/* ==========================================================
   ことわざ穴うめ - style.css
   配色・余白・カード・ボタンは基準実装（number-memory / letter-trace）を踏襲する。
   すべてのクラスに .kw- プレフィックスを付与（WP干渉防止）。
   文字と背景のコントラスト比は 4.5:1 以上（DS-22）。基準実装の灰色・緑・金は足りないため暗くした。
   ========================================================== */

[hidden] { display: none !important; }

.kw-body {
  margin: 0;
  background: #e9ecef;
}

.kw-app,
.kw-app *,
.kw-app *::before,
.kw-app *::after {
  box-sizing: border-box;
}

.kw-app {
  /* ---- CSS変数（基準実装と共通） ---- */
  --kw-red: #c92a2a;
  --kw-blue: #1971c2;
  --kw-green: #237a38;
  --kw-gold: #fcc419;
  --kw-bg: #f4f6fb;
  --kw-card: #ffffff;
  --kw-text: #212529;
  --kw-muted: #5c6670;
  --kw-primary: #3b5bdb;
  --kw-primary-dark: #2f49b3;
  --kw-border: #dee2e6;
  --kw-radius: 16px;

  position: relative;
  display: flex;
  flex-direction: column;
  max-width: 560px;
  min-height: 640px;
  margin: 0 auto;
  padding: 16px 16px max(16px, env(safe-area-inset-bottom));
  background: var(--kw-bg);
  color: var(--kw-text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN",
    "Yu Gothic", "Meiryo", "Noto Sans JP", sans-serif;
  font-size: 16px;
  line-height: 1.5;
  text-align: left;
  -webkit-tap-highlight-color: transparent;
  -webkit-text-size-adjust: 100%;
}

/* 詳細度0のリセット（個別クラスのmargin等を邪魔しない） */
:where(.kw-app) :is(h1, h2, p, dl, dd, ul, ol) { margin: 0; padding: 0; }
:where(.kw-app) :is(ul, ol) { list-style: none; }

.kw-app button,
.kw-app a,
.kw-app summary { touch-action: manipulation; }

/* ---------- トップバー ---------- */
.kw-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 44px;
  margin-bottom: 4px;
}
.kw-app a.kw-back,
.kw-app .kw-sound-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  background: var(--kw-card);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.08s ease, background-color 0.15s ease;
}
.kw-app a.kw-back { width: 44px; border-radius: 50%; color: var(--kw-primary); }
.kw-app .kw-sound-btn {
  padding: 0 14px;
  border-radius: 999px;
  color: var(--kw-text);
  font: inherit;
  font-size: 0.9rem;
  font-weight: 700;
}
.kw-app a.kw-back:hover { background: #edf2ff; color: var(--kw-primary-dark); }
.kw-app .kw-sound-btn:hover { background: #f1f3f5; }
.kw-app a.kw-back:active,
.kw-app .kw-sound-btn:active { transform: scale(0.94); }
.kw-back svg { display: block; width: 22px; height: 22px; }
.kw-app a.kw-back:focus-visible,
.kw-sound-btn:focus-visible,
.kw-btn:focus-visible,
.kw-choice:focus-visible,
.kw-details summary:focus-visible { outline: 3px solid #ffd43b; outline-offset: 2px; }

.kw-progress { font-size: 1.1rem; font-weight: 800; }

/* ---------- 画面共通 ---------- */
.kw-screen {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 16px;
}

.kw-card {
  background: var(--kw-card);
  border-radius: var(--kw-radius);
  padding: 16px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

/* ---------- ボタン ---------- */
.kw-btn {
  display: block;
  width: 100%;
  min-height: 52px;
  padding: 12px 20px;
  border: 0;
  border-radius: 999px;
  font: inherit;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.3;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.08s ease, background-color 0.15s ease;
}
.kw-btn:active:not(:disabled) { transform: scale(0.97); }

.kw-btn--primary { background: var(--kw-primary); color: #fff; box-shadow: 0 4px 0 var(--kw-primary-dark); }
.kw-btn--primary:hover:not(:disabled) { background: #4263eb; }
.kw-btn--cta { min-height: 64px; font-size: 1.25rem; }
.kw-app a.kw-btn--x {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  background: #111; color: #fff; text-decoration: none;
}
.kw-app a.kw-btn--x:hover { background: #333; color: #fff; }
.kw-btn--ghost { background: transparent; color: #495057; border: 1px solid var(--kw-border); min-height: 48px; }

/* ---------- ① スタート画面 ---------- */
.kw-title {
  text-align: center;
  font-size: clamp(1.4rem, 5.5vw, 1.8rem);
  font-weight: 800;
  line-height: 1.35;
  padding-top: 4px;
}
.kw-title__sub { display: block; font-size: 0.7em; color: var(--kw-primary); }

.kw-rule__lead { text-align: center; font-size: 1.05rem; margin-bottom: 12px; }

/* 図解（HTML と CSS だけで描く） */
.kw-demo {
  margin-bottom: 14px;
  padding: 12px 8px;
  text-align: center;
  background: var(--kw-bg);
  border-radius: 12px;
}
.kw-demo__phrase { font-size: 1.15rem; font-weight: 700; }
.kw-demo__blank {
  display: inline-block;
  margin: 0 2px;
  padding: 0 6px;
  color: var(--kw-primary);
  background: #fff;
  border: 2px dashed var(--kw-primary);
  border-radius: 8px;
}
.kw-demo__choices { display: flex; justify-content: center; gap: 8px; margin-top: 10px; }
.kw-demo__choice {
  min-width: 2.4em;
  padding: 2px 10px;
  font-size: 0.95rem;
  color: var(--kw-muted);
  background: #fff;
  border: 1px solid var(--kw-border);
  border-radius: 8px;
}
.kw-demo__choice--on {
  color: #fff;
  font-weight: 800;
  background: var(--kw-primary);
  border-color: var(--kw-primary);
}

.kw-rule__list { font-size: 0.9rem; display: grid; gap: 4px; }
.kw-rule__list li { padding-left: 1.1em; position: relative; }
.kw-rule__list li::before { content: "●"; position: absolute; left: 0; color: var(--kw-primary); font-size: 0.6em; top: 0.5em; }

.kw-records { display: flex; justify-content: space-around; text-align: center; gap: 8px; }
.kw-records__item { flex: 1; }
.kw-records__item dt { font-size: 0.75rem; color: var(--kw-muted); }
.kw-records__item dd { font-size: 1.3rem; font-weight: 800; font-variant-numeric: tabular-nums; }
.kw-records__item:nth-child(2) dd { color: var(--kw-primary); }

.kw-details { padding: 4px 16px; font-size: 0.9rem; color: var(--kw-muted); }
.kw-details summary {
  display: flex;
  align-items: center;
  min-height: 44px;
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}
.kw-details summary::-webkit-details-marker { display: none; }
.kw-details summary::before { content: "▶"; margin-right: 8px; font-size: 0.75em; }
.kw-details[open] summary::before { content: "▼"; }
.kw-table { width: 100%; margin: 4px 0 8px; border-collapse: collapse; }
.kw-table th, .kw-table td { padding: 6px 4px; text-align: left; border-bottom: 1px solid var(--kw-border); }
.kw-table td:first-child { font-weight: 800; color: var(--kw-primary); }

/* スポンサー欄の置き場（中身は common/sponsor.js が出力する） */
.kw-zone { text-align: center; }
.kw-zone--start { margin-top: 8px; }
.kw-zone--result { margin-top: 48px; } /* 操作ボタンの下端から35px以上離す */

/* ---------- ② プレイ画面 ---------- */
.kw-question {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 150px;
  padding: 20px 12px;
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
}
.kw-question__text {
  width: 100%;
  font-size: 1.625rem;
  font-weight: 800;
  line-height: 1.6;
  text-align: center;
  overflow-wrap: anywhere;
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
}
.kw-question__blank {
  display: inline-block;
  min-width: 2.4em;
  margin: 0 2px;
  padding: 0 6px;
  color: var(--kw-primary);
  background: #edf2ff;
  border: 2px solid var(--kw-primary);
  border-radius: 8px;
}

.kw-choices {
  display: flex;
  flex-direction: column;
  gap: 12px;
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
}
.kw-choice {
  display: block;
  width: 100%;
  min-height: 56px;
  padding: 10px 16px;
  font: inherit;
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.4;
  text-align: center;
  color: var(--kw-text);
  background: #fff;
  border: 2px solid var(--kw-border);
  border-radius: 14px;
  box-shadow: 0 3px 0 #ced4da;
  cursor: pointer;
  overflow-wrap: anywhere;
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  transition: transform 0.05s ease, background-color 0.12s ease;
}
.kw-choice:hover:not(:disabled) { background: #f1f3f5; }
.kw-choice:active:not(:disabled) { transform: translateY(3px); box-shadow: 0 0 0 #ced4da; }
.kw-choice:disabled { color: #495057; background: #f1f3f5; cursor: default; }
.kw-choice[data-state="correct"] {
  color: #1b5e2e;
  background: #ebfbee;
  border-color: var(--kw-green);
  box-shadow: 0 0 0 3px #b2f2bb;
}
.kw-choice[data-state="wrong"] {
  color: #a61e1e;
  background: #fff5f5;
  border-color: var(--kw-red);
  box-shadow: 0 0 0 3px #ffc9c9;
}

.kw-explanation__judge { font-size: 1.5rem; font-weight: 900; }
.kw-explanation__judge[data-result="correct"] { color: var(--kw-green); }
.kw-explanation__judge[data-result="wrong"] { color: var(--kw-red); }
.kw-explanation__answer { margin-top: 4px; font-size: 1.1rem; font-weight: 800; }
.kw-explanation__meaning { margin-top: 6px; font-size: 1rem; line-height: 1.7; }

/* ---------- ③ 結果画面 ---------- */
.kw-result__title { text-align: center; font-size: 1.4rem; font-weight: 800; }
.kw-result__main { position: relative; text-align: center; padding-top: 24px; }

.kw-new-record {
  display: inline-block; margin-bottom: 8px; padding: 2px 14px;
  background: var(--kw-red); color: #fff;
  font-weight: 900; letter-spacing: 0.08em; border-radius: 999px;
  animation: kw-blink 0.9s ease-in-out infinite alternate;
}
@keyframes kw-blink { from { transform: scale(1); } to { transform: scale(1.08); } }

.kw-result__rank {
  width: 96px; height: 96px; margin: 0 auto 8px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%; color: #fff;
  font-size: 3.4rem; font-weight: 900; line-height: 1;
  background: var(--kw-muted);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  animation: kw-pop 0.5s;
}
.kw-result__rank[data-rank="S"] { background: var(--kw-gold); color: var(--kw-text); }
.kw-result__rank[data-rank="A"] { background: var(--kw-red); }
.kw-result__rank[data-rank="B"] { background: var(--kw-blue); }
.kw-result__rank[data-rank="C"] { background: var(--kw-green); }
.kw-result__rank[data-rank="D"] { background: var(--kw-muted); }
@keyframes kw-pop {
  0% { transform: scale(0.6); opacity: 0; }
  70% { transform: scale(1.12); opacity: 1; }
  100% { transform: scale(1); }
}

.kw-result__rank-label { font-size: 1.1rem; font-weight: 800; }
.kw-result__score { font-size: 2.6rem; font-weight: 900; line-height: 1.3; font-variant-numeric: tabular-nums; }

.kw-stats { display: flex; justify-content: space-around; text-align: center; gap: 8px; }
.kw-stats__item { flex: 1; }
.kw-stats__item dt { font-size: 0.75rem; color: var(--kw-muted); }
.kw-stats__item dd { font-size: 1.15rem; font-weight: 800; font-variant-numeric: tabular-nums; }

.kw-result-list { display: grid; gap: 12px; margin: 4px 0 8px; color: var(--kw-text); }
.kw-result-item { padding: 12px; background: var(--kw-bg); border-radius: 12px; }
.kw-result-item__phrase { font-size: 1.1rem; line-height: 1.6; overflow-wrap: anywhere; }
.kw-result-item__phrase strong { color: var(--kw-primary); }
.kw-result-item__answer { margin-top: 2px; font-weight: 800; }
.kw-result-item__judge { margin-top: 2px; font-weight: 800; overflow-wrap: anywhere; }
.kw-result-item__judge[data-result="correct"] { color: var(--kw-green); }
.kw-result-item__judge[data-result="wrong"] { color: var(--kw-red); }
.kw-result-item__meaning { margin-top: 4px; font-size: 1rem; line-height: 1.7; }

.kw-actions { display: grid; gap: 12px; }

/* ---------- レスポンシブ ---------- */
@media (max-width: 380px) {
  .kw-app { padding-left: 12px; padding-right: 12px; }
}
@media (min-width: 600px) {
  .kw-app { margin-top: 16px; margin-bottom: 16px; border-radius: 20px; box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12); }
}

/* 動きを減らす設定への配慮 */
@media (prefers-reduced-motion: reduce) {
  .kw-app *, .kw-app *::before, .kw-app *::after {
    animation: none !important;
    transition: none !important;
  }
}