/* ===========================================================
   カフカを読むためのドイツ語 — スタイル
   紙: 役所の複写用紙のような冷たいグレー / 文字: 青黒インク
   アクセント: 事務用スタンプの紫インク
   =========================================================== */

:root {
  --paper: #eceeea;
  --paper-2: #e1e4df;
  --card: #f5f6f3;
  --ink: #1a1f2b;
  --ink-soft: #4b5260;
  --rule: #c3c8c0;
  --stamp: #5d3a8e;
  --stamp-wash: rgba(93, 58, 142, .10);
  --m: #2b5a8c;
  --f: #a2333a;
  --n: #2c6e45;
  --pl: #80601c;

  --font-de: "Literata", "Georgia", serif;
  --font-ja: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", system-ui, sans-serif;
  --font-frak: "UnifrakturMaguntia", "Literata", serif;

  --measure: 42rem;
  --radius: 3px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #15181e;
    --paper-2: #1d2129;
    --card: #1a1e25;
    --ink: #dde0e6;
    --ink-soft: #a1a8b5;
    --rule: #343a45;
    --stamp: #b89ce4;
    --stamp-wash: rgba(184, 156, 228, .14);
    --m: #84aee0;
    --f: #e78d93;
    --n: #7fc79a;
    --pl: #d6b46e;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #15181e; --paper-2: #1d2129; --card: #1a1e25;
  --ink: #dde0e6; --ink-soft: #a1a8b5; --rule: #343a45;
  --stamp: #b89ce4; --stamp-wash: rgba(184, 156, 228, .14);
  --m: #84aee0; --f: #e78d93; --n: #7fc79a; --pl: #d6b46e;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-ja);
  font-size: 1.0625rem;
  line-height: 1.85;
  font-feature-settings: "palt" 0;
}

a { color: inherit; text-decoration-color: var(--stamp); text-underline-offset: .2em; }
a:hover { color: var(--stamp); }
:focus-visible { outline: 2px solid var(--stamp); outline-offset: 2px; border-radius: 2px; }

[lang="de"] { font-family: var(--font-de); hyphens: auto; }
i[lang="de"], em[lang="de"] { font-style: italic; }

.skip { position: absolute; left: -999px; top: 0; background: var(--ink); color: var(--paper); padding: .5rem 1rem; z-index: 10; }
.skip:focus { left: 1rem; }

/* ---------- header ---------- */
.site-head {
  display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between;
  gap: .5rem 2rem;
  padding: 1.25rem clamp(1rem, 4vw, 3rem);
  border-bottom: 1px solid var(--rule);
}
.brand { text-decoration: none; display: flex; flex-direction: column; line-height: 1.2; }
.brand-de { font-family: var(--font-frak); font-size: 1.7rem; letter-spacing: .01em; }
.brand-ja { font-size: .78rem; color: var(--ink-soft); letter-spacing: .08em; }
.site-nav { display: flex; flex-wrap: wrap; gap: .25rem 1.25rem; font-size: .92rem; }
.site-nav a { text-decoration: none; padding: .2rem 0; border-bottom: 2px solid transparent; }
.site-nav a[aria-current="page"] { border-bottom-color: var(--stamp); }

.site-foot {
  margin-top: 5rem; padding: 2rem clamp(1rem, 4vw, 3rem) 3rem;
  border-top: 1px solid var(--rule);
  font-size: .8rem; color: var(--ink-soft);
}
.site-foot p { max-width: var(--measure); margin: 0; }

/* ---------- home: hero ---------- */
.home { padding: 0 clamp(1rem, 4vw, 3rem); }
.hero { max-width: 60rem; padding: clamp(2.5rem, 7vw, 5rem) 0 3rem; }
.hero-title {
  font-size: clamp(1.15rem, 2.4vw, 1.4rem); font-weight: 500;
  margin: 0 0 .4rem; letter-spacing: .02em;
}
.hero-sub { margin: 0 0 2.25rem; color: var(--ink-soft); font-size: .95rem; max-width: 38rem; }

.satz-figure { margin: 0; }
.satz {
  font-size: clamp(1.65rem, 4.6vw, 3.1rem);
  line-height: 1.45;
  margin: 0;
  font-weight: 400;
  letter-spacing: -.005em;
}
.wort {
  font: inherit; color: inherit; background: none; border: 0; padding: 0 .02em; margin: 0;
  cursor: pointer; line-height: inherit;
  text-decoration: underline dotted 1px; text-decoration-color: var(--rule);
  text-underline-offset: .18em;
  border-radius: 2px;
  transition: background-color .15s;
}
.wort:hover { text-decoration-color: var(--ink-soft); }
.wort[aria-pressed="true"] { background: var(--stamp-wash); text-decoration-color: var(--stamp); text-decoration-style: solid; }
.wort.g-m { color: var(--m); } .wort.g-f { color: var(--f); } .wort.g-n { color: var(--n); } .wort.g-pl { color: var(--pl); }

.satz-figure figcaption {
  display: flex; flex-wrap: wrap; align-items: center; gap: .5rem 1.25rem;
  margin-top: 1.25rem; font-size: .85rem; color: var(--ink-soft);
}
.quelle { font-size: .85rem; color: var(--ink-soft); }

.satz-info {
  margin-top: 1.75rem; min-height: 8.5rem; max-width: 36rem;
  padding: 1rem 1.25rem; background: var(--card);
  border-left: 3px solid var(--stamp);
}
.satz-info-empty { margin: 0; color: var(--ink-soft); font-size: .92rem; }
.satz-info.has-sel .satz-info-empty { display: none; }
.si-wort { margin: 0; font-size: 1.6rem; line-height: 1.3; }
.si-ja { margin: .1rem 0 .4rem; font-weight: 700; }
.si-info { margin: 0; font-size: .93rem; }
.si-l { margin: .5rem 0 0; font-size: .8rem; color: var(--ink-soft); }

.uebersetzung { margin-top: 1.25rem; max-width: 36rem; font-size: .95rem; }
.uebersetzung summary { cursor: pointer; color: var(--ink-soft); }
.uebersetzung p { margin: .6rem 0 0; }

.home-about, .home-pfad { max-width: var(--measure); padding: 2.5rem 0 0; border-top: 1px solid var(--rule); margin-top: 1rem; }
.home h2 { font-size: 1.2rem; margin: 0 0 1rem; }
.kniffe { padding-left: 1.2rem; font-size: .95rem; }
.kniffe li { margin: .25rem 0; }

/* ---------- 道のり (karte) ---------- */
.karte { list-style: none; margin: 1.5rem 0 0; padding: 0; }
.karte-item a {
  position: relative;
  display: grid; grid-template-columns: 4.25rem 1fr; gap: .25rem 1rem;
  padding: .9rem .25rem .9rem 0; text-decoration: none;
  border-top: 1px solid var(--rule);
}
.karte-item:last-child a { border-bottom: 1px solid var(--rule); }
.karte-nr { font-size: .82rem; color: var(--ink-soft); padding-top: .2rem; }
.karte-title { display: block; font-weight: 700; }
.karte-lead { display: block; font-size: .88rem; color: var(--ink-soft); line-height: 1.6; margin-top: .15rem; }
.karte-lektuere a { background: var(--paper-2); padding-left: .75rem; padding-right: .75rem; grid-template-columns: 3.5rem 1fr; }
.karte-lektuere .karte-nr { color: var(--stamp); font-weight: 700; }
.karte-lektuere .karte-title { font-family: var(--font-de); font-weight: 600; font-size: 1.08rem; }
.karte-item a:hover .karte-title { color: var(--stamp); }

.mini-stempel {
  display: none;
  position: absolute; right: .5rem; top: 50%;
  transform: translateY(-50%) rotate(-9deg);
  font-family: var(--font-de); font-weight: 600; font-size: .78rem; letter-spacing: .08em;
  color: var(--stamp); border: 2px solid var(--stamp); border-radius: 4px;
  padding: 0 .4rem; line-height: 1.5; opacity: .85;
}
.karte-item.is-done .mini-stempel { display: block; }
.karte-item.is-done a { padding-right: 5.5rem; }

/* ---------- 課のページ ---------- */
.layout { padding: 0 clamp(1rem, 4vw, 3rem); }
.layout.with-pfad {
  display: grid; grid-template-columns: 15rem minmax(0, var(--measure)); gap: 3.5rem;
}
.pfad-side { padding-top: 2.75rem; }
.pfad-side .pfad { position: sticky; top: 1rem; max-height: calc(100vh - 2rem); overflow-y: auto; }
.pfad-mobile { display: none; }
.pfad-title { font-size: .8rem; margin: 0 0 .5rem; color: var(--ink-soft); }
.pfad-title a { text-decoration: none; }
.pfad ol { list-style: none; margin: 0; padding: 0; }
.pfad-item a {
  display: grid; grid-template-columns: 3.4rem 1fr auto; gap: .5rem;
  padding: .32rem .4rem; text-decoration: none; font-size: .84rem; line-height: 1.5;
  border-left: 2px solid transparent;
}
.pfad-item a[aria-current="page"] { border-left-color: var(--stamp); background: var(--stamp-wash); }
.pfad-nr { color: var(--ink-soft); font-size: .76rem; padding-top: .1rem; }
.pfad-lektuere .pfad-name { font-family: var(--font-de); }
.pfad-lektuere .pfad-nr { color: var(--stamp); }
.pfad-done { width: .55rem; height: .55rem; border-radius: 50%; margin-top: .45rem; }
.pfad-item.is-done .pfad-done { background: var(--stamp); }

.doc { max-width: var(--measure); padding: 2.75rem 0 0; }
.doc-list { margin: 0 clamp(1rem, 4vw, 3rem); }
.doc-head { margin-bottom: 2.25rem; }
.doc-nr { margin: 0; color: var(--ink-soft); font-size: .9rem; }
.doc-lektuere .doc-nr { color: var(--stamp); font-weight: 700; }
.doc h1 { font-size: clamp(1.6rem, 3.6vw, 2.15rem); line-height: 1.35; margin: .2rem 0 .3rem; font-weight: 700; letter-spacing: .01em; }
.doc-lektuere h1 { font-family: var(--font-de); font-weight: 600; }
.doc-de { margin: 0; font-style: italic; color: var(--ink-soft); font-size: 1.05rem; }
.doc-lead { margin: 1rem 0 0; font-size: 1.02rem; }

.ziel { margin-top: 1.5rem; padding: .9rem 1.1rem; background: var(--card); border-left: 3px solid var(--stamp); }
.ziel-label { margin: 0 0 .2rem; font-size: .8rem; color: var(--ink-soft); }
.ziel-text { margin: 0; font-size: 1.2rem; line-height: 1.55; }

/* ---------- 本文 ---------- */
.prose h2 { font-size: 1.3rem; margin: 3rem 0 .9rem; padding-top: 1.25rem; border-top: 1px solid var(--rule); line-height: 1.5; }
.prose h3 { font-size: 1.05rem; margin: 2rem 0 .5rem; }
.prose p { margin: 0 0 1.05rem; }
.prose ul, .prose ol { padding-left: 1.4rem; margin: 0 0 1.1rem; }
.prose li { margin: .2rem 0; }
.prose strong { font-weight: 700; }
.prose code { font-family: var(--font-de); font-size: 1em; }
.prose hr { border: 0; border-top: 1px solid var(--rule); margin: 2.5rem 0; }

.prose table {
  border-collapse: collapse; margin: 1.25rem 0 1.5rem; font-size: .95rem; width: 100%;
  display: block; overflow-x: auto;
}
.prose th, .prose td { text-align: left; padding: .45rem .9rem .45rem 0; border-bottom: 1px solid var(--rule); vertical-align: top; white-space: nowrap; }
.prose th { font-weight: 700; font-size: .85rem; color: var(--ink-soft); border-bottom-color: var(--ink-soft); }

.prose table.wrap td, .prose td.wrap { white-space: normal; }

.g-m { color: var(--m); } .g-f { color: var(--f); } .g-n { color: var(--n); } .g-pl { color: var(--pl); }

/* 読み上げボタン */
.sprich {
  font: inherit; font-size: .82rem; color: var(--ink); cursor: pointer;
  background: transparent; border: 1px solid var(--rule); border-radius: 99px;
  padding: .15rem .8rem .15rem .6rem; display: inline-flex; align-items: center; gap: .35rem;
}
.sprich::before, .sprich-mini::before {
  content: ""; width: .95em; height: .95em; flex: none;
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M3 9v6h4l5 4V5L7 9H3zm13.5 3a4.5 4.5 0 0 0-2.5-4v8a4.5 4.5 0 0 0 2.5-4zM14 3.2v2.1a7 7 0 0 1 0 13.4v2.1a9 9 0 0 0 0-17.6z'/%3E%3C/svg%3E") center / contain no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M3 9v6h4l5 4V5L7 9H3zm13.5 3a4.5 4.5 0 0 0-2.5-4v8a4.5 4.5 0 0 0 2.5-4zM14 3.2v2.1a7 7 0 0 1 0 13.4v2.1a9 9 0 0 0 0-17.6z'/%3E%3C/svg%3E") center / contain no-repeat;
}
.sprich:hover, .sprich-mini:hover { color: var(--stamp); border-color: var(--stamp); }
.sprich.is-speaking, .sprich-mini.is-speaking { color: var(--stamp); border-color: var(--stamp); }
.sprich-mini {
  display: inline-flex; align-items: center; justify-content: center;
  width: 1.55em; height: 1.55em; margin-left: .2em; vertical-align: -.25em;
  font-size: .78em; color: var(--ink-soft); cursor: pointer;
  background: transparent; border: 1px solid transparent; border-radius: 50%; padding: 0;
}
.no-speech .sprich, .no-speech .sprich-mini { display: none; }

.de { white-space: nowrap; }
.de[lang="de"] { font-size: 1.04em; }

/* 例文 */
.satz-block { margin: 1.1rem 0 1.4rem; padding-left: 1rem; border-left: 2px solid var(--rule); }
.satz-de { font-size: 1.15rem; line-height: 1.6; margin: 0 !important; }
.satz-ja { margin: .2rem 0 0 !important; font-size: .93rem; color: var(--ink-soft); }
.satz-quelle { margin: .2rem 0 0 !important; font-size: .78rem; color: var(--ink-soft); }

/* 逐語訳 */
.gloss { margin: 1.5rem 0 1.9rem; padding: 1.1rem 1.1rem .9rem; background: var(--card); border-radius: var(--radius); }
.gloss-row { display: flex; flex-wrap: wrap; gap: .9rem .85rem; }
.gw { display: flex; flex-direction: column; min-width: 0; }
.gw-de { font-size: 1.22rem; line-height: 1.4; }
.gw-ja { font-family: var(--font-ja); font-size: .8rem; line-height: 1.45; margin-top: .1rem; }
.gw-gr { font-family: var(--font-ja); font-size: .7rem; line-height: 1.4; color: var(--ink-soft); }
.gw.g-m .gw-de { color: var(--m); } .gw.g-f .gw-de { color: var(--f); } .gw.g-n .gw-de { color: var(--n); } .gw.g-pl .gw-de { color: var(--pl); }
.gw.g-m .gw-ja, .gw.g-f .gw-ja, .gw.g-n .gw-ja, .gw.g-pl .gw-ja { color: var(--ink); }
.gloss figcaption { display: flex; flex-wrap: wrap; gap: .6rem 1rem; align-items: baseline; margin-top: 1rem; padding-top: .75rem; border-top: 1px dashed var(--rule); font-size: .93rem; }
.gloss-ja { flex: 1 1 18rem; }

/* カフカ原文 */
.kafka { margin: 1.75rem 0 2rem; }
.kafka blockquote {
  margin: 0; padding: 1.4rem 1.5rem; background: var(--card);
  font-size: 1.13rem; line-height: 1.8;
  border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink);
}
.kafka blockquote p { margin: 0 0 .9rem; text-indent: 1.2em; }
.kafka blockquote p:first-child { text-indent: 0; }
.kafka blockquote p:last-child { margin-bottom: 0; }
.kafka figcaption { display: flex; flex-wrap: wrap; gap: .5rem 1rem; align-items: center; margin-top: .65rem; }

/* 注記 */
.hinweis { margin: 1.5rem 0; padding: .9rem 1.1rem; border: 1px solid var(--rule); border-radius: var(--radius); font-size: .95rem; }
.hinweis > :last-child { margin-bottom: 0; }
.hinweis-titel { font-weight: 700; margin: 0 0 .35rem !important; }
.hinweis-kafka { border-color: var(--stamp); }
.hinweis-kafka .hinweis-titel { color: var(--stamp); }

/* クイズ */
.quiz { margin: 1.5rem 0; padding: 1rem 1.1rem; background: var(--paper-2); border-radius: var(--radius); }
.quiz-frage { margin: 0 0 .7rem !important; font-weight: 500; }
.quiz-opts { display: flex; flex-wrap: wrap; gap: .5rem; }
.quiz-opt {
  font: inherit; font-size: .98rem; color: var(--ink); cursor: pointer;
  background: var(--card); border: 1px solid var(--rule); border-radius: var(--radius);
  padding: .35rem .9rem; text-align: left;
}
.quiz-opt p { margin: 0; }
.quiz-opt:hover:not(:disabled) { border-color: var(--ink-soft); }
.quiz-opt:disabled { cursor: default; }
.quiz-opt.is-right { border-color: var(--n); box-shadow: inset 0 0 0 1px var(--n); }
.quiz-opt.is-wrong { border-color: var(--f); text-decoration: line-through; color: var(--ink-soft); }
.quiz-erkl { margin-top: .8rem; font-size: .93rem; }
.quiz-erkl p { margin: 0 0 .3rem !important; }
.quiz-urteil { font-weight: 700; }

/* 読了スタンプ */
.abschluss { position: relative; margin: 3.5rem 0 1.5rem; padding-top: 2rem; border-top: 1px solid var(--rule); display: flex; align-items: center; gap: 1.5rem; min-height: 5rem; }
.stempel-btn {
  font: inherit; font-size: .95rem; cursor: pointer; color: var(--paper);
  background: var(--ink); border: 1px solid var(--ink); border-radius: var(--radius); padding: .55rem 1.2rem;
}
.stempel-btn[aria-pressed="true"] { background: transparent; color: var(--ink-soft); border-color: var(--rule); font-size: .85rem; }
.stempel-btn .when-on { display: none; }
.stempel-btn[aria-pressed="true"] .when-on { display: inline; }
.stempel-btn[aria-pressed="true"] .when-off { display: none; }
.stempel {
  font-family: var(--font-de); font-weight: 600; font-size: 1.5rem; letter-spacing: .12em;
  color: var(--stamp); border: 3px double var(--stamp); border-radius: 6px;
  padding: .05rem .75rem; transform: rotate(-8deg) scale(1.4); opacity: 0;
  pointer-events: none;
}
.abschluss.is-done .stempel { opacity: .88; transform: rotate(-8deg) scale(1); }
.abschluss.is-animating .stempel { transition: transform .18s cubic-bezier(.3, 1.6, .5, 1), opacity .12s; }

.blaettern { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 1.5rem; font-size: .92rem; }
.blaettern a { text-decoration: none; padding: .8rem 1rem; border: 1px solid var(--rule); border-radius: var(--radius); line-height: 1.5; }
.blaettern a:hover { border-color: var(--stamp); }
.blaettern span { display: block; font-size: .78rem; color: var(--ink-soft); }
.blaettern .next { text-align: right; grid-column: 2; }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .layout.with-pfad { display: block; }
  .pfad-side { display: none; }
  .pfad-mobile { display: block; margin-top: 1rem; border: 1px solid var(--rule); border-radius: var(--radius); background: var(--card); }
  .pfad-mobile summary { cursor: pointer; padding: .6rem .9rem; font-size: .9rem; }
  .pfad-mobile .pfad { padding: 0 .5rem .6rem; }
  .pfad-mobile .pfad-title { display: none; }
  .doc { padding-top: 2rem; }
}
@media (max-width: 560px) {
  body { font-size: 1rem; }
  .site-head { flex-direction: column; gap: .5rem; }
  .karte-item a { grid-template-columns: 3.4rem 1fr; gap: .1rem .75rem; }
  .karte-lektuere a { grid-template-columns: 3.1rem 1fr; }
  .gloss { padding: .9rem .8rem .8rem; margin-left: -.25rem; margin-right: -.25rem; }
  .gw-de { font-size: 1.1rem; }
  .kafka blockquote { padding: 1.1rem 1rem; font-size: 1.06rem; }
  .blaettern { grid-template-columns: 1fr; }
  .blaettern .next { grid-column: 1; }
  .abschluss { flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}
.doc-ja { margin: 0; color: var(--ink-soft); font-size: 1rem; }
.vocab td:first-child { font-family: var(--font-de); }