:root{
  --bg:#0b1020; --panel:#0f1630; --ink:#eaf0ff; --muted:#9fb1d1;
  --accent:#6aa9ff; --accent2:#79ffe1; --card:#121a3a; --ring:rgba(122,185,255,.4);
}
*{box-sizing:border-box}
body{margin:0;font:16px/1.45 system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial;color:var(--ink);
  background:radial-gradient(1200px 800px at 80% -10%,#183055,transparent 60%),radial-gradient(1200px 800px at -10% 0%,#10264a,transparent 60%),var(--bg);
  min-height:100svh}
header{padding:32px 20px 8px;text-align:center}
h1{margin:0 0 6px;font-size:clamp(22px,3vw,34px);letter-spacing:.2px}
.sub{color:var(--muted);font-size:14px}
.wrap{max-width:980px;margin:20px auto 60px;padding:0 16px}
.panel{background:var(--panel);border:1px solid rgba(255,255,255,.08);border-radius:16px;box-shadow:0 10px 30px rgba(0,0,0,.35);padding:18px}
.grid{display:grid;gap:14px}
.grid.two{grid-template-columns:1fr}
@media(min-width:980px){.grid.two{grid-template-columns:1.2fr .8fr}}
label{display:block;font-weight:600;margin-bottom:6px}
input[type=text],input[type=number],.select,textarea{
  width:100%;background:var(--card);color:var(--ink);
  border:1px solid rgba(255,255,255,.12);border-radius:12px;padding:12px 14px;outline:none;transition:.15s border-color,.15s box-shadow}
input:focus,textarea:focus,.select:focus{border-color:var(--accent);box-shadow:0 0 0 6px var(--ring)}
textarea{min-height:120px;resize:vertical}
.controls{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.ctrl{background:var(--card);border:1px solid rgba(255,255,255,.12);border-radius:12px;padding:10px}
.ctrl small{color:var(--muted);display:block;margin-top:6px}
.btns{display:flex;gap:10px;flex-wrap:wrap;margin-top:8px}
button{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#08111c;font-weight:700;border:none;border-radius:12px;padding:10px 14px;cursor:pointer;transition:transform .06s ease}
button:hover{transform:translateY(-1px)}
button.secondary{background:none;color:var(--ink);border:1px solid rgba(255,255,255,.18)}
.stats{color:var(--muted);font-size:14px;margin-top:8px}
.results{margin-top:14px}
.best{background:linear-gradient(180deg,rgba(122,185,255,.18),rgba(122,185,255,.08));border:1px solid rgba(119,208,255,.35);border-radius:14px;padding:14px;margin-bottom:14px}
.best h3{margin:0 0 4px}
table{width:100%;border-collapse:collapse;overflow:hidden;border-radius:12px}
th,td{text-align:left;padding:10px 12px}
thead th{background:rgba(255,255,255,.06);font-size:14px;color:var(--muted)}
tbody tr:nth-child(odd){background:rgba(255,255,255,.03)}
tbody tr:hover{background:rgba(255,255,255,.06)}
.small{font-size:13px;color:var(--muted)}
.footer{color:var(--muted);font-size:13px}
.fileline{display:flex;gap:8px;align-items:center;margin-top:8px;flex-wrap:wrap}