:root {
  --paper: #f2eee5;
  --paper-2: #e9e3d6;
  --ink: #1c1a16;
  --ink-2: #4c473e;
  --ink-3: #8a8274;
  --rule: #d3cbbb;
  --soul: #b04a24;
  --soul-wash: #f0dccf;
  --none: #4f5b66;
  --none-wash: #dde1e3;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --composer-h: 72px;
  --dock-h: 0px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #14130f;
    --paper-2: #1d1b16;
    --ink: #ebe5d8;
    --ink-2: #bdb5a5;
    --ink-3: #7f786b;
    --rule: #34302a;
    --soul: #e0784b;
    --soul-wash: #3a2219;
    --none: #9eacb8;
    --none-wash: #232a30;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
}
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
button, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--soul); outline-offset: 2px; }

.frame {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 16px;
}
.main {
  max-width: 700px;
  margin: 0 auto;
  padding-bottom: calc(var(--composer-h) + var(--dock-h) + 24px);
}

/* header */
.head { padding: 72px 0 28px; border-bottom: 1px solid var(--rule); }
@keyframes beat { 0%, 100% { transform: scale(1); opacity: .45; } 18% { transform: scale(1.45); opacity: 1; } 36% { transform: scale(1); opacity: .6; } 48% { transform: scale(1.25); opacity: .95; } }
h1 {
  font: 400 clamp(30px, 6vw, 46px)/1.1 var(--serif);
  letter-spacing: -.01em;
  margin: 0 0 20px;
  max-width: 21ch;
  text-wrap: balance;
}
.lede { font-size: 17px; color: var(--ink-2); margin: 0; max-width: 60ch; }
.tally { font: 12px/1.5 var(--mono); color: var(--ink-3); margin: 18px 0 0; min-height: 1.5em; letter-spacing: .02em; }

/* protocol */
.protocol { padding: 28px 0 8px; }
h2 { font: 12px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-2); margin: 0 0 12px; font-weight: 400; }
.note { color: var(--ink-2); font-size: 15px; margin: 0 0 18px; max-width: 60ch; }
.questions { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule); }
.questions li { border-bottom: 1px solid var(--rule); }
.q {
  display: grid; grid-template-columns: 44px 1fr; align-items: baseline; gap: 4px;
  width: 100%; text-align: left; background: none; border: 0; padding: 14px 0;
  font: 18px/1.4 var(--serif);
  transition: background-color .2s;
}
.q:hover { background: var(--paper-2); }
.q .num { font: 12px/1 var(--mono); color: var(--ink-3); letter-spacing: .06em; }
.q .theme { display: block; font: 11px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 6px; }
.q.asked { color: var(--ink-3); }
.q.asked .num::after { content: " asked"; }
.instruction { margin: 18px 0 0; font-size: 14px; color: var(--ink-2); }
.instruction summary { cursor: pointer; font: 12px/1.6 var(--mono); letter-spacing: .04em; color: var(--ink-2); }
.instruction p { font: 13px/1.6 var(--mono); background: var(--paper-2); padding: 12px 14px; margin: 10px 0 0; border-left: 2px solid var(--rule); }
body.started .protocol { display: none; }

/* transcript */
.transcript { padding-top: 8px; }
.turn { padding: 22px 0 6px; animation: fade .5s ease both; }
.turn.subject .who span:first-child { width: 7px; height: 7px; border-radius: 50%; background: var(--soul); opacity: .45; align-self: center; }
body.speaking .turn.subject:last-child .who span:first-child { animation: beat 1.1s ease-in-out infinite; opacity: 1; }
.who { margin: 0 0 8px; font: 11px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); display: flex; gap: 10px; }
.turn.user .said { margin: 0; font-size: 16px; color: var(--ink-2); white-space: pre-wrap; overflow-wrap: anywhere; }
.turn.subject .said { font: 20px/1.6 var(--serif); color: var(--ink); overflow-wrap: anywhere; }
.turn.subject .said p { margin: 0 0 14px; }
.turn.subject .said span.fresh { animation: ink .7s ease both; }
.turn.subject .thought { font: 15px/1.55 var(--serif); color: var(--ink-3); white-space: pre-wrap; overflow-wrap: anywhere; margin: 0 0 18px; padding-left: 14px; border-left: 1px solid var(--rule); }
.turn.subject .thought span.fresh { animation: ink .7s ease both; }
.turn.subject .status { font: 13px/1.5 var(--mono); color: var(--ink-3); }
.turn.subject.waiting .said::after { content: ""; display: inline-block; width: 9px; height: 1.05em; vertical-align: -2px; background: var(--ink-3); animation: blink 1s steps(2) infinite; }
.turn.error .status { color: var(--soul); }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
@keyframes ink { from { opacity: 0; filter: blur(2px); } to { opacity: 1; filter: none; } }
@keyframes blink { 50% { opacity: 0; } }

.next { padding: 6px 0 10px; }
.next button {
  display: block; width: 100%; text-align: left; background: none; border: 1px dashed var(--rule);
  padding: 12px 14px; font: 15px/1.4 var(--serif); color: var(--ink-2); border-radius: 2px;
}
.next button:hover { border-color: var(--ink-3); color: var(--ink); }
.next .num { font: 11px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); display: block; margin-bottom: 6px; }

/* composer */
.composer {
  position: sticky; bottom: 0; z-index: 5;
  display: flex; gap: 10px; align-items: flex-end;
  padding: 12px 0 calc(14px + env(safe-area-inset-bottom));
  background: linear-gradient(to bottom, color-mix(in srgb, var(--paper) 0%, transparent), var(--paper) 14px);
}
.composer textarea {
  flex: 1; resize: none; min-height: 48px; max-height: 160px; padding: 12px 14px;
  background: var(--paper); border: 1px solid var(--ink-3); border-radius: 2px; font-size: 16px; line-height: 1.4;
}
.composer textarea:focus { outline: none; border-color: var(--ink); }
.composer button {
  height: 48px; padding: 0 20px; border: 0; border-radius: 2px; background: var(--ink); color: var(--paper);
  font: 13px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase;
}
.composer button:disabled { opacity: .45; cursor: default; }

/* method */
.method { border-top: 1px solid var(--rule); margin-top: 40px; padding: 28px 0 16px; color: var(--ink-2); font-size: 14px; }
.method h2 { margin-top: 18px; }
.method p { margin: 0 0 12px; max-width: 64ch; }
.method cite { font-style: normal; text-decoration: underline; text-decoration-color: var(--rule); text-underline-offset: 3px; }
.method > summary { display: none; }
body.started .method { margin: 0; padding: 14px 0; border-top: 0; border-bottom: 1px solid var(--rule); }
body.started .method > summary { display: block; cursor: pointer; font: 12px/1.4 var(--mono); letter-spacing: .06em; color: var(--ink-2); }
body.started .method[open] > summary { margin-bottom: 14px; }

/* scale */
.scale-title { margin: 0 0 12px; font: 12px/1.5 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-2); }
.scale-title .hint { display: block; }
.scale-title .hint { text-transform: none; letter-spacing: 0; color: var(--ink-3); white-space: nowrap; }
.pads { display: grid; grid-template-columns: 1fr 120px 1fr; gap: 8px; align-items: stretch; }
.pad {
  position: relative; border: 1px solid var(--rule); border-radius: 2px; background: var(--paper);
  padding: 14px 10px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px;
  touch-action: manipulation; -webkit-tap-highlight-color: transparent; user-select: none; -webkit-user-select: none;
  transition: background-color .12s, border-color .12s, transform .08s;
  overflow: hidden;
}
.pad-word { font: 17px/1.15 var(--serif); white-space: nowrap; }
.pad-count { font: 12px/1 var(--mono); color: var(--ink-3); font-variant-numeric: tabular-nums; }
.pad.soul .pad-word { color: var(--soul); }
.pad.none .pad-word { color: var(--none); }
.pad.soul:hover { border-color: var(--soul); }
.pad.none:hover { border-color: var(--none); }
.pad.hit { transform: scale(.97); }
.pad.soul.hit { background: var(--soul-wash); }
.pad.none.hit { background: var(--none-wash); }
.grain { position: absolute; width: 5px; height: 5px; border-radius: 50%; pointer-events: none; animation: grain .6s ease-out forwards; }
.pad.soul .grain { background: var(--soul); }
.pad.none .grain { background: var(--none); }
@keyframes grain { from { opacity: .9; transform: translateY(0) scale(1); } to { opacity: 0; transform: translateY(-34px) scale(.4); } }

.beam-wrap { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; cursor: pointer; border-radius: 2px; }
.beam { width: 112px; height: 60px; overflow: visible; }
.beam line, .beam path { stroke: var(--ink-2); stroke-width: 1; fill: none; vector-effect: non-scaling-stroke; stroke-linecap: round; }
.beam .pivot { fill: var(--ink); }
.beam .arm { stroke: var(--ink); stroke-width: 1.4; }
#beam-arm { transform-origin: 60px 20px; transition: transform .9s cubic-bezier(.3, 1.6, .5, 1); }
#pan-l, #pan-r { transition: transform .9s cubic-bezier(.3, 1.6, .5, 1); }
.share { font: 11px/1.2 var(--mono); color: var(--ink-3); text-align: center; font-variant-numeric: tabular-nums; }

.everyone { margin-top: 18px; }
.everyone-title { margin: 0 0 8px; font: 12px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-2); }
.trend { width: 100%; height: 110px; display: block; overflow: visible; }
.trend .mid { stroke: var(--rule); stroke-dasharray: 2 4; stroke-width: 1; vector-effect: non-scaling-stroke; }
.trend .frame-line { stroke: var(--rule); stroke-width: 1; vector-effect: non-scaling-stroke; }
.trend .line { fill: none; stroke: var(--ink); stroke-width: 1.4; vector-effect: non-scaling-stroke; stroke-linejoin: round; }
.trend .end { fill: var(--soul); }
.trend-axis { display: flex; justify-content: space-between; margin: 6px 0 0; font: 11px/1 var(--mono); color: var(--ink-3); }
.everyone-note { font-size: 13px; color: var(--ink-2); margin: 10px 0 0; }
.keys { margin: 16px 0 0; font: 11px/1.4 var(--mono); color: var(--ink-3); }
kbd { font: inherit; border: 1px solid var(--rule); padding: 1px 5px; border-radius: 2px; color: var(--ink-2); }

/* phones and narrow windows: the scale docks above the composer, in thumb reach */
@media (max-width: 999px) {
  .scale {
    position: fixed; left: 0; right: 0; bottom: var(--composer-h); z-index: 6;
    background: var(--paper); border-top: 1px solid var(--rule);
    padding: 8px 16px 8px;
    box-shadow: 0 -10px 24px -18px rgba(0, 0, 0, .35);
  }
  .scale-inner { max-width: 700px; margin: 0 auto; display: flex; flex-direction: column; }
  .scale-title, .keys { display: none; }
  .pads { grid-template-columns: 1fr 104px 1fr; }
  .pad { padding: 10px 8px; min-height: 64px; }
  .beam { width: 96px; height: 50px; }
  .everyone { order: -1; margin: 4px 0 12px; display: none; }
  .scale.open .everyone { display: block; }
  .trend { height: 90px; }
  .composer {
    position: fixed; left: 0; right: 0; bottom: 0; padding-left: 16px; padding-right: 16px;
    background: var(--paper);
  }
  .composer > * { max-width: 700px; }
  body:not(.started) .composer { border-top: 1px solid var(--rule); }
  .head { padding-top: 32px; }
  body.typing .scale { display: none; }
}
@media (max-width: 999px) and (min-width: 732px) {
  .composer { padding-left: calc((100vw - 700px) / 2); padding-right: calc((100vw - 700px) / 2); }
}

/* wide screens: the scale is a rail beside the transcript */
@media (min-width: 1000px) {
  .frame { display: grid; grid-template-columns: minmax(0, 700px) 344px; gap: 64px; justify-content: center; }
  .main { margin: 0; }
  body:not(.started) .frame { grid-template-columns: minmax(0, 700px); }
  .scale { position: relative; }
  .scale-inner { position: sticky; top: 40px; padding-top: 48px; }
  .pads { grid-template-columns: 1fr 96px 1fr; }
  .pad { min-height: 112px; }
  .beam-wrap { cursor: default; }
  .beam { width: 100px; height: 54px; }
}

@media (prefers-reduced-motion: reduce) {
  .turn { animation: fadeonly .4s ease both; }
  @keyframes fadeonly { from { opacity: 0; } to { opacity: 1; } }
  .turn.subject .said span.fresh { animation: fadeonly .5s ease both; }
  .grain { animation: grainfade .5s ease-out forwards; }
  @keyframes grainfade { from { opacity: .9; } to { opacity: 0; } }
  #beam-arm, #pan-l, #pan-r { transition: transform .5s ease-out; }
  .pad.hit { transform: none; }
}