/* Scoped lesson styles: RTL, public .dark, admin .dark-mode. */
.edul-shell,.edul-reader,.edul-dialog{--el-bg:#f6f7fb;--el-card:#fff;--el-ink:#172343;--el-muted:#58677e;--el-line:#dce2ef;--el-accent:#4948ba;--el-soft:#eeedff;--el-ok:#15704d;color:var(--el-ink);font-family:inherit;line-height:1.85}
.dark .edul-shell,.dark .edul-reader,.dark .edul-dialog,.dark-mode .edul-shell,.dark-mode .edul-reader,.dark-mode .edul-dialog{--el-bg:#111827;--el-card:#182236;--el-ink:#ecf1fb;--el-muted:#bdc9df;--el-line:#36445b;--el-accent:#b6b1ff;--el-soft:#2b2a50;--el-ok:#8bdfb2;color-scheme:dark}
.edul-reader[data-theme=sand]{--el-accent:#946022;--el-soft:#fff4df}.edul-reader[data-theme=forest]{--el-accent:#22664f;--el-soft:#e8f5ed}.dark .edul-reader[data-theme=sand],.dark-mode .edul-reader[data-theme=sand]{--el-accent:#edc382;--el-soft:#3c3020}.dark .edul-reader[data-theme=forest],.dark-mode .edul-reader[data-theme=forest]{--el-accent:#98dfb9;--el-soft:#193d33}
.edul-shell{background:var(--el-bg);max-width:1440px;padding:28px 22px;margin:auto;min-width:0}.edul-shell *, .edul-dialog *{box-sizing:border-box}.edul-shell [hidden],.edul-dialog [hidden]{display:none!important}.edul-shell a,.edul-dialog a{color:var(--el-accent);text-decoration:none}.edul-shell h1{font-size:clamp(1.6rem,3.6vw,2.6rem);line-height:1.5;font-weight:800;margin:.2em 0}.edul-shell h2,.edul-dialog h2{font-size:1.15rem;font-weight:800;margin:.4em 0 1em}.edul-heading{display:flex;align-items:center;justify-content:space-between;gap:22px;margin-bottom:24px}.edul-heading p{margin:4px 0;color:var(--el-muted)}.edul-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.edul-button,.edul-shell a.edul-button,.edul-dialog a.edul-button{border:1px solid transparent;border-radius:13px;background:#4948ba;color:#fff;display:inline-flex;align-items:center;justify-content:center;padding:10px 17px;min-height:44px;font:inherit;font-size:.85rem;font-weight:700;cursor:pointer;text-decoration:none;gap:8px}.edul-button.secondary{background:var(--el-card);border-color:var(--el-line);color:var(--el-ink)}.edul-button:hover:not(:disabled){filter:brightness(.94)}.edul-shell button:disabled,.edul-dialog button:disabled{opacity:.5;cursor:default}.edul-shell :focus-visible,.edul-dialog :focus-visible{outline:3px solid var(--el-accent);outline-offset:3px}.edul-panel,.edul-course-card{background:var(--el-card);border:1px solid var(--el-line);border-radius:22px;padding:22px;min-width:0;box-shadow:0 10px 36px #1c2c5d06}.edul-editor-layout{display:grid;grid-template-columns:250px minmax(0,1fr) 330px;gap:18px;align-items:start}.edul-editor-layout>.edul-panel{padding:18px}.edul-status,.edul-notice{background:var(--el-soft);border:1px solid var(--el-line);padding:13px 18px;border-radius:13px;margin-bottom:20px;color:var(--el-ink);overflow-wrap:anywhere}.edul-status.is-error{border-color:#c95858;background:#fff0ef;color:#852323}.dark .edul-status.is-error,.dark-mode .edul-status.is-error{background:#3b2028;color:#ffd2cf}.edul-muted,.edul-shell small{color:var(--el-muted);font-size:.8rem}.edul-field{display:flex;flex-direction:column;gap:7px;margin:16px 0;font-size:.85rem;font-weight:600}.edul-field input,.edul-field textarea,.edul-field select,.edul-shell form.edul-actions>input{background:var(--el-bg);color:var(--el-ink);border:1px solid var(--el-line);border-radius:11px;font:inherit;font-weight:400;padding:10px 12px;max-width:100%;min-width:0;min-height:44px}.edul-field input,.edul-field textarea,.edul-field select{width:100%}.edul-field textarea{resize:vertical;line-height:1.9}.edul-shell hr{border:0;border-top:1px solid var(--el-line);margin:24px 0}.edul-part-item{padding:12px;border:1px solid transparent;border-radius:14px;margin-bottom:10px;background:var(--el-bg)}.edul-part-item.is-selected,.edul-edit-block.is-selected{border-color:var(--el-accent);background:var(--el-soft)}.edul-part-select,.edul-block-select{background:none;border:0;cursor:pointer;display:block;text-align:start;font:inherit;font-weight:700;color:var(--el-ink);padding:4px 0;min-height:44px;overflow-wrap:anywhere;width:100%}.edul-mini-actions{display:flex;gap:5px;flex-wrap:wrap;margin-top:12px}.edul-mini-actions .edul-button{padding:5px 8px;font-size:.69rem;min-height:34px}.edul-edit-block{border:1px solid var(--el-line);border-radius:17px;padding:16px;margin:16px 0}.edul-tag{display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;background:var(--el-soft);color:var(--el-accent);font-size:.73rem;font-weight:700}.edul-block-excerpt{font-size:.82rem;white-space:pre-line;overflow-wrap:anywhere;margin:10px 0;color:var(--el-muted)}.edul-dialog{border:1px solid var(--el-line);background:var(--el-card);width:min(950px,94vw);max-height:min(900px,90vh);padding:26px;border-radius:24px;margin:auto;overflow:auto}.edul-dialog::backdrop{background:#10162bbb;backdrop-filter:blur(3px)}.edul-dialog>form{text-align:end;margin-bottom:14px;position:sticky;top:-26px;padding:8px 0;background:var(--el-card);z-index:2}.edul-library-grid,.edul-course-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.edul-library-item{background:var(--el-bg);border:1px solid var(--el-line);border-radius:16px;padding:20px;text-align:start;color:var(--el-ink);cursor:pointer;line-height:1.8}.edul-library-item strong,.edul-library-item small{display:block}.edul-library-item strong{font-size:.95rem;margin-bottom:10px}.edul-library-item small{color:var(--el-muted);font-size:.77rem}.edul-library-item:hover{border-color:var(--el-accent);background:var(--el-soft)}.edul-resource-option{display:block;width:100%;padding:16px;margin:8px 0;text-align:start;border:1px solid var(--el-line);border-radius:13px;background:var(--el-bg);color:var(--el-ink);cursor:pointer;font:inherit}.edul-resource-option:hover{border-color:var(--el-accent)}.edul-shell [data-inspector]{scroll-margin-top:100px}
.edul-public{padding-top:100px;padding-bottom:90px;background:var(--el-bg)}.edul-hero{padding:30px;border:1px solid var(--el-line);border-radius:26px;background:linear-gradient(130deg,var(--el-card),var(--el-soft));margin-bottom:24px}.edul-hero p{max-width:900px;color:var(--el-muted)}.edul-breadcrumb{display:flex;gap:10px;flex-wrap:wrap;font-size:.8rem;margin-bottom:18px}.edul-reader-layout{display:grid;grid-template-columns:285px minmax(0,1fr);gap:26px;align-items:start}.edul-outline{position:sticky;top:95px}.edul-outline summary{cursor:pointer;font-weight:800;min-height:44px}.edul-outline-list{list-style:none;margin:14px 0 0;padding:0}.edul-outline-list li{margin:5px 0}.edul-outline-list a{padding:12px;display:flex;gap:10px;border-radius:12px;color:var(--el-ink);border:1px solid transparent;font-size:.87rem;line-height:1.7;overflow-wrap:anywhere}.edul-outline-list .is-current a{background:var(--el-soft);border-color:var(--el-accent)}.edul-outline-list small{display:block}.edul-outline-list .is-done a{color:var(--el-ok)}.edul-number{border-radius:50%;background:var(--el-soft);width:28px;height:28px;flex:0 0 28px;text-align:center;font-size:.8rem;color:var(--el-accent)}.edul-reader{min-width:0;background:var(--el-card);border:1px solid var(--el-line);border-radius:24px;padding:clamp(18px,3vw,40px)}.edul-reader>h2{font-size:clamp(1.4rem,2.5vw,2rem);margin-bottom:26px;font-weight:800}.edul-block{margin:0 0 30px;overflow-wrap:anywhere;font-size:1.03rem;line-height:2.05}.edul-block h3{font-size:1.16rem;line-height:1.6;font-weight:800;margin:0 0 14px;color:var(--el-ink)}.edul-block p{margin:12px 0}.edul-block ul{list-style:disc;padding-inline-start:25px}.edul-block li{padding-inline-start:5px;margin:8px 0}.edul-block img,.edul-block video{max-width:100%;height:auto;display:block;border-radius:16px;margin:auto}.edul-block video{width:100%}.edul-block audio{width:100%;max-width:100%}.edul-block figure{margin:0}.edul-block figcaption{font-size:.84rem;color:var(--el-muted);margin-top:10px;text-align:center}.edul-block details{border:1px solid var(--el-line);padding:18px 22px;border-radius:16px}.edul-block summary{font-weight:700;cursor:pointer;color:var(--el-accent);list-style:revert;display:list-item}.edul-block details[open] summary{margin-bottom:15px}.edul-block-callout{border-inline-start:4px solid var(--el-accent);border-radius:16px;padding:22px;background:var(--el-soft)}.edul-block blockquote{border-inline-start:3px solid var(--el-accent);padding:16px 25px;margin:0;background:var(--el-bg);border-radius:12px;font-size:1.1rem}.edul-block cite{display:block;color:var(--el-muted);font-size:.8rem;font-style:normal;margin-top:14px}.edul-kpi,.edul-gallery{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(190px,100%),1fr));gap:16px}.edul-kpi .edul-item{border-radius:18px;padding:22px;background:var(--el-soft);border:1px solid var(--el-line);text-align:center}.edul-kpi b{display:block;font-size:2.1rem;font-weight:800;color:var(--el-accent)}.edul-kpi strong{font-size:.92rem}.edul-kpi p{font-size:.8rem;color:var(--el-muted)}.edul-timeline{padding-inline-start:10px}.edul-timeline .edul-item{padding:4px 25px 25px;border-inline-start:2px solid var(--el-line);position:relative}.edul-timeline .edul-item::before{content:"";position:absolute;inset-inline-start:-7px;top:12px;width:12px;height:12px;border-radius:50%;background:var(--el-accent);box-shadow:0 0 0 5px var(--el-soft)}.edul-timeline b{display:block;color:var(--el-accent);font-size:.9rem}.edul-timeline strong{font-size:1.05rem}.edul-timeline p{color:var(--el-muted);font-size:.92rem;margin:6px 0}.edul-table-scroll{overflow:auto;border:1px solid var(--el-line);border-radius:15px;max-width:100%}.edul-table-scroll table{width:100%;border-collapse:collapse;min-width:300px}.edul-table-scroll td,.edul-table-scroll th{padding:14px 18px;border-bottom:1px solid var(--el-line);text-align:start;font-size:.92rem}.edul-table-scroll th{background:var(--el-soft);font-weight:700}.edul-table-scroll small{display:block}.edul-shell>.edul-table-scroll{margin:22px 0}.edul-table-scroll tr:last-child td{border-bottom:0}.edul-video{width:100%;aspect-ratio:16/9;border:0;border-radius:16px}.edul-block-file,.edul-block-quiz{border:1px solid var(--el-line);border-radius:18px;padding:24px;background:var(--el-bg)}.edul-block .edul-actions{margin-top:18px;font-size:.8rem}.edul-finish{border-top:1px solid var(--el-line);margin-top:30px;padding-top:25px}.edul-read-confirm{display:flex;gap:12px;align-items:start;margin-bottom:20px;font-size:.9rem;cursor:pointer}.edul-read-confirm input{margin-top:7px;min-width:20px;width:20px;height:20px;accent-color:#4948ba}.edul-progress{height:8px;width:100%;border:0;border-radius:99px;overflow:hidden;accent-color:#4948ba;display:block;background:var(--el-line);margin:12px 0}.edul-progress::-webkit-progress-bar{background:var(--el-line)}.edul-progress::-webkit-progress-value{background:#4948ba;border-radius:99px}.edul-progress::-moz-progress-bar{background:#4948ba;border-radius:99px}.edul-course-card{display:flex;flex-direction:column;gap:12px}.edul-course-card h2{margin:0;font-size:1.4rem}.edul-course-card p{color:var(--el-muted);font-size:.9rem}.edul-course-card .edul-button{align-self:start;margin-top:auto}.edul-course-list{display:grid;gap:18px}.edul-unit-title{padding:14px 6px 0;font-weight:800!important;color:var(--el-accent)}.edul-course-lesson{padding:22px;background:var(--el-card);border:1px solid var(--el-line);border-radius:20px}.edul-course-lesson h3{margin-bottom:12px;font-weight:800}.edul-course-lesson .edul-outline-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}.edul-course-filters{display:flex;gap:15px;align-items:end;flex-wrap:wrap;margin-bottom:25px}.edul-course-filters .edul-field{flex:1;min-width:160px;margin:0}
@media(max-width:1100px){.edul-editor-layout{grid-template-columns:220px minmax(0,1fr)}.edul-editor-layout>.edul-panel:last-child{grid-column:2}.edul-heading{align-items:flex-start;flex-wrap:wrap}.edul-library-grid,.edul-course-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){.edul-shell{padding:20px 12px}.edul-public{padding-top:85px;padding-bottom:90px}.edul-editor-layout,.edul-reader-layout{grid-template-columns:minmax(0,1fr)}.edul-editor-layout>.edul-panel:last-child{grid-column:auto}.edul-outline{position:static}.edul-hero{padding:22px 18px}.edul-heading{gap:14px}.edul-panel{padding:18px}.edul-dialog{padding:18px}.edul-course-grid,.edul-course-lesson .edul-outline-list{grid-template-columns:1fr}.edul-block{font-size:.98rem}.edul-outline-list{max-height:320px;overflow:auto}.edul-mini-actions .edul-button{min-height:40px}.edul-course-filters>.edul-button{width:100%}}
@media(max-width:420px){.edul-library-grid{grid-template-columns:1fr}.edul-actions .edul-button{flex-grow:1}.edul-button{padding:9px 12px}.edul-reader{padding:18px 14px}.edul-block-callout,.edul-block-file,.edul-block-quiz{padding:18px}}
@media(prefers-reduced-motion:reduce){.edul-shell *{scroll-behavior:auto!important;transition:none!important}}
/* Phase 2B.1: visual editing, media transfer and immediate lesson practice. */
.edul-row-card,.edul-question-preview{border:1px solid var(--el-line);border-radius:15px;padding:14px;margin:14px 0;background:var(--el-bg)}.edul-row-card .edul-field{margin:10px 0}.edul-row-editor>.edul-button{margin:5px}.edul-rich-toolbar{display:flex;gap:5px;flex-wrap:wrap;border:1px solid var(--el-line);border-bottom:0;padding:8px;border-radius:12px 12px 0 0;background:var(--el-soft);margin-top:16px}.edul-rich-toolbar .edul-button{font-size:.73rem;padding:5px 9px;min-height:36px}.edul-rich-editor{min-height:210px;max-height:600px;overflow:auto;border:1px solid var(--el-line);border-radius:0 0 12px 12px;padding:15px;background:var(--el-card);line-height:1.9;overflow-wrap:anywhere}.edul-rich-editor p{margin:10px 0}.edul-rich-editor ul,.edul-rich-editor ol{padding-inline-start:22px}.edul-rich-editor ul{list-style:disc}.edul-rich-editor ol{list-style:decimal}.edul-prose ol{list-style:decimal;padding-inline-start:24px}.edul-media-tools{padding:12px;border:1px dashed var(--el-line);border-radius:14px;margin:12px 0}.edul-media-tools progress{width:100%;height:12px;accent-color:var(--el-accent);margin-top:12px}.edul-media-tools p{margin:8px 0 0}.edul-media-tools .edul-button{font-size:.72rem;padding:7px 10px}.edul-edit-block.is-dragging,.edul-part-item.is-dragging{opacity:.45}.edul-preview-frame{display:block;width:100%;max-width:100%;height:65vh;border:1px solid var(--el-line);border-radius:16px;margin:18px auto;background:#fff}.edul-resource-choice{padding:14px;border:1px solid var(--el-line);border-radius:14px;margin:10px 0;background:var(--el-bg);display:flex;align-items:start;gap:12px;flex-wrap:wrap}.edul-resource-choice>label{display:flex;align-items:start;gap:12px;flex:1;min-width:180px;cursor:pointer}.edul-resource-choice input{width:20px;height:20px;flex:0 0 20px;margin-top:6px;accent-color:#4948ba}.edul-resource-choice .edul-question-preview{flex-basis:100%;width:100%}.edul-selection-counter{position:sticky;top:28px;background:var(--el-soft);border-radius:12px;padding:12px;font-weight:bold;z-index:1}.edul-selection-counter:empty{display:none}.edul-question-preview img{display:block;max-width:100%;max-height:340px;object-fit:contain;margin:12px auto}.edul-question-preview ol{list-style:decimal;padding-inline-start:22px}.edul-question-preview .is-correct{color:var(--el-ok);font-weight:bold}.edul-selected-questions{list-style:none;padding:0;max-height:360px;overflow:auto}.edul-selected-questions li{display:flex;gap:5px;align-items:center;padding:8px 0;border-bottom:1px solid var(--el-line)}.edul-selected-questions .edul-button{padding:4px 7px;min-height:34px;font-size:.7rem}.edul-inline-link{border:0;color:var(--el-accent);background:transparent;font:inherit;cursor:pointer;margin-inline-end:auto}.edul-set-question{padding:20px 0;border-top:1px dashed var(--el-line)}.edul-block-question,.edul-block-practice_set{border:1px solid var(--el-line);border-radius:20px;padding:clamp(14px,2vw,25px);background:var(--el-bg)}.edul-interactive{scroll-margin-top:110px}.edul-interactive h4{font-size:1.05rem;font-weight:800;line-height:1.9;white-space:pre-line;margin:12px 0 20px}.edul-practice-options{display:grid;gap:12px}.edul-practice-option{display:block;width:100%;border:1px solid var(--el-line);border-radius:14px;padding:15px 18px;background:var(--el-card);font:inherit;text-align:start;color:var(--el-ink);line-height:1.8;cursor:pointer}.edul-practice-option:hover:enabled{border-color:var(--el-accent);background:var(--el-soft)}.edul-shell .edul-practice-option:disabled{opacity:1;cursor:default}.edul-practice-option.is-correct{border-color:var(--el-ok);box-shadow:inset 4px 0 var(--el-ok)}.edul-practice-option.is-wrong{border-color:#b65358;box-shadow:inset 4px 0 #b65358}.edul-question-image{max-width:100%;max-height:460px;object-fit:contain;margin:14px auto!important}.edul-practice-feedback{border-radius:17px;background:var(--el-card);border:1px solid var(--el-line);padding:20px;margin-top:18px;font-size:.9rem}.edul-practice-feedback>strong{font-size:1.08rem;color:var(--el-ok)}.edul-practice-feedback.is-wrong>strong{color:#b65358}.edul-explanation-text{white-space:pre-line;border-inline-start:3px solid var(--el-accent);padding:8px 14px}.edul-peer{padding:13px;border-radius:12px;background:var(--el-soft);font-weight:700}.edul-history-note{font-size:.8rem;color:var(--el-muted)}.edul-practice-feedback ol{list-style:decimal;padding-inline-start:20px}.edul-practice-feedback li{padding:8px 0;white-space:pre-line}.edul-practice-feedback li small{display:block}.edul-study-summary{border:1px solid var(--el-line);border-radius:20px;background:linear-gradient(130deg,var(--el-card),var(--el-soft));padding:22px;margin-bottom:24px}.edul-study-summary h3{font-size:1.1rem;font-weight:800}.edul-study-summary .edul-button{font-size:.77rem}.edul-prose :is(h2,h3,h4){line-height:1.7;margin:18px 0 10px}.edul-prose a{text-decoration:underline}.edul-media-tools,.edul-rich-editor{max-width:100%}@media(max-width:760px){.edul-row-card{padding:12px}.edul-editor-layout>.edul-panel:last-child{border-top:4px solid var(--el-accent)}.edul-practice-feedback{padding:15px}.edul-resource-choice>label{min-width:140px}.edul-study-summary{padding:18px}}