:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#1a1a2e;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh}#root{min-height:100vh;display:flex;flex-direction:column}a{font-weight:500;color:#4cc9f0;text-decoration:none}a:hover{color:#7209b7}h1{font-size:2.5em;line-height:1.1;margin:0;background:linear-gradient(135deg,#4cc9f0,#7209b7);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}h2{font-size:1.8em;color:#e0e0e0;margin-top:0}h3{font-size:1.3em;color:#b0b0b0}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background:linear-gradient(135deg,#4361ee,#7209b7);color:#fff;cursor:pointer;transition:all .25s ease}button:hover{transform:translateY(-2px);box-shadow:0 4px 15px #7209b766}button:disabled{opacity:.5;cursor:not-allowed;transform:none}input,select{padding:.6em 1em;border-radius:8px;border:1px solid #3a3a5c;background-color:#16213e;color:#fff;font-size:1em;font-family:inherit}input:focus,select:focus{outline:2px solid #4cc9f0;border-color:transparent}.container{max-width:1400px;margin:0 auto;padding:0 2rem}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#f0f4f8}input,select{background-color:#fff;color:#213547;border-color:#d0d0d0}}.header{background:linear-gradient(135deg,#16213e,#1a1a2e);padding:1rem 2rem;border-bottom:1px solid #3a3a5c;position:sticky;top:0;z-index:100}.header-content{max-width:1400px;margin:0 auto;display:flex;justify-content:space-between;align-items:center}.nav-links{display:flex;gap:1.5rem}.nav-link{color:#b0b0b0;text-decoration:none;padding:.5rem 1rem;border-radius:6px;transition:all .2s}.nav-link:hover,.nav-link.active{color:#fff;background:#4cc9f01a}.main-content{flex:1;padding:2rem}.categories{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.5rem;margin-top:2rem}.category-card{background:linear-gradient(145deg,#16213e,#1f2b4d);border-radius:16px;padding:1.5rem;border:1px solid #3a3a5c;transition:all .3s ease;text-decoration:none;color:inherit}.category-card:hover{transform:translateY(-5px);box-shadow:0 10px 30px #0000004d;border-color:#4cc9f0}.category-icon{font-size:2.5rem;margin-bottom:1rem}.category-card h3{margin:0 0 .5rem;color:#fff}.category-card p{margin:0;color:#888;font-size:.9rem}.category-count{display:inline-block;background:linear-gradient(135deg,#4361ee,#7209b7);padding:.2rem .6rem;border-radius:20px;font-size:.8rem;margin-top:.5rem}.algorithm-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:1rem;margin-top:1rem}.algorithm-item{background:#16213e;border-radius:10px;padding:1rem;border:1px solid #3a3a5c;cursor:pointer;transition:all .2s}.algorithm-item:hover{border-color:#4cc9f0;background:#1f2b4d}.visualization{background:#16213e;border-radius:16px;padding:2rem;margin:1rem 0;border:1px solid #3a3a5c;min-height:300px}.visualization-controls{display:flex;gap:1rem;margin-bottom:1rem;flex-wrap:wrap;align-items:center}.visualization-array{display:flex;gap:4px;justify-content:center;align-items:flex-end;height:250px;padding:1rem 0}.array-bar{width:30px;background:linear-gradient(180deg,#4cc9f0,#4361ee);border-radius:4px 4px 0 0;transition:all .2s ease;display:flex;justify-content:center;align-items:flex-end;padding-bottom:4px;font-size:.7rem;color:#fff}.array-bar.comparing{background:linear-gradient(180deg,#f72585,#b5179e)}.array-bar.swapped{background:linear-gradient(180deg,#ff9f1c,#ffbf69)}.array-bar.sorted{background:linear-gradient(180deg,#06d6a0,#1b9aaa)}.code-block{background:#0d1421;border-radius:10px;padding:1rem;overflow-x:auto;font-family:Fira Code,Consolas,monospace;font-size:.9rem;margin:1rem 0}.code-block pre{margin:0;white-space:pre-wrap;word-break:break-word}.complexity-table{width:100%;border-collapse:collapse;margin:1rem 0}.complexity-table th,.complexity-table td{padding:.75rem 1rem;text-align:left;border-bottom:1px solid #3a3a5c}.complexity-table th{background:#16213e;color:#4cc9f0}.complexity-table tr:hover{background:#4cc9f00d}.complexity-good{color:#06d6a0}.complexity-ok{color:#ffd166}.complexity-bad{color:#ef476f}.breadcrumb{display:flex;gap:.5rem;margin-bottom:1rem;color:#888;font-size:.9rem}.breadcrumb a{color:#4cc9f0}.breadcrumb span{color:#888}.info-box{background:#4cc9f01a;border-left:4px solid #4cc9f0;padding:1rem;margin:1rem 0;border-radius:0 8px 8px 0}.info-box h4{margin:0 0 .5rem;color:#4cc9f0}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:2rem}@media(max-width:768px){.grid-2{grid-template-columns:1fr}.nav-links{display:none}}.speed-control{display:flex;align-items:center;gap:.5rem}.speed-control input[type=range]{width:100px}.step-counter{background:#16213e;padding:.5rem 1rem;border-radius:20px;font-size:.9rem}.description{color:#b0b0b0;line-height:1.7;margin:1rem 0}.tags{display:flex;gap:.5rem;flex-wrap:wrap;margin:1rem 0}.tag{background:#7209b733;color:#b5179e;padding:.3rem .8rem;border-radius:20px;font-size:.85rem}