.app-classroom{--room-accent:var(--st-accent,#6552bf);color:var(--st-ink,#1e304d);max-width:1500px;margin:auto;padding:20px 0 60px}.room-heading,.room-section-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin:10px 0 26px}.room-heading h1{font-size:clamp(25px,3vw,36px);line-height:1.35;letter-spacing:-.04em;margin:12px 0}.room-heading p,.room-card p,.room-help{color:var(--st-muted,#6b7890);line-height:1.7}.room-eyebrow{font-size:10px;font-weight:800;letter-spacing:.15em;color:var(--st-accent,#6552bf)}.room-card,.classroom-setup{border:1px solid var(--st-border,#dfe5ef);border-radius:18px;background:var(--st-surface,#fff);padding:24px}.room-card h2,.classroom-setup h2{font-size:20px;margin:0 0 16px;line-height:1.45}.room-card h3{font-size:18px;line-height:1.5}.room-home{display:grid;grid-template-columns:1.4fr 1fr;gap:20px;margin:28px 0 42px}.room-launch{background:linear-gradient(140deg,var(--st-surface,#fff),var(--st-accent-soft,#f1effb));padding:36px}.room-launch h2{font-size:32px;margin-top:24px}.room-robot-link{display:block;margin-top:25px}.room-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.room-list-item{color:inherit;text-decoration:none;display:grid;gap:8px}.room-list-item:hover{border-color:var(--room-accent)}.room-card label,.classroom-setup label{display:grid;gap:8px;margin-bottom:16px;font-size:13px;font-weight:600}.app-classroom input,.app-classroom select,.app-classroom textarea,.classroom-setup input,.classroom-setup select{box-sizing:border-box;max-width:100%;min-width:0;border:1px solid var(--st-border,#dfe5ef);border-radius:9px;background:var(--st-raised,#f8fafc);color:inherit;padding:11px 12px;font:inherit}.app-classroom textarea{width:100%;resize:vertical}.room-join{display:grid;gap:10px}.room-join small,.room-card>small{font-size:12px;line-height:1.6;color:var(--st-muted,#6b7890)}.room-statusbar,.room-controls{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-bottom:20px;font-size:12px}.room-statusbar a{margin-left:auto}.room-statusbar b,.room-pill{color:var(--room-accent);background:var(--st-accent-soft,#f1effb);padding:8px 12px;border-radius:8px;width:fit-content}.room-invite{display:grid;grid-template-columns:240px 1fr auto;gap:30px;align-items:center;margin-bottom:20px}.room-invite strong{display:block;letter-spacing:.14em;font:800 32px/1.8 ui-monospace,monospace}.room-invite label{margin-bottom:8px}.room-invite small{color:var(--st-muted,#6b7890);line-height:1.6;font-size:12px}.room-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:24px 0}.room-metrics .room-card{display:flex;align-items:center;gap:18px}.room-metrics strong{font-size:32px;color:var(--room-accent)}.room-metrics span{font-size:13px}.room-teacher-grid{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:20px;align-items:start}.room-section-heading h2{margin:0}.room-section-heading p{font-size:12px;max-width:500px}.room-table-scroll{overflow:auto}.app-classroom table{width:100%;border-collapse:collapse;min-width:590px;font-size:13px}.app-classroom th{text-align:left;font-size:11px;color:var(--st-muted,#6b7890);padding:10px}.app-classroom td{padding:14px 10px;border-top:1px solid var(--st-border,#dfe5ef);vertical-align:middle}.app-classroom td small{display:block;font-size:11px;color:var(--st-muted,#6b7890);margin-top:6px}.app-classroom progress{width:100%;max-width:140px;height:6px;display:block;margin-top:7px;accent-color:var(--room-accent)}.room-empty{text-align:center;padding:60px!important;color:var(--st-muted,#6b7890)}.app-classroom details{margin-top:22px}.app-classroom summary{cursor:pointer;font-size:13px;font-weight:700}.room-app-preview iframe{display:block;width:100%;height:650px;border:1px solid var(--st-border,#dfe5ef);background:#fff;border-radius:10px;margin-top:15px}.room-student-grid{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:18px}.room-stage{position:relative;min-height:680px;border:1px solid var(--st-border,#dfe5ef);border-radius:16px;overflow:hidden;background:white}.room-stage iframe{display:block;width:100%;height:78vh;min-height:680px;border:0}.room-gate{position:absolute;inset:0;z-index:2;background:var(--st-surface,#f9fafc);display:flex;flex-direction:column;justify-content:center;align-items:center;gap:15px;text-align:center;padding:30px;color:var(--st-ink,#1e304d)}.room-gate[hidden]{display:none}.room-gate span{font-size:24px;font-weight:700}.room-gate small{color:var(--st-muted,#6b7890)}.room-student-side{display:grid;gap:16px;align-content:start}.room-student-side .room-card{padding:20px}.room-student-side h2{font-size:16px}.room-student-side button{width:100%;margin:5px 0}.room-student-side label{font-size:12px;margin:18px 0 8px}.room-student-side small{font-size:11px}.room-peer{display:flex;justify-content:space-between;gap:12px;font-size:12px;padding:10px 0;border-bottom:1px solid var(--st-border,#dfe5ef)}.room-peer span{overflow-wrap:anywhere}.room-peer b{white-space:nowrap}.room-announcement{padding:16px 20px;background:var(--st-accent-soft,#f1effb);border-left:3px solid var(--room-accent);border-radius:9px;font-size:14px;white-space:pre-wrap}.room-error{padding:14px;background:var(--st-danger-bg,#fff0f0);color:var(--st-danger,#b33743);border:1px solid currentColor;border-radius:9px}.classroom-setup{width:min(520px,calc(100vw - 40px));color:var(--st-ink,#1e304d)}.classroom-setup::backdrop{background:#111a3299}.classroom-setup p{font-size:14px;line-height:1.7;white-space:pre-wrap}.classroom-setup pre{overflow:auto;max-height:300px}.classroom-setup .room-checkbox{display:flex;align-items:center}.room-help{font-size:12px!important}.classroom-setup [data-error]{color:var(--st-danger,#b33743)}#room-my-status{display:flex;justify-content:space-between;flex-wrap:wrap;font-size:13px}#room-my-status progress{max-width:none}#room-save-state{font-size:12px}body:has(.room-student-grid) .gai-launcher,body:has(.room-student-grid) .gai-panel{display:none!important}
@media(max-width:1100px){.room-invite{grid-template-columns:200px 1fr}.room-invite>small{grid-column:1/-1}.room-teacher-grid{grid-template-columns:1fr}.room-metrics .room-card{padding:16px;gap:10px}.room-student-grid{grid-template-columns:minmax(0,1fr) 250px}.room-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:700px){.app-classroom{padding-top:8px}.room-heading{align-items:flex-start}.room-heading>.btn{font-size:11px}.room-home,.room-invite,.room-student-grid,.room-grid{grid-template-columns:1fr}.room-card{padding:20px}.room-launch h2{font-size:28px}.room-metrics{grid-template-columns:repeat(2,1fr);gap:10px}.room-metrics strong{font-size:26px}.room-stage,.room-stage iframe{min-height:560px}.room-stage iframe{height:76vh}.room-section-heading{align-items:flex-start;flex-wrap:wrap}.room-student-side{grid-template-columns:1fr}.room-controls .btn{font-size:12px}.room-invite{gap:16px}.room-heading h1{font-size:24px}.room-heading p{font-size:12px}.room-statusbar{gap:10px}.room-gate span{font-size:20px}}

.app-classroom .btn,.classroom-setup .btn{display:inline-flex;justify-content:center;align-items:center;gap:7px;white-space:normal;line-height:1.5;min-height:38px;font-size:13px}.app-classroom .btn svg,.classroom-setup .btn svg{width:17px;height:17px;flex:none}.app-classroom .btn.primary,.classroom-setup .btn.primary{background:var(--st-accent,#6552bf);color:var(--st-on-accent,#fff);border-color:var(--st-accent,#6552bf)}.app-classroom .btn:disabled,.classroom-setup .btn:disabled{opacity:.5;cursor:not-allowed}.app-classroom *{box-sizing:border-box}.room-card{min-width:0}.room-invite input{width:100%}