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var(--space-8);font-size:var(--text-base);min-height:52px}.btn-icon{padding:var(--space-2);width:40px;min-height:40px}.btn-full{width:100%}.card{background:var(--color-surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);border:1px solid var(--color-border-light);transition:box-shadow var(--transition-base), transform var(--transition-base);overflow:hidden}.card-hoverable:hover{box-shadow:var(--shadow-lg);cursor:pointer;transform:translateY(-2px)}.card-body{padding:var(--space-6)}.card-header{padding:var(--space-4) var(--space-6);border-bottom:1px solid var(--color-border-light);justify-content:space-between;align-items:center;gap:var(--space-4);display:flex}.card-footer{padding:var(--space-4) var(--space-6);border-top:1px solid var(--color-border-light);background:var(--color-bg-alt)}.course-card{background:var(--color-surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);border:1px solid var(--color-border-light);transition:all 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var(--color-border-light);background:var(--color-bg);justify-content:space-between;align-items:center;display:flex}.badge{align-items:center;gap:var(--space-1);border-radius:var(--radius-full);font-size:var(--text-xs);white-space:nowrap;padding:3px 10px;font-weight:600;line-height:1;display:inline-flex}.badge-primary{color:#1e3a8a;background:#e0e7ff}.badge-secondary{color:#0f172a;background:#f1f5f9}.badge-accent{color:#92400e;background:#fef3c7}.badge-success{color:#15803d;background:#dcfce7}.badge-warning{color:#b45309;background:#fef3c7}.badge-danger{color:#b91c1c;background:#fee2e2}.badge-muted{color:#334155;background:#f1f5f9}[data-theme=dark] .badge-primary{color:#93c5fd;background:#3b82f640}[data-theme=dark] .badge-secondary{color:#f8fafc;background:#94a3b840}[data-theme=dark] .badge-accent{color:#f5df88;background:#d4af3740}[data-theme=dark] .badge-success{color:#86efac;background:#22c55e40}[data-theme=dark] .badge-warning{color:#fde68a;background:#f59e0b40}[data-theme=dark] .badge-danger{color:#fca5a5;background:#ef444440}[data-theme=dark] .badge-muted{color:#cbd5e1;background:#94a3b833}.badge-role-student{color:#1e3a8a;background:#e0e7ff}.badge-role-teacher{color:#15803d;background:#dcfce7}.badge-role-admin{color:#92400e;background:#fef3c7}[data-theme=dark] .badge-role-student{color:#93c5fd;background:#3b82f640}[data-theme=dark] .badge-role-teacher{color:#86efac;background:#22c55e40}[data-theme=dark] .badge-role-admin{color:#f5df88;background:#d4af3740}.subject-badge{align-items:center;gap:var(--space-2);padding:var(--space-1) var(--space-3);border-radius:var(--radius-full);font-size:var(--text-xs);color:#fff;text-shadow:0 1px 2px #0006;font-weight:700;display:inline-flex}.progress-wrapper{width:100%}.progress-header{margin-bottom:var(--space-2);font-size:var(--text-sm);justify-content:space-between;align-items:center;display:flex}.progress-label{color:var(--color-text-secondary);font-weight:500}.progress-value{color:var(--color-text);font-weight:700}.progress-track{background:var(--color-bg-alt);border-radius:var(--radius-full);width:100%;height:10px;overflow:hidden}.progress-fill{border-radius:var(--radius-full);background:linear-gradient(90deg, var(--color-primary), var(--color-secondary));height:100%;transition:width .6s;animation:.6s forwards progressFill}.progress-fill-accent{background:linear-gradient(90deg, var(--color-accent), #c84b6e)}.progress-fill-success{background:linear-gradient(90deg,#16a34a,#15803d)}.spinner{border:2.5px solid var(--color-border);border-top-color:var(--color-secondary);border-radius:50%;width:24px;height:24px;animation:.7s linear infinite 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0;border:none;justify-content:center;align-items:center;font-size:22px;line-height:1;display:flex}.modal-close:hover{background:var(--color-bg-alt);color:var(--color-text)}.modal-body{flex:1;min-height:0;padding:1.5rem;overflow-y:auto}.modal-footer{border-top:1px solid var(--color-border);gap:var(--space-3);background:var(--color-bg-secondary);flex-shrink:0;justify-content:flex-end;padding:1rem 1.5rem;display:flex}@media (max-width:640px){.modal-overlay{padding:max(.5rem, env(safe-area-inset-top,.5rem)) .5rem max(1.5rem, env(safe-area-inset-bottom,1.5rem));align-items:flex-start}.modal-box,.modal-content{max-height:calc(100vh - 1.5rem - env(safe-area-inset-top,0px) - env(safe-area-inset-bottom,0px));border-radius:var(--radius-lg);width:100%;margin:0 auto}.modal-header{padding:.85rem 1rem}.modal-title{font-size:1.05rem}.modal-close{width:40px;min-width:40px;height:40px;min-height:40px;font-size:24px}.modal-body{-webkit-overflow-scrolling:touch;padding:1rem;overflow-y:auto}.modal-body div[style*=gridTemplateColumns]{grid-template-columns:1fr!important}.modal-footer{flex-direction:column-reverse;gap:.5rem;padding:.75rem 1rem}.modal-footer button,.modal-footer .btn{justify-content:center;width:100%;min-height:44px}}.notif-bell-wrapper{position:relative}.notif-bell-btn{cursor:pointer;border-radius:var(--radius-md);width:40px;height:40px;color:var(--color-on-primary);transition:background var(--transition-fast);background:0 0;border:none;justify-content:center;align-items:center;font-size:20px;display:flex;position:relative}.notif-bell-btn:hover{background:#ffffff26}.notif-badge{background:var(--color-accent);color:#fff;border-radius:var(--radius-full);border:2px solid var(--color-primary);justify-content:center;align-items:center;min-width:18px;height:18px;padding:0 4px;font-size:10px;font-weight:700;animation:.5s bounce;display:flex;position:absolute;top:4px;right:4px}.notif-dropdown{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);width:320px;box-shadow:var(--shadow-xl);z-index:100;max-height:400px;animation:.2s slideInRight;position:absolute;top:calc(100% + 8px);right:0;overflow-y:auto}.notif-item{padding:var(--space-3) var(--space-4);border-bottom:1px solid var(--color-border-light);cursor:pointer;transition:background var(--transition-fast)}.notif-item:hover{background:var(--color-bg)}.notif-item.unread{background:#4458c70a}.notif-item:last-child{border-bottom:none}.notif-message{font-size:var(--text-sm);color:var(--color-text);line-height:1.4}.notif-time{font-size:var(--text-xs);color:var(--color-muted);margin-top:var(--space-1)}.alert{align-items:flex-start;gap:var(--space-3);padding:var(--space-4);border-radius:var(--radius-md);font-size:var(--text-sm);border:1px solid #0000;line-height:1.5;animation:.2s fadeIn;display:flex}.alert-success{background:var(--color-success-bg);color:#15803d;border-color:#bbf7d0}.alert-danger{background:var(--color-danger-bg);color:#b91c1c;border-color:#fecaca}.alert-warning{background:var(--color-warning-bg);color:#92400e;border-color:#fde68a}.alert-info{background:var(--color-info-bg);color:#1e40af;border-color:#bfdbfe}.alert-icon{flex-shrink:0;margin-top:1px;font-size:18px}.table-wrapper{border-radius:var(--radius-lg);border:1px solid var(--color-border);overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:var(--text-sm)}thead{background:var(--color-primary);color:#fff}thead th{padding:var(--space-3) var(--space-4);text-align:left;font-weight:600;font-size:var(--text-xs);text-transform:uppercase;letter-spacing:.05em}tbody tr{border-bottom:1px solid var(--color-border-light);transition:background var(--transition-fast)}tbody tr:hover{background:var(--color-bg)}tbody tr:last-child{border-bottom:none}tbody td{padding:var(--space-3) var(--space-4);color:var(--color-text-secondary);vertical-align:middle}.tabs{border-bottom:2px solid var(--color-border);margin-bottom:var(--space-6);gap:0;display:flex;overflow-x:auto}.tab-btn{padding:var(--space-3) var(--space-5);cursor:pointer;font-size:var(--text-sm);color:var(--color-muted);white-space:nowrap;transition:all var(--transition-fast);background:0 0;border:none;border-bottom:2px solid #0000;min-height:44px;margin-bottom:-2px;font-weight:600}.tab-btn:hover{color:var(--color-primary)}.tab-btn.active{color:var(--color-primary);border-bottom-color:var(--color-accent)}.lesson-row{align-items:center;gap:var(--space-4);padding:var(--space-4) var(--space-5);background:var(--color-surface);border:1px solid var(--color-border-light);border-radius:var(--radius-md);margin-bottom:var(--space-3);transition:all var(--transition-base);cursor:pointer;text-decoration:none;display:flex}.lesson-row:hover{border-color:var(--color-secondary);box-shadow:var(--shadow-md);transform:translate(2px)}.lesson-row.locked{opacity:.55;cursor:not-allowed;pointer-events:none}.lesson-row.completed{border-left:3px solid var(--color-success)}.lesson-number{background:var(--color-bg-alt);width:32px;height:32px;color:var(--color-text-secondary);font-size:var(--text-sm);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-weight:700;display:flex}.lesson-number.done{background:var(--color-success);color:#fff}.lesson-info{flex:1;min-width:0}.lesson-title{color:var(--color-text);font-weight:600;font-size:var(--text-sm);white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.lesson-meta{font-size:var(--text-xs);color:var(--color-muted);margin-top:2px}.lesson-status{flex-shrink:0;font-size:18px}.quiz-card{background:var(--color-surface);border:2px solid var(--color-secondary);border-radius:var(--radius-xl);padding:var(--space-6);margin-top:var(--space-6)}.quiz-heading{font-family:var(--font-heading);color:var(--color-primary);font-size:var(--text-xl);margin-bottom:var(--space-4);align-items:center;gap:var(--space-3);display:flex}.quiz-question{font-size:var(--text-lg);color:var(--color-text);margin-bottom:var(--space-5);font-weight:600;line-height:1.5}.quiz-options{gap:var(--space-3);flex-direction:column;display:flex}.quiz-option{align-items:center;gap:var(--space-3);padding:var(--space-4);border:2px solid var(--color-border);border-radius:var(--radius-lg);cursor:pointer;transition:all 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var(--color-secondary));color:#fff;width:36px;height:36px;font-size:var(--text-sm);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-weight:700;display:flex}.avatar-lg{width:52px;height:52px;font-size:var(--text-lg)}.avatar-xl{width:72px;height:72px;font-size:var(--text-2xl)}.empty-state{text-align:center;padding:var(--space-16) var(--space-8)}.empty-state-icon{margin-bottom:var(--space-4);font-size:48px}.empty-state-title{font-size:var(--text-xl);color:var(--color-text);margin-bottom:var(--space-2)}.empty-state-desc{font-size:var(--text-sm);color:var(--color-muted);max-width:400px;margin:0 auto var(--space-6)}.search-wrapper{position:relative}.search-icon{color:var(--color-muted);font-size:16px;position:absolute;top:50%;left:14px;transform:translateY(-50%)}.search-input{padding-left:42px}.file-dropzone{border:2px dashed var(--color-border);border-radius:var(--radius-lg);padding:var(--space-8);text-align:center;cursor:pointer;transition:all var(--transition-fast);color:var(--color-muted)}.file-dropzone:hover,.file-dropzone.dragover{border-color:var(--color-secondary);background:var(--color-info-bg);color:var(--color-secondary)}.edit-lock-badge{align-items:center;gap:var(--space-2);font-size:var(--text-xs);border-radius:var(--radius-full);padding:4px 10px;font-weight:600;display:inline-flex}.edit-lock-open{background:var(--color-success-bg);color:var(--color-success)}.edit-lock-locked{background:var(--color-bg-alt);color:var(--color-muted)}.edit-lock-soon{background:var(--color-warning-bg);color:var(--color-warning)}.table-responsive{width:100%;overflow-x:auto}.table{border-collapse:collapse;text-align:left;width:100%}.table th{text-transform:uppercase;letter-spacing:.05em;color:var(--color-text-secondary);background:var(--color-bg-secondary);border-bottom:1px solid var(--color-border);padding:.75rem 1rem;font-size:.78rem;font-weight:700}.table td{border-bottom:1px solid var(--color-border);color:var(--color-text);vertical-align:middle;padding:.85rem 1rem;font-size:.875rem}.table tbody tr:hover{background:var(--color-bg-alt)}[data-theme=dark] thead{color:#0f172a;background:#f8fafc}[data-theme=dark] thead th{color:#0f172a}[data-theme=dark] .table th{color:#0f172a;background:#f8fafc}[data-theme=dark] .table td{color:#0f172a}[data-theme=dark] .table tbody tr:hover{background:#f1f5f9}.desktop-nav-links{align-items:center;gap:1.5rem;display:flex!important}.landing-mobile-menu-toggle{display:none!important}@media (min-width:992px){.mobile-bottom-nav{display:none!important}}@media (max-width:991px){.desktop-nav-links{display:none!important}.landing-mobile-menu-toggle{align-items:center;gap:6px;display:inline-flex!important}.hide-on-mobile{display:none!important}body{-webkit-tap-highlight-color:transparent;padding-bottom:calc(68px + 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#0000000d}.navbar-brand{align-items:center;gap:var(--space-3);color:#0f172a;flex-shrink:0;text-decoration:none;display:flex}.navbar-logo{object-fit:cover;border:2px solid #cbd5e1;border-radius:50%;width:40px;height:40px}.navbar-school-name{font-family:var(--font-heading);font-size:var(--text-lg);letter-spacing:-.01em;color:#1e3a8a;font-weight:800;line-height:1.1}.navbar-tagline{color:#64748b;letter-spacing:.05em;text-transform:uppercase;font-size:9px;font-weight:600;display:block}.navbar-spacer{flex:1}.navbar-actions{align-items:center;gap:var(--space-2);display:flex}.navbar-user{align-items:center;gap:var(--space-2);font-size:var(--text-sm);color:#334155;font-weight:600;display:flex}.navbar-menu-btn{color:#0f172a;cursor:pointer;padding:var(--space-2);background:0 0;border:none;justify-content:center;align-items:center;min-width:44px;min-height:44px;font-size:24px;display:none}@media (max-width:640px){.navbar{padding:0 var(--space-2)}.navbar-menu-btn{display:flex}.navbar-school-name{font-size:var(--text-sm);color:#1e3a8a;font-weight:800}.navbar-tagline,.navbar-user-name{display:none}.navbar-actions{gap:4px}}.sidebar{top:var(--navbar-height);width:var(--sidebar-width);height:calc(100vh - var(--navbar-height));background:var(--color-surface);border-right:1px solid var(--color-border);z-index:100;transition:transform var(--transition-base);padding:var(--space-4) 0;position:fixed;left:0;overflow-y:auto}.sidebar-section{margin-bottom:var(--space-6)}.sidebar-section-label{text-transform:uppercase;letter-spacing:.08em;color:var(--color-muted);padding:0 var(--space-4) var(--space-2);font-size:10px;font-weight:700}.sidebar-link{align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-4);color:var(--color-text-secondary);font-size:var(--text-sm);transition:all var(--transition-fast);border-left:3px solid 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(max-width:1024px){.main-content{width:100%!important;max-width:100vw!important;margin-left:0!important}}.page-container{max-width:var(--content-max);padding:var(--space-6) var(--space-6) var(--space-12);margin:0 auto}@media (max-width:640px){.page-container{padding:var(--space-4) var(--space-4) var(--space-10)}}.page-header{justify-content:space-between;align-items:flex-start;gap:var(--space-4);margin-bottom:var(--space-8);flex-wrap:wrap;display:flex}.page-title{font-family:var(--font-heading);font-size:var(--text-3xl);color:var(--color-primary);margin:0}.page-subtitle{font-size:var(--text-base);color:var(--color-muted);margin-top:var(--space-1)}.landing-hero{background:linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);color:#fff;padding:var(--space-16) var(--space-6);text-align:center;position:relative;overflow:hidden}.landing-hero:before{content:"";background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' 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var(--color-accent)}.landing-cta-student:hover{background:var(--color-accent-hover);border-color:var(--color-accent-hover);color:#fff}.landing-cta-teacher{color:#fff;background:0 0;border:2px solid #fff9}.landing-cta-teacher:hover{color:#fff;background:#ffffff26;text-decoration:none}.noticeboard{background:var(--color-bg);padding:var(--space-10) var(--space-6)}.noticeboard-header{align-items:center;gap:var(--space-4);margin-bottom:var(--space-6);max-width:var(--content-max);margin-left:auto;margin-right:auto;display:flex}.noticeboard-pin{font-size:28px;animation:2s infinite bounce}.noticeboard-title{font-family:var(--font-heading);font-size:var(--text-2xl);color:var(--color-primary)}.noticeboard-scroll{gap:var(--space-4);padding-bottom:var(--space-4);scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;max-width:var(--content-max);margin:0 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#0003}.landing-features{background:var(--color-surface);padding:var(--space-12) var(--space-6)}.features-grid{gap:var(--space-6);max-width:var(--content-max);grid-template-columns:repeat(auto-fit,minmax(220px,1fr));margin:0 auto;display:grid}.feature-card{text-align:center;padding:var(--space-6)}.feature-icon{margin-bottom:var(--space-4);font-size:40px}.feature-title{font-family:var(--font-heading);font-size:var(--text-lg);color:var(--color-primary);margin-bottom:var(--space-2)}.feature-desc{font-size:var(--text-sm);color:var(--color-muted);line-height:1.6}.landing-login-section{padding:var(--space-12) var(--space-6);background:var(--color-bg);gap:var(--space-6);flex-wrap:wrap;justify-content:center;max-width:900px;margin:0 auto;display:flex}.login-portal-card{background:var(--color-surface);border-radius:var(--radius-xl);min-width:260px;padding:var(--space-8);text-align:center;box-shadow:var(--shadow-lg);border:2px solid var(--color-border-light);transition:all var(--transition-base);flex:1}.login-portal-card:hover{border-color:var(--color-secondary);transform:translateY(-3px)}.login-portal-card.accent{border-color:var(--color-accent)}.login-portal-icon{margin-bottom:var(--space-4);font-size:48px}.login-portal-title{font-family:var(--font-heading);font-size:var(--text-2xl);color:var(--color-primary);margin-bottom:var(--space-2)}.login-portal-desc{font-size:var(--text-sm);color:var(--color-muted);margin-bottom:var(--space-6)}.login-page{background:linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);min-height:100vh;padding:var(--space-6);justify-content:center;align-items:center;display:flex}.login-card{background:var(--color-surface);border-radius:var(--radius-2xl);padding:var(--space-8);width:100%;max-width:420px;box-shadow:var(--shadow-xl);animation:.4s fadeIn}.login-logo{margin-bottom:var(--space-8);flex-direction:column;align-items:center;display:flex}.login-logo-img{border:3px solid 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var(--transition-fast);text-decoration:none;display:flex}.resource-link:hover{background:var(--color-bg-alt);text-decoration:none}.footer{background:var(--color-primary);color:#ffffffb3;text-align:center;padding:var(--space-6);font-size:var(--text-sm)}.footer strong{color:#fff}.change-password-page{background:var(--color-bg);min-height:100vh;padding:var(--space-6);justify-content:center;align-items:center;display:flex}.change-password-card{background:var(--color-surface);border-radius:var(--radius-xl);padding:var(--space-8);width:100%;max-width:440px;box-shadow:var(--shadow-lg);border:1px solid var(--color-border);text-align:center}.change-password-icon{margin-bottom:var(--space-4);font-size:48px}html,body,#root,.app-layout{position:relative;box-sizing:border-box!important;width:100%!important;max-width:100vw!important;overflow-x:hidden!important}.main-content,.page-container{box-sizing:border-box!important;width:100%!important;max-width:100vw!important;overflow-x:hidden!important}.table-responsive,.table-wrapper{-webkit-overflow-scrolling:touch!important;width:100%!important;max-width:100%!important;display:block!important;overflow-x:auto!important}@media (max-width:768px){input,select,textarea{border-radius:8px;min-height:44px;max-width:100%!important;font-size:16px!important}.card{box-sizing:border-box!important;border-radius:12px!important;max-width:100%!important;padding:1rem!important;overflow-x:hidden!important}.grid-2,.grid-3,.grid-4,.grid-cols-2,.grid-cols-3,.grid-cols-4,.grid-cols-5{grid-template-columns:1fr!important;gap:.85rem!important}.stats-grid,.dashboard-kpi-grid{grid-template-columns:repeat(2,minmax(0,1fr))!important;gap:.65rem!important;display:grid!important}.stat-card{min-width:0!important;padding:.85rem!important}.stat-card-value{font-size:1.35rem!important}.modal-footer button,.form-actions button{flex:1}.page-header{flex-direction:column!important;align-items:stretch!important;gap:.75rem!important;margin-bottom:1.25rem!important}.page-title{word-break:break-word!important;font-size:1.35rem!important}.horizontal-scroll-container,.table-responsive{scrollbar-width:thin;-webkit-overflow-scrolling:touch!important;max-width:100%!important}.page-container,.landing-page-container{padding:.85rem .85rem calc(75px + env(safe-area-inset-bottom,0px))!important;width:100%!important;max-width:100vw!important}.table-responsive table{min-width:480px}.lesson-page{padding:0 0 calc(80px + env(safe-area-inset-bottom,0px))!important;width:100%!important;max-width:100vw!important}}