:root{
  --bg:#0b0d12; --card:#121626; --border:rgba(255,255,255,.08);
  --text:rgba(255,255,255,.92); --muted:rgba(255,255,255,.65);
  --shadow:0 10px 30px rgba(0,0,0,.35); --danger:#ff6b6b;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);
  font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial}
a{color:inherit;text-decoration:none}
code{background:rgba(255,255,255,.06);padding:.1rem .3rem;border-radius:.4rem;border:1px solid var(--border)}
.container{max-width:1100px;margin:0 auto;padding:22px}
.header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}
h1{margin:0 0 6px;font-size:26px}
h2{margin:0 0 6px;font-size:16px}
p{margin:8px 0}
.muted{color:var(--muted)}
.error{color:var(--danger)}
.row{display:flex;gap:10px;align-items:center;margin-top:10px}
.row.space{justify-content:space-between}
.btn{background:rgba(255,255,255,.10);border:1px solid var(--border);color:var(--text);
  padding:10px 12px;border-radius:12px;cursor:pointer}
.btn:hover{background:rgba(255,255,255,.14)}
.btn.ghost{background:transparent}
.panel{margin-top:16px;background:var(--card);border:1px solid var(--border);border-radius:16px;
  padding:16px;box-shadow:var(--shadow)}
.stack{display:flex;flex-direction:column;gap:12px;margin-top:12px}
.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:14px;
  box-shadow:var(--shadow);display:flex;flex-direction:column;gap:10px}
.cardActions{display:flex;gap:10px;flex-wrap:wrap}
details{background:rgba(0,0,0,.15);border:1px solid var(--border);border-radius:12px;padding:10px}
summary{cursor:pointer}
input,select,textarea{background:rgba(0,0,0,.25);border:1px solid var(--border);color:var(--text);
  border-radius:12px;padding:10px 12px;outline:none}
textarea{min-height:90px}
pre{margin:0;font:inherit}
.resultBlock{margin-top:10px;padding:12px;border:1px solid var(--border);border-radius:12px;background:rgba(0,0,0,.25);white-space:pre-wrap;word-break:break-word;overflow-wrap:anywhere}
.dangerText{color:var(--danger)}
.linkText{color:var(--muted);cursor:pointer;text-decoration:underline;text-underline-offset:3px}
.linkText:hover{color:var(--text)}