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h3{font-size:14px;font-weight:600;color:var(--text-primary);margin:0 0 4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.recent-course-info p{font-size:12px;color:var(--text-muted);margin:0}.dashboard-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;height:60vh;gap:16px;color:var(--text-secondary)}.courses-toolbar{margin-bottom:20px}.search-box{display:flex;align-items:center;gap:12px;max-width:400px;padding:12px 16px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md)}.search-box:focus-within{border-color:var(--primary-green)}.search-icon{font-size:16px;color:var(--text-muted)}.search-input{flex:1;background:transparent;border:none;outline:none;color:var(--text-primary);font-size:14px}.search-input::placeholder{color:var(--text-muted)}.no-results{grid-column:1 / -1;text-align:center;padding:60px 20px;color:var(--text-secondary)}.no-results-icon{font-size:48px;margin-bottom:16px}.no-results h3{font-size:18px;font-weight:600;color:var(--text-primary);margin:0 0 8px}.no-results p{font-size:14px;color:var(--text-muted);margin:0}.dashboard-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:32px}.header-content{flex:1}.btn-large{padding:12px 24px;font-size:15px}.category-selector{margin-bottom:32px}.category-tabs{display:flex;gap:8px;padding:8px;background:var(--bg-card);border-radius:var(--radius-lg);overflow-x:auto;scrollbar-width:none}.category-tabs::-webkit-scrollbar{display:none}.category-tab{display:flex;align-items:center;gap:8px;padding:12px 20px;font-size:14px;font-weight:500;color:var(--text-secondary);background:transparent;border:none;border-radius:var(--radius-md);cursor:pointer;white-space:nowrap;transition:all var(--transition-fast)}.category-tab:hover{background:var(--bg-card-hover);color:var(--text-primary)}.category-tab.active{background:var(--primary-green);color:var(--bg-dark)}.category-tab-icon{font-size:16px}.category-tab-count{padding:2px 8px;font-size:12px;background:#ffffff1a;border-radius:10px}.category-tab.active .category-tab-count{background:#0003}.category-pills{display:flex;flex-wrap:wrap;gap:12px}.category-pill{display:flex;align-items:center;gap:10px;padding:14px 24px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast)}.category-pill:hover{border-color:var(--border-hover);transform:translateY(-2px)}.category-pill.active{border-color:var(--primary-green);background:#9fef000d}.category-pill-icon{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-md);font-size:18px}.category-pill.active 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var(--border-color);border-radius:var(--radius-lg);min-height:300px;display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition-fast)}.add-course-card:hover{border-color:var(--primary-green);background:#9fef0005}.add-course-icon{width:60px;height:60px;display:flex;align-items:center;justify-content:center;font-size:32px;background:var(--bg-card);border-radius:50%;margin-bottom:16px;color:var(--primary-green)}.add-course-text{font-size:16px;font-weight:500;color:var(--text-secondary)}.course-card-skeleton{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);overflow:hidden}.skeleton-image{height:160px;background:linear-gradient(90deg,var(--bg-darker) 25%,var(--bg-card-hover) 50%,var(--bg-darker) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite}.skeleton-content{padding:20px}.skeleton-line{height:16px;background:var(--bg-darker);border-radius:4px;margin-bottom:12px}.skeleton-line.short{width:60%}.skeleton-line.medium{width:80%}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}@media (max-width: 768px){.courses-grid{grid-template-columns:1fr;gap:16px}.course-card-image{height:140px}.course-card-content{padding:16px}}.notes-container{display:flex;gap:24px;height:calc(100vh - 140px)}.folder-sidebar{width:280px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);display:flex;flex-direction:column;flex-shrink:0}.folder-sidebar-header{padding:16px;border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between}.folder-sidebar-title{font-size:14px;font-weight:600;color:var(--text-primary)}.folder-sidebar-actions{display:flex;gap:8px}.folder-action-btn{width:32px;height:32px;background:var(--bg-input);border:1px 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var(--transition-fast)}.notes-breadcrumb-item:hover{color:var(--primary-green)}.notes-breadcrumb-separator{color:var(--text-muted)}.notes-breadcrumb-current{color:var(--text-primary);font-weight:500}.notes-search{position:relative;width:300px}.notes-search-input{width:100%;padding:10px 16px 10px 40px;background:var(--bg-input);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);font-size:14px}.notes-search-input:focus{outline:none;border-color:var(--primary-green)}.notes-search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--text-muted)}.notes-header-actions{display:flex;gap:12px}.notes-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.note-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:20px;cursor:pointer;transition:all var(--transition-fast)}.note-card:hover{border-color:var(--border-hover);transform:translateY(-2px)}.note-card.pinned{border-color:var(--primary-green);background:#9fef0005}.note-card-header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:12px}.note-card-title{font-size:16px;font-weight:600;color:var(--text-primary);display:flex;align-items:center;gap:8px}.note-pin-icon{color:var(--primary-green);font-size:14px}.note-card-menu-container{position:relative}.note-card-menu{width:28px;height:28px;background:transparent;border:none;border-radius:var(--radius-sm);color:var(--text-muted);cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;transition:all var(--transition-fast);font-size:16px}.note-card:hover .note-card-menu{opacity:1}.note-card-menu:hover{background:var(--bg-darker);color:var(--text-primary)}.note-card-dropdown{position:absolute;top:100%;right:0;margin-top:4px;min-width:150px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);overflow:hidden;z-index:100;animation:fadeInDown .15s ease}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.dropdown-item{display:flex;align-items:center;gap:10px;width:100%;padding:12px 16px;background:none;border:none;text-align:left;font-size:14px;color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast)}.dropdown-item:hover{background:var(--bg-darker);color:var(--text-primary)}.dropdown-item-danger:hover{background:#e74c3c1a;color:var(--danger)}.dropdown-icon{font-size:14px}.note-card-preview{font-size:14px;color:var(--text-secondary);line-height:1.5;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px}.note-card-footer{display:flex;align-items:center;justify-content:space-between;padding-top:12px;border-top:1px solid 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#9fef001a}.input::placeholder,.textarea::placeholder{color:var(--text-muted)}.card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);overflow:hidden;transition:all var(--transition-normal)}.card:hover{border-color:var(--border-hover);transform:translateY(-2px);box-shadow:var(--shadow-lg)}.badge{display:inline-flex;align-items:center;padding:4px 10px;font-size:12px;font-weight:500;border-radius:20px}.badge-easy{background:#2ecc7126;color:var(--easy-color)}.badge-medium{background:#f39c1226;color:var(--medium-color)}.badge-hard{background:#e74c3c26;color:var(--hard-color)}.badge-insane{background:#9b59b626;color:var(--insane-color)}.progress-bar{width:100%;height:6px;background:var(--bg-darker);border-radius:3px;overflow:hidden}.progress-bar-fill{height:100%;background:linear-gradient(90deg,var(--primary-green),var(--primary-cyan));border-radius:3px;transition:width 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