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}
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@media print{body{background:#fff;color:#111}.ex-note-editor,.ex-note-card{border-color:#ccc;background:#fff;color:#111}.ex-watermark{opacity:1}.ex-drawer-body{overflow:visible}}

/* Exam Mode V3 teaching runtime components */
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.ex-slide-label{color:#9ed8ff;text-transform:uppercase;letter-spacing:.14em;font-weight:900;font-size:.83rem}
.ex-teach-copy{font-size:clamp(1rem,1.7vw,1.35rem);line-height:1.7;color:var(--ex-muted);max-width:980px;margin:0}
.ex-teach-list{display:grid;gap:.7rem;font-size:clamp(1rem,1.5vw,1.22rem);line-height:1.55;margin:.4rem 0 0;padding-left:1.4rem}
.ex-term-row{display:flex;align-items:center;gap:.6rem;flex-wrap:wrap;font-size:1.05rem;color:var(--ex-muted)}
.ex-smart-term{position:relative;color:#dbe9ff;font-weight:850;text-decoration:underline dotted #8de0ff;text-underline-offset:5px;cursor:help;outline:none}
.ex-term-popover{position:absolute;left:50%;bottom:calc(100% + 12px);z-index:15;width:min(330px,82vw);transform:translateX(-50%) translateY(8px);opacity:0;visibility:hidden;pointer-events:none;background:#0d0a19;border:1px solid rgba(142,191,255,.36);border-radius:20px;padding:1rem;box-shadow:0 20px 60px rgba(0,0,0,.48);font-weight:500;color:#f6f2ea;text-decoration:none}
.ex-term-popover p{font-size:.92rem;line-height:1.45;margin:.6rem 0}.ex-smart-term:hover .ex-term-popover,.ex-smart-term:focus .ex-term-popover,.ex-smart-term:focus-within .ex-term-popover{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0);pointer-events:auto}
.ex-term-actions{display:flex;gap:.45rem;flex-wrap:wrap;margin-top:.75rem}
.ex-formula-card{display:grid;gap:1rem;background:rgba(10,14,31,.6);border:1px solid rgba(164,199,255,.22);border-radius:24px;padding:clamp(1rem,2.3vw,1.7rem)}
.ex-katex{overflow-x:auto;overflow-y:hidden;padding:.4rem 0;color:#f8f5ee}.ex-katex.small{font-size:.95rem}.ex-formula-parts{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:.7rem}.ex-formula-part{display:grid;gap:.25rem;padding:.85rem;border-radius:16px;background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.08)}.ex-formula-part span{color:var(--ex-muted);font-size:.85rem}
.ex-exam-tip,.ex-warning-tip{padding:.8rem 1rem;border-radius:15px;margin:0;font-size:.98rem;line-height:1.5}.ex-exam-tip{background:rgba(84,145,255,.12);border:1px solid rgba(123,174,255,.26)}.ex-warning-tip{background:rgba(219,181,55,.09);border:1px solid rgba(219,181,55,.28)}
.ex-visual-card{display:grid;gap:.8rem;margin:0;padding:1rem;border-radius:22px;border:1px solid rgba(164,199,255,.2);background:rgba(5,10,25,.55)}.ex-visual-card figcaption{font-weight:850;color:#dbe9ff}.ex-teach-chart{display:block;width:100%;height:280px;border-radius:15px;background:rgba(255,255,255,.02)}
.ex-worked-example,.ex-exam-answer{border-radius:20px;padding:1rem 1.15rem;background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.11);line-height:1.65;margin:0}.ex-exam-answer{border-left:4px solid #d9b940}
.ex-check-choices{display:flex;gap:.75rem;flex-wrap:wrap;margin-top:.6rem}
.ex-history-card,.ex-dashboard-room,.ex-recent-room{display:grid;gap:.65rem;padding:1rem;border:1px solid rgba(255,255,255,.1);background:rgba(255,255,255,.045);border-radius:19px}.ex-history-card h3,.ex-dashboard-room h2,.ex-recent-room h3{margin:0}.ex-history-card p,.ex-dashboard-room p,.ex-recent-room p{margin:0;color:var(--ex-muted);line-height:1.5}
.ex-control-item{width:100%;display:flex;justify-content:space-between;align-items:center;padding:1rem;border:1px solid rgba(255,255,255,.11);border-radius:17px;background:rgba(255,255,255,.035);color:#faf7f1;font:inherit;font-weight:800;text-align:left;cursor:pointer}.ex-control-item:hover,.ex-control-item:focus-visible{border-color:#7da9ff;background:rgba(104,153,255,.12)}.ex-control-item.vip{border-color:rgba(217,185,64,.28)}.ex-vip-badge{padding:.25rem .5rem;border-radius:999px;background:rgba(217,185,64,.14);color:#f1d562;font-weight:900}
.ex-note-card{padding:.9rem;border-radius:15px;background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.08);margin-bottom:.65rem}.ex-note-card h4{margin:0 0 .45rem}.ex-note-card p{margin:.2rem 0;line-height:1.55;color:var(--ex-muted)}.ex-note-card.mistake{border-color:rgba(255,110,110,.32)}
.ex-mentor-message{padding:.9rem 1rem;border-radius:18px;margin:.7rem 0;line-height:1.55}.ex-mentor-message.ai{background:rgba(90,130,255,.1);border:1px solid rgba(110,160,255,.18)}.ex-mentor-message.user{margin-left:2rem;background:rgba(255,255,255,.075)}.ex-mentor-message.error{border-color:rgba(255,100,100,.3);color:#ffb8b8}
.ex-stage-dot{width:9px;height:9px;border-radius:50%;border:0;background:rgba(255,255,255,.25);cursor:pointer;padding:0}.ex-stage-dot.active{width:26px;border-radius:999px;background:#8de0ff}
.ex-recent-room{min-width:240px}.ex-room-list{display:flex;gap:.7rem;overflow:auto;padding-bottom:.5rem}
.ex-static-celebration{font-size:2rem;font-weight:900;color:#f4d85f;text-align:center;padding:2rem}
.ex-muted{color:var(--ex-muted)}
.ex-stat-card strong{font-size:clamp(2rem,4vw,3.5rem)}
.ex-toast.warn{border-color:rgba(219,181,55,.45)}.ex-toast.error{border-color:rgba(255,100,100,.5)}.ex-toast.success{border-color:rgba(70,220,155,.42)}
@media(max-width:760px){.ex-teach-slide{min-height:360px;padding:1rem}.ex-teach-slide h2{font-size:clamp(2rem,11vw,3.2rem)}.ex-teach-chart{height:230px}.ex-term-popover{position:fixed;left:50%;bottom:calc(env(safe-area-inset-bottom) + 18px);top:auto;transform:translateX(-50%);width:calc(100vw - 28px)}.ex-smart-term:hover .ex-term-popover,.ex-smart-term:focus .ex-term-popover,.ex-smart-term:focus-within .ex-term-popover{transform:translateX(-50%)}.ex-check-choices{display:grid}.ex-check-choices .ex-btn{width:100%}}
.ex-error-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.ex-error p{margin:0}

/* Exam Mode v3 marks-safe assessment and portable Live Notes */
.ex-question-form{margin-top:22px;border:1px solid rgba(155,220,255,.28);border-radius:22px;padding:20px;background:rgba(6,9,24,.58)}
.ex-question-form h3{margin:0 0 14px;font-size:20px}
.ex-question-options{display:grid;gap:10px}
.ex-question-option{display:flex;align-items:flex-start;gap:11px;padding:13px 15px;border:1px solid var(--ex-line);border-radius:15px;background:rgba(255,255,255,.035);cursor:pointer}
.ex-question-option:hover,.ex-question-option:has(input:checked){border-color:rgba(155,220,255,.62);background:rgba(104,139,255,.12)}
.ex-question-option input{margin-top:4px;accent-color:#7ba8ff}
.ex-question-answer{width:100%;min-height:132px;resize:vertical}
.ex-question-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.ex-grade-result{margin-top:16px;padding:17px;border:1px solid rgba(87,217,154,.38);border-radius:17px;background:rgba(87,217,154,.075)}
.ex-grade-score{display:block;font-size:21px;color:#9ff0c8;margin-bottom:8px}
.ex-ideal-answer{margin-top:12px;padding:13px;border-left:4px solid var(--ex-cyan);background:rgba(155,220,255,.075)}
#examNotesDrawer.ex-drawer.floating{resize:both;overflow:hidden;min-width:360px;min-height:360px;max-width:calc(100vw - 16px);max-height:calc(100vh - 16px)}
#examNotesDrawer .ex-drawer-head{cursor:move;touch-action:none;user-select:none}
#examNotesDrawer .ex-drawer-close{cursor:pointer}
html[data-exam-print-notes="1"] body>*:not(#examNotesDrawer){display:none!important}
html[data-exam-print-notes="1"] #examNotesDrawer{display:flex!important;position:static!important;width:100%!important;height:auto!important;min-width:0!important;max-width:none!important;max-height:none!important;resize:none!important;border:0!important;box-shadow:none!important;background:#fff!important;color:#111!important}
html[data-exam-print-notes="1"] #examNotesDrawer .ex-drawer-head{color:#111;border-color:#bbb}
html[data-exam-print-notes="1"] #examNotesDrawer .ex-drawer-close,html[data-exam-print-notes="1"] #examNotesDrawer .ex-note-toolbar{display:none!important}
html[data-exam-print-notes="1"] #examNotesDrawer .ex-drawer-body{overflow:visible!important;color:#111;background:#fff}
html[data-exam-print-notes="1"] #examNotesDrawer .ex-note-card,html[data-exam-print-notes="1"] #examNotesDrawer .ex-note-editor{color:#111;background:#fff;border-color:#bbb;break-inside:avoid}
html[data-exam-print-notes="1"] #examNotesDrawer .ex-watermark{position:fixed;left:0;right:0;bottom:8mm;color:#777;opacity:1}
@media(max-width:760px){#examNotesDrawer.ex-drawer.floating{resize:none;min-width:0;min-height:0;max-width:none;max-height:none}#examNotesDrawer .ex-drawer-head{cursor:default}.ex-question-actions{display:grid}.ex-question-actions .ex-btn{width:100%}}

/* Exam Mode v3.1 — calmer setup, source-backed curriculum and compact Exam Memory */
.ex-entry h1{font-size:clamp(42px,5.4vw,76px);line-height:.98;letter-spacing:-.055em;overflow-wrap:anywhere}
.ex-wizard-stage{margin:3.5vh auto 0}

.ex-wizard-copy{font-size:clamp(16px,1.45vw,20px);line-height:1.5;max-width:820px}


.ex-wizard-nav .ex-btn.primary{grid-column:2;width:100%;min-width:0}
.ex-wizard-nav #examWizardBack{grid-column:1;justify-self:start;background:transparent;border-color:transparent;box-shadow:none;padding-left:8px}
.ex-wizard-nav #examWizardBack:before{content:"←";margin-right:8px;font-size:1.05em}
.ex-wizard-nav #examWizardSkip{grid-column:3;justify-self:end;background:transparent;border-color:transparent;box-shadow:none;padding-right:8px}
.ex-wizard-nav #examWizardBack:hover,.ex-wizard-nav #examWizardSkip:hover{background:rgba(255,255,255,.055);border-color:var(--ex-line)}
.ex-card-button{min-height:104px;padding:18px 20px}
.ex-card-button strong{font-size:20px;line-height:1.18;padding-right:28px;overflow-wrap:anywhere}
.ex-card-button>span:not(.ex-check){font-size:14px}
.ex-curriculum-source{display:grid;gap:5px;margin:0 0 18px;padding:14px 16px;border:1px solid rgba(155,220,255,.24);border-radius:18px;background:rgba(80,124,230,.08);text-align:left}
.ex-curriculum-source strong{font-size:15px;color:#dceaff}.ex-curriculum-source span{color:var(--ex-cyan);font-size:12px;font-weight:800}.ex-curriculum-source small{color:var(--ex-muted);line-height:1.45}
.ex-curriculum-note{margin:12px 0 0;color:var(--ex-muted);font-size:13px;line-height:1.5}
.ex-subject-grid{margin-top:0}.ex-selected-subjects{margin-top:16px}.ex-topic-origin{font-size:11px!important;color:var(--ex-cyan)!important;text-transform:uppercase;letter-spacing:.07em;font-weight:850}

.ex-severity-section{border-color:rgba(255,90,105,.48);background:linear-gradient(145deg,rgba(180,23,44,.18),rgba(65,5,18,.22))}
.ex-severity-section h3{color:#ffb4bd}.ex-severity-section .ex-pill{border-color:rgba(255,105,120,.34)}.ex-severity-section .ex-pill.active{border-color:#ff6b7d;background:rgba(210,40,62,.28);box-shadow:0 0 0 1px rgba(255,107,125,.18)}
.ex-upload-limit{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:14px;padding:13px 16px;border:1px solid rgba(240,202,80,.28);border-radius:18px;background:rgba(240,202,80,.07)}
.ex-upload-limit strong{color:#ffe482}.ex-upload-limit span{font-weight:800}.ex-upload-limit small{width:100%;color:var(--ex-muted);line-height:1.45}
.ex-dropzone{min-height:180px;padding:22px}.ex-dropzone strong{font-size:18px}.ex-dropzone p{font-size:13px}
.ex-file-list{gap:10px;margin-top:14px}.ex-file-card{display:block;padding:12px 14px;border-radius:17px}.ex-file-summary{display:flex;align-items:center;gap:10px;min-width:0}.ex-file-pill{display:block;min-width:0;max-width:min(58vw,600px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding:9px 13px;border-radius:999px;background:rgba(104,139,255,.14);border:1px solid rgba(155,220,255,.24);font-weight:850}.ex-file-size{color:var(--ex-muted);font-size:12px;white-space:nowrap}.ex-file-actions{display:flex;gap:8px;margin-left:auto}.ex-file-settings{margin-top:12px;padding-top:12px;border-top:1px solid var(--ex-line);display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.ex-file-settings[hidden]{display:none!important}.ex-classroom-instructions{margin-top:18px}
.ex-review-grid{align-items:start}.ex-review-card p{overflow-wrap:anywhere}.ex-choice-section,.ex-review-card{min-width:0}.ex-form-grid>*{min-width:0}
.ex-generating-card h1,.ex-timetable h1,.ex-dashboard h1{font-size:clamp(38px,5vw,72px);line-height:1;letter-spacing:-.045em;overflow-wrap:anywhere}
.ex-time-block{min-width:0}.ex-time-block .ex-input,.ex-time-block .ex-select{min-width:0}

@media(max-width:760px){
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  .ex-wizard-copy{font-size:15px;line-height:1.45}
  .ex-wizard-stage{margin:20px auto 0}

  .ex-grid,.ex-grid.two,.ex-grid.four,.ex-form-grid,.ex-review-grid{grid-template-columns:1fr}
  .ex-card-button{min-height:92px;padding:16px}.ex-card-button strong{font-size:18px}
  .ex-wizard-nav .ex-btn{padding:0 8px;font-size:12px}.ex-wizard-nav #examWizardBack:before{margin-right:4px}

  .ex-file-summary{display:grid;grid-template-columns:minmax(0,1fr) auto}.ex-file-pill{max-width:none}.ex-file-size{justify-self:end}.ex-file-actions{grid-column:1/-1;margin-left:0;display:grid;grid-template-columns:1fr 1fr}.ex-file-actions .ex-btn{width:100%}.ex-file-settings{grid-template-columns:1fr}
  .ex-upload-limit{align-items:flex-start}.ex-upload-limit span{font-size:12px}
  .ex-generating-card h1,.ex-timetable h1,.ex-dashboard h1{font-size:clamp(34px,10vw,50px)}
}


/* Exam Mode v3.2 — calm wizard typography, aligned navigation and overlap resistance */
.ex-entry h1{font-size:clamp(38px,4.2vw,60px);line-height:1.02;letter-spacing:-.045em}

.ex-generating-card h1,.ex-timetable h1,.ex-dashboard h1,.ex-welcome h1{font-size:clamp(34px,3.9vw,54px);line-height:1.04;letter-spacing:-.04em}
.ex-wizard-stage .ex-kicker{font-size:12px}

.ex-wizard-nav #examWizardBack,.ex-wizard-nav #examWizardSkip{display:inline-flex;align-items:center;justify-content:center;gap:7px;white-space:nowrap;width:auto;min-width:max-content;line-height:1}
.ex-wizard-nav #examWizardBack:before{display:inline-block;line-height:1;transform:translateY(-1px)}
.ex-wizard-nav .ex-btn{overflow:visible}
.ex-card-button,.ex-review-card,.ex-choice-section,.ex-time-block,.ex-file-card{overflow:hidden}
.ex-card-button strong,.ex-card-button span,.ex-review-card p,.ex-review-card strong,.ex-choice-section p,.ex-choice-section strong,.ex-time-block *{overflow-wrap:anywhere;word-break:normal}
.ex-grid,.ex-review-grid,.ex-form-grid{align-items:stretch}.ex-grid>*{min-width:0}
.ex-file-summary{min-height:44px}.ex-file-actions .ex-btn{min-height:40px;padding:0 16px}.ex-file-settings label{min-width:0}
.ex-file-settings .ex-input,.ex-file-settings .ex-select,.ex-file-settings .ex-textarea{width:100%;min-width:0}
.ex-curriculum-source span,.ex-curriculum-source small{overflow-wrap:anywhere}
@media(max-width:760px){
 .ex-entry h1{font-size:clamp(34px,10vw,46px)}

 .ex-generating-card h1,.ex-timetable h1,.ex-dashboard h1,.ex-welcome h1{font-size:clamp(30px,9vw,42px)}

 .ex-wizard-nav #examWizardBack,.ex-wizard-nav #examWizardSkip{min-width:0;width:64px;font-size:11px;padding:0 4px;gap:2px}
 .ex-wizard-nav #examWizardBack:before{margin-right:1px}
}


/* Exact-syllabus, rich-content and interactive-representation upgrade */
.ex-state-grid{grid-template-columns:repeat(auto-fit,minmax(190px,1fr));max-height:min(54vh,620px);overflow:auto;padding-right:8px;scrollbar-width:thin}
.ex-state-other,.ex-empty-mapping{margin:18px auto;max-width:920px}.ex-empty-mapping{padding:18px 20px;border:1px solid rgba(141,224,255,.24);border-radius:18px;background:rgba(141,224,255,.06)}
.ex-empty-mapping p{margin:.45rem 0 0;color:var(--muted)}
.ex-rich-content{min-width:0;line-height:1.65}.ex-rich-content>*:first-child{margin-top:0}.ex-rich-content>*:last-child{margin-bottom:0}
.ex-rich-content h1,.ex-rich-content h2,.ex-rich-content h3,.ex-rich-content h4,.ex-rich-content h5,.ex-rich-content h6{line-height:1.18;margin:1.05em 0 .5em}
.ex-rich-content p{margin:.65em 0}.ex-rich-content ul,.ex-rich-content ol{margin:.65em 0;padding-left:1.45em}.ex-rich-content li+li{margin-top:.3em}
.ex-rich-content blockquote{margin:1em 0;padding:.7em 1em;border-left:4px solid var(--blue);background:rgba(119,164,255,.08);border-radius:0 12px 12px 0}
.ex-inline-code{padding:.12em .38em;border-radius:.4em;background:rgba(255,255,255,.1);font:500 .92em ui-monospace,SFMono-Regular,Consolas,monospace}
.ex-code-block{margin:1rem 0;border:1px solid rgba(255,255,255,.14);border-radius:15px;overflow:hidden;background:#080b17}.ex-code-label{padding:.55rem .85rem;font-size:.78rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;background:rgba(119,164,255,.14)}
.ex-code-block pre{margin:0;padding:1rem;overflow:auto;max-width:100%;scrollbar-width:thin}.ex-code-block code{font:500 .88rem/1.55 ui-monospace,SFMono-Regular,Consolas,monospace;white-space:pre;tab-size:2}
.ex-table-wrap{overflow:auto;margin:1rem 0;border:1px solid rgba(255,255,255,.14);border-radius:14px}.ex-rich-content table{border-collapse:collapse;width:100%;min-width:420px}.ex-rich-content th,.ex-rich-content td{padding:.65rem .75rem;border-bottom:1px solid rgba(255,255,255,.1);text-align:left;vertical-align:top}.ex-rich-content th{background:rgba(119,164,255,.12)}
.ex-math-display{overflow:auto;padding:.7rem 0;text-align:center}.ex-math-inline{display:inline-flex;max-width:100%;vertical-align:middle}.ex-math-display math{font-size:1.22em}.ex-math-error{color:#ff9c9c}
.ex-simulation-card{display:grid;gap:12px;margin-top:1rem}.ex-simulation-frame{width:100%;height:clamp(360px,58vh,720px);border:1px solid rgba(141,224,255,.3);border-radius:18px;background:#050713}
.ex-question-origin{display:flex;flex-wrap:wrap;gap:.45rem .8rem;align-items:center;margin:.65rem 0;padding:.6rem .75rem;border:1px solid rgba(217,185,64,.3);border-radius:12px;background:rgba(217,185,64,.07);font-size:.82rem}.ex-question-origin span{color:var(--muted)}.ex-question-origin a{color:#a8dfff}
@media(max-width:760px){.ex-state-grid{grid-template-columns:1fr 1fr;max-height:55vh}.ex-simulation-frame{height:52vh}.ex-code-block pre{font-size:.78rem}.ex-rich-content table{min-width:560px}}

/* Exam Mode v4 — selectable exams, resilient layout, tutorial consent and practice papers */
.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
.ex-choice-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin-bottom:14px}.ex-choice-heading h3{margin-bottom:6px}.ex-choice-heading p{margin:0}.ex-selection-count{flex:none;border:1px solid var(--ex-line);border-radius:999px;padding:7px 11px;color:var(--ex-cyan);font-size:12px;font-weight:900}.ex-search-field{display:block;margin-bottom:16px}.ex-competitive-picker{overflow:visible}.ex-competitive-grid{grid-template-columns:repeat(3,minmax(0,1fr));max-height:min(56vh,640px);overflow:auto;padding:4px 8px 4px 2px;scrollbar-width:thin}.ex-competitive-grid .ex-card-button{min-height:92px;padding:17px 18px}.ex-competitive-grid .ex-card-button strong{font-size:18px}.ex-empty-search{margin:18px 0 0;text-align:center;color:var(--ex-muted)}
.ex-add-row>*{min-width:0}.ex-custom-topic-row .ex-btn{min-width:126px}.ex-topic-tools .ex-btn{white-space:nowrap}
.ex-toast-message{flex:1;line-height:1.45}.ex-toast-close{flex:none;width:30px;height:30px;border:1px solid var(--ex-line);border-radius:50%;background:rgba(255,255,255,.06);color:var(--ex-text);font-size:20px;line-height:1;cursor:pointer}.ex-toast-close:hover{background:rgba(255,255,255,.13)}
.ex-decision-overlay{position:fixed;inset:0;z-index:165;display:grid;place-items:center;padding:22px;background:rgba(2,3,9,.83);backdrop-filter:blur(9px)}.ex-decision-overlay[hidden]{display:none!important}.ex-decision-card{width:min(620px,100%);border:1px solid rgba(155,220,255,.28);border-radius:28px;padding:clamp(24px,5vw,46px);background:linear-gradient(145deg,#11162a,#090a16);box-shadow:0 30px 100px rgba(0,0,0,.7);text-align:left}.ex-decision-card h2{font-size:clamp(32px,5vw,54px);line-height:1.02;letter-spacing:-.045em;margin:12px 0 16px}.ex-decision-card p{color:var(--ex-muted);font-size:17px;line-height:1.6}.ex-decision-cost{border-left:4px solid var(--ex-gold);padding:12px 15px;background:rgba(240,202,80,.08);border-radius:0 14px 14px 0}.ex-decision-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.ex-decision-actions .ex-btn{min-width:180px}
.ex-tutorial{background:transparent;backdrop-filter:none;pointer-events:none}.ex-tutorial-card{pointer-events:auto}.ex-tutorial-spot{box-shadow:0 0 0 9999px rgba(2,3,9,.82),0 0 38px rgba(155,220,255,.56);transition:left .18s ease,top .18s ease,width .18s ease,height .18s ease}
.ex-teach-slide{min-height:0;align-content:start}
.ex-sample-paper-meta{display:flex;gap:9px;flex-wrap:wrap;align-items:center}.ex-sample-paper-meta>span{border:1px solid var(--ex-line);border-radius:999px;padding:7px 11px;font-size:12px;font-weight:850;color:var(--ex-muted)}.ex-sample-paper-meta .ex-practice-badge{border-color:rgba(240,202,80,.4);color:#ffe58a;background:rgba(240,202,80,.08)}.ex-sample-question-list{display:grid;gap:18px}.ex-sample-question{border:1px solid var(--ex-line);border-radius:22px;padding:20px;background:rgba(255,255,255,.035);break-inside:avoid}.ex-sample-question-head{display:flex;justify-content:space-between;gap:16px;align-items:center;margin-bottom:8px}.ex-sample-question-head strong{font-size:18px}.ex-sample-question-head span{color:var(--ex-muted);font-size:12px;text-transform:capitalize}.ex-sample-answer{margin-top:12px}.ex-sample-paper-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:10px}.ex-sample-answer-key{display:grid;gap:14px}.ex-answer-key-item{border:1px solid var(--ex-line);border-radius:18px;padding:18px;background:rgba(255,255,255,.035)}.ex-answer-key-item p{font-size:16px}.ex-print-frame{position:fixed;width:1px;height:1px;right:0;bottom:0;border:0;opacity:0;pointer-events:none}.ex-print-only{display:none}
@media(max-width:980px){.ex-competitive-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){
 .ex-choice-heading{display:grid}.ex-selection-count{justify-self:start}.ex-competitive-grid{grid-template-columns:1fr;max-height:52vh}.ex-competitive-grid .ex-card-button{min-height:84px}.ex-custom-topic-row .ex-btn,.ex-topic-tools .ex-btn{width:100%}
 .ex-decision-actions{display:grid}.ex-decision-actions .ex-btn{width:100%;min-width:0}.ex-decision-card{border-radius:23px;padding:24px}.ex-decision-card h2{font-size:34px}
 .ex-teach-slide{min-height:0!important;padding:1rem!important}.ex-stage-dots{max-width:38vw;overflow:auto;padding:5px}.ex-sample-question{padding:16px}.ex-sample-question-head{align-items:flex-start}.ex-sample-paper-actions{display:grid}.ex-sample-paper-actions .ex-btn{width:100%}
}
@media print{
 .ex-print-only{display:flex!important}.ex-print-heading{justify-content:space-between;align-items:center;border-bottom:2px solid #111;padding-bottom:10px;margin-bottom:18px;color:#111}.ex-print-heading strong{font-size:24px}.ex-print-heading span{font-size:12px}.ex-print-footer{position:fixed;left:0;right:0;bottom:2mm;justify-content:center;color:#777;font-size:9pt}.ex-watermark{position:fixed!important;left:0!important;right:0!important;bottom:8mm!important;color:#999!important;opacity:1!important}html[data-exam-print-notes="1"] #examNotesDrawer .ex-drawer-head{display:none!important}html[data-exam-print-notes="1"] #examNotesDrawer .ex-drawer-body{padding:12mm 14mm 18mm!important}
}

/* Exam Mode v4 print and long-title hardening */
.ex-stage-header h1{font-size:clamp(38px,4.8vw,76px);line-height:1;overflow-wrap:anywhere;word-break:normal}
.ex-teach-slide h2{overflow-wrap:anywhere;word-break:normal}
html[data-exam-print-notes="1"] body>#examApp{display:block!important;min-height:0!important;background:#fff!important}
html[data-exam-print-notes="1"] #examApp>*:not(#examNotesDrawer){display:none!important}
html[data-exam-print-notes="1"] #examNotesDrawer{display:flex!important}

/* Exam Mode v4 navigation collision hardening */

@media(min-width:761px){



}
@media(max-width:760px){}
/* EXAM MODE V5 — CANONICAL LAYOUT + MOTION OWNER
   Ownership rule: this block is the sole owner of screen layout, classroom geometry,
   drawers, side controls, wizard navigation geometry, and motion timing. */
:root{
  --ex-motion-fast:140ms;
  --ex-motion-normal:220ms;
  --ex-motion-slow:360ms;
  --ex-motion-ease:cubic-bezier(.22,.8,.24,1);
  --ex-motion-spring:cubic-bezier(.2,1.05,.35,1);
}
.ex-classroom{
  min-height:100vh;
  min-height:100dvh;
  background:radial-gradient(circle at 50% 45%,rgba(86,116,235,.20),transparent 28%),linear-gradient(180deg,#050711,#080d20);
  overflow-x:clip;
  overflow-y:visible;
}
.ex-class-header{
  position:sticky;
  top:0;
  z-index:50;
  min-height:var(--ex-header);
  display:grid;
  grid-template-columns:minmax(190px,280px) minmax(0,1fr) minmax(145px,220px);
  align-items:center;
  gap:clamp(12px,2vw,28px);
  padding:clamp(14px,1.8vw,22px) clamp(16px,3vw,48px);
  border-bottom:1px solid var(--ex-line);
  background:rgba(4,5,13,.94);
  backdrop-filter:blur(18px);
  isolation:isolate;
}
.ex-class-header>*{min-width:0}
.ex-teacher-wrap{
  position:relative;
  min-height:calc(100vh - var(--ex-header));
  min-height:calc(100dvh - var(--ex-header));
  padding:clamp(24px,3vw,44px) max(92px,6vw) 116px;
}
.ex-teacher-stage{
  width:min(1390px,100%);
  min-height:min(720px,calc(100vh - var(--ex-header) - 70px));
  min-height:min(720px,calc(100dvh - var(--ex-header) - 70px));
  margin:0 auto;
  position:relative;
  display:grid;
  grid-template-rows:auto minmax(160px,auto) auto;
  border:1px solid rgba(155,220,255,.26);
  border-radius:36px;
  background:radial-gradient(circle at 50% 48%,transparent 0 15%,rgba(155,220,255,.08) 15.2% 15.5%,transparent 15.8% 28%,rgba(155,220,255,.065) 28.2% 28.5%,transparent 28.8% 42%,rgba(155,220,255,.055) 42.2% 42.5%,transparent 42.8%),linear-gradient(145deg,rgba(20,29,52,.92),rgba(6,8,20,.94));
  overflow:clip;
  box-shadow:var(--ex-shadow);
  contain:layout paint;
}
.ex-stage-body{
  min-width:0;
  min-height:160px;
  height:auto;
  max-height:none;
  padding:10px clamp(22px,6vw,86px) 28px;
  overflow:visible;
}
.ex-stage-nav{
  position:relative;
  inset:auto;
  z-index:12;
  width:100%;
  margin-top:14px;
  padding:16px clamp(18px,3vw,34px);
  display:grid;
  grid-template-columns:minmax(120px,auto) minmax(0,1fr) minmax(120px,auto);
  align-items:center;
  gap:14px;
  border-radius:0 0 35px 35px;
  background:linear-gradient(180deg,rgba(5,7,17,.12),rgba(5,7,17,.98) 35%);
  backdrop-filter:blur(14px);
}
.ex-stage-nav .ex-stage-dots{min-width:0;justify-self:center;max-width:100%;overflow-x:auto;overscroll-behavior-inline:contain}
.ex-stage-nav .ex-btn{max-width:100%;white-space:nowrap}
.ex-side-pill{
  position:fixed;
  z-index:55;
  min-height:54px;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:16px 13px;
  border:1px solid var(--ex-line);
  border-radius:999px;
  background:rgba(7,8,20,.94);
  color:var(--ex-text);
  box-shadow:0 12px 34px rgba(0,0,0,.35);
  font-weight:900;
  writing-mode:vertical-rl;
  white-space:nowrap;
  transition:transform var(--ex-motion-normal) var(--ex-motion-spring),box-shadow var(--ex-motion-normal) ease,filter var(--ex-motion-normal) ease;
}
.ex-pill-history{left:16px;top:38%}
.ex-pill-notes{left:16px;top:61%;background:linear-gradient(135deg,#efd35e,#ba931f);color:#161005}
.ex-pill-controls{right:16px;top:38%}
.ex-pill-mentor{right:16px;top:61%;background:linear-gradient(135deg,#6c91ff,#8fc1ff);color:#071020}
.ex-wizard-title{
  font-size:clamp(32px,3.6vw,50px);
  line-height:1.04;
  letter-spacing:-.042em;
  max-width:980px;
  margin:18px auto 14px;
  overflow-wrap:anywhere;
}
.ex-step-content{
  max-width:1180px;
  margin:28px auto 112px;
  text-align:left;
}
.ex-wizard-nav-inner{
  width:min(1180px,100%);
  display:grid;
  grid-template-columns:minmax(140px,1fr) minmax(260px,620px) minmax(140px,1fr);
  align-items:center;
  column-gap:18px;
}
.ex-add-row{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  align-items:stretch;
  gap:12px;
  margin-top:18px;
}
.ex-topic-tools{
  position:sticky;
  top:10px;
  z-index:8;
  display:grid;
  grid-template-columns:minmax(260px,1fr) auto auto;
  align-items:stretch;
  gap:12px;
  padding:10px;
  border:1px solid rgba(255,255,255,.08);
  border-radius:20px;
  background:rgba(5,7,18,.94);
  backdrop-filter:blur(16px);
}
.ex-custom-topic-row{
  grid-template-columns:minmax(180px,.45fr) minmax(260px,1fr) auto;
}
.ex-add-row>*{min-width:0;width:100%}
.ex-add-row>.ex-btn{width:auto}
.ex-drawer{
  position:fixed;
  z-index:80;
  top:0;
  bottom:0;
  width:min(520px,93vw);
  display:flex;
  flex-direction:column;
  background:#0b0819;
  border:1px solid var(--ex-line);
  box-shadow:0 0 80px rgba(0,0,0,.62);
  will-change:transform,opacity;
  transition:transform var(--ex-motion-normal) var(--ex-motion-ease),opacity var(--ex-motion-fast) ease;
}
.ex-drawer.left{left:0;transform:translate3d(-102%,0,0)}
.ex-drawer.right{right:0;transform:translate3d(102%,0,0)}
.ex-drawer.floating{
  left:32px;
  top:18vh;
  bottom:14vh;
  width:min(580px,90vw);
  border-radius:28px;
  transform:translate3d(0,24px,0) scale(.985);
  opacity:0;
}
.ex-drawer.open,.ex-drawer.ex-layer-open{transform:translate3d(0,0,0) scale(1);opacity:1}
.ex-drawer.ex-layer-closing{pointer-events:none}
.ex-drawer-backdrop{
  position:fixed;
  inset:0;
  z-index:70;
  background:rgba(2,3,9,.72);
  backdrop-filter:blur(7px);
  opacity:0;
  transition:opacity var(--ex-motion-fast) ease;
}
.ex-drawer-backdrop.open,.ex-drawer-backdrop.ex-layer-open{opacity:1}
.ex-drawer-backdrop.ex-layer-closing{opacity:0;pointer-events:none}
.ex-toast{
  position:fixed;
  z-index:110;
  right:28px;
  top:calc(var(--ex-header) + 20px);
  max-width:min(420px,calc(100vw - 32px));
  display:flex;
  align-items:flex-start;
  gap:14px;
  padding:17px 12px 17px 20px;
  border:1px solid var(--ex-line);
  border-radius:18px;
  background:#0b0819;
  box-shadow:0 20px 60px rgba(0,0,0,.55);
  opacity:0;
  transform:translate3d(0,-10px,0) scale(.985);
  transition:opacity var(--ex-motion-fast) ease,transform var(--ex-motion-normal) var(--ex-motion-spring);
}
.ex-toast.open,.ex-toast.ex-layer-open{opacity:1;transform:none}
.ex-toast.ex-layer-closing{opacity:0;transform:translate3d(0,-8px,0);pointer-events:none}
.ex-network-status{
  position:fixed;
  left:50%;
  bottom:20px;
  z-index:120;
  max-width:min(520px,calc(100vw - 28px));
  padding:10px 16px;
  border:1px solid var(--ex-line);
  border-radius:999px;
  background:rgba(9,11,25,.96);
  box-shadow:0 14px 42px rgba(0,0,0,.42);
  color:var(--ex-text);
  font-weight:800;
  text-align:center;
  opacity:0;
  transform:translate3d(-50%,14px,0);
  transition:opacity var(--ex-motion-fast) ease,transform var(--ex-motion-normal) var(--ex-motion-ease);
}
.ex-network-status.open,.ex-network-status.ex-layer-open{opacity:1;transform:translate3d(-50%,0,0)}
.ex-network-status.offline{border-color:rgba(255,182,73,.5)}
.ex-network-status.slow{border-color:rgba(142,186,255,.5)}
.ex-network-status.online{border-color:rgba(82,220,157,.5)}
.ex-motion-enter,.ex-motion-exit{
  transition:opacity var(--ex-motion-fast) ease,transform var(--ex-motion-normal) var(--ex-motion-ease);
  will-change:opacity,transform;
}
.ex-motion-enter{opacity:0}
.ex-motion-enter.ex-motion-forward{transform:translate3d(18px,0,0)}
.ex-motion-enter.ex-motion-back{transform:translate3d(-18px,0,0)}
.ex-motion-enter.ex-motion-up{transform:translate3d(0,18px,0)}
.ex-motion-enter.ex-motion-down{transform:translate3d(0,-18px,0)}
.ex-motion-enter.ex-motion-active{opacity:1;transform:none}
.ex-motion-exit{opacity:1;transform:none}
.ex-motion-exit.ex-motion-forward.ex-motion-active{opacity:0;transform:translate3d(-12px,0,0)}
.ex-motion-exit.ex-motion-back.ex-motion-active{opacity:0;transform:translate3d(12px,0,0)}
.ex-motion-exit.ex-motion-up.ex-motion-active{opacity:0;transform:translate3d(0,-12px,0)}
.ex-motion-exit.ex-motion-down.ex-motion-active{opacity:0;transform:translate3d(0,12px,0)}
.ex-swap-enter,.ex-swap-exit{transition:opacity 150ms ease,transform 180ms var(--ex-motion-ease);will-change:opacity,transform}
.ex-swap-exit{opacity:1;transform:none}
.ex-swap-exit.ex-swap-forward{opacity:0;transform:translate3d(-10px,0,0)}
.ex-swap-exit.ex-swap-back{opacity:0;transform:translate3d(10px,0,0)}
.ex-swap-enter{opacity:0}
.ex-swap-enter.ex-swap-forward{transform:translate3d(10px,0,0)}
.ex-swap-enter.ex-swap-back{transform:translate3d(-10px,0,0)}
.ex-swap-enter.ex-motion-active{opacity:1;transform:none}
.ex-btn,.ex-card-button,.ex-pill,.ex-tag,:where(.ex-side-pill),.ex-check{
  transition:transform var(--ex-motion-fast) var(--ex-motion-spring),border-color var(--ex-motion-fast) ease,background-color var(--ex-motion-fast) ease,box-shadow var(--ex-motion-normal) ease,filter var(--ex-motion-fast) ease;
}
.ex-btn:not(:disabled):active,.ex-card-button:not(:disabled):active,.ex-pill:not(:disabled):active,.ex-tag:not(:disabled):active,.ex-side-pill:not(:disabled):active{transform:translateY(1px) scale(.985)}
.ex-btn[aria-busy="true"]{cursor:progress;filter:saturate(.8)}
.ex-selection-pulse{animation:exSelectionPulse 340ms var(--ex-motion-spring)}
@keyframes exSelectionPulse{0%{transform:scale(1)}45%{transform:scale(1.018);box-shadow:0 0 0 5px rgba(139,176,255,.12)}100%{transform:scale(1)}}
.ex-card-button,.ex-topic-card,.ex-dashboard-room,.ex-time-block{content-visibility:auto;contain-intrinsic-size:120px}
.ex-decision-overlay,.ex-complete-overlay,.ex-tutorial{
  opacity:0;
  transition:opacity var(--ex-motion-fast) ease;
}
.ex-decision-overlay.open,.ex-decision-overlay.ex-layer-open,.ex-complete-overlay.open,.ex-complete-overlay.ex-layer-open,.ex-tutorial.open,.ex-tutorial.ex-layer-open{opacity:1}
.ex-decision-overlay.ex-layer-closing,.ex-complete-overlay.ex-layer-closing,.ex-tutorial.ex-layer-closing{opacity:0;pointer-events:none}
.ex-tutorial-spot{transition:left var(--ex-motion-normal) var(--ex-motion-ease),top var(--ex-motion-normal) var(--ex-motion-ease),width var(--ex-motion-normal) var(--ex-motion-ease),height var(--ex-motion-normal) var(--ex-motion-ease)}
.ex-tutorial-card{transition:left var(--ex-motion-normal) var(--ex-motion-ease),top var(--ex-motion-normal) var(--ex-motion-ease),transform var(--ex-motion-normal) var(--ex-motion-spring)}
#examTeacherStage{scroll-margin-top:calc(var(--ex-header) + 18px)}
@media (hover:hover) and (pointer:fine){
  .ex-btn:not(:disabled):hover,.ex-card-button:not(:disabled):hover,.ex-pill:not(:disabled):hover,.ex-tag:not(:disabled):hover,.ex-side-pill:not(:disabled):hover{transform:translateY(-2px)}
  .ex-side-pill:hover{filter:brightness(1.08);box-shadow:0 16px 42px rgba(0,0,0,.45)}
}
@media (max-width:1050px){
  .ex-class-header{grid-template-columns:minmax(150px,210px) minmax(0,1fr) minmax(120px,165px);gap:12px}
  .ex-teacher-wrap{padding-inline:max(72px,4vw)}
  .ex-side-pill{font-size:12px;padding:14px 10px}
  .ex-pill-history,.ex-pill-controls{top:39%}
  .ex-pill-notes,.ex-pill-mentor{top:63%}
}
@media (max-width:760px){
  :root{--ex-header:122px}
  .ex-class-header{
    grid-template-columns:44px minmax(0,1fr) minmax(78px,auto);
    gap:8px;
    padding:10px 10px;
  }
  .ex-class-header .ex-brand-copy{display:none}
  .ex-class-header .ex-brand img{width:42px;height:42px}
  .ex-header-progress{min-width:0}
  .ex-header-progress-top{min-width:0;gap:8px}
  .ex-current-block{min-width:0}
  .ex-current-block strong{display:block;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .ex-header-chips{min-width:0;display:flex;gap:4px;overflow:hidden}
  .ex-header-chip{min-width:0;padding:5px 7px;font-size:9px;white-space:nowrap}
  .ex-header-chip:nth-child(3){display:none}
  .ex-bp{max-width:98px;padding:9px 8px;font-size:10px;overflow:hidden}
  .ex-bp span:last-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .ex-teacher-wrap{min-height:calc(100dvh - var(--ex-header));padding:18px 10px 180px}
  .ex-teacher-stage{min-height:calc(100dvh - var(--ex-header) - 32px);border-radius:24px;grid-template-rows:auto minmax(140px,auto) auto}
  .ex-stage-body{padding:8px 18px 20px}
  .ex-stage-nav{grid-template-columns:minmax(88px,auto) minmax(0,1fr) minmax(88px,auto);gap:7px;margin:8px 8px 10px;width:auto;padding:11px 10px;border-radius:18px}
  .ex-stage-nav .ex-btn{min-width:0;padding-inline:10px;font-size:12px}
  .ex-stage-dots{max-width:34vw}
  .ex-side-pill{
    width:calc(50vw - 14px);
    min-height:48px;
    padding:0 10px;
    writing-mode:horizontal-tb;
    font-size:12px;
    overflow:hidden;
    text-overflow:ellipsis;
  }
  .ex-pill-history{left:8px;top:auto;bottom:76px}
  .ex-pill-controls{right:8px;top:auto;bottom:76px}
  .ex-pill-notes{left:8px;top:auto;bottom:18px}
  .ex-pill-mentor{right:8px;top:auto;bottom:18px}
  .ex-wizard-title{font-size:clamp(30px,8.6vw,40px);line-height:1.08;margin:14px auto 10px}
  .ex-step-content{margin:20px auto 130px}
  .ex-wizard-nav-inner{grid-template-columns:64px minmax(0,1fr) 64px;column-gap:6px}
  .ex-wizard-nav .ex-btn{min-width:0;padding-inline:8px;font-size:12px;overflow:hidden;text-overflow:ellipsis}
  .ex-add-row,.ex-topic-tools,.ex-custom-topic-row{position:static;grid-template-columns:minmax(0,1fr);gap:10px}
  .ex-add-row>.ex-btn{width:100%}
  .ex-drawer{width:min(520px,94vw)}
  .ex-drawer.floating{left:8px;right:8px;top:auto;bottom:8px;width:auto;height:min(76dvh,720px);border-radius:24px;transform:translate3d(0,28px,0) scale(.985)}
  .ex-toast{left:12px;right:12px;top:auto;bottom:calc(132px + env(safe-area-inset-bottom));max-width:none}
  .ex-network-status{bottom:calc(132px + env(safe-area-inset-bottom))}
}
@media (max-width:380px){
  .ex-class-header{grid-template-columns:38px minmax(0,1fr) 72px;padding-inline:7px}
  .ex-class-header .ex-brand img{width:36px;height:36px}
  .ex-progress-number{font-size:23px}
  .ex-current-block small{font-size:9px}
  .ex-current-block strong{font-size:11px}
  .ex-bp{max-width:72px;padding-inline:6px}
  .ex-side-pill{font-size:11px}
  .ex-stage-nav{grid-template-columns:76px minmax(0,1fr) 76px}
  .ex-stage-nav .ex-btn{font-size:11px;padding-inline:6px}
}
@media (prefers-reduced-motion:reduce){
  :root{--ex-motion-fast:0ms;--ex-motion-normal:0ms;--ex-motion-slow:0ms}
  *,*::before,*::after{scroll-behavior:auto!important;animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
}
@media print{
  .ex-class-header,.ex-side-pill,.ex-stage-nav,.ex-drawer-backdrop{display:none!important}
  .ex-drawer{position:static;width:100%;border:0;box-shadow:none;color:#111;background:#fff;transform:none!important;opacity:1!important}
  .ex-drawer-body{overflow:visible}
}


/* EXAM MODE V6 UX OWNER: topic discovery, fully-clickable cards, room lifecycle */
.ex-topic-custom-panel{display:grid;grid-template-columns:minmax(210px,.42fr) minmax(0,1fr);gap:18px;align-items:end;margin:0 0 16px;padding:18px;border:1px solid var(--ex-line);border-radius:22px;background:linear-gradient(145deg,rgba(104,139,255,.11),rgba(255,255,255,.035))}
.ex-topic-custom-panel strong{display:block;font-size:17px}.ex-topic-custom-panel p{margin:.4rem 0 0}
.ex-subject-group{padding:18px;border:1px solid rgba(255,255,255,.075);border-radius:24px;background:rgba(255,255,255,.025)}
.ex-subject-group-head{display:grid;grid-template-columns:minmax(150px,.28fr) minmax(0,1fr);gap:16px;align-items:end;margin-bottom:14px}
.ex-subject-group-head h3{margin:0 0 5px}.ex-subject-selection-count{font-size:12px;color:var(--ex-muted);font-weight:750}
.ex-subject-topic-tools{display:grid;grid-template-columns:minmax(180px,1fr) minmax(150px,.48fr) auto auto;gap:9px;align-items:stretch}
.ex-subject-topic-tools .ex-input,.ex-subject-topic-tools .ex-select{min-height:46px;padding:10px 13px;border-radius:14px}
.ex-subject-topic-tools .ex-btn{min-height:46px;padding-inline:13px;white-space:nowrap}
.ex-topic-card,.ex-dashboard-room[data-room-card],.ex-recent-room[data-resume-room]{cursor:pointer}
.ex-topic-card:focus-visible,.ex-dashboard-room[data-room-card]:focus-visible,.ex-recent-room[data-resume-room]:focus-visible{outline:3px solid rgba(155,220,255,.72);outline-offset:3px}
.ex-topic-card[hidden]{display:none!important}.ex-subject-empty{margin:14px 2px 0}
.ex-dashboard-room[data-room-card],.ex-recent-room[data-resume-room]{transition:transform var(--ex-motion-fast) var(--ex-motion-ease),border-color var(--ex-motion-fast) ease,background var(--ex-motion-fast) ease}
.ex-dashboard-room[data-room-card]:hover,.ex-recent-room[data-resume-room]:hover{transform:translateY(-3px);border-color:rgba(155,220,255,.42);background:rgba(104,139,255,.09)}
.ex-dashboard-room .ex-card-actions{position:relative;z-index:2}
@media(max-width:1050px){.ex-subject-group-head{grid-template-columns:1fr}.ex-subject-topic-tools{grid-template-columns:minmax(0,1fr) minmax(140px,.5fr) auto auto}}
@media(max-width:760px){.ex-topic-custom-panel{grid-template-columns:1fr}.ex-subject-group{padding:13px}.ex-subject-topic-tools{grid-template-columns:1fr 1fr}.ex-subject-topic-tools .ex-input{grid-column:1/-1}.ex-subject-topic-tools .ex-btn{width:100%}}
@media(max-width:430px){.ex-subject-topic-tools{grid-template-columns:1fr}.ex-subject-topic-tools .ex-input{grid-column:auto}}

/* EXAM MODE V6.2 OWNER: adaptive college/custom and Fast Rescue setup flows */
.ex-flow-note,.ex-reference-led-banner,.ex-rescue-summary{display:grid;gap:6px;margin:18px 0;padding:17px 19px;border:1px solid rgba(155,220,255,.24);border-radius:20px;background:linear-gradient(145deg,rgba(104,139,255,.12),rgba(255,255,255,.035));text-align:left}
.ex-flow-note strong,.ex-reference-led-banner strong,.ex-rescue-summary strong{font-size:17px;color:var(--ex-text)}
.ex-flow-note span,.ex-reference-led-banner span,.ex-rescue-summary span{color:var(--ex-muted);line-height:1.5}
.ex-reference-led-banner{margin-top:0;border-color:rgba(240,202,80,.28);background:linear-gradient(145deg,rgba(240,202,80,.11),rgba(104,139,255,.055))}
.ex-reference-led-banner.fast{border-color:rgba(155,220,255,.34);background:linear-gradient(145deg,rgba(104,139,255,.17),rgba(155,220,255,.055))}
.ex-fast-source-grid .ex-card-button{min-height:160px}
.ex-fast-subject-grid{grid-template-columns:repeat(4,minmax(0,1fr));margin-top:16px}
.ex-fast-subject-grid .ex-card-button{min-height:98px;padding:18px}
.ex-fast-subject-grid .ex-card-button strong{font-size:18px;padding-right:24px}
.ex-fast-add-subject{margin-bottom:12px}
.ex-fast-selected-subjects,.ex-fast-topic-list{margin-top:12px;margin-bottom:18px}
.ex-fast-selected-subjects .ex-pill,.ex-fast-topic-list .ex-pill{max-width:100%;white-space:normal;text-align:left;line-height:1.25;padding-block:9px}
.ex-fast-topic-entry{margin-top:14px;text-align:left}
.ex-fast-topic-entry .ex-add-row{grid-template-columns:minmax(160px,.38fr) minmax(240px,1fr) auto}
.ex-fast-topic-entry p{margin:10px 0 0}
.ex-fast-date-grid{align-items:stretch}
.ex-rescue-summary{margin:0;align-content:center;min-height:100%}
@media(max-width:1050px){.ex-fast-subject-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:760px){.ex-fast-source-grid .ex-card-button{min-height:124px}.ex-fast-subject-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.ex-fast-topic-entry .ex-add-row{grid-template-columns:1fr}.ex-fast-topic-entry .ex-btn{width:100%}}
@media(max-width:390px){.ex-fast-subject-grid{grid-template-columns:1fr}.ex-fast-subject-grid .ex-card-button{min-height:88px}}

/* ===== Exam Mode V6.3 · Student Dashboard + Unified Teacher ===== */
:root{--ex-dash-bg:#04070c;--ex-dash-surface:#09111f;--ex-dash-surface-2:#0d1728;--ex-dash-blue:#74a8ff;--ex-dash-blue-2:#315fda;--ex-dash-gold:#d4af37;--ex-dash-gold-soft:#f4e4a6;--ex-dash-border:rgba(129,170,235,.22);--ex-dash-muted:rgba(229,237,251,.64)}
.ex-svg{width:1.15em;height:1.15em;display:block;flex:0 0 auto}
.ex-dashboard{min-height:100vh;background:radial-gradient(circle at 70% -10%,rgba(35,87,190,.22),transparent 35%),linear-gradient(145deg,#03060b,#060b15 55%,#020409);color:#f7f8fb;overflow:visible}
.ex-dash-shell{min-height:100vh;display:grid;grid-template-columns:238px minmax(0,1fr)}
.ex-dash-sidebar{position:sticky;top:0;height:100vh;padding:22px 14px;border-right:1px solid rgba(212,175,55,.28);background:linear-gradient(180deg,rgba(7,13,24,.98),rgba(3,7,13,.98));display:flex;flex-direction:column;gap:24px;z-index:8}
.ex-dash-brand{display:flex;align-items:center;gap:12px;padding:8px 10px;color:#fff;text-decoration:none}.ex-dash-brand img{width:48px;height:48px;object-fit:contain}.ex-dash-brand span{display:flex;flex-direction:column}.ex-dash-brand strong{font-family:Georgia,serif;color:var(--ex-dash-gold-soft);font-size:18px}.ex-dash-brand small{color:var(--ex-dash-muted);font-size:12px}
.ex-dash-nav{display:grid;gap:7px}.ex-dash-nav button{position:relative;width:100%;display:flex;align-items:center;gap:12px;border:0;border-radius:13px;padding:12px 13px;background:transparent;color:rgba(243,247,255,.72);font:700 14px/1.2 inherit;cursor:pointer;text-align:left;transition:transform .18s ease,background .18s ease,color .18s ease}.ex-dash-nav button:hover{background:rgba(116,168,255,.08);color:#fff;transform:translateX(2px)}.ex-dash-nav button.active{color:var(--ex-dash-gold-soft);background:linear-gradient(90deg,rgba(212,175,55,.15),rgba(54,103,212,.12));box-shadow:inset 3px 0 var(--ex-dash-gold),0 0 24px rgba(48,100,220,.09)}
.ex-dash-private{margin-top:auto;padding:14px;border:1px solid rgba(116,168,255,.16);border-radius:16px;background:rgba(116,168,255,.05);display:grid;grid-template-columns:auto 1fr;gap:4px 9px}.ex-dash-private .ex-svg{color:var(--ex-dash-blue)}.ex-dash-private strong{font-size:12px}.ex-dash-private small{grid-column:2;color:var(--ex-dash-muted);font-size:10px;line-height:1.45}
.ex-dash-main{min-width:0;padding:18px 22px 34px}.ex-dash-topbar{display:grid;grid-template-columns:minmax(220px,.9fr) minmax(260px,1.15fr) auto;gap:16px;align-items:center;min-height:68px;margin-bottom:17px}.ex-dash-greeting{display:flex;flex-direction:column;min-width:0}.ex-dash-greeting strong{font-size:16px}.ex-dash-greeting span{color:var(--ex-dash-muted);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.ex-dash-global-search,.ex-search-box{display:flex;align-items:center;gap:9px;border:1px solid var(--ex-dash-border);background:rgba(4,9,18,.74);border-radius:12px;padding:0 12px;color:var(--ex-dash-muted)}.ex-dash-global-search input,.ex-search-box input{min-width:0;width:100%;height:42px;border:0;outline:0;background:transparent;color:#fff;font:500 13px inherit}.ex-dash-metrics{display:flex;align-items:center;justify-content:flex-end;gap:8px}.ex-metric-pill,.ex-icon-label-btn{height:42px;border:1px solid var(--ex-dash-border);border-radius:12px;background:linear-gradient(180deg,rgba(16,28,48,.92),rgba(6,12,22,.92));color:#fff;display:flex;align-items:center;gap:7px;padding:0 11px;cursor:pointer;white-space:nowrap}.ex-metric-pill strong,.ex-icon-label-btn strong{font-size:11px}.ex-metric-special{width:18px;height:22px;object-fit:contain}.ex-metric-special.trophy{filter:drop-shadow(0 0 5px rgba(212,175,55,.4))}.ex-dash-flame{width:19px;height:26px;overflow:visible}.ex-dash-flame .flame-outer{transform-origin:50% 100%;animation:exDashFlame 1.5s ease-in-out infinite}.ex-dash-flame .flame-inner{transform-origin:50% 100%;animation:exDashFlameInner 1s ease-in-out infinite}@keyframes exDashFlame{0%,100%{transform:scale(1)}45%{transform:scale(.96,1.06) skewX(2deg)}75%{transform:scale(1.04,.97) skewX(-2deg)}}@keyframes exDashFlameInner{0%,100%{transform:scale(1)}50%{transform:scale(.9,1.08) translateX(1px)}}
.ex-dash-panel{min-width:0}.ex-dash-overview,.ex-dash-page{display:grid;gap:16px}.ex-dash-hero{position:relative;min-height:190px;padding:28px 30px;border:1px solid rgba(80,139,249,.44);border-radius:20px;overflow:hidden;background:radial-gradient(circle at 82% 20%,rgba(43,92,202,.35),transparent 34%),linear-gradient(120deg,#081326 0%,#07101f 52%,#0d1930 100%);box-shadow:0 22px 70px rgba(0,0,0,.25);display:flex;align-items:center;justify-content:space-between;gap:24px}.ex-dash-hero:after{content:"";position:absolute;inset:auto -5% -40% 34%;height:120px;border-top:1px solid rgba(212,175,55,.48);border-radius:50%;box-shadow:0 -16px 0 rgba(64,120,241,.16),0 -32px 0 rgba(212,175,55,.13);transform:rotate(-5deg)}.ex-dash-hero-copy{position:relative;z-index:1;max-width:720px}.ex-dash-hero h1{font:800 clamp(28px,3vw,43px)/1.02 Georgia,serif;margin:5px 0 10px;color:#fff}.ex-dash-hero p{color:rgba(236,242,255,.75);max-width:620px;line-height:1.55}.ex-dash-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:17px}.ex-dash-actions .ex-btn{display:inline-flex;align-items:center;justify-content:center;gap:7px}.ex-dash-countdown{position:relative;z-index:1;min-width:165px;padding:20px;border:1px solid rgba(212,175,55,.42);border-radius:17px;background:rgba(5,10,18,.75);box-shadow:0 0 35px rgba(212,175,55,.08);display:flex;align-items:center;gap:13px;color:var(--ex-dash-gold-soft)}.ex-dash-countdown .ex-svg{width:32px;height:32px}.ex-dash-countdown span{font:800 17px/1.25 Georgia,serif}
.ex-dash-stat-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}.ex-dash-stat{min-height:146px;padding:15px;border:1px solid var(--ex-dash-border);border-radius:16px;background:linear-gradient(180deg,rgba(13,25,45,.92),rgba(6,13,24,.94));display:flex;flex-direction:column;justify-content:space-between;min-width:0}.ex-dash-stat-head{display:flex;align-items:center;gap:8px;color:rgba(245,248,255,.82);font-size:11px;font-weight:700}.ex-dash-stat-head .ex-svg{color:var(--ex-dash-blue)}.ex-dash-stat-value{font-size:25px}.ex-dash-stat small{color:var(--ex-dash-muted);font-size:10px;line-height:1.4}.ex-dash-ring{--progress:0%;align-self:center;width:72px;height:72px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(var(--ex-dash-blue) var(--progress),rgba(255,255,255,.07) 0);position:relative}.ex-dash-ring:before{content:"";position:absolute;inset:7px;border-radius:50%;background:#091321}.ex-dash-ring strong{position:relative;font-size:18px}
.ex-dash-lower{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:16px;align-items:start}.ex-dash-card,.ex-dash-classroom-section,.ex-settings-card{border:1px solid var(--ex-dash-border);border-radius:17px;background:linear-gradient(180deg,rgba(10,21,38,.94),rgba(5,11,21,.96));padding:16px;min-width:0}.ex-dash-classroom-section{padding:18px}.ex-dash-rail{display:grid;gap:13px}.ex-dash-section-head{display:flex;justify-content:space-between;align-items:flex-start;gap:15px;margin-bottom:13px}.ex-dash-section-head h2{margin:0;font:800 18px/1.2 Georgia,serif}.ex-dash-section-head p{margin:4px 0 0;color:var(--ex-dash-muted);font-size:11px}.ex-link-btn{border:0;background:transparent;color:var(--ex-dash-blue);display:flex;align-items:center;gap:2px;cursor:pointer;font-weight:700;font-size:11px}.ex-link-btn .ex-svg{width:14px}
.ex-room-toolbar{display:grid;grid-template-columns:minmax(0,1fr) minmax(220px,340px) auto;gap:12px;align-items:center;margin-bottom:14px}.ex-room-toolbar.compact{grid-template-columns:minmax(0,1fr) minmax(190px,300px)}.ex-room-filters{display:flex;align-items:center;gap:7px;overflow-x:auto;padding:2px 0;scrollbar-width:none}.ex-room-filters::-webkit-scrollbar{display:none}.ex-filter-chip{border:1px solid transparent;background:transparent;color:rgba(239,244,255,.65);border-radius:999px;padding:7px 10px;font:700 10px inherit;cursor:pointer;white-space:nowrap}.ex-filter-chip.active{border-color:rgba(78,140,255,.62);background:rgba(55,112,227,.14);color:#a9c9ff;box-shadow:0 0 15px rgba(49,104,220,.12)}
.ex-room-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.ex-room-card{position:relative;min-width:0;padding:15px;border:1px solid var(--ex-dash-border);border-radius:15px;background:linear-gradient(145deg,rgba(15,29,50,.92),rgba(6,13,24,.95));cursor:pointer;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}.ex-room-card:hover{transform:translateY(-2px);border-color:rgba(104,161,255,.5);box-shadow:0 14px 28px rgba(0,0,0,.24)}.ex-room-card-top,.ex-room-identity,.ex-room-progress-meta,.ex-room-meta,.ex-room-card-actions,.ex-project-card-top,.ex-project-stats,.ex-project-classroom-head{display:flex;align-items:center}.ex-room-card-top{justify-content:space-between;gap:10px}.ex-room-identity{gap:10px;min-width:0}.ex-room-identity>div{min-width:0}.ex-room-identity h3{font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin:0 0 5px}.ex-subject-orb{width:37px;height:37px;border-radius:12px;display:grid;place-items:center;background:rgba(79,137,252,.14);color:#8cb9ff;border:1px solid rgba(79,137,252,.28);font-weight:900}.ex-subject-orb.fast{background:rgba(255,140,45,.13);color:#ffab58}.ex-subject-orb.college,.ex-subject-orb.project{background:rgba(212,175,55,.12);color:var(--ex-dash-gold-soft)}.ex-room-badges{display:flex;gap:5px;min-width:0;overflow:hidden}.ex-room-badge{display:inline-block;max-width:130px;padding:3px 7px;border-radius:999px;background:rgba(70,131,250,.14);color:#9ec3ff;font:700 9px inherit;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.ex-room-badge.project{background:rgba(212,175,55,.12);color:var(--ex-dash-gold-soft)}.ex-icon-btn{width:34px;height:34px;display:inline-grid;place-items:center;flex:0 0 auto;border:1px solid rgba(255,255,255,.12);border-radius:10px;background:rgba(255,255,255,.035);color:#eff4ff;cursor:pointer}.ex-icon-btn:hover{background:rgba(116,168,255,.12);border-color:rgba(116,168,255,.35)}.ex-room-progress-meta{justify-content:space-between;margin:16px 0 7px}.ex-room-progress-meta strong{font-size:13px;color:#a9c9ff}.ex-room-progress-meta span,.ex-room-meta,.ex-room-next{color:var(--ex-dash-muted);font-size:9px}.ex-room-next{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin:11px 0}.ex-room-meta{justify-content:space-between;gap:8px;margin:9px 0 13px}.ex-room-card-actions{justify-content:space-between;gap:8px}.ex-room-card-actions .ex-btn{display:flex;gap:5px;align-items:center}
.ex-recommend-list,.ex-attention-list{display:grid;gap:7px}.ex-recommend-row,.ex-attention-row{width:100%;display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:9px;padding:9px;border:0;border-radius:11px;background:rgba(255,255,255,.035);color:#fff;text-align:left;cursor:pointer}.ex-recommend-row:hover,.ex-attention-row:hover{background:rgba(116,168,255,.09)}.ex-recommend-row>span{display:flex;flex-direction:column;min-width:0}.ex-recommend-row strong{font-size:10px}.ex-recommend-row small,.ex-attention-row small{color:var(--ex-dash-muted);font-size:8px}.ex-attention-row{grid-template-columns:minmax(0,1fr) 70px auto}.ex-mini-bar{height:5px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden}.ex-mini-bar i{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,#ff684f,#f8bd39)}.ex-rank-card{text-align:center;position:relative;overflow:hidden}.ex-rank-card>.ex-metric-special{width:38px;height:45px;margin:auto}.ex-rank-number{display:block;font-size:34px;color:var(--ex-dash-gold-soft);margin:4px}.ex-rank-card p{color:var(--ex-dash-muted);font-size:10px}.ex-rank-card .ex-dash-actions{justify-content:center}
.ex-segmented{display:flex;gap:4px;padding:4px;border:1px solid var(--ex-dash-border);border-radius:12px;background:rgba(0,0,0,.25)}.ex-segmented button{border:0;border-radius:8px;background:transparent;color:var(--ex-dash-muted);padding:8px 14px;font:700 11px inherit;cursor:pointer}.ex-segmented button.active{background:linear-gradient(135deg,rgba(64,118,230,.28),rgba(212,175,55,.12));color:#fff}.ex-project-view{display:grid;gap:13px}.ex-project-toolbar{display:flex;justify-content:flex-end}.ex-project-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}.ex-project-card{padding:17px;border:1px solid var(--ex-dash-border);border-radius:16px;background:linear-gradient(145deg,rgba(15,29,50,.92),rgba(7,13,23,.96));cursor:pointer}.ex-project-card-top{gap:12px}.ex-project-card-top>.ex-svg{width:38px;height:38px;color:var(--ex-dash-gold)}.ex-project-card-top>div{min-width:0;flex:1}.ex-project-card h3{margin:0 0 4px;font-size:15px}.ex-project-card p,.ex-project-stats{color:var(--ex-dash-muted);font-size:10px}.ex-project-stats{justify-content:space-between;gap:10px;margin:18px 0}
.ex-library-toolbar{display:flex;justify-content:flex-end}.ex-library-toolbar .ex-search-box{max-width:360px;width:100%}.ex-library-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}.ex-library-card{padding:17px;border:1px solid var(--ex-dash-border);border-radius:16px;background:linear-gradient(145deg,rgba(15,29,50,.9),rgba(6,12,22,.96));min-width:0}.ex-library-card>h3{font-size:15px;margin:11px 0 7px}.ex-library-card>small{display:block;color:var(--ex-dash-muted);font-size:9px;margin:10px 0}.ex-library-preview{height:68px;color:rgba(239,244,255,.68);font-size:10px;line-height:1.5;overflow:hidden}.ex-library-card.paper>.ex-svg{color:var(--ex-dash-gold);width:30px;height:30px}.ex-card-actions{display:flex;align-items:center;gap:8px}.ex-empty-state{grid-column:1/-1;min-height:190px;display:grid;place-items:center;align-content:center;text-align:center;gap:10px;padding:25px;border:1px dashed rgba(116,168,255,.28);border-radius:16px;background:rgba(116,168,255,.03)}.ex-empty-state>.ex-svg{width:36px;height:36px;color:var(--ex-dash-blue)}.ex-empty-state h3,.ex-empty-state p{margin:0}.ex-empty-state p{color:var(--ex-dash-muted);max-width:470px;font-size:11px}
.ex-settings-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}.ex-settings-card h3{margin:0}.ex-settings-card>p{color:var(--ex-dash-muted);font-size:11px}.ex-setting-row{display:flex;justify-content:space-between;align-items:center;padding:11px 0;border-top:1px solid rgba(255,255,255,.06);font-size:12px}.ex-setting-row input{accent-color:var(--ex-dash-gold);width:18px;height:18px}
.ex-context-menu{position:fixed;z-index:2147483000;width:170px;padding:6px;border:1px solid var(--ex-dash-border);border-radius:12px;background:#08111e;box-shadow:0 18px 45px rgba(0,0,0,.55);display:grid;gap:3px}.ex-context-menu button{display:flex;align-items:center;gap:9px;width:100%;border:0;border-radius:8px;padding:9px;background:transparent;color:#eef4ff;text-align:left;cursor:pointer;font:600 11px inherit}.ex-context-menu button:hover{background:rgba(116,168,255,.1)}.ex-context-menu button.danger{color:#ff8d8d}
.ex-dashboard-modal{position:fixed;inset:0;z-index:2147482500;display:grid;place-items:center;padding:18px;background:rgba(0,0,0,.69);backdrop-filter:blur(8px)}.ex-dashboard-modal[hidden]{display:none!important}.ex-dashboard-modal-card{width:min(520px,96vw);max-height:min(88vh,820px);overflow:auto;padding:24px;border:1px solid rgba(212,175,55,.34);border-radius:20px;background:linear-gradient(180deg,#101724,#05090f);box-shadow:0 30px 90px rgba(0,0,0,.68)}.ex-dashboard-modal-card.wide{width:min(930px,96vw)}.ex-dashboard-modal-card>header{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;padding-bottom:15px;margin-bottom:18px;border-bottom:1px solid rgba(212,175,55,.18)}.ex-dashboard-modal-card h2{margin:0;font:800 25px/1.1 Georgia,serif}.ex-modal-fields{display:grid;gap:13px}.ex-modal-fields label{display:grid;gap:6px;color:var(--ex-dash-muted);font-size:11px}.ex-modal-fields textarea{min-height:90px;resize:vertical}.ex-dashboard-modal-card>.ex-btn{margin-top:17px}.ex-project-tabs{margin-bottom:15px;width:max-content}.ex-project-modal-content{display:grid;gap:14px}.ex-project-classroom-head{justify-content:space-between;gap:12px}.ex-project-classroom-head p{color:var(--ex-dash-muted)}.ex-source-upload{min-height:130px;border:1px dashed rgba(116,168,255,.42);border-radius:16px;background:rgba(116,168,255,.045);display:grid;place-items:center;align-content:center;gap:5px;text-align:center;cursor:pointer}.ex-source-upload>.ex-svg{width:30px;height:30px;color:var(--ex-dash-blue)}.ex-source-upload span{color:var(--ex-dash-muted);font-size:10px}.ex-source-upload input{display:none}.ex-source-list{display:grid;gap:8px}.ex-source-row{display:grid;grid-template-columns:auto minmax(0,1fr) auto auto;align-items:center;gap:10px;padding:11px;border:1px solid rgba(255,255,255,.08);border-radius:12px;background:rgba(255,255,255,.03)}.ex-source-row>.ex-svg{color:var(--ex-dash-blue)}.ex-source-row>div{display:flex;flex-direction:column;min-width:0}.ex-source-row strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:12px}.ex-source-row small{color:var(--ex-dash-muted);font-size:9px}.ex-source-priority{font-size:9px;color:var(--ex-dash-gold-soft)}
.ex-dashboard-modal-card.share{width:min(540px,96vw)}.ex-share-preview{padding:22px;border-radius:14px;background:radial-gradient(circle at 85% 10%,rgba(55,110,229,.24),transparent 45%),rgba(255,255,255,.035);min-height:130px}.ex-share-preview p{font-size:14px;color:#fff;line-height:1.5}.ex-share-preview strong{display:block;text-align:right;color:var(--ex-dash-gold-soft);font-family:Georgia,serif}.ex-share-privacy{color:var(--ex-dash-muted);font-size:10px;line-height:1.5}.ex-share-link{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:9px}.ex-share-targets{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;margin-top:18px}.ex-share-targets button{border:0;background:transparent;color:var(--ex-dash-muted);display:grid;place-items:center;gap:6px;font:600 9px inherit;cursor:pointer}.ex-share-targets span{width:43px;height:43px;border-radius:50%;display:grid;place-items:center;background:#fff;color:#101010;font-weight:900;font-size:15px}
.ex-global-note-editor{min-height:320px;padding:18px;border:1px solid var(--ex-dash-border);border-radius:14px;background:rgba(255,255,255,.035);white-space:pre-wrap;outline:none;line-height:1.65}.ex-paper-question{padding:14px;margin:10px 0;border:1px solid rgba(255,255,255,.09);border-radius:12px;background:rgba(255,255,255,.03)}.ex-paper-question p{margin:8px 0 0;color:var(--ex-dash-muted)}
.ex-teacher-context{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:12px}.ex-context-chip{padding:5px 8px;border-radius:999px;background:rgba(77,137,248,.12);border:1px solid rgba(77,137,248,.24);color:#a9c9ff;font-size:9px}.ex-context-chip.source{background:rgba(212,175,55,.11);border-color:rgba(212,175,55,.24);color:var(--ex-dash-gold-soft)}
.ex-shared-room-summary{max-width:920px;margin:40px auto}.ex-shared-room-summary h1{font-family:Georgia,serif}.ex-shared-room-summary>p{color:var(--ex-dash-muted)}
@media (max-width:1260px){.ex-dash-shell{grid-template-columns:205px minmax(0,1fr)}.ex-dash-main{padding-inline:16px}.ex-dash-topbar{grid-template-columns:220px minmax(220px,1fr)}.ex-dash-metrics{grid-column:1/-1;justify-content:flex-start;overflow-x:auto}.ex-dash-stat-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.ex-room-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.ex-dash-lower{grid-template-columns:minmax(0,1fr) 280px}}
@media (max-width:900px){.ex-dash-shell{display:block;padding-bottom:72px}.ex-dash-sidebar{position:fixed;inset:auto 0 0;height:64px;padding:6px 8px;border:1px solid rgba(116,168,255,.18);border-width:1px 0 0;background:rgba(4,9,17,.97);display:block;z-index:80}.ex-dash-brand,.ex-dash-private{display:none}.ex-dash-nav{height:100%;display:grid;grid-template-columns:repeat(6,1fr);gap:2px}.ex-dash-nav button{justify-content:center;flex-direction:column;gap:3px;padding:5px 2px;font-size:8px;border-radius:9px}.ex-dash-nav button.active{box-shadow:inset 0 2px var(--ex-dash-gold)}.ex-dash-main{padding:12px 12px 20px}.ex-dash-topbar{grid-template-columns:minmax(0,1fr) auto;gap:10px}.ex-dash-global-search{grid-column:1/-1;grid-row:2}.ex-dash-metrics{grid-column:2;grid-row:1;max-width:50vw;overflow-x:auto;justify-content:flex-start}.ex-metric-pill,.ex-icon-label-btn{height:37px;padding-inline:8px}.ex-metric-pill strong,.ex-icon-label-btn strong{font-size:9px}.ex-dash-lower{grid-template-columns:1fr}.ex-dash-rail{grid-template-columns:repeat(3,minmax(0,1fr))}.ex-dash-stat-grid{grid-template-columns:repeat(5,minmax(140px,1fr));overflow-x:auto;padding-bottom:4px}.ex-dash-stat{min-height:126px}.ex-project-grid,.ex-library-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.ex-dash-topbar{display:flex;flex-wrap:wrap;align-items:center}.ex-dash-greeting{flex:1 1 180px}.ex-dash-metrics{order:3;width:100%;max-width:none}.ex-dash-global-search{order:2;width:100%}.ex-icon-label-btn strong,.ex-dash-rank-extra{display:none}.ex-dash-hero{min-height:230px;display:grid;padding:21px}.ex-dash-hero h1{font-size:30px}.ex-dash-countdown{min-width:0;width:max-content;padding:11px 14px}.ex-dash-stat-grid{grid-template-columns:repeat(5,142px)}.ex-room-toolbar,.ex-room-toolbar.compact{display:flex;flex-wrap:wrap}.ex-room-filters{width:100%;order:2}.ex-search-box{flex:1 1 200px}.ex-room-grid,.ex-project-grid,.ex-library-grid,.ex-settings-grid{grid-template-columns:1fr}.ex-dash-rail{grid-template-columns:1fr}.ex-dash-section-head{align-items:center}.ex-dashboard-modal{padding:8px}.ex-dashboard-modal-card{padding:18px;border-radius:17px}.ex-share-targets{grid-template-columns:repeat(4,1fr)}.ex-source-row{grid-template-columns:auto minmax(0,1fr) auto}.ex-source-priority{display:none}.ex-project-classroom-head{align-items:flex-start;flex-direction:column}.ex-project-classroom-head .ex-btn{width:100%}.ex-dash-nav{grid-template-columns:repeat(6,1fr)}.ex-dash-nav button{font-size:7px}.ex-dash-nav .ex-svg{width:17px;height:17px}}
@media (max-width:360px){.ex-dash-main{padding-inline:8px}.ex-dash-hero{padding:17px}.ex-dash-hero h1{font-size:27px}.ex-dash-actions .ex-btn{flex:1 1 100%}.ex-share-targets{gap:3px}.ex-share-targets span{width:38px;height:38px}.ex-dash-nav button{font-size:6.5px}}
@media (prefers-reduced-motion:reduce){.ex-dash-flame .flame-outer,.ex-dash-flame .flame-inner{animation:none!important}.ex-room-card,.ex-dash-nav button{transition:none!important}}

/* V6.3 persisted dashboard and accessibility preferences */
html[data-exam-dash-density="compact"] .ex-room-card,
html[data-exam-dash-density="compact"] .ex-dash-stat,
html[data-exam-dash-density="compact"] .ex-library-card{padding:14px}
html[data-exam-dash-density="compact"] .ex-room-grid{gap:10px}
html[data-exam-larger-text="1"] .ex-teacher-stage{font-size:1.12rem}
html[data-exam-larger-controls="1"] .ex-btn,
html[data-exam-larger-controls="1"] .ex-icon-btn{min-height:46px;min-width:46px}
html[data-exam-high-contrast="1"] .ex-dash-card,
html[data-exam-high-contrast="1"] .ex-room-card,
html[data-exam-high-contrast="1"] .ex-dashboard-modal-card{border-color:rgba(244,228,166,.62)}
html[data-exam-focus-mode="1"] .ex-class-header .ex-header-chips,
html[data-exam-focus-mode="1"] .ex-pill-history,
html[data-exam-focus-mode="1"] .ex-pill-controls{display:none!important}
html[data-exam-reduced-motion="1"] *,
html[data-exam-reduced-motion="1"] *::before,
html[data-exam-reduced-motion="1"] *::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
.ex-search-results{display:grid;gap:14px;margin-top:22px}
.ex-search-results>h2{margin:0;font-size:1rem;color:#f4e4a6}
.ex-search-library{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px}
.ex-search-result-card{display:flex;align-items:center;gap:12px;text-align:left;padding:14px;border-radius:14px;border:1px solid rgba(139,178,255,.2);background:rgba(8,17,32,.72);color:#fff;cursor:pointer}
.ex-search-result-card:hover,.ex-search-result-card:focus-visible{border-color:rgba(139,178,255,.7);transform:translateY(-1px)}
.ex-search-result-card .ex-svg{width:24px;color:#8bb2ff;flex:0 0 auto}
.ex-search-result-card span{display:grid;gap:4px;min-width:0}
.ex-search-result-card small{color:rgba(255,255,255,.62);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ex-room-select{min-width:145px;max-width:190px}
@media(max-width:900px){.ex-room-toolbar .ex-room-select{flex:1 1 145px;max-width:none}}

/* ===== Exam Mode V6.4 · Minimal dashboard + responsive classroom ===== */
.ex-dashboard{height:100dvh;min-height:100vh;overflow:hidden}
.ex-dash-shell{height:100%;min-height:0;grid-template-columns:238px minmax(0,1fr);transition:grid-template-columns .24s ease}
.ex-dash-sidebar{height:100dvh;overflow-y:auto;overflow-x:hidden;transition:width .24s ease,padding .24s ease,transform .24s ease}
.ex-dash-main{height:100dvh;min-height:0;padding:0;display:grid;grid-template-rows:auto minmax(0,1fr);overflow:hidden}
.ex-dash-topbar{margin:0;padding:15px 22px;border-bottom:1px solid rgba(129,170,235,.14);background:rgba(4,9,17,.72);backdrop-filter:blur(18px);grid-template-columns:auto minmax(190px,.8fr) minmax(260px,1.25fr) auto;position:relative;z-index:12}
.ex-dash-sidebar-toggle{width:42px;height:42px;border:1px solid var(--ex-dash-border);border-radius:12px;background:rgba(11,23,42,.82);color:#fff;display:grid;place-items:center;font-size:18px;cursor:pointer}
.ex-dash-panel{min-height:0;overflow-y:auto;overflow-x:hidden;padding:22px;scrollbar-gutter:stable}
.ex-dash-panel::-webkit-scrollbar,.ex-dash-sidebar::-webkit-scrollbar{width:10px}.ex-dash-panel::-webkit-scrollbar-thumb,.ex-dash-sidebar::-webkit-scrollbar-thumb{background:rgba(116,168,255,.23);border-radius:99px;border:3px solid transparent;background-clip:padding-box}
html[data-exam-dash-sidebar="collapsed"] .ex-dash-shell{grid-template-columns:76px minmax(0,1fr)}
html[data-exam-dash-sidebar="collapsed"] .ex-dash-sidebar{padding-inline:9px}
html[data-exam-dash-sidebar="collapsed"] .ex-dash-brand{justify-content:center;padding-inline:0}
html[data-exam-dash-sidebar="collapsed"] .ex-dash-brand span,html[data-exam-dash-sidebar="collapsed"] .ex-dash-nav button>span+*,html[data-exam-dash-sidebar="collapsed"] .ex-dash-nav button{font-size:0}
html[data-exam-dash-sidebar="collapsed"] .ex-dash-brand img{width:42px;height:42px}
html[data-exam-dash-sidebar="collapsed"] .ex-dash-nav button{justify-content:center;padding:13px 8px}
html[data-exam-dash-sidebar="collapsed"] .ex-dash-nav .ex-svg{width:22px;height:22px}
.ex-dash-overview.minimal{display:grid;gap:18px;max-width:1600px;margin:0 auto}
.ex-minimal-welcome{min-height:260px;padding:clamp(24px,3vw,42px);display:grid;grid-template-columns:minmax(0,1.35fr) minmax(280px,.65fr);gap:24px;align-items:center;border:1px solid rgba(116,168,255,.2);border-radius:25px;background:radial-gradient(circle at 78% 12%,rgba(49,95,218,.3),transparent 36%),linear-gradient(135deg,rgba(11,24,44,.96),rgba(5,11,21,.96));box-shadow:0 24px 70px rgba(0,0,0,.25)}
.ex-minimal-welcome h1{margin:9px 0 12px;font:800 clamp(34px,4.5vw,62px)/.98 Georgia,serif;letter-spacing:-.045em}.ex-minimal-welcome p{max-width:780px;margin:0;color:var(--ex-dash-muted);font-size:clamp(13px,1.2vw,16px);line-height:1.65}.ex-minimal-welcome .ex-dash-actions{margin-top:23px}
.ex-current-learning{min-height:174px;padding:21px;border:1px solid rgba(212,175,55,.25);border-radius:20px;background:linear-gradient(145deg,rgba(212,175,55,.09),rgba(54,103,212,.09));display:flex;flex-direction:column;justify-content:center;gap:9px}.ex-current-learning>h2{margin:0;font-size:22px}.ex-current-learning>p{font-size:12px;line-height:1.5}.ex-current-learning>.ex-svg{width:34px;height:34px;color:var(--ex-dash-blue)}.ex-current-learning-meta{display:flex;gap:8px;flex-wrap:wrap}.ex-current-learning-meta span{padding:6px 9px;border:1px solid rgba(255,255,255,.08);border-radius:999px;color:var(--ex-dash-muted);font-size:10px}
.ex-identity-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.ex-identity-card{min-height:88px;padding:15px 18px;border:1px solid var(--ex-dash-border);border-radius:17px;background:linear-gradient(145deg,rgba(13,25,44,.92),rgba(5,11,21,.95));display:flex;align-items:center;gap:14px;color:#fff;text-align:left}.ex-identity-card[role],button.ex-identity-card{cursor:pointer}.ex-identity-icon{width:48px;height:48px;display:grid;place-items:center}.ex-identity-icon .ex-dash-flame{width:29px;height:40px}.ex-identity-icon .ex-metric-special{width:32px;height:38px}.ex-identity-copy{display:grid;gap:3px}.ex-identity-copy strong{font-size:20px}.ex-identity-copy small{color:var(--ex-dash-muted);font-size:10px}
.ex-minimal-classrooms{padding:20px;border:1px solid rgba(116,168,255,.14);border-radius:22px;background:rgba(5,11,21,.7)}
.ex-room-grid.minimal{grid-template-columns:repeat(3,minmax(0,1fr))}.ex-room-card.minimal{min-height:226px;padding:17px;display:flex;flex-direction:column}.ex-room-card.minimal .ex-room-focus{display:grid;gap:4px;margin:20px 0 15px;padding:13px;border-radius:13px;background:rgba(116,168,255,.055)}.ex-room-focus small{color:var(--ex-dash-muted);font-size:9px;text-transform:uppercase;letter-spacing:.09em}.ex-room-focus strong{font-size:14px;line-height:1.35}.ex-room-card.minimal .ex-room-meta{margin-top:auto}.ex-room-card.minimal .ex-room-card-actions{margin-top:14px}
.ex-library-toolbar.expanded{display:grid;grid-template-columns:minmax(240px,1fr) minmax(180px,280px);gap:10px;margin-bottom:16px}.ex-library-grid.notes{grid-template-columns:repeat(3,minmax(0,1fr))}.ex-library-card.note{display:flex;flex-direction:column;min-height:235px}.ex-note-card-top{display:flex;justify-content:space-between;align-items:center;gap:10px}.ex-note-card-top small{color:var(--ex-dash-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.ex-library-card.note .ex-card-actions{margin-top:auto}.ex-note-create-fields{display:grid;grid-template-columns:minmax(0,1fr) minmax(180px,.45fr);gap:10px;margin-bottom:12px}.ex-note-title-input{margin-bottom:12px}
.ex-account-actions{margin-top:18px}.ex-danger-row{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:15px 0;border-top:1px solid rgba(255,255,255,.07)}.ex-danger-row>span{display:grid;gap:4px}.ex-danger-row small{color:var(--ex-dash-muted);line-height:1.45}.ex-btn.danger{border-color:rgba(255,102,117,.42);background:rgba(255,72,91,.08);color:#ff9ba6}.ex-btn.danger:hover{background:rgba(255,72,91,.15)}
/* Classroom helpers are normal-flow horizontal controls, not vertical tabs. */
.ex-teacher-wrap{padding-bottom:34px}.ex-classroom-helpbar{width:min(1390px,100%);margin:14px auto 0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px;position:relative;z-index:24}.ex-help-button{min-height:54px;border:1px solid rgba(129,170,235,.22);border-radius:17px;background:rgba(10,18,34,.84);color:#eef5ff;display:flex;align-items:center;justify-content:center;gap:10px;font-weight:850;cursor:pointer;backdrop-filter:blur(14px);transition:transform .18s ease,border-color .18s ease,background .18s ease}.ex-help-button:hover{transform:translateY(-2px);border-color:rgba(116,168,255,.55);background:rgba(20,37,66,.9)}.ex-help-button.notes{border-color:rgba(212,175,55,.3)}.ex-help-button svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.ex-side-pill{writing-mode:horizontal-tb}.ex-pill-history,.ex-pill-controls{top:42%}
/* Dynamic header remains legible and fluid from wide desktop to narrow mobile. */
.ex-header-progress{min-width:0}.ex-header-progress-top{justify-content:flex-start;min-width:0}.ex-current-block{min-width:0;max-width:min(52vw,650px)}.ex-current-block strong{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.ex-class-header .ex-progress{width:100%;max-width:720px}.ex-header-chips{justify-content:flex-start}.ex-progress-number{font-variant-numeric:tabular-nums;min-width:82px}.ex-progress>span{transition:width .38s cubic-bezier(.2,.8,.2,1)}
/* Talk to Teacher is a translucent helping hand that floats above the lesson without masking it. */
.ex-drawer.helper{right:clamp(14px,2.2vw,34px);left:auto;top:auto;bottom:clamp(82px,9vh,112px);width:min(440px,calc(100vw - 28px));height:min(67dvh,650px);border-radius:28px;border:1px solid rgba(153,196,255,.32);background:linear-gradient(155deg,rgba(15,30,54,.72),rgba(5,11,22,.58));box-shadow:0 28px 90px rgba(0,0,0,.48),inset 0 1px rgba(255,255,255,.08);backdrop-filter:blur(24px) saturate(145%);-webkit-backdrop-filter:blur(24px) saturate(145%);transform:translate3d(28px,20px,0) scale(.97);opacity:0;overflow:hidden}.ex-drawer.helper.open,.ex-drawer.helper.ex-layer-open{transform:translate3d(0,0,0) scale(1);opacity:1}.ex-drawer.helper .ex-drawer-head{background:rgba(8,18,34,.35)}.ex-drawer.helper .ex-drawer-body{background:transparent}.ex-drawer.helper .ex-mentor-msg.assistant{background:rgba(255,255,255,.085)}.ex-drawer.helper .ex-mentor-msg.user{background:rgba(76,132,246,.18)}.ex-drawer.helper .ex-mentor-compose{background:rgba(4,10,20,.42);backdrop-filter:blur(15px)}
.ex-inline-learning-lab{overflow:hidden}.ex-inline-simulation-mount{display:grid;gap:16px}.ex-lab-controls{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.ex-lab-control{display:grid;grid-template-columns:1fr auto;gap:7px;padding:11px;border:1px solid rgba(255,255,255,.1);border-radius:13px;background:rgba(255,255,255,.035)}.ex-lab-control span{font-size:10px;color:var(--ex-muted)}.ex-lab-control input{grid-column:1/-1;width:100%;accent-color:var(--ex-cyan)}.ex-lab-control output{font-weight:900;color:var(--ex-cyan);font-size:11px}.ex-lab-result{display:grid;grid-template-columns:auto 1fr auto 1fr;gap:8px 12px;align-items:baseline;padding:16px;border-radius:15px;background:rgba(104,139,255,.08)}.ex-lab-result strong{font-size:22px;color:#fff}.ex-lab-result span{font-size:11px;color:var(--ex-muted)}.ex-lab-formula{display:block;padding:12px;border-radius:12px;background:rgba(0,0,0,.22);color:var(--ex-gold);text-align:center;font-size:15px}.ex-simulation-frame{border:0}
html[data-exam-line-spacing="1"] .ex-teach-slide p,html[data-exam-line-spacing="1"] .ex-teach-slide li,html[data-exam-line-spacing="1"] .ex-global-note-editor{line-height:1.9}
@media(max-width:1260px){.ex-dash-topbar{grid-template-columns:auto minmax(180px,.7fr) minmax(220px,1fr)}.ex-dash-metrics{grid-column:1/-1;justify-content:flex-end}.ex-room-grid.minimal,.ex-library-grid.notes{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:900px){.ex-dashboard{height:auto;min-height:100dvh;overflow:visible}.ex-dash-shell{display:block;height:auto;padding-bottom:72px}.ex-dash-main{height:auto;min-height:100dvh;overflow:visible}.ex-dash-panel{overflow:visible;padding:14px 12px 24px}.ex-dash-sidebar-toggle{display:none}.ex-dash-topbar{position:sticky;top:0;display:flex;flex-wrap:wrap;padding:12px;z-index:70}.ex-dash-greeting{flex:1 1 190px}.ex-dash-global-search{order:3;width:100%}.ex-dash-metrics{order:2;width:auto;max-width:58vw;overflow-x:auto}.ex-minimal-welcome{grid-template-columns:1fr;min-height:0}.ex-current-learning{min-height:140px}.ex-identity-strip{grid-template-columns:repeat(3,minmax(140px,1fr));overflow-x:auto}.ex-room-grid.minimal,.ex-library-grid.notes{grid-template-columns:repeat(2,minmax(0,1fr))}.ex-class-header{grid-template-columns:minmax(0,1fr) auto}.ex-class-header>.ex-brand{display:none}.ex-header-progress{grid-column:1}.ex-bp{grid-column:2}.ex-header-progress-top{justify-content:flex-start}.ex-current-block{max-width:54vw}.ex-header-chips{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));width:100%}.ex-header-chip{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.ex-teacher-wrap{padding-bottom:24px}.ex-classroom-helpbar{padding-inline:0}.ex-drawer.helper{bottom:74px;height:min(72dvh,680px)}}
@media(max-width:640px){.ex-minimal-welcome{padding:20px;border-radius:20px}.ex-minimal-welcome h1{font-size:34px}.ex-identity-strip{grid-template-columns:repeat(3,150px)}.ex-minimal-classrooms{padding:14px}.ex-room-grid.minimal,.ex-library-grid.notes{grid-template-columns:1fr}.ex-library-toolbar.expanded,.ex-note-create-fields{grid-template-columns:1fr}.ex-danger-row{align-items:flex-start;flex-direction:column}.ex-danger-row .ex-btn{width:100%}.ex-class-header{padding:10px 12px;gap:8px}.ex-progress-number{font-size:31px;min-width:62px}.ex-current-block strong{font-size:13px}.ex-header-chips{grid-template-columns:1fr 1fr}.ex-header-chip:last-child{grid-column:1/-1}.ex-header-chip{padding:6px 8px;font-size:9px}.ex-bp{padding:9px 11px;font-size:10px}.ex-classroom-helpbar{grid-template-columns:1fr 1fr;gap:8px}.ex-help-button{min-height:49px;font-size:12px}.ex-drawer.helper{right:8px;left:8px;width:auto;bottom:8px;height:min(78dvh,700px);border-radius:24px}.ex-lab-controls{grid-template-columns:1fr}.ex-lab-result{grid-template-columns:auto 1fr}.ex-lab-formula{font-size:12px}}
@media(prefers-reduced-motion:reduce){.ex-progress>span,.ex-dash-shell,.ex-dash-sidebar,.ex-drawer.helper{transition:none!important}}
.ex-dash-sidebar-toggle svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round}
@media(min-width:901px){.ex-drawer.helper{width:min(400px,calc(100vw - 28px));height:min(58dvh,560px);background:linear-gradient(155deg,rgba(15,30,54,.56),rgba(5,11,22,.38));box-shadow:0 22px 72px rgba(0,0,0,.38),inset 0 1px rgba(255,255,255,.1)}}

/* ===== Exam Mode V6.5 · Reference-locked desktop classroom controls ===== */
@media (min-width:901px){
  .ex-teacher-wrap{
    padding:clamp(24px,2.4vw,38px) max(110px,7vw) 132px;
  }
  .ex-classroom-helpbar{
    display:contents;
  }
  .ex-side-pill{
    width:62px;
    min-width:62px;
    height:126px;
    min-height:126px;
    padding:14px 10px;
    flex-direction:column;
    gap:10px;
    writing-mode:horizontal-tb;
    border:1px solid rgba(167,151,224,.28);
    border-radius:28px;
    background:linear-gradient(180deg,rgba(12,11,31,.96),rgba(7,7,20,.96));
    color:rgba(248,247,255,.9);
    box-shadow:0 18px 48px rgba(0,0,0,.4),inset 0 1px rgba(255,255,255,.035);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
  }
  .ex-side-pill svg{
    width:22px;
    height:22px;
    flex:0 0 auto;
    fill:none;
    stroke:currentColor;
    stroke-width:1.8;
    stroke-linecap:round;
    stroke-linejoin:round;
  }
  .ex-side-pill span{
    writing-mode:vertical-rl;
    text-orientation:mixed;
    text-transform:uppercase;
    letter-spacing:.11em;
    font-size:11px;
    line-height:1;
  }
  .ex-pill-history{
    left:clamp(24px,3.1vw,54px);
    top:52%;
    bottom:auto;
    transform:translateY(-50%);
  }
  .ex-pill-controls{
    right:clamp(24px,3.1vw,54px);
    top:52%;
    bottom:auto;
    transform:translateY(-50%);
  }
  .ex-side-pill:not(:disabled):hover{
    transform:translateY(-50%) scale(1.035);
    border-color:rgba(177,201,255,.5);
    box-shadow:0 22px 58px rgba(0,0,0,.5),0 0 24px rgba(108,145,255,.11);
  }
  .ex-side-pill:not(:disabled):active{
    transform:translateY(-50%) scale(.985);
  }
  .ex-help-button{
    position:fixed;
    z-index:58;
    bottom:clamp(22px,3vh,34px);
    width:auto;
    min-width:180px;
    min-height:64px;
    padding:0 28px;
    border-radius:999px;
    font-size:16px;
    font-weight:950;
    letter-spacing:-.015em;
    box-shadow:0 18px 52px rgba(0,0,0,.44),inset 0 1px rgba(255,255,255,.22);
  }
  .ex-help-button svg{
    width:22px;
    height:22px;
    stroke-width:1.9;
  }
  .ex-help-button.notes{
    left:clamp(28px,3.6vw,62px);
    right:auto;
    border-color:rgba(255,232,121,.44);
    background:linear-gradient(135deg,#ead05a,#c2a12d);
    color:#151006;
  }
  .ex-help-button.mentor{
    right:clamp(28px,3.6vw,62px);
    left:auto;
    min-width:220px;
    border-color:rgba(155,196,255,.54);
    background:linear-gradient(135deg,#7898f5,#8ec2ff);
    color:#07101f;
  }
  .ex-help-button:not(:disabled):hover{
    transform:translateY(-3px);
    filter:brightness(1.04);
  }
  .ex-help-button:not(:disabled):active{
    transform:translateY(0) scale(.985);
  }
  html[data-exam-focus-mode="1"] .ex-classroom-helpbar,
  html[data-exam-focus-mode="1"] .ex-help-button{
    display:none!important;
  }
}
@media (min-width:901px) and (max-height:760px){
  .ex-side-pill{height:112px;min-height:112px}
  .ex-pill-history,.ex-pill-controls{top:54%}
  .ex-help-button{bottom:16px;min-height:56px;font-size:14px}
  .ex-teacher-wrap{padding-bottom:104px}
}
@media (prefers-reduced-motion:reduce){
  .ex-side-pill,.ex-help-button{transition:none!important}
}

/* V6.5 desktop stage navigation follows the same reference canvas: side arrows, centre dots. */
@media (min-width:901px){
  .ex-teacher-stage{grid-template-rows:auto minmax(160px,1fr)}
  .ex-stage-nav{
    position:absolute;
    inset:0;
    z-index:30;
    width:auto;
    margin:0;
    padding:0;
    display:block;
    border-radius:inherit;
    background:none;
    backdrop-filter:none;
    pointer-events:none;
  }
  .ex-stage-nav #examSlidePrevious,
  .ex-stage-nav #examSlideNext{
    position:absolute;
    top:58%;
    width:72px;
    height:72px;
    min-width:72px;
    padding:0;
    border-radius:50%;
    border:1px solid rgba(133,165,232,.31);
    background:rgba(5,8,22,.92);
    color:#f5f7ff;
    box-shadow:0 0 0 10px rgba(81,110,189,.07),0 18px 44px rgba(0,0,0,.38);
    transform:translateY(-50%);
    font-size:0;
    pointer-events:auto;
  }
  .ex-stage-nav #examSlidePrevious{left:18px}
  .ex-stage-nav #examSlideNext{right:18px}
  .ex-stage-nav #examSlidePrevious::before,
  .ex-stage-nav #examSlideNext::before{
    display:block;
    font-size:44px;
    font-weight:400;
    line-height:64px;
  }
  .ex-stage-nav #examSlidePrevious::before{content:'‹'}
  .ex-stage-nav #examSlideNext::before{content:'›'}
  .ex-stage-nav #examSlidePrevious:not(:disabled):hover,
  .ex-stage-nav #examSlideNext:not(:disabled):hover{
    transform:translateY(-50%) scale(1.04);
    border-color:rgba(143,193,255,.58);
    background:rgba(10,17,39,.98);
  }
  .ex-stage-nav #examSlidePrevious:not(:disabled):active,
  .ex-stage-nav #examSlideNext:not(:disabled):active{
    transform:translateY(-50%) scale(.97);
  }
  .ex-stage-nav .ex-stage-dots{
    position:absolute;
    left:50%;
    bottom:24px;
    transform:translateX(-50%);
    max-width:55%;
    padding:7px 10px;
    border-radius:999px;
    background:rgba(4,7,18,.58);
    pointer-events:auto;
  }
  .ex-stage-body{padding-bottom:74px}
}

/* Exam Mode V6.6 — adaptive teaching and interaction polish. */
.ex-bp svg,.ex-icon-btn svg,.ex-mentor-mic svg,.ex-mentor-send svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto}
.ex-drawer.helper{display:flex;flex-direction:column;min-width:330px;min-height:360px;max-width:min(58vw,760px);max-height:calc(100dvh - 118px);width:440px;height:650px;overflow:hidden;resize:none}
.ex-drawer.helper .ex-drawer-head{flex:0 0 auto;cursor:default}.ex-drawer-head-actions{display:flex;gap:8px;align-items:center}.ex-drawer-head-actions .ex-icon-btn{width:38px;height:38px;border-radius:50%;display:grid;place-items:center}
.ex-drawer.helper .ex-drawer-body{min-height:0;overflow:hidden;display:flex;flex-direction:column;padding:16px}.ex-teacher-context{display:flex;flex-wrap:wrap;gap:6px;flex:0 0 auto}.ex-quick-actions{flex:0 0 auto;max-height:94px;overflow:auto;padding-block:10px 5px}
.ex-mentor-scroll{position:relative;min-height:0;flex:1;overflow:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:rgba(146,187,255,.48) rgba(255,255,255,.04);padding:3px 4px 16px}.ex-mentor-scroll::-webkit-scrollbar{width:9px}.ex-mentor-scroll::-webkit-scrollbar-track{background:rgba(255,255,255,.035);border-radius:99px}.ex-mentor-scroll::-webkit-scrollbar-thumb{background:rgba(146,187,255,.42);border-radius:99px;border:2px solid transparent;background-clip:padding-box}
.ex-mentor-messages{display:grid;gap:12px;align-content:start}.ex-mentor-message{position:relative;border:1px solid var(--ex-line);border-radius:18px;padding:14px;line-height:1.55;min-width:0}.ex-mentor-message.user{background:rgba(104,139,255,.15);margin-left:34px}.ex-mentor-message.ai{background:rgba(255,255,255,.075);margin-right:20px}.ex-mentor-message.error{border-color:rgba(255,117,135,.5)}
.ex-message-tools{display:flex;gap:4px;flex-wrap:wrap;margin-top:10px;padding-top:8px;border-top:1px solid rgba(255,255,255,.08);opacity:.72;transition:opacity .18s ease}.ex-mentor-message:hover .ex-message-tools,.ex-mentor-message:focus-within .ex-message-tools{opacity:1}.ex-message-tools button{display:inline-flex;align-items:center;gap:5px;min-height:30px;padding:5px 8px;border:0;border-radius:9px;background:rgba(255,255,255,.055);color:var(--ex-muted);font:inherit;font-size:11px;font-weight:800}.ex-message-tools button:hover,.ex-message-tools button:focus-visible{color:var(--ex-text);background:rgba(120,164,255,.16)}.ex-message-tools svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}.ex-message-tools .added{color:#8ee8bd}
.ex-new-reply{position:sticky;bottom:4px;margin:8px auto 0;display:block;border:1px solid rgba(143,190,255,.4);border-radius:999px;background:rgba(9,22,44,.94);color:#dbeaff;padding:7px 12px;font-weight:850;box-shadow:0 8px 25px rgba(0,0,0,.35)}
.ex-mentor-compose{position:relative;flex:0 0 auto;padding:12px;border-top:1px solid var(--ex-line);display:grid;grid-template-columns:42px minmax(0,1fr) 44px;gap:8px;align-items:end;background:rgba(4,10,20,.5);backdrop-filter:blur(16px)}.ex-mentor-compose textarea{min-height:44px;max-height:132px;resize:none;overflow:auto;padding:12px 13px}.ex-mentor-mic,.ex-mentor-send{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;border:1px solid var(--ex-line);background:rgba(255,255,255,.055);color:var(--ex-text)}.ex-mentor-mic.listening{color:#ffcb73;border-color:rgba(255,173,68,.65);background:rgba(255,133,46,.15);box-shadow:0 0 0 5px rgba(255,133,46,.08)}.ex-mentor-send{width:44px;height:44px}.ex-mic-status{position:absolute;left:62px;bottom:2px;font-size:10px;color:var(--ex-muted);pointer-events:none}.ex-mentor-resize{position:absolute;left:3px;top:3px;width:18px;height:18px;cursor:nwse-resize;z-index:6;opacity:.48;background:linear-gradient(135deg,transparent 45%,rgba(173,207,255,.75) 46% 52%,transparent 53% 62%,rgba(173,207,255,.55) 63% 69%,transparent 70%)}
.ex-question-actions{align-items:center}.ex-hint-button{border-color:rgba(244,202,80,.42)!important;color:#ffe38b!important}.ex-hint-box{margin-top:12px;padding:13px 15px;border:1px solid rgba(244,202,80,.3);border-radius:15px;background:rgba(244,202,80,.075);color:#fff2bd}.ex-hint-box strong{display:block;margin-bottom:5px}.ex-question-source-label{display:inline-flex;margin:0 0 12px;padding:5px 9px;border-radius:999px;background:rgba(132,183,255,.1);border:1px solid rgba(132,183,255,.24);font-size:11px;color:#cde4ff}.ex-question-followups{display:flex;gap:8px;flex-wrap:wrap;margin-top:13px}
.ex-slide-pills{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0 4px}.ex-slide-pill{display:inline-flex;align-items:center;gap:6px;border:1px solid rgba(135,183,255,.28);border-radius:999px;background:rgba(67,115,206,.09);color:#d9e9ff;padding:7px 11px;font-size:12px;font-weight:850}.ex-slide-pill:hover,.ex-slide-pill:focus-visible{background:rgba(67,115,206,.18);border-color:rgba(135,183,255,.5)}
.ex-prerequisite-overlay{z-index:142}.ex-prerequisite-card{max-width:760px}.ex-confidence-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:20px 0}.ex-confidence-choice{border:1px solid var(--ex-line);border-radius:18px;background:rgba(255,255,255,.045);color:var(--ex-text);padding:16px;text-align:left;display:flex;gap:12px;align-items:center;font-weight:850}.ex-confidence-choice:hover,.ex-confidence-choice:focus-visible{border-color:rgba(135,183,255,.55);background:rgba(84,126,221,.12)}.ex-confidence-choice svg{width:24px;height:24px;fill:none;stroke:var(--ex-cyan);stroke-width:1.8;flex:0 0 auto}.ex-support-copy{color:var(--ex-muted);font-size:13px}
.ex-dwell-nudge{position:fixed;right:26px;bottom:112px;z-index:126;width:min(420px,calc(100vw - 32px));padding:17px;border:1px solid rgba(150,191,255,.32);border-radius:20px;background:rgba(8,17,34,.94);box-shadow:0 20px 70px rgba(0,0,0,.5);backdrop-filter:blur(18px)}.ex-dwell-nudge p{color:var(--ex-muted);margin:7px 0 12px}.ex-dwell-nudge>div{display:flex;gap:7px;flex-wrap:wrap}.ex-dwell-nudge button{border:1px solid var(--ex-line);border-radius:10px;background:rgba(255,255,255,.05);color:var(--ex-text);padding:8px 10px;font-weight:800}
.ex-shortcut-grid{display:grid;grid-template-columns:auto 1fr;gap:10px 16px;align-items:center;margin:20px 0}.ex-shortcut-grid kbd{min-width:78px;text-align:center;padding:7px 9px;border:1px solid var(--ex-line);border-radius:9px;background:rgba(255,255,255,.055);box-shadow:inset 0 -2px rgba(0,0,0,.3);font:inherit;font-size:12px;font-weight:900}
.ex-block-recap{border:1px solid rgba(135,183,255,.27);border-radius:20px;background:rgba(79,116,194,.08);padding:18px;margin-top:18px}.ex-block-recap h3{margin-top:0}.ex-block-recap ul{margin:8px 0;padding-left:20px}.ex-complete-stats{list-style:none;padding:0;margin:24px auto;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;max-width:650px;text-align:left}.ex-complete-stats li{border:1px solid var(--ex-line);border-radius:15px;padding:11px 14px;background:rgba(255,255,255,.045)}.ex-complete-next{font-weight:850;color:#dce9ff}.ex-complete-overlay[hidden]{display:none!important}html[data-exam-complete-open] #examTeacherStage,html[data-exam-complete-open] .ex-side-pill,html[data-exam-complete-open] .ex-classroom-helpbar{pointer-events:none}
.ex-sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
.ex-learning-route-strip{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:12px;color:var(--ex-muted);font-size:12px}.ex-learning-route-strip strong{color:var(--ex-text)}
@media(max-width:760px){.ex-drawer.helper{right:8px!important;left:8px!important;top:8px!important;bottom:8px!important;width:auto!important;height:auto!important;min-width:0;min-height:0;max-width:none;max-height:none;border-radius:24px;resize:none}.ex-mentor-resize,#examMentorResizeReset{display:none}.ex-mentor-compose{grid-template-columns:42px minmax(0,1fr) 44px}.ex-confidence-grid{grid-template-columns:1fr}.ex-complete-stats{grid-template-columns:1fr}.ex-dwell-nudge{right:12px;bottom:80px}.ex-message-tools{opacity:1}.ex-quick-actions{overflow-x:auto;flex-wrap:nowrap;max-height:none}.ex-quick-actions .ex-pill{white-space:nowrap}}
@media(prefers-reduced-motion:reduce){.ex-message-tools,.ex-mentor-mic,.ex-new-reply{transition:none!important}.ex-mentor-mic.listening{box-shadow:none}}
.ex-lab-intro{display:grid;gap:5px;margin-bottom:14px}.ex-lab-intro p{margin:0;color:var(--ex-muted)}.ex-lab-native-visual{position:relative;height:28px;margin:14px 0;border-radius:999px;overflow:hidden;background:rgba(255,255,255,.055);border:1px solid var(--ex-line)}.ex-lab-native-visual>span{display:block;height:100%;min-width:2px;background:linear-gradient(90deg,#6d8cff,#8fd4ff,#f3c75f);transition:width .22s ease}.ex-lab-native-visual>small{position:absolute;inset:0;display:grid;place-items:center;color:#07101f;font-weight:900;text-shadow:0 1px rgba(255,255,255,.35)}.ex-lab-observation{display:grid;gap:4px;margin-top:14px;padding:13px;border:1px solid rgba(143,190,255,.25);border-radius:14px;background:rgba(82,126,221,.08)}.ex-lab-observation span{color:var(--ex-muted)}.ex-lab-toolbar{display:flex;justify-content:flex-end;margin-top:12px}.ex-native-concept-diagram{display:grid;gap:16px;padding:18px;border:1px solid rgba(143,190,255,.25);border-radius:18px;background:rgba(82,126,221,.07)}.ex-native-diagram-flow{display:grid;grid-template-columns:1fr auto 1.25fr auto 1fr;gap:10px;align-items:center}.ex-native-diagram-flow span{padding:14px 10px;border-radius:14px;background:rgba(255,255,255,.06);text-align:center;font-weight:850}.ex-native-diagram-flow b{color:var(--ex-cyan)}
.ex-confidence-choice span{display:grid;gap:4px}.ex-confidence-choice small{color:var(--ex-muted);font-weight:600;line-height:1.4}
@media(max-width:640px){.ex-native-diagram-flow{grid-template-columns:1fr}.ex-native-diagram-flow b{transform:rotate(90deg);text-align:center}}


/* ===== Exam Mode V6.7 · final completion, tutorial and mobile-header stabilization ===== */
.ex-complete-overlay{
  background:#000!important;
  color:#fff;
  backdrop-filter:none!important;
  -webkit-backdrop-filter:none!important;
  isolation:isolate;
  overflow:auto;
}
.ex-complete-overlay::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:0;
  background:#000;
}
.ex-complete-overlay .ex-complete-card{
  position:relative;
  z-index:2;
  width:min(820px,100%);
  padding:clamp(24px,4vw,48px);
  border:0;
  background:transparent;
  box-shadow:none;
}
.ex-complete-overlay .ex-kicker{color:#9bdcff}
.ex-complete-overlay .ex-entry-lead{color:rgba(255,255,255,.78)}
.ex-complete-overlay .ex-complete-stats li{
  border-color:#242424;
  background:#080808;
}
.ex-complete-overlay .ex-complete-stats span{color:rgba(255,255,255,.68)}
.ex-complete-overlay .ex-complete-stats li{display:flex;align-items:baseline;gap:8px}
.ex-complete-overlay .ex-complete-next{color:#e6efff}
.ex-complete-overlay .ex-confetti{display:none!important}
html[data-exam-complete-open] body{overflow:hidden}
html[data-exam-complete-open] #examClassroom,
html[data-exam-complete-open] .ex-drawer,
html[data-exam-complete-open] .ex-drawer-backdrop,
html[data-exam-complete-open] .ex-selection-toolbar,
html[data-exam-complete-open] .ex-dwell-nudge{visibility:hidden!important}
html[data-exam-complete-open] #examComplete{visibility:visible!important}
.ex-tutorial-progress{
  margin-bottom:9px;
  color:var(--ex-cyan);
  font-size:11px;
  font-weight:900;
  letter-spacing:.1em;
  text-transform:uppercase;
}
.ex-tutorial-card{
  max-height:calc(100dvh - 24px);
  overflow:auto;
  overscroll-behavior:contain;
}
.ex-tutorial-card:focus-visible{outline:3px solid rgba(155,220,255,.8);outline-offset:3px}
@media(max-width:760px){
  :root{--ex-header:102px}
  .ex-dash-overview.minimal,.ex-dash-page,.ex-minimal-welcome,.ex-identity-strip,.ex-minimal-classrooms,.ex-room-grid.minimal{width:100%;min-width:0;max-width:100%}
  .ex-minimal-welcome>*{min-width:0;max-width:100%}
  .ex-current-learning,.ex-dash-section-head,.ex-room-toolbar.compact,.ex-room-filters,.ex-room-select{min-width:0;max-width:100%}
  .ex-dash-section-head{flex-wrap:wrap}
  .ex-room-toolbar.compact{width:100%;overflow:hidden}
  .ex-class-header{
    grid-template-columns:minmax(0,1fr) minmax(66px,auto);
    gap:6px;
    padding:7px 8px;
  }
  .ex-header-progress-top{gap:5px;align-items:center}
  .ex-progress-number{font-size:22px;line-height:1;min-width:44px}
  .ex-current-block small{font-size:8px;line-height:1.05;letter-spacing:.015em}
  .ex-current-block strong{font-size:10px;line-height:1.15}
  .ex-class-header .ex-progress{height:5px;margin-top:4px}
  .ex-header-chips{gap:3px;margin-top:4px;grid-template-columns:1fr 1fr}
  .ex-header-chip{padding:4px 5px;font-size:8px;line-height:1.05}
  .ex-header-chip:last-child{grid-column:1/-1}
  .ex-bp{max-width:82px;padding:7px 7px;font-size:9px;gap:5px}
  .ex-bp svg{width:15px;height:15px}
  .ex-tutorial-card{width:calc(100vw - 24px)!important;padding:18px;border-radius:18px}
  .ex-tutorial-card h2{font-size:23px;line-height:1.08}
  .ex-tutorial-card p{font-size:13px;line-height:1.45}
  .ex-tutorial-actions{gap:6px;flex-wrap:wrap}
  .ex-tutorial-actions .ex-btn{flex:1 1 auto;min-width:72px}
  .ex-complete-overlay{padding:18px}
  .ex-complete-overlay .ex-complete-card{padding:18px 4px}
  .ex-complete-card h1{font-size:clamp(50px,17vw,76px)}
}
@media(max-width:380px){
  :root{--ex-header:96px}
  .ex-class-header{grid-template-columns:minmax(0,1fr) 62px;padding:6px}
  .ex-progress-number{font-size:20px;min-width:40px}
  .ex-current-block small{font-size:7px}
  .ex-current-block strong{font-size:9px}
  .ex-header-chip{font-size:7px;padding:3px 4px}
  .ex-bp{font-size:8px;padding:6px 5px;max-width:62px}
}

/* V6.8 mobile dashboard shell lock: keep navigation as a true bottom bar.
   This block intentionally comes last so later desktop shell rules cannot
   stretch the mobile navigation across the viewport. */
@media (max-width:900px){
  .ex-dashboard .ex-dash-shell{
    display:block!important;
    width:100%!important;
    height:auto!important;
    min-height:100dvh!important;
    padding-bottom:calc(64px + env(safe-area-inset-bottom,0px))!important;
  }
  .ex-dashboard .ex-dash-main{
    width:100%!important;
    height:auto!important;
    min-height:100dvh!important;
    margin:0!important;
    overflow:visible!important;
  }
  .ex-dashboard .ex-dash-sidebar{
    position:fixed!important;
    inset:auto 0 0 0!important;
    width:100%!important;
    min-width:0!important;
    max-width:none!important;
    height:calc(64px + env(safe-area-inset-bottom,0px))!important;
    min-height:0!important;
    max-height:calc(64px + env(safe-area-inset-bottom,0px))!important;
    padding:6px 8px env(safe-area-inset-bottom,0px)!important;
    margin:0!important;
    overflow:hidden!important;
    transform:none!important;
    border-right:0!important;
    border-top:1px solid rgba(116,168,255,.18)!important;
    background:rgba(4,9,17,.97)!important;
    box-shadow:0 -10px 28px rgba(0,0,0,.34)!important;
    display:block!important;
    z-index:90!important;
  }
  .ex-dashboard .ex-dash-brand,
  .ex-dashboard .ex-dash-private{display:none!important}
  .ex-dashboard .ex-dash-nav{
    width:100%!important;
    height:58px!important;
    display:grid!important;
    grid-template-columns:repeat(6,minmax(0,1fr))!important;
    align-items:stretch!important;
    gap:2px!important;
  }
  .ex-dashboard .ex-dash-nav button,
  html[data-exam-dash-sidebar="collapsed"] .ex-dashboard .ex-dash-nav button{
    width:100%!important;
    min-width:0!important;
    height:58px!important;
    justify-content:center!important;
    flex-direction:column!important;
    gap:3px!important;
    padding:5px 2px!important;
    border-radius:9px!important;
    font-size:8px!important;
    line-height:1!important;
    transform:none!important;
  }
  .ex-dashboard .ex-dash-nav .ex-svg,
  html[data-exam-dash-sidebar="collapsed"] .ex-dashboard .ex-dash-nav .ex-svg{
    width:18px!important;
    height:18px!important;
  }
  html[data-exam-dash-sidebar="collapsed"] .ex-dashboard .ex-dash-shell{
    grid-template-columns:none!important;
  }
  html[data-exam-dash-sidebar="collapsed"] .ex-dashboard .ex-dash-sidebar{
    width:100%!important;
    padding:6px 8px env(safe-area-inset-bottom,0px)!important;
  }
  html[data-exam-dash-sidebar="collapsed"] .ex-dashboard .ex-dash-nav button>span+*{
    font-size:8px!important;
  }
  .ex-dashboard .ex-dash-panel{
    width:100%!important;
    min-width:0!important;
    overflow:visible!important;
  }
}
@media (max-width:380px){
  .ex-dashboard .ex-dash-nav button,
  html[data-exam-dash-sidebar="collapsed"] .ex-dashboard .ex-dash-nav button{font-size:7px!important}
  html[data-exam-dash-sidebar="collapsed"] .ex-dashboard .ex-dash-nav button>span+*{font-size:7px!important}
  .ex-dashboard .ex-dash-nav .ex-svg,
  html[data-exam-dash-sidebar="collapsed"] .ex-dashboard .ex-dash-nav .ex-svg{width:17px!important;height:17px!important}
}

/* ===== Exam Mode launch dashboard · single viewport/layout owner =====
   This block deliberately supersedes earlier dashboard experiments. The shell
   owns exactly one visual viewport; the panel is the only scrolling surface. */
#examDashboard.ex-dashboard:not([hidden]){
  position:fixed!important;
  inset:0!important;
  width:100vw!important;
  height:100vh!important;
  height:100svh!important;
  height:100dvh!important;
  min-width:0!important;
  min-height:0!important;
  margin:0!important;
  padding:0!important;
  overflow:hidden!important;
  background:var(--ex-bg,#050914)!important;
  isolation:isolate;
  z-index:40;
}
#examDashboard .ex-dash-shell{
  position:absolute!important;
  inset:0!important;
  display:grid!important;
  grid-template-columns:248px minmax(0,1fr)!important;
  width:100%!important;
  height:100%!important;
  min-width:0!important;
  min-height:0!important;
  margin:0!important;
  padding:0!important;
  overflow:hidden!important;
}
#examDashboard .ex-dash-sidebar{
  position:relative!important;
  inset:auto!important;
  display:flex!important;
  flex-direction:column!important;
  width:auto!important;
  min-width:0!important;
  height:100%!important;
  min-height:0!important;
  padding:18px 14px!important;
  margin:0!important;
  overflow:hidden!important;
  transform:none!important;
  border:0!important;
  border-right:1px solid rgba(137,174,255,.14)!important;
  background:linear-gradient(180deg,rgba(11,18,34,.99),rgba(5,10,20,.99))!important;
  box-shadow:none!important;
  z-index:3!important;
}
#examDashboard .ex-dash-brand{
  display:flex!important;
  align-items:center!important;
  gap:10px!important;
  min-width:0!important;
  min-height:48px!important;
  padding:6px 8px 16px!important;
  text-decoration:none!important;
}
#examDashboard .ex-dash-brand img{width:34px!important;height:34px!important;flex:0 0 auto!important}
#examDashboard .ex-dash-brand span{display:grid!important;min-width:0!important;line-height:1.1!important}
#examDashboard .ex-dash-brand strong{font-size:15px!important;white-space:nowrap!important;overflow:hidden!important;text-overflow:ellipsis!important}
#examDashboard .ex-dash-brand small{font-size:10px!important;color:var(--ex-muted)!important}
#examDashboard .ex-dash-nav{
  display:grid!important;
  grid-auto-rows:minmax(48px,auto)!important;
  align-content:start!important;
  gap:6px!important;
  width:100%!important;
  height:auto!important;
  min-height:0!important;
  padding:4px 0!important;
  overflow-y:auto!important;
  overflow-x:hidden!important;
  scrollbar-width:thin;
}
#examDashboard .ex-dash-nav button,
html[data-exam-dash-sidebar="collapsed"] #examDashboard .ex-dash-nav button{
  display:flex!important;
  align-items:center!important;
  justify-content:flex-start!important;
  flex-direction:row!important;
  gap:11px!important;
  width:100%!important;
  min-width:0!important;
  height:auto!important;
  min-height:48px!important;
  padding:10px 12px!important;
  margin:0!important;
  border:1px solid transparent!important;
  border-radius:13px!important;
  background:transparent!important;
  color:var(--ex-muted)!important;
  font:inherit!important;
  font-size:13px!important;
  font-weight:800!important;
  line-height:1.2!important;
  text-align:left!important;
  white-space:normal!important;
  transform:none!important;
  cursor:pointer!important;
}
#examDashboard .ex-dash-nav button:hover{background:rgba(118,157,255,.08)!important;color:var(--ex-text)!important}
#examDashboard .ex-dash-nav button.active{
  border-color:rgba(120,171,255,.22)!important;
  background:linear-gradient(135deg,rgba(78,123,237,.18),rgba(89,208,255,.08))!important;
  color:#fff!important;
  box-shadow:inset 3px 0 0 var(--ex-blue,#7aa7ff)!important;
}
#examDashboard .ex-dash-nav .ex-svg{width:20px!important;height:20px!important;flex:0 0 auto!important}
#examDashboard .ex-dash-main{
  position:relative!important;
  display:grid!important;
  grid-template-rows:auto minmax(0,1fr)!important;
  width:100%!important;
  height:100%!important;
  min-width:0!important;
  min-height:0!important;
  margin:0!important;
  padding:0!important;
  overflow:hidden!important;
  background:
    radial-gradient(circle at 85% -10%,rgba(75,119,231,.15),transparent 34%),
    linear-gradient(180deg,#070c17,#040812)!important;
}
#examDashboard .ex-dash-topbar{
  position:relative!important;
  display:grid!important;
  grid-template-columns:auto minmax(190px,.65fr) minmax(240px,1fr) auto!important;
  align-items:center!important;
  gap:14px!important;
  width:100%!important;
  min-width:0!important;
  min-height:78px!important;
  padding:12px 20px!important;
  margin:0!important;
  border:0!important;
  border-bottom:1px solid rgba(137,174,255,.13)!important;
  background:rgba(5,10,20,.9)!important;
  backdrop-filter:blur(18px)!important;
  -webkit-backdrop-filter:blur(18px)!important;
  z-index:4!important;
}
#examDashboard .ex-dash-sidebar-toggle{
  display:grid!important;
  place-items:center!important;
  width:42px!important;
  min-width:42px!important;
  height:42px!important;
  padding:0!important;
  border:1px solid rgba(137,174,255,.18)!important;
  border-radius:12px!important;
  background:rgba(255,255,255,.045)!important;
  color:var(--ex-text)!important;
}
#examDashboard .ex-dash-sidebar-toggle svg{width:20px!important;height:20px!important;fill:none!important;stroke:currentColor!important;stroke-width:1.8!important}
#examDashboard .ex-dash-greeting{display:grid!important;gap:4px!important;min-width:0!important}
#examDashboard .ex-dash-greeting-line{display:flex!important;align-items:center!important;gap:8px!important;min-width:0!important}
#examDashboard .ex-dash-greeting strong{min-width:0!important;overflow:hidden!important;text-overflow:ellipsis!important;white-space:nowrap!important;font-size:15px!important}
#examDashboard .ex-dash-greeting>span{min-width:0!important;overflow:hidden!important;text-overflow:ellipsis!important;white-space:nowrap!important;color:var(--ex-muted)!important;font-size:11px!important}
#examDashboard .ex-account-badge{
  display:inline-flex!important;
  align-items:center!important;
  justify-content:center!important;
  flex:0 0 auto!important;
  min-height:24px!important;
  padding:4px 9px!important;
  border:1px solid rgba(255,255,255,.14)!important;
  border-radius:999px!important;
  font-size:9px!important;
  font-weight:950!important;
  letter-spacing:.06em!important;
  line-height:1!important;
  text-transform:uppercase!important;
}
#examDashboard .ex-account-badge.free{background:rgba(255,255,255,.055)!important;color:#cbd5e8!important}
#examDashboard .ex-account-badge.vip{border-color:rgba(245,198,79,.42)!important;background:linear-gradient(135deg,rgba(245,198,79,.2),rgba(255,155,61,.11))!important;color:#ffe49a!important;box-shadow:0 0 18px rgba(245,198,79,.09)!important}
#examDashboard .ex-account-badge.trial{border-color:rgba(142,219,255,.42)!important;background:linear-gradient(135deg,rgba(101,173,255,.19),rgba(157,103,255,.13))!important;color:#d8eeff!important}
#examDashboard .ex-dash-global-search{
  display:flex!important;
  align-items:center!important;
  gap:9px!important;
  width:100%!important;
  min-width:0!important;
  min-height:44px!important;
  padding:0 13px!important;
  border:1px solid rgba(137,174,255,.16)!important;
  border-radius:13px!important;
  background:rgba(255,255,255,.04)!important;
}
#examDashboard .ex-dash-global-search:focus-within{border-color:rgba(116,171,255,.55)!important;box-shadow:0 0 0 3px rgba(90,145,255,.1)!important}
#examDashboard .ex-dash-global-search .ex-svg{width:18px!important;height:18px!important;flex:0 0 auto!important;color:var(--ex-muted)!important}
#examDashboard .ex-dash-global-search input{width:100%!important;min-width:0!important;border:0!important;outline:0!important;background:transparent!important;color:var(--ex-text)!important;font:inherit!important;font-size:12px!important}
#examDashboard .ex-dash-metrics{display:flex!important;align-items:center!important;justify-content:flex-end!important;gap:7px!important;min-width:0!important}
#examDashboard .ex-metric-pill,#examDashboard .ex-icon-label-btn{
  display:inline-flex!important;
  align-items:center!important;
  justify-content:center!important;
  gap:6px!important;
  min-width:0!important;
  min-height:40px!important;
  padding:7px 9px!important;
  border:1px solid rgba(137,174,255,.14)!important;
  border-radius:12px!important;
  background:rgba(255,255,255,.04)!important;
  color:var(--ex-text)!important;
  white-space:nowrap!important;
}
#examDashboard .ex-metric-pill strong,#examDashboard .ex-icon-label-btn strong{font-size:10px!important;line-height:1!important}
#examDashboard .ex-metric-pill>span,#examDashboard .ex-icon-label-btn>span{display:grid!important;place-items:center!important;width:20px!important;height:20px!important;flex:0 0 auto!important}
#examDashboard .ex-metric-special,#examDashboard .ex-dash-flame{width:18px!important;height:22px!important}
#examDashboard .ex-icon-label-btn .ex-svg{width:17px!important;height:17px!important}
#examDashboard .ex-dash-panel{
  position:relative!important;
  display:block!important;
  width:100%!important;
  height:100%!important;
  min-width:0!important;
  min-height:0!important;
  max-width:none!important;
  margin:0!important;
  padding:22px clamp(18px,2.4vw,34px) calc(30px + env(safe-area-inset-bottom,0px))!important;
  overflow-y:auto!important;
  overflow-x:hidden!important;
  overscroll-behavior:contain!important;
  -webkit-overflow-scrolling:touch!important;
  scrollbar-gutter:stable!important;
}
#examDashboard .ex-dash-panel>*{width:min(100%,1440px)!important;max-width:1440px!important;min-width:0!important;margin-left:auto!important;margin-right:auto!important}
#examDashboard .ex-dash-page,#examDashboard .ex-dash-overview,#examDashboard .ex-minimal-classrooms{display:grid!important;gap:18px!important;min-width:0!important}
#examDashboard .ex-dash-section-head,#examDashboard .ex-room-toolbar,#examDashboard .ex-library-toolbar,#examDashboard .ex-project-toolbar{
  display:flex!important;
  align-items:center!important;
  justify-content:space-between!important;
  gap:12px!important;
  min-width:0!important;
  flex-wrap:wrap!important;
}
#examDashboard .ex-room-grid,#examDashboard .ex-project-grid,#examDashboard .ex-library-grid,#examDashboard .ex-settings-grid{min-width:0!important;grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr))!important;gap:14px!important}
#examDashboard .ex-room-card,#examDashboard .ex-project-card,#examDashboard .ex-library-card,#examDashboard .ex-dash-card,#examDashboard .ex-settings-card,#examDashboard .ex-current-learning,#examDashboard .ex-identity-card{
  min-width:0!important;
  max-width:100%!important;
  overflow:hidden!important;
  border:1px solid rgba(137,174,255,.14)!important;
  border-radius:18px!important;
  background:linear-gradient(145deg,rgba(16,25,45,.92),rgba(8,14,27,.94))!important;
  box-shadow:0 14px 36px rgba(0,0,0,.18)!important;
}
#examDashboard button,#examDashboard input,#examDashboard select,#examDashboard textarea{max-width:100%!important}
#examDashboard .ex-room-card h3,#examDashboard .ex-project-card h3,#examDashboard .ex-library-card h3,#examDashboard .ex-dash-card h2,#examDashboard .ex-dash-card h3{overflow-wrap:anywhere!important}
#examDashboard .ex-room-meta,#examDashboard .ex-room-badges,#examDashboard .ex-card-actions,#examDashboard .ex-room-card-actions,#examDashboard .ex-dash-actions{min-width:0!important;flex-wrap:wrap!important}
#examDashboard .ex-context-menu{
  position:fixed!important;
  z-index:160!important;
  min-width:190px!important;
  padding:7px!important;
  border:1px solid rgba(137,174,255,.2)!important;
  border-radius:14px!important;
  background:rgba(8,14,27,.99)!important;
  box-shadow:0 20px 50px rgba(0,0,0,.48)!important;
}
#examDashboard .ex-context-menu button{display:flex!important;align-items:center!important;gap:9px!important;width:100%!important;min-height:42px!important;padding:9px 10px!important;border-radius:10px!important;text-align:left!important}
#examDashboard .ex-dashboard-modal{position:fixed!important;inset:0!important;z-index:150!important;min-width:0!important;padding:max(14px,env(safe-area-inset-top,0px)) max(14px,env(safe-area-inset-right,0px)) max(14px,env(safe-area-inset-bottom,0px)) max(14px,env(safe-area-inset-left,0px))!important;overflow:auto!important}
#examDashboard .ex-dashboard-modal>*{max-width:min(760px,100%)!important;max-height:calc(100dvh - 28px)!important;overflow:auto!important}
html[data-exam-dash-sidebar="collapsed"] #examDashboard .ex-dash-shell{grid-template-columns:82px minmax(0,1fr)!important}
html[data-exam-dash-sidebar="collapsed"] #examDashboard .ex-dash-sidebar{width:auto!important;padding-inline:10px!important}
html[data-exam-dash-sidebar="collapsed"] #examDashboard .ex-dash-brand span{display:none!important}
html[data-exam-dash-sidebar="collapsed"] #examDashboard .ex-dash-nav button{justify-content:center!important;padding-inline:8px!important;font-size:0!important;gap:0!important}
html[data-exam-dash-sidebar="collapsed"] #examDashboard .ex-dash-nav .ex-svg{width:22px!important;height:22px!important}
html[data-exam-dash-density="compact"] #examDashboard .ex-dash-panel{padding-top:14px!important}
html[data-exam-dash-density="compact"] #examDashboard .ex-dash-page,html[data-exam-dash-density="compact"] #examDashboard .ex-dash-overview{gap:12px!important}
html[data-exam-dash-density="compact"] #examDashboard .ex-room-grid,html[data-exam-dash-density="compact"] #examDashboard .ex-project-grid,html[data-exam-dash-density="compact"] #examDashboard .ex-library-grid{gap:10px!important;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr))!important}
html[data-exam-dash-density="compact"] #examDashboard .ex-room-card,html[data-exam-dash-density="compact"] #examDashboard .ex-project-card,html[data-exam-dash-density="compact"] #examDashboard .ex-library-card,html[data-exam-dash-density="compact"] #examDashboard .ex-dash-card{padding:13px!important;border-radius:14px!important}

@media (max-width:1180px) and (min-width:901px){
  #examDashboard .ex-dash-shell{grid-template-columns:92px minmax(0,1fr)!important}
  #examDashboard .ex-dash-sidebar{padding-inline:10px!important}
  #examDashboard .ex-dash-brand span{display:none!important}
  #examDashboard .ex-dash-nav button{justify-content:center!important;padding-inline:8px!important;font-size:0!important;gap:0!important}
  #examDashboard .ex-dash-nav .ex-svg{width:22px!important;height:22px!important}
  #examDashboard .ex-dash-topbar{grid-template-columns:auto minmax(160px,.5fr) minmax(220px,1fr)!important}
  #examDashboard .ex-dash-metrics{grid-column:2/4!important;justify-content:flex-start!important;overflow-x:auto!important;padding-bottom:2px!important}
}

@media (max-width:900px){
  #examDashboard.ex-dashboard:not([hidden]){height:100svh!important;height:100dvh!important}
  #examDashboard .ex-dash-shell{
    position:absolute!important;
    inset:0!important;
    display:grid!important;
    grid-template-columns:minmax(0,1fr)!important;
    grid-template-rows:minmax(0,1fr) auto!important;
    height:100%!important;
    min-height:0!important;
    padding:0!important;
  }
  #examDashboard .ex-dash-main{
    grid-column:1!important;
    grid-row:1!important;
    display:grid!important;
    grid-template-rows:auto minmax(0,1fr)!important;
    width:100%!important;
    height:100%!important;
    min-height:0!important;
    overflow:hidden!important;
  }
  #examDashboard .ex-dash-sidebar,
  html[data-exam-dash-sidebar="collapsed"] #examDashboard .ex-dash-sidebar{
    position:relative!important;
    inset:auto!important;
    grid-column:1!important;
    grid-row:2!important;
    display:block!important;
    width:100%!important;
    height:auto!important;
    min-height:calc(66px + env(safe-area-inset-bottom,0px))!important;
    max-height:none!important;
    padding:5px 6px env(safe-area-inset-bottom,0px)!important;
    margin:0!important;
    overflow:hidden!important;
    border:0!important;
    border-top:1px solid rgba(137,174,255,.17)!important;
    background:rgba(4,9,18,.98)!important;
    box-shadow:0 -10px 28px rgba(0,0,0,.3)!important;
    z-index:10!important;
  }
  #examDashboard .ex-dash-brand,#examDashboard .ex-dash-private{display:none!important}
  #examDashboard .ex-dash-nav{
    display:grid!important;
    grid-template-columns:repeat(6,minmax(0,1fr))!important;
    grid-auto-rows:60px!important;
    align-items:stretch!important;
    gap:2px!important;
    width:100%!important;
    height:60px!important;
    padding:0!important;
    overflow:hidden!important;
  }
  #examDashboard .ex-dash-nav button,
  html[data-exam-dash-sidebar="collapsed"] #examDashboard .ex-dash-nav button{
    display:flex!important;
    flex-direction:column!important;
    align-items:center!important;
    justify-content:center!important;
    gap:3px!important;
    width:100%!important;
    min-width:0!important;
    min-height:58px!important;
    height:58px!important;
    padding:5px 1px!important;
    border-radius:10px!important;
    box-shadow:none!important;
    font-size:clamp(7px,2.25vw,10px)!important;
    line-height:1!important;
    text-align:center!important;
    white-space:nowrap!important;
    overflow:hidden!important;
  }
  #examDashboard .ex-dash-nav button.active{box-shadow:inset 0 3px 0 var(--ex-blue,#7aa7ff)!important}
  #examDashboard .ex-dash-nav .ex-svg,html[data-exam-dash-sidebar="collapsed"] #examDashboard .ex-dash-nav .ex-svg{width:19px!important;height:19px!important}
  #examDashboard .ex-dash-topbar{
    display:grid!important;
    grid-template-columns:minmax(0,1fr) auto!important;
    grid-template-areas:"greeting metrics" "search search"!important;
    align-items:center!important;
    gap:9px 10px!important;
    min-height:0!important;
    padding:calc(9px + env(safe-area-inset-top,0px)) 11px 10px!important;
    border-bottom-color:rgba(137,174,255,.12)!important;
  }
  #examDashboard .ex-dash-sidebar-toggle{display:none!important}
  #examDashboard .ex-dash-greeting{grid-area:greeting!important;gap:2px!important}
  #examDashboard .ex-dash-greeting strong{font-size:14px!important}
  #examDashboard .ex-dash-greeting>span{font-size:10px!important}
  #examDashboard .ex-account-badge{min-height:21px!important;padding:3px 7px!important;font-size:8px!important}
  #examDashboard .ex-dash-global-search{grid-area:search!important;min-height:42px!important}
  #examDashboard .ex-dash-metrics{
    grid-area:metrics!important;
    display:flex!important;
    justify-content:flex-end!important;
    gap:5px!important;
    max-width:min(52vw,320px)!important;
    overflow-x:auto!important;
    overflow-y:hidden!important;
    scrollbar-width:none!important;
    padding:1px!important;
  }
  #examDashboard .ex-dash-metrics::-webkit-scrollbar{display:none!important}
  #examDashboard .ex-metric-pill,#examDashboard .ex-icon-label-btn{min-height:36px!important;padding:6px 8px!important;border-radius:11px!important;flex:0 0 auto!important}
  #examDashboard .ex-metric-pill strong,#examDashboard .ex-icon-label-btn strong{font-size:9px!important}
  #examDashboard .ex-metric-pill>span,#examDashboard .ex-icon-label-btn>span{width:17px!important;height:18px!important}
  #examDashboard .ex-metric-special,#examDashboard .ex-dash-flame{width:16px!important;height:19px!important}
  #examDashboard .ex-icon-label-btn strong{display:none!important}
  #examDashboard .ex-dash-panel{
    width:100%!important;
    height:100%!important;
    min-height:0!important;
    padding:14px 12px calc(18px + env(safe-area-inset-bottom,0px))!important;
    overflow-y:auto!important;
    overflow-x:hidden!important;
    scrollbar-gutter:auto!important;
  }
  #examDashboard .ex-dash-panel>*{width:100%!important;max-width:100%!important}
  #examDashboard .ex-dash-page,#examDashboard .ex-dash-overview,#examDashboard .ex-minimal-classrooms{gap:13px!important}
  #examDashboard .ex-minimal-welcome,#examDashboard .ex-identity-strip,#examDashboard .ex-current-learning,#examDashboard .ex-dash-section-head,#examDashboard .ex-room-toolbar,#examDashboard .ex-room-filters,#examDashboard .ex-search-box,#examDashboard .ex-library-toolbar,#examDashboard .ex-project-toolbar{width:100%!important;min-width:0!important;max-width:100%!important}
  #examDashboard .ex-room-grid,#examDashboard .ex-project-grid,#examDashboard .ex-library-grid,#examDashboard .ex-settings-grid{grid-template-columns:minmax(0,1fr)!important;gap:11px!important}
  #examDashboard .ex-room-toolbar,#examDashboard .ex-library-toolbar,#examDashboard .ex-project-toolbar{align-items:stretch!important}
  #examDashboard .ex-room-toolbar>* ,#examDashboard .ex-library-toolbar>* ,#examDashboard .ex-project-toolbar>*{min-width:0!important;max-width:100%!important}
  #examDashboard .ex-room-filters,#examDashboard .ex-segmented,#examDashboard .ex-card-actions,#examDashboard .ex-room-card-actions,#examDashboard .ex-dash-actions{overflow-x:auto!important;flex-wrap:nowrap!important;scrollbar-width:none!important;padding-bottom:2px!important}
  #examDashboard .ex-room-filters::-webkit-scrollbar,#examDashboard .ex-segmented::-webkit-scrollbar,#examDashboard .ex-card-actions::-webkit-scrollbar,#examDashboard .ex-room-card-actions::-webkit-scrollbar,#examDashboard .ex-dash-actions::-webkit-scrollbar{display:none!important}
  #examDashboard .ex-room-filters>* ,#examDashboard .ex-segmented>* ,#examDashboard .ex-card-actions>* ,#examDashboard .ex-room-card-actions>* ,#examDashboard .ex-dash-actions>*{flex:0 0 auto!important}
  #examDashboard .ex-room-card,#examDashboard .ex-project-card,#examDashboard .ex-library-card,#examDashboard .ex-dash-card,#examDashboard .ex-settings-card,#examDashboard .ex-current-learning,#examDashboard .ex-identity-card{border-radius:16px!important;box-shadow:0 10px 26px rgba(0,0,0,.16)!important}
  #examDashboard .ex-context-menu{
    left:max(10px,env(safe-area-inset-left,0px))!important;
    right:max(10px,env(safe-area-inset-right,0px))!important;
    top:auto!important;
    bottom:calc(72px + env(safe-area-inset-bottom,0px))!important;
    width:auto!important;
    min-width:0!important;
    max-width:none!important;
    padding:8px!important;
    border-radius:17px!important;
  }
  #examDashboard .ex-context-menu button{min-height:48px!important;font-size:14px!important}
  #examDashboard .ex-dashboard-modal{align-items:flex-end!important;padding:10px 10px calc(10px + env(safe-area-inset-bottom,0px))!important}
  #examDashboard .ex-dashboard-modal>*{width:100%!important;max-width:100%!important;max-height:min(86dvh,760px)!important;border-radius:22px 22px 16px 16px!important}
}

@media (max-width:430px){
  #examDashboard .ex-dash-topbar{grid-template-columns:minmax(0,1fr)!important;grid-template-areas:"greeting" "metrics" "search"!important;gap:7px!important}
  #examDashboard .ex-dash-metrics{max-width:100%!important;justify-content:flex-start!important}
  #examDashboard .ex-metric-pill,#examDashboard .ex-icon-label-btn{min-height:34px!important;padding:5px 7px!important}
  #examDashboard .ex-dash-nav button,html[data-exam-dash-sidebar="collapsed"] #examDashboard .ex-dash-nav button{font-size:7px!important}
  #examDashboard .ex-dash-panel{padding-inline:10px!important}
}

@media (prefers-reduced-motion:reduce){
  #examDashboard *,#examDashboard *::before,#examDashboard *::after{scroll-behavior:auto!important;transition-duration:.001ms!important;animation-duration:.001ms!important;animation-iteration-count:1!important}
}


/* Classroom source manager · 2026-08-06 */
.ex-source-manager-copy{margin:0 0 14px;color:var(--muted);line-height:1.55}
.ex-classroom-source-upload{margin-bottom:12px}
.ex-source-replan-choice{margin:12px 0;padding:12px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.035)}
.ex-source-replan-choice label{display:flex;align-items:flex-start;gap:10px;cursor:pointer}
.ex-source-replan-choice input{margin-top:3px}
.ex-source-replan-choice span,.ex-source-replan-choice strong,.ex-source-replan-choice small{display:block}
.ex-source-replan-choice small{margin-top:3px;color:var(--muted);line-height:1.35}
.ex-source-manager-status{min-height:20px;margin:8px 0 10px;color:var(--muted);font-size:13px}
.ex-source-manager-status.success{color:#82e8b4}.ex-source-manager-status.error{color:#ff9caa}
.ex-source-list{display:grid;gap:8px}
.ex-source-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 12px;border:1px solid var(--line);border-radius:13px;background:rgba(255,255,255,.035)}
.ex-source-row-copy{min-width:0}.ex-source-row-copy strong,.ex-source-row-copy small{display:block}.ex-source-row-copy small{margin-top:4px;color:var(--muted)}
.ex-source-status{flex:0 0 auto;padding:5px 8px;border:1px solid rgba(121,224,171,.28);border-radius:999px;background:rgba(46,160,105,.12);color:#9ff0c1;font-size:11px;font-weight:800}


/* Exam Mode data-truth alignment — evidence labels only; no scroll ownership here. */
.ex-data-status{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin:0 0 16px;padding:13px 14px;border:1px solid var(--ex-line,#ddd);border-radius:16px;background:color-mix(in srgb,var(--ex-surface,#fff) 94%,transparent)}
.ex-data-status>div:first-child{min-width:0}.ex-data-status-label{display:block;margin-bottom:3px;font-size:.7rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;opacity:.62}.ex-data-status strong{display:block;font-size:.94rem}.ex-data-status p{margin:4px 0 0;font-size:.82rem;line-height:1.45;opacity:.74}.ex-data-status-actions{flex:0 0 auto}.ex-data-status-actions a{display:inline-flex;align-items:center;min-height:32px;padding:0 10px;border:1px solid currentColor;border-radius:999px;font-size:.75rem;font-weight:800;text-decoration:none}.ex-data-status.truth-missing,.ex-room-badge.truth-missing,.ex-data-truth-chip.truth-missing{--truth-accent:#a03a2a}.ex-data-status.truth-partial,.ex-room-badge.truth-partial,.ex-data-truth-chip.truth-partial{--truth-accent:#9a6a05}.ex-data-status.truth-framework,.ex-room-badge.truth-framework,.ex-data-truth-chip.truth-framework{--truth-accent:#6157a8}.ex-data-status.truth-mapped,.ex-room-badge.truth-mapped,.ex-data-truth-chip.truth-mapped{--truth-accent:#287650}.ex-data-status.truth-locator,.ex-room-badge.truth-locator,.ex-data-truth-chip.truth-locator{--truth-accent:#1f6f93}.ex-data-status[class*="truth-"]{border-color:color-mix(in srgb,var(--truth-accent,#777) 34%,var(--ex-line,#ddd));box-shadow:inset 3px 0 0 var(--truth-accent,#777)}.ex-room-badge[class*="truth-"]{border-color:color-mix(in srgb,var(--truth-accent,#777) 45%,transparent);color:var(--truth-accent,#555)}
.ex-data-truth-chip{display:inline-flex;align-items:center;max-width:min(34vw,260px);min-height:28px;padding:5px 9px;border:1px solid color-mix(in srgb,var(--truth-accent,#777) 45%,transparent);border-radius:999px;color:var(--truth-accent,#555);background:color-mix(in srgb,var(--ex-surface,#fff) 92%,transparent);font-size:.7rem;font-weight:800;line-height:1.2;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;vertical-align:middle}
.ex-data-transparency-card .ex-truth-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-top:12px}.ex-truth-stats span{display:flex;flex-direction:column;gap:2px;padding:10px;border:1px solid var(--ex-line,#ddd);border-radius:12px}.ex-truth-stats strong{font-size:1rem}.ex-truth-stats small{font-size:.72rem;opacity:.68}
@media(max-width:720px){.ex-data-status{flex-direction:column;gap:9px;padding:11px 12px}.ex-data-status-actions{width:100%}.ex-data-status-actions a{width:100%;justify-content:center}.ex-data-truth-chip{max-width:48vw;font-size:.66rem}.ex-data-transparency-card .ex-truth-stats{grid-template-columns:1fr 1fr}}


/* Exam dashboard owned confirmation + inline rename (2026-08-08) */
.ex-confirm-backdrop{position:fixed;inset:0;z-index:100000;background:rgba(3,5,10,.72);display:grid;place-items:center;padding:20px;opacity:0;transition:opacity .14s ease}.ex-confirm-backdrop[hidden]{display:none}.ex-confirm-backdrop.open{opacity:1}.ex-confirm-dialog{width:min(440px,calc(100vw - 32px));background:#0d111b;border:1px solid rgba(239,68,68,.48);border-radius:22px;padding:24px;box-shadow:0 24px 80px rgba(0,0,0,.55);color:#f8fafc}.ex-confirm-icon{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;background:rgba(239,68,68,.12);border:1px solid rgba(239,68,68,.36);color:#fca5a5;font-weight:800;margin-bottom:14px}.ex-confirm-dialog h2{margin:0 0 8px;font-size:22px}.ex-confirm-dialog p{margin:0;color:#aeb6c6;line-height:1.55}.ex-confirm-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:22px}.ex-confirm-actions .ex-btn{min-width:118px}.ex-room-inline-rename{width:min(100%,360px);font:inherit;font-weight:750;color:#f8fafc;background:#090d16;border:1px solid #86a2ff;border-radius:9px;padding:6px 9px;outline:none;box-shadow:0 0 0 3px rgba(134,162,255,.16)}.ex-room-card[data-renaming="1"]{cursor:default}.ex-room-card[data-renaming="1"] .ex-room-inline-rename{cursor:text}@media(max-width:640px){.ex-confirm-dialog{border-radius:18px;padding:20px}.ex-confirm-actions{display:grid;grid-template-columns:1fr 1fr}.ex-confirm-actions .ex-btn{min-width:0}.ex-room-inline-rename{font-size:16px}}


/* Exam Mode V3.4 — Teaching Experience Stabilization */
.ex-pill,.ex-context-chip,.ex-source-status,.ex-data-truth-chip{font:inherit;font-size:.78rem;font-weight:760;line-height:1.2;letter-spacing:0;text-transform:none}
.ex-teach-slide h2{font-size:clamp(1.55rem,2.6vw,2.65rem)!important;line-height:1.08!important;max-width:22ch;margin-bottom:12px!important}
.ex-teach-slide .ex-kicker,.ex-slide-label{font-size:.72rem!important;letter-spacing:.07em!important;text-transform:none!important}
.ex-teach-slide .ex-teach-copy{font-size:clamp(.96rem,1.2vw,1.08rem);line-height:1.58;max-width:72ch}
.ex-worked-solution{display:grid;gap:11px;margin-top:16px}
.ex-worked-part{padding:12px 14px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.035)}
.ex-worked-part>strong{display:block;margin-bottom:5px;font-size:.76rem;letter-spacing:.04em;text-transform:uppercase;color:var(--muted)}
.ex-worked-steps{margin:6px 0 0;padding-left:22px}.ex-worked-steps li{margin:7px 0;line-height:1.55}
.ex-worked-part.final{border-color:rgba(223,184,74,.42);background:rgba(223,184,74,.08)}
.ex-question-context{margin:0 0 12px;padding:11px 13px;border:1px solid rgba(134,162,255,.25);border-radius:13px;background:rgba(98,126,215,.08)}
.ex-question-context strong{display:block;margin-bottom:4px;font-size:.76rem;color:var(--muted)}
.ex-answer-dropzone,.ex-classroom-source-upload{display:grid;place-items:center;gap:3px;min-height:76px;padding:13px;border:1px dashed rgba(167,139,250,.5);border-radius:14px;background:rgba(167,139,250,.05);cursor:pointer;transition:border-color .15s ease,background .15s ease,transform .15s ease}
.ex-answer-dropzone.is-dragover,.ex-classroom-source-upload.is-dragover{border-color:#b7c7ff;background:rgba(134,162,255,.12);transform:translateY(-1px)}
.ex-question-options{gap:8px}.ex-question-option{min-height:46px;padding:10px 12px!important}.ex-option-copy{line-height:1.35}
.ex-grade-result .ex-btn{margin-top:10px}
.ex-mentor-compose{position:relative;grid-template-columns:auto auto minmax(0,1fr) auto!important;align-items:end}
.ex-mentor-attach{display:grid;place-items:center;width:38px;height:38px;border:1px solid var(--line);border-radius:11px;cursor:pointer;font-size:22px;line-height:1;background:rgba(255,255,255,.04)}
.ex-mentor-compose.is-dragover{outline:2px dashed #9eb0ff;outline-offset:-5px;background:rgba(134,162,255,.09)}
.ex-mentor-upload-status{position:absolute;left:12px;bottom:100%;max-width:75%;padding:2px 6px;color:var(--muted);font-size:11px;pointer-events:none}
html[data-exam-teacher-helper-open] #examClassroom .ex-class-main{padding-right:min(35vw,430px)}
.ex-teacher-context .ex-context-chip{max-width:100%;white-space:normal}
.ex-source-row,.ex-source-upload,.ex-context-chip,.ex-pill{font-family:inherit}
.ex-class-step-meta{font-size:.78rem;color:var(--muted)}
@media(min-width:1050px){
  .ex-teach-slide[data-has-question="1"]{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(390px,.95fr);column-gap:28px;row-gap:10px;align-items:start}
  .ex-teach-slide[data-has-question="1"]>.ex-learning-route-strip,.ex-teach-slide[data-has-question="1"]>.ex-slide-label,.ex-teach-slide[data-has-question="1"]>.ex-question-origin{grid-column:1/-1}
  .ex-teach-slide[data-has-question="1"]>h2,.ex-teach-slide[data-has-question="1"]>.ex-teach-copy,.ex-teach-slide[data-has-question="1"]>.ex-question-prompt{grid-column:1}
  .ex-teach-slide[data-has-question="1"]>.ex-question-form{grid-column:2;grid-row:2 / span 10;margin-top:0;max-height:calc(100dvh - 250px);overflow:auto;padding-right:4px}
  .ex-teach-slide[data-has-question="1"] h2{font-size:clamp(1.4rem,2vw,2.15rem)!important;max-width:24ch}
  .ex-teach-slide[data-has-question="1"] .ex-question-options{display:grid;grid-template-columns:1fr}
}
@media(max-width:1049px){html[data-exam-teacher-helper-open] #examClassroom .ex-class-main{padding-right:0}.ex-teach-slide[data-has-question="1"]{display:block}}
@media(max-width:720px){.ex-teach-slide h2{font-size:1.55rem!important}.ex-mentor-compose{grid-template-columns:auto auto minmax(0,1fr) auto!important}.ex-answer-dropzone{min-height:68px}}


/* Exam Mode V3.5 — user-side fixes: compact teaching hierarchy, rendered-first notes, native mobile controls. */
.ex-notebook-edit{margin-top:12px;border-top:1px solid rgba(166,187,230,.12);padding-top:10px}.ex-notebook-edit>summary{cursor:pointer;color:var(--ex-muted);font-size:12px;font-weight:800;list-style:none}.ex-notebook-edit>summary::-webkit-details-marker{display:none}.ex-notebook-edit>summary::before{content:"✎ ";color:var(--ex-cyan)}.ex-notebook-edit[open]>summary{margin-bottom:10px}.ex-notebook-formula+.ex-notebook-edit{margin-top:10px}
.ex-stage-header{padding-top:clamp(18px,2.2vw,30px);padding-bottom:10px}.ex-stage-header h1{font-size:clamp(30px,4vw,58px);line-height:1.02;margin:6px 0 8px}.ex-stage-header .ex-kicker{font-size:11px;letter-spacing:.08em}.ex-stage-header p{margin-top:4px}
@media(max-width:900px){
  html[data-explainables-surface="mobile"] .ex-pill-history{display:none!important}
  html[data-explainables-surface="mobile"] .ex-pill-controls{position:fixed;display:flex!important;right:12px;left:auto;top:auto;bottom:116px;width:44px;min-width:44px;height:44px;min-height:44px;padding:0;gap:0;border-radius:50%;writing-mode:horizontal-tb;z-index:64}
  html[data-explainables-surface="mobile"] .ex-pill-controls svg{width:20px!important;height:20px!important;min-width:20px;min-height:20px;flex:0 0 20px;fill:none;stroke:currentColor}
  html[data-explainables-surface="mobile"] .ex-pill-controls span{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
  html[data-explainables-surface="mobile"] .ex-stage-header{padding:16px 16px 8px}
  html[data-explainables-surface="mobile"] .ex-stage-header h1{font-size:clamp(25px,8vw,34px);margin:4px 0 6px}
  html[data-explainables-surface="mobile"] .ex-stage-header p{font-size:12px;line-height:1.4}
  html[data-explainables-surface="mobile"] .ex-stage-body{padding:8px 14px 22px}
  html[data-explainables-surface="mobile"] .ex-current-block{max-width:none;min-width:0}
  html[data-explainables-surface="mobile"] .ex-current-block small{display:none}
  html[data-explainables-surface="mobile"] .ex-current-block strong{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  html[data-explainables-surface="mobile"] .ex-question-form{margin-top:12px}
}

/* Exam Mode v3.5 — passive toasts must never block classroom controls */
.ex-toast{pointer-events:none}
.ex-toast .ex-toast-close{pointer-events:auto}
/* V3.6 — Time Reality / Rescue Planning */
.ex-time-reality{margin:22px 0 0;padding:20px;border-radius:24px;border:1px solid var(--ex-line);text-align:left;display:grid;gap:18px;background:rgba(255,255,255,.04)}
.ex-time-reality.ok{border-color:rgba(87,217,154,.34);background:rgba(87,217,154,.07)}
.ex-time-reality.tight{border-color:rgba(240,202,80,.5);background:rgba(240,202,80,.08)}
.ex-time-reality.danger{border-color:rgba(255,90,105,.62);background:linear-gradient(145deg,rgba(120,20,36,.28),rgba(255,90,105,.08));box-shadow:0 18px 55px rgba(120,20,36,.14)}
.ex-time-reality-head{display:grid;gap:7px}.ex-time-reality-head strong{font-size:21px}.ex-time-reality.danger .ex-time-reality-head strong{color:#ffb5bf}.ex-time-reality.tight .ex-time-reality-head strong{color:#ffe48b}.ex-time-reality-head span{color:var(--ex-muted);line-height:1.55}
.ex-time-reality-metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.ex-time-reality-metrics>div{padding:13px 14px;border:1px solid rgba(255,255,255,.08);border-radius:16px;background:rgba(0,0,0,.13)}.ex-time-reality-metrics b{display:block;font-size:22px}.ex-time-reality-metrics span{display:block;margin-top:4px;color:var(--ex-muted);font-size:11px;text-transform:uppercase;letter-spacing:.07em}
.ex-coverage-preview{display:grid;gap:5px;padding:14px 16px;border-radius:16px;background:rgba(255,255,255,.045)}.ex-coverage-preview span{color:var(--ex-muted);line-height:1.45}.ex-time-reality-controls{display:grid;gap:14px}.ex-time-reality-controls>.ex-quick-pills{margin-bottom:0}.ex-custom-study-time{max-width:320px}.ex-coverage-strategy{padding:16px 17px}.ex-coverage-strategy .ex-quick-pills{margin-bottom:0}
.ex-time-block[data-coverage-mode="rapid_revision"]{border-color:rgba(240,202,80,.28)}.ex-time-block[data-coverage-mode="recall_only"]{border-color:rgba(155,220,255,.24)}.ex-time-block[data-coverage-mode="if_time_remains"]{opacity:.72}
@media(max-width:760px){.ex-time-reality{padding:16px;border-radius:20px}.ex-time-reality-metrics{grid-template-columns:1fr 1fr}.ex-time-reality-metrics b{font-size:18px}.ex-time-reality-head strong{font-size:18px}}

/* V3.6.1 — wizard primary-action style hardening.
   Keep Continue visually consistent even if a renderer/test harness drops generic button classes. */
.ex-wizard-nav #examWizardContinue{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:52px;
  min-width:min(620px,60vw);
  padding:0 22px;
  border:1px solid rgba(155,220,255,.48);
  border-radius:999px;
  background:linear-gradient(135deg,#6085f4,#88b6ff);
  color:#071020;
  font:inherit;
  font-weight:900;
  line-height:1;
  cursor:pointer;
  box-shadow:0 16px 48px rgba(96,133,244,.35);
  transition:transform .18s ease,background .18s ease,border-color .18s ease,box-shadow .18s ease,opacity .18s ease;
  -webkit-appearance:none;
  appearance:none;
}
.ex-wizard-nav #examWizardContinue:not(:disabled):hover{
  transform:translateY(-2px);
  background:linear-gradient(135deg,#6d90fa,#96c2ff);
  box-shadow:0 18px 54px rgba(96,133,244,.43);
}
.ex-wizard-nav #examWizardContinue:not(:disabled):active{transform:translateY(1px) scale(.995)}
.ex-wizard-nav #examWizardContinue:focus-visible{outline:3px solid rgba(155,220,255,.85);outline-offset:3px}
.ex-wizard-nav #examWizardContinue:disabled{
  opacity:.5;
  cursor:not-allowed;
  transform:none;
  background:linear-gradient(135deg,rgba(96,133,244,.68),rgba(136,182,255,.68));
  border-color:rgba(155,220,255,.25);
  box-shadow:0 8px 26px rgba(96,133,244,.16);
}
@media(max-width:760px){
  .ex-wizard-nav #examWizardContinue{width:100%;min-width:0;min-height:50px;padding-inline:12px;font-size:13px}
}

/* V3.6.2 — selection cards own their full surface. Nested copy cannot steal the
   tap/click; explicit controls such as topic tags/check buttons remain interactive. */
.ex-card-button{cursor:pointer;touch-action:manipulation}
.ex-card-button>strong,.ex-card-button>span:not(.ex-check),.ex-topic-card>strong{pointer-events:none}


/* Exam Mode V3.6.4 — entitlement-owned, background Exam Memory uploads. */
.ex-upload-background-note{display:flex;align-items:flex-start;gap:8px;margin:14px 0;padding:13px 15px;border:1px solid rgba(134,162,255,.22);border-radius:16px;background:rgba(134,162,255,.065);text-align:left}.ex-upload-background-note strong{white-space:nowrap;color:var(--ex-cyan)}.ex-upload-background-note span{color:var(--ex-muted);line-height:1.45}
.ex-file-card{display:block!important}.ex-file-summary{display:grid;grid-template-columns:auto minmax(0,1fr) auto auto auto;align-items:center;gap:12px}.ex-file-icon-shell,.ex-source-file-icon{position:relative;display:grid;place-items:center;width:42px;height:42px;border-radius:13px;background:rgba(104,139,255,.14);font-size:20px;flex:0 0 auto}.ex-file-spinner,.ex-source-spinner{position:absolute;inset:-3px;border:2px solid rgba(155,220,255,.18);border-top-color:var(--ex-cyan);border-radius:50%;animation:exFileSpin .85s linear infinite;pointer-events:none}@keyframes exFileSpin{to{transform:rotate(360deg)}}
.ex-file-pill{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:800}.ex-file-size{white-space:nowrap;color:var(--ex-muted);font-size:12px}.ex-file-upload-state,.ex-source-status{display:inline-flex;align-items:center;justify-content:center;min-height:28px;padding:0 10px;border-radius:999px;border:1px solid var(--ex-line);font-size:11px;font-weight:850;white-space:nowrap}.ex-file-upload-state.processing,.ex-source-status.processing{color:#c7dbff;border-color:rgba(134,162,255,.34);background:rgba(134,162,255,.08)}.ex-file-upload-state.ready{color:#bff6d1;border-color:rgba(78,211,132,.3);background:rgba(78,211,132,.07)}.ex-file-upload-state.error,.ex-source-status.error{color:#ffd0d7;border-color:rgba(255,117,135,.36);background:rgba(255,117,135,.08)}.ex-file-card.is-error,.ex-source-row.error{border-color:rgba(255,117,135,.32)!important}.ex-file-error{margin:9px 0 0 54px;color:#ffb9c4;font-size:12px;line-height:1.45}.ex-file-settings{margin:14px 0 0 54px}.ex-source-row.pending{grid-template-columns:auto minmax(0,1fr) auto}.ex-source-row.pending.processing{border-color:rgba(134,162,255,.25)}
.ex-classroom-source-upload.is-dragover,.ex-mentor-compose.is-dragover{box-shadow:inset 0 0 0 2px rgba(183,199,255,.75)}
@media(max-width:720px){.ex-upload-background-note{display:grid;gap:4px}.ex-upload-background-note strong{white-space:normal}.ex-file-summary{grid-template-columns:auto minmax(0,1fr) auto}.ex-file-size{grid-column:2}.ex-file-upload-state{grid-column:3;grid-row:1 / span 2}.ex-file-actions{grid-column:1/-1;display:flex;flex-wrap:wrap;margin-left:54px}.ex-file-settings{margin-left:0}.ex-file-error{margin-left:0}.ex-dropzone{min-height:180px;padding:22px 16px}.ex-source-row.pending{grid-template-columns:auto minmax(0,1fr)}.ex-source-row.pending .ex-source-status{grid-column:2;justify-self:start}}

/* ==========================================================================\n   Exam setup search + embedded leaderboard — 20260814\n   ========================================================================== */
.ex-wizard-search{
  display:block;
  width:min(100%,760px);
  margin:0 auto 18px;
}
.ex-wizard-search .ex-input{width:100%}
.ex-wizard-search-tools{width:100%;margin:0 0 18px}
.ex-wizard-search-tools #examTopicSearch{min-width:min(360px,100%);flex:1 1 360px}

.ex-exam-leaderboard{display:block;width:100%;min-width:0;max-width:none;padding:0!important}
.ex-exam-real-leaderboard-host{display:block;width:100%;min-width:0;max-width:100%}

/* Answer scoring card — 20260814 */
.ex-grade-result{margin-top:16px;border:1px solid rgba(255,255,255,.11);border-radius:22px;overflow:hidden;background:linear-gradient(180deg,rgba(15,16,22,.98),rgba(8,9,12,.98))}
.ex-grade-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:17px 19px;border-bottom:1px solid rgba(255,255,255,.08)}.ex-grade-head strong{font-size:16px}.ex-grade-head span{color:var(--muted);font-size:12px}
.ex-grade-score-grid{display:grid;grid-template-columns:1fr 1fr;border-bottom:1px solid rgba(255,255,255,.08)}.ex-grade-score-box{padding:18px 20px}.ex-grade-score-box+.ex-grade-score-box{border-left:1px solid rgba(255,255,255,.08)}.ex-grade-label{display:block;color:#dce1ed;font-size:12px;font-weight:800;margin-bottom:10px}.ex-grade-score-value{display:flex;align-items:flex-end;gap:7px;color:#4be17a;font-size:42px;font-weight:900;line-height:1}.ex-grade-score-total{color:#fff;font-size:20px}.ex-grade-grade-pill{display:inline-flex;padding:9px 14px;border-radius:12px;border:1px solid rgba(75,225,122,.34);background:rgba(25,126,56,.16);color:#56e487;font-size:17px;font-weight:850}.ex-grade-grade-pill.improving{color:#ffd86a;border-color:rgba(255,216,106,.34);background:rgba(112,78,14,.17)}.ex-grade-grade-pill.needs-work{color:#ff7c7c;border-color:rgba(255,124,124,.34);background:rgba(120,23,23,.17)}
.ex-grade-panel{margin:13px 18px 0;padding:14px 15px;border:1px solid rgba(255,255,255,.09);border-radius:16px;background:rgba(255,255,255,.018)}.ex-grade-panel h4{margin:0 0 10px;font-size:14px}.ex-grade-panel ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}.ex-grade-panel li{position:relative;padding-left:24px;line-height:1.55}.ex-grade-panel li:before{content:'✓';position:absolute;left:0;top:1px;width:17px;height:17px;border:1px solid #39bb65;border-radius:50%;display:grid;place-items:center;color:#51e381;font-size:10px;font-weight:900}.ex-grade-panel.improve li:before{content:'×';border-color:#df4444;color:#ff7070}.ex-grade-ideal{border-color:rgba(175,106,255,.25)}.ex-grade-ideal h4{color:#ca8dff}.ex-grade-followups{display:flex;flex-wrap:wrap;gap:9px;padding:17px 18px 19px}.ex-grade-followups .ex-btn.primary{background:#f4f4f6;color:#090a0e}
@media(max-width:760px){.ex-grade-head{align-items:flex-start;flex-direction:column}.ex-grade-score-grid{grid-template-columns:1fr}.ex-grade-score-box+.ex-grade-score-box{border-left:0;border-top:1px solid rgba(255,255,255,.08)}.ex-grade-panel{margin-left:12px;margin-right:12px}.ex-grade-followups{display:grid;padding:14px 12px 16px}.ex-grade-followups .ex-btn{width:100%;min-width:0}}

/* 2026-08-15 — responsive voxel generation surface. The hidden status list remains for semantic progress/error ownership. */
.ex-generating-card{width:min(1120px,calc(100vw - 32px));max-width:none;padding:clamp(18px,2vw,28px);overflow:hidden}
.ex-generating-orbit{display:none!important}
.ex-generating-voxel{position:relative;width:100%;height:clamp(300px,48vh,520px);overflow:hidden;border-radius:22px;border:1px solid rgba(129,140,248,.22);background:#020617;touch-action:none;cursor:pointer;box-shadow:0 16px 46px rgba(0,0,0,.24),0 0 42px rgba(99,102,241,.08);margin:0 0 clamp(20px,3vh,32px)}
.ex-generating-voxel canvas{display:block;width:100%;height:100%}
.ex-generating-card .ex-kicker{text-align:center;margin-top:0}
.ex-generating-card h1{text-align:center;font-size:clamp(34px,4.4vw,62px);margin:.35rem auto .6rem}
.ex-generating-rotating-copy{min-height:1.6em;text-align:center;margin:.25rem auto 0;max-width:760px;color:rgba(235,238,249,.7);transition:opacity .14s ease}
.ex-generation-status-sr{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
.ex-generation-bp{text-align:center;margin-top:12px}
.ex-generation-actions{justify-content:center}
#examApp ::selection{background:rgba(255,255,255,.96);color:#111827}#examApp ::-moz-selection{background:rgba(255,255,255,.96);color:#111827}
@media(max-width:760px){.ex-generating-card{width:calc(100vw - 20px);padding:12px}.ex-generating-voxel{height:clamp(280px,45vh,420px);border-radius:18px;margin-bottom:20px}.ex-generating-card h1{font-size:clamp(32px,10vw,46px)}.ex-generating-rotating-copy{font-size:14px}}

/* Exam pre-classroom selection actions reuse the platform Copy / Report bug / Feedback contract. */
#examPageSelectionToolbar{position:fixed;left:0;top:0;z-index:2147483644;pointer-events:none;opacity:0;transform:translate3d(-9999px,-9999px,0);transition:opacity .1s ease}#examPageSelectionToolbar.show{opacity:1;pointer-events:auto}#examPageSelectionToolbar .ex-select-toolbar{display:flex;gap:6px;padding:7px;border-radius:14px;border:1px solid rgba(255,255,255,.13);background:rgba(12,14,20,.96);box-shadow:0 10px 28px rgba(0,0,0,.28)}#examPageSelectionToolbar button{border:1px solid rgba(255,255,255,.11);background:rgba(255,255,255,.055);color:#f8fafc;border-radius:10px;padding:8px 10px;font:700 12px/1 "DM Sans",system-ui,sans-serif;cursor:pointer}#examPageSelectionToolbar button:hover,#examPageSelectionToolbar button:focus-visible{background:rgba(255,255,255,.1);outline:none}#examPageSelectionToolbar .ex-select-status{position:absolute;left:50%;top:calc(100% + 6px);transform:translateX(-50%);opacity:0;white-space:nowrap;border:1px solid rgba(255,255,255,.12);border-radius:999px;background:rgba(12,14,20,.96);color:#dbe5f4;padding:5px 8px;font:700 10px/1 "DM Sans",system-ui,sans-serif}#examPageSelectionToolbar .ex-select-status.show{opacity:1}.ex-core-fb-overlay{position:fixed;inset:0;z-index:2147483647;display:flex;align-items:center;justify-content:center;padding:18px;background:rgba(2,6,23,.66);backdrop-filter:blur(8px)}.ex-core-fb-box{width:min(520px,100%);max-height:calc(100vh - 36px);overflow:auto;border-radius:18px;border:1px solid rgba(148,163,184,.24);background:rgba(15,23,42,.98);box-shadow:0 24px 80px rgba(0,0,0,.42);color:#f8fafc;padding:20px;box-sizing:border-box;font-family:"DM Sans",system-ui,sans-serif}.ex-core-fb-head{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:14px}.ex-core-fb-title{font-size:20px;font-weight:900;margin:0 0 4px}.ex-core-fb-sub{font-size:13px;color:rgba(226,232,240,.68);line-height:1.4}.ex-core-fb-close{width:36px;height:36px;border-radius:11px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.06);color:#e2e8f0;cursor:pointer;font-size:18px}.ex-core-fb-field{display:block;margin-top:12px;color:rgba(226,232,240,.74);font-size:11px;font-weight:900;text-transform:uppercase;letter-spacing:.07em}.ex-core-fb-input,.ex-core-fb-textarea{display:block;width:100%;box-sizing:border-box;margin-top:7px;border-radius:12px;border:1px solid rgba(148,163,184,.24);background:rgba(15,23,42,.72);color:#f8fafc;padding:11px 12px;font:700 13px/1.45 "DM Sans",system-ui,sans-serif;outline:none}.ex-core-fb-textarea{min-height:130px;resize:vertical;text-transform:none;letter-spacing:normal}.ex-core-fb-selected{margin-top:12px;padding:10px 12px;border-radius:12px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);color:rgba(226,232,240,.76);font-size:12px;line-height:1.45;max-height:118px;overflow:auto;text-transform:none;letter-spacing:normal}.ex-core-fb-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:16px}.ex-core-fb-btn{border-radius:12px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.06);color:#e2e8f0;padding:10px 14px;font-weight:900;cursor:pointer}.ex-core-fb-send{background:#d4a843;border-color:#d4a843;color:#150f03}@media(max-width:640px){.ex-core-fb-overlay{align-items:flex-end;padding:10px}.ex-core-fb-actions{flex-direction:column-reverse}.ex-core-fb-btn{width:100%}}
/* Talk to Teacher is opt-in: its DOM never participates in layout/focus until the learner explicitly opens it. */
html:not([data-exam-mentor-open="1"]) #examApp #examMentorDrawer.ex-drawer.helper{display:none!important;visibility:hidden!important;pointer-events:none!important;content-visibility:hidden!important;position:fixed!important;inset:auto!important;width:0!important;height:0!important;overflow:hidden!important;}
html[data-exam-mentor-open="1"] #examApp #examMentorDrawer.ex-drawer.helper{content-visibility:visible;}

/* Classroom-only overlays must never escape into the Exam setup/dashboard stages. */
html:not([data-exam-classroom-active]) #examDrawerBackdrop,
html:not([data-exam-classroom-active]) #examControlsDrawer,
html:not([data-exam-classroom-active]) #examNotesDrawer,
html:not([data-exam-classroom-active]) #examMentorDrawer,
html:not([data-exam-classroom-active]) #examClassroomSourcesModal,
html:not([data-exam-classroom-active]) #examLiveGenerationVisual { display: none !important; }


/* Mastery v4 semantic emphasis: meaning first, colour secondary. */
#examApp .ex-semantic-keyword{font-weight:850;color:#e6bd5a;text-decoration-thickness:1px;text-underline-offset:3px}
#examApp .ex-semantic-emphasis{font-style:italic;color:#9dc6ff}
#examApp .ex-teach-copy strong:not(.ex-semantic-keyword){font-weight:820}
#examApp .ex-question-instruction strong,#examApp .ex-formula-card strong{color:#f2d788}
@media(prefers-contrast:more){#examApp .ex-semantic-keyword,#examApp .ex-semantic-emphasis{color:inherit;text-decoration:underline}}


/* 2026-08-18 — shared topic-picker de-duplication v1. */
#examWizard .ex-topic-custom-disclosure{
  display:block!important;
  grid-template-columns:none!important;
  padding:0!important;
  overflow:hidden!important;
}
#examWizard .ex-topic-custom-disclosure summary{
  list-style:none;
  cursor:pointer;
  padding:15px 17px;
  font-size:14px;
  font-weight:750;
  color:var(--ex-text);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
#examWizard .ex-topic-custom-disclosure summary::-webkit-details-marker{display:none}
#examWizard .ex-topic-custom-disclosure summary::after{content:"＋";color:var(--ex-muted);font-size:18px;font-weight:500}
#examWizard .ex-topic-custom-disclosure[open] summary::after{content:"−"}
#examWizard .ex-topic-custom-disclosure[open] summary{border-bottom:1px solid var(--ex-line)}
#examWizard .ex-topic-custom-copy{padding:13px 17px 0}
#examWizard .ex-topic-custom-copy p{margin:0!important}
#examWizard .ex-topic-custom-disclosure .ex-custom-topic-row{padding:13px 17px 17px!important}
#examWizard .ex-subject-topic-tools{grid-template-columns:minmax(170px,1fr) auto auto!important}

/* 2026-08-18 — mobile topic-picker de-duplication v1.
   One visible search controls all mapped chapter/topic cards. */
@media (max-width:760px){
  #examWizard .ex-wizard-search-tools{
    display:block!important;
    margin:0 0 12px!important;
  }
  #examWizard .ex-wizard-search-tools #examTopicSearch{
    width:100%!important;
    min-width:0!important;
    min-height:46px!important;
  }
  #examWizard .ex-topic-custom-disclosure{
    display:block!important;
    grid-template-columns:none!important;
    padding:0!important;
    margin:0 0 14px!important;
    overflow:hidden!important;
    background:rgba(255,255,255,.025)!important;
  }
  #examWizard .ex-topic-custom-disclosure summary{
    list-style:none;
    cursor:pointer;
    padding:14px 16px;
    font-size:14px;
    font-weight:750;
    color:var(--ex-text);
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:12px;
  }
  #examWizard .ex-topic-custom-disclosure summary::-webkit-details-marker{display:none}
  #examWizard .ex-topic-custom-disclosure summary::after{content:"＋";color:var(--ex-muted);font-size:18px;font-weight:500}
  #examWizard .ex-topic-custom-disclosure[open] summary::after{content:"−"}
  #examWizard .ex-topic-custom-disclosure[open] summary{border-bottom:1px solid var(--ex-line)}
  #examWizard .ex-topic-custom-copy{padding:12px 14px 0}
  #examWizard .ex-topic-custom-copy p{margin:0!important}
  #examWizard .ex-topic-custom-disclosure .ex-custom-topic-row{padding:12px 14px 14px!important}
  #examWizard .ex-subject-topic-tools{
    grid-template-columns:minmax(0,1fr) auto auto!important;
    gap:8px!important;
  }
  #examWizard .ex-subject-topic-tools .ex-select{grid-column:1/2!important;min-width:0!important}
  #examWizard .ex-subject-topic-tools .ex-btn{width:auto!important;min-width:0!important;padding-inline:11px!important;font-size:12px!important}
}
@media (max-width:430px){
  #examWizard .ex-subject-topic-tools{grid-template-columns:1fr 1fr!important}
  #examWizard .ex-subject-topic-tools .ex-select{grid-column:1/-1!important}
}