/* unmask docs — /docs/ 系ページ共通 stylesheet.
   /style.css (= LP 専用 class 体系) の後に読み込む前提.  :root 変数を共有する.
   対象: /docs/ , /ja/docs/ , /docs/lb-setup/ , /docs/ja4/ */

/* layout (= topnav / .wrap) は LP の /style.css をそのまま使う.
   docs 固有 class のみを以下で定義する. */

/* -------- docs head -------- */
.docs-head{background:var(--bg-alt);border-bottom:1px solid var(--line);padding:2.5rem 0 2rem;margin-bottom:1.5rem}
.page-title{font-size:2rem;font-weight:800;margin:0 0 .3rem;letter-spacing:-.02em}
.page-lede{font-size:1rem;color:var(--fg-mute);margin:0;line-height:1.7}
.docs-meta{font-size:.85rem;color:var(--fg-light);margin:.4rem 0}

/* -------- docs tabs -------- */
.docs-tabs{display:flex;gap:.35rem;border-bottom:1px solid var(--line);margin:0 0 1.5rem}
.dt-btn{
  font:inherit;font-size:.92rem;font-weight:600;
  padding:.6rem 1.1rem;border:1px solid transparent;border-bottom:none;
  background:transparent;color:var(--fg-light);
  border-radius:.4rem .4rem 0 0;cursor:pointer;margin-bottom:-1px;
  text-decoration:none;display:inline-block;
}
.dt-btn:hover{color:var(--fg);background:var(--bg-alt)}
.dt-link{margin-left:auto;color:var(--accent,#3b82f6)}
.dt-link:hover{color:var(--accent,#3b82f6)}
.dt-btn.active{
  color:var(--fg);background:var(--bg);
  border-color:var(--line);border-bottom-color:var(--bg);font-weight:700;
}
.docs-pane{display:none}
.docs-pane.active{display:block}

/* -------- card -------- */
.bcd-card{
  background:var(--bg);border:1px solid var(--line);border-radius:.6rem;
  padding:1.25rem 1.5rem;margin-bottom:1.25rem;
}
.bcd-card h2{font-size:1.2rem;font-weight:700;margin:0 0 .8rem;letter-spacing:-.01em}
.bcd-card h3{font-size:1rem;font-weight:700;margin:0 0 .4rem}
.bcd-card p{font-size:.92rem;color:var(--fg-mute);line-height:1.75;margin:.5rem 0}
.bcd-card ul,.bcd-card ol{font-size:.9rem;color:var(--fg-mute);line-height:1.8;padding-left:1.4rem}

/* -------- flow 図 (= pre) -------- */
.bcd-flow{
  background:var(--bg-dark);color:#e2e8f0;
  padding:1rem 1.2rem;border-radius:.5rem;
  font-family:'JetBrains Mono',ui-monospace,Menlo,Consolas,monospace;
  font-size:.8rem;line-height:1.7;overflow-x:auto;white-space:pre;margin:.4rem 0;
}
.branch{color:#fbbf24;font-weight:700}
.pass{color:#4ade80;font-weight:700}
.block{color:#f87171;font-weight:700}

/* -------- legend (= dl) -------- */
.bcd-legend{margin:0}
.bcd-legend dt{font-weight:700;color:var(--fg);margin:.9rem 0 .25rem;font-size:.95rem}
.bcd-legend dt:first-child{margin-top:0}
.bcd-legend dd{margin:0 0 .5rem;font-size:.9rem;color:var(--fg-mute);line-height:1.8}
.bcd-legend dd ul{margin:.3rem 0}

/* -------- code -------- */
.code{
  background:var(--bg-dark);color:#e2e8f0;
  padding:.7rem .9rem;border-radius:.4rem;
  font-family:'JetBrains Mono',ui-monospace,Menlo,Consolas,monospace;
  font-size:.8rem;line-height:1.65;overflow-x:auto;white-space:pre;margin:.5rem 0;
}
.code .k{color:#93c5fd}
.code .c{color:#94a3b8}
.code .ok{color:#4ade80}
.code .ng{color:#f87171}
pre.cmd{
  background:var(--bg-dark);color:#e2e8f0;
  padding:.7rem .9rem;border-radius:.4rem;
  font-family:'JetBrains Mono',ui-monospace,Menlo,Consolas,monospace;
  font-size:.8rem;line-height:1.65;overflow-x:auto;white-space:pre;margin:.4rem 0;
}
pre.cmd .k{color:#93c5fd}
pre.cmd .c{color:#94a3b8}

/* -------- code-block copy button (injected by the docs JS) -------- */
/* the button is appended inside pre.code, so the pre needs a positioning
   context for the absolute top-right placement. */
pre.code,pre.cmd{position:relative}
.copy-btn{
  position:absolute;top:.4rem;right:.4rem;
  background:#1e293b;color:#cbd5e1;border:1px solid #334155;
  border-radius:.2rem;font-size:.7rem;padding:.15rem .45rem;
  cursor:pointer;font-family:inherit;line-height:1.4;
}
.copy-btn:hover{background:#334155;color:#fff}
.copy-btn.copied{background:#16a34a;color:#fff;border-color:#16a34a}

/* -------- callout -------- */
.callout{
  background:var(--bg-alt);border-left:.25rem solid var(--fg-light);
  padding:.7rem .95rem;border-radius:.3rem;margin:.7rem 0;
  font-size:.88rem;line-height:1.7;color:var(--fg-mute);
}
.callout.warn{border-left-color:#f97316;background:#fff7ed}
.callout.tip{border-left-color:var(--pass);background:var(--pass-bg)}
.callout b,.callout strong{color:var(--fg)}

/* -------- step heading -------- */
.step-h{font-weight:700;color:var(--fg);margin:.9rem 0 .35rem;font-size:.95rem}

/* -------- install: 環境選択 -------- */
.choice-row{display:flex;gap:1rem;flex-wrap:wrap;margin:.5rem 0 1rem}
.field{display:flex;flex-direction:column;gap:.3rem}
.field label{font-size:.78rem;color:var(--fg-light);font-weight:600}
.field select,.field input{
  padding:.45rem .6rem;border:1px solid var(--line);border-radius:.3rem;
  font:inherit;font-size:.92rem;background:var(--bg);min-width:16rem;
}

/* -------- install: mode 比較 -------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:.9rem;margin:.6rem 0}
.compare .col{
  border:1px solid var(--line);border-radius:.5rem;padding:.9rem 1.1rem;cursor:pointer;
  transition:border-color .12s,box-shadow .12s;
}
.compare .col:hover{border-color:var(--accent)}
.compare .col.recommend{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent) inset}
.compare .col.selected{border-color:var(--accent);box-shadow:0 0 0 2px rgba(37,99,235,.18)}
.compare .col h3{font-size:1rem;margin:0 0 .5rem}
.compare .pros{list-style:none;padding:0;margin:0;font-size:.85rem;line-height:1.7}
.compare .pros li{margin:.25rem 0;color:var(--fg-mute)}
.compare .pros li.con{color:var(--fg-light)}

/* -------- install: os-block 出し分け -------- */
.os-block{margin:.4rem 0}
.hide{display:none !important}

/* -------- example tab (= docs overview) -------- */
.example-block{margin:.5rem 0}
.example-tabs{display:flex;gap:.3rem;margin:.35rem 0;align-items:center;flex-wrap:wrap}
.example-tabs .tab-label{font-size:.72rem;color:var(--fg-light);margin-right:.25rem;font-weight:600;min-width:3.5rem}
.example-tabs button{
  font:inherit;font-size:.78rem;padding:.25rem .65rem;
  border:1px solid var(--line);background:var(--bg-alt);color:var(--fg-mute);
  border-radius:.25rem;cursor:pointer;
}
.example-tabs button.active{background:var(--accent);color:#fff;border-color:var(--accent)}

/* -------- FAQ -------- */
.faq{margin:0}
.faq dt{font-weight:700;color:var(--fg);font-size:1.02rem;line-height:1.5;margin:1.5rem 0 .5rem;padding-left:1.7rem;position:relative}
.faq dt:first-child{margin-top:0}
.faq dt::before{content:"Q";position:absolute;left:0;top:.1rem;width:1.2rem;height:1.2rem;border-radius:.3rem;background:var(--accent);color:#fff;font-size:.78rem;font-weight:700;display:flex;align-items:center;justify-content:center;line-height:1}
.faq dd{margin:0 0 1.4rem 1.7rem;padding-bottom:1.4rem;font-size:.9rem;color:var(--fg-mute);line-height:1.8;border-bottom:1px solid var(--line)}
.faq dd:last-of-type{margin-bottom:0;padding-bottom:0;border-bottom:0}

/* -------- 汎用 -------- */
.muted{color:var(--fg-light)}
.small{font-size:.84rem}
.trouble{margin:.5rem 0}

/* footer styles: inherit from style.css (= dark footer 統一). docs page 専用 override は撤去. */

/* -------- responsive -------- */
@media (max-width:40rem){
  .compare{grid-template-columns:1fr}
  .choice-row{flex-direction:column}
  .field select,.field input{min-width:0;width:100%}
  .page-title{font-size:1.6rem}
}