/* The Time Crystal Shelf: generated by coherence-lab/time-crystals/build_site.py from time-crystals.html.
   Edit the source page there, not this file. Fonts come from /css/tokens.css (self-hosted). */
/* Layout: a field explainer on bark. Masthead, then four instruments on one
   shelf (crystal | impostor, spectrum, pendula, phase rig), then the boundary.
   Single committed dark register: no light theme, every colour explicit. */
:root{
  color-scheme:dark;
  --bark:#1c1510; --bark-2:#241b13; --panel:#2b2117; --panel-2:#332719;
  --line:#4a3b28; --grid:#382b1d;
  --parchment:#ece1cc; --parchment-dim:#b8a98c; --ink-label:#9a8e76; --faint:#8f8069;
  --ember:#e8833a;            /* the ONE accent: the crystal */
  --slate:#8fa3ad;            /* semantic: the impostor / exact guides */
  --brass:#c9a86a;            /* semantic: the viewer's own runs */
  --clay:#c4744a;             /* semantic: a pendulum that slipped its beat */
  --moss:#8aa86b; --ash:#6f6557;
  --serif:'Fraunces',Georgia,'Times New Roman',serif;
  --mono:'JetBrains Mono',ui-monospace,Consolas,monospace;
}
/* generic element rules are scoped to .tc so they never restyle a host page's chrome */
.tc,.tc *{box-sizing:border-box;margin:0}
html{background:var(--bark)}
body{background:var(--bark);color:var(--parchment);font-family:var(--serif);font-weight:370;
  font-size:17px;line-height:1.58;overflow-x:hidden}
h1,h2,h3{text-wrap:balance} p{text-wrap:pretty}
.tc a{color:var(--parchment);text-decoration-color:var(--line);text-underline-offset:3px}
.tc a:hover{text-decoration-color:var(--ember)}

/* atmosphere: grain + lamplight + an engineering grid under the instruments */
body::before{content:'';position:fixed;inset:0;pointer-events:none;z-index:40;opacity:.3;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.05 0'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E")}
.lamplight{position:fixed;inset:0;pointer-events:none;z-index:0;
  background:radial-gradient(ellipse 70% 38% at 50% -6%,rgba(232,166,74,.15),transparent 70%),
             radial-gradient(ellipse 45% 30% at 10% 108%,rgba(143,163,173,.06),transparent 70%)}

.wrap{position:relative;z-index:2;max-width:1120px;margin:0 auto;padding-inline:clamp(16px,5vw,56px);padding-block:8vh 10vh}
.prose{max-width:66ch}

/* masthead */
.eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.38em;text-transform:uppercase;color:var(--brass);
  display:flex;align-items:center;gap:12px;margin-bottom:22px}
.eyebrow::after{content:'';flex:1;height:1px;background:var(--line)}
.tc h1{font-size:clamp(40px,7.2vw,92px);font-style:italic;font-weight:400;line-height:1;letter-spacing:-.015em;
  font-variation-settings:'opsz' 144;max-width:15ch}
.lede{font-style:italic;color:var(--parchment-dim);max-width:58ch;margin-top:22px;font-size:19px}

/* the metronome: drum lights every kick, crystal lights on its own beat (live data) */
.metro{display:flex;flex-wrap:wrap;gap:22px;margin-top:30px;font-family:var(--mono);font-size:10.5px;
  letter-spacing:.2em;text-transform:uppercase;color:var(--ink-label);align-items:center}
.metro span{display:inline-flex;align-items:center;gap:9px}
.pip{width:12px;height:12px;border-radius:50%;background:var(--panel-2);border:1px solid var(--line);
  transition:background .12s ease-out,box-shadow .12s ease-out}
.pip.drum.on{background:var(--parchment-dim)}
.pip.cry.on{background:var(--ember);box-shadow:0 0 0 3px rgba(232,131,58,.25)}
.metro b{font-weight:500;color:var(--parchment);letter-spacing:.08em}

/* live stat strip */
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-top:38px;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding-block:18px}
.stat b{display:block;font-family:var(--mono);font-weight:600;font-size:clamp(20px,2.6vw,28px);color:var(--parchment);
  letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.stat b.em{color:var(--ember)} .stat b.sl{color:var(--slate)}
.stat>span{display:block;font-family:var(--mono);font-size:9.5px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--ink-label);margin-top:4px;line-height:1.5}

.tc section{margin-top:76px}
.sec-head{display:flex;align-items:baseline;gap:16px;margin-bottom:10px;flex-wrap:wrap}
.sec-num{font-family:var(--mono);font-size:12px;color:var(--brass);letter-spacing:.3em}
.tc h2{font-style:italic;font-weight:420;font-size:clamp(24px,3vw,31px);line-height:1.2}
.blurb{font-style:italic;color:var(--parchment-dim);max-width:66ch;margin-bottom:18px}
.prose p+p{margin-top:14px}
.cite{font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;color:var(--ink-label)}

/* instrument frames */
.bench{background:var(--panel);border:1px solid var(--grid);padding:18px 18px 16px;position:relative;
  background-image:linear-gradient(rgba(74,59,40,.18) 1px,transparent 1px),linear-gradient(90deg,rgba(74,59,40,.18) 1px,transparent 1px);
  background-size:40px 40px}
.bracketed::before,.bracketed::after{content:'';position:absolute;width:9px;height:9px;opacity:.55;pointer-events:none}
.bracketed::before{top:-1px;left:-1px;border-top:1px solid var(--ember);border-left:1px solid var(--ember)}
.bracketed::after{bottom:-1px;right:-1px;border-bottom:1px solid var(--ember);border-right:1px solid var(--ember)}
.twin{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:16px}
.col{min-width:0;background:rgba(28,21,16,.55);border:1px solid var(--grid);border-top:3px solid var(--ember);padding:12px 12px 10px}
.col.imp{border-top-color:var(--slate)}
.col-head{display:flex;justify-content:space-between;align-items:baseline;gap:10px;flex-wrap:wrap;margin-bottom:4px}
.col-head h3{font-style:italic;font-weight:440;font-size:19px}
.badge{font-family:var(--mono);font-size:9px;letter-spacing:.18em;text-transform:uppercase;padding:2px 7px;
  border:1px solid currentColor;border-radius:3px;white-space:nowrap}
.badge.meas{color:var(--moss)} .badge.pub{color:var(--slate)} .badge.size{color:var(--ink-label)}
.badges{display:flex;gap:6px;flex-wrap:wrap}
.cap{font-family:var(--mono);font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-label);
  margin:8px 0 3px;display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap}
.cap i{font-style:normal;color:var(--parchment-dim)}
.g{text-transform:none;letter-spacing:.04em}
.tc canvas{display:block;width:100%;max-width:100%}
.readout{font-family:var(--mono);font-size:11px;color:var(--parchment-dim);margin-top:8px;font-variant-numeric:tabular-nums;
  display:flex;gap:14px;flex-wrap:wrap}
.readout b{color:var(--parchment);font-weight:500}

/* controls */
.controls{display:flex;flex-wrap:wrap;gap:14px 26px;align-items:flex-end;margin-top:14px;padding-top:14px;border-top:1px solid var(--grid)}
.ctl{display:flex;flex-direction:column;gap:5px;min-width:150px;flex:1 1 170px}
.ctl label,.ctl-head{font-family:var(--mono);font-size:9.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-label)}
.ctl-head{display:flex;justify-content:space-between;align-items:baseline;gap:8px}
.ctl-head output{color:var(--parchment);letter-spacing:.04em;font-variant-numeric:tabular-nums}
.tc input[type=range]{width:100%;accent-color:var(--ember)}
.tc select{font-family:var(--mono);font-size:11px;background:var(--bark-2);color:var(--parchment);border:1px solid var(--line);padding:5px 6px}
.btns{display:flex;gap:8px;flex-wrap:wrap}
.tc button{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;cursor:pointer;
  background:var(--bark-2);color:var(--parchment);border:1px solid var(--line);padding:8px 12px;border-radius:3px;
  box-shadow:0 2px 0 #120d09;transition:transform .12s ease-out,border-color .12s}
.tc button:hover{border-color:var(--ember)}
.tc button:active{transform:translateY(2px);box-shadow:none}
.tc button.primary{border-color:var(--ember);color:var(--ember)}
.tc :focus-visible{outline:2px solid var(--ember);outline-offset:2px}

.legend{display:flex;flex-wrap:wrap;gap:6px 18px;font-family:var(--mono);font-size:10px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--ink-label);margin-top:8px}
.legend span{display:inline-flex;align-items:center;gap:7px}
.sw{width:14px;height:3px;display:inline-block;background:var(--ember)}
.sw.sl{background:var(--slate)} .sw.dash{background:repeating-linear-gradient(90deg,var(--slate) 0 4px,transparent 4px 7px)}
.sw.dot{width:8px;height:8px;border-radius:50%} .sw.ring{width:9px;height:9px;border-radius:50%;background:none;border:2px solid var(--brass)}
.sw.hol{width:9px;height:9px;border-radius:50%;background:none;border:1.5px solid var(--parchment-dim)}
.sw.pa{background:var(--parchment)} .sw.cl{background:var(--clay)}

/* fences + boundary */
.fence{border:1px solid rgba(232,131,58,.35);background:var(--bark-2);padding:12px 16px;margin-top:14px;
  font-family:var(--mono);font-size:10.5px;line-height:1.9;letter-spacing:.04em;color:var(--parchment-dim)}
.fence .k{color:var(--brass);letter-spacing:.18em}
.boundary{border-left:3px solid var(--slate);background:var(--bark-2);padding:20px 24px;margin-top:20px}
.boundary .k{font-family:var(--mono);font-size:10.5px;letter-spacing:.3em;color:var(--slate);margin-bottom:10px}
.boundary li{color:var(--parchment-dim);font-size:15.5px;margin-top:9px;max-width:72ch}
.boundary ul{padding-left:18px}
.boundary li b{color:var(--parchment);font-weight:500}

.tc footer{border-top:1px solid var(--line);margin-top:84px;padding-top:26px}
.contract{font-family:var(--mono);font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-label);line-height:2.3}
.contract code{font-family:var(--mono);color:var(--ember);background:rgba(232,131,58,.1);padding:1px 5px;border-radius:3px;letter-spacing:.04em;text-transform:none}
.signoff{font-style:italic;color:var(--faint);font-size:14px;margin-top:14px}

@media (max-width:820px){
  .twin{grid-template-columns:minmax(0,1fr)}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}