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p{color:var(--color-medium-gray)}.dashboard-stats{grid-gap:var(--spacing-lg);display:grid;gap:var(--spacing-lg);grid-template-columns:repeat(auto-fit,minmax(200px,1fr));margin-bottom:var(--spacing-2xl)}.stat-card{background-color:var(--color-dark-gray);border:1px solid var(--color-medium-gray);border-left:4px solid var(--color-accent);border-radius:var(--border-radius-md);text-align:center}.stat-card h3{color:var(--color-medium-gray);font-size:var(--font-size-sm);margin-bottom:var(--spacing-md);text-transform:uppercase}.stat-number{font-size:var(--font-size-3xl);font-weight:var(--font-weight-bold)}.course-header{background:linear-gradient(135deg,#333,#1a1a1a);border-left:4px solid var(--color-accent);border-radius:var(--border-radius-lg);margin-bottom:var(--spacing-2xl);padding:var(--spacing-2xl)}.course-header h1{margin-bottom:var(--spacing-md)}.course-meta{gap:var(--spacing-lg);margin-top:var(--spacing-lg)}.course-meta-item{align-items:center;display:flex;font-size:var(--font-size-sm);gap:var(--spacing-sm)}.course-content{grid-gap:var(--spacing-lg);display:grid;gap:var(--spacing-lg);grid-template-columns:1fr 300px}.course-main{display:flex;flex-direction:column;gap:var(--spacing-lg)}.manage-labs-page{animation:slideInFromLeft .6s ease-out;background:var(--color-bg);min-height:calc(100vh - 70px);padding:var(--spacing-2xl) var(--spacing-lg)}.manage-labs-container{margin:0 auto;max-width:1400px}.manage-labs-header{align-items:center;animation:slideInFromLeft .6s ease-out .1s backwards;border-bottom:1px solid #e0e0e0;display:flex;gap:var(--spacing-lg);margin-bottom:var(--spacing-2xl);padding-bottom:var(--spacing-xl)}.manage-labs-back-btn{align-items:center;background:none;border:none;border-radius:4px;color:var(--color-text);cursor:pointer;display:flex;font-size:1.5rem;justify-content:center;padding:var(--spacing-sm);transition:all var(--transition)}.manage-labs-back-btn:hover{background-color:var(--color-hover);transform:translateX(-2px)}.manage-labs-title-section h1{color:var(--color-text);font-size:2.5rem;font-weight:700;letter-spacing:-1px;margin:0 0 .25rem}.manage-labs-title-section p{color:#666;font-size:1rem;margin:0}.manage-labs-controls{align-items:center;animation:slideInFromLeft .6s ease-out .2s backwards;display:flex;flex-wrap:wrap;gap:var(--spacing-lg);justify-content:space-between;margin-bottom:var(--spacing-2xl)}.week-navigation{align-items:center;background:#0000;border:none;border-radius:8px;display:flex;gap:var(--spacing-md);padding:var(--spacing-md) 0}.week-nav-btn{background:var(--color-text);border:none;border-radius:4px;color:#fff;cursor:pointer;font-size:1rem;font-weight:700;padding:.75rem 1rem;transition:all var(--transition)}.week-nav-btn:disabled{background:#e8e8e8;color:#999;cursor:not-allowed}.week-nav-btn:not(:disabled):hover{opacity:.8;transform:translateY(-2px)}.week-display{align-items:center;display:flex;gap:var(--spacing-md);justify-content:center;min-width:180px}.week-number{color:var(--color-text);font-size:1.5rem;font-weight:700}.week-labs-count{color:#666;font-size:.9rem;font-weight:500}.add-lab-btn{background:var(--color-accent);border:none;border-radius:4px;color:#fff;cursor:pointer;font-size:1rem;font-weight:700;padding:.75rem 1.75rem;transition:all var(--transition)}.add-lab-btn:hover{background:var(--color-text);border-color:var(--color-text);box-shadow:0 4px 12px #00000026;transform:translateY(-2px)}.lab-form-section{animation:slideInFromTop .4s ease-out;background:var(--color-hover);border:1px solid #e0e0e0;border-radius:8px;margin-bottom:var(--spacing-2xl);padding:var(--spacing-lg)}.lab-form-section h2{color:var(--color-text);font-size:1.25rem;font-weight:700;margin-bottom:var(--spacing-lg)}.lab-form-grid{grid-gap:var(--spacing-lg);display:grid;gap:var(--spacing-lg);grid-template-columns:1fr 1fr;margin-bottom:var(--spacing-lg)}.lab-form-group{display:flex;flex-direction:column;gap:var(--spacing-sm)}.lab-form-group label{color:var(--color-text);display:block;font-size:.95rem;font-weight:600}.lab-form-group input,.lab-form-group select{background:#fff;border:1px solid #d0d0d0;border-radius:4px;color:var(--color-text);font-family:inherit;font-size:1rem;padding:.875rem 1rem;transition:all var(--transition)}.lab-form-group input:focus,.lab-form-group select:focus{border-color:var(--color-accent);box-shadow:0 0 0 3px #7a51071a;outline:none}.lab-form-full{grid-column:1/-1}.lab-form-buttons{display:flex;gap:var(--spacing-md)}.lab-form-buttons button{border:none;border-radius:4px;cursor:pointer;font-size:1rem;font-weight:700;padding:.875rem 1.75rem;transition:all var(--transition)}.lab-form-submit{background:var(--color-text);color:#fff;flex:1 1}.lab-form-submit:hover{background:var(--color-accent);box-shadow:0 4px 12px #00000026;transform:translateY(-2px)}.lab-form-cancel{background:#e8e8e8;color:var(--color-text)}.lab-form-cancel:hover{background:#d8d8d8}.labs-filter-section{align-items:center;animation:slideInFromLeft .6s ease-out .3s backwards;display:flex;gap:var(--spacing-md);margin-bottom:var(--spacing-lg)}.labs-filter-label{color:var(--color-text);font-size:.95rem;font-weight:600}.labs-filter-dropdown{background:#fff;border:1px solid #d0d0d0;border-radius:4px;color:var(--color-text);cursor:pointer;font-family:inherit;font-size:.95rem;font-weight:500;padding:.75rem 1rem;transition:all var(--transition)}.labs-filter-dropdown:hover{border-color:var(--color-text);box-shadow:0 2px 8px #00000014}.labs-filter-dropdown:focus{border-color:var(--color-accent);box-shadow:0 0 0 3px #7a51071a;outline:none}.labs-empty-state{background:var(--color-hover);border:1px dashed #d0d0d0;border-radius:8px;padding:var(--spacing-2xl);text-align:center}.labs-empty-state p{color:#666;font-size:1.1rem;font-weight:500;margin:0}.labs-list{grid-gap:var(--spacing-lg);animation:slideInFromBottom .6s ease-out;grid-template-columns:1fr}.lab-item,.labs-list{display:grid;gap:var(--spacing-lg)}.lab-item{grid-gap:var(--spacing-lg);align-items:start;background:#fff;border:1px solid #e0e0e0;border-radius:8px;grid-template-columns:1fr auto;padding:var(--spacing-lg);transition:all var(--transition)}.lab-item:hover{border-color:var(--color-accent);box-shadow:0 6px 16px #0000001f}.lab-item-content{display:flex;flex-direction:column;gap:var(--spacing-md)}.lab-item-labels{align-items:center;display:flex;gap:var(--spacing-md)}.lab-group-badge{background:var(--color-text);border-radius:2px;color:#fff}.lab-group-badge,.lab-status-badge{font-size:.85rem;font-weight:700;letter-spacing:.5px;padding:.5rem 1rem}.lab-status-badge{background:#fff;border:2px solid var(--color-text);border-radius:2px;color:var(--color-text)}.lab-status-badge.released{background:#fff}.lab-status-badge.closed{background:var(--color-text);border-color:var(--color-text);color:#fff}.lab-item-title{color:var(--color-text);font-size:1.2rem;font-weight:700;margin:0}.lab-item-link{align-items:center;border-bottom:2px solid var(--color-accent);color:var(--color-accent);display:inline-flex;font-size:.95rem;font-weight:700;gap:.5rem;padding:.75rem 0;text-decoration:none;transition:all var(--transition)}.lab-item-link:hover{border-bottom-color:var(--color-text);color:var(--color-text)}.lab-item-actions{display:flex;flex-direction:column;gap:.75rem;min-width:130px}.lab-action-btn{border:none;border-radius:4px;cursor:pointer;font-size:.9rem;font-weight:700;padding:.75rem 1rem;text-align:center;transition:all var(--transition)}.lab-toggle-btn{background:var(--color-accent);border:1px solid var(--color-accent);color:#fff}.lab-toggle-btn.closed{background:#e8e8e8;border:1px solid #d0d0d0;color:var(--color-text)}.lab-toggle-btn:hover{box-shadow:0 4px 12px #00000026;transform:translateY(-2px)}.lab-delete-btn{background:#fff;border:1px solid #d0d0d0;color:var(--color-text)}.lab-delete-btn:hover{background:var(--color-text);box-shadow:0 4px 12px #00000026;color:#fff;transform:translateY(-2px)}@keyframes slideInFromTop{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInFromBottom{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@media (max-width:768px){.manage-labs-page{padding:var(--spacing-lg) var(--spacing-md)}.manage-labs-controls{align-items:stretch;flex-direction:column}.week-navigation{justify-content:space-between;width:100%}.add-lab-btn{width:100%}.lab-form-grid{grid-template-columns:1fr}.labs-filter-section{flex-wrap:wrap}.lab-item{gap:var(--spacing-md);grid-template-columns:1fr}.lab-item-actions{flex-direction:row;width:100%}.lab-action-btn{flex:1 1}.manage-labs-title-section h1{font-size:1.75rem}}.course-sidebar{display:flex;flex-direction:column;gap:var(--spacing-lg)}.progress-section{background-color:var(--color-dark-gray);border:1px solid var(--color-medium-gray);border-radius:var(--border-radius-md);padding:var(--spacing-lg)}.progress-item,.progress-section h3{margin-bottom:var(--spacing-md)}.progress-item{align-items:center;display:flex;gap:var(--spacing-md)}.progress-item input[type=checkbox]{accent-color:var(--color-accent);cursor:pointer;height:20px;width:20px}.progress-item label{cursor:pointer;flex:1 1}.course-form{background-color:var(--color-dark-gray);border:1px solid var(--color-medium-gray);border-radius:var(--border-radius-lg);max-width:600px;padding:var(--spacing-2xl)}.course-form h2{margin-bottom:var(--spacing-lg)}@media (max-width:768px){.auth-card{padding:var(--spacing-lg)}.dashboard-header{align-items:flex-start;flex-direction:column;gap:var(--spacing-lg)}.dashboard-stats{grid-template-columns:repeat(2,1fr)}.course-content{grid-template-columns:1fr}.course-sidebar{grid-column:1}.course-meta{flex-direction:column;gap:var(--spacing-md)}}.forum-filters{background:var(--color-dark-gray);border:1px solid var(--color-medium-gray);border-radius:var(--border-radius-md);display:flex;flex-wrap:wrap;gap:var(--spacing-md);margin-bottom:var(--spacing-xl);padding:var(--spacing-lg)}.filter-group{align-items:center;display:flex;gap:var(--spacing-sm)}.filter-group label{color:var(--color-light-gray);font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);white-space:nowrap}.filter-group select,.search-input{background:var(--color-black);border:1px solid var(--color-medium-gray);border-radius:var(--border-radius-sm);color:var(--color-white);font-size:var(--font-size-sm);padding:var(--spacing-sm) var(--spacing-md)}.search-group{flex:1 1;min-width:200px}.search-input{width:100%}.forum-list{display:flex;flex-direction:column;gap:var(--spacing-md)}.forum-item{background:var(--color-dark-gray);border:1px solid var(--color-medium-gray);border-radius:var(--border-radius-md);padding:var(--spacing-lg);transition:all .3s ease}.forum-item:hover{border-color:var(--color-accent);box-shadow:var(--shadow-lg);transform:translateY(-2px)}.forum-item-header{align-items:center;display:flex;justify-content:space-between;margin-bottom:var(--spacing-sm)}.forum-title-row{align-items:center;display:flex;gap:var(--spacing-sm)}.forum-item h3{color:var(--color-white);font-size:var(--font-size-lg);margin:0}.lock-icon,.pin-icon{font-size:var(--font-size-md)}.forum-description{color:var(--color-light-gray);line-height:1.6}.forum-description,.forum-group{margin:var(--spacing-sm) 0}.group-badge{background:#6366f133;border-radius:12px;color:var(--color-accent);font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);padding:4px 12px}.forum-tags{display:flex;flex-wrap:wrap;gap:var(--spacing-xs);margin:var(--spacing-sm) 0}.tag{background:#6464644d;border-radius:8px;color:var(--color-light-gray);font-size:12px;padding:4px 10px}.forum-meta{color:var(--color-medium-gray);display:flex;font-size:var(--font-size-sm);gap:var(--spacing-sm);margin-top:var(--spacing-md)}.thread-header{background:var(--color-dark-gray);border:1px solid var(--color-medium-gray);border-radius:var(--border-radius-md);margin-bottom:var(--spacing-xl);padding:var(--spacing-xl)}.thread-title-row{align-items:center;margin-bottom:var(--spacing-sm)}.thread-meta,.thread-title-row{display:flex;gap:var(--spacing-sm)}.thread-meta{color:var(--color-medium-gray);flex-wrap:wrap;font-size:var(--font-size-sm);margin-bottom:var(--spacing-md)}.thread-description{color:var(--color-light-gray);line-height:1.6;margin-top:var(--spacing-md)}.posts-container{display:flex;flex-direction:column;gap:var(--spacing-lg);margin-bottom:var(--spacing-xl)}.forum-post{background:var(--color-dark-gray);border:1px solid var(--color-medium-gray);border-radius:var(--border-radius-md);padding:var(--spacing-lg)}.forum-post.reply{background:#ffffff05;padding:var(--spacing-md)}.post-header{align-items:flex-start;display:flex;justify-content:space-between;margin-bottom:var(--spacing-md)}.post-author{display:flex;gap:var(--spacing-sm)}.avatar{align-items:center;background:var(--color-accent);border-radius:50%;color:#fff;display:flex;font-size:var(--font-size-lg);font-weight:700;height:40px;justify-content:center;width:40px}.author-info{display:flex;flex-direction:column;gap:4px}.author-info strong{color:var(--color-white)}.role-badge{border-radius:4px;display:inline-block;font-size:11px;font-weight:700;margin-left:var(--spacing-xs);padding:2px 8px}.role-badge.instructor{background:#10b981;color:#fff}.edited-label,.post-date{color:var(--color-medium-gray);font-size:12px}.post-actions{display:flex;gap:var(--spacing-sm)}.action-btn{background:#0000;border:1px solid var(--color-medium-gray);border-radius:var(--border-radius-sm);color:var(--color-light-gray);cursor:pointer;font-size:12px;padding:4px 12px;transition:all .2s ease}.action-btn:hover{background:var(--color-medium-gray);color:#fff}.action-btn.danger:hover{background:#ef4444;border-color:#ef4444}.post-content{color:var(--color-light-gray);line-height:1.6;margin-bottom:var(--spacing-md)}.post-footer{display:flex;gap:var(--spacing-md)}.like-btn,.reply-btn{background:#0000;border:1px solid var(--color-medium-gray);border-radius:var(--border-radius-sm);color:var(--color-light-gray);cursor:pointer;font-size:var(--font-size-sm);padding:6px 12px;transition:all .2s ease}.like-btn:hover,.reply-btn:hover{background:var(--color-medium-gray)}.like-btn.liked{background:var(--color-accent);border-color:var(--color-accent);color:#fff}.replies{display:flex;flex-direction:column;gap:var(--spacing-md);margin-top:var(--spacing-md)}.new-post-form{background:var(--color-dark-gray);border:1px solid var(--color-medium-gray);border-radius:var(--border-radius-md);padding:var(--spacing-xl)}.new-post-form h3,.new-post-form textarea{color:var(--color-white);margin-bottom:var(--spacing-md)}.new-post-form textarea{background:var(--color-black);border:1px solid var(--color-medium-gray);border-radius:var(--border-radius-sm);font-family:inherit;padding:var(--spacing-md);resize:vertical;width:100%}.replying-notice{align-items:center;background:#6366f11a;border-left:3px solid var(--color-accent);color:var(--color-light-gray);display:flex;justify-content:space-between;margin-bottom:var(--spacing-md);padding:var(--spacing-sm) var(--spacing-md)}.replying-notice button{background:#0000;border:none;color:var(--color-accent);cursor:pointer;font-size:var(--font-size-sm);text-decoration:underline}.locked-notice{background:#ef44441a;border:1px solid #ef44444d;border-radius:var(--border-radius-md);margin-top:var(--spacing-xl);padding:var(--spacing-lg);text-align:center}.back-btn,.locked-notice{color:var(--color-light-gray)}.back-btn{background:#0000;border:1px solid var(--color-medium-gray);border-radius:var(--border-radius-sm);cursor:pointer;margin-bottom:var(--spacing-lg);padding:var(--spacing-sm) var(--spacing-md);transition:all .2s ease}.back-btn:hover{background:var(--color-medium-gray)}.edit-form{margin:var(--spacing-md) 0}.edit-form textarea{background:var(--color-black);border:1px solid var(--color-medium-gray);border-radius:var(--border-radius-sm);color:var(--color-white);font-family:inherit;margin-bottom:var(--spacing-sm);padding:var(--spacing-md);resize:vertical;width:100%}.edit-actions{display:flex;gap:var(--spacing-sm)}.modal-overlay{align-items:center;background:#000c;bottom:0;display:flex;justify-content:center;left:0;padding:var(--spacing-lg);position:fixed;right:0;top:0;z-index:1000}.modal-content{background:var(--color-dark-gray);border:1px solid var(--color-medium-gray);max-height:90vh;max-width:600px;overflow-y:auto;padding:var(--spacing-xl);width:100%}.modal-header h2{color:var(--color-white)}.close-btn{align-items:center;background:#0000;border:none;color:var(--color-medium-gray);cursor:pointer;display:flex;font-size:32px;height:32px;justify-content:center;padding:0;transition:color .2s ease;width:32px}.close-btn:hover{color:var(--color-white)}.modal-actions{display:flex;gap:var(--spacing-md);justify-content:flex-end;margin-top:var(--spacing-lg)}.container{margin:0;max-width:100%;padding:3rem .75rem;padding:var(--spacing-2xl) var(--spacing-sm)}.btn{padding:1rem 1.5rem;transition:all .3s ease}.btn-primary{background-color:#1a1a1a;color:#fff}.btn-secondary{border:1px solid #1a1a1a;color:#1a1a1a}.btn-secondary:hover{background-color:#1a1a1a;color:#fff}.btn-outline{border:2px solid #fff;color:#fff}.btn-outline:hover{background-color:#fff;color:#1a1a1a}.dashboard-header{margin-bottom:3rem;margin-bottom:var(--spacing-2xl)}.dashboard-header h1{font-size:2.5rem;font-weight:700;letter-spacing:-1px;margin-bottom:.5rem}.dashboard-header p{color:#666;font-size:.95rem}.stats-grid{grid-gap:1.5rem;grid-gap:var(--spacing-lg);display:grid;gap:1.5rem;gap:var(--spacing-lg);grid-template-columns:repeat(auto-fit,minmax(200px,1fr));margin-bottom:3rem;margin-bottom:var(--spacing-2xl)}.stat-card{background-color:#fff;background-color:var(--color-bg);border:1px solid #e8e8e8;border:1px solid var(--color-border);border-radius:4px;padding:1.5rem;padding:var(--spacing-lg);text-align:left}.stat-number{color:#7a5107;color:var(--color-accent);font-size:2.5rem;font-weight:700;margin-bottom:.5rem}.stat-label{color:#666;font-size:.875rem;letter-spacing:.5px;text-transform:uppercase}.course-grid{grid-gap:1.5rem;grid-gap:var(--spacing-lg);display:grid;gap:1.5rem;gap:var(--spacing-lg);grid-template-columns:repeat(auto-fill,minmax(450px,1fr))}.course-card{background-color:#fff;border:1px solid #e8e8e8;padding:1rem;transition:all .3s ease}.course-card:hover{border-color:#1a1a1a}.course-card-content{flex:1 1}.course-card-footer{align-items:flex-end;display:flex;justify-content:space-between;margin-top:.75rem}.course-progress-section{flex:1 1}.engage-button{background:linear-gradient(135deg,#7a5107,#1a1a1a);margin-left:1rem;transition:all .3s ease}.course-description{margin-bottom:.5rem}.course-meta{gap:.75rem;margin-bottom:.75rem}.badge{background-color:#f5f5f5;color:#1a1a1a;padding:.5rem .75rem}.progress-bar{background-color:#e8e8e8}.progress-fill{background-color:#1a1a1a;transition:width .3s ease}.section-header{align-items:center;border-bottom:3px solid #7a5107;border-bottom:3px solid var(--color-accent);display:flex;justify-content:space-between;margin-bottom:1.5rem;margin-bottom:var(--spacing-lg);padding-bottom:1.5rem;padding-bottom:var(--spacing-lg)}.section-header h2{color:#1a1a1a;font-size:1.75rem;font-weight:700;letter-spacing:-.5px}.page.active{display:block}@media (max-width:768px){.course-grid{grid-template-columns:1fr}.stats-grid{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}.dashboard-header h1{font-size:1.75rem}.section-header h2{font-size:1.25rem}.course-title{font-size:1rem}.stat-number{font-size:2rem}.container{padding:1.5rem 1rem;padding:var(--spacing-lg) var(--spacing-md)}}@media (max-width:480px){.course-grid,.stats-grid{grid-template-columns:1fr}.dashboard-header h1{font-size:1.5rem}.stat-number{font-size:1.75rem}.course-title{font-size:.95rem}.container{padding:1.5rem .75rem;padding:var(--spacing-lg) var(--spacing-sm)}}.courses-container{width:100%}.lab-card{background-color:var(--color-bg);border:1px solid var(--color-border);border-radius:8px;cursor:pointer;overflow:hidden;transition:all var(--transition)}.lab-card:hover{box-shadow:0 8px 20px #0000001a;transform:translateY(-4px)}.lab-thumbnail{background:linear-gradient(135deg,var(--color-accent) 0,#1a1a1a 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