.grade-course-list{gap:18px;margin:24px 0 30px;display:grid}.admin-inline-actions{border:1px solid var(--accent-a16);background:var(--white-a72);box-shadow:0 10px 24px var(--green-dark-a07);border-radius:16px;flex-wrap:wrap;align-items:center;gap:10px;margin:18px 0 26px;padding:12px;display:flex}.admin-inline-actions span{color:var(--text-muted);font-family:Inter,sans-serif;font-size:.92rem;font-weight:700}.admin-inline-actions a{border:1px solid var(--accent-a20);background:var(--text-inverse);min-height:40px;color:var(--accent);border-radius:12px;align-items:center;gap:8px;padding:9px 12px;font-family:Inter,sans-serif;font-weight:800;text-decoration:none;transition:all .2s;display:inline-flex}.admin-inline-actions a:hover{border-color:var(--accent);background:var(--accent);color:var(--text-inverse);box-shadow:0 10px 22px var(--accent-a16);transform:translateY(-1px)}.student-admin-card-wrap{gap:10px;min-width:0;display:grid;position:relative}.student-admin-card-wrap>.topic-card,.student-admin-card-wrap>.task-card{width:100%;min-height:100%}.lesson-card-wrap>.task-card{padding-right:24px}.lesson-card-wrap:has(.lesson-actions>*)>.task-card{padding-right:112px}.student-admin-plus{z-index:3;border:1px solid var(--accent-a22);background:var(--text-inverse);width:38px;height:38px;color:var(--accent);box-shadow:0 8px 22px var(--green-dark-a14);cursor:pointer;border-radius:50%;place-items:center;transition:all .2s;display:inline-grid;position:absolute;top:12px;right:12px}.student-admin-plus:hover{background:var(--accent);color:var(--text-inverse);transform:translateY(-1px)scale(1.04)}.student-admin-card-actions,.student-admin-task-actions{z-index:4;gap:8px;display:flex;position:absolute;top:12px;right:58px}.student-admin-card-actions.lesson-actions{border:1px solid var(--green-dark-a12);background:var(--white-a94);box-shadow:0 10px 24px var(--green-dark-a12);border-radius:999px;gap:6px;padding:5px;top:12px;right:12px}.student-admin-card-actions.lesson-actions .student-admin-icon{width:32px;height:32px;box-shadow:none}.student-admin-card-actions.inline{justify-content:flex-end;margin:-8px 12px 10px 0;position:relative;top:auto;right:auto}.student-admin-task-actions{top:14px;right:14px}.student-admin-icon{border:1px solid var(--green-dark-a14);background:var(--text-inverse);width:34px;height:34px;color:var(--text-muted);box-shadow:0 8px 18px var(--green-dark-a12);cursor:pointer;border-radius:50%;place-items:center;transition:all .2s;display:inline-grid}.student-admin-icon:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}.student-admin-task-actions .student-admin-icon{box-shadow:none}.student-admin-section-line{justify-content:flex-end;min-height:44px;margin:0 0 18px;display:flex;position:relative}.student-admin-section-line .student-admin-plus{position:static}.student-admin-inline-row{justify-content:flex-end;min-height:42px;margin-top:12px;display:flex;position:relative}.student-admin-inline-row .student-admin-plus{position:static}.student-admin-panel{z-index:5;background:var(--white-a96);width:min(1280px,100%);min-width:min(520px,100vw - 32px);max-width:calc(100vw - 32px);min-height:260px;box-shadow:0 0 0 1px #3f7f4424 inset, 0 16px 36px var(--green-dark-a14);border:2px solid #3f7f44b3;border-radius:18px;gap:16px;padding:22px;display:grid;position:relative;overflow:visible}.student-admin-card-wrap>.student-admin-panel{z-index:1000;overscroll-behavior:contain;width:min(1180px,100vw - 32px);max-height:calc(100vh - 96px);position:fixed;top:64px;left:50%;overflow:visible auto;transform:translate(-50%)}.student-admin-import__button{color:#1e5fae;cursor:pointer;background:#fff;border:1px solid #2b71d2;border-radius:8px;align-items:center;gap:7px;min-height:34px;padding:0 12px;font-size:14px;font-weight:600;display:inline-flex}.student-admin-import__button:hover{background:#edf5ff}.student-admin-import__action{align-items:center;gap:6px;display:inline-flex}.student-admin-import__button:disabled{cursor:wait;opacity:.65}.student-admin-import__button--danger{color:#a83227;border-color:#d36d61}.student-admin-import__button--danger:hover{background:#fff2ef}.student-admin-import__action .student-admin-import__error{width:auto;max-width:260px;margin:0;padding:4px 7px;font-size:11px}.student-admin-import__success{color:#187a3b}.student-admin-import__skipped{color:#725313;text-align:left;background:#fffaf0;border:1px solid #ead59d;border-radius:10px;width:100%;max-height:220px;padding:10px 12px;overflow:auto}.student-admin-import__skipped ul{margin:7px 0 0;padding-left:20px}.student-admin-import__skipped li+li{margin-top:4px}.student-admin-import__error{color:#9f2418;text-align:left;white-space:pre-wrap;overflow-wrap:anywhere;background:#fff6f4;border:1px solid #efc3bd;border-radius:10px;width:100%;max-height:320px;padding:11px 12px;overflow:auto}.student-admin-import-modal{z-index:2000;background:#14251b73;place-items:center;padding:20px;animation:.16s ease-out student-admin-import-fade;display:grid;position:fixed;inset:0}.student-admin-import-modal__card{text-align:center;background:#fff;border-radius:18px;justify-items:center;gap:14px;width:min(430px,100%);max-height:100%;padding:32px;animation:.18s ease-out student-admin-import-pop;display:grid;position:relative;overflow-y:auto;box-shadow:0 20px 60px #0000003d}.student-admin-import-modal__card h3,.student-admin-import-modal__card p{margin:0}.student-admin-import-modal__card p{color:var(--text-muted)}.student-admin-import-modal__icon{color:#2b71d2;font-size:42px}.student-admin-import-modal__icon.fa-check-circle{color:#187a3b}.student-admin-import-modal__icon.fa-exclamation-circle{color:#bd2e2e}.student-admin-import-modal__close{cursor:pointer;background:0 0;border:0;font-size:20px;position:absolute;top:12px;right:12px}.student-admin-import-modal__select,.student-admin-import-modal__done{color:#fff;font:inherit;cursor:pointer;background:#2b71d2;border:0;border-radius:9px;padding:11px 18px;font-weight:600}.student-admin-import-modal__select{color:#1e5fae;background:#f5f9ff;border:2px dashed #8fb7ec;justify-items:center;gap:5px;width:min(310px,100%);min-height:128px;transition:all .16s;display:grid}.student-admin-import-modal__select small{color:#6d7d91;font-weight:400}.student-admin-import-modal__select.is-dragging,.student-admin-import-modal__select:hover{background:#e8f2ff;border-color:#2b71d2;transform:translateY(-1px)}.student-admin-import-modal__paste{text-align:left;gap:8px;width:min(360px,100%);display:grid}.student-admin-import-modal__paste>span{color:#667569;text-align:center;font-size:13px}.student-admin-import-modal__paste textarea{resize:vertical;border:1px solid #cad9cc;border-radius:10px;min-height:128px;padding:10px;font:12px/1.45 ui-monospace,SFMono-Regular,Menlo,monospace}.student-admin-import-modal__paste button{color:#fff;font:inherit;cursor:pointer;background:#2b71d2;border:0;border-radius:9px;justify-self:center;padding:9px 14px;font-weight:600}.student-admin-import-modal__paste button:disabled{cursor:not-allowed;opacity:.5}@keyframes student-admin-import-fade{0%{opacity:0}to{opacity:1}}@keyframes student-admin-import-pop{0%{opacity:0;transform:translateY(10px)scale(.98)}to{opacity:1;transform:translateY(0)scale(1)}}.task-hints{gap:8px;margin:4px 0;display:grid}.task-hints__button{color:var(--text);cursor:pointer;font:inherit;border:1px solid #d9a300;border:1px solid var(--border);background:#fff3d2;background:var(--text-inverse);border-radius:12px;justify-self:start;padding:11px 16px;font-weight:800;transition:background-color .18s,border-color .18s,color .18s}.task-hints__button:hover,.task-hints__button:focus-visible{color:#9a5700;background:#fff3d2;border-color:#d9a300}.task-hints__button,.check-btn,.solution-btn{box-sizing:border-box;text-align:center;border-radius:30px;justify-content:center;justify-self:start;align-items:center;gap:8px;width:220px;max-width:100%;min-height:44px;padding:11px 20px;line-height:1.2;display:inline-flex}.task-video-link{border:1px solid var(--accent-a22);background:var(--accent-a08);border-radius:10px;justify-content:center;align-items:center;gap:7px;width:fit-content;padding:7px 11px;font-size:.88rem;font-weight:800;transition:background-color .18s,border-color .18s,color .18s;display:inline-flex;color:var(--accent)!important;text-decoration:none!important}.task-video-link:hover,.task-video-link:focus-visible{border-color:var(--accent-a24);background:var(--accent-a16);color:var(--accent-dark)!important;text-decoration:none!important}.course-topic-legacy .task-hints__button,.topic-task-list .task-hints__button{border-radius:30px;padding:8px 24px}.task-hints__panel{background:#fffdf1;border:1px solid #edd36d;border-radius:10px;gap:12px;padding:12px;display:grid}.task-hints__panel p{margin:0}.task-hints__image{width:fit-content;max-width:100%;display:block}.task-hints__image img{object-fit:contain;border:1px solid #ead88e;border-radius:10px;max-width:min(100%,560px);max-height:360px;display:block}.task-hints__head,.task-hints__navigation{justify-content:space-between;align-items:center;gap:10px;display:flex}.task-hints__head button{color:#7a5900;cursor:pointer;background:0 0;border:0}.task-hints__navigation button{color:#7a5900;cursor:pointer;font:inherit;background:#fff;border:1px solid #e2ba31;border-radius:7px;padding:6px 10px}.task-hints__navigation button:disabled{cursor:default;opacity:.45}.task-meta-icons{align-items:center;gap:2px;min-height:28px;margin:3px 0 4px;display:flex}.task-meta-icon{color:#718078;cursor:help;border-radius:50%;place-items:center;width:27px;height:27px;font-size:12px;transition:background .16s,color .16s;display:inline-grid;position:relative}.task-meta-icon:hover,.task-meta-icon:focus-visible{color:#2e6d43;background:#eef5ef;outline:none}.task-meta-icon:after{content:attr(data-tooltip);z-index:20;color:#fff;white-space:normal;opacity:0;pointer-events:none;background:#1f3326;border:1px solid #2048261f;border-radius:8px;width:max-content;max-width:min(320px,78vw);padding:7px 9px;font-size:11px;font-weight:600;line-height:1.35;transition:opacity .15s,transform .15s;position:absolute;bottom:calc(100% + 7px);left:0;transform:translateY(3px);box-shadow:0 6px 18px #11281829}.task-meta-icon:hover:after,.task-meta-icon:focus-visible:after{opacity:1;transform:translateY(0)}.student-admin-card-wrap>.student-admin-panel .student-admin-panel__head{z-index:2;background:linear-gradient(180deg, var(--white-a96), var(--white-a96));padding-top:2px;position:sticky;top:-22px}.topics-grid .student-admin-card-wrap>.student-admin-panel,.accordion-content .student-admin-card-wrap>.student-admin-panel,.topics-panel .student-admin-card-wrap>.student-admin-panel{width:min(1180px,100vw - 32px);max-width:calc(100vw - 32px)}.topics-grid .student-admin-card-wrap{overflow:visible}.accordion-content .student-admin-inline-row{width:100%}.student-admin-panel__head{justify-content:space-between;align-items:center;gap:12px;min-height:38px;padding-right:48px;display:flex;position:relative}.student-admin-panel__head strong{color:var(--text);font-family:Inter,sans-serif;font-size:.98rem}.student-admin-panel__head button{background:var(--text-inverse);width:38px;height:38px;color:var(--accent);cursor:pointer;box-shadow:0 10px 24px var(--green-dark-a18);border:2px solid #3f7f4461;border-radius:50%;place-items:center;display:inline-grid;position:absolute;top:0;right:0}.student-admin-panel__head button:hover{background:var(--bg-accent);border-color:var(--accent)}.student-admin-form{gap:14px;display:grid}.student-admin-task-form{gap:16px}.student-admin-form__grid{grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:12px;display:grid}.student-admin-task-form__top{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));align-items:end}.student-admin-form input,.student-admin-form select,.student-admin-form textarea{border:1px solid var(--green-dark-a22);background:var(--text-inverse);width:100%;min-height:46px;color:var(--text);font:inherit;border-radius:12px;padding:11px 12px}.student-admin-form select{appearance:none;background-image:linear-gradient(45deg, transparent 50%, var(--gray-500) 50%), linear-gradient(135deg, var(--gray-500) 50%, transparent 50%), linear-gradient(to right, var(--accent-a12), var(--accent-a12)), linear-gradient(180deg, var(--text-inverse), var(--bg-muted));cursor:pointer;background-position:calc(100% - 18px),calc(100% - 12px),calc(100% - 42px);background-repeat:no-repeat;background-size:6px 6px,6px 6px,1px 60%,100% 100%;border-radius:16px;padding-right:52px;font-weight:750}.student-admin-form select:hover{border-color:var(--accent-a45);box-shadow:0 8px 18px var(--green-dark-a06)}.student-admin-select--wide{min-height:48px}.student-admin-form select:focus{background-image:linear-gradient(45deg, transparent 50%, var(--accent) 50%), linear-gradient(135deg, var(--accent) 50%, transparent 50%), linear-gradient(to right, var(--accent-a18), var(--accent-a18)), linear-gradient(180deg, var(--text-inverse), var(--bg-accent))}.student-admin-form textarea{resize:vertical;min-height:128px}.student-admin-choice-options{min-height:130px}.student-admin-field,.student-admin-points-field{gap:6px;display:grid}.student-admin-field>span,.student-admin-points-field span{color:var(--text-muted);font-size:.82rem;font-weight:800;line-height:1.2}.student-admin-points-field input{max-width:none}.student-admin-toggle{cursor:pointer;align-items:center;gap:10px;min-height:42px;display:flex}.student-admin-toggle input{opacity:0;pointer-events:none;position:absolute}.student-admin-toggle__track{background:#d8dee8;border-radius:999px;flex:none;width:40px;height:22px;transition:background .18s;position:relative}.student-admin-toggle__track:after{content:"";background:#fff;border-radius:50%;width:16px;height:16px;transition:transform .18s;position:absolute;top:3px;left:3px;box-shadow:0 1px 3px #192a4640}.student-admin-toggle input:checked+.student-admin-toggle__track{background:var(--primary,#2d67e8)}.student-admin-toggle input:checked+.student-admin-toggle__track:after{transform:translate(18px)}.student-admin-toggle input:focus-visible+.student-admin-toggle__track{outline-offset:2px;outline:3px solid #2d67e847}.student-admin-latex-toggle{width:fit-content;max-width:100%;margin-top:-6px}.student-admin-latex-toggle>span:last-child{gap:1px;display:grid}.student-admin-latex-toggle small{color:#708076;font-size:12px;font-weight:500}.student-admin-hint-latex-toggle{color:#475a4d;cursor:pointer;align-items:center;gap:7px;width:fit-content;font-size:12px;font-weight:800;display:inline-flex}.student-admin-hint-latex-toggle input{width:16px;height:16px;accent-color:var(--primary,#2d67e8);min-height:0!important}.student-admin-task-modal{z-index:3000;overscroll-behavior:contain;background:#1222197a;place-items:start center;padding:32px 16px;display:grid;position:fixed;inset:0;overflow-y:auto}.student-admin-task-modal .student-admin-panel{background:#fff;width:min(980px,100%);min-width:0;margin:0 auto}.student-admin-correct-options{background:#f8fbf8;border:1px solid #2a5f3a2e;border-radius:10px;gap:8px;margin-top:10px;padding:12px;display:grid}.student-admin-correct-options>span{color:var(--text-muted);font-size:.9rem}.student-admin-correct-options label{cursor:pointer;min-height:30px;color:var(--text);border-radius:7px;grid-template-columns:18px minmax(0,1fr);align-items:center;gap:10px;padding:5px 7px;display:grid}.student-admin-correct-options label:hover{background:#3f7f4414}.student-admin-correct-options input[type=radio],.student-admin-correct-options input[type=checkbox]{box-sizing:border-box;min-width:18px;height:18px;min-height:18px;accent-color:var(--accent);margin:0;padding:0;width:18px!important}.student-admin-correct-options label>span{min-width:0;color:var(--text);font-size:.96rem;font-weight:500;line-height:1.45}.student-admin-field--compact{width:min(420px,100%)}.student-admin-image-line{border:1px dashed var(--green-dark-a22);background:var(--bg-soft);min-height:46px;color:var(--text-muted);border-radius:14px;grid-template-columns:minmax(0,1fr) 42px;align-items:center;gap:10px;padding:8px 8px 8px 14px;font-size:.92rem;font-weight:750;display:grid}.student-admin-image-line:focus-within,.student-admin-image-line:focus{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-a12);outline:none}.student-admin-image-line label{border:1px solid var(--accent-a20);background:var(--text-inverse);width:34px;height:34px;color:var(--accent);cursor:pointer;border-radius:50%;place-items:center;display:inline-grid}.student-admin-image-line input{display:none}.student-admin-solution-media-row{grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:10px;display:grid}.student-admin-upload-row{grid-template-columns:minmax(260px,1fr) max-content max-content;align-items:center;gap:10px;display:grid}.student-admin-user-search{position:relative}.student-admin-user-suggest{z-index:20;border:1px solid var(--green-dark-a16);background:var(--text-inverse);max-height:220px;box-shadow:0 14px 28px var(--green-dark-a14);border-radius:12px;gap:6px;padding:8px;display:grid;position:absolute;top:calc(100% + 6px);left:0;right:0;overflow:auto}.student-admin-user-suggest button{color:var(--text);text-align:left;cursor:pointer;background:0 0;border:0;border-radius:10px;gap:3px;padding:9px 10px;display:grid}.student-admin-user-suggest button:hover,.student-admin-user-suggest button.active{background:var(--bg-accent)}.student-admin-user-suggest span{color:var(--text-muted);font-size:.84rem}.student-admin-topic-fields{gap:10px;display:grid}.student-admin-topic-search{position:relative}.student-admin-topic-suggest{z-index:30;border:1px solid var(--green-dark-a16);background:var(--text-inverse);max-height:240px;box-shadow:0 14px 28px var(--green-dark-a14);border-radius:12px;gap:6px;padding:8px;display:grid;position:absolute;top:calc(100% + 6px);left:0;right:0;overflow:auto}.student-admin-topic-suggest button{color:var(--text);text-align:left;cursor:pointer;background:0 0;border:0;border-radius:10px;gap:3px;padding:9px 10px;display:grid}.student-admin-topic-suggest button:hover,.student-admin-topic-suggest button.active{background:var(--bg-accent)}.student-admin-topic-suggest span,.student-admin-topic-fields__hint{color:var(--text-muted);font-size:.84rem}.student-admin-topic-create{margin-top:2px;border-top:1px solid var(--green-dark-a10)!important}.student-admin-form input:focus,.student-admin-form select:focus,.student-admin-form textarea:focus{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-a12);outline:none}.student-admin-check{width:fit-content;color:var(--text);align-items:center;gap:9px;font-weight:700;display:inline-flex}.student-admin-check input{width:auto;accent-color:var(--accent)}.student-admin-form button[type=submit]{background:var(--accent);width:100%;color:var(--text-inverse);font:inherit;cursor:pointer;border:0;border-radius:12px;margin-top:8px;padding:11px 14px;font-weight:800}.student-admin-form button[type=submit]:disabled{opacity:.65;cursor:wait}.student-admin-error{border:1px solid var(--danger-border);background:var(--danger-bg);color:var(--danger-text);white-space:pre-wrap;overflow-wrap:anywhere;border-radius:12px;padding:10px 12px;font-size:.9rem}.student-admin-secondary{border:1px solid var(--accent-a22);background:var(--bg-accent);color:var(--accent);font:inherit;cursor:pointer;border-radius:12px;padding:10px 12px;font-weight:800}.student-admin-search{border:1px solid var(--green-dark-a12);background:var(--bg-soft);border-radius:14px;gap:10px;padding:10px;display:grid}.student-admin-search__bar{grid-template-columns:1fr auto;gap:8px;display:grid}.student-admin-search__bar button,.student-admin-search__results button{border:1px solid var(--accent-a18);background:var(--text-inverse);color:var(--text);font:inherit;cursor:pointer;border-radius:11px;padding:9px 11px}.student-admin-search__results{gap:8px;max-height:230px;display:grid;overflow:auto}.student-admin-search__results button{text-align:left;gap:4px;display:grid}.student-admin-search__results span{color:var(--text-muted);font-size:.88rem}.student-admin-access-list{gap:8px;display:grid}.student-admin-access-row{grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:8px;display:grid}.student-admin-access-row button{border:1px solid var(--green-dark-a18);background:var(--text-inverse);color:var(--text);text-align:left;border-radius:8px;padding:9px 10px}.student-admin-access-row button:last-child{color:var(--danger-text);text-align:center}.student-admin-access-row strong,.student-admin-access-row span{display:block}.student-admin-access-row span{color:var(--text-muted);font-size:.82rem}.task-card--locked{cursor:default;opacity:.78}.course-card--locked{cursor:default;opacity:.82}.course-card--locked:hover{background:var(--bg-card);border-color:var(--border);box-shadow:var(--shadow);transform:none}.course-section-lock{color:var(--warning-text);align-items:center;gap:7px;margin-bottom:10px;font-size:.86rem;font-weight:800;display:inline-flex}.course-section-access-text{font-weight:700;color:var(--warning-text)!important}.course-node-card{border:2px solid var(--green-dark-a10);grid-template-rows:auto minmax(54px,auto) minmax(70px,1fr) minmax(28px,auto) auto;gap:12px;min-height:220px;display:grid;position:relative;overflow:hidden}.course-node-card>*{z-index:1;position:relative}.course-node-card--folder{background:linear-gradient(145deg, var(--accent-a08), transparent 58%), var(--text-inverse);border-color:var(--accent-a22)}.task-card.course-node-card--folder:hover{border-color:var(--accent);box-shadow:0 16px 32px var(--accent-a18)}.course-node-card--lesson{background:linear-gradient(145deg, var(--sky-a10), transparent 58%), var(--text-inverse);border-color:var(--sky-a24)}.task-card.course-node-card--lesson:hover{border-color:var(--info-light);box-shadow:0 16px 32px #0ea5e933}.course-node-card h3{grid-row:2;min-height:34px}.course-node-card p{grid-row:3;min-height:42px}.course-node-card .task-stats{grid-row:4;min-height:28px}.course-node-card .course-card-progress{grid-row:5;align-self:end}.course-node-card--draft{opacity:.82;outline:1px dashed #64748b8c}.course-draft-badge{background:var(--gray-100);width:fit-content;color:var(--gray-500);border-radius:999px;align-items:center;gap:7px;margin-bottom:8px;padding:5px 10px;font-size:.78rem;font-weight:800;display:inline-flex}.student-admin-task-add-bottom{justify-content:flex-end;min-height:44px;margin-top:8px;display:flex}.student-admin-task-add-bottom .student-admin-plus{position:static}.student-admin-paste-zone{border:1px dashed var(--accent-a35);background:var(--bg-accent);min-height:46px;color:var(--text-muted);border-radius:12px;align-items:center;gap:10px;padding:10px 12px;font-size:.9rem;font-weight:700;display:flex}.student-admin-paste-zone:focus{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-a12);outline:none}.admin-edit-mode-toggle{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:10px;width:100%;margin:12px 0 18px;display:flex}.admin-edit-mode-toggle label{border:1px solid var(--green-dark-a12);background:var(--text-inverse);color:var(--text);box-shadow:0 8px 18px var(--green-dark-a08);cursor:pointer;-webkit-user-select:none;user-select:none;border-radius:999px;align-items:center;gap:12px;padding:8px 14px 8px 10px;font-weight:800;display:inline-flex}.admin-edit-mode-toggle input{opacity:0;pointer-events:none;position:absolute}.admin-edit-mode-toggle span{align-items:center;gap:10px;display:inline-flex;position:relative}.admin-edit-mode-toggle span:before{content:"";background:var(--gray-300);border-radius:999px;width:46px;height:26px;transition:background .2s;box-shadow:inset 0 1px 4px #0f172a2e}.admin-edit-mode-toggle span:after{content:"";background:var(--text-inverse);border-radius:50%;width:20px;height:20px;margin-left:3px;transition:transform .2s,background .2s;position:absolute;box-shadow:0 2px 8px #0f172a38}.admin-edit-mode-toggle input:checked+span:before{background:var(--accent)}.admin-edit-mode-toggle input:checked+span:after{background:var(--bg-accent);transform:translate(20px)}.admin-edit-mode-toggle input:focus-visible+span:before{outline:3px solid var(--accent-a18);outline-offset:3px}.admin-edit-mode-toggle small{color:var(--danger-text)}.student-admin-material-create{gap:10px;display:grid}.student-admin-material-create__list{gap:8px;display:grid}.student-admin-material-create__list button{border:1px solid var(--green-dark-a12);background:var(--text-inverse);color:var(--text);text-align:left;cursor:pointer;border-radius:10px;align-items:center;gap:9px;padding:9px 10px;display:flex}.student-admin-search__bar button:hover,.student-admin-search__results button:hover{background:var(--bg-accent);border-color:var(--accent-a35)}.page-center{justify-content:center;width:100%;display:flex}.content-limited{width:min(100%,980px);margin:0 auto}.course-topic-page .back-btn{margin-bottom:18px}.course-topic-tabs{margin-top:18px}.course-topic-video-block{margin:30px 0}.course-topic-video-block h2,.course-topic-section h2{color:var(--text);letter-spacing:0;align-items:center;gap:10px;margin:0 0 15px;font-family:Inter,sans-serif;display:flex}.course-topic-video-block .video-wrapper{border:1px solid var(--border);background:var(--gray-900);border-radius:18px;overflow:hidden}.course-video-slot{min-height:400px}.course-topic-video-block iframe,.video-wrapper iframe{border:0;width:100%;min-height:400px;display:block}.course-topic-video-block p{color:var(--gray-500);text-align:center;margin-top:15px;font-style:italic}.course-video-link-button{background:var(--accent);min-height:52px;color:var(--text-inverse);box-shadow:0 14px 28px var(--accent-a18);border:0;border-radius:14px;justify-content:center;align-items:center;gap:10px;padding:14px 18px;font-family:Inter,sans-serif;font-weight:800;text-decoration:none;transition:transform .2s,box-shadow .2s;display:inline-flex}.course-video-link-button:hover{box-shadow:0 18px 34px var(--accent-a24);transform:translateY(-1px)}.content-grid-single{grid-template-columns:1fr;display:grid}.main-content-single{min-width:0}.section.course-topic-section{gap:18px;margin:28px 0 46px;display:grid}.course-topic-section-head{justify-content:space-between;align-items:center;gap:14px;min-height:44px;display:flex;position:relative}.course-topic-section-head .student-admin-plus{position:static}.course-topic-section-head__actions{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:8px;display:flex}.task{box-shadow:0 10px 26px var(--green-dark-a07);background:#ffffffc7;border:1px solid #20481a1f;border-radius:18px;gap:16px;padding:22px;display:grid;position:relative}.task-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}.task-number-new,.task-difficulty{border-radius:999px;align-items:center;padding:7px 12px;font-size:.86rem;font-weight:800;display:inline-flex}.task-number-new{background:var(--accent-a12);color:var(--accent)}.task-difficulty{background:var(--work-progress-bg);color:var(--text-muted)}.task-difficulty__info{cursor:help;border:1px solid;border-radius:50%;place-items:center;width:18px;height:18px;margin-left:5px;font:800 .72rem/1 sans-serif;display:inline-grid;position:relative}.task-difficulty__info:after{content:attr(data-tooltip);z-index:15;background:var(--gray-800);width:max-content;max-width:min(280px,75vw);color:var(--text-inverse);opacity:0;pointer-events:none;border-radius:9px;padding:8px 10px;font-size:.78rem;font-weight:600;line-height:1.35;transition:all .16s;position:absolute;bottom:calc(100% + 9px);right:0;transform:translateY(4px);box-shadow:0 8px 22px #0f172a2e}.task-difficulty__info:hover:after,.task-difficulty__info:focus-visible:after{opacity:1;transform:translateY(0)}.answer-section{background:var(--work-progress-bg);border-radius:16px;gap:12px;padding:14px;display:grid}.answer-input-group{gap:7px;display:grid}.answer-input-group label{color:var(--text-muted);font-size:.9rem;font-weight:800}.answer-input-course{border:1px solid var(--green-dark-a22);background:var(--text-inverse);width:100%;color:var(--text);font:inherit;border-radius:12px;padding:12px 13px;transition:border-color .25s,box-shadow .25s,background-color .25s}.answer-input-course.has-error,.answer-input-course.has-error:focus{border-color:#bf261ef2;box-shadow:0 0 0 3px #bf261e33}.answer-input-course.has-success,.answer-input-course.has-success:focus{border-color:#2a8439e0;box-shadow:0 0 0 3px #2a843929}.answer-input-error{color:var(--danger-text);margin-top:1px;font-size:.78rem;font-weight:600;display:block}.answer-input-success{color:var(--green-success-text);margin-top:1px;font-size:.78rem;font-weight:600;display:block}.answer-input-course:focus{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-a12);outline:none}.task-choice-list{gap:8px;display:grid}.task-choice-option{border:1px solid var(--green-dark-a16);background:var(--text-inverse);color:var(--text);cursor:pointer;border-radius:10px;align-items:flex-start;gap:10px;padding:10px 12px;display:flex}.task-choice-option input{accent-color:var(--accent);margin-top:3px}.check-btn,.solution-btn{background:var(--accent);width:fit-content;color:var(--text-inverse);font:inherit;cursor:pointer;border:0;border-radius:12px;padding:11px 16px;font-weight:800}.check-btn:disabled{opacity:.68;cursor:not-allowed}.check-result,.solution{border-radius:14px;padding:12px 14px}.check-result.success,.solution{border:1px solid var(--success-soft);background:var(--green-success-bg);color:var(--green-success-text)}.solution.visible{display:block}.check-result.error{border:1px solid var(--danger-border);background:var(--danger-bg);color:var(--danger-text)}.admin-existing-search{gap:10px;display:grid}.admin-existing-results{gap:8px;max-height:260px;display:grid;overflow:auto}.admin-existing-results button{border:1px solid var(--admin-line,var(--green-dark-a14));background:var(--text-inverse);color:var(--text);text-align:left;font:inherit;cursor:pointer;border-radius:12px;gap:4px;padding:10px 12px;display:grid}.admin-existing-results span{color:var(--text-muted);font-size:.88rem}.course-card{-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);color:var(--text);border:2px solid var(--border);box-shadow:var(--shadow);background:#fff6;border-radius:16px;grid-column:1/-1;margin-bottom:15px;padding:24px 28px;text-decoration:none;transition:all .3s;display:block;position:relative;overflow:hidden}.course-card:before{display:none}.course-card:hover{border-color:var(--accent);box-shadow:var(--shadow-hover);background:#fff9;transform:translateY(-3px)}.course-badge{background:var(--accent-soft);color:var(--accent);letter-spacing:1.5px;text-transform:uppercase;border:1px solid var(--accent-a10);border-radius:30px;margin-bottom:10px;padding:4px 16px;font-family:Inter,sans-serif;font-size:.7rem;font-weight:500;display:inline-block}.course-card h3{color:var(--text);letter-spacing:.5px;margin:6px 0 4px;font-family:Inter,sans-serif;font-size:1.5rem;font-weight:600}.course-description{color:var(--text-muted);margin:4px 0 14px;font-family:Inter,sans-serif;font-size:.95rem;font-weight:300}.course-stats{background:var(--black-a02);border:1px solid var(--border);border-radius:50px;flex-wrap:wrap;gap:20px;width:fit-content;margin-bottom:16px;padding:8px 18px;display:flex}.course-stats span{color:var(--text-muted);align-items:center;gap:8px;font-family:Inter,sans-serif;font-size:.85rem;display:flex}.course-stats i{color:var(--accent)}.course-card-progress{background:var(--accent-a12);border-radius:999px;width:100%;height:8px;margin:12px 0 8px;overflow:hidden}.course-card-progress span{border-radius:inherit;background:linear-gradient(to right, var(--accent), var(--success-light));height:100%;transition:width .25s;display:block}.course-card-progress.on-dark{background:#ffffff2e}.course-card-progress.on-dark span{background:linear-gradient(to right, var(--warning-light), var(--success-light))}.course-progress{border-top:1px solid var(--border);justify-content:space-between;align-items:center;margin-top:10px;padding-top:14px;display:flex}.course-progress span:first-child{color:var(--text-muted);letter-spacing:.5px;font-family:Inter,sans-serif;font-size:.9rem}.course-arrow{color:var(--accent);background:var(--accent-a04);border:1px solid var(--accent-a10);border-radius:50%;justify-content:center;align-items:center;width:42px;height:42px;font-size:1.3rem;transition:transform .3s;display:flex}.course-card:hover .course-arrow{background:var(--accent);color:var(--text-inverse);border-color:var(--accent);box-shadow:0 0 20px var(--accent-a15);transform:translate(6px)scale(1.05)}.course-card--locked .course-arrow{background:var(--gray-100);width:auto;min-width:78px;height:32px;color:var(--gray-500);text-transform:uppercase;border-color:#64748b29;border-radius:999px;padding:0 12px;font-size:.78rem;font-weight:800}.course-card--locked:hover .course-arrow{background:var(--gray-100);box-shadow:none;color:var(--gray-600);border-color:#64748b33;transform:none}.course-info{color:#fff;box-sizing:border-box;background:linear-gradient(135deg,#111a17 0%,#1f4938 60%,#397b59 100%);border:1px solid #dcffeb2e;border-radius:20px;width:100%;max-width:100%;margin:0 0 28px;padding:28px 32px;position:relative;overflow:hidden;box-shadow:0 12px 30px #18331b38,0 4px 12px #00000014}.course-info:before{content:"";pointer-events:none;background:radial-gradient(circle,#ffffff1f 0%,#0000 70%);border-radius:50%;width:340px;height:340px;position:absolute;top:-40%;right:-15%}.course-title{color:#fff;letter-spacing:-.02em;margin:0 0 6px;font-family:Inter,sans-serif;font-size:2.1rem;font-weight:700}.course-subtitle{opacity:.92;color:#eafaf1e0;margin-bottom:20px;font-family:Inter,sans-serif;font-size:1.1rem;line-height:1.45}.course-meta-stats{flex-wrap:wrap;gap:12px;margin-bottom:20px;display:flex}.meta-item{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#00000038;border:1px solid #ffffff24;border-radius:9999px;align-items:center;gap:8px;padding:7px 16px;display:flex}.meta-item i{color:#ffd166;font-size:.95rem}.meta-item span{color:#fff;font-size:.92rem;font-weight:600}.course-progress-block{background:var(--black-a20);border:1px solid var(--white-a10);border-radius:16px;margin-top:10px;padding:18px 22px}.progress-label{color:#ffffffe6;justify-content:space-between;margin-bottom:10px;font-size:.95rem;display:flex}.progress-label span:last-child{color:var(--warning-mid);font-weight:600}.progress-bar-container{background:var(--white-a15);border-radius:20px;height:8px;overflow:hidden}.progress-bar-fill{background:linear-gradient(to right, var(--warning-mid), var(--warning-light));border-radius:20px;height:100%;transition:width .3s}.resource-icons{justify-content:center;gap:20px;margin:18px 0 22px;display:flex}.resource-icons--folder,.resource-icons--lesson{justify-content:flex-start;gap:12px;margin:16px 0 18px}.resource-icons--folder .resource-icon{background:var(--bg-accent);border-color:var(--accent-a18);color:var(--accent)}.resource-icons--lesson .resource-icon{background:var(--info-soft);color:var(--info);border-color:#0ea5e92e}.resource-icon{background:linear-gradient(145deg, var(--text-inverse), var(--bg-muted));width:42px;height:42px;color:var(--gray-500);box-shadow:0 4px 10px var(--black-a03);border:1px solid var(--gray-100);cursor:pointer;border-radius:50%;justify-content:center;align-items:center;font-size:1.2rem;transition:all .25s cubic-bezier(.4,0,.2,1);display:flex;position:relative}.resource-icon:hover{background:linear-gradient(145deg, var(--teal), var(--success-light));color:#fff;border-color:#0000;transform:scale(1.15)translateY(-4px);box-shadow:0 10px 18px #00b09b59}.resource-icon:before{content:attr(data-tooltip);background:var(--gray-800);color:#fff;white-space:nowrap;opacity:0;visibility:hidden;pointer-events:none;letter-spacing:.3px;box-shadow:0 5px 12px var(--black-a15);border-radius:30px;padding:4px 10px;font-size:.7rem;font-weight:500;transition:all .2s;position:absolute;bottom:-30px;left:50%;transform:translate(-50%)scale(.8)}.resource-icon:hover:before{opacity:1;visibility:visible;bottom:-40px;transform:translate(-50%)scale(1)}.oge-task-tag{background:linear-gradient(to right, var(--teal), var(--success-light));color:#fff;letter-spacing:.3px;border-radius:30px;margin-bottom:12px;padding:4px 16px;font-size:.9rem;font-weight:500;display:inline-block}.task-card--locked{opacity:.55;cursor:not-allowed;filter:grayscale(40%);position:relative}.task-card--locked:after{content:"";border-radius:inherit;pointer-events:none;background:#ffffff59;position:absolute;inset:0}.task-card--locked:before{content:"";color:var(--gray-400);pointer-events:none;z-index:1;font-family:"Font Awesome 6 Free";font-size:.85rem;font-weight:900;position:absolute;top:12px;right:14px}.task-card--locked .resource-icon{pointer-events:none;opacity:.5}.lesson-tooltip{background:var(--gray-800);color:var(--text-inverse);z-index:9999;pointer-events:none;white-space:normal;border-radius:10px;max-width:240px;padding:8px 14px;font-size:.8rem;line-height:1.5;display:none;position:fixed;box-shadow:0 8px 24px #00000040}.extra-section{background:var(--info-soft);border:1px solid var(--gray-200);border-radius:24px;margin:50px 0 30px;padding:30px}.extra-section h2{color:var(--gray-800);align-items:center;gap:10px;margin-bottom:25px;font-size:1.8rem;display:flex}.extra-section h2 i{color:var(--info-dark)}.materials-list{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:15px;display:grid}.material-item{color:var(--gray-800);border:1px solid var(--gray-200);box-shadow:0 2px 8px var(--black-a02);background:#fff;border-radius:16px;align-items:center;gap:15px;padding:18px 22px;text-decoration:none;transition:all .2s;display:flex}.material-item:hover{box-shadow:0 10px 25px var(--black-a10);border-color:var(--info-dark);transform:translateY(-3px)}.material-item i{color:var(--danger);font-size:1.8rem}.material-item span{font-size:1rem;font-weight:500}.sticky-progress-bar{z-index:100;box-shadow:0 2px 8px var(--black-a10);background:#fff;border-radius:0 0 12px 12px;margin-bottom:20px;padding:10px 20px;position:sticky;top:0}.sticky-progress-bar .progress-label{color:var(--gray-600);justify-content:space-between;margin-bottom:5px;font-size:.9rem;display:flex}.sticky-progress-bar .progress-bar-container{background:var(--gray-200);border-radius:10px;height:6px;overflow:hidden}.sticky-progress-bar .progress-bar-fill{background:linear-gradient(to right, var(--teal), var(--success-light));width:0%;height:100%;transition:width .3s}.back-to-course{z-index:1000;position:fixed;top:20px;left:20px}.back-to-course-btn{background:var(--info-mid);color:#fff;border-radius:40px;align-items:center;gap:8px;padding:10px 18px;font-size:.95rem;font-weight:500;text-decoration:none;transition:all .3s;display:flex;box-shadow:0 4px 12px #2196f34d}.back-to-course-btn:hover{background:var(--info-mid);transform:translateY(-2px);box-shadow:0 6px 16px #2196f366}.back-to-course-right{z-index:1000;position:fixed;top:20px;right:20px}.back-to-course-btn-right{background:var(--text-inverse);min-height:40px;color:var(--gray-600);border:1px solid var(--border);box-shadow:0 4px 12px var(--slate-a08);border-radius:40px;justify-content:center;align-items:center;padding:10px 18px;font-size:.95rem;font-weight:600;text-decoration:none;transition:all .2s;display:inline-flex}.back-to-course-btn-right:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}.course-topic-nav__btn{border:1px solid var(--sky-btn-a22);background:var(--info-mid);min-height:42px;color:var(--text-inverse);font:inherit;cursor:pointer;box-shadow:0 4px 12px var(--sky-btn-a22);border-radius:999px;justify-content:center;align-items:center;gap:8px;padding:10px 18px;font-size:.95rem;font-weight:800;text-decoration:none;transition:transform .2s,background .2s,border-color .2s;display:inline-flex}.course-topic-nav__btn:hover{background:var(--info-mid);transform:translateY(-2px)}.course-topic-nav__btn--course{background:var(--text-inverse);color:var(--gray-600);border-color:var(--border);box-shadow:0 4px 12px var(--slate-a08)}.course-topic-nav__btn--course:hover{border-color:var(--accent);background:var(--text-inverse);color:var(--accent)}.course-section-list-page{width:min(100%,1152px);margin-inline:auto}.course-topic-legacy{padding:20px 0 60px}.course-topic-legacy .content-limited{max-width:820px;padding:0 20px}.course-topic-legacy .course-info{background:var(--text-inverse);color:var(--text);border:1px solid var(--border);box-shadow:none;border-radius:12px;margin-bottom:32px;padding:32px 36px}.course-topic-legacy .course-title{color:var(--text);letter-spacing:0;font-size:1.7rem;font-weight:600}.course-topic-legacy .course-subtitle{color:var(--text-muted);opacity:1;font-size:.95rem}.course-topic-legacy .meta-item{background:0 0;border:0;padding:0}.course-topic-legacy .meta-item i{color:var(--text-dim)}.course-topic-legacy .meta-item span{color:var(--text-muted)}.course-topic-legacy .sticky-progress-bar{background:var(--text-inverse);border:1px solid var(--border);border-radius:10px;padding:14px 20px;top:10px}.course-topic-legacy .course-topic-video-block{margin:30px 0}.course-topic-legacy .course-topic-video-block h2,.course-topic-legacy .course-topic-section h2,.course-topic-legacy .extra-section h2{border-bottom:2px solid var(--border);color:var(--text);margin:0 0 20px;padding-bottom:10px;font-size:1.3rem;font-weight:600}.course-topic-legacy .extra-section{background:var(--text-inverse);border:1px solid var(--border);border-radius:12px;margin:24px 0;padding:24px 28px}.course-topic-legacy .materials-list-1{gap:10px;display:grid}.course-materials-head{justify-content:space-between;align-items:flex-start;gap:14px;display:flex}.student-admin-material-upload{border:1px solid var(--accent-a20);background:var(--bg-accent);min-height:38px;color:var(--accent);cursor:pointer;border-radius:999px;align-items:center;gap:8px;padding:8px 12px;font-size:.86rem;font-weight:800;display:inline-flex}.student-admin-material-upload input{display:none}.course-topic-legacy .material-item-1{border:1px solid var(--border);background:var(--bg-soft);color:var(--text);border-radius:10px;align-items:flex-start;gap:12px;padding:14px 16px;display:flex}.course-topic-legacy .material-item-1 i{color:var(--accent);margin-top:3px}.course-topic-legacy .material-item-1--content{align-items:flex-start}.material-file-link{border:1px solid var(--border);background:var(--text-inverse);color:var(--text);border-radius:10px;align-items:center;gap:10px;margin:6px 0;padding:10px 12px;font-weight:700;text-decoration:none;display:inline-flex}.material-file-row{justify-content:space-between;align-items:center;gap:10px;width:100%;display:flex}.material-file-link i{color:var(--danger)}.course-access-warning{background:var(--warning-soft);border:1px solid var(--warning-border);color:var(--warning-text);border-radius:8px;align-items:center;gap:10px;margin:18px 0;padding:14px 16px;font-weight:700;display:flex}.course-topic-legacy .task{background:var(--text-inverse);border:2px solid var(--border);box-shadow:none;border-radius:12px;margin-bottom:16px;padding:24px 28px}.course-topic-legacy .task:hover{border-color:#238432d1;box-shadow:0 0 0 1px #23843233,0 5px 16px #2384321a}.course-access-request-block{border-top:1px solid var(--border);flex-wrap:wrap;align-items:center;gap:10px 14px;margin-top:16px;padding-top:16px;display:flex}.course-access-request-button{min-height:42px;color:var(--accent);font:inherit;cursor:pointer;background:#2e7a0012;border:1px solid #2e7a0057;border-radius:999px;justify-content:center;align-items:center;gap:9px;padding:0 20px;font-size:.88rem;font-weight:700;transition:background-color .2s,border-color .2s,color .2s;display:inline-flex}.course-access-request-button:hover:not(:disabled){background:var(--accent);border-color:var(--accent);color:var(--text-inverse)}.course-access-request-button.is-pending,.course-access-request-button:disabled{cursor:default;background:var(--gray-100);color:var(--gray-600);border-color:#64748b33}.course-access-request-note,.course-access-request-error{font-size:.78rem;line-height:1.35}.course-access-request-note{color:var(--text-muted)}.course-access-request-error{color:var(--danger,#b42318)}@media (max-width:600px){.topics-container{padding:22px 16px}.topics-container__subtitle{margin-bottom:26px;font-size:.94rem;line-height:1.45}.grade-course-list{gap:14px;margin:18px 0 24px}.grade-course-list .course-card{box-sizing:border-box;border-radius:14px;width:100%;margin-bottom:0;padding:18px 16px}.grade-course-list .course-card h3{overflow-wrap:anywhere;font-size:1.08rem;line-height:1.35}.grade-course-list .course-description{font-size:.88rem;line-height:1.45}.grade-course-list .course-stats{box-sizing:border-box;border-radius:13px;gap:8px 14px;width:100%;margin-bottom:12px;padding:9px 11px}.grade-course-list .course-stats span{font-size:.78rem}.grade-course-list .course-progress{gap:10px;padding-top:12px}.grade-course-list .course-progress span:first-child{min-width:0;font-size:.8rem}.grade-course-list .course-card--locked .course-arrow{min-width:68px;height:29px;padding:0 9px;font-size:.7rem}.course-access-request-block{align-items:stretch;margin-top:13px;padding-top:13px}.course-access-request-button{box-sizing:border-box;width:100%;min-height:44px;padding:0 14px;font-size:.84rem}.course-access-request-note,.course-access-request-error{text-align:center;width:100%}}@media (max-width:360px){.topics-container{padding:18px 10px}.grade-course-list .course-card{padding:16px 13px}.grade-course-list .course-progress{align-items:flex-start}}.task,.course-topic-legacy .task,.topic-task-list .task{transition:border-color .4s,box-shadow .4s}.task:hover,.topic-task-list .task:hover{border-color:#238432d1;box-shadow:0 0 0 1px #23843233,0 5px 16px #2384321a}.course-topic-legacy .answer-input-course.has-error,.topic-task-list .answer-input-course.has-error{border-color:#bf261ef2;box-shadow:0 0 0 3px #bf261e33}.course-topic-legacy .answer-input-course.has-success,.topic-task-list .answer-input-course.has-success{border-color:#2a8439e0;box-shadow:0 0 0 3px #2a843929}.course-topic-legacy .task-number-new{color:var(--text-inverse);background:var(--accent);border-radius:20px;padding:4px 18px}.course-topic-legacy .task-difficulty{color:var(--accent);background:0 0;padding:0}.course-topic-legacy .answer-section{background:0 0;padding:0}.course-topic-legacy .answer-input-course{border:2px solid var(--border);background:var(--bg);border-radius:8px}.course-topic-legacy .check-btn,.course-topic-legacy .solution-btn{color:var(--text);border:2px solid var(--border);box-shadow:none;background:0 0;border-radius:30px;padding:8px 24px}.course-topic-legacy .check-btn:hover,.course-topic-legacy .solution-btn:hover{background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}.course-topic-legacy .check-result.success{background:var(--success-soft);color:var(--grade-oge-dark);border:1px solid var(--success-light)}.course-topic-legacy .check-result.error{background:var(--danger-bg);color:var(--danger-dark);border:1px solid var(--danger-border)}.course-topic-legacy .solution{background:var(--bg);border:0;border-left:4px solid var(--accent);color:var(--text);border-radius:8px;margin-top:12px;padding:16px 20px;display:none}.course-topic-legacy .solution.visible{display:block}.nav-prev{z-index:1000;position:fixed;top:50%;left:20px;transform:translateY(-50%)}.nav-next{z-index:1000;position:fixed;top:50%;right:20px;transform:translateY(-50%)}.nav-button{color:#fff;border-radius:50%;justify-content:center;align-items:center;width:50px;height:50px;font-size:1.2rem;text-decoration:none;transition:all .3s;display:flex;position:relative}.nav-button.prev{background:var(--orange);box-shadow:0 4px 12px #ff98004d}.nav-button.next{background:var(--success-mid);box-shadow:0 4px 12px #4caf504d}.nav-button:hover{box-shadow:0 6px 16px var(--black-a20);transform:scale(1.1)}.nav-button:after{content:attr(data-tooltip);background:var(--gray-800);color:#fff;white-space:nowrap;opacity:0;visibility:hidden;pointer-events:none;border-radius:20px;padding:6px 12px;font-size:.8rem;transition:all .3s;position:absolute}.nav-prev .nav-button:after{left:60px}.nav-next .nav-button:after{right:60px}.nav-prev .nav-button:hover:after{opacity:1;visibility:visible;left:70px}.nav-next .nav-button:hover:after{opacity:1;visibility:visible;right:70px}.download-btn{background:var(--warning-mid);color:#fff;border-radius:50px;align-items:center;gap:12px;padding:14px 30px;font-size:1.1rem;font-weight:600;text-decoration:none;transition:all .3s;display:inline-flex;box-shadow:0 4px 15px #e67e224d}.download-btn:hover{background:var(--warning-mid);transform:translateY(-3px);box-shadow:0 8px 25px #e67e2266}.video-hint{color:var(--gray-500);text-align:center;margin-top:15px;font-size:.95rem;font-style:italic;line-height:1.5}.navigation-buttons{flex-wrap:wrap;gap:15px;margin:40px 0 20px;display:flex}.navigation-buttons .btn-primary{background:var(--info-dark);color:#fff;border:none;border-radius:40px;align-items:center;gap:10px;padding:12px 25px;font-weight:500;text-decoration:none;transition:all .2s;display:inline-flex}.navigation-buttons .btn-primary:hover{background:var(--info-dark);box-shadow:0 10px 20px var(--blue-a30);transform:translateY(-2px)}@media (max-width:768px){.course-card{padding:18px 20px}.course-card h3{font-size:1.2rem}.course-stats{border-radius:16px;flex-direction:column;gap:8px;width:100%}.course-arrow{width:36px;height:36px;font-size:1rem}.course-info{padding:25px}.course-title{font-size:1.8rem}.course-meta-stats{gap:12px}.meta-item{padding:6px 15px;font-size:.9rem}.extra-section{padding:20px}.material-item{padding:15px}.back-to-course{top:10px;left:10px}.back-to-course-btn{padding:8px 14px;font-size:.85rem}.nav-prev,.nav-next{top:auto;bottom:20px;transform:none}.nav-prev{left:20px}.nav-next{right:20px}.nav-button:after{display:none}.navigation-buttons{flex-direction:column}.navigation-buttons .btn-primary{justify-content:center}}@media (max-width:480px){.course-meta-stats{flex-direction:column;gap:10px}.meta-item{width:fit-content}.nav-button{width:45px;height:45px;font-size:1rem}.download-btn{padding:12px 25px;font-size:1rem}}.attendance-form-wrap{flex-direction:column;gap:20px;max-width:560px;margin:32px 0;display:flex}.attendance-select{border:1.5px solid var(--border);width:100%;color:var(--text);background:var(--bg-card);cursor:pointer;border-radius:12px;outline:none;padding:12px 16px;font-family:Inter,sans-serif;font-size:.95rem;transition:border-color .2s}.attendance-select:focus{border-color:var(--accent)}.attendance-input{border:1.5px solid var(--border);width:100%;color:var(--text);background:var(--bg-card);border-radius:12px;outline:none;padding:12px 16px;font-family:Inter,sans-serif;font-size:.95rem;transition:border-color .2s}.attendance-input:focus{border-color:var(--accent)}.attendance-lesson-info{background:var(--bg);border:1px solid var(--border);border-radius:12px;flex-direction:column;gap:10px;padding:16px 20px;display:flex}.attendance-lesson-info a{color:var(--accent);font-weight:500;text-decoration:none}.attendance-lesson-info a:hover{text-decoration:underline}.attendance-prev{border-top:1px solid var(--border);color:var(--text-muted);flex-wrap:wrap;align-items:center;gap:12px;padding-top:8px;font-size:.9rem;display:flex}.attendance-prev .correct{color:var(--success);font-weight:600}.attendance-prev .incorrect{color:var(--danger);font-weight:600}.student-admin-video-list{border:1px solid var(--blue-a12);background:var(--bg-muted);border-radius:14px;grid-column:1/-1;gap:12px;padding:14px;display:grid}.student-admin-video-list__head,.student-admin-video-row{align-items:center;gap:10px;display:flex}.student-admin-video-list__head{color:var(--gray-900);justify-content:space-between;font-weight:800}.student-admin-video-list__head button{border:1px solid var(--blue-a18);background:var(--text-inverse);color:var(--info-dark);font:inherit;cursor:pointer;border-radius:12px;align-items:center;gap:8px;padding:9px 12px;font-weight:800;display:inline-flex}.student-admin-video-list__head button:hover{background:var(--info-soft);border-color:var(--blue-a35)}.student-admin-video-row input{flex:320px}.student-admin-video-row input:nth-of-type(2){flex-basis:190px}.student-admin-hints-editor{gap:10px;display:grid}.student-admin-hints-editor__head{justify-content:space-between;align-items:center;gap:12px;display:flex}.student-admin-hints-editor__head button,.student-admin-hint-row__actions button,.student-admin-hint-row__actions label{border:1px solid var(--blue-a18);background:var(--text-inverse);color:var(--info-dark);font:inherit;cursor:pointer;border-radius:9px;padding:7px 10px;font-weight:700}.student-admin-hint-row{border:1px solid var(--blue-a12);background:var(--bg-muted);border-radius:12px;gap:8px;padding:10px;display:grid}.student-admin-hint-row textarea{min-height:76px}.student-admin-hint-row__actions{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.student-admin-hint-row img{object-fit:contain;border-radius:9px;max-width:min(100%,360px);max-height:220px;display:block}.student-admin-video-row label{white-space:nowrap;color:var(--gray-600);align-items:center;gap:7px;font-weight:700;display:inline-flex}.course-video-carousel{gap:12px;margin:18px 0 0;display:grid}.course-video-carousel__stage{border:1px solid var(--blue-a12);background:var(--text-inverse);border-radius:14px;padding:14px}.course-video-carousel__controls{justify-content:center;align-items:center;gap:14px;display:flex}.course-video-carousel__controls button{border:1px solid var(--blue-a18);background:var(--text-inverse);width:42px;height:42px;color:var(--info-dark);cursor:pointer;border-radius:999px;place-items:center;display:grid}.course-video-carousel__controls button:disabled{opacity:.4;cursor:default}.course-video-carousel__controls span{text-align:center;min-width:64px;color:var(--gray-500);font-weight:800}.student-admin-field{gap:7px;display:grid}.student-admin-field--full{grid-column:1/-1}.student-admin-field small{color:var(--gray-400);font-size:.84rem;font-weight:700}.student-photo-submission{border:1px solid var(--blue-a12);background:var(--bg-muted);border-radius:14px;gap:14px;margin:18px 0;padding:16px;display:grid}.student-photo-submission p{color:var(--gray-500);white-space:pre-wrap;overflow-wrap:anywhere;margin:4px 0 0}.student-photo-submission__history{gap:12px;display:grid}.student-photo-submission__result{border-top:1px solid var(--blue-a12);grid-template-columns:minmax(160px,290px) 1fr;align-items:center;gap:14px;padding-top:12px;display:grid}.student-photo-submission__attempt-head{color:var(--gray-500);grid-column:1/-1;justify-content:space-between;gap:12px;font-size:.82rem;display:flex}.student-photo-submission__images{grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:8px;display:grid}.student-photo-submission__result img{object-fit:cover;border:1px solid var(--blue-a14);border-radius:10px;width:100%;height:96px}.submission-status{background:var(--gray-200);width:fit-content;color:var(--gray-700);border-radius:999px;padding:5px 10px;font-size:.82rem;font-weight:800;display:inline-flex}.submission-status--pending{background:var(--status-pending-bg);color:var(--warning-text)}.submission-status--needs_fix{background:var(--status-needs-bg);color:var(--danger-text)}.submission-status--accepted{background:var(--status-accepted-bg);color:var(--success-dark)}.task-failure-effect{z-index:9999;pointer-events:none;contain:layout paint;position:fixed;inset:0;overflow:hidden}.task-failure-effect span{opacity:0;-webkit-user-select:none;user-select:none;pointer-events:none;will-change:transform, opacity;animation-name:task-effect-fall;animation-timing-function:cubic-bezier(.25,.46,.45,.94);animation-fill-mode:forwards;position:absolute;top:-70px;transform:translate(0,0)}@keyframes task-effect-fall{0%{opacity:0;transform:translateY(-50px)rotate(0)scale(.7)}12%{opacity:1}50%{transform:translate3d(var(--effect-drift-mid), 48vh, 0) rotate(var(--effect-rotation-mid)) scale(1.05)}85%{opacity:.95}to{opacity:0;transform:translate3d(var(--effect-drift), calc(100vh + 100px), 0) rotate(var(--effect-rotation)) scale(.9)}}.course-toast{z-index:10020;color:#9f2525;-webkit-backdrop-filter:blur(9px);backdrop-filter:blur(9px);background:#fff8f8fa;border:1px solid #be242433;border-radius:15px;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:11px;width:min(440px,100vw - 28px);padding:13px 14px;animation:.22s ease-out both course-toast-in;display:grid;position:fixed;top:22px;left:50%;transform:translate(-50%);box-shadow:0 18px 48px #26141433}.course-toast--success{color:#176b3b;background:#f7fffafa;border-color:#19875433}.course-toast>i{font-size:1.08rem}.course-toast span{overflow-wrap:anywhere;font-weight:800;line-height:1.35}.course-toast button{color:inherit;cursor:pointer;opacity:.72;background:0 0;border:0;padding:5px}@keyframes course-toast-in{0%{opacity:0;transform:translate(-50%,-14px)scale(.97)}to{opacity:1;transform:translate(-50%)scale(1)}}@media (max-width:640px){.student-admin-video-row,.student-admin-solution-media-row,.student-photo-submission__result{grid-template-columns:1fr;display:grid}.course-video-carousel__controls{justify-content:space-between}}.student-admin-task-modal{background:#141f188a;padding:24px 14px}.student-admin-task-modal .student-admin-panel{border:1px solid #d9e2dc;border-radius:16px;width:min(900px,100%);min-height:0;padding:20px;overflow:visible;box-shadow:0 24px 70px #12221838}.student-admin-task-modal .student-admin-panel__head{border-bottom:1px solid #e7ece8;min-height:42px;padding:0 48px 12px 0}.student-admin-task-modal .student-admin-panel__head strong{color:#26352b;font-size:1.05rem}.student-admin-task-modal .student-admin-panel__head button{width:36px;height:36px;box-shadow:none;border-width:1px}.student-admin-task-modal .student-admin-task-form{gap:13px}.student-admin-task-modal .student-admin-task-form__top{grid-template-columns:minmax(130px,.7fr) minmax(130px,.65fr) minmax(190px,1fr);gap:10px}.student-admin-task-modal .student-admin-topic-fields{background:#f8faf8;border:1px solid #e4eae6;border-radius:12px;gap:8px;padding:12px}.student-admin-task-modal .student-admin-topic-fields .student-admin-form__grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.student-admin-task-modal .student-admin-field,.student-admin-task-modal .student-admin-points-field{gap:5px}.student-admin-task-modal .student-admin-field>span,.student-admin-task-modal .student-admin-points-field>span{color:#526158;font-size:.78rem}.student-admin-task-modal .student-admin-form input,.student-admin-task-modal .student-admin-form select,.student-admin-task-modal .student-admin-form textarea{border-color:#d5ded8;border-radius:9px;min-height:40px;padding:9px 11px}.student-admin-task-modal .student-admin-form textarea{min-height:96px}.student-admin-task-modal .student-admin-field--compact{width:min(360px,100%)}.student-admin-task-modal .student-admin-image-line{border-radius:9px;min-height:42px;padding-block:5px}.student-admin-task-modal .student-admin-hints-editor{border-top:1px solid #edf1ee;padding-top:13px}.student-admin-task-modal .student-admin-toggle{background:#f8faf8;border:1px solid #e2e9e4;border-radius:10px;padding:8px 10px;position:relative}.student-admin-task-modal .student-admin-toggle input{margin:0;padding:0;width:1px!important;height:1px!important;min-height:0!important}.student-admin-task-modal .student-admin-form button[type=submit]{min-height:44px;box-shadow:none;border-radius:10px;margin-top:2px}@media (max-width:720px){.student-admin-task-modal{padding:8px}.student-admin-task-modal .student-admin-panel{border-radius:12px;padding:14px}.student-admin-task-modal .student-admin-task-form__top,.student-admin-task-modal .student-admin-topic-fields .student-admin-form__grid{grid-template-columns:1fr}}.task-latex-svg{object-fit:contain;object-position:left center;width:auto;max-width:100%;height:auto;image-rendering:-webkit-optimize-contrast;shape-rendering:geometricprecision;text-rendering:geometricprecision;margin:14px 0;display:block}.task-latex-loading{color:#0000;background:linear-gradient(90deg,#f4f7f4 25%,#e9f0ea 50%,#f4f7f4 75%) 0 0/200% 100%;border-radius:12px;width:min(100%,420px);min-height:72px;margin:14px 0;animation:1.2s ease-in-out infinite task-latex-loading}@keyframes task-latex-loading{0%{background-position:200% 0}to{background-position:-200% 0}}.task-hints__button,.course-topic-legacy .task-hints__button,.topic-task-list .task-hints__button{color:#334155;background:#fff;border:1.5px solid #d0d8ce;border-radius:999px;min-height:0;padding:8px 14px;font-weight:600;line-height:1.4;transition:all .18s;box-shadow:0 1px 3px #0000000d}.task-hints__button:hover,.course-topic-legacy .task-hints__button:hover,.topic-task-list .task-hints__button:hover{color:#9a5700;background:#fff8e8;border-color:#d9a300;box-shadow:0 2px 8px #d9a3002e}.task-hints__button:hover,.task-hints__button:focus-visible,.course-topic-legacy .task-hints__button:hover,.course-topic-legacy .task-hints__button:focus-visible,.topic-task-list .task-hints__button:hover,.topic-task-list .task-hints__button:focus-visible{color:#9a5700;background:#fff3d2;border-color:#d9a300}.task-hints__button,.course-topic-legacy .task-hints__button,.topic-task-list .task-hints__button,.check-btn,.course-topic-legacy .check-btn,.topic-task-list .check-btn,.solution-btn,.course-topic-legacy .solution-btn,.topic-task-list .solution-btn{box-sizing:border-box;text-align:center;border-radius:30px;justify-content:center;justify-self:start;align-items:center;gap:8px;width:220px;max-width:100%;min-height:44px;padding:11px 20px;line-height:1.2;display:inline-flex}.task-report-trigger{color:var(--text-muted);font:inherit;cursor:pointer;background:0 0;border:0;justify-self:end;padding:4px 0;font-size:.78rem;transition:color .18s}.task-report-trigger:hover,.task-report-trigger:focus-visible{color:var(--accent-dark)}.site-report-trigger{border:1px solid var(--green-dark-a18);background:0 0;border-radius:999px;justify-self:center;align-items:center;margin:10px auto 0;padding:7px 12px;display:inline-flex}.standalone-report{z-index:120;position:fixed;bottom:18px;right:22px}.standalone-report .site-report-trigger{background:var(--text-inverse);margin:0;box-shadow:0 8px 24px #1423141f}.task-report-modal{z-index:1000;background:#16231647;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.task-report-dialog{border:1px solid var(--green-dark-a14);background:var(--text-inverse);border-radius:18px;width:min(620px,100%);padding:22px;box-shadow:0 18px 50px #14231438}.task-report-dialog__head{justify-content:space-between;align-items:flex-start;gap:18px;margin-bottom:18px;display:flex}.task-report-dialog__head strong{font-size:1.1rem;display:block}.task-report-dialog__head p{color:var(--text-muted);margin:5px 0 0;font-size:.88rem}.task-report-dialog__close{color:var(--text-muted);cursor:pointer;background:0 0;border:0;font-size:1.1rem}.task-report-dialog form{gap:14px;display:grid}.task-report-dialog label{color:var(--text-muted);gap:7px;font-size:.85rem;font-weight:700;display:grid}.task-report-dialog select{border:1px solid var(--green-dark-a22);background:var(--bg);width:100%;min-height:42px;color:var(--text);font:inherit;border-radius:10px;padding:9px 11px}.task-report-dialog textarea{resize:vertical;border:1px solid var(--green-dark-a22);background:var(--bg);width:100%;color:var(--text);font:inherit;border-radius:12px;padding:12px}.task-report-dialog textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-a12);outline:none}.task-report-submit,.task-report-success button{background:var(--accent);color:var(--text-inverse);font:inherit;cursor:pointer;border:0;border-radius:12px;justify-self:end;padding:11px 18px;font-weight:800}.task-report-submit:disabled{opacity:.55;cursor:not-allowed}.task-report-error{color:var(--danger-text)}.task-report-success{text-align:center;color:var(--green-success-text);justify-items:center;gap:12px;display:grid}.task-report-success i{font-size:2rem}.task-report-success p{margin:0}.task-report-context{border:1px solid var(--green-dark-a14);background:var(--bg);border-radius:12px;gap:10px;padding:13px;display:grid}.task-report-context>strong{font-size:.9rem}.task-report-context>small{color:var(--text-muted);font-size:.78rem}.task-report-context__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.error-review-page{max-width:920px;margin:0 auto;padding:18px 0 52px}.error-review-page__head{justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:24px;display:flex}.error-review-page__head h2{margin:3px 0 7px}.error-review-page__head p:not(.eyebrow){color:var(--text-muted);margin:0}.error-review-page__head>a,.error-review-card>a{color:var(--accent-dark);font-weight:800;text-decoration:none}.error-review-list{gap:12px;display:grid}.error-review-card__meta{color:var(--text-muted);justify-content:space-between;gap:12px;font-size:.8rem;display:flex}.error-review-answer{border:1px solid var(--green-dark-a22);background:var(--bg);width:min(360px,100%);color:var(--text);font:inherit;border-radius:10px;padding:10px 12px}.error-review-options{gap:8px;margin:10px 0 14px;display:grid}.error-review-options label{color:var(--text);align-items:center;gap:8px;display:flex}.error-review-solve{background:var(--accent);color:var(--text-inverse);font:inherit;cursor:pointer;border:0;border-radius:999px;margin-top:14px;padding:10px 16px;font-weight:700}.error-review-solve:disabled{opacity:.55;cursor:not-allowed}.error-review-feedback{color:var(--danger-text);margin-top:8px;display:block}.error-review-photo-note{color:var(--text-muted);margin:10px 0;font-size:.88rem}.error-review-empty{border:1px dashed var(--green-dark-a18);color:var(--text-muted);text-align:center;border-radius:16px;justify-items:center;gap:8px;padding:54px 18px;display:grid}.error-review-empty i{color:var(--accent);font-size:2rem}.error-review-empty strong{color:var(--text)}.error-review-task-link{width:fit-content;color:var(--accent-dark);align-items:center;gap:7px;font-weight:800;text-decoration:none;display:inline-flex}.error-review-task-link:hover{text-underline-offset:3px;text-decoration:underline}@media (max-width:640px){.task-report-modal{padding:10px}.task-report-dialog{border-radius:14px;padding:16px}.task-report-context__grid{grid-template-columns:1fr}}.task-hints__button,.course-topic-legacy .task-hints__button,.topic-task-list .task-hints__button{white-space:nowrap}.course-section-timer-badge{color:#0d47a1;background:linear-gradient(135deg,#e3f2fd 0%,#bbdefb 100%);border:1px solid #90caf9;border-radius:10px;align-items:center;gap:10px;margin-bottom:16px;padding:10px 18px;font-size:1.05rem;font-weight:500;display:inline-flex;box-shadow:0 2px 8px #0d47a11f}.course-section-timer-badge i{color:#1976d2;font-size:1.25rem}.course-section-timer-badge--danger{color:#b71c1c;background:linear-gradient(135deg,#ffebee 0%,#ffcdd2 100%);border-color:#ef9a9a;animation:1s ease-in-out infinite timer-pulse;box-shadow:0 2px 8px #b71c1c26}.course-section-timer-badge--danger i{color:#d32f2f}@keyframes timer-pulse{0%,to{transform:scale(1)}50%{transform:scale(1.02)}}.course-section-timer-badge{border-radius:12px;align-items:center;gap:10px;margin-bottom:16px;padding:10px 18px;font-size:1.05rem;font-weight:500;transition:all .3s cubic-bezier(.4,0,.2,1);display:inline-flex}.course-section-timer-badge--success{color:#1b5e20;background:linear-gradient(135deg,#e8f5e9 0%,#c8e6c9 100%);border:1px solid #a5d6a7;box-shadow:0 2px 8px #1b5e201f}.course-section-timer-badge--success i{color:#2e7d32;font-size:1.2rem}.course-section-timer-badge--warning{color:#e65100;background:linear-gradient(135deg,#fff3e0 0%,#ffe0b2 100%);border:1px solid #ffcc80;box-shadow:0 2px 8px #e6510024}.course-section-timer-badge--warning i{color:#f57c00;font-size:1.2rem}.course-section-timer-badge--danger{color:#b71c1c;background:linear-gradient(135deg,#ffebee 0%,#ffcdd2 100%);border:1px solid #ef9a9a;animation:1s ease-in-out infinite timer-pulse;box-shadow:0 2px 8px #b71c1c2e}.course-section-timer-badge--danger i{color:#d32f2f;font-size:1.2rem}.course-section-timer-floating{z-index:999;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);cursor:default;border-radius:9999px;align-items:center;gap:9px;padding:10px 18px;font-family:IBM Plex Mono,ui-monospace,monospace;font-size:1.15rem;font-weight:700;transition:transform .2s,box-shadow .2s;animation:.35s cubic-bezier(.34,1.56,.64,1) timer-float-in;display:flex;position:fixed;top:80px;right:24px;box-shadow:0 10px 30px -4px #00000038,0 3px 10px #0000001a}.course-section-timer-floating:hover{transform:translateY(-2px)scale(1.04);box-shadow:0 14px 34px -4px #00000042,0 4px 12px #0000001f}.course-section-timer-floating--success{color:#1b5e20;background:#e8f5e9f5;border:1.5px solid #81c784}.course-section-timer-floating--success i{color:#2e7d32}.course-section-timer-floating--warning{color:#e65100;background:#fff3e0f5;border:1.5px solid #ffb74d}.course-section-timer-floating--warning i{color:#f57c00}.course-section-timer-floating--danger{color:#b71c1c;background:#ffebeef5;border:1.5px solid #e57373;animation:1s ease-in-out infinite timer-float-pulse}.course-section-timer-floating--danger i{color:#d32f2f}@keyframes timer-float-in{0%{opacity:0;transform:translateY(-20px)scale(.8)}to{opacity:1;transform:translateY(0)scale(1)}}@keyframes timer-float-pulse{0%,to{transform:scale(1);box-shadow:0 10px 30px -4px #b71c1c59}50%{transform:scale(1.06);box-shadow:0 14px 36px -2px #b71c1c80}}.lesson-deadlines-panel{color:#14181a;text-align:left;background:#fff;border:1px solid #edf0ee;border-radius:16px;width:95%;max-width:820px;font-family:Manrope,system-ui,-apple-system,sans-serif;animation:.25s cubic-bezier(.16,1,.3,1) modal-rise;overflow:hidden;box-shadow:0 24px 60px -20px #14181a47,0 2px 8px #14181a0f}@keyframes modal-rise{0%{opacity:0;transform:translateY(12px)scale(.97)}to{opacity:1;transform:translateY(0)scale(1)}}.lesson-deadlines-panel .student-admin-panel__head{border-bottom:none;justify-content:space-between;align-items:flex-start;gap:16px;padding:24px 26px 18px;display:flex}.lesson-deadlines-panel .student-admin-panel__head .headings{flex-direction:column;gap:4px;display:flex}.lesson-deadlines-panel .student-admin-panel__head strong{letter-spacing:-.02em;color:#0f172a;font-size:21px;font-weight:800}.lesson-deadlines-panel .student-admin-panel__head .lesson-name{color:#475569;font-size:14px;font-weight:600}.lesson-deadlines-panel .student-admin-panel__head button{color:#334155;cursor:pointer;background:#f1f5f9;border:1.5px solid #cbd5e1;border-radius:50%;flex:none;justify-content:center;align-items:center;width:38px;height:38px;font-size:17px;transition:all .18s;display:flex;box-shadow:0 2px 4px #0000000f}.lesson-deadlines-panel .student-admin-panel__head button:hover{color:#dc2626;background:#fee2e2;border-color:#fca5a5;transform:scale(1.1);box-shadow:0 4px 8px #dc262626}.lesson-deadlines-panel .student-admin-panel__head button:active{transform:scale(.92)}.lesson-deadlines-panel .general-access{padding:0 22px 20px}.lesson-deadlines-panel .general-access__eyebrow{letter-spacing:.09em;text-transform:uppercase;color:#93a19c;align-items:center;gap:7px;margin-bottom:10px;font-size:10.5px;font-weight:700;display:flex}.lesson-deadlines-panel .general-access__eyebrow i{color:#2e7a00;font-size:11px}.lesson-deadlines-panel .general-access__grid{grid-template-columns:1fr 1fr;gap:10px;display:grid}.lesson-deadlines-panel .deadlines-field{background:#f1f3f2;border:1px solid #0000;border-radius:8px;flex-direction:column;gap:3px;padding:5px 10px 6px;transition:border-color .15s,background .15s;display:flex}.lesson-deadlines-panel .deadlines-field:focus-within{background:#fff;border-color:#2e7a00}.lesson-deadlines-panel .deadlines-field span{color:#5b6461;font-size:10.5px;font-weight:600}.lesson-deadlines-panel .deadlines-field input{color:#14181a;background:0 0;border:none;width:100%;padding:0;font-family:IBM Plex Mono,ui-monospace,monospace;font-size:13px}.lesson-deadlines-panel .deadlines-field input:focus{outline:none}.lesson-deadlines-panel .deadlines-field input::placeholder{color:#93a19c;font-family:inherit}.lesson-deadlines-panel .general-access__status{color:#1e5200;align-items:center;gap:7px;margin-top:10px;font-size:11.5px;font-weight:600;display:flex}.lesson-deadlines-panel .general-access__status.is-closed{color:#c0392b}.lesson-deadlines-panel .general-access__status .dot{background:#2e7a00;border-radius:50%;width:6px;height:6px;box-shadow:0 0 0 3px #eef5e6}.lesson-deadlines-panel .general-access__status.is-closed .dot{background:#c0392b;box-shadow:0 0 0 3px #fbeae7}.lesson-deadlines-panel .rail-wrap{padding-left:22px;position:relative}.lesson-deadlines-panel .rail-wrap:before{content:"";background:#e3e7e4;width:1px;height:100%;position:absolute;top:0;left:34px}.lesson-deadlines-panel .accordion-toggle{cursor:pointer;text-align:left;background:0 0;border:none;border-top:1px solid #edf0ee;align-items:center;gap:11px;width:100%;padding:14px 22px 14px 0;font-family:inherit;display:flex;position:relative}.lesson-deadlines-panel .accordion-toggle__node{color:#5b6461;z-index:1;background:#fff;border:1.5px solid #e3e7e4;border-radius:50%;flex:none;justify-content:center;align-items:center;width:25px;height:25px;font-size:10px;transition:transform .25s cubic-bezier(.4,0,.2,1),border-color .2s,color .2s,background .2s;display:flex}.lesson-deadlines-panel .accordion-toggle[aria-expanded=true] .accordion-toggle__node{color:#2e7a00;background:#eef5e6;border-color:#2e7a00;transform:rotate(90deg)}.lesson-deadlines-panel .accordion-toggle__text{flex-direction:column;flex:1;gap:1px;display:flex}.lesson-deadlines-panel .accordion-toggle__text strong{color:#14181a;font-size:13.5px;font-weight:700}.lesson-deadlines-panel .accordion-toggle__text small{color:#93a19c;font-size:11px;font-weight:500}.lesson-deadlines-panel .accordion-toggle__count{color:#1e5200;background:#eef5e6;border-radius:99px;flex:none;padding:3px 8px;font-family:IBM Plex Mono,ui-monospace,monospace;font-size:11px;font-weight:600}.lesson-deadlines-panel .accordion-body{grid-template-rows:0fr;transition:grid-template-rows .3s cubic-bezier(.4,0,.2,1);display:grid}.lesson-deadlines-panel .accordion-body.is-open{grid-template-rows:1fr}.lesson-deadlines-panel .accordion-body__inner{overflow:hidden}.lesson-deadlines-panel .deadlines-form{flex-direction:column;gap:10px;padding:4px 22px 18px;display:flex}.lesson-deadlines-panel .deadlines-form__grid{grid-template-columns:1fr 1fr;gap:10px;display:grid}.lesson-deadlines-panel .deadlines-form button[type=submit]{color:#fff;cursor:pointer;letter-spacing:-.01em;background:#2e7a00;border:none;border-radius:10px;width:100%;margin-top:2px;padding:12px;font-family:inherit;font-size:13.5px;font-weight:700;transition:background .15s,transform .1s}.lesson-deadlines-panel .deadlines-form button[type=submit]:active{transform:scale(.98)}.lesson-deadlines-panel .deadlines-access-list{flex-direction:column;gap:8px;padding:2px 22px 22px;display:flex}.lesson-deadlines-panel .deadlines-access-list__label{letter-spacing:.08em;text-transform:uppercase;color:#93a19c;margin:2px 0;font-size:10.5px;font-weight:700}.lesson-deadlines-panel .deadlines-access-list>div.override-item{background:#f1f3f2;border:1px solid #edf0ee;border-radius:10px;align-items:center;gap:10px;padding:10px 10px 10px 30px;animation:.25s both rise;display:flex;position:relative}.lesson-deadlines-panel .deadlines-access-list>div.override-item:before{content:"";background:#2e7a00;border-radius:50%;width:7px;height:7px;position:absolute;top:50%;left:12px;transform:translateY(-50%);box-shadow:0 0 0 3px #eef5e6}.lesson-deadlines-panel .deadlines-access-list .info{flex-direction:column;flex:1;gap:2px;min-width:0;display:flex}.lesson-deadlines-panel .deadlines-access-list span.user-name{color:#14181a;white-space:nowrap;text-overflow:ellipsis;font-size:13px;font-weight:700;overflow:hidden}.lesson-deadlines-panel .deadlines-access-list small.meta-info{color:#5b6461;font-family:IBM Plex Mono,ui-monospace,monospace;font-size:11px}.lesson-deadlines-panel .deadlines-access-list button.delete-btn{color:#93a19c;cursor:pointer;background:0 0;border:none;border-radius:8px;flex:none;justify-content:center;align-items:center;width:28px;height:28px;font-size:12px;transition:background .15s,color .15s;display:flex}.lesson-deadlines-panel .deadlines-access-list button.delete-btn:hover{color:#c0392b;background:#fbeae7}.lesson-deadlines-panel .deadlines-empty{text-align:center;color:#93a19c;border:1px dashed #e3e7e4;border-radius:10px;padding:14px 12px;font-size:12px}.student-admin-user-search-wrap{flex-direction:column;gap:5px;width:100%;display:flex}.student-admin-user-search-label{color:#5b6461;letter-spacing:.02em;font-size:11px;font-weight:700}.student-admin-user-search{width:100%;position:relative}.student-admin-user-search input{color:#14181a;background:#f8faf9;border:1.5px solid #e3e7e4;border-radius:10px;width:100%;padding:12px 14px 12px 38px;font-family:inherit;font-size:14px;font-weight:600;transition:all .2s;box-shadow:inset 0 1px 3px #0000000a}.student-admin-user-search:before{content:"";color:#2e7a00;pointer-events:none;z-index:2;font-family:"Font Awesome 6 Free";font-size:13px;font-weight:900;position:absolute;top:50%;left:14px;transform:translateY(-50%)}.student-admin-user-search input:focus{background:#fff;border-color:#2e7a00;outline:none;box-shadow:0 0 0 3px #0d737726}.student-admin-user-search input::placeholder{color:#93a19c;font-size:13px;font-weight:400}.student-admin-user-suggest{z-index:100;background:#fff;border:1.5px solid #2e7a00;border-radius:12px;flex-direction:column;gap:4px;max-height:260px;padding:6px;animation:.2s modal-rise;display:flex;position:absolute;top:calc(100% + 6px);left:0;right:0;overflow-y:auto;box-shadow:0 18px 40px -6px #0d737740,0 6px 16px #0000001a}.student-admin-user-suggest-searching{color:#2e7a00;align-items:center;gap:8px;padding:10px 14px;font-size:12px;font-weight:600;display:flex}.student-admin-user-suggest button{color:#14181a;text-align:left;cursor:pointer;background:#f8faf9;border:1.5px solid #0000;border-radius:9px;flex-direction:column;gap:3px;padding:9px 13px;transition:all .15s;display:flex}.student-admin-user-suggest .user-suggest-main{align-items:baseline;gap:8px;display:flex}.student-admin-user-suggest .user-suggest-login{color:#2e7a00;font-size:14px;font-weight:800}.student-admin-user-suggest .user-suggest-name{color:#1e293b;font-size:13px;font-weight:600}.student-admin-user-suggest .user-suggest-email{color:#64748b;align-items:center;gap:5px;font-family:IBM Plex Mono,monospace;font-size:11.5px;display:inline-flex}.student-admin-user-suggest button:hover,.student-admin-user-suggest button.active{background:#eef5e6;border-color:#2e7a00;transform:translate(3px);box-shadow:0 2px 8px #0d73772e}.student-admin-user-suggest button:hover .user-suggest-login,.student-admin-user-suggest button.active .user-suggest-login{color:#1a4400}.student-admin-user-suggest button:hover .user-suggest-name,.student-admin-user-suggest button.active .user-suggest-name{color:#0f172a}.student-admin-user-suggest button:hover .user-suggest-email,.student-admin-user-suggest button.active .user-suggest-email{color:#1e5200;font-weight:600}.deadlines-access-list__head{justify-content:space-between;align-items:center;gap:12px;margin-bottom:6px;display:flex}.deadlines-list-search{align-items:center;display:flex;position:relative}.deadlines-list-search i.fa-search{color:#94a3b8;pointer-events:none;font-size:11px;position:absolute;left:10px}.deadlines-list-search input{color:#1e293b;background:#f8fafc;border:1px solid #e2e8f0;border-radius:7px;width:180px;padding:5px 24px 5px 28px;font-family:inherit;font-size:12px;transition:all .15s}.deadlines-list-search input:focus{background:#fff;border-color:#2e7a00;outline:none;width:210px}.deadlines-list-search button{color:#94a3b8;cursor:pointer;background:0 0;border:none;justify-content:center;align-items:center;padding:0;font-size:11px;display:flex;position:absolute;right:6px}.deadlines-list-search button:hover{color:#ef4444}.deadlines-show-more{color:#64748b;justify-content:space-between;align-items:center;padding:6px 4px;font-size:12px;display:flex}.deadlines-show-more button{color:#2e7a00;cursor:pointer;background:#eef5e6;border:none;border-radius:6px;padding:4px 10px;font-size:12px;font-weight:700;transition:all .15s}.deadlines-show-more button:hover{color:#fff;background:#2e7a00}.lesson-deadlines-panel{font-size:14.5px;max-width:820px!important}.lesson-deadlines-panel .student-admin-panel__head strong{font-weight:800;font-size:22px!important}.lesson-deadlines-panel .student-admin-panel__head .lesson-name{color:#475569;font-size:15px!important}.lesson-deadlines-panel .general-access__eyebrow{letter-spacing:.05em;color:#2e7a00;font-weight:700;font-size:13px!important}.lesson-deadlines-panel .deadlines-field span{color:#475569;margin-bottom:0;font-weight:700;line-height:1.2;font-size:12px!important}.lesson-deadlines-panel .deadlines-field input{line-height:1.2;padding:2px 0!important;font-size:13.5px!important}.lesson-deadlines-panel .general-access__status{padding:8px 14px;font-size:14px!important}.lesson-deadlines-panel .accordion-toggle__text strong{font-size:17px!important}.lesson-deadlines-panel .accordion-toggle__text small{color:#64748b;font-size:13.5px!important}.lesson-deadlines-panel .student-admin-user-search-label span{color:#334155;font-weight:700;font-size:13.5px!important}.lesson-deadlines-panel .student-admin-user-search input{padding:8px 14px 8px 40px!important;font-size:14.5px!important}.lesson-deadlines-panel .deadlines-form button[type=submit]{background:#2e7a00;padding:11px 20px;font-weight:700;font-size:15.5px!important}.lesson-deadlines-panel .deadlines-form button[type=submit]:hover{background:#235e00}.lesson-deadlines-panel .deadlines-access-list__label{color:#1e293b;font-weight:700;font-size:15px!important}.lesson-deadlines-panel .deadlines-access-list .user-name-row{flex-wrap:wrap;align-items:baseline;gap:8px;display:flex}.lesson-deadlines-panel .deadlines-access-list span.user-name{color:#0f172a;font-weight:700;font-size:15px!important}.lesson-deadlines-panel .deadlines-access-list span.user-full-name{color:#475569;font-weight:500;font-size:14px!important}.lesson-deadlines-panel .deadlines-access-list span.user-email{color:#94a3b8;font-family:IBM Plex Mono,monospace;font-size:12px!important}.lesson-deadlines-panel .deadlines-access-list small.meta-info{color:#64748b;margin-top:2px;font-size:13.5px!important}.lesson-deadlines-panel .deadlines-list-search input{width:220px;padding:6px 26px 6px 30px;font-size:13.5px!important}.lesson-deadlines-panel .deadlines-list-search input:focus{width:260px}.sticky-header-row{z-index:100;align-items:stretch;gap:12px;margin-bottom:20px;display:flex;position:sticky;top:0}.sticky-header-row .sticky-progress-bar{min-width:0;box-shadow:0 2px 8px var(--black-a10);background:#fff;border-radius:0 0 12px 12px;flex:1;margin-bottom:0;padding:10px 20px;position:static}.sticky-lesson-timer{box-shadow:0 2px 8px var(--black-a10);white-space:nowrap;background:#fff;border:1.5px solid #0000;border-radius:0 0 12px 12px;flex:none;align-items:center;gap:8px;padding:10px 18px;font-family:IBM Plex Mono,ui-monospace,monospace;font-size:14px;font-weight:600;transition:all .25s cubic-bezier(.4,0,.2,1);display:flex}.sticky-lesson-timer i{font-size:14px}.sticky-lesson-timer strong{font-weight:700}.sticky-lesson-timer.is-scrolled{padding:8px 14px;font-size:13.5px;box-shadow:0 4px 12px #0000001f}.sticky-lesson-timer.is-scrolled i{font-size:13px}.sticky-lesson-timer--success{color:#166534;background:#f0fdf4;border-color:#86efac}.sticky-lesson-timer--success i{color:#15803d}.sticky-lesson-timer--warning{color:#92400e;background:#fffbeb;border-color:#fcd34d}.sticky-lesson-timer--warning i{color:#d97706}.sticky-lesson-timer--danger{color:#991b1b;background:#fef2f2;border-color:#fca5a5;animation:1s ease-in-out infinite timer-pulse}.sticky-lesson-timer--danger i{color:#dc2626}.student-admin-panel{background:#fff!important;border:1.5px solid #e2e8f0!important;border-radius:18px!important;flex-direction:column!important;gap:0!important;padding:0!important;display:flex!important;overflow:hidden!important;box-shadow:0 20px 50px -10px #00000026,0 0 0 1px #00000005!important}.student-admin-panel .student-admin-panel__head{border-bottom:1px solid #f1f5f9!important;justify-content:space-between!important;align-items:flex-start!important;gap:16px!important;min-height:auto!important;padding:22px 24px 18px!important;display:flex!important;position:static!important}.student-admin-panel .student-admin-panel__head .headings{flex-direction:column;gap:4px;display:flex}.student-admin-panel .student-admin-panel__head strong{letter-spacing:-.02em!important;color:#0f172a!important;font-family:inherit!important;font-size:21px!important;font-weight:800!important}.student-admin-panel .student-admin-panel__head button{color:#334155!important;cursor:pointer!important;background:#f1f5f9!important;border:1.5px solid #cbd5e1!important;border-radius:50%!important;flex:none!important;justify-content:center!important;align-items:center!important;width:38px!important;height:38px!important;font-size:17px!important;transition:all .18s!important;display:flex!important;position:static!important;box-shadow:0 2px 4px #0000000f!important}.student-admin-panel .student-admin-panel__head button:hover{color:#dc2626!important;background:#fee2e2!important;border-color:#fca5a5!important;transform:scale(1.1)!important;box-shadow:0 4px 8px #dc262626!important}.student-admin-panel .student-admin-panel__head button:active{transform:scale(.92)!important}.student-admin-panel .student-admin-form{flex-direction:column!important;gap:16px!important;padding:22px 24px 26px!important;display:flex!important}.student-admin-panel .student-admin-form input,.student-admin-panel .student-admin-form select,.student-admin-panel .student-admin-form textarea{color:#1e293b!important;background:#f8fafc!important;border:1.5px solid #e2e8f0!important;border-radius:10px!important;padding:10px 14px!important;font-family:inherit!important;font-size:14.5px!important;transition:all .15s!important}.student-admin-panel .student-admin-form input:focus,.student-admin-panel .student-admin-form select:focus,.student-admin-panel .student-admin-form textarea:focus{background:#fff!important;border-color:#2e7a00!important;outline:none!important;box-shadow:0 0 0 3px #2e7a001f!important}.student-admin-panel .student-admin-form button[type=submit]{color:#fff!important;cursor:pointer!important;background:#2e7a00!important;border:none!important;border-radius:10px!important;width:100%!important;margin-top:4px!important;padding:12px 22px!important;font-size:15.5px!important;font-weight:700!important;transition:all .15s!important;box-shadow:0 4px 12px #2e7a0033!important}.student-admin-panel .student-admin-form button[type=submit]:hover{background:#235e00!important;transform:translateY(-1px)!important;box-shadow:0 6px 16px #2e7a0047!important}.student-admin-panel .student-admin-form button[type=submit]:active{transform:scale(.98)!important}.admin-field-styled{flex-direction:column!important;gap:5px!important;width:100%!important;display:flex!important}.admin-field-styled>span{color:#334155!important;letter-spacing:.01em!important;font-size:12.5px!important;font-weight:700!important}.styled-admin-form input,.styled-admin-form textarea,.styled-admin-form select{color:#1e293b!important;box-sizing:border-box!important;background:#f8fafc!important;border:1.5px solid #e2e8f0!important;border-radius:9px!important;width:100%!important;min-height:42px!important;padding:9px 13px!important;font-family:inherit!important;font-size:14px!important;transition:all .15s!important}.styled-admin-form textarea{resize:vertical!important;min-height:76px!important;line-height:1.45!important}.styled-admin-form input:focus,.styled-admin-form textarea:focus,.styled-admin-form select:focus{background:#fff!important;border-color:#2e7a00!important;outline:none!important;box-shadow:0 0 0 3px #2e7a001f!important}.admin-segmented-control{background:#f1f5f9;border:1.5px solid #e2e8f0;border-radius:10px;grid-template-columns:1fr 1fr;gap:4px;padding:4px;display:grid}.segmented-btn{color:#64748b;cursor:pointer;background:0 0;border:none;border-radius:7px;justify-content:center;align-items:center;gap:8px;padding:8px 14px;font-family:inherit;font-size:13.5px;font-weight:600;transition:all .15s;display:inline-flex}.segmented-btn i{font-size:13px}.segmented-btn:hover{color:#1e293b}.segmented-btn.active{color:#2e7a00;background:#fff;font-weight:700;box-shadow:0 2px 6px #00000014}.segmented-btn.active i{color:#2e7a00}.student-admin-video-list{background:#f8fafc;border:1.5px solid #e2e8f0;border-radius:10px;flex-direction:column;gap:8px;padding:12px 14px;display:flex}.student-admin-video-list__head{justify-content:space-between;align-items:center;gap:10px;display:flex}.video-list-title{color:#334155;font-size:12.5px;font-weight:700}.video-add-btn{color:#2e7a00;cursor:pointer;background:#eef5e6;border:1px solid #bbf7d0;border-radius:6px;align-items:center;gap:6px;padding:4px 10px;font-family:inherit;font-size:12px;font-weight:700;transition:all .15s;display:inline-flex}.video-add-btn:hover{color:#fff;background:#2e7a00;border-color:#2e7a00}.student-admin-video-empty{color:#94a3b8;background:#fff;border:1.5px dashed #cbd5e1;border-radius:8px;justify-content:center;align-items:center;gap:8px;padding:14px;font-size:13px;display:flex}.student-admin-video-items{flex-direction:column;gap:6px;display:flex}.student-admin-video-card{background:#fff;border:1px solid #e2e8f0;border-radius:8px;align-items:center;gap:10px;padding:4px 8px 4px 12px;display:flex}.video-card-icon{color:#2e7a00;flex:none;font-size:12px}.student-admin-video-card input{flex:1;box-shadow:none!important;background:0 0!important;border:none!important;min-height:auto!important;padding:6px 0!important;font-size:13.5px!important}.video-delete-btn{color:#94a3b8;cursor:pointer;background:0 0;border:none;border-radius:6px;flex:none;justify-content:center;align-items:center;width:30px;height:30px;font-size:13px;transition:all .15s;display:flex}.video-delete-btn:hover{color:#ef4444;background:#fee2e2}.student-admin-topic-fields__list{flex-direction:column;gap:10px;display:flex}.student-admin-topic-search.with-icon{width:100%;position:relative}.student-admin-topic-search.with-icon .input-search-icon{color:#94a3b8;pointer-events:none;font-size:13px;position:absolute;top:50%;left:12px;transform:translateY(-50%)}.student-admin-topic-search.with-icon input{padding-left:36px!important}.admin-form-grid-2{grid-template-columns:1fr 1fr;gap:12px;display:grid}.mono-input{font-family:IBM Plex Mono,monospace!important;font-weight:700!important}.admin-toggle-switch{cursor:pointer;-webkit-user-select:none;user-select:none;background:#f8fafc;border:1.5px solid #e2e8f0;border-radius:10px;align-items:center;gap:14px;padding:10px 14px;transition:all .15s;display:flex}.admin-toggle-switch:hover{background:#f1f5f9}.admin-toggle-switch input{opacity:0;pointer-events:none;width:0;height:0;position:absolute}.toggle-slider{background:#cbd5e1;border-radius:9999px;flex:none;width:44px;height:24px;transition:all .2s cubic-bezier(.4,0,.2,1);position:relative}.toggle-slider:before{content:"";background:#fff;border-radius:50%;width:18px;height:18px;transition:all .2s cubic-bezier(.4,0,.2,1);position:absolute;bottom:3px;left:3px;box-shadow:0 1px 3px #0003}.admin-toggle-switch input:checked+.toggle-slider{background:#2e7a00}.admin-toggle-switch input:checked+.toggle-slider:before{transform:translate(20px)}.toggle-label-wrap{flex-direction:column;gap:2px;display:flex}.admin-submit-btn{color:#fff!important;cursor:pointer!important;background:#2e7a00!important;border:none!important;border-radius:10px!important;width:100%!important;margin-top:4px!important;padding:12px 20px!important;font-size:15px!important;font-weight:700!important;transition:all .15s!important;box-shadow:0 4px 12px #2e7a0033!important}.admin-submit-btn:hover{background:#235e00!important;transform:translateY(-1px)!important;box-shadow:0 6px 16px #2e7a0047!important}.admin-submit-btn:active{transform:scale(.98)!important}.student-admin-pdf-list{background:#f8fafc;border:1.5px solid #e2e8f0;border-radius:10px;flex-direction:column;gap:8px;padding:12px 14px;display:flex}.student-admin-pdf-list__head{justify-content:space-between;align-items:center;gap:10px;display:flex}.pdf-list-title{color:#334155;font-size:12.5px;font-weight:700}.pdf-add-btn{color:#2e7a00;cursor:pointer;background:#eef5e6;border:1px solid #bbf7d0;border-radius:6px;align-items:center;gap:6px;padding:5px 11px;font-family:inherit;font-size:12px;font-weight:700;transition:all .15s;display:inline-flex}.pdf-add-btn:hover{color:#fff;background:#2e7a00;border-color:#2e7a00}.student-admin-pdf-empty{color:#94a3b8;background:#fff;border:1.5px dashed #cbd5e1;border-radius:8px;justify-content:center;align-items:center;gap:8px;padding:14px;font-size:13px;display:flex}.student-admin-pdf-empty i{color:#cbd5e1;font-size:15px}.student-admin-pdf-items{flex-direction:column;gap:6px;display:flex}.student-admin-pdf-card{background:#fff;border:1px solid #e2e8f0;border-radius:8px;align-items:center;gap:10px;padding:8px 10px 8px 12px;display:flex}.pdf-card-icon{color:#e11d48;flex:none;font-size:15px}.pdf-card-link{color:#1e293b;white-space:nowrap;text-overflow:ellipsis;flex:1;font-size:13.5px;font-weight:600;text-decoration:none;overflow:hidden}.pdf-card-link:hover{color:#2e7a00;text-decoration:underline}.pdf-delete-btn{color:#94a3b8;cursor:pointer;background:0 0;border:none;border-radius:6px;flex:none;justify-content:center;align-items:center;width:30px;height:30px;font-size:13px;transition:all .15s;display:flex}.pdf-delete-btn:hover{color:#ef4444;background:#fee2e2}.student-admin-topic-fields__list{grid-template-columns:repeat(3,1fr)!important;gap:10px!important;display:grid!important}@media (max-width:768px){.student-admin-topic-fields__list{grid-template-columns:1fr!important}}.admin-locked-type-badge{color:#334155!important;background:#f1f5f9!important;border:1.5px solid #e2e8f0!important;border-radius:9px!important;align-items:center!important;gap:8px!important;width:fit-content!important;padding:8px 14px!important;font-size:13.5px!important;font-weight:700!important;display:inline-flex!important}.admin-locked-type-badge i{color:#2e7a00!important;font-size:13px!important}.student-admin-video-card-detailed{background:#fff!important;border:1.5px solid #e2e8f0!important;border-radius:9px!important;flex-direction:column!important;gap:8px!important;padding:8px 10px 8px 12px!important;transition:border-color .15s!important;display:flex!important}.student-admin-video-card-detailed:focus-within{border-color:#2e7a00!important;box-shadow:0 0 0 3px #2e7a0014!important}.video-card-top-row{align-items:center!important;gap:8px!important;display:flex!important}.video-url-input{background:#f8fafc!important;border:1px solid #e2e8f0!important;border-radius:7px!important;flex:1!important;min-height:36px!important;padding:6px 10px!important;font-size:13.5px!important}.video-url-input:focus{background:#fff!important;border-color:#2e7a00!important}.video-mode-check{color:#475569!important;cursor:pointer!important;white-space:nowrap!important;-webkit-user-select:none!important;user-select:none!important;box-sizing:border-box!important;background:#f1f5f9!important;border:1px solid #e2e8f0!important;border-radius:6px!important;align-items:center!important;gap:5px!important;min-height:36px!important;padding:5px 9px!important;font-size:12.5px!important;font-weight:600!important;transition:all .15s!important;display:inline-flex!important}.video-mode-check:hover{background:#e2e8f0!important}.video-mode-check input{accent-color:#2e7a00!important;cursor:pointer!important;width:15px!important;height:15px!important;min-height:auto!important;margin:0!important}.video-card-sub-row{align-items:center!important;gap:8px!important;padding-left:20px!important;display:flex!important}.video-title-input{background:#fafafa!important;border:1px dashed #cbd5e1!important;border-radius:6px!important;flex:1!important;min-height:32px!important;padding:5px 10px!important;font-size:13px!important}.video-title-input:focus{background:#fff!important;border-style:solid!important;border-color:#2e7a00!important}.admin-toggle-switch{cursor:pointer!important;-webkit-user-select:none!important;user-select:none!important;box-sizing:border-box!important;background:#f8fafc!important;border:1.5px solid #e2e8f0!important;border-radius:10px!important;align-items:center!important;gap:14px!important;width:100%!important;padding:10px 14px!important;transition:all .18s!important;display:flex!important}.admin-toggle-switch:hover{background:#f1f5f9!important;border-color:#cbd5e1!important}.admin-toggle-switch.is-checked{background:#f0fdf4!important;border-color:#86efac!important}.toggle-slider-track{pointer-events:none!important;background:#cbd5e1!important;border-radius:9999px!important;flex:none!important;width:44px!important;height:24px!important;transition:background-color .2s!important;position:relative!important}.admin-toggle-switch.is-checked .toggle-slider-track{background:#2e7a00!important}.toggle-slider-thumb{background:#fff!important;border-radius:50%!important;width:18px!important;height:18px!important;transition:transform .2s cubic-bezier(.4,0,.2,1)!important;position:absolute!important;top:3px!important;left:3px!important;box-shadow:0 1px 3px #00000040!important}.admin-toggle-switch.is-checked .toggle-slider-thumb{transform:translate(20px)!important}.toggle-label-wrap{pointer-events:none!important;flex-direction:column!important;gap:2px!important;display:flex!important}.toggle-title{color:#1e293b!important;font-size:13.5px!important;font-weight:700!important}.toggle-hint{color:#64748b!important;font-size:12px!important}.student-admin-task-modal{z-index:1200!important;-webkit-backdrop-filter:blur(4px)!important;backdrop-filter:blur(4px)!important;box-sizing:border-box!important;background:#0f172a99!important;place-items:center!important;padding:24px 16px!important;display:grid!important;position:fixed!important;inset:0!important;overflow-y:auto!important}.student-admin-panel{overscroll-behavior:contain!important;background:#fff!important;border:1.5px solid #e2e8f0!important;border-radius:18px!important;flex-direction:column!important;gap:0!important;width:min(740px,100vw - 32px)!important;max-width:100%!important;max-height:calc(100vh - 48px)!important;margin:auto!important;padding:0!important;display:flex!important;position:relative!important;overflow:hidden auto!important;box-shadow:0 24px 60px -12px #00000040,0 0 0 1px #0000000a!important}.student-admin-card-wrap>.student-admin-panel{position:static!important;top:auto!important;left:auto!important;transform:none!important}.student-admin-panel::-webkit-scrollbar{width:7px!important}.lesson-deadlines-panel::-webkit-scrollbar{width:7px!important}.student-admin-panel::-webkit-scrollbar-track{background:#f8fafc!important;border-radius:8px!important}.lesson-deadlines-panel::-webkit-scrollbar-track{background:#f8fafc!important;border-radius:8px!important}.student-admin-panel::-webkit-scrollbar-thumb{background:#cbd5e1!important;border-radius:8px!important}.lesson-deadlines-panel::-webkit-scrollbar-thumb{background:#cbd5e1!important;border-radius:8px!important}.student-admin-panel::-webkit-scrollbar-thumb:hover{background:#94a3b8!important}.lesson-deadlines-panel::-webkit-scrollbar-thumb:hover{background:#94a3b8!important}.student-admin-panel,.lesson-deadlines-panel{overscroll-behavior:contain!important;background:#fff!important;border-radius:18px!important;width:min(840px,100vw - 32px)!important;max-width:100%!important;max-height:calc(100vh - 48px)!important;overflow:hidden auto!important;box-shadow:0 24px 60px -12px #00000040,0 0 0 1px #0000000a!important}.student-admin-panel::-webkit-scrollbar{width:7px!important}.lesson-deadlines-panel::-webkit-scrollbar{width:7px!important}.student-admin-access-list::-webkit-scrollbar{width:7px!important}.deadlines-access-list::-webkit-scrollbar{width:7px!important}.student-admin-panel::-webkit-scrollbar-track{background:#f8fafc!important;border-radius:8px!important}.lesson-deadlines-panel::-webkit-scrollbar-track{background:#f8fafc!important;border-radius:8px!important}.student-admin-access-list::-webkit-scrollbar-track{background:#f8fafc!important;border-radius:8px!important}.deadlines-access-list::-webkit-scrollbar-track{background:#f8fafc!important;border-radius:8px!important}.student-admin-panel::-webkit-scrollbar-thumb{background:#cbd5e1!important;border-radius:8px!important}.lesson-deadlines-panel::-webkit-scrollbar-thumb{background:#cbd5e1!important;border-radius:8px!important}.student-admin-access-list::-webkit-scrollbar-thumb{background:#cbd5e1!important;border-radius:8px!important}.deadlines-access-list::-webkit-scrollbar-thumb{background:#cbd5e1!important;border-radius:8px!important}.student-admin-panel::-webkit-scrollbar-thumb:hover{background:#94a3b8!important}.lesson-deadlines-panel::-webkit-scrollbar-thumb:hover{background:#94a3b8!important}.student-admin-access-list::-webkit-scrollbar-thumb:hover{background:#94a3b8!important}.deadlines-access-list::-webkit-scrollbar-thumb:hover{background:#94a3b8!important}.lesson-deadlines-panel .deadlines-access-list{max-height:380px!important;padding-right:4px!important;overflow:hidden auto!important}.course-topic-nav{z-index:1000!important;align-items:center!important;gap:12px!important;display:flex!important;position:fixed!important;top:20px!important;left:24px!important}.course-topic-nav__btn,.course-topic-nav__btn--course{background:var(--bg-card,#fff)!important;color:var(--text,#17251c)!important;border:2px solid var(--border,#d0d8ce)!important;cursor:pointer!important;box-shadow:var(--shadow,0 4px 15px #0000000d)!important;-webkit-user-select:none!important;user-select:none!important;border-radius:30px!important;justify-content:center!important;align-items:center!important;gap:10px!important;padding:14px 36px!important;font-family:Inter,sans-serif!important;font-size:.95rem!important;font-weight:500!important;text-decoration:none!important;transition:all .4s!important;display:inline-flex!important}.course-topic-nav__btn i,.course-topic-nav__btn--course i{color:var(--accent,#3f7f44)!important;font-size:.95rem!important;transition:transform .2s!important}.course-topic-nav__btn:hover,.course-topic-nav__btn--course:hover{background:var(--accent-soft,#eef6ee)!important;border-color:var(--accent,#3f7f44)!important;color:var(--text,#17251c)!important;box-shadow:var(--shadow-hover,0 8px 25px #3f7f4426)!important;transform:translateY(-3px)!important}.course-topic-nav__btn:hover i,.course-topic-nav__btn--course:hover i{transform:translate(-2px)!important}.course-topic-nav__btn:active,.course-topic-nav__btn--course:active{transform:translateY(0)!important}@media (max-width:768px){.course-topic-nav{z-index:1100!important;box-sizing:border-box!important;-webkit-backdrop-filter:blur(10px)!important;backdrop-filter:blur(10px)!important;background:#f7f8f4f0!important;border-bottom:1px solid #22492614!important;justify-content:flex-start!important;gap:8px!important;width:100%!important;padding:8px 12px!important;position:sticky!important;top:0!important;left:auto!important}.course-topic-nav__btn,.course-topic-nav__btn--course{flex:1 1 0!important;min-width:0!important;min-height:44px!important;padding:9px 14px!important;font-size:.9rem!important;box-shadow:0 2px 8px #18331b0f!important}.course-topic-page .sticky-header-row{top:61px!important}.course-topic-legacy .task,.topic-task-list .task{row-gap:8px!important}.course-topic-legacy .answer-section,.topic-task-list .answer-section{gap:7px!important}}.task-difficulty{color:#475569!important;background:#f8fafc!important;border:1.5px solid #e2e8f0!important;border-radius:9999px!important;align-items:center!important;gap:6px!important;padding:4px 10px!important;font-size:13px!important;font-weight:700!important;line-height:1!important;transition:all .15s!important;display:inline-flex!important}.task-difficulty__info{color:#fff!important;cursor:help!important;background:#cbd5e1!important;border-radius:50%!important;justify-content:center!important;align-items:center!important;width:15px!important;height:15px!important;font-size:10px!important;font-weight:800!important;display:inline-flex!important}.task-difficulty--easy,.task-difficulty--green{color:#15803d!important;background:#f0fdf4!important;border-color:#86efac!important;box-shadow:0 2px 6px #22c55e1f!important}.task-difficulty--easy .task-difficulty__info,.task-difficulty--green .task-difficulty__info{color:#fff!important;background:#22c55e!important}.task-difficulty--medium,.task-difficulty--yellow{color:#a16207!important;background:#fefce8!important;border-color:#fde047!important;box-shadow:0 2px 6px #eab3081f!important}.task-difficulty--medium .task-difficulty__info,.task-difficulty--yellow .task-difficulty__info{color:#fff!important;background:#eab308!important}.task-difficulty--hard,.task-difficulty--red{color:#b91c1c!important;background:#fef2f2!important;border-color:#fca5a5!important;box-shadow:0 2px 6px #ef44441f!important}.task-difficulty--hard .task-difficulty__info,.task-difficulty--red .task-difficulty__info{color:#fff!important;background:#ef4444!important}.card-materials-icons{align-items:center;gap:6px;display:inline-flex}.card-pdf-badge,.card-video-badge{box-shadow:none!important;background:0 0!important;border:none!important;justify-content:center!important;align-items:center!important;padding:0!important;line-height:1!important;display:inline-flex!important}.card-pdf-badge i{color:#dc2626!important;font-size:13px!important}.card-video-badge i{color:#2563eb!important;font-size:12px!important}.task-header-meta-actions{align-items:center;gap:12px;display:flex}.task-inline-report-trigger{color:#64748b;cursor:pointer;background:#fff;border:1px solid #e2e8f0;border-radius:8px;align-items:center;gap:8px;padding:5px 12px;font-size:.8rem;font-weight:700;transition:all .15s;display:inline-flex;box-shadow:0 1px 2px #00000008}.task-inline-report-trigger i{color:#94a3b8;font-size:.82rem;transition:color .15s}.task-inline-report-trigger:hover{color:#dc2626;background:#fef2f2;border-color:#fca5a5;transform:translateY(-1px)}.task-inline-report-trigger:hover i{color:#dc2626}.task-inline-report-modal-backdrop{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:99999;background:#0f172a99;place-items:center;padding:16px;display:grid;position:fixed;inset:0}.task-inline-report-modal{background:#fff;border:1px solid #e2e8f0;border-radius:20px;width:100%;max-width:520px;padding:24px;animation:.2s cubic-bezier(.16,1,.3,1) modal-pop;box-shadow:0 20px 60px #0003}@keyframes modal-pop{0%{opacity:0;transform:scale(.95)translateY(8px)}to{opacity:1;transform:scale(1)translateY(0)}}.task-inline-report-modal__head{justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:18px;display:flex}.task-inline-report-modal__title-wrap{align-items:flex-start;gap:12px;display:flex}.task-inline-report-modal__icon-wrap{background:#fef2f2;border:1px solid #fee2e2;border-radius:12px;flex-shrink:0;width:42px;height:42px;justify-content:center!important;align-items:center!important;display:flex!important}.task-inline-report-modal__icon-wrap i{color:#dc2626;margin:0;font-size:1.15rem;line-height:1}.task-inline-report-modal__select{transition:border-color .2s,box-shadow .2s;box-sizing:border-box!important;color:#1e293b!important;cursor:pointer!important;background:#fff!important;border:1.5px solid #cbd5e1!important;border-radius:10px!important;outline:none!important;width:100%!important;padding:9px 12px!important;font-size:.88rem!important;font-weight:600!important}.task-inline-report-modal__select:focus{border-color:#dc2626!important;box-shadow:0 0 0 3px #dc26261a!important}.task-inline-report-modal__context-box{background:#f8fafc;border:1px solid #e2e8f0;border-radius:12px;flex-direction:column;gap:8px;margin-bottom:14px;padding:12px;display:flex}.task-inline-report-modal__grid-fields{grid-template-columns:1fr 1fr;gap:8px;display:grid}@media (max-width:500px){.task-inline-report-modal__grid-fields{grid-template-columns:1fr}}.task-inline-report-modal__head h4{color:#0f172a;margin:0 0 4px;font-size:1.15rem;font-weight:800}.task-inline-report-modal__path{color:#64748b;align-items:center;gap:5px;font-size:.78rem;font-weight:600;display:inline-flex}.task-inline-report-modal__close{color:#94a3b8;cursor:pointer;background:0 0;border:none;border-radius:6px;padding:4px;font-size:1.1rem;transition:color .15s}.task-inline-report-modal__close:hover{color:#0f172a}.task-inline-report-modal__field{flex-direction:column;gap:8px;margin-bottom:18px;display:flex}.task-inline-report-modal__field label{color:#334155;font-size:.85rem;font-weight:800}.task-inline-report-modal__field textarea{transition:border-color .2s,box-shadow .2s;box-sizing:border-box!important;resize:vertical!important;border:1.5px solid #cbd5e1!important;border-radius:12px!important;outline:none!important;width:100%!important;min-height:100px!important;padding:12px!important;font-size:.9rem!important;line-height:1.5!important}.task-inline-report-modal__field textarea:focus{border-color:#dc2626!important;box-shadow:0 0 0 3px #dc26261a!important}.task-inline-report-modal__error{color:#b91c1c;background:#fef2f2;border:1px solid #fecaca;border-radius:8px;margin-bottom:14px;padding:8px 12px;font-size:.85rem;font-weight:700}.task-inline-report-modal__actions{justify-content:flex-end;align-items:center;gap:10px;display:flex}.task-inline-report-modal__btn-cancel{color:#475569;cursor:pointer;background:#fff;border:1px solid #cbd5e1;border-radius:10px;padding:10px 18px;font-size:.88rem;font-weight:700;transition:all .15s}.task-inline-report-modal__btn-cancel:hover{background:#f1f5f9}.task-inline-report-modal__btn-submit{color:#fff;cursor:pointer;background:#dc2626;border:none;border-radius:10px;align-items:center;gap:8px;padding:10px 20px;font-size:.88rem;font-weight:800;transition:all .15s;display:inline-flex;box-shadow:0 4px 12px #dc262640}.task-inline-report-modal__btn-submit:hover:not(:disabled){background:#b91c1c;transform:translateY(-1px)}.task-inline-report-modal__btn-submit:disabled{opacity:.6;cursor:not-allowed}.task-inline-report-modal__success{text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:8px;padding:24px 16px;display:flex}.task-inline-report-modal__success i{color:#16a34a;font-size:2.5rem}.task-inline-report-modal__success h5{color:#0f172a;margin:0;font-size:1.15rem;font-weight:800}.task-inline-report-modal__success p{color:#64748b;margin:0;font-size:.9rem}.task-hints__button,.check-btn,.solution-btn,.task-video-link,.course-topic-legacy .task-hints__button,.course-topic-legacy .check-btn,.course-topic-legacy .solution-btn,.topic-task-list .task-hints__button,.topic-task-list .check-btn,.topic-task-list .solution-btn{box-sizing:border-box!important;border:2px solid var(--border,#d0d8ce)!important;width:220px!important;max-width:100%!important;min-height:44px!important;color:var(--text,#17251c)!important;text-align:center!important;cursor:pointer!important;box-shadow:none!important;background:#fff!important;border-radius:30px!important;justify-content:center!important;align-items:center!important;gap:8px!important;padding:11px 20px!important;font-family:Inter,sans-serif!important;font-size:.95rem!important;font-weight:700!important;line-height:1.2!important;transition:all .2s!important;display:inline-flex!important}.task-hints__button:hover,.task-hints__button:focus-visible,.check-btn:hover:not(:disabled),.check-btn:focus-visible:not(:disabled),.solution-btn:hover,.solution-btn:focus-visible,.course-topic-legacy .task-hints__button:hover,.course-topic-legacy .check-btn:hover:not(:disabled),.course-topic-legacy .solution-btn:hover,.topic-task-list .task-hints__button:hover,.topic-task-list .check-btn:hover:not(:disabled),.topic-task-list .solution-btn:hover{background:var(--accent-soft,#eef6ee)!important;border-color:var(--accent,#3f7f44)!important;color:var(--accent,#3f7f44)!important;transform:translateY(-2px)!important;box-shadow:0 4px 12px #3f7f441f!important}.task-video-link,.task-video-link:hover,.task-video-link:focus,.task-video-link:focus-visible,.task-video-link:active{transform:none!important}.task-video-link:hover,.task-video-link:focus-visible,.task-video-link:active{background:var(--accent-soft,#eef6ee)!important;border-color:var(--accent,#3f7f44)!important;color:var(--text,#17251c)!important;box-shadow:0 4px 12px #3f7f441f!important}.task-hints__button:hover,.task-hints__button:focus-visible,.course-topic-legacy .task-hints__button:hover,.course-topic-legacy .task-hints__button:focus-visible,.topic-task-list .task-hints__button:hover,.topic-task-list .task-hints__button:focus-visible{color:#17251c!important;background:#fff3c4!important;border-color:#d6aa2f!important;box-shadow:0 4px 12px #d6aa2f29!important}.check-btn:disabled{opacity:.55!important;cursor:not-allowed!important;box-shadow:none!important;transform:none!important}.task,.course-topic-legacy .task,.topic-task-list .task,.topic-task{position:relative!important}.task-card-footer{z-index:5!important;pointer-events:auto!important;justify-content:flex-end!important;align-items:center!important;width:100%!important;margin:18px 0 0!important;padding:0!important;display:flex!important;position:static!important}@media (max-width:640px){.task-card-footer{justify-content:flex-end!important;margin-top:12px!important;position:static!important}}.task-source-formula{object-fit:contain;max-width:100%;height:auto}.task-source-formula--inline{vertical-align:middle;width:auto;margin:0 .12em;display:inline-block}.task-source-formula--block{width:auto;margin:10px auto;display:block}@media (max-width:640px){.task,.course-topic-legacy .task,.topic-task-list .task{border-radius:14px!important;gap:12px!important;padding:16px 14px!important}.task-hints__button,.check-btn,.solution-btn,.task-video-link,.course-topic-legacy .task-hints__button,.course-topic-legacy .check-btn,.course-topic-legacy .solution-btn,.topic-task-list .task-hints__button,.topic-task-list .check-btn,.topic-task-list .solution-btn{border-width:1.5px!important;border-radius:18px!important;gap:6px!important;width:auto!important;min-width:0!important;max-width:100%!important;min-height:32px!important;padding:6px 14px!important;font-size:.82rem!important;font-weight:700!important}.task-hints__button,.course-topic-legacy .task-hints__button,.topic-task-list .task-hints__button{white-space:normal!important}.task-choice-list{gap:6px!important}.task-choice-option{padding:8px 10px!important;font-size:.88rem!important}}
