:root{--primary-50:#e0f7fa;--primary-100:#b2ebf2;--primary-200:#80deea;--primary-300:#4dd0e1;--primary-400:#26c6da;--primary-500:#00acc1;--primary-600:#0097a7;--primary-700:#00838f;--primary-800:#006064;--success-50:#e8f5e9;--success-100:#c8e6c9;--success-200:#a5d6a7;--success-300:#81c784;--success-400:#66bb6a;--success-500:#4caf50;--success-600:#43a047;--success-700:#388e3c;--warning-300:#fff176;--warning-400:#ffca28;--warning-500:#ffc107;--warning-600:#ffb300;--danger-300:#e57373;--danger-400:#ef5350;--danger-500:#f44336;--danger-600:#e53935;--gray-50:#fafafa;--gray-100:#f5f5f5;--gray-200:#eeeeee;--gray-300:#e0e0e0;--gray-400:#bdbdbd;--gray-500:#9e9e9e;--gray-600:#757575;--gray-700:#616161;--gray-800:#424242;--gray-900:#212121;--bg-gradient:linear-gradient(135deg,#667eea 0%,#764ba2 100%);--bg-color:var(--gray-100);--card-bg:#ffffff;--text-primary:var(--gray-900);--text-secondary:var(--gray-600);--border-color:var(--gray-300);--font-display:'Poppins',-apple-system,BlinkMacSystemFont,sans-serif;--font-body:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;--spacing-xs:4px;--spacing-sm:8px;--spacing-md:16px;--spacing-lg:24px;--spacing-xl:32px;--spacing-2xl:48px;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:24px;--radius-full:9999px;--shadow-sm:0 1px 3px rgba(0,0,0,0.1);--shadow-md:0 4px 6px rgba(0,0,0,0.1);--shadow-lg:0 10px 25px rgba(0,0,0,0.15);--shadow-xl:0 20px 40px rgba(0,0,0,0.2);--transition-fast:150ms ease;--transition-normal:250ms ease;--transition-slow:400ms ease}*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-text-size-adjust:100%}body{font-family:var(--font-body);background:var(--bg-gradient);min-height:100vh;color:var(--text-primary);line-height:1.5;overflow-x:hidden}#app{min-height:100vh;display:flex;flex-direction:column}.screen{display:none;flex:1;width:100%}.screen.active{display:flex;flex-direction:column}#splash-screen{justify-content:center;align-items:center;background:var(--bg-gradient);cursor:pointer}.splash-content{text-align:center;display:flex;flex-direction:column;align-items:center;gap:var(--spacing-lg)}.splash-logo{width:380px;height:auto;max-width:60vw;object-fit:contain;opacity:0;transform:scale(0.8);animation:splashLogoIn 1s ease-out forwards}@keyframes splashLogoIn{to{opacity:1;transform:scale(1)}}.splash-text{display:flex;flex-direction:column;gap:var(--spacing-xs)}.splash-welcome{color:rgba(255,255,255,0.9);font-size:1.2rem;font-weight:500;margin:0;opacity:0;animation:fadeInUp 0.6s ease-out 0.5s forwards}.splash-title{font-family:var(--font-display);font-size:3rem;font-weight:800;color:var(--primary-300);text-shadow:0 2px 20px rgba(77,208,225,0.5);margin:0;opacity:0;animation:fadeInUp 0.6s ease-out 1s forwards}.splash-subtitle{color:rgba(255,255,255,0.9);font-size:1.5rem;font-weight:600;margin:0;opacity:0;animation:fadeInUp 0.6s ease-out 1.5s forwards}@keyframes fadeInUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.splash-enter-btn{padding:var(--spacing-md) var(--spacing-2xl);background:rgba(255,255,255,0.15);border:2px solid rgba(255,255,255,0.3);color:white;font-size:1.2rem;font-weight:600;border-radius:var(--radius-lg);cursor:pointer;opacity:0;animation:fadeInUp 0.6s ease-out 2.5s forwards;transition:background var(--transition-fast),transform var(--transition-fast),box-shadow var(--transition-fast)}.splash-enter-btn:hover{background:rgba(255,255,255,0.25);transform:translateY(-2px);box-shadow:0 10px 30px rgba(0,0,0,0.2)}.splash-hint{color:rgba(255,255,255,0.5);font-size:0.85rem;margin:0;opacity:0;animation:fadeInUp 0.6s ease-out 3s forwards}#loading-screen{justify-content:center;align-items:center;background:var(--bg-gradient)}.loading-content{text-align:center;color:white;padding:var(--spacing-xl)}.loading-icon{font-size:72px;margin-bottom:var(--spacing-lg);animation:pulse 2s infinite}.loading-logo-img{width:100px;height:100px;object-fit:contain}.loading-title{font-family:var(--font-display);font-size:2.5rem;font-weight:700;margin-bottom:var(--spacing-sm)}.loading-subtitle{font-size:1.25rem;opacity:0.9;margin-bottom:var(--spacing-xl)}.loading-bar{width:200px;height:6px;background:rgba(255,255,255,0.3);border-radius:var(--radius-full);margin:0 auto var(--spacing-md);overflow:hidden}.loading-progress{height:100%;background:white;border-radius:var(--radius-full);width:0%;transition:width var(--transition-normal)}.loading-status{font-size:0.875rem;opacity:0.8}#menu-screen{justify-content:center;align-items:center;padding:var(--spacing-lg)}.menu-container{width:100%;max-width:480px;background:var(--card-bg);border-radius:var(--radius-xl);padding:var(--spacing-xl);box-shadow:var(--shadow-xl)}.language-selector{display:flex;justify-content:center;gap:var(--spacing-sm);margin-bottom:var(--spacing-lg)}.lang-btn{padding:var(--spacing-xs) var(--spacing-md);background:rgba(255,255,255,0.1);border:2px solid rgba(255,255,255,0.2);color:rgba(255,255,255,0.7);font-size:0.8rem;font-weight:600;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast)}.lang-btn:hover{background:rgba(255,255,255,0.2);color:white}.lang-btn.active{background:rgba(255,255,255,0.25);border-color:rgba(255,255,255,0.5);color:white}.menu-header{text-align:center;margin-bottom:var(--spacing-xl)}.logo{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--spacing-md);margin-bottom:var(--spacing-sm)}.logo .brain-icon{font-size:2.5rem}.menu-logo-img{width:250px;height:auto;max-width:60vw;object-fit:contain}.logo h1{font-family:var(--font-display);font-size:2rem;font-weight:700;background:var(--bg-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.tagline{color:var(--text-secondary);font-size:1rem;font-style:italic}.stats-card{background:var(--gray-50);border-radius:var(--radius-lg);padding:var(--spacing-lg);margin-bottom:var(--spacing-xl)}.stats-card h3{font-family:var(--font-display);font-size:1rem;color:var(--text-secondary);margin-bottom:var(--spacing-md);display:flex;align-items:center;gap:var(--spacing-xs)}.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--spacing-md)}.stat-item{text-align:center}.stat-value{display:block;font-family:var(--font-display);font-size:1.5rem;font-weight:700;color:var(--primary-600)}.stat-label{font-size:0.75rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:0.5px}.difficulty-section{margin-bottom:var(--spacing-lg)}.difficulty-section h3{font-size:0.875rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:0.5px;margin-bottom:var(--spacing-md);text-align:center}.difficulty-buttons{display:flex;gap:var(--spacing-sm)}.difficulty-btn{flex:1;display:flex;flex-direction:column;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-md);background:var(--gray-100);border:2px solid transparent;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast)}.difficulty-btn:hover{background:var(--gray-200)}.difficulty-btn.active{background:var(--primary-50);border-color:var(--primary-500)}.diff-icon{font-size:1.5rem}.diff-name{font-weight:600;color:var(--text-primary)}.diff-time{font-size:0.75rem;color:var(--text-secondary)}.settings-row{display:flex;gap:var(--spacing-sm);margin-bottom:var(--spacing-lg)}.setting-btn{flex:1;display:flex;align-items:center;justify-content:center;gap:var(--spacing-xs);padding:var(--spacing-md);background:var(--gray-100);border:none;border-radius:var(--radius-md);font-size:0.875rem;cursor:pointer;transition:background var(--transition-fast)}.setting-btn:hover{background:var(--gray-200)}.setting-btn .icon{font-size:1.25rem}.start-btn{width:100%;display:flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-lg);background:var(--bg-gradient);color:white;border:none;border-radius:var(--radius-lg);font-family:var(--font-display);font-size:1.25rem;font-weight:700;cursor:pointer;transition:transform var(--transition-fast),box-shadow var(--transition-fast);box-shadow:var(--shadow-md)}.start-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.start-btn:active{transform:translateY(0)}.category-section{margin-top:var(--spacing-lg);padding-top:var(--spacing-lg);border-top:1px solid var(--border-color)}.category-section h4{font-size:0.75rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:0.5px;margin-bottom:var(--spacing-sm);text-align:center}.category-toggles{display:flex;justify-content:center;gap:var(--spacing-lg)}.category-toggle{display:flex;align-items:center;gap:var(--spacing-xs);cursor:pointer;font-size:0.875rem}.category-toggle input{width:18px;height:18px;accent-color:var(--primary-500)}#game-screen{padding:var(--spacing-md);background:var(--bg-gradient)}.game-header{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-md);background:var(--card-bg);border-radius:var(--radius-lg);margin-bottom:var(--spacing-md);box-shadow:var(--shadow-md)}.game-stat{display:flex;flex-direction:column;align-items:center}.game-stat-label{font-size:0.625rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:0.5px}.game-stat-value{font-family:var(--font-display);font-size:1.5rem;font-weight:700;color:var(--primary-600)}.streak-stat{display:flex;align-items:center;gap:var(--spacing-xs)}.streak-icon{font-size:1.25rem}.streak-stat.on-fire .streak-icon{animation:shake 0.5s infinite}.diff-badge{padding:var(--spacing-xs) var(--spacing-sm);background:var(--gray-200);border-radius:var(--radius-full);font-size:0.625rem;font-weight:600;text-transform:uppercase;letter-spacing:0.5px}.diff-badge.easy{background:var(--success-100);color:var(--success-700)}.diff-badge.medium{background:var(--warning-300);color:var(--gray-800)}.diff-badge.hard{background:var(--danger-300);color:white}.game-instruction{text-align:center;padding:var(--spacing-sm);color:white;font-size:1.125rem}.game-instruction .highlight{color:var(--success-300);font-weight:700}.sparkle{display:inline-block;animation:sparkle 1s infinite}.timer-container{display:flex;align-items:center;justify-content:center;gap:var(--spacing-md);margin-bottom:var(--spacing-md)}.timer-bar-bg{flex:1;max-width:300px;height:12px;background:rgba(255,255,255,0.2);border-radius:var(--radius-full);overflow:hidden}.timer-bar{height:100%;background:var(--success-400);border-radius:var(--radius-full);transition:width 50ms linear,background-color var(--transition-fast)}.timer-bar.warning{background:var(--warning-400)}.timer-bar.danger{background:var(--danger-400)}.timer-text{font-family:var(--font-display);font-size:1.25rem;font-weight:700;color:white;min-width:60px;text-align:center}.timer-text.warning{color:var(--warning-300)}.timer-text.danger{color:var(--danger-300)}.timer-container.pulsing .timer-text{animation:pulse 0.5s infinite}.images-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--spacing-md);max-width:800px;margin:0 auto}.image-card{position:relative;aspect-ratio:4 / 3;background:var(--card-bg);border-radius:var(--radius-lg);overflow:hidden;cursor:pointer;box-shadow:var(--shadow-md);transition:transform var(--transition-fast),box-shadow var(--transition-fast)}.image-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.image-wrapper{position:relative;width:100%;height:100%}.game-image{width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity var(--transition-normal)}.image-card.loaded .game-image{opacity:1}.image-loading{position:absolute;top:0;left:0;right:0;bottom:0;display:flex;align-items:center;justify-content:center;background:var(--gray-100)}.spinner{width:32px;height:32px;border:3px solid var(--gray-300);border-top-color:var(--primary-500);border-radius:50%;animation:spin 0.8s linear infinite}.image-card.correct{box-shadow:0 0 0 4px var(--success-400),var(--shadow-lg)}.image-card.wrong{animation:shake 0.5s;box-shadow:0 0 0 4px var(--danger-400),var(--shadow-lg)}.image-card.reveal{transform:scale(1.02)}.menu-btn{position:fixed;bottom:var(--spacing-lg);left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-sm) var(--spacing-lg);background:rgba(255,255,255,0.9);border:none;border-radius:var(--radius-full);font-size:0.875rem;cursor:pointer;box-shadow:var(--shadow-md);transition:background var(--transition-fast)}.menu-btn:hover{background:white}.overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,0.7);display:none;align-items:center;justify-content:center;z-index:1000;padding:var(--spacing-lg);backdrop-filter:blur(4px)}.overlay.active{display:flex;animation:fadeIn var(--transition-fast)}.feedback-card{background:var(--card-bg);border-radius:var(--radius-xl);padding:var(--spacing-xl);text-align:center;max-width:400px;width:100%;box-shadow:var(--shadow-xl);animation:scaleIn var(--transition-normal)}.feedback-content{padding:var(--spacing-md)}.feedback-emoji{font-size:3rem;margin-bottom:var(--spacing-md)}.feedback-title{font-family:var(--font-display);font-size:2rem;font-weight:700;margin-bottom:var(--spacing-md)}.feedback-content.correct .feedback-title{color:var(--success-500)}.feedback-content.wrong .feedback-title,.feedback-content.timeout .feedback-title{color:var(--danger-500)}.feedback-points{display:flex;flex-direction:column;gap:var(--spacing-xs);margin-bottom:var(--spacing-md)}.base-points{font-size:1.5rem;font-weight:700;color:var(--success-500)}.bonus-points{font-size:1rem;color:var(--warning-500)}.feedback-streak{display:flex;align-items:center;justify-content:center;gap:var(--spacing-xs);font-size:1.125rem;color:var(--gray-700)}.fire-icon{font-size:1.5rem}.feedback-text{color:var(--text-secondary);margin-bottom:var(--spacing-sm)}.feedback-encourage{font-size:1.125rem;color:var(--primary-500)}.feedback-insight{margin-top:var(--spacing-lg);padding:var(--spacing-md);background:var(--primary-50);border-radius:var(--radius-md);color:var(--primary-700);font-style:italic}.summary-card{background:var(--card-bg);border-radius:var(--radius-xl);padding:var(--spacing-xl);text-align:center;max-width:400px;width:100%;box-shadow:var(--shadow-xl);animation:scaleIn var(--transition-normal)}.summary-card h2{font-family:var(--font-display);font-size:1.5rem;margin-bottom:var(--spacing-lg);display:flex;align-items:center;justify-content:center;gap:var(--spacing-sm)}.summary-stats{background:var(--gray-50);border-radius:var(--radius-lg);padding:var(--spacing-lg);margin-bottom:var(--spacing-lg)}.summary-row{display:flex;justify-content:space-between;padding:var(--spacing-sm) 0;border-bottom:1px solid var(--border-color)}.summary-row:last-child{border-bottom:none}.summary-row.highlight{font-weight:700;color:var(--success-600)}.achievement-unlocked{background:linear-gradient(135deg,#ffd700 0%,#ffb300 100%);border-radius:var(--radius-lg);padding:var(--spacing-lg);margin-bottom:var(--spacing-lg);color:var(--gray-900)}.achievement-unlocked .trophy{font-size:2rem;display:block;margin-bottom:var(--spacing-sm)}.achievement-text{font-size:0.875rem;text-transform:uppercase;letter-spacing:0.5px;opacity:0.8}.achievement-name{font-family:var(--font-display);font-size:1.125rem;font-weight:700;margin-top:var(--spacing-xs)}.summary-buttons{display:flex;gap:var(--spacing-md)}.btn-primary,.btn-secondary{flex:1;padding:var(--spacing-md);border:none;border-radius:var(--radius-md);font-size:1rem;font-weight:600;cursor:pointer;transition:transform var(--transition-fast)}.btn-primary{background:var(--bg-gradient);color:white}.btn-secondary{background:var(--gray-200);color:var(--text-primary)}.btn-primary:hover,.btn-secondary:hover{transform:translateY(-2px)}.achievement-toast{position:fixed;top:var(--spacing-lg);right:var(--spacing-lg);display:flex;align-items:center;gap:var(--spacing-md);background:linear-gradient(135deg,#ffd700 0%,#ffb300 100%);padding:var(--spacing-md) var(--spacing-lg);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);transform:translateX(120%);transition:transform var(--transition-normal);z-index:2000}.achievement-toast.show{transform:translateX(0)}.achievement-icon{font-size:2rem}.achievement-info{display:flex;flex-direction:column}.achievement-label{font-size:0.625rem;text-transform:uppercase;letter-spacing:0.5px;opacity:0.8}.achievement-title{font-family:var(--font-display);font-weight:700}#particles-canvas{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:3000}#score-popups{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:2500}.score-popup{position:absolute;font-family:var(--font-display);font-size:1.5rem;font-weight:700;color:var(--success-400);text-shadow:0 2px 4px rgba(0,0,0,0.2);opacity:1;transform:translateY(0);transition:opacity 1s,transform 1s}.score-popup.animate{opacity:0;transform:translateY(-50px)}.score-popup.bonus{color:var(--warning-400)}.game-footer{width:100%;max-width:500px;margin:var(--spacing-xl) auto 0;padding:var(--spacing-lg);background:rgba(255,255,255,0.1);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-radius:var(--radius-lg);border:1px solid rgba(255,255,255,0.2);text-align:center;display:none}.game-footer.visible{display:block}.footer-content{display:flex;flex-direction:column;align-items:center;gap:var(--spacing-sm)}.footer-collab,.footer-support{color:rgba(255,255,255,0.9);font-size:0.9rem;font-weight:500;margin:0}.footer-support{margin-top:var(--spacing-md)}.footer-email{color:white;font-size:1rem;font-weight:600;text-decoration:none;padding:var(--spacing-xs) var(--spacing-md);background:rgba(255,255,255,0.15);border-radius:var(--radius-md);transition:background var(--transition-fast),transform var(--transition-fast)}.footer-email:hover{background:rgba(255,255,255,0.25);transform:translateY(-2px)}.kofi-btn{display:inline-flex;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-sm) var(--spacing-lg);background:var(--bg-gradient);color:white;font-size:1rem;font-weight:600;text-decoration:none;border-radius:var(--radius-md);box-shadow:var(--shadow-md);transition:transform var(--transition-fast),box-shadow var(--transition-fast)}.kofi-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.kofi-btn:active{transform:translateY(0)}.footer-legal{margin-top:var(--spacing-md);padding-top:var(--spacing-md);border-top:1px solid rgba(255,255,255,0.2);width:100%}.footer-legal p{color:rgba(255,255,255,0.7);font-size:0.75rem;margin:0;line-height:1.5}@media (max-width:768px){.splash-logo{width:300px;max-width:70vw}.splash-title{font-size:2.2rem}.splash-subtitle{font-size:1.2rem}.menu-container{padding:var(--spacing-lg)}.logo h1{font-size:1.5rem}.stats-grid{gap:var(--spacing-sm)}.stat-value{font-size:1.25rem}.difficulty-buttons{flex-direction:column}.game-header{padding:var(--spacing-sm)}.game-stat-value{font-size:1.25rem}.images-grid{gap:var(--spacing-sm)}.image-card{border-radius:var(--radius-md)}.feedback-title{font-size:1.5rem}.game-footer{margin:var(--spacing-lg) auto 0;padding:var(--spacing-md)}.footer-collab,.footer-support{font-size:0.8rem}.footer-email{font-size:0.9rem}.kofi-btn{font-size:0.9rem;padding:var(--spacing-xs) var(--spacing-md)}}@media (max-width:480px){#game-screen{padding:var(--spacing-sm)}.game-instruction{font-size:1rem}.timer-text{font-size:1rem}.game-footer{margin:var(--spacing-md) auto 0;padding:var(--spacing-sm)}.footer-legal p{font-size:0.65rem}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@keyframes fadeIn{from{opacity:0}to{opacity:1}}@keyframes fadeOut{from{opacity:1}to{opacity:0}}@keyframes scaleIn{from{opacity:0;transform:scale(0.9)}to{opacity:1;transform:scale(1)}}@keyframes scaleOut{from{opacity:1;transform:scale(1)}to{opacity:0;transform:scale(0.9)}}@keyframes slideUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes slideDown{from{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInRight{from{opacity:0;transform:translateX(30px)}to{opacity:1;transform:translateX(0)}}@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.05)}}@keyframes strongPulse{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(1.1);opacity:0.8}}@keyframes shake{0%,100%{transform:translateX(0)}10%,30%,50%,70%,90%{transform:translateX(-5px)}20%,40%,60%,80%{transform:translateX(5px)}}@keyframes bounce{0%,20%,53%,100%{transform:translateY(0)}40%{transform:translateY(-15px)}43%{transform:translateY(-15px)}70%{transform:translateY(-7px)}80%{transform:translateY(0)}90%{transform:translateY(-3px)}}@keyframes spin{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}@keyframes sparkle{0%,100%{transform:scale(1) rotate(0deg);opacity:1}25%{transform:scale(1.2) rotate(10deg);opacity:0.8}50%{transform:scale(1) rotate(0deg);opacity:1}75%{transform:scale(1.2) rotate(-10deg);opacity:0.8}}@keyframes glow{0%,100%{box-shadow:0 0 5px rgba(102,126,234,0.5),0 0 10px rgba(102,126,234,0.3)}50%{box-shadow:0 0 20px rgba(102,126,234,0.8),0 0 40px rgba(102,126,234,0.5)}}@keyframes successGlow{0%,100%{box-shadow:0 0 5px rgba(76,175,80,0.5),0 0 10px rgba(76,175,80,0.3)}50%{box-shadow:0 0 20px rgba(76,175,80,0.8),0 0 40px rgba(76,175,80,0.5)}}@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes popIn{0%{transform:scale(0);opacity:0}50%{transform:scale(1.1)}100%{transform:scale(1);opacity:1}}@keyframes flipNumber{0%{transform:rotateX(0)}50%{transform:rotateX(90deg)}100%{transform:rotateX(0)}}@keyframes celebration{0%{transform:scale(1)}25%{transform:scale(1.1) rotate(-3deg)}50%{transform:scale(1.1) rotate(3deg)}75%{transform:scale(1.1) rotate(-3deg)}100%{transform:scale(1)}}@keyframes timerWarning{0%,100%{background-color:var(--warning-400)}50%{background-color:var(--warning-500)}}@keyframes timerDanger{0%,100%{background-color:var(--danger-400);transform:scaleX(1)}50%{background-color:var(--danger-500);transform:scaleX(1.02)}}.animate-fade-in{animation:fadeIn 0.3s ease forwards}.animate-fade-out{animation:fadeOut 0.3s ease forwards}.animate-scale-in{animation:scaleIn 0.3s ease forwards}.animate-slide-up{animation:slideUp 0.3s ease forwards}.animate-slide-down{animation:slideDown 0.3s ease forwards}.animate-pulse{animation:pulse 2s infinite}.animate-shake{animation:shake 0.5s ease}.animate-bounce{animation:bounce 1s ease}.animate-spin{animation:spin 1s linear infinite}.animate-glow{animation:glow 2s infinite}.animate-float{animation:float 3s ease-in-out infinite}.animate-pop-in{animation:popIn 0.3s ease forwards}.image-card{transition:transform 0.2s ease,box-shadow 0.2s ease}.image-card:hover{transform:translateY(-4px) scale(1.02);box-shadow:0 8px 20px rgba(0,0,0,0.15)}.image-card.loaded{animation:fadeIn 0.3s ease}.image-card.correct{animation:successGlow 0.5s ease-in-out 3}.image-card.wrong{animation:shake 0.5s ease}.image-card .game-image{transition:opacity 0.3s ease,transform 0.3s ease}.image-card:hover .game-image{transform:scale(1.05)}.start-btn,.btn-primary,.btn-secondary,.difficulty-btn,.setting-btn{transition:transform 0.15s ease,box-shadow 0.15s ease,background-color 0.15s ease}.start-btn:active,.btn-primary:active,.btn-secondary:active{transform:scale(0.98)}.difficulty-btn.active{animation:popIn 0.2s ease}.streak-stat.on-fire .game-stat-value{animation:pulse 0.5s infinite;color:#ff6b35}.streak-stat.on-fire .streak-icon{animation:shake 0.5s infinite}.game-stat-value.updating{animation:flipNumber 0.3s ease}.timer-bar.warning{animation:timerWarning 1s infinite}.timer-bar.danger{animation:timerDanger 0.5s infinite}.timer-container.pulsing .timer-text{animation:strongPulse 0.5s infinite}#feedback-overlay.active .feedback-card{animation:scaleIn 0.3s ease}.feedback-emoji{animation:celebration 0.5s ease}.feedback-content.correct .feedback-title{animation:popIn 0.3s ease 0.1s both}.feedback-streak{animation:slideUp 0.3s ease 0.2s both}.feedback-points .base-points{animation:popIn 0.3s ease 0.15s both}.feedback-points .bonus-points{animation:slideInRight 0.3s ease 0.25s both}.achievement-toast.show{animation:slideInRight 0.4s ease}.achievement-unlocked{animation:glow 2s infinite}.achievement-unlocked .trophy{animation:bounce 1s ease infinite}.loading-icon .brain-icon{animation:pulse 2s ease-in-out infinite}.loading-progress{transition:width 0.3s ease}.stats-card:hover,.summary-stats:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,0,0,0.1);transition:transform 0.2s ease,box-shadow 0.2s ease}button:active{transform:scale(0.98)}.transition-fast{transition:all 0.15s ease}.transition-normal{transition:all 0.25s ease}.transition-slow{transition:all 0.4s ease}@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:0.01ms !important;animation-iteration-count:1 !important;transition-duration:0.01ms !important}}:root{}body.dark-theme{--bg-gradient:linear-gradient(135deg,#1a1a2e 0%,#16213e 100%);--bg-color:#121212;--card-bg:#1e1e1e;--text-primary:#ffffff;--text-secondary:#b0b0b0;--border-color:#333333;--gray-50:#2a2a2a;--gray-100:#333333;--gray-200:#424242;--gray-300:#555555;--gray-400:#757575;--gray-500:#9e9e9e;--gray-600:#b0b0b0;--gray-700:#cccccc;--gray-800:#e0e0e0;--gray-900:#ffffff}body.dark-theme .menu-container{background:var(--card-bg);box-shadow:0 20px 40px rgba(0,0,0,0.4)}body.dark-theme .stats-card{background:rgba(255,255,255,0.05)}body.dark-theme .difficulty-btn{background:rgba(255,255,255,0.08)}body.dark-theme .difficulty-btn:hover{background:rgba(255,255,255,0.12)}body.dark-theme .difficulty-btn.active{background:rgba(0,172,193,0.2);border-color:var(--primary-400)}body.dark-theme .setting-btn{background:rgba(255,255,255,0.08)}body.dark-theme .setting-btn:hover{background:rgba(255,255,255,0.12)}body.dark-theme .category-toggle span{color:var(--text-secondary)}body.dark-theme .game-header{background:var(--card-bg)}body.dark-theme .image-card{background:var(--card-bg)}body.dark-theme .image-loading{background:var(--gray-100)}body.dark-theme .spinner{border-color:var(--gray-400);border-top-color:var(--primary-400)}body.dark-theme .menu-btn{background:rgba(30,30,30,0.95);color:var(--text-primary)}body.dark-theme .menu-btn:hover{background:var(--card-bg)}body.dark-theme .feedback-card,body.dark-theme .summary-card{background:var(--card-bg)}body.dark-theme .summary-stats{background:rgba(255,255,255,0.05)}body.dark-theme .summary-row{border-bottom-color:var(--border-color)}body.dark-theme .feedback-insight{background:rgba(0,172,193,0.15);color:var(--primary-300)}body.dark-theme .btn-secondary{background:rgba(255,255,255,0.1);color:var(--text-primary)}body.dark-theme .btn-secondary:hover{background:rgba(255,255,255,0.15)}body.dark-theme .logo h1{background:linear-gradient(135deg,#64b5f6 0%,#e040fb 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}body.dark-theme .diff-badge{background:rgba(255,255,255,0.1);color:var(--text-primary)}body.dark-theme .diff-badge.easy{background:rgba(76,175,80,0.3);color:var(--success-300)}body.dark-theme .diff-badge.medium{background:rgba(255,193,7,0.3);color:var(--warning-300)}body.dark-theme .diff-badge.hard{background:rgba(244,67,54,0.3);color:var(--danger-300)}body.dark-theme .timer-bar-bg{background:rgba(255,255,255,0.1)}body.dark-theme::-webkit-scrollbar{width:8px}body.dark-theme::-webkit-scrollbar-track{background:var(--bg-color)}body.dark-theme::-webkit-scrollbar-thumb{background:var(--gray-400);border-radius:4px}body.dark-theme::-webkit-scrollbar-thumb:hover{background:var(--gray-500)}@media (prefers-contrast:high){:root{--border-color:#000000}.image-card{border:3px solid var(--gray-800)}.image-card.correct{border-color:var(--success-600);box-shadow:none}.image-card.wrong{border-color:var(--danger-600);box-shadow:none}button{border:2px solid currentColor}}@media (prefers-color-scheme:dark){}body.colorblind-mode{}body.colorblind-mode .image-card.correct::after{content:'\2714';position:absolute;top:10px;right:10px;font-size:2rem;color:white;text-shadow:0 0 3px black}body.colorblind-mode .image-card.wrong::after{content:'\2718';position:absolute;top:10px;right:10px;font-size:2rem;color:white;text-shadow:0 0 3px black}body.colorblind-mode .timer-bar.warning{background:repeating-linear-gradient( 45deg,var(--warning-400),var(--warning-400) 10px,var(--warning-500) 10px,var(--warning-500) 20px )}body.colorblind-mode .timer-bar.danger{background:repeating-linear-gradient( 45deg,var(--danger-400),var(--danger-400) 5px,var(--danger-500) 5px,var(--danger-500) 10px )}@media print{body{background:white !important}.screen:not(.active),#particles-canvas,.overlay,button{display:none !important}.stats-card,.summary-stats{border:1px solid #ccc;box-shadow:none}}.daily-challenge-card{background:linear-gradient(145deg,rgba(102,126,234,0.15),rgba(118,75,162,0.1));border:1px solid rgba(102,126,234,0.3);border-radius:var(--radius-lg);padding:var(--spacing-lg);margin-bottom:var(--spacing-lg)}.daily-header{display:flex;align-items:center;gap:var(--spacing-md);margin-bottom:var(--spacing-md)}.daily-icon{font-size:2rem}.daily-title-section{flex:1}.daily-title{color:var(--primary-600);font-size:1.1rem;font-weight:600;margin:0}.daily-date{color:var(--text-secondary);font-size:0.8rem;margin:0}.streak-badge{background:linear-gradient(135deg,#ff6b35,#f7931e);padding:0.25rem 0.75rem;border-radius:var(--radius-full);font-weight:bold;font-size:0.9rem;color:white}.daily-content{text-align:center;margin-bottom:var(--spacing-md)}.daily-content p{color:var(--text-secondary);font-size:0.85rem;margin:0.25rem 0}.daily-desc{margin-bottom:var(--spacing-sm)}.attempts-info{color:var(--primary-500) !important;font-weight:500}.reset-timer{display:inline-flex;align-items:center;gap:0.5rem;padding:0.35rem 0.75rem;background:rgba(0,0,0,0.1);border-radius:var(--radius-sm);font-size:0.8rem;margin-top:var(--spacing-sm)}.play-daily-btn{width:100%;padding:0.875rem;background:linear-gradient(135deg,#667eea,#764ba2);border:none;border-radius:var(--radius-md);color:white;font-weight:600;font-size:1rem;cursor:pointer;transition:transform var(--transition-fast),box-shadow var(--transition-fast)}.play-daily-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 4px 20px rgba(102,126,234,0.4)}.play-daily-btn:disabled{opacity:0.6;cursor:not-allowed}.daily-score{text-align:center;padding:var(--spacing-md);background:rgba(0,0,0,0.1);border-radius:var(--radius-md);margin-top:var(--spacing-md)}.daily-score .score-label{display:block;color:var(--text-secondary);font-size:0.75rem;text-transform:uppercase}.daily-score .score-value{display:block;font-size:2rem;font-weight:bold;color:var(--success-500)}.achievement-progress{display:flex;align-items:center;gap:var(--spacing-sm);margin-top:var(--spacing-md);padding-top:var(--spacing-md);border-top:1px solid var(--border-color)}.ach-label{font-size:0.75rem;color:var(--text-secondary);white-space:nowrap}.ach-bar{flex:1;height:8px;background:var(--gray-200);border-radius:var(--radius-full);overflow:hidden}.ach-bar-fill{height:100%;background:linear-gradient(135deg,#ffd700,#ffb300);border-radius:var(--radius-full);transition:width var(--transition-normal);width:0%}.ach-count{font-size:0.75rem;font-weight:600;color:var(--text-secondary)}.share-section{margin-top:var(--spacing-lg);padding-top:var(--spacing-lg);border-top:1px solid var(--border-color);text-align:center}.share-title{color:var(--primary-600);font-size:1.1rem;margin:0 0 0.25rem 0}.share-subtitle{color:var(--text-secondary);font-size:0.85rem;margin:0 0 var(--spacing-md) 0}.share-buttons{display:flex;flex-wrap:wrap;justify-content:center;gap:0.5rem}.share-btn{display:flex;align-items:center;gap:0.4rem;padding:0.5rem 0.75rem;border:none;border-radius:var(--radius-md);font-size:0.8rem;font-weight:500;cursor:pointer;transition:transform var(--transition-fast),box-shadow var(--transition-fast)}.share-btn:hover{transform:translateY(-2px)}.share-btn.twitter{background:#000;color:#fff;border:1px solid #333}.share-btn.facebook{background:#1877f2;color:#fff}.share-btn.whatsapp{background:#25d366;color:#fff}.share-btn.linkedin{background:#0a66c2;color:#fff}.share-btn.telegram{background:#0088cc;color:#fff}.share-btn.copy{background:var(--gray-200);color:var(--text-primary);border:1px solid var(--border-color)}.cookie-banner{position:fixed;bottom:0;left:0;right:0;background:linear-gradient(145deg,#1a1a2e,#16213e);border-top:1px solid rgba(102,126,234,0.3);padding:var(--spacing-md);display:none;align-items:center;justify-content:center;flex-wrap:wrap;gap:var(--spacing-md);z-index:999}.cookie-banner.show{display:flex}.cookie-icon{font-size:1.5rem}.cookie-message{color:rgba(255,255,255,0.8);font-size:0.85rem;margin:0;flex:1;min-width:200px;text-align:center}.cookie-actions{display:flex;gap:0.5rem}.cookie-learn{padding:0.5rem 1rem;background:transparent;border:1px solid rgba(255,255,255,0.2);border-radius:var(--radius-md);color:rgba(255,255,255,0.7);cursor:pointer;font-size:0.85rem;transition:background var(--transition-fast)}.cookie-learn:hover{background:rgba(255,255,255,0.1)}.cookie-accept{padding:0.5rem 1.5rem;background:linear-gradient(135deg,#667eea,#764ba2);border:none;border-radius:var(--radius-md);color:#fff;font-weight:600;cursor:pointer;font-size:0.85rem;transition:transform var(--transition-fast)}.cookie-accept:hover{transform:translateY(-1px)}.legal-modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.8);display:none;align-items:center;justify-content:center;z-index:1000;padding:var(--spacing-md);backdrop-filter:blur(4px)}.legal-modal-overlay.show{display:flex}.legal-modal{background:var(--card-bg);border:1px solid var(--border-color);border-radius:var(--radius-xl);max-width:700px;max-height:80vh;width:100%;display:flex;flex-direction:column;box-shadow:var(--shadow-xl)}.legal-modal-header{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-lg);border-bottom:1px solid var(--border-color)}.legal-modal-header h2{color:var(--primary-600);margin:0;font-size:1.25rem}.close-btn{background:none;border:none;color:var(--text-secondary);font-size:2rem;cursor:pointer;line-height:1;padding:0;transition:color var(--transition-fast)}.close-btn:hover{color:var(--text-primary)}.legal-modal-content{padding:var(--spacing-lg);overflow-y:auto;color:var(--text-secondary);font-size:0.9rem;line-height:1.7}.legal-modal-content h3{color:var(--text-primary);margin-top:var(--spacing-lg);margin-bottom:var(--spacing-sm);font-size:1rem}.legal-modal-content h4{color:var(--primary-600);margin-top:var(--spacing-md);font-size:0.9rem}.legal-modal-content a{color:var(--primary-500)}.legal-modal-content ul{margin-left:var(--spacing-lg);margin-top:var(--spacing-sm)}.legal-modal-content li{margin-bottom:var(--spacing-xs)}.legal-modal-footer{padding:var(--spacing-md) var(--spacing-lg);border-top:1px solid var(--border-color)}.legal-close-btn{width:100%;padding:0.75rem;background:linear-gradient(135deg,#667eea,#764ba2);border:none;border-radius:var(--radius-md);color:#fff;font-weight:600;cursor:pointer;transition:transform var(--transition-fast)}.legal-close-btn:hover{transform:translateY(-1px)}.legal-links{display:flex;justify-content:center;flex-wrap:wrap;gap:0.5rem;margin:var(--spacing-md) 0}.legal-link{background:none;border:none;color:rgba(255,255,255,0.5);font-size:0.75rem;cursor:pointer;padding:0;transition:color var(--transition-fast)}.legal-link:hover{color:rgba(255,255,255,0.8)}.legal-links span{color:rgba(255,255,255,0.3)}.achievement-toast-new{position:fixed;top:var(--spacing-lg);right:-300px;display:flex;align-items:center;gap:0.75rem;padding:0.875rem 1.25rem;background:linear-gradient(135deg,#667eea,#764ba2);border-radius:var(--radius-lg);box-shadow:0 4px 20px rgba(102,126,234,0.4);z-index:2100;transition:right 0.4s ease-out;min-width:250px;color:white}.achievement-toast-new.show{right:var(--spacing-lg)}.ach-toast-icon{font-size:2rem;animation:bounce 0.5s ease-out}.ach-toast-info{display:flex;flex-direction:column}.ach-toast-label{font-size:0.7rem;text-transform:uppercase;opacity:0.8;font-weight:600}.ach-toast-name{font-weight:700;font-size:0.95rem}@keyframes bounce{0%,100%{transform:scale(1)}50%{transform:scale(1.2)}}.dark-theme .daily-challenge-card{background:linear-gradient(145deg,rgba(102,126,234,0.2),rgba(118,75,162,0.15));border-color:rgba(102,126,234,0.4)}.dark-theme .daily-title{color:var(--primary-300)}.dark-theme .reset-timer{background:rgba(255,255,255,0.1)}.dark-theme .daily-score{background:rgba(255,255,255,0.1)}.dark-theme .achievement-progress{border-color:rgba(255,255,255,0.1)}.dark-theme .ach-bar{background:rgba(255,255,255,0.1)}.dark-theme .share-section{border-color:rgba(255,255,255,0.1)}.dark-theme .share-title{color:var(--primary-300)}.dark-theme .share-btn.copy{background:rgba(255,255,255,0.1);color:white;border-color:rgba(255,255,255,0.2)}.dark-theme .legal-modal{background:#1a1a2e;border-color:rgba(102,126,234,0.3)}.dark-theme .legal-modal-header{border-color:rgba(255,255,255,0.1)}.dark-theme .legal-modal-header h2{color:var(--primary-300)}.dark-theme .close-btn{color:rgba(255,255,255,0.5)}.dark-theme .close-btn:hover{color:white}.dark-theme .legal-modal-content{color:rgba(255,255,255,0.7)}.dark-theme .legal-modal-content h3{color:white}.dark-theme .legal-modal-content h4{color:var(--primary-300)}.dark-theme .legal-modal-footer{border-color:rgba(255,255,255,0.1)}@media (max-width:768px){.daily-header{flex-wrap:wrap}.streak-badge{margin-left:auto}.share-buttons{gap:0.4rem}.share-btn{padding:0.4rem 0.6rem;font-size:0.75rem}.cookie-banner{flex-direction:column;text-align:center;padding:var(--spacing-md)}.cookie-message{min-width:auto}.legal-modal{max-height:90vh;margin:var(--spacing-sm)}.achievement-toast-new{right:-100%;left:var(--spacing-md);width:calc(100% - var(--spacing-xl));min-width:auto}.achievement-toast-new.show{right:var(--spacing-md)}}@media (max-width:480px){.daily-challenge-card{padding:var(--spacing-md)}.share-buttons{justify-content:center}.share-btn span:last-child:not(.copy-text){display:none}.share-btn{padding:0.5rem}}