@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800;900&display=swap');
.response-board h3{margin-top:9px;font-size:18px}
.response-caption{font-size:11px;line-height:1.6;color:var(--muted);margin-top:8px}
.response-counts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;margin:18px 0 12px}
.response-counts>span{padding:10px 4px;border-radius:10px;text-align:center;font-size:10px;font-weight:800}
.response-counts strong{display:block;font-size:24px;line-height:1.3;font-variant-numeric:tabular-nums}
.response-counts .incorrect,.response-student.incorrect .response-badge{background:#fff1f0;color:#b42318}
.response-counts .correct,.response-student.correct .response-badge{background:#ecfdf3;color:#067647}
.response-counts .waiting,.response-student.waiting .response-badge{background:#f2f4f7;color:#667085}
.response-list{list-style:none;padding:0;margin:16px 0 0;display:grid;gap:9px;max-height:400px;overflow:auto;scrollbar-width:thin}
.response-student{padding:11px;border:1px solid var(--line);border-radius:12px;min-width:0}
.response-student.incorrect{border-color:#fecdca;background:#fffafa}
.response-student-head{display:flex;align-items:center;justify-content:space-between;gap:6px}
.response-student-head>strong{font-size:13px;min-width:0;overflow-wrap:anywhere}
.response-badge{padding:4px 6px;border-radius:6px;font-size:10px;font-weight:900;white-space:nowrap}
.response-choice{font-size:11px;color:var(--muted);margin-top:5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
:root{--ink:#172033;--muted:#667085;--brand:#4f46e5;--brand-dark:#4338ca;--line:#e4e8f0;--green:#059669;--amber:#b45309;--red:#b42318;--shadow:0 4px 8px -3px #18264b08,0 16px 40px -16px #273f7326;--radius:22px}
*{box-sizing:border-box}body{margin:0;color:var(--ink);font-family:Nunito,system-ui,sans-serif;background:linear-gradient(125deg,#eef2ff 0%,#f0fdfa 60%,#fffbeb 100%);min-height:100vh;-webkit-font-smoothing:antialiased}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:default;opacity:.48}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #a5b4fc;outline-offset:4px}a{color:var(--brand)}.hidden,[hidden]{display:none!important}.skip{position:fixed;left:12px;top:-80px;z-index:20;background:#fff;padding:12px}.skip:focus{top:12px}.site-head{height:86px;padding:0 clamp(18px,4vw,64px);display:flex;align-items:center;justify-content:space-between;gap:16px;border-bottom:1px solid #ffffff;background:#ffffffdc;backdrop-filter:blur(14px)}.brand-lockup{display:flex;align-items:center;gap:18px;min-width:0}.brand-lockup img{width:150px;height:auto;max-height:46px;object-fit:contain}.brand-lockup span{border-left:1px solid var(--line);padding-left:18px;font-size:18px;font-weight:800;letter-spacing:-.4px}.head-actions{display:flex;align-items:center;gap:14px}.connection{font-size:12px;font-weight:800;color:var(--green);display:flex;align-items:center;gap:7px}.connection::before{content:'';width:7px;height:7px;border-radius:50%;background:currentColor}.connection.offline{color:var(--amber)}main{max-width:1440px;margin:auto;padding:34px clamp(18px,4vw,64px) 60px}h1,h2,h3,p{margin:0}h1{font-size:clamp(28px,3vw,40px);line-height:1.15;letter-spacing:-1.1px;font-weight:900}h2{font-size:23px;letter-spacing:-.6px;font-weight:900}h3{font-size:16px;font-weight:900}p{line-height:1.7}.muted{color:var(--muted)}.eyebrow{font-size:11px;font-weight:900;letter-spacing:1.7px;text-transform:uppercase;color:var(--brand);display:block;margin-bottom:10px}.row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.between{justify-content:space-between}.stack{display:grid;gap:20px}.card{background:#fff;border:1px solid #ffffff;border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}.card.soft{background:#f8faff;border-color:var(--line);box-shadow:none}.btn{border:1px solid transparent;background:linear-gradient(135deg,#4f46e5,#6366f1);color:#fff;padding:12px 20px;border-radius:12px;font-weight:900;font-size:14px;min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;box-shadow:0 4px 8px #4f46e51a;transition:transform .15s,box-shadow .15s}.btn:hover:enabled{transform:translateY(-1px);box-shadow:0 6px 12px #4f46e52b}.btn.secondary{background:#fff;color:var(--ink);border-color:var(--line);box-shadow:none}.btn.ghost{background:transparent;color:var(--muted);box-shadow:none;padding:8px 12px}.btn.danger{background:#fff;color:var(--red);border-color:#fecdca;box-shadow:none}.btn.small{min-height:38px;font-size:12px;padding:8px 12px}.btn.wide{width:100%}.pill{display:inline-flex;align-items:center;border-radius:8px;padding:5px 10px;background:#eef2ff;color:var(--brand);font-weight:800;font-size:12px;line-height:1.5}.pill.green{background:#ecfdf3;color:#027a48}.pill.amber{background:#fffaeb;color:#b54708}.field{display:grid;gap:7px}.field label{font-size:12px;font-weight:900;color:#475467}.field input,.field select{width:100%;min-width:0;border:1px solid #d9deea;border-radius:11px;background:#fff;padding:11px 12px;color:var(--ink);min-height:46px}.fields{display:grid;grid-template-columns:1fr 1fr;gap:16px}.field.full{grid-column:1/-1}.error{background:#fff4f2;border:1px solid #fecdca;color:var(--red);padding:12px 16px;border-radius:12px;font-size:14px;margin-bottom:20px}.notice{background:#fffaeb;border:1px solid #fedf89;color:#93370d;border-radius:12px;padding:12px 16px;font-size:13px;line-height:1.6}
.educator-notice{background:#eef2ff;border-color:#c7d2fe;color:#312e81;font-size:15px;padding:18px 22px;margin-bottom:20px}.hero{display:flex;align-items:center;justify-content:space-between;gap:30px;margin-bottom:32px}.hero-copy{max-width:650px}.hero-copy p{margin-top:14px;font-size:16px;color:var(--muted)}.hero-art{width:140px;height:150px;object-fit:contain;filter:drop-shadow(0 12px 12px #4f46e518)}.lobby-grid{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(280px,1fr);gap:24px}.room-list{display:grid;gap:12px;margin-top:22px}.room-tile{padding:20px;background:#f8faff;border:1px solid var(--line);border-radius:15px;display:flex;align-items:center;justify-content:space-between;gap:14px}.room-tile h3{margin-bottom:6px}.mini-code{letter-spacing:2px;font-family:ui-monospace,monospace;font-weight:800}.empty{padding:35px 20px;text-align:center;background:#f8faff;border:1px dashed #ccd4e6;border-radius:16px;color:var(--muted);line-height:1.7}.auth-card{max-width:440px;margin:35px auto}.auth-card .stack{margin-top:24px}.auth-art{width:90px;height:90px;object-fit:contain;margin-bottom:18px}.workspace-title{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:24px}.workspace-title h1{font-size:29px}.workspace-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;align-items:start}.workspace-grid>*{min-width:0}.phase-track{list-style:none;margin:0 0 24px;padding:0;display:flex;gap:8px}.phase-track li{flex:1;display:flex;align-items:center;gap:8px;font-size:12px;font-weight:800;color:#98a2b3;border-bottom:3px solid #e4e8f0;padding:0 0 12px}.phase-track li span{width:22px;height:22px;display:grid;place-items:center;border-radius:50%;background:#e9edf5;font-size:10px;flex-shrink:0}.phase-track li.current{border-color:var(--brand);color:var(--brand)}.phase-track li.current span{background:var(--brand);color:white}.phase-track li.done{border-color:#a7f3d0;color:var(--green)}.setup-head{margin-bottom:24px}.setup-head p{font-size:14px;margin-top:8px;color:var(--muted)}details{border-top:1px solid var(--line);margin-top:22px;padding-top:18px}summary{cursor:pointer;font-size:13px;font-weight:900;color:#475467}details .fields{margin-top:18px}.setup-footer{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-top:26px;padding-top:22px;border-top:1px solid var(--line)}.setup-footer p{font-size:12px;color:var(--muted)}.join-panel{text-align:center}.join-panel .eyebrow{color:var(--muted)}.room-code{font-size:37px;letter-spacing:5px;font-weight:900;font-family:ui-monospace,monospace;color:var(--brand);margin:10px 0}.qr{min-height:100px;margin:16px auto;display:flex;justify-content:center}.qr img,.qr canvas{max-width:120px;height:auto}.qr-fallback{font-size:13px;color:var(--muted);padding:18px 0}.join-url{font-size:13px;overflow-wrap:anywhere}.people{display:grid;gap:9px;max-height:270px;overflow:auto;margin-top:16px}.person{display:flex;align-items:center;gap:10px;font-size:13px}.avatar{width:30px;height:30px;display:grid;place-items:center;flex-shrink:0;background:#eef2ff;color:var(--brand);font-weight:900;border-radius:10px}.person-name{flex:1;min-width:0;overflow-wrap:anywhere}.person .dot{width:7px;height:7px;border-radius:50%;background:#12b76a}.person .dot.away{background:#cbd5e1}.person button{background:transparent;border:0;color:#98a2b3;width:32px;height:32px;font-size:19px}.side-note{font-size:12px;color:var(--muted);margin-top:14px;line-height:1.6}.preparing{text-align:center;padding:46px 30px}.preparing img{width:105px;height:110px;object-fit:contain}.preparing h2{margin-top:18px}.preparing p{color:var(--muted);margin:12px auto 24px;max-width:430px}.loading-track{height:5px;max-width:250px;margin:24px auto;border-radius:6px;background:#eef2ff;overflow:hidden}.loading-track::after{content:'';display:block;width:40%;height:100%;background:#6366f1;border-radius:6px;animation:slide 1.6s ease-in-out infinite alternate}@keyframes slide{to{transform:translateX(150%)}}.ready-title{margin:14px 0}.ready-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:24px 0}.metric{padding:15px;background:#f8faff;border:1px solid #e9edf5;border-radius:14px}.metric strong{font-size:24px;font-weight:900;display:block}.metric span{font-size:11px;color:var(--muted);font-weight:800}.preview-item{padding:14px 0;border-bottom:1px solid var(--line)}.preview-item p{font-size:14px;margin:8px 0}.stage-meta{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:22px}.timer{font-size:26px;font-weight:900;font-variant-numeric:tabular-nums;color:var(--brand)}.timer-label{font-size:11px;color:var(--muted);display:block;text-align:right}.lesson-progress{height:4px;border-radius:4px;background:#eef2ff;margin:14px 0 26px;overflow:hidden}.lesson-progress span{display:block;background:#818cf8;height:100%;transition:width .25s}.stage-title{font-size:clamp(24px,2.7vw,34px);line-height:1.25;margin-bottom:20px;letter-spacing:-.8px}.stage-say{font-size:clamp(18px,2vw,24px);line-height:1.65;white-space:pre-line}.board{margin-top:24px;background:#f5f7ff;border:1px solid #dfe5fa;border-radius:18px;padding:26px;white-space:pre-wrap;font-size:clamp(18px,2vw,24px);line-height:1.65;font-weight:800;color:#343a72}.diagram{margin:18px auto;max-width:650px}.diagram svg{max-width:100%;height:auto;display:block;margin:auto}.stage-footer{display:flex;align-items:center;justify-content:space-between;gap:14px;border-top:1px solid var(--line);padding-top:22px;margin-top:28px}.stage-footer p{font-size:12px;color:var(--muted)}.question-title{font-size:clamp(22px,2.6vw,32px);line-height:1.5;font-weight:900;letter-spacing:-.5px;margin:22px 0}.paper-status{padding:13px 16px;background:#f0fdf8;border:1px solid #c2f0dc;color:#067647;border-radius:12px;font-size:13px;line-height:1.6}.options{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:22px}.option{position:relative;display:flex;align-items:center;gap:12px;background:#fff;border:2px solid var(--line);border-radius:14px;padding:16px;text-align:left;font-weight:800;font-size:16px;min-height:64px;color:var(--ink);overflow:hidden}.option .letter{display:grid;place-items:center;width:30px;height:30px;border-radius:8px;background:#f2f4f7;font-size:12px;flex-shrink:0}.option .option-text{flex:1;overflow-wrap:anywhere}.option.selected{border-color:#818cf8;background:#f5f3ff}.option.correct{border-color:#12b76a;background:#ecfdf3}.option.wrong{border-color:#fda29b;background:#fff4f2}.option .option-count{color:var(--muted);font-size:12px}.option:disabled{opacity:1}.option:disabled .letter{opacity:.6}.answer-status{min-height:30px;font-size:13px;color:var(--brand);font-weight:800;margin-top:16px}.explanation{background:#ecfdf3;border:1px solid #abefc6;border-radius:16px;padding:20px;margin-top:20px;line-height:1.75;white-space:pre-line}.explanation h3{color:#067647;margin-bottom:8px}.teacher-guide h3{margin:18px 0 8px}.teacher-guide p,.teacher-guide li{font-size:13px;line-height:1.7;color:#475467}.teacher-guide ul{padding-left:18px}.private-label{font-size:10px;letter-spacing:1px;text-transform:uppercase;font-weight:900;color:#98a2b3}.tally-metrics{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:16px}.tally-metrics strong{font-size:28px;display:block}.tally-metrics span{font-size:11px;color:var(--muted)}.table-wrap{overflow:auto;margin-top:18px}table{width:100%;border-collapse:collapse;text-align:left;font-size:13px}th{font-size:10px;letter-spacing:.6px;color:var(--muted);text-transform:uppercase;white-space:nowrap}td,th{padding:13px 10px;border-bottom:1px solid var(--line)}td:first-child{padding-left:0}td{vertical-align:top}.student-main{max-width:760px}.student-main .hero{margin-bottom:24px}.student-main .card{padding:30px}.student-main .options{grid-template-columns:1fr}.student-main .stage-say{font-size:21px}.student-main .question-title{font-size:25px}.student-main .room-code-input{text-transform:uppercase;letter-spacing:8px;text-align:center;font-family:ui-monospace,monospace;font-size:27px;font-weight:800}.student-main .welcome{text-align:center;padding:30px 12px}.student-main .welcome img{width:120px;height:130px;object-fit:contain;margin:20px auto}.student-main .welcome p{margin-top:12px}.student-name{font-size:12px;font-weight:900;max-width:160px;overflow-wrap:anywhere}.presentation main{max-width:1600px}.presentation .card{padding:clamp(28px,4vw,65px)}.presentation .stage-say{font-size:clamp(24px,3vw,40px)}.presentation .question-title{font-size:clamp(30px,3vw,46px)}.presentation .option{font-size:25px;padding:24px}.presentation .stage-title{font-size:38px}.presentation .board{font-size:30px}.presentation .stage-footer{display:none}.presentation .room-code{font-size:24px;margin:0}.presentation .welcome{text-align:center;padding:35px}.presentation .welcome img{width:150px}.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:#172033;color:white;border-radius:12px;padding:13px 22px;font-size:14px;z-index:20;max-width:90vw;box-shadow:var(--shadow)}dialog{border:0;border-radius:22px;padding:28px;max-width:420px;width:calc(100% - 36px);color:var(--ink);box-shadow:0 24px 80px #17203344}dialog::backdrop{background:#17203366;backdrop-filter:blur(4px)}dialog p{margin:14px 0 24px;color:var(--muted)}
@media(max-width:1100px){.workspace-grid{grid-template-columns:minmax(0,1fr) 260px}.card{padding:22px}.workspace-title{align-items:flex-start}.workspace-title .row{justify-content:flex-end}.brand-lockup img{width:130px}}
@media(max-width:820px){.workspace-grid,.lobby-grid{grid-template-columns:1fr}.workspace-side{display:grid;grid-template-columns:1fr 1fr;gap:18px}.workspace-side .card{margin:0}.site-head{height:auto;min-height:76px;padding-top:14px;padding-bottom:14px}.brand-lockup span{font-size:15px;padding-left:12px}.head-actions{gap:8px}.hero-art{width:100px;height:120px}.workspace-title{flex-direction:column;gap:14px}.workspace-title .row{justify-content:flex-start}.join-panel .qr{display:none}.phase-track li{font-size:11px}.card{border-radius:18px}}
@media(max-width:540px){main{padding-top:24px}.site-head{gap:12px;flex-wrap:wrap}.brand-lockup{gap:10px}.brand-lockup img{width:112px}.brand-lockup span{font-size:14px}.connection{font-size:10px}.head-actions .btn{padding:5px;min-height:32px;font-size:11px}.hero{gap:10px}.hero-art{width:75px;height:95px}.hero-copy p{font-size:14px}.fields{grid-template-columns:1fr}.field.full{grid-column:auto}.workspace-side{grid-template-columns:1fr}.options{grid-template-columns:1fr}.setup-footer,.stage-footer{align-items:stretch;flex-direction:column}.setup-footer .btn,.stage-footer>.btn{width:100%}.phase-track{gap:5px}.phase-track li{gap:5px;font-size:10px}.phase-track li span{width:18px;height:18px}.card,.student-main .card{padding:22px}.ready-grid{gap:8px}.metric{padding:12px}.metric strong{font-size:22px}.metric span{font-size:10px}.room-tile{padding:16px}.room-tile .btn{padding:8px 12px}.stage-meta{flex-wrap:wrap}.board{padding:18px}.student-name{max-width:120px}.stage-footer .row{justify-content:space-between}.presentation .option{font-size:20px}.presentation .stage-title{font-size:28px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}body{scroll-behavior:auto}}
@media print{.site-head,.workspace-side,.phase-track,.workspace-title,.btn,.toast,dialog{display:none!important}body{background:white}main{padding:0}.workspace-grid{display:block}.card{box-shadow:none;border:0}.table-wrap{overflow:visible}details{display:none}}