:root {
  --bg: #10110f;
  --bg-2: #181a16;
  --line: #2a2c26;
  --ink: #e6e1d4;
  --dim: #8d887b;
  --faint: #5c5950;
  --bone: #e4dcc8;
  --hot: #e07a5f;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-snap-type: y proximity; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "IBM Plex Sans", "Helvetica Neue", sans-serif;
  font-size: 14px;
}

article { max-width: 672px; margin: 0 auto; padding: 56px 22px 40px; scroll-snap-align: start; }
article > header { text-align: center; margin-bottom: 40px; }
article > header:last-child { margin-bottom: 0; }
article > header h1 { margin: 0; font-size: 44px; font-weight: 500; letter-spacing: -0.035em; line-height: 1; }
article > header p { margin: 12px 0 0; color: var(--dim); font-size: 16px; }
article section { margin-top: 32px; padding-left: 20px; border-left: 2px solid var(--hot); color: var(--dim); line-height: 1.65; }
article section .kicker { margin-top: 0; }
article summary { cursor: pointer; }
article summary:hover { color: var(--dim); }
article details:not([open]) summary { margin-bottom: 0; }
article a, body > footer a { color: var(--hot); text-decoration: none; }
article a:hover, body > footer a:hover { text-decoration: underline; }
body > footer { padding: 16px 22px; border-top: 1px solid var(--line); color: var(--faint); font-size: 12px; text-align: center; }

.field {
  display: grid;
  grid-template-columns: 168px 1fr 320px;
  grid-template-rows: auto 1fr;
  height: 100vh;
  border-top: 1px solid var(--line);
  scroll-snap-align: start;
}

.field > header {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 8px 28px;
  padding: 18px 22px 14px;
  border-bottom: 1px solid var(--line);
}
.field > header h1 {
  margin: 0;
  font-size: 34px;
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1;
}
#window {
  margin: 8px 0 0;
  color: var(--dim);
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 12px;
}
.tools { display: flex; align-items: center; gap: 16px; padding-bottom: 2px; }
.site { display: flex; gap: 6px; }
.site a {
  color: var(--dim);
  text-decoration: none;
  border: 1px solid var(--line);
  font: 12px "IBM Plex Mono", ui-monospace, monospace;
  padding: 4px 8px;
}
.site a.on { color: var(--bg); background: var(--bone); border-color: var(--bone); }
.scale-readout { color: var(--bone); font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 12px; white-space: nowrap; }
.modes { display: flex; gap: 6px; }
.modes button {
  background: transparent;
  color: var(--dim);
  border: 1px solid var(--line);
  font: 12px "IBM Plex Mono", ui-monospace, monospace;
  padding: 4px 8px;
  cursor: pointer;
}
.modes button.on { color: var(--bg); background: var(--bone); border-color: var(--bone); }
.pager { align-items: center; }
.pager[hidden] { display: none; }
.pager span { color: var(--dim); font: 12px "IBM Plex Mono", ui-monospace, monospace; white-space: nowrap; }
.modes button:disabled { opacity: 0.35; cursor: default; }
.legend { grid-column: 1 / -1; display: flex; flex-wrap: nowrap; align-items: center; gap: 8px 12px; margin: 2px 0 0; overflow: hidden; white-space: nowrap; }
.legend .legend-name {
  color: var(--faint);
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.legend span { display: flex; align-items: center; gap: 6px; color: var(--dim); font-size: 12px; }
.legend i { width: 9px; height: 9px; display: inline-block; }

.ladder {
  border-right: 1px solid var(--line);
  padding: 16px 0;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: auto;
}
.ladder button {
  appearance: none;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  background: transparent;
  color: var(--faint);
  border: 0;
  border-left: 2px solid transparent;
  text-align: left;
  padding: 8px 14px;
  font: 500 12px/1.3 "IBM Plex Mono", ui-monospace, monospace;
  cursor: pointer;
}
.ladder button small { color: var(--bone); font-size: 11px; font-weight: 400; }
.ladder button.on { color: var(--bg); background: var(--bone); border-left-color: var(--bone); }
.ladder button.on small { color: var(--bg); }
.ladder button.reached { color: var(--ink); background: #24261f; border-left-color: var(--hot); }
.ladder button:hover { color: var(--ink); }
.ladder button.on:hover { color: var(--bg); }

.field main { position: relative; min-width: 0; min-height: 0; overflow: hidden; }
#field { width: 100%; height: 100%; display: block; cursor: crosshair; background: var(--bg); }
#tip {
  position: absolute; pointer-events: none; max-width: 280px; padding: 6px 8px;
  background: var(--bg-2); border: 1px solid var(--line); color: var(--ink); font-size: 12px;
}
#tip[hidden] { display: none; }
#tip strong { display: block; font-weight: 500; }
#tip dl { grid-template-columns: auto auto; gap: 2px 12px; margin-bottom: 4px; }
#tip dt { color: var(--dim); }
#tip span { display: block; color: var(--dim); font-family: "IBM Plex Mono", ui-monospace, monospace; }
.field aside {
  border-left: 1px solid var(--line);
  overflow: auto;
  min-height: 0;
  padding: 16px 16px 28px;
  background: var(--bg-2);
  overscroll-behavior: contain;
}
.kicker {
  margin: 18px 0 8px;
  color: var(--faint);
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
aside section:first-child .kicker { margin-top: 0; }
.field aside h1 { font-size: 22px; font-weight: 500; margin: 0 0 8px; letter-spacing: -0.02em; }
#sel-title.code {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 18px;
  letter-spacing: 0.04em;
}
.share { margin: 0; color: var(--dim); font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 12px; }
.ratio {
  margin: 2px 0 6px;
  color: var(--bone);
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 32px;
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1;
}
.note { margin: 8px 0 0; color: var(--dim); font-size: 13px; line-height: 1.35; }
.note:empty, .ratio:empty { display: none; }
.mix:empty { display: none; }
.mix { margin-top: 12px; }
.mix .fixed {
  margin: 0 0 10px;
  color: var(--bone);
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 12px;
  line-height: 1.4;
}
.mix-facet { margin-bottom: 8px; }
.mix-facet h2 {
  margin: 0 0 4px;
  color: var(--dim);
  font: 11px "IBM Plex Mono", ui-monospace, monospace;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.mix-row {
  display: grid;
  grid-template-columns: 92px 1fr 40px;
  gap: 6px;
  align-items: center;
  margin: 2px 0;
}
.mix-row span:first-child {
  overflow: hidden;
  color: var(--ink);
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 11px;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.mix-bar { height: 6px; background: #141612; }
.mix-bar i { display: block; height: 100%; background: var(--bone); }
.mix-row .pct { color: var(--dim); font: 11px "IBM Plex Mono", ui-monospace, monospace; text-align: right; }
dl { margin: 0; display: grid; grid-template-columns: 92px 1fr; gap: 4px 8px; }
dt { color: var(--faint); font-size: 12px; }
dd { margin: 0; font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 12px; }

#label-form { display: flex; gap: 6px; }
#label-form input {
  flex: 1;
  background: var(--bg);
  color: var(--ink);
  border: 1px solid var(--line);
  padding: 7px 8px;
  font: 13px "IBM Plex Sans", sans-serif;
}
#label-form button, .facet button, .label button {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
  font: 12px "IBM Plex Mono", ui-monospace, monospace;
  cursor: pointer;
}
#label-form button { padding: 0 8px; }
#label-form button:hover, .facet button:hover { border-color: var(--dim); }

#labels { list-style: none; margin: 10px 0 0; padding: 0; }
#labels li { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
#labels .swatch { width: 10px; height: 10px; flex: none; }
#labels .name { flex: 1; cursor: pointer; }
#labels .name:hover { color: var(--bone); }
#labels button { padding: 2px 6px; color: var(--dim); }

.join { display: flex; gap: 4px; margin: 0 0 12px; }
.join button, #reset {
  background: transparent;
  color: var(--dim);
  border: 1px solid var(--line);
  font: 11px "IBM Plex Mono", ui-monospace, monospace;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 8px;
  cursor: pointer;
}
#reset { float: right; padding: 1px 6px; }
#reset:hover { color: var(--ink); border-color: var(--dim); }
.join button.on { color: var(--bg); background: var(--bone); border-color: var(--bone); }
.facet { margin-bottom: 12px; }
.facet h2 {
  margin: 0 0 6px;
  font: 11px "IBM Plex Mono", ui-monospace, monospace;
  font-weight: 400;
  color: var(--dim);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.facet .opts { display: flex; flex-wrap: wrap; gap: 4px; }
.facet button { padding: 3px 6px; color: var(--dim); }
.facet button.on { color: var(--bg); background: var(--bone); border-color: var(--bone); }
.facet.on h2 { color: var(--bone); }
.iden h2.standout {
  margin: 0 0 8px;
  color: var(--bone);
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 32px;
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1;
}
.iden .code {
  margin: 0 0 4px;
  color: var(--bone);
  font: 500 16px "IBM Plex Mono", ui-monospace, monospace;
  letter-spacing: 0.04em;
}
.iden .words { margin: 0 0 8px; color: var(--dim); font-size: 13px; line-height: 1.35; }

body.graph {
  grid-template-columns: 1fr 320px;
  overflow: hidden;
}
#graph { width: 100%; height: 100%; display: block; background: var(--bg); cursor: crosshair; touch-action: none; }
#graph.drag { cursor: grabbing; }
.ramp { width: 88px; height: 9px; display: inline-block; }
.legend i.same-key { width: 18px; height: 2px; background: var(--bone); }
.fork-rows { display: flex; flex-direction: column; gap: 4px; margin: 12px 0 0; }
.fork-rows button, .fork-rows a.fork-row {
  display: grid;
  grid-template-columns: 9px 1fr auto auto;
  gap: 8px;
  align-items: center;
  text-align: left;
  text-decoration: none;
  background: transparent;
  color: var(--dim);
  border: 1px solid var(--line);
  padding: 6px 8px;
  cursor: pointer;
  font: 12px "IBM Plex Mono", ui-monospace, monospace;
}
.fork-rows button.on, .fork-rows a.fork-row.on { color: var(--bg); background: var(--bone); border-color: var(--bone); }
.fork-rows .tx {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 2px;
}
.fork-rows button.same i, .fork-rows a.fork-row.same i { box-shadow: 0 0 0 1px var(--bone); }
.fork-rows button i, .fork-rows a.fork-row i { width: 9px; height: 9px; display: block; }
.fork-rows .role { color: var(--faint); margin-right: 6px; }
.fork-rows button.on .role, .fork-rows a.fork-row.on .role { color: inherit; }
.iden {
  border-left: 1px solid var(--line);
  background: var(--bg-2);
  overflow: auto;
  overscroll-behavior: contain;
  padding: 18px 16px 20px;
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.iden h2 { margin: 0 0 8px; font-size: 22px; font-weight: 500; }
.iden a { color: var(--dim); font: 12px "IBM Plex Mono", ui-monospace, monospace; }
.iden dl { margin: 12px 0 0; }
.meter { height: 8px; background: #141612; border: 1px solid var(--line); margin: 10px 0; }
.meter i { display: block; height: 100%; background: var(--bone); }