.robot-classroom{--robot-accent:#245ccd;--robot-soft:#eaf0f8;--robot-good:#078b72;max-width:1360px;margin:0 auto;padding:28px 0 60px;color:var(--st-ink,#1e304d)}
.robot-classroom *{box-sizing:border-box}.robot-classroom h1{font-size:clamp(25px,3vw,38px);letter-spacing:-1.4px;margin:8px 0 12px}.robot-classroom h2{font-size:21px;margin:6px 0 14px;line-height:1.5}.robot-classroom h3{margin:10px 0;font-size:18px}.robot-classroom p{line-height:1.7;color:var(--st-muted,#61728b);margin:8px 0 18px}.robot-classroom small{font-size:12px;line-height:1.6;color:var(--st-muted,#61728b)}
.robot-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:20px}.robot-eyebrow{font-size:11px;font-weight:800;letter-spacing:1.5px;color:var(--st-accent-ink,#245ccd)}
.robot-card{border:1px solid var(--st-border,#dce5f1);background:var(--st-surface,#fff);border-radius:22px;padding:26px;min-width:0;box-shadow:0 4px 18px #142e5505}.robot-classroom .btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;white-space:normal;line-height:1.4;font-size:14px;min-height:40px;border-radius:10px}.robot-classroom .btn:disabled{opacity:.5;cursor:not-allowed}.robot-classroom .btn.primary{background:var(--st-accent,#245ccd);border-color:var(--st-accent,#245ccd);color:var(--st-on-accent,#fff)}.robot-classroom .btn svg{width:18px;height:18px;flex:none}.robot-classroom .btn.small{padding:6px 10px;min-height:34px;font-size:12px}
.robot-classroom label{display:grid;gap:9px;font-weight:600;font-size:14px}.robot-classroom input,.robot-classroom select,.robot-classroom textarea{width:100%;min-width:0;box-sizing:border-box;border:1px solid var(--st-border,#dce5f1);border-radius:10px;background:var(--st-raised,#f8fafc);color:var(--st-ink,#1e304d);padding:12px 14px;font:inherit;line-height:1.6}.robot-classroom input:focus,.robot-classroom textarea:focus,.robot-classroom select:focus{outline:2px solid var(--st-accent-ink,#245ccd);outline-offset:2px}.robot-classroom a:focus-visible,.robot-classroom button:focus-visible{outline:3px solid var(--st-accent-ink,#245ccd);outline-offset:3px}
.robot-home-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:22px}.robot-create{background:linear-gradient(125deg,var(--st-surface,#fff),var(--st-accent-soft,#edf4ff))}.robot-create h2{font-size:30px;letter-spacing:-1px;margin-top:20px}.robot-create form{display:grid;grid-template-columns:1fr 120px;gap:16px;margin:26px 0 14px}.robot-create form button{grid-column:1/-1;justify-self:start}.robot-join{display:grid;align-content:start;gap:15px;max-width:650px}.robot-join h2,.robot-join p{margin:0}.robot-steps{display:flex;justify-content:space-between;gap:16px;padding:26px 12px;color:var(--st-muted,#61728b)}.robot-steps b{color:var(--st-accent-ink,#245ccd);margin-right:8px}.robot-room-list{margin-top:20px}.robot-room-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.robot-room-card{text-decoration:none;color:inherit;display:grid;gap:12px;transition:transform .15s,border-color .15s}.robot-room-card:hover{transform:translateY(-2px);border-color:var(--st-accent-ink,#245ccd)}.robot-room-card b:last-child{color:var(--st-accent-ink,#245ccd);font-size:13px}
.robot-statusbar{display:flex;align-items:center;flex-wrap:wrap;gap:15px;font-size:13px;margin:0 0 22px}.robot-statusbar a{margin-left:auto}.robot-phase{display:inline-flex;align-items:center;justify-content:center;width:max-content;padding:6px 10px;border-radius:7px;font-size:12px;font-weight:700;background:var(--st-accent-soft,#e8efff);color:var(--st-accent-ink,#245ccd)}#robot-connection{font-size:12px;color:var(--st-muted,#61728b)}#robot-connection[data-state=live]{color:var(--st-success,#078b72)}#robot-connection[data-state=error]{color:var(--st-danger,#c34646)}.robot-error{border:1px solid #ec8992;background:var(--st-danger-bg,#fff0f2);color:var(--st-danger,#a52f44)!important;padding:14px 18px;border-radius:12px}.robot-error[hidden]{display:none}
.robot-invite{display:flex;align-items:center;gap:28px;border-top:3px solid var(--st-accent,#245ccd)}.robot-invite small{display:block}.robot-code{display:block;font-size:clamp(28px,3.4vw,44px);letter-spacing:5px;line-height:1.5;color:var(--st-accent-ink,#245ccd);font-variant-numeric:tabular-nums}.robot-invite-link{flex:1;display:flex;align-items:end;gap:12px;min-width:0}.robot-invite-link label{flex:1;min-width:0}.robot-invite-link input{font-size:12px}.robot-invite-link .btn{flex:none}.robot-teacher-actions{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin:20px 0}.robot-teacher-actions>span{font-size:12px;color:var(--st-muted,#61728b);margin-left:6px}.robot-metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-bottom:20px}.robot-metrics .robot-card{padding:18px 22px}.robot-metrics strong{display:block;font-size:32px;margin-top:4px;font-variant-numeric:tabular-nums}.robot-metrics strong small{font-size:17px;font-weight:400}
.robot-section-heading{display:flex;justify-content:space-between;align-items:start;gap:20px}.robot-section-heading p{font-size:12px;margin-bottom:18px}.robot-section-heading>.btn{flex:none}.robot-table-wrap{overflow:auto}.robot-roster{border-collapse:collapse;width:100%;font-size:13px;min-width:680px}.robot-roster th{font-weight:600;color:var(--st-muted,#61728b);background:var(--st-raised,#f5f7fb);text-align:left;padding:12px}.robot-roster td{padding:16px 12px;border-bottom:1px solid var(--st-border,#eaf0f8);vertical-align:middle}.robot-roster small{display:block;font-size:11px}.robot-roster .robot-presence{margin-top:4px}.robot-roster .online,.robot-success{color:var(--st-success,#078b72)}.robot-rank{font-size:18px;color:var(--st-accent-ink,#245ccd)}.robot-progress{display:flex;gap:5px}.robot-progress i{font-size:11px;font-weight:600;line-height:25px;display:grid;place-items:center;width:25px;height:25px;border-radius:7px;background:var(--st-raised,#eaf0f8);color:var(--st-muted,#61728b);font-style:normal}.robot-progress i.done{background:#0b8d73;color:white}.robot-empty{text-align:center;padding:40px!important;color:var(--st-muted,#61728b)}.robot-mission-overview{margin-top:30px}.robot-mission-overview .robot-board{max-width:290px;margin:18px auto}.robot-mission-overview p{font-size:13px}
.robot-play-layout{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(320px,1fr);gap:22px;align-items:start}.robot-student-banner{padding:14px 20px;margin-bottom:22px;border-radius:12px;background:var(--st-accent-soft,#edf3ff);color:var(--st-accent-ink,#245ccd);font-size:14px}.robot-student-banner[data-phase=running]{border-left:4px solid #0b8d73}.robot-stage h2{margin-bottom:0}.robot-stage .robot-section-heading>strong{font-size:18px;color:var(--st-accent-ink,#245ccd);white-space:nowrap}.robot-stage>p{font-size:14px;min-height:48px;margin-top:12px}.robot-board{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));aspect-ratio:1;gap:5px;background:var(--st-raised,#eaf0f8);border:1px solid var(--st-border,#dce5f1);padding:9px;border-radius:17px;max-width:480px;margin:auto}.robot-cell{position:relative;background:var(--st-surface,#fff);border-radius:8px;display:grid;place-items:center;aspect-ratio:1}.robot-cell>small{position:absolute;font-size:9px;left:5px;bottom:1px;opacity:.45}.robot-cell.wall{background:repeating-linear-gradient(45deg,#455672,#455672 6px,#3c4b65 6px,#3c4b65 12px);box-shadow:inset 0 0 0 1px #192a45}.robot-cell.wall small{color:#fff}.robot-cell.goal{box-shadow:inset 0 0 0 2px #39b291;background:#e0f7ee}.robot-flag{color:#078b72;font-size:clamp(20px,3vw,36px)}.robot-star{color:#edac15;font-size:clamp(22px,3vw,38px);filter:drop-shadow(0 2px 1px #7d540330)}.robot-bot{position:absolute;inset:15%;background:linear-gradient(135deg,#77e7e7,#397dc5);box-shadow:0 3px 6px #142e552b,inset 0 0 0 2px #c3f7fa;color:#123759;display:grid;place-items:center;border-radius:32%;font-size:clamp(18px,2.8vw,32px);line-height:1;transform:rotate(var(--direction));transition:transform .15s;z-index:1}.robot-board-legend{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;font-size:11px;color:var(--st-muted,#61728b);margin:16px 0}.robot-result{min-height:48px;padding:12px 0;color:var(--st-ink,#1e304d);font-size:14px;font-weight:600}.robot-result[data-success=true]{color:var(--st-success,#078b72)}.robot-program>p{font-size:13px}.robot-command-palette{display:grid;grid-template-columns:1fr 1fr;gap:9px}.robot-command-palette .btn{font-size:13px;justify-content:start;padding:11px 12px}.robot-command-palette span{font-size:24px;font-weight:500;width:26px;line-height:1;color:var(--st-accent-ink,#245ccd)}.robot-queue-heading{display:flex;align-items:center;justify-content:space-between;margin:20px 0 10px}.robot-queue-heading>b{font-size:12px;color:var(--st-muted,#61728b)}.robot-command-list{list-style:none;margin:0 0 20px;padding:0;max-height:310px;min-height:120px;overflow:auto;border:1px dashed var(--st-border,#dce5f1);border-radius:12px;background:var(--st-raised,#f6f8fb)}.robot-command-list li{display:flex;align-items:center;gap:8px;padding:9px 12px;border-bottom:1px solid var(--st-border,#eaf0f8)}.robot-command-list b{flex:1;font-size:13px}.robot-command-order{font-size:11px;color:var(--st-muted,#61728b);width:18px;text-align:center}.robot-command-list button{border:1px solid var(--st-border,#dce5f1);border-radius:6px;background:var(--st-surface,#fff);color:var(--st-ink,#1e304d);width:30px;height:30px;cursor:pointer}.robot-command-list button:disabled{opacity:.3;cursor:default}.robot-command-list .robot-queue-empty{display:grid;place-items:center;height:118px;font-size:13px;color:var(--st-muted,#61728b);border:0;padding:20px;text-align:center}.robot-program label{font-size:13px}.robot-execute{width:100%;margin:16px 0 12px}.robot-program>small{display:block}.robot-student-ranking{margin-top:22px}.robot-rank-row{display:grid;grid-template-columns:45px 1fr 100px 90px;align-items:center;gap:12px;padding:12px 14px;border-bottom:1px solid var(--st-border,#eaf0f8);font-size:13px}.robot-rank-row.me{background:var(--st-accent-soft,#eaf0f8);border-radius:10px}.robot-rank-row b{color:var(--st-accent-ink,#245ccd)}#robot-my-rank{color:var(--st-accent-ink,#245ccd);white-space:nowrap}
.robot-dialog{width:min(640px,calc(100vw - 28px));max-height:85vh;overflow:auto;border:1px solid var(--st-border,#dce5f1);border-radius:18px;padding:26px;background:var(--st-surface,#fff);color:var(--st-ink,#1e304d)}.robot-dialog::backdrop{background:#11182788}.robot-dialog .actions{justify-content:end;margin-top:25px}.robot-history-item{border-bottom:1px solid var(--st-border,#dce5f1);padding:20px 0}.robot-history-item small{display:block}.robot-history-item p{font-size:13px}.robot-history-item blockquote{font-size:13px;margin:10px 0;padding:12px;background:var(--st-raised,#eaf0f8);border-radius:8px}.studio-live-classroom{display:flex;align-items:center;gap:16px;padding:20px 24px;margin:20px 0;border-radius:14px;border:1px solid var(--st-accent-border,#c9d9f2);background:var(--st-accent-soft,#eaf0f8);color:var(--st-ink,#1e304d);text-decoration:none}.studio-live-classroom>span:first-child{display:grid;place-items:center;width:44px;height:44px;font-size:25px;background:var(--st-surface,#fff);border-radius:12px;flex:none}.studio-live-classroom b,.studio-live-classroom small{display:block}.studio-live-classroom small{color:var(--st-muted,#61728b);margin-top:5px;font-size:12px}
@media(max-width:1000px){.robot-invite{flex-wrap:wrap;gap:18px}.robot-invite>small{width:100%}.robot-play-layout{grid-template-columns:1fr 1fr;gap:16px}.robot-card{padding:20px}.robot-roster{min-width:640px}}
@media(max-width:700px){.robot-classroom{padding-top:20px}.robot-heading{align-items:start;gap:10px}.robot-heading>.btn{padding:8px;min-height:34px;font-size:11px;flex:none}.robot-heading p{font-size:13px}.robot-home-grid,.robot-play-layout{grid-template-columns:1fr}.robot-room-grid{grid-template-columns:1fr}.robot-create h2{font-size:26px}.robot-steps{gap:10px;padding:22px 4px;font-size:12px}.robot-steps b{display:block;margin-bottom:5px}.robot-invite{display:grid}.robot-invite-link{display:grid}.robot-invite-link label{width:100%}.robot-metrics{grid-template-columns:1fr 1fr;gap:10px}.robot-metrics .robot-card{padding:14px 18px}.robot-metrics strong{font-size:27px}.robot-section-heading{flex-wrap:wrap;gap:10px}.robot-card{border-radius:16px;padding:18px}.robot-statusbar{gap:10px;font-size:12px}.robot-statusbar a{margin-left:0}.robot-stage>p{min-height:0}.robot-bot{font-size:30px}.robot-queue-empty{min-height:90px}.robot-command-list{max-height:260px}.robot-rank-row{grid-template-columns:26px 1fr 80px;gap:7px;padding:12px 6px}.robot-rank-row>small{display:none}.robot-teacher-actions>span{width:100%;margin:5px 0}.robot-dialog{padding:20px}.robot-mission-overview .robot-room-grid{grid-template-columns:1fr}.studio-live-classroom{padding:17px;gap:12px}}
@media(prefers-reduced-motion:reduce){.robot-bot,.robot-room-card{transition:none}}

/* Keep the student game clear of the site assistant overlay. */
body:has(.robot-play-layout) :is(.gai-launcher,.gai-panel){display:none!important}