#page-classroom,#view-classroom{width:100%;max-width:none}#view-classroom{padding:28px clamp(16px,4vw,64px)}.classroom-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;align-items:end}.classroom-form label{display:grid;gap:8px;font-size:14px;font-weight:600}.classroom-form button{min-height:44px}.classroom-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}.classroom-actions button,.classroom-answers button,.classroom-retry button{min-height:44px}.classroom-stage{background:var(--card,#fff);border:1px solid var(--border,#dce3ec);border-radius:16px;padding:clamp(20px,3vw,40px);margin:24px 0;overflow-wrap:anywhere}.classroom-heading{display:flex;gap:20px;align-items:center;flex-wrap:wrap}.classroom-heading h3{margin:0;font-size:clamp(22px,2.4vw,32px);text-wrap:balance}.classroom-heading>.classroom-actions{margin:0 0 0 auto}.classroom-heading p{margin:0;color:var(--text-muted,#52647b)}.classroom-join{display:flex;align-items:center;gap:24px;flex-wrap:wrap;padding:20px 0;border-bottom:1px solid var(--border,#dce3ec)}.classroom-join strong{font-size:clamp(26px,3vw,40px);letter-spacing:.12em;font-variant-numeric:tabular-nums}.classroom-qr{width:120px;flex-shrink:0}.classroom-qr svg{width:100%;height:auto;display:block}.classroom-question{max-width:1100px;margin:28px auto}.classroom-question h4{font-size:clamp(21px,2.4vw,36px);line-height:1.45;text-wrap:pretty;margin:16px 0}.classroom-question img{display:block;max-width:min(320px,100%);max-height:220px;object-fit:contain;margin:20px auto}.classroom-counts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:24px 0}.classroom-counts>div{background:var(--surface,#f2f5f8);padding:20px;border-radius:10px;display:grid;gap:6px}.classroom-counts strong{font-size:32px;font-variant-numeric:tabular-nums}.classroom-answers{display:flex;gap:16px;margin:24px 0}.classroom-answers button{flex:1;font-size:20px;padding:18px}.classroom-answers [aria-pressed="true"]{outline:3px solid var(--ink,#192e45);outline-offset:3px}.classroom-correct{font-size:20px;font-weight:700}.classroom-roster{margin-top:24px;border-top:1px solid var(--border,#dce3ec);padding-top:16px}.classroom-roster ul{columns:3;padding-left:24px}.classroom-status{line-height:1.6;min-height:24px}.classroom-retry{border-left:3px solid #b96809;background:#fff8e9;padding:18px;margin:20px 0}.classroom-retry button{margin:6px 12px 0 0}.classroom-stage:fullscreen{border:0;border-radius:0;background:#fff;color:#172c43;overflow:auto;padding:36px 6vw;margin:0}.classroom-stage:fullscreen .classroom-roster{display:none}.classroom-stage:fullscreen .classroom-question h4{font-size:clamp(28px,3vw,54px)}.classroom-stage:fullscreen .classroom-qr{width:130px}.classroom-invite{margin-bottom:20px}.classroom-invite p{line-height:1.6}.classroom-form input,.classroom-form select{min-width:0;width:100%}#classroom-rooms button{text-align:left}#view-classroom .classroom-form{max-width:620px}@media(max-width:700px){.classroom-form{grid-template-columns:1fr}.classroom-heading{align-items:flex-start;gap:12px}.classroom-heading>.classroom-actions{margin-left:0;flex-basis:100%}.classroom-roster ul{columns:1}.classroom-counts>div{padding:12px}.classroom-counts strong{font-size:26px}.classroom-counts span{font-size:12px}.classroom-join{gap:14px}.classroom-stage{padding:18px}.classroom-answers{gap:12px}}
#page-classroom>.page-header,#view-classroom>.page-header{padding:0 0 24px;border-bottom:1px solid var(--line,#dce3ec);margin-bottom:24px}
#page-classroom .page-header p,#view-classroom .page-header p{max-width:68ch;line-height:1.7}
#classroom-entry{border-radius:16px;box-shadow:none;max-width:1100px;margin:0 auto}
#classroom-entry .card-body{padding:clamp(24px,3vw,36px)}
#classroom-entry h3{font-size:26px;letter-spacing:-.03em;margin:0 0 24px}
#classroom-entry .classroom-form{gap:24px}
#classroom-entry input,#classroom-entry select{min-height:48px;border-radius:8px}
#classroom-entry .classroom-form button{min-height:48px;justify-self:start;padding:12px 28px}
#classroom-entry .learning-note,#classroom-entry .card-body>p{color:var(--muted,#52647b);font-size:14px;line-height:1.75;max-width:78ch;margin-top:24px}
#classroom-rooms{border-top:1px solid var(--line,#dce3ec);padding-top:24px;margin-top:24px;gap:12px}
#classroom-rooms button{border-radius:10px;padding:14px 18px;min-height:52px}
.classroom-stage{box-shadow:none;border-color:var(--line,#dce3ec)}
.classroom-heading{padding-bottom:24px;border-bottom:1px solid var(--line,#dce3ec);gap:12px 24px}
.classroom-heading h3{flex:1 1 55%;letter-spacing:-.03em}
.classroom-heading>p{font-size:14px;background:#eef3f9;border-radius:6px;padding:8px 12px}
.classroom-heading>.classroom-actions{flex-basis:100%;margin:8px 0 0;gap:12px}
.classroom-heading .classroom-actions button{background:#fff;color:var(--ink,#172c43);border:1px solid #b8c6d5;box-shadow:none}
.classroom-join{margin-top:24px;background:#f4f7fa;border:1px solid var(--line,#dce3ec);padding:24px;border-radius:12px;gap:20px}
.classroom-join strong{letter-spacing:.08em;font-size:clamp(24px,3.2vw,40px);color:var(--brand,#2854aa);overflow-wrap:anywhere}
.classroom-join>div:not(.classroom-qr){max-width:24ch;line-height:1.65;font-size:14px;color:var(--muted,#52647b)}
.classroom-question{padding:12px 0;margin:24px auto}
.classroom-question>.learning-note{font-size:14px;font-variant-numeric:tabular-nums;color:var(--muted,#52647b)}
.classroom-question h4{font-weight:550;letter-spacing:-.02em;max-width:56ch}
.classroom-counts>div{background:#f4f7fa;border:1px solid var(--line,#dce3ec);border-radius:10px}
.classroom-counts strong{font-weight:600}
.classroom-answers button{border:1px solid #a9b9cb;border-radius:10px;min-height:64px;font-weight:650}
.classroom-answers [aria-pressed=true]{background:#e8f0ff;color:#173a76}
.classroom-correct{padding:18px 20px;background:#eef5ef;color:#215333;border:1px solid #cbded0;border-radius:10px}
.classroom-roster summary{cursor:pointer;min-height:48px;padding:12px 0;font-weight:600}
.classroom-roster li{padding:8px 0;break-inside:avoid;line-height:1.5}
.classroom-stage>.classroom-actions{padding-top:24px;border-top:1px solid var(--line,#dce3ec);gap:12px}
.classroom-actions button[data-classroom-action=end]{margin-left:auto;color:#943b31;border-color:#dfbeb9}
.classroom-status:not(:empty){max-width:1100px;margin:20px auto;font-size:14px;line-height:1.7;color:var(--muted,#52647b)}
#view-classroom #classroom-entry{max-width:680px}#view-classroom .classroom-form{grid-template-columns:minmax(0,1fr) auto}
#classroom-code{font-variant-numeric:tabular-nums;letter-spacing:.12em;text-transform:uppercase}
@media(max-width:700px){.classroom-join{padding:18px;gap:16px}.classroom-join strong{font-size:28px}.classroom-heading>p{flex-basis:100%}.classroom-heading>.classroom-actions{gap:8px}.classroom-stage>.classroom-actions button{flex:1 1 100%}.classroom-actions button[data-classroom-action=end]{margin-left:0}#view-classroom .classroom-form{grid-template-columns:minmax(0,1fr)}#classroom-entry .classroom-form button{width:100%;justify-self:stretch}.classroom-counts{gap:8px}}

/* Finale: a closed challenge, never another joinable room. */
.classroom-finale{--game-ink:#172e45;--game-blue:#2854aa;--game-gold:#f5cb65;--game-line:#dce4ee;max-width:960px;margin:28px auto 0;color:var(--game-ink);text-align:center}
.classroom-finale-hero{background:#f7f6f3;color:var(--game-ink);border:1px solid #eaeaea;border-radius:12px;padding:32px 20px 44px;animation:classroom-finale-in .32s ease-out both}
.classroom-finale-hero h4{font-size:clamp(27px,4vw,42px);letter-spacing:-.035em;line-height:1.15;text-wrap:balance;margin:12px 0}
.classroom-finale-hero p{margin:8px auto;max-width:48ch;line-height:1.6;color:#52647b}
.classroom-finale-hero .classroom-finale-label{color:#805b12;font-size:12px;font-weight:700;letter-spacing:.12em}
.classroom-trophy{display:grid;place-items:center;width:64px;height:64px;margin:0 auto 16px;border-radius:12px;background:#fbf3db;color:#805b12}
.classroom-trophy svg{width:44px;height:44px}
.classroom-podium{list-style:none;display:flex;align-items:flex-end;justify-content:center;gap:12px;padding:0 16px;margin:-20px 0 24px;position:relative;animation:classroom-finale-in .4s .08s ease-out both}
.classroom-podium-card{flex:1;min-width:0;max-width:250px;padding:22px 12px;background:#fff;border:1px solid #eaeaea;border-bottom:5px solid #9eafc3;border-radius:12px;display:grid;justify-items:center;gap:10px;overflow-wrap:anywhere}
.classroom-podium-card[data-place="1"]{order:2;min-height:205px;border-bottom-color:#d5a437}.classroom-podium-card[data-place="2"]{order:1;min-height:180px}.classroom-podium-card[data-place="3"]{order:3;min-height:160px;border-bottom-color:#bc8055}
.classroom-medal{display:grid;place-items:center;min-width:44px;height:44px;border:2px solid #d5a437;background:#fff4d6;color:#6c4b05;border-radius:50%;font-size:21px;font-weight:750;font-variant-numeric:tabular-nums}
.classroom-podium-card>strong{font-size:17px;line-height:1.35}.classroom-podium-card>span:not(.classroom-medal):not(.classroom-you){font-size:14px;color:#52647b;font-variant-numeric:tabular-nums}
.classroom-you{font-size:12px;font-weight:700;color:#234d9a;background:#edf3ff;padding:3px 10px;border-radius:20px}
.classroom-own-score{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;text-align:left;background:#edf3ff;border:1px solid #b9ccee;border-radius:12px;padding:18px 20px;margin:20px 0;font-variant-numeric:tabular-nums}
.classroom-own-score span{font-size:14px;color:#354f73}.classroom-ranking{text-align:left;margin:24px 0;border:1px solid var(--game-line);border-radius:12px;overflow:hidden}.classroom-ranking summary{cursor:pointer;padding:18px;min-height:48px;font-weight:650;background:#f5f7fb}
.classroom-ranking ol{padding:0;margin:0;list-style:none}.classroom-ranking li{display:grid;grid-template-columns:40px minmax(0,1fr) auto;gap:12px;align-items:center;padding:16px 18px;border-top:1px solid var(--game-line);font-variant-numeric:tabular-nums;overflow-wrap:anywhere}.classroom-ranking li>span:last-child{font-size:14px;color:#52647b}.classroom-ranking .classroom-ranking-self{background:#edf3ff}.classroom-rank{color:var(--game-blue);font-weight:700}
.classroom-score-note{font-size:14px;line-height:1.6;max-width:65ch;margin:24px auto;color:#52647b}.classroom-score-empty{padding:24px}.classroom-finale>button{min-height:48px;padding:12px 24px;border-radius:10px;background:var(--game-blue);color:#fff;border:1px solid var(--game-blue);font-weight:650;transition:transform .15s ease-out,background-color .15s ease-out}.classroom-finale>button:active{transform:scale(.98)}
.classroom-finale button:focus-visible,.classroom-ranking summary:focus-visible{outline:3px solid #2854aa;outline-offset:4px}
@keyframes classroom-finale-in{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:540px){.classroom-finale{margin-top:20px}.classroom-finale-hero{padding:24px 16px 36px}.classroom-podium{padding:0;gap:6px}.classroom-podium-card{padding:16px 6px;gap:8px;border-radius:12px}.classroom-podium-card>strong{font-size:14px}.classroom-podium-card>span:not(.classroom-medal):not(.classroom-you){font-size:12px}.classroom-podium-card[data-place="1"]{min-height:190px}.classroom-podium-card[data-place="2"]{min-height:175px}.classroom-podium-card[data-place="3"]{min-height:160px}.classroom-ranking li{grid-template-columns:30px minmax(0,1fr);padding:14px 12px;gap:8px}.classroom-ranking li>span:last-child{grid-column:2}.classroom-finale>button{width:100%}}
@media(prefers-reduced-motion:reduce){.classroom-finale-hero,.classroom-podium{animation:none}.classroom-finale>button{transition:none}.classroom-finale>button:active{transform:none}}

.classroom-question-figure{display:grid;justify-items:center;gap:12px;margin:24px 0;padding:20px;background:#fbfbfa;border:1px solid #eaeaea;border-radius:12px}
.classroom-question .classroom-question-figure img{max-width:100%;width:auto;max-height:320px;object-fit:contain;margin:0;outline:1px solid #0000000f;outline-offset:4px;background:#fff}
.classroom-question-figure figcaption{font-size:14px;color:#52647b;line-height:1.5;text-align:center}
.classroom-answers button[data-classroom-action="V"]{background:#edf3ec;color:#285132;border-color:#9cb9a1}
.classroom-answers button[data-classroom-action="F"]{background:#fdebec;color:#8c302f;border-color:#d7a7a5}
.classroom-answers button[aria-pressed="true"]{outline-color:#172e45;outline-offset:3px}
.classroom-stage:fullscreen .classroom-question-figure img{max-height:40vh}
@media(max-width:540px){.classroom-question-figure{padding:16px;margin:20px 0}.classroom-question .classroom-question-figure img{max-height:260px}.classroom-question h4{font-size:22px}.classroom-answers{gap:12px}}

/* Aula shares the existing outlined wordmark, type and interaction language. */
#page-classroom,#view-classroom{--aula-line:#e4e7eb;--aula-soft:#f7f6f3;--aula-muted:#52647b}
#page-classroom>.page-header,#view-classroom>.page-header{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:8px 24px;padding-bottom:24px;border-color:var(--aula-line)}
#page-classroom .classroom-brand,#view-classroom .classroom-brand{display:flex;align-items:center;gap:16px;margin:0;min-width:0;line-height:1}
.classroom-brand img{display:block;width:190px;height:auto;max-width:64%;flex-shrink:1}
.classroom-brand img.classroom-aula-logo{width:110px;max-width:30%;height:auto;border-left:1px solid #c8ced6;padding-left:16px;flex-shrink:1}
#page-classroom>.page-header>p,#view-classroom>.page-header>p{grid-column:1;margin:0;max-width:64ch;color:var(--aula-muted);font-size:15px;line-height:1.65;text-wrap:pretty}
#classroom-back{grid-column:2;grid-row:1 / span 2;align-self:center;justify-self:end;min-height:44px}
#classroom-entry{max-width:1100px;border-color:var(--aula-line);border-radius:12px;background:#fff}
#classroom-entry .card-body{padding:clamp(20px,3vw,32px)}
#classroom-entry h3{font-size:clamp(22px,2.5vw,28px);margin-bottom:24px;line-height:1.2;text-wrap:balance}
#classroom-entry .classroom-form{gap:20px 24px}
#classroom-entry label{gap:10px;color:#253a50}
#classroom-entry .form-input{background:#fbfbfa;border-color:#c7d0da;transition:border-color .15s ease-out,box-shadow .15s ease-out}
#classroom-entry .form-input:focus{background:#fff;border-color:#2854aa}
#classroom-rooms:empty{display:none}
#classroom-rooms{border-color:var(--aula-line);color:var(--aula-muted);font-size:14px;line-height:1.6}
.classroom-stage{border-radius:12px;border-color:var(--aula-line);padding:clamp(20px,3vw,32px)}
.classroom-heading{gap:12px 20px;padding-bottom:20px;border-color:var(--aula-line)}
.classroom-heading h3{font-size:clamp(22px,2.6vw,30px);line-height:1.25}
.classroom-heading>p{background:var(--aula-soft);color:#40546b;border:1px solid var(--aula-line);font-variant-numeric:tabular-nums}
.classroom-heading>.classroom-actions{flex-basis:auto;margin-left:auto;margin-top:0;gap:8px}
.classroom-join{background:var(--aula-soft);border-color:var(--aula-line);margin:24px 0;padding:20px}
.classroom-qr{background:#fff;border:1px solid var(--aula-line);border-radius:8px;padding:6px}
.classroom-question{max-width:960px;margin:24px auto;padding:0}
.classroom-question>.learning-note{margin-top:0;letter-spacing:.02em;font-size:13px}
.classroom-question h4{font-size:clamp(22px,2.6vw,34px);line-height:1.45;margin:12px 0 24px}
.classroom-counts>div{background:#fbfbfa;border-color:var(--aula-line)}
.classroom-answers button{transition:background-color .15s ease-out,border-color .15s ease-out;box-shadow:none}
.classroom-answers button:not(:disabled):hover{border-color:#52647b}
.classroom-status:empty{display:none}
.classroom-status:not(:empty){margin:16px 0;font-size:13px;max-width:78ch}
.classroom-finale{margin-top:24px}
.classroom-stage:fullscreen .classroom-heading{padding-bottom:20px}
@media(max-width:700px){.classroom-heading>.classroom-actions{flex-basis:100%;margin-left:0;margin-top:4px}.classroom-brand img{width:172px}.classroom-brand span{font-size:26px}.classroom-join{gap:16px}.classroom-question h4{font-size:22px}}
@media(max-width:540px){#page-classroom>.page-header,#view-classroom>.page-header{grid-template-columns:minmax(0,1fr);gap:12px;padding-bottom:20px}#classroom-back{grid-column:1;grid-row:auto;justify-self:start}#page-classroom>.page-header>p,#view-classroom>.page-header>p{font-size:14px}.classroom-brand img{width:158px}.classroom-brand span{font-size:25px;padding-left:12px}.classroom-brand{gap:12px}.classroom-stage{padding:18px}.classroom-join{padding:16px}.classroom-heading h3{font-size:22px}.classroom-heading>p{font-size:13px}.classroom-answers button{min-height:56px}}
.classroom-reports,.classroom-answer-report{padding:20px;margin-top:20px;min-width:0}.classroom-reports #classroom-reports-list{display:grid;gap:8px;margin-top:16px}.classroom-reports button{min-height:44px;white-space:normal;text-align:left}.classroom-answer-report details{padding:12px 0;border-bottom:1px solid var(--line,#dce3ec)}.classroom-answer-report summary{cursor:pointer;font-weight:600}.classroom-answer-report li{padding:8px 0;overflow-wrap:anywhere}.classroom-presence-notice{padding:10px;background:#fff6df;color:#684b14}.portal-segments [aria-disabled=true]{opacity:.55;cursor:not-allowed}
.classroom-question-meta{display:flex;align-items:center;justify-content:space-between;gap:12px}.classroom-question-meta p{margin:0}.classroom-question-content{min-width:0}.classroom-question-figure button{display:block;margin:8px auto;min-height:44px}
#page-classroom>.page-header,#view-classroom>.page-header{display:flex;flex-direction:column;align-items:center;gap:12px;box-sizing:border-box;width:100%;max-width:1100px;margin:0 auto 24px;padding:32px 24px;background:var(--aula-soft,#f0f4fa);border:1px solid var(--aula-line,#dce3ec);border-radius:12px;text-align:center}
#page-classroom>.page-header .classroom-brand,#view-classroom>.page-header .classroom-brand{justify-content:center;width:100%}
#page-classroom>.page-header>p,#view-classroom>.page-header>p{margin:0 auto;max-width:64ch;text-align:center}
#page-classroom>.page-header>.category-support-note,#view-classroom>.page-header>.category-support-note{font-size:13px}
#classroom-back{align-self:center;justify-self:center}
#classroom-entry>.classroom-reports{margin:0;padding:clamp(20px,3vw,32px);border-top:1px solid var(--aula-line,#dce3ec)}
#classroom-entry>.classroom-reports h3{font-size:20px;margin:0 0 8px}
#classroom-entry>.classroom-reports>p{margin:0 0 16px;color:var(--aula-muted,#52647b);font-size:14px;line-height:1.6}
#classroom-entry>.classroom-reports #classroom-reports-list{padding-top:16px;border-top:1px solid var(--aula-line,#dce3ec);color:var(--aula-muted,#52647b);font-size:14px;line-height:1.6}
@media(max-width:540px){#page-classroom>.page-header,#view-classroom>.page-header{padding:24px 16px;gap:12px}}
@media(max-width:820px){
 body.student-classroom-question{padding:0!important}body.student-classroom-question .release-footer,body.student-classroom-question #new-exam-popup{display:none!important}
 body.student-classroom-question #view-classroom.active{display:flex!important;flex:none;flex-direction:column;align-items:stretch;gap:6px;box-sizing:border-box;width:100%;max-width:none;height:calc(100dvh - var(--student-header-height,56px));max-height:calc(100dvh - var(--student-header-height,56px));min-height:0;margin:0;padding:8px;overflow:hidden}
 body.student-classroom-question #view-classroom>.page-header{display:none}
 body.student-classroom-question #classroom-status{flex:none;max-height:3.4em;overflow:auto;margin:0;padding:2px 4px;font-size:12px;line-height:1.5;min-height:0}
 body.student-classroom-question #classroom-stage{display:flex;flex-direction:column;flex:1;min-height:0;gap:8px;margin:0;padding:10px;border-radius:8px;overflow:hidden}
 body.student-classroom-question .classroom-heading{flex:none;gap:6px 12px;padding:0 0 8px}
 body.student-classroom-question .classroom-heading h3{font-size:15px;line-height:1.3}
 body.student-classroom-question .classroom-heading>p{font-size:12px;padding:4px 8px;margin:0}
 body.student-classroom-question .classroom-heading>.classroom-actions{flex-basis:auto;gap:8px;margin:0 0 0 auto}
 body.student-classroom-question .classroom-heading button{min-height:44px;padding:6px 10px;font-size:12px}
 body.student-classroom-question .classroom-question{display:flex;flex-direction:column;flex:1;min-height:0;width:100%;gap:8px;margin:0}
 body.student-classroom-question .classroom-question-meta{flex:none;font-size:12px}
 body.student-classroom-question .classroom-question-content{flex:1;min-height:0;overflow:auto;overscroll-behavior:contain;scroll-padding:8px}
 body.student-classroom-question .classroom-question h4{font-size:clamp(16px,4.4vw,20px);line-height:1.45;margin:4px 0 12px;overflow-wrap:anywhere}
 body.student-classroom-question .classroom-question figure{margin:4px 0}body.student-classroom-question .classroom-question img{max-height:clamp(80px,22dvh,180px);max-width:100%;height:auto;width:auto;margin:4px auto;object-fit:contain}
 body.student-classroom-question .classroom-question figcaption{font-size:12px;text-align:center}
 body.student-classroom-question .classroom-answers{flex:none;display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:0;padding:4px 4px 0}
 body.student-classroom-question .classroom-answers button{min-height:48px;padding:10px;font-size:18px;border:1px solid var(--line,#dce3ec);border-radius:6px}
 body.student-classroom-question .classroom-answers button:first-child{color:#17713b}body.student-classroom-question .classroom-answers button:last-child{color:#b52c2c}
 body.student-classroom-question .classroom-question>.classroom-answers+p{flex:none;margin:0;padding:0 4px env(safe-area-inset-bottom);font-size:12px;line-height:1.4}
 body.student-classroom-question .classroom-retry{flex:none;max-height:30dvh;overflow:auto;padding:8px;margin:0;font-size:12px}
}
/* The join code is the focus of the lobby; teaching controls stay outside it. */
.classroom-stage[data-state=lobby]>.classroom-join{display:flex;flex-direction:column;align-items:center;justify-content:center;width:min(100%,560px);box-sizing:border-box;margin:32px auto;padding:32px 24px;gap:16px;text-align:center;background:var(--surface);border:1px solid var(--line)}
.classroom-join .classroom-code-label{font-size:14px;font-weight:600;color:var(--muted);letter-spacing:0}
.classroom-stage .classroom-join strong{font-size:clamp(28px,7vw,48px);letter-spacing:.12em;font-variant-numeric:tabular-nums;max-width:100%}
.classroom-join>p{margin:0;color:var(--muted);font-size:14px;line-height:1.6}
.classroom-join .classroom-qr{width:120px;max-width:100%;flex:none}
.classroom-join .classroom-qr svg{display:block;width:100%;height:auto}
.classroom-access{margin:16px 0}
.classroom-access>summary{min-height:44px;padding:10px 0;box-sizing:border-box;cursor:pointer;color:var(--muted);font-size:14px}
.classroom-access .classroom-join{display:flex;flex-direction:column;align-items:center;text-align:center;gap:16px;margin:12px auto;max-width:560px;box-sizing:border-box}
@media(max-width:480px){.classroom-stage[data-state=lobby]>.classroom-join{padding:24px 16px;margin:24px auto}.classroom-stage .classroom-join strong{font-size:30px;letter-spacing:.08em}}