:root{
  --bg:#1b1311; --bg2:#241a17; --card:#2a1f1b; --line:#3d2d27;
  --ink:#f4f0ea; --muted:#a99c92; --brand:#e85a28; --brand-ink:#fff;
  --maroon:#411615; --good:#3f8f5a; --bad:#b94a3c;
  --radius:12px;
}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);color:var(--ink);font-family:'IBM Plex Sans Arabic',system-ui,-apple-system,'Segoe UI',Tahoma,sans-serif;line-height:1.75;font-size:15px}
a{color:var(--brand)}
.muted{color:var(--muted)} .small{font-size:13px}
h2{font-size:17px;margin:0 0 12px;font-weight:700}

.topbar{display:flex;align-items:center;gap:16px;padding:12px 20px;border-bottom:1px solid var(--line);background:var(--bg2);position:sticky;top:0;z-index:5}
.brandmark{font-weight:700;letter-spacing:.06em;font-size:18px}
.brandmark span{color:var(--brand)}
.tabs{display:flex;gap:6px;margin-inline-start:12px;flex:1}
.tab{background:none;border:0;color:var(--muted);font:inherit;padding:8px 14px;border-radius:8px;cursor:pointer}
.tab.active{background:var(--maroon);color:var(--ink)}
.logout{font-size:13px;color:var(--muted);text-decoration:none}
.logout:hover{color:var(--ink)}

main{padding:20px;max-width:1400px;margin:0 auto}
.tabpane{display:none} .tabpane.active{display:block}
.layout{display:grid;grid-template-columns:minmax(300px,420px) 1fr;gap:20px;align-items:start}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.form label,.refine label,.login-card label{display:block;font-size:13px;color:var(--muted);margin:12px 0 4px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:10px}

select,input[type=text],input[type=password],textarea{
  width:100%;background:var(--bg);color:var(--ink);border:1px solid var(--line);border-radius:8px;
  padding:9px 10px;font:inherit
}
select:focus,input:focus,textarea:focus{outline:2px solid var(--brand);outline-offset:0;border-color:transparent}
textarea{resize:vertical}

.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{border:1px solid var(--line);background:var(--bg);color:var(--muted);border-radius:999px;padding:5px 14px;cursor:pointer;font-size:13px;user-select:none}
.chip.on{background:var(--maroon);color:var(--ink);border-color:var(--brand)}

.btn{background:var(--bg);color:var(--ink);border:1px solid var(--line);border-radius:8px;padding:9px 16px;font:inherit;cursor:pointer}
.btn:hover{border-color:var(--brand)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.primary{background:var(--brand);color:var(--brand-ink);border-color:var(--brand);font-weight:700}
.btn.primary:hover{filter:brightness(1.08)}
.btn.good{border-color:var(--good);color:#9fe0b5}
.btn.bad{border-color:var(--bad);color:#f0a79d}
.btn.ghost{background:none}
.btn.wide{width:100%;margin-top:16px;padding:12px}

.out-head{display:flex;justify-content:space-between;align-items:center;gap:10px}
.out-actions{display:flex;gap:8px}
.status{background:var(--maroon);border-radius:8px;padding:8px 12px;margin:6px 0;font-size:13px}
.status.err{background:#5a1f1a;color:#ffd9d3}
.output{min-height:260px;padding:6px 2px;overflow-wrap:anywhere}
.output h1,.output h2,.output h3,.output h4{margin:1.1em 0 .4em;line-height:1.4}
.output h1{font-size:20px}.output h2{font-size:18px}.output h3{font-size:16px;color:var(--brand)}
.output p{margin:.5em 0}
.output ul,.output ol{padding-inline-start:22px;margin:.4em 0}
.output hr{border:0;border-top:1px solid var(--line);margin:1.2em 0}
.output blockquote{margin:.6em 0;padding:.2em 12px;border-inline-start:3px solid var(--brand);color:var(--muted)}
.output pre{background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:12px;white-space:pre-wrap;overflow-wrap:anywhere;font-family:inherit;margin:.6em 0}
.output code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.92em}
.output table{border-collapse:collapse;width:100%;display:block;overflow-x:auto;margin:.6em 0;font-size:14px}
.output th,.output td{border:1px solid var(--line);padding:6px 10px;text-align:start;vertical-align:top}
.output th{background:var(--maroon)}
.cursor::after{content:'▍';color:var(--brand);animation:blink 1s steps(2) infinite}
@keyframes blink{50%{opacity:0}}
.usage{font-size:12px;color:var(--muted);margin-top:6px}

.refine,.feedback{border-top:1px solid var(--line);margin-top:18px;padding-top:12px}
.refine-row{display:flex;gap:8px}
.fb-title{font-size:13px;color:var(--muted);margin-bottom:6px}
.fb-btns{display:flex;gap:8px;margin-top:8px;flex-wrap:wrap}
#fb-msg{margin-top:6px;font-size:13px}

.files-layout{grid-template-columns:minmax(240px,320px) 1fr}
.filelist{list-style:none;margin:0;padding:0;display:grid;gap:4px}
.filelist button{width:100%;text-align:start;background:none;border:1px solid transparent;color:var(--ink);padding:6px 10px;border-radius:8px;cursor:pointer;font:inherit;font-size:13px;direction:ltr}
.filelist button:hover{border-color:var(--line)}
.filelist button.active{background:var(--maroon);border-color:var(--brand)}
.editor textarea{min-height:60vh;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13px;line-height:1.7}

.login-body{display:grid;place-items:center;min-height:100vh;padding:20px}
.login-card{width:100%;max-width:380px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.login-logo{font-weight:700;font-size:22px;letter-spacing:.06em;margin-bottom:4px}
.login-logo span{color:var(--brand)}
.login-card .btn{width:100%;margin-top:18px;padding:11px}
.alert{background:#5a1f1a;color:#ffd9d3;border-radius:8px;padding:8px 12px;margin:10px 0;font-size:14px}

@media (max-width:900px){
  .layout,.files-layout{grid-template-columns:1fr}
  main{padding:14px}
  .topbar{padding:10px 14px;flex-wrap:wrap}
}