/*! Note to Frequency Converter 2.0.0 | pitchdetector.com | keyboard-first design */
.pnh{--pnh-blue:#2563eb;--pnh-blue2:#1d4ed8;--pnh-violet:#7c3aed;--pnh-ink:#0f172a;--pnh-muted:#475569;--pnh-line:#e2e8f0;--pnh-tint:#f5f3ff;box-sizing:border-box;max-width:1000px;margin:0 auto 1.75em;color:var(--pnh-ink);font-family:inherit;line-height:1.5}
.pnh *,.pnh *::before,.pnh *::after{box-sizing:border-box}.pnh [hidden]{display:none!important}
.pnh .pnh-title{margin:0 0 8px;padding:0;font-size:1.25rem;line-height:1.25;font-weight:700;color:var(--pnh-ink);letter-spacing:normal;text-transform:none}
.pnh-top{display:grid;border:1px solid var(--pnh-line);border-bottom:0;border-radius:18px 18px 0 0;background:#fff;overflow:hidden}
.pnh-pick{padding:14px 16px}
.pnh .pnh-lbl{display:block;margin:0 0 4px;font-weight:700;font-size:.95rem}
.pnh .pnh-input{width:100%;margin:0;min-height:56px;border:2px solid #cbd5e1;border-radius:14px;padding:0 14px;font:800 1.9rem/1 ui-monospace,"SFMono-Regular",Consolas,monospace;color:var(--pnh-ink);background:#fff;text-transform:none;box-shadow:none}
.pnh .pnh-input:focus{border-color:var(--pnh-violet);outline:0;box-shadow:0 0 0 4px rgba(124,58,237,.15)}
.pnh.is-bad .pnh-input{border-color:#b91c1c}
.pnh .pnh-hint{margin:6px 2px 10px;font-size:.84rem;color:var(--pnh-muted)}.pnh .pnh-hint[data-kind="error"]{color:#b91c1c;font-weight:600}
.pnh-names{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:5px;margin:0 0 10px}
.pnh .pnh-pc{appearance:none;margin:0;min-height:40px;padding:0;border:1px solid #cbd5e1;border-radius:8px;background:#fff;color:var(--pnh-ink);font:700 .95rem/1 inherit;font-family:inherit;cursor:pointer;box-shadow:none;text-transform:none}
.pnh .pnh-pc.is-black{background:#1e293b;color:#fff;border-color:#1e293b}
.pnh .pnh-pc:hover{border-color:var(--pnh-violet)}
.pnh .pnh-pc[aria-pressed="true"]{background:var(--pnh-violet);border-color:var(--pnh-violet);color:#fff;box-shadow:0 0 0 3px rgba(124,58,237,.25)}
.pnh-oct{display:flex;align-items:center;gap:8px;font-weight:700;font-size:.92rem}
.pnh .pnh-oct button{appearance:none;margin:0;width:44px;height:44px;border:1px solid #cbd5e1;border-radius:10px;background:#fff;color:var(--pnh-ink);font:700 1.3rem/1 inherit;font-family:inherit;cursor:pointer;box-shadow:none;padding:0}
.pnh .pnh-oct button:hover{border-color:var(--pnh-violet)}
.pnh .pnh-oct output{min-width:2ch;text-align:center;font:800 1.3rem/1 ui-monospace,Consolas,monospace}
/* Answer */
.pnh-result{padding:16px;background:var(--pnh-tint);display:flex;flex-direction:column;justify-content:center;align-items:flex-start;border-top:1px solid var(--pnh-line)}
.pnh .pnh-eq{margin:0;font-weight:800;font-size:1.4rem;color:var(--pnh-violet)}
.pnh .pnh-hz{margin:0;display:flex;align-items:baseline;gap:8px;font:800 3.4rem/1.05 ui-monospace,"SFMono-Regular",Consolas,monospace;font-variant-numeric:tabular-nums;color:var(--pnh-ink);letter-spacing:-.03em}
.pnh .pnh-hz small{font:700 1.2rem/1 system-ui,sans-serif;color:var(--pnh-muted);letter-spacing:0}
.pnh .pnh-sub{margin:6px 0 12px;color:var(--pnh-muted);font-size:.9rem}
.pnh-btns{display:flex;flex-wrap:wrap;gap:8px}
.pnh .pnh-btn{appearance:none;display:inline-flex;align-items:center;justify-content:center;margin:0;min-height:46px;padding:0 16px;border:2px solid var(--pnh-violet);border-radius:12px;background:#fff;color:var(--pnh-violet);font:700 1rem/1.1 inherit;font-family:inherit;cursor:pointer;box-shadow:none;text-transform:none;letter-spacing:normal}
.pnh .pnh-btn:hover:not(:disabled){background:#ede9fe}
.pnh .pnh-btn.pnh-main{background:linear-gradient(135deg,var(--pnh-blue),var(--pnh-violet));border-color:transparent;color:#fff}
.pnh .pnh-btn.pnh-main:hover:not(:disabled){background:linear-gradient(135deg,var(--pnh-blue2),var(--pnh-violet))}
.pnh .pnh-btn:disabled{opacity:.45;cursor:not-allowed}
/* 88-key piano */
.pnh-pianowrap{overflow-x:auto;overflow-y:hidden;background:#0f172a;border-radius:0 0 18px 18px;padding:10px 10px 8px;scrollbar-color:#475569 #0f172a;-webkit-overflow-scrolling:touch}
.pnh-piano{position:relative;height:118px;margin:0 auto}
.pnh .pnh-piano button{appearance:none;position:absolute;top:0;margin:0;padding:0;border:0;cursor:pointer;box-shadow:none;font:600 9px/1 system-ui,sans-serif;text-transform:none}
.pnh .pnh-w{width:25px;height:116px;background:#fff;border:1px solid #94a3b8;border-radius:0 0 5px 5px;z-index:1;color:#64748b;display:flex;align-items:flex-end;justify-content:center;padding-bottom:5px}
.pnh .pnh-b{width:16px;height:72px;background:#1e293b;border:1px solid #000;border-radius:0 0 4px 4px;z-index:2}
.pnh .pnh-w:hover{background:#ede9fe}.pnh .pnh-b:hover{background:#4c1d95}
.pnh .pnh-piano .is-on{background:var(--pnh-violet);color:#fff;border-color:#4c1d95}
.pnh-w span{pointer-events:none}
/* Options */
.pnh-opts{display:grid;gap:10px;margin:14px 0 0;align-items:end}
.pnh .pnh-a4{margin:0;padding:0;border:0;min-width:0}
.pnh .pnh-a4 legend{padding:0;margin:0 0 4px;font-size:.8rem;font-weight:700;color:var(--pnh-muted)}
.pnh-seg{display:flex;flex-wrap:wrap;gap:0;border:1px solid #cbd5e1;border-radius:10px;overflow:hidden;width:max-content;max-width:100%}
.pnh .pnh-seg button{appearance:none;margin:0;min-height:44px;padding:0 12px;border:0;border-right:1px solid #cbd5e1;background:#fff;color:var(--pnh-ink);font:700 .92rem/1.1 inherit;font-family:inherit;cursor:pointer;box-shadow:none;text-transform:none}
.pnh .pnh-seg button:last-child{border-right:0}
.pnh .pnh-seg button small{font-weight:500;font-size:.72rem;color:var(--pnh-muted)}
.pnh .pnh-seg button[aria-checked="true"]{background:var(--pnh-ink);color:#fff}.pnh .pnh-seg button[aria-checked="true"] small{color:#cbd5e1}
.pnh-opts label{display:grid;gap:3px;margin:0;min-width:0;font-size:.8rem;font-weight:700;color:var(--pnh-muted)}
.pnh .pnh-opts input,.pnh .pnh-opts select{width:100%;min-height:44px;margin:0;border:1px solid #cbd5e1;border-radius:10px;padding:0 10px;font:500 .95rem/1.2 inherit;font-family:inherit;background:#fff;color:var(--pnh-ink)}
.pnh .pnh-a4 label{margin-top:8px;max-width:200px}
/* Facts + tables */
.pnh .pnh-facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:14px 0 0}
.pnh .pnh-facts div{border:1px solid var(--pnh-line);border-radius:12px;padding:8px 12px;background:#fff;min-width:0}
.pnh .pnh-facts .pnh-wide{grid-column:1/-1}
.pnh .pnh-facts dt{margin:0;font-size:.74rem;font-weight:700;letter-spacing:.03em;text-transform:uppercase;color:var(--pnh-muted)}
.pnh .pnh-facts dd{margin:0;font:700 .98rem/1.35 ui-monospace,Consolas,monospace;font-variant-numeric:tabular-nums}
.pnh .pnh-msg{min-height:1.4em;margin:8px 2px;font-size:.88rem;color:var(--pnh-muted)}
.pnh-tables{display:grid;gap:12px}
.pnh .pnh-table{width:100%;margin:0;border-collapse:collapse;background:#fff;border:1px solid var(--pnh-line);font-size:.92rem;font-variant-numeric:tabular-nums}
.pnh .pnh-table caption{caption-side:top;text-align:left;font-weight:700;font-size:.92rem;color:var(--pnh-ink);padding:0 0 4px}
.pnh .pnh-table th,.pnh .pnh-table td{border:0;border-bottom:1px solid var(--pnh-line);padding:2px 10px;text-align:left;font-weight:400}
.pnh .pnh-table thead th{background:var(--pnh-tint);font-size:.8rem;font-weight:700;padding:6px 10px}
.pnh .pnh-table td{font-family:ui-monospace,Consolas,monospace}
.pnh .pnh-table tr.is-on{background:#ede9fe}.pnh .pnh-table tr.is-on .pnh-rowbtn{font-weight:800}
.pnh .pnh-rowbtn{appearance:none;margin:0;padding:6px 0;min-height:32px;border:0;background:none;color:var(--pnh-blue2);font:600 .92rem/1.2 inherit;font-family:inherit;cursor:pointer;text-decoration:underline;text-underline-offset:3px;box-shadow:none;text-align:left}
.pnh-sr{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;margin:0}
.pnh :focus-visible{outline:3px solid var(--pnh-violet);outline-offset:2px}.pnh .pnh-pianowrap:focus-visible{outline-offset:-3px;outline-color:#c4b5fd}
@media (min-width:720px){.pnh-top{grid-template-columns:minmax(0,1.1fr) minmax(0,1fr)}.pnh-result{border-top:0;border-left:1px solid var(--pnh-line);padding:22px}.pnh-pick{padding:18px 20px}.pnh-names{grid-template-columns:repeat(12,minmax(0,1fr))}.pnh .pnh-hz{font-size:3.8rem}.pnh-opts{grid-template-columns:minmax(0,2.2fr) minmax(0,1fr) minmax(0,1fr)}.pnh .pnh-facts{grid-template-columns:repeat(5,minmax(0,1fr))}.pnh .pnh-facts .pnh-wide{grid-column:auto}.pnh-tables{grid-template-columns:1fr 1fr}}