:root{--primary:#4361ee;--primary-light:#4895ef;--secondary:#3f37c9;--success:#4cc9f0;--info:#4895ef;--warning:#f72585;--light-bg:#f8f9fa;--sidebar-width:250px}body{background-color:#f5f7fb;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}#sidebar{width:var(--sidebar-width);background:linear-gradient(180deg,var(--primary) 0,var(--secondary) 100%);color:white;height:100vh;position:fixed;transition:all .3s;z-index:1000;box-shadow:3px 0 10px rgba(0,0,0,.1)}.sidebar-header{padding:20px;background-color:rgba(0,0,0,.1)}.sidebar-header h3{font-weight:700;margin-bottom:0}.sidebar-header p{font-size:.85rem;opacity:.8;margin-bottom:0}.sidebar-menu{padding:0;list-style:none}.sidebar-menu li{padding:0}.sidebar-menu a{color:white;padding:12px 20px;display:block;text-decoration:none;transition:all .2s;border-left:3px solid transparent}.sidebar-menu a.active,.sidebar-menu a:hover{background-color:rgba(255,255,255,.1);border-left:3px solid white}.sidebar-menu i{margin-right:10px;width:20px;text-align:center}#content{margin-left:var(--sidebar-width);transition:all .3s;min-height:100vh}#topbar{background-color:white;box-shadow:0 2px 10px rgba(0,0,0,.08);padding:15px 25px;position:sticky;top:0;z-index:100}.search-box{position:relative;max-width:400px}.search-box input{padding-left:40px;border-radius:20px;background-color:var(--light-bg);border:1px solid #eaeaea}.search-box i{position:absolute;left:15px;top:50%;transform:translateY(-50%);color:#6c757d}.user-menu img{width:40px;height:40px;border-radius:50%;object-fit:cover;margin-right:10px}.dashboard-card{border-radius:10px;border:none;box-shadow:0 4px 6px rgba(0,0,0,.05);transition:transform .3s,box-shadow .3s;margin-bottom:20px;height:Auto}.dashboard-card:hover{transform:translateY(-5px);box-shadow:0 10px 15px rgba(0,0,0,.1)}.card-icon{width:60px;height:60px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:24px;color:white}.bg-primary-light{background-color:var(--primary-light)}.bg-success-light{background-color:var(--success)}.bg-warning-light{background-color:var(--warning)}.bg-info-light{background-color:var(--info)}.course-card{border-radius:10px;border:none;box-shadow:0 4px 6px rgba(0,0,0,.05);transition:all .3s;height:100%;cursor:pointer}.course-card:focus,.course-card:hover{transform:translateY(-5px);box-shadow:0 10px 15px rgba(0,0,0,.1);outline:2px solid var(--primary)}.course-card.selected{border:2px solid var(--primary);background-color:rgba(67,97,238,.05)}.course-badge{position:absolute;top:10px;right:10px}.course-progress{height:6px;border-radius:3px}#courseDetailsPanel{background-color:white;border-radius:10px;box-shadow:0 4px 6px rgba(0,0,0,.05);padding:20px;position:sticky;top:100px}.course-detail-item{margin-bottom:15px;padding-bottom:15px;border-bottom:1px solid #eee}.course-detail-item:last-child{border-bottom:none}.filters-section{background-color:white;border-radius:10px;box-shadow:0 4px 6px rgba(0,0,0,.05);padding:20px;margin-bottom:20px}#mobile-sidebar{position:fixed;top:0;left:-100%;width:280px;height:100vh;background:linear-gradient(180deg,var(--primary) 0,var(--secondary) 100%);z-index:2000;transition:left .3s;overflow-y:auto}#mobile-sidebar.show{left:0}.overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgba(0,0,0,.5);z-index:1500;display:none}.overlay.show{display:block}@media (max-width:992px){#sidebar{margin-left:-250px}#content,#sidebar.show{margin-left:0}#content.sidebar-show{margin-left:250px}}.btn-primary{background-color:var(--primary);border-color:var(--primary)}.btn-primary:hover{background-color:var(--secondary);border-color:var(--secondary)}.pagination-container{display:flex;justify-content:center;margin-top:30px}.btn:focus,.form-control:focus,.form-select:focus{box-shadow:0 0 0 3px rgba(67,97,238,.3)}.export-btn{background-color:#28a745;border-color:#28a745;color:white}.export-btn:hover{background-color:#218838;border-color:#1e7e34}