:root{
  --bg:#0b1220;
  --card:#5E626B;
  --accent:#6ea8fe;
  --white:#ffffff;
  --muted:#cbd9ee;
  --brd:#1f2c4b;
  --shadow:0 10px 25px rgba(0,0,0,.35);
}

/* Wrapper */
.bto-wrap{max-width:980px;margin:28px auto;padding:20px;font-family:system-ui,Segoe UI,Roboto,Arial,sans-serif}
.bto-title{font-size:clamp(22px,3vw,34px);font-weight:800;margin:0 0 6px;color:var(--white)}
.bto-sub{margin:0 0 18px;color:var(--white)}

.bto-card{background:linear-gradient(180deg,var(--card),#0e1627);border:1px solid var(--brd);border-radius:14px;box-shadow:var(--shadow);overflow:hidden}
.bto-head{display:flex;flex-wrap:wrap;gap:8px;align-items:center;padding:14px 16px;border-bottom:1px solid rgba(255,255,255,0.04)}
.bto-pill{background:rgba(255,255,255,0.04);padding:6px 10px;border-radius:999px;border:1px solid rgba(255,255,255,0.03);color:var(--white);font-size:12px}

/* Question block */
.bto-quiz .bto-q{padding:16px 16px;border-bottom:1px solid rgba(255,255,255,0.03)}
.bto-quiz .bto-q h3{margin:0 0 10px;font-size:15px;color:var(--white)}
.bto-scale{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}
.bto-btn{appearance:none;border:1px solid rgba(255,255,255,0.05);background:rgba(255,255,255,0.02);color:var(--white);padding:10px 8px;border-radius:10px;cursor:pointer;font-weight:600}
.bto-btn[aria-pressed="true"]{outline:2px solid var(--accent);background:linear-gradient(180deg, rgba(110,168,254,0.12), rgba(33,83,200,0.06))}

/* Actions */
.bto-actions{display:flex;gap:10px;padding:14px 16px;flex-wrap:wrap}
.bto-btn.bto-primary{background:linear-gradient(90deg,#2a6cf7,#2153c8);color:var(--white);border:0;padding:12px 16px;border-radius:10px}
.bto-btn.bto-secondary{background:transparent;color:var(--white);border:1px solid rgba(255,255,255,0.06);padding:12px 16px;border-radius:10px}

/* Result */
.bto-result{padding:18px 16px;background:transparent;color:var(--white)}
.bto-bar{height:14px;background:rgba(255,255,255,0.03);border-radius:999px;overflow:hidden;border:1px solid rgba(255,255,255,0.02)}
.bto-bar > span{display:block;height:100%;width:0;transition:width .6s ease;background:linear-gradient(90deg,#22c55e,#eab308,#ef4444)}
.bto-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
.bto-note{color:var(--white);margin:8px 0}

/* Metrics */
.bto-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.bto-metric{background:rgba(255,255,255,0.03);padding:12px;border-radius:10px;border:1px solid rgba(255,255,255,0.03)}
.bto-metric h4{margin:0 0 6px;color:var(--white);font-size:14px}
.bto-val{font-size:20px;font-weight:800;color:var(--white);margin-bottom:6px}
.bto-desc{margin:0;color:var(--white);opacity:0.95;font-size:13px}

/* Footer link */
.bto-foot{color:var(--white);font-size:13px;margin-top:12px}
.bto-foot a{color:var(--accent);text-decoration:none}

/* Mobile adjustments */
@media(max-width:700px){
  .bto-grid{grid-template-columns:1fr}
  .bto-scale{grid-template-columns:repeat(2,1fr);gap:8px}
  .bto-btn{padding:12px 6px;font-size:13px}
  .bto-actions{flex-direction:column}
  .bto-btn.bto-primary, .bto-btn.bto-secondary{width:100%}
}

/* Accessibility focus */
.bto-btn:focus{outline:3px solid rgba(110,168,254,0.18);outline-offset:2px}