/* Direction: a printed bilingual reader. Paper and ink, a red pencil for marks. */
/* Newsreader and Instrument Sans (SIL Open Font License), latin subset, variable weight */
@font-face {
  font-family: "Newsreader";
  src: url("fonts/newsreader-latin.woff2") format("woff2");
  font-weight: 400 500;
  font-display: swap;
}
@font-face {
  font-family: "Instrument Sans";
  src: url("fonts/instrument-sans-latin.woff2") format("woff2");
  font-weight: 400 500;
  font-display: swap;
}
:root {
  --page: #f7f4ee;
  --card: #fdfbf7;
  --raised: #efe9df;
  --ink: #1f1b16;
  --ink-2: #5e554a;
  --ink-3: #7b7266;
  --line: rgb(31 27 22 / 0.1);
  --pencil: #b23a24;
  --pencil-soft: rgb(178 58 36 / 0.35);
  --serif: "Newsreader", Georgia, serif;
  --sans: "Instrument Sans", system-ui, sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --reader-size: 20px;
  --measure: 66ch;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --page: #161513;
  --card: #1c1a18;
  --raised: #262421;
  --ink: #efe9de;
  --ink-2: #aaa398;
  --ink-3: #8a847a;
  --line: rgb(239 233 222 / 0.1);
  --pencil: #ef8a72;
  --pencil-soft: rgb(239 138 114 / 0.4);
  color-scheme: dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --page: #161513;
    --card: #1c1a18;
    --raised: #262421;
    --ink: #efe9de;
    --ink-2: #aaa398;
    --ink-3: #8a847a;
    --line: rgb(239 233 222 / 0.1);
    --pencil: #ef8a72;
    --pencil-soft: rgb(239 138 114 / 0.4);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 400 15px/1.5 var(--sans);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--pencil); text-underline-offset: 3px; }
[hidden] { display: none !important; }
button, select { font: inherit; color: inherit; }
svg.icon { width: 16px; height: 16px; flex: none; stroke: currentColor; stroke-width: 1.5; fill: none; stroke-linecap: round; stroke-linejoin: round; }
:focus-visible { outline: 2px solid var(--pencil); outline-offset: 2px; border-radius: 4px; }

/* ---------- top bar ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  height: 56px; padding: 0 32px;
  border-bottom: 1px solid var(--line);
}
.icon-sun { display: none; }
:root[data-theme="dark"] .icon-sun { display: block; }
:root[data-theme="dark"] .icon-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .icon-sun { display: block; }
  :root:not([data-theme="light"]) .icon-moon { display: none; }
}
.brand { font: 500 17px/1 var(--serif); color: var(--ink); text-decoration: none; }
.brand span { color: var(--ink-3); }

main { max-width: 1200px; margin: 0 auto; padding: 0 32px 64px; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  height: 32px; padding: 0 12px;
  border: 1px solid var(--line); border-radius: 8px;
  background: var(--card); color: var(--ink-2);
  cursor: pointer;
  transition: background-color 150ms var(--ease), color 150ms var(--ease), border-color 150ms var(--ease);
}
.btn:hover { color: var(--ink); background: var(--raised); }
.btn:active { transform: scale(0.98); }
.btn.square { width: 32px; padding: 0; justify-content: center; }

/* ---------- home ---------- */
.home {
  display: grid; grid-template-columns: 280px 1fr; gap: 64px;
  align-items: start; padding-top: 64px;
}
.book { position: sticky; top: 32px; }
.cover {
  display: block; width: 100%; height: auto;
  border-radius: 3px 6px 6px 3px;
  box-shadow: 0 1px 2px rgb(0 0 0 / 0.08), 0 12px 32px rgb(31 27 22 / 0.16);
}
.book figcaption { margin-top: 16px; color: var(--ink-3); font-size: 13px; line-height: 20px; }

.intro h1 { margin: 0; font: 400 44px/1.08 var(--serif); letter-spacing: -0.02em; }
.intro .lede { margin: 16px 0 0; max-width: 36rem; color: var(--ink-2); font-size: 18px; line-height: 28px; }

.contents { margin-top: 48px; }
.contents h2 { margin: 0 0 8px; font: 500 13px/20px var(--sans); color: var(--ink-3); }
.story-list { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--line); }
.story-row {
  display: grid; grid-template-columns: 32px 1fr auto; gap: 16px; align-items: baseline;
  padding: 16px 8px; margin: 0 -8px;
  border-bottom: 1px solid var(--line);
  color: inherit; text-decoration: none;
  transition: background-color 150ms var(--ease);
}
.story-row:hover { background: var(--card); }
.story-row .num { font: 400 15px/1 var(--serif); color: var(--ink-3); font-variant-numeric: oldstyle-nums; }
.story-row .es { display: block; font: 400 21px/1.3 var(--serif); }
.story-row .en { display: block; margin-top: 4px; color: var(--ink-3); font-size: 14px; }
.story-row .meta { display: inline-flex; align-items: center; gap: 4px; color: var(--ink-3); font-size: 13px; font-variant-numeric: tabular-nums; white-space: nowrap; }
.story-row.done .meta { color: var(--pencil); }

/* ---------- reader toolbar ---------- */
.toolbar {
  position: sticky; top: 0; z-index: 5;
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px 24px;
  padding: 12px 0;
  background: var(--page);
  border-bottom: 1px solid var(--line);
}
.toolbar .group { display: flex; align-items: center; gap: 8px; }
.back { display: inline-flex; align-items: center; gap: 8px; margin-right: auto; color: var(--ink-2); text-decoration: none; }
.back:hover { color: var(--ink); }

.lang-toggle .box {
  width: 14px; height: 14px; border-radius: 4px;
  border: 1.5px solid var(--ink-3);
  display: grid; place-items: center;
  transition: background-color 150ms var(--ease), border-color 150ms var(--ease);
}
.lang-toggle .box svg { width: 10px; height: 10px; stroke-width: 2.5; opacity: 0; }
.lang-toggle[aria-pressed="true"] { color: var(--ink); }
.lang-toggle[aria-pressed="true"] .box { background: var(--ink); border-color: var(--ink); color: var(--page); }
.lang-toggle[aria-pressed="true"] .box svg { opacity: 1; }

.segmented {
  display: flex; padding: 2px; gap: 2px;
  background: var(--raised); border-radius: 8px;
}
.seg {
  height: 28px; padding: 0 12px;
  border: 0; border-radius: 6px; background: transparent;
  color: var(--ink-2); cursor: pointer;
  transition: background-color 150ms var(--ease), color 150ms var(--ease);
}
.seg:hover { color: var(--ink); }
.seg[aria-pressed="true"] { background: var(--card); color: var(--ink); box-shadow: 0 1px 2px rgb(0 0 0 / 0.08); }

/* ---------- story header ---------- */
.story-head { max-width: var(--measure); margin: 48px auto 32px; text-align: center; }
.story-no { margin: 0; color: var(--ink-3); font-size: 13px; font-variant-numeric: tabular-nums; }
.title-es { margin: 12px 0 8px; font: 400 40px/1.1 var(--serif); letter-spacing: -0.02em; }
.title-en { margin: 0; color: var(--ink-2); font-size: 16px; }

.audio {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 12px 16px;
  margin: 0 auto 48px; color: var(--ink-3); font-size: 13px;
}
.audio audio { width: min(400px, 100%); height: 40px; }
.audio label { display: inline-flex; align-items: center; gap: 8px; }
.audio select {
  height: 32px; padding: 0 8px;
  border: 1px solid var(--line); border-radius: 8px; background: var(--card); color: var(--ink);
}

.hint {
  max-width: var(--measure); margin: 0 auto 32px; padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-3); font-size: 14px; text-align: center;
}

/* ---------- reading text ---------- */
.text { font-size: var(--reader-size); line-height: 1.65; }
.text .es { font-family: var(--serif); color: var(--ink); }
.text .en { font-family: var(--sans); color: var(--ink-2); font-size: 0.8em; line-height: 1.7; }
.text .para { position: relative; }
.text .para::before {
  content: attr(data-n);
  position: absolute; left: -48px; top: 0.35em; width: 32px; text-align: right;
  font: 400 13px/1 var(--serif); color: var(--ink-3); font-variant-numeric: oldstyle-nums;
}

/* The signature: a red pencil underline on the pair being read. */
.text .s {
  cursor: pointer;
  text-decoration-line: underline;
  text-decoration-color: transparent;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 0.28em;
  text-decoration-skip-ink: none;
  transition: text-decoration-color 150ms var(--ease);
}
.text .s.hover { text-decoration-color: var(--pencil-soft); }
.text .s.active, .text .peekable[aria-expanded="true"] { text-decoration-color: var(--pencil); }

/* Side by side: a printed parallel edition */
.layout-side { max-width: 1040px; margin: 0 auto; padding-left: 48px; }
.layout-side .para {
  display: grid; grid-template-columns: 1fr 1fr; column-gap: 48px;
  padding-bottom: 24px;
}
.layout-side .col { margin: 0; }
.layout-side .col.en { padding-left: 48px; margin-left: -24px; border-left: 1px solid var(--line); }

/* Line by line: each Spanish sentence above its translation */
.layout-lines { max-width: var(--measure); margin: 0 auto; }
.layout-lines .para { padding-bottom: 24px; }
.layout-lines .pair { padding-bottom: 12px; }
.layout-lines .pair .s { display: block; width: fit-content; }
.layout-lines .pair .en { margin-top: 2px; }

/* One language: plain prose, tap a sentence for its translation */
.layout-solo { max-width: var(--measure); margin: 0 auto; }
.layout-solo .para { margin: 0 0 1.1em; }
.layout-solo .peek {
  display: block; margin: 8px 0 12px; padding: 4px 0 4px 16px;
  border-left: 2px solid var(--pencil);
  font-size: 0.8em; line-height: 1.6;
}
.layout-solo .peek.es { font-family: var(--serif); font-size: 0.95em; color: var(--ink); }
.layout-solo .peek.en { font-family: var(--sans); color: var(--ink-2); }

/* ---------- notes, nav, footer ---------- */
.notes { max-width: var(--measure); margin: 48px auto 0; padding-top: 24px; border-top: 1px solid var(--line); }
.notes h2 { margin: 0 0 16px; font: 400 22px/1.2 var(--serif); }
.notes ol { margin: 0; padding-left: 24px; }
.notes li { margin-bottom: 16px; }
.notes li::marker { font-family: var(--serif); color: var(--ink-3); }
.notes li span { display: block; }
.notes .es { font-family: var(--serif); font-size: 17px; }
.notes .en { color: var(--ink-2); font-size: 14px; margin-top: 4px; }

.story-nav {
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 16px;
  max-width: 1040px; margin: 64px auto 0; padding-top: 24px;
  border-top: 1px solid var(--line);
}
.story-nav a { font: 400 17px/1.3 var(--serif); color: var(--ink); text-decoration: none; }
.story-nav a:hover { color: var(--pencil); }
.story-nav small { display: block; font: 400 13px/20px var(--sans); color: var(--ink-3); }
.story-nav .prev { grid-column: 1; }
.story-nav .done-btn { grid-column: 2; }
.story-nav .next { grid-column: 3; text-align: right; }
.done-btn[aria-pressed="true"] { color: var(--pencil); border-color: var(--pencil-soft); }

.site-footer {
  padding: 24px 32px; border-top: 1px solid var(--line);
  color: var(--ink-3); font-size: 13px; text-align: center;
}
.site-footer p { margin: 0; }

/* ---------- small screens ---------- */
@media (max-width: 899px) {
  .home { grid-template-columns: 1fr; gap: 32px; padding-top: 32px; }
  .book { position: static; display: grid; grid-template-columns: 120px 1fr; gap: 16px; align-items: end; }
  .book figcaption { margin: 0; }
  .intro h1 { font-size: 36px; }
  .layout-side { padding-left: 0; }
  .text .para::before { display: none; }
}
@media (max-width: 639px) {
  .topbar { padding: 0 16px; }
  main { padding: 0 16px 48px; }
  .toolbar { gap: 8px 12px; }
  .back span { display: none; }
  .title-es { font-size: 32px; }
  .layout-side .para { column-gap: 16px; }
  .layout-side .col.en { padding-left: 16px; margin-left: -8px; }
  .story-nav { grid-template-columns: 1fr; text-align: center; }
  .story-nav .prev, .story-nav .done-btn, .story-nav .next { grid-column: 1; justify-self: center; text-align: center; }
}