/* Layout and type after Tufte CSS (https://edwardtufte.github.io/tufte-css/):
   a 55% text column, notes in the right margin, ET Book. */

@font-face {
  font-family: "et-book";
  src: url("fonts/et-book-roman-line-figures.woff") format("woff");
  font-weight: normal; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "et-book";
  src: url("fonts/et-book-display-italic-old-style-figures.woff") format("woff");
  font-weight: normal; font-style: italic; font-display: swap;
}
@font-face {
  font-family: "et-book";
  src: url("fonts/et-book-bold-line-figures.woff") format("woff");
  font-weight: bold; font-style: normal; font-display: swap;
}

:root {
  --bg: #fffff8;
  --ink: #111111;
  --muted: #6e6c66;
  --faint: #d9d7cc;
  --band: rgba(17, 17, 17, 0.10);
  --accent: #a3201a;
  --accent-soft: rgba(163, 32, 26, 0.10);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #161614;
    --ink: #e6e4dc;
    --muted: #9b998f;
    --faint: #3a3935;
    --band: rgba(230, 228, 220, 0.13);
    --accent: #e8695e;
    --accent-soft: rgba(232, 105, 94, 0.16);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #161614;
  --ink: #e6e4dc;
  --muted: #9b998f;
  --faint: #3a3935;
  --band: rgba(230, 228, 220, 0.13);
  --accent: #e8695e;
  --accent-soft: rgba(232, 105, 94, 0.16);
  color-scheme: dark;
}

html { font-size: 15px; -webkit-text-size-adjust: 100%; }
* { box-sizing: border-box; }

body {
  width: 87.5%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem 0 4rem 12.5%;
  font-family: et-book, Palatino, "Palatino Linotype", "Book Antiqua", Georgia, serif;
  background: var(--bg);
  color: var(--ink);
  counter-reset: sidenote-counter;
}

h1 { font-weight: 400; font-size: 3.2rem; line-height: 1; margin: 0.5rem 0 1.5rem; }
h2 { font-style: italic; font-weight: 400; font-size: 2.2rem; line-height: 1; margin: 3.5rem 0 1.4rem; }
h3 { font-style: italic; font-weight: 400; font-size: 1.7rem; line-height: 1; margin: 2.5rem 0 1.2rem; }
.lede { font-size: 1.6rem; line-height: 2.2rem; }
.subtitle { font-style: italic; font-size: 1.8rem; line-height: 1.2; margin-top: -1rem; }

p, ol, ul { font-size: 1.4rem; line-height: 2rem; }
p { margin: 1.4rem 0; padding-right: 0; vertical-align: baseline; }
section > p, section > ol, section > ul, footer > p { width: 55%; }
.main { width: 55%; }

a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 0.15em; }
a:hover { color: var(--accent); }
code, kbd { font-family: Consolas, "Liberation Mono", Menlo, monospace; font-size: 1.0rem; line-height: 1.42; }
kbd { border: 1px solid var(--faint); padding: 0 0.3em; }

.marginnote {
  float: right; clear: right;
  margin-right: -60%; width: 50%;
  margin-top: 0.3rem; margin-bottom: 0;
  font-size: 1.1rem; line-height: 1.3; vertical-align: baseline; position: relative;
  color: var(--ink);
}
.marginnote code { font-size: 0.9rem; }

figure { margin: 0 0 2rem; padding: 0; }
.chart svg { display: block; overflow: visible; font-family: et-book, Palatino, Georgia, serif; }
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }

/* chart marks */
.axis line, .axis path { stroke: var(--muted); stroke-width: 1; shape-rendering: crispEdges; }
.axis text, .label { fill: var(--muted); font-size: 13px; }
.title { fill: var(--ink); font-size: 15px; font-style: italic; }
.ink { stroke: var(--ink); fill: none; stroke-width: 1.6; }
.muted { stroke: var(--muted); fill: none; stroke-width: 1.3; }
.dashed { stroke-dasharray: 5 3; }
.band { fill: var(--band); stroke: none; }
.diag { stroke: var(--muted); stroke-dasharray: 2 3; stroke-width: 1; }
.dot { fill: var(--ink); fill-opacity: 0.75; }
.you { fill: none; stroke: var(--accent); stroke-width: 2.2; }
.you-label { fill: var(--accent); font-size: 13px; }
.window { fill: var(--accent-soft); stroke: none; }
.window-edge { stroke: var(--accent); stroke-width: 1; }
.zero { stroke: var(--faint); stroke-width: 1; shape-rendering: crispEdges; }
.lab-ink { fill: var(--ink); font-size: 13px; }
.lab-muted { fill: var(--muted); font-size: 13px; }
.ci-line { stroke: var(--ink); stroke-width: 1.6; }
.ci-line.published { stroke: var(--muted); }
.ci-dot { fill: var(--ink); }
.ci-dot.published { fill: var(--bg); stroke: var(--muted); stroke-width: 1.6; }
.erp { touch-action: pan-y; cursor: col-resize; user-select: none; -webkit-user-select: none; }

/* task */
.task { margin: 1.5rem 0 1rem; }
.task-controls { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.4rem 0.8rem; font-size: 1.2rem; }
.task-controls input[type="range"] { flex: 1 1 8rem; min-width: 8rem; accent-color: var(--accent); }
.task-controls output { font-variant-numeric: tabular-nums; min-width: 4.5em; }
.frames { color: var(--muted); font-size: 1.05rem; }
.stage {
  height: 10rem; margin: 1rem 0;
  display: flex; align-items: center; justify-content: center;
  border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink);
}
.stimulus { font-family: Arial, Helvetica, sans-serif; font-size: 2.4rem; letter-spacing: 0.02em; }
.stage.idle .stimulus::before { content: "Press Start when you are ready"; font-family: et-book, Georgia, serif; font-style: italic; font-size: 1.3rem; color: var(--muted); letter-spacing: 0; }
.task-buttons { display: flex; flex-wrap: wrap; gap: 0.6rem; }
button {
  font: inherit; font-size: 1.2rem; color: var(--ink); background: transparent;
  border: 1px solid var(--ink); border-radius: 0; padding: 0.45rem 1rem; cursor: pointer;
  min-height: 2.75rem;
}
button:hover:not(:disabled) { color: var(--accent); border-color: var(--accent); }
button:disabled { color: var(--muted); border-color: var(--faint); cursor: default; }
button kbd { margin-left: 0.4rem; font-size: 0.85rem; }
button:focus-visible, input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
#answer-word, #answer-nonword { flex: 1 1 9rem; }
.progress { font-size: 1.1rem; color: var(--muted); margin: 0.6rem 0 0; min-height: 1.4rem; width: auto; }

.task { display: flex; flex-direction: column; position: relative; }
.task > .marginnote { position: absolute; left: 110%; top: 0; width: 50%; margin: 0; float: none; }

/* ERP controls */
.erp-controls { margin: 1.2rem 0 0.6rem; }
.erp-controls fieldset { border: 0; padding: 0; margin: 0 0 0.5rem; font-size: 1.15rem; line-height: 1.6; }
.erp-controls fieldset:disabled { color: var(--muted); }
.erp-controls .opts { margin-left: 5.5rem; }
.erp-controls legend {
  float: left; width: 5.5rem; padding: 0;
  font-variant: small-caps; letter-spacing: 0.04em; color: var(--muted);
}
.erp-controls label { margin-right: 1rem; white-space: nowrap; }
.erp-controls input { accent-color: var(--accent); margin: 0 0.25rem 0 0; vertical-align: -1px; }
.presets button { font-size: 1.05rem; padding: 0.1rem 0.6rem; min-height: 2.2rem; margin: 0 0.3rem 0.3rem 0; }
.presets button[aria-pressed="true"] { color: var(--bg); background: var(--ink); border-color: var(--ink); }

/* tables */
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; font-size: 1.15rem; line-height: 1.5; width: 100%; }
th { font-weight: normal; font-style: italic; text-align: left; border-bottom: 1px solid var(--ink); padding: 0.2rem 0.8rem 0.2rem 0; }
td { padding: 0.15rem 0.8rem 0.15rem 0; border-bottom: 1px solid var(--faint); vertical-align: baseline; }
.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
tr.group th { font-style: normal; text-align: left; border-bottom: 1px solid var(--faint); padding-top: 0.9rem; }
.changed { color: var(--accent); }
.fits table { margin-bottom: 0.5rem; }
.fits td:first-child { white-space: normal; }

.result { border-left: 2px solid var(--accent); padding-left: 1rem; }
.refs { font-size: 1.15rem; line-height: 1.5; padding-left: 1.4rem; }
.refs li { margin-bottom: 0.6rem; }
footer p { font-size: 1.1rem; color: var(--muted); margin-top: 4rem; }
noscript p { width: 55%; margin-left: 12.5%; }

@media (max-width: 760px) {
  html { font-size: 14px; }
  body { width: 100%; padding: 1.5rem 16px 3rem; }
  section > p, section > ol, section > ul, footer > p, .main { width: 100%; }
  h1 { font-size: 2.6rem; }
  .lede { font-size: 1.6rem; line-height: 2.2rem; }
.subtitle { font-size: 1.45rem; }
  h2 { font-size: 1.9rem; }
  p, ol, ul { font-size: 1.3rem; line-height: 1.85rem; }
  .marginnote {
    display: block; float: none; width: auto; margin: 1rem 0 1rem 1.2rem;
    padding-left: 0.8rem; border-left: 1px solid var(--faint); color: var(--muted);
  }
  .pair { grid-template-columns: 1fr; gap: 0.5rem; }
  .erp-controls legend { float: none; width: auto; }
  .erp-controls .opts { margin-left: 0; }
  .task > .marginnote { position: static; order: 9; width: auto; margin: 1rem 0 0 1.2rem; }
  .stage { height: 7rem; }
  .lede { font-size: 1.4rem; line-height: 1.9rem; }
  h2 { margin-top: 2.5rem; }
  table { font-size: 1.05rem; }
}