@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Noto+Sans+Thai:wght@400;500;600;700&display=swap');
:root{--ink:#24212b;--muted:#777381;--teal:#875ff2;--teal-dark:#7046dc;--mint:#eee9fb;--paper:#f7f7f8;--white:#fff;--line:#e8e6eb;--amber:#9b7e74;--shadow:0 16px 48px rgba(32,27,43,.08)}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:'DM Sans','Noto Sans Thai',sans-serif;font-size:14px}.sidebar{width:248px;position:fixed;inset:0 auto 0 0;background:#fff;border-right:1px solid var(--line);padding:25px 16px 14px;display:flex;flex-direction:column;z-index:5}.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--ink);padding:1px 10px 35px}.brand-mark{width:36px;height:36px;border-radius:12px;background:#dff0ec;color:var(--teal);font-size:24px;display:grid;place-items:center}.brand b{font-size:16px;letter-spacing:.02em;display:block}.brand small{font-size:11px;color:var(--muted);display:block;margin-top:2px}.workspace-label{font-size:10px;letter-spacing:.16em;color:#98a6a2;font-weight:700;padding:0 12px 11px}.main-nav{display:grid;gap:5px}.nav-item{border:0;background:transparent;color:#647570;display:flex;align-items:center;gap:13px;text-align:left;padding:11px 13px;border-radius:10px;font:inherit;font-size:13px;font-weight:500;cursor:pointer;transition:.15s}.nav-item span{font-size:19px;width:19px;text-align:center}.nav-item:hover{background:#f4f8f6;color:var(--ink)}.nav-item.active{background:#e8f3f0;color:var(--teal-dark);font-weight:700}.sidebar-bottom{margin-top:auto}.connection{padding:12px 10px;display:flex;align-items:center;gap:9px;border-top:1px solid var(--line);color:var(--ink)}.connection .dot{width:8px;height:8px;border-radius:50%;background:#d59b42}.connection b,.user-mini b{display:block;font-size:11px}.connection small,.user-mini small{display:block;color:var(--muted);font-size:10px;margin-top:2px}.more{margin-left:auto;color:#99a5a0;font-size:20px}.user-mini{border-top:1px solid var(--line);padding:13px 8px 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#dce6e2;background:white;color:#41625c}.quiet{background:transparent;border:0;color:var(--teal);padding:7px}.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:21px}.stat-card,.panel,.welcome-card{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 3px 12px #123b3610}.stat-card{padding:17px 18px;min-height:111px}.stat-top{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:11px}.stat-icon{width:29px;height:29px;border-radius:9px;background:var(--mint);display:grid;place-items:center;color:var(--teal);font-size:15px}.stat-num{font-size:27px;font-weight:700;letter-spacing:-.04em;margin-top:12px}.stat-note{font-size:10px;color:#96a39f;margin-top:2px}.welcome-card{background:linear-gradient(110deg,#e7f3f0,#f3f7f4);padding:24px 25px;display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:20px;overflow:hidden;position:relative}.welcome-card:after{content:'◉';position:absolute;right:27%;top:-62px;font-size:194px;color:#fff8}.welcome-card>div{position:relative;z-index:1}.welcome-card h2{font-size:18px;margin:0 0 7px}.welcome-card p{font-size:12px;color:#607974;margin:0;max-width:540px;line-height:1.7}.welcome-badge{background:#fff;color:var(--teal);border:1px solid #dceae5;padding:11px 14px;border-radius:11px;font-size:11px;white-space:nowrap;z-index:1}.two-col{display:grid;grid-template-columns:1.35fr 1fr;gap:16px}.panel{padding:19px}.panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:17px}.panel h3{font-size:13px;margin:0}.panel-head small{font-size:10px;color:#99a6a2}.empty{min-height:150px;border:1px dashed #dce6e1;border-radius:10px;display:flex;align-items:center;justify-content:center;flex-direction:column;text-align:center;padding:20px;color:var(--muted)}.empty-icon{width:38px;height:38px;border-radius:12px;background:#f0f6f3;color:#8aaba3;display:grid;place-items:center;font-size:18px;margin-bottom:10px}.empty b{font-size:12px;color:#48635d;margin-bottom:5px}.empty p{font-size:11px;margin:0;max-width:280px;line-height:1.6}.activity-list{display:grid;gap:13px}.activity{display:flex;gap:11px;align-items:center}.activity-icon{width:31px;height:31px;background:#eef5f2;color:var(--teal);border-radius:9px;display:grid;place-items:center}.activity b{font-size:11px;display:block}.activity small{color:var(--muted);font-size:10px}.table-tools{display:flex;gap:9px;align-items:center;margin:15px 0}.search{border:1px solid var(--line);background:#fff;border-radius:9px;padding:10px 12px;min-width:230px;font:inherit;font-size:12px;outline-color:#82b8ad}.filter{border:1px solid var(--line);background:#fff;color:#536a64;border-radius:9px;padding:9px 11px;font:12px inherit}.table-wrap{overflow:auto;background:#fff;border:1px solid var(--line);border-radius:12px}.data-table{width:100%;border-collapse:collapse;min-width:670px}.data-table th{text-align:left;color:#8b9994;background:#fbfcfb;font-size:10px;letter-spacing:.04em;font-weight:600;padding:12px 15px;border-bottom:1px solid var(--line)}.data-table td{font-size:11px;color:#536a64;padding:13px 15px;border-bottom:1px solid #edf1ef}.data-table tr:last-child td{border:0}.tag{padding:4px 8px;border-radius:14px;background:#eff4f2;color:#657a74;font-size:10px}.tag.green{background:#e9f4ee;color:#44825e}.tag.amber{background:#fbf3e3;color:#a27832}.tag.blue{background:#ebf1f8;color:#587aa2}.filter-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}.chip{border:1px solid var(--line);color:#657873;background:#fff;padding:7px 11px;border-radius:20px;font-size:10px}.chip.active{color:var(--teal);border-color:#9ecbc1;background:#edf7f3}.class-banner{display:flex;align-items:center;gap:14px;background:white;border:1px solid var(--line);border-radius:12px;padding:16px;margin-bottom:11px}.class-icon{width:39px;height:39px;display:grid;place-items:center;background:#edf5f2;border-radius:11px;color:var(--teal);font-size:18px}.class-banner b{font-size:12px}.class-banner small{display:block;color:var(--muted);font-size:10px;margin-top:4px}.class-banner button{margin-left:auto}.notice{border:1px solid #efe4cb;background:#fff9ed;border-radius:10px;color:#866d3c;padding:12px 14px;font-size:11px;line-height:1.6;margin-top:16px}.role-select{display:flex;align-items:center;gap:7px;font-size:10px;color:var(--muted)}.role-select select{border:1px solid var(--line);background:#fff;border-radius:8px;padding:7px;color:var(--ink);font:11px inherit}.modal-backdrop{position:fixed;inset:0;background:#10262377;z-index:10;display:grid;place-items:center;padding:20px}.modal{background:#fff;width:min(480px,100%);border-radius:16px;padding:22px;box-shadow:var(--shadow)}.modal h2{font-size:17px;margin:0 0 8px}.modal p{font-size:12px;line-height:1.65;color:var(--muted)}.modal-actions{display:flex;justify-content:flex-end;gap:9px;margin-top:19px}.toast{position:fixed;bottom:22px;right:22px;padding:11px 16px;background:#173b3a;color:white;border-radius:9px;font-size:11px;box-shadow:var(--shadow);opacity:0;transform:translateY(8px);transition:.2s;pointer-events:none;z-index:15}.toast.show{opacity:1;transform:none}.mobile-menu{display:none}footer{border-top:1px solid var(--line);padding:14px 38px;color:#9aa7a2;font-size:10px}footer span{padding:0 6px}.skeleton-line{height:10px;background:#edf2ef;border-radius:8px;width:40%;margin:4px 0}.quiz-card{padding:16px;border:1px solid var(--line);border-radius:11px;background:#fff;display:flex;align-items:center;gap:14px}.quiz-card+.quiz-card{margin-top:9px}.quiz-card .class-icon{flex:none}.quiz-card p{margin:4px 0 0;color:var(--muted);font-size:10px}.quiz-card button{margin-left:auto}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.feature{padding:17px;border:1px solid var(--line);background:#fff;border-radius:12px}.feature-icon{font-size:18px;color:var(--teal);margin-bottom:13px}.feature b{display:block;font-size:12px}.feature p{color:var(--muted);font-size:10px;line-height:1.6;margin:7px 0 0}
@media(max-width:950px){.sidebar{width:215px}.main{margin-left:215px}.content{padding:28px 24px}.topbar{padding:0 24px}.stat-grid{grid-template-columns:repeat(2,1fr)}.two-col{grid-template-columns:1fr}.feature-grid{grid-template-columns:1fr 1fr}}@media(max-width:650px){.sidebar{transform:translateX(-100%);transition:.22s;width:260px;box-shadow:var(--shadow)}.sidebar.open{transform:none}.main{margin:0}.topbar{height:56px;padding:0 15px}.mobile-menu{display:block;border:0;background:none;font-size:18px;color:var(--ink);margin-right:10px}.crumb{margin-right:auto}.top-actions{gap:9px}.content{padding:23px 15px}.page-head{align-items:flex-start;flex-direction:column;margin-bottom:19px}.page-head h1{font-size:23px}.stat-grid{gap:9px}.stat-card{padding:13px;min-height:98px}.stat-num{font-size:23px}.welcome-card{align-items:flex-start;flex-direction:column;padding:20px}.welcome-badge{white-space:normal}.feature-grid{grid-template-columns:1fr}.table-tools{flex-wrap:wrap}.search{width:100%}footer{padding:13px 15px}.role-select{margin-top:4px}}
.quiz-demo{background:#101412;color:#f4f6f4;border-radius:16px;padding:22px;margin-top:16px}.quiz-progress{height:7px;background:#343a37;border-radius:9px;margin:13px 0 18px;overflow:hidden}.quiz-progress span{display:block;height:100%;background:#71b99c}.quiz-work{display:grid;grid-template-columns:1fr 1fr;gap:18px}.quiz-image{min-height:330px;border-radius:13px;background:linear-gradient(135deg,#d7d0bf,#eee6d4 45%,#c9bdaf);display:grid;place-items:center;color:#65736c;font-size:12px}.quiz-step h2{font-size:19px}.quiz-options{display:grid;grid-template-columns:1fr 1fr;gap:8px}.quiz-option{border:1px solid #454b47;background:#171b19;color:#eef1ef;padding:12px;border-radius:9px;text-align:left;cursor:pointer}.quiz-option.selected{border-color:#70b99b;background:#1e352b}.quiz-option.none{grid-column:1/-1;border-style:dashed}.quiz-foot{display:flex;justify-content:space-between;align-items:center;margin-top:16px}.quiz-foot button:disabled{opacity:.4}.quiz-note{font-size:11px;color:#b3beb8}.@media(max-width:700px){.quiz-work{grid-template-columns:1fr}.quiz-image{min-height:220px}}
.menu-section{font-size:9px;color:#9aa8a3;letter-spacing:.12em;font-weight:700;padding:16px 12px 4px}.summary-row{display:flex;gap:10px;flex-wrap:wrap}.summary-box{padding:12px 15px;background:#f5f8f6;border-radius:9px;min-width:130px}.summary-box b{display:block;font-size:17px}.summary-box small{font-size:10px;color:var(--muted)}.builder-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.builder-field{display:grid;gap:6px;margin:12px 0}.builder-field label{font-size:11px;font-weight:600}.builder-field input,.builder-field select{padding:10px;border:1px solid var(--line);border-radius:8px;font:inherit;font-size:12px;background:#fff}.roster{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--line);font-size:11px}.roster:last-child{border:0}.student-quiz-row{display:grid;grid-template-columns:1fr auto;align-items:center;gap:10px;padding:14px;border-bottom:1px solid var(--line)}.student-quiz-row:last-child{border:0}.student-quiz-row small{display:block;color:var(--muted);margin-top:4px;font-size:10px}.danger{color:#a34d48}.question-jump{min-width:120px}
.feature-add-row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.feature-add-row input{flex:1;min-width:180px}
.manual-question-list{display:grid;gap:8px;margin-top:12px}.manual-question{display:grid;grid-template-columns:70px 1fr auto;gap:10px;align-items:center;padding:10px 12px;border:1px solid var(--line);border-radius:9px;background:#fff;font-size:11px}.manual-question>div{display:flex;gap:4px}.manual-question button:disabled{opacity:.4;cursor:not-allowed}@media(max-width:700px){.manual-question{grid-template-columns:1fr auto}.manual-question span{grid-column:1/-1;grid-row:2}.manual-question>div{grid-column:2;grid-row:1}}
.build-mode-choice{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.mode-choice{display:flex!important;align-items:flex-start;gap:9px;padding:12px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer}.mode-choice.selected{border-color:var(--teal,#18796f);background:#f0f8f6}.mode-choice input{margin-top:3px}.mode-choice span{display:grid;gap:4px}.mode-choice small{color:var(--muted);font-weight:400}@media(max-width:700px){.build-mode-choice{grid-template-columns:1fr}}
.manual-filter-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:10px 0}.manual-filter-grid label{display:grid;gap:6px;font-size:11px;font-weight:600}.manual-filter-grid select{padding:10px;border:1px solid var(--line);border-radius:8px;background:#fff;font:inherit;font-size:12px}.search-results{display:grid;gap:8px;margin-top:12px}.manual-image-row{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px;border:1px solid var(--line);border-radius:9px;background:#fff;font-size:11px}.manual-image-row small{display:block;color:var(--muted);margin-top:4px}.manual-image-row button:disabled{opacity:.5;cursor:not-allowed}@media(max-width:850px){.manual-filter-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:520px){.manual-filter-grid{grid-template-columns:1fr}.manual-image-row{align-items:flex-start;flex-direction:column}}
.series-multi-filter{display:grid;gap:7px;margin:12px 0}.series-multi-filter>b{font-size:11px}
.manual-image-row{justify-content:flex-start}.manual-image-meta{flex:1}.cell-image{display:grid;place-items:center;flex:none;object-fit:cover;background:#f0f5f3;border:1px solid var(--line);border-radius:8px}.cell-image.thumb,.cell-image-placeholder.thumb{width:96px;height:78px}.cell-image-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;color:var(--muted);text-align:center}.cell-image-placeholder span{font-size:28px;color:#72a99a}.cell-image-placeholder small{font-size:9px}.manual-question .cell-image.thumb,.manual-question .cell-image-placeholder.thumb{width:72px;height:58px}.manual-question{grid-template-columns:72px 56px 1fr auto}@media(max-width:700px){.manual-question{grid-template-columns:60px 1fr auto}.manual-question>span{grid-column:2/-1;grid-row:2}.manual-question .cell-image.thumb,.manual-question .cell-image-placeholder.thumb{grid-row:1/3;width:58px;height:52px}.manual-question>div{grid-column:3;grid-row:1}}
.class-sample-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:14px 0}.class-sample-card{cursor:pointer;padding:17px;border:1px solid var(--line);border-radius:13px;background:#fff}.class-sample-card.selected{border-color:#9ecbc1;box-shadow:0 0 0 2px #edf7f3}.class-card-top{display:flex;justify-content:space-between;align-items:center}.class-sample-card h2{font-size:15px;margin:13px 0 5px}.class-sample-card p{margin:0;color:var(--muted);font-size:11px}.class-sample-stats{display:flex;gap:30px;margin:15px 0}.class-sample-stats span{display:grid;gap:2px}.class-sample-stats b{font-size:20px}.class-sample-stats small{font-size:10px;color:var(--muted)}.class-roster-panel{margin-top:14px}.class-roster-panel .panel-head{display:flex;justify-content:space-between;align-items:center}.class-roster-panel .panel-head h3{margin:0 0 4px}.class-roster-panel .panel-head small{color:var(--muted)}.assigned-quiz-strip{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:13px 0;border-bottom:1px solid var(--line);font-size:11px}.assigned-quiz-strip b{margin-right:6px}@media(max-width:700px){.class-sample-grid{grid-template-columns:1fr}.class-roster-panel .panel-head{align-items:flex-start;gap:8px;flex-direction:column}}
.random-filter-grid{display:grid;grid-template-columns:minmax(0,1fr);align-items:start;gap:14px;margin:10px 0}.random-filter-grid>label{display:grid;width:min(640px,100%);align-content:start;gap:8px;font-size:11px;font-weight:600}.random-filter-grid>label select{width:100%;min-height:42px;padding:9px 12px;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--ink);font:inherit;font-size:12px}.random-filter-grid .series-multi-filter{margin:0;align-content:start}.random-filter-grid .series-multi-filter .filter-row{margin:0}@media(max-width:700px){.random-filter-grid{grid-template-columns:1fr;gap:10px}}
.overview-stats{grid-template-columns:repeat(3,minmax(0,1fr))}
.creator-avatar{display:inline-grid;place-items:center;width:24px;height:24px;margin-right:6px;border-radius:50%;background:#e5f2ef;color:var(--teal);font-size:11px;font-weight:700;vertical-align:middle}
.quiz-management-table th{white-space:nowrap}.quiz-management-table td{vertical-align:middle}.quiz-edit-button{white-space:nowrap}.editor-field{display:grid;gap:7px;margin:12px 0;font-size:12px;font-weight:600}.editor-field input{width:100%;padding:10px;border:1px solid var(--line);border-radius:8px;font:inherit;font-weight:400}.editor-toggle{display:flex;gap:9px;align-items:center;margin:15px 0;font-size:12px}
.dataset-sample-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:14px 0}.dataset-sample-card{padding:15px 17px;border:1px solid var(--line);border-radius:12px;background:#fff}.dataset-card-top{display:flex;justify-content:space-between;align-items:center}.dataset-sample-card h3{font-size:13px;margin:11px 0 5px}.dataset-sample-card p,.dataset-sample-card small{font-size:10px;color:var(--muted);margin:0}.library-sample-table td{vertical-align:middle}.library-sample-table code{font-size:9px;white-space:nowrap;color:#657873}.library-sample-table .cell-image-placeholder{width:70px;height:58px}@media(max-width:700px){.dataset-sample-grid{grid-template-columns:1fr}}
.dataset-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.dataset-actions .secondary{padding:7px 10px;font-size:11px}
.library-search-row{margin:14px 0 10px}.library-search-row .search{width:min(520px,100%);padding:10px 13px;border:1px solid var(--line);border-radius:9px;background:#fff;font:inherit;font-size:12px}.library-filter-row{display:grid;grid-template-columns:repeat(5,minmax(125px,1fr));gap:9px;margin:10px 0 12px}.library-filter-row label{display:grid;gap:5px;font-size:10px;font-weight:600;color:var(--muted)}.library-filter-row select{min-width:0;width:100%;padding:9px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);font:inherit;font-size:11px}.library-result-count{font-size:10px;color:var(--muted);margin:8px 0}.library-sample-table th{white-space:nowrap}.library-sample-table td{vertical-align:middle}.library-sample-table code{font-size:9px;white-space:nowrap;color:#657873}.library-sample-table .cell-image-placeholder{width:70px;height:58px}@media(max-width:900px){.library-filter-row{grid-template-columns:repeat(3,minmax(120px,1fr))}}@media(max-width:600px){.library-filter-row{grid-template-columns:repeat(2,minmax(0,1fr))}}
.library-editor{width:min(760px,100%);max-height:90vh;overflow:auto}.editor-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}.editor-grid label{display:grid;gap:6px;font-size:11px;font-weight:600}.editor-grid input,.editor-grid select{min-width:0;width:100%;padding:10px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);font:inherit;font-size:12px;font-weight:400}@media(max-width:600px){.editor-grid{grid-template-columns:1fr}}
.invite-link-preview{display:grid;gap:5px;padding:12px;border:1px dashed var(--line);border-radius:9px;background:#f8faf9;font-size:11px}.invite-link-preview small{color:var(--muted)}
.roster-quiz-filter{display:flex;justify-content:space-between;align-items:end;gap:12px;padding:14px 0;border-bottom:1px solid var(--line)}.roster-quiz-filter label{display:grid;gap:6px;font-size:11px;font-weight:600}.roster-quiz-filter select{min-width:240px;padding:9px 12px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);font:inherit;font-size:12px}.roster-quiz-filter small{font-size:10px;color:var(--muted)}@media(max-width:600px){.roster-quiz-filter{align-items:flex-start;flex-direction:column}.roster-quiz-filter select{min-width:0;width:100%}}
.sort-header{padding:0;border:0;background:transparent;color:inherit;font:inherit;font-weight:700;cursor:pointer}.sort-header:hover{color:var(--teal)}
.manual-question-meta{display:grid;gap:4px;min-width:0}.manual-question-meta span{overflow-wrap:anywhere}.manual-question-meta small{font-size:10px;color:var(--muted)}@media(max-width:700px){.manual-question-meta{grid-column:2/-1;grid-row:2}.manual-question>div:not(.manual-question-meta){grid-column:3;grid-row:1}}
.manual-question-meta{display:block;color:var(--muted);font-size:inherit;line-height:1.5}.manual-question-meta span{font:inherit;color:inherit;overflow-wrap:anywhere}
.cell-taxonomy{color:var(--ink);font:inherit}.cell-feature-list{color:var(--muted);font:inherit}
.manual-question-meta .cell-taxonomy,.manual-image-meta .cell-taxonomy{color:#202c2a;font:inherit}
.cell-code{color:#202c2a;font-weight:700}
.manual-question [data-move-cell]{cursor:grab;touch-action:none}.manual-question [data-move-cell]:active{cursor:grabbing}.manual-question.dragging{opacity:.5}.manual-question.drag-over{border-color:var(--teal);background:#f0f8f6}
.quiz-code{font-size:10px;font-weight:700;color:var(--ink);white-space:nowrap}
.quiz-modal-actions{flex-wrap:wrap}.quiz-modal-actions .danger{color:#a34d48}.danger-button{background:#a34d48;border-color:#a34d48}.quiz-management-table td:last-child{white-space:nowrap}.quiz-management-table td:last-child button+button{margin-left:5px}

/* Responsive class cards: 3 columns on desktop, 2 on tablet, 1 on phones. */
.class-sample-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
@media(max-width:1000px){.class-sample-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:600px){.class-sample-grid{grid-template-columns:1fr}}

/* Dataset cards adapt to the available content width, including the sidebar. */
.dataset-sample-grid{grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr))}
.dataset-sample-card{min-width:0}

.report-stats{grid-template-columns:repeat(3,minmax(0,1fr));margin:0 0 14px}
.report-footer{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:14px;padding-top:13px;border-top:1px solid var(--line)}
.report-footer small{color:var(--muted);line-height:1.6}
.attempt-history{margin-top:20px}
.attempt-history h3{font-size:13px;margin:0 0 10px}
@media(max-width:850px){.report-stats{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:600px){.report-stats{grid-template-columns:1fr}.report-footer{align-items:flex-start;flex-direction:column}.report-footer button{width:100%}.table-tools{align-items:stretch;flex-direction:column}.table-tools label select,.table-tools>.secondary{width:100%}}

.reset-modal{width:min(520px,100%);padding:25px;border-radius:16px}
.reset-modal h2{font-size:20px;letter-spacing:-.02em;margin:0 0 13px}
.reset-modal .reset-intro{margin:0 0 18px;padding:12px 14px;border:1px solid #dfece7;border-left:3px solid var(--teal);border-radius:9px;background:#f5f9f7;color:#607671;font-size:12px;line-height:1.65}
.reset-modal .editor-field{display:grid;gap:7px;margin:13px 0;color:#536a64;font-size:11px;font-weight:700}
.reset-modal .editor-field select{appearance:none;min-width:0;width:100%;min-height:42px;padding:10px 38px 10px 12px;border:1px solid #dce6e2;border-radius:9px;background-color:#fff;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23647470' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 13px center;color:var(--ink);font:inherit;font-size:13px;font-weight:500;cursor:pointer}
.reset-modal .editor-field select:focus{outline:3px solid #d9eee8;border-color:#73b5a8}
.reset-modal .modal-actions{margin-top:22px;gap:10px}
.reset-modal .modal-actions button{min-height:42px;padding-inline:16px}
@media(max-width:520px){.reset-modal{padding:20px}.reset-modal .modal-actions{flex-direction:column-reverse}.reset-modal .modal-actions button{width:100%}}

.class-panel-actions{display:flex;align-items:center;justify-content:flex-end;gap:8px;flex-wrap:wrap}
@media(max-width:600px){.class-panel-actions{width:100%;justify-content:stretch}.class-panel-actions button{flex:1}}

.report-quiz-details{min-width:150px}
.report-quiz-details summary{color:var(--teal);font-weight:700;cursor:pointer;white-space:nowrap}
.report-quiz-details ul{min-width:230px;margin:8px 0 0;padding:0;list-style:none}
.report-quiz-details li{display:grid;gap:3px;padding:7px 0;border-top:1px solid var(--line);white-space:normal}
.report-quiz-details li b{color:var(--ink);font-size:11px}
.report-quiz-details li span{color:var(--muted);font-size:10px}

.quiz-assignment-button{max-width:230px;white-space:normal;text-align:left;line-height:1.45}
.quiz-management-table{min-width:1120px}
.quiz-assignment-backdrop .editor-field select{min-width:0;width:100%;min-height:42px;padding:10px;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--ink);font:inherit;font-size:12px}

.class-quiz-board{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:13px;margin:14px 0 4px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.class-quiz-lane{min-width:0;padding:15px;border:1px solid var(--line);border-radius:12px;background:#fbfdfc}
.class-quiz-lane.open-lane{background:#f6faf8}
.class-quiz-lane-head{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.class-lane-icon{flex:none;width:34px;height:34px;display:grid;place-items:center;border-radius:10px;background:#e5f2ef;color:var(--teal);font-size:11px;font-weight:700}
.class-quiz-lane-head h4{margin:0;color:var(--ink);font-size:12px}
.class-quiz-lane-head small{display:block;margin-top:3px;color:var(--muted);font-size:10px;line-height:1.45}
.quiz-layer{position:relative;display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:10px;padding:11px 10px;margin-top:8px;border:1px solid #dce8e3;border-radius:10px;background:#fff}
.quiz-layer-number{padding:5px 7px;border-radius:8px;background:#e9f4f1;color:#187d75;font-size:10px;font-weight:700;white-space:nowrap}
.quiz-layer b,.quiz-open-item b{display:block;color:var(--ink);font-size:11px}
.quiz-layer small,.quiz-open-item small{display:block;margin-top:3px;color:var(--muted);font-size:9px}
.quiz-layer-state{color:#71847e;font-size:9px;text-align:right}
.quiz-open-item{display:flex;align-items:center;gap:10px;padding:11px 10px;margin-top:8px;border:1px solid #dce8e3;border-radius:10px;background:#fff}
.quiz-open-item>div{flex:1;min-width:0}
.quiz-open-icon{width:28px;height:28px;display:grid;place-items:center;border-radius:8px;background:#e9f4ee;color:#4a8b68}
.quiz-lane-empty{margin:0;padding:12px;border:1px dashed #dce6e2;border-radius:9px;color:var(--muted);font-size:10px;text-align:center}
.quiz-assignment-backdrop [hidden]{display:none!important}
@media(max-width:850px){.class-quiz-board{grid-template-columns:1fr}}
@media(max-width:520px){.quiz-layer{grid-template-columns:auto minmax(0,1fr)}.quiz-layer-state{grid-column:2;text-align:left}.quiz-open-item{align-items:flex-start;flex-wrap:wrap}.quiz-open-item .tag{margin-left:38px}}

.quiz-assignment-backdrop .modal{max-height:90vh;overflow:auto}
.assignment-class-field{min-width:0;margin:13px 0;padding:12px;border:1px solid var(--line);border-radius:11px}
.assignment-class-field legend{padding:0 5px;color:#536a64;font-size:11px;font-weight:700}
.assignment-class-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}
.assignment-class-option{display:flex;align-items:center;gap:8px;min-width:0;padding:9px;border:1px solid #e5ece8;border-radius:8px;background:#fbfdfc;color:var(--ink);font-size:11px;cursor:pointer}
.assignment-class-option:has(input:checked){border-color:#8bc2b6;background:#eef7f4;color:#176f68}
.assignment-class-option input{flex:none;accent-color:var(--teal)}
.assignment-class-option span{overflow-wrap:anywhere}
@media(max-width:520px){.assignment-class-options{grid-template-columns:1fr}}

.quiz-level-card{margin-top:9px;padding:11px;border:1px solid #dce8e3;border-radius:11px;background:#fff}
.quiz-level-heading,.student-level-heading{display:flex;align-items:center;justify-content:space-between;gap:10px}
.quiz-level-heading small,.student-level-heading small{color:var(--muted);font-size:9px;text-align:right}
.quiz-level-items{display:grid;gap:7px;margin-top:9px}
.quiz-level-item{padding:9px 10px;border-radius:8px;background:#f8fbf9}
.quiz-level-item b{display:block;color:var(--ink);font-size:11px}
.quiz-level-item small{display:block;margin-top:3px;color:var(--muted);font-size:9px}
.student-level-group{margin-top:11px;padding:12px;border:1px solid var(--line);border-radius:11px;background:#fbfdfc}
.student-level-heading{padding-bottom:9px;border-bottom:1px solid var(--line)}
.student-sequence-card{display:flex;align-items:center;gap:10px;margin-top:8px;padding:10px;border:1px solid #e4ece8;border-radius:9px;background:#fff}
.student-sequence-card.locked{background:#f7f8f7;color:#929e99}
.student-sequence-copy{flex:1;min-width:0}
.student-sequence-copy b{display:block;color:var(--ink);font-size:11px}
.student-sequence-copy small{display:block;margin-top:3px;color:var(--muted);font-size:9px}
.student-sequence-card button,.student-open-card button{flex:none}
.student-open-card{display:flex;align-items:center;gap:10px;margin-top:8px;padding:11px;border:1px solid #e4ece8;border-radius:9px;background:#fff}
.student-section-heading{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.student-section-heading h2{margin:0;color:var(--ink);font-size:13px}
.student-section-heading p{margin:3px 0 0;color:var(--muted);font-size:10px}
@media(max-width:520px){.quiz-level-heading,.student-level-heading{align-items:flex-start;flex-direction:column}.student-sequence-card,.student-open-card{align-items:flex-start;flex-wrap:wrap}.student-sequence-card .student-sequence-copy,.student-open-card .student-sequence-copy{flex-basis:calc(100% - 8px)}.student-sequence-card button,.student-open-card button{margin-left:auto}}

/* Class quiz assignment and drag-to-organize affordances */
.add-class-quiz-icon{width:40px;min-width:40px;height:40px;padding:0;font-size:21px;line-height:1}
.add-class-quiz-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}
.add-class-quiz-list .assignment-class-option{align-items:flex-start}
.add-class-quiz-list .assignment-class-option span{display:block}
.add-class-quiz-list .assignment-class-option small{display:block;margin-top:3px;color:var(--muted);font-size:9px}
.quiz-level-item[draggable=true],.quiz-open-item[draggable=true]{cursor:grab;user-select:none}
.quiz-level-item[draggable=true]:active,.quiz-open-item[draggable=true]:active{cursor:grabbing}
.quiz-level-item.dragging-quiz,.quiz-open-item.dragging-quiz{opacity:.45}
.quiz-drag-handle{flex:none;color:#8ba39c;font-size:17px;cursor:grab;user-select:none}
.quiz-level-item{display:flex;align-items:center;gap:9px}
.quiz-level-item>div{min-width:0;flex:1}
.quiz-drop-target.drag-over{border-color:var(--teal);background:#edf7f3;box-shadow:inset 0 0 0 2px #b8ddd4}
.quiz-new-level-drop{margin-top:10px;padding:10px;border:1px dashed #97c8bc;border-radius:9px;color:var(--teal);font-size:10px;text-align:center}
@media(max-width:520px){.add-class-quiz-list{grid-template-columns:1fr}.class-panel-actions .add-class-quiz-icon{width:38px;min-width:38px;height:38px}}

/* Gallery dashboard theme: purple accents, neutral surfaces, crisp icon treatment */
.brand-mark,.class-icon,.stat-icon,.activity-icon,.feature-icon,.nav-item.active .nav-icon{background:#f0ebfc;color:var(--teal)}
.nav-item.active{background:#f0ebfc;color:var(--teal-dark)}
.primary{background:var(--teal);border-color:var(--teal);box-shadow:0 6px 16px rgba(135,95,242,.2)}
.primary:hover{background:var(--teal-dark)}
.mode-pill{background:#f4f0fd;color:#7046dc;border-color:#e8defc}
.mode-pill i,.connection .dot{background:var(--teal)}
.stat-card,.panel,.welcome-card,.feature,.class-sample-card{box-shadow:0 8px 24px rgba(32,27,43,.035)}
.nav-item span{display:inline-grid;place-items:center;border-radius:8px;width:26px;height:26px;background:#f4f3f6;color:#777381;font-size:15px}
.nav-item.active span{background:#e5dcfb;color:var(--teal-dark)}
.icon-btn{color:var(--teal-dark)}
.tag.green{background:#f0ebfc;color:#7046dc}
@media(prefers-reduced-motion:no-preference){.nav-item,.primary,.secondary,.stat-card,.panel{transition:background-color .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease}}

/* Dark analytics theme, scoped to the Gallery Theme copy */
:root{color-scheme:dark;--ink:#f0eef4;--muted:#92909b;--teal:#b38af5;--teal-dark:#c3a3ff;--mint:#30293b;--paper:#111113;--white:#1b1b1e;--line:#303034;--amber:#eadb6c;--shadow:0 18px 50px rgba(0,0,0,.34)}
body,.sidebar,.topbar,.panel,.stat-card,.welcome-card,.feature,.class-sample-card,.modal,.quiz-card,.quiz-level-card,.quiz-open-item,.student-level-group,.student-sequence-card,.student-open-card{background:#111113;color:var(--ink)}
.sidebar{background:#0b0b0d;border-color:#29292d}.topbar{background:rgba(17,17,19,.94);border-color:#2c2c30}.content{color:var(--ink)}
.page-head h1,.panel h2,.panel h3,.welcome-card h2,.class-sample-card h2,.stat-num,.brand b{color:#f3f1f7}
.nav-item,.crumb,.crumb b,.subhead,.class-sample-card p,.stat-note,.stat-top{color:#96939e}.nav-item:hover{background:#211d27;color:#fff}.nav-item.active{background:#2b2434;color:#c9aaff}
.nav-item span,.nav-item .nav-icon{background:#1d1d21;color:#b38af5}.nav-item.active span,.nav-item.active .nav-icon{background:#3a2e4b;color:#c7a6ff}
.brand-mark,.class-icon,.stat-icon,.activity-icon,.feature-icon{background:#30293b;color:#c3a3ff}.brand,.user-mini{color:var(--ink)}
.connection,.user-mini,.topbar,.table-wrap,.data-table th,.data-table td,.quiz-level-card,.quiz-open-item,.quiz-layer,.student-sequence-card,.student-open-card{border-color:#303034}
.data-table,.data-table th,.data-table td{color:#dedbe4}.data-table th{background:#19191c;color:#a5a2ad}.data-table tr:hover{background:#1c1b20}
input,select,textarea,.builder-field input,.builder-field select,.editor-field input,.editor-field select,.search{background:#19191c!important;color:#eeeaf3!important;border-color:#3a393f!important}input::placeholder,textarea::placeholder{color:#77747e}
.primary{background:#875ff2;border-color:#875ff2;color:#fff;box-shadow:0 6px 18px rgba(135,95,242,.22)}.primary:hover{background:#7046dc}.secondary,.quiet{background:#1d1d21;border-color:#3a393f;color:#e2deea}.secondary:hover,.quiet:hover{background:#29252f}
.mode-pill{background:#282132;color:#c8a8ff;border-color:#40344e}.mode-pill i,.connection .dot{background:#b38af5}.tag.green,.tag.blue,.quiz-layer-number{background:#30293b;color:#c5a2ff}.tag.amber{background:#37331e;color:#e9dc73}
.notice{background:#252116;border-color:#494024;color:#d5c488}.empty,.quiz-lane-empty,.summary-box,.manual-question,.mode-choice{background:#19191c;color:var(--ink);border-color:#36353b}.mode-choice.selected{background:#282132;border-color:#875ff2}.manual-question-list,.roster,.student-quiz-row{border-color:#303034}
.modal-backdrop{background:rgba(0,0,0,.76)}.modal{border:1px solid #333238}.toast{background:#30293b;color:#f1eaff}.switch-role{background:#1b1b1e;border-color:#38373e;color:#c6c2cd}.avatar{background:#30293b;color:#c9aaff}
.quiz-drop-target.drag-over{border-color:#b38af5;background:#292232;box-shadow:inset 0 0 0 2px #574176}.quiz-new-level-drop{border-color:#7053a0;color:#c3a3ff}
.assignment-class-option{background:#19191c;border-color:#34333a;color:#e2deea}.assignment-class-option:has(input:checked){background:#2b2434;border-color:#875ff2;color:#d3bbff}
footer{border-color:#2c2c30;color:#77747e}

/* Class icon: learner group */
.class-icon svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}

/* Finish dark surfaces for remaining white UI components */
:root{--white:#1b1b1e;--paper:#111113;--line:#303034}
.secondary,.quiet,.switch-role,.builder-field input,.builder-field select,.editor-field input,.editor-field select,.editor-field textarea,.search,.table-tools input,.table-tools select,.filter-row select,.filter-row input,.roster-quiz-filter select,.assignment-class-option,.mode-choice,.summary-box,.manual-question,.quiz-card,.feature,.quiz-level-item,.class-banner,.invite-link-preview,.stat-card,.panel,.welcome-card,.class-sample-card{background-color:#1b1b1e;color:#e7e4ec;border-color:#343339}
.data-table th{background:#19191c;color:#aaa7b1}.data-table td{background:#151517;color:#dedbe4}.data-table tr:hover td{background:#202024}
.empty,.quiz-lane-empty{background:#171719;color:#a4a1aa;border-color:#38373d}.notice{background:#252116;color:#d5c488;border-color:#494024}
.modal,.quiz-editor-backdrop .modal,.reset-modal-backdrop .modal,.quiz-assignment-backdrop .modal{background:#1b1b1e;color:#eeeaf3;border-color:#38373e}

/* Dataset cards were using a hard-coded light surface */
.dataset-sample-card{background:#1b1b1e!important;border-color:#343339!important;color:#eeeaf3}
.dataset-sample-card h3{color:#f3f1f7!important}
.dataset-sample-card p,.dataset-sample-card small{color:#a4a1aa!important}

/* Contrast repairs for locked and disabled student quiz rows */
.student-sequence-card,.student-sequence-card.locked,.student-open-card,.quiz-level-item{background:#1b1b1e!important;border-color:#3a393f!important;color:#e7e4ec!important;opacity:1!important}
.student-sequence-card.locked .student-sequence-copy b,.student-sequence-card.locked .student-sequence-copy small{color:#b4b0bb!important}
.student-sequence-card button:disabled,.student-open-card button:disabled{background:#28272c!important;border-color:#44424a!important;color:#aaa6b1!important;opacity:1!important}
.student-sequence-card .quiz-layer-number,.student-open-card .quiz-layer-number{background:#30293b!important;color:#c9aaff!important}

.auth-pending .sidebar,.auth-pending .main{display:none!important}
.auth-gate{position:fixed;inset:0;z-index:30;display:grid;place-items:center;padding:20px;background:#111113;color:#f0eef4}
.auth-gate[hidden]{display:none}
.auth-card{width:min(420px,100%);display:grid;gap:14px;padding:30px;border:1px solid #343339;border-radius:18px;background:#1b1b1e;box-shadow:0 18px 50px #0008}
.auth-brand{font-size:12px;font-weight:800;letter-spacing:.12em;color:#c3a3ff}.auth-brand span{display:block;margin-top:4px;color:#92909b;font-weight:500;letter-spacing:0}
.auth-card h1{margin:7px 0 0;font-size:24px}.auth-card p{margin:0 0 4px;color:#aaa7b1;font-size:13px}
.auth-card label{display:grid;gap:6px;color:#d8d4df;font-size:12px}.auth-card input{padding:11px 12px;border:1px solid #3a393f;border-radius:9px;background:#141416;color:#f4f1f8;font:inherit}
.auth-card button{min-height:42px}.auth-error{min-height:18px;color:#f39b9b;font-size:12px}.auth-signout{font-size:11px}