:root{color-scheme:light;--bg: #f4efe4;--stage: #ece5d6;--surface: #fffefa;--surface-2: #f7f3ea;--text: #172033;--muted: #5b6672;--faint: #8c97a1;--accent: #126c63;--accent-ink: #ffffff;--accent-soft: #e8f6f3;--accent-soft-ink: #064a43;--eyebrow: #7c5b27;--gold: #c98a16;--gold-soft: #fbf0d6;--coral: #e2452a;--coral-soft: #fdece7;--brand-wordmark: #d9482c;--border: #d9d0bf;--border-2: #c8d1d9;--line: #e7dfd0;--correct-bg: #def7ec;--correct-border: #84e1bc;--correct-ink: #03543f;--support-bg: #eaf2fb;--support-border: #b6d3f2;--support-ink: #1c4e80;--shadow: 0 18px 40px -22px rgb(23 32 51 / 45%);--radius: 16px;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;touch-action:manipulation}:root[data-theme=dark]{color-scheme:dark;--bg: #0b0f14;--stage: #11161d;--surface: #1d242c;--surface-2: #161c23;--text: #edf3f1;--muted: #a9b6bf;--faint: #7f8c95;--accent: #28b09f;--accent-ink: #061110;--accent-soft: #123d39;--accent-soft-ink: #defaf5;--eyebrow: #d9b878;--gold: #e7b54e;--gold-soft: #2c2412;--coral: #fb7a5a;--coral-soft: #3a1e16;--brand-wordmark: #e8917b;--border: #394653;--border-2: #394653;--line: #28323c;--correct-bg: #123d39;--correct-border: #28b09f;--correct-ink: #c7f7ee;--support-bg: #15263a;--support-border: #2c4a6e;--support-ink: #bcd8f6;--shadow: 0 18px 40px -20px rgb(0 0 0 / 70%)}*{box-sizing:border-box}body{margin:0;min-width:320px;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}button,input,textarea{font:inherit;color:inherit}.studentShell{min-height:100dvh;display:flex;flex-direction:column;gap:16px;padding:18px 16px calc(18px + env(safe-area-inset-bottom));max-width:620px;margin:0 auto;width:100%}.appbar{display:flex;align-items:center;justify-content:space-between;gap:12px;position:relative;padding-bottom:12px}.appbar:after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--coral),var(--gold) 55%,transparent);opacity:.55}.brand{font-weight:900;font-size:1.1rem;letter-spacing:-.01em;color:var(--brand-wordmark)}.brand .dot{color:var(--accent)}.appbarEnd{display:flex;align-items:center;gap:10px}.leaveClass{display:inline-flex;align-items:center;gap:5px;min-height:36px;padding:0 11px;border:1px solid var(--border);border-radius:999px;background:var(--surface);color:var(--muted);font:inherit;font-size:.78rem;font-weight:700;cursor:pointer}.leaveClass:hover{color:var(--text);border-color:var(--accent)}.leaveClass:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.appbar .phase{font-size:.7rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em;color:var(--eyebrow);border:1px solid var(--border);border-radius:999px;padding:4px 11px}.themeToggle{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;padding:0;cursor:pointer;color:var(--muted);background:var(--surface-2);border:1px solid var(--border);border-radius:999px;transition:color .15s ease,border-color .15s ease}.themeToggle:hover{color:var(--text);border-color:var(--accent)}.themeToggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}h1{font-size:1.35rem;margin:0;letter-spacing:-.01em}h2{font-size:1.1rem;margin:0 0 6px}label{display:flex;flex-direction:column;gap:6px;font-weight:700;font-size:.84rem;color:var(--muted)}input[type=text],input[type=number],input:not([type]),textarea{background:var(--surface-2);border:1px solid var(--border-2);border-radius:12px;padding:12px 14px;font-size:1rem;color:var(--text);width:100%}input:focus-visible,textarea:focus-visible,button:focus-visible{outline:3px solid var(--accent-soft);outline-offset:1px;border-color:var(--accent)}textarea{resize:vertical;min-height:92px}button{cursor:pointer;border-radius:12px;border:1px solid var(--border-2);background:var(--surface);font-weight:700;padding:12px 16px;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:transform .06s ease,background .15s ease,border-color .15s ease}button:active{transform:translateY(1px)}button:disabled{opacity:.5;cursor:not-allowed}button.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);width:100%;padding:14px 16px;font-size:1.02rem}.lobby{display:flex;flex-direction:column;gap:14px}.lobby .hello{text-align:center;padding:8px 0 2px}.lobby .hello p{color:var(--muted);margin:6px 0 0}.actionChip{align-self:flex-start;display:inline-flex;align-items:center;gap:6px;padding:7px 10px;border-radius:999px;font-size:.78rem;font-weight:800;color:var(--eyebrow);background:var(--gold-soft);border:1px solid var(--gold)}.studentEnrollment{display:grid;gap:10px;padding:13px;background:var(--surface-2);border:1px solid var(--line);border-radius:13px}.studentEnrollmentHeading{display:flex;align-items:center;justify-content:space-between;gap:10px}.studentEnrollmentHeading h2,.studentEnrollmentHeading p{margin:0}.compactSecondary{width:auto;padding:7px 10px;font-size:.78rem;background:var(--surface);color:var(--muted)}.compactSecondary.reject{color:var(--coral)}.studentEnrollmentError,.studentEnrollmentNotice{margin:0;padding:9px 11px;border-radius:10px;font-size:.84rem;line-height:1.4}.studentEnrollmentError{color:var(--coral);background:var(--coral-soft)}.studentEnrollmentNotice{color:var(--accent-soft-ink);background:var(--accent-soft)}.studentEnrollmentRequests,.studentBatchList{display:grid;gap:8px;margin:0;padding:0;list-style:none}.studentEnrollmentRequests li,.studentBatchList li{display:grid;gap:7px;padding:11px;background:var(--surface);border:1px solid var(--line);border-radius:11px}.studentEnrollmentRequests li>div:first-child{display:grid;gap:2px}.studentEnrollmentRequests span,.studentEnrollmentRequests small,.studentBatchList span,.studentBatchList p{color:var(--muted);font-size:.78rem}.studentBatchList p{margin:0;line-height:1.4}.studentEnrollmentActions{display:flex;flex-wrap:wrap;gap:7px}.studentEnrollmentActions .primary{width:auto}.studentEnrollmentMethod{border:1px solid var(--line);border-radius:11px;background:var(--surface)}.studentEnrollmentMethod summary{display:flex;align-items:center;gap:8px;padding:11px;font-weight:800;cursor:pointer}.studentEnrollmentMethod summary .batchCount{margin-left:auto}.studentEnrollmentMethod form{display:grid;gap:9px;padding:0 11px 11px}.studentEnrollmentMethod form small{color:var(--muted);font-size:.75rem;line-height:1.4}.studentEnrollmentMethod textarea{min-height:76px;font-size:.8rem;overflow-wrap:anywhere}.studentEnrollmentMethod>.emptySchedule,.studentEnrollmentMethod>.studentBatchList{margin:0 11px 11px}.nextClass{display:flex;flex-direction:column;gap:8px;padding:6px 2px}.nextClass p{color:var(--muted);margin:0}.nextClass time{color:var(--muted);font-size:.88rem}.sessionEyebrow{color:var(--eyebrow)!important;font-size:.7rem;font-weight:900;letter-spacing:.09em;text-transform:uppercase}.countdown{align-self:flex-start;padding:8px 11px;border-radius:10px;color:var(--accent-soft-ink);background:var(--accent-soft)}.sessionUnavailable{color:var(--coral);font-weight:700}.lobbyDivider{height:1px;background:var(--line);margin:2px 0}.scheduledClasses{display:flex;flex-direction:column;gap:10px;margin-top:4px}.scheduledClassesHeading{display:flex;align-items:center;gap:8px;color:var(--eyebrow)}.scheduledClassesHeading h2{margin:0}.scheduledClassList{list-style:none;display:flex;flex-direction:column;gap:10px;margin:0;padding:0}.scheduledClass{display:grid;gap:8px;padding:13px;background:var(--surface-2);border:1px solid var(--line);border-radius:13px}.scheduledClass>div{display:grid;gap:3px}.scheduledClass small,.scheduledClass time,.scheduledClass p,.emptySchedule{color:var(--muted);font-size:.84rem}.scheduledClass p,.emptySchedule{margin:0}.sessionStatus{width:fit-content;color:var(--faint);font-size:.65rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase}.sessionStatus.live{color:var(--accent)}.sessionStatus.cancelled{color:var(--coral)}button.primary.compact{width:auto;justify-self:start;padding:9px 14px;font-size:.88rem}.confirmName{display:flex;flex-direction:column;gap:4px;background:var(--accent-soft);color:var(--accent-soft-ink);border:1px solid var(--correct-border);border-radius:12px;padding:14px}.confirmName span{font-weight:800;font-size:1.05rem}.confirmName small{color:inherit;opacity:.85}.history{margin-top:4px}.history h2{font-size:.72rem;text-transform:uppercase;letter-spacing:.09em;color:var(--faint)}.historyList{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}.historyItem{display:flex;align-items:center;justify-content:space-between;gap:10px;width:100%;text-align:left;cursor:pointer;font:inherit;color:inherit;background:var(--surface-2);border:1px solid var(--line);border-radius:12px;padding:10px 13px;transition:border-color .15s ease,background .15s ease,transform .05s ease}.historyItem:hover{border-color:var(--accent);background:var(--surface-3, var(--surface-2))}.historyItem:active{transform:scale(.99)}.historyItem:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.historyItem .label{font-weight:700;letter-spacing:.04em}.historyItem .meta{color:var(--faint);font-size:.8rem}.history .clear{background:none;border:none;color:var(--faint);padding:6px;font-size:.78rem;align-self:flex-start}.installNudge{margin-top:16px;width:100%;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:9px;padding:14px 16px;border-radius:14px;font:800 .98rem/1 inherit;color:#fff;background:var(--coral);border:1px solid var(--coral);box-shadow:0 12px 26px -12px var(--coral);transition:filter .15s ease,transform .05s ease}.installNudge:hover{filter:brightness(1.06)}.installNudge:active{transform:scale(.99)}.installNudge:focus-visible{outline:2px solid var(--coral);outline-offset:2px}.iosInstall{margin-top:16px}.iosInstall .installNudge{margin-top:0}.iosSteps{position:relative;margin-top:10px;padding:14px 16px;background:var(--coral-soft);border:1px solid color-mix(in srgb,var(--coral) 35%,transparent);border-radius:14px;color:var(--text)}.iosTitle{margin:0 0 8px;font-weight:800;font-size:.9rem}.iosSteps ol{margin:0;padding-left:20px;display:flex;flex-direction:column;gap:6px;font-size:.85rem;color:var(--muted)}.iosSteps ol b{color:var(--text)}.iosClose{position:absolute;top:8px;right:8px;width:26px;height:26px;padding:0;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;background:transparent;border:0;border-radius:999px;color:var(--faint);font-size:1.1rem;line-height:1}.iosClose:hover{color:var(--text);background:color-mix(in srgb,var(--text) 8%,transparent)}.ambient{display:flex;flex-direction:column;gap:14px;flex:1}.ambientHead{text-align:center;padding:12px 0}.ambientHead .message{color:var(--muted);font-size:1.05rem;margin:8px 0 0;line-height:1.5}.ambientHead .pulseRing{width:64px;height:64px;margin:0 auto 4px;border-radius:50%;display:grid;place-items:center;color:var(--accent);background:var(--accent-soft);border:1px solid var(--correct-border)}.ambientActions{display:grid;gap:12px}@media(min-width:720px){.ambientActions{grid-template-columns:1fr 1fr;align-items:start}}.moodGrid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.moodGrid button{padding:14px 12px}.moodGrid button.selected{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}.questionComposer{display:flex;flex-direction:column;gap:10px}.sectionTitle{font-size:.72rem;text-transform:uppercase;letter-spacing:.09em;color:var(--faint);font-weight:900;margin:2px}.standby{display:grid;place-items:center;gap:14px;text-align:center;flex:1;color:var(--muted);padding:40px 0}.spin{animation:spin 1.1s linear infinite;color:var(--accent)}@keyframes spin{to{transform:rotate(360deg)}}.spotlight{display:flex;flex-direction:column;gap:14px;flex:1}.prompt{display:flex;gap:10px;align-items:flex-start}.prompt svg{color:var(--accent);flex:none;margin-top:2px}.prompt p{margin:0;font-size:1.12rem;line-height:1.45;font-weight:600}.optionList{display:grid;gap:10px}@media(min-width:720px){.optionList.mcq{grid-template-columns:1fr 1fr}}.optionList button{width:100%;text-align:left;justify-content:flex-start;padding:15px 16px;font-size:1.02rem}.optionList button.selected{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}.inputRow{display:flex;flex-direction:column;gap:10px}.sliderValue{text-align:center;font-size:1.4rem;font-weight:800;color:var(--accent)}input[type=range]{width:100%;accent-color:var(--accent)}.lockChip{display:inline-flex;align-self:flex-start;gap:8px;align-items:center;background:var(--surface-2);border:1px solid var(--border-2);border-radius:999px;padding:8px 14px;font-weight:700;color:var(--muted);font-size:.9rem}.lockChip.paused{background:var(--gold-soft);border-color:var(--gold);color:var(--eyebrow)}.reveal{border-radius:var(--radius);padding:20px;text-align:center;display:flex;flex-direction:column;gap:8px;align-items:center;border:1px solid var(--border)}.reveal .icon{width:56px;height:56px;display:grid;place-items:center;border-radius:50%}.reveal strong{font-size:1.2rem}.reveal .answer{color:var(--muted)}.reveal.correct{background:var(--correct-bg);border-color:var(--correct-border);color:var(--correct-ink)}.reveal.correct .icon{background:var(--correct-border);color:var(--correct-ink);animation:pop .5s ease}.reveal.incorrect{background:var(--support-bg);border-color:var(--support-border);color:var(--support-ink)}.reveal.incorrect .icon{background:var(--support-border);color:var(--support-ink)}.reveal.unanswered{background:var(--surface-2)}@keyframes pop{0%{transform:scale(.4);opacity:0}60%{transform:scale(1.15)}to{transform:scale(1);opacity:1}}.confetti{position:fixed;inset:0;pointer-events:none;overflow:hidden;z-index:5}.confetti i{position:absolute;top:-12px;width:9px;height:14px;border-radius:2px;animation:fall linear forwards}@keyframes fall{to{transform:translateY(105vh) rotate(540deg);opacity:.9}}.resource{display:flex;flex-direction:column;gap:10px;flex:1}.resourceFrame{width:100%;min-height:420px;flex:1;border:1px solid var(--border);border-radius:12px;background:var(--surface)}.resourceOpen{align-self:center;color:var(--accent);font-weight:700;text-decoration:none}.touchStage{position:relative;border-radius:12px;overflow:hidden;border:1px solid var(--border);touch-action:none}.touchStage img{width:100%;display:block}.touchStage.paused img{filter:grayscale(.5) brightness(.85)}.touchStage .freeze,.freezeNote{position:absolute;inset:auto 0 0;text-align:center;padding:8px;background:#0000008c;color:#fff;font-weight:700}.touchStage .answer{position:absolute;transform:translate(-50%,-50%);border:3px solid var(--gold);border-radius:50%;background:#c98a1640}.statusControls{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.statusControls button{flex-direction:column;gap:4px;font-size:.8rem;text-transform:capitalize;padding:10px 6px}.statusControls button.selected{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}.closedBanner{display:flex;gap:10px;align-items:center;justify-content:center;background:var(--accent-soft);color:var(--accent-soft-ink);border:1px solid var(--correct-border);border-radius:12px;padding:12px;font-weight:700}.notice{color:var(--faint);font-size:.82rem;text-align:center;margin:4px 0 0;min-height:1.1em}.legal{color:var(--faint);font-size:.72rem;text-align:center;margin:18px 0 4px;opacity:.85}.reconnectChip{display:inline-flex;align-items:center;gap:7px;align-self:center;margin:2px auto 0;padding:6px 12px;border-radius:999px;font-size:.78rem;font-weight:700;color:var(--eyebrow);background:var(--gold-soft);border:1px solid color-mix(in srgb,var(--gold) 50%,transparent)}.reconnectChip .spin{color:currentColor}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}.confetti{display:none}}.authPage{min-height:100dvh;display:grid;place-items:center;padding:24px;background:var(--bg, #f4efe4);color:var(--ink, #172033)}.authCard{width:min(100%,420px);padding:32px;border:1px solid color-mix(in srgb,currentColor 12%,transparent);border-radius:24px;background:var(--panel, #fffdf7);box-shadow:0 24px 70px -42px #1720338c;text-align:center}.authBrand{display:inline-block;margin-bottom:18px;color:var(--muted, #4c5c63);font-size:1rem;font-weight:800;letter-spacing:.02em}.authBrand span{color:var(--accent, #28b09f)}.authCard h1{margin:0;font-size:clamp(1.8rem,7vw,2.5rem)}.authCard p{margin:12px 0 24px;color:var(--muted, #4c5c63);line-height:1.55}.authCard button,.authAccountActions button,.profilePanel button{border:0;border-radius:999px;cursor:pointer;font:inherit;font-weight:800}.authCard button{padding:12px 20px;background:var(--accent, #126c63);color:#fff}.authCard button:disabled{cursor:wait;opacity:.68}.profileSetupForm{display:grid;gap:12px;text-align:left}.profileSetupForm label{color:var(--ink, #172033);font-weight:800}.profileSetupForm input{width:100%;border:1px solid color-mix(in srgb,var(--ink, #172033) 24%,transparent);border-radius:12px;padding:12px 14px;background:#fff;color:var(--ink, #172033);font:inherit}.profileSetupForm input:focus-visible{outline:3px solid color-mix(in srgb,var(--accent, #126c63) 30%,transparent);outline-offset:2px}.authCard .profileSetupError{margin:0;color:#9f2d20;font-size:.92rem}.authCard .authTextAction{margin-top:18px;padding:8px 12px;background:transparent;color:var(--muted, #4c5c63);text-decoration:underline}.profileFid{display:block;margin:4px auto 10px;color:var(--ink, #172033);font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:clamp(1.8rem,8vw,2.6rem);font-weight:900;letter-spacing:.12em}.authCard .profileConfirmedName{margin:0 0 24px;color:var(--ink, #172033);font-weight:800}.authBusy{display:inline-block;width:28px;height:28px;border:3px solid color-mix(in srgb,var(--accent, #126c63) 22%,transparent);border-top-color:var(--accent, #126c63);border-radius:50%;animation:auth-spin .8s linear infinite}.authAccountActions{position:fixed;right:14px;bottom:14px;z-index:30;display:flex;gap:8px}.authAccountActions button{padding:9px 14px;border:1px solid color-mix(in srgb,currentColor 16%,transparent);background:color-mix(in srgb,var(--panel, #fffdf7) 94%,transparent);color:var(--muted, #4c5c63);box-shadow:0 8px 24px -14px #1720338c}.profileOverlay{width:min(calc(100% - 32px),420px);max-width:none;border:0;padding:0;background:transparent;color:var(--ink, #172033)}.profileOverlay::backdrop{background:#1720337a;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}.profilePanel{padding:30px;border:1px solid color-mix(in srgb,currentColor 12%,transparent);border-radius:24px;background:var(--panel, #fffdf7);box-shadow:0 24px 70px -32px #172033b8;text-align:center}.profilePanel h2{margin:0 0 14px;font-size:1.8rem}.profilePanel .profileConfirmedName{margin-bottom:22px}.profileLabel{display:block;color:var(--muted, #4c5c63);font-size:.85rem;font-weight:800;letter-spacing:.04em;text-transform:uppercase}.profilePanel .profileHint{margin:4px 0 22px;color:var(--muted, #4c5c63);line-height:1.5}.profilePanel button{padding:11px 22px;background:var(--accent, #126c63);color:#fff}@keyframes auth-spin{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){.authBusy{animation:none}}