/* Дизайн-система внутреннего продукта: единые токены и рабочие компоненты. */
:root{--font-body:'Segoe UI Variable Text','Segoe UI',sans-serif;--font-display:'Segoe UI Variable Display','Segoe UI',sans-serif;--color-canvas:#f3f6fb;--color-surface:#fff;--color-surface-soft:#f7f9fc;--color-text:#23364b;--color-muted:#64778b;--color-border:#dfe7f1;--color-primary:#315f91;--color-green:#267369;--color-danger:#a3443e;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:20px;--space-6:24px;--space-8:32px;--space-10:40px;--space-12:48px;--radius-control:10px;--radius-card:16px;--radius-shell:0px;font-family:var(--font-body);font-size:14px;line-height:1.5;color:var(--color-text);background:var(--color-canvas);font-synthesis:none;color-scheme:light}
*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:42px;padding:10px 16px;border:1px solid transparent;border-radius:var(--radius-control);background:var(--color-primary);color:white;font-size:13px;font-weight:600;cursor:pointer;transition:background .15s}button:hover:not(:disabled){background:#244d79}button:disabled{opacity:.5;cursor:not-allowed}button.secondary{border-color:var(--color-border);background:white;color:var(--color-text)}button.secondary:hover:not(:disabled){background:#edf3fb}button.danger{background:#fff0ed;color:var(--color-danger);border-color:#f1d7d2}button.danger:hover:not(:disabled){background:#ffe2dc}.icon-button{padding:9px;min-width:38px;min-height:38px;background:transparent;color:var(--color-text)}.icon-button:hover:not(:disabled){background:#e3edf9}.icon{width:20px;height:20px;flex-shrink:0}:focus-visible{outline:3px solid #7aa6d5;outline-offset:3px}
input,select,textarea{display:block;width:100%;min-height:46px;border:1px solid #cbd8e7;border-radius:var(--radius-control);padding:11px 13px;background:white;color:var(--color-text);margin-top:8px}input:hover,select:hover,textarea:hover{border-color:#9fb4cb}input:focus,select:focus,textarea:focus{outline:none;border-color:#6293c8;box-shadow:0 0 0 3px #dfedfc}input::placeholder,textarea::placeholder{color:#8091a5}select{appearance:none;padding-right:48px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235b728b' stroke-width='1.7' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-size:16px;background-position:right 16px center}textarea{min-height:112px;resize:vertical;line-height:1.65}label{display:block;font-weight:600;font-size:13px;margin:20px 0 8px}form>button{margin-top:20px}h1,h2,h3,p,strong{overflow-wrap:anywhere}h1,h2,h3{font-family:var(--font-display);font-weight:600}h1{font-size:28px;line-height:1.25;letter-spacing:-.7px;margin:0 0 10px}h2{font-size:19px;line-height:1.35;margin:0 0 12px}h3{font-size:15px;line-height:1.4;margin:0 0 10px}p{margin:8px 0 16px;line-height:1.65}a{color:var(--color-primary)}.muted,.hint{color:var(--color-muted)}.hint{font-size:12px}.error{color:var(--color-danger);margin-top:16px}.pre{white-space:pre-wrap;overflow-wrap:anywhere}.row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.between{justify-content:space-between}.grid{display:grid;gap:24px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr));align-items:start}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-card);padding:24px;margin-bottom:24px;min-width:0}.card>h2{margin-bottom:16px}.card>label:first-child{margin-top:0}.card p:last-child{margin-bottom:0}.badge{display:inline-flex;padding:5px 10px;border-radius:20px;font-size:12px;font-weight:500;white-space:nowrap;background:#eef2f7;color:#617489}.badge.live{background:#e4f3ef;color:#236e5f}.badge.attention{background:#fff2df;color:#8a6027}.badge.gray{background:#eef2f7;color:#617489}.empty{padding:24px 0;color:var(--color-muted)}.empty p{max-width:560px}.empty button{margin-top:4px}.section-head{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin:28px 0 8px}.section-head h2{margin:0}.section-title{margin:30px 0 16px}.form-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.notice{border:1px solid #d4e2f3;background:#edf4fe;border-radius:var(--radius-card);padding:18px 22px;margin-bottom:24px}.notice>div{flex:1;min-width:200px}.notice p{font-size:13px;color:#5b7490;margin:6px 0 0}.active-panel{border:1px solid #9dc9c1;border-left:4px solid #318479}.list-row{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:18px 0;border-bottom:1px solid var(--color-border)}.list-row:last-child{border-bottom:0}.list-row>div:first-child{flex:1;min-width:0}.list-row p{font-size:13px;color:var(--color-muted);margin:6px 0 0}.assign-form{margin-top:24px;padding-top:20px;border-top:1px solid var(--color-border)}.assign-form .row{flex-wrap:nowrap}.assign-form select{flex:1;min-width:0;margin:0}.assign-form button{flex-shrink:0}.assign-form .hint{margin-top:12px}.setup-list{padding-left:20px;margin:0}.setup-list li{padding:10px 0;line-height:1.7}.setup-list button{margin-left:12px}
.layout{display:grid;grid-template-columns:248px minmax(0,1fr);min-height:100dvh}.sidebar{position:sticky;top:0;height:100dvh;overflow-y:auto;padding:28px 16px 20px;background:linear-gradient(180deg,#edf4ff,#f0f5fc);border-right:1px solid var(--color-border);display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:650;letter-spacing:-.4px;padding:0 12px;color:#315c8b}.brand .icon{width:24px;height:24px}.sidebar nav{display:grid;gap:8px;margin-top:36px}.nav{justify-content:flex-start;gap:12px;text-align:left;background:transparent;color:#586e87;font-size:13px;font-weight:500;padding:13px 12px;min-height:48px}.nav:hover:not(:disabled){background:#e1ecfa}.nav.active{background:#dbe9fb;color:#254f81;font-weight:650}.nav .icon{width:18px;height:18px}.nav-count{margin-left:auto;padding:1px 7px;background:#fff;border-radius:20px;font-size:12px}.profile{margin-top:auto;padding:20px 10px 0;border-top:1px solid #d6e1ef;display:flex;gap:10px;align-items:center}.profile>div{flex:1;min-width:0}.profile strong{display:block;font-size:13px}.profile small{display:block;font-size:12px;color:var(--color-muted);margin-top:3px}main{min-width:0;padding:24px 36px 40px;max-width:1500px;width:100%}.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;border-bottom:1px solid var(--color-border);padding-bottom:20px;margin-bottom:28px;color:var(--color-muted);font-size:13px}.mobile-logout{display:none}.page-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:24px;margin-bottom:24px}.page-heading p{margin:0;max-width:700px;font-size:14px}.page-heading>button{flex-shrink:0}.lesson-material{padding:18px;background:var(--color-surface-soft);border-radius:12px;line-height:1.8;margin:16px 0 24px}.task-editor{background:var(--color-surface-soft);border:1px solid var(--color-border);border-radius:12px;padding:20px;margin:20px 0}.task-editor .row h3{margin:0}.choice{display:flex;gap:12px;align-items:center;padding:13px 16px;background:#fff;border:1px solid var(--color-border);border-radius:10px;margin:10px 0;font-weight:400;cursor:pointer}.choice input{width:16px;height:16px;min-height:0;margin:0;accent-color:var(--color-primary);box-shadow:none}.choice:has(input:checked){border-color:#6998c8;background:#edf4ff}details summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0;font-size:13px;font-weight:600;cursor:pointer;list-style:none}summary::-webkit-details-marker{display:none}details summary::after{content:'';display:block;width:7px;height:7px;border-bottom:1.5px solid currentColor;border-right:1.5px solid currentColor;transform:rotate(45deg);margin:0 8px 4px 12px;flex-shrink:0}details[open]>summary::after{transform:rotate(225deg);margin-top:5px}details[open]>summary{margin-bottom:12px}.lesson-detail{border-bottom:1px solid var(--color-border);padding:8px 0}.lesson-detail:last-child{border:0}.lesson-detail summary strong{font-size:15px;display:block}.lesson-detail summary small{font-size:12px;font-weight:400;color:var(--color-muted);display:block;margin-top:5px}.lesson-detail>button{margin:4px 0 20px}.student-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px 16px;padding:18px 0;border-bottom:1px solid var(--color-border)}.student-row:last-child{border:0}.student-row details{grid-column:1/-1}.student-row .hint{margin:4px 0 0}.answer-row{padding:18px 0;border-bottom:1px solid var(--color-border)}.link-box{background:#edf4fc;padding:16px;border-radius:10px;margin:20px 0;overflow-wrap:anywhere}.auth{min-height:100dvh;max-width:none;display:grid;place-items:center;padding:24px;background:radial-gradient(ellipse at 15% 10%,#e1edfe,transparent 65%),var(--color-canvas)}.auth-card{position:relative;width:100%;max-width:440px;background:white;border:1px solid var(--color-border);padding:32px;border-radius:20px;box-shadow:0 14px 45px #335c8910}.auth-card .brand{padding:0;margin-bottom:28px}.auth-card h1{font-size:25px}.auth-card button[type=submit]{width:100%}.auth-illustration{width:80px;height:70px;object-fit:contain;display:block;margin:0 0 16px}.auth-card>.muted{font-size:13px}#toast{position:fixed;bottom:24px;right:24px;max-width:480px;background:#284a71;color:white;padding:16px 22px;border-radius:12px;display:none;z-index:10;box-shadow:0 12px 32px #1e3b6422}
@media(max-width:1100px){.layout{grid-template-columns:220px minmax(0,1fr)}main{padding:24px}.grid.two{grid-template-columns:1fr;gap:0}.nav{font-size:12px;gap:9px}.list-row{flex-wrap:wrap}.list-row>div:first-child{min-width:190px}.assign-form .row{flex-wrap:wrap}.assign-form button{margin-top:4px}.setup-list button{margin:8px 0 0;display:flex}}
@media(max-width:700px){.layout{display:block}.sidebar{position:relative;height:auto;padding:18px 16px;overflow:visible;border-right:0;border-bottom:1px solid var(--color-border)}.brand{padding:0;font-size:18px}.sidebar nav{display:flex;overflow-x:auto;margin-top:18px;gap:6px;padding-bottom:4px}.nav{flex-shrink:0;font-size:12px;min-height:42px;padding:10px}.nav-count{display:none}.profile{display:none}.mobile-logout{display:inline-flex;min-height:34px;padding:7px 10px}.topbar{font-size:12px;gap:10px}.topbar .row{gap:8px}.topbar .badge{font-size:11px}main{padding:20px 16px}.page-heading{flex-direction:column;gap:16px}h1{font-size:25px}.card{padding:20px;margin-bottom:20px}.notice{padding:16px}.list-row{align-items:flex-start}.list-row>.row{width:100%}.assign-form .row{display:block}.assign-form button{margin-top:12px;width:100%}.task-editor{padding:16px}.student-row{grid-template-columns:1fr}.student-row details{grid-column:auto}.student-row>button{justify-self:start}.auth-card{padding:26px}.section-head .hint{font-size:12px}#toast{left:16px;right:16px;bottom:16px;max-width:none}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}
/* Урок: семантические выделения, шаблоны и пошаговый просмотр. */
:root{--color-info:#edf4ff;--color-rule:#edf6f3;--color-example:#f2effb;--color-warning:#fff6e6}
.chips{display:flex;gap:7px;flex-wrap:wrap;margin:10px 0 16px}.chip{display:inline-flex;padding:4px 10px;background:#eaf1fb;border:1px solid #d9e5f5;border-radius:20px;font-size:12px;color:#456a92}.template-picker{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0 26px}.template-button{min-height:38px;font-size:12px}.format-toolbar{display:flex;gap:6px;flex-wrap:wrap;margin:8px 0}.format-toolbar button{font-size:12px;min-height:32px;padding:6px 10px}.rich-text{line-height:1.85;overflow-wrap:anywhere;margin:12px 0 20px}.rich-text mark{background:#fff0b0;border-radius:3px;padding:1px 3px;color:#4c4733}.rich-text blockquote{margin:10px 0;padding:10px 14px;border-left:3px solid #92b7dc;background:#f1f6fd}.tone-info{background:var(--color-info);border-color:#cddff5}.tone-rule{background:var(--color-rule);border-color:#cbe2dc;border-left:4px solid #70a393}.tone-example{background:var(--color-example);border-color:#dcd4ee;border-left:4px solid #a291c7}.tone-warning{background:var(--color-warning);border-color:#ecddba;border-left:4px solid #cfa859}.exercise-block{padding:20px;border:1px solid var(--color-border);border-radius:12px;margin-top:22px}.exercise-block.tone-rule,.exercise-block.tone-info,.exercise-block.tone-warning,.exercise-block.tone-example{border-left-width:4px}.exercise-image{display:block;max-width:100%;width:auto;max-height:440px;object-fit:contain;border-radius:14px;margin:20px auto;background:#fff}.editor-image{display:block;width:240px;max-width:100%;max-height:180px;object-fit:contain;border-radius:12px;margin:16px 0}.media-editor{margin-top:24px;padding-top:18px;border-top:1px solid #d5e0ec}.media-editor input[type=file]{padding:10px;background:#fff}.media-editor audio,.audio-block audio{display:block;width:100%;max-width:550px;margin:16px 0}.audio-block{padding:8px 0 20px}.audio-block a{font-size:12px}.teacher-notes{border:1px dashed #b6c7d9;border-radius:12px;padding:0 16px;margin:16px 0 24px}.player-layout{display:grid;grid-template-columns:225px minmax(0,1fr);gap:24px;align-items:start;margin-top:24px}.player-outline{position:sticky;top:20px;border:1px solid var(--color-border);border-radius:16px;background:white;padding:20px}.player-outline h2{font-size:17px}.player-outline nav{display:grid;gap:8px;margin:18px 0}.step-button{justify-content:flex-start;text-align:left;gap:10px;background:#f4f7fc;border:1px solid transparent;color:#59718b;font-weight:400;font-size:12px;padding:10px;min-height:42px}.step-button>span:first-child{width:22px;height:22px;border-radius:50%;background:white;display:grid;place-items:center;flex-shrink:0}.step-button.current{background:#e3efff;color:#2d5b8f;border-color:#b2ccef;font-weight:600}.step-button:hover:not(:disabled){background:#e8f1fc}.player-content{min-width:0}.player-actions{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:24px;padding-top:20px;border-top:1px solid var(--color-border)}.word-bank{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0}.word-bank button{border-radius:24px;min-height:36px}.text-bullet{padding-left:8px}.player-content .rich-text{font-size:15px}.player-content>details{padding:0 0 8px}
@media(max-width:1000px){.player-layout{grid-template-columns:minmax(0,1fr)}.player-outline{position:static;min-width:0}.player-outline nav{display:flex;overflow-x:auto;max-width:100%;min-width:0}.step-button{flex-shrink:0;max-width:180px}.player-content{padding:20px}.exercise-block{padding:16px}.player-actions button{flex:1}.template-picker{gap:8px}.template-button{padding:8px 12px}.format-toolbar button{padding:6px 9px}}
/* Обновлённое рабочее пространство преподавателя, октябрь 2026. */
:root{--color-canvas:#f6f8fc;--color-text:#23344b;--color-muted:#79879b;--color-border:#e7edf5;--color-primary:#397bdd;--radius-control:12px;--radius-card:22px}
button{font-weight:600;min-height:40px}button:hover:not(:disabled){background:#2d69c0}button.secondary{border-color:#e3eaf4;background:#f7f9fd;color:#516782}button.secondary:hover:not(:disabled){background:#eaf1fc}.card{box-shadow:0 5px 24px #324e7710;border-color:#e9eef6;padding:28px}.sidebar{background:#fff;padding:32px 18px 22px}.sidebar nav{gap:6px}.nav.active{background:#eaf2ff;color:#397bdd}.brand{color:#2d568b}.profile{border-color:#e9eef6}.topbar{border:0;margin-bottom:26px;padding-bottom:0}.page-heading{margin-bottom:30px}.page-heading h1{font-size:32px;letter-spacing:-1px}.page-heading p{font-size:13px}main{padding:30px 42px 48px}.notice{border:0;background:#eaf2fe;border-radius:18px}.connection-strip{padding:13px 18px}.connection-strip p{font-size:12px}.list-row{padding:22px 0}.list-row strong{font-size:15px}.list-row .badge{margin-top:4px}.assignment-drawer{margin-top:22px;border-top:1px solid var(--color-border)}.assignment-drawer>summary{color:var(--color-primary);padding-top:20px}.assignment-drawer .assign-form{margin-top:0;border-top:0;padding-top:0}.student-row{padding:22px 0}.student-row>div>strong{font-size:16px}.student-row .danger{background:transparent;border-color:transparent;color:#a96b69}.student-create{align-self:start}.student-create>summary{font-size:17px;color:var(--color-primary)}
.eyebrow{display:block;font-size:10px;font-weight:700;letter-spacing:1.6px;color:#8a9ab0;margin-bottom:14px}.lesson-builder{padding-bottom:20px}.editor-basics{margin-bottom:26px}.lesson-title-label{margin:0}.lesson-title-label input{font-size:23px;font-weight:600;letter-spacing:-.4px;min-height:58px}.editor-meta{display:grid;grid-template-columns:140px 110px minmax(0,1fr);gap:18px}.optional-settings{margin-top:16px;border-top:1px solid var(--color-border)}.optional-settings>summary{color:#677e99;font-weight:500}.builder-grid{display:grid;grid-template-columns:232px minmax(0,1fr);gap:28px;align-items:start}.block-toolbox{position:sticky;top:22px;padding:22px}.block-toolbox h2{margin-bottom:6px;font-size:18px}.block-toolbox .template-picker{display:grid;gap:7px;margin:18px 0}.block-toolbox .template-button{justify-content:flex-start;text-align:left;border:0;background:transparent;min-height:44px;padding:8px;font-size:12px;color:#52667e}.block-toolbox .template-button:hover{background:#edf4ff}.template-symbol{display:grid;place-items:center;width:30px;height:30px;border-radius:9px;background:#edf3ff;color:#5f8cc4;font-size:17px;flex-shrink:0}.blank-block{width:100%;font-size:12px}.builder-content{min-width:0}.builder-content>.section-head{margin:0 0 16px}.builder-content h2{font-size:19px}.block-accordion{background:#fff;border:1px solid #e5ebf4;border-radius:18px;padding:0;margin:0 0 12px;box-shadow:0 3px 14px #324e7708}.block-accordion>summary{padding:18px 20px;gap:14px;margin:0!important;min-height:80px}.block-summary>span:nth-child(2){flex:1;min-width:0}.block-summary strong{display:block;font-size:14px}.block-summary small{display:block;font-size:12px;font-weight:400;color:#8593a6;white-space:nowrap;text-overflow:ellipsis;overflow:hidden;max-width:380px;margin-top:4px}.block-number{width:32px;height:32px;display:grid;place-items:center;border-radius:10px;background:#eef4fe;color:#5a82b2;flex-shrink:0}.block-accordion[open]{border-color:#c7d9f0;box-shadow:0 8px 28px #375b8910}.block-accordion[open]>.block-summary{background:#f8faff;border-radius:18px 18px 0 0;border-bottom:1px solid #e8eef7}.block-body{padding:22px}.block-body>.row h3{font-size:12px;color:#8c99ac;font-weight:500}.block-body>.row button{min-height:30px;padding:5px 9px;font-size:11px}.block-body .optional-settings{margin-top:12px}.block-body .media-editor{padding:0;margin-top:20px}.block-body textarea[data-field=prompt]{min-height:145px}.format-toolbar button{border:0;background:#f3f6fc}.editor-savebar{position:sticky;bottom:12px;z-index:3;display:flex;align-items:center;justify-content:space-between;gap:16px;background:#ffffffed;backdrop-filter:blur(14px);border:1px solid #dfe8f5;border-radius:16px;padding:14px 20px;margin-top:24px;box-shadow:0 8px 32px #35578514}.library-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;align-items:start}.library-card{margin:0}.library-card h2{margin:20px 0 8px;font-size:20px}.library-cover{background:linear-gradient(120deg,#eef4ff,#dceaff);height:80px;border-radius:14px;display:flex;align-items:center;justify-content:space-between;padding:20px;color:#6087ba}.library-cover .icon{width:30px;height:30px}.library-cover span{font-size:12px;border-radius:20px;background:#ffffffa8;padding:5px 12px}.library-card>.lesson-detail{margin:14px 0;border-top:1px solid var(--color-border)}
@media(max-width:1100px){main{padding:26px}.builder-grid{grid-template-columns:190px minmax(0,1fr);gap:18px}.block-toolbox{padding:18px}.block-summary .badge{display:none}.block-summary small{max-width:240px}}
@media(max-width:800px){.builder-grid{grid-template-columns:minmax(0,1fr)}.block-toolbox{position:static;margin-bottom:0}.block-toolbox .template-picker{grid-template-columns:repeat(2,minmax(0,1fr))}.block-toolbox .blank-block{width:auto}.library-grid{grid-template-columns:minmax(0,1fr)}.editor-meta{grid-template-columns:1fr 1fr}.editor-meta>label:last-child{grid-column:1/-1}.editor-savebar{bottom:8px}.editor-savebar .hint{max-width:160px}.block-summary small{max-width:210px}.block-body{padding:18px}.page-heading h1{font-size:27px}}
@media(max-width:700px){main{padding:22px 16px}.sidebar{padding:18px 16px}.card{padding:22px}.block-accordion{padding:0}.editor-savebar{padding:12px;gap:10px}.editor-savebar button{font-size:12px}.connection-strip .secondary{min-height:34px}.block-summary>span:nth-child(2){overflow:hidden}.block-summary small{max-width:100%}}
@media(min-width:1101px){.grid.two.student-grid{grid-template-columns:minmax(0,1fr) 290px;gap:24px}.student-grid .student-row>.row{gap:6px}.student-grid .student-row button{font-size:12px;padding:8px 10px}}
/* Компонентный UI-аудит: единая типографика и управляемые состояния. */
:root{--font-body:'Segoe UI',Arial,sans-serif;--font-display:'Segoe UI',Arial,sans-serif;--color-muted:#607187;--color-primary:#2567c6;--color-text:#23344b;--color-canvas:#f6f8fc;--color-border:#dfe7f1;--radius-control:12px;--radius-card:20px;font-synthesis:none}
strong,b{font-weight:700}em,i{font-style:italic}h1,h2,h3{font-weight:600}button,input,select,textarea{font-family:var(--font-body)}button:hover:not(:disabled){background:#1e59af}.hint,.muted{color:var(--color-muted)}.hint{font-size:13px;line-height:1.6}.eyebrow{color:#607187}.block-summary small{color:#607187}.block-summary strong{font-weight:600}.block-body>.row h3{color:#607187}.nav.active{color:#2567c6}.nav.active:hover{background:#e5efff}.topbar{color:#607187}input::placeholder,textarea::placeholder{color:#6c7d91}.rich-text{line-height:1.75;font-size:15px}.rich-text p{margin:0 0 12px}.rich-text p:last-child{margin-bottom:0}.rich-text strong{font-weight:700}.rich-text em{font-style:italic}.rich-text ul{padding-left:22px;margin:12px 0}.rich-text blockquote{margin:12px 0}.format-toolbar mark{background:#fff0b0;color:#574b21;padding:0 4px;border-radius:3px}.format-toolbar button{min-height:36px;min-width:38px}.block-actions{padding-bottom:8px}.block-actions .delete-block{color:#a3443e}.block-config{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;min-width:0}.block-config label{min-width:0}.block-config input{margin-bottom:0}.editor-meta{grid-template-columns:150px 145px minmax(0,1fr)}.editor-basics{padding:24px}.editor-title-label input{font-size:22px}.editor-error-summary{border:1px solid #edc0ba;background:#fff4f2;color:#923a34;padding:18px 22px;border-radius:16px;margin-bottom:20px}.editor-error-summary ul{margin-bottom:0}.has-error{border-color:#d68d83!important}.context-note{padding:10px 16px;background:#eaf2ff;border-radius:12px;font-size:13px}.inline-preview summary{font-weight:400;color:#496788;padding:12px 0}.speech-editor h3{font-size:16px;margin:20px 0 0}.block-body .speech-editor{margin:18px 0 0;padding:0}.speech-editor>button{margin-top:18px}.speech-editor .hint{margin-top:10px}.response-options,.answer-options{border:0;min-width:0;padding:0;margin:20px 0}.answer-options legend{font-size:13px;font-weight:600;padding:0}.answer-options .hint{margin:4px 0 12px}.option-editor{display:flex;align-items:center;gap:10px;margin:10px 0}.option-editor input[data-correct-option]{width:19px;height:19px;min-height:19px;margin:0;flex-shrink:0;accent-color:var(--color-primary)}.option-editor input[data-option-text]{margin:0;min-width:0}.option-letter{font-size:12px;color:#607187;width:18px;flex-shrink:0}.answer-options>button{margin-top:10px}.sr-only,.native-select,.upload-native{position:absolute!important;width:1px!important;height:1px!important;min-height:0!important;padding:0!important;margin:0!important;overflow:hidden!important;clip-path:inset(50%);white-space:nowrap;border:0!important}.select-control{position:relative;margin-top:8px;min-width:0;width:100%}.select-trigger{position:relative;display:block;width:100%;text-align:left;min-height:46px;border:1px solid #cbd8e7;background:#fff;color:#23344b;font-size:14px;font-weight:400;padding:11px 44px 11px 13px;white-space:nowrap;text-overflow:ellipsis;overflow:hidden;line-height:1.5}.select-trigger:hover:not(:disabled){background:#fff;border-color:#8eaacb}.select-trigger[aria-expanded=true]{border-color:#2567c6;box-shadow:0 0 0 3px #dfedfc}.select-trigger:disabled{background:#f2f5fa;opacity:1;color:#6e7c91}.select-trigger[aria-invalid=true]{border-color:#b75045}.select-chevron{position:absolute;right:18px;top:18px;width:8px;height:8px;border-bottom:1.5px solid #58708b;border-right:1.5px solid #58708b;transform:rotate(45deg)}.select-trigger[aria-expanded=true] .select-chevron{transform:rotate(225deg);top:21px}.select-menu{position:fixed;z-index:30;border:1px solid #d2dfee;border-radius:13px;padding:6px;background:white;box-shadow:0 12px 36px #24497325;overflow:auto;overscroll-behavior:contain;color:#23344b;font:400 14px/1.5 var(--font-body)}.select-option{padding:11px 14px;border-radius:8px;min-height:42px;cursor:pointer;overflow-wrap:anywhere}.select-option:hover,.select-option.highlighted{background:#edf3fd}.select-option[aria-selected=true]{color:#1e59af;font-weight:600;background:#e8f1ff}.select-option[aria-disabled=true]{color:#7c8797;cursor:not-allowed;background:#f8f9fb}.assign-form .row>.select-control{flex:1;margin:0}.upload-zone{position:relative;display:flex;align-items:center;gap:14px;padding:18px;border:1px dashed #9bb4d4;background:#f7faff;border-radius:14px;margin:14px 0;min-width:0}.upload-zone>div{flex:1;min-width:0}.upload-zone strong{display:block;font-size:14px}.upload-zone p{margin:3px 0;font-size:12px;color:#607187}.upload-status{display:block;font-size:12px;line-height:1.55;color:#607187;overflow-wrap:anywhere}.upload-symbol{display:grid;place-items:center;width:40px;height:40px;border-radius:11px;background:#e5effe;color:#4678b4;font-size:24px;flex-shrink:0}.upload-zone button{flex-shrink:0}.upload-zone.drag-over{border-color:#2567c6;background:#eaf3ff}.media-attachment{display:flex;align-items:center;gap:18px;flex-wrap:wrap}.media-attachment .editor-image{margin:0 0 10px;width:180px;max-height:130px}.sessions-toolbar{display:flex;align-items:center;justify-content:space-between;gap:18px;padding-bottom:12px}.sessions-toolbar label{margin:0;max-width:400px;width:100%}.sessions-toolbar .chip{flex-shrink:0}.access-choice{background:#f7faff;border:0;margin-top:18px;font-size:13px}.text-button{background:transparent;color:#2567c6;border:0;padding:8px 0;min-height:36px}.text-button:hover:not(:disabled){background:#edf3fd}.library-actions{margin:18px 0}.library-actions>.secondary{width:100%}.library-actions details{border:0}.library-card .lesson-detail>summary{font-weight:400;color:#607187}.modal-open{overflow:hidden}.lesson-preview-dialog{width:min(1020px,calc(100vw - 40px));height:calc(100dvh - 48px);max-height:none;max-width:none;border:1px solid #dce5f0;border-radius:22px;padding:0;background:#f6f8fc;color:#23344b;overflow:auto;font:14px/1.5 var(--font-body);box-shadow:0 20px 80px #172d4d40}.lesson-preview-dialog::backdrop,.image-dialog::backdrop{background:#1d304d70;backdrop-filter:blur(4px)}.preview-header{position:sticky;top:0;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 28px;background:#fffffff5;border-bottom:1px solid #e0e8f2}.preview-header .eyebrow{margin-bottom:4px}.preview-header h2{font-size:22px;margin:0}.preview-body{padding:22px 28px}.preview-notice{color:#506983;font-size:13px;margin:0 0 20px}.worksheet-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:14px}.worksheet-meta .chips{margin:0}.worksheet-outline{background:#fff;border:1px solid #dfe7f1;border-radius:14px;padding:0 18px;margin:0 0 22px}.worksheet-outline>summary{font-weight:500}.worksheet-outline nav{display:flex;flex-wrap:wrap;gap:8px;padding-bottom:16px}.outline-link{font-size:13px;font-weight:400;min-height:36px;background:#f1f5fb;color:#415b7a;padding:7px 10px}.outline-link:hover:not(:disabled){background:#e4efff}.outline-link>span{color:#2567c6;font-weight:600}.worksheet-intro{max-width:940px;margin-left:auto;margin-right:auto}.lesson-worksheet{max-width:940px;margin:auto}.worksheet-exercise{padding:26px;scroll-margin-top:24px}.worksheet-section-head{display:flex;align-items:center;gap:12px;margin-bottom:18px}.worksheet-section-head h2{margin:0;font-size:19px}.worksheet-prompt{padding:0;border:0;background:transparent}.worksheet-prompt:not(.tone-plain){padding:18px;border-radius:12px;border-left:3px solid #94b2d9}.worksheet-prompt .chips:empty{display:none}.worksheet-prompt .chips{margin:0 0 8px}.worksheet-prompt .rich-text{margin:0}.worksheet-exercise>label{margin-top:22px}.worksheet-exercise .response-options{margin:18px 0 0}.worksheet-submit{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 26px}.worksheet-submit p{margin:6px 0 0}.worksheet-submit>button{margin:0;flex-shrink:0}.exercise-figure{margin:20px 0 0}.image-expand{position:relative;display:block;width:100%;padding:0;background:#f3f6fa!important;border:1px solid #e2e9f3;border-radius:14px;overflow:hidden;cursor:zoom-in;color:#314d70}.image-expand .exercise-image{width:100%;max-height:min(440px,55svh);margin:0;object-fit:contain;background:#f3f6fa;border-radius:0}.image-expand>span{display:block;padding:8px 14px;background:#eef4fd;text-align:right;font-size:12px;font-weight:500}.image-expand:hover{border-color:#96b5df}.image-dialog{width:min(1180px,calc(100vw - 32px));max-width:none;height:calc(100dvh - 32px);max-height:none;border:0;border-radius:18px;padding:18px;background:#fff;color:#23344b;display:none}.image-dialog[open]{display:flex;flex-direction:column}.image-dialog header{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-shrink:0}.image-dialog .image-view{min-height:0;flex:1;overflow:auto;text-align:center}.image-view img{width:100%;height:100%;object-fit:contain}.image-dialog p{margin:10px 0 0;font-size:12px}.worksheet-exercise audio{width:100%}.worksheet-exercise .choice{align-items:flex-start;min-height:48px}.worksheet-exercise .choice input{margin-top:3px;flex-shrink:0}.worksheet-submit .hint{color:#607187}
@media(max-width:1100px){.block-config{grid-template-columns:minmax(0,1fr)}.upload-zone{flex-wrap:wrap}.upload-zone>button{margin-left:54px}}
@media(max-width:800px){.editor-meta{grid-template-columns:1fr 1fr}.editor-meta>label:last-child{grid-column:1/-1}.editor-savebar{flex-wrap:wrap}.editor-savebar>.hint{max-width:none;font-size:12px}.editor-savebar>.row{width:100%;flex-wrap:nowrap}.editor-savebar>.row>button{flex:1}.sessions-toolbar{align-items:flex-start;flex-direction:column}.assignment-row>.row{gap:8px}.assignment-row button{font-size:12px}.lesson-preview-dialog{width:calc(100vw - 16px);height:calc(100dvh - 16px);border-radius:16px}.preview-header{padding:14px 16px}.preview-header h2{font-size:18px}.preview-body{padding:16px}.worksheet-submit{flex-direction:column;align-items:stretch}.worksheet-submit>button{width:100%}.worksheet-section-head h2{font-size:18px}.worksheet-exercise{padding:22px}.worksheet-outline nav{display:grid}.outline-link{text-align:left;justify-content:flex-start}.worksheet-meta{font-size:12px}.worksheet-meta .chip{font-size:11px}.exercise-figure{margin-top:16px}.image-expand .exercise-image{max-height:46svh}.image-dialog{width:calc(100vw - 16px);height:calc(100dvh - 16px);padding:12px}.upload-zone>button{width:100%;margin-left:0}.upload-zone{padding:16px}.upload-symbol{width:32px;height:32px}.option-editor{gap:7px}.option-editor .icon-button{min-width:30px;padding:5px}.option-letter{display:none}.block-body{padding:18px}.block-toolbox .hint{margin-bottom:6px}.block-toolbox .template-button{font-size:12px}.editor-meta label{font-size:12px}.select-menu{font-size:14px}.worksheet-prompt:not(.tone-plain){padding:14px}.worksheet-section-head .block-number{width:28px;height:28px}.page-heading>.row{gap:8px}.page-heading>.row button{font-size:12px}.audio-block{padding-bottom:6px}}
.worksheet-prompt.tone-info{background:var(--color-info);border-left-color:#729cce}.worksheet-prompt.tone-rule{background:var(--color-rule);border-left-color:#70a393}.worksheet-prompt.tone-example{background:var(--color-example);border-left-color:#a291c7}.worksheet-prompt.tone-warning{background:var(--color-warning);border-left-color:#cfa859}
.image-view.zoomed img{width:auto;height:auto;max-width:none;min-width:100%;object-fit:initial}.image-dialog .image-view{min-width:0;margin-top:12px;overscroll-behavior:contain}.image-dialog header>.row{flex-wrap:nowrap}.image-dialog [data-image-zoom]{font-size:12px;min-height:36px}.image-dialog header>span{font-size:13px}.block-toolbox .template-button:hover:not(:disabled){background:#edf4ff}
@media(max-width:500px){.image-dialog header{align-items:flex-start}.image-dialog header>span{max-width:110px}.image-dialog header>.row{gap:4px}.image-dialog [data-image-zoom]{padding:8px}}
.badge,.badge.gray{color:#506278}.notice p{color:#506783}.block-number{color:#35649d}.library-cover{color:#3d608b}.student-row .danger{color:#944740}input::placeholder,textarea::placeholder{color:#607187}.block-summary small{font-size:13px}.upload-zone p,.upload-status{font-size:13px}.select-trigger{font-weight:400}.worksheet-exercise .block-number{font-weight:600}