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.btn{width:100%!important}.student-courses-grid{gap:1rem!important;grid-template-columns:1fr!important}.student-course-card{padding:1rem!important}.student-course-top{align-items:flex-start!important;flex-direction:column!important;gap:.75rem!important}.student-course-badge{height:48px!important;width:48px!important}.student-lesson-card{align-items:stretch!important;flex-direction:column!important;gap:.75rem!important;text-align:center!important}.student-lesson-time{align-self:center!important;min-width:auto!important}.admin-sidebar{display:none!important}.admin-main-content{margin-left:0!important;padding:1rem!important;width:100%!important}.admin-stats-grid{grid-template-columns:1fr!important}.admin-stat-card{flex-direction:row!important;gap:1rem!important}.admin-quick-actions{grid-template-columns:1fr!important}.admin-quick-action{flex-direction:row!important;gap:1rem!important;justify-content:flex-start!important;padding:1rem!important;text-align:left!important}.action-icon{flex-shrink:0!important;height:48px!important;width:48px!important}.action-label{font-size:.95rem!important;text-align:left!important}.admin-modal,.zoom-manager-modal,.zoom-stats-modal{border-radius:12px!important;margin:5vh auto!important;max-height:90vh!important;max-width:95vw!important;width:95vw!important}.modal-header{padding:1rem!important}.modal-header h2{font-size:1.15rem!important}.empty-state,.student-empty-state{padding:2rem 1rem!important}.empty-state h3,.student-empty-state h3{font-size:1.1rem!important}.empty-state p,.student-empty-state p{font-size:.9rem!important}.progress-bar,.progress-track{height:8px!important}.student-status-badge{font-size:.7rem!important;padding:.3rem .6rem!important}.student-chip{font-size:.75rem!important;padding:.3rem .5rem!important}.loading-container{min-height:200px!important;padding:2rem 1rem!important}.spinner{height:40px!important;width:40px!important}.btn,.dropdown-item,.nav-dropdown-item,a.nav-link,button{min-height:44px}.admin-quick-action,.group-card,.lesson-card,.student-course-card{-webkit-tap-highlight-color:transparent;cursor:pointer}}@media (max-width:768px){@media (hover:none){.admin-stat-card:hover,.group-card:hover,.lesson-card:hover,.stat-card:hover{transform:none!important}}}@media (hover:none){:hover{transform:none!important}*,:after,:before{backdrop-filter:none!important;-webkit-backdrop-filter:none!important;will-change:auto!important}.animate-loading,.banner-container,.material-card.not-viewed,.mock-icon,.new-badge,.status-bar-icon{animation:none!important}:after,:before{filter:none!important}}@media (max-width:768px){.btn,.card,[class*=Card],[class*=card],[role=button],a,button{transition:opacity 80ms ease-out,background-color 80ms ease-out!important}}@supports (padding:max(0px)){@media (max-width:768px){.admin-home-page,.student-home,.teacher-home-page{padding-bottom:max(1rem,env(safe-area-inset-bottom))!important;padding-left:max(.75rem,env(safe-area-inset-left))!important;padding-right:max(.75rem,env(safe-area-inset-right))!important}}}*{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.modal-content,.modal-overlay,.navbar-new,.page-loader-wrapper,.student-navbar{-webkit-backface-visibility:hidden;backface-visibility:hidden;transform:translateZ(0)}@media (prefers-reduced-motion:reduce){*,:after,:before{animation-duration:.01ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important;transition-duration:.01ms!important}}code{font-family:var(--font-mono)}.auth-gradient-bg{align-items:center;background:linear-gradient(135deg,var(--bg-app) 0,var(--bg-surface) 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var(--transition-base)}.glass-card.role-select{align-items:center;color:var(--bg-paper);cursor:pointer;display:flex;flex-direction:column;gap:var(--space-md);overflow:hidden;padding:var(--space-2xl) var(--space-xl);position:relative;text-align:center}.glass-card.role-select:before{background:linear-gradient(135deg,#ffffff1a,#0000);bottom:0;content:"";left:0;opacity:0;position:absolute;right:0;top:0;transition:opacity var(--transition-base)}.glass-card.role-select:hover:before{opacity:1}.glass-card.role-select.active{background:#ffffff40;border:2px solid var(--color-primary);box-shadow:0 0 0 4px #4f46e533,var(--shadow-2xl);transform:translateY(-8px) scale(1.02)}.glass-card.role-select:hover:not(.active){border-color:#ffffff4d;box-shadow:var(--shadow-xl);transform:translateY(-4px)}.role-icon{filter:drop-shadow(0 4px 12px rgba(0,0,0,.3));font-size:var(--text-4xl);line-height:1;transition:transform var(--transition-base)}.glass-card.role-select:hover .role-icon{transform:scale(1.1)}.auth-form-card{animation:fadeIn .2s ease-out;-webkit-backdrop-filter:blur(16px) saturate(180%);backdrop-filter:blur(16px) saturate(180%);background:#ffffff1f;border:1px solid #ffffff2e;border-radius:var(--radius-3xl);box-shadow:var(--shadow-glass);color:var(--bg-paper);max-width:480px;padding:var(--space-2xl);width:100%;z-index:1}.auth-small-note{color:#ffffffb3;font-size:var(--text-sm);margin-top:var(--space-md);text-align:center}.auth-change-role{color:#fffc;cursor:pointer;font-size:var(--text-sm);transition:color var(--transition-fast)}.auth-change-role:hover{color:var(--bg-paper);text-decoration:underline}.App{background:var(--bg-app);display:flex;flex-direction:column;min-height:100vh}.App-header{align-items:center;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);background:#fff;border-bottom:1px solid var(--border-light);box-shadow:var(--shadow-sm);color:var(--text-main);display:flex;min-height:72px;padding:0;position:-webkit-sticky;position:sticky;top:0;z-index:var(--z-sticky)}.App-header h1{font-family:var(--font-sans);font-size:clamp(1.5rem,4vw,2rem);font-style:italic;font-weight:800;letter-spacing:-.02em;margin:0;padding:0;text-align:center}.App-header h1 .brand-easy{color:var(--color-primary)}.App-header h1 .brand-teaching{color:var(--text-main)}.App-main{flex:1 1;margin:0 auto;max-width:var(--container-7xl);padding:var(--space-xl);width:100%}.loading{color:var(--text-secondary);font-size:var(--text-lg);padding:var(--space-2xl);text-align:center}.error{background-color:var(--error-50);border:1px solid var(--error-500);border-radius:var(--radius-xl);box-shadow:var(--shadow-md);color:var(--error-600);margin:var(--space-xl);padding:var(--space-lg)}.courses-section,.quick-actions{background:#fff;border:1px solid var(--border-light);border-radius:var(--radius-2xl);box-shadow:var(--shadow-sm);margin-bottom:var(--space-xl);padding:clamp(24px,5vw,40px);transition:box-shadow var(--transition-base),border-color var(--transition-base)}.courses-section:hover,.quick-actions:hover{border-color:var(--border-medium);box-shadow:var(--shadow-md)}.courses-section h2,.quick-actions h2{color:var(--text-main);font-family:var(--font-display);font-size:clamp(1.5rem,4vw,1.875rem);font-weight:var(--font-bold);letter-spacing:-.5px;margin-bottom:var(--space-lg)}.courses-section h2:after{display:none}.no-courses{color:var(--text-tertiary);font-size:var(--text-lg);padding:var(--space-2xl);text-align:center}.courses-grid{grid-gap:var(--space-lg);display:grid;gap:var(--space-lg);grid-template-columns:repeat(auto-fill,minmax(320px,1fr))}.course-card{background:var(--bg-paper);border:1px solid var(--border-light);border-radius:var(--radius-xl);box-shadow:var(--shadow-xs);overflow:hidden;padding:clamp(20px,4vw,28px);position:relative;transition:transform var(--transition-base),box-shadow var(--transition-base),border-color var(--transition-base);will-change:transform}.course-card:hover{background:#fff;border-color:#4f46e526;box-shadow:0 12px 28px #4f46e51f,0 4px 8px #0000000f;transform:translateY(-4px)}.course-card h3{color:var(--text-primary);font-size:var(--text-xl);font-weight:var(--font-bold);letter-spacing:-.01em;margin-bottom:var(--space-sm)}.course-card .description{color:var(--text-secondary);font-size:var(--text-base);line-height:var(--leading-relaxed);margin-bottom:var(--space-md)}.course-info{background:var(--bg-secondary);border-radius:var(--radius-md);margin:var(--space-md) 0;padding:var(--space-md)}.course-info p{color:var(--text-secondary);font-size:var(--text-sm);margin:var(--space-xs) 0}.course-info strong{color:var(--text-primary);font-weight:var(--font-semibold)}.course-actions{margin-top:var(--space-lg)}.actions-grid{grid-gap:var(--space-lg);display:grid;gap:var(--space-lg);grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}.action-btn{background:linear-gradient(135deg,var(--color-accent) 0,#fbbf24 100%);border:none;border-radius:var(--radius-lg);box-shadow:var(--shadow-glow);color:var(--color-primary);cursor:pointer;font-size:var(--text-base);font-weight:var(--font-medium);padding:var(--space-lg) var(--space-xl);transition:transform var(--transition-base),box-shadow var(--transition-base)}.action-btn:hover{box-shadow:var(--glow-accent-strong);transform:translateY(-2px)}.App-footer{background-color:var(--bg-secondary);border-top:1px solid var(--border-color);color:var(--text-secondary);margin-top:auto;padding:var(--space-xl);text-align:center}.App-footer p{font-size:var(--text-sm)}.page-container{background:var(--bg-primary);min-height:calc(100vh - 60px);padding:var(--space-xl) var(--space-2xl)}.page-header{margin-bottom:var(--space-2xl)}.page-title{color:var(--text-primary);font-size:var(--text-3xl);font-weight:var(--font-semibold);margin-bottom:var(--space-lg)}.filter-tabs{border-bottom:1px solid var(--border-color);display:flex;flex-wrap:wrap;gap:var(--space-sm);margin-bottom:var(--space-xl);padding-bottom:var(--space-sm)}.filter-tab{background:#0000;border:none;border-radius:var(--radius-full);color:var(--text-secondary);cursor:pointer;font-size:var(--text-base);font-weight:var(--font-medium);padding:var(--space-sm) var(--space-xl);transition:background-color var(--transition-base),color var(--transition-base)}.filter-tab.active{background:linear-gradient(135deg,var(--color-accent) 0,#fbbf24 100%);box-shadow:var(--shadow-glow);color:var(--color-primary)}.filter-tab:hover:not(.active){background:var(--bg-tertiary);color:var(--text-primary)}.lesson-card{background:var(--bg-primary);border:1px solid 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var(--transition-base)}.group-item:hover{background:var(--bg-primary);border-color:var(--primary-500);transform:translateX(4px)}.group-name{color:var(--text-primary);font-weight:var(--font-semibold);margin-bottom:var(--space-xs)}.group-info{color:var(--text-secondary);font-size:var(--text-xs)}.form-modern{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-xl);padding:var(--space-xl)}.form-row{grid-gap:var(--space-lg);display:grid;gap:var(--space-lg);grid-template-columns:repeat(auto-fit,minmax(250px,1fr));margin-bottom:var(--space-lg)}.form-group{display:flex;flex-direction:column}.form-label{color:var(--text-primary);font-size:var(--text-sm);font-weight:var(--font-semibold);margin-bottom:var(--space-sm)}.form-input,.form-select,.form-textarea{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-lg);color:var(--text-primary);font-family:var(--font-sans);font-size:var(--text-base);padding:var(--space-md) var(--space-lg);transition:border-color var(--transition-base),box-shadow var(--transition-base)}.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--primary-500);box-shadow:0 0 0 3px #3b82f626;outline:none}.form-textarea{min-height:100px;resize:vertical}.table-modern{background:var(--bg-primary);border:1px solid var(--border-color);border-collapse:initial;border-radius:var(--radius-xl);border-spacing:0;overflow:hidden;width:100%}.table-modern thead{background:var(--bg-secondary)}.table-modern th{color:var(--text-secondary);font-size:var(--text-xs);font-weight:var(--font-semibold);letter-spacing:.5px;padding:var(--space-lg) var(--space-lg);text-align:left;text-transform:uppercase}.table-modern td,.table-modern th{border-bottom:1px solid var(--border-color)}.table-modern td{color:var(--text-primary);font-size:var(--text-base);padding:var(--space-lg)}.table-modern tbody tr:last-child td{border-bottom:none}.table-modern tbody tr:hover{background:var(--bg-secondary)}.calendar-view{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-xl);padding:var(--space-lg)}.calendar-header{align-items:center;display:flex;justify-content:space-between;margin-bottom:var(--space-lg);padding:var(--space-sm)}.calendar-grid{grid-gap:var(--space-sm);display:grid;gap:var(--space-sm);grid-template-columns:repeat(7,1fr)}.calendar-day{border:1px solid var(--border-color);border-radius:var(--radius-md);cursor:pointer;min-height:100px;padding:var(--space-md);transition:border-color var(--transition-base),background-color var(--transition-base)}.calendar-day.today,.calendar-day:hover{background:var(--primary-50);border-color:var(--primary-500)}@media (max-width:768px){.App-header h1{font-size:var(--text-2xl)}.courses-grid{grid-template-columns:1fr}.App-main{padding:var(--space-md)}.actions-grid{grid-template-columns:1fr}.filter-tabs{-webkit-overflow-scrolling:touch;-ms-overflow-style:none;overflow-x:auto;scrollbar-width:none}.filter-tabs::-webkit-scrollbar{display:none}.form-row{grid-template-columns:1fr}.calendar-grid{grid-template-columns:repeat(4,1fr)}.page-header{align-items:stretch;flex-direction:column;gap:1rem}.page-title{font-size:1.5rem;text-align:center}.page-actions{display:flex;flex-direction:column;gap:.75rem}.page-actions a,.page-actions button{justify-content:center;text-align:center;width:100%}table{-webkit-overflow-scrolling:touch;display:block;overflow-x:auto}.MuiFab-root:not(.support-fab),.fab-button:not(.support-fab),.floating-action:not(.support-fab),button[style*="position: fixed"]:not(.support-fab):not(.tp-allow-fixed),div[style*="position: 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0}}.skeleton-text{border-radius:6px;height:16px;margin-bottom:8px}.skeleton-text:last-child{margin-bottom:0}.skeleton-text-block{display:flex;flex-direction:column;gap:8px}.skeleton-title{border-radius:8px;height:24px;width:60%}.skeleton-avatar{border-radius:50%;flex-shrink:0;height:48px;width:48px}.skeleton-button{border-radius:16px;border-radius:var(--radius-lg,16px);height:44px;width:120px}.skeleton-card-wrapper{background:#ffffffb3;border:1px solid #e2e8f0;border:1px solid var(--border-light,#e2e8f0);border-radius:20px;border-radius:var(--radius-xl,20px);padding:20px}.skeleton-course-card{background:#ffffffbf;border:1px solid #fff9;border-radius:24px;border-radius:var(--radius-2xl,24px);box-shadow:0 4px 16px #0f172a0a;padding:20px}.skeleton-course-top{align-items:flex-start;display:flex;gap:16px}.skeleton-course-badge{flex-shrink:0}.skeleton-course-info{display:flex;flex:1 1;flex-direction:column;gap:12px}.skeleton-course-chips{display:flex;gap:8px}.skeleton-today-banner{align-items:center;background:#ffffffd9;border:1px solid #e2e8f0;border:1px solid var(--border-light,#e2e8f0);border-radius:20px;border-radius:var(--radius-xl,20px);display:flex;gap:16px;margin-bottom:24px;padding:16px 20px}.skeleton-lesson-card{background:#fff9;border-radius:16px;border-radius:var(--radius-lg,16px);display:flex;gap:16px;margin-bottom:12px;padding:16px}.skeleton-lesson-info{display:flex;flex:1 1;flex-direction:column;gap:8px}.skeleton-courses-section{background:#ffffffbf;border:1px solid #fff9;border-radius:24px;border-radius:var(--radius-2xl,24px);margin-top:24px;padding:24px}.skeleton-section-header{align-items:center;display:flex;justify-content:space-between;margin-bottom:20px}.skeleton-courses-grid{grid-gap:20px;display:grid;gap:20px;grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}.page-loading-v2{align-items:center;display:flex;flex-direction:column;gap:12px;gap:var(--s-3,12px);justify-content:center;min-height:50vh;padding:32px;padding:var(--s-7,32px)}.page-loading-v2__spinner{animation:spinLoader .8s linear infinite;color:#5b6cff;color:var(--primary,#5b6cff)}@keyframes spinLoader{to{transform:rotate(1turn)}}.page-loading-v2__text{color:#6e6a60;color:var(--fg-3,#6e6a60);font-family:sans-serif;font-family:var(--font-sans,sans-serif);font-size:15px;font-size:var(--t-body,15px);font-weight:500;font-weight:var(--fw-medium,500);margin:0}.auth-checking-v2{align-items:center;animation:authV2FadeIn .15s ease-out;animation:authV2FadeIn .15s var(--ease-out,ease-out);background:#faf8f4;background:var(--bg-app,#faf8f4);display:flex;flex-direction:column;gap:16px;gap:var(--s-4,16px);justify-content:center;min-height:100vh;padding:32px;padding:var(--s-7,32px)}@keyframes authV2FadeIn{0%{opacity:0}to{opacity:1}}.auth-checking-v2__spinner{animation:spinLoader .8s linear infinite;color:#5b6cff;color:var(--primary,#5b6cff)}.auth-checking-v2__text{color:#2a2722;color:var(--fg-2,#2a2722);font-family:Newsreader,Georgia,serif;font-family:var(--font-display,"Newsreader",Georgia,serif);font-size:17px;font-size:var(--t-h4,17px);font-weight:500;font-weight:var(--fw-medium,500);letter-spacing:-.01em;letter-spacing:var(--tr-tight,-.01em)}.student-dashboard-skeleton{margin:0 auto;max-width:1000px;padding:clamp(1.5rem,4vw,3rem)}@media (max-width:640px){.skeleton-today-banner{flex-wrap:wrap;gap:12px}.skeleton-courses-grid{grid-template-columns:1fr}.skeleton-course-top{align-items:stretch;flex-direction:column}.auth-checking-v2{padding:20px;padding:var(--s-5,20px)}}.teacher-dashboard-skeleton{margin:0 auto;max-width:1400px;padding:clamp(1.5rem,4vw,2rem)}.skeleton-stats-row{grid-gap:20px;display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));margin-bottom:32px}.skeleton-stat-card{align-items:center;background:#ffffffbf;border:1px solid #e2e8f0;border:1px solid var(--border-light,#e2e8f0);border-radius:20px;border-radius:var(--radius-xl,20px);display:flex;gap:16px;padding:20px}.skeleton-stat-info{display:flex;flex:1 1;flex-direction:column;gap:8px}.skeleton-section{background:#ffffffbf;border:1px solid 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