/* Semitone Calculator 1.0.0 | onlinepitchchanger.com | brand: #0067FF primary, #22B8F0 accent, #0F172A navy.
   Calculator layout: inputs card + navy result display + collapsed "More". Sizes in px (Astra shrinks rem); text ≥ 15px, labels ≥ 13px; contrast ≥ 4.5:1. */
.opc-sc{--sc-blue:#0067ff;--sc-blue2:#0052cc;--sc-cyan:#22b8f0;--sc-navy:#0f172a;--sc-navy2:#1e293b;--sc-text:#334155;--sc-muted:#475569;--sc-light:#f0f7ff;--sc-line:#d6e4f5;--sc-err:#b91c1c;
	max-width:1040px;margin:0 auto 1.75em;color:var(--sc-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-sc *,.opc-sc *::before,.opc-sc *::after{box-sizing:border-box}
.opc-sc [hidden]{display:none!important}
.opc-sc p,.opc-sc dl,.opc-sc dd,.opc-sc h2,.opc-sc h3,.opc-sc ul{margin:0}
.opc-sc button,.opc-sc select,.opc-sc input{font:inherit;letter-spacing:normal;text-transform:none;box-shadow:none;margin:0}
.opc-sc button{cursor:pointer;line-height:1.2}
.opc-sc :focus-visible{outline:3px solid var(--sc-blue);outline-offset:2px}
.opc-sc-head{margin:0 0 12px}
.opc-sc-title{margin:0;font-size:24px;line-height:1.25;font-weight:800;color:var(--sc-navy);letter-spacing:-.01em}
.opc-sc-lead{margin:4px 0 0;color:var(--sc-muted);font-size:16px}

/* mode switch */
.opc-sc-modes{display:grid;grid-template-columns:1fr 1fr;gap:6px;padding:5px;border-radius:14px;background:var(--sc-navy);margin:0 0 12px;max-width:460px}
.opc-sc-modes button{min-height:46px;padding:8px 12px;border:0;border-radius:10px;background:transparent;color:#fff;font-size:16px;font-weight:800}
.opc-sc-modes button:hover{background:var(--sc-navy2)}
.opc-sc-modes button[aria-checked="true"]{background:var(--sc-blue)}

.opc-sc-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:12px}
.opc-sc-in{border:1px solid var(--sc-line);border-radius:16px;background:var(--sc-light);padding:14px}
.opc-sc-panel{display:grid;gap:10px}
.opc-sc-field{display:block;margin:0}
.opc-sc-label{display:block;font-size:15px;font-weight:700;color:var(--sc-navy);margin:0 0 4px}
.opc-sc-unit{font-weight:600;color:var(--sc-muted)}
.opc-sc-hint{font-size:15px;line-height:1.45;color:var(--sc-muted)}
.opc-sc select,.opc-sc input{display:block;width:100%;min-height:48px;padding:8px 12px;border:1px solid #94a3b8;border-radius:10px;background:#fff;color:var(--sc-navy);font-size:17px;font-weight:600}
.opc-sc input[aria-invalid="true"]{border:2px solid var(--sc-err);background:#fef2f2}
.opc-sc-pair{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:8px}
.opc-sc-pair .opc-sc-label{grid-column:1/-1;margin:0}
.opc-sc-swap{justify-self:start;min-height:44px;padding:0 14px;border:1px solid #9cc3f5;border-radius:99px;background:#fff;color:var(--sc-blue2);font-size:15px;font-weight:700}
.opc-sc-swap:hover{background:#e3efff}

/* result display */
.opc-sc-out{display:flex;flex-direction:column;gap:10px;border-radius:16px;background:var(--sc-navy);color:#e2e8f0;padding:16px}
.opc-sc-rlabel{font-size:17px;font-weight:700;color:#cbd5e1;overflow-wrap:anywhere}
.opc-sc-big{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 10px}
.opc-sc-big output{font-size:56px;line-height:1;font-weight:800;color:#fff;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.opc-sc-big span{font-size:20px;font-weight:700;color:var(--sc-cyan)}
.opc-sc-ways{display:flex;flex-wrap:wrap;gap:8px;padding:0!important;list-style:none!important}
.opc-sc-ways li{margin:0!important;padding:8px 12px;border:1px solid #475569;border-radius:10px;font-size:16px;font-weight:700;color:#e2e8f0;background:var(--sc-navy2)}
.opc-sc-ways li.is-short{border:2px solid var(--sc-cyan);color:#fff}
.opc-sc-ways li span{display:inline-block;margin-left:6px;padding:1px 7px;border-radius:99px;background:var(--sc-cyan);color:var(--sc-navy);font-size:13px;font-weight:800}
.opc-sc-ivl{font-size:17px;color:#e2e8f0}
.opc-sc-ivl strong{color:#fff}
.opc-sc-note{padding:8px 10px;border-left:4px solid var(--sc-cyan);background:var(--sc-navy2);font-size:15px;color:#e2e8f0}
.opc-sc-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 18px;border:0;border-radius:12px;background:var(--sc-blue);color:#fff!important;font-size:16px;font-weight:800;text-decoration:none!important;text-align:center}
.opc-sc-btn:hover{background:var(--sc-blue2)}
.opc-sc-btn svg{width:20px;height:20px;fill:currentColor}
.opc-sc-out .opc-sc-btn{display:block;padding:12px 18px;line-height:1.3}
.opc-sc-btn2{background:var(--sc-navy)}
.opc-sc-btn2:hover{background:var(--sc-navy2)}

/* More (collapsed) */
.opc-sc-more{margin:12px 0 0;border:1px solid var(--sc-line);border-radius:16px;background:#fff}
.opc-sc-more summary{min-height:48px;padding:12px 16px;font-size:16px;font-weight:800;color:var(--sc-blue2);cursor:pointer}
.opc-sc-morebody{display:grid;gap:14px;padding:0 16px 16px}
.opc-sc-facts{border-top:1px solid var(--sc-line)}
.opc-sc-facts div{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2fr);gap:10px;padding:7px 0;border-bottom:1px solid var(--sc-line)}
.opc-sc-facts dt{font-size:15px;font-weight:700;color:var(--sc-navy)}
.opc-sc-facts dd{font-size:15px;color:var(--sc-text);font-variant-numeric:tabular-nums}
.opc-sc-playrow{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px}
.opc-sc-msg{font-size:15px;color:var(--sc-muted)}
.opc-sc-hzbox{padding:12px;border-radius:12px;background:var(--sc-light)}
.opc-sc-hzrow{display:grid;grid-template-columns:minmax(0,1fr);gap:10px;margin:0 0 10px}
.opc-sc-hzout{font-size:16px;color:var(--sc-navy)}
.opc-sc-hzout[data-kind="error"]{padding:8px 10px;border:2px solid var(--sc-err);border-radius:10px;background:#fef2f2;color:var(--sc-err);font-weight:700}

/* examples */
.opc-sc-ex{margin:14px 0 0}
.opc-sc-h3{font-size:18px;font-weight:800;color:var(--sc-navy);margin:0 0 6px}
.opc-sc-tablewrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
.opc-sc-table{width:100%;border-collapse:collapse;font-size:15px;line-height:1.4;background:#fff;margin:0}
.opc-sc-table th,.opc-sc-table td{padding:8px 10px;border:1px solid var(--sc-line);text-align:left;vertical-align:top;color:var(--sc-text)}
.opc-sc-table thead th{background:var(--sc-navy);color:#fff;font-weight:700}
.opc-sc-table tbody th{font-weight:700;background:var(--sc-light)}
.opc-sc-table a{color:var(--sc-blue2);text-decoration:underline}

@media (max-width:420px){
	.opc-sc-big output{font-size:48px}
	.opc-sc-facts div{grid-template-columns:minmax(0,1fr);gap:0}
	.opc-sc-table th,.opc-sc-table td{padding:7px 8px}
}
@media (min-width:600px){
	.opc-sc-hzrow{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
}
@media (min-width:880px){
	.opc-sc-grid{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}
	.opc-sc-out{padding:18px 20px}
	.opc-sc-big output{font-size:64px}
	.opc-sc-out .opc-sc-btn{align-self:flex-start}
}
@media (prefers-reduced-motion:reduce){.opc-sc *{transition:none!important;scroll-behavior:auto!important}}