*{margin:0;padding:0;box-sizing:border-box}:root{--bg:#060609;--surface:#0d0d12;--surface2:#14141b;--border:#1e1e2a;--text:#e0e0e0;--text2:#888;--accent:#ff4d4d;--accent2:#ff6b6b;--font:"JetBrains Mono",monospace}body{background:var(--bg);color:var(--text);font-family:var(--font);line-height:1.6;min-height:100vh}a{color:var(--accent)}header{text-align:center;padding:3rem 1rem 2rem;border-bottom:1px solid var(--border)}header h1{font-size:2rem;color:var(--accent);margin-bottom:.3rem}header p{color:var(--text2);font-size:.85rem}.grid{max-width:1200px;margin:2rem auto;padding:0 1rem;display:grid;grid-template-columns:repeat(auto-fill,minmax(540px,1fr));gap:1.5rem}@media(max-width:600px){.grid{grid-template-columns:1fr}}.card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:1.5rem;transition:border-color .2s}.card:hover{border-color:var(--accent)}.card h2{font-size:1rem;color:var(--accent);margin-bottom:1rem;display:flex;align-items:center;gap:.5rem}.card h2 span{font-size:1.2rem}textarea,input[type=text],input[type=number],select{width:100%;background:var(--surface2);border:1px solid var(--border);color:var(--text);font-family:var(--font);font-size:.85rem;padding:.6rem;border-radius:6px;resize:vertical;outline:none;transition:border-color .2s}textarea:focus,input:focus,select:focus{border-color:var(--accent)}textarea{min-height:80px}.row{display:flex;gap:.5rem;margin-top:.5rem;flex-wrap:wrap;align-items:center}.row>*{flex:1;min-width:0}button{background:var(--accent);color:#fff;border:none;font-family:var(--font);font-size:.8rem;padding:.5rem 1rem;border-radius:6px;cursor:pointer;font-weight:600;transition:background .2s;white-space:nowrap;flex:none}button:hover{background:var(--accent2)}button.secondary{background:var(--surface2);border:1px solid var(--border)}button.secondary:hover{border-color:var(--accent)}label{font-size:.75rem;color:var(--text2);display:block;margin-top:.5rem;margin-bottom:.25rem}.output{background:var(--surface2);border:1px solid var(--border);border-radius:6px;padding:.6rem;font-size:.85rem;min-height:40px;word-break:break-all;margin-top:.5rem;white-space:pre-wrap}.error{color:var(--accent)}.success{color:#4dff88}.match{background:#ff4d4d40;border-radius:2px;padding:0 1px}footer{text-align:center;padding:2rem;color:var(--text2);font-size:.75rem;border-top:1px solid var(--border);margin-top:2rem}.color-preview{height:40px;border-radius:6px;margin-top:.5rem;border:1px solid var(--border)}.output-scroll{max-height:300px;overflow:auto}.output-copyable{cursor:pointer}.output-wrapper{position:relative;margin-top:.5rem}.output-wrapper .output{margin-top:0}.copy-btn{position:absolute;top:6px;right:6px;background:var(--surface);border:1px solid var(--border);color:var(--text2);font-family:var(--font);font-size:.7rem;padding:2px 8px;border-radius:4px;cursor:pointer;display:flex;align-items:center;gap:4px;opacity:0;transition:opacity .2s,border-color .2s,color .2s;z-index:1}.output-wrapper:hover .copy-btn,.copy-btn:focus{opacity:1}.copy-btn:hover{border-color:var(--accent);color:var(--text)}.copy-btn.copied{color:#4dff88;border-color:#4dff88;opacity:1}.copy-btn svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.flex-2{flex:2}.flex-none{flex:none}.pt-row{padding-top:1.2rem}.regex-info{font-size:.75rem;color:var(--text2);margin-top:.3rem}.card-wide{grid-column:1/-1}.md-split{display:flex;gap:1rem}.md-split .md-pane{flex:1;min-width:0;display:flex;flex-direction:column}.md-split textarea{flex:1;min-height:250px;resize:vertical}.md-preview{min-height:250px;max-height:500px;overflow:auto;line-height:1.7;word-break:break-word;white-space:normal}.md-preview h1,.md-preview h2,.md-preview h3,.md-preview h4,.md-preview h5,.md-preview h6{color:var(--accent);margin:.8em 0 .4em;line-height:1.3}.md-preview h1{font-size:1.5rem;border-bottom:1px solid var(--border);padding-bottom:.3rem}.md-preview h2{font-size:1.25rem;border-bottom:1px solid var(--border);padding-bottom:.2rem}.md-preview h3{font-size:1.1rem}.md-preview p{margin:.5em 0}.md-preview a{color:var(--accent2);text-decoration:underline}.md-preview code{background:var(--bg);padding:.15em .4em;border-radius:3px;font-size:.9em}.md-preview pre{background:var(--bg);padding:.8rem;border-radius:6px;overflow-x:auto;margin:.5em 0}.md-preview pre code{background:none;padding:0}.md-preview blockquote{border-left:3px solid var(--accent);padding:.5rem 1rem;margin:.5em 0;color:var(--text2);background:var(--bg)}.md-preview ul,.md-preview ol{margin:.5em 0;padding-left:1.5em}.md-preview li{margin:.2em 0}.md-preview strong{color:#fff}.md-preview hr{border:none;border-top:1px solid var(--border);margin:1em 0}@media(max-width:600px){.md-split{flex-direction:column}}.diff-inputs{display:flex;gap:.75rem;margin-bottom:.5rem}.diff-col{flex:1;min-width:0}.diff-col label{font-size:.75rem;color:var(--text2);display:block;margin-bottom:.25rem}@media(max-width:600px){.diff-inputs{flex-direction:column}}.diff-add{color:#4dff88;background:#4dff8814}.diff-del{color:var(--accent);background:#ff4d4d14}.diff-eq{color:var(--text2)}#search-input{max-width:400px;margin:1rem auto 0;display:block;font-size:.9rem;padding:.7rem 1rem;border-radius:8px;background:var(--surface2);border:1px solid var(--border);color:var(--text);font-family:var(--font);outline:none;transition:border-color .2s}#search-input:focus{border-color:var(--accent)}#search-input::placeholder{color:var(--text2)}.card.hidden{display:none}.card.highlighted{border-color:var(--accent);box-shadow:0 0 20px #ff4d4d4d}@media(max-width:768px){header{position:sticky;top:0;z-index:100;background:var(--bg);padding:1rem 1rem .8rem}header h1{font-size:1.4rem}header p{font-size:.75rem}#search-input{margin-top:.6rem;font-size:1rem;padding:.8rem 1rem}.grid{margin-top:1rem}.card{padding:1rem}.card h2{margin-bottom:0;cursor:pointer;-webkit-user-select:none;user-select:none;padding:.3rem 0;min-height:44px;position:relative}.card h2:after{content:"▸";position:absolute;right:0;transition:transform .2s;font-size:.8rem;color:var(--text2)}.card.open h2:after{transform:rotate(90deg)}.card .card-body{display:none;padding-top:.8rem}.card.open .card-body{display:block}button{font-size:.9rem;padding:.7rem 1.2rem;min-height:44px}textarea,input[type=text],input[type=number],select{font-size:1rem;padding:.8rem;min-height:44px}textarea{min-height:100px}}#help-overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:#060609d9;z-index:1000;justify-content:center;align-items:center;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}#help-overlay.visible{display:flex}#help-overlay .help-modal{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:2rem;max-width:420px;width:90%}#help-overlay .help-modal h2{color:var(--accent);font-size:1.1rem;margin-bottom:1rem}#help-overlay .help-modal table{width:100%;border-collapse:collapse}#help-overlay .help-modal td{padding:.4rem 0;font-size:.85rem}#help-overlay .help-modal td:first-child{color:var(--text2);white-space:nowrap;padding-right:1.5rem}#help-overlay .help-modal kbd{background:var(--surface2);border:1px solid var(--border);border-radius:4px;padding:.15rem .4rem;font-family:var(--font);font-size:.8rem}#help-overlay .help-modal .help-close{color:var(--text2);font-size:.75rem;margin-top:1rem;text-align:center}.stat{display:flex;flex-direction:column;align-items:center;flex:1;padding:.75rem;background:var(--surface2);border-radius:8px;border:1px solid var(--border)}.stat-value{font-size:1.5rem;font-weight:700;color:var(--accent)}.stat-label{font-size:.75rem;color:var(--text2);margin-top:.25rem}
