:root{--bg:#f6f7f4;--surface:#fff;--text:#202521;--muted:#69716b;--line:#e5e8e3;--brand:#355f66;--brand-soft:#e7efef;--danger:#a84f4f;--shadow:0 8px 30px rgba(26,38,32,.05);--radius:16px}
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@media(max-width:1050px){.stat-grid{grid-template-columns:repeat(2,1fr)}.editor-grid{grid-template-columns:1fr}}
@media(max-width:760px){.mobile-menu{display:grid;place-items:center;position:fixed;top:12px;left:12px;z-index:30;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;background:#fff;font-size:20px}.sidebar{transform:translateX(-100%);transition:.2s ease}.sidebar.open{transform:translateX(0);box-shadow:20px 0 50px rgba(0,0,0,.12)}.main{margin-left:0;padding:72px 16px 24px}.page-header{flex-direction:column}.page-header .btn{width:100%}.stat-grid{grid-template-columns:1fr 1fr}.filters>*{flex:1 1 100%}.two-col{grid-template-columns:1fr}.card{padding:17px}}
@media(max-width:440px){.stat-grid{grid-template-columns:1fr}}

.ai-panel{margin-bottom:18px}.connection-status{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 0 20px;border-top:1px solid var(--line);margin-top:8px}.connection-status div{display:flex;flex-direction:column}.connection-status small{color:var(--muted);margin-top:2px}.status-badge{display:inline-flex;padding:6px 10px;border-radius:999px;font-size:12px;font-weight:700}.status-badge.ok{background:#e7f1ea;color:#365a40}.status-badge.warn{background:#f6ecd9;color:#7a5a1f}.ai-result{margin-top:18px;padding:15px;border-radius:12px;background:#f7f9f7;border:1px solid var(--line);display:flex;flex-direction:column;gap:7px}.ai-result code{font-size:14px;white-space:pre-wrap}

.ai-generator-form{display:grid;gap:16px}.generator-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.generator-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.generator-actions small{color:var(--muted)}.generated-list{display:grid;gap:16px}.generated-card{border:1px solid var(--line);border-radius:14px;padding:18px;background:#fcfdfb;display:grid;gap:13px}.generated-card-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.save-toggle{display:flex;grid-template-columns:auto 1fr;align-items:center;gap:8px}.save-toggle input{width:auto}.preview-grid{display:grid;grid-template-columns:minmax(0,2fr) minmax(110px,.5fr) minmax(110px,.5fr);gap:10px}.preview-two-col{display:grid;grid-template-columns:1fr 1fr;gap:10px}.save-generated-bar{position:sticky;bottom:12px;margin-top:18px;padding:14px 16px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.96);box-shadow:0 12px 34px rgba(26,38,32,.12);display:flex;align-items:center;justify-content:space-between;gap:16px}.save-generated-bar div{display:flex;flex-direction:column}.save-generated-bar small{color:var(--muted)}
@media(max-width:980px){.generator-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.preview-grid{grid-template-columns:1fr 1fr}.preview-grid label:first-child{grid-column:1/-1}}
@media(max-width:680px){.generator-grid,.preview-grid,.preview-two-col{grid-template-columns:1fr}.preview-grid label:first-child{grid-column:auto}.save-generated-bar{position:static;flex-direction:column;align-items:stretch}.save-generated-bar .btn{width:100%}}

.lesson-meta-form{max-width:820px}.lesson-layout{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:18px;align-items:start}.lesson-main{display:grid;gap:18px}.lesson-builder-card{padding-bottom:18px}.block-list{display:grid;gap:12px}.content-block{display:grid;grid-template-columns:38px minmax(0,1fr);gap:10px;border:1px solid var(--line);border-radius:14px;background:#fcfdfb;padding:10px;transition:.15s ease}.content-block.dragging{opacity:.45;transform:scale(.995)}.block-handle{display:grid;place-items:center;align-self:stretch;border-radius:10px;background:#f0f3ef;color:var(--muted);font-size:22px;cursor:grab;user-select:none}.block-handle:active{cursor:grabbing}.block-body{min-width:0}.block-head{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}.block-head>div{display:flex;align-items:center;gap:9px;flex-wrap:wrap}.block-head details{position:relative}.block-head summary{cursor:pointer;color:var(--brand);font-size:13px}.block-head details[open]{width:min(620px,72vw)}.block-edit-form{margin-top:12px;padding:14px;border:1px solid var(--line);border-radius:12px;background:#fff;display:grid;gap:11px}.block-edit-actions{display:flex;justify-content:flex-end}.danger-link{color:var(--danger)!important;margin-top:9px}.lesson-text-preview{white-space:pre-wrap;margin-top:12px;color:#3c443e}.callout-preview{background:var(--brand-soft);padding:14px;border-radius:12px;border-left:4px solid var(--brand)}.lesson-heading-preview{margin:12px 0 2px}.media-placeholder{margin-top:12px;border:1px dashed #cfd6cf;border-radius:12px;padding:18px;background:#f8faf7;display:flex;flex-direction:column;gap:4px;color:#46504a}.media-placeholder small{color:var(--muted);overflow-wrap:anywhere}.exercise-reference{margin-top:12px;padding:14px;border-radius:12px;background:#f4f7f4;display:grid;gap:3px}.exercise-reference span{color:var(--muted);font-size:13px}.exercise-reference a{color:var(--brand);font-size:13px;margin-top:5px;text-decoration:none}.add-block-panel{position:static}.reorder-status{min-height:20px;margin-top:9px;color:var(--muted);font-size:12px}.empty.compact{padding:14px}.block-list:has(.content-block) #emptyBlocks{display:none}
@media(max-width:1050px){.lesson-layout{grid-template-columns:1fr}.add-block-panel{position:static}}
@media(max-width:760px){.content-block{grid-template-columns:30px minmax(0,1fr)}.block-head{flex-direction:column}.block-head details[open]{width:100%}.block-handle{font-size:18px}}

.lesson-preview-list{margin-top:18px}.lesson-preview-card{border-left:4px solid var(--brand)}.nested-exercise{margin-top:6px;padding:16px;border-radius:12px;background:#f4f7f4;border:1px solid var(--line)}.nested-exercise h3{margin:0 0 3px;font-size:16px}

.ai-lesson-panel{position:static;margin-bottom:18px}.ai-note{display:block;color:var(--muted);font-size:12px;line-height:1.4}.exercise-preview{margin-top:8px;border-top:1px solid var(--line);padding-top:8px}.exercise-preview summary{cursor:pointer;color:var(--brand);font-size:13px}.exercise-preview-body{margin-top:9px;padding:12px;border-radius:10px;background:#fff;border:1px solid var(--line)}.exercise-preview-body p{margin:0 0 8px;white-space:pre-wrap}.exercise-preview-body pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#f7f9f7;border-radius:8px;padding:10px;font:inherit;font-size:13px;margin:8px 0}.correct-answer,.exercise-feedback{margin-top:8px;font-size:13px}.correct-answer{color:#365a40}.exercise-feedback{color:var(--muted)}
@media(max-width:1050px){.ai-lesson-panel{position:static}}

.lesson-main{grid-column:1;grid-row:1 / span 2}.ai-lesson-panel{grid-column:2;grid-row:1}.add-block-panel{grid-column:2;grid-row:2}
@media(max-width:1050px){.lesson-main,.ai-lesson-panel,.add-block-panel{grid-column:auto;grid-row:auto}}

.block-ai-edit summary{color:var(--brand)!important;font-weight:650}.block-ai-edit .block-edit-form{background:#f8fbfa;border-color:#dce7e3}.block-head>details{margin-left:6px}

.ai-usage-grid{grid-template-columns:repeat(4,minmax(140px,1fr));margin-bottom:16px}.ai-usage-grid .stat small{display:block;color:var(--muted);font-size:12px;margin-top:2px}.pricing-note{display:grid;gap:3px;padding:13px 15px;border-radius:12px;background:#f7f9f7;border:1px solid var(--line);font-size:13px}.pricing-note span{color:var(--muted)}.usage-breakdown{display:grid;margin-top:14px;border-top:1px solid var(--line)}.usage-row{display:flex;justify-content:space-between;gap:18px;padding:12px 2px;border-bottom:1px solid var(--line)}.usage-row>div{display:flex;flex-direction:column}.usage-row small,.usage-values span{color:var(--muted);font-size:12px}.usage-values{text-align:right}
@media(max-width:850px){.ai-usage-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:480px){.ai-usage-grid{grid-template-columns:1fr}.usage-row{flex-direction:column}.usage-values{text-align:left}}

.usage-section-title{margin-top:16px;font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}

.btn.danger{background:var(--danger);border-color:var(--danger);color:#fff}.btn.danger-outline{border-color:#d7bcbc;color:var(--danger);background:#fff}.lesson-list-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:14px;align-items:center;border-top:1px solid var(--line);padding:4px 0}.lesson-list-link{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 2px;color:var(--text);text-decoration:none}.lesson-list-link>div{display:flex;flex-direction:column}.lesson-list-link small{color:var(--muted);margin-top:2px}.lesson-delete-options{position:relative}.lesson-delete-options>summary{cursor:pointer;color:var(--danger);font-size:13px;list-style:none}.lesson-delete-options>summary::-webkit-details-marker{display:none}.danger-menu{position:absolute;right:0;top:28px;width:280px;padding:14px;border:1px solid var(--line);border-radius:12px;background:#fff;box-shadow:0 14px 40px rgba(26,38,32,.14);z-index:10;display:grid;gap:9px}.danger-menu p{margin:0 0 2px;font-size:13px;color:var(--muted)}.lesson-danger-zone{border-color:#ead4d4}.lesson-danger-zone h2{color:var(--danger)}.lesson-danger-zone form+form{margin-top:9px}
.lesson-main{grid-column:1;grid-row:1 / span 4}.ai-lesson-panel{grid-column:2;grid-row:1}.lesson-danger-zone{grid-column:2;grid-row:2}.ai-create-block-panel{grid-column:2;grid-row:3}.lesson-layout>.add-block-panel:not(.ai-lesson-panel):not(.lesson-danger-zone):not(.ai-create-block-panel){grid-column:2;grid-row:4}
@media(max-width:1050px){.lesson-main,.ai-lesson-panel,.lesson-danger-zone,.ai-create-block-panel,.lesson-layout>.add-block-panel:not(.ai-lesson-panel):not(.lesson-danger-zone):not(.ai-create-block-panel){grid-column:auto;grid-row:auto}.danger-menu{position:static;width:100%;margin-top:8px}}
@media(max-width:650px){.lesson-list-row{grid-template-columns:1fr}.lesson-delete-options{padding:0 2px 10px}}

.source-input-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(260px,.5fr);gap:12px}.source-preview{margin:14px 0 18px;padding:15px;border:1px solid var(--line);border-radius:13px;background:#f8faf8;display:grid;gap:12px}.source-preview>div{display:flex;flex-direction:column}.source-preview small{color:var(--muted)}.source-preview audio{width:100%;max-width:640px}.source-preview details summary{cursor:pointer;color:var(--brand);font-size:13px}.source-text-preview{white-space:pre-wrap;margin-top:10px;padding:13px;background:#fff;border:1px solid var(--line);border-radius:10px;max-height:320px;overflow:auto}.source-input-grid input[type=file]{padding:9px;background:#fff}
@media(max-width:760px){.source-input-grid{grid-template-columns:1fr}}

.exercise-source-box{padding:14px;border:1px solid #dce7e3;border-radius:12px;background:#f8fbfa;display:grid;gap:10px}.exercise-source-item{display:grid;gap:8px}.exercise-source-item>span{font-size:13px;color:var(--muted)}.exercise-source-item audio{width:100%}.exercise-source-item details summary{cursor:pointer;color:var(--brand);font-size:13px}

.header-actions{display:flex;gap:10px;flex-wrap:wrap}.bank-breadcrumbs{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:-8px 0 18px;padding:0}.bank-breadcrumbs a{color:var(--brand);text-decoration:none}.bank-breadcrumbs span{color:var(--muted)}.bank-toolbar{display:flex;justify-content:space-between;gap:14px;align-items:flex-start;margin-bottom:18px}.filters.compact{margin:0;justify-content:flex-end}.folder-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.folder-card{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:12px;align-items:center;padding:18px;border:1px solid var(--line);border-radius:14px;background:var(--surface);color:var(--text);text-decoration:none;box-shadow:var(--shadow)}.folder-card:hover{border-color:#cfd9d5}.folder-card>div{display:flex;flex-direction:column;min-width:0}.folder-card small{color:var(--muted)}.folder-icon{font-size:24px;color:var(--brand)}.bank-section{margin-bottom:18px}.bank-table-title{padding:20px 20px 0}.bank-content-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.content-card{display:grid;gap:7px;padding:16px;border:1px solid var(--line);border-radius:13px;color:var(--text);text-decoration:none;background:#fcfdfb}.content-kind{text-transform:uppercase;letter-spacing:.07em;font-size:11px;font-weight:800;color:var(--brand)}.content-card small{color:var(--muted)}.content-card-meta{display:flex;gap:10px;flex-wrap:wrap;color:var(--muted);font-size:12px}.activity-editor{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(320px,.6fr);gap:18px;align-items:start}.activity-exercises-card{grid-column:1/-1}.activity-exercise-picker{display:grid;gap:8px;max-height:600px;overflow:auto}.exercise-pick-row{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:12px;align-items:center;padding:12px;border:1px solid var(--line);border-radius:11px;background:#fcfdfb}.exercise-pick-row input{width:auto}.exercise-pick-row>span:nth-child(2){display:flex;flex-direction:column}.exercise-pick-row small{color:var(--muted);font-weight:400}.input-suffix{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;border:1px solid #d9ded8;border-radius:10px;background:#fcfdfb}.input-suffix input{border:0;box-shadow:none!important}.input-suffix span{padding:0 12px;color:var(--muted)}.activity-list{display:grid}.activity-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;align-items:center;border-top:1px solid var(--line);padding:6px 0}.activity-row>a{display:flex;justify-content:space-between;align-items:center;gap:14px;color:var(--text);text-decoration:none;padding:9px 2px}.activity-row>a>div:first-child{display:flex;flex-direction:column}.activity-row small{color:var(--muted)}.activity-meta{display:flex;gap:7px;flex-wrap:wrap}
@media(max-width:1000px){.folder-grid,.bank-content-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.activity-editor{grid-template-columns:1fr}.activity-exercises-card{grid-column:auto}.bank-toolbar{flex-direction:column}.filters.compact{justify-content:flex-start}}
@media(max-width:650px){.folder-grid,.bank-content-grid{grid-template-columns:1fr}.header-actions{width:100%}.header-actions .btn{flex:1}.exercise-pick-row{grid-template-columns:auto minmax(0,1fr)}.exercise-pick-row>.pill{grid-column:2}.activity-row{grid-template-columns:1fr}.activity-row>a{align-items:flex-start;flex-direction:column}}

.speaking-settings,.hybrid-settings{display:grid;gap:10px;padding:14px;border:1px solid var(--line);border-radius:12px;background:#f8faf8}.speaking-settings h3,.hybrid-settings h3{margin:0;font-size:15px}.speaking-settings>small,.hybrid-settings>small{color:var(--muted);font-size:12px}

.auth-page{min-height:100vh;display:grid;place-items:center;padding:24px}.auth-main{width:min(440px,100%)}.auth-card{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:var(--shadow);display:grid;gap:22px}.auth-brand{display:flex;gap:11px;align-items:center}.auth-brand>div{display:flex;flex-direction:column}.auth-brand small,.auth-subtitle{color:var(--muted)}.auth-card h1{margin:2px 0 6px;font-size:32px}.auth-subtitle{margin:0}.logout-link{margin-top:8px;color:var(--brand);text-decoration:none}.access-summary{display:grid;gap:3px;padding:13px;border:1px solid var(--line);border-radius:11px;background:#f8faf8}.access-summary span{font-size:14px}.access-summary small{color:var(--muted)}.user-form-card{max-width:620px}.student-stats{grid-template-columns:repeat(2,minmax(140px,240px))}

.learner-kpis{grid-template-columns:repeat(4,minmax(140px,1fr))}.learner-overall-progress{margin-bottom:18px}.progress-track,.skill-bar-track{height:9px;border-radius:999px;background:#edf0ed;overflow:hidden}.progress-track span,.skill-bar-track span{display:block;height:100%;background:var(--brand);border-radius:inherit}.progress-track.large{height:12px}.dashboard-two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:18px}.skill-bars{display:grid;gap:14px}.skill-row{display:grid;grid-template-columns:minmax(110px,.8fr) minmax(120px,2fr) 52px;gap:12px;align-items:center}.skill-row>div:first-child{display:flex;flex-direction:column}.skill-row small{color:var(--muted)}.tutor-summary-grid{grid-template-columns:repeat(2,minmax(180px,280px))}.tutor-student-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.tutor-student-card{color:var(--text);text-decoration:none;display:grid;gap:14px}.tutor-card-head{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}.tutor-card-head>div{display:flex;flex-direction:column}.tutor-card-head small{color:var(--muted)}.mini-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.mini-metrics span{display:flex;flex-direction:column}.mini-metrics small{color:var(--muted);font-size:12px}.student-assignment-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.student-assignment-card{display:grid;grid-template-columns:auto minmax(0,1fr);gap:10px;align-items:center;padding:12px;border:1px solid var(--line);border-radius:11px;background:#fcfdfb}.student-assignment-card input{width:auto}.student-assignment-card span{display:flex;flex-direction:column}.student-assignment-card small{color:var(--muted)}.student-role-fields{display:grid;gap:10px;padding:14px;border:1px solid var(--line);border-radius:12px;background:#f8faf8}.student-role-fields h3{margin:0;font-size:15px}.student-role-fields p{margin:0;color:var(--muted);font-size:13px}
@media(max-width:900px){.learner-kpis{grid-template-columns:repeat(2,1fr)}.dashboard-two-col,.tutor-student-grid,.student-assignment-grid{grid-template-columns:1fr}}@media(max-width:520px){.learner-kpis{grid-template-columns:1fr}.skill-row{grid-template-columns:1fr}.mini-metrics{grid-template-columns:1fr 1fr 1fr}}

.assignment-editor{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(320px,.6fr);gap:18px;align-items:start}.assignment-help{padding:14px;border:1px solid var(--line);border-radius:12px;background:#f8faf8;font-size:13px}.assignment-help p{margin:7px 0;color:var(--muted)}.activity-row-actions{display:flex;align-items:center;gap:12px}.activity-row-actions form{margin:0}
@media(max-width:900px){.assignment-editor{grid-template-columns:1fr}}

.student-assignment-list{display:grid}.student-assignment-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:18px;align-items:center;padding:16px 2px;border-top:1px solid var(--line)}.student-assignment-main{display:flex;flex-direction:column;gap:3px}.student-assignment-main small{color:var(--muted)}.student-assignment-actions{display:flex;gap:10px;align-items:center}.student-lesson{display:grid;gap:14px;max-width:980px}.student-lesson-block{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}.student-lesson-block h2,.student-lesson-block h3{margin-top:0}.heading-block{background:transparent;border:0;box-shadow:none;padding:8px 2px}.media-student-block{display:grid;gap:12px}.media-student-block img{max-width:100%;border-radius:12px}.media-student-block audio{width:100%}.media-student-block video{display:block;width:100%;max-width:100%;max-height:70vh;border-radius:12px;background:#111}.exercise-student-block{border-left:4px solid var(--brand)}.exercise-coming-soon{margin-top:12px;padding:12px;border-radius:10px;background:#f7f9f7;color:var(--muted);font-size:13px}
@media(max-width:700px){.student-assignment-row{grid-template-columns:1fr}.student-assignment-actions{justify-content:space-between}.student-assignment-actions .btn{width:auto}}

.reading-card-settings{display:grid;gap:10px;padding:13px;border:1px solid var(--line);border-radius:12px;background:#f8faf8}.reading-card-settings>small{color:var(--muted)}.inline-check{display:flex;grid-template-columns:auto 1fr;align-items:center;gap:8px}.inline-check input{width:auto}.reading-card-preview{display:grid;gap:8px;margin-top:10px}.mini-reading-card{padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:#fff;font-size:14px}.reading-cards-block{padding:24px}.reading-cards-carousel{display:grid;gap:16px}.reading-card-stage{position:relative;min-height:260px;display:grid;place-items:center;overflow:hidden;border-radius:18px;background:#fbfcfa;border:1px solid var(--line)}.reading-card-slide{grid-area:1/1;width:100%;min-height:260px;padding:34px;display:none;place-items:center;align-content:center;gap:18px;text-align:center}.reading-card-slide.is-active{display:grid}.reading-card-text{font-weight:700;line-height:1.3;letter-spacing:.01em;max-width:900px}.font-medium .reading-card-text{font-size:clamp(28px,4vw,42px)}.font-large .reading-card-text{font-size:clamp(36px,5vw,56px)}.font-xlarge .reading-card-text{font-size:clamp(44px,6vw,68px)}.font-xxlarge .reading-card-text{font-size:clamp(52px,7vw,82px)}.reading-card-image{max-width:min(360px,80%);max-height:240px;object-fit:contain;border-radius:14px}.reading-card-controls{display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center}.reading-card-counter{text-align:center;color:var(--muted);font-weight:700}.reading-card-dots{display:flex;justify-content:center;gap:8px;flex-wrap:wrap}.reading-card-dot{width:9px;height:9px;border-radius:50%;background:#d9dfdb;cursor:pointer}.reading-card-dot.active{background:var(--brand)}.reading-card-slide.transition-fade.is-active{animation:readingFade .22s ease}.reading-card-slide.transition-slide.is-active{animation:readingSlide .24s ease}.reading-card-slide.transition-none.is-active{animation:none}@keyframes readingFade{from{opacity:0}to{opacity:1}}@keyframes readingSlide{from{opacity:0;transform:translateX(24px)}to{opacity:1;transform:translateX(0)}}@media(max-width:700px){.reading-card-stage,.reading-card-slide{min-height:220px}.reading-card-slide{padding:24px 18px}.reading-card-controls{grid-template-columns:1fr 1fr}.reading-card-counter{grid-column:1/-1;grid-row:1}.reading-card-controls .btn{width:100%}.reading-card-image{max-height:180px}}

.exercise-bank-picker{display:grid;gap:12px;padding:14px;border:1px solid var(--line);border-radius:12px;background:#f8faf8}
.exercise-bank-picker[hidden],.reading-card-settings[hidden],#standardBlockFields[hidden]{display:none!important}
.exercise-bank-filters{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.exercise-bank-actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.exercise-bank-actions span{margin-left:auto;color:var(--muted);font-size:12px}
.exercise-bank-list{display:grid;gap:7px;max-height:360px;overflow:auto;padding-right:3px}
.exercise-bank-item{display:grid;grid-template-columns:auto 1fr;gap:10px;align-items:start;padding:10px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer}
.exercise-bank-item:hover{border-color:#b9cac4}
.exercise-bank-item input{width:auto;margin-top:3px}
.exercise-bank-item span{display:grid;gap:3px}
.exercise-bank-item small{color:var(--muted);font-size:11px;line-height:1.3}
@media(max-width:650px){.exercise-bank-filters{grid-template-columns:1fr}}

.exercise-bank-item[hidden]{display:none!important}

/* Rich lesson content */
.rich-format-toolbar{display:flex;gap:6px;flex-wrap:wrap;margin:6px 0 7px}
.rich-format-toolbar button{border:1px solid var(--line);background:#fff;border-radius:8px;padding:6px 9px;font:inherit;font-size:12px;cursor:pointer}
.rich-format-toolbar button:hover{border-color:#a8beb7;background:#f5f9f7}
.format-help{display:block;margin-top:5px;color:var(--muted);font-size:11px}
.lesson-rich-content{font-size:17px;line-height:1.75;color:#25312d}
.lesson-rich-content p{margin:0 0 14px}
.lesson-rich-content p:last-child{margin-bottom:0}
.lesson-rich-content strong{font-weight:800;color:#18211e}
.lesson-rich-content ul,.lesson-rich-content ol{padding-left:24px;margin:12px 0}
.lesson-rich-content blockquote{margin:16px 0;padding:12px 16px;border-left:4px solid var(--brand);background:#f7faf8;border-radius:8px}
.lesson-rich-content .content-center{text-align:center;margin:16px 0}
.lesson-rich-content table{width:100%;border-collapse:collapse;margin:18px 0;background:#fff;border-radius:10px;overflow:hidden}
.lesson-rich-content th,.lesson-rich-content td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.lesson-rich-content th{background:#eef4f1;font-weight:800}

/* Reading cards: calmer, clearer and responsive */
.reading-cards-block{padding:22px}
.reading-card-stage{min-height:230px;background:linear-gradient(180deg,#ffffff,#f7faf8);border:1px solid #dce7e2;box-shadow:inset 0 1px 0 rgba(255,255,255,.8)}
.reading-card-slide{min-height:230px;padding:34px 42px}
.reading-card-text{max-width:760px;font-weight:750;line-height:1.38;letter-spacing:0;text-wrap:balance}
.font-medium .reading-card-text{font-size:clamp(23px,3vw,34px)}
.font-large .reading-card-text{font-size:clamp(28px,3.8vw,42px)}
.font-xlarge .reading-card-text{font-size:clamp(34px,4.7vw,52px)}
.font-xxlarge .reading-card-text{font-size:clamp(40px,5.5vw,62px)}
.reading-card-text br{display:block;content:"";margin-top:.28em}
.reading-card-controls .btn{min-width:118px}

/* Student exercise player */
.student-lesson-form{max-width:1040px}
.student-lesson{max-width:1040px;gap:20px}
.exercise-student-block{padding:26px 28px;border-left:0;border-top:4px solid var(--brand);background:#fff}
.exercise-student-head{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:8px}
.exercise-points{font-size:12px;color:var(--muted);background:#f3f6f4;border-radius:999px;padding:5px 9px}
.exercise-prompt{font-size:17px;line-height:1.55;margin:8px 0 18px}
.student-options{display:grid;gap:10px}
.student-option{display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:center;padding:13px 15px;border:1px solid var(--line);border-radius:12px;background:#fbfcfb;cursor:pointer;transition:.15s}
.student-option:hover{border-color:#a9bfb7;background:#f6faf8}
.student-option:has(input:checked){border-color:var(--brand);background:#eef6f3;box-shadow:0 0 0 2px rgba(45,100,91,.08)}
.student-option input{width:auto;margin:0}
.student-answer-field{display:grid;gap:7px;font-weight:700}
.student-answer-field input,.student-answer-field textarea{font-size:16px;background:#fff}
.exercise-mode-note{display:block;margin-top:8px;color:var(--muted)}
.student-answer-feedback{display:grid;gap:4px;margin-top:16px;padding:12px 14px;border-radius:10px;font-size:14px}
.student-answer-feedback.is-correct{background:#edf8f0;color:#285c35}
.student-answer-feedback.is-wrong{background:#fff3f0;color:#8a3c2f}
.student-answer-feedback.is-review{background:#f5f5f2;color:#605d4e}
.student-lesson-submit{display:flex;justify-content:flex-end;align-items:center;gap:16px;margin:24px 0 46px;max-width:1040px}
.student-submit-btn{min-width:220px;padding:13px 20px;font-size:16px}
.lesson-result-summary{margin-right:auto;display:grid;gap:3px;padding:12px 15px;border:1px solid var(--line);border-radius:12px;background:#fff}
.lesson-result-summary span{color:var(--muted);font-size:12px}

@media(max-width:700px){
  .lesson-rich-content{font-size:16px}
  .reading-card-slide{padding:26px 20px}
  .font-large .reading-card-text{font-size:clamp(25px,8vw,36px)}
  .font-xlarge .reading-card-text{font-size:clamp(29px,9vw,42px)}
  .font-xxlarge .reading-card-text{font-size:clamp(34px,10vw,48px)}
  .exercise-student-block{padding:20px 18px}
  .student-lesson-submit{align-items:stretch;flex-direction:column}
  .student-submit-btn{width:100%}
  .lesson-result-summary{margin-right:0}
}

.math-block{display:flex;justify-content:center;align-items:center;margin:18px 0;padding:16px 20px;border:1px solid #dce7e2;border-radius:14px;background:#f8fbf9;overflow-x:auto}
.math-block span{font-size:clamp(28px,4vw,44px);font-weight:800;line-height:1.25;letter-spacing:.01em;text-align:center;white-space:normal}
.exercise-prompt .math-block{margin:14px 0 18px}
@media(max-width:700px){.math-block{padding:14px 12px}.math-block span{font-size:clamp(25px,8vw,36px)}}