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var(--primary)}.playlist-item-index{color:var(--text-muted);text-align:center;width:24px;margin-right:12px;font-size:.9rem;font-weight:600}.playlist-item-details{flex:1;overflow:hidden}.playlist-item-title{white-space:nowrap;text-overflow:ellipsis;margin:0 0 4px;font-size:.95rem;font-weight:500;overflow:hidden}.playlist-item-meta{color:var(--text-muted);align-items:center;gap:8px;font-size:.8rem;display:flex}.lesson-notes-container{flex-direction:column;flex:1;display:flex;overflow:hidden}.video-player-wrapper{width:100%;padding-top:56.25%;position:relative}.video-iframe{border:none;width:100%;height:100%;position:absolute;top:0;left:0}.video-placeholder{width:100%;height:100%;color:var(--text-muted);background:#000;justify-content:center;align-items:center;display:flex}.notes-panel{flex-direction:column;height:100%;display:flex}.notes-tabs{border-bottom:1px solid var(--color-border);align-items:center;gap:4px;padding:10px 14px;display:flex}.tab-btn{border-radius:var(--radius-sm);color:var(--text-secondary);transition:all var(--transition-fast);padding:5px 12px;font-size:.8rem}.tab-btn.active{background:var(--bg-elevated);color:var(--text-primary)}.tab-btn:hover:not(.active){color:var(--text-primary)}.save-status{color:var(--text-muted);margin-left:auto;font-size:.75rem}.notes-textarea{background:var(--bg-base);width:100%;color:var(--text-primary);resize:none;border:none;outline:none;flex:1;padding:16px;font-size:.875rem;line-height:1.7}.notes-textarea::placeholder{color:var(--text-muted)}.summary-text{color:var(--text-secondary);flex:1;padding:16px;font-size:.875rem;line-height:1.7;overflow-y:auto}.summary-text ul{margin-bottom:.75rem;padding-left:1.5rem;list-style-type:disc}.summary-text ol{margin-bottom:.75rem;padding-left:1.5rem;list-style-type:decimal}.profile-main{max-width:480px;padding:60px 0}.profile-form{flex-direction:column;margin-top:24px;display:flex}@media (width<=768px){.lesson-body{flex-direction:column}.lesson-sidebar{border-left:none;border-top:1px solid var(--color-border);flex:none;height:320px}.video-node{width:280px}.hero-title{font-size:2rem}.features{grid-template-columns:1fr 1fr}}@media (width<=480px){.features{grid-template-columns:1fr}.video-node{width:240px}}.timestamp-btn{color:var(--accent);font-family:var(--font-mono);text-underline-offset:2px;cursor:pointer;border-radius:var(--radius-sm);transition:all var(--transition-fast);padding:0 4px;font-weight:500;text-decoration:underline}.timestamp-btn:hover{background:var(--accent);color:#fff;text-decoration:none}.course-card-menu-btn{border-radius:var(--radius-full);color:#fff;z-index:10;width:32px;height:32px;transition:background var(--transition-fast);background:#00000080;justify-content:center;align-items:center;font-size:1.2rem;display:flex;position:absolute;top:8px;right:8px}.course-card-menu-btn:hover{background:#000c}.course-card-dropdown{background:var(--bg-elevated);border:1px solid var(--color-border);border-radius:var(--radius-md);z-index:20;box-shadow:var(--shadow-md);flex-direction:column;min-width:120px;padding:4px;display:flex;position:absolute;top:44px;right:8px}.course-card-dropdown button{text-align:left;border-radius:var(--radius-sm);color:var(--text-primary);transition:background var(--transition-fast);padding:8px 12px;font-size:.85rem}.course-card-dropdown button:hover{background:var(--bg-muted)}.course-card-dropdown button.text-danger{color:var(--danger)}.discover-main{max-width:860px;margin:0 auto;padding:64px 24px}body:has(.discover-main){background:radial-gradient(circle at 10% 20%, #8cbcff26, transparent 30%), radial-gradient(circle at 90% 80%, #ff9fca26, transparent 30%), var(--bg-base);min-height:100vh}.discover-hero{text-align:center;margin-bottom:56px}.discover-hero .page-title{letter-spacing:-.05em;text-transform:uppercase;color:var(--bg-surface);-webkit-text-stroke:2px var(--ink);text-shadow:5px 5px 0 var(--accent-hover);margin-bottom:16px;font-size:clamp(2.8rem,6vw,4rem);font-weight:800;line-height:1.1}.discover-hero .page-subtitle{max-width:600px;color:var(--text-secondary);margin:0 auto;font-size:1.25rem;font-weight:500}.discover-form{background:var(--bg-surface);border:var(--border-neo);border-radius:var(--radius-xl);box-shadow:var(--shadow-md);transition:transform var(--transition-fast), box-shadow var(--transition-fast);flex-direction:column;gap:20px;padding:36px;display:flex}.discover-form:focus-within{box-shadow:var(--shadow-lg);transform:translate(-3px,-3px)}.discover-form h2{font-family:var(--font-sans);text-transform:uppercase;letter-spacing:.05em;font-weight:800}.discover-form-row{align-items:flex-end;gap:16px;display:flex}.field-group{flex-direction:column;gap:6px;display:flex}.topic-chips{flex-wrap:wrap;gap:8px;display:flex}.chip{border-radius:var(--radius-full);font-size:.85rem;font-family:var(--font-mono);border:2px solid var(--ink);background:var(--bg-surface);color:var(--ink);cursor:pointer;box-shadow:2px 2px 0 var(--ink);transition:all var(--transition-fast);padding:6px 16px;font-weight:500}.chip:hover,.chip-active{box-shadow:3px 3px 0 var(--ink);background:var(--accent);transform:translate(-1px,-1px)}.discover-loading{text-align:center;padding:32px}.discover-loading-steps{text-align:left;flex-direction:column;gap:12px;display:inline-flex}.loading-step{color:var(--text-secondary);font-size:.9rem;animation:1.5s ease-in-out infinite pulse}.recommendation-card{background:var(--bg-surface);border:var(--border-neo);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);margin-top:40px;padding:36px;position:relative}.recommendation-badge{color:var(--accent);border-radius:var(--radius-full);background:#73c2fb26;margin-bottom:20px;padding:4px 12px;font-size:.8rem;font-weight:600;display:inline-block}.recommendation-body{align-items:flex-start;gap:24px;margin-bottom:24px;display:flex}.recommendation-thumb{border-radius:var(--radius-md);-o-object-fit:cover;object-fit:cover;flex-shrink:0;width:200px}.recommendation-info{flex-direction:column;flex:1;gap:10px;display:flex}.recommendation-title{color:var(--text-primary);font-size:1.3rem;font-weight:700}.recommendation-channel{color:var(--accent);font-size:.9rem}.recommendation-justification{color:var(--text-secondary);font-size:.9rem;line-height:1.6}.reddit-signals{background:var(--bg-elevated);border-radius:var(--radius-md);padding:12px 16px;font-size:.85rem}.reddit-signals-label{color:var(--text-primary);margin-bottom:6px;font-weight:600;display:block}.reddit-signals ul{color:var(--text-secondary);flex-direction:column;gap:4px;padding-left:18px;list-style:outside;display:flex}.recommendation-actions{flex-wrap:wrap;gap:12px;display:flex}.cache-badge{color:var(--text-muted);font-size:.75rem;display:block}.alternatives{border-top:1px solid var(--color-border);margin-top:4px;padding-top:20px}.alternatives-title{color:var(--text-secondary);margin-bottom:14px;font-size:.9rem;font-weight:600}.alternatives-grid{grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px;display:grid}.alternative-card{background:var(--bg-elevated);border:1px solid var(--color-border);border-radius:var(--radius-md);transition:all var(--transition-fast);overflow:hidden}.alternative-card:hover{border-color:var(--accent);transform:translateY(-2px)}.alternative-card img{aspect-ratio:16/9;-o-object-fit:cover;object-fit:cover;width:100%}.alternative-info{padding:8px 10px}.alternative-title{color:var(--text-primary);-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:.78rem;font-weight:600;line-height:1.3;display:-webkit-box;overflow:hidden}.alternative-channel{color:var(--text-muted);margin-top:2px;font-size:.72rem}.recommendation-badge-fallback{color:#f5c842;background:#ffc8501f}.no-gemini-notice{color:var(--text-muted);background:var(--bg-elevated);border-radius:var(--radius-sm);border-left:3px solid var(--accent);padding:8px 12px;font-size:.82rem}.no-gemini-notice code{color:var(--accent);font-size:.82rem}.neo-audit-card{background:var(--bg-surface);border:var(--border-neo);border-radius:var(--radius-xl);box-shadow:var(--shadow-sm);margin-top:16px;padding:clamp(16px,3vw,24px)}.neo-audit-head,.neo-audit-result{justify-content:space-between;align-items:center;gap:22px;display:flex}.neo-audit-head h2{letter-spacing:-.055em;margin:0;font-size:clamp(1.4rem,3vw,2.4rem);line-height:1}.neo-eyebrow{font-family:var(--font-mono);letter-spacing:.08em;text-transform:uppercase;margin:0 0 10px;font-size:.76rem;font-weight:700}.neo-grade{aspect-ratio:1;border:var(--border-neo);background:var(--accent);width:70px;box-shadow:var(--shadow-sm);color:var(--ink);border-radius:50%;flex:none;place-items:center;font-size:2rem;display:grid}.neo-meter{border:var(--border-neo);background:repeating-linear-gradient(-45deg, var(--bg-muted) 0 12px, var(--bg-surface) 12px 24px);border-radius:999px;height:24px;margin-top:16px;overflow:hidden}.neo-meter span{border-right:var(--border-neo);background:var(--success);width:0;height:100%;transition:width .3s ease-out;display:block}.neo-audit-result{margin-top:12px}.neo-audit-result p{max-width:820px;margin:0;font-weight:500;line-height:1.55}.neo-audit-result span{font-family:var(--font-mono);flex:none;font-size:1.2rem;font-weight:700}.date-picker{flex-direction:column;display:flex}.date-picker-group{border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--bg-surface);align-items:center;transition:border-color .2s;display:flex;overflow:hidden}.date-picker-group[data-focus-within]{border-color:var(--primary)}.date-input{flex:1;padding:8px 12px;display:flex}.date-segment{font-variant-numeric:tabular-nums;border-radius:var(--radius-sm);outline:none;padding:0 2px}.date-segment[data-placeholder]{color:var(--text-muted)}.date-segment[data-focused]{background:var(--primary);color:var(--primary-foreground)}.date-picker-button{background:var(--bg-surface);border:none;border-left:1px solid var(--color-border);cursor:pointer;color:var(--text-secondary);flex-shrink:0;justify-content:center;align-items:center;padding:8px 12px;transition:background .2s;display:flex}.date-picker-button:hover{background:var(--bg-elevated)}.date-picker-popover{background:var(--bg-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);z-index:100;margin-top:4px;padding:16px}.calendar-header{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.calendar-heading{margin:0;font-size:14px;font-weight:600}.calendar-nav-btn{cursor:pointer;color:var(--text-secondary);border-radius:var(--radius-sm);background:0 0;border:none;padding:4px 8px}.calendar-nav-btn:hover{background:var(--bg-elevated)}.calendar-grid{border-collapse:collapse}.calendar-header-cell{color:var(--text-muted);padding-bottom:8px;font-size:12px;font-weight:500}.calendar-cell{cursor:pointer;border-radius:50%;outline:none;justify-content:center;align-items:center;width:32px;height:32px;margin:2px;font-size:14px;display:flex}.calendar-cell[data-focus-visible]{outline:2px solid var(--primary);outline-offset:2px}.calendar-cell[data-outside-month]{color:var(--text-muted)}.calendar-cell:hover{background:var(--bg-elevated)}.calendar-cell[data-selected]{background:var(--primary);color:var(--primary-foreground)}.calendar-cell[data-invalid]{background:var(--danger);color:#fff}.rich-text-container{background:var(--bg-surface);border-radius:var(--radius-md);flex-direction:column;width:100%;height:100%;display:flex;overflow:hidden}.rich-text-toolbar{background:var(--bg-base);border-bottom:1px solid var(--color-border);z-index:10;flex-wrap:wrap;align-items:center;gap:.5rem;padding:.75rem 1rem;display:flex;position:sticky;top:0}.toolbar-group{align-items:center;gap:.25rem;display:flex}.toolbar-divider{background-color:var(--color-border);width:1px;height:20px;margin:0 .25rem}.toolbar-btn{color:var(--text-secondary);border-radius:var(--radius-sm);cursor:pointer;background:0 0;border:1px solid #0000;justify-content:center;align-items:center;min-width:32px;height:32px;padding:.25rem .5rem;font-size:.875rem;font-weight:500;transition:all .2s;display:flex}.toolbar-btn:hover:not(:disabled){background:var(--bg-elevated);color:var(--text-primary)}.toolbar-btn.is-active{color:var(--accent);background:#73c2fb1a;border-color:#73c2fb4d}.toolbar-btn:disabled{opacity:.5;cursor:not-allowed}.rich-text-editor-wrapper{flex:1;padding:1rem;overflow-y:auto}.rich-text-content.ProseMirror{min-height:200px;font-family:inherit;font-size:inherit;outline:none;line-height:1.6}.rich-text-content.ProseMirror p.is-editor-empty:first-child:before{content:attr(data-placeholder);float:left;color:var(--text-muted);pointer-events:none;height:0}.rich-text-content.ProseMirror p{margin-bottom:.75rem}.rich-text-content.ProseMirror ul{margin-bottom:.75rem;padding-left:1.5rem;list-style-type:disc}.rich-text-content.ProseMirror ol{margin-bottom:.75rem;padding-left:1.5rem;list-style-type:decimal}.rich-text-content.ProseMirror blockquote{border-left:3px solid var(--accent);color:var(--text-muted);margin:1.5rem 0;padding-left:1rem;font-style:italic}.rich-text-content.ProseMirror code{background-color:var(--bg-elevated);border-radius:var(--radius-sm);font-family:var(--font-mono);padding:.1rem .3rem;font-size:.9em}.rich-text-content.ProseMirror mark{color:inherit;background-color:#ffcc004d;border-radius:2px;padding:0 2px}