:root{--color-primary: #0066FF;--color-primary-light: #00F0FF;--color-primary-dark: #001133;--color-bg-primary: #FFFFFF;--color-bg-secondary: #F5F5F5;--color-bg-tertiary: #E8E8E8;--color-surface-card: #FFFFFF;--color-surface-elevated: #FFFFFF;--color-text-primary: #001133;--color-text-secondary: #1F2937;--color-text-tertiary: #6B7280;--color-text-on-primary: #FFFFFF;--color-button-primary-bg: #0066FF;--color-button-primary-text: #FFFFFF;--color-button-primary-hover: #0052CC;--color-button-secondary-bg: #F8F9FA;--color-button-secondary-text: #2D3436;--color-button-secondary-border: #DDD;--color-button-secondary-hover-bg: #E9ECEF;--color-button-secondary-hover-border: #CBD5E0;--color-status-success-bg: #00B894;--color-status-success-text: #2E7D32;--color-status-success-light: #E8F5E9;--color-status-success-border: #81C784;--color-status-error-bg: #E17055;--color-status-error-text: #C62828;--color-status-error-light: #FFEBEE;--color-status-error-border: #EF5350;--color-status-warning-bg: #FDCB6E;--color-status-warning-text: #F57C00;--color-status-warning-light: #FFF3E0;--color-status-warning-border: #FFB74D;--color-status-info-bg: #3498DB;--color-status-info-text: #1976D2;--color-status-info-light: #E3F2FD;--color-border-default: #E2E8F0;--color-border-light: #EDF2F7;--color-border-dark: #CBD5E0;--shadow-sm: 0 2px 4px rgba(0, 0, 0, .1);--shadow-md: 0 4px 6px rgba(0, 0, 0, .07);--shadow-lg: 0 8px 15px rgba(0, 0, 0, .12);--shadow-xl: 0 20px 60px rgba(0, 0, 0, .3);--gradient-primary: linear-gradient(135deg, #00F0FF 0%, #0066FF 50%, #001133 100%);--gradient-primary-alt: linear-gradient(135deg, #00F0FF 0%, #0066FF 100%);--color-app-store: #000000;--color-google-play: #01875F;--color-overlay: rgba(0, 0, 0, .5);--color-overlay-light: rgba(0, 0, 0, .15);--color-link: #0066FF;--color-link-hover: #0052CC;--color-link-light: #00F0FF}@media(prefers-color-scheme:dark){:root{--color-primary: #00F0FF;--color-primary-light: #33F3FF;--color-primary-dark: #0066FF;--color-bg-primary: #0F0F14;--color-bg-secondary: #1A1A22;--color-bg-tertiary: #1F1F28;--color-surface-card: #1F1F28;--color-surface-elevated: #2D2D3A;--color-text-primary: #F8F9FA;--color-text-secondary: #B8B9BD;--color-text-tertiary: #6C6E72;--color-text-on-primary: #001133;--color-button-primary-bg: #00F0FF;--color-button-primary-text: #001133;--color-button-primary-hover: #33F3FF;--color-button-secondary-bg: #2D2D3A;--color-button-secondary-text: #E9ECEF;--color-button-secondary-border: #3D3D4D;--color-button-secondary-hover-bg: #3D3D4D;--color-button-secondary-hover-border: #4D4D5D;--color-border-default: #3D3D4D;--color-border-light: #2D2D3A;--color-border-dark: #4D4D5D;--color-link: #00F0FF;--color-link-hover: #33F3FF;--color-link-light: #66F6FF;--gradient-primary: linear-gradient(135deg, #001a33 0%, #003d66 50%, #0066FF 100%);--gradient-primary-alt: linear-gradient(135deg, #001a33 0%, #0066FF 100%);--color-overlay: rgba(0, 0, 0, .7);--shadow-sm: 0 2px 4px rgba(0, 240, 255, .1);--shadow-md: 0 4px 6px rgba(0, 240, 255, .15);--shadow-lg: 0 8px 15px rgba(0, 240, 255, .2);--shadow-xl: 0 20px 60px rgba(0, 240, 255, .3)}}:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:var(--color-link);text-decoration:inherit}a:hover{color:var(--color-link-hover)}body{margin:0;display:flex;min-width:320px;min-height:100vh}#root{width:100%}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;cursor:pointer;transition:border-color .25s}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica 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h2{margin:0;color:var(--color-text-primary);font-size:1.75rem}.close-button{background:transparent;border:none;font-size:2rem;cursor:pointer;color:var(--color-text-secondary);width:40px;height:40px;display:flex;align-items:center;justify-content:center;border-radius:8px;transition:all .2s ease}.close-button:hover:not(:disabled){background:var(--color-bg-secondary);color:var(--color-text-primary)}.close-button:disabled{opacity:.5;cursor:not-allowed}.support-form{padding:2rem}.form-group{margin-bottom:1.5rem}.form-group label{display:block;margin-bottom:.5rem;font-weight:600;color:var(--color-text-primary);font-size:.95rem}.form-group select,.form-group input,.form-group textarea{width:100%;padding:.75rem;border:2px solid var(--color-border-default);border-radius:8px;font-size:1rem;font-family:inherit;transition:border-color .2s ease}.form-group select:focus,.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--color-link)}.form-group 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ease;border:none}.button:disabled{opacity:.6;cursor:not-allowed}.button-primary{background:var(--gradient-primary);color:var(--color-button-primary-text)}.button-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-lg)}.button-secondary{background:var(--color-button-secondary-bg);color:var(--color-button-secondary-text);border:2px solid var(--color-button-secondary-border)}.button-secondary:hover:not(:disabled){background:var(--color-button-secondary-hover-bg);border-color:var(--color-button-secondary-hover-border)}@media(max-width:768px){.modal-overlay{padding:10px}.modal-header{padding:1rem 1.5rem}.modal-header h2{font-size:1.5rem}.support-form{padding:1.5rem}.form-actions{flex-direction:column}.button{width:100%}}.language-switcher{padding:.5rem .75rem;border:2px solid var(--color-border-default);border-radius:8px;background-color:var(--color-surface-card);color:var(--color-text-primary);font-size:.95rem;font-family:inherit;cursor:pointer;transition:border-color .2s}.language-switcher:hover{border-color:var(--color-link)}.language-switcher:focus{outline:none;border-color:var(--color-link);box-shadow:0 0 0 3px var(--color-overlay-light)}.legal-page{min-height:100vh;background:var(--color-bg-secondary);padding:2rem 1rem}.legal-container{max-width:900px;margin:0 auto;background:var(--color-surface-card);padding:3rem;border-radius:12px;box-shadow:var(--shadow-sm)}.legal-container h1{font-size:2.5rem;color:var(--color-text-primary);margin-bottom:.5rem;border-bottom:3px solid var(--color-link);padding-bottom:1rem}.last-updated{color:var(--color-text-secondary);font-size:.9rem;margin-bottom:2rem;font-style:italic}.legal-container section{margin-bottom:2.5rem}.legal-container h2{font-size:1.75rem;color:var(--color-text-primary);margin-top:2rem;margin-bottom:1rem;border-left:4px solid var(--color-link);padding-left:1rem}.legal-container h3{font-size:1.25rem;color:var(--color-text-secondary);margin-top:1.5rem;margin-bottom:.75rem}.legal-container p{line-height:1.8;color:var(--color-text-secondary);margin-bottom:1rem}.legal-container ul{margin-left:2rem;margin-bottom:1rem}.legal-container li{line-height:1.8;color:var(--color-text-secondary);margin-bottom:.5rem}.legal-container a{color:var(--color-link);text-decoration:none;font-weight:500;transition:color .2s ease}.legal-container a:hover{color:var(--color-link-hover);text-decoration:underline}.legal-container strong{color:var(--color-text-primary);font-weight:600}.warning{background:var(--color-status-error-light);border-left:4px solid var(--color-status-error-border);padding:1rem;border-radius:4px;margin:1rem 0}.warning strong{color:var(--color-status-error-text)}.jurisdiction{background:var(--color-bg-secondary);padding:1.5rem;border-radius:8px;margin-top:2rem}.acknowledgment{background:var(--color-bg-secondary);padding:1.5rem;border-radius:8px;border:2px solid var(--color-border-dark);text-align:center}.acknowledgment p{font-weight:600;color:var(--color-text-primary);margin:0}@media(max-width:768px){.legal-container{padding:2rem 1.5rem}.legal-container h1{font-size:2rem}.legal-container h2{font-size:1.5rem}.legal-container h3{font-size:1.1rem}.legal-container ul{margin-left:1.5rem}}.invite-page{min-height:100vh;background:var(--gradient-primary);padding:2rem 1rem;display:flex;align-items:center;justify-content:center}.invite-container{max-width:800px;width:100%;background:var(--color-surface-card);border-radius:20px;padding:3rem;box-shadow:var(--shadow-xl)}.invite-hero{text-align:center;margin-bottom:3rem}.invite-icon{font-size:5rem;margin-bottom:1rem;animation:bounce 2s infinite}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.invite-title{font-size:2.5rem;color:var(--color-text-primary);margin-bottom:1rem;font-weight:800;line-height:1.2}.invite-subtitle{font-size:1.2rem;color:var(--color-text-secondary);line-height:1.6}.inviter-stats{display:flex;gap:2rem;justify-content:center;margin:2rem 0;padding:1.5rem;background:var(--color-bg-secondary);border-radius:12px;flex-wrap:wrap}.stat{display:flex;flex-direction:column;align-items:center;gap:.25rem}.stat-value{font-size:1.8rem;font-weight:700;color:var(--color-link)}.stat-label{font-size:.9rem;color:var(--color-text-secondary);font-weight:500}.invite-info{margin-bottom:3rem}.info-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem}.info-card{text-align:center;padding:1.5rem;background:var(--color-bg-secondary);border-radius:12px;transition:transform .3s ease}.info-card:hover{transform:translateY(-5px)}.info-icon{font-size:2.5rem;margin-bottom:.75rem}.info-card h3{font-size:1.1rem;color:var(--color-text-primary);margin-bottom:.5rem;font-weight:600}.info-card p{font-size:.9rem;color:var(--color-text-secondary);line-height:1.4}.invite-cta{text-align:center;margin-bottom:2rem}.cta-text{font-size:1.3rem;color:var(--color-text-primary);margin-bottom:2rem;font-weight:600}.open-app-button{background:var(--gradient-primary);color:var(--color-text-on-primary);border:none;padding:1.2rem 3rem;border-radius:12px;font-size:1.3rem;font-weight:700;cursor:pointer;transition:all .3s ease;box-shadow:var(--shadow-md);width:100%;max-width:400px}.open-app-button:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.helper-text{font-size:1rem;color:var(--color-text-secondary);margin:1.5rem 0 1rem}.download-fallback-button{background:transparent;color:var(--color-link);border:2px solid var(--color-link);padding:.8rem 2rem;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease}.download-fallback-button:hover{background:var(--color-link);color:var(--color-text-on-primary)}.download-buttons{display:flex;gap:2rem;justify-content:center;flex-wrap:wrap;margin-top:2rem}.download-button{display:inline-block;background:#fff;color:#111;padding:1rem 2rem;border-radius:12px;text-decoration:none;transition:all .3s ease;cursor:pointer;border:2px solid white}.download-button:hover{transform:translateY(-2px);box-shadow:0 8px 20px #0003;background:#f0f0f0;color:#111}.button-content{display:flex;align-items:center;gap:1rem}.button-small{font-size:.75rem;opacity:.7;color:#333}.button-large{font-size:1.5rem;font-weight:600;color:#111}.invite-instructions{text-align:center;padding-top:2rem;border-top:1px solid var(--color-border-default)}.instructions-text{font-size:.9rem;color:var(--color-text-secondary);line-height:1.6}.loading{text-align:center;font-size:1.5rem;color:var(--color-text-primary);padding:3rem}@media(max-width:768px){.invite-container{padding:2rem 1.5rem}.invite-title{font-size:1.8rem}.invite-subtitle{font-size:1rem}.info-grid{grid-template-columns:1fr}.download-buttons{flex-direction:column;align-items:center}.download-button{width:100%;max-width:300px}.open-app-button{width:100%;font-size:1.1rem}}.challenges-admin{padding:20px;max-width:1200px;margin:0 auto}.admin-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px;padding-bottom:20px;border-bottom:2px solid var(--color-border)}.admin-header h2{margin:0;color:var(--color-text-primary);font-size:28px}.subtitle{color:var(--color-text-secondary);margin:5px 0 0;font-size:14px}.header-actions{display:flex;gap:10px}.primary-btn,.secondary-btn,.danger-btn,.back-btn,.manage-btn{padding:10px 20px;border:none;border-radius:8px;cursor:pointer;font-size:14px;font-weight:600;transition:all .2s}.primary-btn{background:#3b82f6;color:#fff}.primary-btn:hover{background:#2563eb}.secondary-btn,.back-btn{background:#f3f4f6;color:#374151}.secondary-btn:hover,.back-btn:hover{background:#e5e7eb}.danger-btn{background:#ef4444;color:#fff}.danger-btn:hover{background:#dc2626}.challenges-list{display:grid;gap:20px}.challenge-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:12px;padding:20px;transition:box-shadow .2s}.challenge-card:hover{box-shadow:0 4px 12px #0000001a}.challenge-header{display:flex;align-items:flex-start;gap:15px;margin-bottom:15px}.emoji{font-size:40px}.challenge-banner-preview{width:120px;height:68px;object-fit:cover;border-radius:8px;border:2px solid var(--color-border)}.challenge-info{flex:1}.challenge-info h3{margin:0 0 5px;color:var(--color-text-primary);font-size:20px}.challenge-meta{margin:0;color:var(--color-text-secondary);font-size:14px}.status-badge{padding:4px 12px;border-radius:12px;font-size:12px;font-weight:600}.status-badge.active{background:#d1fae5;color:#065f46}.status-badge.inactive{background:#fee2e2;color:#991b1b}.challenge-description{color:var(--color-text-secondary);margin:15px 0;line-height:1.6}.challenge-dates{display:flex;gap:20px;margin:15px 0;font-size:13px;color:var(--color-text-secondary)}.manage-btn{background:#3b82f6;color:#fff;width:100%;margin-top:10px}.manage-btn:hover{background:#2563eb}.empty-state{text-align:center;padding:60px 20px;color:var(--color-text-secondary)}.challenge-form,.team-form,.prize-form{background:var(--color-surface);border:1px solid var(--color-border);border-radius:12px;padding:30px}.form-section{margin-bottom:30px}.form-section h3{margin:0 0 20px;color:var(--color-text-primary);font-size:18px;border-bottom:1px solid var(--color-border);padding-bottom:10px}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:8px;color:var(--color-text-primary);font-weight:600;font-size:14px}.form-group input,.form-group select,.form-group textarea{width:100%;padding:10px 12px;border:1px solid var(--color-border);border-radius:6px;font-size:14px;font-family:inherit;background:var(--color-background);color:var(--color-text-primary)}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #3b82f61a}.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px}.form-actions{display:flex;gap:10px;margin-top:30px;padding-top:20px;border-top:1px solid var(--color-border)}.checkbox-group{display:flex;gap:15px;flex-wrap:wrap}.checkbox-group label{display:flex;align-items:center;gap:6px;font-weight:400;margin:0}.age-range{display:flex;align-items:center;gap:10px}.age-range 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