:root{--bg-primary: #0a0a1a;--bg-secondary: #12122a;--bg-card: rgba(30, 30, 60, .6);--bg-card-hover: rgba(40, 40, 80, .7);--text-primary: #ffffff;--text-secondary: #a0a0c0;--text-muted: #6060a0;--accent-primary: #6366f1;--accent-secondary: #8b5cf6;--accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);--success: #22c55e;--warning: #f59e0b;--danger: #ef4444;--border-color: rgba(100, 100, 150, .3);--shadow-glow: 0 0 30px rgba(99, 102, 241, .15);--sidebar-width: 260px;--header-height: 70px;--transition-fast: .15s ease;--transition-normal: .3s ease}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg-primary);color:var(--text-primary);min-height:100vh;overflow-x:hidden}body:before{content:"";position:fixed;top:0;left:0;width:100%;height:100%;background-image:radial-gradient(2px 2px at 20px 30px,rgba(255,255,255,.3),transparent),radial-gradient(2px 2px at 40px 70px,rgba(255,255,255,.2),transparent),radial-gradient(1px 1px at 90px 40px,rgba(255,255,255,.4),transparent),radial-gradient(2px 2px at 130px 80px,rgba(255,255,255,.2),transparent),radial-gradient(1px 1px at 160px 120px,rgba(255,255,255,.3),transparent);background-repeat:repeat;background-size:200px 200px;pointer-events:none;z-index:-1;animation:twinkle 4s ease-in-out infinite alternate}@keyframes twinkle{0%{opacity:.5}to{opacity:1}}#root{display:flex;min-height:100vh}.glass-card{background:var(--bg-card);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--border-color);border-radius:16px;padding:24px;transition:all var(--transition-normal)}.glass-card:hover{background:var(--bg-card-hover);box-shadow:var(--shadow-glow);transform:translateY(-2px)}h1{font-size:2rem;font-weight:700}h2{font-size:1.5rem;font-weight:600}h3{font-size:1.25rem;font-weight:600}h4{font-size:1rem;font-weight:500}.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border-radius:10px;border:none;font-weight:500;cursor:pointer;transition:all var(--transition-fast)}.btn-primary{background:var(--accent-gradient);color:#fff}.btn-primary:hover{transform:scale(1.02);box-shadow:0 4px 20px #6366f166}.btn-ghost{background:transparent;color:var(--text-secondary);border:1px solid var(--border-color)}.btn-ghost:hover{background:var(--bg-card);color:var(--text-primary)}.badge{display:inline-flex;align-items:center;padding:4px 12px;border-radius:20px;font-size:.75rem;font-weight:500}.badge-success{background:#22c55e33;color:var(--success)}.badge-warning{background:#f59e0b33;color:var(--warning)}.badge-danger{background:#ef444433;color:var(--danger)}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .4s ease forwards}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.pulse{animation:pulse 2s ease-in-out infinite}.sidebar{position:fixed;left:0;top:0;width:var(--sidebar-width);height:100vh;background:var(--bg-secondary);border-right:1px solid var(--border-color);display:flex;flex-direction:column;z-index:100;transition:transform var(--transition-normal)}.sidebar-header{padding:24px;border-bottom:1px solid var(--border-color)}.logo{display:flex;align-items:center;gap:12px}.logo-icon{width:40px;height:40px;padding:8px;background:var(--accent-gradient);border-radius:12px;color:#fff}.logo-text{display:flex;flex-direction:column}.logo-title{font-size:1.25rem;font-weight:700;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.logo-subtitle{font-size:.75rem;color:var(--text-muted)}.sidebar-nav{flex:1;padding:16px 12px;display:flex;flex-direction:column;gap:4px}.nav-item{display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:10px;color:var(--text-secondary);text-decoration:none;transition:all var(--transition-fast)}.nav-item:hover{background:var(--bg-card);color:var(--text-primary)}.nav-item.active{background:var(--accent-gradient);color:#fff;box-shadow:0 4px 15px #6366f14d}.sidebar-footer{padding:16px;border-top:1px solid var(--border-color)}.mentor-info{display:flex;align-items:center;gap:12px;padding:12px;background:var(--bg-card);border-radius:12px}.mentor-avatar{width:40px;height:40px;background:var(--accent-gradient);border-radius:10px;display:flex;align-items:center;justify-content:center;font-weight:600;color:#fff}.mentor-details{display:flex;flex-direction:column;flex:1}.mentor-name{font-size:.875rem;font-weight:500}.mentor-status{font-size:.75rem;color:var(--success)}.logout-btn{padding:8px;background:transparent;border:1px solid var(--border-color);border-radius:8px;color:var(--text-muted);cursor:pointer;transition:all var(--transition-fast)}.logout-btn:hover{background:#ef44441a;border-color:var(--danger);color:var(--danger)}@media(max-width:768px){.sidebar{transform:translate(-100%);box-shadow:24px 0 48px #00000052}.sidebar.open{transform:translate(0)}}.header{position:fixed;top:0;left:var(--sidebar-width);right:0;height:var(--header-height);background:#0a0a1acc;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between;padding:0 32px;z-index:50}.header-left{display:flex;align-items:center;gap:10px}.menu-btn{display:none;width:40px;height:40px;border:1px solid var(--border-color);border-radius:10px;background:var(--bg-card);color:var(--text-secondary);align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition-fast)}.menu-btn:hover{color:var(--text-primary);background:var(--bg-card-hover)}.page-title{font-size:1.5rem;font-weight:600}.header-right{display:flex;align-items:center;gap:16px}.search-box{display:flex;align-items:center;gap:10px;padding:10px 16px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:10px;transition:all var(--transition-fast)}.search-box:focus-within{border-color:var(--accent-primary);box-shadow:0 0 0 3px #6366f133}.search-box input{background:transparent;border:none;outline:none;color:var(--text-primary);font-size:.875rem;width:200px}.search-box input::placeholder{color:var(--text-muted)}.search-box svg{color:var(--text-muted)}.notification-btn{position:relative;width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:var(--bg-card);border:1px solid var(--border-color);border-radius:10px;color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast)}.notification-btn:hover{background:var(--bg-card-hover);color:var(--text-primary)}.notification-btn.active{border-color:var(--accent-primary);color:var(--text-primary)}.notification-badge{position:absolute;top:-4px;right:-4px;min-width:18px;height:18px;padding:0 5px;background:var(--danger);border-radius:9px;font-size:.7rem;font-weight:600;display:flex;align-items:center;justify-content:center}.notification-wrapper{position:relative}.header-notification-popup{position:absolute;top:calc(100% + 10px);right:0;width:min(380px,calc(100vw - 24px));max-height:460px;overflow:hidden;display:flex;flex-direction:column;background:#121322f5;border:1px solid var(--border-color);border-radius:14px;box-shadow:0 18px 40px #00000059;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);z-index:90}.header-notification-popup-header{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:12px 14px;border-bottom:1px solid var(--border-color)}.header-notification-clear-btn{border:1px solid var(--border-color);background:var(--bg-card);color:var(--text-secondary);border-radius:8px;padding:6px 10px;font-size:.75rem;cursor:pointer}.header-notification-clear-btn:hover{color:var(--text-primary);background:var(--bg-card-hover)}.header-notification-list{overflow-y:auto;padding:8px}.header-notification-item{display:flex;align-items:flex-start;gap:8px;border:1px solid transparent;border-radius:10px;transition:all var(--transition-fast)}.header-notification-item+.header-notification-item{margin-top:6px}.header-notification-item:not(.read){background:#6366f114;border-color:#6366f13d}.header-notification-link{flex:1;min-width:0;text-align:left;border:none;background:transparent;padding:10px 8px 10px 12px;color:var(--text-primary);cursor:pointer}.header-notification-link:hover .header-notification-title{color:#a5b4fc}.header-notification-title{display:block;font-size:.86rem;font-weight:600;margin-bottom:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.header-notification-message{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:.8rem;line-height:1.45;color:var(--text-secondary);margin-bottom:5px}.header-notification-time{font-size:.72rem;color:var(--text-muted)}.header-notification-remove{border:none;background:transparent;color:var(--text-muted);cursor:pointer;margin:8px 8px 0 0}.header-notification-remove:hover{color:#fca5a5}.header-notification-empty{padding:24px 12px;text-align:center;color:var(--text-muted);font-size:.86rem}@media(max-width:768px){.header{left:0;padding:0 16px}.menu-btn{display:inline-flex}.search-box{display:none}.page-title{font-size:1.2rem}.header-notification-popup{right:-8px}}.toast-container{position:fixed;bottom:24px;right:24px;display:flex;flex-direction:column;gap:12px;z-index:9999;pointer-events:none}.toast{display:flex;align-items:flex-start;gap:16px;padding:16px 20px;border-radius:12px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2);box-shadow:0 8px 32px #0000004d;max-width:400px;min-width:300px;pointer-events:auto;animation:slideIn .3s ease-out}.toast.slide-in{animation:slideIn .3s ease-out forwards}@keyframes slideIn{0%{opacity:0;transform:translate(400px)}to{opacity:1;transform:translate(0)}}.toast.toast-success{background:linear-gradient(135deg,#22c55e26,#22c55e0d);border-color:#22c55e4d}.toast.toast-success .toast-icon{color:#22c55e}.toast.toast-error{background:linear-gradient(135deg,#ef444426,#ef44440d);border-color:#ef44444d}.toast.toast-error .toast-icon{color:#ef4444}.toast.toast-warning{background:linear-gradient(135deg,#f59e0b26,#f59e0b0d);border-color:#f59e0b4d}.toast.toast-warning .toast-icon{color:#f59e0b}.toast.toast-info{background:linear-gradient(135deg,#6366f126,#6366f10d);border-color:#6366f14d}.toast.toast-info .toast-icon{color:#6366f1}.toast-icon{flex-shrink:0;margin-top:2px}.toast-content{flex:1;min-width:0}.toast-title{margin:0 0 4px;font-size:14px;font-weight:600;color:#fff}.toast-message{margin:0;font-size:13px;color:#fffc;line-height:1.4}.toast-close{flex-shrink:0;background:none;border:none;color:#fff9;cursor:pointer;padding:0;margin-top:0;transition:color .2s ease}.toast-close:hover{color:#fff}.notification-banner-container{background:#ffffff08;border:1px solid var(--border-color);border-radius:16px;overflow:hidden;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}.notification-header{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid var(--border-color);background:#ffffff05}.notification-header-left{display:flex;align-items:center;gap:10px;font-weight:600;font-size:.9375rem;color:var(--text-primary)}.dismiss-all-btn{background:transparent;border:none;color:var(--accent-primary);font-size:.8125rem;cursor:pointer;padding:6px 12px;border-radius:6px;transition:all var(--transition-fast)}.dismiss-all-btn:hover{background:#6366f11a}.notification-list{display:flex;flex-direction:column}.notification-item{display:flex;align-items:flex-start;gap:14px;padding:16px 20px;border-bottom:1px solid var(--border-color);transition:all var(--transition-fast);animation:slideIn .3s ease-out}.notification-item:last-child{border-bottom:none}.notification-item:hover{background:#ffffff08}@keyframes slideIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.notification-icon{flex-shrink:0;width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:10px;transition:all var(--transition-fast)}.notification-info .notification-icon{background:#3b82f626;color:#3b82f6}.notification-warning .notification-icon{background:#f59e0b26;color:#f59e0b}.notification-success .notification-icon{background:#22c55e26;color:#22c55e}.notification-alert .notification-icon{background:#ef444426;color:#ef4444}.notification-content{flex:1;display:flex;flex-direction:column;gap:4px;min-width:0}.notification-title{font-weight:600;font-size:.875rem;color:var(--text-primary)}.notification-message{font-size:.8125rem;color:var(--text-secondary);line-height:1.5}.notification-time{font-size:.75rem;color:var(--text-muted);margin-top:2px}.notification-close{flex-shrink:0;background:transparent;border:none;color:var(--text-muted);cursor:pointer;padding:6px;border-radius:6px;display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast)}.notification-close:hover{background:#ffffff1a;color:var(--text-primary)}.notification-empty{padding:40px 20px;text-align:center;color:var(--text-muted);font-size:.875rem}@media(max-width:600px){.notification-item,.notification-header{padding:14px 16px}.notification-icon{width:32px;height:32px}}.dashboard{display:flex;flex-direction:column;gap:24px}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.stat-card{display:flex;align-items:center;gap:16px}.stat-icon{width:56px;height:56px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--accent-color),transparent);border-radius:14px;color:var(--accent-color)}.stat-content{display:flex;flex-direction:column}.stat-value{font-size:1.75rem;font-weight:700}.stat-label{font-size:.875rem;color:var(--text-secondary)}.dashboard-stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:1.25rem}.dashboard-stat-card{display:flex;flex-direction:column;padding:1.75rem;text-decoration:none;position:relative;overflow:hidden;transition:all .3s ease;animation:dashboardFadeInUp .5s ease forwards;opacity:0;min-height:160px;border:none;cursor:pointer;text-align:left;width:100%}@keyframes dashboardFadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.dashboard-stat-card:hover{transform:translateY(-6px);box-shadow:0 16px 32px #0000001f}.dashboard-stat-card:hover .dashboard-stat-arrow{transform:translate(4px);color:#fff}.dashboard-stat-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:1.25rem}.dashboard-stat-icon{display:flex;align-items:center;justify-content:center;width:56px;height:56px;border-radius:14px;color:#fff}.dashboard-stat-arrow{color:#ffffffb3;transition:all .2s ease}.dashboard-stat-content{flex:1}.dashboard-stat-value{font-size:1.75rem;font-weight:700;color:#fff;margin-bottom:.25rem}.dashboard-stat-label{font-size:.9rem;color:#ffffffe6;margin:0}.updates-section{margin-top:1.5rem}.updates-header{margin-bottom:1rem}.updates-header h2{font-size:1.1rem;font-weight:600;color:#fff;margin:0}.updates-list{display:flex;flex-direction:column;gap:8px}.update-item{display:flex;align-items:center;gap:14px;padding:14px 16px;background:#ffffff05;border-radius:12px;cursor:pointer;transition:all .2s ease;animation:dashboardFadeInUp .4s ease forwards;opacity:0}.update-item:hover{background:#ffffff0f;transform:translate(4px)}.update-icon{width:40px;height:40px;display:flex;align-items:center;justify-content:center;border-radius:10px;flex-shrink:0}.update-new_concern .update-icon{background:#22c55e33;color:#22c55e}.update-inactive_student .update-icon{background:#f59e0b33;color:#f59e0b}.update-content{flex:1;display:flex;flex-direction:column;gap:4px;min-width:0}.update-main{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.update-student{font-weight:600;font-size:.9375rem;color:#fff}.update-message{font-size:.875rem;color:#ffffffb3}.update-time{font-size:.75rem;color:#ffffff80}.update-arrow{color:#fff6;flex-shrink:0;transition:transform .2s ease}.update-item:hover .update-arrow{transform:translate(3px);color:#ffffffb3}.dashboard-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:24px}.section-header{margin-bottom:20px}.section-header h2{font-size:1.1rem;font-weight:600}.todo-item{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;background:#ffffff08;border-radius:10px;transition:all var(--transition-fast)}.todo-item:hover{background:#ffffff0f}.todo-info{display:flex;align-items:center;gap:12px}.todo-student{font-weight:600;color:var(--text-primary)}.todo-subject{padding:2px 8px;background:var(--accent-gradient);border-radius:4px;font-size:.75rem;font-weight:500}.todo-title{color:var(--text-secondary);font-size:.875rem}.activity-list{display:flex;flex-direction:column;gap:12px}.activity-item{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid var(--border-color)}.activity-item:last-child{border-bottom:none}.activity-avatar{width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:var(--bg-card-hover);border-radius:8px;font-weight:600;font-size:.875rem}.activity-content{flex:1;display:flex;flex-direction:column}.activity-student{font-weight:500;font-size:.875rem}.activity-action{color:var(--text-secondary);font-size:.8rem}.activity-time{color:var(--text-muted);font-size:.75rem}.study-chart{margin-top:0}.chart-placeholder{height:200px;display:flex;align-items:flex-end;padding:20px 0}.chart-bars{width:100%;height:100%;display:flex;align-items:flex-end;justify-content:space-around;gap:20px}.chart-bar-container{flex:1;display:flex;flex-direction:column;align-items:center;height:100%;justify-content:flex-end}.chart-bar{width:100%;max-width:50px;background:var(--accent-gradient);border-radius:8px 8px 0 0;transition:height .5s ease}.chart-label{margin-top:8px;font-size:.75rem;color:var(--text-secondary)}@media(max-width:1200px){.stats-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:900px){.dashboard-grid{grid-template-columns:1fr}}@media(max-width:600px){.stats-grid{grid-template-columns:1fr}.todo-info{flex-wrap:wrap}}.dashboard-loading,.dashboard-error{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:400px;gap:16px;color:var(--text-secondary)}.dashboard-error button{padding:10px 20px;background:var(--accent-gradient);border:none;border-radius:8px;color:#fff;cursor:pointer}.empty-message{color:var(--text-muted);font-size:.875rem;text-align:center;padding:20px}.category-grid{display:flex;flex-wrap:wrap;gap:10px}.category-chip{display:flex;align-items:center;gap:8px;padding:10px 16px;background:#ffffff08;border:1px solid var(--border-color);border-radius:20px;font-size:.875rem}.category-subject{font-size:.7rem;padding:2px 8px;background:var(--accent-gradient);border-radius:10px;color:#fff}.student-list-section .section-header{display:flex;justify-content:space-between;align-items:center}.view-all-link{display:flex;align-items:center;gap:4px;color:var(--accent-primary);font-size:.875rem;text-decoration:none;transition:all var(--transition-fast)}.view-all-link:hover{gap:8px}.student-list{display:flex;flex-direction:column;gap:8px}.student-item{display:flex;align-items:center;gap:16px;padding:14px 16px;background:#ffffff05;border-radius:12px;text-decoration:none;color:inherit;transition:all var(--transition-fast)}.student-item:hover{background:#ffffff0f;transform:translate(4px)}.student-avatar{width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:var(--accent-gradient);border-radius:12px;font-weight:600;font-size:1rem;color:#fff}.student-info{flex:1;display:flex;flex-direction:column}.student-name{font-weight:500;font-size:.9375rem}.student-email{color:var(--text-muted);font-size:.8rem}.student-meta{text-align:right}.last-login{font-size:.75rem;color:var(--text-secondary)}.last-login.inactive,.chevron{color:var(--text-muted)}.quick-actions .action-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:12px}.action-item{display:flex;flex-direction:column;align-items:center;gap:10px;padding:20px;background:#ffffff05;border:1px solid var(--border-color);border-radius:12px;text-decoration:none;color:var(--text-primary);transition:all var(--transition-fast)}.action-item:hover{background:#ffffff0f;border-color:var(--accent-primary);transform:translateY(-2px)}.action-item span{font-size:.875rem;font-weight:500}.students-page{display:flex;flex-direction:column;gap:24px}.students-header{display:flex;align-items:center;justify-content:space-between}.students-count{font-size:1rem;color:var(--text-secondary)}.students-count span{font-size:1.5rem;font-weight:700;color:var(--text-primary);margin:0 4px}.students-filters{display:flex;gap:8px}.students-filters .btn.active{background:var(--accent-gradient);color:#fff;border-color:transparent}.students-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.student-card{text-decoration:none;color:inherit;animation:fadeIn .4s ease 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