/*
 * A printed page. Each sound engine is an "edition" of it: the layout never
 * changes, only the paper, ink and one spot colour (set on <html data-engine>
 * by app.ts; an inline script in index.html applies the saved one early).
 *   fm       cream and vermilion
 *   fm_bus   midnight press, gold foil
 *   synth    blueprint
 *   samples  sepia field notebook
 */
/* Self-hosted latin subsets; licences in fonts/. */
@font-face {
  font-family: "Fraunces";
  font-style: normal;
  font-weight: 300 800;
  font-display: swap;
  src: url("fonts/fraunces-normal-300-800.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Fraunces";
  font-style: italic;
  font-weight: 300 800;
  font-display: swap;
  src: url("fonts/fraunces-italic-300-800.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/ibm-plex-mono-normal-400.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("fonts/ibm-plex-mono-normal-500.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("fonts/ibm-plex-mono-normal-600.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@property --progress {
  syntax: "<number>";
  inherits: true;
  initial-value: 0;
}

:root,
:root[data-engine="fm"] {
  --paper: #f3eee2;
  --ink: #1c1a16;
  --spot: #d93a18;
  --on-spot: #fff8ee;
  --soft: #6b6555;
  --rule: rgba(28, 26, 22, 0.2);
  --mark: rgba(217, 58, 24, 0.26);
  --grain: 0.05;
  color-scheme: light;
}
:root[data-engine="fm_bus"] {
  --paper: #111a2e;
  --ink: #f0e6cf;
  --spot: #e8b04a;
  --on-spot: #111a2e;
  --soft: #a3a8ba;
  --rule: rgba(240, 230, 207, 0.22);
  --mark: rgba(232, 176, 74, 0.34);
  --grain: 0.08;
  color-scheme: dark;
}
:root[data-engine="synth"] {
  --paper: #0b2a63;
  --ink: #f4f8ff;
  --spot: #ffd84a;
  --on-spot: #0b2a63;
  --soft: #c2d5f5;
  --rule: rgba(244, 248, 255, 0.28);
  --mark: rgba(255, 216, 74, 0.32);
  --grain: 0;
  color-scheme: dark;
}
:root[data-engine="samples"] {
  --paper: #e7d6b5;
  --ink: #33230f;
  --spot: #2a6548;
  --on-spot: #f6ecd6;
  --soft: #5d4c32;
  --rule: rgba(51, 35, 15, 0.25);
  --mark: rgba(42, 101, 72, 0.28);
  --grain: 0.12;
  color-scheme: light;
}
/* The two paper editions get a night version, so the page follows the system. */
@media (prefers-color-scheme: dark) {
  :root,
  :root[data-engine="fm"] {
    --paper: #17140f;
    --ink: #efe7d6;
    --spot: #f0613d;
    --on-spot: #17140f;
    --soft: #a89f8b;
    --rule: rgba(239, 231, 214, 0.22);
    --mark: rgba(240, 97, 61, 0.34);
    --grain: 0.08;
    color-scheme: dark;
  }
  :root[data-engine="samples"] {
    --paper: #1d1810;
    --ink: #e8d8b8;
    --spot: #74c19a;
    --on-spot: #1d1810;
    --soft: #b3a07c;
    --rule: rgba(232, 216, 184, 0.22);
    --mark: rgba(116, 193, 154, 0.3);
    --grain: 0.1;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html {
  background: var(--paper);
  transition: background-color 0.5s;
}
body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font: 400 17px/1.5 "Fraunces", Georgia, "Times New Roman", serif;
  font-optical-sizing: auto;
}
/* Paper grain. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  opacity: var(--grain);
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 .9 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

button { font: inherit; color: inherit; cursor: pointer; }
button:focus-visible,
input:focus-visible,
a:focus-visible { outline: 3px solid var(--spot); outline-offset: 3px; }
a { color: var(--ink); }
code { font-family: "IBM Plex Mono", ui-monospace, Menlo, monospace; font-size: 0.9em; }
.mono { font: 500 13px/1.4 "IBM Plex Mono", ui-monospace, Menlo, monospace; letter-spacing: 0.06em; text-transform: uppercase; }

.sheet { max-width: 1040px; margin: 0 auto; padding: 22px 24px 56px; }

/* ---- masthead ---------------------------------------------------------- */
.strip {
  display: flex;
  justify-content: space-between;
  gap: 4px 16px;
  flex-wrap: wrap;
  padding-bottom: 8px;
  border-bottom: 1.5px solid var(--ink);
  color: var(--soft);
}
.strip b { color: var(--ink); font-weight: 600; }

.mast {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 12px 32px;
  padding: 16px 0 14px;
  border-bottom: 1.5px solid var(--ink);
}
.mast h1 {
  margin: 0;
  font-weight: 800;
  font-size: clamp(52px, 11vw, 120px);
  line-height: 0.86;
  letter-spacing: -0.045em;
  font-variation-settings: "opsz" 144;
}
.mast h1 em { font-weight: 300; font-style: italic; color: var(--spot); letter-spacing: -0.03em; }
.mast aside { max-width: 17em; font-style: italic; font-size: 19px; line-height: 1.3; padding-bottom: 8px; }

/* ---- numbered section headings ----------------------------------------- */
.step { display: flex; align-items: baseline; gap: 12px; margin: 0 0 12px; }
.step .n {
  display: inline-grid;
  place-items: center;
  flex: none;
  align-self: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  font: 600 13px/1 "IBM Plex Mono", ui-monospace, monospace;
}
.step h2 { margin: 0; font-weight: 600; font-size: 24px; letter-spacing: -0.01em; }
.step .help { color: var(--soft); font-style: italic; font-size: 16px; }

/* ---- player ------------------------------------------------------------ */
.fig { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 0 30px; padding-top: 22px; }
.main { min-width: 0; }

.margin { display: grid; align-content: start; justify-items: center; gap: 14px; padding-top: 4px; }
.play {
  appearance: none;
  width: 124px;
  height: 124px;
  border-radius: 50%;
  border: 0;
  display: grid;
  place-content: center;
  text-align: center;
  background: var(--spot);
  color: var(--on-spot);
  font-weight: 600;
  font-style: italic;
  font-size: 25px;
  line-height: 1;
  box-shadow: 0 0 0 1.5px var(--paper), 0 0 0 3.5px var(--spot);
  transition: transform 0.15s;
}
.play:hover { transform: rotate(-6deg) scale(1.03); }
.play .glyph { display: block; font-style: normal; font-size: 30px; margin-bottom: 6px; }
.oval {
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px 8px;
  border: 2px solid var(--ink);
  border-radius: 999px;
  background: transparent;
  color: var(--ink);
  font: 600 13px/1 "IBM Plex Mono", ui-monospace, monospace;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
  transition: background-color 0.12s, color 0.12s;
}
.oval:hover { background: var(--ink); color: var(--paper); }
.oval.solid { background: var(--spot); border-color: var(--spot); color: var(--on-spot); }
.oval.solid:hover { filter: brightness(1.1); background: var(--spot); color: var(--on-spot); }
.link {
  appearance: none;
  background: none;
  border: 0;
  padding: 0;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}
.link:hover { color: var(--spot); }
.vol { justify-self: stretch; display: grid; gap: 4px; margin-top: 4px; color: var(--soft); }
.vol input { width: 100%; margin: 0; accent-color: var(--spot); }

.score { position: relative; border-top: 1.5px solid var(--ink); border-bottom: 1.5px solid var(--ink); }
#roll { display: block; width: 100%; height: 220px; }
.splash {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 14px;
  padding: 0 20px;
  text-align: center;
  font-style: italic;
  font-size: 21px;
  background: color-mix(in srgb, var(--paper) 86%, transparent);
}
.splash[hidden] { display: none; }
.splash p { margin: 0; max-width: 26em; line-height: 1.3; }
.cap { display: flex; justify-content: space-between; gap: 12px; padding: 6px 0 0; color: var(--soft); }
.cap .nav { white-space: nowrap; }
.cap .nav b { color: var(--ink); font-weight: 600; font-variant-numeric: tabular-nums; }
/* Waiting for a jump to start playing (samples downloading): the number breathes, after a beat's grace. */
.cap .nav b.seeking { animation: seeking 0.9s ease-in-out 0.3s infinite; }
@keyframes seeking { 50% { opacity: 0.25; } }
@media (prefers-reduced-motion: reduce) { .cap .nav b.seeking { animation: none; opacity: 0.5; } }

.now { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 4px 24px; padding: 22px 0 6px; }
.now-style {
  margin: 0;
  font-weight: 400;
  font-style: italic;
  font-size: clamp(34px, 5.5vw, 56px);
  line-height: 1.02;
  letter-spacing: -0.02em;
}
.now-style[style*="--swatch"]::before {
  content: "";
  display: inline-block;
  width: 0.36em;
  height: 0.36em;
  margin-right: 0.22em;
  border-radius: 50%;
  vertical-align: 0.1em;
  background: var(--swatch, var(--spot));
}
.now-meta { color: var(--soft); text-align: right; }
.chords { grid-column: 1 / -1; min-height: 1.5em; padding-top: 6px; font-size: 22px; overflow-wrap: anywhere; }
.chords .name { font-weight: 500; }
.chords .roman { font-size: 13px; vertical-align: super; color: var(--soft); margin-left: 2px; }
.chords .sep { color: var(--soft); margin: 0 12px; }

.prog { margin-top: 14px; }
/* A taller target around the thin bar, which marks the piece's sections; drag over it and let go to jump. */
.track { position: relative; z-index: 1; padding: 9px 0; margin: -9px 0; cursor: pointer; touch-action: pan-y; user-select: none; -webkit-user-select: none; }
.track:focus-visible { outline: 3px solid var(--spot); outline-offset: 1px; }
.bar > .tick { position: absolute; top: 0; bottom: 0; width: 2px; margin-left: -1px; background: var(--paper); }
.bar > .pick { position: absolute; top: -3px; bottom: -3px; background: var(--spot); opacity: 0.45; pointer-events: none; display: none; }
.bar > .pick.on { display: block; }
.bar { height: 4px; background: var(--rule); position: relative; }
.bar::before { content: ""; position: absolute; inset: 0; width: calc(var(--p, 0) * 100%); background: var(--ink); transition: width 0.25s linear; }
.bar::after {
  content: "";
  position: absolute;
  top: -5px;
  left: calc(var(--p, 0) * 100%);
  width: 14px;
  height: 14px;
  margin-left: -7px;
  border-radius: 50%;
  background: var(--spot);
  transition: left 0.25s linear;
}
.labels { display: flex; justify-content: space-between; gap: 12px; padding-top: 8px; color: var(--soft); }

/* ---- sound ------------------------------------------------------------- */
.sound { margin-top: 40px; padding-top: 20px; border-top: 1.5px solid var(--ink); }
.seg { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0 28px; }
.opt {
  appearance: none;
  display: grid;
  gap: 7px;
  align-content: start;
  min-width: 0;
  padding: 0 0 6px;
  border: 0;
  background: none;
  text-align: left;
  color: var(--ink);
}
/* The rule above each option. The audible one is a solid bar; the one that is
   still loading fills up like a progress bar. */
.opt::before {
  content: "";
  display: block;
  height: 6px;
  margin-bottom: 8px;
  background: linear-gradient(var(--ink) 0 2px, transparent 2px);
}
.opt[aria-checked="true"]::before { background: var(--spot); }
.opt { transition: --progress 0.25s linear; }
.opt.filling::before,
.opt.pending::before { background: linear-gradient(90deg, var(--spot) calc(var(--progress) * 100%), var(--rule) 0); }
.opt .top { display: flex; align-items: center; gap: 10px; color: var(--soft); font: 500 13px/1 "IBM Plex Mono", ui-monospace, monospace; letter-spacing: 0.1em; text-transform: uppercase; }
.dot { width: 20px; height: 20px; flex: none; border-radius: 50%; border: 2px solid var(--ink); }
.opt .nm { margin-top: 2px; font-size: clamp(26px, 3.4vw, 36px); line-height: 1.05; letter-spacing: -0.02em; font-style: italic; font-weight: 400; }
.opt .nm span { padding: 0 2px; }
.opt .tag { font: 500 12px/1.3 "IBM Plex Mono", ui-monospace, monospace; letter-spacing: 0.05em; text-transform: uppercase; color: var(--soft); }
.opt:hover .nm span { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 6px; text-decoration-color: var(--spot); }
.opt[aria-checked="true"] .dot { background: var(--spot); border-color: var(--spot); }
.opt[aria-checked="true"] .top,
.opt[aria-checked="true"] .tag { color: var(--ink); }
.opt[aria-checked="true"] .nm { font-style: normal; font-weight: 700; }
.opt[aria-checked="true"] .nm span { background: linear-gradient(transparent 50%, var(--mark) 50% 88%, transparent 88%); }
.opt.pending .dot { border-style: dashed; border-color: var(--spot); }
.opt:focus-visible { outline-offset: 6px; }
.edesc { margin: 12px 0 0; min-height: 1.6em; font-style: italic; font-size: 16px; color: var(--soft); }

/* ---- styles ------------------------------------------------------------ */
.styles { margin-top: 40px; padding-top: 20px; border-top: 1.5px solid var(--ink); }
.list { display: grid; border-top: 1px solid var(--rule); }
.style {
  appearance: none;
  display: grid;
  grid-template-columns: 20px 52px minmax(0, 0.9fr) minmax(0, 1.3fr);
  gap: 12px;
  align-items: center;
  padding: 12px 6px;
  border: 0;
  border-bottom: 1px solid var(--rule);
  background: none;
  text-align: left;
  color: var(--ink);
}
.style:hover { background: color-mix(in srgb, var(--ink) 6%, transparent); }
.style .no { font-style: italic; font-weight: 300; font-size: 30px; line-height: 1; color: var(--soft); }
.style .nm { display: flex; align-items: center; flex-wrap: wrap; gap: 4px 12px; font-size: 25px; line-height: 1.1; letter-spacing: -0.015em; }
.style .ds { color: var(--soft); font-style: italic; font-size: 14.5px; line-height: 1.35; }
.style[aria-pressed="true"] .dot { background: var(--swatch); border-color: var(--swatch); }
.style[aria-pressed="true"] .no { color: var(--spot); }
.style[aria-pressed="true"] .nm { font-weight: 600; }
.badge {
  display: none;
  padding: 5px 8px 4px;
  border-radius: 999px;
  background: var(--spot);
  color: var(--on-spot);
  font: 600 11px/1 "IBM Plex Mono", ui-monospace, monospace;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.style.playing .badge { display: inline-block; }

/* ---- colophon ---------------------------------------------------------- */
.colophon {
  margin-top: 40px;
  padding-top: 12px;
  border-top: 1.5px solid var(--ink);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 32px;
  color: var(--soft);
  font-size: 14px;
}
.colophon p { margin: 0; }
.colophon a { color: var(--ink); }
.colophon [hidden] { display: none; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  z-index: 10;
  max-width: calc(100vw - 32px);
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--paper);
  font: 500 13px/1.3 "IBM Plex Mono", ui-monospace, monospace;
  letter-spacing: 0.04em;
}

@media (prefers-reduced-motion: reduce) {
  .play, .bar::before, .bar::after, .opt, html { transition: none; }
  .play:hover { transform: none; }
}

@media (max-width: 760px) {
  .sheet { padding: 18px 16px 48px; }
  .mast { grid-template-columns: 1fr; }
  .fig { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .margin { grid-template-columns: auto 1fr; justify-items: start; align-items: center; gap: 10px 20px; }
  .margin .play { grid-row: span 3; width: 96px; height: 96px; font-size: 20px; }
  .margin .play .glyph { font-size: 24px; margin-bottom: 4px; }
  .vol { grid-column: 2; justify-self: stretch; }
  .now { grid-template-columns: minmax(0, 1fr); }
  .now-meta { text-align: left; }
  .seg { grid-template-columns: 1fr 1fr; gap: 18px 24px; }
  .style { grid-template-columns: 20px minmax(0, 1fr); }
  .style .no, .style .ds { display: none; }
  .colophon { grid-template-columns: 1fr; }
}