:root {
  --bg: #e5e5e5;
  --bar: rgba(255, 255, 255, .45);
  --text: #3f3b3a;
  --ink: #1c1b1b;
  --muted: #9fa0a0;
  --line: rgba(63, 59, 58, .16);
  --accent: #8a2b2b;
  color-scheme: light;
  --serif: YuMincho, "Yu Mincho", "Hiragino Mincho ProN", "Noto Serif JP", "Noto Serif TC", "PMingLiU", serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; min-height: 100vh; background: var(--bg); color: var(--text);
  font-family: var(--serif); font-size: 14px; line-height: 1.9; letter-spacing: .06em;
}
[hidden] { display: none !important; }
button { font: inherit; letter-spacing: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
a { color: inherit; }
button:focus-visible, a:focus-visible, summary:focus-visible, input:focus-visible { outline: 1px solid var(--ink); outline-offset: 4px; }

/* ---- 頂欄 ---- */
.topbar {
  position: sticky; top: 0; z-index: 10; height: 80px; padding: 0 20px;
  display: flex; align-items: center; justify-content: space-between;
  background: var(--bar); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
}
.logo { font-size: 38px; line-height: 1; color: var(--ink); text-decoration: none; letter-spacing: 0; }
.brand { font-size: 12px; letter-spacing: .3em; color: var(--ink); }

.wrap { max-width: 760px; margin: 0 auto; padding: 56px 20px 40px; }
.lead { margin: 0 0 36px; font-size: 13px; color: var(--muted); }

/* ---- 搜尋 ---- */
.search { display: flex; align-items: center; gap: 12px; border-bottom: 1px solid var(--ink); padding-bottom: 6px; }
.label-en { font-size: 14px; letter-spacing: .14em; color: var(--muted); text-transform: uppercase; }
#q {
  flex: 1; min-width: 0; border: 0; outline: 0; background: transparent; color: var(--ink);
  font: inherit; font-size: 20px; letter-spacing: .08em; padding: 8px 0; border-radius: 0;
}
#q::placeholder { color: var(--muted); font-size: 15px; }
.submit { font-size: 14px; letter-spacing: .2em; color: var(--ink); padding: 8px 4px; transition: opacity .2s; }
.submit:hover { opacity: .55; }
.submit:disabled { opacity: .4; cursor: progress; }
.ghost { color: var(--muted); font-size: 14px; padding: 4px 6px; }
.ghost:hover { color: var(--ink); }

.history { display: flex; align-items: baseline; flex-wrap: wrap; gap: 6px 18px; margin-top: 18px; font-size: 13px; }
.label { color: var(--muted); letter-spacing: .14em; font-size: 12px; }
.chips { display: flex; flex-wrap: wrap; gap: 4px 16px; }
.chip { border-bottom: 1px solid transparent; }
.chip:hover { border-bottom-color: var(--ink); color: var(--ink); }
.link { margin-left: auto; color: var(--muted); font-size: 12px; }
.link:hover { color: var(--ink); }
.hint { margin: 16px 0 0; font-size: 13px; color: var(--accent); }

/* ---- 結果 ---- */
#results { margin-top: 56px; }
.bar { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
h2.query { margin: 0; font-weight: 400; font-size: 22px; letter-spacing: .1em; color: var(--ink); }
.status { margin: 0; font-size: 12px; color: var(--muted); }
.sources { list-style: none; margin: 14px 0 0; line-height: 1.8; padding: 0; display: flex; flex-wrap: wrap; gap: 4px 20px; font-size: 12px; color: var(--muted); }
.sources a { text-decoration: none; border-bottom: 1px solid var(--line); }
.sources a:hover { color: var(--ink); border-bottom-color: var(--ink); }
.sources .st::before { content: "— "; }
.sources .src-error .st { color: var(--accent); }

.group { margin-top: 56px; }
.group-title { margin: 0 0 14px; font-weight: 400; font-size: 14px; letter-spacing: .14em; color: var(--muted); text-transform: uppercase; }

details.entry { border-top: 1px solid var(--line); animation: fade .5s both; }
details.entry:last-child { border-bottom: 1px solid var(--line); }
summary {
  list-style: none; cursor: pointer; display: flex; align-items: baseline; gap: 18px; padding: 16px 0; color: var(--ink);
}
summary::-webkit-details-marker { display: none; }
summary::before { content: ">"; flex: none; width: 14px; color: var(--muted); transition: transform .25s; display: inline-block; }
details[open] > summary::before { transform: rotate(90deg); }
summary:hover .dict { opacity: .6; }
.dict { transition: opacity .2s; }
.headword { color: var(--muted); font-size: 13px; margin-left: auto; text-align: right; }
.content { padding: 0 0 22px 32px; }
.body { margin: 0; white-space: pre-line; line-height: 2; color: var(--text); }
.efoot { display: flex; align-items: baseline; gap: 22px; margin-top: 14px; font-size: 12px; letter-spacing: .12em; flex-wrap: wrap; }
.toggle, .more { color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--ink); padding-bottom: 1px; }
.toggle:hover, .more:hover { opacity: .55; }
.more { color: var(--muted); border-bottom-color: var(--line); }

.empty { margin: 40px 0; color: var(--muted); }
.skel { padding: 18px 0; border-top: 1px solid var(--line); }
.skel .line { height: 10px; margin: 12px 0 12px 32px; background: linear-gradient(90deg, var(--line), transparent, var(--line)); background-size: 200% 100%; animation: shimmer 1.4s infinite; }
.skel .w30 { width: 30%; } .skel .w60 { width: 60%; }

footer { margin-top: 96px; padding-top: 24px; border-top: 1px solid var(--line); font-size: 12px; color: var(--muted); }

@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
@keyframes shimmer { from { background-position: 200% 0; } to { background-position: -200% 0; } }
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }
@media (max-width: 520px) {
  .topbar { height: 64px; }
  .wrap { padding-top: 40px; }
  #q { font-size: 18px; }
  .label-en { display: none; }
  summary { flex-wrap: wrap; gap: 4px 14px; }
  .headword { margin-left: 28px; text-align: left; width: 100%; }
  .content { padding-left: 28px; }
}

/* ---- アクセント ---- */
.accents { margin-top: 48px; }
.accent-row { display: flex; align-items: baseline; flex-wrap: wrap; gap: 6px 22px; padding: 14px 0; border-top: 1px solid var(--line); }
.accent-row:last-child { border-bottom: 1px solid var(--line); }
.aword { font-size: 14px; color: var(--muted); min-width: 4em; }
.kana { font-size: 24px; color: var(--ink); letter-spacing: .12em; }
.mora { display: inline-block; padding: 0 1px; border-top: 2px solid transparent; }
.mora.hi { border-top-color: var(--ink); }
.mora.drop { border-right: 2px solid var(--ink); margin-right: 2px; }
.anum { font-size: 14px; color: var(--ink); }
.atype { font-size: 12px; color: var(--muted); letter-spacing: .14em; }

/* 件数をクリックすると取得状況を表示 */
button.status { cursor: pointer; letter-spacing: .14em; }
button.status:empty { display: none; }
button.status:not(:empty)::after { content: " ▾"; font-size: 10px; }
button.status[aria-expanded="true"]::after { content: " ▴"; }
button.status:hover { color: var(--ink); }

/* ---- 翻訳 ---- */
.translation { margin-top: 18px; padding: 14px 0 0 18px; border-left: 1px solid var(--ink); }
.tr-label { font-size: 12px; letter-spacing: .2em; color: var(--muted); margin-bottom: 4px; }
.tr-error { margin: 0; font-size: 13px; color: var(--accent); }
.toggle:disabled { opacity: .5; cursor: progress; }

/* ---- 文ごとの翻訳ボタン ---- */
.s-tr {
  display: inline-block; margin: 0 6px 0 4px; padding: 0 6px; font-size: 11px; line-height: 1.7; letter-spacing: .05em;
  color: var(--muted); text-decoration: none; border: 1px solid var(--line); border-radius: 3px; vertical-align: 1px;
  transition: color .15s, border-color .15s;
}
.s-tr:hover { color: var(--ink); border-color: var(--ink); }

/* ---- 文ごとの翻訳 ---- */
button.s-tr { font: inherit; font-size: 11px; cursor: pointer; background: none; }
.s-tr:disabled { opacity: .5; cursor: progress; }
.s-out { display: block; margin: 4px 0 8px; padding: 2px 0 2px 12px; border-left: 2px solid var(--ink); color: var(--ink); font-size: 13px; line-height: 1.8; white-space: normal; }
.s-out.err { border-left-color: var(--accent); color: var(--accent); }

/* ---- 訳ボタンの表示切り替え（初期は非表示） ---- */
.bar { gap: 8px 22px; }
.bar h2.query { margin-right: auto; }
.tool { font-size: 12px; letter-spacing: .14em; color: var(--muted); cursor: pointer; padding: 0 0 1px; border-bottom: 1px solid var(--line); }
.tool:hover { color: var(--ink); }
.tool[aria-pressed="true"] { color: var(--ink); border-bottom-color: var(--ink); }
body:not(.show-tr) .s-tr, body:not(.show-tr) .s-out { display: none !important; }

/* ---- ログイン画面 ---- */
.logout { margin-left: 22px; font-size: 11px; letter-spacing: .14em; color: var(--muted); text-decoration: none; border-bottom: 1px solid var(--line); }
.logout:hover { color: var(--ink); border-bottom-color: var(--ink); }
.login { max-width: 420px; }
.login-field { display: block; margin-bottom: 28px; }
.login-field .label-en { display: block; font-size: 12px; margin-bottom: 4px; }
.login-field input {
  width: 100%; border: 0; border-bottom: 1px solid var(--ink); background: transparent; color: var(--ink);
  font: inherit; font-size: 18px; letter-spacing: .08em; padding: 8px 0; border-radius: 0; outline: 0;
}
.login-field input:focus-visible { outline: 0; border-bottom-width: 2px; }
.login-err { margin: -8px 0 20px; font-size: 13px; color: var(--accent); }
.login-btn { display: block; width: 100%; padding: 12px 4px; border: 1px solid var(--ink); text-align: center; }
.login-btn:hover { background: var(--ink); color: var(--bg); opacity: 1; }