*{margin:0;padding:0;box-sizing:border-box}:root{--primary: #00D9FF;--primary-dark: #0091EA;--secondary: #FF006E;--purple: #9D4EDD;--purple-dark: #7B2CBF;--purple-light: #C77DFF;--gold: #FFD60A;--orange: #FF9E00;--pink: #FB5607;--success: #06FFA5;--warning: #FFD60A;--error: #EF233C;--bg-dark: #1a0B2e;--bg-purple: #2D1B4E;--bg-card: #3a1f5d;--bg-card-hover: #4d2973;--text-primary: #FFFFFF;--text-secondary: #C4B5FD;--shadow: 0 4px 24px rgba(123, 44, 191, .4);--shadow-lg: 0 8px 32px rgba(123, 44, 191, .6);--shadow-glow: 0 0 30px rgba(199, 125, 255, .5);--border-radius: 16px;--transition: all .3s cubic-bezier(.4, 0, .2, 1)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background:linear-gradient(135deg,var(--bg-dark) 0%,var(--bg-purple) 50%,#1a0B3e 100%);color:var(--text-primary);min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:20px;line-height:1.6;position:relative;overflow-x:hidden}body:before{content:"";position:fixed;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle at 30% 50%,rgba(157,78,221,.15) 0%,transparent 50%),radial-gradient(circle at 70% 50%,rgba(0,217,255,.1) 0%,transparent 50%);animation:shimmer 15s ease-in-out infinite;pointer-events:none;z-index:0}@keyframes shimmer{0%,to{transform:translate(0)}50%{transform:translate(-10%,-10%)}}.app{width:100%;max-width:960px;background:var(--bg-card);border-radius:var(--border-radius);box-shadow:var(--shadow-lg),var(--shadow-glow);overflow:hidden;position:relative;z-index:1;border:2px solid rgba(199,125,255,.2)}.screen{display:none;animation:fadeIn .4s ease-in-out}.screen.active{display:block}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}.pulse{animation:pulse 2s ease-in-out infinite}.home-hero{text-align:center;padding:40px;background:linear-gradient(135deg,var(--purple-dark) 0%,var(--bg-purple) 100%);border-bottom:2px solid rgba(199,125,255,.3);position:relative;overflow:hidden}.home-hero:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at center,rgba(255,214,10,.1) 0%,transparent 70%);pointer-events:none}.hero-logo{width:120px;height:120px;margin:0 auto 20px;display:block;filter:drop-shadow(0 8px 24px rgba(199,125,255,.6));animation:float 3s ease-in-out infinite;position:relative;z-index:1}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.hero-title{font-size:clamp(2.5rem,8vw,4rem);font-weight:800;background:linear-gradient(135deg,var(--gold) 0%,var(--orange) 50%,var(--pink) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:16px;letter-spacing:-1px;text-shadow:0 0 40px rgba(255,214,10,.5);position:relative;z-index:1}.hero-subtitle{font-size:clamp(1rem,3vw,1.25rem);color:var(--text-secondary);margin-bottom:32px;line-height:1.5}.primary-btn{background:linear-gradient(135deg,var(--gold) 0%,var(--orange) 100%);color:#1a0b2e;border:none;padding:16px 48px;border-radius:50px;font-size:1.125rem;font-weight:700;cursor:pointer;transition:var(--transition);box-shadow:0 4px 20px #ff9e0080,0 0 30px #ffd60a4d;position:relative;overflow:hidden;border:2px solid rgba(255,255,255,.3)}.primary-btn:before{content:"";position:absolute;top:50%;left:50%;width:0;height:0;border-radius:50%;background:#ffffff4d;transform:translate(-50%,-50%);transition:width .6s,height .6s}.primary-btn:hover:before{width:300px;height:300px}.primary-btn:hover{transform:translateY(-2px) scale(1.05);box-shadow:0 6px 30px #ff9e00b3,0 0 40px #ffd60a80}.primary-btn span{position:relative;z-index:1}.primary-btn:active{transform:translateY(0)}.secondary-btn{background:var(--bg-card-hover);color:var(--text-primary);border:2px solid var(--purple-light);padding:14px 40px;border-radius:50px;font-size:1rem;font-weight:600;cursor:pointer;transition:var(--transition);box-shadow:0 4px 12px #9d4edd4d}.secondary-btn:hover{border-color:var(--gold);background:#ffd60a26;box-shadow:0 6px 20px #ffd60a66;transform:translateY(-2px)}.back-btn{background:transparent;color:var(--text-secondary);border:2px solid rgba(255,255,255,.1);padding:12px 32px;border-radius:50px;font-size:1rem;font-weight:600;cursor:pointer;transition:var(--transition);margin:24px auto;display:block}.back-btn:hover{border-color:var(--gold);color:var(--gold);box-shadow:0 0 20px #ffd60a4d}.home-sections{padding:40px;display:grid;gap:32px}.home-section{background:#9d4edd1a;padding:24px;border-radius:var(--border-radius);border:2px solid rgba(199,125,255,.2);box-shadow:0 4px 16px #7b2cbf33}.section-title{font-size:1.5rem;font-weight:700;margin-bottom:20px;color:var(--text-primary)}.category-preview{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px}.category-preview-card{background:var(--bg-card-hover);padding:16px 12px;border-radius:12px;text-align:center;font-size:.9rem;font-weight:600;cursor:pointer;transition:var(--transition);border:1px solid rgba(255,255,255,.05)}.category-preview-card:hover{background:linear-gradient(135deg,var(--primary) 0%,var(--purple-light) 100%);color:#1a0b2e;transform:translateY(-2px);box-shadow:0 4px 16px #00d9ff80,0 0 20px #c77dff4d}.leaderboard-preview{list-style:none;counter-reset:leaderboard}.leaderboard-preview li{background:var(--bg-card-hover);border-radius:8px;margin-bottom:8px;position:relative;padding:12px 16px 12px 48px;transition:var(--transition)}.leaderboard-preview li:hover{background:var(--bg-card);transform:translate(4px)}.leaderboard-preview li:before{counter-increment:leaderboard;content:counter(leaderboard);position:absolute;left:16px;top:50%;transform:translateY(-50%);width:24px;height:24px;background:linear-gradient(135deg,var(--primary) 0%,var(--purple-light) 100%);color:#1a0b2e;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.875rem;box-shadow:0 2px 8px #00d9ff66}.screen-header{text-align:center;padding:40px 40px 32px;background:linear-gradient(180deg,rgba(123,44,191,.3) 0%,transparent 100%);border-bottom:2px solid rgba(199,125,255,.2)}.screen-header h2{font-size:clamp(1.75rem,5vw,2.5rem);font-weight:700;margin-bottom:8px}.subtitle{color:var(--text-secondary);font-size:clamp(.9rem,2.5vw,1.125rem)}.categories{padding:32px 40px;display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:16px;max-height:60vh;overflow-y:auto}.categories::-webkit-scrollbar{width:8px}.categories::-webkit-scrollbar-track{background:#ffffff0d;border-radius:4px}.categories::-webkit-scrollbar-thumb{background:linear-gradient(180deg,var(--primary) 0%,var(--purple-light) 100%);border-radius:4px}.category-card{background:var(--bg-card-hover);padding:24px 16px;border-radius:12px;text-align:center;font-weight:600;cursor:pointer;transition:var(--transition);border:2px solid transparent;position:relative;overflow:hidden}.category-card:hover{background:linear-gradient(135deg,var(--primary) 0%,var(--purple-light) 100%);color:#1a0b2e;transform:translateY(-4px);box-shadow:0 8px 24px #00d9ff80,0 0 30px #c77dff66;border-color:var(--gold)}.category-card:active{transform:translateY(-2px)}.quiz-header{background:linear-gradient(180deg,rgba(123,44,191,.4) 0%,transparent 100%);padding:24px 32px 20px;border-bottom:2px solid rgba(199,125,255,.2)}.top-bar{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.category-badge{background:#00d9ff33;color:var(--primary);padding:8px 16px;border-radius:20px;font-size:.875rem;font-weight:600;border:2px solid var(--primary);box-shadow:0 0 15px #00d9ff66}.timer-container{display:flex;align-items:center;gap:8px;background:#ff6b6b26;padding:8px 16px;border-radius:20px;border:1px solid rgba(255,107,107,.3)}.timer-icon{font-size:1.25rem}.timer{font-size:1.125rem;font-weight:700;color:var(--error);min-width:36px}.timer.urgent{animation:pulse .5s ease-in-out infinite;color:var(--error)}.progress-bar{height:8px;background:#ffffff1a;border-radius:4px;overflow:hidden;margin-bottom:16px}.progress-fill{height:100%;background:linear-gradient(90deg,var(--primary) 0%,var(--purple-light) 50%,var(--gold) 100%);width:0%;transition:width .3s ease;border-radius:4px;box-shadow:0 0 15px #00d9ff99}.score-streak-bar{display:flex;gap:16px;justify-content:center}.score-display,.streak-display{display:flex;flex-direction:column;align-items:center;gap:4px}.score-display .label,.streak-display .label{font-size:.75rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:1px}.score-display .value,.streak-display .value{font-size:1.5rem;font-weight:700;color:var(--primary);text-shadow:0 0 20px rgba(0,217,255,.6)}.streak-display .value{color:var(--gold);text-shadow:0 0 20px rgba(255,214,10,.6)}.quiz-content{padding:40px 32px 32px;min-height:400px}.question-text{font-size:clamp(1.25rem,4vw,1.75rem);font-weight:600;margin-bottom:32px;line-height:1.4;text-align:center;color:var(--text-primary)}.options{display:grid;gap:12px;max-width:700px;margin:0 auto}.option-btn{background:var(--bg-card-hover);color:var(--text-primary);border:2px solid rgba(255,255,255,.1);padding:18px 24px;border-radius:12px;font-size:1.0625rem;font-weight:600;cursor:pointer;transition:var(--transition);text-align:left;position:relative}.option-btn:hover:not(.disabled){background:var(--bg-card);border-color:var(--gold);transform:translate(4px);box-shadow:0 4px 16px #ffd60a4d}.option-btn.correct{background:var(--success);border-color:var(--success);color:#fff;animation:correctPulse .5s ease}.option-btn.wrong{background:var(--error);border-color:var(--error);color:#fff;animation:shake .5s ease}@keyframes correctPulse{0%,to{transform:scale(1)}50%{transform:scale(1.02)}}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-8px)}75%{transform:translate(8px)}}.option-btn.disabled{cursor:not-allowed;opacity:.7}.banner-ad{min-height:60px;background:#0000004d;border-top:1px solid rgba(255,255,255,.05);display:flex;align-items:center;justify-content:center;color:var(--text-secondary);font-size:.875rem}.gameover-content{padding:60px 40px 40px;text-align:center}.gameover-icon{font-size:4rem;margin-bottom:16px;animation:bounce 1s ease}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-20px)}}.gameover-title{font-size:clamp(2rem,6vw,3rem);font-weight:700;margin-bottom:24px;background:linear-gradient(135deg,var(--pink) 0%,var(--secondary) 50%,var(--purple-light) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.final-score-container{background:linear-gradient(135deg,#9d4edd33,#00d9ff33);border:3px solid var(--gold);border-radius:var(--border-radius);padding:24px;margin-bottom:32px;display:inline-block;min-width:200px;box-shadow:0 8px 32px #ffd60a66,0 0 40px #9d4edd4d}.final-score-label{font-size:.875rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:1px;margin-bottom:8px}.final-score-value{font-size:3rem;font-weight:800;background:linear-gradient(135deg,var(--gold) 0%,var(--orange) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;text-shadow:0 0 30px rgba(255,214,10,.5)}.leaderboard-section{max-width:500px;margin:32px auto}.leaderboard-list{list-style:none;counter-reset:leaderboard;text-align:left}.leaderboard-list li{background:var(--bg-card-hover);padding:12px 16px 12px 52px;border-radius:8px;margin-bottom:8px;position:relative;font-weight:600;transition:var(--transition)}.leaderboard-list li:hover{background:var(--bg-card);transform:translate(4px)}.leaderboard-list li:before{counter-increment:leaderboard;content:counter(leaderboard);position:absolute;left:16px;top:50%;transform:translateY(-50%);width:28px;height:28px;background:linear-gradient(135deg,var(--primary) 0%,var(--purple-light) 100%);color:#1a0b2e;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.875rem;box-shadow:0 2px 12px #00d9ff80}.leaderboard-list li:nth-child(1):before{background:linear-gradient(135deg,gold,orange)}.leaderboard-list li:nth-child(2):before{background:linear-gradient(135deg,silver,#a8a8a8)}.leaderboard-list li:nth-child(3):before{background:linear-gradient(135deg,#cd7f32,#b8860b)}.gameover-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-top:32px}.fullscreen-ad{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:#000000f2;z-index:10000;align-items:center;justify-content:center}.fullscreen-ad.active{display:flex}@media (max-width: 768px){body{padding:0}.app{border-radius:0;min-height:auto}.game-footer{margin-top:0;border-radius:0}.home-hero{padding:40px 24px 32px}.home-sections{padding:24px}.categories{padding:24px;grid-template-columns:repeat(auto-fill,minmax(140px,1fr))}.quiz-header{padding:20px 20px 16px}.quiz-content{padding:32px 20px 24px}.option-btn{padding:16px 20px;font-size:1rem}.gameover-content{padding:40px 24px 32px}.gameover-actions{flex-direction:column;width:100%}.gameover-actions button{width:100%}}@media (max-width: 480px){.hero-title{font-size:2rem}.categories{grid-template-columns:repeat(auto-fill,minmax(120px,1fr))}.category-card{padding:20px 12px;font-size:.9rem}.question-text{font-size:1.125rem}.final-score-value{font-size:2.5rem}}.game-footer{background:linear-gradient(180deg,transparent 0%,rgba(123,44,191,.2) 100%);border-top:2px solid rgba(199,125,255,.3);padding:24px 20px 20px;margin-top:40px;width:100%;max-width:960px;z-index:1;position:relative}.footer-content{text-align:center}.footer-links{display:flex;flex-direction:row;flex-wrap:wrap;align-items:center;justify-content:center;gap:20px;margin-bottom:16px}.footer-links a{color:var(--text-secondary);text-decoration:none;font-size:.8125rem;font-weight:500;transition:var(--transition)}.footer-links a:hover{color:var(--gold);text-shadow:0 0 10px rgba(255,214,10,.5)}.footer-copyright{color:var(--text-secondary);font-size:.75rem;opacity:.7}.footer-copyright p{margin:0}@media (max-width: 768px){.footer-links a{font-size:.75rem}.game-footer{padding:20px 16px 16px}.footer-copyright{font-size:.6875rem}}@media (max-width: 480px){.footer-links{gap:8px}.footer-links a{font-size:.6875rem}.footer-copyright{font-size:.625rem}.game-footer{padding:16px 12px 12px}}