:root{
  --bg:#0b0f14;--panel:#121821;--text:#e6eef8;--muted:#93a4b6;--accent:#4f8cff;--border:#213042;--ok:#29cc7a;--warn:#f2b01e;--bad:#ff5a5f;--mono:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif;background:var(--bg);color:var(--text)}
.site-header{padding:32px 20px;text-align:center}
.header-content{display:flex;align-items:center;justify-content:space-between;max-width:960px;margin:0 auto}
.site-header h1{margin:0;font-size:28px;font-weight:700;flex:1}
.lang-switcher{display:flex;align-items:center;gap:8px}
.lang-switcher select{background:#0d141d;color:#e6eef8;border:1px solid var(--border);border-radius:6px;padding:6px 8px;font-size:14px;min-width:120px}
.subtitle{margin:0;color:var(--muted)}
.container{max-width:960px;margin:0 auto;padding:0 20px 40px}
.panel{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:16px 16px 8px;margin-bottom:16px}
.result-row{display:flex;align-items:center;justify-content:space-between;gap:12px}
.result-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.output{display:block;width:100%;padding:14px 12px;border:1px solid var(--border);border-radius:8px;background:#0d141d;font-family:var(--mono);font-size:18px;letter-spacing:.4px;word-break:break-all}
.meters{display:flex;gap:16px;margin-top:8px;flex-wrap:wrap}
.meter{display:flex;align-items:center;gap:8px}
.meter-label{color:var(--muted)}
.muted{color:var(--muted)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
.field{display:flex;flex-direction:column;gap:8px}
.help{margin:0;color:var(--muted);font-size:12px}
.mono{font-family:var(--mono)}

.btn{background:#1a2431;color:#e6eef8;border:1px solid var(--border);border-radius:8px;padding:10px 14px;cursor:pointer}
.btn:hover{background:#223041}
.btn.primary{background:var(--accent);border-color:#3e6ed1;color:#fff}
.btn.primary:hover{filter:brightness(1.05)}
.switch{display:flex;align-items:center;gap:6px}

input[type="range"]{width:100%}
input,select,textarea{background:#0d141d;color:#e6eef8;border:1px solid var(--border);border-radius:8px;padding:10px}
textarea{width:100%;resize:vertical}

progress{width:120px;height:16px;-webkit-appearance:none;appearance:none}
progress::-webkit-progress-bar{background:#0d141d;border:1px solid var(--border);border-radius:6px}
progress::-webkit-progress-value{background:linear-gradient(90deg,var(--bad),var(--warn),var(--ok));border-radius:6px}

.site-footer{padding:16px 20px;text-align:center;color:var(--muted)}
.copyright{margin:8px 0 0 0;font-size:14px;color:var(--muted)}

@media (max-width:640px){
  .result-row{flex-direction:column;align-items:flex-start}
  .header-content{flex-direction:column;gap:16px;text-align:center}
  .lang-switcher{justify-content:center}
}