:root{--edu-bg:#f3f7fb;--edu-surface:#fff;--edu-line:#dce7f1;--edu-text:#163047;--edu-muted:#6b8094;--edu-primary:#1266b3;--edu-dark:#071b30}html[data-theme=dark]{--edu-bg:#081522;--edu-surface:#0f2234;--edu-line:#233a4e;--edu-text:#eaf3fb;--edu-muted:#9cb0c1;--edu-primary:#4aa4ef;--edu-dark:#06121d}*{box-sizing:border-box}body{margin:0;background:var(--edu-bg);color:var(--edu-text);font-family:Inter,"Noto Sans KR",Arial,sans-serif}.edu-topbar{position:sticky;top:0;z-index:30;height:64px;padding:0 max(24px,calc((100vw - 1560px)/2));display:flex;align-items:center;justify-content:space-between;background:var(--edu-dark);color:#fff}.edu-topbar div{display:flex;align-items:center;gap:14px}.edu-topbar a,.edu-topbar button{color:#fff;background:transparent;border:0;text-decoration:none;font-weight:700}.edu-topbar b{font-size:17px}.edu-shell{max-width:1560px;margin:auto;padding:28px}.edu-hero{border-radius:22px;padding:28px 32px;background:linear-gradient(135deg,#071b30,#0f5f9f);color:#fff;display:flex;align-items:center;justify-content:space-between;gap:20px}.edu-hero span{font-size:12px;letter-spacing:.15em;color:#87c9ff}.edu-hero h1{margin:7px 0}.edu-hero p{margin:0;max-width:900px;color:#d8eafb}.primary,.ghost{border-radius:10px;padding:10px 15px;font-weight:800;cursor:pointer}.primary{border:0;background:var(--edu-primary);color:#fff}.edu-hero .primary{background:#fff;color:#0d4f82}.ghost{border:1px solid var(--edu-line);background:var(--edu-surface);color:var(--edu-text)}.edu-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:18px 0}.edu-metrics article{background:var(--edu-surface);border:1px solid var(--edu-line);border-radius:16px;padding:18px}.edu-metrics small{color:var(--edu-muted)}.edu-metrics b{display:block;font-size:27px;margin-top:8px}.edu-tabs{display:flex;gap:8px;overflow:auto;margin:20px 0}.edu-tabs button{white-space:nowrap;border:1px solid var(--edu-line);border-radius:999px;padding:10px 15px;background:var(--edu-surface);color:var(--edu-text);font-weight:800}.edu-tabs button.active{background:var(--edu-dark);color:#fff;border-color:var(--edu-dark)}.edu-tab{display:none}.edu-tab.active{display:block}.edu-grid.two{display:grid;grid-template-columns:minmax(460px,.9fr) minmax(650px,1.3fr);gap:18px}.panel{background:var(--edu-surface);border:1px solid var(--edu-line);border-radius:18px;padding:20px;box-shadow:0 8px 25px rgba(24,62,93,.05)}.panel-head{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-bottom:14px}.panel-head h2,.panel-head h3{margin:0}.panel-head p{margin:5px 0 0;color:var(--edu-muted);font-size:13px}.panel-head input{max-width:260px;border:1px solid var(--edu-line);border-radius:10px;padding:10px;background:var(--edu-surface);color:var(--edu-text)}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.form-grid label{display:grid;gap:6px;font-size:12px;font-weight:800;color:var(--edu-muted)}.form-grid input,.form-grid select,.form-grid textarea,.schedule-row input,.schedule-row select{width:100%;border:1px solid var(--edu-line);border-radius:9px;padding:10px;background:var(--edu-surface);color:var(--edu-text);font:inherit}.form-grid .span2{grid-column:1/-1}.form-grid .check{display:flex;align-items:center;gap:8px;color:var(--edu-text)}.form-grid .check input{width:auto}.form-actions{display:flex;align-items:center;gap:12px}.table-scroll{overflow:auto}table{width:100%;border-collapse:collapse;min-width:730px}table.wide{min-width:1250px}th,td{padding:11px 10px;border-bottom:1px solid var(--edu-line);text-align:left;font-size:13px;vertical-align:top}th{font-size:11px;color:var(--edu-muted);background:color-mix(in srgb,var(--edu-surface) 80%,var(--edu-bg))}td b,td small{display:block}td small{color:var(--edu-muted);margin-top:4px}.row-buttons{display:flex;gap:5px;flex-wrap:wrap}.row-buttons button{border:1px solid var(--edu-line);background:var(--edu-surface);color:var(--edu-text);border-radius:7px;padding:6px 8px;font-size:11px;font-weight:800}.pill{display:inline-flex;border-radius:999px;padding:5px 8px;background:#e9f3fb;color:#17679f;font-size:11px;font-weight:800}.schedule-editor{margin-top:22px;padding-top:18px;border-top:1px solid var(--edu-line)}.hidden{display:none!important}.schedule-row{display:grid;grid-template-columns:1fr 1fr 1.4fr 1fr auto;gap:8px;margin-bottom:8px}.schedule-row button{border:1px solid #f0b8b8;background:#fff;color:#b22;border-radius:8px}.mini-page{padding-top:12px;color:var(--edu-muted);font-size:12px}@media(max-width:1100px){.edu-grid.two{grid-template-columns:1fr}.edu-metrics{grid-template-columns:1fr 1fr}}@media(max-width:650px){.edu-shell{padding:14px}.edu-hero{padding:22px;align-items:flex-start;flex-direction:column}.edu-metrics{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}.form-grid .span2{grid-column:auto}.schedule-row{grid-template-columns:1fr}.edu-topbar{padding:0 14px}.edu-topbar span{display:none}}

/* V21 education workspace */
.edu-shell,.edu-tab,.panel{min-width:0}.edu-shell{padding-bottom:120px}.edu-grid.two{grid-template-columns:minmax(0,.9fr) minmax(0,1.3fr)}.form-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.form-grid input,.form-grid select,.form-grid textarea{min-width:0}.publication-help{padding:13px 15px;border-radius:10px;background:var(--edu-bg);line-height:1.6;color:var(--edu-text);font-size:13px}.form-actions{flex-wrap:wrap;grid-column:1/-1}.form-actions span{line-height:1.5}.edu-topbar{height:auto;min-height:64px;gap:15px;padding-top:12px;padding-bottom:12px}.edu-topbar div{flex-wrap:wrap}.edu-topbar>div:last-child{justify-content:flex-end}
@media(max-width:1180px){.edu-grid.two{grid-template-columns:1fr}}@media(max-width:650px){.edu-topbar{align-items:flex-start;flex-direction:column}.edu-topbar>div:last-child{justify-content:flex-start}.form-grid{grid-template-columns:1fr}.panel-head{flex-wrap:wrap}.panel-head input{min-width:0;max-width:100%}.schedule-row{grid-template-columns:1fr}.edu-shell .theme-control{position:static}}

.edu-status{color:var(--edu-muted);line-height:1.65;overflow-wrap:anywhere}.edu-status:empty{display:none}.mini-page{display:flex;align-items:center;justify-content:center;gap:14px}.mini-page button{border:1px solid var(--edu-line);border-radius:8px;background:var(--edu-surface);color:var(--edu-text);padding:8px 13px}button:disabled{opacity:.45;cursor:not-allowed}#education-dialog{width:min(640px,calc(100vw - 28px));max-height:85vh;overflow:auto;border:1px solid var(--edu-line);border-radius:18px;padding:24px;background:var(--edu-surface);color:var(--edu-text);box-shadow:0 24px 80px #0004}#education-dialog::backdrop{background:#071b3099}#education-dialog .panel-head h2{font-size:21px}#education-dialog .form-grid{margin:20px 0}#education-dialog p{line-height:1.7}.assignment-list{display:grid;gap:12px;padding:16px 0}.assignment-list label{display:flex;align-items:center;gap:8px}.assignment-list input{width:auto}.record-list{max-height:180px;overflow:auto;padding-left:20px;font-size:13px;line-height:2}.edu-tabs{flex-wrap:wrap;overflow:visible}.edu-metrics article{min-width:0}.schedule-row input,.schedule-row select{min-width:0}
@media(max-width:650px){.edu-metrics{grid-template-columns:repeat(2,minmax(0,1fr))}.edu-metrics article{padding:12px}.edu-metrics b{font-size:21px}.edu-tabs button{font-size:12px;padding:9px 11px}.edu-topbar b{font-size:15px}#education-dialog{padding:18px}.edu-tabs{gap:7px}}

button,input,select,textarea{font-family:inherit}

/* V22 course material editor */
.material-editor{margin-top:22px;scroll-margin-top:90px}.material-layout{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:24px}.material-library{min-width:0}.material-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}.material-list li{padding:16px;border:1px solid var(--edu-line);border-radius:12px;background:var(--edu-bg);display:flex;justify-content:space-between;align-items:flex-start;gap:12px;overflow-wrap:anywhere}.material-list li>div{min-width:0}.material-list b{display:block}.material-meta{display:block;margin-top:8px;color:var(--edu-muted);font-size:12px}.material-list p{font-size:13px;line-height:1.7;white-space:pre-wrap}.material-list .row-buttons{flex:none}.material-list a,.material-editor .publication-help a{color:var(--edu-primary);font-weight:700}.material-link{display:inline-block;margin-top:10px;font-size:13px}.material-actions{display:flex;flex-direction:column;align-items:flex-start;gap:8px}.material-actions .primary{min-width:150px}.material-actions p{margin:0}.material-editor .is-error{color:#b22e32}.material-editor label small{font-weight:400;line-height:1.6}.material-editor [hidden]{display:none!important}.material-empty{line-height:1.7;color:var(--edu-muted)}html[data-theme=dark] .material-editor .is-error{color:#ffa8a8}@media(max-width:1000px){.material-layout{grid-template-columns:1fr}.material-list{max-height:320px;overflow:auto}}@media(max-width:480px){.material-list li{flex-direction:column}.material-actions{align-items:stretch}.material-editor .panel-head h3{font-size:16px}}