:root{--primary:#ff5e00;--secondary:#ff2a00;--accent:#ff9600;--dark:#0a0a0a;--dark-card:#151515;--light-gray:#f8f9fa;--medium-gray:#6c757d;--success:#10b981;--error:#ef4444}*{margin:0;padding:0;box-sizing:border-box}body,html{overflow-x:hidden;width:100%;max-width:100vw}body{font-family:Inter,sans-serif;background:#fff;color:#1a1a1a;min-width:320px;transition:background .3s,color .3s}body.dark-mode{background:#0a0a0a;color:#e0e0e0}body.dark-mode .announcement-bar{background:linear-gradient(90deg,#cc4a00,#c70)}body.dark-mode header{background:rgba(21,21,21,.95);border-bottom:1px solid rgba(255,255,255,.1)}body.dark-mode nav a{color:#e0e0e0}body.dark-mode .game-wrapper{background:linear-gradient(135deg,#0a0a0a 0,#1a1a1a 100%)}body.dark-mode .game-wrapper::before{background:radial-gradient(circle,rgba(255,94,0,.15) 0,transparent 70%)}body.dark-mode .game-header h1{color:#e0e0e0}body.dark-mode .game-header p{color:#a0a0a0}body.dark-mode .stat-box{background:#151515;border-color:rgba(255,255,255,.05)}body.dark-mode .stat-label{color:#a0a0a0}body.dark-mode .grid-container{background:rgba(21,21,21,.95);border-color:rgba(255,255,255,.05)}body.dark-mode .tile{background:linear-gradient(135deg,#1a1a1a,#252525);box-shadow:0 4px 12px rgba(0,0,0,.4)}body.dark-mode .message{color:#e0e0e0;background:rgba(255,94,0,.15)}body.dark-mode .message.success{background:rgba(16,185,129,.2);color:var(--success)}body.dark-mode .message.error{background:rgba(239,68,68,.2);color:var(--error)}body.dark-mode .game-over{background:rgba(0,0,0,.9)}body.dark-mode .game-over-content{background:#151515}body.dark-mode .game-over-content p{color:#a0a0a0}body.dark-mode .instructions{background:#151515;border-color:rgba(255,255,255,.05)}body.dark-mode .instructions h3{color:var(--accent)}body.dark-mode .instructions ol{color:#a0a0a0}body.dark-mode .btn-secondary{background:#1a1a1a;border-color:var(--primary)}body.dark-mode .btn-secondary:hover{background:var(--primary);color:#fff}.settings-panel{background:#fff;padding:32px;border-radius:16px;box-shadow:0 4px 20px rgba(0,0,0,.06);margin-bottom:40px;width:100%;margin-left:auto;margin-right:auto;border:1px solid rgba(0,0,0,.05);box-sizing:border-box}body.dark-mode .settings-panel{background:#151515;border-color:rgba(255,255,255,.05)}.settings-panel h3{font-family:Orbitron,sans-serif;font-size:24px;margin-bottom:24px;color:var(--primary);display:flex;align-items:center;gap:10px}.settings-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:24px}.setting-item{display:flex;flex-direction:column;gap:12px}.setting-item label{font-size:14px;font-weight:600;color:var(--medium-gray);text-transform:uppercase;letter-spacing:.5px;display:flex;align-items:center;gap:8px}body.dark-mode .setting-item label{color:#a0a0a0}.setting-item input[type=number],.setting-item input[type=range]{width:100%;padding:12px;border:2px solid rgba(0,0,0,.1);border-radius:10px;font-size:16px;font-family:Inter,sans-serif;transition:border-color .3s}.setting-item input[type=number]{background:#f8f9fa}body.dark-mode .setting-item input[type=number]{background:#0a0a0a;border-color:rgba(255,255,255,.1);color:#e0e0e0}.setting-item input[type=number]:focus{outline:0;border-color:var(--primary)}.setting-item input[type=range]{padding:0;height:8px;-webkit-appearance:none;appearance:none;background:#e0e0e0;border:none}body.dark-mode .setting-item input[type=range]{background:#2a2a2a}.setting-item input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:20px;height:20px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));cursor:pointer;box-shadow:0 2px 8px rgba(255,94,0,.4)}.setting-item input[type=range]::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));cursor:pointer;border:none;box-shadow:0 2px 8px rgba(255,94,0,.4)}.setting-value{display:inline-block;min-width:60px;text-align:right;font-weight:700;color:var(--primary);font-family:Orbitron,sans-serif}.setting-description{font-size:13px;color:var(--medium-gray);font-style:italic}body.dark-mode .setting-description{color:grey}.toggle-settings{background:0 0;border:2px solid var(--primary);color:var(--primary);padding:10px 20px;border-radius:8px;cursor:pointer;font-weight:600;font-size:14px;transition:all .3s;display:flex;align-items:center;gap:8px;margin:0 auto 20px}.toggle-settings:hover{background:var(--primary);color:#fff}body.dark-mode .toggle-settings{border-color:var(--accent);color:var(--accent)}body.dark-mode .toggle-settings:hover{background:var(--accent);color:#fff}.settings-panel.collapsed{display:none}.announcement-bar{background:linear-gradient(90deg,var(--primary),var(--accent));color:#fff;text-align:center;padding:12px 20px;font-size:14px;font-weight:600;position:relative;overflow:hidden}.announcement-bar::before{content:'';position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);animation:shimmer 3s infinite}@keyframes shimmer{to{left:100%}}header{background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-bottom:1px solid rgba(0,0,0,.05);padding:15px 0;position:sticky;top:0;z-index:1000;box-shadow:0 2px 20px rgba(0,0,0,.03);width:100%}.header-container{max-width:1400px;margin:0 auto;padding:0 20px;display:flex;justify-content:space-between;align-items:center}.logo{display:flex;align-items:center;gap:12px;text-decoration:none;transition:transform .3s}.logo:hover{transform:translateY(-2px)}.logo-icon{width:42px;height:42px;background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:12px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:20px;box-shadow:0 4px 12px rgba(255,94,0,.3)}.logo-text{font-family:Orbitron,sans-serif;font-size:24px;font-weight:700;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}nav ul{display:flex;list-style:none;gap:40px;align-items:center}nav a{text-decoration:none;color:#1a1a1a;font-weight:500;font-size:15px;transition:color .3s;position:relative;white-space:nowrap}nav a::after{content:'';position:absolute;bottom:-5px;left:0;width:0;height:2px;background:var(--primary);transition:width .3s}nav a:hover::after{width:100%}nav a:hover{color:var(--primary)}.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;z-index:1001}.hamburger span{width:25px;height:3px;background:var(--primary);border-radius:3px;transition:all .3s}.hamburger.active span:first-child{transform:rotate(45deg) translate(8px,8px)}.hamburger.active span:nth-child(2){opacity:0}.hamburger.active span:nth-child(3){transform:rotate(-45deg) translate(7px,-7px)}body.dark-mode .hamburger span{background:var(--accent)}@media (max-width:768px){.hamburger{display:flex}nav ul{position:fixed;top:0;right:-100%;height:100vh;width:280px;background:#fff;flex-direction:column;padding:80px 30px 30px;box-shadow:-5px 0 20px rgba(0,0,0,.1);transition:right .3s ease;gap:20px;z-index:1000;overflow-y:auto}body.dark-mode nav ul{background:#151515}nav ul.active{right:0}nav a::after{display:none}}.nav-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.5);z-index:999;display:none;opacity:0;transition:opacity .3s}.nav-overlay.active{display:block;opacity:1}.dark-mode-toggle{background:0 0;border:2px solid var(--primary);color:var(--primary);width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .3s;font-size:18px}body.dark-mode .dark-mode-toggle{border-color:var(--accent);color:var(--accent)}body.dark-mode .dark-mode-toggle:hover{background:var(--accent);color:#fff}.game-wrapper{background:linear-gradient(135deg,#fff 0,#fff5eb 100%);min-height:calc(100vh - 180px);padding:60px 20px;position:relative;overflow:hidden}.game-wrapper::before{content:'';position:absolute;top:0;right:0;width:600px;height:600px;background:radial-gradient(circle,rgba(255,94,0,.08) 0,transparent 70%);border-radius:50%}.game-container{max-width:1200px;margin:0 auto;position:relative;z-index:1}.game-header{text-align:center;margin-bottom:40px}.game-header h1{font-family:Orbitron,sans-serif;font-size:48px;font-weight:800;color:var(--dark);margin-bottom:16px}.game-header h1 .highlight{background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.game-header p{font-size:18px;color:var(--medium-gray);max-width:700px;margin:0 auto 24px;line-height:1.7}.stats-container{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-bottom:40px;max-width:800px;margin-left:auto;margin-right:auto}.stat-box{background:#fff;padding:24px;border-radius:16px;text-align:center;box-shadow:0 4px 20px rgba(0,0,0,.06);border:1px solid rgba(0,0,0,.05);transition:transform .3s,box-shadow .3s}.stat-box:hover{transform:translateY(-5px);box-shadow:0 8px 30px rgba(255,94,0,.15)}.stat-label{font-size:14px;color:var(--medium-gray);font-weight:600;text-transform:uppercase;letter-spacing:1px;margin-bottom:8px}.stat-value{font-family:Orbitron,sans-serif;font-size:36px;font-weight:700;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.grid-container{background:#fff;padding:40px;border-radius:24px;box-shadow:0 20px 60px rgba(0,0,0,.1);border:1px solid rgba(0,0,0,.05);margin-bottom:40px;width:100%;margin-left:auto;margin-right:auto;box-sizing:border-box}body.dark-mode .grid-container{background:#151515;border-color:rgba(255,255,255,.05)}.tile-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;max-width:600px;margin:0 auto}.tile{aspect-ratio:1;background:linear-gradient(135deg,#fff,#f5f5f5);border-radius:16px;cursor:pointer;transition:all .3s cubic-bezier(.4, 0, .2, 1);position:relative;overflow:hidden;box-shadow:0 4px 12px rgba(0,0,0,.08);border:2px solid #e0e0e0}.tile::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(255,255,255,.6),transparent);opacity:0;transition:opacity .3s}.tile:hover::before{opacity:1}.tile:hover{transform:translateY(-4px);box-shadow:0 8px 20px rgba(0,0,0,.12);border-color:#d0d0d0}.tile.active{background:linear-gradient(135deg,#ff2a00,#ff5e00)!important;box-shadow:none!important;color:#fff!important;transform:scale(1.05)!important;border:none!important}.tile.success{background:#4caf50!important;box-shadow:none!important;color:#fff!important;border:none!important;animation:successPulse .4s ease-out}.tile.error{background:#f44336!important;box-shadow:none!important;color:#fff!important;border:none!important;animation:errorShake .5s ease-out}body.dark-mode .tile.active{background:linear-gradient(135deg,#ff2a00,#ff5e00)!important;box-shadow:none!important}body.dark-mode .tile.success{background:#4caf50!important;box-shadow:none!important}body.dark-mode .tile.error{background:#f44336!important;box-shadow:none!important}.tile.disabled{cursor:not-allowed;opacity:.7}@keyframes tileGlow{0%,100%{box-shadow:0 0 40px rgba(255,94,0,.6),0 0 80px rgba(255,94,0,.3)}50%{box-shadow:0 0 60px rgba(255,94,0,.8),0 0 120px rgba(255,94,0,.5)}}@keyframes successPulse{0%{transform:scale(1)}50%{transform:scale(1.1)}100%{transform:scale(1)}}@keyframes errorShake{0%,100%{transform:translateX(0)}25%{transform:translateX(-10px)}75%{transform:translateX(10px)}}.controls{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-top:32px}.btn{padding:16px 36px;border-radius:50px;font-weight:600;font-size:16px;text-decoration:none;display:inline-flex;align-items:center;gap:10px;transition:all .3s;cursor:pointer;border:none;font-family:Inter,sans-serif}.btn-primary{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;box-shadow:0 4px 20px rgba(255,94,0,.3)}.btn-primary:hover:not(:disabled){transform:translateY(-3px);box-shadow:0 6px 30px rgba(255,94,0,.4)}.btn-primary:active:not(:disabled){transform:translateY(-1px)}.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-secondary{background:#fff;color:var(--primary);border:2px solid var(--primary)}.btn-secondary:hover{background:var(--primary);color:#fff}.message-display{text-align:center;min-height:60px;display:flex;align-items:center;justify-content:center;margin-top:24px}.message{font-size:20px;font-weight:600;color:var(--dark);padding:12px 24px;border-radius:12px;background:rgba(255,94,0,.08);display:inline-block}.message.success{background:rgba(16,185,129,.1);color:var(--success)}.message.error{background:rgba(239,68,68,.1);color:var(--error)}.game-over{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.8);z-index:2000;align-items:center;justify-content:center;backdrop-filter:blur(10px);animation:fadeIn .3s ease-out}.game-over.active{display:flex}@keyframes fadeIn{from{opacity:0}to{opacity:1}}.game-over-content{background:#fff;padding:48px;border-radius:24px;text-align:center;max-width:500px;width:90%;box-shadow:0 30px 80px rgba(0,0,0,.3);animation:slideUp .4s ease-out}@keyframes slideUp{from{transform:translateY(50px);opacity:0}to{transform:translateY(0);opacity:1}}.game-over-content h2{font-family:Orbitron,sans-serif;font-size:36px;margin-bottom:16px;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.game-over-content .final-score{font-size:64px;font-weight:800;font-family:Orbitron,sans-serif;color:var(--primary);margin:24px 0}.game-over-content p{font-size:18px;color:var(--medium-gray);margin-bottom:32px}.instructions{background:#fff;padding:32px;border-radius:16px;box-shadow:0 4px 20px rgba(0,0,0,.06);margin-top:40px;width:100%;max-width:1000px;margin-left:auto;margin-right:auto;box-sizing:border-box}body.dark-mode .instructions{background:#151515;border-color:rgba(255,255,255,.05)}.instructions h3{font-family:Orbitron,sans-serif;font-size:24px;margin-bottom:20px;color:var(--primary)}.instructions ol{list-style-position:inside;color:var(--medium-gray);line-height:2}body.dark-mode .instructions ol{color:#a0a0a0}.instructions li{margin-bottom:8px}@media (max-width:768px){.game-header h1{font-size:32px}.game-header p{font-size:16px}.grid-container{padding:24px}.settings-panel{padding:24px}.instructions{padding:24px}.tile-grid{gap:12px}.stat-value{font-size:28px}.game-over-content{padding:32px 24px}.game-over-content h2{font-size:28px}.game-over-content .final-score{font-size:48px}nav ul{gap:20px}nav a{font-size:14px}.dark-mode-toggle{width:36px;height:36px;font-size:16px}}@media (max-width:480px){.logo-text{font-size:20px}.logo-icon{width:36px;height:36px;font-size:18px}.game-header h1{font-size:24px}.tile-grid{gap:10px}.stats-container{grid-template-columns:1fr}.btn{padding:14px 28px;font-size:15px}.grid-container{padding:20px}.settings-panel{padding:20px}.instructions{padding:20px}.settings-grid{grid-template-columns:1fr}}footer{background:linear-gradient(135deg,var(--dark) 0,var(--dark-card) 100%);color:#fff;text-align:center;border-top:2px solid transparent;border-image:linear-gradient(90deg,var(--primary),var(--accent)) 1;position:relative;overflow:hidden}footer::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--primary),var(--accent))}footer p{margin:10px 0;line-height:1.6;font-size:14px}footer strong{font-family:Orbitron,sans-serif;font-size:20px;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;display:inline-block;margin-bottom:5px}.social{display:flex;justify-content:center;align-items:center;gap:15px}.social a{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;background:rgba(255,94,0,.1);border-radius:50%;border:2px solid rgba(255,94,0,.3);transition:all .3s}.social a:hover{transform:translateY(-3px) scale(1.1);background:linear-gradient(135deg,var(--primary),var(--accent));border-color:var(--accent);box-shadow:0 5px 20px rgba(255,94,0,.4)}.social img{width:24px;height:24px}footer a{color:var(--accent);text-decoration:none;font-weight:500;transition:all .3s;position:relative}footer a:hover{color:#fff}footer a::after{content:'';position:absolute;bottom:-2px;left:0;width:0;height:2px;background:linear-gradient(90deg,var(--primary),var(--accent));transition:width .3s}footer a:hover::after{width:100%}footer p:last-of-type{font-size:11px;color:rgba(255,255,255,.5);margin-top:15px;font-style:italic}body.dark-mode footer{background:linear-gradient(135deg,#000 0,#0a0a0a 100%)}body.dark-mode .social a{background:rgba(255,150,0,.15);border-color:rgba(255,150,0,.4)}@media (max-width:768px){footer{padding:25px 15px}footer strong{font-size:18px}footer p{font-size:13px}.social a{width:40px;height:40px}}.social a::after{display:none!important}.content-wrapper{max-width:1200px;margin:0 auto;padding:2rem;background:#fff;border-radius:16px;box-shadow:0 4px 24px rgba(0,0,0,.08);margin-top:2rem;margin-bottom:3rem}.content-wrapper .main-title{font-size:2.5rem;font-weight:700;text-align:center;color:var(--primary);margin-bottom:2rem;line-height:1.3}.content-wrapper .section-title{font-size:2rem;color:var(--accent);margin:3rem 0 1.5rem;position:relative;text-align:center;padding-bottom:.75rem}.subsection-title{font-size:2rem;color:var(--accent);margin:3rem 0 1.5rem;position:relative;text-align:center;padding-bottom:.75rem}.content-wrapper .section-title::after{content:"";position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:100px;height:4px;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:2px}.subsection-title::after{content:"";position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:100px;height:4px;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:2px}.content-wrapper .intro-text{font-size:1.1rem;line-height:1.8;color:#333;margin-bottom:1.5rem}.content-wrapper .info-card{background:#f9f9f9;border-radius:12px;padding:1.5rem;box-shadow:0 4px 12px rgba(0,0,0,.05);margin-bottom:1.5rem;border:1px solid #eee;transition:transform .3s ease,box-shadow .3s ease}.content-wrapper .info-card:hover{transform:translateY(-4px);box-shadow:0 8px 20px rgba(0,0,0,.1)}.content-wrapper .card-header{font-size:1.3rem;color:var(--primary);margin-bottom:1rem;display:flex;align-items:center;gap:.5rem}.content-wrapper .feature-list{list-style:none;padding:0;margin:1.5rem 0}.content-wrapper .feature-list li{padding:.5rem 0;color:#444;display:flex;align-items:flex-start;gap:.75rem;margin-bottom:.5rem}.content-wrapper .feature-list li::before{content:"•";color:var(--accent);font-size:1.5rem;line-height:1}.content-wrapper .steps-list{counter-reset:step-counter;list-style:none;padding:0;margin:1.5rem 0}.content-wrapper .steps-list li{counter-increment:step-counter;padding:1rem 1rem 1rem 3rem;margin-bottom:1rem;background:#f9f9f9;border-radius:8px;position:relative;border-left:4px solid var(--accent)}.content-wrapper .steps-list li::before{content:counter(step-counter);position:absolute;left:1rem;top:50%;transform:translateY(-50%);background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:.9rem}.content-wrapper .content-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem;margin:2rem 0}.content-wrapper .important-note{background:rgba(255,152,0,.1);border-left:4px solid var(--accent);padding:1.25rem;border-radius:8px;margin:2rem 0;font-size:.95rem}.content-wrapper .cta-section{text-align:center;padding:2.5rem;background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:12px;margin:3rem 0;color:#fff}.content-wrapper .cta-title{font-size:1.8rem;margin-bottom:.75rem}.content-wrapper .cta-text{font-size:1.1rem;margin-bottom:1.5rem;opacity:.9}.content-wrapper .cta-button{display:inline-block;background:#fff;color:var(--primary);padding:.75rem 2rem;border-radius:50px;text-decoration:none;font-weight:600;transition:all .3s ease}.content-wrapper .cta-button:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,.15)}body.dark-mode .content-wrapper{background:#1a1a1a;border:1px solid rgba(255,255,255,.1)}body.dark-mode .content-wrapper .feature-list li,body.dark-mode .content-wrapper .intro-text{color:#e0e0e0}body.dark-mode .content-wrapper .info-card{background:#252525;border-color:#333}body.dark-mode .content-wrapper .steps-list li{background:#252525}@media (max-width:768px){.content-wrapper{padding:1.5rem;margin:1rem}.content-wrapper .main-title{font-size:2rem}.content-wrapper .section-title{font-size:1.6rem}.content-wrapper .content-grid{grid-template-columns:1fr}}.intro-text{margin:2rem auto 2.5rem;padding:1.2rem 1.5rem;font-size:1.05rem;line-height:1.8;color:#444;text-align:center;background:#f9f9f9;border-radius:12px;border-left:4px solid var(--accent);box-shadow:0 6px 18px rgba(0,0,0,.04);transition:all .3s ease}body.dark-mode .intro-text{background:#2a2a2a;color:#e0e0e0;border-left:4px solid var(--accent);box-shadow:0 6px 18px rgba(0,0,0,.2)}.intro-text:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.1)}body.dark-mode .intro-text:hover{box-shadow:0 8px 24px rgba(0,0,0,.3)}