:root{font-family:Inter,Pretendard,"Segoe UI","Malgun Gothic",sans-serif;color:#14110f;background:#f3f3f4;font-synthesis:none;--ink:#14110f;--dark:#34312d;--muted:#7e7f83;--sand:#d9c5b2;--paper:#f3f3f4;--line:#dedcda}*{box-sizing:border-box}body{margin:0;font-size:16px;line-height:1.6}button,input,select,textarea{font:inherit}button,a{touch-action:manipulation}a{color:inherit;text-decoration:none}button{cursor:pointer}button:disabled{opacity:.5;cursor:not-allowed}input,select,textarea{width:100%;padding:11px 13px;border:1px solid #c9c6c3;background:white;border-radius:7px;color:var(--ink)}input[type=checkbox],input[type=radio]{width:18px;height:18px;accent-color:var(--dark)}input:focus,select:focus,textarea:focus,button:focus-visible,a:focus-visible{outline:2px solid #7b5f45;outline-offset:3px}textarea{min-height:140px;resize:vertical}label{display:block;font-weight:600;font-size:14px;margin-bottom:7px}small,.muted{color:#68686d}small{font-size:13px}.topbar{position:sticky;top:0;z-index:10;border-bottom:1px solid var(--line);background:rgba(243,243,244,.96);backdrop-filter:blur(12px)}.nav-inner{max-width:1440px;margin:auto;min-height:83px;padding:0 36px;display:flex;align-items:center;gap:34px}.brand{display:flex;align-items:center;gap:10px;white-space:nowrap;font-weight:800;font-size:20px;letter-spacing:-.8px}.brand-mark{display:grid;place-items:center;width:36px;height:36px;background:var(--ink);color:var(--sand);border-radius:9px;font-size:23px;font-family:monospace}.nav{display:flex;gap:25px;align-self:stretch;align-items:center;flex:1}.nav a{position:relative;font-size:14px;font-weight:600;white-space:nowrap;color:#64615e;padding:29px 0}.nav a.active{color:var(--ink)}.nav a.active:after{content:'';height:3px;background:var(--dark);position:absolute;bottom:0;left:0;right:0}.account{display:flex;align-items:center;gap:10px;font-size:13px;white-space:nowrap}.avatar{border-radius:50%;width:33px;height:33px;display:grid;place-items:center;background:var(--sand);font-weight:700}.btn{border:1px solid var(--line);background:white;padding:10px 17px;border-radius:7px;font-size:14px;font-weight:600;display:inline-flex;align-items:center;justify-content:center;gap:8px;color:var(--ink);white-space:nowrap}.btn:hover{background:#e8e4e0}.btn.primary{background:var(--ink);border-color:var(--ink);color:var(--paper)}.btn.primary:hover{background:#45413d}.btn.sand{background:var(--sand);border-color:var(--sand)}.btn.small{padding:6px 11px;font-size:13px}.btn.ghost{background:transparent;border-color:transparent}.btn.danger{color:#9f2947}.layout{max-width:1320px;padding:40px 36px 64px;margin:auto;min-height:calc(100vh - 155px)}.breadcrumb{font-size:13px;color:#68686d;letter-spacing:.2px;margin-bottom:20px}.title-row{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:28px}h1{font-size:32px;line-height:1.25;letter-spacing:-1.1px;margin:4px 0 10px}h2{font-size:21px;letter-spacing:-.5px;margin:0 0 18px}h3{font-size:17px;margin:0 0 12px}.eyebrow{font-size:12px;letter-spacing:2px;font-weight:700;color:#7e7f83;text-transform:uppercase}.hero{display:grid;grid-template-columns:1.65fr 1fr;background:var(--dark);color:var(--paper);border-radius:14px;overflow:hidden;margin-bottom:30px;min-height:275px;position:relative}.hero-main{padding:38px 40px;position:relative}.hero .eyebrow{color:var(--sand)}.hero h1{font-size:38px;margin:16px 0}.hero p{color:#d5d2d0;margin:0 0 22px}.hero-side{border-left:1px solid #5a534d;margin:30px 0;padding:0 30px;display:flex;flex-direction:column;justify-content:center;gap:20px}.hero-stat{display:flex;justify-content:space-between;align-items:end;border-bottom:1px solid #5a534d;padding-bottom:13px;color:var(--sand)}.hero-stat strong{font-size:28px;color:white;font-weight:500}.hero-upload{position:absolute;right:12px;top:12px}.grid{display:grid;gap:24px}.cols2{grid-template-columns:1fr 1fr}.cols3{grid-template-columns:repeat(3,1fr)}.home-grid{grid-template-columns:1.45fr 1fr}.panel{background:#fff;border:1px solid var(--line);border-radius:11px;overflow:hidden}.panel.pad{padding:26px}.panel-head{padding:22px 25px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}.panel-head h2{margin:0;font-size:19px}.list-row{padding:18px 25px;border-bottom:1px solid #eeedec;display:flex;align-items:center;justify-content:space-between;gap:16px}.list-row:last-child{border-bottom:0}.list-row:hover{background:#faf9f8}.list-title{font-weight:600;font-size:16px}.list-meta{font-size:13px;color:#75716d;margin-top:4px}.type-icon{width:42px;height:42px;border-radius:9px;background:#f0ece7;display:grid;place-items:center;color:#705d4a;font-family:monospace;font-weight:700;flex-shrink:0}.row{display:flex;align-items:center;gap:12px}.spread{justify-content:space-between}.badge{display:inline-block;padding:3px 9px;background:#eeece9;border-radius:5px;font-size:12px;font-weight:600;white-space:nowrap}.badge.dark{background:var(--dark);color:var(--paper)}.badge.sand{background:#eadecf;color:#614a34}.badge.blue{background:#e4f3ff;color:#00639f}.badge.red{background:#ffe8ee;color:#a50e42}.toolbar{display:flex;gap:12px;flex-wrap:wrap;margin:20px 0}.toolbar input{flex:1;min-width:180px}.toolbar select{width:auto;min-width:140px}.table-wrap{overflow:auto;background:white;border:1px solid var(--line);border-radius:9px}table{width:100%;border-collapse:collapse;white-space:nowrap;font-size:14px}th{text-align:left;font-weight:600;font-size:13px;color:#6c6864;background:#eeece9;padding:13px 19px}td{padding:15px 19px;border-top:1px solid #eeedec}tbody tr:hover{background:#faf9f8}td strong{font-weight:600}td a:hover{text-decoration:underline}.count{font-size:14px;color:#706b67;margin:0 0 14px}.pagination{display:flex;justify-content:center;gap:7px;margin:25px 0}.pagination .btn{min-width:36px;padding:6px 10px}.pagination .current{background:var(--dark);color:white}.footer{max-width:1320px;margin:auto;padding:23px 36px;border-top:1px solid var(--line);display:flex;justify-content:space-between;color:#7e7f83;font-size:12px}.empty{padding:55px 20px;text-align:center;color:#7e7f83}.tabs{display:flex;gap:8px;border-bottom:1px solid var(--line);margin-bottom:25px;overflow:auto}.tabs a{padding:13px 19px;font-size:14px;white-space:nowrap;border-bottom:3px solid transparent}.tabs .active{border-color:var(--dark);font-weight:700}.fields{display:grid;gap:19px}.field small{display:block;margin-top:6px;font-weight:400}.inline-fields{display:grid;grid-template-columns:repeat(2,1fr);gap:17px}.content-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:24px}.prose{line-height:1.9;overflow-wrap:anywhere}.prose h1{font-size:25px}.prose h2{font-size:21px;margin:24px 0 12px}.prose p{margin:10px 0}.prose ul{padding-left:24px}.prose pre,pre.code{background:#24221f;color:#e3dbd2;border-radius:7px;padding:18px;overflow:auto;line-height:1.7;font-size:14px}.prose code{font-family:Consolas,monospace}.section-title{font-size:19px;border-bottom:1px solid var(--line);padding-bottom:12px;margin-top:25px}.example{background:#f3f3f4;border-radius:6px;padding:15px;white-space:pre-wrap;font-family:monospace}.code-editor{font-family:Consolas,monospace;background:#24221f;color:#f3f3f4;min-height:350px;line-height:1.8;tab-size:4}.note{padding:14px 18px;border-left:3px solid var(--sand);background:#f7f3ef;font-size:14px;margin:16px 0}.room-card{padding:26px;display:block}.room-card h2{margin:16px 0 10px}.room-card:hover{border-color:#b39b84}.section-fold{border:1px solid var(--line);border-radius:9px;background:white;margin-bottom:14px;overflow:hidden}.section-fold summary{padding:18px 22px;cursor:pointer;font-weight:600}.section-fold[open] summary{border-bottom:1px solid var(--line)}.progress{background:#e6e2dd;border-radius:9px;height:7px;min-width:80px;overflow:hidden}.progress span{height:100%;display:block;background:#9c8065}.stat-cell{min-width:120px}.stat-cell strong{display:block;margin-bottom:7px}.status-matrix{text-align:center}.status-matrix td,.status-matrix th{text-align:center}.state-ok{background:#0496ff;color:#fff}.state-no{background:#d81159;color:#fff}.assignment th:first-child,.assignment td:first-child{position:sticky;left:0;background:#f3f3f4;z-index:1}.assignment td:not(:first-child){text-align:center}.assign-cell.selected{background:#eadecf}.choice{display:flex;align-items:center;gap:13px;border:1px solid var(--line);padding:17px;border-radius:8px;margin:11px 0;cursor:pointer}.beaver-bits{display:flex;gap:12px;flex-wrap:wrap;margin:25px 0}.beaver-bits button{font-size:26px;min-width:65px;min-height:65px;border-radius:9px;background:var(--sand);border:0}.beaver-output{min-height:80px;padding:16px;background:#eeece9;letter-spacing:10px;font-size:27px;border-radius:8px}.comment{padding:22px 0;border-top:1px solid var(--line)}.comment p{white-space:pre-wrap;margin:8px 0}.toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);padding:13px 25px;background:var(--ink);color:white;border-radius:8px;z-index:99}.login-surface{min-height:68vh;display:grid;place-items:center}.login-card{width:min(470px,100%);padding:34px}.login-card h1{font-size:30px}dialog{border:1px solid var(--line);border-radius:13px;padding:28px;max-width:650px;width:calc(100% - 40px);box-shadow:0 30px 100px #14110f40;color:var(--ink)}dialog::backdrop{background:#14110f70;backdrop-filter:blur(3px)}.modal-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.modal-head h2{margin:0}.form-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:24px}.error{color:#a51b40;font-size:14px}.upload-zone{padding:24px;border:1px dashed #b9a897;border-radius:8px;background:#fbf8f5}.metric{padding:24px}.metric strong{font-size:28px}.metric p{margin:0;color:#7e7f83;font-size:14px}.toolbar .field{flex:1}.iframe-box{width:100%;min-height:440px;border:1px solid var(--line);border-radius:8px}.hidden{display:none!important}.section-editor{padding:18px;background:#f4f1ed;border-radius:8px;margin-bottom:15px}.section-editor textarea{min-height:75px}.link-muted{font-size:13px;color:#716960}.room-head{border-bottom:1px solid var(--line);margin-bottom:18px;padding-bottom:20px}.warning-inline{font-size:13px;color:#716453}.controls-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.admin-nav{margin-top:25px}.radio-line{display:flex;gap:8px;align-items:center}.radio-line input{width:auto}.subtask-row{display:flex;gap:12px;margin:8px 0}button.icon{background:transparent;border:0;font-size:18px;padding:4px 9px}.file-info{font-size:13px;color:#72675d;margin-top:8px}@media(max-width:1000px){.nav-inner{gap:18px;padding:0 20px;flex-wrap:wrap}.nav{order:3;flex-basis:100%;justify-content:space-between;gap:10px}.nav a{padding:9px 0 13px}.account{margin-left:auto}.layout{padding:28px 20px}.home-grid,.content-layout{grid-template-columns:1fr}.cols3{grid-template-columns:1fr 1fr}.hero h1{font-size:30px}}@media(max-width:640px){.hero{grid-template-columns:1fr}.hero-main{padding:27px}.hero-side{margin:0 27px 25px;padding:0;border-left:0}.cols2,.cols3,.inline-fields,.controls-grid{grid-template-columns:1fr}.brand{font-size:17px}.account .user-name{display:none}.nav a{font-size:12px}.title-row{align-items:flex-start;flex-direction:column}h1{font-size:27px}.footer{flex-direction:column}.hero-side .hero-stat{padding-bottom:6px}.hero-side{gap:8px}.panel.pad{padding:20px}th,td{padding:12px}.tabs a{padding:10px}.toolbar{gap:8px}.toolbar select{flex:1}.btn{padding:9px 12px}}

.account-details{display:grid;grid-template-columns:90px 1fr;gap:10px}.account-details dt{color:var(--muted)}.account-details dd{margin:0;overflow-wrap:anywhere}.streak-panel{margin-top:24px}.streak-scroll{overflow-x:auto;padding:28px 10px}.streak-grid{display:grid;grid-template-rows:repeat(5,24px);grid-template-columns:repeat(20,24px);grid-auto-flow:column;gap:7px;width:max-content;margin:auto}.streak-cell{position:relative;border-radius:5px;background:#e2e0dd;outline-offset:2px}.streak-cell:before{content:"";position:absolute;inset:0;border-radius:inherit;background:#34312d;opacity:var(--strength)}.streak-tooltip{display:none;position:absolute;bottom:110%;left:0;z-index:2;background:#14110f;color:#f3f3f4;white-space:nowrap;padding:4px 8px;border-radius:4px;font-size:12px;pointer-events:none}.streak-cell:hover .streak-tooltip,.streak-cell:focus .streak-tooltip{display:block}.streak-cell:nth-child(n+91) .streak-tooltip{left:auto;right:0}

.content-heading{display:flex;align-items:center;gap:16px;flex-wrap:wrap}.content-heading select{width:auto;min-width:100px}.original-fields{border:1px solid #d9c5b2;border-radius:12px;padding:20px;display:grid;gap:16px}.original-fields legend{padding:0 8px;font-weight:700}

button.teacher-card{font:inherit;color:inherit;text-align:left;cursor:pointer;width:100%}

.ide-toolbar{display:flex;align-items:center;gap:16px;margin:16px 0;flex-wrap:wrap}.ide-toolbar label{display:flex;align-items:center;gap:10px}.ide-toolbar select{width:145px}.ide-workspace{display:grid;grid-template-columns:minmax(0,3fr) minmax(280px,2fr);gap:12px;height:650px}.ide-code-pane,.ide-io-pane{min-width:0;border:1px solid #d9c5b2;background:#fff;border-radius:8px;overflow:hidden;display:flex;flex-direction:column}.ide-pane-head{display:flex;justify-content:space-between;padding:9px 12px;background:#34312d;color:#f3f3f4}.ide-pane-head span{font-size:12px;color:#d9c5b2}#ide-code{flex:1;min-height:0}#ide-input{height:230px;min-height:100px;resize:vertical;overflow:auto}.ide-status{display:flex;gap:12px;padding:7px 10px;font-size:12px;flex-wrap:wrap;border-top:1px solid #d9c5b2}.ide-status label{display:flex;align-items:center;gap:4px}.ide-status input{width:auto}.ide-output-tabs{display:flex;gap:4px;padding:8px;border-top:1px solid #d9c5b2}#ide-output{flex:1;margin:0;padding:12px;overflow:auto;white-space:pre-wrap;overflow-wrap:anywhere;background:#14110f;color:#f3f3f4}#ide-result{padding:8px;margin:0;font-size:12px}.ide-dialog{max-width:500px;padding:24px}.ide-log-dialog{max-width:1000px;width:90%;padding:24px}.ide-workspace .cm-editor{height:100%}.ide-workspace .cm-gutters{background:#f3f3f4}@media(max-width:800px){.ide-workspace{grid-template-columns:1fr;height:auto}.ide-code-pane{height:450px}.ide-io-pane{height:450px}}

#ide-scribble{flex:1;resize:none;border:0;border-radius:0;min-height:120px}#ide-output[hidden],#ide-scribble[hidden]{display:none}

.streak-months{display:grid;grid-template-columns:repeat(20,24px);gap:7px;width:max-content;margin:10px auto 0;color:rgba(126,127,131,.65);font-size:12px;line-height:20px}.streak-months span{white-space:nowrap}.streak-panel{margin-bottom:24px}
/* Administrator pages: consistent insets, wrapping and form spacing. */
.backend-page{line-height:1.65}
.backend-page>.btn:first-child{margin-bottom:20px}
.backend-page>.panel,.backend-page>form,.backend-page>.table-wrap{margin-bottom:24px}
.backend-page .pad{padding:24px}
.backend-page .panel{min-width:0}
.backend-page .grid>.panel{display:block;overflow-wrap:anywhere}
.backend-page .panel h2{margin:0 0 12px}
.backend-page .panel p{margin:12px 0;overflow-wrap:anywhere}
.backend-page .fields{display:grid;gap:20px}
.backend-page label{display:flex;flex-direction:column;align-items:flex-start;gap:8px;min-width:0;overflow-wrap:anywhere}
.backend-page label>input:not([type=checkbox]),.backend-page label>select,.backend-page label>textarea{width:100%;min-width:0}
.backend-page input[type=checkbox]{width:18px;height:18px;vertical-align:middle;flex-shrink:0}
.backend-page .toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:20px}
.backend-page .toolbar>input,.backend-page .toolbar>select,.backend-page .toolbar>label{flex:1 1 220px;min-width:0;max-width:100%}
.backend-page .toolbar .btn,.backend-page .fields>.btn{flex-shrink:0;justify-self:start}
.backend-page input[type=file]{padding:10px;max-width:100%}
.backend-page input[type=file]::file-selector-button{margin-right:12px;padding:8px 12px;border:1px solid var(--line);border-radius:6px;background:var(--paper,#f3f3f4);color:var(--ink)}
.backend-page .backend-file-row+.backend-file-row{border-top:1px solid var(--line)}
.backend-page .backend-file-row strong,.backend-page .backend-file-row small{overflow-wrap:anywhere}
.backend-page .backend-file-row>a{display:inline-block;margin:4px 0 12px}
.backend-page .backend-file-row form{margin:16px 0 0;padding-top:16px;border-top:1px dashed var(--line)}
.backend-page .list-row{padding:18px 24px;gap:16px;flex-wrap:wrap;overflow-wrap:anywhere}
.backend-page details{padding:16px 0;border-bottom:1px solid var(--line)}
.backend-page details:first-child{padding-top:0}.backend-page details:last-child{border-bottom:0}
.backend-page summary{cursor:pointer;overflow-wrap:anywhere}
.backend-page dl{display:grid;grid-template-columns:minmax(90px,140px) minmax(0,1fr);gap:10px 18px;padding:16px;background:#f3f3f4;border-radius:8px}
.backend-page dd{margin:0;overflow-wrap:anywhere}.backend-page dt{font-weight:600;overflow-wrap:anywhere}
.backend-page pre{white-space:pre-wrap;overflow-wrap:anywhere;max-width:100%;padding:16px}
.backend-page #backend-logs-delete-form>label{margin:16px 0}
@media(max-width:640px){.backend-page .pad{padding:20px}.backend-page .list-row{padding:16px 20px}.backend-page .toolbar>input,.backend-page .toolbar>select,.backend-page .toolbar>label{flex-basis:100%}.backend-page dl{grid-template-columns:1fr;gap:4px}.backend-page dd{margin-bottom:12px}.backend-page .title-row .btn{white-space:normal;text-align:left}}

.registrations-panel{margin:24px 0;padding:24px}.registrations-panel .table-wrap{overflow-x:auto}.registrations-panel td{overflow-wrap:anywhere;max-width:260px}.registrations-panel th,.registrations-panel td{padding:12px 16px}.registrations-panel td:last-child{min-width:140px}.registration-pages{justify-content:flex-end;margin-top:16px}

/* Public legal and consent pages */
.legal-document{margin-top:24px;max-width:960px;line-height:1.9;overflow-wrap:anywhere}.legal-document h2{margin-top:32px}.legal-document p{margin:12px 0}.consent-panel{max-width:960px;margin:24px auto;overflow-wrap:anywhere}.consent-panel fieldset{padding:20px;border:1px solid #d9c5b2;border-radius:12px;margin:18px 0}.consent-choices label{display:block;margin:14px 0}.consent-choices input[type=checkbox]{width:auto;margin-right:8px}.consent-panel details{padding:14px;border-bottom:1px solid #d9c5b2}.consent-panel summary{cursor:pointer}.consent-panel small{overflow-wrap:anywhere}.footer a{color:inherit}
.consent-choices dl{margin:16px 0;line-height:1.65}.consent-choices dt{font-weight:700;margin-top:12px}.consent-choices dd{margin:4px 0 12px;overflow-wrap:anywhere}
.service-logo{display:block;object-fit:contain;height:auto;flex-shrink:0}.header-logo{width:190px}.footer{align-items:center;gap:24px}.footer-logo{width:150px}.footer-details{display:flex;flex:1;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}@media(max-width:640px){.header-logo{width:160px}.footer{flex-direction:row;align-items:center;padding:20px;gap:16px}.footer-logo{width:110px}.footer-details{flex-direction:column;align-items:flex-start;gap:8px}}
.keyboard-policy-notice{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);z-index:9999;max-width:calc(100vw - 32px);width:max-content;background:#34312d;color:#f3f3f4;padding:12px 18px;border-radius:8px;pointer-events:none}:focus-visible{outline:3px solid #0496ff;outline-offset:3px}
@media(min-width:1001px) and (max-width:1200px){.nav-inner{gap:18px;padding:0 24px;flex-wrap:wrap}.nav{order:3;flex-basis:100%;justify-content:space-between;gap:12px}.nav a{padding:9px 0 13px}.account{margin-left:auto}}