.app-layout{display:flex;min-height:100vh;background:var(--bg-primary)}.main-content{flex:1;margin-left:var(--sidebar-width);padding:32px 40px;min-height:100vh;transition:margin-left var(--transition-slow);animation:fadeIn .3s ease}.main-content.sidebar-collapsed{margin-left:var(--sidebar-collapsed-width)}.sidebar{position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-width);background:var(--bg-secondary);border-right:1px solid var(--border-light);display:flex;flex-direction:column;z-index:100;transition:width var(--transition-slow)}.sidebar.collapsed{width:var(--sidebar-collapsed-width)}.sidebar-logo{padding:12px 12px 0;margin-bottom:20px;display:flex;align-items:center;gap:12px}.sidebar-logo .logo-icon{width:36px;height:36px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.sidebar-logo .logo-icon img{width:36px;height:36px;-o-object-fit:contain;object-fit:contain}.sidebar-logo .logo-text{display:flex;align-items:center}.sidebar-logo .logo-title{font-size:20px;font-weight:600;letter-spacing:-.03em;background:linear-gradient(135deg,var(--text-primary) 0,var(--text-secondary) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.sidebar.collapsed .logo-text{display:none}.sidebar-upload{padding:0 16px;margin-bottom:24px}.upload-btn{width:100%;padding:10px 20px;background:var(--accent-blue);color:white;border:none;border-radius:var(--radius-md);font-size:14px;font-weight:500;letter-spacing:-.01em;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:8px;transition:all var(--transition-fast);box-shadow:none}.upload-btn:hover{background:var(--accent-blue-hover)}.upload-btn:active{transform:translateY(0)}.upload-btn svg{width:18px;height:18px}.sidebar.collapsed .upload-btn span{display:none}.sidebar.collapsed .upload-btn{padding:12px}.sidebar-nav{flex:1;overflow-y:auto;padding:0 12px}.nav-section{margin-bottom:24px}.nav-section-title{font-size:11px;font-weight:500;text-transform:uppercase;letter-spacing:.06em;color:var(--text-tertiary);padding:0 12px;margin-bottom:6px}.sidebar.collapsed .nav-section-title{display:none}.nav-item{display:flex;align-items:center;gap:12px;padding:10px 12px;margin-bottom:2px;border-radius:12px;color:var(--text-secondary);font-size:14px;font-weight:400;letter-spacing:-.01em;cursor:pointer;transition:all var(--transition-fast);position:relative;text-decoration:none;overflow:hidden;border:none;background:transparent;width:100%;text-align:left}.nav-item:before{content:"";position:absolute;inset:0;background:transparent;opacity:0;transition:opacity var(--transition-fast)}.nav-item.active,.nav-item:hover{background:var(--bg-tertiary);color:var(--text-primary)}.nav-item.active{font-weight:500}.nav-item.active:before{opacity:.08}.nav-item svg{width:18px;height:18px;flex-shrink:0;stroke-width:1.5}.nav-item .badge,.nav-item span,.nav-item svg{position:relative;z-index:1}.nav-item .badge{margin-left:auto;background:transparent;color:var(--text-tertiary);font-size:12px;font-weight:400;padding:0;border-radius:0}.sidebar.collapsed .nav-item span:not(.badge){display:none}.sidebar.collapsed .nav-item .badge{position:absolute;top:4px;right:4px;padding:2px 6px;font-size:10px}.nav-label-row{display:flex;align-items:center;justify-content:space-between;padding:0 12px;margin-bottom:8px}.add-folder-btn-icon{width:24px;height:24px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);border:none;background:transparent;color:var(--text-tertiary);cursor:pointer;transition:all var(--transition-fast)}.add-folder-btn-icon:hover{background:var(--bg-tertiary);color:var(--accent-blue)}.folder-nav-item{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);color:var(--text-secondary);border:none;background:transparent;width:100%}.folder-nav-item:hover{background:var(--bg-tertiary);color:var(--text-primary)}.folder-nav-item-left{display:flex;align-items:center;gap:12px}.folder-nav-item-left svg{width:18px;height:18px;color:var(--text-tertiary)}.folder-nav-item:hover .folder-nav-item-left svg{color:var(--text-secondary)}.folder-nav-item-name{font-size:14px;font-weight:500;letter-spacing:-.01em}.folder-nav-item-count{font-size:12px;font-weight:600;color:var(--text-tertiary)}.folder-item{display:flex;align-items:center;gap:12px;padding:8px 12px;border-radius:var(--radius-sm);color:var(--text-tertiary);font-size:13px;cursor:pointer;transition:all var(--transition-fast)}.folder-item:hover{background:var(--bg-tertiary);color:var(--text-primary)}.add-folder-btn{display:flex;align-items:center;gap:8px;padding:8px 12px;color:var(--text-secondary);font-size:13px;cursor:pointer;transition:all var(--transition-fast);border:none;background:none;width:100%}.add-folder-btn:hover{color:var(--accent-blue)}.sidebar-footer-actions{padding:4px 12px;border-top:1px solid var(--border-color);display:flex;flex-direction:column;gap:2px}.sidebar-action-btn{display:flex;align-items:center;gap:12px;padding:8px 12px;background:transparent;border:none;border-radius:12px;color:var(--text-secondary);font-size:14px;font-weight:400;cursor:pointer;transition:all var(--transition-fast);width:100%}.sidebar-action-btn:hover{background:var(--bg-tertiary);color:var(--text-primary)}.sidebar-action-btn svg{flex-shrink:0;opacity:.7}.sidebar-action-btn:hover svg{opacity:1}.sidebar-action-upgrade{color:var(--accent-blue);font-weight:500}.sidebar-action-upgrade:hover{background:rgba(0,113,227,.06)}.sidebar-action-upgrade svg{opacity:1}.sidebar-action-signout{color:var(--text-secondary)}.sidebar-action-signout:hover{background:rgba(255,59,48,.06);color:#ff3b30}.sidebar-action-signout:hover svg{opacity:1}.sidebar-user{margin-top:auto;padding:20px 16px;border-top:1px solid var(--border-light);display:flex;align-items:center;gap:12px;cursor:pointer;border-radius:var(--radius-lg);transition:background var(--transition-fast)}.sidebar-user:hover,.user-avatar{background:var(--bg-tertiary)}.user-avatar{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;overflow:hidden;color:var(--text-primary);font-weight:500;font-size:14px}.user-avatar img{width:100%;height:100%;-o-object-fit:cover;object-fit:cover}.user-avatar svg{width:18px;height:18px;color:var(--text-secondary)}.user-info{flex:1;min-width:0}.user-name{font-size:14px;font-weight:500;letter-spacing:-.01em;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-plan{font-size:12px}.settings-btn,.user-plan{color:var(--text-tertiary)}.settings-btn{width:18px;height:18px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:opacity var(--transition-fast);border:none;background:none;opacity:0}.sidebar-user:hover .settings-btn{opacity:1}.settings-btn svg{width:18px;height:18px}.sidebar.collapsed .settings-btn,.sidebar.collapsed .user-info{display:none}.dashboard-hero{display:flex;align-items:stretch;gap:24px;margin-bottom:16px}.dashboard-hero-left{display:flex;flex-direction:column;gap:10px;justify-content:center;width:50%}.dashboard-stats-slider{overflow:hidden;position:relative}.dashboard-stats-track{display:flex;transition:transform .5s cubic-bezier(.4,0,.2,1)}.dashboard-stats-track>.dashboard-hero-stats{min-width:100%;flex-shrink:0}.dashboard-stats-dots{display:flex;justify-content:center;gap:6px;margin-top:10px}.dashboard-stats-dot{width:6px;height:6px;border-radius:50%;border:none;padding:0;background:rgba(0,0,0,.15);cursor:pointer;transition:all .3s ease}.dashboard-stats-dot.active{background:var(--text-primary);width:16px;border-radius:3px}.dashboard-hero-stats{display:flex;gap:12px}.dashboard-hero-stats .stat-card{margin:0;padding:12px 16px;flex:1;min-width:0}.dashboard-hero-right{width:50%;display:flex;justify-content:center;overflow:visible;margin-top:-40px}@media (max-width:1536px){.dashboard-hero-right .event-badge-container{transform:scale(.8);transform-origin:top center;height:440px!important}}@media (max-width:1366px){.dashboard-hero-right .event-badge-container{transform:scale(.68);transform-origin:top center;height:374px!important}.dashboard-hero-right{margin-top:-50px}.dashboard-hero{margin-bottom:8px}.dashboard-title-section h1{font-size:34px}.stat-card .stat-value{font-size:36px}.dashboard-hero-stats .stat-card{padding:10px 12px}.note-card{padding:18px}.section-header{margin-bottom:14px}}@media (max-width:1024px){.dashboard-hero{flex-direction:column;margin-bottom:8px}.dashboard-hero-left{width:100%}.dashboard-hero-right{width:300px;align-self:center;margin-top:-10px}.dashboard-hero-right .event-badge-container{transform:scale(.58);transform-origin:top center;height:320px!important}.dashboard-title-section h1{font-size:30px;margin-top:-8px}.stat-card .stat-value{font-size:32px}}@media (max-width:767px){.dashboard-hero-right{width:240px;margin-top:-10px}.dashboard-hero-right .event-badge-container{transform:scale(.55);transform-origin:top center;height:300px}.dashboard-hero-stats{flex-direction:column}.dashboard-title-section h1{font-size:26px;margin-top:-4px}.dashboard-title-section p{font-size:13px}.stat-card .stat-value{font-size:28px}.stat-card .stat-label,.stat-period,.stat-trend{font-size:11px}.dashboard-hero-stats .stat-card{padding:8px 12px;border-radius:12px}}@media (max-width:480px){.dashboard-hero-right{display:none}.dashboard-hero-left{gap:6px}.dashboard-title-section h1{font-size:22px;margin-top:0}.dashboard-title-section p{font-size:12px;margin-bottom:8px}.stat-card .stat-value{font-size:24px}.dashboard-hero-stats .stat-card{padding:8px 10px;border-radius:10px}.dashboard-stats-dots{margin-top:6px}}.dashboard-top-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:48px}.dashboard-title-section h1{font-size:40px;font-weight:500;letter-spacing:-.04em;color:var(--text-primary);margin-bottom:2px;margin-top:-16px}.dashboard-title-section p{font-size:15px;letter-spacing:-.01em;color:var(--text-secondary);margin-bottom:12px}.dashboard-header-actions{display:flex;align-items:center;gap:12px}.dashboard-search{display:flex;align-items:center;gap:10px;padding:10px 16px;background:var(--bg-tertiary);border:1px solid transparent;border-radius:9999px;min-width:280px;transition:all var(--transition-fast)}.dashboard-search:focus-within{background:var(--bg-secondary);border-color:rgba(0,0,0,.12);box-shadow:none}.dashboard-search svg{color:var(--text-tertiary);flex-shrink:0}.dashboard-search input{border:none;background:none;outline:none;font-size:14px;letter-spacing:-.01em;color:var(--text-primary);width:100%;font-family:inherit}.dashboard-search input::-moz-placeholder{color:var(--text-tertiary)}.dashboard-search input::placeholder{color:var(--text-tertiary)}.dashboard-header{margin-bottom:32px}.dashboard-header h1{font-size:28px;font-weight:600;color:var(--text-primary);margin-bottom:4px}.dashboard-header p{font-size:15px;color:var(--text-secondary)}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:40px}.stat-card{background:var(--bg-secondary);border-radius:16px;padding:24px;border:none;transition:all .3s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden}.stat-card:hover{box-shadow:var(--shadow-sm)}.stat-card .stat-label{font-size:13px;color:var(--text-secondary);letter-spacing:-.01em;margin-bottom:2px}.stat-period{font-size:12px;color:var(--text-tertiary);margin-bottom:8px}.stat-card .stat-value{font-size:44px;font-weight:600;letter-spacing:-.04em;line-height:1;color:var(--text-primary);margin-bottom:6px}.stat-trend{font-size:13px;color:var(--text-secondary)}.stat-trend span{color:var(--accent-blue);font-weight:500}.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.section-header h2{font-size:20px;font-weight:600;letter-spacing:-.03em;color:var(--text-primary)}.section-header .view-all{display:flex;align-items:center;gap:4px;font-size:14px;font-weight:500;color:var(--accent-blue);cursor:pointer;border:none;background:none;transition:opacity var(--transition-fast)}.section-header .view-all:hover{opacity:.8}.section-header .view-all svg{width:16px;height:16px}.notes-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:32px}.note-card{background:var(--bg-secondary);border-radius:16px;padding:24px;border:none;cursor:pointer;transition:all var(--transition-smooth);position:relative;overflow:hidden}.note-card:hover{transform:translateY(-2px);box-shadow:0 4px 16px rgba(0,0,0,.08)}.note-card .note-card-header,.note-card .note-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:16px}.note-type-badge{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:var(--radius-md);font-size:12px;font-weight:500;letter-spacing:-.01em}.note-type-badge.lecture{background:rgba(0,113,227,.1);color:var(--accent-blue)}.note-type-badge.study{background:#f5f5f7;color:var(--text-secondary)}.note-type-badge.research{background:rgba(175,82,222,.1);color:var(--accent-purple)}.note-type-badge.folder{background:#f5f5f7;color:var(--text-secondary)}.note-stat-badge{display:inline-flex;align-items:center;gap:4px;font-size:12px;font-weight:400;letter-spacing:-.01em}.note-stat-badge,.note-stat-badge.flashcard,.note-stat-badge.infographic,.note-stat-badge.quiz{color:var(--text-tertiary)}.note-dropdown-menu{position:absolute;top:100%;right:0;margin-top:4px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);box-shadow:0 10px 40px rgba(0,0,0,.15);padding:8px;min-width:200px;z-index:100}.dropdown-menu-header{padding:8px 12px;font-size:11px;font-weight:600;text-transform:uppercase;color:var(--text-tertiary);letter-spacing:.05em;border-bottom:1px solid var(--border-color);margin-bottom:4px}.dropdown-menu-item{width:100%;padding:10px 12px;display:flex;align-items:center;gap:12px;background:transparent;border:none;border-radius:var(--radius-md);color:var(--text-primary);fontSize:14px;font-weight:500;cursor:pointer;text-align:left;transition:all .2s}.dropdown-menu-item:hover{background:var(--bg-tertiary)}.folder-submenu{position:absolute;left:100%;top:0;marginLeft:4px;background:var(--bg-secondary);borderRadius:var(--radius-lg);border:1px solid var(--border-color);boxShadow:var(--shadow-lg);minWidth:180px;maxHeight:300px;overflowY:auto;zIndex:1001;padding:4px 0}.note-type-badge.audio{background:rgba(255,149,0,.1);color:var(--accent-orange)}.note-type-badge svg{width:14px;height:14px}.note-card .note-icon{width:40px;height:40px;background:var(--bg-tertiary);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center}.note-card .note-icon svg{width:20px;height:20px;color:var(--text-secondary)}.note-card .note-menu{width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);color:var(--text-secondary);cursor:pointer;border:none;background:none;opacity:0;transition:all var(--transition-fast)}.note-card:hover .note-menu{opacity:1}.note-card .note-menu:hover{background:var(--bg-tertiary)}.note-card .note-title{font-size:17px;font-weight:600;letter-spacing:-.02em;color:var(--text-primary);margin-bottom:8px}.note-card .note-preview,.note-card .note-title{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.note-card .note-preview{font-size:14px;color:var(--text-secondary);line-height:1.5;margin-bottom:16px}.note-card .note-footer,.note-card .note-meta{display:flex;align-items:center;justify-content:space-between}.note-card .note-date{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--text-tertiary)}.note-card .note-date svg{width:14px;height:14px}.note-card .note-actions{display:flex;gap:8px}.note-action-btn{width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);border:none;background:transparent;color:var(--text-tertiary);cursor:pointer;transition:all var(--transition-fast)}.note-action-btn:hover{background:var(--bg-tertiary);color:var(--accent-blue)}.note-action-btn svg{width:16px;height:16px}.note-card .note-tag{font-size:11px;padding:4px 10px;background:var(--bg-tertiary);border-radius:var(--radius-sm);font-weight:500;color:var(--text-tertiary)}.activity-section{margin-bottom:32px}.activity-group{margin-bottom:24px}.activity-group:last-child{margin-bottom:0}.activity-group-title{font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--text-tertiary);margin-bottom:12px;padding-left:4px}.activity-feed{display:flex;flex-direction:column;gap:0}.activity-group{position:relative}.activity-group-label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--text-tertiary);padding:0 0 10px 44px}.activity-group+.activity-group{margin-top:8px;padding-top:8px;border-top:1px solid var(--bg-tertiary)}.activity-feed-item{display:flex;gap:14px;padding:6px 8px 6px 0;border-radius:10px;cursor:default;transition:background .15s ease}.activity-feed-item:hover{background:var(--bg-tertiary)}.activity-feed-timeline{flex-direction:column;padding-top:2px}.activity-feed-dot,.activity-feed-timeline{display:flex;align-items:center;width:30px;flex-shrink:0}.activity-feed-dot{height:30px;border-radius:50%;justify-content:center}.activity-feed-dot svg{width:14px;height:14px}.activity-feed-dot.upload{background:#EFF6FF;color:#3B82F6}.activity-feed-dot.quiz{background:#F0FDF4;color:#22C55E}.activity-feed-dot.flashcard{background:#FAF5FF;color:#A855F7}.activity-feed-dot.study{background:#FFF7ED;color:#F97316}.activity-feed-line{width:2px;flex:1;min-height:8px;background:var(--bg-tertiary);border-radius:1px;margin-top:4px}.activity-feed-item:last-child .activity-feed-line{visibility:hidden}.activity-feed-body{flex:1;min-width:0;padding:4px 0 12px}.activity-feed-row{display:flex;align-items:baseline;justify-content:space-between;gap:12px}.activity-feed-title{font-size:13.5px;font-weight:500;letter-spacing:-.01em;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.activity-feed-time{white-space:nowrap;flex-shrink:0}.activity-feed-desc,.activity-feed-time{font-size:12px;color:var(--text-tertiary)}.activity-feed-desc{margin-top:1px;line-height:1.4}.activity-status{font-size:13px;font-weight:500;color:var(--accent-blue)}.dashboard-bottom-grid{display:grid;grid-template-columns:2fr 1fr;gap:24px;margin-top:40px}.activity-card{background:var(--bg-secondary);border-radius:16px;padding:24px;border:none}.activity-card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.activity-card-header h2{font-size:18px;font-weight:600;color:var(--text-primary)}.view-all-link{display:flex;align-items:center;gap:4px;font-size:14px;font-weight:500;color:var(--accent-blue);background:none;border:none;cursor:pointer;transition:opacity var(--transition-fast)}.view-all-link:hover{opacity:.8}.view-all-link svg{width:16px;height:16px}.quick-actions-card{background:var(--bg-secondary);border-radius:16px;padding:20px;border:none}.quick-actions-card h3{font-size:18px;font-weight:600;color:var(--text-primary);margin-bottom:16px}.quick-actions{background:var(--bg-secondary);border-radius:var(--radius-lg);padding:20px;border:1px solid var(--border-light)}.quick-actions h3{font-size:16px;font-weight:600;color:var(--text-primary);margin-bottom:16px}.quick-action-list{display:flex;flex-direction:column;gap:4px}.quick-action{display:flex;align-items:center;gap:14px;padding:16px;border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-fast);border:none;background:transparent;width:100%;text-align:left;font-family:inherit}.quick-action:hover{background:rgba(0,0,0,.04)}.quick-action:hover .action-icon{background:var(--text-primary);color:white}.quick-action .action-icon{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center}.quick-action .action-icon.blue,.quick-action .action-icon.flashcard,.quick-action .action-icon.folder,.quick-action .action-icon.green,.quick-action .action-icon.orange,.quick-action .action-icon.purple,.quick-action .action-icon.quiz,.quick-action .action-icon.upload{background:var(--bg-tertiary);color:var(--text-secondary)}.quick-action .action-icon svg{width:20px;height:20px}.quick-action .action-text{flex:1;text-align:left}.quick-action .action-label{display:block;font-size:14px;color:var(--text-primary);font-weight:500;margin-bottom:2px}.quick-action .action-desc{display:block;font-size:12px;color:var(--text-tertiary);font-weight:400}.quick-action .action-arrow{margin-left:auto;color:rgba(0,0,0,.15);flex-shrink:0;transition:color var(--transition-fast)}.quick-action:hover .action-arrow{color:var(--text-tertiary)}.quick-action .action-arrow svg{width:16px;height:16px}.note-picker-modal{background:var(--bg-secondary);border-radius:16px;padding:24px;width:440px;max-width:90vw;max-height:70vh;display:flex;flex-direction:column;box-shadow:0 20px 60px rgba(0,0,0,.15)}.note-picker-modal h3{font-size:18px;font-weight:600;color:var(--text-primary);margin-bottom:4px}.note-picker-list{overflow-y:auto;display:flex;flex-direction:column;gap:4px}.note-picker-item{display:flex;align-items:center;gap:12px;padding:12px;border-radius:10px;border:none;background:none;cursor:pointer;transition:background var(--transition-fast);text-align:left;width:100%;color:var(--text-secondary)}.note-picker-item:hover{background:var(--bg-tertiary)}.note-picker-item-text{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}.note-picker-item-title{font-size:14px;font-weight:500;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.note-picker-item-date{font-size:12px;color:var(--text-tertiary)}.library-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.library-header h1{font-size:28px;font-weight:600;color:var(--text-primary)}.library-controls{gap:12px}.library-controls,.search-box{display:flex;align-items:center}.search-box{gap:8px;padding:10px 16px;background:var(--bg-secondary);border:1px solid var(--border-light);border-radius:var(--radius-md);width:280px;transition:all var(--transition-fast)}.search-box:focus-within{border-color:var(--accent-blue);box-shadow:0 0 0 3px var(--accent-blue-light)}.search-box svg{width:18px;height:18px;color:var(--text-secondary);flex-shrink:0}.search-box input{flex:1;border:none;background:none;font-size:14px;color:var(--text-primary);outline:none}.search-box input::-moz-placeholder{color:var(--text-secondary)}.search-box input::placeholder{color:var(--text-secondary)}.filter-btn{display:flex;align-items:center;gap:6px;padding:10px 16px;background:var(--bg-secondary);border:1px solid var(--border-light);border-radius:var(--radius-md);font-size:14px;color:var(--text-tertiary);cursor:pointer;transition:all var(--transition-fast)}.filter-btn:hover{background:var(--bg-tertiary)}.filter-btn svg{width:16px;height:16px}.view-toggle{display:flex;background:var(--bg-tertiary);border-radius:var(--radius-sm);padding:4px}.view-toggle button{width:32px;height:32px;display:flex;align-items:center;justify-content:center;border:none;background:none;border-radius:var(--radius-sm);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast)}.view-toggle button.active{background:var(--bg-secondary);color:var(--text-primary);box-shadow:var(--shadow-sm)}.view-toggle button svg{width:18px;height:18px}.library-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.library-grid.list-view{grid-template-columns:1fr}.library-grid.list-view .note-card{display:flex;align-items:center;gap:16px}.library-grid.list-view .note-card .note-header{margin-bottom:0}.library-grid.list-view .note-card .note-content{flex:1;min-width:0}.library-grid.list-view .note-card .note-preview{margin-bottom:0}.page-header{margin-bottom:32px;display:flex;justify-content:space-between;align-items:flex-start;gap:24px}.page-title-section{display:flex;flex-direction:column}.page-title-section h1{font-size:32px;font-weight:700;letter-spacing:-.03em;color:var(--text-primary);margin-bottom:4px}.page-subtitle{font-size:15px;color:var(--text-secondary);font-weight:400}.quiz-viewer-container{max-width:800px;margin:0 auto;padding-bottom:40px}.quiz-viewer-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:40px}.quiz-viewer-badge{background:rgba(139,92,246,.1);color:#8B5CF6;padding:6px 12px;border-radius:20px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.05em}.quiz-viewer-card{background:var(--bg-secondary);border-radius:48px;padding:48px 56px;box-shadow:0 20px 60px rgba(0,0,0,.08);position:relative;overflow:hidden}.quiz-viewer-card:before{content:"";position:absolute;top:0;right:0;width:256px;height:256px;background:linear-gradient(135deg,rgba(139,92,246,.1),transparent 70%);border-radius:50%;transform:translate(30%,-30%)}.quiz-viewer-title{font-size:28px;font-weight:700;text-align:center;margin-bottom:8px;color:var(--text-primary);position:relative}.quiz-viewer-subtitle{font-size:15px;color:var(--text-tertiary);text-align:center}.quiz-question,.quiz-viewer-subtitle{margin-bottom:48px;position:relative}.quiz-question-title{font-size:18px;font-weight:700;color:var(--text-primary);margin-bottom:20px;line-height:1.5}.quiz-question-number{color:#8B5CF6;margin-right:8px}.quiz-option{border:2px solid var(--border-color);border-radius:16px;background:var(--bg-secondary);transition:all .2s ease;font-size:15px;font-weight:500;color:var(--text-secondary);text-align:left;justify-content:space-between}.quiz-option:hover{border-color:var(--border-color);background:var(--bg-tertiary)}.quiz-option.selected{border-color:#8B5CF6;background:rgba(139,92,246,.05);color:#8B5CF6}.quiz-option.correct{background:rgba(52,199,89,.1);color:var(--accent-green)}.quiz-option.incorrect{border-color:var(--accent-pink);background:rgba(255,45,85,.1);color:var(--accent-pink)}.quiz-option.disabled{opacity:.4;pointer-events:none}.quiz-option-check{width:20px;height:20px;display:none}.quiz-option.correct .quiz-option-check,.quiz-option.selected .quiz-option-check{display:block}.quiz-viewer-footer{display:flex;justify-content:space-between;align-items:center;margin-top:48px;padding-top:32px;border-top:1px solid var(--border-color);position:relative}.quiz-progress-indicator{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-tertiary)}.quiz-progress-dot{width:8px;height:8px;border-radius:50%;background:#8B5CF6;animation:pulse 2s infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.quiz-list{display:flex;flex-direction:column;gap:16px}.quiz-card{background:var(--bg-secondary);border-radius:var(--radius-xl);padding:24px;border:1px solid var(--border-color);display:flex;align-items:center;gap:20px;cursor:pointer;transition:all var(--transition-smooth)}.quiz-card:hover{transform:translateX(8px);box-shadow:var(--shadow-card)}.quiz-icon{width:56px;height:56px;border-radius:50%;background:var(--accent-purple-light);color:var(--accent-purple);display:flex;align-items:center;justify-content:center;flex-shrink:0}.quiz-icon svg{width:24px;height:24px}.quiz-content{flex:1;min-width:0}.quiz-title{font-size:17px;font-weight:600;letter-spacing:-.02em;color:var(--text-primary);margin-bottom:6px}.quiz-meta{display:flex;gap:16px;font-size:13px;color:var(--text-secondary)}.quiz-meta span{position:relative}.quiz-meta span:not(:last-child):after{content:"·";position:absolute;right:-10px;color:var(--text-tertiary)}.quiz-score{display:flex;flex-direction:column;align-items:flex-end;text-align:right;flex-shrink:0}.quiz-score-value{font-size:32px;font-weight:600;letter-spacing:-.03em;line-height:1;margin-bottom:4px;color:var(--accent-green)}.quiz-score-label{font-size:12px;color:var(--text-secondary);font-weight:500}.flashcard-study-container{min-height:80vh;display:flex;flex-direction:column;align-items:center;justify-content:center;max-width:800px;margin:0 auto;padding:40px 20px}.flashcard-study-header{width:100%;display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.flashcard-study-progress{text-align:right}.flashcard-study-progress .current{font-size:24px;font-weight:700;color:var(--text-primary)}.flashcard-study-progress .total{font-size:24px;font-weight:500;color:var(--text-tertiary)}.flashcard-perspective{perspective:1000px;width:100%;max-width:640px;aspect-ratio:1.6/1;cursor:pointer}.flashcard-inner{position:relative;width:100%;height:100%;transition:transform .7s cubic-bezier(.4,0,.2,1);transform-style:preserve-3d}.flashcard-inner.flipped{transform:rotateY(180deg)}.flashcard-face{position:absolute;width:100%;height:100%;backface-visibility:hidden;border-radius:40px;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:48px;text-align:center}.flashcard-front{background:var(--bg-secondary);border:1px solid var(--border-color);box-shadow:0 20px 60px -15px rgba(0,0,0,.08)}.flashcard-front:hover{box-shadow:0 30px 80px -20px rgba(0,0,0,.12)}.flashcard-back{background:linear-gradient(135deg,#1D1D1F,#2D2D2F);transform:rotateY(180deg);border:1px solid rgba(255,255,255,.1)}.flashcard-label{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;padding:6px 12px;border-radius:20px;margin-bottom:32px}.flashcard-front .flashcard-label{background:rgba(0,113,227,.1);color:var(--accent-blue)}.flashcard-back .flashcard-label{background:rgba(255,255,255,.1);color:rgba(147,197,253,1)}.flashcard-term{font-size:40px;font-weight:700;letter-spacing:-.03em;color:var(--text-primary);line-height:1.2}.flashcard-definition{font-size:24px;font-weight:500;color:white;line-height:1.5}.flashcard-hint{position:absolute;bottom:40px;font-size:13px;color:var(--text-tertiary);font-weight:500;opacity:.5}.flashcard-controls{display:flex;align-items:center;gap:16px;margin-top:48px;width:100%;max-width:640px}.flashcard-nav-btn{width:64px;height:64px;border-radius:50%;display:flex;align-items:center;justify-content:center;border:none;cursor:pointer;transition:all .2s ease}.flashcard-nav-btn:hover:not(:disabled){transform:scale(1.05)}.flashcard-nav-btn:active:not(:disabled){transform:scale(.95)}.flashcard-deck{background:var(--bg-secondary);border-radius:var(--radius-xl);padding:28px;border:1px solid var(--border-light);cursor:pointer;transition:all var(--transition-smooth);position:relative;overflow:hidden}.flashcard-deck:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--accent-orange),var(--accent-pink))}.flashcard-deck:first-child:before{background:linear-gradient(90deg,var(--accent-blue),var(--accent-purple))}.flashcard-deck:nth-child(2):before{background:linear-gradient(90deg,var(--accent-green),var(--accent-teal))}.flashcard-deck:nth-child(3):before{background:linear-gradient(90deg,var(--accent-orange),var(--accent-pink))}.flashcard-deck:hover{transform:translateY(-6px) rotateX(2deg);box-shadow:var(--shadow-lg);border-color:transparent}.flashcard-deck:hover .deck-delete-btn{opacity:1!important}.flashcard-deck .deck-preview{display:flex;gap:4px;margin-bottom:20px}.flashcard-deck .deck-preview-card{width:40px;height:56px;background:var(--bg-tertiary);border-radius:var(--radius-sm);border:1px solid var(--border-light);position:relative}.flashcard-deck .deck-preview-card:first-child{transform:rotate(-8deg);z-index:3}.flashcard-deck .deck-preview-card:nth-child(2){transform:rotate(-4deg);z-index:2;margin-left:-20px}.flashcard-deck .deck-preview-card:nth-child(3){transform:rotate(0deg);z-index:1;margin-left:-20px}.flashcard-deck .deck-title{font-size:18px;font-weight:600;letter-spacing:-.02em;color:var(--text-primary);margin-bottom:6px}.flashcard-deck .deck-count{font-size:13px;color:var(--text-secondary);margin-bottom:16px}.flashcard-deck .deck-progress{height:4px;background:var(--bg-tertiary);border-radius:2px;overflow:hidden}.flashcard-deck .deck-progress-bar{height:100%;border-radius:2px;transition:width var(--transition-smooth)}.flashcard-deck:first-child .deck-progress-bar{background:linear-gradient(90deg,var(--accent-blue),var(--accent-purple))}.flashcard-deck:nth-child(2) .deck-progress-bar{background:linear-gradient(90deg,var(--accent-green),var(--accent-teal))}.flashcard-deck:nth-child(3) .deck-progress-bar{background:linear-gradient(90deg,var(--accent-orange),var(--accent-pink))}.flashcard-deck .deck-header{display:flex;align-items:flex-start;gap:12px;margin-bottom:12px}.flashcard-deck .deck-icon{width:44px;height:44px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;flex-shrink:0;background:var(--accent-orange-light);color:var(--accent-orange)}.flashcard-deck .deck-icon svg{width:22px;height:22px}.flashcard-deck .deck-info{flex:1;min-width:0}.flashcard-deck .deck-info .deck-title{margin-bottom:4px}.flashcard-deck .deck-meta{font-size:13px;color:var(--text-secondary)}.progress-bar{height:6px;background:var(--bg-tertiary);border-radius:3px;overflow:hidden;margin-top:12px}.progress-bar .progress-fill{height:100%;border-radius:3px;transition:width var(--transition-slow)}.progress-bar .progress-fill.green{background:var(--accent-green)}.progress-bar .progress-fill.orange{background:var(--accent-orange)}.progress-bar .progress-fill.purple{background:var(--accent-purple)}.folders-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:40px}.folder-card{background:var(--bg-secondary);border-radius:var(--radius-xl);padding:24px;border:1px solid var(--border-color);cursor:pointer;transition:all var(--transition-smooth);position:relative;overflow:hidden}.folder-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-elevated)}.folder-card:before{content:"";position:absolute;top:-20px;right:-20px;width:80px;height:80px;border-radius:50%;opacity:.1;transition:opacity var(--transition-smooth)}.folder-card:hover:before{opacity:.2}.folder-card:first-child:before{background:var(--accent-blue)}.folder-card:nth-child(2):before{background:var(--accent-green)}.folder-card:nth-child(3):before{background:var(--accent-orange)}.folder-card:nth-child(4):before{background:var(--accent-purple)}.folder-icon{width:56px;height:56px;border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;margin-bottom:16px;position:relative}.folder-card:first-child .folder-icon{background:rgba(0,113,227,.1);color:var(--accent-blue)}.folder-card:nth-child(2) .folder-icon{background:rgba(52,199,89,.1);color:var(--accent-green)}.folder-card:nth-child(3) .folder-icon{background:rgba(255,149,0,.1);color:var(--accent-orange)}.folder-card:nth-child(4) .folder-icon{background:rgba(175,82,222,.1);color:var(--accent-purple)}.folder-icon svg{width:28px;height:28px}.folder-name{font-size:16px;font-weight:600;letter-spacing:-.02em;margin-bottom:4px}.folder-count{font-size:13px;color:var(--text-secondary)}.folder-name-input{width:100%;padding:12px 16px;border-radius:var(--radius-md);border:1px solid var(--border-color);background:var(--bg-tertiary);color:var(--text-primary);font-size:15px;margin-bottom:20px;outline:none;transition:all var(--transition-fast)}.folder-name-input:focus{border-color:var(--accent-blue);background:var(--bg-secondary)}.folder-color-picker{display:flex;gap:12px;margin-bottom:24px}.folder-color-option{width:40px;height:40px;border-radius:50%;cursor:pointer;transition:all var(--transition-fast);position:relative;border:3px solid transparent}.folder-color-option.selected{border-color:var(--text-primary);transform:scale(1.1)}.folder-color-option.blue{background:linear-gradient(135deg,#007AFF,#5AC8FA)}.folder-color-option.purple{background:linear-gradient(135deg,#AF52DE,#BF5AF2)}.folder-color-option.pink{background:linear-gradient(135deg,#FF2D55,#FF375F)}.folder-color-option.orange{background:linear-gradient(135deg,#FF9500,#FFCC00)}.folder-color-option.green{background:linear-gradient(135deg,#34C759,#30D158)}.folder-color-option.teal{background:linear-gradient(135deg,#5AC8FA,#64D2FF)}.folder-card .folder-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}.folder-card .folder-icon-large{width:44px;height:44px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center}.folder-card .folder-icon-large svg{width:24px;height:24px}.folder-card .folder-meta{font-size:13px;color:var(--text-secondary)}.note-detail{max-width:1000px;margin:0 auto}.note-detail-header{background:var(--bg-secondary);border-radius:var(--radius-xl);border:1px solid var(--border-light);padding:32px;margin-bottom:24px}.note-detail-nav{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px}.note-detail-nav .btn{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:var(--radius-md);font-size:14px;font-weight:500;cursor:pointer;transition:all var(--transition-fast);border:1px solid var(--border-light);background:var(--bg-secondary);color:var(--text-primary)}.note-detail-nav .btn:hover{background:var(--bg-tertiary)}.note-detail-nav .btn svg{width:16px;height:16px}.note-detail-hero{display:flex;align-items:flex-start;gap:24px}.note-detail-icon{width:96px;height:96px;border-radius:24px;background:var(--bg-tertiary);border:1px solid var(--border-color);display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--text-secondary)}.note-detail-icon svg{width:40px;height:40px}.note-detail-info{flex:1}.note-detail-info h1{font-size:32px;font-weight:700;letter-spacing:-.04em;color:var(--text-primary);margin-bottom:12px;line-height:1.2}.note-detail-meta{display:flex;align-items:center;gap:16px;flex-wrap:wrap;font-size:14px;color:var(--text-secondary);font-weight:500}.note-detail-meta span{display:flex;align-items:center;gap:6px}.note-detail-meta svg{width:16px;height:16px;color:var(--text-tertiary)}.note-detail-badge{background:rgba(52,199,89,.1);color:var(--accent-green);padding:4px 12px;border-radius:20px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;border:1px solid rgba(52,199,89,.2)}.note-detail-content{background:var(--bg-secondary);border-radius:40px;padding:48px;box-shadow:0 2px 40px rgba(0,0,0,.04);min-height:50vh}.note-hero{background:linear-gradient(135deg,var(--accent-blue),#5856d6);border-radius:var(--radius-xl);padding:32px;color:white;margin-bottom:24px}.note-hero .note-tag{display:inline-block;padding:4px 12px;background:rgba(255,255,255,.2);border-radius:20px;font-size:12px;font-weight:500;margin-bottom:12px}.note-hero h1{font-size:28px;font-weight:600;margin-bottom:8px}.note-hero .note-date{font-size:14px;opacity:.9}.action-cards-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-bottom:32px}.action-card{position:relative;border:none;border-radius:var(--radius-xl);padding:28px;cursor:pointer;transition:all var(--transition-smooth);display:flex;align-items:center;overflow:hidden;text-align:left;width:100%}.action-card.quiz{background:linear-gradient(135deg,#8B5CF6,#A855F7);box-shadow:0 8px 32px rgba(139,92,246,.3);border:none}.action-card.flashcards{background:linear-gradient(135deg,#06B6D4,#22D3EE);box-shadow:0 8px 32px rgba(6,182,212,.3);border:none}.action-card:hover{transform:scale(1.02)}.action-card:active{transform:scale(.98)}.action-card .action-card-bg-icon{position:absolute;right:-20px;bottom:-20px;width:140px;height:140px;opacity:.08;transition:transform var(--transition-smooth)}.action-card:hover .action-card-bg-icon{transform:scale(1.1) rotate(5deg)}.action-card .action-card-bg-icon svg{width:100%;height:100%}.action-card.quiz .action-card-bg-icon svg{color:var(--accent-purple)}.action-card.flashcards .action-card-bg-icon svg{color:var(--accent-teal)}.action-card .action-card-content{display:flex;align-items:flex-start;gap:16px;position:relative;z-index:1}.action-card .action-card-icon{width:48px;height:48px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;flex-shrink:0;background:rgba(255,255,255,.2);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.1);box-shadow:inset 0 1px 0 rgba(255,255,255,.1);color:white}.action-card .action-card-icon svg{width:24px;height:24px}.action-card .action-card-title{font-size:20px;font-weight:700;letter-spacing:-.02em;color:white;margin-bottom:4px}.action-card .action-card-desc{font-size:14px;color:rgba(255,255,255,.8);font-weight:500;line-height:1.4;padding-right:40px}.action-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-bottom:32px}.action-card .action-icon{width:48px;height:48px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;flex-shrink:0}.action-card .action-icon.purple{background:var(--accent-purple-light);color:var(--accent-purple)}.action-card .action-icon.orange{background:var(--accent-orange-light);color:var(--accent-orange)}.action-card .action-icon svg{width:24px;height:24px}.action-card .action-content h3{font-size:16px;font-weight:600;color:var(--text-primary);margin-bottom:4px}.action-card .action-content p{font-size:13px;color:var(--text-secondary)}.note-content-section{background:var(--bg-secondary);border-radius:var(--radius-lg);padding:32px;border:1px solid var(--border-light)}.note-content-section h2{font-size:20px;font-weight:600;color:var(--text-primary);margin-bottom:20px;padding-bottom:16px;border-bottom:1px solid var(--border-light)}.markdown-content{font-family:Inter,-apple-system,BlinkMacSystemFont,SF Pro Text,sans-serif;font-size:16px;line-height:1.75;color:var(--text-secondary);letter-spacing:-.01em}.markdown-content h1{font-size:28px;letter-spacing:-.04em;margin-bottom:24px}.markdown-content h1,.markdown-content h2{font-family:Inter,-apple-system,BlinkMacSystemFont,SF Pro Display,sans-serif;font-weight:700;color:var(--text-primary)}.markdown-content h2{font-size:20px;letter-spacing:-.03em;margin-top:32px;margin-bottom:12px}.markdown-content h3{font-size:16px;font-weight:600;color:var(--text-primary);margin-top:24px;margin-bottom:12px}.markdown-content p{margin-bottom:16px}.markdown-content ul{margin-bottom:16px;padding-left:0;list-style:none}.markdown-content li{margin-bottom:10px;padding-left:24px;position:relative}.markdown-content li:before{content:"";position:absolute;left:8px;top:10px;width:6px;height:6px;border-radius:50%;background:var(--accent-blue)}.markdown-content ol{padding-left:24px;margin-bottom:16px}.markdown-content blockquote{margin:24px 0;color:var(--text-secondary);background:rgba(0,113,227,.04);padding:16px 20px;border-radius:0 var(--radius-md) var(--radius-md) 0}.markdown-content strong{font-weight:600;color:var(--text-primary)}.markdown-content code{background:var(--bg-tertiary);padding:2px 6px;border-radius:4px;font-family:SF Mono,Monaco,monospace;font-size:13px}.markdown-content pre{background:var(--bg-tertiary);padding:16px;border-radius:var(--radius-md);overflow-x:auto;margin-bottom:16px}.markdown-content pre code{background:none;padding:0}.markdown-content blockquote{border-left:3px solid var(--accent-blue);padding-left:16px;margin:16px 0;color:var(--text-tertiary);font-style:italic}.flashcard-controls .btn-primary:hover{background:#2db550}.quiz-view{max-width:700px;margin:0 auto}.quiz-progress{display:flex;align-items:center;gap:16px;margin-bottom:32px}.quiz-progress-bar{flex:1;height:8px;background:var(--bg-tertiary);border-radius:4px;overflow:hidden}.quiz-progress-fill{height:100%;background:var(--accent-blue);border-radius:4px;transition:width var(--transition-slow)}.quiz-progress-text{font-size:14px;color:var(--text-secondary);white-space:nowrap}.quiz-question-card{background:var(--bg-secondary);border-radius:var(--radius-xl);padding:32px;border:1px solid var(--border-light)}.quiz-question-card h2{font-size:20px;font-weight:600;color:var(--text-primary);margin-bottom:24px}.quiz-options{display:flex;flex-direction:column;gap:12px}.quiz-option{display:flex;align-items:center;gap:16px;padding:16px 20px;background:var(--bg-tertiary);border:2px solid transparent;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast)}.quiz-option.selected,.quiz-option:hover{border-color:var(--accent-blue);background:var(--accent-blue-light)}.quiz-option.correct{border-color:var(--accent-green);background:var(--accent-green-light)}.quiz-option.incorrect{border-color:var(--accent-red);background:#ffebee}.quiz-option .option-letter{width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:var(--bg-secondary);border-radius:50%;font-weight:600;color:var(--text-primary);flex-shrink:0}.quiz-option .option-text{font-size:15px;color:var(--text-primary)}.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .2s ease}.modal{background:var(--bg-secondary);border-radius:var(--radius-xl);width:90%;max-width:480px;max-height:90vh;overflow-y:auto;animation:slideUp .3s ease}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid var(--border-light)}.modal-header h2{font-size:18px;font-weight:600;color:var(--text-primary)}.modal-close{width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);color:var(--text-secondary);cursor:pointer;border:none;background:none;transition:all var(--transition-fast)}.modal-close:hover{background:var(--bg-tertiary);color:var(--text-primary)}.modal-close svg{width:20px;height:20px}.modal-body{padding:24px}.modal-footer{display:flex;justify-content:flex-end;gap:12px;padding:20px 24px;border-top:1px solid var(--border-light)}.form-group{margin-bottom:20px}.form-label{display:block;font-weight:500;margin-bottom:8px}.form-input,.form-label{font-size:14px;color:var(--text-primary)}.form-input{width:100%;padding:12px 16px;background:var(--bg-tertiary);border:1px solid var(--border-light);border-radius:var(--radius-md);transition:all var(--transition-fast)}.form-input:focus{outline:none;border-color:var(--accent-blue);box-shadow:0 0 0 3px var(--accent-blue-light)}.form-input::-moz-placeholder{color:var(--text-secondary)}.form-input::placeholder{color:var(--text-secondary)}.slider-group{margin-bottom:20px}.slider-header{display:flex;justify-content:space-between;margin-bottom:12px}.slider-label{font-size:14px;font-weight:500;color:var(--text-primary)}.slider-value{font-size:14px;font-weight:600;color:var(--accent-blue)}.slider{width:100%;height:6px;-webkit-appearance:none;-moz-appearance:none;appearance:none;background:var(--bg-tertiary);border-radius:3px;outline:none}.slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:20px;height:20px;background:var(--accent-blue);border-radius:50%;cursor:pointer;-webkit-transition:all var(--transition-fast);transition:all var(--transition-fast)}.slider::-webkit-slider-thumb:hover{transform:scale(1.1)}.color-picker{display:flex;gap:8px;flex-wrap:wrap}.color-option{width:32px;height:32px;border-radius:50%;cursor:pointer;border:2px solid transparent;transition:all var(--transition-fast)}.color-option:hover{transform:scale(1.1)}.color-option.selected{border-color:var(--text-primary)}.generation-modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .2s ease}.generation-modal{background:var(--bg-secondary);border-radius:var(--radius-xl);width:90%;max-width:440px;padding:32px;box-shadow:var(--shadow-xl);animation:slideUp .3s ease}.generation-modal-header{display:flex;align-items:flex-start;gap:16px;margin-bottom:24px;position:relative}.generation-modal-icon{width:56px;height:56px;border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;flex-shrink:0}.generation-modal-icon.quiz{background:linear-gradient(135deg,var(--accent-purple) 0,#5E5CE6 100%);color:white}.generation-modal-icon.flashcards{background:linear-gradient(135deg,var(--accent-teal) 0,#5AC8FA 100%);color:white}.generation-modal-icon svg{width:28px;height:28px}.generation-modal-title{font-size:20px;font-weight:600;letter-spacing:-.02em;color:var(--text-primary);margin-bottom:4px}.generation-modal-subtitle{font-size:14px;color:var(--text-secondary)}.generation-modal-close{position:absolute;top:0;right:0;width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);color:var(--text-secondary);cursor:pointer;border:none;background:none;transition:all var(--transition-fast)}.generation-modal-close:hover{background:var(--bg-tertiary);color:var(--text-primary)}.generation-modal-document{display:flex;align-items:center;gap:10px;padding:14px 16px;background:var(--bg-tertiary);border-radius:var(--radius-md);margin-bottom:24px}.generation-modal-document svg{color:var(--text-secondary)}.generation-modal-document span{font-size:14px;font-weight:500;color:var(--text-primary)}.generation-scope-selector{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-bottom:24px}.generation-scope-selector .scope-btn{padding:12px 16px;border:1px solid var(--border-light);border-radius:var(--radius-md);background:var(--bg-secondary);color:var(--text-secondary);font-size:14px;font-weight:500;cursor:pointer;transition:all var(--transition-fast)}.generation-scope-selector .scope-btn:hover{background:var(--bg-tertiary);color:var(--text-primary)}.generation-scope-selector .scope-btn.active{background:var(--accent-blue-light);border-color:var(--accent-blue);color:var(--accent-blue)}.generation-slider-section{margin-bottom:24px}.generation-slider-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.generation-slider-label{font-size:14px;font-weight:500;color:var(--text-primary)}.generation-slider-value{font-size:18px;font-weight:700;color:var(--accent-purple)}.generation-slider.flashcards+* .generation-slider-value,.generation-slider.flashcards~.generation-slider-header .generation-slider-value{color:var(--accent-teal)}.generation-slider{width:100%;height:6px;-moz-appearance:none;appearance:none;-webkit-appearance:none;background:var(--bg-tertiary);border-radius:3px;outline:none;cursor:pointer}.generation-slider::-webkit-slider-thumb{appearance:none;-webkit-appearance:none;width:22px;height:22px;background:linear-gradient(135deg,var(--accent-purple) 0,#5E5CE6 100%);border-radius:50%;cursor:pointer;box-shadow:0 2px 8px rgba(175,82,222,.3);-webkit-transition:transform var(--transition-fast);transition:transform var(--transition-fast)}.generation-slider::-webkit-slider-thumb:hover{transform:scale(1.1)}.generation-slider.flashcards::-webkit-slider-thumb{background:linear-gradient(135deg,var(--accent-teal) 0,#5AC8FA 100%);box-shadow:0 2px 8px rgba(90,200,250,.3)}.generation-slider::-moz-range-thumb{width:22px;height:22px;background:linear-gradient(135deg,var(--accent-purple) 0,#5E5CE6 100%);border:none;border-radius:50%;cursor:pointer;box-shadow:0 2px 8px rgba(175,82,222,.3)}.generation-slider.flashcards::-moz-range-thumb{background:linear-gradient(135deg,var(--accent-teal) 0,#5AC8FA 100%);box-shadow:0 2px 8px rgba(90,200,250,.3)}.generation-slider-range{display:flex;justify-content:space-between;margin-top:8px;font-size:12px;color:var(--text-tertiary)}.generation-modal-description{font-size:14px;color:var(--text-secondary);line-height:1.6;margin-bottom:24px}.generation-modal-description strong{color:var(--text-primary);font-weight:600}.generation-modal-error{display:flex;align-items:center;gap:10px;padding:12px 16px;background:rgba(255,45,85,.1);border:1px solid rgba(255,45,85,.2);border-radius:var(--radius-md);margin-bottom:24px}.generation-modal-error svg{color:var(--accent-red);flex-shrink:0}.generation-modal-error span{font-size:13px;color:var(--accent-red)}.generation-modal-actions{display:flex;gap:12px;margin-bottom:20px}.generation-modal-actions .btn{flex:1;justify-content:center;padding:14px 24px}.generation-modal-actions .btn.btn-primary.flashcards{background:linear-gradient(135deg,var(--accent-teal) 0,#5AC8FA 100%)}.generation-modal-actions .btn.btn-primary.flashcards:hover{background:linear-gradient(135deg,#00B4AA,#4AC3E5)}.generation-modal-warning{display:flex;align-items:center;justify-content:center;gap:8px;font-size:12px;color:var(--text-tertiary)}.generation-modal-warning svg{color:var(--accent-orange)}.loading-spinner-small{width:16px;height:16px;border-radius:50%;border:2px solid rgba(255,255,255,.3);border-top-color:white;animation:spin .8s linear infinite;margin-right:8px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;border-radius:9999px;font-size:14px;font-weight:500;letter-spacing:-.01em;cursor:pointer;transition:all var(--transition-fast);border:none;font-family:inherit}.btn-primary{background:#1d1d1f;color:white;box-shadow:none}.btn-primary:hover{background:#333336}.btn-primary:active{transform:translateY(0)}.btn-primary svg{width:18px;height:18px}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary)}.btn-secondary:hover{background:#ebebed}.btn-danger{background:var(--accent-red);color:white}.btn-danger:hover{background:#e63329}.settings-tabs{display:flex;border-bottom:1px solid var(--border-light);padding:0 24px}.settings-tab{padding:16px 20px;font-size:14px;font-weight:500;color:var(--text-secondary);cursor:pointer;background:none;border:none;border-bottom:2px solid transparent;transition:all var(--transition-fast)}.settings-tab:hover{color:var(--text-primary)}.settings-tab.active{color:var(--accent-blue);border-bottom-color:var(--accent-blue)}.settings-content{padding:24px}.settings-section{margin-bottom:24px}.settings-section h3{font-size:16px;font-weight:600;color:var(--text-primary);margin-bottom:16px}.settings-row{display:flex;align-items:center;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--border-light)}.settings-row:last-child{border-bottom:none}.settings-row .setting-info{flex:1}.settings-row .setting-label{font-size:14px;font-weight:500;color:var(--text-primary)}.settings-row .setting-desc{font-size:13px;color:var(--text-secondary)}.toggle-switch{position:relative;width:48px;height:28px;background:var(--bg-tertiary);border-radius:14px;cursor:pointer;transition:all var(--transition-fast)}.toggle-switch.active{background:var(--accent-green)}.toggle-switch:after{content:"";position:absolute;top:3px;left:3px;width:22px;height:22px;background:white;border-radius:50%;box-shadow:var(--shadow-sm);transition:all var(--transition-fast)}.toggle-switch.active:after{left:23px}.empty-state{text-align:center;padding:60px 20px}.empty-state .empty-icon{width:80px;height:80px;background:var(--bg-tertiary);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 20px}.empty-state .empty-icon svg{width:40px;height:40px;color:var(--text-secondary)}.empty-state h3{font-size:18px;font-weight:600;color:var(--text-primary);margin-bottom:8px}.empty-state p{font-size:14px;color:var(--text-secondary);margin-bottom:20px}.loading-spinner{width:40px;height:40px;border:3px solid var(--border-light);border-top-color:var(--accent-blue);border-radius:50%;animation:spin .8s linear infinite}.skeleton{background:linear-gradient(90deg,var(--bg-tertiary) 25%,var(--bg-hover) 50%,var(--bg-tertiary) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:var(--radius-md)}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}@media (max-width:1200px){.notes-grid,.stats-grid{grid-template-columns:repeat(2,1fr)}.dashboard-bottom-grid{grid-template-columns:1fr}}@media (max-width:768px){.sidebar{transform:translateX(-100%);transition:transform var(--transition-slow)}.sidebar.mobile-open{transform:translateX(0)}.main-content{margin-left:0;padding:20px}.action-cards,.notes-grid,.stats-grid{grid-template-columns:1fr}.library-header{flex-direction:column;align-items:stretch;gap:16px}.library-controls{flex-wrap:wrap}.search-box{width:100%}.mobile-menu-btn{display:flex}}.mobile-menu-btn{display:none;position:fixed;top:16px;left:16px;width:44px;height:44px;background:var(--bg-secondary);border:1px solid var(--border-light);border-radius:var(--radius-md);align-items:center;justify-content:center;cursor:pointer;z-index:101;box-shadow:var(--shadow-sm)}.mobile-menu-btn svg{width:24px;height:24px;color:var(--text-primary)}.mobile-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.3);z-index:99}@media (max-width:768px){.mobile-overlay.visible{display:block}}.upload-zone{border:2px dashed var(--border-color);border-radius:var(--radius-lg);padding:40px 20px;text-align:center;transition:all var(--transition-fast);cursor:pointer}.upload-zone.dragging,.upload-zone:hover{border-color:var(--accent-blue);background:var(--accent-blue-light)}.upload-zone .upload-icon{width:64px;height:64px;background:var(--bg-tertiary);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 16px}.upload-zone .upload-icon svg{width:32px;height:32px;color:var(--accent-blue)}.upload-zone h3{font-size:16px;font-weight:600;color:var(--text-primary);margin-bottom:8px}.upload-zone p{font-size:14px;color:var(--text-secondary)}.upload-zone .browse-link{color:var(--accent-blue);font-weight:500}.file-list{margin-top:16px}.file-item{display:flex;align-items:center;gap:12px;padding:12px;background:var(--bg-tertiary);border-radius:var(--radius-md);margin-bottom:8px}.file-item .file-icon{width:40px;height:40px;background:var(--bg-secondary);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center}.file-item .file-icon svg{width:20px;height:20px;color:var(--text-secondary)}.file-item .file-info{flex:1;min-width:0}.file-item .file-name{font-size:14px;font-weight:500;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.file-item .file-size{font-size:12px;color:var(--text-secondary)}.file-item .remove-btn{width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);color:var(--text-secondary);cursor:pointer;border:none;background:none;transition:all var(--transition-fast)}.file-item .remove-btn:hover{background:var(--accent-red);color:white}.welcome-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg-primary);padding:40px 20px}.welcome-content{text-align:center;max-width:500px}.welcome-icon{width:80px;height:80px;background:var(--accent-blue);border-radius:var(--radius-xl);display:flex;align-items:center;justify-content:center;margin:0 auto 24px}.welcome-icon svg{width:40px;height:40px;color:white}.welcome-content h1{font-size:32px;font-weight:600;color:var(--text-primary);margin-bottom:12px}.welcome-content p{font-size:16px;color:var(--text-secondary);margin-bottom:32px}.text-primary{color:var(--text-primary)}.text-secondary{color:var(--text-secondary)}.text-tertiary{color:var(--text-tertiary)}.text-blue{color:var(--accent-blue)}.text-green{color:var(--accent-green)}.text-orange{color:var(--accent-orange)}.text-purple{color:var(--accent-purple)}.bg-blue-light{background:var(--accent-blue-light)}.bg-green-light{background:var(--accent-green-light)}.bg-orange-light{background:var(--accent-orange-light)}.bg-purple-light{background:var(--accent-purple-light)}.truncate{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}.main-container{max-width:1200px;margin:0 auto;background:white;min-height:100vh;position:relative;overflow:hidden}@media (min-width:769px){.main-container{margin:2rem auto;background:radial-gradient(circle at 1px 1px,rgba(0,0,0,.018) 1px,transparent 0),white;background-size:20px 20px;border:1px solid #e5e7eb;border-radius:1rem;min-height:calc(100vh - 4rem);box-shadow:0 4px 6px -1px rgba(0,0,0,.05)}}.whiteboard-hero{position:relative;border-radius:1.25rem;background:radial-gradient(120% 120% at 50% -20%,rgba(255,255,255,.8),rgba(248,250,252,.6) 60%,transparent 100%),linear-gradient(180deg,#ffffff,#f9fafb);border:1px solid rgba(209,213,219,1);box-shadow:0 24px 60px rgba(2,6,23,.08),inset 0 1px 0 rgba(255,255,255,.7),inset 0 -1px 0 rgba(0,0,0,.03);overflow:hidden;min-height:600px}.whiteboard-hero:before{content:"";position:absolute;inset:0;background-image:radial-gradient(1px 1px at 20% 30%,rgba(2,6,23,.05),transparent 60%),radial-gradient(1px 1px at 70% 60%,rgba(2,6,23,.04),transparent 60%),radial-gradient(2px 2px at 40% 80%,rgba(2,6,23,.03),transparent 60%),radial-gradient(1px 1px at 80% 25%,rgba(2,6,23,.04),transparent 60%);pointer-events:none;z-index:0}.whiteboard-hero>*{position:relative;z-index:2}.gradient-text{background:linear-gradient(135deg,#1e3a8a,#3b82f6,#1d4ed8,#1e40af);background-size:300% 300%;-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent;animation:gradient-flow 6s ease-in-out infinite;letter-spacing:-.06em}@keyframes gradient-flow{0%,to{background-position:0 50%}50%{background-position:100% 50%}}.gradient-border{position:relative;background:#e5e7eb;padding:1px;border-radius:1rem}.gradient-border:before{content:"";position:absolute;inset:-1px;background:#e5e7eb;border-radius:inherit;z-index:-1}.glass-effect{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:radial-gradient(circle at 1px 1px,rgba(0,0,0,.005) 1px,transparent 0),rgba(255,255,255,.95);background-size:16px 16px;border:1px solid rgba(255,255,255,.2);border-radius:1rem;box-shadow:0 8px 32px rgba(0,0,0,.08),0 4px 16px rgba(0,0,0,.04),inset 0 1px 0 rgba(255,255,255,.4)}.feature-card{background:white;border-radius:1rem;padding:2rem;border:1px solid #e5e7eb;transition:all .3s ease}.feature-card:hover{transform:translateY(-4px);box-shadow:0 20px 40px rgba(0,0,0,.1)}.pricing-card{background:white;border-radius:1.5rem;padding:2rem;border:1px solid #e5e7eb;transition:all .3s ease}.pricing-card.popular{border-color:#3b82f6;box-shadow:0 20px 40px rgba(59,130,246,.15)}.pricing-card:hover{transform:translateY(-4px);box-shadow:0 20px 40px rgba(0,0,0,.1)}.dashboard-layout{display:flex;min-height:100vh;background:var(--bg-primary)}.dashboard-main{flex:1;min-height:100vh;margin-left:260px;transition:margin-left .3s ease;overflow-x:hidden}.dashboard-main.sidebar-collapsed{margin-left:72px}.dashboard-content{padding:24px 32px;max-width:100%;overflow-x:hidden}.dashboard-content .max-w-4xl{max-width:56rem;margin-left:auto;margin-right:auto;padding-left:16px;padding-right:16px}@media (max-width:1024px){.dashboard-main{margin-left:72px}.dashboard-content{padding:20px 24px}}@media (max-width:768px){.dashboard-main{margin-left:0}.dashboard-content{padding:16px}.dashboard-content .max-w-4xl{padding-left:8px;padding-right:8px}}.dashboard-main-clean{flex:1;min-height:100vh;transition:margin-left .3s ease}.dashboard-main-clean.sidebar-expanded{margin-left:260px}.dashboard-main-clean.sidebar-collapsed{margin-left:72px}.main-content-clean{padding:32px 40px}.content-item{background:var(--bg-secondary);border-radius:var(--radius-lg);padding:20px;border:1px solid var(--border-light);cursor:pointer;transition:all var(--transition-fast)}.content-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--accent-blue)}.content-items{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.hero-section{padding:80px 40px;text-align:center}.hero-title{font-size:3.5rem;font-weight:700;line-height:1.1;margin-bottom:24px}.hero-subtitle{font-size:1.25rem;color:#6b7280;max-width:600px;margin:0 auto 40px}.cta-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:16px 32px;background:linear-gradient(135deg,#3b82f6,#1d4ed8);color:white;border:none;border-radius:12px;font-size:16px;font-weight:600;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 14px rgba(59,130,246,.4)}.cta-button:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(59,130,246,.5)}.cta-button-secondary{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:16px 32px;background:white;color:#1d4ed8;border:2px solid #e5e7eb;border-radius:12px;font-size:16px;font-weight:600;cursor:pointer;transition:all .3s ease}.cta-button-secondary:hover{border-color:#3b82f6;background:#f0f9ff}.testimonial-card{background:white;border-radius:1rem;padding:1.5rem;border:1px solid #e5e7eb}.landing-nav{position:fixed;top:0;left:0;right:0;background:rgba(255,255,255,.9);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid #e5e7eb;z-index:1000;padding:16px 40px}.landing-nav-content{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between}.landing-footer{background:#f9fafb;border-top:1px solid #e5e7eb;padding:60px 40px}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes board-shine{0%,to{background-position:0 0,0 0,0 0,0 50%,0 0,0 0}50%{background-position:0 0,0 0,0 0,100% 50%,0 0,0 0}}.float-animation{animation:float 3s ease-in-out infinite}.stats-section{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:40px;background:#f9fafb;border-radius:1rem}.stat-item{text-align:center}.stat-number{font-size:2.5rem;font-weight:700;color:#1e3a8a}.stat-text{font-size:.875rem;color:#6b7280;margin-top:4px}.how-it-works{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}.step-card{text-align:center;padding:32px}.step-number{width:48px;height:48px;background:linear-gradient(135deg,#3b82f6,#1d4ed8);color:white;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:1.25rem;margin:0 auto 16px}@media (max-width:768px){.hero-title{font-size:2.5rem}.hero-section{padding:60px 20px}.stats-section{grid-template-columns:repeat(2,1fr)}.how-it-works{grid-template-columns:1fr}.main-container{margin:0;min-height:100vh}}.content-reader-layout{display:flex;min-height:100vh;background:var(--bg-primary)}.content-reader-layout.dark{background:#0f172a}.content-reader-layout.sepia{background:#f5f0e6}.content-reader-main{flex:1;min-height:100vh;transition:margin-left .3s ease}.content-reader-main.sidebar-expanded{margin-left:260px}.content-reader-main.sidebar-collapsed{margin-left:72px}.content-header{display:flex;align-items:center;justify-content:space-between;padding:16px 32px;background:var(--bg-secondary);border-bottom:1px solid var(--border-light);position:sticky;top:0;z-index:50}.header-navigation{display:flex;align-items:center;gap:16px}.back-button{display:flex;align-items:center;gap:8px;padding:8px 12px;background:none;border:none;color:var(--accent-blue);font-size:14px;font-weight:500;cursor:pointer;border-radius:var(--radius-sm);transition:all var(--transition-fast)}.back-button:hover{background:var(--bg-tertiary)}.back-button .icon{width:18px;height:18px}.breadcrumb{gap:8px;font-size:14px;color:var(--text-secondary)}.breadcrumb,.breadcrumb-item{display:flex;align-items:center}.breadcrumb-item{gap:6px}.breadcrumb-item.clickable{cursor:pointer;padding:4px 8px;border-radius:var(--radius-sm);transition:all var(--transition-fast)}.breadcrumb-item.clickable:hover{background:var(--bg-tertiary);color:var(--text-primary)}.breadcrumb-item .icon{width:14px;height:14px}.breadcrumb-item .edit-icon{width:12px;height:12px;opacity:0;transition:opacity var(--transition-fast)}.breadcrumb-item:hover .edit-icon{opacity:.5}.breadcrumb-separator{color:var(--text-secondary);opacity:.5}.breadcrumb-current{color:var(--text-primary);font-weight:500}.folder-select{padding:6px 12px;background:var(--bg-secondary);border:1px solid var(--border-light);border-radius:var(--radius-sm);font-size:14px;color:var(--text-primary)}.header-actions{display:flex;align-items:center;gap:12px}.search-container{display:flex;align-items:center;gap:8px;padding:8px 12px;background:var(--bg-tertiary);border-radius:var(--radius-md);min-width:200px}.search-container .search-icon{width:16px;height:16px;color:var(--text-secondary)}.search-container .search-input{flex:1;background:none;border:none;font-size:14px;color:var(--text-primary);outline:none}.reader-controls{gap:8px}.control-btn,.reader-controls{display:flex;align-items:center}.control-btn{width:36px;height:36px;justify-content:center;background:none;border:none;border-radius:var(--radius-sm);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast)}.control-btn:hover{background:var(--bg-tertiary);color:var(--text-primary)}.control-btn.active{background:var(--accent-blue-light);color:var(--accent-blue)}.control-btn .icon{width:18px;height:18px}.font-size-indicator{font-size:12px;color:var(--text-secondary);min-width:36px;text-align:center}.control-divider{width:1px;height:24px;background:var(--border-light);margin:0 4px}.content-body{display:flex;padding:32px;gap:32px;max-width:1400px;margin:0 auto}.content-main{flex:1;min-width:0}.table-of-contents{width:260px;flex-shrink:0;position:sticky;top:100px;max-height:calc(100vh - 140px);overflow-y:auto;background:var(--bg-secondary);border-radius:var(--radius-lg);border:1px solid var(--border-light);padding:20px}.toc-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--border-light)}.toc-header h3{font-size:14px;font-weight:600;color:var(--text-primary)}.toc-close{width:28px;height:28px;display:flex;align-items:center;justify-content:center;background:none;border:none;border-radius:var(--radius-sm);color:var(--text-secondary);cursor:pointer}.toc-close:hover{background:var(--bg-tertiary)}.toc-close .icon{width:16px;height:16px}.toc-nav{display:flex;flex-direction:column;gap:4px}.toc-link{font-size:13px;color:var(--text-tertiary);text-decoration:none;padding:6px 8px;border-radius:var(--radius-sm);transition:all var(--transition-fast)}.toc-link:hover{background:var(--bg-tertiary);color:var(--text-primary)}.toc-link.active{background:var(--accent-blue-light);color:var(--accent-blue)}.toc-link.level-2{padding-left:16px}.toc-link.level-3{padding-left:24px;font-size:12px}.toc-link.level-4{padding-left:32px;font-size:12px}.content-metadata{background:var(--bg-secondary);border-radius:var(--radius-lg);padding:24px;border:1px solid var(--border-light);margin-bottom:24px}.metadata-header{display:flex;gap:20px}.content-icon-large{width:56px;height:56px;background:var(--bg-tertiary);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;flex-shrink:0}.content-icon-large .icon{width:28px;height:28px;color:var(--text-secondary)}.metadata-info{flex:1}.content-title{font-size:24px;font-weight:600;color:var(--text-primary);margin-bottom:8px}.metadata-details{display:flex;flex-wrap:wrap;gap:16px}.metadata-item{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--text-secondary)}.metadata-item .icon{width:14px;height:14px}.status-badge{display:inline-block;padding:2px 10px;border-radius:12px;font-size:12px;font-weight:500;text-transform:capitalize}.status-badge.completed{background:var(--accent-green-light);color:var(--accent-green)}.status-badge.processing{background:var(--accent-orange-light);color:var(--accent-orange)}.status-badge.failed{background:#ffebee;color:var(--accent-red)}.content-text{background:var(--bg-secondary);border-radius:var(--radius-lg);padding:32px;border:1px solid var(--border-light);line-height:1.8}.no-content{text-align:center;padding:60px 20px}.no-content-icon{margin-bottom:16px}.content-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;padding-top:24px;border-top:1px solid var(--border-light)}.action-btn{display:flex;align-items:center;gap:8px;padding:10px 16px;background:var(--bg-tertiary);border:1px solid var(--border-light);border-radius:var(--radius-md);font-size:14px;color:var(--text-tertiary);cursor:pointer;transition:all var(--transition-fast)}.action-btn:hover{background:var(--bg-hover);border-color:var(--border-color)}.action-btn.primary{background:var(--accent-blue);border-color:var(--accent-blue);color:white}.action-btn.primary:hover{background:#0066d6}.action-btn .icon{width:16px;height:16px}.copy-feedback{position:fixed;bottom:100px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:8px;padding:12px 20px;background:var(--text-primary);color:white;border-radius:var(--radius-md);font-size:14px;box-shadow:var(--shadow-lg);z-index:1000;animation:slideUp .3s ease}.copy-feedback .icon{width:18px;height:18px}.audio-player{background:var(--bg-tertiary);border-radius:var(--radius-md);padding:16px;margin-top:16px}.player-controls{gap:16px}.play-button,.player-controls{display:flex;align-items:center}.play-button{width:44px;height:44px;justify-content:center;background:var(--accent-blue);border:none;border-radius:50%;color:white;cursor:pointer;transition:all var(--transition-fast)}.play-button:hover{background:#0066d6;transform:scale(1.05)}.play-button .icon{width:20px;height:20px}.progress-container{flex:1;display:flex;align-items:center;gap:12px}.time-display{font-size:12px;color:var(--text-secondary);font-variant-numeric:tabular-nums;min-width:40px}.volume-controls{display:flex;align-items:center;gap:8px}.volume-button{width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:none;border:none;border-radius:var(--radius-sm);color:var(--text-secondary);cursor:pointer}.volume-button:hover{background:var(--bg-hover)}.volume-slider input{width:80px}@media (max-width:1024px){.content-body{flex-direction:column}.table-of-contents{width:100%;position:static;max-height:none}}@media (max-width:768px){.content-header{flex-direction:column;align-items:stretch;gap:16px;padding:16px}.header-actions{flex-wrap:wrap}.content-body{padding:16px}.content-text{padding:20px}.content-reader-main.sidebar-collapsed,.content-reader-main.sidebar-expanded{margin-left:0}}.project-layout{background:#F5F5F7;overflow:hidden}.project-layout,.project-loading{display:flex;flex-direction:column;height:100vh}.project-loading{align-items:center;justify-content:center;gap:16px;color:var(--text-secondary);font-size:14px}.project-loading-spinner{width:32px;height:32px;border:3px solid var(--border-color);border-top-color:var(--accent-blue);border-radius:50%;animation:spin .8s linear infinite}.project-breadcrumb{display:flex;align-items:center;justify-content:space-between;height:56px;min-height:56px;padding:0 20px;border-bottom:1px solid rgba(0,0,0,.03);background:#FBFBFD;z-index:10}.project-breadcrumb-left{display:flex;align-items:center;gap:12px;min-width:0}.project-breadcrumb-back{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border:none;background:var(--bg-tertiary);border-radius:var(--radius-sm);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);flex-shrink:0}.project-breadcrumb-back:hover{background:var(--bg-hover);color:var(--text-primary)}.project-breadcrumb-divider{width:1px;height:24px;background:var(--border-color);flex-shrink:0}.project-breadcrumb-logo{display:flex;align-items:center;gap:8px;border:none;background:none;cursor:pointer;padding:4px 8px;border-radius:var(--radius-sm);transition:background var(--transition-fast);flex-shrink:0}.project-breadcrumb-logo:hover{background:var(--bg-tertiary)}.project-breadcrumb-app-name{font-size:14px;font-weight:600;color:var(--text-primary);letter-spacing:-.01em}.project-breadcrumb-sep{color:var(--text-tertiary);flex-shrink:0}.project-breadcrumb-project-name{display:flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:#52525b;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:300px;border:none;background:none;cursor:pointer;padding:4px 8px;border-radius:6px;transition:all .2s ease}.project-breadcrumb-project-name:hover{background:rgba(0,0,0,.04);color:#18181b}.project-breadcrumb-edit-icon{opacity:0;color:#a1a1aa;transition:opacity .2s ease;flex-shrink:0}.project-breadcrumb-project-name:hover .project-breadcrumb-edit-icon{opacity:1}.project-breadcrumb-edit-input{font-size:14px;font-weight:500;color:#18181b;border:1px solid rgba(59,130,246,.3);background:white;padding:4px 8px;border-radius:6px;outline:none;box-shadow:0 0 0 3px rgba(59,130,246,.1);max-width:300px;font-family:inherit}.project-breadcrumb-right{display:flex;align-items:center;gap:8px}.project-breadcrumb-settings{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border:none;background:none;border-radius:var(--radius-sm);color:var(--text-tertiary);cursor:pointer;transition:all var(--transition-fast)}.project-breadcrumb-settings:hover{background:var(--bg-tertiary);color:var(--text-primary)}.project-mobile-tabs{display:none}.project-panels{display:grid;grid-template-columns:300px 1fr 340px;flex:1;min-height:0;overflow:hidden;position:relative}.project-panel-sources{border-right:1px solid rgba(0,0,0,.03);overflow-y:auto;background:#FBFBFD}.project-panel-workspace{overflow-y:auto;overflow-x:hidden;background:#F5F5F7;position:relative}.project-panel-studio{border-left:1px solid rgba(0,0,0,.03);overflow-y:auto;background:#FBFBFD}.project-panel-collapse-btn{display:flex;align-items:center;justify-content:center;width:28px;height:28px;border:none;border-radius:6px;background:transparent;color:var(--text-tertiary);cursor:pointer;transition:all .15s;flex-shrink:0}.project-panel-collapse-btn:hover{background:rgba(0,0,0,.05);color:var(--text-secondary)}.project-panel-collapsed{display:flex;align-items:center;justify-content:center;background:#FBFBFD;overflow:hidden}.project-panel-collapsed-left{border-right:1px solid rgba(0,0,0,.03)}.project-panel-collapsed-right{border-left:1px solid rgba(0,0,0,.03)}.project-panel-expand-btn{display:flex;flex-direction:column;align-items:center;gap:6px;padding:8px 4px;border:none;border-radius:6px;background:transparent;color:var(--text-tertiary);cursor:pointer;transition:all .15s;font-size:9px;font-weight:500;letter-spacing:.03em}.project-panel-expand-btn span{writing-mode:vertical-rl;text-orientation:mixed;font-size:11px}.project-panel-expand-btn:hover{color:var(--text-primary);background:rgba(0,0,0,.04)}.sources-panel{display:flex;flex-direction:column;height:100%;background:white}.sources-panel-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px 16px}.sources-panel-header-left{display:flex;align-items:center;gap:10px}.sources-panel-menu-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border:none;background:none;border-radius:var(--radius-sm);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast)}.sources-panel-menu-btn:hover{background:var(--bg-tertiary);color:var(--text-primary)}.sources-panel-title{font-size:20px;font-weight:600;color:#0f172a;letter-spacing:-.025em}.sources-panel-search-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border:none;background:none;border-radius:var(--radius-sm);color:var(--text-tertiary);cursor:pointer;transition:all var(--transition-fast)}.sources-panel-search-btn:hover{background:var(--bg-tertiary);color:var(--text-primary)}.sources-panel-search{display:flex;align-items:center;gap:8px;margin:0 16px 12px;padding:8px 12px;background:var(--bg-tertiary);border-radius:var(--radius-sm);border:1px solid var(--border-color)}.sources-panel-search-icon{color:var(--text-tertiary);flex-shrink:0}.sources-panel-search-input{flex:1;border:none;background:none;font-size:13px;color:var(--text-primary);outline:none}.sources-panel-search-input::-moz-placeholder{color:var(--text-tertiary)}.sources-panel-search-input::placeholder{color:var(--text-tertiary)}.sources-panel-add{padding:0 16px 16px}.sources-panel-add-btn{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:10px 20px;border:none;background:linear-gradient(135deg,#007AFF 0,var(--accent-blue) 100%);border-radius:var(--radius-lg);color:white;font-size:14px;font-weight:500;letter-spacing:-.01em;cursor:pointer;transition:all var(--transition-fast);box-shadow:0 4px 12px rgba(0,113,227,.25)}.sources-panel-add-btn:hover{transform:translateY(-1px);box-shadow:0 6px 20px rgba(0,113,227,.35)}.sources-panel-add-btn:active{transform:translateY(0)}.sources-panel-add-icon{color:white}.sources-panel-add-icon,.sources-panel-tabs{display:flex;align-items:center;justify-content:center}.sources-panel-tabs{padding:0 16px;margin-bottom:12px}.sources-panel-active-pill{display:inline-block;padding:8px 20px;background:rgba(0,122,255,.08);border-radius:9999px;font-size:11px;font-weight:700;color:#007AFF;letter-spacing:.04em;text-transform:uppercase;text-align:center}.sources-panel-list{flex:1;overflow-y:auto;padding:0 16px}.sources-panel-file{display:flex;align-items:center;gap:14px;padding:12px 8px;margin-bottom:6px;border-radius:var(--radius-md);transition:all var(--transition-fast);cursor:pointer;background:transparent}.sources-panel-file.selected,.sources-panel-file:hover{background:var(--bg-tertiary)}.sources-panel-file-checkbox{display:flex;align-items:center;justify-content:center;width:22px;height:22px;min-width:22px;flex-shrink:0;border-radius:50%;border:2px solid #d1d5db;background:transparent;color:transparent;transition:all var(--transition-fast)}.sources-panel-file:hover .sources-panel-file-checkbox:not(.checked){border-color:#9ca3af}.sources-panel-file-checkbox.checked{background:var(--text-secondary);border-color:var(--text-secondary);color:white}.sources-panel-file-details{flex:1;min-width:0;position:relative;z-index:1}.sources-panel-file-name{display:block;font-size:14px;font-weight:600;letter-spacing:-.01em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:1.3;transition:color var(--transition-fast)}.sources-panel-file-name,.sources-panel-file.selected .sources-panel-file-name,.sources-panel-file:hover .sources-panel-file-name{color:var(--text-primary)}.sources-panel-file-meta{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--text-tertiary);margin-top:3px}.sources-panel-dot{width:3px;height:3px;border-radius:50%;background:#cbd5e1}.sources-panel-extraction-status{flex-shrink:0;display:flex;align-items:center;position:relative;z-index:1}.sources-panel-spin{animation:spin 1s linear infinite}.sources-panel-delete-btn{flex-shrink:0;display:flex;align-items:center;justify-content:center;width:28px;height:28px;border:none;border-radius:var(--radius-sm);background:none;color:var(--text-tertiary);cursor:pointer;opacity:0;transition:opacity .15s ease,color .15s ease,background .15s ease;position:relative;z-index:1}.sources-panel-file:hover .sources-panel-delete-btn{opacity:1}.sources-panel-delete-btn:hover{color:#FF3B30;background:rgba(255,59,48,.1)}.sources-panel-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:48px 24px;text-align:center}.sources-panel-empty-icon{color:var(--text-tertiary);opacity:.3;margin-bottom:16px}.sources-panel-empty-title{font-size:14px;font-weight:600;color:var(--text-secondary);margin-bottom:4px}.sources-panel-empty-desc{font-size:12px;color:var(--text-tertiary)}.sources-panel-feedback{padding:12px 16px;border-top:1px solid var(--border-color);flex-shrink:0}.sources-panel-feedback-btn{display:flex;align-items:center;gap:6px;background:none;border:none;color:var(--text-tertiary);font-size:12px;cursor:pointer;padding:4px 0;transition:color .15s ease}.sources-panel-feedback-btn:hover{color:var(--text-secondary)}.sources-panel-feedback-form{display:flex;flex-direction:column;gap:8px}.sources-panel-feedback-header{display:flex;align-items:center;justify-content:space-between}.sources-panel-feedback-label{font-size:12px;font-weight:600;color:var(--text-secondary)}.sources-panel-feedback-close{background:none;border:none;color:var(--text-tertiary);cursor:pointer;padding:2px;display:flex;align-items:center}.sources-panel-feedback-close:hover{color:var(--text-secondary)}.sources-panel-feedback-textarea{width:100%;padding:8px 10px;border-radius:8px;border:1px solid var(--border-color);background:var(--bg-primary);color:var(--text-primary);font-size:13px;font-family:inherit;resize:vertical;min-height:60px;outline:none;transition:border-color .15s ease}.sources-panel-feedback-textarea:focus{border-color:var(--accent-blue,#0071e3)}.sources-panel-feedback-textarea::-moz-placeholder{color:var(--text-tertiary)}.sources-panel-feedback-textarea::placeholder{color:var(--text-tertiary)}.sources-panel-feedback-error{font-size:11px;color:#FF3B30}.sources-panel-feedback-submit{display:flex;align-items:center;gap:6px;align-self:flex-end;padding:6px 14px;border-radius:8px;border:none;background:var(--accent-blue,#0071e3);color:white;font-size:12px;font-weight:600;cursor:pointer;transition:opacity .15s ease}.sources-panel-feedback-submit:hover{opacity:.85}.sources-panel-feedback-submit:disabled{opacity:.5;cursor:not-allowed}.sources-panel-feedback-sent{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-secondary);padding:8px 0}.workspace-panel{display:flex;flex-direction:column;height:100%;position:relative;overflow:hidden}.workspace-panel-header{display:flex;align-items:center;justify-content:space-between;padding:16px 32px;gap:16px;min-height:56px;flex-shrink:0}.workspace-panel-header-left{flex-shrink:0}.workspace-panel-label{font-size:11px;font-weight:600;color:#a1a1aa;letter-spacing:.08em;text-transform:uppercase}.workspace-panel-filter-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border:none;background:none;border-radius:50%;color:#a1a1aa;cursor:pointer;transition:all .2s ease;flex-shrink:0}.workspace-panel-filter-btn:hover{color:#18181b}.workspace-panel-content{flex:1;overflow-y:auto;min-height:0;padding-bottom:140px}.workspace-panel-workspace{padding:0 32px 32px;max-width:56rem;margin:0 auto;width:100%;display:flex;flex-direction:column;gap:24px}.workspace-glass-card{background:rgba(255,255,255,.8);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.2);box-shadow:0 8px 30px rgba(0,0,0,.04);border-radius:16px;overflow:hidden}.workspace-glass-card-inner{padding:32px;display:flex;flex-direction:column;gap:16px}.workspace-glass-card-header{display:flex;align-items:baseline;justify-content:space-between;gap:16px}.workspace-glass-card-title{font-size:24px;font-weight:600;color:#18181b;letter-spacing:-.03em;line-height:1.2;margin:0}.workspace-glass-card-title-btn{display:flex;align-items:center;gap:10px;border:none;background:none;cursor:pointer;padding:4px 8px;margin:-4px -8px;border-radius:8px;transition:background .2s ease}.workspace-glass-card-title-btn:hover{background:rgba(0,0,0,.03)}.workspace-glass-card-edit-icon{opacity:0;color:#a1a1aa;transition:opacity .2s ease;flex-shrink:0}.workspace-glass-card-title-btn:hover .workspace-glass-card-edit-icon{opacity:1}.workspace-glass-card-title-input{font-size:24px;font-weight:600;color:#18181b;letter-spacing:-.03em;line-height:1.2;border:1px solid rgba(59,130,246,.3);background:white;padding:4px 8px;border-radius:8px;outline:none;box-shadow:0 0 0 3px rgba(59,130,246,.1);width:100%;font-family:inherit}.workspace-glass-card-badge{font-size:10px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:#2563eb;background:rgba(59,130,246,.06);padding:4px 10px;border-radius:4px;white-space:nowrap;flex-shrink:0}.workspace-glass-divider{height:1px;width:100%;background:linear-gradient(90deg,#e4e4e7,transparent);margin:4px 0}.workspace-glass-card-notes{display:flex;align-items:flex-start;gap:16px}.workspace-glass-card-notes-label{flex-shrink:0;width:48px;font-size:12px;font-weight:500;color:#a1a1aa;text-transform:uppercase;letter-spacing:.04em;margin-top:2px}.workspace-glass-card-notes-text{font-size:15px;color:#52525b;line-height:1.6;max-width:640px;margin:0}.workspace-empty-state{height:400px;width:100%;max-width:56rem;margin:0 auto;border-radius:24px;border:1px dashed #d4d4d8;background:rgba(255,255,255,.3);flex-direction:column;gap:16px;text-align:center}.workspace-empty-icon,.workspace-empty-state{display:flex;align-items:center;justify-content:center}.workspace-empty-icon{width:64px;height:64px;border-radius:16px;background:white;box-shadow:0 1px 3px rgba(0,0,0,.04);color:#d4d4d8}.workspace-empty-text h3{font-size:18px;font-weight:500;color:#18181b;margin:0 0 4px}.workspace-empty-text p{font-size:14px;color:#a1a1aa;max-width:280px;margin:0 auto}.workspace-floating-bar-container{position:absolute;bottom:0;left:0;right:0;padding:24px;pointer-events:none;display:flex;justify-content:center;background:linear-gradient(0deg,#F5F5F7 0,rgba(245,245,247,.8) 60%,transparent);z-index:10}.workspace-floating-bar{pointer-events:auto;width:100%;max-width:48rem}.workspace-floating-bar-inner{position:relative;display:flex;align-items:flex-end;gap:8px;padding:8px;background:rgba(255,255,255,.8);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.4);box-shadow:0 8px 40px rgba(0,0,0,.06);border-radius:32px;transition:all .3s ease}.workspace-floating-bar-inner:hover{box-shadow:0 12px 50px rgba(0,0,0,.1)}.workspace-floating-bar-inner:focus-within{box-shadow:0 12px 50px rgba(0,0,0,.1);outline:2px solid rgba(0,0,0,.05);outline-offset:-2px}.workspace-floating-btn{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;border:none;background:none;color:#a1a1aa;cursor:pointer;transition:all .2s ease;flex-shrink:0}.workspace-floating-btn:hover{background:rgba(0,0,0,.04);color:#52525b}.workspace-floating-input{flex:1;background:transparent;border:none;padding:10px 4px 10px 16px;min-height:44px;max-height:128px;font-size:16px;color:#18181b;resize:none;overflow:hidden;line-height:1.5;font-family:inherit;outline:none}.workspace-floating-input::-moz-placeholder{color:#a1a1aa}.workspace-floating-input::placeholder{color:#a1a1aa}.workspace-floating-send{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;border:none;background:#e4e4e7;color:#a1a1aa;cursor:pointer;transition:all .2s ease;flex-shrink:0}.workspace-floating-send.active{background:#18181b;color:white;box-shadow:0 4px 12px rgba(0,0,0,.15)}.workspace-floating-send.active:hover{background:#3f3f46;transform:scale(1.05)}.workspace-floating-send.active:active{transform:scale(.95)}.workspace-floating-send:disabled{cursor:not-allowed}.workspace-floating-disclaimer{text-align:center;margin-top:12px}.workspace-floating-disclaimer span{font-size:10px;color:#a1a1aa;font-weight:500}.workspace-panel-hero{display:none;gap:20px;padding:28px;background:var(--bg-secondary);border-radius:var(--radius-lg);border:1px solid var(--border-color);margin-bottom:32px;box-shadow:var(--shadow-subtle)}.workspace-panel-hero-icon{display:flex;align-items:center;justify-content:center;width:56px;height:56px;border-radius:var(--radius-md);background:linear-gradient(135deg,var(--accent-blue) 0,#5856D6 100%);color:white;flex-shrink:0}.workspace-panel-hero-info{flex:1;min-width:0}.workspace-panel-hero-title{font-size:20px;font-weight:700;color:var(--text-primary);margin-bottom:6px;letter-spacing:-.02em;line-height:1.3}.workspace-panel-hero-meta{font-size:13px;font-weight:500;color:var(--accent-blue);text-transform:uppercase;letter-spacing:.04em;margin-bottom:8px}.workspace-panel-hero-preview{font-size:13px;color:var(--text-tertiary);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.workspace-panel-markdown{background:var(--bg-secondary);border-radius:var(--radius-lg);border:1px solid var(--border-color);padding:32px;box-shadow:var(--shadow-subtle)}.workspace-panel-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:80px 24px;text-align:center}.workspace-panel-empty-icon{color:var(--text-tertiary);opacity:.2;margin-bottom:20px}.workspace-panel-empty-title{font-size:16px;font-weight:600;color:var(--text-secondary);margin-bottom:6px}.workspace-panel-empty-desc{font-size:13px;color:var(--text-tertiary)}.workspace-back-btn{display:flex;align-items:center;gap:6px;border:none;background:none;font-size:13px;font-weight:500;color:#71717a;cursor:pointer;padding:6px 12px;border-radius:8px;transition:all .2s ease}.workspace-back-btn:hover{color:#18181b;background:rgba(0,0,0,.04)}.workspace-chat-inline{padding:0 32px 120px;max-width:52rem;margin:0 auto;width:100%}.workspace-chat-inline-divider{display:flex;align-items:center;gap:16px;margin:32px 0 24px}.workspace-chat-inline-divider:after,.workspace-chat-inline-divider:before{content:"";flex:1;height:1px;background:rgba(0,0,0,.06)}.workspace-chat-inline-divider span{font-size:11px;font-weight:600;color:#94a3b8;text-transform:uppercase;letter-spacing:.08em}.workspace-chat-inline .workspace-chat-messages{padding:0}.workspace-chat-view{display:flex;flex-direction:column;height:100%}.workspace-chat-messages{flex:1;overflow-y:auto;padding:24px 32px;max-width:52rem;margin:0 auto;width:100%}.workspace-chat-msg{display:flex;gap:14px;margin-bottom:28px;animation:chatFadeIn .3s ease}@keyframes chatFadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.workspace-chat-msg.user{flex-direction:row-reverse}.workspace-chat-msg.user .workspace-chat-msg-body{display:flex;justify-content:flex-end}.workspace-chat-msg.user .workspace-chat-msg-content{background:#18181b;color:#fafafa;padding:12px 18px;border-radius:20px 20px 4px 20px;max-width:520px}.workspace-chat-msg.user .workspace-chat-msg-content p{font-size:14.5px;line-height:1.55;margin:0}.workspace-chat-msg-avatar{display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:8px;flex-shrink:0;margin-top:2px;overflow:hidden;box-shadow:0 1px 4px rgba(0,0,0,.1)}.workspace-chat-msg-avatar-img{width:100%;height:100%;-o-object-fit:cover;object-fit:cover;border-radius:8px}.workspace-chat-msg.assistant .workspace-chat-msg-body{flex:1;min-width:0}.workspace-chat-msg.assistant .workspace-chat-msg-content{max-width:100%}.workspace-chat-msg.assistant .workspace-chat-msg-content p{font-size:14.5px;line-height:1.65;color:#3f3f46;margin:0 0 8px}.workspace-chat-msg.assistant .workspace-chat-msg-content p:last-child{margin-bottom:0}.workspace-chat-typing{display:flex;gap:5px;padding:8px 4px}.workspace-chat-typing span{display:block;width:7px;height:7px;border-radius:50%;background:#a1a1aa;animation:typingDot 1.4s ease-in-out infinite}.workspace-chat-typing span:nth-child(2){animation-delay:.2s}.workspace-chat-typing span:nth-child(3){animation-delay:.4s}@keyframes typingDot{0%,60%,to{opacity:.3;transform:scale(.8)}30%{opacity:1;transform:scale(1)}}.workspace-spin{animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}.workspace-view-loading{justify-content:center;gap:12px;padding:80px 24px;color:var(--text-tertiary);font-size:14px}.workspace-video-ready,.workspace-view-loading{display:flex;flex-direction:column;align-items:center}.workspace-video-ready{padding:32px;gap:0}.workspace-video-player-card{width:100%;max-width:720px;border-radius:16px;overflow:hidden;border:1px solid rgba(0,0,0,.06);box-shadow:0 2px 8px rgba(0,0,0,.04),0 8px 32px rgba(0,0,0,.06);background:#000}.workspace-video-element{width:100%;max-height:70vh;display:block;background:#000}.workspace-video-info-bar{display:flex;align-items:center;justify-content:space-between;width:100%;max-width:720px;padding:20px 4px 0;gap:16px}.workspace-video-info-left{flex:1;min-width:0}.workspace-video-ready-badge{display:inline-flex;align-items:center;gap:4px;font-size:11px;font-weight:600;color:#34C759;background:rgba(52,199,89,.12);border:1px solid rgba(52,199,89,.2);padding:2px 10px;border-radius:9999px;margin-bottom:8px}.workspace-video-title{font-size:17px;font-weight:600;color:var(--text-primary);margin:0;letter-spacing:-.01em}.workspace-video-meta{font-size:13px;color:var(--text-tertiary);margin:4px 0 0}.workspace-video-download-btn{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;background:white;border:1px solid rgba(0,0,0,.08);border-radius:12px;font-size:13px;font-weight:500;color:var(--text-primary);text-decoration:none;cursor:pointer;transition:all .2s ease;box-shadow:0 1px 3px rgba(0,0,0,.04);flex-shrink:0}.workspace-video-download-btn:hover{border-color:rgba(0,0,0,.12);box-shadow:0 4px 12px rgba(0,0,0,.06)}.workspace-video-actions{display:flex;align-items:center;gap:8px}.workspace-video-publish-btn{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;background:white;border:1px solid rgba(0,0,0,.08);border-radius:12px;font-size:13px;font-weight:500;color:var(--text-primary);cursor:pointer;transition:all .2s ease;box-shadow:0 1px 3px rgba(0,0,0,.04);flex-shrink:0}.workspace-video-publish-btn:hover{border-color:rgba(0,0,0,.12);box-shadow:0 4px 12px rgba(0,0,0,.06)}.workspace-video-publish-btn[data-published=true]{background:rgba(34,197,94,.1);border-color:rgba(34,197,94,.3);color:#22C55E}.workspace-quiz-view{padding:24px;max-width:720px;margin:0 auto}.workspace-quiz-header{margin-bottom:24px}.workspace-quiz-header h2{font-size:20px;font-weight:700;color:var(--text-primary);margin:0 0 4px}.workspace-quiz-meta{font-size:13px;color:var(--text-tertiary)}.workspace-quiz-question{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:20px;margin-bottom:16px}.workspace-quiz-question-num{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--text-tertiary);margin-bottom:8px}.workspace-quiz-question-text{font-size:15px;font-weight:600;color:var(--text-primary);margin-bottom:16px;line-height:1.5}.workspace-quiz-options{display:flex;flex-direction:column;gap:8px}.workspace-quiz-option{display:flex;align-items:center;gap:12px;padding:12px 16px;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-md);cursor:pointer;transition:all .15s ease;font-size:14px;color:var(--text-primary);text-align:left;width:100%}.workspace-quiz-option:hover:not(:disabled){border-color:var(--text-tertiary);background:var(--bg-tertiary)}.workspace-quiz-option.selected{border-color:#06B6D4;background:rgba(6,182,212,.08)}.workspace-quiz-option.correct{border-color:#10b981;background:rgba(16,185,129,.08)}.workspace-quiz-option.incorrect{border-color:#ef4444;background:rgba(239,68,68,.08)}.workspace-quiz-option-letter{width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;background:var(--bg-tertiary);color:var(--text-secondary);flex-shrink:0}.workspace-quiz-option.selected .workspace-quiz-option-letter{background:#06B6D4;color:white}.workspace-quiz-option.correct .workspace-quiz-option-letter{background:#10b981;color:white}.workspace-quiz-option.incorrect .workspace-quiz-option-letter{background:#ef4444;color:white}.workspace-quiz-explanation{margin-top:12px;padding:12px 16px;background:rgba(6,182,212,.06);border-left:3px solid #06b6d4;border-radius:0 var(--radius-md) var(--radius-md) 0;font-size:13px;color:var(--text-secondary);line-height:1.5}.workspace-quiz-actions{display:flex;justify-content:center;gap:12px;margin-top:24px}.workspace-quiz-submit{padding:12px 32px;background:#06B6D4;color:white;border:none;border-radius:var(--radius-md);font-size:14px;font-weight:600;cursor:pointer;transition:opacity .2s}.workspace-quiz-submit:hover{opacity:.9}.workspace-quiz-submit:disabled{opacity:.5;cursor:not-allowed}.workspace-quiz-results{text-align:center;padding:24px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);margin-bottom:24px}.workspace-quiz-score{font-size:48px;font-weight:800;color:var(--text-primary);margin-bottom:4px}.workspace-quiz-score-label{font-size:13px;color:var(--text-tertiary)}.workspace-quiz-retake{padding:10px 24px;background:transparent;border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);font-size:13px;font-weight:600;cursor:pointer;transition:all .15s}.workspace-quiz-retake:hover{background:var(--bg-tertiary)}.workspace-flashcards-view{display:flex;flex-direction:column;align-items:center;padding:24px;max-width:600px;margin:0 auto;width:100%}.workspace-fc-header{display:flex;align-items:center;justify-content:space-between;width:100%;margin-bottom:16px}.workspace-fc-header h2{font-size:18px;font-weight:700;color:var(--text-primary);margin:0}.workspace-fc-counter{font-size:13px;color:var(--text-tertiary);font-weight:600}.workspace-fc-progress-bar{width:100%;height:4px;background:var(--bg-tertiary);border-radius:2px;margin-bottom:32px;overflow:hidden}.workspace-fc-progress-fill{height:100%;background:linear-gradient(90deg,#8B5CF6,#A78BFA);border-radius:2px;transition:width .3s ease}.workspace-fc-card-container{width:100%;perspective:1000px;cursor:pointer;margin-bottom:32px}.workspace-fc-card{position:relative;width:100%;min-height:280px;transition:transform .5s ease;transform-style:preserve-3d}.workspace-fc-card.flipped{transform:rotateY(180deg)}.workspace-fc-face{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:32px;border-radius:var(--radius-lg);backface-visibility:hidden;border:1px solid var(--border-color)}.workspace-fc-front{background:var(--bg-secondary)}.workspace-fc-back{background:linear-gradient(135deg,rgba(139,92,246,.08),rgba(167,139,250,.04));border-color:rgba(139,92,246,.3);transform:rotateY(180deg)}.workspace-fc-label{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--text-tertiary);margin-bottom:16px}.workspace-fc-text{font-size:18px;font-weight:600;color:var(--text-primary);text-align:center;line-height:1.5;margin:0}.workspace-fc-hint{margin-top:24px;font-size:12px;color:var(--text-tertiary)}.workspace-fc-controls{display:flex;align-items:center;gap:16px}.workspace-fc-nav-btn{width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--bg-secondary);border:1px solid var(--border-color);color:var(--text-primary);cursor:pointer;transition:all .15s}.workspace-fc-nav-btn:hover:not(:disabled){background:var(--bg-tertiary)}.workspace-fc-nav-btn:disabled{opacity:.3;cursor:not-allowed}.workspace-fc-nav-btn.restart{background:transparent;border-color:transparent;color:var(--text-tertiary)}.workspace-fc-nav-btn.restart:hover{color:var(--text-primary)}.workspace-fc-complete{margin-top:20px;font-size:13px;color:var(--text-tertiary);text-align:center}.workspace-infographic-view{padding:24px;display:flex;flex-direction:column;align-items:center}.workspace-infographic-image{max-width:100%;border-radius:var(--radius-lg);border:1px solid var(--border-color)}.studio-panel{display:flex;flex-direction:column;height:100%;background:white;padding-top:24px;padding-bottom:16px}.studio-panel-header{display:flex;align-items:center;justify-content:space-between;padding:0 24px;margin-bottom:12px}.studio-panel-title{font-size:20px;font-weight:600;color:#0f172a;letter-spacing:-.025em}.studio-panel-badge{display:flex;align-items:center;justify-content:center;width:32px;height:32px;background:rgba(0,122,255,.1);color:#007AFF;border-radius:50%;font-size:0}.studio-panel-badge span{display:none}.studio-panel-section-label{font-size:11px;font-weight:600;color:var(--text-tertiary);letter-spacing:.06em;text-transform:uppercase;padding:0 24px;margin-bottom:12px}.studio-panel-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:0 24px;margin-bottom:16px}.studio-panel-action-card{display:flex;flex-direction:column;align-items:flex-start;padding:12px 14px;background:#f5f5f7;border:none;border-radius:16px;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);text-align:left}.studio-panel-action-card:hover:not(:disabled){background:#ededf0}.studio-panel-action-card:active:not(:disabled){transform:translateY(0)}.studio-panel-action-card:disabled{opacity:.5;filter:grayscale(1);cursor:not-allowed}.studio-panel-action-top{display:flex;align-items:center;gap:8px;margin-bottom:2px}.studio-panel-action-icon{display:flex;align-items:center;justify-content:center;color:var(--text-secondary);transition:color .3s cubic-bezier(.4,0,.2,1)}.studio-panel-action-icon svg{width:20px;height:20px;stroke-width:1.5}.studio-panel-action-card:hover .studio-panel-action-icon{color:var(--text-primary)}.studio-panel-action-card.disabled-muted .studio-panel-action-icon{color:#a1a1aa}.studio-panel-action-label{font-size:14px;font-weight:600;letter-spacing:-.01em;color:var(--text-primary);line-height:1.3}.studio-panel-action-text{display:flex;flex-direction:column;min-width:0}.studio-panel-action-desc{font-size:11px;color:var(--text-tertiary);font-weight:400;margin-top:1px;line-height:1.3}.studio-flashcard-stack-icon{display:flex;align-items:center;justify-content:center;position:relative;width:22px;height:18px}.studio-flashcard-mini{width:12px;height:16px;background:rgba(59,130,246,.1);border-radius:2px;border:1.5px solid rgba(59,130,246,.25);position:absolute}.studio-flashcard-mini:first-child{transform:rotate(-6deg);z-index:3;left:0}.studio-flashcard-mini:nth-child(2){transform:rotate(0deg);z-index:2;left:4px}.studio-flashcard-mini:nth-child(3){transform:rotate(6deg);z-index:1;left:8px}.studio-panel-action-usage{display:flex;align-items:center;gap:8px;margin-top:2px;width:100%}.studio-panel-action-usage span{font-size:10px;font-weight:500;color:#b0b8c4;font-variant-numeric:tabular-nums;white-space:nowrap}.studio-panel-action-usage-track{flex:1;height:2px;background:rgba(0,0,0,.04);border-radius:1px;overflow:hidden}.studio-panel-action-usage-fill{height:100%;border-radius:1px;background:#cbd5e1;transition:width .4s ease}.studio-panel-divider{height:0;margin-bottom:0}.studio-panel-extractions{flex:1;min-height:0;display:flex;flex-direction:column;overflow-y:auto;padding:0 24px;background:white;border-top:1px solid var(--border-light)}.studio-panel-extractions-header{display:flex;align-items:center;justify-content:space-between;padding-top:20px;margin-bottom:16px}.studio-panel-extractions-header h3{font-size:11px;font-weight:600;color:var(--text-tertiary);letter-spacing:.06em;text-transform:uppercase}.studio-panel-extractions-count{font-size:11px;font-weight:500;color:var(--text-tertiary)}.studio-panel-extractions-list{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:4px}.studio-panel-extraction-item{display:flex;align-items:center;gap:14px;width:100%;padding:12px 8px;border:none;background:transparent;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);text-align:left}.studio-panel-extraction-item:hover{background:var(--bg-tertiary)}.studio-panel-extraction-item:hover .studio-panel-extraction-title{color:var(--text-primary)}.studio-panel-extraction-dot{display:none}.studio-panel-extraction-icon{display:flex;align-items:center;justify-content:center;width:44px;height:44px;min-width:44px;border-radius:50%;background:#f5f5f7;color:var(--text-secondary);flex-shrink:0;transition:all var(--transition-fast)}.studio-panel-extraction-info{flex:1;min-width:0}.studio-panel-extraction-title{display:block;font-size:14px;font-weight:600;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:1.3;letter-spacing:-.01em;transition:color var(--transition-fast)}.studio-panel-extraction-meta{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--text-tertiary);margin-top:3px}.studio-panel-extraction-status{flex-shrink:0;margin-left:auto}.studio-panel-extraction-complete{font-size:12px;font-weight:500;color:#007AFF}.studio-panel-extraction-progress{width:48px;height:4px;background:var(--bg-tertiary);border-radius:2px;overflow:hidden}.studio-panel-extraction-progress-bar{width:60%;height:100%;background:var(--accent-blue);border-radius:2px;animation:progressPulse 1.5s ease-in-out infinite}@keyframes progressPulse{0%,to{opacity:.6}50%{opacity:1}}.studio-panel-extraction-failed{font-size:11px;font-weight:600;color:var(--accent-red)}.studio-panel-extraction-arrow{display:none}.studio-panel-extractions-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 20px;text-align:center;color:var(--text-tertiary)}.studio-panel-extractions-empty svg{opacity:.3;margin-bottom:12px}.studio-panel-extractions-empty p{font-size:14px;font-weight:600;color:var(--text-secondary);margin-bottom:4px}.studio-panel-extractions-empty span{font-size:12px}@media (max-width:1200px){.project-panels{grid-template-columns:260px 1fr 300px}}@media (max-width:768px){.project-mobile-tabs{display:flex;gap:0;background:var(--bg-secondary);border-bottom:1px solid var(--border-color);padding:0}.project-mobile-tab{flex:1;padding:12px 0;background:none;font-size:13px;font-weight:600;color:var(--text-tertiary);cursor:pointer;border:none;border-bottom:2px solid transparent;transition:all var(--transition-fast)}.project-mobile-tab.active{color:var(--accent-blue);border-bottom-color:var(--accent-blue)}.project-panels{display:flex;flex:1;min-height:0;overflow:hidden}.project-panel-sources,.project-panel-studio,.project-panel-workspace{display:none;width:100%;border:none}.project-panel-sources.mobile-active,.project-panel-studio.mobile-active,.project-panel-workspace.mobile-active{display:flex;flex-direction:column}.project-breadcrumb-app-name{display:none}.project-breadcrumb-project-name{max-width:180px;font-size:13px}.workspace-panel-workspace{padding:20px 16px}.workspace-panel-hero{flex-direction:column;padding:20px;gap:16px}.workspace-panel-hero-icon{width:48px;height:48px}.workspace-panel-hero-title{font-size:18px}.workspace-panel-markdown{padding:20px}.studio-panel-actions{gap:8px}.studio-panel-action-card{padding:10px}}.projects-page{max-width:1200px;margin:0 auto;padding:48px 40px 80px}.projects-page-header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:40px}.projects-page-title{font-size:32px;font-weight:600;color:var(--text-primary);letter-spacing:-.04em;line-height:1.1;margin-bottom:8px}.projects-page-subtitle{font-size:15px;color:var(--text-secondary);line-height:1.5}.projects-page-create-btn{display:flex;align-items:center;gap:8px;padding:14px 24px;background:var(--text-primary);color:white;border:none;border-radius:var(--radius-xl);font-size:15px;font-weight:600;cursor:pointer;transition:all var(--transition-smooth);box-shadow:0 2px 8px rgba(0,0,0,.12);flex-shrink:0}.projects-page-create-btn:hover{background:#000000;transform:translateY(-1px);box-shadow:0 4px 16px rgba(0,0,0,.18)}.projects-page-create-btn:active{transform:translateY(0)}.projects-page-toolbar{display:flex;align-items:center;gap:16px;margin-bottom:32px}.projects-page-search{flex:1;display:flex;align-items:center;gap:12px;padding:14px 20px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);transition:all var(--transition-fast);box-shadow:var(--shadow-subtle)}.projects-page-search:focus-within{border-color:var(--accent-blue);box-shadow:0 0 0 3px rgba(0,113,227,.08)}.projects-page-search-icon{color:var(--text-tertiary);flex-shrink:0}.projects-page-search-input{flex:1;border:none;background:none;font-size:15px;color:var(--text-primary);outline:none}.projects-page-search-input::-moz-placeholder{color:var(--text-tertiary)}.projects-page-search-input::placeholder{color:var(--text-tertiary)}.projects-page-view-toggle{display:flex;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-subtle)}.projects-page-view-btn{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border:none;background:none;color:var(--text-tertiary);cursor:pointer;transition:all var(--transition-fast)}.projects-page-view-btn:first-child{border-right:1px solid var(--border-color)}.projects-page-view-btn.active{background:var(--text-primary);color:white}.projects-page-view-btn:hover:not(.active){background:var(--bg-tertiary);color:var(--text-secondary)}.projects-page-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.projects-card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:24px;cursor:pointer;transition:all var(--transition-smooth);position:relative;display:flex;flex-direction:column;min-height:180px}.projects-card:hover{border-color:var(--border-light);box-shadow:var(--shadow-card);transform:translateY(-2px)}.projects-card-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.projects-card-status{display:inline-flex;align-items:center;padding:4px 10px;border-radius:var(--radius-lg);font-size:11px;font-weight:700;letter-spacing:.04em}.projects-card-menu{display:flex;align-items:center;justify-content:center;width:28px;height:28px;border:none;background:none;border-radius:var(--radius-sm);color:var(--text-tertiary);cursor:pointer;opacity:0;transition:all var(--transition-fast)}.projects-card:hover .projects-card-menu{opacity:1}.projects-card-menu:hover{background:var(--bg-tertiary);color:var(--text-primary)}.projects-card-dropdown{position:absolute;top:52px;right:16px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);min-width:160px;z-index:20;overflow:hidden}.projects-card-dropdown-item{display:flex;align-items:center;gap:10px;width:100%;padding:10px 14px;border:none;background:none;font-size:13px;color:var(--text-primary);cursor:pointer;transition:background var(--transition-fast);text-align:left}.projects-card-dropdown-item:hover{background:var(--bg-tertiary)}.projects-card-dropdown-item.delete{color:var(--accent-red)}.projects-card-dropdown-divider{height:1px;background:var(--border-color)}.projects-card-body{flex:1;display:flex;flex-direction:column;justify-content:flex-end}.projects-card-title{font-size:18px;font-weight:700;color:var(--text-primary);letter-spacing:-.02em;line-height:1.3;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.projects-card-date{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text-tertiary);font-weight:500;letter-spacing:.02em}.projects-card-tags{display:flex;gap:6px;margin-top:14px;padding-top:14px;border-top:1px solid var(--border-color);flex-wrap:wrap}.projects-card-tag{padding:3px 10px;background:var(--bg-tertiary);border-radius:var(--radius-lg);font-size:11px;font-weight:500;color:var(--text-secondary)}.projects-page-list{display:flex;flex-direction:column;gap:4px}.projects-list-item{display:flex;align-items:center;gap:16px;padding:16px 20px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast)}.projects-list-item:hover{border-color:var(--border-light);box-shadow:var(--shadow-sm)}.projects-list-item-icon{display:flex;align-items:center;justify-content:center;width:40px;height:40px;background:var(--bg-tertiary);border-radius:var(--radius-sm);color:var(--text-secondary);flex-shrink:0}.projects-list-item-info{flex:1;min-width:0}.projects-list-item-title{font-size:15px;font-weight:600;color:var(--text-primary);margin-bottom:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.projects-list-item-meta{display:flex;align-items:center;gap:10px;margin-top:2px}.projects-list-item-date{font-size:12px;color:var(--text-tertiary);letter-spacing:.02em}.projects-list-item-arrow{color:var(--text-tertiary);opacity:0;transition:opacity var(--transition-fast);flex-shrink:0}.projects-list-item:hover .projects-list-item-arrow{opacity:1}.projects-page-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:80px 32px}.projects-page-empty-icon{color:var(--text-tertiary);opacity:.2;margin-bottom:24px}.projects-page-empty h3{font-size:18px;font-weight:700;color:var(--text-primary);margin-bottom:8px;letter-spacing:-.02em}.projects-page-empty p{font-size:14px;color:var(--text-secondary);margin-bottom:24px}.projects-page-empty-btn{display:flex;align-items:center;gap:8px;padding:12px 24px;background:var(--text-primary);color:white;border:none;border-radius:var(--radius-xl);font-size:14px;font-weight:600;cursor:pointer;transition:all var(--transition-smooth)}.projects-page-empty-btn:hover{background:#000000;transform:translateY(-1px);box-shadow:0 4px 12px rgba(0,0,0,.15)}.pagination-controls{display:flex;align-items:center;justify-content:center;gap:16px;margin-top:40px;padding:16px 0}.pagination-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:9999px;border:1px solid var(--border-light);background:var(--bg-secondary);color:var(--text-primary);font-size:14px;font-weight:500;cursor:pointer;transition:all var(--transition-fast)}.pagination-btn:hover:not(:disabled){background:var(--bg-tertiary)}.pagination-btn:disabled{opacity:.4;cursor:not-allowed}.pagination-btn svg{width:16px;height:16px}.pagination-info{font-size:14px;color:var(--text-secondary);font-weight:500}@media (max-width:1024px){.projects-page-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:768px){.projects-page{padding:24px 16px 60px}.projects-page-header{flex-direction:column;gap:16px;margin-bottom:28px}.projects-page-title{font-size:28px}.projects-page-create-btn{width:100%;justify-content:center}.projects-page-toolbar{flex-direction:column;gap:12px}.projects-page-view-toggle{align-self:flex-end}.projects-page-grid{grid-template-columns:1fr}.projects-card{min-height:140px}}