/* Code Studio — IDE layout (dark, independent of site theme) */
.cs-wrap{--bg:#0f1420;--bg2:#161c2b;--bg3:#1d2536;--line:#2a3348;--tx:#e6eaf3;--mut:#8b95ab;--ac:#4f8cff;
  background:var(--bg);color:var(--tx);border-top:1px solid var(--line);display:flex;flex-direction:column;height:calc(100vh - 64px);min-height:520px;font:14px/1.4 Inter,system-ui,sans-serif}
.cs-wrap[hidden],.cs-gate[hidden]{display:none}
.cs-bar{display:flex;gap:8px;align-items:center;padding:8px 12px;background:var(--bg2);border-bottom:1px solid var(--line);flex-wrap:wrap}
.cs-bar .sp{flex:1}
.cs-wrap button,.cs-wrap select,.cs-wrap input[type=text]{font:inherit;color:var(--tx);background:var(--bg3);border:1px solid var(--line);border-radius:8px;padding:6px 11px;cursor:pointer}
.cs-wrap button:hover{border-color:var(--ac)}
.cs-wrap button.pri{background:var(--ac);border-color:var(--ac);color:#fff;font-weight:600}
.cs-wrap button.ok{background:#16a34a;border-color:#16a34a;color:#fff;font-weight:600}
.cs-auto{display:flex;gap:6px;align-items:center;color:var(--mut);font-size:.85rem}
.cs-mtabs{display:none}
.cs-main{flex:1;display:grid;grid-template-columns:230px minmax(0,1fr) minmax(0,.9fr);min-height:0}
.cs-side,.cs-edit,.cs-prev{min-height:0;min-width:0;display:flex;flex-direction:column;border-right:1px solid var(--line)}
.cs-prev{border-right:0}
.cs-h{display:flex;align-items:center;justify-content:space-between;padding:8px 10px;background:var(--bg2);border-bottom:1px solid var(--line);color:var(--mut);font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;gap:6px}
.cs-h button{padding:3px 8px;font-size:.8rem;text-transform:none;letter-spacing:0}
#csTree{overflow:auto;flex:1;padding:6px 0}
.cs-row{display:flex;align-items:center;gap:6px;padding:4px 8px;cursor:pointer;white-space:nowrap;color:#c9d1e3}
.cs-row:hover{background:var(--bg3)}
.cs-row.act{background:#25324d;color:#fff}
.cs-row .nm{flex:1;overflow:hidden;text-overflow:ellipsis}
.cs-row .ac{display:none;gap:2px}
.cs-row:hover .ac,.cs-row.act .ac{display:flex}
.cs-row .ac span{padding:0 4px;opacity:.7}.cs-row .ac span:hover{opacity:1}
#csOpen{display:flex;overflow-x:auto;background:var(--bg2);border-bottom:1px solid var(--line);min-height:36px}
.cs-tab{display:flex;gap:8px;align-items:center;padding:8px 12px;border-right:1px solid var(--line);color:var(--mut);cursor:pointer;white-space:nowrap}
.cs-tab.act{background:var(--bg);color:#fff;box-shadow:inset 0 -2px var(--ac)}
.cs-tab i{font-style:normal;opacity:.6}.cs-tab i:hover{opacity:1}
#csEd{flex:1;min-height:0;position:relative}
#csEd .CodeMirror{position:absolute;inset:0;height:100%;font:13.5px/1.55 'JetBrains Mono',Menlo,Consolas,monospace}
#csEd textarea.cs-ta{position:absolute;inset:0;width:100%;height:100%;border:0;border-radius:0;background:#12161f;color:#e6eaf3;padding:12px;resize:none;tab-size:2;font:13.5px/1.55 Menlo,Consolas,monospace;outline:0;white-space:pre}
.cs-empty{position:absolute;inset:0;display:grid;place-items:center;color:var(--mut);text-align:center;padding:20px}
.cs-empty[hidden]{display:none}
#csBin img{max-width:80%;max-height:70vh;background:repeating-conic-gradient(#222 0 25%,#2a2a2a 0 50%) 0 0/16px 16px;border-radius:8px}
.cs-stat{display:flex;justify-content:space-between;padding:4px 12px;background:var(--bg2);border-top:1px solid var(--line);color:var(--mut);font-size:.78rem}
#csFrame{flex:1;width:100%;border:0;background:#fff;min-height:0}
#csCon{height:150px;overflow:auto;background:#0a0e17;border-top:1px solid var(--line);font:12.5px/1.5 Menlo,Consolas,monospace;padding:6px 10px}
#csCon[hidden]{display:none}
#csCon div{white-space:pre-wrap;word-break:break-word;border-bottom:1px solid #151b29;padding:2px 0}
#csCon .error{color:#ff7b72}#csCon .warn{color:#e3b341}#csCon .info{color:#79c0ff}
.cs-gate{max-width:480px;margin:70px auto;padding:32px;text-align:center;background:#fff;border:1px solid var(--line,#e4e9f1);border-radius:18px;box-shadow:0 12px 40px rgba(15,23,42,.08)}
.cs-gate h2{margin:8px 0}.cs-gate .btn-row{display:flex;gap:10px;justify-content:center;margin-top:18px;flex-wrap:wrap}
dialog.cs-dlg{border:1px solid #2a3348;border-radius:14px;background:#161c2b;color:#e6eaf3;padding:20px;width:min(380px,92vw)}
dialog.cs-dlg::backdrop{background:rgba(0,0,0,.55)}
.cs-dlg h3{margin:0 0 12px;font-size:1.05rem}.cs-dlg input,.cs-dlg select{width:100%;margin-bottom:10px;box-sizing:border-box;font:inherit;color:#e6eaf3;background:#1d2536;border:1px solid #2a3348;border-radius:8px;padding:9px 11px}
.cs-dlg .row{display:flex;gap:8px;justify-content:flex-end;margin-top:6px}
.cs-dlg button{font:inherit;color:#e6eaf3;background:#1d2536;border:1px solid #2a3348;border-radius:8px;padding:7px 14px;cursor:pointer}
.cs-dlg button[value=ok]{background:#4f8cff;border-color:#4f8cff;color:#fff;font-weight:600}
.cs-about{max-width:860px;margin:44px auto;padding:0 20px}.cs-about h2{margin:26px 0 8px}.cs-about p,.cs-about li{color:#4a566b;line-height:1.75}
@media(max-width:900px){
 .cs-wrap{height:calc(100vh - 64px)}
 .cs-main{grid-template-columns:1fr}
 .cs-mtabs{display:flex;background:var(--bg2);border-bottom:1px solid var(--line)}
 .cs-mtabs button{flex:1;border:0;border-radius:0;background:none;padding:10px;color:var(--mut)}
 .cs-mtabs button.on{color:#fff;box-shadow:inset 0 -2px var(--ac)}
 .cs-side,.cs-edit,.cs-prev{display:none;border-right:0}
 .cs-main[data-v=files] .cs-side,.cs-main[data-v=code] .cs-edit,.cs-main[data-v=preview] .cs-prev{display:flex}
 .cs-row .ac{display:flex}
}
#csEd textarea.cs-ta{background:#12161f!important;color:#e6eaf3!important;border:0!important;border-radius:0!important;box-shadow:none!important;margin:0!important}
.cs-wrap .cs-h button{padding:3px 7px;font-size:.74rem}
.cs-side .cs-h{flex-wrap:wrap}
.cs-wrap input[type=checkbox]{accent-color:#4f8cff}