@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";.global-footer{padding:0 0 2rem;text-align:center;font-size:.85rem;color:#888;width:100%;margin-top:2rem}.footer-separator-line{max-width:1200px;margin:0 auto 2rem;border-top:1px solid #eee;width:90%}.footer-content{display:flex;flex-direction:column;gap:.75rem;align-items:center}.footer-links{display:flex;align-items:center;justify-content:center}.footer-link{margin:0 10px;color:inherit;text-decoration:none;transition:color .2s ease}.footer-link:hover{color:#34495e;text-decoration:underline}.footer-separator{color:#ccc;font-size:.8rem}.footer-info{font-size:.8rem;color:#aaa}.app-sidebar{width:260px;background-color:#fff;border-right:1px solid var(--app-border-color);padding:24px 0;display:flex;flex-direction:column;flex-shrink:0}.sidebar-nav{display:flex;flex-direction:column;gap:8px;flex:1;padding:0 16px}.sidebar-link{display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:10px;color:#475569;text-decoration:none;font-weight:500;transition:all .2s cubic-bezier(.4,0,.2,1);font-size:var(--font-size-base)}.sidebar-link:hover{background-color:#f5f5f5;color:var(--primary-color, #3498db)}.sidebar-link.active{background-color:var(--primary-light-color, #e6f7ff);color:var(--primary-color, #3498db)}.sidebar-icon{display:flex;align-items:center;justify-content:center}.sidebar-divider{height:1px;background-color:var(--app-border-color);margin:16px 8px}.sidebar-label{font-size:var(--font-size-base)}@media(max-width:768px){.app-sidebar{display:none}}.app-bottom-bar{display:none}@media(max-width:768px){.app-bottom-bar{display:flex;justify-content:space-around;align-items:center;position:fixed;bottom:0;left:0;right:0;height:70px;background-color:var(--surface-bg-color, #ffffff);border-top:1px solid var(--border-color, #eaeaea);box-shadow:0 -2px 10px #0000000d;z-index:1000;padding-bottom:env(safe-area-inset-bottom,0px)}.bottom-bar-link{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;flex:1;height:100%;color:var(--text-color, #8e8e93);text-decoration:none;transition:color .2s ease;-webkit-tap-highlight-color:transparent}.bottom-bar-link:active{opacity:.7}.bottom-bar-link.active{color:var(--primary-color, #3498db)}.bottom-bar-icon{display:flex;align-items:center;justify-content:center;transition:transform .2s cubic-bezier(.175,.885,.32,1.275)}.bottom-bar-link.active .bottom-bar-icon{transform:scale(1.1)}.bottom-bar-label{font-size:11px;font-weight:500}}.app-logo-container{display:flex;align-items:center;justify-content:center;-webkit-user-select:none;user-select:none}.app-logo-container.dir-column{flex-direction:column;gap:5px}.app-logo-container.dir-row{flex-direction:row;gap:10px}.app-logo-image{object-fit:contain;margin-bottom:0!important}.app-logo-text{color:#444;line-height:1.2;font-size:1.4rem;font-weight:500;-webkit-user-select:none;user-select:none;cursor:inherit}.size-small .app-logo-image{width:40px;height:40px}.size-large .app-logo-image{width:80px;height:80px}.app-dropdown-container{position:relative;display:inline-block}.app-dropdown-trigger{cursor:pointer}.app-dropdown-menu{position:absolute;top:calc(100% + 8px);background-color:var(--app-surface-bg, #fff);border:1px solid var(--app-border-color, #e2e8f0);border-radius:12px;box-shadow:0 10px 25px #0000001a,0 0 1px #0000001a;min-width:200px;z-index:1000;overflow:hidden;animation:appDropdownFade .2s cubic-bezier(0,0,.2,1)}.app-dropdown-menu.align-right{right:0}.app-dropdown-menu.align-left{left:0}.app-dropdown-menu.align-center{left:50%;transform:translate(-50%)}.app-dropdown-tip{position:absolute;top:-6px;right:20px;width:12px;height:12px;background:var(--app-surface-bg, #fff);transform:rotate(45deg);border-top:1px solid var(--app-border-color, #e2e8f0);border-left:1px solid var(--app-border-color, #e2e8f0)}.app-dropdown-items{padding:6px}.app-dropdown-item{display:flex;align-items:center;gap:12px;padding:10px 14px;border-radius:8px;cursor:pointer;transition:all .2s ease;color:#4a5568;font-size:.9rem;text-align:left}.app-dropdown-item:hover{background-color:#f7fafc;color:#1a202c}.app-dropdown-item.active{background-color:#ebf4ff;color:#2b6cb0;font-weight:500}.app-dropdown-item-icon{display:flex;align-items:center;justify-content:center;width:20px;height:20px;opacity:.7}.app-dropdown-item:hover .app-dropdown-item-icon{opacity:1}.app-dropdown-item-content{flex:1;min-width:0}.app-dropdown-item-label{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.app-dropdown-item-description{font-size:.75rem;color:#718096;margin-top:2px}.app-dropdown-item.logout,.app-dropdown-item.danger{border-top:1px solid var(--app-border-color, #e2e8f0);margin-top:4px;padding-top:14px}@keyframes appDropdownFade{0%{opacity:0;transform:translateY(-10px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}@media(max-width:600px){.app-dropdown-menu{min-width:180px}}.about-modal-overlay{position:fixed;inset:0;background-color:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.about-modal-content{background:#fff;padding:30px;border-radius:16px;width:90%;max-width:400px;position:relative;text-align:center;box-shadow:0 4px 20px #00000026}.about-close-button{position:absolute;top:10px;right:15px;background:none;border:none;font-size:24px;color:#888;cursor:pointer;padding:5px}.about-close-button:hover{color:#333}.about-logo-section{display:flex;flex-direction:column;align-items:center;margin-bottom:24px}.about-logo{width:80px;height:80px}.about-app-name{font-size:1.4rem;font-weight:500;color:#444}.about-app-name .accent{color:#1abc9c}.about-info{margin-bottom:24px}.about-version{font-size:16px;color:#666;margin-bottom:8px}.about-contact{font-size:14px;color:#666}.about-contact a{color:#1abc9c;text-decoration:none;font-weight:500}.about-contact a:hover{text-decoration:underline}.about-footer{font-size:12px;color:#999;border-top:1px solid #eee;padding-top:16px}.tooltip-container{position:relative;display:inline-flex;align-items:center;justify-content:center}.tooltip-bubble{position:absolute;z-index:1000;padding:6px 12px;background:#0f172ad9;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);color:#fff;font-size:12px;font-weight:500;border-radius:6px;white-space:nowrap;pointer-events:none;box-shadow:0 4px 12px #00000026;border:1px solid rgba(255,255,255,.1)}.tooltip-arrow{position:absolute;width:8px;height:8px;background:inherit;border:inherit;border-top:none;border-left:none}.tooltip-top .tooltip-arrow{bottom:-5px;left:50%;margin-left:-4px;transform:rotate(45deg)}.tooltip-bottom .tooltip-arrow{top:-5px;left:50%;margin-left:-4px;transform:rotate(-135deg)}.tooltip-left .tooltip-arrow{right:-5px;top:50%;margin-top:-4px;transform:rotate(-45deg)}.tooltip-right .tooltip-arrow{left:-5px;top:50%;margin-top:-4px;transform:rotate(135deg)}.dashboard-topbar{display:flex;justify-content:space-between;align-items:center;padding:8px 24px;background-color:#fff;border-bottom:1px solid var(--app-border-color);position:sticky;top:0;z-index:1000;width:100%;box-sizing:border-box}.topbar-left{display:flex;align-items:center}.topbar-logo .app-logo-image{height:32px}.topbar-actions{display:flex;gap:16px;align-items:center}.topbar-divider{width:1px;height:24px;background-color:var(--app-border-color);margin:0 4px}.topbar-user-menu-container{position:relative}.topbar-user-profile{display:flex;align-items:center;gap:12px;cursor:pointer;padding:6px 12px;border-radius:8px;transition:background-color .2s ease}.topbar-user-profile:hover{background-color:#f5f5f5}.topbar-avatar{width:32px;height:32px;border-radius:50%;background-color:#f1f5f9;display:flex;align-items:center;justify-content:center}.topbar-avatar img{width:18px;height:18px;opacity:.6}.topbar-user-name{font-size:var(--font-size-base);font-weight:500;color:#1e293b}.dropdown-header{display:flex;align-items:center;gap:12px;padding:16px;border-bottom:1px solid var(--app-border-color);background-color:#fcfcfc}.dropdown-avatar{width:40px;height:40px;border-radius:50%;background-color:#e6f7ff;display:flex;align-items:center;justify-content:center;flex-shrink:0}.dropdown-avatar img{width:20px;height:20px;opacity:.6}.dropdown-user-info{overflow:hidden}.dropdown-user-name{font-weight:600;font-size:var(--font-size-base);color:#0f172a;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.dropdown-user-email{font-size:var(--font-size-sm);color:#64748b;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.topbar-role-badge{display:inline-flex;align-items:center;gap:4px;margin-top:5px;padding:2px 8px;border-radius:20px;font-size:.7rem;font-weight:600;letter-spacing:.03em;text-transform:uppercase}.topbar-role-badge.teacher{background:#3498db1f;color:#2980b9}.topbar-role-badge.student{background:#7c3aed1f;color:#6d28d9}.topbar-dropdown-custom .app-dropdown-menu{width:250px}.desktop-only{display:inline-block}@media(max-width:768px){.dashboard-topbar{padding:12px 20px}.topbar-logo .app-logo-image{height:24px}.desktop-only{display:none!important}.topbar-user-profile{padding:4px}.topbar-dropdown{right:-10px}}.main-page{display:flex;flex-direction:column;width:100%;height:100vh;height:100dvh;background-color:var(--app-main-bg);text-align:left;overflow:hidden}.main-page-body{display:flex;flex-direction:row;flex:1;width:100%;align-items:stretch;overflow:hidden}.main-page-content{flex:1;padding:24px;overflow-y:auto;-webkit-overflow-scrolling:touch}@media(max-width:768px){.main-page-content{padding:16px 16px 100px}}.skeleton-base{background:linear-gradient(90deg,#f1f5f9 25%,#f8fafc,#f1f5f9 75%);background-size:200% 100%;animation:skeleton-shimmer 2.5s infinite linear;border-radius:8px;position:relative;overflow:hidden}@keyframes skeleton-shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.skeleton-rect{width:100%;height:100%}.skeleton-circle{border-radius:50%}.skeleton-card{background:#fff;border:1px solid rgba(226,232,240,.8);border-radius:16px;padding:20px;display:flex;flex-direction:column;gap:16px;box-shadow:0 4px 6px -1px #0000000d,0 2px 4px -1px #00000008}.dashboard-skeleton-container{display:flex;flex-direction:column;gap:24px;width:100%}.dashboard-skeleton-grid{display:grid;grid-template-columns:repeat(12,1fr);grid-auto-rows:minmax(300px,auto);gap:20px}.dashboard-skeleton-widget{background:#fff;border-radius:12px;padding:20px;border:1px solid var(--app-border-color);display:flex;flex-direction:column;gap:16px}.details-skeleton-container{display:flex;flex-direction:column;width:100%;margin:0 auto}.details-skeleton-header{margin-bottom:24px;display:flex;flex-direction:column;gap:12px}.details-skeleton-breadcrumbs{display:flex;gap:8px;align-items:center}.details-skeleton-title-row{display:flex;align-items:center;justify-content:space-between;gap:16px}.details-skeleton-title-info{display:flex;align-items:center;gap:12px;flex:1}.details-skeleton-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}@media(max-width:1024px){.details-skeleton-grid{grid-template-columns:1fr}}.details-skeleton-section{background:#fff;padding:24px;border-radius:12px;border:1px solid var(--app-border-color);display:flex;flex-direction:column;gap:20px}.template-skeleton-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px;width:100%}.template-skeleton-icon{width:48px;height:48px;border-radius:12px}.template-skeleton-title{height:20px;width:60%;border-radius:4px}.template-skeleton-desc{height:14px;width:90%;border-radius:3px}.class-skeleton-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px;width:100%}.class-skeleton-header{display:flex;align-items:center;gap:12px}.class-skeleton-icon{width:32px;height:32px;border-radius:8px}.class-skeleton-title{height:20px;width:120px}.class-skeleton-meta{height:16px;width:100px}.class-skeleton-badge{height:24px;width:80px;border-radius:12px}.assignment-skeleton-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px;width:100%}.assignment-skeleton-title{height:22px;width:70%}.assignment-skeleton-targets{display:flex;gap:8px}.assignment-skeleton-target{height:24px;width:90px;border-radius:12px}.assignment-skeleton-exercises{display:flex;gap:6px}.assignment-skeleton-exercise{width:28px;height:28px;border-radius:6px}.assignment-skeleton-footer{display:flex;justify-content:space-between;align-items:center;margin-top:auto}.assignment-skeleton-status{height:20px;width:80px;border-radius:10px}.assignment-skeleton-time{height:14px;width:60px}.empty-state-container{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:4rem 2rem;margin:1rem 0;transition:all .3s ease}.empty-state-container.full-variant{min-height:350px}.empty-state-container.compact-variant{min-height:220px;padding:2.5rem 2rem}.empty-state-content{max-width:450px;display:flex;flex-direction:column;align-items:center}.empty-state-icon-wrapper{width:100px;height:100px;background:radial-gradient(circle,rgba(var(--primary-color-rgb),.08) 0%,transparent 70%);border-radius:50%;display:flex;align-items:center;justify-content:center;margin-bottom:2rem;position:relative}.empty-state-icon-wrapper:before{content:"";position:absolute;width:120%;height:120%;background:radial-gradient(circle,rgba(var(--primary-color-rgb),.05) 0%,transparent 70%);animation:pulse-glow 4s ease-in-out infinite}@keyframes pulse-glow{0%,to{transform:scale(1);opacity:.5}50%{transform:scale(1.1);opacity:.8}}.empty-state-icon{width:48px;height:48px;position:relative;z-index:1;opacity:.4;filter:grayscale(1) brightness(1.2);transition:opacity .3s ease,filter .3s ease}.empty-state-container:hover .empty-state-icon{opacity:.7;filter:grayscale(.5) brightness(1)}.empty-state-title{font-size:1.75rem;font-weight:700;margin-bottom:1rem;color:var(--text-color);letter-spacing:-.03em;opacity:.9}.compact-variant .empty-state-title{font-size:1.4rem}.empty-state-description{font-size:1.1rem;line-height:1.7;color:var(--text-muted);margin:0;font-weight:450;max-width:90%}.compact-variant .empty-state-description{font-size:.95rem}[data-theme=dark] .empty-state-icon{opacity:.3;filter:grayscale(1) invert(.5)}[data-theme=dark] .empty-state-container:hover .empty-state-icon{opacity:.6;filter:grayscale(.2) invert(0)}.activity-feed-card{display:flex;flex-direction:column;height:100%}.dashboard-card-header{display:flex;align-items:center;gap:12px;margin-bottom:20px}.header-icon-wrapper{background:var(--app-primary-bg);color:var(--app-primary-color);padding:8px;border-radius:8px;display:flex;align-items:center;justify-content:center}.dashboard-card-title{font-size:1.1rem;font-weight:600;color:var(--app-text-primary);margin:0}.activity-feed-list{display:flex;flex-direction:column;gap:16px;position:relative;padding-left:10px}.activity-feed-list:before{content:"";position:absolute;left:14px;top:8px;bottom:8px;width:2px;background-color:var(--app-border-color);border-radius:2px;z-index:1}.activity-feed-item{display:flex;gap:16px;position:relative;z-index:2}.activity-feed-dot{width:10px;height:10px;border-radius:50%;margin-top:6px;background-color:var(--app-border-color);border:2px solid var(--app-surface-bg);flex-shrink:0}.type-success .activity-feed-dot{background-color:#2ecc71;box-shadow:0 0 0 2px #2ecc7133}.type-milestone .activity-feed-dot{background-color:#f1c40f;box-shadow:0 0 0 2px #f1c40f33}.type-info .activity-feed-dot{background-color:#3498db;box-shadow:0 0 0 2px #3498db33}.activity-feed-content{flex-grow:1;background:var(--app-surface-bg);padding:12px 16px;border-radius:8px;border:1px solid var(--app-border-color)}.activity-feed-text{margin:0 0 6px;font-size:.95rem;color:var(--app-text-primary);line-height:1.4}.activity-class-badge{background:var(--app-primary-bg);color:var(--app-primary-color);padding:2px 6px;border-radius:4px;font-size:.75rem;font-weight:600;margin:0 4px}.activity-feed-time{font-size:.8rem;color:var(--app-text-secondary)}.card-header-skeleton{height:36px;width:60%;background-color:var(--app-border-color);border-radius:8px;margin-bottom:24px;animation:pulse 1.5s infinite ease-in-out}.feed-item-skeleton{height:60px;width:100%;background-color:var(--app-border-color);border-radius:8px;margin-bottom:16px;animation:pulse 1.5s infinite ease-in-out;animation-delay:.2s}@keyframes pulse{0%{opacity:.5}50%{opacity:.8}to{opacity:.5}}.widget-card{display:flex;flex-direction:column;height:100%}.widget-list{display:flex;flex-direction:column;gap:12px}.widget-list-item{display:flex;align-items:center;justify-content:space-between;padding:12px;background:var(--app-background);border:1px solid var(--app-border-color);border-radius:8px;transition:all .2s ease}.widget-list-item:hover{border-color:var(--app-primary-color);box-shadow:0 4px 12px #0000000d}.item-info{display:flex;flex-direction:column;gap:4px}.item-title{margin:0;font-size:.95rem;color:var(--app-text-primary);display:flex;align-items:center;gap:8px}.item-subtitle{margin:0;font-size:.8rem;color:var(--app-text-secondary)}.text-urgent{color:#e74c3c;font-weight:500}.chart-container{flex-grow:1;width:100%;min-height:200px;min-width:0;padding-top:10px;position:relative}.dashboard-page-container{display:flex;flex-direction:column;gap:24px;width:100%;padding-bottom:24px}.dashboard-widgets-grid{display:grid;grid-template-columns:repeat(12,1fr);grid-auto-rows:minmax(300px,auto);gap:20px}.dashboard-widget-wrapper{display:flex;flex-direction:column}.live-feed-widget{grid-column:span 8}.struggling-widget{grid-column:span 4}.heatmap-widget,.wpm-widget{grid-column:span 6}@media(max-width:1024px){.live-feed-widget,.struggling-widget,.heatmap-widget,.wpm-widget{grid-column:span 12}}.dashboard-card{background-color:var(--app-surface-bg);border-radius:12px;padding:20px;box-shadow:0 1px 3px #0000000d;border:1px solid var(--app-border-color);display:flex;flex-direction:column}.dashboard-section-content{display:flex;flex-direction:column;align-items:center;text-align:center;flex-grow:1}.dashboard-placeholder-icon{width:54px;height:54px;border-radius:50%;background-color:#f1f5f9;display:flex;align-items:center;justify-content:center;margin-bottom:12px}.dashboard-placeholder-icon img{width:26px;height:26px;opacity:.5}.dashboard-desc{color:#64748b;margin-bottom:20px;line-height:1.4;flex-grow:1;font-size:var(--font-size-base)}.dashboard-section-content .app-button{width:100%;justify-content:center;max-width:200px}.templates-page-container{width:100%}.templates-list-container{background:#fff;border-radius:12px;border:1px solid #e2e8f0;overflow:hidden;box-shadow:0 1px 3px #0000000d;margin-top:1rem}.templates-list-header{display:grid;grid-template-columns:48px 1.5fr 1fr 140px;padding:14px 20px;background:#f8fafc;border-bottom:1px solid #e2e8f0;font-size:13px;font-weight:600;color:#64748b;text-transform:uppercase;letter-spacing:.05em}.template-item{display:grid;grid-template-columns:48px 1.5fr 1fr 140px;padding:12px 20px;align-items:center;border-bottom:1px solid #f1f5f9;cursor:pointer;transition:background-color .2s ease}.template-item:last-child{border-bottom:none}.template-item:hover{background-color:#f8fafc}.template-type-icon{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center}.template-main-info{display:flex;flex-direction:column;gap:2px;padding-right:1rem}.template-name-row{display:flex;align-items:center;gap:8px}.template-name{font-weight:600;color:#1e293b;margin:0}.template-student-name{font-size:14px;color:#64748b;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding-right:20px}.template-main-info{display:flex;flex-direction:column;padding-right:20px;overflow:hidden}.template-actions{display:flex;justify-content:flex-end;gap:8px}.template-action-btn{width:36px;height:36px;border-radius:10px;border:1px solid #e2e8f0;background:#fff;display:flex;align-items:center;justify-content:center;color:#475569;cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1)}.template-action-btn:hover{background:#f1f5f9;color:#0f172a;border-color:#cbd5e1;transform:translateY(-1px);box-shadow:0 4px 6px -1px #0000001a}.template-action-btn.run-btn:hover{color:#10b981;border-color:#d1fae5;background:#ecfdf5}.template-action-btn.edit-btn:hover{color:#3b82f6;border-color:#dbeafe;background:#eff6ff}.template-action-btn.danger:hover{background:#fef2f2;color:#ef4444;border-color:#fee2e2}.template-type-icon img{transition:transform .2s ease}.template-item:hover .template-type-icon img{transform:scale(1.1)}@media(max-width:900px){.templates-list-header,.template-item{grid-template-columns:48px 1.2fr 1fr 120px}}@media(max-width:768px){.templates-list-header{display:none}.template-item{display:grid;grid-template-areas:"icon info" ". student" "actions actions";grid-template-columns:48px 1fr;padding:16px;gap:4px 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