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16px}.lesson-feedback.correct{color:#17623d;background:#dff3e7}.lesson-feedback.incorrect{background:var(--coral-soft);color:#a62d25}.lesson-feedback.pending{color:#745e11;background:#fff2c7}.lesson-feedback p,.lesson-solution p{margin:7px 0 0}.lesson-meta-form{border:1px solid var(--line);background:#fff;border-radius:18px;grid-template-columns:1fr 220px;gap:12px;padding:18px;display:grid}.lesson-meta-form label{gap:6px;display:grid}.lesson-meta-form span{color:var(--muted);font-size:11px;font-weight:800}.lesson-builder-grid{grid-template-columns:minmax(280px,.8fr) minmax(0,1.4fr);align-items:start;gap:18px;display:grid}.lesson-builder-grid>aside,.lesson-builder-grid>main{border:1px solid var(--line);background:#fff;border-radius:18px;padding:18px}.lesson-builder-grid h2{color:var(--ink);margin:0 0 14px;font-size:18px}.bank-filters{gap:8px;margin-bottom:12px;display:grid}.bank-list{gap:12px;max-height:680px;padding-right:5px;display:grid;overflow-y:auto}.bank-question-card{border:1px solid var(--line);color:var(--text);background:#fff;border-radius:14px;gap:10px;padding:14px;display:grid}.bank-question-card.selected{border:2px solid var(--ink);background:var(--mint-pale)}.bank-question-head{color:var(--coral);justify-content:space-between;gap:10px;font-size:11px;font-weight:900;display:flex}.bank-question-card p{color:var(--text);margin:0;font-size:14px;line-height:1.45}.bank-question-card ol{color:var(--muted);gap:4px;margin:0;padding-left:24px;font-size:12px;display:grid}.bank-question-card>button{width:100%}.bank-preview-images{grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;display:grid}.bank-preview-images img{object-fit:contain;border:1px solid var(--line);background:#fff;border-radius:8px;width:100%;height:90px}.task-number-picker{grid-template-columns:repeat(7,1fr);gap:6px;margin-bottom:12px;display:grid}.task-number-picker button{border:1px solid var(--line);height:36px;color:var(--ink);cursor:pointer;background:#fff;border-radius:9px;font-weight:900}.task-number-picker button.active{border-color:var(--ink);background:var(--ink);color:#fff}.bank-count{color:var(--muted);margin:0 0 8px;font-size:11px}.lesson-save-error{background:var(--coral-soft);border-radius:12px;margin:0;padding:12px 15px}.builder-head,.question-editor-head{justify-content:space-between;align-items:center;gap:9px;display:flex}.question-editor{border:1px solid var(--line);border-radius:14px;gap:10px;margin-top:12px;padding:14px;display:grid}.question-editor textarea{min-height:80px}.question-editor-head b{background:var(--ink);color:#fff;border-radius:8px;place-items:center;width:28px;height:28px;display:grid}.question-editor-head button{color:#a62d25;cursor:pointer;background:0 0;border:0}.question-order-actions{gap:6px;margin-left:auto;display:flex}.question-editor-head .question-order-actions button{border:1px solid var(--line);color:var(--ink);background:#fff;border-radius:9px;padding:7px 10px;font-weight:700}.question-editor-head .question-order-actions button:disabled{cursor:default;opacity:.35}.option-editor{gap:7px;display:grid}.option-editor label{grid-template-columns:auto 1fr;align-items:center;gap:8px;display:grid}.sequence-options{gap:8px}.sequence-option{border:1px solid var(--line);background:#fff;border-radius:12px;align-items:center;gap:12px;padding:12px 14px;display:flex}.lesson-import-actions{flex-wrap:wrap;justify-content:flex-end;gap:7px;display:flex}.lesson-file-button{cursor:pointer;align-items:center;display:inline-flex}.lesson-file-button input{display:none}.lesson-import-help{background:var(--paper);color:var(--muted);border-radius:12px;margin:12px 0;padding:12px 14px;font-size:12px}.lesson-import-help summary{color:var(--ink);cursor:pointer;font-weight:900}.lesson-import-help code{color:var(--ink)}.lesson-import-success{color:#17623d;background:#dff3e7;border-radius:11px;margin:10px 0;padding:10px 13px;font-weight:800}.question-duration{gap:6px;display:grid}.question-duration span{color:var(--muted);font-size:11px;font-weight:800}.live-question-top{justify-content:space-between;align-items:center;gap:12px;display:flex}.question-timer{background:var(--mint-pale);min-width:78px;color:var(--ink);text-align:center;font-variant-numeric:tabular-nums;border-radius:11px;padding:8px 12px}.question-timer.ending{color:#745e11;background:#fff2c7}.question-timer.expired{background:var(--coral-soft);color:#a62d25}.lesson-question-controls{border:1px solid var(--line);background:var(--mint-pale);border-radius:15px;flex-wrap:wrap;align-items:center;gap:10px;padding:14px 16px;display:flex}.lesson-question-controls strong{color:var(--ink);margin-right:auto}.lesson-question-controls select{min-width:180px}.danger-btn{color:#a62d25;cursor:pointer;background:#fff3f2;border:1px solid #e9aaa5;border-radius:11px;min-height:40px;padding:0 14px;font-weight:900}.lesson-matrix-wrap{border:1px solid var(--line);background:#fff;border-radius:16px;max-height:65vh;overflow:auto}.lesson-matrix{min-width:max-content;display:grid}.lesson-matrix>*{border-right:1px solid var(--line);border-bottom:1px solid var(--line);place-items:center;min-height:48px;padding:7px;display:grid}.lesson-matrix>button{background:var(--mint-pale);color:var(--ink);cursor:pointer;border-top:0;border-left:0;font-weight:900}.matrix-sticky{z-index:2;background:#fff;position:sticky;left:0;place-items:center start!important}.matrix-sticky small{color:var(--muted);margin-top:3px;font-size:9px;display:block}.lesson-matrix span.correct{color:#17623d;background:#dff3e7}.lesson-matrix span.wrong{background:var(--coral-soft);color:#a62d25}.lesson-matrix span.wrong-twice{color:#7d1711;background:#f3a8a2;font-weight:900;box-shadow:inset 0 0 0 2px #c94b42}.lesson-matrix span.corrected{background:linear-gradient(135deg,#f8d5d2 50%,#dff3e7 50%)}.lesson-matrix span.pending{color:#745e11;background:#fff2c7}.question-breakdown{z-index:20;background:#fff;width:min(620px,100%);height:100vh;padding:30px;position:fixed;top:0;right:0;overflow-y:auto;box-shadow:-20px 0 60px #164b472e}.question-breakdown>button{float:right;cursor:pointer;background:0 0;border:0;font-size:28px}.question-breakdown>div:not(.teacher-full-question){grid-template-columns:1fr 1fr;gap:10px;display:grid}.question-breakdown>div:not(.teacher-full-question)>span{background:var(--paper);border-radius:12px;padding:12px}.question-breakdown ul{padding:0;list-style:none}.question-breakdown>ul>li{border-bottom:1px solid var(--line);grid-template-columns:130px 1fr auto;gap:10px;padding:14px 0;display:grid}.teacher-full-question{clear:both;border:1px solid var(--line);background:var(--paper);border-radius:16px;margin:14px 0 18px;padding:16px}.teacher-full-question h2{margin-top:0;font-size:19px;line-height:1.45}.teacher-full-question ol{gap:8px;padding:0;list-style:none;display:grid}.teacher-full-question ol li{background:#fff;border-radius:10px;grid-template-columns:30px 1fr;align-items:center;gap:10px;padding:10px;display:grid}.teacher-full-question ol li>strong{background:var(--mint-pale);border-radius:8px;place-items:center;width:28px;height:28px;display:grid}.teacher-full-question ol li.correct-option{background:#edfaf2;outline:2px solid #83c9a1}.teacher-correct-answer{color:#17623d;background:#dff3e7;border-radius:10px;padding:11px}.teacher-explanation{color:var(--muted);line-height:1.45}.student-answer-value{min-width:0}.student-answer-value>span{overflow-wrap:anywhere;display:block}.answer-diagnosis{gap:5px;margin-top:8px;display:grid}.answer-diagnosis p{border-radius:8px;margin:0;padding:7px 9px;font-size:12px;line-height:1.35}.diagnosis-wrong{background:var(--coral-soft);color:#a62d25}.diagnosis-missing{color:#745e11;background:#fff2c7}.diagnosis-correct{color:#17623d;background:#dff3e7}.live-question-adder{border:2px solid var(--mint);background:#fff;border-radius:18px;gap:14px;padding:20px;display:grid}.live-question-adder h2{color:var(--ink);margin:0 0 4px}.live-question-adder p{color:var(--muted);margin:0}.live-adder-list{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:12px;max-height:560px;display:grid;overflow-y:auto}.review-page>h1{color:var(--ink)}.review-page article{border:1px solid var(--line);background:#fff;border-radius:18px;max-width:720px;padding:24px}.review-page blockquote{border-left:4px solid var(--coral);background:var(--paper);margin:18px 0;padding:18px;font-size:20px}.review-page textarea{width:100%;min-height:90px}.review-page article>div{justify-content:flex-end;gap:10px;margin-top:12px;display:flex}@media (max-width:840px){.test-grid,.quiz-layout{grid-template-columns:1fr}.navigator{position:static}.number-grid{grid-template-columns:repeat(10,1fr);max-height:180px}.dashboard-metrics{grid-template-columns:repeat(2,1fr)}.student-row{grid-template-columns:auto 1fr auto}.student-row>span:not(.student-avatar):not(.student-identity){display:none}.create-user-form{grid-template-columns:1fr 1fr}.lesson-builder-grid{grid-template-columns:1fr}}@media (max-width:600px){.app-shell{width:min(100% - 20px,1180px);padding-top:12px}.topbar{margin-bottom:12px}.brand-mark{width:34px;height:34px}.account-switch button{padding:7px 8px;font-size:10px}.hero{border-radius:20px;padding:27px 22px}.section-head{margin-top:30px;display:block}.section-head p{margin-top:7px}.test-section-head{align-items:flex-start}.test-section-head p{max-width:250px}.test-card,.quiz-main,.navigator{border-radius:18px}.quiz-header{padding:13px}.quiz-title strong{font-size:15px}.question-wrap{min-height:0;padding:18px 14px}.question-wrap h2{margin:18px 0}.selection-guide{align-items:flex-start;gap:8px}.elements-grid{grid-template-columns:repeat(5,1fr);gap:5px}.element-btn{border-radius:13px;min-height:78px}.element-index{top:6px;left:7px}.element-order{top:5px;right:5px}.matching-board{grid-template-columns:1fr;gap:28px;padding:18px 15px}.matching-board.stacked .matching-products{grid-template-columns:1fr}.matching-board.stacked .matching-reactions{padding-bottom:4px;overflow-x:auto}.matching-board.stacked .matching-reaction-row{min-width:620px}.ege-question .matching-question.task-9 .matching-reaction-row,.ege-question .matching-question.task-16 .matching-reaction-row{min-width:max-content}.matching-board{--matching-font-size:clamp(18px, 5.5vw, 23px)}.matching-column{gap:15px}.task-five-grid .matching-products{grid-template-columns:repeat(3,minmax(0,1fr))}.task-five-grid .matching-option-row{min-height:104px;padding:28px 8px 12px;font-size:clamp(14px,4.1vw,18px)}.ege-question .matching-board{--matching-font-size:clamp(16px, 4.5vw, 19px);grid-template-columns:1fr;gap:20px;padding:0}.ege-question .task-five-grid .matching-products{grid-template-columns:repeat(3,minmax(0,1fr))}.ege-question .task-five-grid .matching-option-row{min-height:92px;padding:26px 6px 10px;font-size:clamp(13px,3.8vw,17px)}.ege-question .elements-grid{grid-template-columns:repeat(5,minmax(0,1fr))}.ege-question .element-btn{min-height:70px}.ege-question .element-symbol{font-size:clamp(18px,6vw,26px)}.equation-block,.transformation-chain{padding:16px;font-size:20px}.transformation-chain .reaction-chain{justify-content:flex-start;min-width:max-content}.question-actions{flex-wrap:wrap}.question-actions>button{flex:1}.action-right{width:100%}.action-right button{flex:1}.number-grid{grid-template-columns:repeat(8,1fr)}.result-metrics{grid-template-columns:1fr}.result-actions{flex-direction:column}.mistake-bank-card{grid-template-columns:auto 1fr}.mistake-bank-card button{grid-column:1/-1;width:100%}.dashboard-hero{flex-direction:column;align-items:flex-start}.dashboard-home{width:100%}.dashboard-metrics{grid-template-columns:1fr 1fr;gap:8px}.dashboard-metrics>div{padding:14px}.topic-stat-row{grid-template-columns:auto 1fr auto;padding:13px}.topic-stat-row .ghost-btn{grid-column:1/-1;width:100%}.import-banner{flex-direction:column;align-items:stretch}.create-user-form,.lesson-work-head,.lesson-meta-form,.lesson-admin-list>button{grid-template-columns:1fr}}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}