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.05)}*{box-sizing:border-box}body{margin:0;font-family:Geist,system-ui,-apple-system,sans-serif;background:var(--zinc-50);color:var(--zinc-900);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}h1,h2,h3,h4,h5,h6{margin:0;font-weight:600;letter-spacing:-.02em;color:var(--zinc-950)}p{margin:0;line-height:1.5}button{font-family:inherit;transition:all .15s ease}button:active:not(:disabled){transform:scale(.98)}input,textarea,select{font-family:inherit;transition:border-color .15s ease,box-shadow .15s ease}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--dash-blue);box-shadow:0 0 0 3px var(--dash-blue-soft)}.auth-page{max-width:400px;margin:10vh auto;padding:40px 32px;border:1px solid var(--zinc-200);border-radius:var(--radius-xl);background:#fff;box-shadow:var(--shadow-sm)}.auth-page 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ease}.library-card:hover .library-card-menu .lesson-menu-btn,.library-card-menu:focus-within .lesson-menu-btn,.library-card-menu .lesson-menu-btn[aria-expanded=true]{opacity:1}.library-card:has(.lesson-menu-btn[aria-expanded=true]),.lesson-card:has(.lesson-menu-btn[aria-expanded=true]){position:relative;z-index:30}.library-card-title{display:flex;align-items:center;gap:8px;margin-top:16px}.library-card-title .project-card-name{flex:1;min-width:0;margin-top:0}.library-star{display:inline-flex;flex:none;padding:2px;border:none;background:none;color:#f59e0b;cursor:pointer}.library-star-static{cursor:default}.library-lesson-thumb{flex-direction:column;gap:10px;color:var(--zinc-400)}.library-status{padding:2px 10px;border:1px solid var(--zinc-200);border-radius:999px;background:#fff;color:var(--zinc-600);font-size:11px;font-weight:600}.library-status-completed,.library-status-ready{color:#15803d;border-color:#bbf7d0;background:#f0fdf4}.library-status-awaiting_review{color:#a16207;border-color:#fde68a;background:#fffbeb}.library-status-failed{color:#b91c1c;border-color:#fecaca;background:#fef2f2}.library-status-queued,.library-status-processing{color:var(--dash-blue-strong);border-color:#c9d6fa;background:var(--dash-blue-soft)}.library-new-row{max-width:220px;margin-bottom:16px}.library-empty{margin:24px 0;color:var(--zinc-500);font-size:14px;line-height:1.5;max-width:60ch}.library-table-wrap{border:1px solid var(--zinc-200);border-radius:var(--radius-lg);background:#fff;box-shadow:var(--shadow-sm)}.library-table{width:100%;border-collapse:collapse;font-size:14px}.library-table th{padding:10px 16px;border-bottom:1px solid var(--zinc-200);color:var(--zinc-500);font-size:12px;font-weight:500;text-align:left}.library-table td{padding:10px 16px;border-bottom:1px solid var(--zinc-100);color:var(--zinc-600);vertical-align:middle}.library-table tbody tr:last-child td{border-bottom:none}.library-table tbody tr:hover{background:var(--zinc-50)}.library-row-cell{display:flex;align-items:center;gap:8px}.library-table td+td{white-space:nowrap}.library-row-name{display:inline-flex;align-items:center;gap:10px;min-width:0;color:var(--zinc-900);font-weight:600;text-decoration:none}.library-row-name:hover{color:var(--dash-blue)}.library-row-icon{display:grid;place-items:center;flex:none;width:28px;height:28px;border-radius:var(--radius-md);background:var(--dash-blue-soft);color:var(--dash-blue);font-size:13px;font-weight:700}.library-row-menu{width:48px;text-align:right}.library-row-menu .lesson-menu-wrapper{display:inline-block}.lesson-menu-popover.item-menu{min-width:270px;padding:0;text-align:left}.item-menu-header{display:flex;flex-direction:column;gap:2px;padding:14px 16px 12px;border-bottom:1px solid var(--zinc-200)}.item-menu-header strong{max-width:250px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--zinc-900);font-size:15px;font-weight:600}.item-menu-header span{color:var(--zinc-500);font-size:12px}.item-menu-list{display:flex;flex-direction:column;padding:6px}.lesson-menu-popover .item-menu-item{display:flex;align-items:center;gap:10px;padding:9px 10px;font-size:14px}.lesson-menu-popover .item-menu-item:disabled{opacity:.55;cursor:default}.lesson-menu-popover .item-menu-item-danger,.lesson-menu-popover .item-menu-item-danger:hover{color:#dc2626}.lesson-menu-popover .item-menu-item-danger:hover{background:#fef2f2}.item-menu-divider{height:1px;margin:6px 4px;background:var(--zinc-200)}.item-menu-section,.item-menu-empty{padding:6px 10px;color:var(--zinc-500);font-size:12px}.lesson-menu-popover .item-menu-back{margin-top:4px;color:var(--zinc-500);font-size:13px}.item-menu .lesson-menu-rename,.item-menu .lesson-menu-confirm{padding:12px}.item-menu .lesson-menu-error{margin:0;padding:0 14px 12px}.lesson-row-status{display:inline-flex;align-items:center;gap:8px}.lesson-row-actions{display:flex;align-items:center;flex-wrap:wrap;gap:10px}.lesson-row-actions button,.lesson-row-upload{padding:6px 12px;border:1px solid var(--zinc-200);border-radius:var(--radius-md);background:#fff;color:var(--zinc-700);font:inherit;font-size:13px;cursor:pointer}.lesson-row-actions button:hover:not(:disabled),.lesson-row-upload:hover{border-color:var(--dash-blue);color:var(--dash-blue-strong)}.lesson-row-actions button:disabled{opacity:.5;cursor:default}.lesson-row-files{color:var(--zinc-500);font-size:13px}.lesson-row-failed{margin:0}.user-avatar{display:inline-flex;flex:none;align-items:center;justify-content:center;overflow:hidden;border-radius:50%;background:var(--dash-blue);color:#fff;font-weight:600;line-height:1;-webkit-user-select:none;user-select:none}.user-avatar img{width:100%;height:100%;object-fit:cover}.user-avatar-sm{width:26px;height:26px;font-size:12px;box-shadow:0 0 0 2px #fff,0 0 0 3px var(--zinc-200)}.user-avatar-md{width:34px;height:34px;font-size:14px}.user-avatar-lg{width:128px;height:128px;font-size:48px}.library-card-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:10px;min-height:26px}.library-card-foot .project-card-meta{min-width:0;margin-top:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.lesson-card-foot{display:flex;justify-content:flex-end}.lesson-card-linkrow{display:flex;align-items:center;justify-content:space-between;gap:12px}.creator-cell{display:inline-flex;align-items:center;gap:8px}.creator-cell .user-avatar-sm{box-shadow:none}.profile-page{max-width:880px}.profile-page h1{margin:0 0 28px;font-size:28px;letter-spacing:-.03em}.profile-section h2{margin:0 0 8px;font-size:18px;font-weight:700;color:var(--zinc-900)}.profile-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.25fr);gap:24px 56px;padding:28px 0;border-bottom:1px solid var(--zinc-200)}.profile-row:last-of-type{border-bottom:0}.profile-row-text h3{margin:0 0 4px;font-size:14.5px;font-weight:700;color:var(--zinc-900)}.profile-row-text label{display:block;cursor:pointer}.profile-row-text p{margin:0;max-width:300px;color:var(--zinc-500);font-size:13.5px;line-height:1.5}.profile-row-control{min-width:0}.profile-image-control{display:flex;flex-direction:column;align-items:flex-start;gap:12px}.profile-image-button{position:relative;display:inline-flex;flex:none;padding:0;border:0;border-radius:50%;background:transparent;cursor:pointer}.profile-image-button:hover .user-avatar{filter:brightness(1.1)}.profile-image-button:focus-visible{outline:2px solid var(--dash-blue);outline-offset:3px}.profile-image-button:disabled{opacity:.6;cursor:wait}.profile-image-edit{position:absolute;right:0;bottom:0;display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:var(--zinc-200);color:var(--zinc-800);transition:background-color .15s ease}.profile-image-button:hover .profile-image-edit{background:var(--zinc-300)}.profile-input{width:100%;min-height:44px;padding:9px 14px;border:1px solid var(--zinc-300);border-radius:var(--radius-md);background:#fff;color:var(--zinc-900);font:inherit;font-size:15px}.profile-input:focus{outline:none;border-color:var(--dash-blue);box-shadow:0 0 0 3px var(--dash-blue-soft)}.profile-input:disabled{background:var(--zinc-50);color:var(--zinc-500);cursor:not-allowed}.profile-actions{display:flex;align-items:center;gap:16px;margin-top:12px}.profile-save{padding:8px 18px;border:0;border-radius:var(--radius-md);background:var(--dash-blue);color:#fff;font:inherit;font-size:14px;font-weight:600;cursor:pointer}.profile-save:hover{background:var(--dash-blue-strong)}.profile-save:disabled{opacity:.6;cursor:wait}.profile-link-button{padding:0;border:0;background:transparent;color:var(--zinc-500);font:inherit;font-size:13px;font-weight:600;cursor:pointer}.profile-link-button:hover{color:var(--zinc-900);text-decoration:underline}.profile-link-button:disabled{opacity:.6;cursor:wait}.profile-hint{color:var(--zinc-500);font-size:13px}.profile-section .auth-error{margin-top:4px;color:#b91c1c}@media(max-width:700px){.profile-row{grid-template-columns:1fr;gap:16px;padding:22px 0}}