*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-primary: #0a0f1a;--bg-secondary: #111827;--bg-card: #1a2332;--bg-card-hover: #1f2b3d;--green: #00d4aa;--green-dim: #10b981;--blue: #3b82f6;--blue-dim: #2563eb;--gold: #f59e0b;--red: #ef4444;--purple: #8b5cf6;--text: #e5e7eb;--text-dim: #9ca3af;--text-bright: #f9fafb;--border: #374151;--radius: 12px;--radius-sm: 8px;--font: "Inter", system-ui, sans-serif;--mono: "JetBrains Mono", monospace}html,body{font-family:var(--font);background:var(--bg-primary);color:var(--text);min-height:100vh;overflow-x:hidden;-webkit-font-smoothing:antialiased}body{position:relative}#app{min-height:100vh;display:flex;flex-direction:column}.hidden{display:none!important}.btn-primary{background:linear-gradient(135deg,var(--green),var(--green-dim));color:#000;border:none;padding:14px 32px;border-radius:var(--radius);font-size:16px;font-weight:700;cursor:pointer;transition:transform .15s,box-shadow 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.2s}.btn-back:hover{color:var(--green)}.title-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}#chart-bg{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;opacity:.15}.title-content{text-align:center;z-index:1;padding:20px}.title-logo{font-size:72px;margin-bottom:16px;animation:float 3s ease-in-out infinite}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-12px)}}.title-heading{font-size:clamp(36px,8vw,64px);font-weight:900;background:linear-gradient(135deg,var(--green),var(--blue));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:8px}.title-sub{font-size:18px;color:var(--text-dim);margin-bottom:8px}.title-desc{font-size:14px;color:var(--text-dim);margin-bottom:32px}.btn-start{display:block;margin:0 auto 16px;min-width:220px}.btn-reset{display:block;margin:0 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#00d4aa26}.level-card.locked{opacity:.4;cursor:not-allowed}.level-card.completed{border-color:var(--green-dim)}.level-card.completed:after{content:"✓";position:absolute;top:8px;right:8px;color:var(--green);font-weight:700;font-size:14px}.level-card .level-num{font-family:var(--mono);font-size:12px;color:var(--text-dim);margin-bottom:6px}.level-card .level-emoji{font-size:28px;margin-bottom:8px}.level-card .level-name{font-size:13px;font-weight:600;color:var(--text);line-height:1.3}.level-card.locked .level-emoji:after{content:"🔒";font-size:16px;position:absolute;bottom:4px;right:4px}.game-view{display:flex;flex-direction:column;min-height:100vh}.header-bar{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;background:var(--bg-secondary);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50}.header-title{font-size:16px;font-weight:700;color:var(--text-bright)}.game-container{flex:1;padding:20px;max-width:900px;width:100%;margin:0 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var(--border);border-radius:var(--radius);padding:14px 20px;margin:8px 0;cursor:pointer;transition:border-color .2s,background .2s,transform .15s;font-size:15px;text-align:left;width:100%;color:var(--text);font-family:var(--font)}.quiz-option:hover:not(.selected):not(.disabled){border-color:var(--blue);background:var(--bg-card-hover);transform:translate(4px)}.quiz-option.correct{border-color:var(--green);background:#00d4aa1a}.quiz-option.wrong{border-color:var(--red);background:#ef44441a}.quiz-option.selected{border-color:var(--blue);background:#3b82f61a}.quiz-option.disabled{pointer-events:none;opacity:.7}.card-flip{perspective:800px;cursor:pointer}.card-flip-inner{transition:transform .5s;transform-style:preserve-3d;position:relative}.card-flip.flipped .card-flip-inner{transform:rotateY(180deg)}.card-front,.card-back{backface-visibility:hidden;position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;padding:12px;border-radius:var(--radius);text-align:center}.card-front{background:var(--bg-card);border:1px solid var(--border)}.card-back{background:var(--bg-card-hover);border:1px solid var(--green);transform:rotateY(180deg)}.sort-item{background:var(--bg-card);border:2px solid var(--border);border-radius:var(--radius-sm);padding:12px 16px;cursor:pointer;transition:border-color .2s,transform .15s,background 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.2s}.sort-zone.active{border-color:var(--green)}.sort-zone-title{font-size:14px;font-weight:700;color:var(--text-dim);margin-bottom:8px;text-transform:uppercase;letter-spacing:.5px}.slider-control{width:100%;-webkit-appearance:none;-moz-appearance:none;appearance:none;height:6px;border-radius:3px;background:var(--border);outline:none}.slider-control::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;border-radius:50%;background:var(--green);cursor:pointer}.score-display{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:18px;font-weight:700;padding:8px 16px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm)}.timer-bar{height:4px;background:var(--border);border-radius:2px;overflow:hidden;margin-bottom:16px}.timer-bar-fill{height:100%;background:var(--green);transition:width .1s linear}.screen-title{font-size:20px;font-weight:700;color:var(--text-bright);margin-bottom:8px}.screen-instructions{font-size:14px;color:var(--text-dim);margin-bottom:20px;line-height:1.5}.screen-score{text-align:center;margin-bottom:16px}.items-grid{display:grid;gap:10px}.items-grid.cols-2{grid-template-columns:repeat(2,1fr)}.items-grid.cols-3{grid-template-columns:repeat(3,1fr)}.items-grid.cols-4{grid-template-columns:repeat(4,1fr)}.items-grid.cols-5{grid-template-columns:repeat(5,1fr)}.buckets-row{display:grid;gap:16px;margin-top:20px}.buckets-row.cols-2{grid-template-columns:repeat(2,1fr)}.buckets-row.cols-3{grid-template-columns:repeat(3,1fr)}.result-box{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;text-align:center;margin:20px 0}.result-box.success{border-color:var(--green)}.result-box.failure{border-color:var(--red)}.result-title{font-size:20px;font-weight:700;margin-bottom:8px}.result-text{font-size:15px;color:var(--text-dim);margin-bottom:16px}.input-field{background:var(--bg-card);border:2px solid var(--border);border-radius:var(--radius-sm);padding:12px 16px;color:var(--text);font-size:16px;font-family:var(--mono);outline:none;transition:border-color .2s;width:100%}.input-field:focus{border-color:var(--blue)}.bar-chart-container{display:flex;align-items:flex-end;gap:4px;height:200px;padding:0 8px;border-bottom:2px solid var(--border)}.bar-chart-bar{flex:1;min-width:20px;border-radius:4px 4px 0 0;transition:height .6s ease}.scenario-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin:12px 0}.tag{display:inline-block;padding:4px 10px;border-radius:20px;font-size:12px;font-weight:600;margin:4px}.tag-green{background:#00d4aa26;color:var(--green)}.tag-red{background:#ef444426;color:var(--red)}.tag-blue{background:#3b82f626;color:var(--blue)}.tag-gold{background:#f59e0b26;color:var(--gold)}.connection-canvas{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:5}@media(max-width:640px){.level-grid{grid-template-columns:repeat(3,1fr);gap:8px}.level-card{padding:12px 8px}.level-card .level-emoji{font-size:22px}.level-card .level-name{font-size:11px}.game-container{padding:16px 12px}.intro-card,.outro-card{padding:28px 20px}.items-grid.cols-4{grid-template-columns:repeat(2,1fr)}.items-grid.cols-5{grid-template-columns:repeat(3,1fr)}.buckets-row.cols-3{grid-template-columns:1fr}.cert-border{padding:24px 16px;margin:8px}}@media(max-width:420px){.items-grid.cols-3{grid-template-columns:repeat(2,1fr)}.header-title{font-size:13px}}@media print{body{background:#fff;color:#000}.header-bar,.progress-dots,.btn-primary,.btn-secondary,.btn-back,.sound-toggle,.confetti-container{display:none!important}.certificate-overlay,.certificate{background:#fff}.cert-border{border-color:#b8860b}.cert-title{color:#b8860b;-webkit-text-fill-color:#b8860b}.cert-text,.cert-subtitle{color:#333}.cert-name-input{color:#000;border-color:#b8860b}}