/* The no-hair test (nohair.js): four lines in the (M, chi) plane, one per
   measured number, each in a soft 68% band, and the IMR remnant where
   they cross. */

#nohair .nh-plot {
  position: absolute;
  inset: 0;
  width: 1920px;
  height: 1080px;
}

/* the four colours: the 220's two numbers warm, the 221's two cool */
#nohair {
  --b0: var(--accent);        /* f_220 */
  --b1: var(--star-mid);      /* tau_220 */
  --b2: #3A6EA5;              /* f_221 */
  --b3: #3E8E7E;              /* tau_221 */
}
:root[data-theme="dark"] #nohair {
  --b2: #8CA3D0;
  --b3: #7FC4B0;
}

.nh-axes rect, .nh-axes line { stroke: var(--hair); stroke-width: 1.5; fill: none; }
.nh-axes text { fill: var(--muted); font: 26px ETbb, Georgia, serif; }

.nh-band .nh-fill { fill-opacity: 0.1; transition: fill-opacity 0.8s ease 0.7s; }
.nh-band .nh-lo, .nh-band .nh-hi {
  fill: none;
  stroke-width: 1.2;
  stroke-opacity: 0.55;
  transition: opacity 0.8s ease 0.7s;
}
/* the line itself draws in (pathLength="1": dashoffset 1 hidden, 0 drawn) */
.nh-band .nh-mid {
  fill: none;
  stroke-width: 5;
  stroke-linecap: round;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset 1.2s ease;
}
.nh-band.shown .nh-mid { stroke-dashoffset: 0; }
.nh-band:not(.shown) .nh-fill { fill-opacity: 0; }
.nh-band:not(.shown) .nh-lo, .nh-band:not(.shown) .nh-hi { opacity: 0; }

.nh-b0 { fill: var(--b0); stroke: var(--b0); }
.nh-b1 { fill: var(--b1); stroke: var(--b1); }
.nh-b2 { fill: var(--b2); stroke: var(--b2); }
.nh-b3 { fill: var(--b3); stroke: var(--b3); }

/* the bands keep their own opacity: the deck's fade would hide the draw */
#nohair .nh-band[data-step]:not(.shown) { opacity: 1; }

/* the remnant from the full signal, and a ring that closes on it */
.nh-imr path { fill: var(--ink); stroke: var(--ink); stroke-width: 2; }
.nh-ring {
  fill: none;
  stroke: var(--ink);
  stroke-width: 3;
  transform-box: fill-box;
  transform-origin: center;
}
.nh-imr.shown .nh-ring { animation: nh-close 1.4s ease-out both; }
@keyframes nh-close {
  from { transform: scale(4); opacity: 0; }
  to   { transform: scale(1); opacity: 1; }
}

/* the key, right: one line per band, arriving with it */
.nh-key {
  position: absolute;
  left: 1340px;
  top: 220px;
  width: 470px;
  font-size: 34px;
  line-height: 1.9;
}
.nh-key [data-step] { transition: opacity 0.6s; }
.nh-key .sw {
  display: inline-block;
  width: 40px;
  height: 6px;
  margin-right: 16px;
  border-radius: 3px;
  vertical-align: middle;
  background: var(--c);
}
.nh-note { font-size: 24px; line-height: 1.4; margin-top: 10px; }
.nh-verdict {
  margin-top: 36px;
  padding-left: 22px;
  border-left: 4px solid var(--ink);
  font-size: 34px;
  line-height: 1.35;
}

.nh-cite { position: absolute; left: 1340px; bottom: 140px; font-size: 22px; }