:root{--bg:#eef1f4;--surface:#fff;--surface-soft:#f8fafb;--text:#0f1419;--muted:#5c6570;--line:#dde4ea;--teal:#007d7d;--teal-dark:#005f61;--teal-soft:#e6f4f4;--yellow:#e5a100;--green:#12875a;--red:#d63b4a;--shadow-sm:0 1px 2px #0f14190d;--shadow:0 8px 32px #0f141914;--sidebar-bg:#0c1218;--sidebar-border:#ffffff14;--radius-sm:8px;--radius-md:12px;--radius-lg:16px}*{box-sizing:border-box}html,body{max-width:100%;height:100%;overflow:hidden}body{background:var(--bg);color:var(--text);margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,input,textarea,select{font:inherit}button{cursor:pointer}.admin-shell{flex:1;grid-template-columns:292px minmax(0,1fr);min-height:0;display:grid;overflow:hidden}.sidebar{background:var(--sidebar-bg);color:#fff;border-right:1px solid var(--sidebar-border);flex-direction:column;height:100%;min-height:0;display:flex;overflow:hidden}.sidebar-header{flex-shrink:0;padding:18px 16px 12px}.sidebar-scroll{scrollbar-width:thin;scrollbar-color:#ffffff38 transparent;flex:1;min-height:0;padding:4px 12px 12px;overflow:hidden auto}.sidebar-scroll::-webkit-scrollbar{width:6px}.sidebar-scroll::-webkit-scrollbar-thumb{background:#fff3;border-radius:999px}.sidebar-scroll::-webkit-scrollbar-thumb:hover{background:#ffffff52}.brand{border-bottom:1px solid var(--sidebar-border);align-items:center;gap:12px;margin-bottom:14px;padding:4px 4px 16px;display:flex}.brand-mark{background:linear-gradient(145deg,#009898,#006b6b);border-radius:10px;place-items:center;width:40px;height:40px;font-size:15px;font-weight:800;display:grid;box-shadow:0 4px 12px #007d7d59}.brand-title{margin:0;font-size:17px;line-height:1.15}.brand-subtitle{color:#ffffff9e;margin:4px 0 0;font-size:12px}.nav{gap:8px;margin-top:22px;display:grid}.nav-item{color:#ffffffad;text-align:left;background:0 0;border:0;border-radius:8px;align-items:center;gap:11px;width:100%;min-height:42px;padding:0 12px;display:flex}.nav-item.is-active{color:#fff;background:#008b8b38}.main{min-width:0;padding:26px}.topbar{justify-content:space-between;align-items:center;gap:16px;margin-bottom:22px;display:flex}.topbar>*{min-width:0}.eyebrow{color:var(--teal);letter-spacing:.05em;text-transform:uppercase;margin:0 0 6px;font-size:13px;font-weight:800}.page-title{margin:0;font-size:30px;line-height:1.1}.page-description{color:var(--muted);margin:8px 0 0;font-size:14px}.pill-row{flex-wrap:wrap;gap:8px;display:flex}.pill{border:1px solid var(--line);min-width:0;max-width:100%;min-height:32px;color:var(--muted);overflow-wrap:anywhere;box-shadow:var(--shadow-sm);background:#fff;border-radius:999px;align-items:center;gap:7px;padding:0 12px;font-size:12px;font-weight:600;display:inline-flex}.pill svg{flex:none}.layout-grid{grid-template-columns:minmax(0,1fr) 360px;gap:20px;min-width:0;display:grid}.workspace{gap:20px;min-width:0;display:grid}.panel{border:1px solid var(--line);border-radius:var(--radius-md);background:var(--surface);min-width:0;box-shadow:var(--shadow-sm)}.panel-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:flex-start;gap:16px;padding:18px;display:flex}.panel-header>*{min-width:0}.panel-title{margin:0;font-size:18px}.panel-note{color:var(--muted);margin:6px 0 0;font-size:13px}.panel-body{min-width:0;padding:18px}.form-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;min-width:0;display:grid}.form-grid>*,.layout-grid>*,.content-map>*{min-width:0}.field{gap:7px;display:grid}.field label{color:#4b5560;font-size:13px;font-weight:800}.input,.textarea,.select{border:1px solid var(--line);width:100%;color:var(--text);background:#fff;border-radius:8px;padding:11px 12px}.textarea{resize:vertical;min-height:96px}.input:focus,.textarea:focus,.select:focus{border-color:var(--teal);outline:none;box-shadow:0 0 0 3px #008b8b24}.button-row{flex-wrap:wrap;gap:10px;min-width:0;display:flex}.button{border:1px solid var(--line);max-width:100%;min-height:40px;color:var(--text);background:#fff;border-radius:8px;justify-content:center;align-items:center;gap:8px;padding:0 14px;font-weight:800;display:inline-flex}.button.primary{border-color:var(--teal);background:var(--teal);color:#fff}.button.publish{border-color:var(--yellow);background:var(--yellow);color:#fff}.button.ghost{background:0 0}.button:disabled{cursor:not-allowed;opacity:.45}.content-map{grid-template-columns:220px minmax(0,1fr);gap:14px;display:grid}.list-column{align-content:start;gap:8px;display:grid}.row-card{border:1px solid var(--line);text-align:left;background:#fff;border-radius:8px;gap:5px;width:100%;padding:12px;display:grid}.row-card.is-active{border-color:var(--teal);background:var(--teal-soft)}.row-title{font-weight:850}.row-meta{color:var(--muted);font-size:12px}.topic-rail{gap:12px;padding:4px 0 12px;display:flex;overflow-x:auto}.topic-card{min-height:132px;color:var(--text);background:#fff;border:2px solid #08a5ad;border-radius:8px;flex:0 0 128px;place-items:center;gap:8px;display:grid}.topic-card.is-active{color:#fff;background:linear-gradient(135deg,#15ad70,#74d9a8);border-color:#0000}.topic-icon{opacity:.82;border:12px solid;border-radius:14px;width:54px;height:54px;position:relative}.topic-icon:after{content:"";background:var(--yellow);width:35px;height:11px;position:absolute;bottom:-10px;right:-11px;transform:rotate(31deg)}.topic-name{font-weight:850}.block-stack{gap:12px;display:grid}.block-head{justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px;display:flex}.block-type{background:var(--teal-soft);color:var(--teal-dark);border-radius:999px;align-items:center;gap:7px;padding:6px 10px;font-size:12px;font-weight:850;display:inline-flex}.preview-column{align-content:start;gap:16px;min-width:0;display:grid;position:sticky;top:24px}.phone{background:#111;border-radius:36px;width:100%;max-width:360px;margin-inline:auto;padding:13px;box-shadow:0 26px 70px #0000002e}.phone-screen{background:#fff;border-radius:28px;min-height:640px;overflow:hidden}.mobile-preview{padding:34px 22px 18px}.mobile-title{color:var(--teal);margin:0;font-size:24px;line-height:1.15}.mobile-subtitle{color:#909399;margin:8px 0 12px;font-size:15px}.mobile-rule{background:#d5d7db;height:1px;margin:0 0 22px}.mobile-course{margin-bottom:28px}.mobile-course-head{justify-content:space-between;align-items:flex-start;gap:14px;display:flex}.mobile-course-head>div:first-child{min-width:0}.mobile-course h3{margin:0;font-size:19px}.mobile-course p{margin:4px 0 0;font-size:13px}.complete-label{color:#777b82;white-space:nowrap;flex:none;font-size:13px}.progress{background:#e9eaec;border-radius:999px;height:10px;margin:12px 0 16px;overflow:hidden}.progress>span{border-radius:inherit;background:var(--yellow);height:100%;display:block}.mobile-topic-row{gap:14px;display:flex;overflow:hidden}.mobile-topic{text-align:center;color:#111;flex:0 0 84px}.mobile-topic-box{background:#fff;border:2px solid #08a5ad;border-radius:8px;place-items:center;height:84px;display:grid}.mobile-topic:first-child .mobile-topic-box{color:#fff;background:linear-gradient(135deg,#15ad70,#74d9a8);border:0}.mobile-topic-label{margin-top:8px;font-size:13px;display:block}.lesson-preview{padding:28px 22px}.lesson-preview-head{color:var(--teal);border-bottom:1px solid #d5d7db;justify-content:space-between;align-items:center;margin-bottom:22px;padding-bottom:18px;display:flex}.lesson-card-preview{text-align:center;background:#f4f4f4;border-radius:8px;align-content:center;min-height:330px;padding:30px 24px;display:grid}.arabic-preview{color:var(--teal);direction:rtl;margin-bottom:38px;font-family:Times New Roman,serif;font-size:72px;font-weight:800}.paragraph-preview{font-size:22px;line-height:1.35}.pager{height:54px;color:var(--teal);background:#f1f1f1;border-radius:8px;justify-content:space-around;align-items:center;margin-top:18px;font-size:20px;font-weight:850;display:flex}.learned-preview{border:3px solid var(--yellow);color:#d89d00;border-radius:8px;place-items:center;height:60px;margin-top:18px;font-size:22px;font-weight:850;display:grid}.json-box{border:1px solid var(--line);color:#d9f7f2;white-space:pre-wrap;overflow-wrap:anywhere;background:#101820;border-radius:8px;min-width:0;max-width:100%;max-height:360px;margin:0;padding:14px;font-size:12px;line-height:1.5;overflow:auto}@media (max-width:1180px){.layout-grid{grid-template-columns:1fr}.preview-column{position:static}}@media (max-width:820px){html,body{overflow:auto}.admin-app{height:auto;min-height:100vh;overflow:visible}.admin-shell{grid-template-columns:1fr;overflow:visible}.sidebar{height:auto;max-height:none;overflow:visible}.sidebar-scroll{max-height:360px}.workspace{height:auto;overflow:visible}.main{padding:18px}.topbar,.panel-header,.mobile-course-head{display:grid}.form-grid,.content-map{grid-template-columns:1fr}}.workspace{background:var(--bg);height:100%;min-height:0;padding:28px 32px 48px;overflow:hidden auto}.workspace-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:20px;padding-bottom:18px;display:flex}.workspace-header h1{letter-spacing:-.02em;margin:0;font-size:26px;font-weight:700}.muted{color:var(--muted);margin:6px 0 0;font-size:14px}.sidebar-actions{gap:8px;display:grid}.tree{gap:4px;display:grid}.tree-row{align-items:stretch;gap:4px;display:flex}.tree-section-btn,.tree-group{color:#ffffffb8;text-align:left;background:0 0;border:0;border-radius:8px;flex:1;min-width:0;padding:10px 12px}.tree-reorder-btns{flex-direction:column;flex:none;gap:2px;display:flex}.tree-move-btn{color:#ffffff8c;cursor:pointer;background:#ffffff0f;border:0;border-radius:4px;width:24px;height:18px;padding:0;font-size:11px;line-height:1}.tree-move-btn:hover:not(:disabled){color:#fff;background:#008b8b47}.tree-move-btn:disabled{opacity:.25;cursor:not-allowed}.tree-delete-btn{color:#ffffff73;cursor:pointer;background:0 0;border:0;border-radius:8px;flex:0 0 32px;width:32px;font-size:18px;line-height:1}.tree-delete-btn:hover:not(:disabled){color:#fecaca;background:#ef444438}.tree-delete-btn:disabled{opacity:.35;cursor:not-allowed}.tree-groups{gap:4px;margin:4px 0 0;padding:0 0 0 10px;list-style:none;display:grid}.btn{border:1px solid var(--line);border-radius:var(--radius-sm);min-height:40px;color:var(--text);background:#fff;justify-content:center;align-items:center;padding:0 14px;font-weight:600;transition:background .15s,border-color .15s,color .15s;display:inline-flex}.btn-primary{background:var(--teal);border-color:var(--teal);color:#fff}.btn-primary:hover:not(:disabled){background:var(--teal-dark);border-color:var(--teal-dark)}.btn-ghost{color:#ffffffe0;background:0 0;border-color:#ffffff2e}.sidebar .btn-ghost{background:#ffffff0a;border-color:#ffffff24}.sidebar .btn-ghost:hover:not(:disabled){color:#fff;background:#ffffff1a;border-color:#ffffff38}.btn-block{width:100%}.btn-sm{min-height:32px;padding:0 10px;font-size:13px}.alert{border-radius:var(--radius-sm);border:1px solid var(--line);margin-bottom:16px;padding:12px 16px}.alert-error{color:#9f1239;background:#fff1f2;border-color:#fecdd3}.empty-state{text-align:center;padding:28px}.group-editor,.panel{margin-bottom:16px;padding:22px 24px}.field-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:14px;display:grid}.field-span-2{grid-column:1/-1}.toolbar-actions{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.save-hint{color:var(--green);font-size:13px;font-weight:600}.panel .btn-ghost{border-color:var(--line);color:var(--muted);background:#fff}.panel .btn-sm{min-height:36px}.field-grid label{color:var(--muted);gap:6px;font-size:13px;font-weight:600;display:grid}.field-grid input,.field-grid textarea,.field-grid select{border:1px solid var(--line);border-radius:var(--radius-sm);width:100%;min-height:40px;color:var(--text);background:#fff;padding:9px 11px;transition:border-color .15s,box-shadow .15s}.field-grid input:focus,.field-grid textarea:focus,.field-grid select:focus{border-color:var(--teal);outline:none;box-shadow:0 0 0 3px #007d7d1f}.arabic-input{text-align:right;direction:rtl;font-size:22px}.tabs{gap:8px;margin:4px 0 16px;display:flex}.tab{border:1px solid var(--line);min-height:38px;color:var(--muted);background:#fff;border-radius:999px;padding:0 16px;font-size:13px;font-weight:600;transition:background .15s,border-color .15s,color .15s}.tab:hover{color:var(--teal-dark);border-color:#b7e0e0}.tab.active,.tab.is-active{background:var(--teal-soft);color:var(--teal-dark);border-color:#b7e7e7}.panel-toolbar{justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;display:flex}.block-list{gap:12px;display:grid}.block-card{border:1px solid var(--line);background:var(--surface-soft);border-radius:8px;padding:12px}.block-card-head{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}.chip-row{flex-wrap:wrap;gap:8px;margin-top:14px;display:flex}.chip{border:1px dashed var(--line);min-height:34px;color:var(--muted);background:#fff;border-radius:999px;padding:0 12px;font-size:13px;font-weight:600}.sidebar-footer{border-top:1px solid var(--sidebar-border);background:#00000026;flex-shrink:0;margin-top:0;padding:14px 16px 18px}.sidebar-form{background:#ffffff0f;border-radius:8px;gap:8px;padding:10px;display:grid}.sidebar-form input,.sidebar-form select,.tree-group-form input{color:#fff;background:#0003;border:1px solid #ffffff24;border-radius:8px;width:100%;min-height:36px;padding:8px 10px}.sidebar-form-actions{gap:8px;display:flex}.tree-add-btn,.tree-add-group{color:#ffffffc7;text-align:left;background:0 0;border:1px dashed #ffffff38;border-radius:8px;width:100%;min-height:34px;margin-top:8px;padding:0 10px;font-size:13px;font-weight:600}.tree-group-form{margin:8px 0 0 10px}.section-editor{margin-bottom:12px}.page-meta-grid{margin-bottom:16px}.block-card-actions{align-items:center;gap:4px;display:flex}.upload-field-stack{gap:8px;display:grid}.upload-row{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.upload-row input{flex:1;min-width:180px}.upload-btn{cursor:pointer;position:relative}.file-upload-label{color:var(--muted);gap:6px;font-size:13px;font-weight:600;display:grid}.auth-gate{background:var(--surface-soft);place-items:center;min-height:100vh;padding:24px;display:grid}.auth-gate-card{border:1px solid var(--line);background:#fff;border-radius:12px;gap:12px;width:min(420px,100%);padding:24px;display:grid;box-shadow:0 8px 24px #0000000f}.auth-gate-card h1{margin:0;font-size:22px}.auth-gate-card input{border:1px solid var(--line);border-radius:8px;min-height:42px;padding:0 12px}.inline-form{flex-wrap:wrap;justify-content:center;gap:10px;display:flex}.inline-form input{border:1px solid var(--line);border-radius:8px;min-width:220px;min-height:40px;padding:8px 10px}.admin-app{background:var(--bg);flex-direction:column;height:100vh;display:flex;overflow:hidden}.admin-top-nav{border-bottom:1px solid var(--sidebar-border);background:#080d12;flex-shrink:0;justify-content:space-between;align-items:center;gap:20px;min-height:56px;padding:0 24px;display:flex}.admin-top-nav-brand{align-items:center;gap:10px;min-width:0;display:flex}.admin-top-nav-mark{color:#fff;letter-spacing:.04em;background:linear-gradient(145deg,#009898,#006b6b);border-radius:8px;place-items:center;width:32px;height:32px;font-size:11px;font-weight:800;display:grid}.admin-top-nav-title{color:#ffffffeb;letter-spacing:-.01em;font-size:14px;font-weight:600}.admin-top-nav-tabs{background:#ffffff0d;border-radius:10px;gap:6px;padding:4px;display:flex}.admin-top-nav-btn{color:#ffffff9e;background:0 0;border:0;border-radius:8px;min-height:36px;padding:0 16px;font-size:13px;font-weight:600;transition:background .15s,color .15s}.admin-top-nav-btn:hover{color:#ffffffe6;background:#ffffff0f}.admin-top-nav-btn.is-active{color:#fff;background:#007d7d52;box-shadow:inset 0 0 0 1px #00c8c833}.tree-section-row,.tree-item-row{align-items:stretch;gap:4px;display:flex}.tree-children{gap:4px;margin:4px 0 8px;padding-left:10px;display:grid}.tree-item{color:#ffffffad;text-align:left;background:0 0;border:0;border-radius:8px;flex:1;min-width:0;padding:8px 10px;font-size:13px}.tree-item.active,.tree-section-btn.active,.tree-section-btn.is-active,.tree-group.active{color:#fff;background:#007d7d47;box-shadow:inset 0 0 0 1px #00c8c81f}.tree-inline-form{margin-top:4px}.checkbox-row{align-items:center;gap:8px;display:flex}.storage-audio-field{gap:6px;display:grid}.storage-audio-field-label{color:var(--text);font-size:13px;font-weight:600}.storage-audio-picker-actions{flex-wrap:wrap;gap:8px;margin-top:6px;display:flex}.storage-upload-btn{cursor:pointer}.storage-picker-overlay{z-index:2000;background:#00000073;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.storage-picker-dialog{width:min(720px,100%);max-height:min(82vh,760px);box-shadow:var(--shadow);background:#fff;border-radius:12px;flex-direction:column;display:flex;overflow:hidden}.storage-picker-header{border-bottom:1px solid var(--line);flex-shrink:0;justify-content:space-between;align-items:flex-start;gap:12px;padding:16px 18px 10px;display:flex}.storage-picker-dialog .btn-ghost{border-color:var(--line);color:var(--text);background:#fff}.storage-picker-dialog .btn-ghost:hover{background:var(--surface-soft);color:var(--teal-dark)}.storage-picker-close-btn{border:1px solid var(--line);min-width:72px;min-height:36px;color:var(--text);cursor:pointer;background:#fff;border-radius:8px;flex:none;font-size:13px;font-weight:600}.storage-picker-close-btn:hover{background:var(--surface-soft);color:var(--teal-dark);border-color:#b7e7e7}.storage-picker-header h3{margin:0;font-size:18px}.storage-picker-header p{color:var(--muted);margin:4px 0 0;font-size:13px}.storage-picker-tabs{border-bottom:1px solid var(--line);flex-shrink:0;gap:8px;padding:10px 18px;display:flex}.storage-picker-footer{border-top:1px solid var(--line);flex-shrink:0;justify-content:flex-end;padding:12px 18px 16px;display:flex}.storage-picker-body{padding:12px 18px 18px;overflow:auto}.storage-picker-error{color:var(--red);margin:0;padding:10px 18px;font-size:13px}.storage-picker-loading{color:var(--muted);margin:0;padding:16px 18px;font-size:13px}.storage-breadcrumbs{flex-wrap:wrap;align-items:center;gap:2px;margin-bottom:12px;display:flex}.storage-crumb{color:var(--teal-dark);background:0 0;border:0;border-radius:4px;padding:2px 4px;font-size:13px;font-weight:600}.storage-crumb:hover{background:var(--teal-soft)}.storage-crumb-sep{color:var(--muted)}.storage-picker-section{margin-bottom:14px}.storage-picker-section-title{color:var(--muted);letter-spacing:.04em;text-transform:uppercase;margin:0 0 6px;font-size:12px;font-weight:700}.storage-picker-list{gap:6px;margin:0;padding:0;list-style:none;display:grid}.storage-picker-nested{border-left:2px solid var(--line);margin:6px 0 10px;padding-left:12px}.storage-picker-row{border:1px solid var(--line);text-align:left;background:#fff;border-radius:8px;justify-content:space-between;align-items:center;gap:12px;width:100%;min-height:40px;padding:8px 10px;display:flex}.storage-picker-row:hover{background:var(--teal-soft);border-color:#b7e7e7}.storage-picker-folder{font-weight:600}.storage-picker-meta{color:var(--muted);flex:none;font-size:12px}.storage-picker-path{text-overflow:ellipsis;white-space:nowrap;max-width:280px;overflow:hidden}.storage-picker-empty{color:var(--muted);margin:0;font-size:13px}.storage-legacy-folder+.storage-legacy-folder{margin-top:8px}.field-grid .span-2,.form-grid .span-2{grid-column:span 2}.panel-subtitle{color:var(--muted);margin:0 0 12px;font-size:14px}