/* Vocal Range Test 1.0.0 | onlinepitchchanger.com | guided singing test: step tracker, a dark tuner-style meter (note, Hz, cents needle, hold bar, level, C2–C6 range strip), result card.
   Brand: #0067FF primary, #22B8F0 accent, #0F172A navy. Sizes in px (themes shrink rem); text >= 15px, labels >= 13px; contrast >= 4.5:1. */
.opc-vrt{--v-blue:#0067ff;--v-blue2:#0052cc;--v-cyan:#22b8f0;--v-navy:#0f172a;--v-navy2:#1e293b;--v-text:#334155;--v-muted:#475569;--v-light:#f0f7ff;--v-line:#d6e4f5;--v-ok:#15803d;
	max-width:800px;margin:0 auto 1.75em;color:var(--v-text);font:16px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;box-sizing:border-box;text-align:left}
.opc-vrt *,.opc-vrt *::before,.opc-vrt *::after{box-sizing:border-box}
.opc-vrt [hidden]{display:none!important}
section.opc-vrt.opc-vrt{max-width:800px;margin-left:auto;margin-right:auto}
.opc-vrt p,.opc-vrt h2,.opc-vrt h3,.opc-vrt h4,.opc-vrt ol,.opc-vrt ul{margin:0}
.opc-vrt ol,.opc-vrt ul{padding:0;list-style:none}
.opc-vrt :where(button,input){font:inherit;letter-spacing:normal;text-transform:none;box-shadow:none;margin:0}
.opc-vrt button{cursor:pointer;line-height:1.2}
.opc-vrt button:disabled{cursor:not-allowed}
.opc-vrt :focus-visible{outline:3px solid var(--v-blue);outline-offset:2px}
.opc-vrt-head{margin:0 0 12px}
.opc-vrt-title{margin:0;font-size:24px;line-height:1.25;font-weight:800;color:var(--v-navy);letter-spacing:-.01em}
.opc-vrt-lead{margin:4px 0 0;color:var(--v-muted);font-size:16px}

/* ---------- step tracker ---------- */
.opc-vrt-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:0 0 10px!important}
.opc-vrt-steps li{display:flex;align-items:center;gap:8px;min-width:0;padding:8px 10px;border:2px solid var(--v-line);border-radius:12px;background:#fff}
.opc-vrt-n{flex:none;display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--v-line);color:var(--v-navy);font-weight:800;font-size:15px}
.opc-vrt-stxt{display:flex;flex-direction:column;min-width:0;line-height:1.25}
.opc-vrt-stxt b{font-size:13px;color:var(--v-muted);font-weight:700}
.opc-vrt-stxt output{font-size:17px;font-weight:800;color:var(--v-navy);overflow-wrap:anywhere}
.opc-vrt-steps li.is-cur{border-color:var(--v-blue);background:var(--v-light)}
.opc-vrt-steps li.is-cur .opc-vrt-n{background:var(--v-blue);color:#fff}
.opc-vrt-steps li.is-done .opc-vrt-n{background:var(--v-ok);color:#fff}

/* ---------- the meter (tuner look) ---------- */
.opc-vrt-meter{border-radius:20px;background:linear-gradient(180deg,#1e293b 0,#0f172a 70px);color:#e2e8f0;padding:14px;box-shadow:0 0 0 1px #334155 inset,0 10px 24px rgba(15,23,42,.18)}
.opc-vrt .opc-vrt-meter :focus-visible{outline-color:var(--v-cyan)}
.opc-vrt-prompt{font-size:16px;line-height:1.5;color:#e2e8f0;margin:0!important}
.opc-vrt-prompt strong{color:#fff}
.opc-vrt-prompt em{color:var(--v-cyan);font-style:normal;font-weight:700}
.opc-vrt-display{display:grid;grid-template-columns:minmax(150px,210px) 1fr;gap:14px;align-items:stretch}
.opc-vrt-notebox{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:10px;border-radius:14px;background:#020617;box-shadow:0 0 0 1px #334155 inset;text-align:center}
.opc-vrt-lbl{display:block;font-size:13px;font-weight:700;color:#cbd5e1;letter-spacing:.01em}
.opc-vrt-note{display:block;font-size:56px;line-height:1.05;font-weight:800;color:var(--v-cyan);font-variant-numeric:tabular-nums;margin:4px 0 2px}
.opc-vrt.is-steady .opc-vrt-note{color:#4ade80}
.opc-vrt-hz{font-size:16px;color:#e2e8f0;font-variant-numeric:tabular-nums}
.opc-vrt-gauges{display:flex;flex-direction:column;gap:10px;justify-content:center;min-width:0}
.opc-vrt-gauge .opc-vrt-lbl output{color:#fff;font-weight:800}
.opc-vrt-scale{position:relative;height:18px;margin-top:5px;border-radius:9px;background:linear-gradient(90deg,#334155,#1e293b 40%,#14532d 50%,#1e293b 60%,#334155)}
.opc-vrt-mid{position:absolute;left:50%;top:0;bottom:0;width:2px;margin-left:-1px;background:#94a3b8}
.opc-vrt-needle{position:absolute;left:50%;top:-3px;bottom:-3px;width:6px;margin-left:-3px;border-radius:3px;background:var(--v-cyan);transition:left .09s linear}
.opc-vrt.is-steady .opc-vrt-needle{background:#4ade80}
.opc-vrt-ticks{display:flex;justify-content:space-between;font-size:13px;color:#cbd5e1;margin-top:2px}
.opc-vrt-bar{height:12px;margin-top:5px;border-radius:6px;background:#334155;overflow:hidden}
.opc-vrt-bar span{display:block;height:100%;width:0;border-radius:6px;background:var(--v-cyan);transition:width .08s linear}
.opc-vrt.is-steady .opc-vrt-bar:not(.opc-vrt-lvl) span{background:#4ade80}
.opc-vrt-lvl span{background:#94a3b8}
.opc-vrt-strip{margin:12px 0 0}
.opc-vrt-strip canvas{display:block;width:100%;height:56px;border-radius:8px;background:#f8fafc}
.opc-vrt-octs{display:flex;justify-content:space-between;font-size:13px;color:#cbd5e1;margin-top:3px}
.opc-vrt-status{margin:10px 0 12px!important;padding:10px 12px;border-radius:12px;background:#1e293b;color:#e2e8f0;font-size:15px;line-height:1.45;border-left:5px solid #64748b}
.opc-vrt-status[data-kind=listen],.opc-vrt-status[data-kind=busy]{border-left-color:var(--v-cyan)}
.opc-vrt-status[data-kind=ok]{border-left-color:#4ade80}
.opc-vrt-status[data-kind=warn]{border-left-color:#fbbf24;background:#422006;color:#fef3c7}
.opc-vrt-status[data-kind=error]{border-left-color:#f87171;background:#450a0a;color:#fee2e2}
.opc-vrt-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}
.opc-vrt .opc-vrt-go,.opc-vrt .opc-vrt-next{flex:1 1 220px;min-height:52px;padding:10px 18px;border:0;border-radius:14px;background:var(--v-blue);color:#fff;font-size:17px;font-weight:800}
.opc-vrt .opc-vrt-go:hover,.opc-vrt .opc-vrt-next:hover:not(:disabled){background:var(--v-blue2);color:#fff}
.opc-vrt .opc-vrt-next:disabled{background:#334155;color:#cbd5e1}
.opc-vrt .opc-vrt-stop{flex:0 1 auto;min-height:52px;min-width:88px;padding:10px 18px;border:2px solid #94a3b8;border-radius:14px;background:transparent;color:#fff;font-size:16px;font-weight:700}
.opc-vrt .opc-vrt-stop:hover{border-color:#fff;background:#1e293b;color:#fff}
.opc-vrt .opc-vrt-go:disabled{opacity:.7}

/* ---------- result ---------- */
.opc-vrt-result{margin-top:14px;padding:16px;border:2px solid var(--v-blue);border-radius:18px;background:#fff}
.opc-vrt-result:focus{outline:none}
.opc-vrt-rh{font-size:15px!important;font-weight:700;color:var(--v-muted);margin:0!important;text-transform:none;letter-spacing:.01em}
.opc-vrt-range{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 14px;margin:2px 0 12px!important}
.opc-vrt-range strong{font-size:40px;line-height:1.1;font-weight:800;color:var(--v-navy)}
.opc-vrt-range span{font-size:17px;font-weight:700;color:var(--v-blue2)}
.opc-vrt-ends{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:14px}
.opc-vrt-end{display:flex;flex-direction:column;gap:2px;padding:10px 12px;border-radius:12px;background:var(--v-light);border:1px solid var(--v-line)}
.opc-vrt-end .opc-vrt-lbl{color:var(--v-muted)}
.opc-vrt-end b{font-size:26px;line-height:1.15;color:var(--v-navy)}
.opc-vrt-end > span:not(.opc-vrt-lbl){font-size:15px;color:var(--v-text)}
.opc-vrt .opc-vrt-play{align-self:flex-start;margin-top:6px;min-height:44px;padding:6px 14px;border:2px solid var(--v-blue);border-radius:10px;background:#fff;color:var(--v-blue2);font-size:15px;font-weight:700}
.opc-vrt .opc-vrt-play:hover{background:var(--v-blue);color:#fff}
.opc-vrt-sub{font-size:18px!important;font-weight:800;color:var(--v-navy);margin:14px 0 4px!important}
.opc-vrt-fit{font-size:16px;color:var(--v-text);margin:0 0 8px!important}
.opc-vrt-types{display:grid;gap:6px;margin-bottom:6px!important}
.opc-vrt-types li{display:grid;grid-template-columns:minmax(118px,150px) 78px 1fr auto;align-items:center;gap:10px;padding:6px 10px;border-radius:10px;background:#f8fafc;font-size:15px}
.opc-vrt-types li.is-best{background:#ecfdf5;box-shadow:0 0 0 2px #86efac inset}
.opc-vrt-types a{display:inline-flex;align-items:center;min-height:44px;font-weight:700;color:var(--v-blue2);text-decoration:underline;text-underline-offset:3px}
.opc-vrt-tr{color:var(--v-muted);font-variant-numeric:tabular-nums}
.opc-vrt-tbar{height:10px;border-radius:5px;background:#e2e8f0;overflow:hidden;min-width:40px}
.opc-vrt-tbar span{display:block;height:100%;background:var(--v-blue);border-radius:5px}
.opc-vrt-types li.is-best .opc-vrt-tbar span{background:var(--v-ok)}
.opc-vrt-types b{color:var(--v-navy);white-space:nowrap}
.opc-vrt-hint{display:block;font-size:15px;color:var(--v-muted);line-height:1.45;margin:4px 0 0!important}
.opc-vrt-hint a{color:var(--v-blue2);text-decoration:underline;text-underline-offset:3px;font-weight:600}
.opc-vrt-keys{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:4px 0 6px!important}
.opc-vrt-keys li{display:flex;flex-direction:column;align-items:center;padding:10px 8px;border-radius:12px;background:var(--v-navy);color:#e2e8f0;text-align:center}
.opc-vrt-keys b{font-size:26px;line-height:1.15;color:var(--v-cyan)}
.opc-vrt-keys span{font-size:14px;color:#e2e8f0}
.opc-vrt .opc-vrt-again{margin-top:14px;min-height:48px;padding:8px 20px;border:0;border-radius:12px;background:var(--v-blue);color:#fff;font-size:16px;font-weight:800}
.opc-vrt .opc-vrt-again:hover{background:var(--v-blue2);color:#fff}

/* ---------- More options ---------- */
.opc-vrt-more{margin-top:12px;border:1px solid var(--v-line);border-radius:14px;background:#fff}
.opc-vrt-more summary{display:flex;flex-wrap:wrap;align-items:center;gap:4px 10px;min-height:48px;padding:10px 14px;cursor:pointer;font-weight:800;color:var(--v-navy);font-size:16px;list-style:none}
.opc-vrt-more summary::-webkit-details-marker{display:none}
.opc-vrt-more summary::before{content:"+";display:grid;place-items:center;width:24px;height:24px;border-radius:50%;background:var(--v-light);color:var(--v-blue2);font-weight:800}
.opc-vrt-more[open] summary::before{content:"−"}
.opc-vrt-more summary span{font-weight:500;color:var(--v-muted);font-size:15px}
.opc-vrt-moregrid{display:grid;grid-template-columns:1fr 1fr;gap:16px;padding:4px 14px 16px}
.opc-vrt-moregrid > div{min-width:0}
.opc-vrt-wide{grid-column:1/-1}
.opc-vrt-label{display:block;font-weight:700;color:var(--v-navy);font-size:15px;margin-bottom:6px}
.opc-vrt-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.opc-vrt .opc-vrt-btn2{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:6px 14px;border:2px solid var(--v-blue);border-radius:10px;background:#fff;color:var(--v-blue2);font-size:15px;font-weight:700;cursor:pointer}
.opc-vrt .opc-vrt-btn2:hover:not(:disabled){background:var(--v-blue);color:#fff}
.opc-vrt .opc-vrt-btn2:disabled{border-color:#cbd5e1;color:#64748b;background:#f8fafc}
.opc-vrt .opc-vrt-a4{width:96px;min-height:44px;padding:6px 10px;border:1px solid #94a3b8;border-radius:10px;font-size:16px;color:var(--v-navy);background:#fff}
.opc-vrt-file{position:absolute;width:1px;height:1px;opacity:0;overflow:hidden;clip:rect(0 0 0 0)}
.opc-vrt-file:focus-visible + .opc-vrt-open{outline:3px solid var(--v-blue);outline-offset:2px}
.opc-vrt-picked{font-weight:800;color:var(--v-navy);font-size:16px;min-width:140px}
.opc-vrt-piano{--wk:44px;--bk:30px;overflow:auto;margin:8px 0;padding-bottom:4px;border-radius:10px}
.opc-vrt-keysrow{position:relative;display:flex;width:max-content;height:140px}
.opc-vrt .opc-vrt-wk{flex:none;width:var(--wk);height:140px;padding:0 0 8px;border:1px solid #94a3b8;border-radius:0 0 8px 8px;background:#fff;color:var(--v-muted);font-size:13px;font-weight:700;display:flex;align-items:flex-end;justify-content:center}
.opc-vrt .opc-vrt-bk{position:absolute;top:0;z-index:1;width:var(--bk);height:86px;padding:0;border:0;border-radius:0 0 6px 6px;background:var(--v-navy2)}
.opc-vrt .opc-vrt-wk:hover{background:var(--v-light)}
.opc-vrt .opc-vrt-bk:hover{background:#334155}
.opc-vrt .opc-vrt-wk[aria-pressed=true]{background:var(--v-cyan);color:var(--v-navy)}
.opc-vrt .opc-vrt-bk[aria-pressed=true]{background:var(--v-blue)}

@media (max-width:620px){
	.opc-vrt-title{font-size:22px}
	.opc-vrt-steps{gap:6px}
	.opc-vrt-steps li{flex-direction:column;align-items:flex-start;gap:4px;padding:8px}
	.opc-vrt-display{grid-template-columns:1fr}
	.opc-vrt-notebox{flex-direction:row;flex-wrap:wrap;gap:4px 14px;padding:8px 12px}
	.opc-vrt-notebox .opc-vrt-lbl{flex-basis:100%}
	.opc-vrt-note{font-size:48px;margin:0}
	.opc-vrt-meter{padding:12px}
	.opc-vrt-range strong{font-size:34px}
	.opc-vrt-types li{grid-template-columns:1fr auto;gap:2px 10px}
	.opc-vrt-tbar{grid-column:1/-1;order:3}
	.opc-vrt-tr{text-align:right}
	.opc-vrt-types b{grid-column:1/-1;order:4;font-size:14px}
	.opc-vrt-keys b{font-size:22px}
	.opc-vrt-moregrid{grid-template-columns:1fr}
}