: min(880px, 90vh); }
.edu-web .edu-au-randsheet { max-width: 1120px; width: 96vw; height: min(900px, 92vh); }
.edu-web .edu-au-assignsheet { max-width: 680px; height: min(820px, 90vh); }
.edu-au-picksheet .edu-sheet-head, .edu-au-randsheet .edu-sheet-head, .edu-au-assignsheet .edu-sheet-head { border-bottom: 1px solid var(--border); padding-bottom: 12px; }
.edu-au-picksheet .edu-sheet-body, .edu-au-randsheet .edu-sheet-body, .edu-au-assignsheet .edu-sheet-body { padding: 0; display: flex; flex-direction: column; overflow: hidden; min-height: 0; }
.edu-au-pk, .edu-au-rd, .edu-au-as { display: flex; flex-direction: column; flex: 1 1 auto; min-height: 0; }
.edu-au-pk-top { flex: 0 0 auto; padding: 12px 20px; border-bottom: 1px solid var(--border); display: flex; flex-direction: column; gap: 10px; background: var(--surface-2); }
.edu-au-pk-top .edu-au-search { flex: 0 0 auto; width: 100%; }
.edu-au-pk-filters { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.edu-au-mini { height: 36px; padding: 0 30px 0 12px; border: 1px solid var(--border-strong); border-radius: 10px; background: var(--surface); color: var(--text-1); font: inherit; font-size: var(--fs-sm); font-weight: 600; cursor: pointer; }
.edu-au-pk-list { flex: 1 1 auto; overflow-y: auto; padding: 12px 20px; display: flex; flex-direction: column; gap: 6px; }
.edu-au-pk-row { display: flex; align-items: center; gap: 10px; padding: 10px 10px 10px 12px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); cursor: pointer; transition: border-color .12s, background .12s; }
.edu-au-pk-row:hover { border-color: var(--primary-line); }
.edu-au-pk-row.is-on { border-color: var(--primary); background: var(--primary-soft); }
.edu-au-pk-row.is-in { opacity: .6; cursor: default; }
.edu-au-pk-row.is-static { cursor: default; }
.edu-au-pk-row .edu-au-num { margin-top: 0; }
.edu-au-pk-box { flex: 0 0 auto; width: 22px; height: 22px; border-radius: 7px; border: 2px solid var(--border-strong); display: inline-flex; align-items: center; justify-content: center; color: #fff; transition: all .12s; }
.edu-au-pk-row.is-on .edu-au-pk-box { background: var(--primary); border-color: var(--primary); }
.edu-au-pk-row.is-in .edu-au-pk-box { background: var(--text-3); border-color: var(--text-3); }

/* sheet rút ngẫu nhiên */
.edu-au-rd-grid { flex: 1 1 auto; min-height: 0; display: grid; grid-template-columns: 400px minmax(0, 1fr); }
.edu-au-rd-cond { overflow-y: auto; padding: 16px 20px; border-right: 1px solid var(--border); background: var(--surface-2); }
.edu-au-rd-res { overflow-y: auto; padding: 16px 20px; display: flex; flex-direction: column; gap: 6px; }
.edu-au-rd-head { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin-bottom: 6px; }
.edu-au-rd-head b { font-size: var(--fs-md); font-weight: 800; }
.edu-au-rd-head > span:not(.edu-chip) { color: var(--text-3); font-weight: 700; font-size: var(--fs-sm); }
.edu-au-quota { margin: 14px 0; padding: 12px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); }
.edu-au-quota-h { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; margin-bottom: 6px; }
.edu-au-quota-h b { font-size: var(--fs-sm); font-weight: 800; }
.edu-au-quota-h span { font-size: 11px; color: var(--text-3); }
.edu-au-quota-row { display: flex; align-items: center; gap: 8px; padding: 6px 0; }
.edu-au-quota-row + .edu-au-quota-row { border-top: 1px solid var(--border); }
.edu-au-quota-n { flex: 1 1 auto; font-size: var(--fs-sm); font-weight: 600; }
.edu-au-quota-a { font-style: normal; font-size: 11.5px; color: var(--text-3); font-weight: 600; white-space: nowrap; }
.edu-au-quota-a.is-low { color: var(--danger); }
.edu-au-quota-sum { text-align: right; padding-top: 6px; font-size: 12px; color: var(--text-2); }
.edu-au-step { display: inline-flex; align-items: center; border: 1px solid var(--border-strong); border-radius: 10px; overflow: hidden; }
.edu-au-step button { width: 30px; height: 32px; border: 0; background: var(--surface-3); color: var(--text-1); font-size: 16px; font-weight: 700; cursor: pointer; }
.edu-au-step button:disabled { opacity: .4; cursor: default; }
.edu-au-step input { width: 42px; height: 32px; border: 0; background: var(--surface); color: var(--text-1); text-align: center; font: inherit; font-weight: 800; outline: 0; -moz-appearance: textfield; }
.edu-au-step input::-webkit-outer-spin-button, .edu-au-step input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

/* sheet giao lớp */
.edu-au-as-body { flex: 1 1 auto; overflow-y: auto; padding: 14px 20px 20px; }
.edu-au-as-de { display: flex; align-items: center; gap: 12px; padding: 12px; border-radius: 14px; background: var(--primary-soft); }
.edu-au-as-de b { display: block; font-weight: 800; }
.edu-au-as-de small { color: var(--text-2); font-size: var(--fs-xs); }
.edu-au-as-ico { width: 40px; height: 40px; border-radius: 12px; background: var(--primary); color: var(--on-primary); display: inline-flex; align-items: center; justify-content: center; flex: 0 0 auto; }
.edu-au-as-step { display: flex; align-items: center; gap: 8px; margin: 18px 0 10px; font-weight: 800; font-size: var(--fs-sm); }
.edu-au-as-step > span:first-child { width: 22px; height: 22px; border-radius: 50%; background: var(--ink); color: #fff; font-size: 12px; display: inline-flex; align-items: center; justify-content: center; }
.edu-au-as-seg button { height: 30px; padding: 0 12px; font-size: 12.5px; }
/* tìm lớp + phân trang (26/10) */
.edu-au-as-find { display: flex; align-items: center; gap: 8px; width: min(320px, 55%); height: 38px; padding: 0 6px 0 12px; border: 1px solid var(--border-strong); border-radius: 11px; background: var(--surface); color: var(--text-3); font-weight: 500; }
.edu-au-as-find:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.edu-au-as-find input { flex: 1 1 auto; min-width: 0; height: 100%; border: 0; outline: 0; background: transparent; font: inherit; font-size: var(--fs-sm); color: var(--text-1); }
.edu-au-as-find input::-webkit-search-cancel-button { display: none; }
.edu-au-as-find button { width: 26px; height: 26px; border: 0; border-radius: 50%; background: var(--surface-3); color: var(--text-2); display: inline-flex; align-items: center; justify-content: center; cursor: pointer; }
.edu-au-as-picked { margin: -4px 0 8px; font-size: var(--fs-xs); color: var(--text-3); }
.edu-au-as-picked b { color: var(--primary); }
.edu-au-as-pager { display: flex; align-items: center; gap: 8px; margin-top: 10px; font-size: var(--fs-xs); color: var(--text-3); }
.edu-au-as-pager b { font-size: var(--fs-sm); color: var(--text-1); min-width: 48px; text-align: center; }
.edu-au-as-pager button { width: 32px; height: 32px; border: 1px solid var(--border); border-radius: 9px; background: var(--surface); color: var(--text-2); display: inline-flex; align-items: center; justify-content: center; cursor: pointer; }
.edu-au-as-pager button:hover:not(:disabled) { border-color: var(--primary); color: var(--primary); }
.edu-au-as-pager button:disabled { opacity: .4; cursor: default; }
.edu-au-as-lops { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 8px; }
.edu-au-as-lop { display: flex; flex-direction: column; align-items: flex-start; gap: 2px; padding: 10px 12px; border: 1.5px solid var(--border); border-radius: 13px; background: var(--surface); font: inherit; text-align: left; cursor: pointer; transition: all .12s; }
.edu-au-as-lop b { font-size: var(--fs-sm); color: var(--text-1); }
.edu-au-as-lop small { font-size: 11.5px; color: var(--text-3); }
.edu-au-as-ma { max-width: 100%; margin: 2px 0 1px; padding: 1px 7px; border-radius: 6px; background: var(--surface-3); color: var(--text-2); font-family: var(--font-mono); font-size: 11px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.edu-au-as-lop.is-on .edu-au-as-ma { background: var(--surface); color: var(--primary); }
.edu-au-as-lop:hover { border-color: var(--primary-line); }
.edu-au-as-lop.is-on { border-color: var(--primary); background: var(--primary-soft); box-shadow: 0 0 0 3px var(--primary-soft2); }
.edu-au-as-buoi { display: flex; flex-direction: column; gap: 6px; max-height: 260px; overflow-y: auto; }
.edu-au-as-b { display: flex; align-items: center; gap: 12px; padding: 8px 12px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); font: inherit; text-align: left; color: var(--text-1); cursor: pointer; transition: all .12s; }
.edu-au-as-b:hover { border-color: var(--primary-line); }
.edu-au-as-b.is-on { border-color: var(--primary); background: var(--primary-soft); color: var(--primary); }
.edu-au-as-b.is-today .edu-au-as-b-d b { color: var(--danger); }
.edu-au-as-b-d { display: flex; flex-direction: column; align-items: center; min-width: 64px; }
.edu-au-as-b-d b { font-size: var(--fs-md); font-weight: 800; }
.edu-au-as-b-d small, .edu-au-as-b-t small { font-size: 11.5px; color: var(--text-3); font-weight: 600; }
.edu-au-as-b-t { flex: 1 1 auto; display: flex; flex-direction: column; font-weight: 700; font-size: var(--fs-sm); }

/* ---------- responsive ---------- */
@media (max-width: 1280px) {
    .edu-au-grid { grid-template-columns: 200px minmax(0, 1fr) 290px; }
    .edu-au-pgrid { grid-template-columns: minmax(0, 1fr) 300px; }
    .edu-au-setup { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 1080px) {
    .edu-au-grid { grid-template-columns: minmax(0, 1fr) 280px; }
    .edu-au-nav { grid-column: 1 / -1; position: static; max-height: none; display: flex; flex-wrap: wrap; gap: 6px; }
    .edu-au-nav > div { display: contents; }
    .edu-au-nav .edu-au-group { display: none; }
    .edu-au-tbtn { width: auto; padding: 5px 10px 5px 5px; border: 1px solid var(--border); }
    .edu-au-loais { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .edu-au-rd-grid { grid-template-columns: 340px minmax(0, 1fr); }
}
@media (max-width: 860px) {
    .edu-au-grid, .edu-au-pgrid { grid-template-columns: minmax(0, 1fr); }
    .edu-au-side, .edu-au-paper .edu-au-side { position: static; max-height: none; }
    .edu-au-q { flex-wrap: wrap; }
    .edu-au-q-side { flex-direction: row; align-items: center; min-width: 0; order: 3; margin-left: 52px; }
    .edu-au-q-acts { order: 4; margin-left: auto; }
    .edu-au-ebar { flex-wrap: wrap; }
    .edu-au-ebar-t { flex: 1 1 60%; }
    .edu-au-split, .edu-au-split.is-3 { grid-template-columns: 1fr; }
    .edu-au-test { grid-template-columns: 28px 1fr 1fr; }
    .edu-au-test.is-h { display: none; }
    .edu-au-rd-grid { grid-template-columns: minmax(0, 1fr); overflow-y: auto; }
    .edu-au-rd-cond { border-right: 0; border-bottom: 1px solid var(--border); overflow: visible; }
    .edu-au-rd-res { overflow: visible; }
    .edu-au-item { flex-wrap: wrap; }
    .edu-au-item-no { min-width: 0; }
}

/* ---------- Scratch: project mẫu + kịch bản kiểm tra (26/10) ---------- */
.edu-au-mau { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }
.edu-au-mau-file { display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: 10px; background: rgba(133, 92, 214, .1); color: #6d28d9; font-weight: 700; font-size: var(--fs-sm); text-decoration: none; }
.edu-au-filebtn { position: relative; overflow: hidden; margin: 0; }
.edu-au-filebtn input[type=file] { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.edu-au-filebtn.is-busy { pointer-events: none; opacity: .7; }
.edu-au-sct { display: flex; flex-direction: column; gap: 10px; }
.edu-au-sct-run { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.edu-au-sct-run .edu-btn { margin: 0; }
.edu-au-sct-hint { font-size: var(--fs-xs); color: var(--text-3); }
.edu-au-sct-err { font-size: var(--fs-xs); color: var(--danger); font-weight: 700; }
.edu-au-sct-card { padding: 10px; border: 1px solid var(--border); border-left: 4px solid var(--border-strong); border-radius: 14px; background: var(--surface-2); }
.edu-au-sct-card.is-ok { border-left-color: var(--ok); } .edu-au-sct-card.is-bad { border-left-color: var(--danger); }
.edu-au-sct-h { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.edu-au-sct-h .edu-au-num { margin-top: 0; }
.edu-au-sct-name { flex: 1 1 auto; font-weight: 700; background: var(--surface); }
.edu-au-sct-h .edu-au-kind { width: 92px; flex: 0 0 auto; }
.edu-au-sct-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr); gap: 12px; }
.edu-au-sct-col { min-width: 0; display: flex; flex-direction: column; gap: 6px; }
.edu-au-sct-lab { font-size: 11.5px; font-weight: 800; text-transform: uppercase; letter-spacing: .04em; color: var(--text-3); margin-top: 2px; }
.edu-au-sct-lab span { text-transform: none; letter-spacing: 0; font-weight: 600; }
.edu-au-sct-step, .edu-au-sct-chk { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; padding: 6px; border-radius: 10px; background: var(--surface); border: 1px solid var(--border); }
.edu-au-sct-chk.is-ok { border-color: rgba(15, 122, 69, .4); background: var(--ok-soft); } .edu-au-sct-chk.is-bad { border-color: rgba(200, 30, 30, .35); background: var(--danger-soft); }
.edu-au-sct-n { width: 22px; height: 22px; border-radius: 7px; background: var(--surface-3); color: var(--text-2); font-size: 11.5px; font-weight: 800; display: inline-flex; align-items: center; justify-content: center; flex: 0 0 auto; }
.edu-au-sct-sel { flex: 0 1 190px; min-width: 140px; min-height: 34px; padding: 6px 8px; -webkit-appearance: auto; appearance: auto; }
.edu-au-sct-step .edu-au-in, .edu-au-sct-chk .edu-au-in { min-height: 34px; padding: 6px 8px; background: var(--surface-2); }
.edu-au-in-xs { width: 70px; flex: 0 0 auto; }
.edu-au-in-sm { width: 140px; flex: 0 1 140px; min-width: 90px; }
.edu-au-in-op { width: 64px; flex: 0 0 auto; -webkit-appearance: auto; appearance: auto; }
.edu-au-sct-step .edu-au-in:not(.edu-au-in-xs):not(.edu-au-in-sm):not(.edu-au-sct-sel), .edu-au-sct-chk .edu-au-in:not(.edu-au-in-xs):not(.edu-au-in-sm):not(.edu-au-in-op):not(.edu-au-sct-sel) { flex: 1 1 120px; min-width: 100px; }
.edu-au-sct-step .edu-au-ibtn, .edu-au-sct-chk .edu-au-ibtn { margin-left: auto; width: 28px; height: 28px; }
.edu-au-sct-row { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 6px; }
.edu-au-sct-after { display: inline-flex; align-items: center; gap: 6px; font-size: var(--fs-xs); color: var(--text-2); }
.edu-au-sct-got { display: inline-flex; align-items: center; gap: 3px; font-size: 12px; font-weight: 700; color: var(--text-2); }
.edu-au-sct-chk.is-ok .edu-au-sct-got { color: var(--ok); } .edu-au-sct-chk.is-bad .edu-au-sct-got { color: var(--danger); }
.edu-au-sct-exp { width: 100%; resize: vertical; background: var(--surface); }
.edu-au-sct-res { display: flex; gap: 10px; align-items: flex-start; margin-top: 10px; padding-top: 10px; border-top: 1px dashed var(--border); }
.edu-au-sct-res img { width: 160px; border-radius: 8px; border: 1px solid var(--border); flex: 0 0 auto; }
.edu-au-sct-res-t { display: flex; flex-direction: column; gap: 3px; font-size: var(--fs-sm); color: var(--text-2); }
.edu-au-sct-res-t b.is-ok { color: var(--ok); } .edu-au-sct-res-t b.is-bad { color: var(--danger); }
@media (max-width: 1280px) { .edu-au-sct-grid { grid-template-columns: minmax(0, 1fr); } }