:root{--ink:#19382f;--forest:#233f38;--green:#267548;--muted:#52655e;--line:#d8e3dd;--bg:#f3f7f4;--surface:#fff;--purple:#654294;--purple-soft:#efe8f8;--gold:#edbf4c;--red:#af3d2d;--radius:14px;--font:'Atkinson Hyperlegible',Arial,sans-serif;color-scheme:light;font-family:var(--font);font-size:16px;line-height:1.5;color:var(--ink);background:var(--bg)}
*{box-sizing:border-box}body{margin:0}h1,h2,h3,p{margin:0}h1,h2,h3{text-wrap:balance;line-height:1.15}h1{font-size:2.5rem;letter-spacing:-.025em}h2{font-size:1.5rem}h3{font-size:1.125rem}p{max-width:68ch}a{color:inherit}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.6}a{text-underline-offset:4px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,main:focus-visible{outline:3px solid #8d67bd;outline-offset:4px}[hidden]{display:none!important}.skip-link{position:fixed;top:-100px;left:1rem;background:#fff;padding:1rem;z-index:20}.skip-link:focus{top:1rem}.icon{width:20px;height:20px;flex:none;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.site-header{background:var(--surface);border-bottom:1px solid var(--line)}.header-inner{max-width:1328px;padding:14px 32px;margin:auto;display:flex;gap:36px;align-items:center;min-height:76px}.wordmark{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:700;font-size:1.8rem;letter-spacing:-.04em}.wordmark img{width:40px;height:40px}.brand-dot{color:var(--purple)}nav{display:flex;gap:6px;align-items:center}nav a{padding:8px 14px;text-decoration:none;border-radius:8px;font-weight:700;color:var(--muted)}nav a[aria-current=page]{background:#e7f0e9;color:var(--ink)}nav a:hover{background:#eef3ef}.viewer-nav{margin-left:auto;display:flex;gap:12px;align-items:center}.viewer-name{font-size:.875rem;max-width:200px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.avatar{height:34px;width:34px;display:grid;place-items:center;background:var(--purple-soft);color:var(--purple);border-radius:50%;font-size:.8rem;font-weight:700}.viewer-ident{display:flex;gap:8px;align-items:center}.logout-button{border:0;background:none;color:var(--muted);display:grid;place-items:center;padding:8px;border-radius:8px}.logout-button:hover{background:#edf3ef}#content{max-width:1328px;margin:auto;padding:40px 32px 72px;min-height:calc(100vh - 170px);outline:none}.site-footer{border-top:1px solid var(--line);padding:22px 32px;max-width:1328px;margin:auto;display:flex;gap:24px;justify-content:space-between;color:var(--muted);font-size:.8rem}.site-footer a{font-weight:700;text-decoration:none}.btn{display:inline-flex;justify-content:center;align-items:center;gap:9px;text-decoration:none;border:1.5px solid var(--forest);padding:10px 18px;border-radius:9px;background:#fff;color:var(--ink);font-weight:700;line-height:1.35;min-height:44px}.btn:hover{background:#e9f1eb}.btn.primary{background:var(--forest);color:#fff}.btn.primary:hover{background:#31594d}.btn.secondary{border-color:var(--line)}.btn.small{font-size:.875rem;padding:7px 12px;min-height:36px}.text-link{color:var(--forest);font-weight:700;display:inline-flex;align-items:center;gap:8px}.muted{color:var(--muted)}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin:36px 0 18px}.section-heading p{color:var(--muted);margin-top:7px}.page-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:30px}.page-head p{margin-top:10px;color:var(--muted);font-size:1.0625rem}.page-head h1{margin-top:8px}.crumbs{display:flex;gap:8px;align-items:center;font-size:.9rem;color:var(--muted);margin-bottom:20px}.crumbs a{text-decoration:none}.crumbs a:hover{text-decoration:underline}.tag{font-size:.8rem;font-weight:700;display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:99px;background:#eaf0ec;color:#3e584b;white-space:nowrap}.tag.live{color:#205d39;background:#dff1e4}.tag.live::before{content:'';width:7px;height:7px;border-radius:50%;background:#25834b}.tag.pause{color:#785012;background:#fff0ca}.tag.purple{background:var(--purple-soft);color:var(--purple)}.tag.gold{background:#faecc5;color:#6e4c08}.empty{padding:40px 24px;text-align:center;color:var(--muted);border:1px dashed #b8c9bf;border-radius:12px;background:#fff}.empty h2,.empty h3{color:var(--ink);margin-bottom:8px}.empty p{margin-inline:auto}.empty .btn{margin-top:18px}.page-loading{padding:80px 24px;display:flex;gap:12px;align-items:center;justify-content:center;color:var(--muted)}.loading-dot{width:12px;height:12px;background:var(--green);border-radius:50%;animation:loading 1s ease-in-out infinite alternate}@keyframes loading{to{opacity:.25}}.network-notice{padding:10px 24px;background:#fff0cb;color:#69470c;text-align:center;font-size:.9rem}.network-notice button{color:inherit;font-weight:700;background:none;border:0;text-decoration:underline}.error-text{color:var(--red);font-size:.9rem;margin-top:12px}.notice{padding:14px 18px;background:#edf3ef;border:1px solid var(--line);border-radius:10px;color:var(--muted);margin-bottom:20px}.notice a{font-weight:700}.noscript{padding:24px}.landing{display:grid;grid-template-columns:1.1fr 1fr;align-items:center;gap:64px;min-height:510px;padding-block:24px}.landing h1{font-family:'Bungee',Arial,sans-serif;font-size:3.6rem;font-weight:400;line-height:1.09;letter-spacing:-.025em;max-width:11ch}.landing h1 span{color:var(--purple)}.landing-lead{font-size:1.2rem;margin-top:20px;max-width:38ch;color:var(--muted)}.school-label{display:inline-flex;gap:8px;align-items:center;font-weight:700;color:#4c6557;font-size:.875rem;margin-bottom:20px}.login-block{margin-top:28px}.login-block .login-note{font-size:.8rem;color:var(--muted);margin-top:10px}.google-box{min-height:44px;margin-top:14px}.landing-links{display:flex;gap:24px;align-items:center;margin-top:24px;flex-wrap:wrap}.sleep-scene{position:relative;min-height:440px;border-radius:16px;background:#213e35;color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;overflow:hidden}.sleep-scene::before{content:'☾';position:absolute;top:22px;right:35px;font-size:76px;line-height:1;color:#f4d36d;transform:rotate(-18deg)}.sleep-scene .hero-mascot{width:280px;height:280px;position:relative;z-index:1;margin-top:25px}.scene-caption{font-size:1.25rem;font-weight:700;z-index:1;text-align:center;padding:0 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strong{font-size:1.5rem}.preview-team .mascot{width:70px;height:70px}.preview-team .medal{font-size:1.6rem}.preview-team span{display:block;font-size:.9rem;color:var(--muted)}.mascot{width:110px;height:110px;flex:none;background-image:url('/assets/mascotte-atlas.png');background-size:400% 300%;background-position:0 0;background-repeat:no-repeat}.mascot[data-mascot=marmot]{background-image:url('/assets/marmotta.svg');background-size:contain;background-position:center}.mascot[data-mascot=cat]{background-position-y:50%}.mascot[data-mascot=bear]{background-position-y:100%;background-size:400% 280%}.dashboard-intro{display:flex;justify-content:space-between;gap:24px;align-items:center;margin-bottom:28px}.dashboard-intro h1{margin-bottom:10px}.dashboard-intro p{color:var(--muted);font-size:1.0625rem}.today-note{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:.875rem;color:var(--muted);margin-top:14px}.live-banner{background:var(--forest);color:#fff;padding:18px 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.btn.primary{background:#f0ca62;border-color:#f0ca62;color:#3c3013}.class-cover .cover-actions{display:flex;flex-direction:column;align-items:start;gap:10px}.cover-actions .muted{color:#d2e4d8;font-size:.8rem;max-width:25ch}.stat-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:34px}.stat-strip>div{padding:20px 24px;border-right:1px solid var(--line);min-width:0}.stat-strip>div:last-child{border:0}.stat-strip dt{color:var(--muted);font-size:.875rem}.stat-strip dd{margin:6px 0 0;font-size:1.9rem;line-height:1.1;font-weight:700;font-variant-numeric:tabular-nums}.stat-strip .xp-value{color:var(--purple)}.stat-strip small{display:block;font-size:.8rem;color:var(--muted);margin-top:7px;overflow-wrap:anywhere}.class-detail-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:30px;align-items:start}.history-block{min-width:0}.history-block .section-heading{margin-top:0}.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:12px;background:#fff}.data-table{width:100%;border-collapse:collapse;text-align:left;font-size:.9rem}.data-table caption{text-align:left;padding:16px 20px;font-weight:700}.data-table th{font-size:.75rem;font-weight:700;color:var(--muted);padding:13px 16px;background:#f7faf8;white-space:nowrap}.data-table td{padding:16px;border-top:1px solid #e2eae5;vertical-align:middle;white-space:nowrap;font-variant-numeric:tabular-nums}.data-table td small{display:block;font-size:.75rem;color:var(--muted);margin-top:3px;white-space:normal}.data-table .teacher-cell{white-space:normal;min-width:125px}.data-table .xp-cell{color:var(--purple);font-weight:700}.table-link{font-weight:700;text-decoration:none;display:inline-flex;gap:6px;align-items:center}.table-link:hover{text-decoration:underline}.table-link svg{width:14px;height:14px}.teacher-list{list-style:none;margin:16px 0 0;padding:0}.teacher-list li{padding:15px 0;border-bottom:1px solid var(--line);display:flex;gap:12px}.teacher-list .avatar{flex:none}.teacher-list strong{font-size:.9rem}.teacher-list span span{display:block;color:var(--muted);font-size:.8rem;margin-top:3px}.teachers-note{font-size:.8rem;color:var(--muted);margin-top:18px}.pagination{display:flex;justify-content:space-between;gap:16px;align-items:center;margin-top:16px;font-size:.85rem;color:var(--muted)}.mascot-select{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px;margin-top:26px}.mascot-select .field{display:flex;gap:12px;align-items:center;margin-top:12px}.field label{font-weight:700;font-size:.9rem}.field select{flex:1;min-width:0}.mascot-select .btn{margin-top:12px}.mascot-select .help{color:var(--muted);font-size:.8rem;margin-top:10px}.leader-intro{display:flex;align-items:center;justify-content:space-between;gap:30px;margin-bottom:28px}.leader-intro h1{font-size:3rem}.leader-intro p{margin-top:12px;color:var(--muted);max-width:52ch}.trophy-seal{flex:none;width:100px;height:100px;background:#fae6a3;border-radius:50%;display:grid;place-items:center}.trophy-seal svg{width:50px;height:50px;color:#7a5613;stroke-width:1.5}.metric-tabs{display:flex;gap:4px;border:1px solid var(--line);padding:4px;border-radius:10px;background:#fff;width:max-content;max-width:100%;margin-bottom:12px}.metric-tabs button{border:0;background:transparent;color:var(--muted);padding:9px 18px;border-radius:7px;font-weight:700;white-space:nowrap}.metric-tabs button[aria-pressed=true]{background:var(--forest);color:#fff}.metric-help{font-size:.875rem;color:var(--muted);margin-bottom:24px}.podium{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:end;margin-bottom:28px}.podium-team{display:flex;flex-direction:column;align-items:center;background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 20px 22px;text-align:center;text-decoration:none;position:relative}.podium-team:first-child{padding-top:24px;border:2px solid #d4ad4b;background:#fffbed}.podium-team .mascot{width:120px;height:120px}.podium-team h2{font-size:1.7rem}.podium-team .place{font-weight:700;color:#70501b;font-size:.8rem}.podium-team .leader-value{font-weight:700;color:var(--purple);font-size:1.5rem;margin-top:8px}.podium-team small{font-size:.8rem;color:var(--muted);margin-top:4px}.ranking-table td:first-child{font-size:1.15rem;font-weight:700;width:55px}.ranking-class{display:flex;align-items:center;gap:12px;text-decoration:none;font-weight:700;font-size:1.1rem}.ranking-class .mascot{width:50px;height:50px}.ranking-table .progress-cell{min-width:160px}.ranking-bar{height:6px;background:#e7dfef;border-radius:6px;overflow:hidden;margin-top:5px}.ranking-bar i{height:100%;background:var(--purple);display:block}.graph-panel{border-radius:12px;border:1px solid var(--line);padding:24px;background:#fff;margin-block:24px}.graph-heading{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:20px}.graph-legend{display:flex;gap:16px;font-size:.8rem;color:var(--muted)}.graph-legend i{width:9px;height:9px;border-radius:50%;display:inline-block;margin-right:5px}.history-graph{display:block;width:100%;height:auto;min-height:160px;max-height:350px;overflow:visible}.graph-footnote{font-size:.8rem;color:var(--muted);margin-top:14px}.lesson-metadata{display:flex;gap:12px;flex-wrap:wrap;margin-top:14px}.loading-card{height:270px;background:#e5eee8;border-radius:14px}.inline-status{font-size:.85rem;color:var(--green);margin-top:10px}
@media(min-width:1550px){.landing h1{font-size:4rem}}
@media(max-width:1000px){.header-inner{gap:18px}.viewer-name{max-width:130px}.landing{gap:30px}.landing h1{font-size:3rem}.sleep-scene{min-height:400px}.class-detail-layout{grid-template-columns:minmax(0,1fr)}.teachers-panel{display:grid;grid-template-columns:1fr 1fr;gap:24px}.mascot-select{margin-top:0}.class-cover{gap:20px;padding:26px}.class-cover>.mascot{width:120px;height:120px}.stat-strip>div{padding:18px}.class-cover h1{font-size:2.2rem}.class-card{padding:18px}}
@media(max-width:720px){.header-inner{padding:12px 18px;gap:12px;flex-wrap:wrap}.wordmark{font-size:1.55rem}.wordmark img{width:32px;height:32px}.viewer-name{display:none}nav{order:3;width:100%;border-top:1px solid var(--line);padding-top:8px;gap:8px}nav a{padding:6px 12px}.site-footer{padding:20px;flex-wrap:wrap;gap:10px 24px}.site-footer span:last-child{width:100%}#content{padding:26px 18px 48px}h1{font-size:2rem}.landing{grid-template-columns:1fr;gap:28px;padding-block:8px}.landing h1{font-size:2.8rem;max-width:13ch}.landing-lead{font-size:1.1rem}.sleep-scene{min-height:330px}.sleep-scene .hero-mascot{height:210px;width:210px}.scene-label{font-size:.8rem}.scene-caption{font-size:1.1rem}.how-it-works{flex-direction:column;gap:24px}.landing-links{gap:18px}.dashboard-intro{align-items:start}.dashboard-intro h1{font-size:2rem}.live-banner{min-width:0;padding:12px 16px;max-width:110px}.live-banner strong{font-size:1.3rem}.live-banner span{font-size:.75rem}.search-sort{flex-wrap:wrap;gap:12px}.search-wrap{max-width:none;flex-basis:100%}.sort-wrap{margin-left:0}.filter-row .check-filter{margin-left:0;margin-top:3px}.class-grid{grid-template-columns:repeat(auto-fill,minmax(245px,1fr));gap:14px}.class-cover{grid-template-columns:88px minmax(0,1fr);padding:22px 18px;gap:16px}.class-cover>.mascot{width:88px;height:100px}.class-cover h1{font-size:2.1rem}.class-cover .cover-actions{grid-column:1/-1;flex-direction:row;flex-wrap:wrap;align-items:center}.class-cover .cover-actions .btn{flex:1}.class-cover .cover-actions small{flex-basis:100%}.stat-strip{grid-template-columns:1fr 1fr}.stat-strip>div{padding:16px 18px}.stat-strip>div:nth-child(2){border-right:0}.stat-strip>div:nth-child(-n+2){border-bottom:1px solid var(--line)}.stat-strip dd{font-size:1.65rem}.teachers-panel{grid-template-columns:1fr}.page-head{align-items:start;flex-wrap:wrap;gap:18px}.page-head h1{font-size:2rem}.leader-intro h1{font-size:2.3rem}.trophy-seal{width:72px;height:72px}.trophy-seal svg{width:38px;height:38px}.podium{gap:9px}.podium-team{padding:12px 8px 16px}.podium-team:first-child{padding-top:17px}.podium-team .mascot{width:85px;height:85px}.podium-team h2{font-size:1.35rem}.podium-team .leader-value{font-size:1.1rem}.podium-team small{font-size:.7rem}.metric-tabs button{padding:9px 13px;font-size:.875rem}.leader-intro{gap:15px}.graph-panel{padding:20px 14px}.graph-heading{align-items:start;flex-direction:column}.section-heading{align-items:start}.preview-team{min-width:100%}}
@media(max-width:380px){.landing h1{font-size:2.4rem}.class-cover h1{font-size:1.8rem}.podium-team .mascot{width:70px;height:70px}.metric-tabs button{padding:8px 10px}.viewer-nav .btn{padding:8px 12px}.dashboard-intro{flex-direction:column}.live-banner{max-width:none;flex-direction:row;align-items:center;gap:10px}.live-banner span{margin:0}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
.sr-only{position:absolute!important;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}.text-button{display:inline-flex;align-items:center;gap:6px;border:0;background:none;color:var(--muted);font-size:.8rem;text-decoration:underline;text-underline-offset:3px;padding:0}.text-button svg{width:14px;height:14px}.unit{font-size:1rem}.mascot-select .check-filter{display:flex;gap:8px;align-items:center;margin-top:14px;font-size:.85rem}.crumbs a{display:inline-flex;align-items:center;gap:5px}

/* A single catalogue drives class portraits and the classroom sprite sheet. */
.mascot{background-image:var(--mascot-sheet);background-size:var(--mascot-size);background-position:0 var(--mascot-row);background-repeat:no-repeat}
.mascot[data-mascot=cat],.mascot[data-mascot=bear]{background-size:var(--mascot-size);background-position:0 var(--mascot-row)}
.mascot[data-mascot=marmot]{background-image:var(--mascot-sheet);background-size:contain;background-position:center}
.archive-note{font-size:.85rem;color:var(--muted);margin:-12px 0 28px;padding:12px 16px;border-left:3px solid var(--line)}

/* The classroom frame stays mounted while the teacher browses the portal. */
#lesson-frame{position:fixed;inset:0;width:100%;height:100dvh;border:0;background:var(--bg);z-index:80}
#lesson-frame.lesson-parked{transform:translateX(-200vw);pointer-events:none}
body.show-lesson{overflow:hidden}body.show-lesson>.site-header,body.show-lesson>#content,body.show-lesson>.site-footer{visibility:hidden}
.active-lesson{position:fixed;bottom:18px;left:50%;transform:translateX(-50%);z-index:90;display:flex;align-items:center;gap:18px;width:min(720px,calc(100% - 32px));padding:16px 20px;border:1px solid #9fbaaa;background:#fff;border-radius:14px;box-shadow:0 8px 32px #19382f26}.active-lesson p{font-size:.875rem;color:var(--muted)}.active-lesson>div{flex:1}.active-dot{width:12px;height:12px;border-radius:50%;background:var(--green);flex:none}.has-active-lesson .site-footer{padding-bottom:120px}
.hour-prompt{position:fixed;top:20px;left:50%;transform:translateX(-50%);z-index:110;display:flex;align-items:center;gap:22px;width:min(960px,calc(100% - 32px));padding:24px;background:#fff9e8;border:2px solid #be8c21;border-radius:16px;box-shadow:0 10px 40px #19382f35}.hour-symbol{font-size:3rem}.hour-prompt h2{font-size:1.5rem}.hour-prompt p{font-size:1.35rem;margin-top:6px}.hour-prompt small{display:block;color:#675025;margin-top:8px}.hour-actions{display:flex;gap:12px;margin-left:auto;flex:none}.hour-actions .btn{font-size:1.15rem;min-height:54px}.lesson-conflict{max-width:600px;margin:60px auto}.lesson-conflict .cover-actions{display:flex;gap:16px;flex-wrap:wrap;margin-top:24px}
@media(max-width:720px){.active-lesson{gap:10px;flex-wrap:wrap;padding:14px}.active-lesson>div{flex-basis:75%}.active-lesson .btn{flex:1}.hour-prompt{gap:12px;padding:18px;flex-wrap:wrap}.hour-symbol{font-size:2rem}.hour-prompt h2{font-size:1.2rem}.hour-prompt p{font-size:1.1rem}.hour-actions{width:100%;margin:0}.hour-actions .btn{flex:1}.has-active-lesson .site-footer{padding-bottom:170px}}

body.show-lesson>#network-notice{position:fixed;top:0;left:0;right:0;z-index:130}

.lesson-result{margin:0 0 32px;padding:24px;border:1px solid #d5b55d;background:#fff9e7;border-radius:14px}.result-heading{display:flex;gap:16px;align-items:center}.result-trophy{font-size:2.3rem}.result-heading p{font-size:.75rem;letter-spacing:.05em;font-weight:700;color:#76591d}.result-heading h2{font-size:1.75rem;margin-top:4px}.result-heading .text-button{margin-left:auto}.result-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin:24px 0}.result-stats dt{font-size:.85rem;color:#655527}.result-stats dd{margin:5px 0 0;font-size:2rem;font-weight:700;color:#654294}.result-stats small{font-size:.9rem;color:#276342}.result-rewards{border-top:1px solid #e5d8ae;padding-top:16px;display:flex;align-items:center;gap:12px;flex-wrap:wrap}.result-rewards>strong{font-size:.875rem}.result-rewards>span{display:inline-flex;align-items:center;gap:6px;background:#e5f0dc;color:#285235;border-radius:8px;padding:6px 12px;font-size:.9rem}.result-rewards>span svg{width:17px;height:17px}.result-rewards>p{font-size:.9rem;color:#655527}
@media(max-width:720px){.lesson-result{padding:20px}.result-heading{flex-wrap:wrap;gap:12px}.result-heading h2{font-size:1.5rem}.result-heading .text-button{width:100%;margin:0}.result-stats{grid-template-columns:1fr 1fr;gap:18px}.result-stats dd{font-size:1.7rem}}