[hidden]{display:none!important}
.quiz-draft-status{display:block;font-size:10px;color:var(--muted);margin-top:12px}
/* Giữ vùng câu hỏi gọn và nút tiếp tục trong tầm nhìn sau khi chấm. */
.shell:has(.study-question) .topbar{height:60px}
main.study-question{padding-top:16px;padding-bottom:115px}
.study-question>.page-title{max-width:780px;margin:0 auto 12px;gap:12px}
.study-question>.page-title h1{font-size:21px;line-height:1.3}
.study-question>.page-title p{display:none}
.study-question>.page-title .btn{padding:7px 12px;font-size:12px;min-height:38px}
.study-question .plan-in-quiz{padding:9px 12px;margin-bottom:10px;box-shadow:none;border-radius:10px}
.study-question .plan-in-quiz .plan-progress{display:grid;grid-template-columns:minmax(0,1fr) 110px;align-items:center;gap:8px}
.study-question .plan-in-quiz .plan-progress>.flex{font-size:11px}
.study-question .plan-in-quiz .plan-progress>.flex>.flex{gap:6px}
.study-question .plan-in-quiz .plan-progress .icon{width:16px;height:16px}
.study-question .plan-in-quiz .plan-progress .progress{margin:0;height:5px}
.study-question .plan-in-quiz .plan-progress>small{display:none}
.study-question .assessment-quiz-total{margin-top:7px;padding-top:6px;font-size:10px}
.study-question .quiz-top{margin-bottom:8px;gap:10px}
.study-question .session-card>.progress{height:4px}
.study-question .quiz-card{margin-top:12px}
.study-question .quiz-body{padding:18px 28px}
.study-question .quiz-tool-row{margin-bottom:12px;padding-bottom:9px}
.study-question .quiz-tool-row .btn{padding:6px 10px;min-height:34px}
.study-question .question-prompt{font-size:30px;line-height:1.35;margin:12px 0 5px}
.study-question .answers{margin:18px 0;gap:10px}
.study-question .answer-option{padding:12px 15px;min-height:50px}
.study-question .answer-input{margin:18px auto}
.study-question .listening-answer{margin:18px auto;gap:10px}
.study-question .sound-button{width:76px;height:76px;margin:12px}
.study-question .sound-button .icon{width:28px;height:28px}
.study-question .speech-settings{margin:9px 0}
.study-question .feedback{padding:12px 16px;margin:14px 0 0;scroll-margin-bottom:115px}
.study-question .feedback .expected-answer{margin-top:6px}
.study-question .quiz-save-note{margin-top:10px;font-size:10px}
.study-question .is-answered .quiz-actions{position:fixed;z-index:25;left:calc(50% + 119px);bottom:16px;transform:translateX(-50%);width:calc(100% - 300px);max-width:780px;padding:10px 14px;margin:0;border:1px solid #d7e2d0;border-radius:13px;background:#fffffff5;box-shadow:0 5px 28px #1e403226;display:flex;justify-content:flex-end;backdrop-filter:blur(8px)}
.study-question .is-answered .quiz-actions .btn{min-height:44px;min-width:200px}
@media(max-width:1150px){.study-question .is-answered .quiz-actions{left:calc(50% + 102.5px);width:calc(100% - 257px)}}
@media(max-width:850px){.study-question .is-answered .quiz-actions{left:50%;width:calc(100% - 28px);bottom:calc(78px + env(safe-area-inset-bottom,0px))}.study-question .feedback{scroll-margin-bottom:170px}main.study-question{padding-bottom:180px}}
@media(max-width:600px){.study-question>.page-title h1{font-size:19px}.study-question .quiz-body{padding:15px 16px}.study-question .plan-in-quiz .plan-progress{grid-template-columns:1fr;gap:6px}.study-question .quiz-tool-row{margin-bottom:10px}.study-question .quiz-tool-row .btn{min-height:40px}.study-question .question-prompt{font-size:26px;margin-top:10px}.study-question .answers{margin:16px 0;gap:8px}.study-question .answer-option{padding:11px 12px;min-height:48px;font-size:14px}.study-question .listening-answer{gap:12px;margin:16px 0}.study-question .is-answered .quiz-actions{padding:8px}.study-question .is-answered .quiz-actions .btn{width:100%;min-width:0;min-height:46px}.study-question .feedback{padding:12px}.study-question .pair-feedback{gap:6px}.keyboard-open .study-question .is-answered .quiz-actions{bottom:12px}}
.difficulty-options{display:grid;gap:10px;margin-top:18px}.difficulty-option{display:flex;align-items:flex-start;gap:12px;border:1px solid var(--border);border-radius:10px;padding:14px;cursor:pointer}.difficulty-option:has(input:checked){border-color:#91ae7d;background:#f0f6e8}.difficulty-option input{margin-top:4px}.difficulty-option span{min-width:0}.difficulty-option strong{display:block;font-size:14px}.difficulty-option small{display:block;font-size:11px;margin-top:3px;line-height:1.6}.scope-fields{grid-template-columns:1fr 1fr}.scope-note{font-size:12px;line-height:1.7;color:var(--muted);margin:12px 0}.batch-options{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:9px;margin:20px 0}.batch-options label{cursor:pointer;position:relative}.batch-options input{position:absolute;opacity:0}.batch-options span{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;border:1px solid var(--border);border-radius:10px;min-height:72px;font-size:11px;color:var(--muted)}.batch-options strong{font-size:24px;font-weight:650;color:var(--ink)}.batch-options input:checked+span{background:#eaf2df;border-color:var(--green);color:var(--green)}.batch-options input:focus-visible+span{outline:3px solid #bfd3ab;outline-offset:2px}.batch-summary{border-top:1px solid var(--border);padding-top:14px}.batch-summary>div>span:last-child{color:var(--muted);font-size:12px}.new-plan-choice{margin-top:16px;align-items:flex-start!important;font-size:11px!important}.batch-card .form-error{margin-top:13px}
.plans-section{margin-top:26px}.plan-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:17px}.plan-card{background:white;border:1px solid var(--border);border-radius:12px;padding:20px;min-width:0}.plan-card>p{color:var(--muted);font-size:11px;margin:12px 0;overflow-wrap:anywhere}.plan-card>.btn{margin-top:10px;font-size:12px}.plan-progress .progress{margin:12px 0 8px}.plan-progress>.flex{font-size:13px;gap:10px}.plan-progress small{font-size:11px}.plan-progress.compact{margin-top:16px}.plan-progress.compact>.flex{font-size:12px}.plan-in-quiz{padding:15px 18px;margin-bottom:17px}.plan-in-quiz .plan-progress.compact{margin:0}.dashboard-plan-section{display:grid;gap:17px;margin-bottom:24px}.continue-card{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:23px 26px;border:1px solid #cbdabb;background:#edf4e2;border-radius:13px}.continue-card h2{margin:8px 0 4px}.continue-card p{font-size:12px;color:var(--muted)}.continue-card .tag{font-size:10px}.learning-counts{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border:1px solid var(--border);border-radius:12px;background:#fff;overflow:hidden}.learning-counts>*{padding:17px 20px;border-right:1px solid var(--border);min-width:0}.learning-counts>:last-child{border:0}.learning-counts strong{display:block;font-size:25px;font-weight:650;line-height:1.3}.learning-counts small{display:block;font-size:11px;margin-top:5px}.learning-counts>a{background:#f7f9f1}.learning-counts>a:hover{background:#eff4e4}
.quiz-tool-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:22px;padding-bottom:15px;border-bottom:1px solid var(--border)}.quiz-tool-row .btn{font-size:11px}.starred{color:#97741f!important;background:#fff6df!important}.starred .icon{fill:#f7e5a8}.quiz-actions{display:flex;justify-content:center;gap:10px}.partial-results{text-align:left;padding:18px;background:#f7f9f2;border:1px solid var(--border);border-radius:10px;margin:20px 0}.partial-results h3{margin-bottom:13px}.partial-results>div{display:flex;justify-content:space-between;gap:14px;font-size:12px;margin:9px 0}.partial-results>small{display:block;margin-top:13px;font-size:10px}.result-badges{justify-content:center;margin-top:15px;gap:7px}.result-actions{display:grid;grid-template-columns:1fr 1fr;gap:11px;margin-top:24px}.result-actions>.info,.result-actions>.btn:first-child{grid-column:1/-1}.result-actions>.info{margin:0}.result-actions>.btn{font-size:12px;white-space:normal}.listening-answer input.graded-good:disabled{border-color:#8daf7b!important;background:#f0f7e9!important;color:#355c2a!important;opacity:1;-webkit-text-fill-color:#355c2a}.listening-answer input.graded-bad:disabled{border-color:#d3a298!important;background:#fff0ec!important;color:#a04b3c!important;opacity:1;-webkit-text-fill-color:#a04b3c}.quiz-body .info.error{text-align:left;line-height:1.7;font-size:12px}
@media(max-width:1100px){.plan-cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:600px){.plan-cards{grid-template-columns:1fr;gap:12px}.plan-card{padding:18px}.plan-card>.btn{width:100%;min-height:45px}.scope-fields{grid-template-columns:1fr;gap:16px}.difficulty-option{padding:14px;min-height:70px}.difficulty-option input{width:20px;height:20px;flex-shrink:0}.difficulty-option strong{font-size:15px}.difficulty-option small{font-size:12px}.batch-options{gap:8px}.batch-options span{min-height:75px}.batch-options strong{font-size:26px}.scope-note{font-size:12px}.batch-card .btn.primary{min-height:49px}.plan-progress>.flex{font-size:12px}.plan-in-quiz{padding:13px 15px}.plan-in-quiz .plan-progress strong{font-size:11px}.plan-in-quiz .plan-progress small{font-size:10px}.plan-in-quiz .progress{height:5px;margin-top:9px}.quiz-tool-row{margin-bottom:18px;gap:8px;padding-bottom:12px}.quiz-tool-row .btn{padding:7px 9px;min-height:41px;font-size:10px}.quiz-tool-row .badge{font-size:10px}.quiz-tool-row .icon{width:17px;height:17px}.quiz-actions{display:grid;grid-template-columns:minmax(0,1fr) auto}.quiz-actions .btn{min-width:0}.quiz-actions>.btn:last-child:not(:first-child){font-size:12px;padding-left:13px;padding-right:13px}.quiz-actions:has(>.btn:only-child){grid-template-columns:1fr}.learning-counts{grid-template-columns:1fr 1fr}.learning-counts>*{padding:15px;border-bottom:1px solid var(--border)}.learning-counts>:nth-child(2){border-right:0}.learning-counts>:nth-child(n+3){border-bottom:0}.learning-counts strong{font-size:25px}.learning-counts small{font-size:10px}.continue-card{padding:19px;flex-direction:column;align-items:stretch;gap:15px}.continue-card h2{font-size:18px}.continue-card .btn{width:100%;min-height:47px}.result-actions{grid-template-columns:1fr}.result-actions>.btn{min-height:47px;font-size:13px}.partial-results{padding:15px}.partial-results h3{font-size:13px}.partial-results>div{font-size:12px}.result-badges .badge{font-size:10px}.plans-section>.flex>h2{font-size:18px}.dashboard-plan-section{gap:14px;margin-bottom:20px}}
/* Examples stay collapsible so the fixed Next button remains within reach. */
.vocabulary-examples{margin-top:14px;border:1px solid var(--border);border-radius:11px;background:#f8faf5;text-align:left;font-size:13px;overflow-wrap:anywhere}.vocabulary-examples summary{padding:13px 16px;cursor:pointer;font-weight:600;color:var(--green);min-height:44px}.vocabulary-examples ol{margin:0;padding:0 18px 15px 38px}.vocabulary-examples li{padding:8px 0;line-height:1.65}.vocabulary-examples li p{margin:0 0 3px;color:var(--ink);font-weight:500}.vocabulary-examples li span{color:var(--muted);font-size:12px}.ai-grading-note{margin:10px 0 0;line-height:1.65;font-size:12px}.ai-grading-note>span{font-weight:600}.history-question .vocabulary-examples{max-width:760px}
@media(max-width:600px){.vocabulary-examples summary{padding:12px}.vocabulary-examples ol{padding-left:31px;padding-right:12px}.vocabulary-examples li{font-size:13px}}
.vocabulary-examples .example-status{margin:0;padding:4px 16px 14px;color:var(--muted);font-size:12px;line-height:1.7}.vocabulary-examples .retry-examples{margin:0 16px 14px}