:root {
  --bg: #f4f6f9; --card: #fff; --text: #1f2329; --muted: #646a73; --line: #dee0e3;
  --primary: #3370ff; --primary-dark: #2858cc; --danger: #d83931; --ok: #2ea121; --warn: #b8860b;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #17181c; --card: #212328; --text: #e8eaed; --muted: #9aa0a8; --line: #373a40; --primary: #5b8cff; --primary-dark: #7aa1ff; }
}
/* 文字の大きさ: すべての大きさは rem(この値が基準)で決めてある。ヘッダーの「文字」ボタンで切り替わる */
html { font-size: 19px; }            /* 既定:大 */
html.fs-m { font-size: 16px; }       /* 標準 */
html.fs-l { font-size: 19px; }       /* 大 */
html.fs-xl { font-size: 23px; }      /* 特大 */

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: "Yu Gothic UI", "Meiryo", sans-serif; line-height: 1.65; font-size: 1rem; }
a { color: var(--primary); text-decoration: none; } a:hover { text-decoration: underline; }
header.top { background: var(--card); border-bottom: 1px solid var(--line); }
/* ヘッダー: 上の段=タイトルと利用者の情報(右寄せ)、下の段=メニュー。文字が大きくても段が増えすぎないようにする */
.bar { max-width: 72rem; margin: 0 auto; padding: .5rem 1rem; display: flex; flex-wrap: wrap; align-items: center; gap: .25rem 1.2rem; }
.brand { font-weight: 700; font-size: 1.13rem; color: var(--text); order: 1; }
.me { order: 2; margin-left: auto; justify-content: flex-end; }
nav { order: 3; flex: 0 0 100%; display: flex; flex-wrap: wrap; gap: .1rem 1rem; }
nav a { color: var(--text); padding: .25rem .15rem; } nav a.on { color: var(--primary); font-weight: 600; }
.me { color: var(--muted); font-size: .88rem; display: flex; flex-wrap: wrap; gap: .4rem .75rem; align-items: center; }
.fs-switch { display: inline-flex; align-items: center; gap: .25rem; }
.fs-switch button { border: 1px solid var(--line); background: var(--card); color: var(--text); border-radius: .4rem; padding: .1rem .55rem; cursor: pointer; font-family: inherit; font-size: .85rem; }
.fs-switch button[aria-pressed="true"] { background: var(--primary); border-color: var(--primary); color: #fff; }
main { max-width: 72rem; margin: 0 auto; padding: 1.3rem 1rem 4rem; }
h1 { font-size: 1.4rem; margin: .25rem 0 1rem; } h2 { font-size: 1.13rem; margin: 1.6rem 0 .65rem; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: .65rem; padding: 1rem 1.15rem; margin-bottom: 1rem; }
.banner { background: #fff4d6; color: #5c4a00; text-align: center; font-size: .85rem; padding: .25rem .5rem; }
.flash { padding: .65rem .9rem; border-radius: .5rem; margin-bottom: .75rem; border: 1px solid; }
.flash.ok { background: #e7f6e5; border-color: #b7e2b2; color: #1c6a14; }
.flash.error { background: #fdeceb; border-color: #f3b9b5; color: #a4241d; }
.grid { display: grid; gap: .75rem; grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr)); }
.stat { text-align: center; padding: .75rem .5rem; } .stat b { font-size: 1.75rem; display: block; }
table { width: 100%; border-collapse: collapse; background: var(--card); }
th, td { text-align: left; padding: .55rem .65rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: .88rem; white-space: nowrap; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: .65rem; }
.badge { display: inline-block; padding: .05rem .6rem; border-radius: .7rem; font-size: .82rem; border: 1px solid var(--line); white-space: nowrap; }
.badge.draft { color: var(--muted); } .badge.pending { color: var(--warn); border-color: #e6c866; }
.badge.rejected, .badge.push_failed { color: var(--danger); border-color: #f0a8a3; } .badge.saved { color: var(--ok); border-color: #a5d99f; }
label { display: block; font-weight: 600; margin: .9rem 0 .25rem; } label .req { color: var(--danger); margin-left: .3rem; font-size: .8rem; }
input[type=text], input[type=password], input[type=date], input[type=month], select, textarea {
  width: 100%; padding: .6rem .75rem; border: 1px solid var(--line); border-radius: .5rem; font-size: 1rem; background: var(--card); color: var(--text); font-family: inherit; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--primary); outline-offset: 0; }
.hint { color: var(--muted); font-size: .85rem; margin-top: .15rem; } .err { color: var(--danger); font-size: .88rem; margin-top: .2rem; }
.checks { display: flex; flex-wrap: wrap; gap: .4rem 1rem; } .checks label { font-weight: 400; margin: 0; display: inline-flex; gap: .35rem; align-items: center; }
input[type=checkbox] { width: 1.1rem; height: 1.1rem; }
.btn { display: inline-block; border: 1px solid var(--primary); background: var(--primary); color: #fff; padding: .55rem 1.15rem; border-radius: .5rem; cursor: pointer; font-size: 1rem; font-family: inherit; }
.btn:hover { background: var(--primary-dark); text-decoration: none; }
.btn.sub { background: transparent; color: var(--primary); } .btn.sub:hover { background: rgba(51,112,255,.08); }
.btn.danger { background: var(--danger); border-color: var(--danger); } .btn.small { padding: .2rem .75rem; font-size: .88rem; }
.actions { display: flex; flex-wrap: wrap; gap: .65rem; margin-top: 1.25rem; align-items: center; }
form.inline { display: inline; } .muted { color: var(--muted); }
.login { max-width: 25rem; margin: 3.5rem auto; }
dl.kv { display: grid; grid-template-columns: 10rem 1fr; gap: .4rem .75rem; margin: 0; } dl.kv dt { color: var(--muted); } dl.kv dd { margin: 0; }
.list-links { list-style: none; padding: 0; margin: 0; } .list-links li { padding: .65rem 0; border-bottom: 1px solid var(--line); }
@media (max-width: 600px) { dl.kv { grid-template-columns: 1fr; } }

/* チャット */
.chat { display: flex; flex-direction: column; height: calc(100vh - 11rem); min-height: 26rem; max-width: 50rem; margin: 0 auto; background: var(--card); border: 1px solid var(--line); border-radius: .75rem; overflow: hidden; }
.chat-head { display: flex; justify-content: space-between; align-items: center; gap: .5rem; padding: .65rem .9rem; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.chat-head .tools { display: flex; gap: .5rem; flex-wrap: wrap; }
.chat-log { flex: 1; overflow-y: auto; padding: .9rem; display: flex; flex-direction: column; gap: .65rem; background: var(--bg); }
.msg { max-width: 90%; display: flex; flex-direction: column; gap: .4rem; }
.msg.me { align-self: flex-end; align-items: flex-end; } .msg.bot { align-self: flex-start; }
.bubble { padding: .6rem .85rem; border-radius: .9rem; white-space: pre-wrap; word-break: break-word; border: 1px solid var(--line); background: var(--card); }
.msg.me .bubble { background: var(--primary); color: #fff; border-color: var(--primary); }
.choices { display: flex; flex-wrap: wrap; gap: .5rem; }
.chip { border: 1px solid var(--primary); color: var(--primary); background: var(--card); border-radius: 1.2rem; padding: .4rem .95rem; cursor: pointer; font-size: .97rem; font-family: inherit; }
.chip:hover { background: rgba(51,112,255,.08); } .chip.on { background: var(--primary); color: #fff; } .chip.skip { border-color: var(--muted); color: var(--muted); }
.chip.go { background: var(--primary); color: #fff; } .chip:disabled { opacity: .5; cursor: default; }
.chip.help { border-style: dashed; border-color: var(--muted); color: var(--muted); }
.msg a.link { font-size: .92rem; }
.chat-input { display: flex; gap: .5rem; padding: .65rem .75rem; border-top: 1px solid var(--line); background: var(--card); }
.chat-input input { flex: 1; }
.typing { color: var(--muted); font-size: .88rem; }

/* 狭い画面(スマートフォン): ヘッダーを低くして、チャットの入力欄が画面内に収まるようにする */
@media (max-width: 600px) {
  .bar { padding: .35rem .75rem; gap: .15rem .6rem; }
  nav { flex-wrap: nowrap; overflow-x: auto; white-space: nowrap; gap: 0 .9rem; padding-bottom: .1rem; }
  .me { font-size: .8rem; gap: .2rem .5rem; }
  main { padding: .75rem .6rem 3rem; }
  .chat { height: calc(100vh - 7rem); height: calc(100dvh - 7rem); min-height: 20rem; border-radius: .5rem; }
  .msg { max-width: 96%; }
}

/* チャット画面: 画面の高さにぴったり収め、会話の部分だけをスクロールさせる(入力欄がいつも見える) */
body.chatpage { height: 100vh; height: 100dvh; display: flex; flex-direction: column; overflow: hidden; }
body.chatpage main { flex: 1; min-height: 0; width: 100%; display: flex; flex-direction: column; padding-top: .75rem; padding-bottom: .75rem; }
body.chatpage .chat { flex: 1; min-height: 0; height: auto; width: 100%; }
@media (max-width: 600px) { body.chatpage .chat { height: auto; min-height: 0; } }

.banner.live { background: #e8f0ff; color: #1f3a8a; }
@media (prefers-color-scheme: dark) { .banner.live { background: #1d2a4a; color: #bcd0ff; } }