/*
 * 秘書役の画面（スマホ優先）。外部のフォント・画像は使わない（CSPが自身のみ許可のため）。
 * インラインstyleも使えないので、状態の切り替えはクラスと hidden 属性で行う。
 * 配色はプロジェクトの色：桜鼠 #e9dfe5／瑠璃紺 #19448e／翡翠 #38b48b。
 */
:root {
  --bg: #f4eff2;
  --surface: #ffffff;
  --surface-alt: #ece4e9;
  --text: #1e2230;
  --text-sub: #5b5f70;
  --main: #19448e;
  --main-text: #ffffff;
  --accent: #38b48b;
  --border: #d8cdd4;
  --danger: #b3261e;
  --user-bubble: #dfe8f7;
  --focus: #1a73e8;
  --radius: 14px;
  --font: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", Meiryo, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Noto Sans Mono CJK JP", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161d;
    --surface: #1d2029;
    --surface-alt: #262a36;
    --text: #e8eaf2;
    --text-sub: #a3a8ba;
    --main: #6f9bf0;
    --main-text: #0e1220;
    --accent: #4ed1a5;
    --border: #353a4a;
    --danger: #ff8a80;
    --user-bubble: #243452;
    --focus: #8ab4f8;
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  -webkit-text-size-adjust: 100%;
}
[hidden] { display: none !important; }

:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- ボタン・入力 ---------- */
.btn, .icon-btn, .chip, .menu-item {
  font: inherit;
  cursor: pointer;
  min-height: 44px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 0 16px;
}
.btn-primary { background: var(--main); color: var(--main-text); border-color: var(--main); font-weight: 600; }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-block { width: 100%; }
.icon-btn { min-width: 44px; padding: 0; font-size: 20px; line-height: 1; border-color: transparent; background: transparent; }
.small-btn { min-height: 44px; min-width: 44px; font-size: 14px; padding: 0 12px; }

.field { display: block; margin-bottom: 16px; }
.field-label { display: block; font-size: 14px; color: var(--text-sub); margin-bottom: 6px; }
.field input, .message-input {
  width: 100%;
  font: inherit;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  min-height: 44px;
}
.form-error { color: var(--danger); margin: 0 0 12px; font-size: 14px; }

/* ---------- ログイン ---------- */
.login { min-height: 100dvh; display: grid; place-items: center; padding: 16px; }
.login-card {
  width: 100%; max-width: 380px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
}
.login-title { margin: 0 0 20px; font-size: 22px; color: var(--main); }

/* ---------- 全体の配置 ---------- */
.app {
  height: 100dvh;
  display: grid;
  grid-template-rows: auto 1fr;
  grid-template-columns: 1fr;
}
.topbar {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 8px;
  padding-top: max(6px, env(safe-area-inset-top));
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.topbar-title { margin: 0; font-size: 17px; color: var(--main); white-space: nowrap; flex-shrink: 0; }
.topbar-info { margin-left: auto; display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }
.chip-info {
  font-size: 12px; color: var(--text-sub);
  background: var(--surface-alt); border-radius: 999px; padding: 2px 10px; line-height: 1.6;
}
.chip-info:empty { display: none; }
.menu-wrap { position: relative; }
.menu {
  position: absolute; right: 0; top: 48px; z-index: 30; min-width: 220px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 6px;
  display: grid; gap: 4px;
}
.menu-item { width: 100%; text-align: left; border-radius: 8px; border-color: transparent; }
.menu-item.danger { color: var(--danger); }

.sidebar {
  position: fixed; inset: 0 auto 0 0; z-index: 40;
  width: min(86vw, 320px);
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 12px;
  padding-top: max(12px, env(safe-area-inset-top));
  display: flex; flex-direction: column; gap: 12px;
  transform: translateX(-102%);
  transition: transform 0.2s ease;
  overflow-y: auto;
}
.sidebar.open { transform: translateX(0); }
.scrim { position: fixed; inset: 0; z-index: 35; background: rgba(0, 0, 0, 0.4); }

.thread-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.thread-item { display: flex; align-items: stretch; gap: 4px; }
.thread-open {
  flex: 1; min-width: 0; text-align: left; font: inherit; cursor: pointer;
  min-height: 44px; border: 1px solid transparent; border-radius: 10px;
  background: transparent; color: var(--text); padding: 6px 10px; line-height: 1.4;
}
.thread-open:hover { background: var(--surface-alt); }
.thread-item.active .thread-open { background: var(--surface-alt); border-color: var(--border); }
.thread-title { display: block; font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.thread-sub { display: block; font-size: 12px; color: var(--text-sub); }
.thread-badge {
  font-size: 11px; color: var(--text-sub); border: 1px solid var(--border);
  border-radius: 999px; padding: 0 6px; margin-left: 6px;
}
.thread-delete { min-width: 44px; border: none; background: transparent; color: var(--text-sub); cursor: pointer; font: inherit; border-radius: 10px; }
.thread-delete:hover { color: var(--danger); background: var(--surface-alt); }

/* ---------- 会話 ---------- */
.main { display: flex; flex-direction: column; min-height: 0; min-width: 0; }
.banner {
  margin: 8px 12px 0; padding: 10px 14px; border-radius: 10px; font-size: 14px;
  background: var(--surface-alt); border: 1px solid var(--danger); color: var(--text);
}
.banner.info { border-color: var(--border); }
.messages {
  flex: 1; overflow-y: auto; padding: 16px 12px 8px;
  display: flex; flex-direction: column; gap: 18px;
  scroll-behavior: smooth; overscroll-behavior: contain;
}
.empty-state { color: var(--text-sub); text-align: center; padding: 0 24px; margin: 0; }

.turn { max-width: 820px; width: 100%; margin: 0 auto; }
.turn-head { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--text-sub); margin-bottom: 4px; }
.turn-role { font-weight: 600; }
.turn.user .turn-body {
  background: var(--user-bubble); border-radius: var(--radius); padding: 10px 14px; white-space: pre-wrap; overflow-wrap: anywhere;
}
.turn.assistant .turn-body { padding: 2px 2px; overflow-wrap: anywhere; }
.turn-notes { margin: 8px 0 0; padding: 0; list-style: none; font-size: 12px; color: var(--text-sub); display: flex; flex-wrap: wrap; gap: 4px 12px; }
.turn-notes li::before { content: "・"; }
.turn-notes li.warn { color: var(--danger); }
.turn-actions { margin-top: 4px; }
.copy-btn { min-height: 44px; font-size: 13px; padding: 0 12px; color: var(--text-sub); }

.md-paragraph { margin: 0 0 0.9em; white-space: pre-wrap; }
.md-heading { margin: 1.2em 0 0.5em; line-height: 1.4; }
h3.md-heading { font-size: 1.2em; }
h4.md-heading { font-size: 1.1em; }
h5.md-heading { font-size: 1em; }
.md-list { margin: 0 0 0.9em; padding-left: 1.5em; }
.md-list li { margin: 0.2em 0; }
.md-code {
  margin: 0 0 0.9em; padding: 12px 14px; overflow-x: auto;
  background: var(--surface-alt); border-radius: 10px; font-family: var(--mono); font-size: 13px; line-height: 1.6;
}
code { font-family: var(--mono); font-size: 0.9em; background: var(--surface-alt); border-radius: 6px; padding: 0.1em 0.4em; }
.md-code code { background: transparent; padding: 0; font-size: inherit; }
.md-hr { border: 0; border-top: 1px solid var(--border); margin: 1.2em 0; }
.md-table-wrap { overflow-x: auto; margin: 0 0 0.9em; }
.md-table { border-collapse: collapse; font-size: 14px; min-width: 100%; }
.md-table th, .md-table td { border: 1px solid var(--border); padding: 6px 10px; text-align: left; vertical-align: top; }
.md-table th { background: var(--surface-alt); }

/* ---------- 入力欄 ---------- */
.composer {
  background: var(--surface); border-top: 1px solid var(--border);
  padding: 8px 12px; padding-bottom: max(8px, env(safe-area-inset-bottom));
}
.composer-note { margin: 0 0 6px; font-size: 13px; color: var(--danger); }
.composer-options { display: flex; flex-wrap: wrap; gap: 6px 12px; align-items: center; margin-bottom: 6px; }
.chip-group { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.chip-group-label { font-size: 12px; color: var(--text-sub); }
.chip { font-size: 13px; padding: 0 12px; min-height: 44px; }
.chip[aria-checked="true"] { background: var(--main); color: var(--main-text); border-color: var(--main); font-weight: 600; }
.sections-panel { flex-basis: 100%; }
.sections-fieldset { border: 1px solid var(--border); border-radius: 10px; padding: 4px 10px; margin: 0; }
.sections-list { display: flex; flex-wrap: wrap; gap: 0 14px; }
.section-check { display: inline-flex; align-items: center; gap: 6px; min-height: 44px; font-size: 14px; cursor: pointer; }
.section-check input { width: 20px; height: 20px; }
.switch { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; font-size: 13px; cursor: pointer; margin-left: auto; }
.switch input { width: 22px; height: 22px; }
.switch.disabled { opacity: 0.5; cursor: not-allowed; }

.composer-row { display: flex; gap: 8px; align-items: flex-end; }
.message-input { resize: none; max-height: 40dvh; line-height: 1.6; }
.send-btn { min-width: 76px; border-radius: 14px; align-self: stretch; }
.composer-foot { display: flex; justify-content: space-between; font-size: 12px; color: var(--text-sub); min-height: 20px; }
.char-count.over { color: var(--danger); font-weight: 600; }

/* ---------- 広い画面：サイドバーを常時表示 ---------- */
.only-mobile { display: inline-flex; align-items: center; justify-content: center; }
@media (min-width: 900px) {
  .app { grid-template-columns: 300px 1fr; grid-template-rows: auto 1fr; }
  .topbar { grid-column: 1 / -1; }
  .sidebar { position: static; transform: none; width: auto; grid-row: 2; grid-column: 1; transition: none; z-index: auto; padding-top: 12px; }
  .main { grid-row: 2; grid-column: 2; }
  .only-mobile { display: none; }
  .scrim { display: none; }
  .messages { padding: 24px 24px 8px; }
  .composer { padding: 10px 24px; padding-bottom: max(10px, env(safe-area-inset-bottom)); }
  .composer > * { max-width: 820px; margin-left: auto; margin-right: auto; }
}

@media (prefers-reduced-motion: reduce) {
  .sidebar { transition: none; }
  .messages { scroll-behavior: auto; }
}

/*
 * ツールチップ（カーソルを合わせる／キーボードでフォーカスすると、data-tip の説明を出す）。
 * インラインstyle・外部リソースを使わず、属性とCSSだけで出す（CSPが自身のみ許可のため）。
 * 位置は data-tip-pos で指定する：既定＝上（左そろえ）／above-right＝上（右そろえ）／below＝下／below-right＝下（右そろえ）／left＝左
 * ⚠ `:focus-within` は使わない（クリックでフォーカスが残ると、操作のあとも説明が居残るため）。
 *   キーボードのフォーカスだけ `:focus-visible` で出す。チェックボックスを包むラベルは `:has(:focus-visible)` で出す。
 * ⚠ メニューを開いている間（aria-expanded="true"）は、その要素の説明を出さない（開いたメニューに重なるため）。
 */
[data-tip] { position: relative; }
[data-tip]::after { display: none; }
[data-tip]:hover::after,
[data-tip]:focus-visible::after,
[data-tip]:has(:focus-visible)::after {
  display: block;
  content: attr(data-tip);
  position: absolute;
  z-index: 60;
  left: 0;
  bottom: calc(100% + 6px);
  width: max-content;
  max-width: min(260px, calc(100vw - 32px));
  padding: 8px 10px;
  border-radius: 8px;
  background: var(--text);
  color: var(--bg);
  font-size: 12px;
  font-weight: 400;
  line-height: 1.5;
  text-align: left;
  white-space: normal;
  pointer-events: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}
[data-tip][data-tip-pos="above-right"]:hover::after,
[data-tip][data-tip-pos="above-right"]:focus-visible::after,
[data-tip][data-tip-pos="above-right"]:has(:focus-visible)::after { left: auto; right: 0; }
[data-tip][data-tip-pos="below"]:hover::after,
[data-tip][data-tip-pos="below"]:focus-visible::after,
[data-tip][data-tip-pos="below"]:has(:focus-visible)::after { bottom: auto; top: calc(100% + 6px); }
[data-tip][data-tip-pos="below-right"]:hover::after,
[data-tip][data-tip-pos="below-right"]:focus-visible::after,
[data-tip][data-tip-pos="below-right"]:has(:focus-visible)::after { bottom: auto; top: calc(100% + 6px); left: auto; right: 0; }
[data-tip][data-tip-pos="left"]:hover::after,
[data-tip][data-tip-pos="left"]:focus-visible::after,
[data-tip][data-tip-pos="left"]:has(:focus-visible)::after { bottom: auto; top: 0; left: auto; right: calc(100% + 6px); }
/* 狭い画面では、左向きの説明が画面の外へはみ出すため、下向き（右そろえ）にする */
@media (max-width: 560px) {
  [data-tip][data-tip-pos="left"]:hover::after,
  [data-tip][data-tip-pos="left"]:focus-visible::after,
  [data-tip][data-tip-pos="left"]:has(:focus-visible)::after { top: calc(100% + 6px); right: 0; }
}
[data-tip][aria-expanded="true"]::after { display: none !important; }