:root{--ink:#101313;--paper:#f2f1ed;--accent:#e84b28;--accent2:#ff9a78;--blue:#2f7cf6;--green:#16a34a;--red:#ff5c5c;--muted:#9aa3a0;--panel:#151a1a;--line:#2a3131;--bg:#0b0e0e;--code:#0d1111;--mono:"JetBrains Mono","Fira Code",Consolas,"SFMono-Regular",Menlo,monospace}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0}
body.cl{background:var(--bg);color:var(--paper);font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;overflow-x:hidden}
code,kbd{font-family:var(--mono);font-size:.92em}
kbd{background:#232a2a;border:1px solid #3a4444;border-bottom-width:2px;border-radius:5px;padding:0 5px;color:#fff}
.cl-top{display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding:12px 18px;border-bottom:1px solid var(--line);background:#0d1111}
.cl-brand{display:flex;align-items:center;gap:8px;color:var(--paper);text-decoration:none;font-weight:700;font-size:14px}
.cl-title{margin:0;font-size:20px;letter-spacing:-.5px}.cl-title b{color:var(--accent)}
.cl-beta{margin-left:8px;font-size:11px;padding:2px 7px;border-radius:999px;background:#2a1a14;color:var(--accent2);vertical-align:middle}
.cl-tabs{display:flex;gap:6px;background:#151a1a;border-radius:999px;padding:4px}
.cl-tabs button{border:0;background:transparent;color:var(--muted);padding:8px 14px;border-radius:999px;font:inherit;font-weight:600;cursor:pointer}
.cl-tabs button.active{background:var(--accent);color:#fff}
.cl-top-actions{margin-left:auto;display:flex;gap:8px;flex-wrap:wrap}
.cl-btn{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:#151a1a;color:var(--paper);padding:8px 12px;border-radius:10px;font:inherit;font-size:14px;cursor:pointer;text-decoration:none;white-space:nowrap}
.cl-btn:hover:not(:disabled){border-color:#4a5555}
.cl-btn:disabled{opacity:.45;cursor:default}
.cl-btn.primary{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:700}
.cl-btn.primary:hover:not(:disabled){background:#ff5a35}
.cl-btn.check{background:#123322;border-color:#1f6b3e;color:#b6f0c8;font-weight:700}
.cl-btn.ghost{background:transparent}
.cl-main{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,40%);height:calc(100vh - 62px);min-height:520px}
.cl-editor-col{display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--code)}
.cl-toolbar{display:flex;flex-wrap:wrap;gap:8px;align-items:center;padding:10px 12px;border-bottom:1px solid var(--line)}
.cl-spacer{flex:1}
.cl-select{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--muted);min-width:0}
.cl-select select{background:#151a1a;color:var(--paper);border:1px solid var(--line);border-radius:10px;padding:7px 8px;font:inherit;font-size:14px;max-width:230px;min-width:0}
.cl-challenge-bar{padding:12px 14px;border-bottom:1px solid var(--line);background:linear-gradient(90deg,#2a1a14,#151a1a);font-size:14px;line-height:1.55}
.cl-challenge-bar h2{margin:0 0 4px;font-size:16px;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.cl-challenge-bar p{margin:0;color:#e4dcd6}
.cl-challenge-bar .cl-mini{margin-left:auto}
.cl-editor{flex:1;min-height:0;position:relative}
.cl-editor textarea{width:100%;height:100%;border:0;resize:none;background:var(--code);color:#e6e6e6;font-family:var(--mono);font-size:14px;line-height:1.55;padding:12px;tab-size:4;outline:none}
.cl-editor .CodeMirror{position:absolute;inset:0;height:auto;font-family:var(--mono);font-size:14px;line-height:1.55;background:var(--code);color:#e6e6e6}
.cl-status{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;padding:6px 12px;font-size:12px;color:var(--muted);border-top:1px solid var(--line);background:#0b0e0e}
.cl-status .busy::before{content:"";display:inline-block;width:10px;height:10px;margin-right:6px;border:2px solid var(--accent);border-right-color:transparent;border-radius:50%;animation:clspin .8s linear infinite;vertical-align:-1px}
@keyframes clspin{to{transform:rotate(360deg)}}
.cl-side{display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--panel);border-left:1px solid var(--line);padding:12px}
.cl-seg{display:flex;background:#0d1111;border-radius:12px;padding:4px;margin-bottom:10px;flex:none}
.cl-seg button{flex:1;border:0;background:transparent;color:var(--muted);padding:8px;border-radius:9px;font:inherit;font-weight:600;cursor:pointer;font-size:14px}
.cl-seg button.on{background:#232a2a;color:#fff}
.cl-count{font-size:11px;background:#2a1a14;color:var(--accent2);padding:1px 6px;border-radius:999px}
.cl-pane{display:flex;flex-direction:column;min-height:0;flex:1;overflow:auto}
.cl-pane[hidden]{display:none}
.cl-sub{margin:0 0 12px;color:var(--muted);font-size:13px;line-height:1.5}
.cl-stdin{margin-bottom:10px}
.cl-stdin label{display:flex;justify-content:space-between;gap:8px;font-size:13px;color:#c9cbc6;margin-bottom:4px}
.cl-stdin small{color:var(--muted)}
.cl-stdin textarea{width:100%;background:var(--code);color:#fff;border:1px solid var(--line);border-radius:10px;padding:8px;font-family:var(--mono);font-size:13px;resize:vertical}
.cl-out-head{display:flex;justify-content:space-between;align-items:center;font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:6px}
.cl-mini{border:1px solid var(--line);background:transparent;color:#c9cbc6;border-radius:8px;padding:3px 9px;font:inherit;font-size:12px;cursor:pointer}
.cl-mini:hover{border-color:#4a5555;color:#fff}
.cl-output{flex:1;min-height:160px;overflow:auto;background:#070909;border:1px solid var(--line);border-radius:12px;padding:10px 12px;font-family:var(--mono);font-size:13px;line-height:1.5;white-space:pre-wrap;word-break:break-word;color:#dfe3e1}
.cl-output .err{color:#ffb3b3}
.cl-output .warn{color:#ffd58a}
.cl-output .sys{color:var(--muted);font-style:italic}
.cl-output .ok{color:#8ee6a8}
.cl-output .tle{display:block;margin:6px 0;padding:8px 10px;border-radius:10px;background:rgba(255,92,92,.12);border:1px solid rgba(255,92,92,.35);color:#ffc7c7;font-style:normal;white-space:normal;font-family:Inter,system-ui,sans-serif}
.cl-hint{margin:0;color:var(--muted);font-family:Inter,system-ui,sans-serif;white-space:normal}
.cl-sql-block{margin:6px 0 14px;white-space:normal}
.cl-sql-q{color:var(--muted);font-size:12px;margin-bottom:4px;white-space:pre-wrap}
.cl-sql-meta{color:var(--muted);font-size:12px;margin-top:4px}
.cl-table{overflow-x:auto;max-width:100%;border-radius:8px;border:1px solid var(--line)}
.cl-table table{border-collapse:collapse;width:100%;font-size:12.5px}
.cl-table th{position:sticky;top:0;background:#1b2222;color:var(--accent2);text-align:left;font-weight:700}
.cl-table th,.cl-table td{padding:5px 9px;border-bottom:1px solid #1d2424;white-space:nowrap}
.cl-table tr:nth-child(even) td{background:#0c1010}
.cl-table td.num{text-align:right;font-variant-numeric:tabular-nums}
.cl-table td.null{color:var(--muted);font-style:italic}
.cl-tests{margin-top:10px;background:#0d1111;border:1px solid var(--line);border-radius:12px;padding:10px 12px;font-size:13px;flex:none}
.cl-tests h3{margin:0 0 8px;font-size:15px;display:flex;align-items:center;gap:8px}
.cl-tests ul{list-style:none;margin:0;padding:0}
.cl-tests li{display:flex;gap:8px;padding:5px 0;border-top:1px solid #1d2424;line-height:1.45}
.cl-tests li:first-child{border-top:0}
.cl-tests .mark{flex:none;width:20px;height:20px;border-radius:50%;display:grid;place-items:center;font-size:12px;font-weight:800}
.cl-tests .pass .mark{background:#123322;color:#8ee6a8}
.cl-tests .fail .mark{background:#3a1515;color:#ffb3b3}
.cl-tests .detail{display:block;color:var(--muted);font-family:var(--mono);font-size:12px;word-break:break-word}
.cl-bar{height:8px;border-radius:999px;background:#232a2a;overflow:hidden;margin-bottom:8px}
.cl-bar i{display:block;height:100%;background:var(--green);transition:width .4s}
.cl-win{color:#8ee6a8}
.cl-reto-list{display:grid;gap:10px}
.cl-reto{display:block;width:100%;text-align:left;border:1px solid var(--line);background:#0d1111;color:var(--paper);border-radius:14px;padding:12px 14px;cursor:pointer;font:inherit}
.cl-reto:hover{border-color:#4a5555}
.cl-reto.on{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent) inset}
.cl-reto-head{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:4px}
.cl-reto-head b{font-size:15px}
.cl-reto p{margin:0;font-size:13px;color:#c9cbc6;line-height:1.45}
.cl-tag{font-size:11px;font-weight:700;padding:2px 8px;border-radius:999px;background:#232a2a;color:#dfe3e1}
.cl-tag.js{background:#3a3412;color:#ffe27a}.cl-tag.py{background:#12283a;color:#8fc8ff}.cl-tag.sql{background:#2a173a;color:#d6a8ff}
.cl-tag.done{background:#123322;color:#8ee6a8}
.cl-schema{display:grid;gap:10px}
.cl-schema details{background:#0d1111;border:1px solid var(--line);border-radius:12px;padding:8px 12px}
.cl-schema summary{cursor:pointer;font-family:var(--mono);font-weight:700;color:var(--accent2)}
.cl-schema summary small{color:var(--muted);font-weight:400}
.cl-schema ul{margin:8px 0 2px;padding-left:18px;font-family:var(--mono);font-size:12.5px;color:#dfe3e1;line-height:1.6}
.cl-schema .cl-mini{margin-top:6px}
.cl-toast{position:fixed;left:50%;bottom:22px;transform:translateX(-50%);z-index:30;background:#1b2222;border:1px solid var(--accent);color:#fff;padding:10px 16px;border-radius:12px;font-size:14px;max-width:calc(100vw - 32px);box-shadow:0 10px 30px rgba(0,0,0,.4)}
.cl-learn{max-width:1100px;margin:0 auto;padding:40px 18px 60px;color:#dfe3e1}
.cl-learn h2{font-size:26px;margin:0 0 10px;color:#fff}
.cl-learn-lead{margin:0 0 18px;line-height:1.65;font-size:16px;max-width:820px}
.cl-learn-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}
.cl-learn-grid section{background:#121717;border:1px solid var(--line);border-radius:18px;padding:18px}
.cl-learn h3{margin:0 0 8px;color:var(--accent);font-size:17px}.cl-learn-grid p{margin:0;line-height:1.6;font-size:15px}
.cl-links{margin-top:20px;line-height:1.6}.cl-learn a{color:var(--accent2)}
.cl-autotest{position:fixed;z-index:40;top:8px;left:8px;right:8px;max-height:45vh;overflow:auto;background:#000;color:#9f9;padding:10px;border-radius:10px;font-size:12px;white-space:pre-wrap;font-family:var(--mono);border:1px solid #2a3131}
.cl-autotest .bad{color:#f88}
/* CodeMirror: tema propio */
.cm-s-te.CodeMirror{background:var(--code);color:#e6e6e6}
.cm-s-te .CodeMirror-gutters{background:#0b0e0e;border-right:1px solid var(--line)}
.cm-s-te .CodeMirror-linenumber{color:#4f5b58}
.cm-s-te .CodeMirror-cursor{border-left:2px solid var(--accent)}
.cm-s-te div.CodeMirror-selected,.cm-s-te.CodeMirror-focused div.CodeMirror-selected{background:#3a2419}
.cm-s-te .CodeMirror-line::selection,.cm-s-te .CodeMirror-line>span::selection,.cm-s-te .CodeMirror-line>span>span::selection{background:#3a2419}
.cm-s-te .CodeMirror-activeline-background{background:#121818}
.cm-s-te .cm-keyword{color:#ff7a59;font-weight:600}
.cm-s-te .cm-def{color:#ffd166}
.cm-s-te .cm-variable{color:#e6e6e6}.cm-s-te .cm-variable-2{color:#9cdcfe}.cm-s-te .cm-variable-3,.cm-s-te .cm-type{color:#4ec9b0}
.cm-s-te .cm-builtin{color:#4ec9b0}
.cm-s-te .cm-property{color:#9cdcfe}
.cm-s-te .cm-operator{color:#d4d4d4}
.cm-s-te .cm-number{color:#b5cea8}
.cm-s-te .cm-string,.cm-s-te .cm-string-2{color:#f0b37e}
.cm-s-te .cm-comment{color:#6a7f78;font-style:italic}
.cm-s-te .cm-atom{color:#c586c0}
.cm-s-te .cm-meta{color:#c586c0}
.cm-s-te .cm-bracket{color:#d4d4d4}
.cm-s-te .CodeMirror-matchingbracket{color:#fff!important;background:#3a2419;outline:1px solid #6b3b28}
.cm-s-te .cl-errline{background:rgba(255,92,92,.16)}
.cm-s-te .cl-errgutter{color:#ff5c5c!important;font-weight:800}
@media(max-width:900px){
  .cl-main{grid-template-columns:1fr;height:auto;min-height:0}
  .cl-editor-col{height:auto}
  .cl-editor{height:44vh;min-height:280px;flex:none}
  .cl-side{border-left:0;border-top:1px solid var(--line)}
  .cl-pane{overflow:visible}
  .cl-output{min-height:200px;max-height:60vh}
  .cl-top-actions{margin-left:0}
  .cl-top{gap:10px;padding:10px 16px}
  .cl-toolbar{padding:8px 16px}
  .cl-spacer{display:none}
}
@media(max-width:480px){
  .cl-tabs{width:100%}.cl-tabs button{flex:1;padding:8px 6px}
  .cl-select span{display:none}
  .cl-select select{max-width:150px}
  .cl-btn{padding:8px 10px}
}