/* The noisehack idea — the app as one physical instrument on a table —
   transposed to what this instrument is: a baroque music box. Walnut
   case, brass trim and winding keys, an engraved nameplate for the
   piece, the interpretation as a parchment program recessed into the
   lid. Self-contained: period serif stacks, no webfonts. */
:root{
  --desk:#cbc2b2; --case:#42301c; --case-2:#4e3a23; --seam:#5f4527;
  --edge:#241809;
  --ink:#ead9b4; --dim:#b3a184; --faint:#8a7a5e;
  --brass:#c8a24b; --brass-hi:#e0bd6a; --brass-dark:#7a5f2c;
  --parch:#ecdfc3; --parch-ink:#4b3a22; --parch-dim:#8a744f;
  --v0:#d9a866; --v1:#8fb573; --v2:#c98ba5; --v3:#7fb2c9; --v4:#a68fc9;
  --v5:#c9c07f;
  --serif:'Iowan Old Style','Palatino Linotype',Palatino,Georgia,serif;
  --mono:ui-monospace,'SF Mono',Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
body{font:15px/1.5 var(--serif);background:var(--desk);color:var(--ink);
     margin:0;padding:2.5rem 1rem 3rem}
.paper{max-width:46rem;margin:0 auto;padding:1.6rem 1.7rem 1.9rem;
     background:linear-gradient(172deg,var(--case-2),var(--case) 55%);
     border:1px solid var(--edge);border-radius:.45rem;
     box-shadow:0 0 0 4px var(--brass-dark),0 0 0 5px var(--edge),
       0 1.2rem 2.2rem rgba(0,0,0,.38),
       inset 0 1px 0 rgba(255,240,200,.09)}
.eyebrow{font:600 11px/1 var(--serif);letter-spacing:.28em;color:var(--dim);
     text-transform:uppercase}
h1{margin:0 0 .7rem;font:600 26px/1.2 var(--serif);
     letter-spacing:.045em;color:var(--brass-hi);
     text-shadow:0 -1px 0 rgba(20,10,0,.65),0 1px 1px rgba(255,240,200,.12)}
h1 .idx{font:400 13px var(--mono);color:var(--dim);margin-left:.6rem}
.seekrow{display:flex;align-items:center;gap:1rem;margin:1rem 0}
.railwrap{flex:1;min-width:0}
.rail{position:relative;height:15px;margin:0 0 .2rem;cursor:pointer}
.rail::before{content:"";position:absolute;left:0;right:0;top:6px;height:3px;
     background:var(--edge);border-radius:2px;
     box-shadow:0 1px 0 rgba(255,240,200,.12)}
.rail .fill{position:absolute;left:0;top:6px;height:3px;width:0%;
     background:var(--brass);border-radius:2px}
.rail .fill::after{content:"";position:absolute;right:-6px;top:50%;
     transform:translateY(-50%);width:12px;height:12px;border-radius:50%;
     background:radial-gradient(circle at 35% 30%,var(--brass-hi),var(--brass) 55%,var(--brass-dark));
     box-shadow:0 1px 2px rgba(0,0,0,.5)}
.rail:focus-visible{outline:2px solid var(--brass);outline-offset:2px}
.times{display:flex;justify-content:space-between;font:11px var(--mono);
     color:var(--faint);font-variant-numeric:tabular-nums}
.row{display:flex;gap:1rem;align-items:center;flex-wrap:wrap}

button{border:0;border-radius:.3rem;padding:.4rem .95rem;cursor:pointer;
     font:600 14px var(--serif);letter-spacing:.02em;color:#2c1d0a;
     background:linear-gradient(178deg,var(--brass-hi),var(--brass) 50%,#a9822f);
     box-shadow:0 2px 0 var(--brass-dark),0 3px 4px rgba(0,0,0,.35),
       inset 0 1px 1px rgba(255,250,230,.5);
     transition:filter .15s}
button:hover{filter:brightness(1.07)}
button:active{transform:translateY(2px);
     box-shadow:0 0 0 var(--brass-dark),0 1px 2px rgba(0,0,0,.35),
       inset 0 1px 1px rgba(255,250,230,.5)}
button:focus-visible{outline:2px solid var(--parch);outline-offset:2px}
button.primary{padding:.45rem 1.2rem}
button.on{background:var(--edge);color:var(--brass);
     box-shadow:inset 0 2px 4px rgba(0,0,0,.6),0 0 0 1px var(--brass-dark)}
select{background:var(--edge);color:var(--ink);border:1px solid var(--seam);
     padding:.4rem .5rem;border-radius:.3rem;font:inherit;min-width:0}
select:focus-visible{outline:2px solid var(--brass);outline-offset:1px}
#piecesel{flex:1}
.part{background:rgba(0,0,0,.22);border:1px solid var(--seam);
     border-left:4px solid var(--vc,var(--dim));border-radius:.3rem;
     padding:.6rem .8rem;margin:.6rem 0;
     box-shadow:inset 0 1px 3px rgba(0,0,0,.35)}
.part .head{display:flex;align-items:baseline;gap:.6rem;margin-bottom:.4rem}
.part b{font:600 15px var(--serif);letter-spacing:.02em}
.part .patch{font:12px var(--mono);color:var(--vc,var(--dim))}
.part .tacet{font:italic 13px var(--serif);color:var(--faint);margin-left:auto}
.part.muted{opacity:.45}
input[type=range]{width:7.5rem;accent-color:var(--brass)}
.fader{position:relative;display:inline-flex;align-items:center;width:7.5rem}
.fader input[type=range]{position:relative;width:100%}
.fader .meter{position:absolute;left:0;top:50%;transform:translateY(-50%);
     height:16px;width:0%;border-radius:2px;pointer-events:none;
     background:color-mix(in srgb, var(--vc,var(--dim)) 45%, transparent)}
.ledger{margin:1.6rem 0 0}
.ledger .eyebrow{margin-bottom:.5rem;display:block}
#whys{min-height:9.2em;max-height:15em;overflow-y:auto;position:relative;
     background:var(--parch);color:var(--parch-ink);
     border:1px solid var(--edge);border-radius:2px;
     padding:.5rem .7rem;font:12px/1.62 var(--mono);
     box-shadow:inset 0 2px 8px rgba(40,25,5,.4);
     scrollbar-width:thin;scrollbar-color:var(--parch-dim) transparent}
.why{display:flex;gap:.55em;align-items:baseline}
.why.in{animation:rise .24s ease}
.why .at{flex:none;color:var(--parch-dim);font-variant-numeric:tabular-nums}
@keyframes rise{from{opacity:0;transform:translateY(3px)}to{opacity:1}}
.why .chip{flex:none;font-size:10px;letter-spacing:.06em;color:#fff8ea;
     background:color-mix(in srgb, var(--vc,var(--parch-dim)) 78%, #4b3a22);
     border-radius:2px;padding:0 .45em;font-weight:700;
     transform:translateY(-1px)}
.why b{color:#33250f;font-weight:700}
.why .delta{color:var(--parch-ink)}
.why .cite{color:var(--parch-dim);font-style:italic}
.stats{margin-top:1.4rem;font:11px var(--mono);color:var(--faint);
     font-variant-numeric:tabular-nums}
.stats .clip{color:#d98c66;font-weight:700}
@media (prefers-reduced-motion:reduce){
  .why,.why.in{animation:none;transition:none}
  button:active{transform:none}
}
@media (max-width:520px){ h1{font-size:17px}
  .paper{padding:1rem}
  input[type=range],.fader{width:100%} }