:root{--color-primary: #e91e63;--color-primary-light: #f48fb1;--color-primary-dark: #c2185b;--color-secondary: #9c27b0;--color-secondary-light: #ce93d8;--color-secondary-dark: #7b1fa2;--color-background: #ffffff;--color-surface: #f5f5f5;--color-text: #212121;--color-text-secondary: #757575;--color-border: #e0e0e0;--color-success: #4caf50;--color-warning: #ff9800;--color-error: #f44336;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 2rem;--radius-sm: .25rem;--radius-md: .5rem;--radius-lg: 1rem;--radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 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var(--transition-slow)}.milestone-alert{margin-top:var(--spacing-md);padding:var(--spacing-sm);background:linear-gradient(135deg,#fff3e0,#ffe0b2);border-radius:var(--radius-md);text-align:center;font-weight:600;font-size:var(--font-size-xs);color:#e65100;display:flex;align-items:center;justify-content:center;gap:var(--spacing-xs)}.milestone-icon{font-size:var(--font-size-base)}@media(max-width:768px){.progress-stats{grid-template-columns:1fr}.stat-value{font-size:var(--font-size-2xl)}}.week-selector{margin-bottom:var(--spacing-lg)}.selector-header{margin-bottom:var(--spacing-md)}.selector-header h3{color:var(--color-primary);margin:0;font-size:var(--font-size-base);font-weight:600;text-transform:uppercase;letter-spacing:.5px}.selector-controls{display:flex;align-items:center;gap:var(--spacing-sm)}.nav-button{width:40px;height:40px;border-radius:var(--radius-md);background-color:var(--color-surface);border:2px solid var(--color-border);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition-fast);color:var(--color-text);font-size:1.5rem;font-weight:300;flex-shrink:0}.nav-button:hover:not(:disabled){background-color:var(--color-primary);border-color:var(--color-primary);color:#fff;transform:scale(1.1)}.nav-button:disabled{opacity:.3;cursor:not-allowed}.week-dropdown-container{flex:1;position:relative}.week-dropdown{width:100%;height:40px;padding:var(--spacing-sm) var(--spacing-md);background-color:var(--color-surface);border:2px solid var(--color-border);border-radius:var(--radius-md);font-size:var(--font-size-base);font-weight:600;color:var(--color-primary);cursor:pointer;transition:all var(--transition-fast);appearance:none;background-image:url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23e91e63' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline 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h3{font-size:var(--font-size-sm)}.nav-button,.jump-current-button{width:36px;height:36px}.week-dropdown{height:36px;font-size:var(--font-size-sm)}}.baby-development{margin-bottom:var(--spacing-lg);height:100%;display:flex;flex-direction:column}.baby-development h2{color:var(--color-primary);margin-bottom:var(--spacing-md)}.baby-development h3{color:var(--color-text);font-size:var(--font-size-xl);margin-top:var(--spacing-xl);margin-bottom:var(--spacing-md)}.development-list,.symptoms-list,.appointments-list{list-style:none;padding:0;margin:0}.development-item,.symptom-item,.appointment-item{display:flex;align-items:flex-start;gap:var(--spacing-md);padding:var(--spacing-md);margin-bottom:var(--spacing-sm);background-color:var(--color-surface);border-radius:var(--radius-md);transition:transform 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rgba(0,0,0,.1))}.size-text{flex:1}.size-label{font-size:var(--font-size-sm);color:var(--color-primary-dark);font-weight:500}.size-value{font-size:var(--font-size-2xl);font-weight:700;color:var(--color-primary);text-transform:capitalize}.size-stats{display:grid;grid-template-columns:1fr 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var(--spacing-md);border-radius:var(--radius-full);font-weight:700;font-size:var(--font-size-sm)}.progress-bar-container{margin-bottom:var(--spacing-xl)}.progress-bar{height:8px;background-color:var(--color-surface);border-radius:var(--radius-full);overflow:hidden;margin-bottom:var(--spacing-sm)}.progress-fill{height:100%;background:linear-gradient(90deg,var(--color-success),#81c784);border-radius:var(--radius-full);transition:width var(--transition-slow)}.progress-label{text-align:center;font-size:var(--font-size-sm);color:var(--color-text-secondary);font-weight:600}.milestone-category{margin-bottom:var(--spacing-xl)}.milestone-category 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transparent}.resource-link:hover{background-color:var(--color-background);border-color:var(--color-primary);transform:translate(4px)}.resource-content{flex:1;display:flex;flex-direction:column;gap:var(--spacing-xs)}.resource-title{font-weight:600;color:var(--color-primary)}.resource-description{font-size:var(--font-size-sm);color:var(--color-text-secondary)}.resource-arrow{flex-shrink:0;font-size:var(--font-size-xl);color:var(--color-primary);transition:transform var(--transition-fast)}.resource-link:hover .resource-arrow{transform:translate(4px)}.resources-disclaimer{margin-top:var(--spacing-xl);padding:var(--spacing-md);background-color:#fff3e0;border-left:4px solid var(--color-warning);border-radius:var(--radius-md);font-size:var(--font-size-sm);color:#e65100}.resources-disclaimer strong{font-weight:700}@media(max-width:768px){.resource-link{padding:var(--spacing-sm)}.resource-arrow{font-size:var(--font-size-lg)}}.app{min-height:100vh;display:flex;flex-direction:column;background-color:var(--color-surface)}.main-content{flex:1;padding:var(--spacing-xl) var(--container-padding)}.welcome-section{max-width:900px;margin:0 auto}.welcome-card{text-align:center;padding:var(--spacing-2xl);margin-bottom:var(--spacing-xl)}.welcome-card h1{color:var(--color-primary);margin-bottom:var(--spacing-md)}.welcome-card p{font-size:var(--font-size-lg);color:var(--color-text-secondary);margin-bottom:var(--spacing-xl);max-width:600px;margin-left:auto;margin-right:auto}.btn-large{padding:var(--spacing-md) var(--spacing-2xl);font-size:var(--font-size-lg)}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:var(--spacing-lg)}.feature-card{text-align:center;padding:var(--spacing-xl);transition:transform var(--transition-fast)}.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.feature-icon{font-size:3rem;display:block;margin-bottom:var(--spacing-md)}.feature-card h3{color:var(--color-primary);margin-bottom:var(--spacing-sm)}.feature-card p{color:var(--color-text-secondary);font-size:var(--font-size-sm);margin:0}.tracker-section{display:grid;grid-template-columns:1fr 400px;gap:var(--spacing-xl);align-items:start;max-width:1400px;margin:0 auto}.tracker-main{min-width:0;max-width:800px;width:100%}.tracker-sidebar{position:sticky;top:calc(var(--spacing-lg) + 80px);max-height:calc(100vh - var(--spacing-xl) - 80px);overflow-y:auto}.tracker-sidebar::-webkit-scrollbar{width:8px}.tracker-sidebar::-webkit-scrollbar-track{background:var(--color-surface);border-radius:var(--radius-md)}.tracker-sidebar::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:var(--radius-md)}.tracker-sidebar::-webkit-scrollbar-thumb:hover{background:var(--color-primary)}.app-footer{background-color:var(--color-background);border-top:1px solid var(--color-border);padding:var(--spacing-xl) 0;margin-top:var(--spacing-2xl)}.app-footer p{text-align:center;color:var(--color-text-secondary);font-size:var(--font-size-sm);margin-bottom:var(--spacing-sm)}.app-footer strong{color:var(--color-text)}.footer-note{color:var(--color-primary)!important;font-weight:600;margin:0!important}@media(max-width:1024px){.tracker-section{grid-template-columns:1fr}.tracker-sidebar{position:static;max-height:none}}@media(max-width:768px){.main-content{padding:var(--spacing-lg) var(--container-padding)}.welcome-card{padding:var(--spacing-xl)}.welcome-card h1{font-size:var(--font-size-2xl)}.welcome-card p{font-size:var(--font-size-base)}.features-grid{grid-template-columns:1fr;gap:var(--spacing-md)}.feature-card{padding:var(--spacing-lg)}}@media(max-width:480px){.welcome-card{padding:var(--spacing-lg)}.btn-large{width:100%}}