/* ============================================================
   RELAX BUTTON — "Nightfall" design system
   One ember in the dark. The button is the product.
   Palette: night ink / warm ember / moonlit parchment.
   No frameworks. No webfonts. No images required to render.
   ============================================================ */

:root{
  --night:      #0a0e16;
  --night-2:    #0e1420;
  --night-3:    #131a29;
  --ember:      #f0a35e;
  --ember-hi:   #ffd9a8;
  --ember-deep: #b35f24;
  --ember-dark: #7a3d14;
  --moon:       #e9e2d2;
  --moon-dim:   #a9a598;
  --dim:        #7b8494;
  --hairline:   rgba(233,226,210,.14);
  --hairline-soft: rgba(233,226,210,.07);
  --serif: "Iowan Old Style","Palatino Linotype",Palatino,Georgia,"Times New Roman",serif;
  --sans: ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono: ui-monospace,"Cascadia Mono","SF Mono",Consolas,Menlo,monospace;
  --halo: 0;            /* 0..1 sound-reactive glow, set from JS */
  --breath-scale: 1;    /* orb scale target, set from JS */
  --breath-secs: 4s;    /* current phase duration, set from JS */
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion: reduce){ html{scroll-behavior:auto} }

body{
  background:var(--night);
  color:var(--moon);
  font-family:var(--serif);
  font-size:17px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  min-height:100vh;
}

::selection{background:var(--ember-deep);color:var(--moon)}

a{color:var(--ember);text-decoration:none;border-bottom:1px solid rgba(240,163,94,.35);transition:border-color .3s,color .3s}
a:hover{color:var(--ember-hi);border-bottom-color:var(--ember-hi)}

button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}

:focus-visible{outline:2px solid var(--ember);outline-offset:3px;border-radius:2px}

.skip{
  position:absolute;left:-9999px;top:0;z-index:50;
  background:var(--night-3);color:var(--moon);padding:10px 18px;border:1px solid var(--hairline);
  font-family:var(--sans);font-size:13px;
}
.skip:focus{left:12px;top:12px}
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ---------- micro-label voice (small caps, letterspaced) ---------- */
.micro{
  font-family:var(--sans);
  font-size:11px;
  letter-spacing:.32em;
  text-transform:uppercase;
  color:var(--moon-dim);
  font-weight:500;
}

/* ---------- page chrome ---------- */
.chrome{
  position:relative;
  display:flex;justify-content:space-between;align-items:center;
  padding:26px clamp(20px,5vw,54px) 0;
  z-index:5;
}
.wordmark{
  display:flex;align-items:center;gap:12px;
  border:0;color:var(--moon);
}
.wordmark:hover{color:var(--moon)}
.wordmark .dot{
  width:11px;height:11px;border-radius:50%;
  background:radial-gradient(circle at 35% 30%,var(--ember-hi),var(--ember) 55%,var(--ember-deep));
  box-shadow:0 0 10px rgba(240,163,94,.7);
  flex:none;
}
.wordmark span{
  font-family:var(--sans);font-size:12px;font-weight:600;
  letter-spacing:.34em;text-transform:uppercase;
}
.nav{display:flex;gap:clamp(16px,3vw,34px)}
.nav a{
  border:0;
  font-family:var(--sans);font-size:11px;letter-spacing:.26em;text-transform:uppercase;
  color:var(--moon-dim);padding:6px 2px;
}
.nav a:hover,.nav a[aria-current]{color:var(--ember)}

/* ============================================================
   THE STAGE — orb, dial, breath
   ============================================================ */
.stage{
  position:relative;
  min-height:calc(100vh - 64px);
  min-height:calc(100svh - 64px);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:24px 20px 40px;
  overflow:hidden;
}
#dust{
  position:absolute;inset:0;width:100%;height:100%;
  pointer-events:none;
}
.stage::before{ /* vignette */
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(ellipse 90% 70% at 50% 46%,transparent 30%,rgba(4,6,11,.55) 100%);
}
.stage::after{ /* faint grain */
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.6'/%3E%3C/svg%3E");
}

.orb-wrap{
  position:relative;
  width:min(74vw,420px);
  aspect-ratio:1;
  display:flex;align-items:center;justify-content:center;
  z-index:2;
}

/* halo — sound-reactive warm light behind everything */
.halo{
  position:absolute;inset:-46%;
  border-radius:50%;
  background:radial-gradient(circle,rgba(240,163,94,.34) 0%,rgba(240,163,94,.10) 38%,transparent 68%);
  opacity:calc(.5 + var(--halo) * .5);
  transform:scale(calc(.92 + var(--halo) * .16));
  transition:opacity .45s ease,transform .45s ease;
  pointer-events:none;
}
.stage.idle .halo{opacity:.34;transform:scale(.88)}

/* the tick dial — the button IS the clock */
.dial{
  position:absolute;inset:0;width:100%;height:100%;
  pointer-events:none;
  transform:rotate(-90deg);
}
.dial .ticks{stroke:rgba(233,226,210,.22);stroke-width:1}
.dial .ticks-major{stroke:rgba(233,226,210,.4);stroke-width:1.6}
.dial .arc-track{fill:none;stroke:rgba(233,226,210,.10);stroke-width:2}
.dial .arc{
  fill:none;stroke:var(--ember);stroke-width:2.5;stroke-linecap:round;
  filter:drop-shadow(0 0 4px rgba(240,163,94,.8));
  transition:stroke-dashoffset .6s linear,opacity .8s ease;
}

/* the orb */
.orb{
  position:relative;
  width:66%;aspect-ratio:1;border-radius:50%;
  transform:scale(var(--breath-scale));
  transition:transform var(--breath-secs) cubic-bezier(.42,0,.35,1);
  will-change:transform;
}
.orb-core{
  position:absolute;inset:0;border-radius:50%;
  background:
    radial-gradient(circle at 36% 30%,var(--ember-hi) 0%,var(--ember) 34%,var(--ember-deep) 72%,var(--ember-dark) 100%);
  box-shadow:
    inset 0 -14px 34px rgba(58,26,6,.55),
    inset 0 10px 26px rgba(255,225,180,.35),
    0 0 42px rgba(240,163,94,calc(.30 + var(--halo)*.34)),
    0 0 130px rgba(240,163,94,calc(.14 + var(--halo)*.20)),
    0 24px 70px rgba(0,0,0,.55);
  transition:box-shadow .5s ease,filter 1.2s ease;
}
.orb:hover .orb-core{filter:brightness(1.06)}
.orb:active{
  transform:scale(calc(var(--breath-scale) * .98));
  transition:transform .14s ease; /* instant tactile press-in, overrides breath pace */
}
.stage.idle .orb .orb-core{animation:idlebreathe 7s ease-in-out infinite}
@keyframes idlebreathe{
  0%,100%{filter:brightness(.97);transform:scale(1)}
  50%{filter:brightness(1.07);transform:scale(1.014)}
}

/* one-shot press confirmation ring */
.ripple{
  position:absolute;inset:16%;
  border-radius:50%;
  border:1px solid rgba(240,163,94,.75);
  pointer-events:none;
  animation:rippleout 1.6s cubic-bezier(.2,.6,.35,1) forwards;
}
@keyframes rippleout{
  from{transform:scale(.72);opacity:.9}
  to{transform:scale(1.32);opacity:0}
}
@media (prefers-reduced-motion: reduce){
  .stage.idle .orb .orb-core{animation:none}
  .orb{transition:none}
  .halo{transition:opacity .45s ease;transform:none}
}

.orb-label{
  position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  color:#3a1c07;
  font-family:var(--sans);font-weight:600;
  font-size:clamp(12px,2.4vw,14px);
  letter-spacing:.3em;text-transform:uppercase;text-indent:.3em;
  text-align:center;line-height:2;
  text-shadow:0 1px 0 rgba(255,220,170,.35);
  transition:opacity .9s ease;
}
.stage.running .orb-label{opacity:0}

/* breath word under the orb */
.breath-line{
  margin-top:clamp(26px,4.5vh,44px);
  min-height:66px;
  display:flex;flex-direction:column;align-items:center;gap:9px;
  text-align:center;z-index:2;
}
.breath-word{
  font-family:var(--serif);font-style:italic;
  font-size:clamp(21px,3.4vw,27px);
  color:var(--moon);
  opacity:0;transform:translateY(4px);
  transition:opacity 1.1s ease,transform 1.1s ease;
}
.breath-word.on{opacity:.94;transform:none}
.breath-count{
  font-family:var(--mono);font-size:12px;letter-spacing:.42em;text-indent:.42em;
  color:var(--moon-dim);
  opacity:0;transition:opacity 1.1s ease;
}
.breath-count.on{opacity:.75}
.stage-hint{
  font-family:var(--serif);font-style:italic;font-size:clamp(15px,2.4vw,17px);
  color:var(--moon-dim);
  transition:opacity 1s ease;
}
.stage.running .stage-hint{opacity:0}
@media (prefers-reduced-motion: reduce){
  .breath-word,.breath-count{transition:opacity .4s ease}
  .breath-word{transform:none}
}

/* ============================================================
   CONSOLE — the quiet control plate
   ============================================================ */
.console{
  position:relative;z-index:3;
  width:min(920px,94vw);
  margin:clamp(10px,3vh,26px) auto 0;
  display:flex;flex-wrap:wrap;justify-content:center;
  gap:22px clamp(22px,4vw,52px);
  padding:20px clamp(14px,3vw,30px) 6px;
  border-top:1px solid var(--hairline-soft);
  transition:opacity 1.4s ease;
}
.stage.running .console{opacity:.32}
.stage.running .console:hover,
.stage.running .console:focus-within{opacity:1}

.cgroup{display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.cgroup > .micro{font-size:10px;color:var(--dim);letter-spacing:.3em}
.chips{display:flex;flex-wrap:wrap;gap:7px}
.chip{
  font-family:var(--sans);font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--moon-dim);
  padding:7px 13px;border:1px solid var(--hairline);border-radius:2px;
  background:rgba(233,226,210,.02);
  transition:color .3s,border-color .3s,background .3s,box-shadow .3s;
}
.chip:hover{color:var(--moon);border-color:rgba(233,226,210,.32)}
.chip[aria-pressed="true"]{
  color:var(--ember-hi);
  border-color:rgba(240,163,94,.65);
  background:rgba(240,163,94,.07);
  box-shadow:0 0 14px rgba(240,163,94,.12),inset 0 0 10px rgba(240,163,94,.05);
}

.vol{display:flex;align-items:center;gap:12px;height:31px}
input[type=range]{
  -webkit-appearance:none;appearance:none;
  width:130px;height:2px;border-radius:1px;
  background:linear-gradient(to right,var(--ember) 0%,var(--ember) var(--fill,72%),rgba(233,226,210,.18) var(--fill,72%));
}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;appearance:none;
  width:14px;height:14px;border-radius:50%;
  background:radial-gradient(circle at 35% 30%,var(--ember-hi),var(--ember) 60%,var(--ember-deep));
  box-shadow:0 0 8px rgba(240,163,94,.6);
  cursor:pointer;
}
input[type=range]::-moz-range-thumb{
  width:14px;height:14px;border-radius:50%;border:0;
  background:radial-gradient(circle at 35% 30%,var(--ember-hi),var(--ember) 60%,var(--ember-deep));
  box-shadow:0 0 8px rgba(240,163,94,.6);
  cursor:pointer;
}
input[type=range]::-moz-range-track{height:2px;background:rgba(233,226,210,.18)}
input[type=range]::-moz-range-progress{height:2px;background:var(--ember)}

/* keyboard hint */
.kbd-hint{
  width:100%;text-align:center;margin-top:2px;
  font-family:var(--sans);font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--dim);
}
.kbd-hint kbd{
  font-family:var(--mono);font-size:10px;
  border:1px solid var(--hairline);border-radius:3px;padding:1.5px 6px;margin:0 3px;
  color:var(--moon-dim);
}
@media (pointer:coarse){ .kbd-hint{display:none} }

/* ============================================================
   EDITORIAL SECTIONS (below the fold + subpages)
   ============================================================ */
.paper{
  position:relative;
  background:linear-gradient(var(--night-2),var(--night));
  border-top:1px solid var(--hairline-soft);
}
.sect{
  max-width:880px;margin:0 auto;
  padding:clamp(64px,10vh,110px) clamp(22px,5vw,40px);
}
.sect + .sect{border-top:1px solid var(--hairline-soft)}

h1,h2,h3{font-family:var(--serif);font-weight:500;line-height:1.22;color:var(--moon)}
h2.display{font-size:clamp(26px,4.2vw,36px);margin-bottom:18px;letter-spacing:-.01em}

.trio{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(24px,4vw,48px);margin-top:34px}
@media (max-width:680px){.trio{grid-template-columns:1fr}}
.trio h3{font-size:19px;margin:12px 0 8px;font-style:italic}
.trio p{font-size:15.5px;color:var(--moon-dim);line-height:1.7}
.trio .micro{color:var(--ember);letter-spacing:.26em;font-size:10px}

.prose{font-size:clamp(16.5px,2vw,18px);line-height:1.78;color:var(--moon-dim);max-width:64ch}
.prose strong{color:var(--moon);font-weight:600}
.prose p+p{margin-top:1.15em}
.prose em{color:var(--moon)}

/* FAQ */
.faq{margin-top:8px}
.faq details{border-top:1px solid var(--hairline-soft);padding:4px 0}
.faq details:last-child{border-bottom:1px solid var(--hairline-soft)}
.faq summary{
  cursor:pointer;list-style:none;
  display:flex;justify-content:space-between;align-items:baseline;gap:20px;
  padding:19px 2px;
  font-size:clamp(17px,2.4vw,19.5px);color:var(--moon);
  transition:color .3s;
}
.faq summary:hover{color:var(--ember-hi)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--mono);color:var(--ember);font-size:17px;flex:none;transition:transform .3s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .a{padding:0 2px 22px;font-size:16px;line-height:1.75;color:var(--moon-dim);max-width:62ch}
@media (prefers-reduced-motion: reduce){
  .faq summary::after{transition:none}
}

/* blog list rows */
.rows{display:flex;flex-direction:column}
.row{
  display:block;border:0;border-top:1px solid var(--hairline-soft);
  padding:26px 2px;color:inherit;
  transition:background .35s,padding-left .35s;
}
.row:last-child{border-bottom:1px solid var(--hairline-soft)}
.row:hover{background:rgba(240,163,94,.03);padding-left:10px;color:inherit}
.row .micro{font-size:10px;letter-spacing:.28em;color:var(--ember)}
.row h3{font-size:clamp(19px,3vw,23px);margin:9px 0 7px;transition:color .3s}
.row:hover h3{color:var(--ember-hi)}
.row p{font-size:15.5px;color:var(--moon-dim);max-width:60ch;line-height:1.65}
@media (prefers-reduced-motion: reduce){
  .row{transition:none}
}

/* ============================================================
   ARTICLE / SUBPAGE LAYOUT
   ============================================================ */
.pagebody{background:linear-gradient(180deg,var(--night-2) 0,var(--night) 420px)}
.article-head{
  max-width:760px;margin:0 auto;
  padding:clamp(52px,9vh,92px) clamp(22px,5vw,40px) 0;
}
.article-head .meta{display:flex;flex-wrap:wrap;gap:8px 18px;align-items:baseline;margin-bottom:24px}
.article-head .meta .micro{font-size:10px}
.article-head .meta .sep{color:var(--dim);font-family:var(--mono);font-size:10px}
.article-head h1{
  font-size:clamp(30px,5.2vw,44px);letter-spacing:-.015em;line-height:1.14;
  margin-bottom:20px;
}
.article-head .dek{
  font-family:var(--serif);font-style:italic;
  font-size:clamp(17px,2.6vw,20px);color:var(--moon-dim);line-height:1.6;max-width:56ch;
}
.article{
  max-width:760px;margin:0 auto;
  padding:clamp(36px,6vh,56px) clamp(22px,5vw,40px) clamp(70px,10vh,110px);
}
.article > * + *{margin-top:1.2em}
.article p,.article li{
  font-size:clamp(17px,2.1vw,18.5px);line-height:1.8;color:var(--moon-dim);
}
.article strong{color:var(--moon);font-weight:600}
.article em{color:var(--moon)}
.article h2{
  font-size:clamp(21px,3.2vw,26px);margin-top:2em;
  padding-top:1.4em;border-top:1px solid var(--hairline-soft);
}
.article h3{font-size:clamp(18px,2.6vw,21px);margin-top:1.8em;font-style:italic}
.article ul,.article ol{padding-left:1.3em}
.article li+li{margin-top:.55em}
.article li::marker{color:var(--ember)}
.article blockquote{
  border-left:2px solid var(--ember);padding:6px 0 6px 22px;margin-top:1.6em;
  font-style:italic;color:var(--moon);font-size:clamp(18px,2.4vw,20px);line-height:1.65;
}
.article .note{
  margin-top:2.4em;padding:16px 20px;
  border:1px solid var(--hairline-soft);border-left:2px solid var(--ember-deep);
  font-size:14.5px;line-height:1.65;color:var(--moon-dim);
  font-family:var(--sans);
}
.article .cta{
  margin-top:2.6em;padding-top:2em;border-top:1px solid var(--hairline-soft);
  display:flex;flex-wrap:wrap;align-items:center;gap:18px;
}
.btn-ember{
  display:inline-flex;align-items:center;gap:12px;
  border:1px solid rgba(240,163,94,.5);border-radius:999px;
  padding:12px 24px;color:var(--ember-hi);
  font-family:var(--sans);font-size:12px;letter-spacing:.24em;text-transform:uppercase;
  transition:background .35s,box-shadow .35s,border-color .35s;
}
.btn-ember .dot{
  width:9px;height:9px;border-radius:50%;flex:none;
  background:radial-gradient(circle at 35% 30%,var(--ember-hi),var(--ember) 55%,var(--ember-deep));
  box-shadow:0 0 8px rgba(240,163,94,.8);
}
.btn-ember:hover{
  background:rgba(240,163,94,.08);color:var(--ember-hi);
  border-color:rgba(240,163,94,.85);
  box-shadow:0 0 24px rgba(240,163,94,.15);
}
.cta .aside{font-style:italic;font-size:15px;color:var(--dim)}

/* prev / next article footer */
.article-next{
  max-width:760px;margin:0 auto;
  padding:0 clamp(22px,5vw,40px) clamp(60px,9vh,90px);
}
.article-next .row{padding:22px 2px}

/* ============================================================
   FOOTER
   ============================================================ */
footer{
  border-top:1px solid var(--hairline-soft);
  background:var(--night);
}
.foot{
  max-width:880px;margin:0 auto;
  padding:clamp(44px,7vh,64px) clamp(22px,5vw,40px) 40px;
  display:flex;flex-direction:column;gap:30px;
}
.foot-cols{display:flex;flex-wrap:wrap;gap:36px clamp(40px,7vw,90px)}
.foot-col{display:flex;flex-direction:column;gap:11px;min-width:150px}
.foot-col .micro{font-size:10px;margin-bottom:4px;color:var(--dim)}
.foot-col a{border:0;color:var(--moon-dim);font-size:14.5px;font-family:var(--sans)}
.foot-col a:hover{color:var(--ember)}
.foot-brand{max-width:34ch;display:flex;flex-direction:column;gap:12px}
.foot-brand p{font-size:14px;color:var(--dim);line-height:1.65;font-family:var(--sans)}
.foot-legal{
  display:flex;flex-wrap:wrap;gap:8px 26px;align-items:baseline;
  padding-top:24px;border-top:1px solid var(--hairline-soft);
}
.foot-legal p{font-family:var(--sans);font-size:12px;color:var(--dim)}
.foot-legal a{color:var(--moon-dim);border-bottom-color:rgba(233,226,210,.25);font-weight:600}
.foot-legal a:hover{color:var(--ember)}
.foot-legal .disclaim{flex-basis:100%;font-size:11.5px;color:var(--dim);line-height:1.6;max-width:72ch}

/* ============================================================
   404
   ============================================================ */
.lost{
  min-height:calc(100vh - 70px);min-height:calc(100svh - 70px);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:40px 22px;gap:18px;
}
.lost .glyph{
  width:74px;height:74px;border-radius:50%;
  background:radial-gradient(circle at 36% 30%,var(--ember-hi),var(--ember) 40%,var(--ember-deep) 80%);
  box-shadow:0 0 50px rgba(240,163,94,.35);
  opacity:.9;margin-bottom:10px;
}
.lost h1{font-size:clamp(26px,5vw,36px)}
.lost p{color:var(--moon-dim);font-style:italic;max-width:44ch}

/* ============================================================
   utilities
   ============================================================ */
.center{text-align:center}
.mt-lg{margin-top:clamp(34px,5vh,50px)}
noscript .nojs{
  display:block;max-width:560px;margin:30px auto;padding:18px 22px;
  border:1px solid var(--hairline);font-family:var(--sans);font-size:14px;
  color:var(--moon-dim);text-align:center;
}

@media (max-width:560px){
  .chrome{padding-top:20px}
  .nav{gap:14px}
  .nav a{letter-spacing:.18em;font-size:10.5px}
  .wordmark span{letter-spacing:.24em;font-size:11px}
  .console{gap:18px 26px}
  .stage{min-height:calc(100svh - 58px)}
}

@media print{
  body{background:#fff;color:#111}
  .stage,.console,.chrome,footer,#dust{display:none}
  .article p,.article li{color:#222}
}