/* Singing Note Detector 1.0.0 – scoped to .snd. singingrangetest.com palette (Astra): blue #046bd2, slate #1e293b. */
.snd{--snd-ink:#1e293b;--snd-muted:#334155;--snd-line:#d1d5db;--snd-bg:#fff;--snd-soft:#f5f8fc;--snd-accent:#046bd2;--snd-good:#047857;--snd-off:#b45309;--snd-err:#b91c1c;box-sizing:border-box;max-width:780px;margin:1em 0 1.5em;padding:16px;background:var(--snd-bg);color:var(--snd-ink);border:1px solid var(--snd-line);border-radius:12px;box-shadow:0 1px 3px rgba(20,30,50,.06);font-size:16px;line-height:1.5}
.snd *,.snd *::before,.snd *::after{box-sizing:inherit}
.snd [hidden]{display:none!important}
.snd .snd-title{margin:0 0 4px;font-size:1.35em;line-height:1.25;color:var(--snd-ink)}
.snd .snd-intro{margin:0 0 12px;color:var(--snd-muted);font-size:.95em}
.snd .snd-actions{display:flex;flex-wrap:wrap;gap:8px;margin:0}
.snd .snd-btn{min-height:44px;padding:9px 16px;font:inherit;font-weight:600;color:var(--snd-ink);background:#fff;border:1px solid #cbd5e1;border-radius:8px;cursor:pointer;line-height:1.2}
.snd .snd-btn:hover{border-color:var(--snd-accent)}
.snd .snd-btn-primary{color:#fff;background:var(--snd-accent);border-color:var(--snd-accent)}
.snd .snd-btn-primary:hover{background:#045cb4}
.snd .snd-btn-quiet{border-color:transparent;background:transparent;color:var(--snd-accent)}
.snd .snd-btn:disabled{opacity:.5;cursor:not-allowed}
.snd button:focus-visible,.snd select:focus-visible{outline:3px solid #8fc1ee;outline-offset:2px}
.snd select{box-sizing:border-box;width:100%;min-height:44px;padding:8px 10px;font:inherit;color:var(--snd-ink);background:#fff;border:1px solid #cbd5e1;border-radius:8px}
.snd .snd-status{margin:8px 0 12px;font-size:.92em;color:var(--snd-muted)}
.snd .snd-status.snd-error{color:var(--snd-err);font-weight:600}
.snd .snd-display{padding:14px;background:var(--snd-soft);border:1px solid var(--snd-line);border-radius:10px}
.snd .snd-top{display:flex;justify-content:space-between;align-items:center;gap:10px;font-size:.88em;font-weight:600;color:var(--snd-muted);margin:0 0 8px}
.snd .snd-display[data-snd-mode="noisy"] [data-snd-state],.snd .snd-display[data-snd-mode="nosignal"] [data-snd-state]{color:var(--snd-off)}
.snd .snd-display[data-snd-mode="note"] [data-snd-state]{color:var(--snd-good)}
.snd .snd-level{flex:0 0 90px;height:6px;background:#d1d5db;border-radius:3px;overflow:hidden}
.snd .snd-level span{display:block;height:100%;width:0;background:#94a3b8;transition:width .08s linear}
.snd .snd-now{display:flex;flex-direction:column;align-items:center;padding:10px 6px;background:#fff;border:1px solid var(--snd-line);border-radius:10px}
.snd .snd-label{font-size:.8em;color:var(--snd-muted)}
.snd .snd-note{font-size:3.4em;font-weight:800;line-height:1.05;color:var(--snd-accent);font-variant-numeric:tabular-nums;transition:opacity .2s}
.snd .snd-sub{font-size:.9em;color:var(--snd-muted);font-variant-numeric:tabular-nums}
.snd .snd-stale .snd-note,.snd .snd-stale .snd-needle,.snd .snd-stale .snd-cents{opacity:.4}
.snd .snd-cents{display:block;margin:12px 0 0;text-align:center;font-weight:700;font-variant-numeric:tabular-nums}
.snd .snd-good{color:var(--snd-good)}
.snd .snd-off{color:var(--snd-off)}
.snd .snd-meter{position:relative;height:30px;margin:10px 0 24px;background:linear-gradient(90deg,#fde7c8,#fff 35%,#fff 65%,#fde7c8);border:1px solid var(--snd-line);border-radius:6px}
.snd .snd-zone{position:absolute;top:0;bottom:0;left:40%;width:20%;background:rgba(16,185,129,.18)}
.snd .snd-needle{position:absolute;top:-4px;bottom:-4px;left:50%;width:4px;margin-left:-2px;background:var(--snd-ink);border-radius:2px;transition:left .08s linear}
.snd .snd-scale{position:absolute;left:0;right:0;top:100%;display:flex;justify-content:space-between;font-size:.72em;color:var(--snd-muted);padding-top:2px}
.snd .snd-held{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 10px;padding:8px 10px;background:#fff;border:1px solid var(--snd-line);border-radius:8px}
.snd .snd-held-val{font-weight:700;font-variant-numeric:tabular-nums}
.snd .snd-history{margin:14px 0 0;padding:14px;border:1px solid var(--snd-line);border-radius:10px}
.snd .snd-history-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:4px 10px;margin:0 0 8px}
.snd .snd-h3{margin:0;font-size:1.1em;line-height:1.3}
.snd .snd-list{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 12px;padding:0;list-style:none;min-height:34px}
.snd .snd-list li{margin:0;padding:4px 10px;background:var(--snd-soft);border:1px solid var(--snd-line);border-radius:999px;font-size:.92em;font-variant-numeric:tabular-nums}
.snd .snd-list li b{color:var(--snd-ink)}
.snd .snd-ref{margin:14px 0 0}
.snd .snd-ref label{display:block;font-weight:600;font-size:.9em;margin:0 0 5px}
.snd .snd-ref-row{display:flex;gap:8px}
.snd .snd-ref-row select{flex:1 1 auto;min-width:0}
.snd .snd-ref-row .snd-btn{flex:none}
.snd .snd-small{margin:8px 0 0;font-size:.85em;color:var(--snd-muted)}
.snd .snd-history-head .snd-small{margin:0}
.snd .snd-note-foot{margin:14px 0 0}
.snd .snd-sr{position:absolute;width:1px;height:1px;margin:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
@media (min-width:600px){
	.snd{padding:22px}
	.snd .snd-note{font-size:4.2em}
}
@media (prefers-reduced-motion:reduce){.snd .snd-needle,.snd .snd-level span,.snd .snd-note{transition:none}}