/* Graded Readers: shared styles. Light and dark from tokens. */
:root {
  --bg: #eef1f6; --card: #fff; --card-2: #f5f7fb;
  --border: #dde3ef; --border-soft: #e8ecf4;
  --text: #1a2030; --muted: #5d6b89;
  --accent: #4f7ef8; --accent-text: #2f5fd6; --accent-soft: #e3ebff;
  --on-accent: #fff;
  --paper: #fff; --paper-text: #1d2333;
  --fr-bg: #f3f6ff; --fr-bar: #8fa8f0;
  --lv-VE: #1e7d4f; --lv-VE-bg: #e5f5ec;
  --lv-E: #0c7c86; --lv-E-bg: #e0f4f6;
  --lv-M: #2f5fd6; --lv-M-bg: #e3ebff;
  --lv-H: #8a6414; --lv-H-bg: #faf1dd;
  --lv-VH: #6d28d9; --lv-VH-bg: #f0eaff;
  --lv-oneoff: #55607a; --lv-oneoff-bg: #eaecf1;
  --shadow: 0 1px 6px rgba(20,30,60,.08);
  --radius: 12px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-read: Georgia, "Iowan Old Style", "Palatino Linotype", Palatino, "Times New Roman", serif;
  --read-size: 19px;
}
:root[data-theme="dark"] {
  --bg: #12151d; --card: #1b202c; --card-2: #212838;
  --border: #2c3446; --border-soft: #262d3d;
  --text: #e6eaf4; --muted: #9aa6c0;
  --accent: #7c9bff; --accent-text: #9db4ff; --accent-soft: #24304f;
  --on-accent: #0d1220;
  --paper: #181d29; --paper-text: #dfe4f0;
  --fr-bg: #1e2638; --fr-bar: #4d64a8;
  --lv-VE: #6fd6a0; --lv-VE-bg: #17322a;
  --lv-E: #6bd2dc; --lv-E-bg: #15313a;
  --lv-M: #9db4ff; --lv-M-bg: #22305a;
  --lv-H: #f0c96a; --lv-H-bg: #3a2f14;
  --lv-VH: #c4a6ff; --lv-VH-bg: #2f2350;
  --lv-oneoff: #b3bdd4; --lv-oneoff-bg: #2a3142;
  --shadow: 0 1px 6px rgba(0,0,0,.4);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #12151d; --card: #1b202c; --card-2: #212838;
    --border: #2c3446; --border-soft: #262d3d;
    --text: #e6eaf4; --muted: #9aa6c0;
    --accent: #7c9bff; --accent-text: #9db4ff; --accent-soft: #24304f;
    --on-accent: #0d1220;
    --paper: #181d29; --paper-text: #dfe4f0;
    --fr-bg: #1e2638; --fr-bar: #4d64a8;
    --lv-VE: #6fd6a0; --lv-VE-bg: #17322a;
    --lv-E: #6bd2dc; --lv-E-bg: #15313a;
    --lv-M: #9db4ff; --lv-M-bg: #22305a;
    --lv-H: #f0c96a; --lv-H-bg: #3a2f14;
    --lv-VH: #c4a6ff; --lv-VH-bg: #2f2350;
    --lv-oneoff: #b3bdd4; --lv-oneoff-bg: #2a3142;
    --shadow: 0 1px 6px rgba(0,0,0,.4);
  }
}

* , *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: var(--font-sans); font-size: 15px; line-height: 1.5;
}
a { color: var(--accent-text); }
button, input, select { font: inherit; color: inherit; }
[hidden] { display: none !important; }

/* ---------- top bar ---------- */
.topbar {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  padding: 10px 16px; background: var(--card); border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; font-size: 15px; color: var(--text); text-decoration: none; white-space: nowrap; }
.topnav { display: flex; gap: 6px; margin-left: auto; align-items: center; flex-wrap: wrap; }
.pill {
  display: inline-flex; align-items: center; gap: 6px; appearance: none; cursor: pointer;
  font-size: 12.5px; font-weight: 700; line-height: 1.35; white-space: nowrap;
  padding: 5px 13px; border-radius: 999px; text-decoration: none;
  border: 1px solid var(--border); background: var(--card); color: var(--muted);
}
.pill:hover { border-color: var(--accent); color: var(--text); }
.pill[aria-pressed="true"], .pill.on { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.pill .n { font-weight: 500; opacity: .8; }

/* ---------- library ---------- */
.wrap { max-width: 1240px; margin: 0 auto; padding: 22px 16px 40px; }
.intro h1 { font-size: 22px; margin: 0 0 6px; line-height: 1.25; }
.intro p { margin: 0 0 6px; color: var(--muted); max-width: 70ch; }
.intro .origin-line { font-size: 12.5px; }
.controls { display: flex; flex-wrap: wrap; gap: 10px 14px; align-items: center; margin: 18px 0 14px; }
.controls .levels { display: flex; flex-wrap: wrap; gap: 6px; }
.controls .right { display: flex; gap: 8px; margin-left: auto; align-items: center; flex-wrap: wrap; }
.search, .select {
  border: 1px solid var(--border); background: var(--card); border-radius: 9px;
  padding: 7px 11px; font-size: 14px;
}
.search { width: 240px; max-width: 100%; }
.count { color: var(--muted); font-size: 13px; margin-bottom: 10px; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(360px, 1fr)); gap: 12px; }
.card {
  display: flex; flex-direction: column; gap: 8px; text-decoration: none; color: var(--text);
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 13px 15px; box-shadow: var(--shadow); transition: border-color .12s, transform .08s;
}
.card:hover { border-color: var(--accent); transform: translateY(-1px); }
.card:focus-visible, .pill:focus-visible, .search:focus-visible, .select:focus-visible, .btn:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px;
}
.card h2 { font-size: 16px; line-height: 1.3; margin: 0; font-weight: 700; }
.card .row { display: flex; gap: 6px 8px; align-items: center; flex-wrap: wrap; font-size: 12.5px; color: var(--muted); }
.card .row .dot { opacity: .5; }
.badge {
  display: inline-block; font-size: 11.5px; font-weight: 700; padding: 2px 9px; border-radius: 999px;
  white-space: nowrap; line-height: 1.5;
}
.badge.fr { background: var(--accent-soft); color: var(--accent-text); }
.lv-VE { background: var(--lv-VE-bg); color: var(--lv-VE); }
.lv-E { background: var(--lv-E-bg); color: var(--lv-E); }
.lv-M { background: var(--lv-M-bg); color: var(--lv-M); }
.lv-H { background: var(--lv-H-bg); color: var(--lv-H); }
.lv-VH { background: var(--lv-VH-bg); color: var(--lv-VH); }
.lv-oneoff { background: var(--lv-oneoff-bg); color: var(--lv-oneoff); }
.empty { color: var(--muted); padding: 30px 0; text-align: center; }

.levels-table { margin: 4px 0 0; }
details.levelinfo { margin-top: 14px; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 10px 15px; }
details.levelinfo summary { cursor: pointer; font-weight: 700; font-size: 13.5px; }
.tablewrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 13.5px; margin: 8px 0; }
th, td { text-align: left; padding: 6px 10px; border-bottom: 1px solid var(--border-soft); white-space: nowrap; }
th { color: var(--muted); font-weight: 700; font-size: 12.5px; }
td.num, th.num { text-align: right; }

.foot { color: var(--muted); font-size: 12.5px; text-align: center; padding: 24px 16px 30px; }

/* ---------- reader ---------- */
.readerbar {
  position: sticky; top: 0; z-index: 5; background: var(--card); border-bottom: 1px solid var(--border);
  padding: 8px 16px; display: flex; flex-wrap: wrap; gap: 8px 10px; align-items: center;
}
.readerbar .title { font-weight: 700; font-size: 15px; margin-right: auto; min-width: 0; }
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 999px; overflow: hidden; }
.seg button {
  appearance: none; border: 0; background: var(--card); color: var(--muted); cursor: pointer;
  padding: 5px 12px; font-size: 12.5px; font-weight: 700; white-space: nowrap;
}
.seg button + button { border-left: 1px solid var(--border); }
.seg button[aria-pressed="true"] { background: var(--accent); color: var(--on-accent); }
.tool { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; color: var(--muted); white-space: nowrap; }
.tool input[type=checkbox] { accent-color: var(--accent); }
.readerbar .select { padding: 4px 8px; font-size: 12.5px; max-width: 220px; }

.paper {
  max-width: 44rem; margin: 22px auto 60px; padding: 30px 34px 40px; background: var(--paper); color: var(--paper-text);
  border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow);
  font-family: var(--font-read); font-size: var(--read-size); line-height: 1.7;
}
.paper.wide { max-width: 78rem; }
.story-head h1 { font-family: var(--font-sans); font-size: 26px; line-height: 1.25; margin: 0 0 8px; }
.story-head .row { display: flex; flex-wrap: wrap; gap: 6px 10px; align-items: center; font: 13px/1.4 var(--font-sans); color: var(--muted); }
details.report { font: 13.5px/1.5 var(--font-sans); margin: 14px 0 6px; border: 1px solid var(--border); border-radius: 10px; padding: 8px 12px; background: var(--card-2); color: var(--text); }
details.report summary { cursor: pointer; font-weight: 700; }
details.report p { margin: 8px 0; }
.chapter { margin-top: 2.2em; scroll-margin-top: 70px; }
.chapter .eyebrow { font: 700 12px/1 var(--font-sans); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.chapter h2 { font-family: var(--font-sans); font-size: 21px; line-height: 1.3; margin: 6px 0 4px; }
.chapter .also { font: 13px/1.4 var(--font-sans); color: var(--muted); margin: 0 0 8px; }
.para { margin: 0 0 1.05em; }
.pair { display: grid; grid-template-columns: 1fr; gap: 0; margin: 0 0 1.05em; }
.pair.two { grid-template-columns: 1fr 1fr; gap: 0 30px; }
.pair .fr, .para.fr { background: var(--fr-bg); border-left: 3px solid var(--fr-bar); padding: 6px 12px; border-radius: 0 8px 8px 0; }
.pair.two .fr { margin: 0; }
.pair .en, .pair .fr { margin: 0; }
.pair:not(.two) .fr { margin-top: .55em; }
.summary { font: italic 14px/1.5 var(--font-sans); color: var(--muted); margin: -.55em 0 1.05em; padding-left: 12px; border-left: 3px solid var(--border); }
.script .line { display: block; margin: 0 0 .25em; }
.sp { font-family: var(--font-sans); font-weight: 700; font-size: .82em; color: var(--accent-text); margin-right: .35em; }
.pager { display: flex; justify-content: space-between; gap: 10px; margin-top: 2.4em; font-family: var(--font-sans); }
.btn { display: inline-block; text-decoration: none; cursor: pointer; border: 1px solid var(--border); background: var(--card); color: var(--text); border-radius: 9px; padding: 7px 14px; font: 700 13px var(--font-sans); }
.btn:hover { border-color: var(--accent); }
.loading, .err { max-width: 44rem; margin: 40px auto; padding: 0 16px; color: var(--muted); }

/* method page */
.doc { max-width: 46rem; margin: 22px auto 50px; padding: 26px 30px 34px; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); line-height: 1.6; }
.doc h1 { font-size: 24px; margin: 0 0 4px; }
.doc h2 { font-size: 18px; margin: 1.5em 0 .4em; }
.doc ul { padding-left: 1.2em; }
.doc li { margin: .35em 0; }
.doc code { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: .9em; background: var(--card-2); padding: 1px 5px; border-radius: 5px; }

@media (max-width: 900px) {
  .pair.two { grid-template-columns: 1fr; }
  .pair.two .fr { margin-top: .55em; }
}
@media (max-width: 640px) {
  .grid { grid-template-columns: 1fr; }
  .paper { margin: 12px 0 40px; padding: 20px 16px 30px; border-radius: 0; border-left: 0; border-right: 0; }
  .doc { margin: 12px 0 30px; padding: 20px 16px 26px; border-radius: 0; border-left: 0; border-right: 0; }
  .story-head h1 { font-size: 18px; }
  .story-head .row { gap: 6px 8px; font-size: 12.5px; }
  .readerbar { position: static; }
  .readerbar .title { flex-basis: 100%; }
  .search { width: 100%; }
  .controls .right { margin-left: 0; width: 100%; }
}

/* Reader page: holds the "Nathan Schaumann, all projects" link, lined up with the story title. */
.home-wrap { max-width: 44rem; margin: 14px auto 0; padding: 0 35px; }
@media (max-width: 640px) { .home-wrap { padding: 0 16px; } }

/* "Nathan Schaumann, all projects" link: its inline dark blue is unreadable on the dark theme. */
:root[data-theme="dark"] .home-link a { color: #9db4ff !important; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .home-link a { color: #9db4ff !important; }
}