.utility-container{width:100%;max-width:1000px;margin:0 auto;padding:40px 24px;display:flex;flex-direction:column;align-items:center;gap:32px}.utility-card{width:100%;background:var(--surface);border-radius:20px;box-shadow:0 8px 32px var(--shadow-light);padding:40px 32px;display:flex;flex-direction:column;align-items:center;gap:24px;border:1px solid var(--border-light)}.premium-card{background:linear-gradient(135deg,var(--surface) 0%,var(--surface-elevated) 100%);border:1px solid var(--border-light);box-shadow:0 12px 40px var(--shadow-medium)}.utility-input-group{width:100%;max-width:600px;display:flex;flex-direction:column;gap:20px}.form-row{display:flex;align-items:center;gap:16px;width:100%;margin-bottom:16px}.form-row label{min-width:140px;text-align:right;font-weight:600;color:var(--text-secondary);font-size:.95rem}.form-row .utility-input{flex:1}.utility-input,.premium-input{width:100%;padding:16px 20px;border:2px solid var(--border-light);border-radius:12px;font-size:1rem;font-family:inherit;background:var(--surface);color:var(--text-primary);transition:all .3s ease;box-shadow:0 2px 8px #0000000a}.utility-input:focus,.premium-input:focus{border-color:var(--accent-primary);box-shadow:0 0 0 4px var(--accent-glow);outline:none;transform:translateY(-1px)}.utility-input:hover,.premium-input:hover{border-color:var(--accent-secondary);box-shadow:0 4px 12px #00000014}.utility-textarea{width:100%;min-height:200px;padding:20px;border:2px solid var(--border-light);border-radius:16px;font-size:1rem;font-family:SF Mono,Monaco,Inconsolata,Roboto Mono,monospace;background:var(--surface);color:var(--text-primary);resize:vertical;transition:all .3s ease;line-height:1.5}.utility-textarea:focus{border-color:var(--accent-primary);box-shadow:0 0 0 4px var(--accent-glow);outline:none}.utility-textarea::placeholder{color:var(--text-secondary);opacity:.7}.utility-button,.premium-button{padding:16px 32px;background:var(--gradient-primary);color:#fff;border:none;border-radius:12px;font-weight:600;font-size:1rem;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 16px var(--accent-glow);min-width:140px}.utility-button:hover,.premium-button:hover{transform:translateY(-2px);box-shadow:0 8px 24px var(--accent-glow)}.utility-button:active,.premium-button:active{transform:translateY(0);box-shadow:0 4px 16px var(--accent-glow)}.utility-button.secondary{background:var(--surface-elevated);color:var(--text-primary);border:2px solid var(--border-medium);box-shadow:0 2px 8px var(--shadow-light)}.utility-button.secondary:hover{background:var(--surface);border-color:var(--accent-primary);color:var(--accent-primary)}.utility-result{width:100%;text-align:center;padding:24px;background:linear-gradient(135deg,var(--surface-elevated) 0%,var(--surface) 100%);border-radius:16px;border:1px solid var(--border-light);margin-top:16px;min-height:60px;display:flex;align-items:center;justify-content:center}.result-success{background:linear-gradient(135deg,#00d64f1a,#00d64f0d);border-color:var(--accent-primary);color:var(--text-primary)}.result-error{background:linear-gradient(135deg,#dc35451a,#dc35450d);border-color:#dc3545;color:#dc3545}.utility-label{display:block;margin-bottom:8px;font-weight:600;color:var(--text-primary);font-size:1rem}.utility-label.required:after{content:" *";color:#dc3545}.radio-group,.checkbox-group{display:flex;gap:20px;flex-wrap:wrap;justify-content:center;margin:16px 0}.radio-item,.checkbox-item{display:flex;align-items:center;gap:8px;cursor:pointer;padding:8px 16px;border-radius:8px;transition:all .2s ease}.radio-item:hover,.checkbox-item:hover{background:var(--surface-elevated)}.radio-item input[type=radio],.checkbox-item input[type=checkbox]{width:18px;height:18px;accent-color:var(--accent-primary)}.utility-file-input{width:100%;padding:20px;font-size:1rem;border:2px dashed var(--border-medium);border-radius:16px;background:var(--surface-elevated);cursor:pointer;transition:all .3s ease;text-align:center;color:var(--text-secondary)}.utility-file-input:hover{border-color:var(--accent-primary);background:var(--surface);color:var(--text-primary)}.utility-file-input:focus{border-color:var(--accent-primary);box-shadow:0 0 0 4px var(--accent-glow);outline:none}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:16px;width:100%;margin:16px 0}.stat-card{background:var(--surface);padding:16px;border-radius:12px;text-align:center;border:1px solid var(--border-light);box-shadow:0 2px 8px var(--shadow-light)}.stat-label{font-size:.85rem;color:var(--text-secondary);margin-bottom:4px;font-weight:500}.stat-value{font-size:1.4rem;font-weight:700;color:var(--accent-primary)}.button-group{display:flex;gap:16px;flex-wrap:wrap;justify-content:center;margin:20px 0}.button-group .utility-button{min-width:120px;flex:1;max-width:200px}.form-actions{display:flex;gap:16px;flex-wrap:wrap;justify-content:center;margin:24px 0 16px;width:100%}.form-actions .utility-button,.form-actions .premium-button{min-width:140px;flex:0 1 auto}.utility-section{width:100%;padding:20px 0;text-align:center}.utility-subtitle{font-size:1.1rem;font-weight:600;color:var(--text-primary);margin-bottom:16px}.utility-divider{border:none;height:1px;background:var(--border-light);margin:32px 0}.calc-input-row{display:flex;gap:16px;justify-content:center;align-items:center;flex-wrap:wrap;width:100%;margin-bottom:16px}.calc-input-group{display:flex;flex-direction:column;align-items:center;gap:8px;min-width:120px;flex:1;max-width:200px}.calc-input-narrow{width:120px;flex:0 0 120px}.calc-result-row{display:flex;gap:32px;justify-content:center;flex-wrap:wrap;margin-top:16px}.calc-result-item{text-align:center;min-width:120px}.calc-operator{color:var(--text-secondary);font-weight:500;font-size:.9rem;white-space:nowrap;align-self:center;margin-top:20px}.calc-method-section{width:100%;text-align:center;margin-bottom:32px}.calc-inputs-section{width:100%;margin-bottom:24px}.calc-single-input{width:100%;max-width:400px;margin:0 auto;display:flex;flex-direction:column;align-items:center;gap:12px}.calc-dual-inputs{display:flex;gap:24px;justify-content:center;align-items:flex-start;width:100%;max-width:600px;margin:0 auto}.calc-dual-inputs .calc-input-group{flex:1;min-width:200px}.age-result{text-align:center;padding:24px;background:linear-gradient(135deg,var(--accent-primary-light) 0%,var(--accent-primary-ultra-light) 100%);border-radius:16px;border:2px solid var(--accent-primary)}.age-result .stat-label{font-size:1rem;color:var(--accent-primary);margin-bottom:8px;font-weight:500}.age-result .stat-value{font-size:2rem;font-weight:700;color:var(--accent-primary);text-shadow:0 1px 2px rgba(0,0,0,.1)}.loading{opacity:.7;pointer-events:none;position:relative}.loading:after{content:"";position:absolute;top:50%;left:50%;width:20px;height:20px;margin:-10px 0 0 -10px;border:2px solid var(--accent-primary);border-radius:50%;border-top-color:transparent;animation:spin 1s linear infinite}.error-message{color:#dc3545;font-weight:500;margin-top:8px;text-align:center;font-size:.9rem}.success-message{color:var(--accent-primary);font-weight:500;margin-top:8px;text-align:center;font-size:.9rem}@media (max-width: 768px){.utility-container{padding:24px 16px}.utility-card{padding:24px 20px}.form-row{flex-direction:column;align-items:stretch;gap:8px}.form-row label{text-align:left;min-width:auto}.radio-group,.checkbox-group{flex-direction:column;align-items:center;gap:12px}.radio-item,.checkbox-item{width:100%;max-width:280px;justify-content:center}.button-group{flex-direction:column}.button-group .utility-button{max-width:none}.stats-grid{grid-template-columns:repeat(2,1fr);gap:12px}.calc-input-row{flex-direction:column;gap:20px}.calc-input-group{max-width:none}.calc-input-narrow{width:100%;flex:1 1 auto}.calc-operator{margin:8px 0;text-align:center}.calc-result-row{flex-direction:column;gap:16px}.calc-result-item{min-width:auto}.calc-dual-inputs{flex-direction:column;gap:20px;max-width:none}.calc-dual-inputs .calc-input-group{min-width:auto}.calc-single-input{max-width:none}.age-result .stat-value{font-size:1.6rem}}@media (max-width: 480px){.utility-container{padding:16px 12px}.utility-card{padding:20px 16px}.stats-grid{grid-template-columns:1fr}.stat-card{padding:12px}}.qr-container{display:flex;flex-direction:column;align-items:center;gap:24px;width:100%}.qr-canvas{border:2px solid var(--border-light);border-radius:12px;background:#fff;padding:16px;box-shadow:0 4px 16px var(--shadow-light)}.qr-input-group{width:100%;max-width:500px}.color-info-group{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:16px;width:100%;margin:20px 0}.color-info-card{background:var(--surface);padding:16px;text-align:center;border-radius:12px;border:1px solid var(--border-light);box-shadow:0 2px 8px var(--shadow-light)}.color-preview{height:60px;border-radius:12px;border:2px solid var(--border-light);width:100%;max-width:300px;margin:20px auto;box-shadow:0 4px 12px var(--shadow-light)}.color-input-group{display:flex;gap:12px;align-items:center;justify-content:center;margin:16px 0}.emoji-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(60px,1fr));gap:8px;width:100%;max-width:500px;margin:20px 0;max-height:300px;overflow-y:auto;padding:16px;border:1px solid var(--border-light);border-radius:12px;background:var(--surface-elevated)}.emoji-button{font-size:1.8rem;padding:12px;border-radius:8px;border:none;background:var(--surface);cursor:pointer;transition:all .2s ease;aspect-ratio:1;display:flex;align-items:center;justify-content:center}.emoji-button:hover{transform:scale(1.1);background:var(--accent-glow);box-shadow:0 4px 12px var(--shadow-medium)}.emoji-button-active{background:var(--accent-primary);color:#fff;transform:scale(1.05)}.json-container{width:100%;max-width:800px}.json-input-output{display:grid;grid-template-columns:1fr;gap:24px;width:100%}.json-section{display:flex;flex-direction:column;gap:12px}.json-section h3{font-size:1.1rem;color:var(--text-primary);margin:0;font-weight:600}.json-output{background:var(--surface-elevated);border:1px solid var(--border-light);border-radius:12px;padding:20px;font-family:SF Mono,Monaco,Inconsolata,Roboto Mono,monospace;font-size:.9rem;line-height:1.4;white-space:pre-wrap;overflow-x:auto;min-height:200px;max-height:400px;overflow-y:auto}.pdf-form{display:flex;flex-direction:column;gap:32px;width:100%;max-width:700px}.pdf-merge-container{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px}.pdf-section{display:flex;flex-direction:column;gap:16px}.currency-row{display:flex;align-items:center;gap:16px;width:100%}.currency-select{min-width:120px;padding:16px;border:2px solid var(--border-light);border-radius:12px;background:var(--surface);color:var(--text-primary);font-size:1rem;cursor:pointer;transition:all .3s ease}.currency-select:focus{border-color:var(--accent-primary);box-shadow:0 0 0 4px var(--accent-glow);outline:none}.conversion-arrow{font-size:1.5rem;color:var(--accent-primary);margin:0 8px}.password-options{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin:20px 0}.password-option{display:flex;align-items:center;gap:12px;padding:12px 16px;background:var(--surface-elevated);border-radius:8px;border:1px solid var(--border-light)}.password-length{display:flex;align-items:center;gap:16px;margin:16px 0}.password-length input[type=range]{flex:1;height:6px;background:var(--border-light);border-radius:3px;outline:none;cursor:pointer}.password-length input[type=range]::-webkit-slider-thumb{appearance:none;width:20px;height:20px;background:var(--accent-primary);border-radius:50%;cursor:pointer}.copy-container{display:flex;align-items:center;gap:12px;width:100%;max-width:500px}.copy-input{flex:1;background:var(--surface-elevated);border:2px solid var(--border-light);padding:12px 16px;border-radius:8px;font-family:monospace;font-size:1rem;color:var(--text-primary)}.copy-button{padding:12px 20px;background:var(--accent-primary);color:#fff;border:none;border-radius:8px;cursor:pointer;font-weight:600;transition:all .2s ease}.copy-button:hover{background:var(--accent-secondary);transform:translateY(-1px)}.copy-button.copied{background:#28a745}.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}.utility-input:focus-visible,.utility-button:focus-visible,.utility-textarea:focus-visible{outline:2px solid var(--accent-primary);outline-offset:2px}@media (prefers-contrast: high){.utility-input,.utility-textarea,.utility-button{border-width:3px}.utility-button{background:var(--text-primary);color:var(--surface)}}@media (prefers-reduced-motion: reduce){.utility-input,.utility-button,.utility-textarea,.emoji-button{transition:none}.loading:after{animation:none}}.utility-results{width:100%;text-align:center;margin-top:24px}.utility-result{background:var(--gradient-soft);padding:24px;border-radius:16px;border:1px solid var(--primary-100);margin-bottom:16px}.utility-placeholder{color:var(--muted);font-size:1rem;padding:20px;background:var(--surface-2);border-radius:12px;font-style:italic}.result-header{font-size:1.3rem;margin-bottom:16px;display:flex;flex-direction:column;align-items:center;gap:12px}.result-value{margin-top:12px}.result-value strong{color:var(--primary);font-size:1.5rem}.result-description{color:var(--text-secondary);font-size:1rem;margin-bottom:16px;line-height:1.5}.result-details{background:#ffffffb3;padding:16px;border-radius:12px;border:1px solid var(--primary-100);display:flex;flex-direction:column;gap:8px}.result-label{color:var(--muted);font-size:.95rem}.result-range{color:var(--primary);font-size:1.1rem}.badge{padding:10px 16px;border-radius:12px;font-size:.9rem;font-weight:700;text-transform:uppercase;letter-spacing:.5px;display:inline-block}.badge.underweight{background:#e3f2fd;color:#1976d2;border:1px solid #bbdefb}.badge.normal{background:#e8f5e8;color:#388e3c;border:1px solid #c8e6c9}.badge.overweight{background:#fff3e0;color:#f57c00;border:1px solid #ffcc02}.badge.obese{background:#ffebee;color:#d32f2f;border:1px solid #ffcdd2}.info-section{margin-top:24px;opacity:.9}.info-title{color:var(--primary);margin-bottom:16px;font-size:1.2rem;font-weight:600}.info-content{color:var(--muted);font-size:.95rem;line-height:1.6}.info-details{margin-top:16px}.info-details strong{color:var(--primary);display:block;margin-bottom:8px}.info-details ul{margin-top:8px;padding-left:20px}.info-details li{margin-bottom:4px}.checkbox-group{display:flex;flex-direction:column;gap:12px;margin-bottom:24px;padding:16px;background:var(--surface-elevated);border-radius:12px;border:1px solid var(--border-light)}.checkbox-label{display:flex;align-items:center;gap:12px;cursor:pointer;font-size:1rem;color:var(--text-primary);transition:color .2s ease}.checkbox-label:hover{color:var(--accent-primary)}.utility-checkbox{width:18px;height:18px;accent-color:var(--accent-primary);cursor:pointer}.password-display{display:flex;flex-direction:column;gap:16px;align-items:center;max-width:100%}.password-text{color:var(--primary);font-size:1.3rem;font-weight:600;word-break:break-all;max-width:500px;text-align:center;padding:16px;background:#ffffffb3;border-radius:12px;border:1px solid var(--primary-100);font-family:Courier New,monospace;letter-spacing:1px}.copy-button.copied{background:var(--success, #4caf50)!important;color:#fff!important}input[type=range]{width:100%;height:6px;background:var(--border-light);border-radius:3px;outline:none;cursor:pointer;-webkit-appearance:none;appearance:none}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:20px;height:20px;background:var(--accent-primary);border-radius:50%;cursor:pointer}input[type=range]::-moz-range-thumb{width:20px;height:20px;background:var(--accent-primary);border-radius:50%;cursor:pointer;border:none}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:20px;padding:16px;background:#ffffff80;border-radius:12px;border:1px solid var(--primary-100)}.stat-item{display:flex;flex-direction:column;align-items:center;text-align:center;padding:12px;background:#fff;border-radius:8px;border:1px solid var(--border-light);transition:transform .2s ease,box-shadow .2s ease}.stat-item:hover{transform:translateY(-2px);box-shadow:0 4px 12px #0000001a}.stat-value{font-size:1.8rem;font-weight:700;color:var(--primary);margin-bottom:4px;line-height:1}.stat-label{font-size:.9rem;color:var(--text-secondary);font-weight:500;text-transform:uppercase;letter-spacing:.5px}@media (max-width: 600px){.stats-grid{grid-template-columns:repeat(2,1fr);gap:12px}.stat-value{font-size:1.5rem}.stat-label{font-size:.8rem}}.qr-options{margin-bottom:24px;padding:20px;background:var(--surface-elevated);border-radius:12px;border:1px solid var(--border-light)}.options-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px}.option-group{display:flex;flex-direction:column;gap:8px}.color-input-group{display:flex;align-items:center;gap:12px}.color-input{width:50px;height:40px;border:2px solid var(--border-light);border-radius:8px;cursor:pointer;background:none}.color-input::-webkit-color-swatch-wrapper{padding:0}.color-input::-webkit-color-swatch{border:none;border-radius:6px}.color-label{font-family:monospace;font-size:.9rem;color:var(--text-secondary);background:var(--surface);padding:4px 8px;border-radius:4px;border:1px solid var(--border-light)}.qr-display{display:flex;flex-direction:column;align-items:center;gap:20px;padding:20px}.qr-canvas{max-width:100%;height:auto;border-radius:12px;box-shadow:0 4px 12px #0000001a;background:#fff;padding:16px}.qr-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}@media (max-width: 768px){.options-grid{grid-template-columns:1fr;gap:16px}.qr-options{padding:16px}.color-input-group{justify-content:space-between}}.quick-amounts{display:flex;flex-direction:column;gap:12px;margin-bottom:24px}.quick-buttons{display:flex;gap:8px;flex-wrap:wrap}.quick-btn{min-width:60px;font-size:.9rem;padding:8px 16px}.currency-row{display:flex;align-items:end;gap:16px;margin-bottom:24px;flex-wrap:wrap}.currency-group{display:flex;flex-direction:column;gap:8px;flex:1;min-width:200px}.currency-select{min-width:200px}.swap-button{background:var(--accent-primary);color:#fff;border:none;border-radius:50%;width:40px;height:40px;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:1.2rem;transition:all .2s ease;margin-bottom:4px;flex-shrink:0}.swap-button:hover{background:var(--accent-secondary);transform:rotate(180deg)}.conversion-result{display:flex;flex-direction:column;gap:16px;text-align:center}.result-main{display:flex;align-items:center;justify-content:center;gap:16px;flex-wrap:wrap;font-size:1.2rem}.input-amount,.output-amount{font-weight:600;color:var(--primary);padding:12px 16px;background:#ffffffb3;border-radius:8px;border:1px solid var(--primary-100);min-width:120px}.output-amount{background:var(--accent-primary);color:#fff;font-size:1.3rem}.equals{font-size:1.5rem;font-weight:700;color:var(--text-secondary)}.exchange-rate{font-size:.95rem;color:var(--text-secondary);background:var(--surface-elevated);padding:8px 16px;border-radius:6px;border:1px solid var(--border-light)}.conversion-disclaimer{background:#fff3cd;color:#856404;padding:12px 16px;border-radius:8px;border:1px solid #ffeaa7;font-size:.9rem;text-align:center;margin-top:16px}@media (max-width: 768px){.currency-row{flex-direction:column;gap:12px}.currency-group{min-width:100%}.swap-button{align-self:center;transform:rotate(90deg)}.swap-button:hover{transform:rotate(270deg)}.result-main{flex-direction:column;gap:8px}.quick-buttons{justify-content:center}}.game-container{max-width:600px;margin:0 auto;text-align:center}.game-board{margin:24px auto;display:flex;flex-direction:column;align-items:center;gap:16px}.game-status{font-size:1.2rem;font-weight:600;margin-bottom:16px;min-height:28px;display:flex;align-items:center;justify-content:center}.game-controls{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:16px}.game-button{padding:12px 24px;background:var(--accent-primary);color:#fff;border:none;border-radius:8px;cursor:pointer;font-weight:600;transition:all .2s ease;font-size:1rem}.game-button:hover{background:var(--accent-secondary);transform:translateY(-1px)}.game-button:disabled{background:var(--border-light);color:var(--text-muted);cursor:not-allowed;transform:none}.tictactoe-grid{display:grid;grid-template-columns:repeat(3,80px);gap:8px;margin:0 auto;padding:16px;background:var(--surface-elevated);border-radius:12px;border:2px solid var(--primary-100)}.tictactoe-cell{width:80px;height:80px;font-size:2.5rem;font-weight:700;border:2px solid var(--primary);border-radius:8px;background:var(--surface);cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:center}.tictactoe-cell:hover:not(:disabled){background:var(--surface-elevated);transform:scale(1.05)}.tictactoe-cell:disabled{cursor:not-allowed}.tictactoe-cell.x{color:var(--accent-primary)}.tictactoe-cell.o{color:var(--warning)}.connectfour-board{display:grid;grid-template-columns:repeat(7,60px);gap:4px;padding:16px;background:#2563eb;border-radius:12px;margin:0 auto}.connectfour-cell{width:60px;height:60px;border-radius:50%;background:#fff;display:flex;align-items:center;justify-content:center;font-size:2rem;cursor:pointer;transition:all .2s ease}.connectfour-cell:hover{background:#f3f4f6;transform:scale(1.1)}.connectfour-column-button{background:var(--accent-primary);color:#fff;border:none;padding:8px 16px;border-radius:6px;cursor:pointer;font-weight:600;transition:all .2s ease}.connectfour-column-button:hover:not(:disabled){background:var(--accent-secondary);transform:translateY(-2px)}.connectfour-column-button:disabled{background:var(--border-light);cursor:not-allowed;transform:none}.game2048-grid{display:grid;grid-template-columns:repeat(4,80px);gap:8px;padding:16px;background:#bbada0;border-radius:12px;margin:0 auto}.game2048-tile{width:80px;height:80px;background:#cdc1b4;border-radius:6px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.8rem;transition:all .15s ease}.game2048-tile.tile-2{background:#eee4da;color:#776e65}.game2048-tile.tile-4{background:#ede0c8;color:#776e65}.game2048-tile.tile-8{background:#f2b179;color:#f9f6f2}.game2048-tile.tile-16{background:#f59563;color:#f9f6f2}.game2048-tile.tile-32{background:#f67c5f;color:#f9f6f2}.game2048-tile.tile-64{background:#f65e3b;color:#f9f6f2}.game2048-tile.tile-128{background:#edcf72;color:#f9f6f2;font-size:1.5rem}.game2048-tile.tile-256{background:#edcc61;color:#f9f6f2;font-size:1.5rem}.game2048-tile.tile-512{background:#edc850;color:#f9f6f2;font-size:1.5rem}.game2048-tile.tile-1024{background:#edc53f;color:#f9f6f2;font-size:1.2rem}.game2048-tile.tile-2048{background:#edc22e;color:#f9f6f2;font-size:1.2rem}.game2048-score{display:flex;gap:16px;justify-content:center;margin-bottom:16px}.score-box{background:var(--surface-elevated);padding:12px 20px;border-radius:8px;border:1px solid var(--border-light);text-align:center}.score-label{font-size:.9rem;color:var(--text-secondary);margin-bottom:4px}.score-value{font-size:1.3rem;font-weight:700;color:var(--primary)}.memory-grid{display:grid;grid-template-columns:repeat(4,80px);gap:12px;margin:24px auto;padding:16px;background:var(--surface-elevated);border-radius:12px;justify-content:center}.memory-card{width:80px;height:80px;background:var(--accent-primary);border-radius:8px;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:2rem;transition:all .3s ease;transform-style:preserve-3d}.memory-card.flipped{background:#fff;border:2px solid var(--primary)}.memory-card:hover:not(.flipped):not(.matched){background:var(--accent-secondary);transform:scale(1.05)}.memory-card.matched{background:var(--success);color:#fff}.rps-choices{display:flex;gap:16px;justify-content:center;margin:24px 0;flex-wrap:wrap}.rps-choice{width:100px;height:100px;border:3px solid var(--primary);border-radius:50%;background:var(--surface);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:3rem;transition:all .2s ease}.rps-choice:hover{background:var(--primary);color:#fff;transform:scale(1.1)}.rps-choice.selected{background:var(--accent-primary);color:#fff;border-color:var(--accent-primary)}.rps-result{display:flex;justify-content:space-around;align-items:center;margin:24px 0;flex-wrap:wrap;gap:16px}.rps-player{text-align:center;padding:16px;background:var(--surface-elevated);border-radius:12px;border:1px solid var(--border-light);min-width:120px}.rps-vs{font-size:1.5rem;font-weight:700;color:var(--text-secondary)}.snake-canvas{border:3px solid var(--primary);border-radius:8px;background:#f0f0f0;margin:16px auto;display:block}.snake-controls{display:grid;grid-template-columns:repeat(3,60px);gap:8px;margin:16px auto;justify-content:center}.snake-control-btn{width:60px;height:60px;border:2px solid var(--primary);background:var(--surface);border-radius:8px;cursor:pointer;font-size:1.5rem;transition:all .2s ease;display:flex;align-items:center;justify-content:center}.snake-control-btn:hover{background:var(--primary);color:#fff}.snake-control-btn:nth-child(1){grid-column:2}.snake-control-btn:nth-child(2){grid-column:1;grid-row:2}.snake-control-btn:nth-child(3){grid-column:3;grid-row:2}.snake-control-btn:nth-child(4){grid-column:2;grid-row:2}@media (max-width: 768px){.tictactoe-grid{grid-template-columns:repeat(3,70px);gap:6px;padding:12px}.tictactoe-cell{width:70px;height:70px;font-size:2rem}.connectfour-board{grid-template-columns:repeat(7,50px);gap:3px;padding:12px}.connectfour-cell{width:50px;height:50px;font-size:1.5rem}.game2048-grid{grid-template-columns:repeat(4,70px);gap:6px;padding:12px}.game2048-tile{width:70px;height:70px;font-size:1.5rem}.memory-grid{grid-template-columns:repeat(4,70px);gap:10px;padding:12px}.memory-card{width:70px;height:70px;font-size:1.8rem}.rps-choice{width:80px;height:80px;font-size:2.5rem}.snake-canvas{max-width:90vw;height:auto}}@media (max-width: 480px){.tictactoe-grid{grid-template-columns:repeat(3,60px)}.tictactoe-cell{width:60px;height:60px;font-size:1.8rem}.connectfour-board{grid-template-columns:repeat(7,40px)}.connectfour-cell{width:40px;height:40px;font-size:1.2rem}.game2048-grid{grid-template-columns:repeat(4,60px)}.game2048-tile{width:60px;height:60px;font-size:1.2rem}.memory-grid{grid-template-columns:repeat(4,60px)}.memory-card{width:60px;height:60px;font-size:1.5rem}.rps-choice{width:70px;height:70px;font-size:2rem}}:root{--bg-primary: #0a0f0b;--bg-secondary: #0f1510;--bg-tertiary: #1a2520;--surface: #ffffff;--surface-glass: rgba(255, 255, 255, .95);--surface-elevated: #fafbfa;--text-primary: #0d1b0e;--text-secondary: #4a635b;--text-inverse: #ffffff;--accent-primary: #00d64f;--accent-secondary: #00b943;--accent-tertiary: #009936;--accent-glow: rgba(0, 214, 79, .3);--border-light: #e8f0e8;--border-medium: #d0e0d0;--shadow-light: rgba(0, 214, 79, .08);--shadow-medium: rgba(0, 214, 79, .15);--shadow-heavy: rgba(0, 214, 79, .25);--gradient-primary: linear-gradient(135deg, #00d64f 0%, #00b943 50%, #009936 100%);--gradient-glass: linear-gradient(135deg, rgba(255,255,255,.95) 0%, rgba(255,255,255,.85) 100%);--gradient-dark: linear-gradient(135deg, #0a0f0b 0%, #1a2520 100%)}*{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,SF Pro Display,Inter,Roboto,sans-serif;background:var(--surface);color:var(--text-primary);line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{min-height:100vh;display:flex;flex-direction:column;position:relative}.glass-surface{background:var(--surface-glass);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.3);box-shadow:0 20px 40px var(--shadow-light)}.glass-dark{background:#0a0f0bd9;backdrop-filter:blur(30px);-webkit-backdrop-filter:blur(30px);border:1px solid rgba(0,214,79,.2)}.modern-card{background:var(--surface);border-radius:24px;padding:32px;box-shadow:0 4px 20px var(--shadow-light),0 1px 3px #0000000d;border:1px solid var(--border-light);transition:all .4s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden}.modern-card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--gradient-primary);opacity:0;transition:opacity .3s ease}.modern-card:hover:before{opacity:1}.modern-card:hover{transform:translateY(-8px);box-shadow:0 20px 40px var(--shadow-medium),0 8px 16px #0000001a;border-color:var(--accent-primary)}.modern-container{max-width:1400px;margin:0 auto;padding:0 24px}.hero-section{background:linear-gradient(135deg,var(--surface) 0%,var(--surface-elevated) 100%);position:relative;overflow:hidden}.hero-section:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 20% 50%,rgba(0,214,79,.1) 0%,transparent 50%),radial-gradient(circle at 80% 20%,rgba(0,214,79,.05) 0%,transparent 50%),radial-gradient(circle at 40% 80%,rgba(0,214,79,.08) 0%,transparent 50%);pointer-events:none}.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px;margin:48px 0}.category-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px;margin:32px 0}.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:32px;margin:48px 0}.modern-nav{background:var(--surface);border-bottom:1px solid var(--border-light);position:sticky;top:0;z-index:100;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px)}.nav-brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--text-primary);font-weight:700;font-size:1.1rem}.nav-logo{width:40px;height:40px;background:var(--gradient-primary);border-radius:12px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:900;font-size:1.1rem}.nav-links{display:flex;align-items:center;gap:32px}.nav-link{color:var(--text-primary);text-decoration:none;font-weight:600;font-size:.95rem;padding:12px 16px;border-radius:8px;transition:all .3s ease}.nav-link:hover{background:var(--bg-primary);color:var(--text-inverse);transform:translateY(-2px)}.nav-link.active{background:var(--gradient-primary);color:#fff}.nav-link-special{background:var(--gradient-primary)!important;color:#fff!important;font-weight:700;box-shadow:0 4px 12px #00d64f4d}.nav-link-special:hover{transform:translateY(-3px);box-shadow:0 6px 20px #00d64f66}.nav-link:focus{outline:2px solid var(--accent-primary);outline-offset:2px}.nav-dropdown-item{cursor:pointer;transition:all .2s ease}.nav-dropdown-item:hover{background:var(--surface-elevated)!important;color:var(--text-primary)!important;transform:translate(4px)}.nav-dropdown{position:relative;z-index:1000}.nav-dropdown-menu{position:absolute;z-index:1001;pointer-events:auto;-webkit-user-select:none;user-select:none;animation:dropdownFadeIn .2s ease-out}@keyframes dropdownFadeIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.nav-dropdown-menu .nav-dropdown-item{pointer-events:auto;-webkit-user-select:none;user-select:none;display:block!important}@media (max-width: 768px){.nav-links{display:none;position:absolute;top:100%;left:0;right:0;background:var(--surface);border-top:1px solid var(--border-light);flex-direction:column;padding:20px;gap:16px;box-shadow:0 10px 30px var(--shadow-medium)}.nav-links.mobile-open{display:flex}.mobile-menu-button{display:block;background:none;border:none;color:var(--text-primary);font-size:1.5rem;cursor:pointer;padding:8px;border-radius:8px;transition:background .3s ease}.mobile-menu-button:hover{background:var(--surface-elevated)}}@media (min-width: 769px){.mobile-menu-button{display:none}}.modern-form{display:flex;flex-direction:column;gap:24px}.form-group{display:flex;flex-direction:column;gap:8px}.form-row{display:grid;gap:20px;grid-template-columns:1fr}.form-row.cols-2{grid-template-columns:1fr 1fr}.form-row.cols-3{grid-template-columns:1fr 1fr 1fr}.form-label{font-weight:600;color:var(--text-primary);font-size:.95rem;margin-bottom:4px}.form-input,.form-select,.form-textarea{padding:16px 20px;border:2px solid var(--border-light);border-radius:16px;font-size:1rem;font-family:inherit;background:var(--surface);color:var(--text-primary);transition:all .3s ease;outline:none}.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--accent-primary);box-shadow:0 0 0 4px var(--accent-glow);background:var(--surface-elevated)}.form-button{background:var(--gradient-primary);border:none;border-radius:16px;padding:18px 32px;font-size:1.1rem;font-weight:600;color:#fff;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 16px var(--shadow-light);position:relative;overflow:hidden}.form-button:hover{transform:translateY(-3px);box-shadow:0 8px 24px var(--shadow-medium)}.form-button:active{transform:translateY(-1px)}.form-button:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.3),transparent);transition:left .5s}.form-button:hover:before{left:100%}.result-display{background:var(--surface-elevated);border:2px solid var(--border-light);border-radius:20px;padding:32px;text-align:center;margin-top:32px;position:relative;overflow:hidden}.result-display:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--gradient-primary)}.result-value{font-size:2rem;font-weight:800;color:var(--accent-primary);margin-bottom:8px;letter-spacing:-1px}.result-label{font-size:1.1rem;color:var(--text-secondary);font-weight:500}.feature-card{background:var(--surface);border-radius:24px;padding:40px;box-shadow:0 8px 32px var(--shadow-light);border:1px solid var(--border-light);transition:all .4s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden;cursor:pointer;text-decoration:none;color:inherit}.feature-card:before{content:"";position:absolute;top:0;left:0;right:0;height:6px;background:var(--gradient-primary);transform:scaleX(0);transform-origin:left;transition:transform .3s ease}.feature-card:hover:before{transform:scaleX(1)}.feature-card:hover{transform:translateY(-12px);box-shadow:0 20px 48px var(--shadow-medium);border-color:var(--accent-primary)}.feature-icon{width:64px;height:64px;border-radius:20px;background:var(--gradient-primary);display:flex;align-items:center;justify-content:center;font-size:1.8rem;color:#fff;margin-bottom:24px;box-shadow:0 8px 24px var(--accent-glow)}.feature-title{font-size:1.4rem;font-weight:700;color:var(--text-primary);margin-bottom:12px;letter-spacing:-.5px}.feature-description{color:var(--text-secondary);font-size:1rem;line-height:1.6;margin-bottom:20px}.feature-badge{display:inline-flex;align-items:center;padding:6px 12px;background:#00d64f1a;color:var(--accent-primary);border-radius:20px;font-size:.85rem;font-weight:600}.category-header{text-align:center;margin:64px 0 40px}.category-title{font-size:2.5rem;font-weight:800;color:var(--text-primary);margin-bottom:16px;letter-spacing:-1px;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.category-subtitle{font-size:1.2rem;color:var(--text-secondary);font-weight:500;max-width:600px;margin:0 auto}.hero-content{text-align:center;padding:120px 0;position:relative;z-index:2}.hero-title{font-size:4rem;font-weight:900;color:var(--text-primary);margin-bottom:24px;letter-spacing:-2px;line-height:1.1}.hero-subtitle{font-size:1.4rem;color:var(--text-secondary);margin-bottom:40px;font-weight:500;max-width:600px;margin-left:auto;margin-right:auto}.hero-cta{display:inline-flex;align-items:center;gap:12px;background:var(--gradient-primary);color:#fff;padding:20px 40px;border-radius:20px;text-decoration:none;font-weight:700;font-size:1.1rem;box-shadow:0 8px 32px var(--accent-glow);transition:all .3s ease}.hero-cta:hover{transform:translateY(-4px);box-shadow:0 16px 48px var(--accent-glow)}.status-badge{display:inline-flex;align-items:center;padding:8px 16px;border-radius:20px;font-size:.875rem;font-weight:600;gap:6px}.status-badge.success{background:#00d64f1a;color:var(--accent-primary);border:1px solid rgba(0,214,79,.2)}.status-badge.warning{background:#ffc1071a;color:#f57c00;border:1px solid rgba(255,193,7,.2)}.status-badge.error{background:#f443361a;color:#d32f2f;border:1px solid rgba(244,67,54,.2)}.status-badge.info{background:#2196f31a;color:#1976d2;border:1px solid rgba(33,150,243,.2)}.data-row{display:flex;justify-content:space-between;align-items:center;padding:16px 0;border-bottom:1px solid var(--border-light)}.data-row:last-child{border-bottom:none}.data-label{font-weight:600;color:var(--text-primary)}.data-value{font-weight:500;color:var(--text-secondary)}.loading-spinner{display:inline-block;width:24px;height:24px;border:3px solid var(--border-light);border-radius:50%;border-top-color:var(--accent-primary);animation:spin 1s ease-in-out infinite}@keyframes spin{to{transform:rotate(360deg)}}.fade-in{animation:fadeIn .6s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.slide-up{animation:slideUp .4s ease-out}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@media (max-width: 1200px){.hero-title{font-size:3.5rem}.tool-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}}@media (max-width: 768px){.hero-title{font-size:2.5rem}.hero-subtitle{font-size:1.2rem}.modern-card{padding:24px}.feature-card{padding:32px}.form-row.cols-2,.form-row.cols-3{grid-template-columns:1fr}.nav-links{flex-direction:column;gap:4px}.category-title{font-size:2rem}.tool-grid{grid-template-columns:1fr;gap:16px}}@media (max-width: 480px){.modern-container{padding:0 16px}.hero-content{padding:80px 0}.hero-title{font-size:2rem}.feature-card{padding:24px}.modern-card{padding:20px}}.text-center{text-align:center}.text-left{text-align:left}.text-right{text-align:right}.mb-0{margin-bottom:0}.mb-1{margin-bottom:8px}.mb-2{margin-bottom:16px}.mb-3{margin-bottom:24px}.mb-4{margin-bottom:32px}.mt-0{margin-top:0}.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mt-3{margin-top:24px}.mt-4{margin-top:32px}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-2{gap:16px}.gap-3{gap:24px}.gap-4{gap:32px}