:root{
  --bg:#0e1116; --bg-2:#111520; --card:#141a26;
  --line:rgba(255,255,255,.08);
  --text:#eef3fb; --muted:#a8b3c6;
  --accent:#3b82f6; --accent-2:#7dd3fc; --accent-3:#93e0b9; --accent-4:#8b5cf6;
  --radius:18px; --shadow:0 12px 30px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.04);
  --surface-input:#0f1422;
  --glass:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
}
html[data-theme="light"]{
  --bg:#f7f9fc; --bg-2:#ffffff; --card:#ffffff;
  --line:rgba(0,0,0,.08);
  --text:#0e1116; --muted:#5b6473;
  --accent:#3b82f6; --accent-2:#38bdf8; --accent-3:#22c55e; --accent-4:#8b5cf6;
  --surface-input:#f3f5f9;
  --glass:linear-gradient(180deg, rgba(59,130,246,.08), rgba(59,130,246,.04));
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0; padding:28px; color:var(--text);
  background:
    radial-gradient(900px 600px at 10% -10%, rgba(80,130,255,.10), transparent 60%),
    radial-gradient(900px 600px at 110% 10%, rgba(56,189,248,.10), transparent 60%),
    linear-gradient(180deg, var(--bg), var(--bg));
  font:14px/1.6 ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
}
html[data-theme="light"] body{
  background:
    radial-gradient(900px 600px at 15% -10%, rgba(79,140,255,.08), transparent 60%),
    radial-gradient(900px 600px at 110% 0%, rgba(56,189,248,.08), transparent 60%),
    linear-gradient(180deg, var(--bg), var(--bg));
}
.container{max-width:1200px;margin:0 auto}
nav{display:flex;gap:10px;align-items:center;margin-bottom:16px;flex-wrap:wrap}
.brand{font-weight:900;letter-spacing:.2px}
nav a{
  text-decoration:none;color:var(--text);padding:10px 14px;border-radius:12px;border:1px solid var(--line);
  background:var(--glass); backdrop-filter: blur(6px);
}
nav a.active{outline:2px solid rgba(255,255,255,.18)}
.controls{margin-left:auto;display:flex;gap:8px;align-items:center}
select.toggle{
  background:var(--surface-input);color:var(--text);border:1px solid var(--line);border-radius:12px;padding:8px 10px
}
.hero{position:relative;overflow:hidden;margin:12px 0 22px;padding:34px;border-radius:24px;border:1px solid var(--line);
  background:linear-gradient(180deg,var(--card),var(--bg-2)); box-shadow:var(--shadow)}
.hero h1{font-size:40px;line-height:1.15;margin:0 0 10px}
.hero p{margin:0 0 18px;color:var(--muted);max-width:850px}
.hero .ctas{display:flex;gap:12px;flex-wrap:wrap}
.btn{
  appearance:none;border:0;padding:12px 16px;border-radius:14px;font-weight:900;letter-spacing:.2px;cursor:pointer;
  color:#0a0c18;background:var(--accent);box-shadow:0 8px 20px rgba(0,0,0,.35);
}
.btn.secondary{background:rgba(255,255,255,.1);color:var(--text);border:1px solid var(--line)}
.hero .stats{display:flex;gap:18px;flex-wrap:wrap;margin-top:12px}
.stat{display:flex;align-items:center;gap:10px;padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:var(--glass)}
.stat .num{font-weight:900}
.grid{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:900px){.grid{grid-template-columns:1fr 1fr 1fr}}
.card{
  background:linear-gradient(180deg,var(--card),var(--bg-2));
  border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden
}
.card .head{display:flex;gap:10px;align-items:center;padding:16px;border-bottom:1px solid var(--line)}
.badge{margin-left:auto;font-size:11px;color:var(--muted);background:rgba(255,255,255,.06);
  padding:6px 10px;border-radius:999px;border:1px solid var(--line)}
.dot{width:10px;height:10px;border-radius:999px;box-shadow:0 0 16px currentColor}
.enc .dot{color:var(--accent-2)} .pretty .dot{color:var(--accent-4)} .text .dot{color:var(--accent)}
.card .body{padding:14px;display:grid;gap:12px}
.io{display:grid;gap:10px;grid-template-columns:1fr}
@media(min-width:900px){.io.two{grid-template-columns:1fr 1fr}}
.field{display:grid;gap:8px}
label{font-weight:800;font-size:12px;letter-spacing:.2px;text-transform:uppercase;color:#a8c9ff}
html[data-theme="light"] label{color:#3156a4}
textarea, input[type="text"]{
  width:100%;min-height:220px;resize:vertical;padding:12px 14px;border-radius:14px;border:1px solid var(--line);
  background:var(--surface-input);color:var(--text);
  font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;
}
textarea:focus{border-color:rgba(100,150,255,.38);box-shadow:0 0 0 3px rgba(100,150,255,.15)}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
select{background:var(--surface-input);color:var(--text);border:1px solid var(--line);border-radius:10px;padding:8px 10px}
.btn.ghost{background:rgba(255,255,255,.10);color:var(--text);border:1px solid var(--line)}
.btn.dim{background:#b7c8e6;color:#0a0c18}
.hint{color:var(--muted);font-size:12px}
footer.small{margin-top:14px;color:var(--muted);font-size:12px}
.toast{position:fixed;right:20px;bottom:20px;background:var(--card);color:var(--text);border:1px solid var(--line);
  border-radius:12px;padding:10px 12px;box-shadow:var(--shadow);opacity:0;transform:translateY(10px);
  transition:opacity .25s ease, transform .25s ease;pointer-events:none}
.toast.show{opacity:1;transform:translateY(0)}