/* Online Autotune 1.0.0 | onlinepitchchanger.com | studio layout: 1 vocal + pitch graph (dark, instrument look) → 2 key → 3 retune speed → 4 download.
   Brand: #0067FF primary, #22B8F0 accent (corrected pitch), #0F172A navy; amber #FBBF24 = your pitch; red only for "recording". Text ≥ 15px, labels ≥ 13px, contrast ≥ 4.5:1. */
.opc-at{--a-blue:#0067ff;--a-blue2:#0052cc;--a-cyan:#22b8f0;--a-navy:#0f172a;--a-navy2:#1e293b;--a-text:#334155;--a-muted:#475569;--a-light:#f0f7ff;--a-line:#d6e4f5;--a-amber:#fbbf24;--a-rec:#b91c1c;
	max-width:1040px;margin:0 auto 1.75em;color:var(--a-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-at *,.opc-at *::before,.opc-at *::after{box-sizing:border-box}
.opc-at [hidden]{display:none!important}
.opc-at p,.opc-at h2,.opc-at h3{margin:0}
.opc-at button,.opc-at select,.opc-at input{font:inherit;letter-spacing:normal;text-transform:none;box-shadow:none;margin:0}
.opc-at button{cursor:pointer;line-height:1.2}
.opc-at button:disabled{cursor:not-allowed}
.opc-at :focus-visible{outline:3px solid var(--a-blue);outline-offset:2px}
.opc-at-head{margin:0 0 12px}
.opc-at-title{margin:0;font-size:24px;line-height:1.25;font-weight:800;color:var(--a-navy);letter-spacing:-.01em}
.opc-at-lead{margin:4px 0 0;color:var(--a-muted);font-size:16px}
.opc-at-step{display:flex;align-items:center;gap:8px;margin:0 0 10px;font-size:17px;line-height:1.3;font-weight:800;color:var(--a-navy)}
.opc-at-step span{display:inline-grid;place-items:center;flex:0 0 26px;width:26px;height:26px;border-radius:50%;background:var(--a-blue);color:#fff;font-size:15px}

/* ---------- 1. studio (dark) ---------- */
.opc-at-studio{border-radius:18px;background:var(--a-navy);color:#fff;padding:14px;box-shadow:0 0 0 1px #1e293b inset}
.opc-at-studio .opc-at-step{color:#fff}
.opc-at-studio .opc-at-step span{background:var(--a-cyan);color:var(--a-navy)}
.opc-at.is-drag .opc-at-studio{box-shadow:0 0 0 3px var(--a-cyan) inset}
.opc-at .opc-at-studio :focus-visible{outline-color:var(--a-cyan)}
.opc-at-inputs{display:grid;grid-template-columns:minmax(0,1fr);gap:10px}
.opc-at-file{position:absolute;width:1px;height:1px;opacity:0;overflow:hidden;clip:rect(0 0 0 0)}
.opc-at-rec,.opc-at-open{display:flex;width:100%;align-items:center;gap:12px;min-height:68px;padding:10px 14px;margin:0;border-radius:14px;text-align:left;cursor:pointer;transition:background .15s}
.opc-at-open{border:0;background:var(--a-blue);color:#fff}
.opc-at-open:hover{background:var(--a-blue2)}
.opc-at-open svg{flex:0 0 30px;width:30px;height:30px;color:#fff}
.opc-at-file:focus-visible+.opc-at-open{outline:3px solid var(--a-cyan);outline-offset:3px}
.opc-at-file:disabled+.opc-at-open{opacity:.55;cursor:not-allowed}
.opc-at-rec{border:1px solid #64748b;background:transparent;color:#fff}
.opc-at-rec:hover,.opc-at-rec:focus{background:var(--a-navy2);color:#fff}
.opc-at-rec:disabled{opacity:.6}
.opc-at-recdot{flex:0 0 30px;width:30px;height:30px;border-radius:50%;background:#fff;box-shadow:inset 0 0 0 8px #fff,inset 0 0 0 15px var(--a-rec)}
.opc-at.is-rec .opc-at-rec{background:var(--a-rec);border-color:var(--a-rec)}
.opc-at.is-rec .opc-at-recdot{border-radius:7px}
.opc-at-btntext{display:flex;flex-direction:column;gap:2px;min-width:0}
.opc-at-btntext strong{font-size:19px;line-height:1.25;color:inherit}
.opc-at-btnsub{font-size:15px;line-height:1.35;color:inherit}
.opc-at.is-loaded .opc-at-rec,.opc-at.is-loaded .opc-at-open{min-height:50px;padding:6px 12px}
.opc-at.is-loaded .opc-at-btntext strong{font-size:16px}
.opc-at.is-loaded .opc-at-btnsub{display:none}
.opc-at.is-rec .opc-at-btnsub{display:block}
.opc-at.is-loaded .opc-at-recdot{flex-basis:22px;width:22px;height:22px;box-shadow:inset 0 0 0 5px #fff,inset 0 0 0 11px var(--a-rec)}
.opc-at.is-loaded .opc-at-open svg{width:22px;height:22px;flex-basis:22px}
.opc-at-meter{display:flex;align-items:center;gap:10px;margin-top:10px;padding:8px 10px;border-radius:10px;background:var(--a-navy2);font-size:15px;font-weight:700}
.opc-at-mlabel{color:#e2e8f0;white-space:nowrap}
.opc-at-mbar{flex:1;height:12px;border-radius:99px;background:#334155;overflow:hidden}
.opc-at-mbar span{display:block;height:100%;width:0;background:linear-gradient(90deg,#4ade80,#fbbf24 80%,#f87171)}
.opc-at-mtime{font-variant-numeric:tabular-nums;color:#fff;white-space:nowrap}
.opc-at-note{display:flex;align-items:flex-start;gap:8px;margin-top:10px;padding:8px 10px;border-radius:10px;background:#172554;font-size:15px;line-height:1.45;color:#e2e8f0}
.opc-at-note svg{width:18px;height:18px;flex:0 0 18px;margin-top:2px;color:var(--a-cyan)}
.opc-at-note b{color:#fff}
.opc-at-bar{height:8px;border-radius:99px;background:#dbe7f7;overflow:hidden;margin-top:8px}
.opc-at-studio .opc-at-bar{background:#334155}
.opc-at-bar span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--a-blue),var(--a-cyan));transition:width .2s}
.opc-at-bar.is-busy span{width:35%!important;animation:opc-at-slide 1.2s linear infinite}
@keyframes opc-at-slide{from{transform:translateX(-100%)}to{transform:translateX(300%)}}
.opc-at-status{margin-top:8px;font-size:15px;color:#e2e8f0;min-height:2.9em}
.opc-at-status[data-kind=busy]{font-weight:600}
.opc-at-status[data-kind=rec]{color:#fecaca;font-weight:700}
.opc-at-status[data-kind=rec]::before{content:"● "}
.opc-at-status[data-kind=ok]{color:#4ade80;font-weight:600}
.opc-at-status[data-kind=ok]::before{content:"✓ "}
.opc-at-status[data-kind=warn]{color:#fde68a;font-weight:700;background:#422006;border-radius:10px;padding:8px 10px}
.opc-at-status[data-kind=warn]::before{content:"! "}
.opc-at-status[data-kind=error]{color:#fecaca;font-weight:700;background:#450a0a;border-radius:10px;padding:8px 10px}
.opc-at-status[data-kind=error]::before{content:"⚠ "}
.opc-at-info{margin:6px 0 10px;padding:8px 10px;border-radius:10px;background:var(--a-navy2);font-size:15px;font-weight:600;color:#fff;overflow-wrap:anywhere}
.opc-at-infolabel{color:#cbd5e1;font-weight:700}
.opc-at-graph{position:relative;height:190px;border-radius:12px;background:#0b1224;overflow:hidden;cursor:pointer;box-shadow:inset 0 0 0 1px #334155}
.opc-at-graph canvas{display:block;width:100%;height:100%}
.opc-at-empty{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:#cbd5e1;font-size:15px;text-align:center;padding:0 12px}
.opc-at-legend{display:flex;flex-wrap:wrap;align-items:center;gap:4px 8px;margin-top:6px;font-size:13px;font-weight:600;color:#cbd5e1}
.opc-at-sw{display:inline-block;width:18px;height:4px;border-radius:2px;margin-left:6px}
.opc-at-sw:first-child{margin-left:0}
.opc-at-sw-in{background:var(--a-amber)}
.opc-at-sw-out{background:var(--a-cyan);height:5px}
.opc-at-sw-lane{background:#475569;height:2px}
.opc-at-transport{display:flex;align-items:flex-end;flex-wrap:wrap;gap:10px 14px;margin-top:10px}
.opc-at-play{display:inline-flex;align-items:center;gap:8px;min-height:52px;padding:0 20px 0 14px;border-radius:99px;border:0;background:var(--a-blue);color:#fff;font-weight:800;font-size:17px}
.opc-at-play:hover,.opc-at-play:focus{background:var(--a-blue2);color:#fff}
.opc-at-play:disabled{background:#334155;color:#cbd5e1}
.opc-at-play svg{width:24px;height:24px;fill:currentColor}
.opc-at-abwrap{display:flex;flex-direction:column;gap:2px}
.opc-at-ablabel{font-size:13px;font-weight:700;color:#cbd5e1}
.opc-at-time{margin-left:auto;font-variant-numeric:tabular-nums;color:#e2e8f0;font-size:16px;font-weight:600;padding-bottom:12px}
.opc-at-stat{margin:10px 0 0;padding:8px 10px;border-radius:10px;background:var(--a-navy2);font-size:15px;color:#e2e8f0}
.opc-at-stat b{color:var(--a-cyan);font-size:17px}

/* segmented control (before / after) */
.opc-at-seg{display:inline-flex;flex-wrap:wrap;border-radius:12px;padding:3px;gap:3px;background:var(--a-navy2)}
.opc-at-seg button{min-height:44px;padding:0 14px;border:0;border-radius:9px;background:transparent;color:#e2e8f0;font-weight:700;font-size:15px;white-space:nowrap}
.opc-at-seg button:hover,.opc-at-seg button:focus{background:#334155;color:#fff}
.opc-at-seg button[aria-checked=true]{background:var(--a-cyan);color:var(--a-navy)}
.opc-at-seg button[data-at-ab=a][aria-checked=true]{background:var(--a-amber);color:var(--a-navy)}
.opc-at-seg button[aria-checked=true]::before{content:"● ";font-size:.8em}

/* ---------- 2–4 cards ---------- */
.opc-at-panels{display:grid;grid-template-columns:minmax(0,1fr);gap:12px;margin-top:12px}
.opc-at-card{border:1px solid var(--a-line);border-radius:16px;background:#fff;padding:14px}
.opc-at-label{display:block;font-size:15px;font-weight:700;color:var(--a-navy);margin:0 0 4px}
.opc-at-label output{color:var(--a-blue2);font-variant-numeric:tabular-nums}
.opc-at-unit{font-weight:600;color:var(--a-muted)}
.opc-at-hint{display:block;margin:8px 0 0;font-size:15px;line-height:1.45;color:var(--a-muted)}
.opc-at-pair{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:10px}
.opc-at-field{display:block}
.opc-at select,.opc-at input[type=number]{display:block;width:100%;min-height:48px;padding:8px 10px;border:1px solid #94a3b8;border-radius:10px;background:#fff;color:var(--a-navy);font-size:16px;font-weight:600}
.opc-at select:disabled{background:#f1f5f9;color:#475569}
.opc-at-range{display:block}
.opc-at input[type=range]{display:block;width:100%;height:44px;margin:0;accent-color:var(--a-blue);background:transparent}
.opc-at-chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:4px}
.opc-at-chip{min-height:44px;padding:0 12px;border:1px solid var(--a-line);border-radius:99px;background:var(--a-light);color:var(--a-navy);font-size:15px}
.opc-at-chip:hover,.opc-at-chip:focus{border-color:var(--a-blue);color:var(--a-navy);background:#e0edff}
.opc-at-chip[aria-pressed=true]{background:var(--a-blue);border-color:var(--a-blue);color:#fff}
.opc-at-dls{display:flex;flex-wrap:wrap;gap:8px}
.opc-at-dl{display:inline-flex;flex:1 1 150px;align-items:center;justify-content:center;gap:8px;min-height:52px;padding:0 14px;border-radius:12px;border:2px solid var(--a-blue);background:#fff;color:var(--a-blue2);font-weight:800;font-size:17px;white-space:nowrap}
.opc-at-dl.is-main{background:var(--a-blue);color:#fff}
.opc-at-dl:hover,.opc-at-dl:focus{background:var(--a-blue2);border-color:var(--a-blue2);color:#fff}
.opc-at-dl:disabled{background:#e2e8f0;border-color:#cbd5e1;color:#475569}
.opc-at-dl svg{width:22px;height:22px}
.opc-at-hint b{color:var(--a-navy);overflow-wrap:anywhere}
.opc-at-savewrap{margin-top:8px}
.opc-at-save{font-weight:700;color:var(--a-blue2);overflow-wrap:anywhere}

/* ---------- more options ---------- */
.opc-at-more{margin-top:12px;border:1px solid var(--a-line);border-radius:16px;background:var(--a-light)}
.opc-at-more summary{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 10px;min-height:52px;padding:14px;cursor:pointer;font-weight:800;font-size:17px;color:var(--a-navy);list-style:none}
.opc-at-more summary::-webkit-details-marker{display:none}
.opc-at-more summary::before{content:"+";display:inline-grid;place-items:center;width:24px;height:24px;border-radius:6px;background:var(--a-blue);color:#fff;font-size:18px;line-height:1}
.opc-at-more[open] summary::before{content:"−"}
.opc-at-more summary span{font-weight:600;font-size:15px;color:var(--a-muted)}
.opc-at-moregrid{display:grid;grid-template-columns:minmax(0,1fr);gap:16px;padding:0 14px 16px}
.opc-at-switch{display:inline-flex;align-items:center;gap:10px;min-height:44px;padding:4px 14px 4px 6px;border:1px solid #94a3b8;border-radius:99px;background:#fff;color:var(--a-navy);font-weight:700;font-size:15px}
.opc-at-knob{position:relative;width:44px;height:26px;border-radius:99px;background:#94a3b8;transition:background .15s}
.opc-at-knob::after{content:"";position:absolute;top:3px;left:3px;width:20px;height:20px;border-radius:50%;background:#fff;transition:transform .15s}
.opc-at-switch[aria-checked=true] .opc-at-knob{background:var(--a-blue)}
.opc-at-switch[aria-checked=true] .opc-at-knob::after{transform:translateX(18px)}

@media (min-width:640px){
	.opc-at-inputs{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
	.opc-at-studio{padding:18px}
	.opc-at-graph{height:230px}
	.opc-at-moregrid{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
}
@media (min-width:960px){
	.opc-at-panels{grid-template-columns:minmax(0,1fr) minmax(0,1.15fr) minmax(0,1fr)}
	.opc-at-title{font-size:26px}
}
@media (prefers-reduced-motion:reduce){.opc-at *{transition:none!important;animation:none!important}}
.opc-at .opc-at-dl,.opc-at .opc-at-chip b,.opc-at .opc-at-play{font-weight:800}