@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Playfair+Display:ital,wght@0,600;0,700;1,600&display=swap";.student-layout{display:flex;height:100vh;width:100vw;background-color:var(--bg-student-body);color:var(--text-student-primary)}.student-sidebar{width:260px;background-color:var(--bg-student-sidebar);height:100%;padding:var(--space-md);display:flex;flex-direction:column;border-right:var(--border-student-solid);flex-shrink:0}.student-sidebar .brand{display:flex;align-items:center;gap:12px;margin-bottom:var(--space-xl);font-weight:600;color:var(--text-student-primary)}.student-sidebar .brand-icon{width:24px;height:24px;background:var(--text-student-primary);border-radius:6px}.student-sidebar .nav-group{margin-bottom:var(--space-lg)}.student-sidebar .nav-item{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;color:var(--text-student-secondary);font-size:14px;border-radius:var(--radius-sm);transition:all .2s ease;margin-bottom:2px;gap:10px}.student-sidebar .nav-item:hover,.student-sidebar .nav-item.active{background-color:var(--bg-student-active);color:var(--text-student-primary)}.student-sidebar .nav-item svg{opacity:.7}.student-sidebar .nav-item span:first-of-type{flex:1}.student-sidebar .badge-count{font-size:12px;font-weight:500}.student-sidebar .nav-section-title{font-size:12px;color:var(--text-student-tertiary);margin-bottom:var(--space-xs);padding-left:12px;margin-top:var(--space-lg)}.student-sidebar .user-profile{margin-top:auto;display:flex;align-items:center;gap:10px;padding-top:var(--space-md);border-top:var(--border-student-solid)}.student-sidebar .avatar{width:32px;height:32px;background-color:#ddd;border-radius:50%;background-size:cover}.student-sidebar .user-info{font-size:13px;line-height:1.3}.student-sidebar .user-name{font-weight:500}.student-sidebar .user-status{color:var(--text-student-secondary);font-size:11px}.student-sidebar .status-dot{display:inline-block;width:6px;height:6px;background-color:var(--accent-student-green);border-radius:50%;margin-right:4px}.logout-btn{background:none;border:none;cursor:pointer;color:var(--text-student-secondary);display:flex;align-items:center;padding:6px;border-radius:var(--radius-sm);margin-left:auto;transition:color .2s}.logout-btn:hover{color:var(--text-student-primary);background:var(--bg-student-active)}.student-main{flex:1;overflow-y:auto;padding:var(--space-xl) 60px;display:flex;flex-direction:column;gap:40px;max-width:1200px;margin:0 auto;width:100%}.student-main:has(.screening-test-page){padding:0;max-width:100%;gap:0;overflow:hidden;margin:0;height:100%}.teacher-app-container{display:grid;grid-template-columns:240px 1fr;height:100vh;width:100vw;background-color:var(--bg-teacher-body);color:var(--text-teacher-primary)}.teacher-sidebar{background:var(--bg-teacher-card);border-right:1px solid var(--border-teacher-subtle);padding:20px 12px;display:flex;flex-direction:column;gap:24px}.teacher-sidebar .logo-area{padding:0 12px;margin-bottom:8px;display:flex;align-items:center;gap:8px;font-weight:600;color:var(--text-teacher-primary)}.teacher-sidebar .nav-section{display:flex;flex-direction:column;gap:4px}.teacher-sidebar .nav-label{padding:0 12px;font-size:.75rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-teacher-tertiary);font-weight:600;margin-bottom:4px}.teacher-sidebar .nav-item{display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:var(--radius-md);color:var(--text-teacher-secondary);font-size:.875rem;transition:all .15s ease}.teacher-sidebar .nav-item:hover{background-color:var(--bg-teacher-hover);color:var(--text-teacher-primary)}.teacher-sidebar .nav-item.active{background-color:var(--bg-teacher-hover);color:var(--text-teacher-primary);font-weight:500}.teacher-main-content{overflow-y:auto;padding:32px}.sidebar-footer{display:flex;align-items:center;gap:10px;padding:14px 12px;border-top:1px solid var(--border-teacher-subtle);margin-top:auto}.sidebar-user{display:flex;align-items:center;gap:10px;flex:1;min-width:0}.sidebar-user-info{min-width:0}.sidebar-user-name{font-size:13px;font-weight:500;color:var(--text-teacher-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-user-role{font-size:11px;color:var(--text-teacher-secondary);text-transform:capitalize}.logout-btn{background:none;border:none;cursor:pointer;color:var(--text-teacher-secondary);display:flex;align-items:center;padding:6px;border-radius:6px;flex-shrink:0;transition:color .15s}.logout-btn:hover{color:var(--text-teacher-primary);background:var(--bg-teacher-hover)}.page-loading{padding:40px;color:var(--text-teacher-secondary);font-size:14px}.header-actions{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:32px}.page-title h1{font-size:1.5rem;font-weight:600}.avatar{width:36px;height:36px;border-radius:50%;background-color:#e0e7ff;color:var(--accent-teacher-purple);display:flex;align-items:center;justify-content:center;font-size:.875rem;font-weight:600;flex-shrink:0}.avatar img{width:100%;height:100%;border-radius:50%;object-fit:cover}.practice-layout-container{display:grid;grid-template-columns:380px 1fr;width:100vw;height:100vh;background-color:var(--bg-practice-canvas);color:var(--text-student-primary)}.panel-context{background-color:var(--bg-practice-canvas);border-right:1px solid rgba(0,0,0,.03);padding:var(--space-xl);display:flex;flex-direction:column;overflow-y:auto;gap:var(--space-xl)}.panel-workspace{background-color:var(--bg-practice-surface);display:flex;flex-direction:column;padding:var(--space-lg) var(--space-xl);gap:var(--space-lg);position:relative;border-top-left-radius:var(--radius-lg);border-bottom-left-radius:var(--radius-lg);box-shadow:-10px 0 30px #00000005;margin:var(--space-sm) var(--space-sm) var(--space-sm) 0;height:calc(100% - 16px);overflow-y:auto}.btn{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:var(--radius-md);font-size:.875rem;font-weight:500;cursor:pointer;border:1px solid transparent;transition:all .15s ease;justify-content:center}.btn-primary{background:var(--text-teacher-primary);color:#fff;border:1px solid var(--text-teacher-primary)}.btn-primary:hover{background:#2d3748}.btn-secondary{background:#fff;border:1px solid var(--border-teacher-subtle);color:var(--text-teacher-primary);box-shadow:0 1px 2px #0000000d}.btn-outline{background:transparent;border:1px solid var(--border-teacher-subtle);color:var(--text-teacher-primary)}.btn-outline:hover{background:var(--bg-teacher-subtle)}.auth-container{display:flex;flex-direction:column;gap:24px}.auth-steps{text-align:center;font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--text-student-secondary);background:var(--bg-student-pill);border:1px solid var(--border-student-color);padding:4px 12px;border-radius:20px;align-self:center}.auth-header{text-align:center}.auth-header h1{font-family:var(--font-serif);font-size:28px;color:var(--text-student-primary);margin-bottom:8px}.auth-header p{color:var(--text-student-secondary);font-size:14px}.auth-form{display:flex;flex-direction:column;gap:16px}.form-group{display:flex;flex-direction:column;gap:8px}.form-group label{font-size:13px;font-weight:500;color:var(--text-student-primary)}.form-group input,.form-group select{padding:10px 12px;border:1px solid var(--border-student-color);border-radius:var(--radius-sm);font-family:var(--font-sans);font-size:14px;transition:border-color .2s}.form-group input:focus,.form-group select:focus{border-color:var(--text-student-primary);outline:none}.role-selector{display:flex;gap:8px}.role-selector button{flex:1;padding:8px 0;border:1px solid var(--border-student-color);background:#fff;border-radius:var(--radius-sm);cursor:pointer;font-size:14px;transition:all .2s}.role-selector button.active{background:var(--text-student-primary);color:#fff;border-color:var(--text-student-primary)}.w-full{width:100%;margin-top:8px;padding:12px 0}.auth-footer{text-align:center;font-size:13px;color:var(--text-student-secondary);margin-top:8px}.auth-footer a{color:var(--text-student-primary);font-weight:500}.auth-footer a:hover{text-decoration:underline}.auth-error{padding:10px 12px;background:#fee2e2;border:1px solid #FECACA;border-radius:var(--radius-sm);font-size:13px;color:#991b1b}.student-dashboard{display:flex;flex-direction:column;gap:40px}header{display:flex;flex-direction:column;gap:var(--space-md);border-bottom:var(--border-student-style);padding-bottom:var(--space-md)}.hero-top{display:flex;justify-content:space-between;align-items:flex-end}.serif-title{font-family:var(--font-serif);font-size:32px;font-weight:600;color:var(--text-student-primary);margin-bottom:8px}.subtitle{color:var(--text-student-secondary);font-size:14px}.streak-badge{display:flex;align-items:center;gap:8px;background-color:var(--bg-student-sidebar);padding:8px 16px;border-radius:var(--radius-md);font-size:14px;font-weight:500;color:var(--text-student-primary)}.streak-fire{color:#f59e0b}.tabs{display:flex;gap:var(--space-sm);margin-top:10px}.tab{padding:6px 12px;font-size:14px;color:var(--text-student-secondary);cursor:pointer;border-radius:var(--radius-sm);transition:all .2s}.tab.active{background-color:var(--bg-student-pill);color:var(--text-student-primary);font-weight:500}.dash-row{display:flex;gap:40px;align-items:flex-start}.dash-section{display:flex;flex-direction:column}.dash-section--lg{flex:3;min-width:0}.dash-section--sm{flex:2;min-width:0}.section-title{font-size:14px;font-weight:600;margin-bottom:var(--space-md);color:var(--text-student-primary)}.roadmap-list{display:flex;flex-direction:column}.roadmap-item{display:flex;justify-content:space-between;align-items:center;padding:20px 0;border-bottom:var(--border-student-style)}.roadmap-item:first-child{padding-top:0}.roadmap-info{display:flex;gap:var(--space-md);align-items:center}.module-icon{width:40px;height:40px;background-color:var(--bg-student-sidebar);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;color:var(--text-student-secondary)}.module-icon.completed{background-color:var(--accent-student-green-bg);color:var(--accent-student-green)}.module-icon.in-progress{background-color:var(--text-student-primary);color:#fff}.module-text h3{font-size:15px;font-weight:500;margin-bottom:4px}.module-text p{font-size:13px;color:var(--text-student-secondary)}.status-pill{font-size:12px;padding:4px 10px;border-radius:var(--radius-sm);background-color:var(--bg-student-sidebar);color:var(--text-student-secondary)}.status-pill.active{background-color:var(--text-student-primary);color:#fff}.skills-container{display:flex;flex-direction:column;gap:24px}.skill-item{display:flex;flex-direction:column;gap:8px}.skill-header{display:flex;justify-content:space-between;font-size:13px;color:var(--text-student-secondary)}.skill-bar-bg{height:8px;background-color:var(--bg-student-sidebar);border-radius:4px;overflow:hidden;width:100%}.skill-bar-fill{height:100%;background-color:var(--text-student-primary);border-radius:4px}.skill-bar-fill.weak{background-color:#f87171}.achievement-row{display:flex;flex-wrap:wrap;gap:16px}.achievement-row .badge-card{width:110px;min-height:100px;height:auto;aspect-ratio:unset;flex-shrink:0}.badge-card{background-color:var(--bg-student-sidebar);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;flex-direction:column;gap:6px;padding:14px 8px;border:1px solid transparent;transition:all .2s;cursor:pointer}.badge-card--earned{background:#f0fdf4;border-color:#bbf7d0}.badge-card--locked{opacity:.7}.badge-card:hover{border-color:var(--border-student-color);background-color:#fff;box-shadow:0 4px 12px #0000000d;opacity:1}.badge-icon{font-size:24px}.badge-name{font-size:11px;color:var(--text-student-secondary);text-align:center;font-weight:500}.badge-progress{width:100%;display:flex;flex-direction:column;gap:3px;margin-top:4px}.badge-progress-bar{width:100%;height:4px;background:var(--border-student-color);border-radius:2px;overflow:hidden}.badge-progress-fill{height:100%;background:var(--text-student-primary);border-radius:2px;transition:width .3s ease}.badge-progress-label{font-size:10px;color:var(--text-student-tertiary);text-align:center}.section-subtitle{font-size:13px;font-weight:400;color:var(--text-student-secondary)}.task-list{display:flex;flex-direction:column;gap:12px}.task-card{border:var(--border-student-solid);border-radius:var(--radius-md);padding:12px 16px;display:flex;align-items:center;gap:12px;background:#fff;transition:border-color .2s}.task-card:hover{border-color:var(--text-student-secondary)}.check-circle{width:18px;height:18px;border:1px solid var(--border-student-color);border-radius:50%;flex-shrink:0}.task-text{font-size:14px;color:var(--text-student-primary);flex:1}.task-due{font-size:12px;color:var(--text-student-secondary)}.quick-links{display:flex;flex-direction:column;gap:8px}.quick-links--horizontal{flex-direction:row;flex-wrap:wrap;gap:12px}.quick-links--horizontal .quick-link-btn{flex:1;min-width:160px;justify-content:center}.quick-link-btn{display:flex;align-items:center;gap:10px;padding:10px 14px;border:var(--border-student-solid);border-radius:var(--radius-md);background:#fff;text-decoration:none;color:var(--text-student-primary);font-size:14px;transition:all .15s}.quick-link-btn:hover{border-color:var(--text-student-primary);background:var(--bg-student-sidebar)}.empty-hint{display:flex;align-items:center;gap:12px;padding:24px;background:var(--bg-student-sidebar);border-radius:var(--radius-md);color:var(--text-student-secondary);font-size:14px}.empty-hint a{color:var(--text-student-primary);font-weight:500}.roadmap-link{text-decoration:none;display:flex}.check-circle.done{background:var(--accent-student-green, #22C55E);border-color:var(--accent-student-green, #22C55E);color:#fff;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700}.check-circle.failed{background:#fee2e2;border-color:#fecaca;color:#dc2626;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700}.task-card-link{text-decoration:none;cursor:pointer}.task-status-badge{font-size:11px;font-weight:600;padding:3px 10px;border-radius:99px;flex-shrink:0}.task-status-badge.passed{background:#dcfce7;color:#166534}.task-status-badge.failed{background:#fee2e2;color:#991b1b}@media(max-width:1024px){.dash-row{flex-direction:column;gap:32px}.dash-section--lg,.dash-section--sm{flex:none;width:100%}.quick-links--horizontal .quick-link-btn{min-width:140px}}.onboarding-container{display:flex;justify-content:center;align-items:flex-start;min-height:100vh;background-color:var(--bg-student-body);padding:var(--space-xl);overflow-y:auto}.onboarding-content{width:100%;max-width:600px;display:flex;flex-direction:column;gap:var(--space-md)}.onboarding-content.screening{max-width:800px}.onboarding-content h1{font-family:var(--font-serif);font-size:32px;color:var(--text-student-primary);margin-bottom:4px}.subtitle{color:var(--text-student-secondary);font-size:16px;margin-bottom:var(--space-lg)}.level-options{display:flex;flex-direction:column;gap:var(--space-sm)}.level-card{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-md);border:var(--border-student-solid);border-radius:var(--radius-lg);cursor:pointer;transition:all .2s ease;background-color:#fff}.level-card:hover{border-color:var(--text-student-secondary)}.level-card.active{border-color:var(--text-student-primary);background-color:var(--bg-student-pill)}.level-icon{font-size:24px}.level-info h3{font-size:18px;font-weight:500;color:var(--text-student-primary);margin-bottom:4px}.level-info p{font-size:14px;color:var(--text-student-secondary)}.continue-btn{margin-top:var(--space-lg);align-self:flex-start;padding:12px 24px;font-size:16px}.continue-btn:disabled{opacity:.5;cursor:not-allowed}.screening-placeholder{border:1px dashed var(--border-student-color);border-radius:var(--radius-lg);padding:var(--space-xl);text-align:center;background-color:var(--bg-student-sidebar)}.test-icon{font-size:48px;margin-bottom:var(--space-md)}.screening-placeholder h3{font-size:20px;margin-bottom:8px}.screening-placeholder p{color:var(--text-student-secondary);margin-bottom:var(--space-lg)}.test-tasks{text-align:left;background:#fff;padding:var(--space-md);border-radius:var(--radius-md);border:var(--border-student-solid)}.test-tasks ul{list-style-type:none;padding:0;display:flex;flex-direction:column;gap:8px}.test-tasks li{padding:12px;background:var(--bg-student-sidebar);border-radius:var(--radius-sm);font-size:14px}.mt-6{margin-top:24px}.onboarding-step-badge{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--text-student-secondary);background:var(--bg-student-pill);border:1px solid var(--border-student-color);padding:4px 12px;border-radius:20px;align-self:flex-start}.goal-options{display:flex;flex-direction:column;gap:var(--space-sm)}.goal-card{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-md);border:var(--border-student-solid);border-radius:var(--radius-lg);cursor:pointer;transition:all .15s ease;background:#fff}.goal-card:hover{border-color:var(--text-student-primary);background:var(--bg-student-pill)}.goal-card.active{border-color:var(--text-student-primary);background:var(--bg-student-pill);box-shadow:0 0 0 2px var(--text-student-primary)}.goal-icon{font-size:28px;flex-shrink:0;width:40px;text-align:center}.goal-info{flex:1}.goal-info h3{font-size:15px;font-weight:600;color:var(--text-student-primary);margin-bottom:2px}.goal-info p{font-size:13px;color:var(--text-student-secondary);line-height:1.4}.goal-check{font-size:16px;font-weight:700;color:var(--text-student-primary);width:20px;text-align:center;flex-shrink:0}.level-result-banner{display:flex;align-items:flex-start;gap:var(--space-md);padding:var(--space-lg);border:2px solid;border-radius:var(--radius-lg)}.level-result-emoji{font-size:32px;flex-shrink:0}.level-result-title{font-size:18px;font-weight:700;margin-bottom:4px}.level-result-desc{font-size:14px;color:var(--text-student-secondary);line-height:1.5}.level-tasks-section{display:flex;flex-direction:column;gap:var(--space-sm)}.level-tasks-heading{font-family:var(--font-serif);font-size:22px;font-weight:500;color:var(--text-student-primary)}.level-tasks-subheading{font-size:14px;color:var(--text-student-secondary);margin-top:-4px}.level-tasks-loading,.level-tasks-empty{font-size:14px;color:var(--text-student-secondary);padding:var(--space-md);text-align:center;background:var(--bg-student-pill);border-radius:var(--radius-md);border:1px dashed var(--border-student-color)}.level-tasks-list{display:flex;flex-direction:column;gap:8px}.level-task-card{display:flex;align-items:center;justify-content:space-between;gap:var(--space-md);padding:14px 16px;background:#fff;border:1px solid var(--border-student-color);border-radius:var(--radius-md);transition:border-color .15s ease}.level-task-card:hover{border-color:var(--text-student-primary)}.level-task-info{flex:1;min-width:0}.level-task-title{font-size:14px;font-weight:600;color:var(--text-student-primary);margin-bottom:2px}.level-task-desc{font-size:12px;color:var(--text-student-secondary);line-height:1.4;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.screening-intro-tasks{display:flex;flex-direction:column;gap:8px;margin-bottom:var(--space-md)}.intro-task-item{display:flex;align-items:center;gap:12px;padding:12px 16px;background:#fff;border:1px solid var(--border-student-color);border-radius:var(--radius-md)}.intro-task-num{display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--bg-student-pill);font-size:13px;font-weight:600;color:var(--text-student-primary);flex-shrink:0}.intro-task-info{display:flex;align-items:center;gap:8px;flex:1}.intro-task-info strong{font-size:14px;color:var(--text-student-primary)}.task-type-badge{font-size:11px;padding:2px 8px;border-radius:10px;font-weight:500;text-transform:uppercase;letter-spacing:.04em}.task-type-badge.type-code{background:#e0f2fe;color:#0369a1}.task-type-badge.type-debug{background:#fef3c7;color:#92400e}.task-type-badge.type-test{background:#f0fdf4;color:#166534}.screening-note{padding:12px 16px;background:#fafafa;border:1px dashed 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h1{font-family:var(--font-serif);font-size:32px;margin-bottom:8px}.back-btn{background:none;border:none;font-size:13px;color:var(--text-student-secondary);cursor:pointer;padding:0;margin-bottom:8px}.back-btn:hover{color:var(--text-student-primary)}.topics-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}.topic-card{display:flex;flex-direction:column;align-items:center;gap:10px;padding:28px 20px 20px;border:var(--border-student-solid);border-radius:var(--radius-lg);background:#fff;cursor:pointer;transition:all .2s;text-align:center}.topic-card:hover{border-color:var(--text-student-primary);box-shadow:0 4px 12px #0000000f;transform:translateY(-2px)}.topic-card-icon{font-size:32px}.topic-card-title{font-size:15px;font-weight:600;color:var(--text-student-primary)}.topic-card-count{font-size:12px;color:var(--text-student-secondary)}.topic-card-bar{width:100%;height:4px;background:var(--bg-student-sidebar);border-radius:2px;overflow:hidden}.topic-card-fill{height:100%;background:var(--text-student-primary);border-radius:2px;transition:width .3s}.task-filters{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.filter-group{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.filter-btn{padding:6px 16px;border:1px solid var(--border-student-color);background:#fff;border-radius:99px;font-size:13px;cursor:pointer;transition:all .15s;color:var(--text-student-secondary)}.filter-btn.active{background:var(--text-student-primary);color:#fff;border-color:var(--text-student-primary)}.filter-btn:hover:not(.active){background:var(--bg-student-sidebar);color:var(--text-student-primary)}.task-count{margin-left:auto;font-size:13px;color:var(--text-student-secondary)}.task-rows{display:flex;flex-direction:column;gap:8px}.task-row-card{display:flex;align-items:center;gap:16px;padding:16px 20px;border:var(--border-student-solid);border-radius:var(--radius-md);background:#fff;text-decoration:none;color:var(--text-student-primary);transition:all .15s}.task-row-card:hover{border-color:var(--text-student-primary);box-shadow:0 2px 8px #0000000a}.task-row-card.solved{background:#fafff9;border-color:#bbf7d0}.task-row-status{flex-shrink:0}.icon-solved{color:#22c55e}.icon-attempted{color:#f59e0b}.icon-new{color:var(--text-student-secondary)}.task-row-body{flex:1;min-width:0}.task-row-title{font-size:14px;font-weight:600;margin-bottom:4px}.task-row-desc{font-size:12px;color:var(--text-student-secondary);line-height:1.4;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.task-row-meta{display:flex;gap:8px;align-items:center;flex-shrink:0}.difficulty-badge{font-size:11px;font-weight:600;padding:3px 10px;border-radius:99px;text-transform:capitalize}.attempts-badge{font-size:11px;padding:3px 10px;border-radius:99px;background:var(--bg-student-sidebar);color:var(--text-student-secondary)}.task-row-arrow{color:var(--text-student-secondary);flex-shrink:0}.tasks-empty{display:flex;flex-direction:column;align-items:center;gap:12px;padding:60px;text-align:center;color:var(--text-student-secondary)}.join-group-page{display:flex;align-items:center;justify-content:center;min-height:60vh;padding:40px 24px}.join-group-card{width:100%;max-width:420px;display:flex;flex-direction:column;gap:20px;text-align:center}.join-group-card h1{font-family:var(--font-serif);font-size:28px}.join-form{display:flex;flex-direction:column;gap:12px;text-align:left}.join-form input{padding:10px 14px;border:var(--border-student-solid);border-radius:var(--radius-md);font-size:15px;font-family:var(--font-mono);text-align:center;letter-spacing:.08em;transition:border-color .2s}.join-form input:focus{outline:none;border-color:var(--text-student-primary)}.join-btn{width:100%;padding:12px 0;margin-top:4px}.join-error{padding:10px 12px;background:#fee2e2;border:1px solid #FECACA;border-radius:var(--radius-sm);font-size:13px;color:#991b1b}.join-success{padding:10px 12px;background:#dcfce7;border:1px solid #BBF7D0;border-radius:var(--radius-sm);font-size:13px;color:#166534}.card{background:var(--bg-teacher-card);border-radius:var(--radius-lg);border:1px solid var(--border-teacher-subtle);box-shadow:var(--shadow-teacher-card);overflow:hidden;display:flex;flex-direction:column}.card-header{padding:20px 24px;border-bottom:1px solid var(--border-teacher-subtle);display:flex;justify-content:space-between;align-items:center}.card-header h3{font-size:1rem;color:var(--text-teacher-primary);font-weight:600}.card-body{padding:0}.card-body-padded{padding:24px}.progress-wrapper{width:100px;text-align:right;display:flex;flex-direction:column;justify-content:center}.progress-track{height:6px;background:var(--bg-teacher-hover);border-radius:var(--radius-pill);margin-top:6px;overflow:hidden;width:100%}.progress-fill{height:100%;border-radius:var(--radius-pill);transition:width .3s ease}.progress-label{font-size:.75rem;color:var(--text-teacher-secondary);display:block}.teacher-dashboard{display:flex;flex-direction:column;gap:24px}.dashboard-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.metric-sub{font-size:12px;color:var(--text-teacher-secondary);margin-top:4px}.list-row-icon{color:var(--text-teacher-secondary);flex-shrink:0;width:32px;height:32px;background:var(--bg-teacher-hover);border-radius:8px;display:flex;align-items:center;justify-content:center}.list-row-content h4{font-size:14px;font-weight:500;color:var(--text-teacher-primary)}.list-row-content p{font-size:12px;color:var(--text-teacher-secondary);margin-top:2px}.header-actions{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:8px}.page-title h1{font-size:1.5rem;margin-bottom:4px;font-weight:600}.text-teacher-secondary{color:var(--text-teacher-secondary)}.dashboard-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;max-width:1200px}.metric-card{grid-column:span 4;padding:24px}.metric-label{font-size:.875rem;color:var(--text-teacher-secondary);margin-bottom:8px;display:flex;justify-content:space-between}.metric-value{font-size:2rem;font-weight:600;color:var(--text-teacher-primary);line-height:1}.metric-trend{font-size:.75rem;padding:4px 8px;border-radius:var(--radius-pill);background:var(--bg-teacher-hover);color:var(--text-teacher-secondary);font-weight:500}.trend-up{color:#059669;background:#ecfdf5}.section-roster{grid-column:span 8}.list-row{display:flex;align-items:center;padding:16px 24px;border-bottom:1px solid var(--border-teacher-subtle);transition:background-color .15s ease;cursor:pointer;gap:16px}.list-row:last-child{border-bottom:none}.list-row:hover{background-color:var(--bg-teacher-hover)}.list-row-content{flex:1}.user-info h4{font-size:.875rem;color:var(--text-teacher-primary);font-weight:500;line-height:1.3}.user-info p{font-size:.8125rem;color:var(--text-teacher-secondary)}.section-feed{grid-column:span 4}.feed-item{display:flex;gap:12px;padding:16px 24px;border-bottom:1px solid var(--border-teacher-subtle)}.feed-icon{width:32px;height:32px;border-radius:50%;background:var(--bg-teacher-subtle);border:1px solid var(--border-teacher-subtle);display:flex;align-items:center;justify-content:center;color:var(--text-teacher-secondary);flex-shrink:0}.feed-content{font-size:.875rem}.feed-content span{font-weight:500;color:var(--text-teacher-primary)}.feed-time{display:block;font-size:.75rem;color:var(--text-teacher-tertiary);margin-top:4px}@media(max-width:1024px){.dashboard-grid{grid-template-columns:repeat(1,1fr)}.metric-card,.section-roster,.section-feed{grid-column:span 1}}.dash-student-table{width:100%;overflow-x:auto}.dash-table-header,.dash-table-row{display:grid;grid-template-columns:2fr 1.5fr 1fr repeat(3,1fr);gap:8px;padding:10px 24px;align-items:center;font-size:13px}.dash-table-header{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--text-teacher-secondary);border-bottom:1px solid var(--border-teacher-subtle);background:var(--bg-teacher-hover)}.dash-table-row{border-bottom:1px solid var(--border-teacher-subtle);transition:background .15s}.dash-table-row:last-child{border-bottom:none}.dash-table-row:hover{background:var(--bg-teacher-hover)}.dash-student-name{font-size:13px;font-weight:500;color:var(--text-teacher-primary)}.dash-student-email{font-size:11px;color:var(--text-teacher-secondary);margin-top:1px}.col-group{font-size:12px;color:var(--text-teacher-secondary)}.col-num{font-size:13px;text-align:center}.col-level{font-size:13px}.level-chip{font-size:11px;padding:2px 8px;border-radius:10px;font-weight:500;background:var(--bg-teacher-hover);color:var(--text-teacher-secondary)}.level-chip.level-beginner{background:#dcfce7;color:#166534}.level-chip.level-intermediate{background:#fef9c3;color:#854d0e}.level-chip.level-advanced{background:#fee2e2;color:#991b1b}.score-chip{font-size:11px;padding:2px 8px;border-radius:10px;font-weight:600}.teacher-groups{display:flex;flex-direction:column;gap:32px}.group-stats-link{display:flex;align-items:center;gap:8px;padding:8px 14px;border:1px solid var(--border-teacher-color);border-radius:var(--radius-md);font-size:13px;text-decoration:none;color:var(--text-teacher-primary);transition:all .15s;margin-top:4px}.group-stats-link:hover{border-color:var(--text-teacher-primary);background:var(--bg-teacher-sidebar)}.create-group-card{background:var(--bg-teacher-card);border:1px solid var(--border-teacher-subtle);border-radius:12px;padding:20px 24px}.create-group-form{display:flex;gap:10px;align-items:center}.create-group-form input{flex:1;padding:9px 12px;border:1px solid var(--border-teacher-subtle);border-radius:8px;font-size:14px;font-family:inherit}.create-group-form input:focus{border-color:var(--text-teacher-primary);outline:none}.groups-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}.group-card{display:flex;flex-direction:column}.group-card-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:16px}.group-card-header h3{font-size:1.125rem;font-weight:600;color:var(--text-teacher-primary);margin:0}.icon-btn{background:transparent;border:none;color:var(--text-teacher-secondary);cursor:pointer;padding:4px;border-radius:4px;display:flex;align-items:center;justify-content:center}.icon-btn:hover{background:var(--bg-teacher-hover);color:var(--text-teacher-primary)}.group-stats{display:flex;gap:16px;margin-bottom:24px}.stat{display:flex;align-items:center;gap:8px;font-size:.875rem;color:var(--text-teacher-primary);font-weight:500}.invite-section{background:var(--bg-teacher-subtle);border-radius:var(--radius-md);padding:12px;border:1px solid var(--border-teacher-subtle)}.invite-label{font-size:.75rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-teacher-secondary);font-weight:600;margin-bottom:8px}.invite-box{display:flex;align-items:center;justify-content:space-between;gap:12px}.invite-code{font-family:var(--font-mono);font-size:.875rem;color:var(--text-teacher-primary);background:#fff;padding:4px 8px;border-radius:4px;border:1px solid var(--border-teacher-subtle);flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.form-group input,.form-group textarea{padding:9px 12px;border:1px solid var(--border-teacher-subtle);border-radius:8px;font-size:14px;font-family:inherit}.form-group input:focus,.form-group 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var(--border-teacher-subtle);color:var(--text-teacher-secondary)}.group-card-actions{display:flex;gap:4px;align-items:center}.group-edit-form{display:flex;flex-direction:column}.group-edit-input{padding:8px 12px;border:1px solid var(--border-teacher-subtle);border-radius:8px;font-size:14px;font-family:inherit;font-weight:600}.group-edit-input:focus{border-color:var(--text-teacher-primary);outline:none}.teacher-courses{display:flex;flex-direction:column;gap:32px}.create-course-card{background:var(--bg-teacher-card);border:1px solid var(--border-teacher-subtle);border-radius:12px;padding:24px;box-shadow:var(--shadow-teacher-card)}.create-course-card h3{font-size:16px;font-weight:600;margin-bottom:20px}.form-group{display:flex;flex-direction:column;gap:6px}.form-actions{display:flex;gap:12px;justify-content:flex-end}.courses-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}.course-card{background:var(--bg-teacher-card);border:1px solid var(--border-teacher-subtle);border-radius:12px;padding:20px;display:flex;flex-direction:column;gap:12px;box-shadow:var(--shadow-teacher-card);transition:box-shadow .2s}.course-card:hover{box-shadow:0 8px 24px #00000014}.course-card-top{display:flex;justify-content:space-between;align-items:flex-start}.course-card-icon{width:40px;height:40px;background:var(--bg-teacher-hover);border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--text-teacher-secondary)}.course-status{font-size:11px;font-weight:600;padding:4px 10px;border-radius:99px}.course-status.published{background:#dcfce7;color:#166534}.course-status.draft{background:var(--bg-teacher-hover);color:var(--text-teacher-secondary)}.course-card-title{font-size:15px;font-weight:600;line-height:1.3}.course-card-desc{font-size:13px;color:var(--text-teacher-secondary);line-height:1.5;flex:1}.course-card-actions{display:flex;gap:8px;flex-wrap:wrap;padding-top:8px;border-top:1px solid var(--border-teacher-subtle)}.btn{display:inline-flex;align-items:center;gap:6px;padding:7px 12px;border-radius:8px;font-size:13px;font-weight:500;cursor:pointer;border:1px solid transparent;text-decoration:none;transition:all .15s}.btn-sm{padding:5px 10px;font-size:12px}.btn-secondary{background:#fff;border-color:var(--border-teacher-subtle);color:var(--text-teacher-primary)}.btn-secondary:hover{background:var(--bg-teacher-hover)}.btn-primary{background:var(--text-teacher-primary);color:#fff;border-color:var(--text-teacher-primary)}.btn-primary:hover{background:#1f2937}.btn-danger{background:#fff;border-color:#fecaca;color:#dc2626}.btn-danger:hover{background:#fef2f2}.courses-empty{grid-column:1 / -1;display:flex;flex-direction:column;align-items:center;gap:12px;padding:60px;text-align:center;color:var(--text-teacher-secondary)}.courses-empty h3{font-size:16px;color:var(--text-teacher-primary)}.group-checkboxes{display:flex;flex-direction:column;gap:8px;max-height:160px;overflow-y:auto;padding:10px;border:1px solid var(--border-teacher-subtle);border-radius:8px;background:var(--bg-teacher-subtle)}.group-checkbox-item{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-teacher-primary);cursor:pointer;padding:4px 0}.group-checkbox-item input[type=checkbox]{width:15px;height:15px;accent-color:var(--text-teacher-primary);cursor:pointer}.course-builder{display:flex;flex-direction:column;gap:32px}.builder-modules{display:flex;flex-direction:column;gap:12px}.builder-module{background:var(--bg-teacher-card);border:1px solid var(--border-teacher-subtle);border-radius:12px;overflow:hidden}.module-header{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;cursor:pointer;-webkit-user-select:none;user-select:none;transition:background 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.15s}.lesson-item:hover{background:var(--bg-teacher-hover)}.lesson-item-title{flex:1;font-size:13px;color:var(--text-teacher-primary);text-decoration:none}.lesson-item-title:hover{text-decoration:underline}.add-lesson-btn{display:flex;align-items:center;gap:6px;padding:7px 12px;background:none;border:1px dashed var(--border-teacher-subtle);border-radius:8px;font-size:13px;color:var(--text-teacher-secondary);cursor:pointer;transition:all .15s;margin-top:4px}.add-lesson-btn:hover{border-color:var(--text-teacher-primary);color:var(--text-teacher-primary);background:var(--bg-teacher-hover)}.inline-add-form{display:flex;gap:8px;align-items:center;margin-top:4px}.inline-add-form input{flex:1;padding:7px 10px;border:1px solid var(--border-teacher-subtle);border-radius:8px;font-size:13px;font-family:inherit}.inline-add-form input:focus{border-color:var(--text-teacher-primary);outline:none}.new-module-form{background:var(--bg-teacher-card);border:1px dashed 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8px;border-radius:99px;text-transform:capitalize}.type-badge{font-size:11px;color:var(--text-teacher-secondary);background:var(--bg-teacher-hover);padding:2px 8px;border-radius:99px}.task-row-actions{display:flex;gap:6px}.icon-btn{background:none;border:none;color:var(--text-teacher-secondary);padding:6px;cursor:pointer;border-radius:6px;display:flex;align-items:center;justify-content:center;transition:all .15s;text-decoration:none}.icon-btn:hover{color:var(--text-teacher-primary);background:var(--bg-teacher-hover)}.icon-btn-danger{background:none;border:none;color:var(--text-teacher-secondary);padding:6px;cursor:pointer;border-radius:6px;display:flex;align-items:center;justify-content:center;transition:color .15s}.tasks-empty{display:flex;flex-direction:column;align-items:center;gap:12px;padding:60px;text-align:center;color:var(--text-teacher-secondary)}.task-creator{display:flex;flex-direction:column;gap:32px;max-width:900px}.task-form{display:flex;flex-direction:column;gap:20px;background:var(--bg-teacher-card);border:1px solid var(--border-teacher-subtle);border-radius:12px;padding:28px}.form-row{display:flex;gap:16px;align-items:flex-start}.form-group.flex-2{flex:2}.form-group input,.form-group textarea,.form-group select{padding:8px 12px;border:1px solid var(--border-teacher-subtle);border-radius:8px;font-size:14px;font-family:inherit;transition:border-color .15s;resize:vertical}.form-group input:focus,.form-group textarea:focus,.form-group select:focus{border-color:var(--text-teacher-primary);outline:none}.code-textarea{font-family:var(--font-mono)!important;font-size:13px!important;line-height:1.6}.field-hint{font-size:12px;color:var(--text-teacher-secondary)}.form-submit{display:flex;gap:12px;justify-content:flex-end;padding-top:8px;border-top:1px solid var(--border-teacher-subtle)}.lesson-editor{display:flex;flex-direction:column;gap:32px}.lesson-editor-body{display:flex;flex-direction:column;gap:28px}.editor-section{display:flex;flex-direction:column;gap:8px}.editor-label{font-size:13px;font-weight:600;color:var(--text-teacher-primary)}.editor-label .hint{font-weight:400;color:var(--text-teacher-secondary);margin-left:8px}.editor-title-input{padding:10px 14px;border:1px solid var(--border-teacher-color);border-radius:var(--radius-md);font-size:16px;font-family:var(--font-sans);color:var(--text-teacher-primary);background:#fff;transition:border-color .2s}.editor-title-input:focus{outline:none;border-color:var(--text-teacher-primary)}.editor-content{padding:14px;border:1px solid var(--border-teacher-color);border-radius:var(--radius-md);font-family:var(--font-mono);font-size:13px;line-height:1.6;color:var(--text-teacher-primary);background:#fafafa;resize:vertical;transition:border-color .2s}.editor-content:focus{outline:none;border-color:var(--text-teacher-primary);background:#fff}.tasks-header{display:flex;justify-content:space-between;align-items:center}.tasks-empty-hint{padding:20px;background:var(--bg-teacher-sidebar);border-radius:var(--radius-md);font-size:13px;color:var(--text-teacher-secondary);text-align:center}.lesson-tasks-list{display:flex;flex-direction:column;gap:8px}.lesson-task-row{display:flex;align-items:center;gap:10px;padding:10px 14px;border:1px solid var(--border-teacher-color);border-radius:var(--radius-md);background:#fff;color:var(--text-teacher-secondary)}.lesson-task-title{flex:1;font-size:14px;color:var(--text-teacher-primary)}.difficulty-chip{font-size:11px;padding:2px 8px;border-radius:99px;background:var(--bg-teacher-sidebar);color:var(--text-teacher-secondary);text-transform:capitalize}.btn-outline{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border:1px solid var(--border-teacher-color);border-radius:var(--radius-md);font-size:13px;text-decoration:none;color:var(--text-teacher-primary);background:#fff;transition:all .15s}.btn-outline:hover{border-color:var(--text-teacher-primary);background:var(--bg-teacher-sidebar)}.btn-sm{padding:4px 10px;font-size:12px}.group-stats{display:flex;flex-direction:column;gap:32px}.stats-summary{display:flex;gap:16px}.summary-card{flex:1;display:flex;flex-direction:column;align-items:center;gap:8px;padding:24px;background:#fff;border:1px solid var(--border-teacher-color);border-radius:var(--radius-lg);color:var(--text-teacher-secondary)}.summary-value{font-size:28px;font-weight:600;color:var(--text-teacher-primary);font-family:var(--font-serif)}.summary-label{font-size:12px;color:var(--text-teacher-secondary)}.stats-empty{padding:40px;text-align:center;color:var(--text-teacher-secondary);font-size:14px;background:var(--bg-teacher-sidebar);border-radius:var(--radius-md)}.students-table{display:flex;flex-direction:column;border:1px solid var(--border-teacher-color);border-radius:var(--radius-md);overflow:hidden}.table-header,.table-row{display:flex;align-items:center;padding:12px 20px;gap:16px}.table-header{background:var(--bg-teacher-sidebar);font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--text-teacher-secondary)}.table-row{background:#fff;border-top:1px solid var(--border-teacher-color);font-size:14px;transition:background .1s}.table-row:hover{background:#fafafa}.col-name{flex:2;min-width:0}.col-level{flex:1}.col-num{flex:1;text-align:center}.student-name{font-weight:500;color:var(--text-teacher-primary)}.student-email{font-size:12px;color:var(--text-teacher-secondary)}.level-chip{display:inline-block;font-size:11px;padding:2px 10px;border-radius:99px;background:var(--bg-teacher-sidebar);color:var(--text-teacher-secondary);text-transform:capitalize}.score-chip{display:inline-block;font-size:12px;font-weight:600;padding:2px 10px;border-radius:99px}.score-chip.good{background:#dcfce7;color:#166534}.score-chip.mid{background:#fef9c3;color:#854d0e}.score-chip.low{background:#fee2e2;color:#991b1b}.profile-page{display:flex;flex-direction:column;gap:24px;max-width:560px}.profile-title{font-size:1.5rem;font-weight:600;margin:0}.profile-avatar-block{display:flex;align-items:center;gap:20px}.profile-avatar-wrap{position:relative;width:80px;height:80px;flex-shrink:0}.profile-avatar-img{width:80px;height:80px;border-radius:50%;object-fit:cover;border:2px solid var(--border-student-color, #e5e7eb)}.profile-avatar-initials{width:80px;height:80px;border-radius:50%;background-color:#e0e7ff;color:#4f46e5;display:flex;align-items:center;justify-content:center;font-size:1.5rem;font-weight:600}.profile-avatar-btn{position:absolute;bottom:0;right:0;width:26px;height:26px;border-radius:50%;background:var(--text-student-primary, #111);color:#fff;border:none;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:opacity .15s}.profile-avatar-btn:hover{opacity:.8}.profile-avatar-btn:disabled{opacity:.5;cursor:not-allowed}.profile-avatar-info{display:flex;flex-direction:column;gap:4px}.profile-avatar-name{font-size:1.1rem;font-weight:600}.profile-avatar-role{font-size:.85rem;color:var(--text-student-secondary, #6b7280)}.profile-card{background:var(--bg-student-card, #fff);border:var(--border-student-solid, 1px solid #e5e7eb);border-radius:var(--radius-md, 10px);padding:24px;display:flex;flex-direction:column;gap:20px}.profile-card-title{font-size:.95rem;font-weight:600;display:flex;align-items:center;gap:8px}.profile-form{display:flex;flex-direction:column;gap:16px}.profile-field{display:flex;flex-direction:column;gap:6px}.profile-field label{font-size:.8rem;font-weight:500;color:var(--text-student-secondary, #6b7280);text-transform:uppercase;letter-spacing:.04em}.profile-field input{padding:9px 12px;border:var(--border-student-solid, 1px solid #e5e7eb);border-radius:var(--radius-sm, 6px);font-size:.875rem;background:var(--bg-student-body, #f9fafb);color:var(--text-student-primary, #111);transition:border-color .15s;outline:none}.profile-field input:focus{border-color:var(--text-student-primary, #111)}.profile-readonly{background:var(--bg-student-sidebar, #f3f4f6)!important;cursor:default;color:var(--text-student-secondary, #6b7280)!important}.profile-save-btn{display:flex;align-items:center;gap:8px;padding:9px 18px;background:var(--text-student-primary, #111);color:#fff;border:none;border-radius:var(--radius-sm, 6px);font-size:.875rem;font-weight:500;cursor:pointer;align-self:flex-start;transition:opacity .15s}.profile-save-btn:hover{opacity:.85}.profile-save-btn:disabled{opacity:.5;cursor:not-allowed}.profile-success{font-size:.85rem;color:#16a34a;padding:8px 12px;background:#f0fdf4;border-radius:var(--radius-sm, 6px);border:1px solid #bbf7d0}.profile-error{font-size:.85rem;color:#dc2626;padding:8px 12px;background:#fef2f2;border-radius:var(--radius-sm, 6px);border:1px solid #fecaca}.profile-hint{font-size:.8rem;color:var(--text-student-secondary, #6b7280)}.profile-error-inline{font-size:.8rem;color:#dc2626}.teacher-main-content .profile-page{color:var(--text-teacher-primary)}.teacher-main-content .profile-card{background:var(--bg-teacher-card, #fff);border:1px solid var(--border-teacher-subtle, #e5e7eb)}.teacher-main-content .profile-field input{background:var(--bg-teacher-body, #f9fafb);color:var(--text-teacher-primary, #111);border:1px solid var(--border-teacher-subtle, #e5e7eb)}.teacher-main-content .profile-field input:focus{border-color:var(--text-teacher-primary, #111)}.teacher-main-content .profile-readonly{background:var(--bg-teacher-hover, #f3f4f6)!important;color:var(--text-teacher-secondary, #6b7280)!important}.teacher-main-content .profile-avatar-initials{background-color:#e0e7ff;color:var(--accent-teacher-purple, #4f46e5)}.teacher-main-content .profile-save-btn,.teacher-main-content .profile-avatar-btn{background:var(--text-teacher-primary, #111)}.admin-teachers{display:flex;flex-direction:column;gap:32px}.create-card{background:var(--bg-teacher-card);border:1px solid var(--border-teacher-subtle);border-radius:12px;padding:24px}.create-card h3{font-size:15px;font-weight:600;margin-bottom:20px}.create-form{display:flex;flex-direction:column;gap:16px}.form-row{display:flex;gap:16px}.form-group{display:flex;flex-direction:column;gap:6px;flex:1}.form-group label{font-size:13px;font-weight:500;color:var(--text-teacher-secondary)}.form-group input{padding:8px 12px;border:1px solid var(--border-teacher-subtle);border-radius:8px;font-size:14px;font-family:inherit;transition:border-color .15s}.form-group input:focus{border-color:var(--text-teacher-primary);outline:none}.form-error{padding:10px 14px;background:#fee2e2;border:1px solid #FECACA;border-radius:8px;font-size:13px;color:#991b1b}.form-actions{display:flex;gap:10px;justify-content:flex-end}.teachers-list{display:flex;flex-direction:column;gap:8px}.teacher-row{display:flex;align-items:center;gap:14px;padding:14px 16px;background:var(--bg-teacher-card);border:1px solid var(--border-teacher-subtle);border-radius:10px}.teacher-avatar{width:40px;height:40px;border-radius:50%;background:#e0e7ff;color:var(--accent-teacher-purple);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:600;flex-shrink:0}.teacher-info{flex:1}.teacher-name{font-size:14px;font-weight:500}.teacher-email{font-size:12px;color:var(--text-teacher-secondary);margin-top:2px}.teacher-badge{display:flex;align-items:center;gap:5px;font-size:12px;color:var(--text-teacher-secondary);background:var(--bg-teacher-hover);padding:4px 10px;border-radius:99px}.icon-btn-danger{background:none;border:none;color:var(--text-teacher-secondary);cursor:pointer;padding:6px;border-radius:6px;display:flex;align-items:center;transition:color .15s}.icon-btn-danger:hover{color:#dc2626;background:#fef2f2}.teachers-empty{display:flex;flex-direction:column;align-items:center;gap:12px;padding:60px;text-align:center;color:var(--text-teacher-secondary)}.not-found{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100vh;text-align:center;gap:16px;font-family:var(--font-sans)}.not-found-code{font-family:var(--font-serif);font-size:120px;font-weight:700;color:#e5e7eb;line-height:1}.not-found h1{font-size:24px;font-weight:600;color:#111827}.not-found p{font-size:15px;color:#6b7280;max-width:360px}.not-found-btn{display:inline-block;margin-top:8px;padding:10px 24px;background:#111827;color:#fff;border-radius:8px;font-size:14px;font-weight:500;text-decoration:none;transition:background .15s}.not-found-btn:hover{background:#1f2937}:root{--font-serif: "Playfair Display", serif;--font-sans: "Inter", -apple-system, sans-serif;--font-mono: "Menlo", "Consolas", "Monaco", monospace;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-pill: 99px;--space-xs: 8px;--space-sm: 16px;--space-md: 24px;--space-lg: 32px;--space-xl: 48px;--bg-student-body: #FFFFFF;--bg-student-sidebar: #F7F7F6;--bg-student-active: #EAEAEA;--bg-student-pill: #F0F0F0;--text-student-primary: #111111;--text-student-secondary: #666666;--text-student-tertiary: #999999;--border-student-color: #E6E6E6;--border-student-style: 1px dotted var(--border-student-color);--border-student-solid: 1px solid var(--border-student-color);--accent-student-green: #22C55E;--accent-student-green-bg: #DCFCE7;--bg-teacher-body: #F9FAFB;--bg-teacher-card: #FFFFFF;--bg-teacher-hover: #F3F4F6;--bg-teacher-subtle: #F9FAFB;--text-teacher-primary: #111827;--text-teacher-secondary: #6B7280;--text-teacher-tertiary: #9CA3AF;--border-teacher-subtle: #E5E7EB;--accent-teacher-purple: #6366F1;--shadow-teacher-card: 0 4px 6px -1px rgba(0, 0, 0, .05), 0 2px 4px -1px rgba(0, 0, 0, .03);--bg-practice-canvas: #F5F4F1;--bg-practice-surface: #FFFFFF;--bg-practice-editor: #1A1A1A;--accent-practice-success: #3D8B3D;--accent-practice-error: #C13010}*{box-sizing:border-box;margin:0;padding:0;outline:none}body{font-family:var(--font-sans);line-height:1.5;-webkit-font-smoothing:antialiased;height:100vh;display:flex;flex-direction:column;overflow:hidden}.text-sm{font-size:.875rem}.text-xs{font-size:.75rem}.text-base{font-size:1rem}.font-medium{font-weight:500}a{text-decoration:none}