/* Class owns its presentation. The common account, Book and activity UIs keep theirs. */
html[data-classrooms-page]{--lc-font:var(--ml-font);--lc-ink:#252633;--lc-muted:#737889;--lc-purple:#6654ed;--lc-line:#e8eaf1;--lc-soft:#f6f7fb;--lc-mint:#31c5a1;--lc-blue:#438fee}
html[data-classrooms-page] body{font:var(--ml-type-body);color:var(--lc-ink)}
html[data-classrooms-page] .platform-header .header-actions{visibility:hidden}
html[data-classrooms-page][data-classroom-actor=teacher] .platform-header .header-actions{visibility:visible}
html[data-classrooms-page]:not([data-classroom-actor=teacher]) .platform-sidebar,
html[data-classrooms-page]:not([data-classroom-actor=teacher]) .sidebar-secondary{display:none}
html[data-classroom-actor=student] body>.platform-header,
html[data-classroom-actor=student] body>footer{display:none}
html[data-classroom-actor=student] .platform-layout{grid-template-columns:minmax(0,1fr)}
html[data-classrooms-page] .platform-content{padding:28px 32px 60px;max-width:1344px}
[data-land-classes]{scroll-margin-top:80px}
.lc-workspace,.lc-state,.lc-login,.lc-dialog,.lc-student-header{font:var(--ml-type-body);font-synthesis:none}
.lc-workspace button,.lc-workspace input,.lc-workspace select,.lc-login button,.lc-login input,.lc-dialog button,.lc-dialog input,.lc-dialog textarea,.lc-student-header button{font-family:inherit}
.lc-icon{display:block;flex:none;width:20px;height:20px;fill:currentColor;stroke:none}
.lc-artwork{display:block;flex:none;object-fit:contain}
.lc-workspace h1,.lc-state h1,.lc-login h1{margin:0;font:var(--ml-type-title);letter-spacing:-.035em;overflow-wrap:anywhere}
.lc-page-heading>h1{font:var(--ml-type-page)}
.lc-workspace h2{margin:0;font:var(--ml-type-section);overflow-wrap:anywhere}
.lc-page-heading{display:flex;align-items:center;gap:14px;min-height:48px;margin-bottom:22px}
.lc-page-heading.compact{margin-bottom:16px}
.lc-actions{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:12px}
.lc-button,.lc-link{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 16px;border:1px solid transparent;border-radius:12px;font:var(--ml-type-control);text-decoration:none;cursor:pointer;white-space:nowrap}
.lc-button.primary,.lc-link{background:var(--lc-purple);color:#fff}
.lc-button.secondary{background:#fff;border-color:#dde0e9;color:#565d70}
.lc-button.primary:hover,.lc-link:hover{background:#5946df}
.lc-button.secondary:hover{background:var(--lc-soft);border-color:#c9cddd}
.lc-button:disabled{opacity:.5;cursor:wait}
.lc-student-learning .lc-button[aria-disabled="true"]{opacity:.5;cursor:wait}
.lc-icon-button{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;padding:12px;border:0;border-radius:12px;background:transparent;color:var(--lc-muted);cursor:pointer;list-style:none}
.lc-icon-button::-webkit-details-marker{display:none}
.lc-icon-button:hover{background:#f1f2f7;color:var(--lc-ink)}
.lc-workspace :is(button,a,input,select,summary):focus-visible,.lc-dialog :is(button,input,textarea):focus-visible,.lc-login :is(button,input):focus-visible,.lc-student-header :is(button,a):focus-visible{outline:3px solid #a59afa;outline-offset:3px}
.lc-toolbar{display:flex;align-items:center;flex-wrap:wrap;gap:14px;margin-bottom:22px;min-height:44px}
.lc-search{flex:1;max-width:360px;margin-right:auto;min-width:130px}
.lc-search-field{position:relative;display:flex!important;align-items:center;margin:0!important}
.lc-search-field>.lc-icon{position:absolute;left:14px;color:#8b90a0;pointer-events:none}
.lc-search-field>.lc-icon~.lc-input{padding-left:43px}
.lc-search-field>.lc-input:focus-visible{outline-offset:2px}
.lc-input{display:block;width:100%;min-height:44px;padding:11px 13px;border:1px solid #dfe2eb;border-radius:12px;background:#fff;color:var(--lc-ink);font:var(--ml-type-body);box-shadow:none}
.lc-input::placeholder{color:#9297a7}
.lc-input:disabled{background:#f7f8fb}
.lc-count{flex:none;color:var(--lc-muted);font-size:13px;white-space:nowrap}
.lc-sort{display:flex;align-items:center;gap:5px;flex:none;color:#626a7c}
.lc-sort>.lc-icon{width:18px;height:18px}
.lc-sort select{min-height:44px;border:0;border-radius:8px;background:transparent;color:inherit;font:var(--ml-type-control);cursor:pointer;padding:4px}
.lc-class-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;max-width:980px}
.lc-create-card{position:relative;isolation:isolate;display:grid;place-items:center;min-height:210px;width:100%;padding:24px;border:1px solid #dedff4;border-radius:20px;overflow:hidden;background:#f8f9ff;color:#5445b4;font:var(--ml-type-control-lg);cursor:pointer}
.lc-create-card::before{content:"";position:absolute;inset:0;background:linear-gradient(115deg,#405fc7,#6952d9);opacity:0;transition:opacity .15s}
.lc-create-card>.lc-artwork{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.24;pointer-events:none;transition:opacity .15s}
.lc-create-copy{position:relative;display:flex;flex-direction:column;align-items:center;gap:14px;pointer-events:none}
.lc-create-copy>.lc-icon{width:32px;height:32px}
.lc-create-card:is(:hover,:focus-visible){border-color:#6654ed;color:#fff}
.lc-create-card:is(:hover,:focus-visible)::before{opacity:1}
.lc-create-card:is(:hover,:focus-visible)>.lc-artwork{opacity:.32}
.lc-student-empty{display:flex;flex-direction:column;align-items:center;gap:18px;padding:28px 16px 40px}
.lc-student-empty>.lc-artwork{width:192px;height:231px;max-width:100%}
.lc-student-empty>.lc-empty{margin:0;color:#565d70;font:var(--ml-type-body)}
.lc-class-card{position:relative;border:1px solid var(--lc-line);border-radius:20px;background:#fff;min-width:0;box-shadow:0 2px 8px #1c255404}
.lc-class-entry{display:flex;flex-direction:column;align-items:flex-start;gap:16px;min-height:210px;padding:24px;color:var(--lc-ink);text-decoration:none;border-radius:20px}
.lc-class-card:hover{border-color:#c7c1f3;box-shadow:0 6px 20px #3943660b}
.lc-class-mark{display:grid;place-items:center;width:56px;height:56px}
.lc-class-entry h2{padding-right:8px;font:var(--ml-type-card)}
.lc-card-meta{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--lc-muted);margin-top:auto}
.lc-card-meta>.lc-icon{width:17px;height:17px;color:var(--lc-blue)}
.lc-row-menu{position:relative;margin-left:auto;width:max-content}
.lc-class-card>.lc-row-menu{position:absolute;right:12px;top:14px}
.lc-menu-panel{position:fixed;right:auto;z-index:80;width:168px;padding:5px;border:1px solid var(--lc-line);border-radius:12px;background:#fff;box-shadow:0 8px 24px #1f2e5718;animation:lc-enter .15s ease-out}
.lc-menu-panel>.lc-button{width:100%;border:0;justify-content:flex-start;background:transparent;padding:10px}
.lc-back{margin-bottom:16px;padding-left:0;border-color:transparent!important;color:#767d8d!important}
.lc-summary-band{padding:16px;border-radius:24px;background:linear-gradient(120deg,#fff1a7,#fff8dc 62%,#eaf9f4);margin-bottom:24px}
.lc-summary{display:grid;grid-template-columns:56px minmax(0,1fr) auto;align-items:center;gap:16px;min-height:96px;padding:18px 20px;border:1px solid #ffffffd9;border-radius:20px;background:#fff;box-shadow:0 2px 4px #3d40460a}
.lc-summary-mark{display:grid;place-items:center;width:56px;height:56px}
.lc-summary-identity{min-width:0}
.lc-summary-caption{margin:7px 0 0;color:var(--lc-muted);font-size:14px}
.lc-detail-heading{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:18px}
.lc-detail-tabs{display:flex;gap:28px;margin-bottom:22px;border-bottom:1px solid var(--lc-line)}
.lc-roster-controls{display:flex;align-items:center;flex-wrap:wrap;gap:18px 24px;min-width:0;margin-bottom:22px;border-bottom:1px solid var(--lc-line)}
.lc-roster-controls>.lc-detail-tabs{flex:none;align-self:stretch;margin:0;border:0}
.lc-roster-controls>.lc-toolbar{flex:1 1 460px;min-width:0;margin:0}
.lc-tab{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:8px 4px 12px;border-bottom:3px solid transparent;color:#737a8c;text-decoration:none;font:var(--ml-type-control-lg);transition:color .15s,border-color .15s}
.lc-tab .lc-icon{width:19px;height:19px}
.lc-tab:hover{color:var(--lc-purple)}
.lc-tab[aria-current=page]{color:var(--lc-purple);border-bottom-color:var(--lc-purple)}
.lc-quiz-toolbar{display:flex;justify-content:flex-end;flex-wrap:wrap;gap:10px;margin-bottom:22px}
.lc-connection-list{display:grid;gap:12px;max-width:1100px}
.lc-connection-row{display:grid;grid-template-columns:48px minmax(0,1fr) auto auto;align-items:center;gap:16px;padding:18px 20px;border:1px solid var(--lc-line);border-radius:20px;background:#fff;box-shadow:0 2px 8px #1c255404}
.lc-quiz-mark{display:grid;place-items:center;width:48px;height:48px}
.lc-quiz-copy{min-width:0;flex:1}
.lc-quiz-copy h2{margin:5px 0 0;font:var(--ml-type-card);overflow-wrap:anywhere}
.lc-quiz-title{color:inherit;text-decoration:none}
.lc-quiz-title:hover{color:var(--lc-purple);text-decoration:underline}
.lc-connection-row>.lc-button{min-width:112px}
.lc-connection-row>.lc-row-menu{position:relative;top:auto;right:auto}
.lc-session-status{padding:5px 10px;border-radius:99px;background:#f0f2f7;color:#757c8e;font-size:11px}
.lc-session-status.open{background:#e7f8f2;color:#16866b}
.lc-session-status.waiting{background:#edf4ff;color:#377acc}
.lc-quiz-meta{margin:0;color:var(--lc-muted);font-size:12px;line-height:1.5}
.lc-picker-dialog{width:min(620px,calc(100vw - 32px))}
.lc-quiz-picker{display:grid;gap:12px;min-height:96px}
.lc-picker-row{display:flex;align-items:center;gap:20px;padding:17px 18px;border:1px solid var(--lc-line);border-radius:16px;background:#fafbfe}
.lc-picker-row>.lc-artwork{width:40px;height:40px}
.lc-picker-row .lc-quiz-copy h2{font-size:16px}
.lc-quiz-picker>.lc-button{justify-self:center}
.lc-sessions-dialog{width:min(780px,calc(100vw - 32px))}
.lc-session-list{display:grid;gap:12px}
.lc-session-row{display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding:18px;border:1px solid var(--lc-line);border-radius:16px;background:#fafbfe}
.lc-session-copy{flex:1;min-width:160px}
.lc-session-copy h3{margin:0 0 5px;font:var(--ml-type-card);overflow-wrap:anywhere}
.lc-session-actions{display:flex;gap:8px;flex-wrap:wrap}
.lc-session-actions>.lc-button{min-height:44px;padding:8px 12px}
.lc-confirm-copy{margin:0;font:var(--ml-type-body);word-break:keep-all}
.lc-student-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;max-width:1100px}
.lc-student-card{position:relative;min-height:202px;padding:22px 20px;border:1px solid var(--lc-line);border-radius:20px;background:#fff;box-shadow:0 2px 8px #1c255404}
.lc-student-mark{display:grid;place-items:center;min-height:96px}
.lc-student-card h2{margin-top:10px;font-size:18px}
a.lc-student-card{display:block;color:inherit;text-decoration:none;transition:border-color .16s,box-shadow .16s}
a.lc-student-card:hover{border-color:#b6b1eb;box-shadow:0 4px 16px #1c25540b}
a.lc-student-card:focus-visible{outline:3px solid #a59afa;outline-offset:3px}
.lc-student-learning{max-width:1100px}
.lc-student-learning>.lc-back{display:inline-flex;align-items:center;gap:8px;min-height:44px;background:transparent;text-decoration:none;color:var(--lc-muted)}
.lc-learning-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:12px 0 16px}
.lc-learning-heading h2{margin:0;font:var(--ml-type-section)}
.lc-learning-table-wrap{max-width:100%}
.lc-learning-table-wrap:focus-visible{outline:3px solid #a59afa;outline-offset:3px}
.lc-learning-table{width:100%;min-width:640px;border-collapse:collapse;text-align:left;font:var(--ml-type-body)}
.lc-learning-table th,.lc-learning-table td{padding:18px 20px;border-bottom:1px solid var(--lc-line);vertical-align:middle}
.lc-learning-table thead th{background:#f8f9fc;color:#72798a;font:var(--ml-type-label)}
.lc-learning-table th:first-child{width:40%}
.lc-learning-table tbody th{font-weight:600}
.lc-learning-table tbody tr:last-child>*{border-bottom:0}
.lc-learning-title,.lc-learning-date,.lc-learning-progress,.lc-learning-count{display:block}
.lc-learning-title{overflow-wrap:anywhere;line-height:1.5}
.lc-learning-date,.lc-learning-count{margin-top:6px;color:var(--lc-muted);font-size:13px;font-weight:400}
.lc-learning-lesson-state,.lc-learning-score{white-space:nowrap}
.lc-learning-progress.complete{color:#227b64;font-weight:600}
.lc-learning-progress.pending{color:#986f1a}
.lc-learning-table .lc-button{min-height:44px;padding:8px 16px;white-space:nowrap}
.lc-learning-empty-record{color:var(--lc-muted)}
.lc-learning-section>[data-student-history-more]{display:flex;margin:20px auto 0}
.lc-learning-unavailable{color:var(--lc-muted);margin-top:16px}
.lc-table-wrap{position:relative;overflow-x:auto;border:1px solid var(--lc-line);border-radius:18px;background:#fff}
.lc-table{width:100%;min-width:480px;border-collapse:collapse;table-layout:fixed;text-align:left}
.lc-table th{height:50px;padding:14px 20px;background:#f8f9fc;color:#72798a;font-weight:500;font-size:13px;border-bottom:1px solid var(--lc-line)}
.lc-table th:first-child{width:52%}.lc-table th:last-child{width:65px}
.lc-table td{height:68px;padding:10px 20px;border-bottom:1px solid var(--lc-line);vertical-align:middle}
.lc-table tr:last-child td{border-bottom:0}
.lc-inline-name{width:100%;max-width:230px;min-height:44px;padding:9px 10px;margin-left:-10px;border:1px solid transparent;border-radius:10px;background:transparent;color:var(--lc-ink);font-size:14px}
.lc-inline-name:hover{border-color:#e1e4ed}
.lc-inline-name:focus{border-color:#a398f0;background:#fff;outline:3px solid #e9e5ff!important;outline-offset:0!important}
.lc-inline-name:disabled{color:#8c91a0}
.lc-table td>.lc-button{min-height:44px;padding:7px 11px;font-size:12px!important;border-color:#e7e9f0}
.lc-empty{margin:38px 0;color:var(--lc-muted);text-align:center;font-size:14px}
.lc-workspace>.lc-button:last-child{display:flex;margin:26px auto 0}
.lc-state,.lc-login{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:450px;gap:18px;text-align:center;padding:32px 12px}
.lc-state>p{margin:0;color:var(--lc-muted);font-size:14px;line-height:1.7;word-break:keep-all}
.lc-login{width:min(100%,420px);margin:auto}
.lc-login-form{width:100%;text-align:left;margin-top:8px}
.lc-login-form>.lc-button{width:100%;margin-top:22px;min-height:48px}
.lc-field{display:grid;gap:10px;margin:0;font-size:14px}
.lc-field-label{color:#626b7e}
.lc-field-counter{float:right;margin-left:12px;color:#9399a8;font-size:12px}
.lc-field-error{margin:0;padding:10px 0 0;font-size:13px;line-height:1.6;color:#d34c5e;word-break:keep-all}
.lc-message{margin:0 0 18px;padding:12px 15px;border-radius:12px;background:#eaf9f4;color:#227361;font-size:13px;line-height:1.5}
.lc-message.error{background:#fff0f2;color:#c74659}
.lc-dialog{width:min(440px,calc(100vw - 32px));max-height:calc(100dvh - 32px);margin:auto;padding:0;border:0;border-radius:24px;background:#fff;color:var(--lc-ink);box-shadow:0 24px 90px #1c21402e;overflow-y:auto;animation:lc-enter .15s ease-out}
.lc-dialog::backdrop{background:#242b4547}
.lc-dialog-form{padding:24px}
.lc-dialog-header{display:flex;align-items:center;gap:14px;margin-bottom:24px}
.lc-dialog-header h2{flex:1;margin:0;font:var(--ml-type-section);letter-spacing:-.03em}
.lc-dialog-body{display:grid;gap:16px}
.lc-dialog-footer{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:10px;margin-top:24px}
.lc-dialog-footer[hidden]{display:none}
.lc-dialog-footer>.lc-button{min-height:44px}
.lc-dialog-footer>.lc-button.primary{min-height:48px}
.lc-code-name{margin:0;text-align:center;font-size:16px}
.lc-code{display:block;width:100%;padding:22px 12px;border:1px solid #ddd8fa;border-radius:16px;background:#f8f6ff;color:var(--lc-purple);font-family:var(--lc-font);font-size:30px;font-weight:700;text-align:center;letter-spacing:.13em;overflow-wrap:anywhere}
.lc-code-help{margin:0;color:var(--lc-muted);font-size:13px;line-height:1.7;text-align:center;word-break:keep-all}
.lc-batch-dialog{width:min(620px,calc(100vw - 32px))}
.lc-quantity-dialog{width:min(440px,calc(100vw - 32px))}
.lc-quantity-dialog .lc-dialog-header h2{display:flex;align-items:center;gap:12px}
.lc-quantity-art{display:block;flex:none;width:48px;height:48px;object-fit:contain}
.lc-quantity-field{display:grid;gap:14px;justify-items:center;min-width:0;margin:4px 0 8px}
.lc-quantity-control{display:grid;grid-template-columns:48px minmax(80px,120px) 48px;align-items:center;gap:14px;width:max-content;max-width:100%}
.lc-quantity-control>.lc-quantity-step{display:grid;place-items:center;min-width:48px;min-height:48px;padding:0;border:1px solid #d8e6e2;border-radius:50%;background:#edf9f5;color:#26856e;font-size:25px!important;line-height:1;cursor:pointer}
.lc-quantity-step:hover:not(:disabled){border-color:#a3daca;background:#e0f4ed}
.lc-quantity-step:disabled{opacity:.4;cursor:default}
.lc-quantity-input{box-sizing:border-box;min-height:64px;padding:8px;border-color:#dddff0;border-radius:16px;background:#fafaff;color:#4449a8;font-size:32px!important;line-height:1.4;font-weight:700!important;text-align:center;font-variant-numeric:tabular-nums;appearance:textfield}
.lc-quantity-input::-webkit-inner-spin-button,.lc-quantity-input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}
.lc-quantity-input[aria-invalid=true]{border-color:#da8998;background:#fff8fa}
.lc-quantity-input[readonly]{background:#f6f7fb;color:#71778a}
.lc-quantity-alternative.lc-button{justify-self:center;min-height:44px;margin:0;padding:9px 12px;border:0;background:transparent;color:#5a63a2;font-size:13px!important;text-decoration:underline;text-underline-offset:4px}
.lc-quantity-alternative[hidden]{display:none}
.lc-login-methods{display:flex;justify-content:center;margin-top:18px;padding-top:16px;border-top:1px solid #e4e8f0}
.lc-login-methods>.lc-button{min-height:44px;border-color:#cce9e1;background:#edf9f5;color:#21745f;font-size:14px!important}
.lc-scanner-dialog{width:min(440px,calc(100vw - 32px))}
.lc-student-scanner{display:grid;gap:16px;min-width:0}
.lc-scanner-stage{display:grid;place-items:center;aspect-ratio:4/3;min-width:0;overflow:hidden;border:1px solid #d9eee6;border-radius:20px;background:linear-gradient(145deg,#effaf6,#f5f7ff)}
.lc-scanner-artwork{display:block;width:64px;height:64px;object-fit:contain}
.lc-scanner-video{display:block;width:100%;height:100%;min-height:0;object-fit:contain;background:#182735}
.lc-scanner-artwork[hidden],.lc-scanner-video[hidden]{display:none}
.lc-scanner-status{margin:0;color:#667489;font-size:14px;line-height:1.65;text-align:center;word-break:keep-all}
.lc-scanner-controls{display:flex;justify-content:center;gap:10px;flex-wrap:wrap}
.lc-scanner-controls>.lc-button{min-height:44px;min-width:144px}
.lc-scanner-dialog .lc-dialog-footer{justify-content:center}
.lc-scanner-dialog .lc-dialog-footer>.lc-button{width:100%;min-height:44px}
.lc-materials{min-width:0}
.lc-material-toolbar{display:flex;align-items:center;gap:12px;min-height:44px;margin-bottom:22px}
.lc-material-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;max-width:1100px}
.lc-material-add{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;width:100%;min-height:190px;padding:24px;border:1.5px dashed #cbd8eb;border-radius:20px;background:#f5f8ff;color:#4f619a;font:var(--ml-type-control-lg);cursor:pointer}
.lc-material-artwork{display:block;flex:none;object-fit:contain}
.lc-material-add:hover{border-color:#90afe6;background:#edf4ff}
.lc-material-card{position:relative;min-width:0;border:1px solid var(--lc-line);border-radius:20px;background:#fff;box-shadow:0 2px 8px #1c255404}
.lc-material-card:hover{border-color:#c7d7ef;box-shadow:0 6px 20px #3943660b}
.lc-material-entry{display:flex;flex-direction:column;align-items:flex-start;gap:18px;width:100%;min-height:190px;height:100%;padding:24px 52px 24px 24px;border:0;border-radius:20px;background:transparent;color:var(--lc-ink);font:var(--ml-type-card);text-align:left;overflow-wrap:anywhere;cursor:pointer}
.lc-material-card>.lc-row-menu{position:absolute;right:12px;top:12px}
.lc-material-link-count{display:block;margin-top:auto;padding:6px 10px;border-radius:9px;background:#f0f4fb;color:#5f6e86;font-size:12px;line-height:1.4;font-weight:500;white-space:nowrap}
/* Material content scrolls within the dialog; title and actions remain visible. */
.lc-material-editor-dialog,.lc-material-detail-dialog{width:min(1200px,calc(100vw - 32px));overflow:hidden}
:is(.lc-material-editor-dialog,.lc-material-detail-dialog) .lc-dialog-form{display:flex;flex-direction:column;max-height:calc(100dvh - 32px);box-sizing:border-box}
:is(.lc-material-editor-dialog,.lc-material-detail-dialog) .lc-dialog-body{min-height:0;overflow:auto;overscroll-behavior:contain;scrollbar-gutter:stable}
:is(.lc-material-editor-dialog,.lc-material-detail-dialog) .lc-dialog-header{flex:none;margin-bottom:20px}
:is(.lc-material-editor-dialog,.lc-material-detail-dialog) .lc-dialog-footer{flex:none}
.lc-material-editor{display:grid;grid-template-columns:280px minmax(0,1fr);gap:24px;min-width:0;min-height:400px}
.lc-material-editor-main{display:flex;flex-direction:column;gap:20px;min-width:0}
.lc-material-editor-attachments{display:grid;align-content:start;gap:20px;min-width:0}
.lc-material-editor-main>.lc-field:last-child{flex:1}
.lc-material-description{box-sizing:border-box;min-height:240px;resize:vertical;line-height:1.7}
.lc-field-count{justify-self:end;margin-top:-4px;color:#6b7385;font-size:12px;line-height:1.5;font-variant-numeric:tabular-nums}
.lc-material-attachments{display:flex;flex-direction:column;gap:16px;min-width:0;align-self:start}
.lc-material-attachment-row{min-width:0}
.lc-material-link-row{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:10px}
.lc-material-link-row>.lc-field{min-width:0}
.lc-material-link-row .lc-input{box-sizing:border-box}
.lc-material-link-row>.lc-button{min-height:44px;padding-inline:12px}
.lc-material-file-row{display:flex;align-items:center;flex-wrap:wrap;gap:12px;padding:16px;border:1px solid #dbe3ef;border-radius:16px;background:#f6f8fc}
.lc-material-file-copy{flex:1;min-width:100px;display:grid;gap:5px}
.lc-material-file-name{margin:0;color:#28334b;font-size:14px;font-weight:700;line-height:1.5;overflow-wrap:anywhere}
.lc-material-file-status{margin:0;color:#61708a;font-size:13px;line-height:1.6;overflow-wrap:anywhere}
.lc-material-file-row>.lc-button{min-height:44px;padding-inline:12px}
.lc-material-file-row>.lc-button[hidden]{display:none}
.lc-material-attach-actions{display:flex;flex-wrap:wrap;gap:10px;align-self:start;justify-self:start}
.lc-material-attach-actions>.lc-button[hidden]{display:none}
.lc-material-detail{display:grid;grid-template-columns:280px minmax(0,1fr);align-items:start;gap:24px;min-width:0}
.lc-material-detail-main{min-width:0;display:grid;gap:16px}
.lc-material-detail-main h3{margin:0;font-size:18px;font-weight:700;line-height:1.5;overflow-wrap:anywhere}
.lc-material-description-copy{margin:0;color:#5c6679;font:var(--ml-type-body);white-space:pre-wrap;overflow-wrap:anywhere}
.lc-material-preview-pane{min-width:0;overflow:hidden;border:1px solid #e0e6f0;border-radius:18px;background:#f5f7fb}
.lc-material-preview-pane>.lc-material-file-name{padding:16px 20px;border-bottom:1px solid #e4e8f0;background:#fff}
.lc-material-preview-content{display:grid;gap:16px;min-width:0;min-height:360px;padding:20px;box-sizing:border-box;align-content:start}
.lc-material-preview-content[hidden]{display:none}
.lc-material-text-preview{margin:0;padding:20px;max-height:420px;overflow:auto;border-radius:12px;background:#fff;color:#39465c;font:var(--ml-type-body);white-space:pre-wrap;overflow-wrap:anywhere}
.lc-material-image-preview{display:block;max-width:100%;max-height:460px;margin:auto;object-fit:contain}
.lc-material-pdf-preview{width:100%;height:min(460px,60dvh);border:0;border-radius:12px;background:#fff}
.lc-material-media-preview{width:100%;max-height:460px}
.lc-material-address,.lc-material-preview-fallback{margin:0;color:#61708a;font-size:14px;line-height:1.7;overflow-wrap:anywhere}
.lc-material-navigation{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 20px;border-top:1px solid #e0e6f0;background:#fff}
.lc-material-navigation>.lc-button{min-height:44px}
.lc-material-position{color:#62708a;font-size:13px;font-variant-numeric:tabular-nums}
.lc-material-detail-actions{grid-column:1 / -1;display:flex;justify-content:flex-end;gap:10px;flex-wrap:wrap}
.lc-material-detail-actions>.lc-button{min-height:48px}
.lc-material-detail-actions>.primary{min-width:180px}
.lc-material-detail-actions>[hidden],.lc-material-navigation[hidden]{display:none}
.lc-material-detail a:focus-visible{outline:3px solid #a59afa;outline-offset:3px}
.lc-material-delete-title{margin:0;padding:14px 16px;border:1px solid #ede2e5;border-radius:14px;background:#fff6f7;color:#754c59;font-size:15px;font-weight:700;line-height:1.6;overflow-wrap:anywhere}
@media(max-width:1000px){.lc-material-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.lc-material-editor,.lc-material-detail{grid-template-columns:240px minmax(0,1fr);gap:20px}}
@media(max-width:760px){.lc-material-grid{grid-template-columns:minmax(0,1fr)}.lc-material-add,.lc-material-entry{min-height:160px}.lc-material-editor,.lc-material-detail{grid-template-columns:minmax(0,1fr);gap:20px}.lc-material-editor{min-height:0}.lc-material-attach-actions{grid-column:1}.lc-material-description{min-height:120px}.lc-material-preview-content{min-height:240px;padding:16px}.lc-material-detail-actions{grid-column:1}.lc-material-detail-actions>.primary{flex:1;min-width:140px}.lc-material-file-row{padding:14px}.lc-material-text-preview{padding:16px}}
.lc-batch-input{box-sizing:border-box;min-height:156px;resize:vertical;font-family:var(--lc-font);line-height:1.7}
.lc-batch-review-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:44px}
.lc-batch-review{display:grid;gap:10px;max-height:280px;overflow-y:auto;overscroll-behavior:contain;margin:0;padding:4px 6px;list-style:none}
.lc-batch-row{display:grid;grid-template-columns:28px minmax(0,1fr);gap:8px;align-items:center}
.lc-batch-number{color:#8b91a1;text-align:center;font-size:13px;font-variant-numeric:tabular-nums}
.lc-batch-row>.lc-field{min-width:0;gap:0}
.lc-batch-row .lc-input{box-sizing:border-box}
.lc-batch-row .lc-input[readonly]{background:#f7f8fb;color:#626a7b}
.lc-batch-row .lc-input[aria-invalid=true]{border-color:#da8998;background:#fff8fa}
.lc-batch-row-error{grid-column:2;padding-top:0}
.lc-student-code-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;max-height:min(560px,58dvh);overflow-y:auto;overscroll-behavior:contain;margin:0;padding:4px;list-style:none}
.lc-student-code-card{display:grid;justify-items:center;gap:16px;min-width:0;padding:20px;border:1px solid #dcebe8;border-radius:20px;background:linear-gradient(140deg,#f0fbf8,#fff 48%,#f6f8ff);color:var(--lc-ink);box-sizing:border-box}
.lc-code-card-heading{display:flex;align-items:center;justify-content:center;gap:12px;width:100%;min-width:0}
.lc-code-card-copy{min-width:0;flex:1}
.lc-student-code-card .lc-code-name{margin:0;font-weight:700;text-align:center;line-height:1.45;overflow-wrap:anywhere}
.lc-student-code-card .lc-code{box-sizing:border-box;padding:10px 8px;border-color:#dadcf6;border-radius:10px;background:#fff;color:#4d4daf;font-size:21px;line-height:1.5;letter-spacing:.06em;font-variant-numeric:tabular-nums}
.lc-code-card-qr{display:grid;place-items:center;width:144px;height:144px;background:#fff;color:#000;font-size:12px;text-align:center;border-radius:0}
.lc-code-card-qr>svg{display:block;width:100%;height:100%;fill:#000;shape-rendering:crispEdges}
.lc-code-card-address{margin:0;max-width:100%;font-size:11px;line-height:1.6;color:#616b7a;text-align:center;overflow-wrap:anywhere}
.lc-code-copy-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;width:100%}
.lc-code-copy-actions>.lc-button{flex:1;min-height:44px;padding:8px 12px;font-size:13px!important}
.lc-code-card-actions{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:10px}
.lc-code-card-actions>[hidden]{display:none}
.lc-code-pages{display:flex;align-items:center;gap:8px;margin-right:auto}
.lc-code-page-label{min-width:44px;text-align:center;color:var(--lc-muted);font-size:13px;font-variant-numeric:tabular-nums}
[data-student-code-print]{display:none}
@media(max-width:600px){.lc-batch-review{max-height:min(280px,45dvh)}.lc-student-code-cards{grid-template-columns:minmax(0,1fr);max-height:58dvh}.lc-student-code-card{padding:18px;gap:14px}}
@page{size:A4 portrait;margin:10mm}
@media print{
 html[data-classrooms-page][data-student-code-printing=true] body>*{display:none!important}
 html[data-student-code-printing=true] body>[data-student-code-print]{display:block!important;color:#000;background:#fff;font-family:var(--lc-font);font-synthesis:none}
 html[data-classrooms-page] .lc-dialog,html[data-classrooms-page] .lc-dialog::backdrop{display:none!important}
 .lc-student-code-print-page{break-after:page;page-break-after:always}
 .lc-student-code-print-page:last-child{break-after:auto;page-break-after:auto}
 .lc-code-print-heading{display:flex;align-items:center;gap:5mm;width:190mm;height:10mm;font-size:9pt}
 .lc-code-print-heading h2{flex:1;min-width:0;margin:0;font-size:10pt;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
 .lc-student-code-print-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-auto-rows:50mm;gap:3mm;width:190mm;margin:0;padding:0;list-style:none}
 .lc-student-code-print-grid>.lc-student-code-card{grid-template-rows:6mm 24mm 6mm 4mm;align-content:center;gap:.5mm;height:50mm;padding:3mm;border:.25mm dashed #777;border-radius:0;background:#fff;box-shadow:none;color:#000;break-inside:avoid;page-break-inside:avoid;overflow:hidden}
 .lc-student-code-print-grid .lc-code-card-heading{gap:0}
 .lc-student-code-print-grid .lc-code-name{margin:0 0 .5mm;font-size:9pt;line-height:1.15;color:#000}
 .lc-student-code-print-grid .lc-code{padding:0;border:0;border-radius:0;background:#fff;color:#000;font-size:13pt;line-height:1.15;text-align:center;letter-spacing:0}
 .lc-student-code-print-grid .lc-code-card-qr{width:24mm;height:24mm;border-radius:0}
 .lc-student-code-print-grid .lc-code-card-address{font-size:6pt;line-height:1.15;color:#000}
}
.lc-student-header{display:flex;align-items:center;gap:13px;height:64px;padding:0 28px;border-bottom:1px solid var(--lc-line);background:#fff}
.lc-student-header>a{display:flex;align-items:center;gap:12px;color:var(--lc-ink);font-size:16px;font-weight:700;text-decoration:none}
.lc-student-header img{width:30px;height:28px}
.lc-student-header img.lc-student-wordmark{width:auto;height:20px}
.lc-student-header>[data-class-student-name]{margin-left:auto;font-size:14px;color:#646c7d}
.lc-student-header .lc-button{min-height:44px;padding:7px 12px;font-size:12px!important}
.lc-button,.lc-link,.lc-icon-button,.lc-create-card,.lc-class-card{transition:background-color .15s,border-color .15s,box-shadow .15s,color .15s,transform .15s}
.lc-button:not(:disabled):active,.lc-icon-button:active,.lc-create-card:active{transform:scale(.98)}
@keyframes lc-enter{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:900px){html[data-classrooms-page] .platform-content{padding:24px}.lc-toolbar{gap:10px}}
@media(max-width:600px){html[data-classrooms-page] .platform-content{padding:20px 16px 40px}.lc-toolbar{flex-wrap:wrap;margin-bottom:18px}.lc-search{max-width:none;flex-basis:100%;order:0}.lc-toolbar>.lc-count{margin-right:auto}.lc-toolbar>.lc-button{margin-left:auto}.lc-sort{margin-left:auto}.lc-class-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}.lc-create-card,.lc-class-entry{min-height:178px}.lc-summary-band{margin-bottom:20px;border-radius:20px}.lc-summary{grid-template-columns:48px minmax(0,1fr) auto;padding:16px;gap:12px;border-radius:16px}.lc-summary-mark,.lc-summary-mark>.lc-artwork{width:48px;height:48px}.lc-summary>.lc-button{min-height:44px;padding:10px 12px;font-size:12px!important}.lc-roster-controls{gap:14px;margin-bottom:18px}.lc-roster-controls>.lc-detail-tabs{flex-basis:100%}.lc-roster-controls>.lc-toolbar{padding-bottom:16px}.lc-student-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.lc-student-card{min-height:170px;padding:15px 12px}.lc-student-card h2{font-size:16px}.lc-state{min-height:360px}.lc-table th,.lc-table td{padding-left:15px;padding-right:15px}.lc-student-header{padding:0 16px}.lc-dialog-form{padding:22px}.lc-dialog-footer{gap:8px}.lc-dialog-footer>.lc-button{padding:9px 12px}.lc-state>.lc-actions{flex-direction:column}.lc-connection-row{grid-template-columns:48px minmax(0,1fr) auto;gap:12px;padding:16px}.lc-connection-row>.lc-quiz-copy{grid-column:2 / -1}.lc-connection-row>.lc-button{grid-column:2;justify-self:start}.lc-connection-row>.lc-row-menu{grid-column:3;grid-row:2}.lc-session-row{padding:14px}.lc-session-actions{flex-basis:100%}.lc-detail-tabs{gap:24px}.lc-picker-row{padding:14px;gap:12px}.lc-picker-row>.lc-button{padding:8px 12px}}
@media(max-width:400px){.lc-summary-settings{width:44px;min-width:44px;padding:10px!important}.lc-settings-label{display:none}}
@media(prefers-reduced-motion:reduce){.lc-dialog,.lc-menu-panel{animation:none}.lc-workspace *,.lc-dialog *,.lc-login *,.lc-state *,.lc-student-header *,.lc-create-card::before{scroll-behavior:auto;transition:none!important}.lc-button:active,.lc-icon-button:active,.lc-create-card:active{transform:none}}