:root{--sidebar-width: 280px;--dash-bg: #F8FAFC;--panel-bg: rgba(255, 255, 255, .95)}.dash-body{background-color:var(--dash-bg);display:flex;min-height:100vh;font-family:var(--font-body);overflow-x:hidden}.dash-sidebar{width:var(--sidebar-width);background:var(--clr-white);color:var(--clr-text-main);position:fixed;top:0;left:0;height:100vh;z-index:100;display:flex;flex-direction:column;transition:transform var(--transition-normal);box-shadow:4px 0 20px #00000014;border-right:1px solid var(--clr-border)}.sidebar-header{padding:30px 24px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--clr-border)}.sidebar-logo{height:40px}.mobile-close{display:none;background:none;border:none;color:var(--clr-text-main);opacity:.7;cursor:pointer}.sidebar-nav{flex:1;padding:30px 16px;display:flex;flex-direction:column;gap:8px}.nav-item{display:flex;align-items:center;gap:16px;padding:14px 20px;color:var(--clr-text-muted);text-decoration:none;border-radius:12px;font-weight:500;transition:all var(--transition-fast);background:transparent;border:none;font-size:1rem;cursor:pointer;font-family:var(--font-body);width:100%;text-align:left}.nav-item:hover{background:#00a38914;color:var(--clr-primary)}.nav-item.active{background:var(--clr-action);color:var(--clr-white);box-shadow:0 4px 12px #00a3894d}.sidebar-footer{padding:24px 16px;border-top:1px solid var(--clr-border)}.text-danger:hover{color:#ef4444;background:#ef44441a}.dash-main{flex:1;margin-left:var(--sidebar-width);padding:40px;transition:margin-left var(--transition-normal);max-width:1400px}.dash-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:40px;animation:fadeInDown .6s ease}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}.mobile-menu-btn{display:none;background:var(--clr-white);border:1px solid var(--clr-border);padding:8px;border-radius:8px;cursor:pointer;color:var(--clr-primary);box-shadow:var(--shadow-sm)}.user-greeting h2{font-size:1.8rem;margin-bottom:4px;color:var(--clr-primary)}.user-greeting p{color:var(--clr-text-muted);font-size:.95rem;margin:0}.user-avatar-placeholder{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--clr-action),var(--clr-primary));color:var(--clr-white);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.2rem;box-shadow:0 4px 12px #00a3894d}.section-title{margin-bottom:24px}.section-title h3{font-size:1.4rem;color:var(--clr-primary)}.courses-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:30px}.glass-panel{background:var(--panel-bg);border:1px solid rgba(255,255,255,.5);border-radius:20px;box-shadow:0 10px 30px #0000000a,inset 0 1px #fff;overflow:hidden;transition:transform .3s cubic-bezier(.175,.885,.32,1.275),box-shadow .3s ease;animation:zoomIn .5s ease backwards}@keyframes zoomIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.glass-panel:nth-child(2){animation-delay:.1s}.glass-panel:hover{transform:translateY(-8px);box-shadow:0 20px 40px #00000014,inset 0 1px #fff}.course-thumb{width:100%;height:180px;position:relative;overflow:hidden;background:#e2e8f0}.course-thumb img{width:100%;height:100%;-o-object-fit:cover;object-fit:cover;transition:transform .5s ease}.glass-panel:hover .course-thumb img{transform:scale(1.05)}.course-badge{position:absolute;top:16px;left:16px;background:var(--clr-accent);color:var(--clr-white);padding:6px 12px;border-radius:100px;font-size:.75rem;font-weight:800;text-transform:uppercase;letter-spacing:1px;box-shadow:0 4px 10px #ff8c4266}.play-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:#0b192c66;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s ease}.glass-panel:hover .play-overlay{opacity:1}.course-info{padding:24px}.course-meta{display:flex;align-items:center;gap:8px;font-size:.8rem;color:var(--clr-action);font-weight:600;margin-bottom:12px}.course-title{font-size:1.25rem;margin-bottom:8px}.course-desc{font-size:.9rem;color:var(--clr-text-muted);margin-bottom:24px;line-height:1.5}.progress-container{margin-bottom:20px}.progress-meta{display:flex;justify-content:space-between;font-size:.8rem;font-weight:600;color:var(--clr-text-main);margin-bottom:8px}.progress-bar{height:8px;background:#e2e8f0;border-radius:10px;overflow:hidden}.progress-fill{height:100%;background:linear-gradient(90deg,var(--clr-action),#34d399);border-radius:10px;transition:width 1s ease-in-out}.locked-course .course-thumb{display:flex;align-items:center;justify-content:center}.locked-course .thumb-gradient{position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(135deg,#cbd5e1,#94a3b8)}.lock-icon{position:relative;z-index:2;background:#ffffffe6;width:64px;height:64px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#475569;box-shadow:0 8px 20px #0000001a}.locked-course .glass-panel:hover{transform:none;box-shadow:0 10px 30px #0000000a}.global-loader{position:fixed;top:0;left:0;right:0;bottom:0;background:var(--dash-bg);z-index:9999;display:flex;flex-direction:column;align-items:center;justify-content:center;transition:opacity .4s ease,visibility .4s ease}.global-loader.hidden{opacity:0;visibility:hidden}.spinner{width:50px;height:50px;border:4px solid rgba(0,163,137,.2);border-top-color:var(--clr-action);border-radius:50%;animation:spin 1s linear infinite;margin-bottom:16px}.global-loader p{font-weight:600;color:var(--clr-text-main);animation:pulse 1.5s infinite}.dash-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;-webkit-backdrop-filter:none;backdrop-filter:none;z-index:90;opacity:0;visibility:hidden;transition:all .3s ease}.dash-overlay.active{opacity:1;visibility:visible}@media (max-width: 1024px){.dash-main{padding:30px 24px}}@media (max-width: 768px){.dash-sidebar{transform:translate(-100%)}.dash-sidebar.active{transform:translate(0)}.dash-main{margin-left:0;padding:24px 16px}.mobile-menu-btn,.mobile-close{display:block}.user-greeting h2{font-size:1.4rem}}