.welcome{min-height:100vh;min-height:-webkit-fill-available;min-height:100dvh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2);background-attachment:fixed;background-size:cover;padding:var(--spacing-lg);overflow-y:auto;width:100%;-webkit-overflow-scrolling:touch;transition:background .3s ease}html.dark-theme .welcome{background:linear-gradient(135deg,#2a2d47,#1e2139)}.welcome-content{background:var(--color-bg);border-radius:var(--border-radius);padding:var(--spacing-xl);max-width:500px;width:100%;text-align:center;box-shadow:0 10px 40px #0000001a;transition:background-color .3s ease,box-shadow .3s ease}html.dark-theme .welcome-content{box-shadow:0 10px 40px #0000004d}.welcome-title{font-size:var(--font-size-large);font-weight:700;color:var(--color-text);margin-bottom:var(--spacing-md)}.welcome-subtitle{font-size:var(--font-size-medium);color:var(--color-text-secondary);margin-bottom:var(--spacing-xl)}.welcome-actions{display:flex;flex-direction:column;gap:var(--spacing-md)}.btn{min-height:var(--touch-target-min);padding:var(--spacing-md) var(--spacing-lg);font-size:var(--font-size-medium);font-weight:500;border-radius:var(--border-radius);cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:rgba(0,0,0,.1);user-select:none;-webkit-user-select:none;position:relative;z-index:1}.btn-primary{background-color:var(--color-primary);color:#fff}.btn-primary:hover:not(:disabled){background-color:var(--color-primary-dark)}.btn-secondary{background-color:transparent;color:var(--color-primary);border:2px solid var(--color-primary)}.btn-secondary:hover:not(:disabled){background-color:var(--color-bg-secondary)}.btn-guest{background-color:var(--color-bg-secondary);color:var(--color-text);border:2px dashed var(--color-text-secondary);cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:rgba(0,0,0,.1);user-select:none;-webkit-user-select:none;position:relative;z-index:10;pointer-events:auto;width:100%;display:block}.btn-guest:hover:not(:disabled),.btn-guest:active:not(:disabled){background-color:var(--color-bg);border-color:var(--color-primary)}.guest-mode-description{font-size:var(--font-size-small);color:var(--color-text-secondary);margin-top:var(--spacing-xs);margin-bottom:0;font-style:italic;pointer-events:none;position:relative;z-index:0}@media(min-width:768px)and (max-width:1024px){.welcome{padding:var(--ipad-spacing-xl)}.welcome-content{max-width:650px;padding:calc(var(--spacing-xl) * 2);border-radius:16px}.welcome-title{font-size:calc(var(--font-size-large) * 1.5);margin-bottom:var(--spacing-lg)}.welcome-subtitle{font-size:calc(var(--font-size-medium) * 1.2);margin-bottom:calc(var(--spacing-xl) * 1.5)}.welcome-actions{gap:var(--ipad-spacing-md)}.welcome-actions .btn{min-height:56px;padding:1.25rem 2rem;font-size:1.15rem;border-radius:10px}}@media(max-width:767px){.welcome{padding:var(--spacing-md)}.welcome-content{padding:var(--spacing-lg)}.welcome-actions .btn{min-height:var(--touch-target-ideal)}}.account-setup{min-height:100vh;min-height:-webkit-fill-available;min-height:100dvh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2);background-attachment:fixed;background-size:cover;padding:var(--spacing-lg);overflow-y:auto;width:100%;-webkit-overflow-scrolling:touch}.account-setup-content{background:var(--color-bg);border-radius:var(--border-radius);padding:var(--spacing-xl);max-width:500px;width:100%;box-shadow:0 10px 40px #0000001a}.account-setup-title{font-size:var(--font-size-large);font-weight:700;color:var(--color-text);margin-bottom:var(--spacing-sm);text-align:center}.account-setup-subtitle{font-size:var(--font-size-normal);color:var(--color-text-secondary);margin-bottom:var(--spacing-xl);text-align:center}.account-setup-form{display:flex;flex-direction:column;gap:var(--spacing-lg)}.form-hint{color:var(--color-text-secondary);font-size:var(--font-size-small);margin-top:var(--spacing-xs)}@media(min-width:768px)and (max-width:1024px){.account-setup{padding:var(--ipad-spacing-xl)}.account-setup-content{max-width:650px;padding:calc(var(--spacing-xl) * 2);border-radius:16px}.account-setup-title{font-size:calc(var(--font-size-large) * 1.4);margin-bottom:var(--spacing-md)}.account-setup-subtitle{font-size:calc(var(--font-size-normal) * 1.15);margin-bottom:calc(var(--spacing-xl) * 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2rem;font-size:1.15rem;margin-top:var(--spacing-lg);border-radius:10px}.form-error-message{padding:var(--spacing-md);font-size:1rem;border-radius:10px}}@media(max-width:767px){.account-setup{padding:var(--spacing-md)}.account-setup-content{padding:var(--spacing-lg)}.form-input,.btn-submit{min-height:var(--touch-target-ideal)}}.login{min-height:100vh;min-height:-webkit-fill-available;min-height:100dvh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2);background-attachment:fixed;background-size:cover;padding:var(--spacing-lg);overflow-y:auto;width:100%;-webkit-overflow-scrolling:touch}.login-content{background:var(--color-bg);border-radius:var(--border-radius);padding:var(--spacing-xl);max-width:500px;width:100%;box-shadow:0 10px 40px #0000001a}.login-title{font-size:var(--font-size-large);font-weight:700;color:var(--color-text);margin-bottom:var(--spacing-sm);text-align:center}.login-subtitle{font-size:var(--font-size-normal);color:var(--color-text-secondary);margin-bottom:var(--spacing-xl);text-align:center}.login-form{display:flex;flex-direction:column;gap:var(--spacing-lg)}.form-input{min-height:var(--touch-target-min);padding:var(--spacing-md);font-size:var(--font-size-normal);border:2px solid var(--color-border);border-radius:var(--border-radius);transition:border-color .2s ease}.form-input:focus{outline:none;border-color:var(--color-primary)}.form-input:disabled{background-color:var(--color-bg-secondary);cursor:not-allowed}.form-checkbox-label{display:flex;align-items:center;gap:var(--spacing-sm);font-size:var(--font-size-normal);color:var(--color-text);cursor:pointer}.form-checkbox{width:20px;height:20px;cursor:pointer}.form-checkbox:disabled{cursor:not-allowed}.login-divider{display:flex;align-items:center;text-align:center;margin:var(--spacing-md) 0;color:var(--color-text-secondary)}.login-divider:before,.login-divider:after{content:"";flex:1;border-bottom:1px solid var(--color-border)}.login-divider span{padding:0 var(--spacing-md);font-size:var(--font-size-small)}.btn-google{width:100%;display:flex;align-items:center;justify-content:center;gap:var(--spacing-sm);background:#fff;color:#3c4043;border:1px solid #dadce0;padding:var(--spacing-md);font-size:var(--font-size-normal);font-weight:500;border-radius:var(--border-radius);transition:all .2s ease}.btn-google:hover:not(:disabled){background:#f8f9fa;box-shadow:0 1px 3px #0000001a}.btn-google:disabled{opacity:.6;cursor:not-allowed}.google-icon{flex-shrink:0}.photo-editor-overlay{position:fixed;inset:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:2000;padding:var(--spacing-lg)}.photo-editor{background:var(--color-bg);border-radius:var(--border-radius);padding:var(--spacing-xl);max-width:500px;width:100%;box-shadow:0 10px 40px #0000004d}.photo-editor-title{font-size:var(--font-size-large);font-weight:700;color:var(--color-text);margin-bottom:var(--spacing-sm);text-align:center}.photo-editor-subtitle{font-size:var(--font-size-small);color:var(--color-text-secondary);margin-bottom:var(--spacing-xl);text-align:center}.photo-editor-preview-container{display:flex;justify-content:center;margin-bottom:var(--spacing-xl)}.photo-editor-preview{width:300px;height:300px;border-radius:50%;overflow:hidden;border:4px solid var(--color-primary);position:relative;background:var(--color-bg-secondary);cursor:grab;-webkit-user-select:none;user-select:none}.photo-editor-preview:active{cursor:grabbing}.photo-editor-image-wrapper{position:absolute;top:50%;left:50%;transform-origin:center center;-webkit-user-select:none;user-select:none;will-change:transform}.photo-editor-image{display:block;-webkit-user-select:none;user-select:none;pointer-events:none;max-width:none;max-height:none}.photo-editor-image-wrapper img{width:auto;height:auto;max-width:300px;max-height:300px;object-fit:contain}.photo-editor-controls{display:flex;flex-direction:column;gap:var(--spacing-md);margin-bottom:var(--spacing-xl)}.photo-editor-control-group{display:flex;flex-direction:column;gap:var(--spacing-sm)}.photo-editor-label{font-size:var(--font-size-normal);font-weight:500;color:var(--color-text)}.photo-editor-scale-controls{display:flex;align-items:center;gap:var(--spacing-md)}.btn-icon{width:40px;height:40px;border-radius:50%;background:var(--color-bg-secondary);border:2px solid var(--color-border);font-size:24px;font-weight:700;color:var(--color-text);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s 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.btn{flex:1}.child-profile-setup{min-height:100vh;min-height:-webkit-fill-available;min-height:100dvh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2);background-attachment:fixed;background-size:cover;padding:var(--spacing-lg);overflow-y:auto;width:100%;-webkit-overflow-scrolling:touch}.child-profile-setup-content{background:var(--color-bg);border-radius:var(--border-radius);padding:var(--spacing-xl);max-width:500px;width:100%;box-shadow:0 10px 40px #0000001a}.child-profile-setup-title{font-size:var(--font-size-large);font-weight:700;color:var(--color-text);margin-bottom:var(--spacing-sm);text-align:center}.child-profile-setup-subtitle{font-size:var(--font-size-normal);color:var(--color-text-secondary);margin-bottom:var(--spacing-xl);text-align:center}.child-profile-setup-form{display:flex;flex-direction:column;gap:var(--spacing-lg)}.photo-hint{font-size:var(--font-size-small);color:var(--color-text-secondary);margin-top:var(--spacing-xs)}.btn-submit{width:100%;margin-top:var(--spacing-md)}.btn-link{background:transparent;color:var(--color-primary);text-decoration:underline;padding:var(--spacing-sm);font-size:var(--font-size-normal)}.btn-link:hover:not(:disabled){background-color:var(--color-bg-secondary)}.child-home{min-height:100vh;min-height:-webkit-fill-available;min-height:100dvh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2);background-attachment:fixed;background-size:cover;padding:var(--spacing-lg);-webkit-overflow-scrolling:touch;overflow-y:auto;width:100%;box-sizing:border-box}.child-home-content{background:var(--color-bg);border-radius:var(--border-radius);padding:var(--spacing-xl);max-width:600px;width:100%;box-shadow:0 10px 40px #0000001a;text-align:center}@media(min-width:768px)and (max-width:1024px){.child-home-content{max-width:700px;padding:calc(var(--spacing-xl) * 1.5)}.child-header{margin-bottom:calc(var(--spacing-xl) * 1.5)}.child-avatar-large{width:160px;height:160px;margin-bottom:var(--spacing-lg)}.child-avatar-placeholder-large svg{width:64px;height:64px}.child-welcome{font-size:calc(var(--font-size-large) * 1.5);margin-bottom:var(--spacing-md)}.child-grade-info{font-size:calc(var(--font-size-normal) * 1.2)}.child-tools{margin:calc(var(--spacing-xl) * 1.5) 0;padding:var(--spacing-xl) 0}.child-tools-grid{max-width:600px;gap:var(--spacing-lg)}.btn-tool{width:180px;height:180px;aspect-ratio:1;padding:var(--spacing-xl)}.tool-icon svg{width:48px;height:48px}.tool-label{font-size:1.1rem}.child-actions{margin-top:calc(var(--spacing-xl) * 1.5)}.child-action-buttons{gap:var(--spacing-lg);flex-wrap:wrap}.child-action-buttons .btn{flex:1;min-width:200px;max-width:300px;padding:1.25rem 2rem;font-size:1.15rem;min-height:56px}}@media(min-width:768px)and (max-width:1024px){.child-home-content{max-width:700px;padding:calc(var(--spacing-xl) * 1.5)}.child-avatar-large{width:140px;height:140px}.child-avatar-placeholder-large svg{width:56px;height:56px}.child-welcome{font-size:calc(var(--font-size-large) * 1.2)}.child-action-buttons{gap:var(--spacing-lg)}.child-action-buttons .btn{padding:1rem 2rem;font-size:1.1rem;min-height:var(--touch-target-ideal)}}@media(max-width:767px){.child-home{padding:var(--spacing-md)}.child-home-content{padding:var(--spacing-lg)}.child-avatar-large{width:100px;height:100px}.child-avatar-placeholder-large svg{width:40px;height:40px}.child-tools-grid{grid-template-columns:1fr;gap:var(--spacing-md);max-width:100%}.btn-tool{width:120px;height:120px;aspect-ratio:1}.tool-icon svg{width:32px;height:32px}.child-action-buttons{flex-direction:column;gap:var(--spacing-md);align-items:center;justify-content:center}.child-action-buttons .btn{width:100%;max-width:300px;min-height:var(--touch-target-ideal);margin:0 auto}}.child-header{margin-bottom:var(--spacing-xl)}.child-avatar-large{width:120px;height:120px;border-radius:50%;overflow:hidden;margin:0 auto var(--spacing-md);border:4px solid var(--color-primary)}.child-avatar-large img{width:100%;height:100%;object-fit:cover}.child-avatar-placeholder-large{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.child-avatar-placeholder-large svg{width:48px;height:48px}.child-welcome{font-size:var(--font-size-large);font-weight:700;color:var(--color-text);margin-bottom:var(--spacing-sm)}.child-grade-info{font-size:var(--font-size-normal);color:var(--color-text-secondary)}.child-tools{margin:var(--spacing-xl) 0;padding:var(--spacing-lg) 0;border-top:1px solid var(--color-border, #e0e0e0);border-bottom:1px solid var(--color-border, #e0e0e0)}.child-tools-title{font-size:var(--font-size-normal);font-weight:600;color:var(--color-text-secondary);margin-bottom:var(--spacing-md);text-align:center}.child-tools-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:var(--spacing-md);justify-items:center;align-items:start;max-width:500px;margin:0 auto}.child-tools-grid .btn-tool.btn-primary{grid-column:1 / -1;justify-self:center}.child-tools-grid .btn-tool.btn-secondary{grid-row:2}.btn-tool{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-lg);width:150px;height:150px;aspect-ratio:1;border-radius:var(--border-radius, 12px);transition:transform .2s ease,box-shadow .2s ease}.btn-tool:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 4px 12px #00000026}.btn-tool:active:not(:disabled){transform:translateY(0)}.btn-tool:disabled{opacity:.5;cursor:not-allowed}.tool-icon{display:flex;align-items:center;justify-content:center;line-height:1}.tool-icon svg{width:40px;height:40px}.tool-label{font-size:var(--font-size-normal);font-weight:500}.tool-coming-soon{font-size:var(--font-size-small);color:var(--color-text-secondary);font-weight:400;font-size:.8rem;margin-top:auto;opacity:1}.child-actions{margin-top:var(--spacing-xl)}.coming-soon{font-size:var(--font-size-normal);color:var(--color-text-secondary);margin-bottom:var(--spacing-md)}.child-action-buttons{display:flex;gap:var(--spacing-md);justify-content:center;align-items:center}.child-action-buttons .btn{flex:1;max-width:200px}.child-selector{min-height:100vh;min-height:-webkit-fill-available;min-height:100dvh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2);background-attachment:fixed;background-size:cover;padding:var(--spacing-lg);-webkit-overflow-scrolling:touch;overflow-y:auto;width:100%}html.dark-theme .child-selector{background:linear-gradient(135deg,#2a2d47,#1e2139)}.child-selector-content{background:var(--color-bg);border-radius:var(--border-radius);padding:var(--spacing-xl);max-width:600px;width:100%;box-shadow:0 10px 40px #0000001a}html.dark-theme .child-selector-content{box-shadow:0 10px 40px #0000004d}@media(min-width:768px)and (max-width:1024px){.child-selector-content{max-width:750px;padding:calc(var(--spacing-xl) * 1.5)}.child-selector-title{font-size:calc(var(--font-size-large) * 1.3);margin-bottom:var(--spacing-md)}.child-selector-subtitle{font-size:calc(var(--font-size-normal) * 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2rem;font-size:1.15rem;min-height:56px}}@media(max-width:767px){.child-selector{padding:var(--spacing-md)}.child-selector-content{padding:var(--spacing-lg)}.child-card{padding:var(--spacing-md);min-height:var(--touch-target-ideal);-webkit-tap-highlight-color:transparent;touch-action:manipulation}}.child-selector-title{font-size:var(--font-size-large);font-weight:700;color:var(--color-text);margin-bottom:var(--spacing-sm);text-align:center}.child-selector-subtitle{font-size:var(--font-size-normal);color:var(--color-text-secondary);margin-bottom:var(--spacing-xl);text-align:center}.child-list{display:flex;flex-direction:column;gap:var(--spacing-md);margin-bottom:var(--spacing-lg)}.child-card{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-md);border:2px solid var(--color-border);border-radius:var(--border-radius);cursor:pointer;transition:all .2s ease;background:var(--color-bg)}.child-card:hover{border-color:var(--color-primary);transform:translateY(-2px);box-shadow:0 4px 12px #0000001a}html.dark-theme .child-card:hover{box-shadow:0 4px 12px #ff8e8e4d}.child-card.active{border-color:var(--color-primary);background:#f0f4ff}html.dark-theme .child-card.active{background:linear-gradient(135deg,#ff8e8e33,#ffb3b326);border-color:var(--color-primary);box-shadow:0 4px 12px #ff8e8e4d}.child-avatar{width:60px;height:60px;border-radius:50%;overflow:hidden;flex-shrink:0;border:2px solid var(--color-border)}.child-avatar img{width:100%;height:100%;object-fit:cover}.child-avatar-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;font-size:24px;font-weight:700}html.dark-theme .child-avatar-placeholder{background:linear-gradient(135deg,#3a3d57,#2a2d47)}.child-info{flex:1}.child-name{font-size:var(--font-size-normal);font-weight:600;color:var(--color-text);margin:0 0 var(--spacing-xs) 0}.child-grade{font-size:var(--font-size-small);color:var(--color-text-secondary);margin:0}.active-indicator{width:30px;height:30px;border-radius:50%;background:var(--color-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0}.confirm-dialog-overlay{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;padding:var(--spacing-lg)}.confirm-dialog{background:var(--color-bg);border-radius:var(--border-radius);padding:var(--spacing-xl);max-width:400px;width:100%;box-shadow:0 10px 40px #0003}.confirm-dialog-title{font-size:var(--font-size-large);font-weight:700;color:var(--color-text);margin-bottom:var(--spacing-md)}.confirm-dialog-message{font-size:var(--font-size-normal);color:var(--color-text-secondary);margin-bottom:var(--spacing-xl);line-height:1.5}.confirm-dialog-actions{display:flex;gap:var(--spacing-md);justify-content:flex-end}.confirm-dialog.danger .confirm-dialog-title{color:var(--color-error)}.btn-danger{background:var(--color-error);color:#fff}.btn-danger:hover:not(:disabled){background:#d32f2f}.settings{min-height:100vh;min-height:-webkit-fill-available;min-height:100dvh;display:flex;flex-direction:column;background:linear-gradient(135deg,#667eea,#764ba2);background-attachment:fixed;background-size:cover;width:100%;-webkit-overflow-scrolling:touch;transition:background .3s ease}html.dark-theme .settings{background:linear-gradient(135deg,#2a2d47,#1e2139)}.settings-header{background:var(--color-bg);box-shadow:0 2px 8px #0000001a;padding:.75rem 1rem;z-index:10;flex-shrink:0;width:100%;box-sizing:border-box;transition:background-color .3s ease}html.dark-theme .settings-header{box-shadow:0 2px 8px #0000004d}.settings-header .header-content{margin:0 auto;display:grid;grid-template-columns:min-content 1fr min-content;align-items:center;gap:.75rem;position:relative;width:100%;justify-items:start;box-sizing:border-box;padding:0}.settings-header .header-left{display:flex;align-items:center;gap:.5rem;justify-self:start;align-self:center;flex-shrink:0;grid-column:1;width:auto}.settings-header .header-icon{width:2.5rem;height:2.5rem;background:var(--color-accent);border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--color-text);transition:background-color .3s ease,color .3s ease}html.dark-theme .settings-header .header-icon{background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-primary-dark) 100%);color:#fff;box-shadow:0 4px 12px #ff8e8e4d}.settings-header .header-icon 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