/* lifelab-unit — 落ち着いた読みもの向けスタイル（モバイル優先・ライト／ダーク対応） */
:root {
  --font-ui: "Noto Sans JP", "Hiragino Sans", "Yu Gothic UI", "Meiryo", system-ui, sans-serif;
  --font-read: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", "MS PMincho", serif;
  --bg: #f7f4ee;
  --bg-elev: #fffdf9;
  --fg: #2b2723;
  --fg-muted: #6f6861;
  --line: #e3dcd1;
  --accent: #6b5a3e;
  --accent-fg: #ffffff;
  --accent-soft: #efe7d8;
  --ok: #3f7a52;
  --ok-soft: #e3f0e6;
  --danger: #a3473f;
  --danger-soft: #f6e3e0;
  --focus: #b8862f;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(40, 30, 10, .06), 0 6px 24px rgba(40, 30, 10, .06);
  --read-size: 1.08rem;
  --read-lh: 1.95;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1b1916;
    --bg-elev: #242019;
    --fg: #ece6dc;
    --fg-muted: #a69d90;
    --line: #3a342c;
    --accent: #d2b27a;
    --accent-fg: #1b1916;
    --accent-soft: #332d23;
    --ok: #8fcaa0;
    --ok-soft: #22302a;
    --danger: #e3938b;
    --danger-soft: #3a2422;
    --focus: #e3b85a;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .3);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--fg); font-family: var(--font-ui);
  font-size: 16px; line-height: 1.7; overflow-x: hidden; min-height: 100dvh;
  display: flex; flex-direction: column;
}
a { color: var(--accent); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.skip { position: absolute; left: -999px; top: 0; background: var(--accent); color: var(--accent-fg); padding: .5rem 1rem; z-index: 100; }
.skip:focus { left: .5rem; top: .5rem; }
[hidden] { display: none !important; }
code { font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace; font-size: .95em; }

/* ---- header / footer ---- */
.site-header {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: .8rem max(1rem, env(safe-area-inset-left)) .8rem max(1rem, env(safe-area-inset-right));
  border-bottom: 1px solid var(--line); background: var(--bg-elev);
}
.brand { text-decoration: none; color: var(--fg); display: flex; flex-direction: column; min-width: 0; }
.brand-title { font-family: var(--font-read); font-weight: 600; font-size: 1.05rem; letter-spacing: .02em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.brand-sub { font-size: .78rem; color: var(--fg-muted); }
.site-nav { display: flex; gap: .5rem; align-items: center; flex-shrink: 0; }
.nav-link { color: var(--accent); text-decoration: none; padding: .55rem .7rem; border-radius: 8px; font-size: .95rem; min-height: 44px; display: inline-flex; align-items: center; }
.nav-link:hover { background: var(--accent-soft); }
.nav-muted { color: var(--fg-muted); }
.inline-form { display: inline; margin: 0; }
.btn-link { background: none; border: 0; cursor: pointer; font: inherit; }
.site-main { flex: 1; width: 100%; max-width: 46rem; margin: 0 auto; padding: 1rem 1rem 3rem; }
.site-footer { text-align: center; color: var(--fg-muted); font-size: .8rem; padding: 1.5rem 1rem; border-top: 1px solid var(--line); }

/* ---- buttons / fields ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  min-height: 44px; padding: .55rem 1.1rem; border-radius: 10px; border: 1px solid var(--line);
  background: var(--bg-elev); color: var(--fg); font: inherit; font-size: 1rem; cursor: pointer; text-decoration: none;
  transition: background .15s, transform .05s;
}
.btn:hover { background: var(--accent-soft); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }
.btn-primary:hover { filter: brightness(1.08); background: var(--accent); }
.btn-ghost { background: transparent; }
.btn-danger { color: var(--danger); border-color: var(--danger); }
.btn-danger:hover { background: var(--danger-soft); }
.btn-sm { min-height: 40px; padding: .4rem .8rem; font-size: .92rem; }
.btn-wide { width: 100%; }
.btn-toggle[aria-pressed="true"] { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }
.field { display: block; margin: .6rem 0 1rem; }
.field-label { display: block; font-size: .9rem; color: var(--fg-muted); margin-bottom: .35rem; }
.field-inline { display: inline-flex; align-items: center; gap: .4rem; font-size: .9rem; color: var(--fg-muted); }
.input, .textarea, .select {
  width: 100%; font: inherit; font-size: 1.05rem; color: var(--fg); background: var(--bg-elev);
  border: 1px solid var(--line); border-radius: 10px; padding: .7rem .8rem; min-height: 48px;
}
.textarea { font-family: var(--font-ui); line-height: 1.7; resize: vertical; min-height: 14rem; }
.select { width: auto; min-height: 40px; padding: .4rem .6rem; font-size: .92rem; max-width: 60vw; }
.msg { min-height: 1.4em; margin: .3rem 0; font-size: .95rem; color: var(--fg-muted); }
.msg-error, .msg.is-error { color: var(--danger); }
.msg.is-ok { color: var(--ok); }
.muted { color: var(--fg-muted); }
.small { font-size: .85rem; }
.row { display: flex; flex-wrap: wrap; gap: .5rem; margin: .5rem 0; }

/* ---- badges ---- */
.badge { display: inline-block; font-size: .72rem; padding: .1rem .5rem; border-radius: 999px; background: var(--accent-soft); color: var(--accent); white-space: nowrap; }
.badge-ok { background: var(--ok-soft); color: var(--ok); }
.badge-muted { background: var(--line); color: var(--fg-muted); }
.badge-admin { background: var(--danger-soft); color: var(--danger); }

/* ---- landing ---- */
.hero { text-align: center; padding: 1.2rem 0 1.4rem; }
.hero-title { font-family: var(--font-read); font-weight: 600; font-size: clamp(1.5rem, 5vw, 2.1rem); margin: 0 0 .3rem; letter-spacing: .03em; }
.hero-sub { margin: 0; color: var(--fg-muted); }
.hero-note { margin: .8rem auto 0; max-width: 34rem; font-size: .9rem; color: var(--fg-muted); }
.page-grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr; gap: .6rem; }
@media (min-width: 640px) { .page-grid { grid-template-columns: 1fr 1fr; } }
.page-item { min-width: 0; }
.page-link {
  display: grid; grid-template-columns: auto 1fr; grid-template-rows: auto auto; column-gap: .8rem; align-items: center;
  padding: .85rem 1rem; min-height: 64px; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--bg-elev); color: var(--fg); text-decoration: none; box-shadow: var(--shadow);
}
.page-link:hover { border-color: var(--accent); }
.page-no { grid-row: 1 / span 2; font-family: var(--font-read); font-weight: 600; color: var(--accent); font-size: 1rem; white-space: nowrap; }
.page-title { font-family: var(--font-read); font-size: 1.1rem; line-height: 1.5; word-break: break-word; }
.page-badges { font-size: .75rem; display: flex; gap: .3rem; flex-wrap: wrap; }
.page-link.state-nokey { opacity: .6; }
.page-link.state-open .page-no::after { content: ""; }

/* ---- modal ---- */
.modal { position: fixed; inset: 0; z-index: 50; display: grid; place-items: center; padding: 1rem; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(0, 0, 0, .45); }
.modal-card { position: relative; width: min(100%, 26rem); background: var(--bg-elev); border-radius: var(--radius); padding: 1.3rem 1.2rem 1rem; box-shadow: var(--shadow); }
.modal-title { margin: 0 0 .2rem; font-size: 1.2rem; }
.modal-page { margin: 0 0 .6rem; color: var(--fg-muted); font-size: .95rem; }
.modal-actions { display: flex; justify-content: flex-end; gap: .5rem; margin-top: .4rem; }

/* ---- reading page ---- */
.page-nav { display: grid; grid-template-columns: 1fr auto 1fr; gap: .5rem; align-items: center; margin: .2rem 0 1rem; }
.page-nav .nav-btn { display: inline-flex; align-items: center; min-height: 44px; padding: .4rem .6rem; border-radius: 10px; text-decoration: none; color: var(--accent); font-size: .95rem; white-space: nowrap; }
.page-nav .nav-btn:hover { background: var(--accent-soft); }
.page-nav .nav-btn:last-child { justify-self: end; }
.nav-home { justify-self: center; }
.page-head { text-align: center; padding: .8rem 0 1.4rem; border-bottom: 1px solid var(--line); margin-bottom: 1.4rem; }
.page-kicker { margin: 0; color: var(--fg-muted); letter-spacing: .1em; }
.page-title { font-family: var(--font-read); font-weight: 600; font-size: clamp(1.5rem, 5.5vw, 2rem); margin: .2rem 0 0; line-height: 1.4; }
.sec { margin: 0 0 2.4rem; padding: 0 0 2rem; border-bottom: 1px dashed var(--line); }
.sec:last-of-type { border-bottom: 0; }
.sec-head { margin-bottom: .8rem; }
.sec-book { margin: 0; font-size: .85rem; color: var(--fg-muted); letter-spacing: .04em; }
.sec-title { font-family: var(--font-read); font-weight: 600; font-size: 1.35rem; margin: .15rem 0 0; line-height: 1.5; }
.md { font-family: var(--font-read); font-size: var(--read-size); line-height: var(--read-lh); overflow-wrap: anywhere; }
.md p { margin: 0 0 1.1em; text-align: justify; }
.md h1, .md h2, .md h3, .md h4 { font-family: var(--font-read); font-weight: 600; line-height: 1.5; margin: 1.6em 0 .6em; }
.md h1 { font-size: 1.4rem; } .md h2 { font-size: 1.25rem; } .md h3 { font-size: 1.12rem; } .md h4 { font-size: 1.02rem; }
.md blockquote { margin: 1.2em 0; padding: .8em 1em; border-left: 4px solid var(--accent); background: var(--accent-soft); border-radius: 0 10px 10px 0; }
.md blockquote p { margin: 0; }
.md strong { font-weight: 600; }
.md ul, .md ol { padding-left: 1.4em; }
.md li { margin: .3em 0; }
.md hr { border: 0; border-top: 1px solid var(--line); margin: 1.6em 0; }
.md table { border-collapse: collapse; width: 100%; font-family: var(--font-ui); font-size: .92rem; margin: 1em 0; display: block; overflow-x: auto; }
.md th, .md td { border: 1px solid var(--line); padding: .4em .6em; text-align: left; vertical-align: top; }
.md th { background: var(--accent-soft); }
.md img { max-width: 100%; height: auto; }
.md pre { overflow-x: auto; background: var(--accent-soft); padding: .8em; border-radius: 10px; font-size: .9rem; }
.md-raw { white-space: pre-wrap; font-family: var(--font-read); }
.locked-box { text-align: center; padding: 2rem 1rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-elev); display: flex; flex-direction: column; gap: .8rem; align-items: center; }
.locked-msg { margin: 0; font-size: 1.05rem; }

/* ---- editor ---- */
.admin-bar { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: .6rem; margin-top: 1rem; }
.admin-hint { font-size: .85rem; color: var(--fg-muted); }
.editor { margin-top: 1rem; padding: 1rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-elev); text-align: left; }
.editor-bar { display: flex; flex-wrap: wrap; gap: .6rem; align-items: center; justify-content: space-between; }
.editor-status { font-size: .9rem; color: var(--fg-muted); }
.editor-status.is-ok { color: var(--ok); }
.editor-status.is-error { color: var(--danger); }
.editor-status.is-dirty { color: var(--accent); }
.editor-actions { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; }
body.editing .md[data-md-view] { opacity: .92; }

/* ---- auth ---- */
.auth { max-width: 24rem; margin: 2rem auto; }
.auth-title { font-family: var(--font-read); font-size: 1.5rem; text-align: center; }

/* ---- admin ---- */
.unito-entry { margin-top: 2rem; text-align: center; }
.unito-entry a { display: inline-flex; min-height: 44px; padding: .6rem 1rem; align-items: center; }
.admin-search { margin: 1.2rem 0; }
.admin-tabs { display: flex; flex-wrap: wrap; gap: .45rem; margin: 1rem 0; }
.admin-tabs .btn { min-height: 44px; }
.admin-search .field { max-width: 40rem; }
#unito-form { margin: 0; }
.admin-title { font-family: var(--font-read); font-size: 1.5rem; }
.admin-cards { display: grid; gap: 1rem; grid-template-columns: 1fr; }
@media (min-width: 760px) { .admin-cards { grid-template-columns: 1fr 1fr; } .admin-page .site-main { max-width: 64rem; } }
.card { border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-elev); padding: 1rem 1.1rem; }
.card-title { margin: 0 0 .5rem; font-size: 1.1rem; }
.table-wrap { overflow-x: auto; margin-top: 1rem; -webkit-overflow-scrolling: touch; }
.key-table { border-collapse: collapse; width: 100%; font-size: .95rem; }
.key-table th, .key-table td { border-bottom: 1px solid var(--line); padding: .55rem .5rem; vertical-align: top; text-align: left; }
.key-table th { font-weight: 600; color: var(--fg-muted); font-size: .85rem; }
.col-no { white-space: nowrap; }
.col-actions { white-space: nowrap; }
.col-actions .btn { margin: .1rem .1rem .1rem 0; }
.key-state.is-set { color: var(--ok); }
.key-state.is-unset { color: var(--fg-muted); }
.key-value { display: block; margin-top: .2rem; font-size: 1rem; user-select: all; }
@media (max-width: 640px) {
  .key-table thead { display: none; }
  .key-table tr { display: grid; grid-template-columns: auto 1fr; gap: .2rem .6rem; padding: .6rem 0; border-bottom: 1px solid var(--line); }
  .key-table td { border: 0; padding: .1rem 0; }
  .col-title { grid-column: 2; }
  .col-key, .col-actions { grid-column: 1 / -1; }
}