/* 青空文库助手（新版）样式
   设计方向：保留原站的明朝体/宋体阅读气质，但把版式做成响应式单套模板（审计 E5）。 */
:root {
  --fg: #1b1b1b;
  --muted: #6b6b6b;
  --bg: #fdfcf9;
  --line: #d9d4c8;
  --accent: #11659a;
  --warn: #a3541c;
  --card: #fff;
}
@media (prefers-color-scheme: dark) {
  :root { --fg: #e8e6e1; --muted: #9a9a94; --bg: #17181a; --line: #33363a; --accent: #7fc4ef; --warn: #e0a06a; --card: #1e2023; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font-family: "Noto Serif JP", "Noto Serif SC", "Source Han Serif SC", "源ノ明朝", "Yu Mincho", "Hiragino Mincho ProN", "Songti SC", SimSun, serif;
  line-height: 1.75;
  font-size: 16px;
}
body.view-mobile { font-size: 17px; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: .9em; }

header.site, main, footer.site { max-width: 1180px; margin: 0 auto; padding: 0 14px; }
header.site {
  display: flex; flex-wrap: wrap; gap: 10px; align-items: baseline;
  justify-content: space-between; padding-top: 14px; padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}
.brand { font-size: 1.25em; font-weight: 700; color: var(--fg); }
.switches a { margin-left: 12px; font-size: .92em; }
main { padding: 18px 14px 40px; }
footer.site { border-top: 1px solid var(--line); padding: 16px 14px 40px; color: var(--muted); font-size: .9em; }
.muted { color: var(--muted); }
.small { font-size: .88em; }
.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.na { color: var(--muted); text-align: center; }

/* 首页 */
.hero { max-width: 760px; margin: 3vh auto 0; text-align: center; }
.hero h1 { font-size: 1.9em; margin: 0 0 .2em; letter-spacing: .04em; }
.tagline { color: var(--muted); margin-top: 0; }
form.search { display: flex; gap: 8px; margin: 1.2em 0; }
form.search input[type=search] {
  flex: 1; min-width: 0; padding: 12px 14px; font: inherit; color: var(--fg); background: var(--card);
  border: 2px solid var(--line); border-radius: 8px;
}
form.search input[type=search]:focus { outline: none; border-color: var(--accent); }
form.search button {
  padding: 12px 20px; font: inherit; cursor: pointer; border-radius: 8px;
  border: 2px solid var(--accent); background: var(--accent); color: #fff;
}
form.search.compact { margin: .4em 0 1em; max-width: 640px; }
.reasons { text-align: left; color: var(--muted); font-size: .92em; margin: .6em auto; max-width: 640px; }

/* 结果表 */
.resultbar { display: flex; flex-wrap: wrap; gap: 10px 18px; align-items: baseline; margin: .4em 0 .8em; }
.resultbar .count { font-weight: 700; }
.resultbar .warn { color: var(--warn); font-size: .9em; }
.sorts a.sort { margin-right: 8px; padding: 2px 8px; border: 1px solid var(--line); border-radius: 999px; font-size: .9em; }
.sorts a.sort.on { border-color: var(--accent); background: var(--accent); color: #fff; }
.tablewrap { overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--line); border-radius: 8px; }
table.books { border-collapse: collapse; width: 100%; font-size: .95em; }
table.books th, table.books td { padding: 7px 9px; border-bottom: 1px solid var(--line); text-align: center; }
table.books thead th { position: sticky; top: 0; background: var(--card); font-weight: 600; white-space: nowrap; }
table.books td.title { text-align: left; min-width: 12em; }
table.books td.author { white-space: nowrap; }
table.books td.title .sub { display: block; color: var(--muted); font-size: .86em; }
table.books small { font-size: .85em; }
body.view-mobile table.books .opt { display: none; }
/* 窄屏也收起可选列：不依赖 UA —— 有些手机浏览器会伪装成桌面 UA，
   如果只按 body class 判断，这些设备就会看到 15 列的横向滚动表。 */
@media (max-width: 720px) {
  table.books .opt { display: none; }
  body { font-size: 17px; }
  header.site { flex-direction: column; align-items: flex-start; gap: 4px; }
  .switches a { margin-left: 0; margin-right: 14px; }
  .hero { margin-top: 1vh; }
  .hero h1 { font-size: 1.5em; }
}

.pager { display: flex; flex-wrap: wrap; gap: 14px; align-items: baseline; margin: 1em 0; }
.pager .perpage a { margin-left: 6px; }
.pager a.on { font-weight: 700; text-decoration: underline; }

/* 详情页 */
.book h1 { margin-bottom: .1em; }
.book .sub { color: var(--muted); margin-top: 0; }
dl.meta { display: grid; grid-template-columns: max-content 1fr; gap: 2px 14px; margin: 1em 0; }
dl.meta dt { color: var(--muted); }
dl.meta dd { margin: 0; }
ul.downloads { display: flex; flex-wrap: wrap; gap: 10px; list-style: none; padding: 0; }
ul.downloads li a { display: inline-block; padding: 8px 14px; border: 1px solid var(--line); border-radius: 8px; }
ul.downloads li a:hover { border-color: var(--accent); }

.learning .cards { display: flex; flex-wrap: wrap; gap: 12px; }
.learning .card {
  flex: 1 1 180px; background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px;
}
.learning .card .k { display: block; color: var(--muted); font-size: .86em; }
.learning .card .v { display: block; font-size: 1.5em; font-weight: 700; }
table.levels { border-collapse: collapse; margin: 1em 0; }
table.levels th, table.levels td { border: 1px solid var(--line); padding: 5px 12px; text-align: center; }
details { margin: .8em 0; }
details summary { cursor: pointer; font-weight: 600; }
ul.grammar { list-style: none; padding-left: 0; }
ul.grammar li { border-bottom: 1px dotted var(--line); padding: 4px 0; }

.error { max-width: 640px; margin: 8vh auto; text-align: center; }
.error .code { font-size: 3em; font-weight: 700; color: var(--muted); }

/* 搜索页的 PDF 开关（用户 2026-09-24）。放在排序条右侧，做成一个小按钮的样子。 */
.resultbar .pdftoggle { margin-left: .8rem; padding: .15rem .55rem; border: 1px solid #bbb;
  border-radius: .25rem; font-size: .85rem; text-decoration: none; white-space: nowrap; }
.resultbar .pdftoggle:hover { background: #f0f0f0; }

/* 分类列现在放的是名字（小説・物語 など）。折り返すと読みにくいので一行に保つ。 */
.books td.type { white-space: nowrap; }

/* ホバーで説明が出る要素の「気づき」用（2026-11-05 ユーザー指示） */
abbr[title], .hint {
  cursor: help;
  text-decoration: none;
  border-bottom: 1px dotted currentColor;
  text-underline-offset: 2px;
}


ul.cards { list-style: none; margin: 0; padding: 0; }
ul.cards li.card { padding: 7px 4px; border-bottom: 1px solid rgba(128,128,128,.25); }
ul.cards .c1 { display: flex; justify-content: space-between; gap: 8px; align-items: baseline; }
ul.cards .c1 .t { font-size: 16px; font-weight: 600; }
ul.cards .c1 .a { color: #777; font-size: 13px; white-space: nowrap; }
ul.cards .c2 { margin-top: 3px; display: flex; flex-wrap: wrap; gap: 5px; align-items: center; }
ul.cards .c2 a { font-size: 13px; padding: 0 7px; border: 1px solid rgba(128,128,128,.45); border-radius: 9px; text-decoration: none; }
ul.cards .c2 a.det { margin-left: auto; border-color: transparent; color: #777; }

/* 备案号リンク：目立たせない（色は地の文と同じ・下線は hover だけ） */
.beian-l { color: inherit; text-decoration: none; opacity: .85; }
.beian-l:hover { text-decoration: underline; }