:root {
  color-scheme: light;
  --page: #EEF1E6;
  --surface: #FFFFFF;
  --surface-2: #E7EBDC;
  --ink: #262B21;
  --ink-2: #545C49;
  --muted: #83897A;
  --border: rgba(38,43,33,0.16);
  --border-strong: #33392C;

  --accent: #4E8C2F;
  --accent-dark: #396A20;
  --accent-ink: #FFFFFF;
  --accent-wash: #DCEECB;

  --pop: #E85D82;
  --pop-dark: #CE4468;
  --pop-wash: #FBDEE6;

  --gold: #C68A1E;
  --gold-wash: #F6E4C0;

  --good: #1E8A4C;
  --good-wash: #DCEEDF;
  --bad: #C94A40;
  --bad-wash: #F5DEDB;

  --diff-easy: #1E8A4C;
  --diff-easy-wash: #DCEEDF;
  --diff-medium: #B47A12;
  --diff-medium-wash: #F3E3BE;
  --diff-hard: #C94A40;
  --diff-hard-wash: #F5DEDB;

  /* 正答率ベースの5段階難易度(易しい方から) */
  --diff-tier1: #1E8A4C;
  --diff-tier1-wash: #DCEEDF;
  --diff-tier2: #6E9A2E;
  --diff-tier2-wash: #E7EFD9;
  --diff-tier3: #B47A12;
  --diff-tier3-wash: #F3E3BE;
  --diff-tier4: #C97A35;
  --diff-tier4-wash: #F5E4D3;
  --diff-tier5: #C94A40;
  --diff-tier5-wash: #F5DEDB;

  --radius: 18px;
  --radius-sm: 11px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--page);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Hiragino Kaku Gothic ProN", "Yu Gothic", "Segoe UI", sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.app {
  max-width: 720px;
  margin: 0 auto;
  padding: calc(22px + env(safe-area-inset-top)) calc(16px + env(safe-area-inset-right)) calc(64px + env(safe-area-inset-bottom)) calc(16px + env(safe-area-inset-left));
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

/* 広い画面でも、内容は常に上寄せにする(画面の切り替えで、位置が上下に動かないように) */
@media (min-width: 900px) {
  .app {
    justify-content: flex-start;
  }
}

/* --- header --- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-kechu {
  width: 54px;
  height: 54px;
  object-fit: contain;
  flex: 0 0 auto;
}
.brand-text h1 {
  font-size: 22px;
  font-weight: 900;
  margin: 0;
  letter-spacing: -0.01em;
  color: var(--accent-dark);
}
.brand-dot { color: var(--pop); }
.tagline {
  margin: 2px 0 0;
  font-size: 12px;
  font-weight: 700;
  color: var(--ink-2);
  background: var(--surface);
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1.5px solid var(--border-strong);
}

.score-box {
  display: flex;
  align-items: center;
  gap: 8px;
}
.score {
  display: flex;
  align-items: baseline;
  gap: 3px;
  background: var(--surface);
  border: 1.5px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 7px 12px;
  font-variant-numeric: tabular-nums;
}
.score-num { font-size: 17px; font-weight: 800; }
.score-sep { color: var(--muted); font-size: 14px; }
.score-label {
  font-size: 11px;
  color: var(--muted);
  margin-left: 5px;
  align-self: center;
  font-weight: 700;
}
.streak {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--gold-wash);
  border: 1.5px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 7px 10px;
  font-weight: 800;
  font-size: 14px;
  color: var(--ink);
}
.streak-fire { font-size: 15px; }
.streak-label { font-size: 10px; color: var(--muted); font-weight: 700; }

.mistake-nav-btn {
  font: inherit;
  font-size: 13px;
  font-weight: 800;
  color: var(--ink-2);
  background: var(--surface);
  border: 1.5px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.12s;
}
.mistake-nav-btn:hover { background: var(--surface-2); }
.mistake-nav-btn span {
  font-variant-numeric: tabular-nums;
}

/* --- filters --- */
.filters {
  padding: 12px 16px;
  background: var(--surface);
  border: 1.5px solid var(--border-strong);
  border-radius: var(--radius);
}
.filters-summary {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 800;
  color: var(--ink-2);
  cursor: pointer;
  user-select: none;
  list-style: none;
}
.filters-summary::-webkit-details-marker { display: none; }
.filters-summary::before {
  content: "▶";
  font-size: 10px;
  color: var(--muted);
}
.filters[open] .filters-summary::before { content: "▼"; }
.filters[open] .filters-summary { margin-bottom: 12px; }
.filters-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.filter-group { display: flex; flex-direction: column; gap: 6px; }
.filter-label {
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 0.03em;
  color: var(--muted);
  text-transform: uppercase;
  white-space: nowrap;
}
.pill-row { display: flex; gap: 6px; flex-wrap: wrap; }
.pill {
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  padding: 6px 13px;
  border-radius: 999px;
  border: 1.5px solid var(--border-strong);
  background: var(--surface);
  color: var(--ink-2);
  cursor: pointer;
  transition: background 0.12s, color 0.12s;
}
.pill:hover { background: var(--surface-2); }
.pill.is-active {
  background: var(--accent);
  border-color: var(--accent-dark);
  color: var(--accent-ink);
}
.filter-count {
  margin-left: auto;
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

/* --- card --- */
.card {
  background: var(--surface);
  border: 1.5px solid var(--border-strong);
  border-radius: var(--radius);
  box-shadow: 0 3px 14px rgba(38,43,33,0.08);
  padding: 26px 22px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* iPad等、縦に余裕のある広い画面では、画面いっぱいに間延びさせず、自然な高さのままにする */
@media (min-width: 900px) {
  .card {
    flex: none;
  }
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.badge {
  font-size: 11.5px;
  font-weight: 800;
  padding: 4px 11px;
  border-radius: 999px;
  border: 1.5px solid var(--border-strong);
}
.badge-diff.diff-易 { color: var(--diff-easy); background: var(--diff-easy-wash); border-color: var(--diff-easy); }
.badge-diff.diff-中 { color: var(--diff-medium); background: var(--diff-medium-wash); border-color: var(--diff-medium); }
.badge-diff.diff-難 { color: var(--diff-hard); background: var(--diff-hard-wash); border-color: var(--diff-hard); }

.badge-diff.diff-易しい { color: var(--diff-tier1); background: var(--diff-tier1-wash); border-color: var(--diff-tier1); }
.badge-diff.diff-やや易 { color: var(--diff-tier2); background: var(--diff-tier2-wash); border-color: var(--diff-tier2); }
.badge-diff.diff-普通 { color: var(--diff-tier3); background: var(--diff-tier3-wash); border-color: var(--diff-tier3); }
.badge-diff.diff-やや難 { color: var(--diff-tier4); background: var(--diff-tier4-wash); border-color: var(--diff-tier4); }
.badge-diff.diff-難しい { color: var(--diff-tier5); background: var(--diff-tier5-wash); border-color: var(--diff-tier5); }
.badge-cat {
  color: var(--ink-2);
  background: var(--surface-2);
  border-color: var(--border);
}
.badge-acc {
  color: var(--accent-dark);
  background: var(--surface-2);
  border-color: var(--border);
}
.qid {
  margin-left: auto;
  font-size: 11.5px;
  font-weight: 700;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.question-text {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.75;
  margin: 0 0 22px;
  text-wrap: balance;
}
.question-text .blank {
  white-space: nowrap;
}

.choices {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 6px;
}
.choice {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  text-align: left;
  font: inherit;
  font-size: 15.5px;
  font-weight: 600;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border-strong);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s;
}
.choice:hover:not(:disabled) { background: var(--surface-2); }
.choice:disabled { cursor: default; }
.choice-letter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--surface-2);
  color: var(--ink-2);
  font-weight: 800;
  font-size: 13px;
  flex: 0 0 auto;
  border: 1.5px solid var(--border-strong);
}
.choice.is-correct {
  border-color: var(--good);
  background: var(--good-wash);
}
.choice.is-correct .choice-letter { background: var(--good); color: #fff; border-color: var(--good); }
.choice.is-wrong {
  border-color: var(--bad);
  background: var(--bad-wash);
}
.choice.is-wrong .choice-letter { background: var(--bad); color: #fff; border-color: var(--bad); }

/* --- feedback --- */
.feedback {
  margin-top: 4px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  border: 1.5px dashed var(--border);
}
.feedback-head {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.feedback-kechu {
  width: 40px;
  height: 40px;
  object-fit: contain;
  flex: 0 0 auto;
}
.feedback-bubble { flex: 1; min-width: 0; }
.feedback-top {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 800;
  font-size: 14.5px;
}
.kechu-line {
  margin: 3px 0 0;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-2);
}
.tested-point {
  margin: 8px 0 0;
  font-size: 13.5px;
  color: var(--ink-2);
}

.explain {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1.5px dashed var(--border);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.explain-row {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 10px;
  align-items: start;
}
.explain-label {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.03em;
  color: var(--muted);
  padding-top: 2px;
}
.explain-text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--ink);
}
.distractor-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.distractor-list li {
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-2);
}
.distractor-list .d-letter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 5px;
  background: var(--surface);
  border: 1.5px solid var(--border-strong);
  color: var(--ink-2);
  font-size: 11px;
  font-weight: 800;
  margin-right: 6px;
}

/* --- actions --- */
.actions {
  margin-top: auto;
  padding-top: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.btn {
  font: inherit;
  font-size: 14.5px;
  font-weight: 800;
  padding: 11px 22px;
  border-radius: 999px;
  border: 1.5px solid var(--border-strong);
  cursor: pointer;
  transition: background 0.12s, opacity 0.12s;
}
.btn:disabled {
  cursor: default;
  opacity: 0.55;
  pointer-events: none;
}
.btn-primary {
  background: var(--accent);
  border-color: var(--accent-dark);
  color: var(--accent-ink);
}
.btn-primary:hover { background: var(--accent-dark); }
.btn-ghost {
  background: var(--surface);
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  padding: 9px 14px;
}
.btn-ghost:hover { background: var(--surface-2); color: var(--ink-2); }
.btn-google {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: #fff;
  border-color: #dadce0;
  color: #3c4043;
}
.btn-google:hover { background: #f8f9fa; }
.google-icon { flex: none; }
.btn-apple {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: #000;
  border-color: #000;
  color: #fff;
}
.btn-apple:hover { background: #1a1a1a; }
.apple-icon { flex: none; }

/* --- footer --- */
.foot {
  text-align: center;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  line-height: 1.8;
}
.foot-sep {
  margin: 0 2px;
}
.foot-privacy {
  color: var(--muted);
  text-decoration: underline;
}
/* --- modal (report / mistakes) --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(20,20,10,0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 50;
}
.modal {
  background: var(--surface);
  border: 1.5px solid var(--border-strong);
  border-radius: var(--radius);
  box-shadow: 0 10px 30px rgba(20,20,10,0.18);
  width: 100%;
  max-width: 420px;
  padding: 24px 22px 22px;
}
.modal.modal-wide { max-width: 540px; }
.modal h2 {
  margin: 0 0 4px;
  font-size: 17px;
  font-weight: 900;
}
.modal-sub {
  margin: 0 0 18px;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--muted);
}
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}
.field label {
  font-size: 12px;
  font-weight: 800;
  color: var(--ink-2);
}
.field select,
.field textarea {
  font: inherit;
  font-size: 13.5px;
  padding: 9px 10px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border-strong);
  background: var(--surface);
  color: var(--ink);
  resize: vertical;
}
.modal-error {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--bad);
  margin: 0 0 10px;
}
.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}
.modal-done {
  text-align: center;
  padding: 10px 0 0;
}
.modal-done p {
  color: var(--good);
  font-weight: 800;
  margin: 0 0 14px;
}

/* --- mistake list --- */
.modal-head-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 4px;
}
.mistake-list {
  max-height: 60vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 16px 0;
  padding-right: 2px;
}
.mistake-empty {
  text-align: center;
  color: var(--muted);
  font-size: 13.5px;
  font-weight: 600;
  padding: 30px 10px;
}
.mistake-item {
  border: 1.5px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  overflow: hidden;
}
.mistake-item-head {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: none;
  border: none;
  font: inherit;
  text-align: left;
  cursor: pointer;
  color: var(--ink);
}
.mistake-item-q {
  flex: 1;
  min-width: 0;
  font-size: 13.5px;
  font-weight: 600;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.mistake-item-count {
  font-size: 11px;
  font-weight: 800;
  color: var(--bad);
  background: var(--bad-wash);
  border-radius: 999px;
  padding: 2px 8px;
  flex: 0 0 auto;
}
.mistake-item-body {
  padding: 4px 14px 14px;
  border-top: 1.5px dashed var(--border);
  font-size: 13px;
}
.mistake-item-body .mistake-question-full {
  margin: 10px 0 10px;
  font-weight: 600;
  color: var(--ink);
}
.mistake-item-body .choice-line {
  padding: 4px 0;
}
.mistake-item-body .choice-line.correct { color: var(--good); font-weight: 700; }
.mistake-item-body .mistake-translation {
  margin: 8px 0 0;
  color: var(--ink-2);
}
.mistake-remove {
  flex: 0 0 auto;
  background: none;
  border: none;
  color: var(--muted);
  font-size: 15px;
  cursor: pointer;
  padding: 2px 4px;
}
.mistake-remove:hover { color: var(--bad); }

@media (max-width: 480px) {
  .question-text { font-size: 16.5px; }
  .card { padding: 20px 16px 18px; }
  .brand-kechu { width: 46px; height: 46px; }
  .brand-text h1 { font-size: 19px; }
}

/* --- settings modal --- */
.settings-nav-btn {
  font-size: 18px;
  padding: 8px 10px;
  line-height: 1;
}
.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
}
.settings-label {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--ink-2);
}
.settings-toggle {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  accent-color: var(--accent);
}
.settings-divider {
  border: none;
  border-top: 1.5px solid var(--border-strong);
  margin: 6px 0 12px;
}
.settings-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 12px 0;
}
#downloadProgress {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 8px 0;
}
#downloadProgress progress {
  flex: 1;
  height: 10px;
  accent-color: var(--accent);
}
#downloadProgressLabel {
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.btn-link-danger {
  display: block;
  margin: 14px auto 0;
  background: none;
  border: none;
  color: #b3261e;
  font-size: 0.9rem;
  text-decoration: underline;
  cursor: pointer;
}

/* --- rating --- */
.rating-card { text-align: center; padding: 12px 8px; margin-bottom: 10px; background: var(--accent-wash); border-radius: var(--radius-sm); color: var(--accent-dark); }
.rating-card-top { display: flex; align-items: baseline; justify-content: center; gap: 10px; }
.rating-value { font-size: 40px; font-weight: 900; font-variant-numeric: tabular-nums; line-height: 1.1; }
.rating-title { font-size: 16px; font-weight: 800; }
.rating-meta { font-size: 12.5px; color: var(--ink-2); margin-top: 4px; }
.rating-spark { width: 100%; max-width: 320px; height: 70px; margin-top: 8px; }
.rating-nick { margin: 12px 0; }
.rating-nick-label { display: block; font-size: 13px; font-weight: 700; margin-bottom: 4px; }
.rating-nick-row { display: flex; gap: 8px; }
.rating-nick-input { flex: 1; min-width: 0; font: inherit; padding: 8px 10px; border: 1.5px solid var(--border-strong); border-radius: var(--radius-sm); background: var(--surface); }
.rating-nick-msg { font-size: 12.5px; margin: 4px 0 0; min-height: 1em; }
.rating-nick-msg.is-error { color: var(--bad); }
.rating-lb-title { font-size: 15px; margin: 16px 0 6px; }
.rating-lb { max-height: 40vh; overflow-y: auto; border: 1px solid var(--border-strong); border-radius: var(--radius-sm); }
.rating-lb-row { display: flex; align-items: center; gap: 8px; padding: 9px 10px; font-size: 15.5px; border-bottom: 1px solid var(--surface-2); min-height: 44px; }
.rating-lb-row:last-child { border-bottom: none; }
.rating-lb-row.is-me { background: var(--accent-wash); font-weight: 800; }
.rating-lb-rank { width: 28px; text-align: right; font-variant-numeric: tabular-nums; color: var(--muted); }
.rating-lb-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rating-lb-title-cell { font-size: 13px; color: var(--ink-2); white-space: nowrap; }
.rating-lb-rating { width: 52px; text-align: right; font-variant-numeric: tabular-nums; font-weight: 800; font-size: 16px; }
.rating-lb-report { font: inherit; font-size: 11px; color: var(--muted); background: none; border: none; text-decoration: underline; cursor: pointer; padding: 0 2px; }
.rating-lb-report-spacer { width: 24px; }
/* ヘッダー右上のボタン群は高さを揃える */
.score-box .score,
.score-box .mistake-nav-btn {
  box-sizing: border-box;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding-top: 0;
  padding-bottom: 0;
}
.rating-nav-btn { font-size: 12px; padding-left: 9px; padding-right: 9px; }

/* --- レート戦モード(別画面への切り替え) --- */
.rated-panel { display: none; margin-bottom: 14px; }
body.is-rated-mode .rated-panel { display: block; }
body.is-rated-mode .filters { display: none; }
/* ゲーム中だけ問題を表示する。待機中・結果表示中は、レート戦の画面(パネル)を出す */
body.is-rated-mode:not(.is-rated-playing) #quizCard { display: none; }
body.is-rated-playing .rated-panel { display: none; }
.rated-hud { display: none; margin-bottom: 10px; }
body.is-rated-playing .rated-hud { display: block; }
.rated-hud-row { display: flex; justify-content: space-between; align-items: baseline; font-weight: 800; margin-bottom: 4px; }
.rated-hud-time { font-size: 26px; font-variant-numeric: tabular-nums; }
.rated-hud-unit { font-size: 12px; color: var(--muted); margin-left: 2px; }
.rated-bar { height: 8px; background: var(--surface-2); border-radius: 999px; overflow: hidden; }
.rated-bar-fill { height: 100%; width: 100%; background: var(--accent); border-radius: 999px; transition: width 0.1s linear; }
.rated-hud.is-urgent .rated-bar-fill { background: var(--bad); }
.rated-hud.is-urgent .rated-hud-time { color: var(--bad); }
.rated-start { display: block; width: 100%; font-size: 18px; padding: 14px; margin: 0 0 8px; }
.rated-result { background: var(--surface); border: 1.5px solid var(--border-strong); border-radius: var(--radius-sm); padding: 12px; margin-bottom: 10px; }
.rated-result-score { font-size: 22px; font-weight: 900; text-align: center; }
.rated-result-delta { text-align: center; font-weight: 800; margin: 4px 0 8px; }
.rated-result-delta.is-up { color: var(--good); }
.rated-result-delta.is-down { color: var(--bad); }
.rated-heading { font-size: 18px; margin: 4px 0 8px; }
.rated-note { margin: 0 0 10px; }
.rated-ranking { background: var(--surface); border: 1.5px solid var(--border-strong); border-radius: var(--radius-sm); padding: 8px 12px; }
.rated-ranking-summary { cursor: pointer; font-weight: 800; font-size: 14px; }

/* ヘッダーのボタンは、狭い画面で連続正解バッジが出ても折り返し表示にする */
.score-box { flex-wrap: wrap; }
.score-label, .streak-label { white-space: nowrap; }
.rated-result .modal-sub { margin: 8px 0 0; }

/* --- レート戦: ○×の表示・結果画面・トップ画面 --- */
#quizCard { position: relative; }
body.is-rated-playing .actions { display: none; }
body.is-rated-mode .streak { display: none !important; }
/* 解答後、選択肢の上に大きく○×を出す(○は輪なので、選択肢の文字は読める) */
body.is-rated-playing .choice { position: relative; }
/* 印は選択肢の右端に置き、文字と重ならないようにする */
body.is-rated-playing .choice { padding-right: 56px; }
body.is-rated-playing .choice.is-correct::after,
body.is-rated-playing .choice.is-wrong::after {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 34px;
  font-weight: 900;
  line-height: 1;
  pointer-events: none;
  animation: ratedMarkPop 0.18s ease-out;
}
body.is-rated-playing .choice.is-correct::after { content: "○"; color: var(--good); }
body.is-rated-playing .choice.is-wrong::after { content: "×"; color: var(--bad); }
@keyframes ratedMarkPop {
  from { transform: translateY(-50%) scale(0.4); opacity: 0; }
  to { transform: translateY(-50%) scale(1); opacity: 1; }
}
/* 選択肢を押していない「時間切れ」だけ、タイマーの横に出す */
.rated-timeout-note { color: var(--bad); font-weight: 800; font-size: 13px; text-align: right; margin-top: 4px; }
.rated-timeout-note[hidden] { display: none; }

.rated-result-score { font-size: 32px; font-weight: 900; text-align: center; }
.rated-result-delta { text-align: center; font-weight: 800; font-size: 18px; margin: 6px 0 4px; }
.rated-result-hint { text-align: center; font-size: 12.5px; color: var(--muted); margin: 0 0 8px; }
.rated-result-list { display: flex; flex-direction: column; gap: 8px; }
.rated-result-item { border: 1.5px solid var(--border-strong); border-radius: var(--radius-sm); background: var(--surface); overflow: hidden; }
.rated-result-item.is-ok { border-color: var(--good); }
.rated-result-item.is-ng { border-color: var(--bad); }
.rated-result-head { display: flex; align-items: flex-start; gap: 10px; width: 100%; text-align: left; font: inherit; font-size: 15px; line-height: 1.5; padding: 12px; background: none; border: none; cursor: pointer; color: var(--ink); }
.rated-result-mark { font-size: 24px; font-weight: 900; line-height: 1.2; width: 26px; text-align: center; flex: none; }
.rated-result-item.is-ok .rated-result-mark { color: var(--good); }
.rated-result-item.is-ng .rated-result-mark { color: var(--bad); }
.rated-result-q { flex: 1; min-width: 0; }
.rated-result-timeout { font-size: 11px; color: var(--bad); white-space: nowrap; align-self: center; }
.rated-result-chevron { font-size: 12px; color: var(--muted); align-self: center; transition: transform 0.15s; }
.rated-result-item.is-open .rated-result-chevron { transform: rotate(180deg); }
.rated-detail { display: none; padding: 4px 12px 14px; border-top: 1px dashed var(--border-strong); font-size: 14px; }
.rated-result-item.is-open .rated-detail { display: block; }
.rated-detail-q { font-weight: 700; margin: 10px 0 8px; }
.rated-detail-choices { display: flex; flex-direction: column; gap: 5px; margin-bottom: 8px; }
.rated-detail-choice { display: flex; gap: 8px; align-items: baseline; padding: 6px 8px; border: 1px solid var(--surface-2); border-radius: 8px; }
.rated-detail-choice.is-answer { background: var(--good-wash); border-color: var(--good); }
.rated-detail-choice.is-chosen-wrong { background: var(--bad-wash); border-color: var(--bad); }
.rated-detail-letter { font-weight: 800; width: 16px; }
.rated-detail-text { flex: 1; }
.rated-detail-tag { font-size: 11px; font-weight: 800; white-space: nowrap; }
.rated-detail-timeout { color: var(--bad); font-size: 13px; margin: 0 0 8px; }
.rated-detail-row { margin-top: 8px; }
.rated-detail-label { display: inline-block; font-size: 12px; font-weight: 800; color: var(--muted); margin-bottom: 2px; }
.rated-detail-body { margin: 0; white-space: pre-line; line-height: 1.6; }

.rated-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 0 0 12px; }
.rated-stat { background: var(--surface); border: 1.5px solid var(--border-strong); border-radius: var(--radius-sm); padding: 8px 4px; text-align: center; }
.rated-stat-value { font-size: 17px; font-weight: 800; font-variant-numeric: tabular-nums; }
.rated-stat-label { font-size: 11px; color: var(--muted); margin-top: 2px; }
.rated-nav { display: flex; gap: 8px; margin-bottom: 8px; }
.rated-nav .btn { flex: 1; }
.rated-sub-head { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.rated-sub-head .rated-heading { margin: 0; }
.rated-back { padding: 6px 10px; }
.rated-myrank { font-weight: 800; margin: 0 0 8px; }
.rating-nick-msg.is-ok { color: var(--good); }

/* --- ランキング行(名前・称号・TOEIC・X)とプロフィール入力 --- */
.rating-lb-main { flex: 1; min-width: 0; }
.rating-lb-main .rating-lb-name { display: block; font-weight: 700; }
.rating-lb-sub { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-top: 2px; }
.rating-lb-chip { font-size: 11px; padding: 1px 7px; border-radius: 999px; background: var(--surface-2); color: var(--ink-2); text-decoration: none; }
.rating-lb-x { color: var(--accent-dark); }
.rating-lb-row { align-items: flex-start; }
.rating-field-hint { font-size: 12px; color: var(--muted); margin: 4px 0 0; }
.rated-save { display: block; width: 100%; margin-top: 12px; }
.rating-nick input { width: 100%; box-sizing: border-box; }
.rated-hud-time { display: inline-block; min-width: 2.9em; text-align: right; font-variant-numeric: tabular-nums; }

/* ===== スマホ向けの見直し ===== */
/* 短いラベルは折り返さない。説明文は、区切りの良い位置で折り返す */
.btn, .mistake-nav-btn, .pill, .rated-stat-label, .rated-stat-value, .rating-title, .rating-lb-title-cell,
.rating-lb-chip, .rated-nav .btn, .badge { white-space: nowrap; }
.modal-sub, .rated-note, .rating-field-hint, .rated-result-hint { text-wrap: pretty; line-break: strict; }
.rated-result-q, .rated-detail-body, .rated-detail-q, .tagline { text-wrap: pretty; }
.brand-text h1 { text-wrap: balance; }

/* ランキングの行: 順位・名前・点数・通報の列を固定して、点数の位置をそろえる */
.rating-lb-rank { flex: none; }
.rating-lb-rating { flex: none; width: 52px; }
.rating-lb-report, .rating-lb-report-spacer { flex: none; width: 34px; text-align: right; }

/* レート戦のゲーム中は、スクロールせずに解答できるよう、余白を詰める */
body.is-rated-playing .app { padding-top: calc(10px + env(safe-area-inset-top)); padding-bottom: calc(14px + env(safe-area-inset-bottom)); gap: 8px; }
body.is-rated-playing .brand,
body.is-rated-playing .foot,
body.is-rated-playing .score,
body.is-rated-playing #mistakeListBtn,
body.is-rated-playing #settingsBtn,
body.is-rated-playing .card-meta { display: none; }
body.is-rated-playing .score-box { width: 100%; justify-content: flex-end; }
body.is-rated-playing .topbar { gap: 0; }
body.is-rated-playing .rated-hud { margin-bottom: 0; }
body.is-rated-playing .rated-hud-time { font-size: 24px; }
body.is-rated-playing #quizCard { padding: 14px 14px 12px; }
body.is-rated-playing .question-text { font-size: 17px; line-height: 1.6; margin-bottom: 12px; }
body.is-rated-playing .choices { gap: 8px; margin-bottom: 0; }
body.is-rated-playing .choice { padding: 10px 12px; font-size: 15px; }

/* 結果画面の「もう一度」は、得点のすぐ下に置く */
.rated-again { margin: 10px 0 6px; padding: 12px; font-size: 17px; }

@media (max-width: 420px) {
  .app { gap: 14px; }
  .rated-stats { gap: 6px; }
  .rated-stat-value { font-size: 16px; }
  .rating-value { font-size: 36px; }
  .rated-result-score { font-size: 28px; }
}

/* 狭い画面: ヘッダーのボタンを一回り小さくして、1行に収める */
@media (max-width: 380px) {
  .score-box { gap: 6px; }
  .score-box .mistake-nav-btn { font-size: 12px; padding-left: 8px; padding-right: 8px; }
  .score-box .settings-nav-btn { padding-left: 9px; padding-right: 9px; }
  .score-box .score { padding-left: 9px; padding-right: 9px; }
  .score-num { font-size: 16px; }
  .score-label { margin-left: 3px; font-size: 10.5px; }
}
/* ゲーム中は、問題カードを内容の高さに合わせる(下に大きな余白を出さない) */
body.is-rated-playing #quizCard { flex: none; }

/* 連続正解のバッジも小さくして、ヘッダーの1行に収める */
@media (max-width: 420px) {
  .streak { padding-left: 7px; padding-right: 7px; gap: 2px; }
  .streak-label { display: none; }
  .score-box { gap: 6px; }
  .score-box .mistake-nav-btn { padding-left: 9px; padding-right: 9px; }
}

/* --- ランキング: 1行表示・Xアイコン・ページ送り --- */
.rating-lb-row { flex-wrap: nowrap; }
/* 大きさの違う文字が混ざるので、中心ではなく文字の下端(ベースライン)でそろえる。
   背景のある部品(TOEICのラベル・Xアイコン・通報)は、行の中央に置く。 */
/* 行の高さは min-height ではなく余白で作る。min-height だと中身の箱に余りが生まれ、
   中央そろえの部品(TOEICのラベル・Xアイコン)だけが文字より下にずれてしまう。 */
.rating-lb-row { align-items: baseline; min-height: 0; padding-top: 11px; padding-bottom: 11px; }
.rating-lb-row .rating-lb-chip,
.rating-lb-row .rating-lb-x,
.rating-lb-row .rating-lb-report,
.rating-lb-row .rating-lb-report-spacer { align-self: center; }
.rating-lb-rank, .rating-lb-name, .rating-lb-title-cell, .rating-lb-rating { line-height: 1.2; }
/* 名前は伸ばさず、称号・TOEIC・Xを名前のすぐ右に置く。点数は右端にそろえる */
.rating-lb-row .rating-lb-name { flex: 0 1 auto; min-width: 0; max-width: 45%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 700; }
.rating-lb-row .rating-lb-rating { margin-left: auto; }
.rating-lb-rank { width: 26px; font-size: 14px; }
.rating-lb-x { display: inline-flex; align-items: center; justify-content: center; flex: none; width: 22px; height: 22px; border-radius: 6px; color: var(--ink); background: var(--surface-2); text-decoration: none; }
.rating-lb-x:hover { background: var(--border-strong); }
.rating-lb-xicon { width: 12px; height: 12px; fill: currentColor; }
.rating-lb-pager { display: flex; align-items: center; justify-content: center; gap: 12px; margin-top: 10px; }
.rating-lb-pagebtn { padding: 7px 12px; font-size: 13px; }
.rating-lb-pagebtn:disabled { opacity: 0.4; cursor: default; }
.rating-lb-pageinfo { font-weight: 800; font-variant-numeric: tabular-nums; min-width: 56px; text-align: center; }
.rating-lb-jump { display: block; width: 100%; margin-top: 8px; font-size: 13px; }
@media (max-width: 420px) {
  .rating-lb-row { gap: 6px; padding-left: 8px; padding-right: 8px; font-size: 14.5px; }
  .rating-lb-title-cell { font-size: 12px; }
  .rating-lb-chip { padding: 1px 5px; }
}