/* ==============================
   自律神経クイズ — style.css
   ptcore デザインシステムに準拠
============================== */

/* ─── リセット & ベース ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* ptcore 共通カラー */
  --color-navy:     #0f2c5c;
  --color-blue:     #1a56db;
  --color-blue-lt:  #3b82f6;
  --color-teal:     #0d9488;
  --color-emerald:  #059669;
  --color-violet:   #6d28d9;
  --color-violet-lt:#7c3aed;
  --color-sky:      #e8f4fd;
  --color-bg:       #f8fbff;
  --color-white:    #ffffff;
  --color-gray-50:  #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-400: #9ca3af;
  --color-gray-600: #4b5563;
  --color-gray-800: #1f2937;
  --color-text:     #1e293b;
  --color-text-sub: #64748b;

  /* クイズアクセント（自律神経 = violet） */
  --color-accent:   #6d28d9;
  --color-accent-lt:#ede9fe;

  /* ○× 専用色 */
  --color-maru:     #059669;
  --color-maru-bg:  #ecfdf5;
  --color-batu:     #dc2626;
  --color-batu-bg:  #fef2f2;
  --color-correct:  #059669;
  --color-wrong:    #dc2626;

  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,.10), 0 2px 6px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 40px rgba(0,0,0,.12), 0 4px 12px rgba(0,0,0,.06);
  --shadow-xl: 0 20px 60px rgba(0,0,0,.14);

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;

  --font-base: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
  --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ==============================
   サイト共通ヘッダー
============================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-gray-200);
  box-shadow: var(--shadow-sm);
}

.site-header-inner {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 16px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-accent);
  padding: 6px 14px;
  border-radius: 50px;
  background: var(--color-accent-lt);
  transition: background var(--transition), color var(--transition);
}
.site-back-link:hover { background: #ddd6fe; }

.site-header-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-navy);
}

.site-logo-link {
  font-size: 1.1rem;
  font-weight: 900;
  letter-spacing: -0.02em;
}
.site-logo-pt {
  background: linear-gradient(135deg, var(--color-blue), var(--color-teal));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.site-logo-core { color: var(--color-navy); }

/* ==============================
   コンテナ
============================== */
.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

#app { min-height: calc(100vh - 56px); }

.screen { display: none; }
.screen.active { display: block; }

/* ==============================
   モード選択：ヒーロー
============================== */
.app-hero {
  text-align: center;
  padding: 36px 0 28px;
}

.app-hero-icon {
  width: 76px;
  height: 76px;
  background: linear-gradient(135deg, var(--color-accent), #4c1d95);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  box-shadow: 0 8px 24px rgba(109,40,217,.35);
  color: #fff;
}
.app-hero-icon svg { width: 42px; height: 42px; }

.app-hero-title {
  font-size: 1.9rem;
  font-weight: 900;
  color: var(--color-navy);
  margin-bottom: 8px;
}

.app-hero-desc {
  font-size: 0.95rem;
  color: var(--color-text-sub);
  margin-bottom: 4px;
}

.app-hero-count {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-accent);
  background: var(--color-accent-lt);
  padding: 3px 14px;
  border-radius: 50px;
  margin-top: 10px;
}

/* ==============================
   モード選択：モードカード
============================== */
.mode-section { margin-top: 8px; }

.mode-lead {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-sub);
  text-align: center;
  margin-bottom: 14px;
}

.mode-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mode-card {
  display: flex;
  align-items: center;
  gap: 16px;
  width: 100%;
  padding: 18px 20px;
  background: var(--color-white);
  border: 1.5px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  box-shadow: var(--shadow-sm);
  text-align: left;
  font-family: var(--font-base);
}
.mode-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.mode-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.mode-card-icon svg { width: 24px; height: 24px; }
.mode-card-icon--violet  { background: var(--color-accent-lt);       color: var(--color-accent); }
.mode-card-icon--emerald { background: rgba(5,150,105,.1);            color: var(--color-emerald); }
.mode-card-icon--teal    { background: rgba(13,148,136,.1);           color: var(--color-teal); }
.mode-card-icon--blue    { background: rgba(26,86,219,.1);            color: var(--color-blue); }

.mode-card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.mode-card-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-navy);
}
.mode-card-desc {
  font-size: 0.82rem;
  color: var(--color-text-sub);
}

.mode-card-badge {
  flex-shrink: 0;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 50px;
}
.mode-card-badge--violet  { background: var(--color-accent-lt);      color: var(--color-accent);  border: 1px solid rgba(109,40,217,.2); }
.mode-card-badge--emerald { background: rgba(5,150,105,.1);           color: var(--color-emerald); border: 1px solid rgba(5,150,105,.2); }
.mode-card-badge--teal    { background: rgba(13,148,136,.1);          color: var(--color-teal);    border: 1px solid rgba(13,148,136,.2); }
.mode-card-badge--blue    { background: rgba(26,86,219,.1);           color: var(--color-blue);    border: 1px solid rgba(26,86,219,.2); }

/* ==============================
   クイズ画面：トップバー
============================== */
.quiz-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.quiz-topbar-progress {
  display: flex;
  align-items: center;
  gap: 16px;
}

.quiz-progress-text {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-sub);
}

.quiz-score-text {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-accent);
}

.btn-quit {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 14px;
  background: none;
  border: 1px solid var(--color-gray-200);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-gray-600);
  cursor: pointer;
  font-family: var(--font-base);
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  flex-shrink: 0;
}
.btn-quit:hover {
  background: var(--color-gray-100);
  color: var(--color-wrong);
  border-color: var(--color-wrong);
}

/* ==============================
   プログレスバー
============================== */
.progress-bar-wrap {
  height: 5px;
  background: var(--color-gray-200);
  border-radius: 99px;
  overflow: hidden;
  margin-bottom: 20px;
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-violet-lt));
  border-radius: 99px;
  transition: width 0.4s ease;
}

/* ==============================
   問題カード
============================== */
.question-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 24px 24px 28px;
  box-shadow: var(--shadow-md);
  margin-bottom: 20px;
  border-top: 3px solid var(--color-accent);
}

.question-category {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 3px 12px;
  border-radius: 50px;
  margin-bottom: 14px;
}
.question-category--交感  { background: rgba(5,150,105,.1);   color: var(--color-emerald); }
.question-category--副交感 { background: rgba(13,148,136,.1);  color: var(--color-teal); }
.question-category--基本  { background: var(--color-accent-lt); color: var(--color-accent); }

.question-lead {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-text-sub);
  margin-bottom: 10px;
  text-transform: uppercase;
}

.question-text {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-navy);
  line-height: 1.7;
}

/* ==============================
   ○ × ボタン
============================== */
.answer-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 16px;
}

.btn-answer {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 24px 16px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-family: var(--font-base);
  transition: transform var(--transition), box-shadow var(--transition), border-width var(--transition);
  box-shadow: var(--shadow-sm);
  user-select: none;
}
.btn-answer:hover:not(:disabled) {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.btn-answer:disabled { opacity: 0.7; cursor: not-allowed; }

.btn-maru {
  border: 2.5px solid #d1fae5;
  color: var(--color-maru);
}
.btn-maru:hover:not(:disabled) {
  border-color: var(--color-maru);
  background: var(--color-maru-bg);
}

.btn-batu {
  border: 2.5px solid #fee2e2;
  color: var(--color-batu);
}
.btn-batu:hover:not(:disabled) {
  border-color: var(--color-batu);
  background: var(--color-batu-bg);
}

.btn-answer .answer-symbol {
  font-size: 3rem;
  line-height: 1;
  font-weight: 900;
}
.btn-answer .answer-label {
  font-size: 0.78rem;
  font-weight: 700;
  opacity: 0.75;
}

/* 選択中 */
.btn-maru.selected {
  border-color: var(--color-maru);
  background: var(--color-maru-bg);
  box-shadow: 0 0 0 3px rgba(5,150,105,.2);
  transform: translateY(-4px);
}
.btn-batu.selected {
  border-color: var(--color-batu);
  background: var(--color-batu-bg);
  box-shadow: 0 0 0 3px rgba(220,38,38,.2);
  transform: translateY(-4px);
}

/* 採点後：正解 */
.btn-answer.correct {
  border-color: var(--color-correct);
  background: var(--color-maru-bg);
  box-shadow: 0 0 0 3px rgba(5,150,105,.25);
}
/* 採点後：不正解選択 */
.btn-answer.wrong {
  border-color: var(--color-wrong);
  background: var(--color-batu-bg);
  box-shadow: 0 0 0 3px rgba(220,38,38,.25);
}

/* ==============================
   フィードバック
============================== */
.feedback {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 16px;
  overflow-wrap: break-word;
}
.feedback.hidden { display: none; }
.feedback.correct-feedback {
  background: #f0fdf4;
  border: 1.5px solid #86efac;
  color: #166534;
}
.feedback.wrong-feedback {
  background: #fff1f2;
  border: 1.5px solid #fca5a5;
  color: #991b1b;
}

/* ==============================
   共通ボタン行
============================== */
.btn-row {
  display: flex;
  gap: 10px;
}

.btn-primary {
  flex: 1;
  padding: 14px 20px;
  background: linear-gradient(135deg, var(--color-accent) 0%, #4c1d95 100%);
  color: #fff;
  border: none;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 700;
  font-family: var(--font-base);
  cursor: pointer;
  box-shadow: 0 4px 18px rgba(109,40,217,.35);
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}
.btn-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--color-violet-lt) 0%, var(--color-accent) 100%);
  box-shadow: 0 8px 30px rgba(109,40,217,.45);
  transform: translateY(-2px);
}
.btn-primary:disabled {
  background: var(--color-gray-400);
  box-shadow: none;
  cursor: not-allowed;
}

.btn-secondary {
  flex: 1;
  padding: 14px 20px;
  background: var(--color-white);
  color: var(--color-accent);
  border: 1.5px solid var(--color-accent);
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 700;
  font-family: var(--font-base);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  transition: background var(--transition), color var(--transition), transform var(--transition);
}
.btn-secondary:hover {
  background: var(--color-accent-lt);
  transform: translateY(-2px);
}

.hidden { display: none !important; }

/* ==============================
   結果画面
============================== */
.result-title {
  text-align: center;
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--color-navy);
  margin-bottom: 20px;
  padding-top: 8px;
}

.result-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow-xl);
  margin-bottom: 24px;
  border-top: 4px solid var(--color-accent);
}

.result-message {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 14px;
}

.result-fraction {
  font-size: 3.5rem;
  font-weight: 900;
  color: var(--color-navy);
  line-height: 1;
  margin-bottom: 8px;
}

.result-percent {
  font-size: 1rem;
  color: var(--color-text-sub);
}

/* 間違えた問題一覧 */
.wrong-list { margin-bottom: 20px; }

.wrong-list h3 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-wrong);
  margin-bottom: 12px;
}

.wrong-item {
  background: var(--color-white);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  margin-bottom: 10px;
  border-left: 4px solid var(--color-wrong);
  box-shadow: var(--shadow-sm);
}
.wrong-question {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 5px;
  line-height: 1.6;
}
.wrong-answer {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-correct);
  margin-bottom: 6px;
}
.wrong-explanation {
  font-size: 0.82rem;
  color: var(--color-text-sub);
  line-height: 1.65;
}

.all-correct {
  text-align: center;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-correct);
  padding: 20px;
  background: #f0fdf4;
  border-radius: var(--radius-sm);
  border: 1.5px solid #86efac;
  margin-bottom: 16px;
}

/* ==============================
   レスポンシブ
============================== */
@media (max-width: 480px) {
  .app-hero-title  { font-size: 1.6rem; }
  .question-text   { font-size: 1rem; }
  .btn-answer .answer-symbol { font-size: 2.4rem; }
  .result-fraction { font-size: 2.8rem; }
  .mode-card-name  { font-size: 0.95rem; }
}