/* ============================================================
   AIリテラシーの書 — 上品な本・図書館風デザイン
   配色: クリーム × 深緑(AiRaiseティール寄り) × 金
   ============================================================ */
:root {
  --cream: #f7f1e3;
  --paper: #fdfaf2;
  --paper-edge: #e8dfc8;
  --ink: #2b2a26;
  --ink-soft: #5a564c;
  --green: #1e6e62;        /* AiRaiseティールを落ち着かせた深緑 */
  --green-deep: #14483f;
  --teal: #2bb5a0;         /* AiRaiseアクセント */
  --gold: #c9a227;
  --gold-soft: #e3cf8f;
  --red: #a8503f;
  --shadow: 0 18px 50px rgba(43, 42, 38, .25);
  --serif: "Shippori Mincho", serif;
  --sans: "Noto Sans JP", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--green-deep);
  min-height: 100vh;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

/* 図書館風の背景（CSSのみで本棚の雰囲気） */
.library-bg {
  position: fixed; inset: 0; z-index: -1;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(201,162,39,.14), transparent 60%),
    repeating-linear-gradient(90deg,
      #173f38 0 6px, #1a463e 6px 26px, #123931 26px 30px,
      #1c4a42 30px 52px, #15413a 52px 58px),
    linear-gradient(180deg, #14483f, #0e352e);
  background-blend-mode: normal, soft-light, normal;
}
.library-bg::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,.25), transparent 30%, transparent 70%, rgba(0,0,0,.45));
}

/* ===== ヘッダー / フッター ===== */
.site-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px 28px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo { height: 34px; filter: brightness(0) invert(1); opacity: .95; }
.brand-sub {
  color: var(--gold-soft); font-family: var(--serif);
  font-size: 14px; letter-spacing: .2em; border-left: 1px solid rgba(227,207,143,.5);
  padding-left: 12px;
}
.site-footer { text-align: center; padding: 26px 0 34px; color: rgba(247,241,227,.55); font-size: 12.5px; letter-spacing: .12em; }

/* ===== 画面切替 ===== */
.stage { max-width: 980px; margin: 0 auto; padding: 10px 18px 40px; }
.screen { display: none; animation: fadeUp .6s ease both; }
.screen.active { display: block; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }

/* ===== 表紙 ===== */
.book-cover {
  max-width: 640px; margin: 4vh auto;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(255,255,255,.07), transparent 55%),
    linear-gradient(135deg, #1e6e62, #14483f 70%);
  border-radius: 8px 16px 16px 8px;
  box-shadow: var(--shadow), inset -3px 0 8px rgba(0,0,0,.3), inset 12px 0 0 #0f3a32, inset 16px 0 0 rgba(201,162,39,.55);
  padding: 56px 48px 44px 64px;
  position: relative;
  color: var(--cream);
}
.cover-frame {
  border: 1.5px solid rgba(227,207,143,.65);
  outline: 1px solid rgba(227,207,143,.25);
  outline-offset: 5px;
  padding: 38px 32px;
  text-align: center;
}
.cover-kicker { font-size: 13px; letter-spacing: .3em; color: var(--gold-soft); margin-bottom: 14px; }
.cover-title {
  font-family: var(--serif); font-weight: 800;
  font-size: clamp(34px, 6vw, 52px); letter-spacing: .12em;
  color: #fff;
  text-shadow: 0 2px 14px rgba(0,0,0,.35);
  margin-bottom: 18px;
}
.cover-lead { font-size: 15px; color: rgba(247,241,227,.92); margin-bottom: 22px; }
.cover-lead strong { color: var(--gold-soft); }
.cover-points {
  list-style: none; font-size: 13.5px; color: rgba(247,241,227,.8);
  margin-bottom: 28px;
}
.cover-points li::before { content: "◆ "; color: var(--gold); font-size: 10px; }
.cover-credit { margin-top: 22px; font-size: 11.5px; letter-spacing: .25em; color: rgba(227,207,143,.7); }

/* ===== ボタン ===== */
.btn-primary {
  font-family: var(--sans); font-weight: 700; font-size: 16px;
  color: #fff; background: linear-gradient(135deg, var(--teal), var(--green));
  border: none; border-radius: 999px;
  padding: 15px 38px; cursor: pointer;
  box-shadow: 0 8px 24px rgba(43,181,160,.35);
  transition: transform .2s, box-shadow .2s, opacity .2s;
}
.btn-primary:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(43,181,160,.45); }
.btn-primary:disabled { opacity: .45; cursor: not-allowed; }
.btn-text {
  background: none; border: none; cursor: pointer;
  color: var(--ink-soft); font-size: 13.5px; text-decoration: underline;
  font-family: var(--sans);
}
.site-header .btn-text { color: rgba(247,241,227,.75); }

/* ===== 紙（設定・結果ページ） ===== */
.paper {
  background:
    linear-gradient(180deg, var(--paper), #f6f0df);
  border-radius: 10px;
  box-shadow: var(--shadow), 0 0 0 1px var(--paper-edge), 0 3px 0 #efe7d2, 0 6px 0 #e6dcc2;
  padding: 48px 52px;
  max-width: 860px; margin: 2vh auto;
}
.paper-title {
  font-family: var(--serif); font-size: 28px; letter-spacing: .1em;
  color: var(--green-deep); text-align: center; margin-bottom: 30px;
}
.paper-title::after {
  content: ""; display: block; width: 64px; height: 2px;
  background: var(--gold); margin: 14px auto 0;
}

/* ===== 設定画面 ===== */
.setup-block { margin-bottom: 32px; }
.setup-label {
  font-family: var(--serif); font-size: 17px; color: var(--ink);
  margin-bottom: 14px; letter-spacing: .05em;
}
.setup-label small { font-size: 12px; color: var(--ink-soft); font-family: var(--sans); margin-left: 6px; }
.setup-label .num {
  display: inline-flex; width: 28px; height: 28px; margin-right: 10px;
  align-items: center; justify-content: center;
  background: var(--green); color: var(--cream);
  border-radius: 50%; font-size: 14px;
}
.choice-row { display: flex; gap: 14px; }
.choice-row.wrap { flex-wrap: wrap; }
.choice-card {
  flex: 1 1 260px;
  background: #fff; border: 1.5px solid var(--paper-edge); border-radius: 12px;
  padding: 14px 16px; cursor: pointer; text-align: left;
  font-family: var(--sans);
  transition: border-color .2s, box-shadow .2s, transform .15s;
  display: grid; grid-template-columns: auto 1fr; grid-template-areas: "icon name" "icon desc";
  column-gap: 14px; row-gap: 2px; align-items: center;
}
.choice-card:hover { transform: translateY(-2px); border-color: var(--teal); }
.choice-card.selected {
  border-color: var(--green); box-shadow: 0 0 0 2px var(--green), 0 8px 20px rgba(30,110,98,.18);
  background: linear-gradient(180deg, #ffffff, #f0f8f5);
}
.choice-card.selected .choice-name::after { content: " ✓"; color: var(--green); }
.choice-icon { grid-area: icon; font-size: 22px; align-self: center; }
img.choice-icon { width: 46px; height: 46px; object-fit: contain; display: block; margin: 0; }
.choice-name { grid-area: name; font-weight: 700; font-size: 15px; color: var(--ink); white-space: nowrap; }
.choice-desc { grid-area: desc; font-size: 12px; color: var(--ink-soft); line-height: 1.55; }
.setup-footer { text-align: center; margin-top: 8px; }
.setup-summary { font-size: 13px; color: var(--ink-soft); margin-bottom: 14px; min-height: 1.5em; }

/* ===== 本（診断・学習） ===== */
.quiz-meta {
  display: flex; align-items: center; gap: 16px;
  max-width: 760px; margin: 0 auto 16px; color: var(--cream);
}
.quiz-cat { font-family: var(--serif); font-size: 14px; letter-spacing: .12em; color: var(--gold-soft); white-space: nowrap; }
.quiz-counter { font-size: 13px; color: rgba(247,241,227,.8); white-space: nowrap; }
.progress-track { flex: 1; height: 5px; background: rgba(247,241,227,.18); border-radius: 99px; overflow: hidden; }
.progress-bar { height: 100%; width: 0%; background: linear-gradient(90deg, var(--gold), var(--gold-soft)); transition: width .5s ease; border-radius: 99px; }

.book {
  position: relative;
  max-width: 760px; min-height: 520px;
  margin: 0 auto;
  perspective: 2400px;
}
.book-spine {
  position: absolute; left: -14px; top: 6px; bottom: 6px; width: 22px;
  background: linear-gradient(90deg, #0f3a32, var(--green-deep));
  border-radius: 8px 0 0 8px;
  box-shadow: -6px 8px 24px rgba(0,0,0,.4);
}
.page-stack {
  position: absolute; inset: 0;
  background: var(--paper);
  border-radius: 4px 12px 12px 4px;
  box-shadow:
    var(--shadow),
    2px 2px 0 #efe7d2, 4px 4px 0 #e9dfc8, 6px 6px 0 #e2d6ba,
    0 0 0 1px var(--paper-edge);
}
.page {
  position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(43,42,38,.07), transparent 5%),
    linear-gradient(180deg, var(--paper), #f8f3e4);
  border-radius: 4px 12px 12px 4px;
  padding: 42px 46px 80px;
  transform-origin: left center;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  overflow-y: auto;
}
.page::after { /* ページ番号風の飾り */
  content: ""; position: absolute; right: 20px; bottom: 16px;
  width: 40px; height: 1px; background: var(--gold-soft);
}
#page-next, #learn-next { visibility: hidden; }

/* めくりアニメーション */
@keyframes flipOut {
  0%   { transform: rotateY(0deg);   box-shadow: -20px 10px 40px rgba(0,0,0,.0); }
  60%  { box-shadow: -40px 20px 50px rgba(0,0,0,.35); }
  100% { transform: rotateY(-150deg); box-shadow: 0 0 0 rgba(0,0,0,0); opacity: 0; }
}
.page.flip-out { animation: flipOut .8s cubic-bezier(.55,.06,.35,.95) forwards; z-index: 5; }
@keyframes pageIn { from { opacity: .4; } to { opacity: 1; } }
.page.flip-in { visibility: visible; animation: pageIn .5s ease both; }

/* ===== 質問ページの中身 ===== */
.q-label {
  display: inline-block; font-size: 12px; letter-spacing: .18em;
  color: var(--green); border: 1px solid var(--green);
  border-radius: 999px; padding: 2px 14px; margin-bottom: 16px;
}
.q-text {
  font-family: var(--serif); font-size: 20px; line-height: 1.7;
  color: var(--ink); margin-bottom: 24px; font-weight: 600;
}
.q-choices { display: flex; flex-direction: column; gap: 10px; }
.q-choice {
  text-align: left; background: #fff;
  border: 1.5px solid var(--paper-edge); border-radius: 10px;
  padding: 13px 18px; font-size: 14.5px; font-family: var(--sans);
  color: var(--ink); cursor: pointer; line-height: 1.6;
  transition: border-color .15s, background .15s, transform .1s;
  display: flex; gap: 10px; align-items: baseline;
}
.q-choice:hover:not(:disabled) { border-color: var(--teal); transform: translateX(3px); }
.q-choice:disabled { cursor: default; }
.q-choice .key {
  font-family: var(--serif); color: var(--gold); font-weight: 700; flex-shrink: 0;
}
.q-choice.correct { border-color: var(--green); background: #eef7f1; box-shadow: 0 0 0 1.5px var(--green); }
.q-choice.wrong { border-color: var(--red); background: #faf0ee; box-shadow: 0 0 0 1.5px var(--red); }

/* 会社診断の3択 */
.company-choices { display: flex; gap: 12px; margin-top: 10px; }
.company-choices .q-choice { flex: 1; justify-content: center; font-weight: 700; }

/* 回答後のフィードバック */
.q-feedback { margin-top: 20px; animation: fadeUp .4s ease both; }
.q-verdict { font-family: var(--serif); font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.q-verdict.ok { color: var(--green); }
.q-verdict.ng { color: var(--red); }
.q-point { font-size: 13.5px; color: var(--ink-soft); margin-bottom: 14px; }
.next-area { position: absolute; right: 34px; bottom: 22px; }
.btn-next {
  font-family: var(--serif); font-size: 15px; letter-spacing: .08em;
  color: var(--green-deep); background: none; border: none; cursor: pointer;
  padding: 8px 4px;
  border-bottom: 1.5px solid var(--gold);
  transition: letter-spacing .2s, color .2s;
}
.btn-next:hover { letter-spacing: .16em; color: var(--green); }

/* ===== 学習ページ（たとえ話） ===== */
.learn-page .q-label { color: var(--gold); border-color: var(--gold); }
.learn-lesson {
  font-family: var(--serif); font-size: 22px; font-weight: 700;
  color: var(--green-deep); line-height: 1.6; margin-bottom: 6px;
}
.learn-cat { font-size: 12px; color: var(--ink-soft); letter-spacing: .1em; margin-bottom: 18px; }
.analogy-box {
  position: relative;
  background: linear-gradient(180deg, #fbf6e8, #f6eed6);
  border-left: 3px solid var(--gold);
  border-radius: 0 12px 12px 0;
  padding: 22px 24px 20px 30px;
  margin-bottom: 18px;
  font-size: 15px; line-height: 2;
}
.analogy-box::before {
  content: "たとえるなら"; position: absolute; top: -11px; left: 14px;
  background: var(--gold); color: #fff;
  font-size: 11px; letter-spacing: .15em;
  border-radius: 999px; padding: 2px 12px;
}
.learn-point { font-size: 13.5px; color: var(--ink-soft); }
.learn-point::before { content: "要点 ─ "; color: var(--green); font-weight: 700; }
.learn-q { font-size: 12.5px; color: var(--ink-soft); border-top: 1px dashed var(--paper-edge); padding-top: 12px; margin-top: 16px; }

/* ===== 結果 ===== */
.result-paper { text-align: center; }
.result-kicker { font-size: 12px; letter-spacing: .3em; color: var(--gold); margin-bottom: 8px; }
.result-title { font-family: var(--serif); font-size: 26px; color: var(--green-deep); margin-bottom: 26px; }
.result-score-wrap { display: flex; align-items: center; justify-content: center; gap: 34px; flex-wrap: wrap; margin-bottom: 34px; }
.score-circle { position: relative; width: 150px; height: 150px; }
.score-circle svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.score-bg { fill: none; stroke: var(--paper-edge); stroke-width: 9; }
.score-arc {
  fill: none; stroke: url(#scoreGradient), var(--green); stroke: var(--green);
  stroke-width: 9; stroke-linecap: round;
  stroke-dasharray: 326.7; stroke-dashoffset: 326.7;
  transition: stroke-dashoffset 1.4s cubic-bezier(.3,.7,.3,1);
}
.score-num {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  font-family: var(--serif); font-size: 44px; font-weight: 800; color: var(--green-deep);
}
.score-num small { font-size: 14px; margin-left: 2px; }
.result-message { max-width: 380px; text-align: left; font-size: 14.5px; color: var(--ink-soft); }
.section-label { font-family: var(--serif); font-size: 16px; color: var(--ink); letter-spacing: .1em; margin-bottom: 16px; }
.cat-bars { max-width: 560px; margin: 0 auto 30px; display: flex; flex-direction: column; gap: 12px; }
.cat-bar-row { display: grid; grid-template-columns: 170px 1fr 44px; gap: 12px; align-items: center; font-size: 13.5px; }
.cat-bar-name { text-align: right; color: var(--ink); }
.cat-bar-track { height: 12px; background: #ece4cf; border-radius: 99px; overflow: hidden; }
.cat-bar-fill { height: 100%; width: 0%; border-radius: 99px; background: linear-gradient(90deg, var(--teal), var(--green)); transition: width 1.2s cubic-bezier(.3,.7,.3,1); }
.cat-bar-fill.low { background: linear-gradient(90deg, #d9a05b, var(--red)); }
.cat-bar-score { font-weight: 700; color: var(--green-deep); }
.weak-intro { font-size: 14px; color: var(--ink-soft); max-width: 560px; margin: 0 auto 24px; }
.result-actions { display: flex; flex-direction: column; align-items: center; gap: 12px; }

/* ===== 改善アイディア & CTA ===== */
.ideas-list { display: flex; flex-direction: column; gap: 18px; margin-bottom: 38px; }
.idea-group {
  background: #fff; border: 1px solid var(--paper-edge); border-radius: 12px;
  padding: 20px 24px;
}
.idea-group h4 {
  font-family: var(--serif); font-size: 16px; color: var(--green-deep);
  margin-bottom: 10px;
}
.idea-group h4 .score-tag { font-size: 12px; color: var(--gold); margin-left: 8px; font-family: var(--sans); }
.idea-group ul { list-style: none; }
.idea-group li { font-size: 13.5px; color: var(--ink-soft); padding-left: 1.4em; text-indent: -1.4em; margin-bottom: 4px; }
.idea-group li::before { content: "▸ "; color: var(--teal); }

.cta-box {
  background: linear-gradient(135deg, var(--green-deep), var(--green));
  color: var(--cream); border-radius: 14px;
  padding: 38px 36px; text-align: center;
  box-shadow: 0 16px 40px rgba(20,72,63,.4);
}
.cta-title { font-family: var(--serif); font-size: 22px; color: #fff; margin-bottom: 14px; letter-spacing: .06em; }
.cta-lead { font-size: 14px; line-height: 2; margin-bottom: 24px; color: rgba(247,241,227,.92); }
.cta-lead strong { color: var(--gold-soft); }
.cta-form { max-width: 420px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; text-align: left; }
.cta-form label { font-size: 12.5px; color: var(--gold-soft); display: flex; flex-direction: column; gap: 4px; }
.cta-form input, .cta-form select {
  font-family: var(--sans); font-size: 14px; color: var(--ink);
  background: var(--paper); border: none; border-radius: 8px;
  padding: 11px 14px;
}
.cta-form .btn-primary { margin-top: 8px; background: linear-gradient(135deg, var(--gold), #b08c1e); box-shadow: 0 8px 24px rgba(201,162,39,.4); }
.cta-note { font-size: 11.5px; color: rgba(247,241,227,.65); text-align: center; }
.closing { text-align: center; margin-top: 26px; }

/* ===== レスポンシブ ===== */
.pc-only { display: inline; }
@media (max-width: 640px) {
  .pc-only { display: none; }
  .paper { padding: 30px 22px; }
  .book-cover { padding: 36px 24px 30px 36px; }
  .cover-frame { padding: 26px 16px; }
  .page { padding: 28px 22px 80px; }
  .q-text { font-size: 17px; }
  .company-choices { flex-direction: column; }
  .cat-bar-row { grid-template-columns: 110px 1fr 40px; font-size: 12px; }
  .choice-row { flex-direction: column; }
  .book { min-height: 560px; }
}

/* ============================================================
   追加：魔法演出 / 1つ戻る / つまずき一覧アコーディオン / 微調整
   ============================================================ */
/* 表紙タイトルを1行で */
.cover-title { white-space: nowrap; font-size: clamp(30px, 8.5vw, 48px); }
/* 表紙ポイントを左揃え */
.cover-points { text-align: left; }

/* 魔法の本登場（映画風：金がブワーッ→中から本が出現） */
.screen { position: relative; }
/* 本：最初は見えない（金の中）→ にじみ出て出現 */
@keyframes bookEmerge {
  0%   { opacity: 0; transform: scale(.55) translateY(30px); filter: blur(26px); }
  38%  { opacity: 0; transform: scale(.78) translateY(16px); filter: blur(20px); }   /* まだ姿は見えない */
  68%  { opacity: 1; transform: scale(1.04) translateY(0);  filter: blur(3px); }
  100% { opacity: 1; transform: scale(1) translateY(0);     filter: blur(0); }
}
.magic-in { animation: bookEmerge 1.8s cubic-bezier(.2,.85,.25,1) both; }

/* 金色のバースト：弾けて広がり、消えながら本を露わにする */
@keyframes goldBurst {
  0%   { opacity: 0; transform: translate(-50%,-50%) scale(.15); }
  22%  { opacity: 1; }
  55%  { opacity: .85; }
  100% { opacity: 0; transform: translate(-50%,-50%) scale(1.9); }
}
.magic-burst {
  position: absolute; left: 50%; top: 50%;
  width: 150%; padding-bottom: 150%;
  transform: translate(-50%,-50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,244,214,.98) 0%, rgba(255,221,140,.85) 22%, rgba(201,162,39,.55) 45%, rgba(201,162,39,.12) 62%, transparent 72%);
  pointer-events: none; z-index: 30; mix-blend-mode: screen;
  animation: goldBurst 1.5s cubic-bezier(.2,.7,.2,1) both;
}
@media (prefers-reduced-motion: reduce) {
  .magic-in { animation: none; }
  .magic-burst { display: none; }
}

/* 1つ前に戻る */
.quiz-nav { max-width: 720px; margin: 0 auto 8px; }
.btn-back {
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.45); color: #fff;
  font-family: var(--sans); font-size: 13px; border-radius: 999px;
  padding: 7px 16px; cursor: pointer; transition: background .2s, border-color .2s;
}
.btn-back:hover { background: rgba(255,255,255,.18); border-color: rgba(255,255,255,.85); }

/* つまずいたポイント：アコーディオン一覧 */
.weak-accordion { max-width: 620px; margin: 0 auto 26px; display: flex; flex-direction: column; gap: 10px; text-align: left; }
.wk-item { border: 1px solid var(--paper-edge); border-radius: 12px; background: #fff; overflow: hidden; }
.wk-head { width: 100%; display: flex; align-items: center; gap: 12px; padding: 15px 18px; background: none; border: 0; cursor: pointer; font-family: var(--sans); text-align: left; }
.wk-head .wk-icon { font-size: 18px; flex: none; }
.wk-head .wk-title { flex: 1; font-weight: 700; color: var(--green-deep); font-size: 14.5px; line-height: 1.55; }
.wk-head .wk-cat { font-size: 11px; color: var(--ink-soft); background: #f1ead7; border-radius: 999px; padding: 3px 10px; white-space: nowrap; flex: none; }
.wk-head .wk-toggle { font-size: 20px; color: var(--gold); width: 22px; text-align: center; flex: none; transition: transform .2s; }
.wk-item.open .wk-toggle { transform: rotate(45deg); }
.wk-body { padding: 2px 18px 18px; animation: wkOpen .25s ease; }
.wk-body .wk-q { font-size: 14px; font-weight: 700; color: var(--green-deep); line-height: 1.7; margin: 4px 0 14px; padding-bottom: 12px; border-bottom: 1px dashed var(--paper-edge); }
.wk-body .analogy-box { margin-top: 8px; }
@keyframes wkOpen { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }
@media (max-width: 640px) {
  .wk-head { flex-wrap: wrap; gap: 8px; }
  .wk-head .wk-cat { order: 3; }
}

/* 送信完了メッセージ */
.cta-thanks { font-size: 15px; line-height: 1.9; color: #fff; text-align: center; padding: 12px 0; }

/* フッター タグライン */
.footer-tagline { font-family: var(--serif); margin-bottom: 4px; }