/* ============================================================
   WebEdu — PHÒNG THI: .edu-q-* (12 loại câu, dùng chung exam/practice/review/grade) · .edu-exam-* (danh sách, phòng chờ, phòng thi, đã nộp)
   · .edu-lobby-* · .edu-review-* — dùng chung 2 vỏ; tablet ≥ 768px app: 2 cột
   ============================================================ */

/* ====================== câu hỏi (edu-question) ====================== */
.edu-q { position: relative; }
.edu-q-head { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.edu-q-no { font-weight: 800; font-size: var(--fs-md); color: var(--primary); }
.edu-q-type { font-size: var(--fs-xs); font-weight: 700; color: var(--text-3); text-transform: uppercase; letter-spacing: .03em; }
.edu-q-diem { font-size: var(--fs-xs); font-weight: 700; color: var(--text-2); background: var(--surface-3); border-radius: 999px; padding: 2px 8px; }
.edu-q-mark { margin-left: auto; }
.edu-q-body { line-height: 1.55; }
.edu-q-html img { max-width: 100%; height: auto; border-radius: var(--r-sm); cursor: zoom-in; }
.edu-q-html p { margin: 0 0 8px; }
.edu-q-html p:last-child { margin-bottom: 0; }
.edu-q-html table { border-collapse: collapse; max-width: 100%; margin: 6px 0; }
.edu-q-html td, .edu-q-html th { border: 1px solid var(--border); padding: 4px 8px; }
.edu-q-stem { font-size: var(--fs-md); font-weight: 600; color: var(--text-1); margin-bottom: 12px; }
.edu-q-media { padding: 10px 12px; border-radius: var(--r-sm); background: var(--surface-2); border: 1px solid var(--border); margin-bottom: 12px; font-size: var(--fs); }
.edu-q-sequence { font-family: var(--font-mono); font-size: var(--fs-lg); letter-spacing: .1em; padding: 8px 12px; background: var(--surface-3); border-radius: var(--r-sm); display: inline-block; margin-bottom: 8px; }
.edu-q-hint { font-size: var(--fs-xs); color: var(--text-3); margin: -6px 0 10px; }
.edu-q-sub-no { font-weight: 800; color: var(--primary); margin-right: 4px; }
.edu-q-explain, .edu-q-note, .edu-q-rubric, .edu-q-keyorder, .edu-q-checklist { margin-top: 14px; padding: 12px 14px; border-radius: var(--r); background: var(--info-soft); border: 1px solid rgba(26, 99, 196, .2); }
.edu-q-note { background: var(--warn-soft); border-color: rgba(178, 106, 0, .25); }
.edu-q-rubric { background: var(--surface-2); border-color: var(--border); }
.edu-q-explain-title { font-size: var(--fs-xs); font-weight: 800; text-transform: uppercase; letter-spacing: .04em; color: var(--text-2); margin-bottom: 6px; }
.edu-q-rubric-row { display: flex; justify-content: space-between; gap: 10px; padding: 4px 0; border-bottom: 1px dashed var(--border); font-size: var(--fs-sm); }
.edu-q-rubric-row:last-child { border-bottom: 0; }
.edu-q-rubric-text { flex: 1 1 auto; min-width: 0; }
.edu-q-rubric-diem { font-weight: 700; color: var(--primary); white-space: nowrap; }
.edu-q-keyorder ol { margin: 0; padding-left: 20px; }
.edu-q.is-correct .edu-q-head { }
.edu-q.is-wrong .edu-q-stem { }
/* chống copy vùng đề */
.edu-nocopy .edu-q-stem, .edu-nocopy .edu-q-media, .edu-nocopy .edu-q-options, .edu-nocopy .edu-q-ngulieu, .edu-nocopy .edu-q-ds, .edu-nocopy .edu-q-order, .edu-nocopy .edu-q-pairs-w, .edu-nocopy .edu-q-pairs-m, .edu-nocopy .edu-q-tests, .edu-nocopy .edu-q-code-spec { -webkit-user-select: none; user-select: none; }
.edu-nocopy .edu-q-html img { pointer-events: none; }

/* phương án (1/2/4/7/8/9) */
.edu-q-options { display: flex; flex-direction: column; gap: 8px; }
.edu-q-opt { display: flex; align-items: flex-start; gap: 12px; width: 100%; text-align: left; padding: 11px 12px; border-radius: var(--r); border: 1.5px solid var(--border-strong); background: var(--surface); color: var(--text-1); cursor: pointer; transition: all .15s var(--ease); font: inherit; line-height: 1.45; }
.edu-q-opt:hover:not(.is-static) { border-color: var(--primary-line); background: var(--surface-2); }
.edu-q-opt:active:not(.is-static) { transform: scale(.995); }
.edu-q-opt.is-on { border-color: var(--primary); background: var(--primary-soft); box-shadow: 0 0 0 3px var(--primary-soft2); }
.edu-q-opt.is-on .edu-q-opt-letter { background: var(--primary); color: #fff; border-color: var(--primary); }
.edu-q-opt.is-key { border-color: var(--ok); background: var(--ok-soft); }
.edu-q-opt.is-key .edu-q-opt-letter { background: var(--ok); color: #fff; border-color: var(--ok); }
.edu-q-opt.is-wrong { border-color: var(--danger); background: var(--danger-soft); }
.edu-q-opt.is-wrong .edu-q-opt-letter { background: var(--danger); color: #fff; border-color: var(--danger); }
.edu-q-opt.is-static { cursor: default; }
.edu-q-opt-letter { flex: 0 0 30px; width: 30px; height: 30px; border-radius: 50%; border: 1.5px solid var(--border-strong); display: inline-flex; align-items: center; justify-content: center; font-weight: 800; font-size: var(--fs-sm); color: var(--text-2); background: var(--surface-2); margin-top: -2px; }
.edu-q-opt-body { flex: 1 1 auto; min-width: 0; }
.edu-q-opt-img { display: block; max-width: 260px; max-height: 200px; border-radius: var(--r-sm); margin-top: 6px; }
.edu-q-opt-ico { flex: 0 0 auto; color: var(--ok); margin-top: 4px; }
.edu-q-opt.is-wrong .edu-q-opt-ico { color: var(--danger); }
.edu-q-opt-check, .edu-q-opt-box { flex: 0 0 auto; }
.edu-q-options-sm .edu-q-opt { padding: 8px 10px; }
.edu-q-options-sm .edu-q-opt-letter { width: 26px; height: 26px; flex-basis: 26px; font-size: 12px; }
.edu-q-blank { padding: 0 6px; border-bottom: 2px solid var(--primary); background: transparent; color: var(--text-3); font-weight: 600; }
.edu-q-blank.is-filled { color: var(--primary); background: var(--primary-soft); border-radius: 4px; }
@media (min-width: 768px) {
  .edu-q-options.is-grid, .edu-exam-web .edu-q-options:not(.edu-q-options-sm) { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
  .edu-exam-web .edu-q-options.has-image, .edu-exam-web .edu-q-options.is-long { grid-template-columns: 1fr; }
}

/* loại 2 ngữ liệu */
.edu-q-split { display: grid; grid-template-columns: 1fr; gap: 14px; }
.edu-exam-web .edu-q-split, .edu-web .edu-q-split { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
.edu-q-ngulieu { border-radius: var(--r); border: 1px solid var(--border); background: var(--surface-2); padding: 12px 14px; align-self: start; }
.edu-exam-web .edu-q-ngulieu { position: sticky; top: 72px; max-height: calc(100vh - 160px); overflow-y: auto; }
.edu-q-ngulieu-toggle { width: 100%; border: 0; background: transparent; color: var(--primary); font-weight: 700; font-size: var(--fs-sm); display: flex; align-items: center; gap: 6px; padding: 0; cursor: pointer; }
.edu-q-ngulieu.is-open .edu-q-ngulieu-toggle { margin-bottom: 8px; }
.edu-q-ngulieu-body { font-size: var(--fs); line-height: 1.6; }
.edu-q-subs { display: flex; flex-direction: column; gap: 14px; }
.edu-q-sub { padding: 10px 12px; border-radius: var(--r); border: 1px solid var(--border); }
.edu-q-sub.is-ok { border-color: var(--ok); } .edu-q-sub.is-bad { border-color: var(--danger); }
.edu-q-sub-stem { font-weight: 600; margin-bottom: 8px; }

/* loại 3 đúng / sai */
.edu-q-ds { display: flex; flex-direction: column; gap: 8px; }
.edu-q-ds-row { display: flex; align-items: center; gap: 12px; padding: 10px 12px; border-radius: var(--r); border: 1px solid var(--border); background: var(--surface); }
.edu-q-ds-row.is-ok { border-color: var(--ok); background: var(--ok-soft); } .edu-q-ds-row.is-bad { border-color: var(--danger); background: var(--danger-soft); }
.edu-q-ds-text { flex: 1 1 auto; min-width: 0; }
.edu-q-ds-btns { display: flex; gap: 6px; flex: 0 0 auto; }
.edu-q-ds-btn { min-width: 58px; min-height: 36px; border-radius: 999px; border: 1.5px solid var(--border-strong); background: var(--surface); font: inherit; font-weight: 700; font-size: var(--fs-sm); color: var(--text-2); cursor: pointer; transition: all .15s; }
.edu-q-ds-btn.is-on { background: var(--primary); color: #fff; border-color: var(--primary); }
.edu-q-ds-btn.is-key { box-shadow: 0 0 0 2px var(--ok); }
.edu-q-ds-btn.is-static { cursor: default; }
@media (max-width: 420px) { .edu-q-ds-row { flex-wrap: wrap; } .edu-q-ds-btns { width: 100%; justify-content: flex-end; } }

/* loại 5 ghép cặp */
.edu-q-pairs-m { display: flex; flex-direction: column; gap: 10px; }
.edu-q-pair-row { padding: 10px 12px; border-radius: var(--r); border: 1px solid var(--border); }
.edu-q-pair-row.is-ok { border-color: var(--ok); } .edu-q-pair-row.is-bad { border-color: var(--danger); }
.edu-q-pair-left { font-weight: 600; margin-bottom: 6px; }
.edu-q-pair-select { font-size: 16px; }
.edu-q-pair-static { font-size: var(--fs-sm); color: var(--text-2); }
.edu-q-pair-key { color: var(--ok); font-weight: 600; }
.edu-q-pairs-w { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.edu-q-pair-col { display: flex; flex-direction: column; gap: 8px; }
.edu-q-pair-cell { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; text-align: left; padding: 10px 12px; border-radius: var(--r); border: 1.5px solid var(--border-strong); background: var(--surface); font: inherit; color: var(--text-1); cursor: pointer; transition: all .15s; position: relative; }
.edu-q-pair-cell .edu-q-sub-no { width: 26px; height: 26px; border-radius: 50%; background: var(--surface-3); display: inline-flex; align-items: center; justify-content: center; font-size: var(--fs-sm); margin: 0; flex: 0 0 auto; }
.edu-q-pair-cell:hover:not(.is-static) { border-color: var(--primary-line); }
.edu-q-pair-cell.is-picked { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft2); }
.edu-q-pair-cell.is-linked { background: var(--primary-soft); border-color: var(--primary-line); }
.edu-q-pair-cell.is-ok { border-color: var(--ok); background: var(--ok-soft); } .edu-q-pair-cell.is-bad { border-color: var(--danger); background: var(--danger-soft); }
.edu-q-pair-cell.is-static { cursor: default; }
.edu-q-pair-tag { margin-left: auto; font-size: var(--fs-xs); font-weight: 800; color: var(--primary); background: var(--surface); border-radius: 999px; padding: 2px 8px; border: 1px solid var(--primary-line); }
.edu-q-pair-cell .edu-q-pair-key { width: 100%; font-size: var(--fs-xs); }

/* loại 6 sắp xếp */
.edu-q-order { display: flex; flex-direction: column; gap: 8px; }
.edu-q-order-row { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: var(--r); border: 1.5px solid var(--border-strong); background: var(--surface); transition: all .15s; }
.edu-q-order-row[draggable="true"] { cursor: grab; }
.edu-q-order-row.is-over { border-style: dashed; border-color: var(--primary); background: var(--primary-soft); }
.edu-q-order-row.is-ok { border-color: var(--ok); background: var(--ok-soft); } .edu-q-order-row.is-bad { border-color: var(--danger); background: var(--danger-soft); }
.edu-q-order-no { flex: 0 0 28px; width: 28px; height: 28px; border-radius: 50%; background: var(--primary); color: #fff; display: inline-flex; align-items: center; justify-content: center; font-weight: 800; font-size: var(--fs-sm); }
.edu-q-order-text { flex: 1 1 auto; min-width: 0; }
.edu-q-order-btns { display: flex; gap: 4px; flex: 0 0 auto; }
.edu-q-order-btns .edu-btn { margin: 0; width: 34px; }

/* loại 10 tự luận */
.edu-q-essay { }
.edu-q-textarea { min-height: 180px; line-height: 1.6; font-size: var(--fs); }
.edu-q-essay-foot { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: 8px; flex-wrap: wrap; }
.edu-q-wc { font-size: var(--fs-xs); color: var(--text-3); }
.edu-q-essay-view { padding: 12px 14px; border-radius: var(--r); background: var(--surface-2); border: 1px solid var(--border); min-height: 48px; line-height: 1.6; }
.edu-q-files { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.edu-q-file { position: relative; display: inline-flex; align-items: center; gap: 6px; max-width: 100%; }
.edu-q-file img { width: 96px; height: 96px; object-fit: cover; border-radius: var(--r-sm); border: 1px solid var(--border); cursor: zoom-in; }
.edu-q-file a { display: inline-flex; align-items: center; gap: 6px; padding: 8px 12px; border-radius: 999px; background: var(--surface-3); color: var(--text-1); font-size: var(--fs-sm); font-weight: 600; max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.edu-q-file-x { position: absolute; top: -6px; right: -6px; width: 22px; height: 22px; border-radius: 50%; border: 0; background: var(--ink); color: #fff; font-size: 11px; cursor: pointer; line-height: 22px; padding: 0; }

/* loại 11 lập trình */
.edu-q-code-spec { padding: 10px 12px; border-radius: var(--r-sm); background: var(--surface-2); border: 1px solid var(--border); font-size: var(--fs-sm); display: flex; flex-direction: column; gap: 4px; margin-bottom: 10px; }
.edu-q-code-limit { color: var(--text-3); font-size: var(--fs-xs); }
.edu-q-tests { display: flex; flex-direction: column; gap: 8px; margin-bottom: 12px; }
.edu-q-test { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.edu-q-test-col pre { margin: 0; padding: 8px 10px; border-radius: var(--r-sm); background: var(--ink); color: #E6EDF7; font-family: var(--font-mono); font-size: 12.5px; white-space: pre-wrap; word-break: break-word; min-height: 36px; }
.edu-q-test-lab { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--text-3); margin-bottom: 3px; }
.edu-q-code { border-radius: var(--r); border: 1px solid var(--border-strong); overflow: hidden; background: #0F1626; }
.edu-q-code-bar { display: flex; align-items: center; gap: 8px; padding: 6px 8px; background: #16203A; border-bottom: 1px solid rgba(255, 255, 255, .08); }
.edu-q-lang { width: auto; min-height: 34px; padding: 4px 30px 4px 10px; font-size: var(--fs-sm); background-color: #0F1626; color: #E6EDF7; border-color: rgba(255, 255, 255, .15); }
.edu-q-code-spacer { flex: 1; }
.edu-q-code-bar .edu-btn-soft { background: rgba(255, 255, 255, .12); color: #fff; }
.edu-q-editor { display: block; width: 100%; min-height: 260px; padding: 12px 14px; border: 0; outline: 0; resize: vertical; background: #0F1626; color: #E6EDF7; font-family: var(--font-mono); font-size: 13.5px; line-height: 1.55; tab-size: 2; -moz-tab-size: 2; white-space: pre; overflow: auto; }
.edu-q-editor::placeholder { color: rgba(230, 237, 247, .4); }
.edu-q-editor[readonly] { opacity: .85; }
.edu-q-run { margin-top: 10px; padding: 12px 14px; border-radius: var(--r); background: var(--ok-soft); border: 1px solid rgba(15, 122, 69, .25); font-size: var(--fs-sm); }
.edu-q-run.is-err { background: var(--danger-soft); border-color: rgba(200, 30, 30, .25); }
.edu-q-run-title { font-weight: 800; margin-bottom: 6px; }
.edu-q-run-err { color: var(--danger); font-family: var(--font-mono); white-space: pre-wrap; margin: 4px 0; font-size: 12.5px; }
.edu-q-run-tests { display: flex; flex-direction: column; gap: 4px; margin: 6px 0; }
.edu-q-run-test { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.edu-q-run-test.is-ok { color: var(--ok); } .edu-q-run-test.is-bad { color: var(--danger); }
.edu-q-run-test code { background: rgba(0, 0, 0, .08); padding: 1px 6px; border-radius: 4px; font-size: 12px; }
.edu-q-run-fb { margin-top: 6px; color: var(--text-1); line-height: 1.5; }
.edu-q-run-sug { margin: 6px 0 0; padding-left: 18px; color: var(--text-2); }

/* loại 12 Scratch */
.edu-q-scratch-sample { padding: 10px 12px; border-radius: var(--r-sm); background: var(--warn-soft); border: 1px solid rgba(178, 106, 0, .25); margin-bottom: 12px; font-size: var(--fs-sm); display: flex; flex-direction: column; gap: 8px; align-items: flex-start; }
.edu-q-scratch .edu-field { margin-bottom: 8px; }
.edu-q-scratch-or { text-align: center; color: var(--text-3); font-size: var(--fs-xs); font-weight: 700; text-transform: uppercase; margin: 6px 0; }
.edu-q-check-row { display: flex; align-items: center; gap: 8px; padding: 4px 0; font-size: var(--fs-sm); }
.edu-q-check-row.is-ok { color: var(--ok); } .edu-q-check-row.is-bad { color: var(--danger); }

/* ====================== danh sách bài (P1) ====================== */
.edu-exam-tabs { margin-bottom: 0; }
.edu-exam-tabs .edu-seg-item { min-height: 42px; }
.edw-toolbar .edu-exam-tabs { flex: 1 1 420px; max-width: 560px; }
.edu-exam-mons { margin: 10px 0 2px; }
.edu-exam-mons .edu-chip { border: 0; cursor: pointer; }
.edu-exam-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 14px; }
.edu-exam-card { padding: 14px 16px; cursor: pointer; transition: transform .12s var(--ease), box-shadow .15s; position: relative; overflow: hidden; margin-top: 12px; }
.edu-exam-grid .edu-exam-card { margin-top: 0; }
.edu-exam-card:hover { box-shadow: var(--sh-2); }
.edu-exam-card:active { transform: scale(.995); }
.edu-exam-card::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 5px; background: var(--border-strong); }
.edu-exam-card.is-open::before, .edu-exam-card.is-resume::before { background: var(--primary); }
.edu-exam-card.is-resume { border-color: var(--primary-line); background: linear-gradient(180deg, var(--primary-soft), var(--surface) 60%); }
.edu-exam-card.is-locked::before { background: var(--danger); }
.edu-exam-card.is-upcoming::before { background: var(--info); }
.edu-exam-card.is-done::before { background: var(--ok); }
.edu-exam-card.is-missed, .edu-exam-card.is-closed, .edu-exam-card.is-expired { opacity: .75; }
.edu-exam-card.tab-practice::before { background: var(--accent-orange); }
.edu-exam-card-top { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 8px; }
.edu-exam-card-mon, .edu-exam-card-ca { font-size: var(--fs-xs); font-weight: 700; color: var(--text-3); }
.edu-exam-card-time { margin-left: auto; display: inline-flex; align-items: center; gap: 4px; font-size: var(--fs-xs); font-weight: 700; color: var(--text-2); }
.edu-exam-card-time.is-warn { color: var(--warn); } .edu-exam-card-time.is-danger { color: var(--danger); }
.edu-exam-card.is-danger .edu-exam-card-time { animation: eduPulse 1.2s ease-in-out infinite; }
@keyframes eduPulse { 0%, 100% { opacity: 1; } 50% { opacity: .55; } }
.edu-exam-card-title { font-weight: 800; font-size: var(--fs-md); line-height: 1.3; }
.edu-exam-card-meta { display: flex; flex-wrap: wrap; gap: 4px 12px; margin-top: 6px; font-size: var(--fs-sm); color: var(--text-3); }
/* chip thông tin thẻ bài — mỗi loại 1 màu nhạt, có biểu tượng */
.edu-exam-card-meta:has(.edu-xchip) { gap: 6px; margin-top: 10px; }
.edu-xchip { display: inline-flex; align-items: center; gap: 5px; max-width: 100%; padding: 4px 10px; border-radius: 999px; background: var(--surface-3); color: var(--text-2); font-size: var(--fs-xs); font-weight: 600; line-height: 1.3; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; border: 1px solid transparent; }
.edu-xchip edu-icon { flex: 0 0 auto; opacity: .85; }
.edu-xchip.is-lop { background: var(--primary-soft); color: var(--primary); }
.edu-xchip.is-buoi { background: var(--info-soft); color: var(--info); }
.edu-xchip.is-loai { background: rgba(142, 68, 173, .1); color: var(--purple); }
.edu-xchip.is-time { background: var(--warn-soft); color: var(--warn); }
.edu-xchip.is-luot { background: var(--ok-soft); color: var(--ok); }
.edu-xchip.is-luot.is-full { background: var(--surface-3); color: var(--text-3); }
.edu-xchip.is-diem { background: rgba(230, 126, 34, .12); color: var(--accent-orange); }
[data-dark] .edu-xchip.is-loai { background: rgba(142, 68, 173, .25); } [data-dark] .edu-xchip.is-diem { background: rgba(230, 126, 34, .22); }
.edu-exam-card-foot { display: flex; align-items: center; gap: 10px; margin-top: 12px; }
.edu-exam-card-score { display: inline-flex; align-items: baseline; gap: 3px; font-size: var(--fs-sm); color: var(--text-3); }
.edu-exam-card-score .edu-score { font-size: var(--fs-lg); }
.edu-exam-card-spacer { flex: 1; }
.edu-exam-card-foot .edu-btn { margin: 0; }
[data-ui="1"] .edu-exam-card-title { font-size: var(--fs-lg); }

/* ====================== phòng chờ (P2) ====================== */
.edu-lobby-page .edw-page-head .edu-flex { align-items: center; }
.edu-lobby-cols { max-width: 860px; }
.edu-lobby-hero { margin-bottom: 14px; }
.edu-lobby-hero.is-practice { background: linear-gradient(135deg, var(--accent-orange), #B35A0E); }
.edu-lobby-hero-top { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 8px; position: relative; z-index: 1; }
.edu-lobby-hero .edu-h1 { font-size: var(--fs-xl); position: relative; z-index: 1; }
.edu-lobby-hero-sub { opacity: .85; font-size: var(--fs-sm); position: relative; z-index: 1; }
.edu-lobby-kpis { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; position: relative; z-index: 1; }
.edu-lobby-kpi { flex: 1 1 70px; min-width: 70px; background: rgba(255, 255, 255, .14); border-radius: var(--r); padding: 8px 10px; text-align: center; }
.edu-lobby-kpi b { display: block; font-size: var(--fs-lg); font-weight: 800; line-height: 1.1; }
.edu-lobby-kpi span { font-size: 11px; opacity: .85; }
.edu-lobby-contest { display: flex; flex-direction: column; gap: 6px; }
.edu-lobby-contest-row { display: flex; justify-content: space-between; gap: 12px; font-size: var(--fs-sm); }
.edu-lobby-contest-row span { color: var(--text-3); }
.edu-lobby-window { margin-top: 12px; border-left: 4px solid var(--info); }
.edu-lobby-window.is-open { border-left-color: var(--ok); } .edu-lobby-window.is-closed { border-left-color: var(--text-3); }
.edu-lobby-window-row { display: flex; align-items: center; gap: 12px; }
.edu-lobby-window-row > edu-icon { color: var(--primary); flex: 0 0 auto; }
.edu-lobby-window.is-open .edu-lobby-window-row > edu-icon { color: var(--ok); }
.edu-lobby-count { font-variant-numeric: tabular-nums; color: var(--primary); }
.edu-lobby-last { display: flex; align-items: center; gap: 12px; margin-top: 12px; }
.edu-lobby-last-main { flex: 1 1 auto; min-width: 0; font-size: var(--fs-sm); }
.edu-lobby-last code { font-family: var(--font-mono); background: var(--surface-3); padding: 1px 6px; border-radius: 4px; }
.edu-lobby-loidan { line-height: 1.6; }
.edu-lobby-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.edu-lobby-rules { margin: 0; padding-left: 20px; line-height: 1.6; font-size: var(--fs-sm); color: var(--text-1); }
.edu-lobby-rules li { margin-bottom: 4px; }
.edu-lobby-agree { margin-top: 12px; padding: 10px 12px; border-radius: var(--r); background: var(--surface-3); width: 100%; font-weight: 600; }
.edu-lobby-agree.is-on { background: var(--primary-soft); color: var(--primary); }
.edu-lobby-check .edu-row-sub { white-space: normal; }
.edu-lobby-check .edu-row-ico.is-ok { background: var(--ok-soft); color: var(--ok); } .edu-lobby-check .edu-row-ico.is-warn { background: var(--warn-soft); color: var(--warn); } .edu-lobby-check .edu-row-ico.is-danger { background: var(--danger-soft); color: var(--danger); }
.edu-lobby-reason { display: flex; align-items: center; gap: 8px; margin-top: 14px; padding: 10px 12px; border-radius: var(--r); background: var(--warn-soft); color: var(--warn); font-size: var(--fs-sm); font-weight: 600; }
.edu-lobby-foot { margin: 20px 0; max-width: 860px; }
.edu-web .edu-lobby-foot .edu-btn { max-width: 420px; margin: 0 auto; }

/* ====================== phòng thi (P3) ====================== */
.edu-exam-root { min-height: 100vh; }
.edu-exam { --exam-top: 60px; background: var(--bg); color: var(--text-1); }
.edu-exam-web { min-height: 100vh; display: flex; flex-direction: column; }
.edu-exam-top { height: var(--exam-top); display: flex; align-items: center; gap: 12px; padding: 0 16px; background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 30; }
.edu-exam-app .edu-exam-top { height: calc(var(--exam-top) + var(--sat)); padding-top: var(--sat); justify-content: flex-start; }
.edu-exam-top-btn { width: 40px; height: 40px; border-radius: 50%; border: 0; background: var(--surface-3); color: var(--text-1); display: inline-flex; align-items: center; justify-content: center; flex: 0 0 auto; cursor: pointer; }
.edu-exam-top-btn:disabled { opacity: .45; }
.edu-exam-top-submit { background: var(--primary); color: #fff; }
.edu-exam-top-title { flex: 1 1 auto; min-width: 0; text-align: left; }
.edu-exam-top-name { font-weight: 800; font-size: var(--fs); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; line-height: 1.2; }
.edu-exam-top-sub { font-size: var(--fs-xs); color: var(--text-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.edu-exam-clock { display: inline-flex; align-items: center; gap: 6px; font-variant-numeric: tabular-nums; font-weight: 800; font-size: var(--fs-lg); padding: 6px 12px; border-radius: 999px; background: var(--primary-soft); color: var(--primary); flex: 0 0 auto; letter-spacing: .02em; }
.edu-exam-clock.is-warn { background: var(--warn-soft); color: var(--warn); }
.edu-exam-clock.is-danger { background: var(--danger-soft); color: var(--danger); }
.edu-exam-clock.is-blink { animation: eduPulse .8s ease-in-out infinite; }
.edu-exam-app .edu-exam-clock { font-size: var(--fs); padding: 4px 10px; }
.edu-exam-save { display: inline-flex; align-items: center; gap: 5px; font-size: var(--fs-xs); font-weight: 600; color: var(--text-3); white-space: nowrap; }
.edu-exam-save.is-saving { color: var(--info); }
.edu-exam-save.is-saved { color: var(--ok); }
.edu-exam-save.is-offline, .edu-exam-save.is-error { color: var(--warn); }
.edu-exam-app .edu-exam-save { font-size: 11px; margin-top: 1px; }
.edu-exam-app .edu-exam-save span { overflow: hidden; text-overflow: ellipsis; }
.edu-exam-viol { flex: 0 0 auto; }
.edu-exam-submit-btn { margin: 0; flex: 0 0 auto; }
.edu-exam-center { max-width: 640px; margin: 0 auto; padding: 32px 16px; width: 100%; }
.edu-exam-body { display: flex; flex: 1 1 auto; align-items: stretch; min-height: 0; }
.edu-exam-main { flex: 1 1 auto; min-width: 0; padding: 20px 24px 40px; max-width: 920px; margin: 0 auto; width: 100%; }
.edu-exam-side { flex: 0 0 300px; border-left: 1px solid var(--border); background: var(--surface); padding: 16px; position: sticky; top: var(--exam-top); height: calc(100vh - var(--exam-top)); overflow-y: auto; }
.edu-exam-side-hint { font-size: var(--fs-xs); color: var(--text-3); margin-top: 14px; line-height: 1.8; }
/* khối phím tắt: mỗi phím 1 dòng — cột phím cố định, cột mô tả căn trái */
.edu-exam-keys { margin-top: 18px; padding: 12px 14px; border: 1px solid var(--border); border-radius: var(--r); background: var(--surface-2); }
.edu-exam-keys-t { font-size: 11px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: var(--text-3); margin-bottom: 8px; }
.edu-exam-key { display: flex; align-items: center; gap: 10px; font-size: var(--fs-xs); color: var(--text-2); padding: 4px 0; }
.edu-exam-key + .edu-exam-key { border-top: 1px dashed var(--border); }
.edu-exam-key-k { flex: 0 0 64px; display: inline-flex; align-items: center; gap: 3px; color: var(--text-3); }
.edu-exam-keys kbd { margin-left: 0; min-width: 22px; text-align: center; background: var(--surface); }
.edu-exam-key > span:last-child kbd { min-width: 18px; padding: 0 3px; }
.edu-mobile .edu-exam-keys { display: none; }
.edu-exam-pos { font-size: var(--fs-sm); color: var(--text-2); margin-bottom: 10px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.edu-exam-pos b { color: var(--primary); font-size: var(--fs-md); }
.edu-exam-pos-sec { font-size: var(--fs-xs); font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--text-3); }
.edu-exam-q { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); padding: 18px 20px; box-shadow: var(--sh-1); }
.edu-exam-q.is-flagged { border-color: var(--accent-orange); box-shadow: 0 0 0 3px rgba(230, 126, 34, .15); }
.edu-exam-q-sec { font-size: var(--fs-xs); font-weight: 800; text-transform: uppercase; letter-spacing: .04em; color: var(--text-3); margin-bottom: 8px; }
.edu-exam-q-tools { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-top: 16px; padding-top: 12px; border-top: 1px dashed var(--border); }
.edu-exam-q-tools .edu-btn { margin: 0; }
.edu-exam-flag.is-on { background: rgba(230, 126, 34, .14); color: var(--accent-orange); border-color: rgba(230, 126, 34, .4); }
.edu-exam-q-part { margin-left: auto; font-size: var(--fs-xs); font-weight: 700; color: var(--warn); }
.edu-exam-q-explain { margin-top: 12px; }
.edu-exam-q-msg { margin-top: 10px; padding: 8px 12px; border-radius: var(--r-sm); background: var(--warn-soft); color: var(--warn); font-size: var(--fs-sm); font-weight: 600; }
.edu-exam-nav { display: flex; align-items: center; gap: 10px; margin-top: 16px; }
.edu-exam-nav .edu-btn { margin: 0; }
.edu-exam-all-sec { font-size: var(--fs-md); font-weight: 800; margin: 20px 0 10px; color: var(--primary); }
.edu-exam-all-q { margin-bottom: 14px; }
.edu-exam-all-q .edu-exam-q { cursor: default; }
.edu-exam-content { background: var(--bg); }
.edu-exam-content .scroll { padding: 14px 14px 20px; }
.edu-exam-app .edu-exam-q { padding: 14px; border-radius: var(--r); }
.edu-exam-bot { height: 64px; background: var(--surface); border-top: 1px solid var(--border); display: flex; align-items: center; gap: 8px; padding: 0 10px; padding-bottom: var(--sab); box-sizing: content-box; }
.edu-exam-bot .edu-btn { margin: 0; }
.edu-exam-bot-mid { flex: 1 1 auto; min-width: 0; border: 0; background: var(--surface-3); border-radius: var(--r); height: 48px; padding: 4px 12px; display: flex; flex-direction: column; justify-content: center; gap: 4px; font: inherit; color: var(--text-1); text-align: left; }
.edu-exam-bot-pos { font-size: var(--fs-sm); font-weight: 700; }
.edu-exam-bot-pos b { color: var(--primary); }
.edu-exam-bot-prog { display: flex; align-items: center; gap: 8px; font-size: 11px; color: var(--text-3); }
.edu-exam-bot-prog .edu-progress { flex: 1; height: 5px; display: block; }
.edu-exam-bot-prog .edu-progress-bar { display: block; }

/* bảng câu */
.edu-exam-palette-sum { margin-bottom: 12px; }
.edu-exam-palette-count { font-size: var(--fs-sm); color: var(--text-2); margin-top: 6px; display: flex; align-items: center; gap: 4px; }
.edu-exam-palette-sec + .edu-exam-palette-sec { margin-top: 12px; }
.edu-exam-palette-sec-name { font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: .04em; color: var(--text-3); margin-bottom: 6px; }
.edu-exam-palette-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(40px, 1fr)); gap: 6px; }
.edu-exam-palette-btn { position: relative; height: 40px; border-radius: var(--r-sm); border: 1.5px solid var(--border-strong); background: var(--surface); color: var(--text-2); font: inherit; font-weight: 700; font-size: var(--fs-sm); cursor: pointer; transition: all .12s; }
.edu-exam-palette-btn.is-done { background: var(--primary); border-color: var(--primary); color: #fff; }
.edu-exam-palette-btn.is-part { background: var(--primary-soft2); border-color: var(--primary); color: var(--primary); }
.edu-exam-palette-btn.is-cur { box-shadow: 0 0 0 3px var(--primary-soft2); border-color: var(--primary); }
.edu-exam-palette-btn.is-ok { background: var(--ok); border-color: var(--ok); color: #fff; }
.edu-exam-palette-btn.is-bad { background: var(--danger); border-color: var(--danger); color: #fff; }
.edu-exam-palette-flag { position: absolute; top: -4px; right: -4px; width: 12px; height: 12px; border-radius: 50%; background: var(--accent-orange); border: 2px solid var(--surface); }
.edu-exam-palette-legend { display: flex; flex-wrap: wrap; gap: 6px 12px; margin-top: 12px; font-size: 11px; color: var(--text-3); }
.edu-exam-palette-legend span { display: inline-flex; align-items: center; gap: 4px; }
.edu-exam-palette-legend i { width: 12px; height: 12px; border-radius: 3px; border: 1.5px solid var(--border-strong); background: var(--surface); display: inline-block; }
.edu-exam-palette-legend i.is-done { background: var(--primary); border-color: var(--primary); }
.edu-exam-palette-legend i.is-part { background: var(--primary-soft2); border-color: var(--primary); }
.edu-exam-palette-legend i.is-flag { background: var(--accent-orange); border-color: var(--accent-orange); }
.edu-exam-palette-legend i.is-ok { background: var(--ok); border-color: var(--ok); } .edu-exam-palette-legend i.is-bad { background: var(--danger); border-color: var(--danger); }
.edu-exam-palette-sheet .edu-sheet-body { padding-bottom: calc(18px + var(--sab)); }

/* xác nhận nộp (P4) */
.edu-exam-submit-sum { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 12px; }
.edu-exam-submit-sum .edu-kpi { padding: 10px; text-align: center; }
.edu-exam-submit-list { margin-top: 8px; }
.edu-exam-submit-note { font-size: var(--fs-sm); color: var(--text-2); margin: 10px 0 0; display: flex; gap: 6px; align-items: flex-start; }
.edu-exam-submit-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 16px; }
.edu-exam-submit-actions .edu-btn { margin: 0; flex: 1 1 0; }

/* lớp phủ */
.edu-exam-overlay { position: fixed; inset: 0; z-index: 7000; background: var(--overlay-deep); display: flex; align-items: center; justify-content: center; padding: 20px; backdrop-filter: blur(4px); }
.edu-exam-overlay-box { background: var(--surface); border-radius: var(--r-xl); padding: 28px 24px; max-width: 420px; width: 100%; text-align: center; box-shadow: var(--sh-3); color: var(--text-1); }
.edu-exam-overlay-box > edu-icon { color: var(--primary); }
.edu-exam-overlay.is-locked .edu-exam-overlay-box > edu-icon { color: var(--danger); }
.edu-exam-overlay-box .edu-h2 { margin: 12px 0 6px; }
.edu-exam-overlay-box p { color: var(--text-2); line-height: 1.5; margin: 0 0 14px; }
.edu-exam-overlay-box .edu-btn { margin: 4px 0 0; }

/* đã nộp (P5) */
.edu-exam-done { text-align: center; }
.edu-exam-done-ico { width: 88px; height: 88px; border-radius: 50%; background: var(--ok-soft); color: var(--ok); display: inline-flex; align-items: center; justify-content: center; margin-bottom: 14px; animation: eduPop .4s var(--ease); }
.edu-exam-done-ico.is-timeout { background: var(--warn-soft); color: var(--warn); }
.edu-exam-done-sub { color: var(--text-2); font-size: var(--fs-sm); margin-top: 4px; }
.edu-exam-receipt { font-family: var(--font-mono); font-size: var(--fs-md); font-weight: 700; letter-spacing: .12em; background: var(--surface-3); padding: 2px 8px; border-radius: 6px; color: var(--text-1); }
.edu-exam-done-score { margin-top: 18px; }
.edu-exam-done-big { font-size: 56px; font-weight: 800; letter-spacing: -.03em; line-height: 1; color: var(--primary); font-variant-numeric: tabular-nums; }
.edu-exam-done-big small { font-size: var(--fs-lg); color: var(--text-3); font-weight: 700; margin-left: 4px; letter-spacing: 0; }
.edu-exam-done-big.is-ok { color: var(--ok); } .edu-exam-done-big.is-warn { color: var(--warn); } .edu-exam-done-big.is-danger { color: var(--danger); }
.edu-exam-done-pending { margin-top: 18px; display: flex; align-items: flex-start; gap: 10px; text-align: left; color: var(--text-2); }
.edu-exam-done-pending edu-icon { color: var(--info); flex: 0 0 auto; margin-top: 2px; }
.edu-exam-done-gami { margin-top: 12px; background: linear-gradient(135deg, rgba(252, 218, 12, .18), var(--surface)); }
.edu-exam-done-xp { font-size: var(--fs-xl); font-weight: 800; color: var(--accent-orange); }
.edu-exam-done-xp small { font-size: var(--fs-sm); color: var(--text-3); font-weight: 600; }
.edu-exam-done-badges { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 12px; }
.edu-exam-done-actions { display: flex; flex-direction: column; gap: 10px; margin-top: 22px; }
.edu-exam-done-actions .edu-btn { margin: 0; width: 100%; }
.edu-exam-done.is-kid .edu-h1 { font-size: var(--fs-xxl); }
@media (min-width: 600px) { .edu-exam-done-actions { flex-direction: row; justify-content: center; } .edu-exam-done-actions .edu-btn { width: auto; min-width: 160px; } }

/* ====================== xem lại (P6) ====================== */
.edu-review-page .edu-exam-top { position: sticky; }
.edu-review-main { flex: 1 1 auto; padding: 20px 24px 60px; max-width: 920px; margin: 0 auto; width: 100%; }
.edu-exam-app .edu-review-main { padding: 0; max-width: none; }
.edu-review-sum { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.edu-review-sum-main { flex: 1 1 260px; min-width: 0; }
.edu-review-title { font-weight: 800; font-size: var(--fs-md); }
.edu-review-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.edu-review-score { text-align: center; flex: 0 0 auto; }
.edu-review-score .edu-exam-done-big { font-size: 44px; }
.edu-review-msg { margin-top: 12px; display: flex; gap: 10px; align-items: flex-start; color: var(--text-2); }
.edu-review-msg edu-icon { color: var(--info); flex: 0 0 auto; margin-top: 2px; }
.edu-review-buckets { display: flex; flex-direction: column; gap: 10px; }
.edu-review-bucket-head { display: flex; justify-content: space-between; font-size: var(--fs-sm); margin-bottom: 4px; }
.edu-review-bucket-head b.is-ok { color: var(--ok); } .edu-review-bucket-head b.is-warn { color: var(--warn); } .edu-review-bucket-head b.is-danger { color: var(--danger); }
.edu-review-filter { padding: 2px; text-transform: none; letter-spacing: 0; }
.edu-review-filter .edu-seg-item { min-height: 30px; font-size: var(--fs-xs); padding: 0 10px; }
.edu-review-sec { font-size: var(--fs-sm); font-weight: 800; color: var(--primary); margin: 14px 0 8px; }
.edu-review-q { margin-top: 12px; }
.edu-review-q-foot { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 10px; padding-top: 10px; border-top: 1px dashed var(--border); }
.edu-exam-regrade-list { display: flex; flex-direction: column; gap: 6px; max-height: 40vh; overflow-y: auto; margin-bottom: 12px; padding: 2px; }
.edu-exam-regrade-item { padding: 8px 10px; border-radius: var(--r-sm); border: 1px solid var(--border); width: 100%; }
.edu-exam-regrade-item.is-on { border-color: var(--primary-line); background: var(--primary-soft); }

/* ====================== responsive ====================== */
@media (max-width: 1024px) { .edu-exam-side { flex-basis: 250px; } }
@media (max-width: 767px) {
  .edu-exam-web .edu-exam-body { flex-direction: column; }
  .edu-exam-web .edu-exam-side { position: static; height: auto; flex: 0 0 auto; border-left: 0; border-top: 1px solid var(--border); }
  .edu-exam-web .edu-exam-main { padding: 14px; }
  .edu-exam-top { gap: 8px; padding: 0 10px; }
  .edu-exam-top-sub, .edu-exam-save span { display: none; }
  .edu-exam-submit-btn { padding: 0 12px; }
  .edu-q-pairs-w { grid-template-columns: 1fr; gap: 10px; }
  .edu-q-test { grid-template-columns: 1fr; }
  .edu-exam-grid { grid-template-columns: 1fr; }
  .edu-review-main { padding: 14px; }
}
/* tablet app: 2 cột (câu + bảng câu) */
@media (min-width: 768px) {
  .edu-exam-app .edu-exam-body { display: grid; grid-template-columns: minmax(0, 1fr) 240px; gap: 16px; align-items: start; }
  .edu-exam-app .edu-exam-content .scroll { padding: 18px 24px 24px; }
}
/* chế độ Nhí */
[data-ui="1"] .edu-q-opt { padding: 14px; border-radius: var(--r-lg); }
[data-ui="1"] .edu-q-opt-letter { width: 36px; height: 36px; flex-basis: 36px; }
[data-ui="1"] .edu-exam-palette-btn { height: 46px; }

/* ===== Đợt sửa 23/10/2026 (M2) ===== */
/* 2 menu Bài tập / Bài thi + góc học tập của con (PH) */
.edu-seg-3 .edu-seg-item { padding: 0 6px; min-width: 0; }
.edu-exam-nhom { margin-bottom: 8px; }
.edu-exam-kidnote { display: flex; gap: 8px; align-items: flex-start; color: var(--text-2); font-size: var(--fs-sm); margin-bottom: 12px; }

/* Trình soạn code (core/edu-code-editor.js — CodeMirror 5, giao diện tối khớp .edu-q-code) */
.edu-ce { position: relative; }
.edu-ce-quick { display: flex; flex-wrap: wrap; gap: 6px; padding: 6px 8px; background: #121B30; border-bottom: 1px solid rgba(255, 255, 255, .08); }
.edu-ce-qbtn { min-height: 32px; padding: 2px 10px; border-radius: 8px; border: 1px solid rgba(255, 255, 255, .16); background: rgba(255, 255, 255, .06); color: #E6EDF7; font-family: var(--font-mono); font-size: 13px; cursor: pointer; }
.edu-ce-qbtn:active { background: rgba(255, 255, 255, .18); }
.edu-ce-qspacer { flex: 1; }
.edu-ce-mode { min-height: 32px; padding: 2px 10px; border: 0; background: transparent; color: #9FB3D9; font-size: 12px; text-decoration: underline; cursor: pointer; }
.edu-ce-host .CodeMirror { height: auto; min-height: 260px; font-family: var(--font-mono); font-size: 14px; line-height: 1.55; }
.edu-ce-host .CodeMirror-scroll { min-height: 260px; max-height: 62vh; }
.edu-ce.is-simple .edu-ce-host { display: none; }
.edu-ce.is-ro .edu-ce-host .CodeMirror, .edu-ce.is-ro .edu-ce-host .CodeMirror-scroll { min-height: 80px; }
.edu-ce-loading { padding: 10px 14px; color: #9FB3D9; font-size: 13px; }
.edu-ce-warns { display: flex; flex-direction: column; gap: 2px; padding: 6px 8px; background: #2A1F0A; border-top: 1px solid rgba(255, 196, 0, .25); }
.edu-ce-warn { text-align: left; border: 0; background: transparent; color: #FFD27A; font-size: 13px; padding: 3px 4px; cursor: pointer; }
.edu-ce-help { padding: 4px 10px 6px; color: #7F93B8; font-size: 11.5px; }
.edu-ce-help kbd { background: rgba(255, 255, 255, .1); color: #E6EDF7; border-radius: 4px; padding: 0 4px; font-size: 11px; }
[data-ui="1"] .edu-ce-qbtn { min-height: 40px; font-size: 15px; padding: 4px 14px; }
@media (max-width: 767px) { .edu-ce-help { display: none; } .edu-ce-host .CodeMirror { font-size: 15px; } }
.cm-s-edu-dark.CodeMirror { background: #0F1626; color: #E6EDF7; }
.cm-s-edu-dark .CodeMirror-gutters { background: #0B1120; border-right: 1px solid rgba(255, 255, 255, .06); }
.cm-s-edu-dark .CodeMirror-linenumber { color: #5B6B8C; }
.cm-s-edu-dark .CodeMirror-cursor { border-left: 2px solid #FFCC4D; }
.cm-s-edu-dark .CodeMirror-activeline-background { background: rgba(255, 255, 255, .05); }
.cm-s-edu-dark .CodeMirror-selected, .cm-s-edu-dark .CodeMirror-focused .CodeMirror-selected { background: rgba(98, 150, 255, .28); }
.cm-s-edu-dark .CodeMirror-matchingbracket { color: #7CFFB2 !important; text-decoration: underline; }
.cm-s-edu-dark .cm-keyword { color: #FF8BD0; font-weight: 600; }
.cm-s-edu-dark .cm-builtin, .cm-s-edu-dark .cm-def { color: #7CC7FF; }
.cm-s-edu-dark .cm-variable, .cm-s-edu-dark .cm-variable-2 { color: #E6EDF7; }
.cm-s-edu-dark .cm-variable-3, .cm-s-edu-dark .cm-type { color: #8FE3C3; }
.cm-s-edu-dark .cm-string, .cm-s-edu-dark .cm-string-2 { color: #FFD27A; }
.cm-s-edu-dark .cm-number, .cm-s-edu-dark .cm-atom { color: #B9A2FF; }
.cm-s-edu-dark .cm-comment { color: #7D8BA8; font-style: italic; }
.cm-s-edu-dark .cm-meta { color: #FF9F6B; }
.cm-s-edu-dark .cm-operator { color: #C9D5EA; }
.cm-s-edu-dark .cm-tag { color: #FF8BD0; } .cm-s-edu-dark .cm-attribute { color: #7CC7FF; }
.cm-s-edu-dark .edu-ce-warnline { background: rgba(255, 196, 0, .12); }
.CodeMirror-hints { z-index: 10050; font-family: var(--font-mono); font-size: 13.5px; border-radius: 8px; max-height: 40vh; }
.CodeMirror-hint { padding: 4px 10px; }
.CodeMirror-hint.edu-ce-hint-snip::after { content: ' mẫu'; color: #8a94a6; font-size: 11px; }
.CodeMirror-hint.edu-ce-hint-var { color: #1a63c4; }
li.CodeMirror-hint-active { background: #1a63c4; color: #fff; }

/* Điền khuyết gõ chữ + tự luận ngắn */
.edu-q-blanks { display: flex; flex-direction: column; gap: 8px; margin-top: 10px; }
.edu-q-blank-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.edu-q-blank-no { font-weight: 800; color: var(--primary); min-width: 34px; }
.edu-q-blank-input { flex: 1 1 220px; max-width: 420px; }
.edu-q-blank-row.is-ok .edu-q-blank-input { border-color: var(--ok); }
.edu-q-blank-row.is-bad .edu-q-blank-input { border-color: var(--danger); }
.edu-q-blank-key { font-size: var(--fs-sm); color: var(--ok); font-weight: 600; }
.edu-q-short { max-width: 520px; }

/* Ghi chú ảnh của GV + nhận xét tổng (xem lại) */
.edu-q-annot { margin-top: 10px; }
.edu-q-annot-item { display: flex; flex-direction: column; gap: 4px; }
.edu-q-annot-note { font-size: var(--fs-xs); color: var(--text-2); max-width: 180px; }
.edu-review-note { margin-top: 12px; border-left: 4px solid var(--primary); }
.edu-review-note-text { white-space: pre-wrap; line-height: 1.55; margin: 4px 0 6px; }

/* =====================================================================================
   Xem lại bài làm (P6) — làm lại 24/10: thẻ điểm có vòng tròn · dải thống kê · bản đồ câu · web rộng 2 cột (trái tổng quan dính, phải từng câu)
   ===================================================================================== */
.edu-review-main { max-width: 1180px; }
.edu-rv-hero { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; padding: 22px 24px; border-radius: var(--r-lg); background: var(--surface); border: 1px solid var(--border); box-shadow: var(--sh-2); position: relative; overflow: hidden; }
.edu-rv-hero::before { content: ''; position: absolute; inset: 0 auto 0 0; width: 6px; background: linear-gradient(180deg, var(--primary), var(--navy)); }
.edu-rv-hero-main { flex: 1 1 320px; min-width: 0; }
.edu-rv-kicker { font-size: var(--fs-xs); font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: var(--primary); }
.edu-rv-title { font-size: var(--fs-xl); font-weight: 800; letter-spacing: -.01em; line-height: 1.25; margin: 4px 0 10px; color: var(--text-1); }
.edu-rv-meta { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: var(--fs-sm); color: var(--text-2); }
.edu-rv-meta span { display: inline-flex; align-items: center; gap: 6px; }
.edu-rv-meta edu-icon { color: var(--text-3); }
.edu-rv-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.edu-rv-score { flex: 0 0 auto; display: flex; flex-direction: column; align-items: center; gap: 6px; }
.edu-rv-ring { position: relative; width: 112px; height: 112px; }
.edu-rv-ring .edu-ring-label { display: none; }
.edu-rv-ring.is-ok .edu-ring-fg { stroke: var(--ok); }
.edu-rv-ring.is-warn .edu-ring-fg { stroke: var(--accent-orange); }
.edu-rv-ring.is-danger .edu-ring-fg { stroke: var(--danger); }
.edu-rv-ring-v { position: absolute; inset: 0; display: flex; align-items: baseline; justify-content: center; padding-top: 36px; }
.edu-rv-ring-v b { font-size: 32px; font-weight: 800; letter-spacing: -.02em; color: var(--text-1); line-height: 1; }
.edu-rv-ring-v small { font-size: var(--fs-sm); color: var(--text-3); font-weight: 700; margin-left: 2px; }
.edu-rv-ring.is-ok .edu-rv-ring-v b { color: var(--ok); }
.edu-rv-ring.is-warn .edu-rv-ring-v b { color: var(--accent-orange); }
.edu-rv-ring.is-danger .edu-rv-ring-v b { color: var(--danger); }
.edu-rv-score-sub { font-size: var(--fs-sm); color: var(--text-2); font-weight: 600; }
.edu-rv-score.is-wait .edu-rv-wait-ico { width: 84px; height: 84px; border-radius: 50%; background: var(--warn-soft); color: var(--warn); display: flex; align-items: center; justify-content: center; }
.edu-rv-msg { display: flex; gap: 10px; align-items: flex-start; margin-top: 14px; padding: 14px 16px; border-radius: var(--r); background: var(--info-soft); color: var(--info); font-weight: 600; }
.edu-rv-empty { margin-top: 16px; padding: 40px 20px; text-align: center; border: 1.5px dashed var(--border-strong); border-radius: var(--r-lg); background: var(--surface); }
.edu-rv-empty-ico { width: 68px; height: 68px; border-radius: 20px; background: var(--surface-3); color: var(--text-3); display: inline-flex; align-items: center; justify-content: center; margin-bottom: 12px; }
.edu-rv-empty-t { font-weight: 800; font-size: var(--fs-md); color: var(--text-1); }
.edu-rv-empty-s { font-size: var(--fs-sm); color: var(--text-3); max-width: 440px; margin: 6px auto 0; line-height: 1.5; }
.edu-rv-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); gap: 10px; margin-top: 14px; }
.edu-rv-stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r); padding: 12px 14px; display: flex; flex-direction: column; gap: 2px; box-shadow: var(--sh-1); }
.edu-rv-stat b { font-size: var(--fs-xl); font-weight: 800; line-height: 1.1; color: var(--text-1); }
.edu-rv-stat span { font-size: var(--fs-xs); font-weight: 700; text-transform: uppercase; letter-spacing: .03em; color: var(--text-3); }
.edu-rv-stat.is-ok b { color: var(--ok); } .edu-rv-stat.is-bad b { color: var(--danger); } .edu-rv-stat.is-wait b { color: var(--warn); }
.edu-rv-note { margin-top: 14px; padding: 14px 16px; border-radius: var(--r); background: var(--primary-soft); border: 1px solid var(--primary-line); }
.edu-rv-note-t { display: flex; align-items: center; gap: 6px; font-weight: 700; color: var(--primary); }
.edu-rv-note-text { white-space: pre-wrap; line-height: 1.55; margin: 6px 0 4px; color: var(--text-1); }
.edu-rv-grid { display: block; margin-top: 16px; }
.edu-rv-col { min-width: 0; }
.edu-rv-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); padding: 14px 16px; box-shadow: var(--sh-1); margin-bottom: 14px; }
.edu-rv-card-t { display: flex; align-items: center; justify-content: space-between; font-size: var(--fs-xs); font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: var(--text-3); margin-bottom: 10px; }
.edu-rv-card .edu-review-bucket + .edu-review-bucket { margin-top: 10px; }
.edu-rv-map-sec { display: flex; justify-content: space-between; font-size: var(--fs-xs); font-weight: 700; color: var(--text-2); margin: 8px 0 6px; }
.edu-rv-map { display: grid; grid-template-columns: repeat(auto-fill, minmax(38px, 1fr)); gap: 6px; }
.edu-rv-dot { position: relative; height: 38px; border-radius: 10px; border: 1px solid var(--border-strong); background: var(--surface); font: inherit; font-size: var(--fs-sm); font-weight: 700; color: var(--text-2); cursor: pointer; transition: transform .1s; }
.edu-rv-dot:active { transform: scale(.94); }
.edu-rv-dot.is-correct { background: var(--ok); border-color: var(--ok); color: #fff; }
.edu-rv-dot.is-wrong { background: var(--danger); border-color: var(--danger); color: #fff; }
.edu-rv-dot.is-blank { background: var(--surface-3); border-style: dashed; color: var(--text-3); }
.edu-rv-dot.is-pending { background: var(--warn-soft); border-color: var(--warn); color: var(--warn); }
.edu-rv-dot i { position: absolute; top: -3px; right: -3px; width: 9px; height: 9px; border-radius: 50%; background: var(--accent-orange); box-shadow: 0 0 0 2px var(--surface); }
.edu-rv-legend { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 12px; font-size: var(--fs-xs); color: var(--text-3); }
.edu-rv-legend span { display: inline-flex; align-items: center; gap: 5px; }
.edu-rv-legend i { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }
.edu-rv-legend i.is-correct { background: var(--ok); } .edu-rv-legend i.is-wrong { background: var(--danger); }
.edu-rv-legend i.is-blank { background: var(--surface-3); border: 1px dashed var(--border-strong); } .edu-rv-legend i.is-pending { background: var(--warn); }
.edu-rv-qhead { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; font-size: var(--fs-xs); font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: var(--text-3); margin: 0 2px 4px; }
.edu-review-q { scroll-margin-top: 84px; border-left: 4px solid var(--border-strong); }
.edu-review-q.is-correct { border-left-color: var(--ok); }
.edu-review-q.is-wrong { border-left-color: var(--danger); }
.edu-review-q.is-pending { border-left-color: var(--warn); }
@media (min-width: 1024px) {
  .edu-exam-web .edu-rv-grid { display: grid; grid-template-columns: 320px minmax(0, 1fr); gap: 20px; align-items: start; }
  .edu-exam-web .edu-rv-grid > .edu-rv-col:first-child { position: sticky; top: 84px; }
  .edu-exam-web .edu-rv-col.is-main .edu-review-q:first-of-type { margin-top: 8px; }
}
@media (max-width: 600px) {
  .edu-rv-hero { padding: 18px 16px; gap: 16px; }
  .edu-rv-title { font-size: var(--fs-lg); }
  .edu-rv-score { width: 100%; flex-direction: row; justify-content: flex-start; gap: 14px; }
}

.edu-rv-score.is-empty .edu-rv-wait-ico { width: 84px; height: 84px; border-radius: 50%; background: var(--surface-3); color: var(--text-3); display: flex; align-items: center; justify-content: center; }
.edu-rv-empty-btn { margin-top: 16px; }

/* ===== Thẻ bài (danh sách Bài tập / Bài thi) — 24/10: thẻ cùng hàng bằng chiều cao, chân thẻ dính đáy, hàng trên không xuống dòng ===== */
.edu-exam-grid { align-items: stretch; }
.edu-exam-grid > div { display: flex; min-width: 0; }
.edu-exam-grid > div > .edu-exam-card { flex: 1 1 auto; display: flex; flex-direction: column; min-width: 0; border-radius: var(--r-lg); padding: 16px 18px 14px 20px; }
.edu-exam-grid .edu-exam-card-foot { margin-top: auto; padding-top: 14px; border-top: 1px dashed var(--border); }
.edu-exam-grid .edu-exam-card-meta { margin-bottom: 4px; }
.edu-exam-card-top { flex-wrap: nowrap; min-width: 0; }
.edu-exam-card-top > .edu-chip { flex: 0 0 auto; }
.edu-exam-card-mon, .edu-exam-card-ca { flex: 0 1 auto; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.edu-exam-card-time { flex: 0 0 auto; white-space: nowrap; }
.edu-exam-card-title { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-top: 2px; }
.edu-xchip { font-size: 12.5px; padding: 5px 11px; box-shadow: inset 0 0 0 1px rgba(15, 30, 61, .04); }
/* ===== Chip thẻ bài v3 (24/10): mỗi loại thông tin một KIỂU riêng (không chỉ khác màu) — lớp nhãn đặc · buổi viền · loại đề tag vạch trái · số câu / thời gian / lượt khối số đậm · điểm nền vàng ===== */
.edu-exam-card .edu-exam-card-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 7px; margin-top: 12px; }
.edu-exam-card .edu-xchip { font-size: 12.5px; font-weight: 600; line-height: 1.2; padding: 6px 11px; border-radius: 999px; gap: 6px; box-shadow: none; border: 1px solid transparent; }
.edu-exam-card .edu-xchip b { font-weight: 800; font-variant-numeric: tabular-nums; }
.edu-exam-card .edu-xchip edu-icon { opacity: 1; }
/* lớp: nhãn đặc màu chủ đạo */
.edu-exam-card .edu-xchip.is-lop { background: var(--primary); color: #fff; font-weight: 700; box-shadow: 0 2px 6px rgba(30, 64, 175, .22); max-width: 260px; }
/* buổi: viền xanh, nền trắng */
.edu-exam-card .edu-xchip.is-buoi { background: var(--surface); color: var(--info); border-color: var(--info); }
/* loại đề: tag góc vuông + vạch trái */
.edu-exam-card .edu-xchip.is-loai { border-radius: 6px; background: rgba(142, 68, 173, .1); color: var(--purple); border-left: 4px solid var(--purple); padding-left: 9px; font-weight: 700; }
/* số câu: khối xám viền nét đứt */
.edu-exam-card .edu-xchip.is-cau { border-radius: 8px; background: var(--surface-2); color: var(--text-2); border: 1px dashed var(--border-strong, #c8d0dc); }
.edu-exam-card .edu-xchip.is-cau b { color: var(--text-1); }
/* thời gian: cam viền */
.edu-exam-card .edu-xchip.is-time { border-radius: 8px; background: var(--warn-soft); color: var(--accent-orange); border-color: rgba(230, 126, 34, .45); }
/* lượt: xanh lá, hết lượt → đỏ */
.edu-exam-card .edu-xchip.is-luot { border-radius: 8px; background: var(--ok-soft); color: var(--ok); border-color: rgba(22, 163, 74, .35); }
.edu-exam-card .edu-xchip.is-luot.is-full { background: var(--danger-soft); color: var(--danger); border-color: rgba(220, 38, 38, .35); }
/* điểm tối đa: nền vàng đậm */
.edu-exam-card .edu-xchip.is-diem { background: linear-gradient(135deg, #ffd66b, #f5a524); color: #5c3b00; font-weight: 700; box-shadow: 0 2px 6px rgba(245, 165, 36, .3); }
.edu-exam-card .edu-xchip.is-diem b { color: #3d2700; }
[data-dark] .edu-exam-card .edu-xchip.is-buoi, [data-dark] .edu-exam-card .edu-xchip.is-cau { background: transparent; }
/* ===== Câu đọc ngữ liệu v2 (q2.html, 24/10): ngữ liệu = khung đọc có nhãn + vạch trái · phải = hướng dẫn, tiến độ, thẻ câu con (số tròn đổi màu khi đã chọn) ===== */
.edu-q2 .edu-q-opt, .edu-q2 .edu-q-sub { box-sizing: border-box; }
.edu-exam-web .edu-q2.edu-q-split, .edu-web .edu-q2.edu-q-split { grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: 20px; align-items: start; }
.edu-q2 .edu-q-ngulieu { padding: 0; background: var(--surface); border: 1px solid var(--border); border-left: 4px solid var(--primary); border-radius: var(--r-lg); box-shadow: var(--sh-1); overflow: hidden; }
.edu-exam-web .edu-q2 .edu-q-ngulieu { top: 84px; max-height: calc(100vh - 170px); display: flex; flex-direction: column; overflow: hidden; }
.edu-q-ngulieu-head { display: flex; align-items: center; gap: 8px; padding: 10px 14px; background: var(--primary-soft); border-bottom: 1px solid var(--primary-line); color: var(--primary); font-size: var(--fs-sm); flex: 0 0 auto; }
.edu-q-ngulieu-head b { font-weight: 800; letter-spacing: .02em; text-transform: uppercase; font-size: 12px; }
.edu-q-ngulieu-ico { width: 26px; height: 26px; border-radius: 8px; background: var(--surface); display: inline-flex; align-items: center; justify-content: center; }
.edu-q2 .edu-q-ngulieu-toggle { width: auto; margin-left: auto; display: inline-flex; align-items: center; gap: 4px; font-size: var(--fs-xs); }
.edu-q2 .edu-q-ngulieu.is-open .edu-q-ngulieu-toggle { margin-bottom: 0; }
.edu-q2 .edu-q-ngulieu-body { padding: 16px 18px; font-size: 16px; line-height: 1.8; color: var(--text-1); overflow-y: auto; text-align: justify; }
.edu-q2 .edu-q-ngulieu-body p { margin: 0 0 10px; } .edu-q2 .edu-q-ngulieu-body p:last-child { margin-bottom: 0; }
.edu-q2 .edu-q-subs { gap: 12px; min-width: 0; }
.edu-q2-guide { display: flex; align-items: flex-start; gap: 10px; padding: 10px 14px; border-radius: var(--r); background: var(--info-soft); color: var(--info); font-weight: 700; font-size: var(--fs); line-height: 1.5; }
.edu-q2-guide edu-icon { flex: 0 0 auto; margin-top: 3px; }
.edu-q2-guide .edu-q-html { color: var(--text-1); }
.edu-q2-progress { display: flex; align-items: center; gap: 12px; font-size: var(--fs-xs); color: var(--text-3); font-weight: 600; }
.edu-q2-progress b { color: var(--primary); font-weight: 800; }
.edu-q2-progress i { flex: 1 1 auto; height: 6px; border-radius: 99px; background: var(--surface-3); overflow: hidden; }
.edu-q2-progress em { display: block; height: 100%; border-radius: 99px; background: var(--primary); transition: width .25s var(--ease); }
.edu-q2 .edu-q-sub { padding: 14px; border-radius: var(--r-lg); border: 1px solid var(--border); background: var(--surface); box-shadow: var(--sh-1); transition: border-color .15s var(--ease); }
.edu-q2 .edu-q-sub.is-done { border-color: var(--primary-line); }
.edu-q2 .edu-q-sub.is-ok { border-color: var(--ok); } .edu-q2 .edu-q-sub.is-bad { border-color: var(--danger); }
.edu-q2 .edu-q-sub-stem { display: flex; align-items: flex-start; gap: 10px; font-weight: 700; font-size: var(--fs); line-height: 1.5; color: var(--text-1); margin-bottom: 12px; }
.edu-q2 .edu-q-sub-no { flex: 0 0 28px; width: 28px; height: 28px; margin: 0; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 800; background: var(--surface-3); color: var(--text-2); transition: all .15s var(--ease); }
.edu-q2 .edu-q-sub.is-done .edu-q-sub-no { background: var(--primary); color: #fff; }
.edu-q2 .edu-q-sub.is-ok .edu-q-sub-no { background: var(--ok); color: #fff; } .edu-q2 .edu-q-sub.is-bad .edu-q-sub-no { background: var(--danger); color: #fff; }
.edu-q2 .edu-q-sub-stem .edu-q-html { padding-top: 3px; min-width: 0; }
.edu-q2 .edu-q-options-sm { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; padding-left: 38px; }
.edu-q2 .edu-q-options-sm .edu-q-opt { width: 100%; min-width: 0; padding: 9px 12px; border-width: 1.5px; align-items: center; }
.edu-q2 .edu-q-options-sm.is-long { grid-template-columns: minmax(0, 1fr); }
@media (max-width: 1280px) { .edu-exam-web .edu-q2.edu-q-split { grid-template-columns: minmax(0, 1fr); } .edu-exam-web .edu-q2 .edu-q-ngulieu { position: static; max-height: 340px; } }
@media (max-width: 600px) { .edu-q2 .edu-q-options-sm { grid-template-columns: minmax(0, 1fr); padding-left: 0; } }
/* phòng thi app: thân câu xếp dọc ở mọi khổ (flex ngang / lưới tablet cũ đẩy dòng "Phần …" thành cột hẹp bên trái — app không có cột bảng câu trong thân) */
.edu-exam.edu-exam-app .edu-exam-body { display: flex; flex-direction: column; }
@media (min-width: 768px) { .edu-exam.edu-exam-app .edu-exam-body { max-width: 860px; margin: 0 auto; width: 100%; } }
/* ===== Scratch: chạy thử dự án trong cổng (q12.html · EduScratch — scratch.mit.edu embed / TurboWarp cho .sb3), 25/10 ===== */
.edu-q-scratch-run { display: block; margin-top: 12px; }
.edu-q-scratch-run .edu-btn { margin: 0; vertical-align: middle; }
.edu-q-scratch-run-hint { font-size: var(--fs-xs); color: var(--text-3); margin-left: 10px; vertical-align: middle; }
.edu-q-scratch-player { margin-top: 10px; width: 100%; max-width: 640px; aspect-ratio: 485 / 402; border-radius: 14px; overflow: hidden; border: 1px solid var(--border); background: #111; box-shadow: var(--sh-1); }
.edu-q-scratch-player iframe { width: 100%; height: 100%; border: 0; display: block; }
/* ===== Scratch 26/10: 3 cách làm bài (trình soạn trong cổng / link / file) · bản nộp · kịch bản kiểm tra · cửa sổ trình soạn (.edu-se) ===== */
.edu-q-scratch-sample-acts { display: flex; flex-wrap: wrap; gap: 6px; }
.edu-q-scratch-run .edu-btn + .edu-btn { margin-left: 6px; }
.edu-q-sw-tabs { display: inline-flex; flex-wrap: wrap; gap: 4px; padding: 4px; margin-bottom: 10px; border-radius: 12px; background: var(--surface-3); }
.edu-q-sw-tabs button { display: inline-flex; align-items: center; gap: 6px; height: 36px; padding: 0 14px; border: 0; border-radius: 9px; background: transparent; color: var(--text-2); font: inherit; font-size: var(--fs-sm); font-weight: 700; cursor: pointer; }
.edu-q-sw-tabs button.is-on { background: var(--surface); color: var(--primary); box-shadow: var(--sh-1); }
.edu-q-sw-pane { margin-bottom: 8px; }
.edu-q-sw-editor { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border: 1px solid rgba(133, 92, 214, .3); border-radius: 14px; background: linear-gradient(135deg, rgba(133, 92, 214, .1), var(--surface)); }
.edu-q-sw-ico { flex: 0 0 auto; width: 44px; height: 44px; border-radius: 13px; display: inline-flex; align-items: center; justify-content: center; background: #855cd6; color: #fff; }
.edu-q-sw-txt { flex: 1 1 auto; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.edu-q-sw-txt small { color: var(--text-2); font-size: var(--fs-xs); }
.edu-q-sw-editor .edu-btn { margin: 0; flex: 0 0 auto; background: #855cd6; box-shadow: 0 6px 16px rgba(133, 92, 214, .3); }
.edu-q-sw-pick { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin-top: 8px; font-size: var(--fs-xs); color: var(--text-3); font-weight: 600; }
.edu-q-sw-chip { display: inline-flex; align-items: center; gap: 4px; height: 28px; padding: 0 10px; border: 1px solid var(--border-strong); border-radius: 999px; background: var(--surface); color: var(--text-2); font: inherit; font-size: 12px; font-weight: 700; cursor: pointer; }
.edu-q-sw-chip.is-on { border-color: var(--ok); background: var(--ok-soft); color: var(--ok); }
.edu-q-sw-chip:disabled { cursor: default; }
.edu-q-sc { margin-top: 12px; display: flex; flex-direction: column; gap: 8px; }
.edu-q-sc-row { padding: 10px 12px; border: 1px solid var(--border); border-left-width: 4px; border-radius: 12px; background: var(--surface); }
.edu-q-sc-row.is-ok { border-left-color: var(--ok); }
.edu-q-sc-row.is-bad { border-left-color: var(--danger); }
.edu-q-sc-row.is-unk { border-left-color: var(--warn); }
.edu-q-sc-h { display: flex; align-items: center; gap: 8px; }
.edu-q-sc-row.is-ok .edu-q-sc-h > edu-icon { color: var(--ok); } .edu-q-sc-row.is-bad .edu-q-sc-h > edu-icon { color: var(--danger); } .edu-q-sc-row.is-unk .edu-q-sc-h > edu-icon { color: var(--warn); }
.edu-q-sc-st { margin-left: auto; font-size: var(--fs-xs); font-weight: 800; }
.edu-q-sc-row.is-ok .edu-q-sc-st { color: var(--ok); } .edu-q-sc-row.is-bad .edu-q-sc-st { color: var(--danger); } .edu-q-sc-row.is-unk .edu-q-sc-st { color: var(--warn); }
.edu-q-sc-steps { margin: 4px 0 2px 25px; font-size: var(--fs-xs); color: var(--text-3); }
.edu-q-sc-chk { margin-left: 25px; font-size: var(--fs-sm); color: var(--text-2); display: flex; align-items: flex-start; gap: 4px; }
.edu-q-sc-chk.is-ok > edu-icon { color: var(--ok); } .edu-q-sc-chk.is-bad > edu-icon { color: var(--danger); }
.edu-q-sc-got { color: var(--text-3); }
.edu-q-sc-exp, .edu-q-sc-why, .edu-q-sc-err { margin: 4px 0 0 25px; font-size: var(--fs-sm); color: var(--text-2); }
.edu-q-sc-why { color: var(--text-1); }
.edu-q-sc-err { color: var(--danger); }
/* cửa sổ trình soạn Scratch toàn màn hình */
.edu-se { position: fixed; inset: 0; z-index: 9000; display: flex; flex-direction: column; background: #e9f1fc; }
.edu-se-bar { flex: 0 0 auto; display: flex; align-items: center; gap: 10px; height: 52px; padding: 0 12px; background: #fff; border-bottom: 1px solid #d9e3f2; box-shadow: 0 1px 3px rgba(0, 0, 0, .06); color: #1f2937; }
.edu-se-logo { padding: 4px 10px; border-radius: 8px; background: #855cd6; color: #fff; font-weight: 800; font-size: 13px; }
.edu-se-title { font-size: 15px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.edu-se-status { font-size: 12.5px; font-weight: 600; color: #6b7280; white-space: nowrap; }
.edu-se-status.is-ok { color: #0f7a45; } .edu-se-status.is-warn { color: #b26a00; } .edu-se-status.is-bad { color: #c81e1e; }
.edu-se-sp { flex: 1 1 auto; }
.edu-se-bar .edu-btn { margin: 0; }
.edu-se-body { position: relative; flex: 1 1 auto; min-height: 0; }
.edu-se-frame { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; display: block; }
.edu-se-loading { position: absolute; inset: 0; z-index: 1; display: flex; align-items: center; justify-content: center; color: #855cd6; font-weight: 700; background: #e9f1fc; pointer-events: none; }
.edu-se.is-view .edu-se-logo { background: #4b5563; }