:root{--navy:#1d3557;--navy-dark:#132945;--blue:#365fc5;--ink:#203047;--muted:#64748b;--line:#dce3ed;--bg:#f3f6fa;--teal:#08786f;--teal-bg:#e9f6f3;--orange:#ab5721;--orange-bg:#fff2e7;--shadow:0 7px 25px #1d355708;font-family:"Malgun Gothic","Apple SD Gothic Neo",system-ui,sans-serif;color:var(--ink);font-size:16px;line-height:1.6}
*{box-sizing:border-box}body{margin:0;background:var(--bg)}button,input,textarea,select{font:inherit}button{cursor:pointer;border:1px solid transparent;border-radius:8px;padding:9px 14px;background:white;color:var(--ink);font-size:.875rem;font-weight:600;line-height:1.5}button:hover{filter:brightness(.96)}button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #648cf0;outline-offset:3px}button:disabled{cursor:not-allowed;opacity:.45}input,textarea,select{border:1px solid var(--line);border-radius:7px;padding:10px 12px;background:white;color:var(--ink);max-width:100%}textarea{width:100%;resize:vertical;line-height:1.75;min-height:100px}select{font-size:.875rem;padding:8px}label{font-size:.875rem}h1,h2,h3,p{margin:0}h2{font-size:1.75rem;line-height:1.4;letter-spacing:-1px}h3{font-size:1.1rem}small,.muted{color:var(--muted)}.primary{background:var(--navy);color:white}.secondary{border-color:var(--line)}.text-button{padding:5px 0;background:transparent;color:var(--blue)}.danger{color:#ac3434}.icon-button{width:35px;height:35px;padding:0;border-color:var(--line);border-radius:50%}.topbar{background:white;border-bottom:1px solid var(--line);padding:18px 30px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:12px}.brand-mark{width:43px;height:43px;background:var(--navy);color:white;display:grid;place-items:center;font-size:30px;border-radius:12px;line-height:1}.brand b{display:block;font-size:1.16rem;letter-spacing:-.6px}.brand span:not(.brand-mark){display:block;font-size:.8rem;color:var(--muted)}.top-actions{display:flex;align-items:center;gap:9px;flex-wrap:wrap}.author-label{display:flex;gap:8px;align-items:center;margin-right:8px}.save-strip{padding:8px 30px;background:#edf2fa;color:#4c6080;display:flex;justify-content:space-between;gap:12px;font-size:.75rem}.save-strip .error{color:#ad2e22;font-weight:700}.workspace{max-width:1600px;margin:auto;display:grid;grid-template-columns:300px minmax(0,1fr);align-items:start;min-height:calc(100vh - 121px)}.sidebar{background:white;border-right:1px solid var(--line);padding:25px 18px;position:sticky;top:0;height:100vh;max-height:calc(100vh - 15px);display:flex;flex-direction:column;gap:18px}.sidebar-heading{display:flex;align-items:center;justify-content:space-between;padding:0 7px}.sidebar h1{font-size:1.1rem}.count{font-size:.75rem;color:var(--muted);font-variant-numeric:tabular-nums}.search{display:flex;align-items:center;border:1px solid var(--line);border-radius:8px;padding-left:12px;gap:6px}.search>span{font-size:24px;color:var(--muted)}.search input{border:0;min-width:0;width:100%;font-size:.875rem;padding-left:0}.segmented{display:flex;background:#f0f3f8;padding:4px;border-radius:8px;gap:2px}.segmented button{flex:1;padding:6px 3px;background:transparent;font-size:.8rem}.segmented button.active{background:white;box-shadow:0 2px 5px #10234213;color:var(--navy)}.category-tabs{display:flex;border-bottom:1px solid var(--line);gap:13px}.category-tabs button{padding:0 0 10px;border-radius:0;background:transparent;font-size:.8rem;color:var(--muted)}.category-tabs button.active{color:var(--navy);border-bottom:2px solid var(--navy)}#record-list{overflow:auto;min-height:140px;flex:1;padding:0 2px}.list-group{font-size:.75rem;color:var(--muted);margin:12px 7px 8px;letter-spacing:.3px}.record-button{width:100%;text-align:left;background:transparent;font-weight:400;padding:11px 12px;margin-bottom:5px;display:block;border:1px solid transparent}.record-button.active{background:#edf2fc;border-color:#cfdbf5;box-shadow:inset 3px 0 var(--blue)}.record-button .row{display:flex;justify-content:space-between;gap:10px;align-items:center}.record-button b{font-size:.9rem}.record-button small{font-size:.75rem}.record-button .preview{display:block;font-size:.75rem;color:var(--muted);white-space:nowrap;text-overflow:ellipsis;overflow:hidden;margin-top:4px}.sidebar-bottom{border-top:1px solid var(--line);padding:12px 6px 0;font-size:.75rem;color:var(--muted)}#overall-progress{margin-top:8px}.progress-bar{height:4px;background:#e8edf4;border-radius:5px;overflow:hidden;margin-top:8px}.progress-bar span{display:block;height:100%;background:var(--teal)}#main{padding:32px 40px 90px;min-width:0;max-width:1180px;width:100%;margin:0 auto}.record-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:22px}.eyebrow{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:.8rem;margin-bottom:8px}.pill{border-radius:5px;display:inline-block;padding:2px 8px;font-size:.75rem;font-weight:700;white-space:nowrap;background:#e8edf5;color:#4c6080}.pill.new{background:var(--teal-bg);color:var(--teal)}.pill.follow{background:var(--orange-bg);color:var(--orange)}.pill.ai{background:#eff1f5;color:#596880;font-weight:500}.heading-actions{display:flex;gap:8px;padding-top:20px;flex-wrap:wrap}.source-panel{border:1px solid var(--line);border-radius:12px;background:white;box-shadow:var(--shadow);margin-bottom:22px;overflow:hidden}.source-panel summary{cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px 22px;font-weight:700;font-size:.95rem}.source-panel summary::after{content:"−";font-size:20px;font-weight:400;color:var(--muted)}.source-panel:not([open]) summary::after{content:"+"}.source-content{padding:0 22px 20px}.source-text{white-space:pre-wrap;overflow-wrap:anywhere;font-size:.93rem;line-height:1.95;max-height:250px;overflow:auto;padding-right:10px}.source-meta{margin-top:14px;display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:.75rem;color:var(--muted)}.score-panel{margin-top:18px;border-top:1px solid var(--line);padding-top:15px}.score-heading{font-size:.8rem;font-weight:700;margin-bottom:10px;display:flex;align-items:center;gap:9px}.table-wrap{overflow:auto;max-width:100%}table{border-collapse:collapse;width:100%;font-size:.8rem}th,td{padding:8px 10px;text-align:left;border-bottom:1px solid #e9edf3;white-space:nowrap}th{background:#f5f7fa;color:#66758d;font-size:.75rem;font-weight:500}td.score{font-weight:700;color:var(--navy)}.score-note{font-size:.75rem;color:var(--muted);margin-top:8px}.questions-heading{display:flex;align-items:center;justify-content:space-between;gap:15px;margin:30px 0 14px}.questions-heading h3{display:flex;align-items:center;gap:10px}.questions-heading .count{font-weight:400}.question-card{background:white;border:1px solid var(--line);border-radius:12px;padding:22px 24px;margin-bottom:16px;box-shadow:var(--shadow);position:relative}.question-card.child{border-left:3px solid #edc297;margin-left:min(calc(var(--depth) * 20px),60px)}.question-meta{display:flex;align-items:center;gap:8px;margin-bottom:10px;flex-wrap:wrap;font-size:.75rem;color:var(--muted)}.q-number{color:var(--navy);font-size:.875rem;font-weight:800;margin-right:3px}.question-tools{margin-left:auto;display:flex;gap:10px;align-items:center}.question-tools button{font-size:.75rem;padding:3px 5px;background:transparent;color:var(--muted)}.question-tools button.starred{color:var(--orange)}.question-editor{font-size:1.05rem;font-weight:700;line-height:1.7;min-height:65px;padding:5px 0 10px;border-color:transparent;border-bottom-color:#eef1f5;border-radius:0;resize:vertical;background:white}.question-editor:focus{border-color:#a9bcea;padding:8px;border-radius:6px}.parent-reference{font-size:.75rem;color:#976337;margin-bottom:7px;overflow-wrap:anywhere}.basis{font-size:.75rem;color:#65758b;background:#f6f8fb;border-radius:6px;padding:9px 12px;margin:10px 0 15px;line-height:1.7}.basis strong{font-weight:700;color:#4d6385;margin-right:7px}.answer-grid{display:grid;grid-template-columns:1fr;gap:13px}.field-label{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px;font-size:.8rem;font-weight:700}.field-label span{font-weight:400;color:var(--muted);font-size:.75rem}.answer-grid input{width:100%;font-size:.875rem;background:#fcfdff}.answer-grid textarea{font-size:.9rem;background:#fcfdff;min-height:95px}.question-footer{display:flex;align-items:center;justify-content:space-between;margin-top:12px;gap:12px}.question-footer button{padding:4px 0;font-size:.8rem;background:transparent;color:var(--blue)}.question-footer small{font-size:.75rem}.hint{margin:7px 0 0;font-size:.75rem;color:var(--muted)}.hint summary{cursor:pointer}.hint p{padding-top:6px;line-height:1.8}.bottom-add{display:block;width:100%;border:1px dashed #aabdd9;background:#f9fbff;color:var(--blue);padding:16px;border-radius:10px}.empty{padding:38px 20px;text-align:center;color:var(--muted);font-size:.9rem}.legend{font-size:.75rem;color:var(--muted);margin:12px 0 0}.mobile-nav{display:none}dialog{border:1px solid var(--line);border-radius:16px;padding:0;width:min(760px,calc(100% - 30px));max-height:88vh;box-shadow:0 20px 90px #172c4a35;color:var(--ink)}dialog::backdrop{background:#12223d66;backdrop-filter:blur(2px)}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:22px 26px;border-bottom:1px solid var(--line);gap:18px}.modal-header h2{font-size:1.2rem;letter-spacing:0}.modal-body{padding:22px 26px;overflow:auto;max-height:65vh}.modal-body p{margin:0 0 14px;font-size:.9rem;line-height:1.9}.modal-body ul,.modal-body ol{padding-left:23px;font-size:.9rem}.modal-body li{margin-bottom:12px}.modal-footer{padding:17px 26px;display:flex;justify-content:flex-end;gap:10px;border-top:1px solid var(--line)}.modal-field{display:block;margin-bottom:17px}.modal-field input,.modal-field textarea,.modal-field select{display:block;width:100%;margin-top:6px}.check-row{display:flex;align-items:flex-start;gap:10px;margin:14px 0;font-size:.9rem}.check-row input{margin-top:6px;flex-shrink:0}.import-item{padding:12px 0;border-bottom:1px solid var(--line)}.import-item p{font-size:.8rem;margin:5px 0;color:var(--muted)}#toast{position:fixed;bottom:26px;left:50%;transform:translateX(-50%);background:var(--navy-dark);color:white;padding:12px 22px;border-radius:9px;box-shadow:0 4px 20px #182b4533;max-width:90%;font-size:.875rem;display:none;z-index:10}#toast.show{display:block}#print-root{display:none}.save-warning{background:#fff2e7;padding:12px;border-radius:8px;color:#8d4920}.help-emphasis{background:#edf2fa;padding:15px;border-radius:8px}.grade-summary{margin-bottom:22px}.grade-summary h3{margin-bottom:12px}.source-edit{height:240px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
@media(min-width:1450px){.workspace{grid-template-columns:315px minmax(0,1fr)}#main{padding-left:55px;padding-right:55px}}
@media(max-width:1050px){.topbar{padding:16px 20px}.workspace{grid-template-columns:255px minmax(0,1fr)}#main{padding:25px 24px 70px}.sidebar{padding:22px 13px}.top-actions{gap:6px}.brand span:not(.brand-mark){display:none}.heading-actions{padding-top:10px}.question-card{padding:18px}.record-heading{gap:10px}h2{font-size:1.5rem}}
@media(max-width:760px){.topbar{padding:14px 16px;flex-wrap:wrap;gap:14px}.brand span:not(.brand-mark){display:block}.top-actions{width:100%;justify-content:space-between}.top-actions .author-label{margin:0}.top-actions button{padding:8px 10px;font-size:.75rem}.top-actions .icon-button{padding:0}.save-strip{padding:8px 16px;font-size:.75rem;display:block}.save-strip>span:last-child{display:none}.workspace{display:block}.sidebar{position:static;height:auto;max-height:none;border-right:0;border-bottom:1px solid var(--line);padding:18px 16px;gap:12px}#record-list{max-height:200px;min-height:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px}.list-group{grid-column:1/-1;margin:8px 0 3px}.record-button{padding:8px;margin:0}.record-button .preview{display:none}.sidebar-bottom{display:none}#main{padding:24px 16px 65px}.record-heading{flex-wrap:wrap}.heading-actions{padding:0;gap:7px}.source-content{padding:0 16px 16px}.source-panel summary{padding:16px}.source-text{max-height:230px;font-size:.875rem}.question-card{padding:16px}.question-card.child{margin-left:min(calc(var(--depth)*8px),24px)}.question-tools{gap:3px}.question-editor{font-size:1rem}.question-footer{align-items:flex-start}.question-footer small{max-width:52%;text-align:right}.source-meta{flex-wrap:wrap}.questions-heading{margin-top:24px}h2{font-size:1.5rem}.modal-body{padding:20px}.modal-header,.modal-footer{padding:17px 20px}.source-panel{border-radius:9px}}
@media print{
 @page{size:A4;margin:15mm 14mm 16mm}
 :root{font-size:10.5pt;color:#172030;line-height:1.6}
 body{background:white!important}#app,dialog,#toast,#import-file{display:none!important}#print-root{display:block!important}*{box-shadow:none!important;text-shadow:none!important}
 .print-activity{break-after:page;page-break-after:always}.print-activity:last-child{break-after:auto;page-break-after:auto}.print-activity.flow{break-after:auto;page-break-after:auto;margin-bottom:12mm}
 .print-header{border-bottom:2px solid #25364e;padding-bottom:4mm;margin-bottom:5mm;break-after:avoid}.print-kicker{font-size:9pt;color:#58647a;margin-bottom:1.5mm}.print-header h1{font-size:18pt}.print-header p{font-size:9pt;color:#58647a;margin-top:2mm}.print-source-title{font-size:11pt;margin:4mm 0 2mm;break-after:avoid}.print-source{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.8;font-size:9.5pt;margin-bottom:3mm;orphans:3;widows:3}.print-source-meta{font-size:8pt;color:#647087;margin:2mm 0 4mm}.print-academics{margin-bottom:5mm}.print-academics table{font-size:8.5pt}.print-academics th,.print-academics td{white-space:normal;padding:1.5mm 2mm}.print-academics tr{break-inside:avoid}.print-academics thead{display:table-header-group}
 .print-question{border:1px solid #b7c2d2;margin:0 0 4mm;padding:3.5mm 4mm;break-inside:avoid;page-break-inside:avoid;border-radius:2mm}.print-question.follow{border-left:3px solid #a8753e}.print-q-meta{font-size:8.5pt;color:#4f6079;margin-bottom:1.5mm}.print-question h3{font-size:11pt;font-weight:700;line-height:1.65;white-space:pre-wrap;overflow-wrap:anywhere;break-after:avoid}.print-parent{font-size:8.5pt;color:#7b582d;white-space:pre-wrap;margin-bottom:1mm}.print-basis{font-size:8.5pt;color:#596980;margin:2mm 0;white-space:pre-wrap;overflow-wrap:anywhere}.print-answer-label{font-size:9pt;font-weight:700;margin-top:2mm;break-after:avoid}.print-answer{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.8;orphans:3;widows:3}.print-blank{height:12mm;border-bottom:1px dotted #aebacc}.print-blank.keyword{height:7mm}.print-activity h2{font-size:12pt;margin:5mm 0 3mm;break-after:avoid}.print-noquestions{padding:6mm;border:1px solid #ddd}.print-question.long{break-inside:auto;page-break-inside:auto}.print-footer{font-size:8pt;color:#67778c;margin-top:3mm}
}

/* Editable answers grow with their content so reading does not require an inner scroll. */
.question-editor,.answer-grid textarea{overflow-y:hidden}

/* Show the complete student record; the page itself handles long content. */
@media screen{.source-text{max-height:none;overflow:visible;padding-right:0}}