/* =========================================================
   CSS Variables for Light/Dark Theme Support
   ========================================================= */
:root {
  /* ============ Base Colors ============ */
  --color-bg-body: #fafafa;
  --color-bg-container: #fff;
  --color-bg-container-alt: #f9f9f9;
  --color-bg-section: #f8f8f8;
  --color-bg-modal: #fff;
  --color-bg-purple-tint: #f8f8fc;

  /* ============ Text Colors ============ */
  --color-text-primary: #333;
  --color-text-secondary: #555;
  --color-text-tertiary: #666;
  --color-text-muted: #888;
  --color-text-light: #999;
  --color-text-inverse: #fff;

  /* ============ Brand Color (Purple) ============ */
  --color-brand: #8b6ccf;
  --color-brand-light: #a48cef;
  --color-brand-lighter: #b49cf5;
  --color-brand-dark: #7a5bb8;
  --color-brand-darker: #6b4cc0;
  --color-brand-bright: #9c80ff;
  --color-brand-pale: #f5f0ff;
  --color-brand-pale-alt: #f8f6ff;
  --color-brand-pale-lighter: #ece4ff;
  --color-brand-border: #d4c4f5;
  --color-brand-border-alt: #d0c8e0;
  --color-brand-bg: #e0d8f0;

  /* ============ Purple Variations ============ */
  --color-purple-dark: #5a4a8a;
  --color-purple-darker: #3a2a6a;
  --color-purple-pale: #f0e6ff;

  /* ============ Border Colors ============ */
  --color-border: #ddd;
  --color-border-light: #eee;
  --color-border-lighter: #e8e8e8;
  --color-border-dark: #ccc;
  --color-border-darker: #aaa;

  /* ============ Navbar & Footer ============ */
  --color-nav-bg: #2f2f2f;
  --color-nav-text: #f2f2f2;
  --color-nav-border: #444;
  --color-nav-link: #e0e0e0;
  --color-nav-divider: #555;
  --color-footer-bg: #2b2b2b;
  --color-footer-text: #d0d0d0;

  /* ============ Success Colors (Green) ============ */
  --color-success: #28a745;
  --color-success-bright: #22c55e;
  --color-success-dark: #16a34a;
  --color-success-darker: #2e7d32;
  --color-success-darkest: #155724;
  --color-success-medium: #4ca34b;
  --color-success-light: #6abf69;
  --color-success-lighter: #81d880;
  --color-success-pale: #f0fdf4;
  --color-success-pale-alt: #e8f5e9;
  --color-success-pale-darker: #a5d6a7;

  /* ============ Error Colors (Red) ============ */
  --color-error: #dc3545;
  --color-error-bright: #ef4444;
  --color-error-dark: #dc2626;
  --color-error-darker: #c82333;
  --color-error-darkest: #6e1a1a;
  --color-error-medium: #c45050;
  --color-error-light: #e07070;
  --color-error-lighter: #f08a8a;
  --color-error-pale: #fef2f2;
  --color-error-pale-alt: #fee2e2;
  --color-error-pale-lighter: #fff0f0;

  /* ============ Warning Colors (Orange/Amber) ============ */
  --color-warning: #e65100;
  --color-warning-bright: #f59e0b;
  --color-warning-dark: #d97706;
  --color-warning-darkest: #856404;
  --color-warning-medium: #ff9800;
  --color-warning-light: #f5a623;
  --color-warning-lighter: #fcd34d;
  --color-warning-pale: #fff3cd;
  --color-warning-pale-alt: #fff3e0;
  --color-warning-pale-darker: #ffe0b2;

  /* ============ Yellow/Gold Colors ============ */
  --color-yellow: #d4b13a;
  --color-yellow-dark: #5a5030;
  --color-yellow-medium: #7a6a1a;
  --color-yellow-light: #e6c84a;
  --color-yellow-lighter: #e0c860;
  --color-yellow-pale: #d0c8a8;
  --color-yellow-pale-alt: #e8e0c8;
  --color-yellow-pale-lighter: #f0ede4;
  --color-yellow-pale-lightest: #fffbf0;

  /* ============ Info Colors (Blue) ============ */
  --color-info: #2196F3;
  --color-info-dark: #1976d2;
  --color-info-darker: #01579b;
  --color-info-darkest: #004085;
  --color-info-medium: #2b6cb0;
  --color-info-light: #5b8def;
  --color-info-lighter: #b3e5fc;
  --color-info-pale: #e1f5fe;
  --color-info-pale-alt: #cce5ff;
  --color-info-pale-lighter: #f0f4f8;

  /* ============ Neutral Colors ============ */
  --color-dark: #1a1a2e;
  --color-black: #000;

  /* ============ Gray Scale ============ */
  --color-gray-50: #f5f5f5;
  --color-gray-100: #f0f0f0;
  --color-gray-200: #e8e8e8;
  --color-gray-300: #e0e0e0;
  --color-gray-400: #d0d0d0;
  --color-gray-500: #ccc;
  --color-gray-600: #bbb;
  --color-gray-700: #777;
  --color-gray-800: #666;
  --color-gray-850: #5a6268;
  --color-gray-900: #444;
}

/* ============================================================
   Dark Theme Variables
   ============================================================ */
[data-theme="dark"] {
  /* ============ Base Colors ============ */
  --color-bg-body: #1a1a1a;
  --color-bg-container: #242424;
  --color-bg-container-alt: #2a2a2a;
  --color-bg-section: #202020;
  --color-bg-modal: #2a2a2a;
  --color-bg-purple-tint: #2a243a;

  /* ============ Text Colors ============ */
  --color-text-primary: #e0e0e0;
  --color-text-secondary: #b8b8b8;
  --color-text-tertiary: #a0a0a0;
  --color-text-muted: #888;
  --color-text-light: #707070;
  --color-text-inverse: #000;

  /* ============ Brand Color (Purple) ============ */
  --color-brand: #a48cef;
  --color-brand-light: #b49cf5;
  --color-brand-lighter: #c8b4f0;
  --color-brand-dark: #8b6ccf;
  --color-brand-darker: #7a5bb8;
  --color-brand-bright: #b49cf5;
  --color-brand-pale: #2a243a;
  --color-brand-pale-alt: #30283f;
  --color-brand-pale-lighter: #35304a;
  --color-brand-border: #4a3a6a;
  --color-brand-border-alt: #3a3050;
  --color-brand-bg: #3a2a5a;

  /* ============ Purple Variations ============ */
  --color-purple-dark: #8b6ccf;
  --color-purple-darker: #7a5bb8;
  --color-purple-pale: #30283f;

  /* ============ Border Colors ============ */
  --color-border: #3a3a3a;
  --color-border-light: #303030;
  --color-border-lighter: #2c2c2c;
  --color-border-dark: #444;
  --color-border-darker: #555;

  /* ============ Navbar & Footer ============ */
  --color-nav-bg: #1a1a1a;
  --color-nav-text: #e0e0e0;
  --color-nav-border: #303030;
  --color-nav-link: #b8b8b8;
  --color-nav-divider: #3a3a3a;
  --color-footer-bg: #1a1a1a;
  --color-footer-text: #a0a0a0;

  /* ============ Success Colors (Green) ============ */
  --color-success: #22c55e;
  --color-success-bright: #4ade80;
  --color-success-dark: #16a34a;
  --color-success-darker: #15803d;
  --color-success-darkest: #14532d;
  --color-success-medium: #22c55e;
  --color-success-light: #4ade80;
  --color-success-lighter: #86efac;
  --color-success-pale: #1a3a2a;
  --color-success-pale-alt: #1e4a30;
  --color-success-pale-darker: #2a5a40;

  /* ============ Error Colors (Red) ============ */
  --color-error: #ef4444;
  --color-error-bright: #f87171;
  --color-error-dark: #dc2626;
  --color-error-darker: #b91c1c;
  --color-error-darkest: #7f1d1d;
  --color-error-medium: #ef4444;
  --color-error-light: #f87171;
  --color-error-lighter: #fca5a5;
  --color-error-pale: #3a1a1a;
  --color-error-pale-alt: #4a2020;
  --color-error-pale-lighter: #5a2828;

  /* ============ Warning Colors (Orange/Amber) ============ */
  --color-warning: #f59e0b;
  --color-warning-bright: #fbbf24;
  --color-warning-dark: #d97706;
  --color-warning-darkest: #78350f;
  --color-warning-medium: #f59e0b;
  --color-warning-light: #fbbf24;
  --color-warning-lighter: #fcd34d;
  --color-warning-pale: #3a2a1a;
  --color-warning-pale-alt: #4a3520;
  --color-warning-pale-darker: #5a4530;

  /* ============ Yellow/Gold Colors ============ */
  --color-yellow: #fbbf24;
  --color-yellow-dark: #a16207;
  --color-yellow-medium: #d97706;
  --color-yellow-light: #fbbf24;
  --color-yellow-lighter: #fcd34d;
  --color-yellow-pale: #3a3020;
  --color-yellow-pale-alt: #4a3a28;
  --color-yellow-pale-lighter: #5a4530;
  --color-yellow-pale-lightest: #6a5540;

  /* ============ Info Colors (Blue) ============ */
  --color-info: #3b82f6;
  --color-info-dark: #2563eb;
  --color-info-darker: #1e40af;
  --color-info-darkest: #1e3a8a;
  --color-info-medium: #3b82f6;
  --color-info-light: #60a5fa;
  --color-info-lighter: #93c5fd;
  --color-info-pale: #1a2a4a;
  --color-info-pale-alt: #1e3555;
  --color-info-pale-lighter: #254060;

  /* ============ Neutral Colors ============ */
  --color-dark: #e0e0e0;
  --color-black: #fff;

  /* ============ Gray Scale ============ */
  --color-gray-50: #303030;
  --color-gray-100: #363636;
  --color-gray-200: #3c3c3c;
  --color-gray-300: #424242;
  --color-gray-400: #4a4a4a;
  --color-gray-500: #555;
  --color-gray-600: #666;
  --color-gray-700: #888;
  --color-gray-800: #a0a0a0;
  --color-gray-850: #b0b0b0;
  --color-gray-900: #c0c0c0;
}

/* =========================================================
   共通スタイル (全画面)
   ========================================================= */
body {
  font-family: "Segoe UI", sans-serif;
  margin: 0;
  padding: 0;
  background-color: var(--color-bg-body);
  color: var(--color-text-primary);
  font-size: 15px;
  padding-top: 70px;
  /* ナビバーの高さ分の余白を追加 */

  /* テキスト選択禁止 */
  -webkit-user-select: none;
  /* Safari, Chrome */
  -moz-user-select: none;
  /* Firefox */
  -ms-user-select: none;
  /* IE10+, Edge */
  user-select: none;
  /* 標準 */

  /* タッチデバイスでの長押し禁止 */
  -webkit-touch-callout: none;
  /* iOS Safari */
}

/* =========================================================
   main要素の共通レイアウト設定（固定サイズ）
   ========================================================= */
.index-container,
.qcis-container,
.question-container,
.select-container {
  /* 固定の高さを設定（十分なバッファを確保してスクロール不要に） */
  height: 3400px;
  max-width: 1000px;
  margin: 20px auto;
  padding: 20px 30px;
  background: var(--color-bg-container);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  /* スクロールは基本的に不要だが、万一の場合に備えて */
  overflow-y: hidden;
}

.statisinfo-container {
  /* 表を追加したため高さを増加 */
  height: 3200px;
  max-width: 1000px;
  margin: 20px auto;
  padding: 20px 30px;
  background: var(--color-bg-container);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  overflow-y: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

/* =========================================================
   ナビバー
   ========================================================= */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  background-color: var(--color-nav-bg);
  color: var(--color-nav-text);
  border-bottom: 1px solid var(--color-gray-900);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  z-index: 1000;
}

#site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.5rem 1.5rem;
}

.site-title {
  font-weight: bold;
  font-size: 1.5rem;
  color: var(--color-brand);
  /* 紫系ポイントカラー */
  transition: color 0.3s ease;
}

.site-title:hover {
  color: var(--color-brand-light);
}

#global-nav {
  flex: 1;
}

#global-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

#global-nav li {
  position: relative;
  padding: 0 1rem;
}

#global-nav li:not(:last-child)::after {
  content: "";
  position: absolute;
  right: 0;
  top: 25%;
  height: 50%;
  width: 1px;
  background-color: var(--color-text-secondary);
}

#global-nav a {
  display: block;
  padding: 0.75rem 0;
  color: var(--color-gray-300);
  font-weight: 500;
  transition: color 0.3s ease, border-color 0.3s ease;
  border-bottom: 2px solid transparent;
}

#global-nav a:hover {
  color: var(--color-brand-lighter);
  border-bottom: 2px solid var(--color-brand);
}

/* =========================================================
   受験予定日カウントダウン（ナビバー内）
   ========================================================= */
.exam-countdown-text {
  color: var(--color-gray-400);
  font-size: 13px;
  white-space: nowrap;
}

.exam-countdown-text strong {
  color: var(--color-brand-pale-lighter);
}

.exam-countdown-days {
  color: var(--color-brand-lighter) !important;
  font-size: 1.1em;
}

.exam-countdown-link {
  color: var(--color-brand-lighter);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  border-bottom: 1px dashed var(--color-brand-lighter);
  transition: color 0.2s ease;
}

.exam-countdown-link:hover {
  color: var(--color-brand-border);
  border-bottom-color: var(--color-brand-border);
}

/* =========================================================
   フッター
   ========================================================= */
#global-footer {
  background-color: var(--color-footer-bg);
  color: var(--color-gray-400);
  border-top: 1px solid var(--color-gray-900);
  padding: 20px 0;
}

#global-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

#global-footer li {
  position: relative;
  padding: 0 1rem;
}

#global-footer li:not(:last-child)::after {
  content: "";
  position: absolute;
  right: 0;
  top: 30%;
  height: 40%;
  width: 1px;
  background-color: var(--color-text-secondary);
}

#global-footer a {
  color: var(--color-gray-400);
  transition: color 0.3s ease;
}

#global-footer a:hover {
  color: var(--color-brand-bright);
}

.copyright {
  text-align: center;
  font-size: 0.9em;
  color: var(--color-gray-700);
  padding-top: 10px;
}

/* =========================================================
   index.ejs 用スタイル
   ========================================================= */
/* 共通スタイルで設定済み */

/* トップページ セクション間の区切り */
.index-container #primary,
.index-container #announcements-section,
.index-container #random-question-section {
  margin-top: 30px;
  padding-top: 25px;
  border-top: 1px solid var(--color-border);
}

.index-container .primary-with-penguin {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

/* ペンギンと吹き出しのレイアウト（トップページ） */
.primary-with-penguin {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
}

/* 吹き出しスタイル */
.speech-bubble {
  position: relative;
  background: var(--color-brand-pale);
  border: 2px solid var(--color-brand);
  border-radius: 20px;
  padding: 20px 25px;
  max-width: 500px;
}

.speech-bubble::after {
  content: '';
  position: absolute;
  right: -20px;
  top: 50%;
  transform: translateY(-50%);
  border: 10px solid transparent;
  border-left-color: var(--color-brand-pale);
}

.speech-bubble::before {
  content: '';
  position: absolute;
  right: -24px;
  top: 50%;
  transform: translateY(-50%);
  border: 12px solid transparent;
  border-left-color: var(--color-brand);
}

.speech-bubble p {
  margin: 0;
  line-height: 1.8;
  color: var(--color-text-primary);
}

/* ペンギン画像 */
.penguin-image {
  flex-shrink: 0;
  width: 150px;
}

.penguin-image img {
  width: 100%;
  height: auto;
  pointer-events: none;
}

@media screen and (max-width: 700px) {
  .primary-with-penguin {
    flex-direction: column-reverse;
    gap: 15px;
  }

  .speech-bubble {
    max-width: 100%;
  }

  .speech-bubble::after {
    right: auto;
    left: 50%;
    top: -18px;
    transform: translateX(-50%);
    border: 10px solid transparent;
    border-bottom-color: var(--color-brand-pale);
    border-left-color: transparent;
  }

  .speech-bubble::before {
    right: auto;
    left: 50%;
    top: -22px;
    transform: translateX(-50%);
    border: 12px solid transparent;
    border-bottom-color: var(--color-brand);
    border-left-color: transparent;
  }

  .penguin-image {
    width: 120px;
  }
}

/* =========================================================
   トップページ 新着情報
   ========================================================= */
.announcements-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 15px;
}

.announcement-item {
  display: grid;
  grid-template-columns: 100px 95px 180px 1fr;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background-color: var(--color-bg-body);
  border: 1px solid var(--color-gray-200);
  border-radius: 6px;
}

.announcement-genre {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
  flex-shrink: 0;
}

.announcement-genre.news {
  background-color: var(--color-success-pale-alt);
  color: var(--color-success-darkest);
  border: 1px solid var(--color-success-pale-alt);
}

.announcement-genre.update {
  background-color: var(--color-info-pale-alt);
  color: var(--color-info-darkest);
  border: 1px solid var(--color-info-lighter);
}

.announcement-genre.bugfix {
  background-color: var(--color-warning-pale);
  color: var(--color-warning-darkest);
  border: 1px solid var(--color-warning-pale-darker);
}

.announcement-date {
  font-size: 13px;
  color: var(--color-gray-800);
  white-space: nowrap;
  flex-shrink: 0;
}

.announcement-title {
  font-weight: 600;
  font-size: 14px;
  color: var(--color-text-primary);
  flex-shrink: 0;
}

.announcement-content {
  flex: 1;
  margin: 0;
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

@media screen and (max-width: 768px) {
  .announcement-item {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .announcement-content {
    width: 100%;
  }
}

/* =========================================================
   トップページ ランダム問題プレビュー
   ========================================================= */
.random-question-preview {
  background-color: var(--color-bg-container-alt);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 20px;
  margin-top: 15px;
}

.random-question-meta {
  display: flex;
  gap: 20px;
  color: var(--color-text-secondary);
  font-size: 0.9em;
  margin-bottom: 15px;
  flex-wrap: wrap;
}

.random-question-img {
  text-align: center;
  margin: 15px 0;
}

.random-question-img img {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.random-question-body {
  font-size: 1.05em;
  line-height: 1.6;
  margin-bottom: 15px;
}

.random-question-blanks {
  margin-bottom: 20px;
}

.random-blank-block {
  border: 1px solid var(--color-gray-500);
  border-radius: 5px;
  padding: 12px;
  margin-bottom: 12px;
  background: var(--color-bg-container);
}

.random-blank-header h4 {
  margin: 0 0 10px 0;
  font-size: 1em;
}

.random-choice-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 15px;
}

.random-choice-cell {
  display: flex;
  align-items: center;
  gap: 8px;
}

.random-choice-btn-disabled {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--color-gray-600);
  border-radius: 5px;
  background: var(--color-gray-200);
  color: var(--color-gray-800);
  font-weight: 500;
  cursor: not-allowed;
}

.random-question-action {
  text-align: center;
  margin-top: 20px;
}

.btn-answer-link {
  display: inline-block;
  padding: 14px 40px;
  font-size: 1.1em;
  font-weight: bold;
  background: linear-gradient(135deg, var(--color-brand-light) 0%, var(--color-brand) 100%);
  color: white;
  border: none;
  border-radius: 50px;
  text-decoration: none;
  box-shadow: 0 4px 15px rgba(139, 108, 207, 0.3);
  transition: all 0.3s ease;
}

.btn-answer-link:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 20px rgba(139, 108, 207, 0.4);
  color: white;
}

@media screen and (max-width: 600px) {
  .random-choice-grid {
    grid-template-columns: 1fr;
  }

  .random-question-meta {
    flex-direction: column;
    gap: 5px;
  }

  .btn-answer-link {
    padding: 12px 30px;
    font-size: 1em;
  }
}

/* =========================================================
   question.ejs 用スタイル
   ========================================================= */
/* 共通スタイルで設定済み */

.question-container h2 {
  margin-top: 0;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.3em;
}

/* 進捗表示（問題番号/総問題数）*/
.question-progress-container {
  text-align: center;
  margin-bottom: 15px;
}

.question-progress {
  display: inline-block;
  font-size: 1.1em;
  font-weight: bold;
  color: var(--color-brand);
  background-color: var(--color-brand-pale);
  padding: 8px 16px;
  border-radius: 20px;
  border: 1px solid var(--color-brand-border);
  white-space: nowrap;
}

/* 問題ヘッダー（問題ID） */
.question-header {
  margin-bottom: 5px;
}

.question-header h2 {
  margin: 0;
}

.meta {
  color: var(--color-text-secondary);
  font-size: 0.9em;
  margin-top: 0.5em;
}

.img-area {
  text-align: center;
  margin: 20px 0;
}

.img-area img {
  max-width: 90%;
  height: auto;
  border-radius: 6px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
  object-fit: contain;
}

.body {
  font-size: 1.1em;
  margin: 10px 0;
  line-height: 1.6;
}

.blank-block {
  border: 1px solid var(--color-border-darker);
  border-radius: 5px;
  padding: 15px;
  margin-bottom: 20px;
  background: var(--color-bg-container-alt);
}

.blank-header {
  display: flex;
  align-items: center;
  gap: 15px;
}

.blank-header h3 {
  margin: 0;
}

.blank-explanation {
  margin-top: 1em;
}

.choice-btn {
  display: inline-block;
  margin: 5px 0;
  padding: 8px 15px;
  border: 1px solid var(--color-text-muted);
  border-radius: 5px;
  background: var(--color-gray-100);
  cursor: pointer;
  transition: background 0.1s;
}

.choice-btn:hover {
  background: var(--color-gray-300);
}

.resultArea {
  display: none;
  font-size: 1.1em;
  font-weight: bold;
}

.btn {
  margin-top: 20px;
  padding: 10px 16px;
  border-radius: 5px;
  border: 1px solid var(--color-gray-700);
  background-color: var(--color-gray-100);
  cursor: pointer;
}

.btn:hover {
  background-color: var(--color-gray-300);
}

/* 「次の問題へ」ボタン（btn-startと同配色、中央固定） */
.next-button-container {
  text-align: center;
  margin: 30px 0;
}

.btn-next {
  padding: 16px 60px;
  font-size: 1.3em;
  font-weight: bold;
  background: linear-gradient(135deg, var(--color-brand-light) 0%, var(--color-brand) 100%);
  color: white;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(139, 108, 207, 0.3);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.btn-next::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn-next:hover::before {
  width: 300px;
  height: 300px;
}

.btn-next:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 25px rgba(139, 108, 207, 0.4);
}

.btn-next:active {
  transform: scale(1.05);
}

.btn-next:disabled {
  background: linear-gradient(135deg, var(--color-gray-500) 0%, var(--color-border-darker) 100%);
  cursor: not-allowed;
  box-shadow: none;
}

.btn-next:disabled:hover {
  transform: none;
  box-shadow: none;
}

.btn-next:disabled::before {
  display: none;
}

/* =========================================================
   select_question.ejs 用スタイル
   ========================================================= */
/* 共通スタイルで設定済み */

.select-container h1 {
  text-align: center;
  margin-bottom: 20px;
}

/* ロゴ画像 */
.logo-image {
  text-align: center;
  margin-bottom: 30px;
}

.logo-image img {
  max-width: 200px;
  height: auto;
}

/* 横一列の選択コントロール */
.selection-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 30px;
  margin-bottom: 30px;
  padding: 20px;
  background-color: var(--color-bg-section);
  border-radius: 8px;
  border: 1px solid var(--color-gray-300);
  flex-wrap: wrap;
}

.control-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.control-label {
  font-weight: bold;
  font-size: 0.95em;
  color: var(--color-gray-900);
  white-space: nowrap;
}

.checkbox-area {
  display: flex;
  flex-direction: row;
  gap: 12px;
  align-items: center;
}

.checkbox-area label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9em;
  white-space: nowrap;
}

.question-limit-area {
  display: flex;
  flex-direction: row;
  gap: 12px;
  align-items: center;
}

#questionLimitSlider {
  flex: 1;
  min-width: 150px;
  max-width: 300px;
}

.question-limit-display {
  font-size: 0.95em;
  font-weight: 600;
  color: var(--color-purple);
  min-width: 60px;
  text-align: center;
}

.action-buttons {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.btn-action {
  padding: 6px 12px;
  border: 1px solid var(--color-text-muted);
  border-radius: 5px;
  background-color: var(--color-gray-100);
  cursor: pointer;
  font-size: 0.85em;
  transition: background 0.2s, transform 0.1s;
}

.btn-action:hover {
  background-color: var(--color-gray-300);
  transform: translateY(-1px);
}

/* 出題開始ボタン */
.start-button-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 30px 0;
}

.btn-start {
  padding: 16px 60px;
  font-size: 1.3em;
  font-weight: bold;
  background: linear-gradient(135deg, var(--color-brand-light) 0%, var(--color-brand) 100%);
  color: white;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(139, 108, 207, 0.3);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.btn-start::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn-start:hover::before {
  width: 300px;
  height: 300px;
}

.btn-start:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 25px rgba(139, 108, 207, 0.4);
}

.btn-start:active {
  transform: scale(1.05);
}

/* 中断再開ボタン */
.btn-resume {
  display: inline-block;
  padding: 16px 40px;
  font-size: 1.3em;
  font-weight: bold;
  background: white;
  color: var(--color-brand);
  border: 2px solid var(--color-brand);
  border-radius: 50px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.3s ease;
  margin-top: 12px;
  position: relative;
  overflow: hidden;
}

.btn-resume:hover {
  background: var(--color-brand);
  color: white;
  transform: scale(1.08);
  box-shadow: 0 6px 25px rgba(139, 108, 207, 0.4);
}

.btn-resume:active {
  transform: scale(1.05);
}

.section-title-row {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 20px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.section-title-row .section-title {
  margin-top: 0;
}

.section-title-row .action-buttons {
  flex-direction: row;
  gap: 10px;
}

.unanswered-only-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9em;
  font-weight: 500;
  color: var(--color-text-secondary);
  cursor: pointer;
  white-space: nowrap;
}

.section-title-row .unanswered-only-label {
  margin-left: auto;
}

.question-limit-area .unanswered-only-label {
  margin-left: 20px;
}

.unanswered-only-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--color-brand);
  cursor: pointer;
}

.section-title {
  font-weight: bold;
  margin-top: 20px;
  font-size: 1.1em;
}

/* カテゴリタブ（実践/手法） */
.category-tabs {
  display: flex;
  gap: 0;
  margin-top: 15px;
  margin-bottom: 0;
}

.category-tab {
  flex: 1;
  padding: 12px 20px;
  font-size: 1em;
  font-weight: 600;
  background-color: var(--color-gray-200);
  color: var(--color-gray-800);
  border: 1px solid var(--color-gray-500);
  border-bottom: none;
  border-radius: 8px 8px 0 0;
  cursor: pointer;
  transition: all 0.2s ease;
}

.category-tab:first-child {
  margin-right: -1px;
}

.category-tab:hover {
  background-color: var(--color-border);
  color: var(--color-gray-900);
}

.category-tab.active {
  background-color: var(--color-brand);
  color: white;
  border-color: var(--color-brand);
}

.category-panel {
  display: none;
}

.category-panel.active {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 0;
  padding: 15px;
  border: 1px solid var(--color-gray-500);
  border-top: none;
  border-radius: 0 0 8px 8px;
  background-color: var(--color-bg-body);
}

.large-category-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 0;
  padding: 15px;
  border: 1px solid var(--color-gray-500);
  border-top: none;
  border-radius: 0 0 8px 8px;
  background-color: var(--color-bg-body);
}

.large-category {
  border: 1px solid var(--color-border-darker);
  border-radius: 6px;
  padding: 10px;
  background-color: var(--color-bg-section);
  transition: box-shadow 0.2s ease;
}

.large-category:hover {
  box-shadow: 0 0 8px rgba(0, 0, 0, 0.1);
}

.large-header {
  display: flex;
  align-items: center;
  font-weight: bold;
  background: var(--color-gray-300);
  padding: 5px 8px;
  border-radius: 3px;
  transition: background 0.2s;
}

.large-header:hover {
  background: var(--color-gray-400);
}

.large-checkbox-label {
  display: flex;
  align-items: center;
  margin-right: 8px;
  cursor: pointer;
}

.large-category-checkbox {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--color-brand);
}

.large-header-text {
  cursor: pointer;
  flex: 1;
}

.small-list {
  margin-top: 5px;
  margin-left: 5px;
  display: block;
  font-size: 0.95em;
}

button {
  border: 1px solid var(--color-text-muted);
  border-radius: 5px;
  padding: 8px 16px;
  background-color: var(--color-gray-100);
  cursor: pointer;
  transition: background 0.2s;
}

button:hover {
  background-color: var(--color-gray-300);
}

/* =========================================================
   レスポンシブ対応
   ========================================================= */
@media screen and (max-width: 1000px) {

  /* 共通コンテナのレスポンシブ対応 */
  .index-container,
  .qcis-container,
  .question-container,
  .select-container {
    margin: 10px;
    max-width: calc(100% - 20px);
    height: 2800px;
  }

  .qcis-container {
    height: auto;
  }

  .statisinfo-container {
    margin: 10px;
    max-width: calc(100% - 20px);
    height: 3200px;
  }

  .large-category-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .selection-controls {
    flex-direction: column;
    gap: 15px;
  }

  .control-group {
    width: 100%;
  }

  .action-buttons {
    flex-direction: row;
    justify-content: center;
  }

  .btn-start {
    padding: 14px 50px;
    font-size: 1.2em;
  }

  .btn-resume {
    padding: 14px 30px;
    font-size: 1.2em;
  }
}

@media screen and (max-width: 600px) {

  /* 共通コンテナのモバイル対応 */
  .index-container,
  .qcis-container,
  .question-container,
  .select-container {
    padding: 15px;
    margin: 5px;
    max-width: calc(100% - 10px);
    height: 2800px;
  }

  .qcis-container {
    height: auto;
  }

  .statisinfo-container {
    padding: 15px;
    margin: 5px;
    max-width: calc(100% - 10px);
    height: 3200px;
  }

  .large-category-grid {
    grid-template-columns: 1fr;
  }

  .large-header {
    font-size: 1em;
  }

  #global-nav ul {
    flex-wrap: wrap;
  }

  #global-nav li {
    padding: 0.5rem;
  }

  .logo-image img {
    max-width: 150px;
  }

  .btn-start {
    padding: 12px 40px;
    font-size: 1.1em;
  }

  .btn-resume {
    padding: 12px 20px;
    font-size: 1.1em;
  }

  .action-buttons {
    flex-direction: column;
  }
}

/* =========================================================
   選択肢ボタンのレイアウト
   ========================================================= */
.choice-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px 18px;
  margin-top: 10px;
  justify-items: start;
}

.choice-cell {
  display: flex;
  align-items: center;
  gap: 8px;
}

@media screen and (max-width: 700px) {
  .choice-grid {
    grid-template-columns: 1fr;
  }
}

/* =========================================================
   オーバーレイ正解・不正解アニメーション
   ========================================================= */
.overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
  animation: overlayFadeOut 1.0s forwards ease-in;
}

@keyframes overlayFadeOut {
  0% {
    opacity: 1;
  }

  70% {
    opacity: 1;
  }

  100% {
    opacity: 0;
    display: none;
  }
}

/* === 正解（緑の〇） === */
.overlay.correct {
  background: rgba(144, 238, 144, 0.15);
}

.overlay.correct .overlay-content {
  position: relative;
  width: 150px;
  height: 150px;
}

.overlay.correct .overlay-content::before {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  border: 10px solid green;
  border-radius: 50%;
  box-shadow: 0 0 20px rgba(0, 255, 0, 0.4);
  transform: scale(0);
  animation: drawCircle 0.3s ease-out forwards;
}

@keyframes drawCircle {
  0% {
    transform: scale(0);
    opacity: 0.3;
  }

  60% {
    transform: scale(1.05);
    opacity: 1;
  }

  100% {
    transform: scale(1);
    opacity: 1;
  }
}

.overlay.correct::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: rgba(144, 238, 144, 0.4);
  transform: translate(-50%, -50%) scale(0);
  animation: rippleGreen 0.3s ease-out forwards;
}

@keyframes rippleGreen {
  0% {
    transform: translate(-50%, -50%) scale(0);
    opacity: 0.8;
  }

  70% {
    transform: translate(-50%, -50%) scale(5);
    opacity: 0.3;
  }

  100% {
    transform: translate(-50%, -50%) scale(7);
    opacity: 0;
  }
}

/* === 不正解（赤の×）=== */
.overlay.incorrect {
  background: rgba(255, 192, 203, 0.15);
}

.overlay.incorrect .overlay-content {
  position: relative;
  width: 140px;
  height: 140px;
}

.overlay.incorrect .overlay-content::before,
.overlay.incorrect .overlay-content::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 8px;
  background-color: red;
  opacity: 0.3;
  transform-origin: center center;
  border-radius: 4px;
  box-shadow: 0 0 10px rgba(255, 0, 0, 0.5);
  animation: drawXLine 0.3s ease-out forwards;
}

.overlay.incorrect .overlay-content::before {
  transform: translate(-50%, -50%) rotate(45deg);
}

.overlay.incorrect .overlay-content::after {
  transform: translate(-50%, -50%) rotate(-45deg);
}

@keyframes drawXLine {
  0% {
    width: 0;
    opacity: 0.3;
  }

  100% {
    width: 140px;
    opacity: 1;
  }
}

.overlay.incorrect::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 80px;
  height: 80px;
  border-radius: 10px;
  background: rgba(255, 100, 100, 0.4);
  transform: translate(-50%, -50%) scale(0);
  animation: rippleRed 0.3s ease-out forwards;
}

@keyframes rippleRed {
  0% {
    transform: translate(-50%, -50%) scale(0);
    opacity: 0.8;
  }

  70% {
    transform: translate(-50%, -50%) scale(5);
    opacity: 0.3;
  }

  100% {
    transform: translate(-50%, -50%) scale(7);
    opacity: 0;
  }
}

/* =========================================================
   qcis.ejs 用スタイル
   ========================================================= */
.qcis-container {
  height: auto;
  overflow-y: visible;
  line-height: 1.8;
}

.qcis-container h2 {
  margin-top: 1.5em;
  color: var(--color-gray-900);
  border-bottom: 2px solid var(--color-border);
  padding-bottom: 0.3em;
}

.qcis-container p,
.qcis-container dd,
.qcis-container dt {
  font-size: 1em;
  color: var(--color-text-primary);
}

.qcis-container dl {
  margin-left: 1.5em;
}

.qcis-container dt {
  font-weight: bold;
  margin-top: 1em;
}

.qcis-container h3 {
  margin-top: 1.2em;
  margin-bottom: 0.3em;
  font-size: 1.05em;
  color: var(--color-text-secondary);
  border-left: 4px solid var(--color-info-medium);
  padding-left: 0.6em;
}

.qcis-img {
  text-align: center;
  margin: 30px 0;
}

.qcis-img img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
  object-fit: contain;
}

/* テキストと画像を横並びにするスタイル */
.qcis-content-with-image {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  margin: 20px 0;
}

.qcis-text {
  flex: 1;
}

.qcis-img-side {
  flex-shrink: 0;
  width: 250px;
}

.qcis-img-side img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
  object-fit: contain;
}

/* レスポンシブ対応：画面が狭い場合は縦並びに */
@media screen and (max-width: 768px) {
  .qcis-content-with-image {
    flex-direction: column;
  }

  .qcis-img-side {
    width: 100%;
    text-align: center;
  }
}

/* --- 試験情報・制度セクション区切り --- */
.qcis-divider {
  margin-top: 3em;
  padding-top: 2em;
  border-top: 3px solid var(--color-info-medium);
}

.qcis-divider h2 {
  font-size: 1.5em;
  color: var(--color-info-medium);
  border-bottom: none;
  text-align: center;
  margin-bottom: 0;
}

/* --- テーブル --- */
.qcis-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1em 0 1.5em;
  font-size: 0.95em;
}

.qcis-table th,
.qcis-table td {
  border: 1px solid var(--color-gray-500);
  padding: 0.6em 1em;
  text-align: center;
}

.qcis-table thead th {
  background: var(--color-info-pale-lighter);
  color: var(--color-text-primary);
  font-weight: bold;
}

.qcis-table tbody tr:nth-child(even) {
  background: var(--color-bg-body);
}

/* --- リスト --- */
.qcis-list {
  margin: 0.3em 0 0.5em 1.5em;
  padding: 0;
  list-style: disc;
}

.qcis-list li {
  margin-bottom: 0.3em;
}

/* --- 関連リンク --- */
.qcis-link-list {
  list-style: none;
  padding: 0;
  margin: 1em 0;
}

.qcis-link-list li {
  margin-bottom: 0.8em;
}

.qcis-link-list a {
  color: var(--color-info-medium);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

.qcis-link-list a:hover {
  border-bottom-color: var(--color-info-medium);
}

/* --- 注意書き --- */
.qcis-notice {
  background: var(--color-yellow-pale-lightest);
  border-left: 4px solid var(--color-warning-light);
  padding: 0.8em 1em;
  margin: 1em 0;
  font-size: 0.9em;
}

/* --- レスポンシブ：テーブル横スクロール --- */
@media screen and (max-width: 768px) {
  .qcis-table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }
}

/* =========================================================
   statisinfo.ejs 用スタイル
   ========================================================= */
/* 共通スタイルで設定済み */

.statisinfo-container h1 {
  text-align: center;
  margin-bottom: 30px;
  color: var(--color-gray-900);
  border-bottom: 2px solid var(--color-border);
  padding-bottom: 0.5em;
}

.category-selector {
  text-align: center;
  margin-bottom: 30px;
  padding: 15px;
  background-color: var(--color-gray-50);
  border-radius: 8px;
}

.category-selector label {
  font-weight: bold;
  margin-right: 10px;
  font-size: 1.1em;
  color: var(--color-text-secondary);
}

.category-selector select {
  padding: 8px 16px;
  font-size: 1em;
  border: 1px solid var(--color-gray-500);
  border-radius: 5px;
  background-color: var(--color-bg-container);
  cursor: pointer;
  transition: border-color 0.3s ease;
}

.category-selector select:hover {
  border-color: var(--color-brand);
}

.category-selector select:focus {
  outline: none;
  border-color: var(--color-brand);
  box-shadow: 0 0 5px rgba(139, 108, 207, 0.3);
}

.chart-wrapper {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.chart-container {
  background-color: var(--color-bg-body);
  padding: 20px;
  border-radius: 8px;
  border: 1px solid var(--color-gray-300);
}

.chart-container h2 {
  text-align: center;
  margin-bottom: 20px;
  color: var(--color-text-secondary);
  font-size: 1.3em;
}

.chart-container canvas {
  max-height: 400px;
}

/* データ表コンテナ */
.data-table-container {
  margin-top: 40px;
  background-color: var(--color-bg-body);
  padding: 20px;
  border-radius: 8px;
  border: 1px solid var(--color-gray-300);
}

.data-table-container h2 {
  text-align: center;
  margin-bottom: 20px;
  color: var(--color-text-secondary);
  font-size: 1.3em;
}

.table-scroll-wrapper {
  max-height: 500px;
  overflow-y: auto;
  border: 1px solid var(--color-border);
  border-radius: 6px;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95em;
}

.data-table thead {
  position: sticky;
  top: 0;
  z-index: 1;
}

.data-table th {
  background-color: var(--color-brand);
  color: white;
  padding: 12px 15px;
  text-align: center;
  font-weight: 600;
  border-bottom: 2px solid var(--color-brand-dark);
  white-space: nowrap;
}

.data-table td {
  padding: 10px 15px;
  text-align: right;
  border-bottom: 1px solid var(--color-gray-300);
  white-space: nowrap;
}

.data-table td:first-child {
  text-align: center;
  font-weight: 500;
  background-color: var(--color-gray-50);
}

.data-table tbody tr:hover {
  background-color: var(--color-purple-pale);
}

.data-table tbody tr:nth-child(even) {
  background-color: var(--color-bg-body);
}

.data-table tbody tr:nth-child(even):hover {
  background-color: var(--color-purple-pale);
}

/* レスポンシブ対応（statisinfo） */
@media screen and (max-width: 768px) {
  .category-selector {
    padding: 10px;
  }

  .category-selector label {
    display: block;
    margin-bottom: 8px;
  }

  .chart-container {
    padding: 15px;
  }

  .chart-container h2 {
    font-size: 1.1em;
  }

  .data-table-container {
    padding: 15px;
  }

  .data-table-container h2 {
    font-size: 1.1em;
  }

  .data-table {
    font-size: 0.85em;
  }

  .data-table th,
  .data-table td {
    padding: 8px 10px;
  }
}

/* =========================================================
   コピー・選択抑制スタイル
   ========================================================= */
/* 入力フィールドのみ選択を許可 */
input,
textarea {
  -webkit-user-select: text !important;
  -moz-user-select: text !important;
  -ms-user-select: text !important;
  user-select: text !important;
}

/* 画像のドラッグ禁止 */
img {
  -webkit-user-drag: none;
  -khtml-user-drag: none;
  -moz-user-drag: none;
  -o-user-drag: none;
  pointer-events: none;
}

/* =========================================================
   認証機能用スタイル
   ========================================================= */

/* ナビバー内ログインボタン */
.btn-auth {
  padding: 6px 14px;
  background-color: var(--color-brand);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: background-color 0.3s ease;
}

.btn-auth:hover {
  background-color: var(--color-brand-dark);
}

/* 認証モーダル */
.auth-modal {
  display: none;
  position: fixed;
  z-index: 2000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(3px);
}

.auth-modal-content {
  position: relative;
  background-color: var(--color-bg-container);
  margin: 5% auto;
  padding: 0;
  border-radius: 12px;
  width: 90%;
  max-width: 450px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
  animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.auth-modal-close {
  position: absolute;
  right: 15px;
  top: 15px;
  color: var(--color-border-darker);
  font-size: 28px;
  font-weight: bold;
  cursor: pointer;
  transition: color 0.2s;
  z-index: 10;
}

.auth-modal-close:hover {
  color: var(--color-black);
}

/* タブ切り替え */
.auth-tabs {
  display: flex;
  border-bottom: 2px solid var(--color-gray-300);
  padding: 0 20px;
  background-color: var(--color-bg-container-alt);
  border-radius: 12px 12px 0 0;
}

.auth-tab {
  flex: 1;
  padding: 15px 20px;
  background: none;
  border: none;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-gray-800);
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
}

.auth-tab.active {
  color: var(--color-brand);
  font-weight: 600;
}

.auth-tab.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 3px;
  background-color: var(--color-brand);
}

.auth-tab:hover {
  color: var(--color-brand);
}

/* フォームコンテナ */
.auth-form-container {
  display: none;
  padding: 30px;
}

.auth-form-container.active {
  display: block;
}

.auth-form-container h2 {
  margin: 0 0 25px 0;
  color: var(--color-text-primary);
  font-size: 24px;
  text-align: center;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  color: var(--color-text-secondary);
  font-size: 14px;
  font-weight: 500;
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="email"] {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 14px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  box-sizing: border-box;
}

.form-group input:focus {
  outline: none;
  border-color: var(--color-brand);
  box-shadow: 0 0 0 3px rgba(139, 108, 207, 0.1);
}

.checkbox-group {
  display: flex;
  align-items: center;
}

.checkbox-group label {
  margin: 0;
  display: flex;
  align-items: center;
  cursor: pointer;
  font-size: 13px;
  color: var(--color-gray-800);
}

.checkbox-group input[type="checkbox"] {
  margin-right: 8px;
  cursor: pointer;
}

/* =========================================================
   ユーザーメニュー（navbar内）
   ========================================================= */
.user-menu {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: 20px;
}

.btn-logout {
  padding: 6px 14px;
  background-color: transparent;
  color: var(--color-gray-300);
  border: 1px solid var(--color-gray-800);
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  transition: all 0.2s ease;
}

.btn-logout:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: var(--color-text-muted);
}

.theme-toggle-btn {
  width: 40px;
  height: 40px;
  padding: 0;
  background-color: transparent;
  border: 1px solid var(--color-gray-800);
  border-radius: 50%;
  cursor: pointer;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.theme-toggle-btn:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: var(--color-brand);
  transform: scale(1.05);
}

.theme-toggle-btn:active {
  transform: scale(0.95);
}

.theme-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  user-select: none;
}

.account-btn {
  width: 40px;
  height: 40px;
  padding: 0;
  border: 2px solid var(--color-brand);
  border-radius: 50%;
  cursor: pointer;
  overflow: hidden;
  background: none;
  transition: all 0.2s ease;
}

.account-btn:hover {
  border-color: var(--color-brand-light);
  transform: scale(1.05);
}

.account-btn img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: auto;
}

/* =========================================================
   アカウント履歴モーダル
   ========================================================= */
.account-modal {
  display: none;
  position: fixed;
  z-index: 2000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(3px);
}

.account-modal-content {
  position: relative;
  background-color: var(--color-bg-container);
  margin: 5% auto;
  padding: 0;
  border-radius: 12px;
  width: 90%;
  max-width: 600px;
  max-height: 80vh;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
  animation: modalSlideIn 0.3s ease-out;
  display: flex;
  flex-direction: column;
}

.account-modal-close {
  position: absolute;
  right: 15px;
  top: 15px;
  color: var(--color-border-darker);
  font-size: 28px;
  font-weight: bold;
  cursor: pointer;
  transition: color 0.2s;
  z-index: 10;
}

.account-modal-close:hover {
  color: var(--color-black);
}

.account-modal-header {
  padding: 20px 25px 15px;
  border-bottom: 1px solid var(--color-gray-300);
}

.account-modal-header h2 {
  margin: 0;
  color: var(--color-text-primary);
  font-size: 22px;
}

/* タブ切り替え（履歴モーダル用） */
.account-tabs {
  display: flex;
  border-bottom: 2px solid var(--color-gray-300);
  padding: 0 20px;
  background-color: var(--color-bg-container-alt);
}

.account-tab {
  flex: 1;
  padding: 12px 20px;
  background: none;
  border: none;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-gray-800);
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
}

.account-tab.active {
  color: var(--color-brand);
  font-weight: 600;
}

.account-tab.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 3px;
  background-color: var(--color-brand);
}

.account-tab:hover {
  color: var(--color-brand);
}

/* 履歴コンテンツ */
.account-history-content {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  min-height: 300px;
}

.history-loading,
.history-empty {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 200px;
  color: var(--color-text-muted);
  font-size: 15px;
}

.history-list {
  overflow-x: auto;
}

.history-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.history-table thead th {
  background-color: var(--color-brand);
  color: var(--color-bg-container);
  padding: 8px 12px;
  text-align: left;
  font-weight: 600;
  font-size: 13px;
  white-space: nowrap;
  position: sticky;
  top: 0;
}

.history-table tbody tr {
  border-bottom: 1px solid var(--color-gray-200);
  transition: background-color 0.15s ease;
}

.history-table tbody tr:nth-child(even) {
  background-color: var(--color-bg-container-alt);
}

.history-table tbody tr:hover {
  background-color: var(--color-purple-pale);
}

.history-table td {
  padding: 7px 12px;
  vertical-align: middle;
  white-space: nowrap;
}

.history-question-link {
  color: var(--color-brand);
  font-weight: 600;
  text-decoration: none;
  font-family: "Consolas", "Monaco", monospace;
  transition: color 0.2s ease;
}

.history-question-link:hover {
  color: var(--color-brand-darker);
  text-decoration: underline;
}

.mastery-mark {
  font-weight: bold;
  font-size: 18px;
  display: inline-block;
  text-align: center;
  width: 28px;
}

.mastery-excellent {
  color: var(--color-success);
}

.mastery-good {
  color: var(--color-info);
}

.mastery-incorrect {
  color: var(--color-error);
}

.mastery-legend {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  padding: 8px 0;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.mastery-legend-item {
  display: flex;
  align-items: center;
  gap: 4px;
}

.mastery-legend-item .mastery-mark {
  font-size: 15px;
  width: auto;
}

/* =========================================================
   アカウント管理モーダル（新レイアウト）
   ========================================================= */
.account-modal-content.account-management {
  max-width: 1350px;
  max-height: 85vh;
}

.account-management-body {
  display: flex;
  min-height: 400px;
}

/* 左側メニュー */
.account-menu {
  width: 180px;
  background-color: var(--color-gray-50);
  border-right: 1px solid var(--color-gray-300);
  flex-shrink: 0;
}

.account-menu ul {
  list-style: none;
  margin: 0;
  padding: 10px 0;
}

.account-menu li {
  margin: 0;
  padding: 0;
}

.account-menu-item {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 12px 16px;
  border: none;
  background: none;
  cursor: pointer;
  font-size: 14px;
  color: var(--color-text-secondary);
  text-align: left;
  transition: all 0.2s ease;
}

.account-menu-item:hover {
  background-color: var(--color-gray-200);
  color: var(--color-text-primary);
}

.account-menu-item.active {
  background-color: var(--color-brand);
  color: white;
}

.menu-icon {
  margin-right: 10px;
  font-size: 16px;
}

.menu-label {
  font-weight: 500;
}

/* 右側コンテンツエリア */
.account-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.account-section {
  display: none;
  flex-direction: column;
  height: 100%;
  padding: 20px;
  overflow-y: auto;
}

.account-section.active {
  display: flex;
}

.account-section h3 {
  margin: 0 0 15px 0;
  color: var(--color-text-primary);
  font-size: 18px;
  border-bottom: 2px solid var(--color-brand);
  padding-bottom: 8px;
}

/* プロフィールセクション */
.profile-content {
  padding: 10px 0;
}

.profile-item {
  display: flex;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border-light);
}

.profile-label {
  width: 120px;
  font-weight: 600;
  color: var(--color-text-secondary);
  font-size: 14px;
}

.profile-value {
  flex: 1;
  color: var(--color-text-primary);
  font-size: 14px;
}

/* プロフィール編集ボタン・フォーム */
.btn-profile-edit {
  padding: 4px 12px;
  background-color: var(--color-brand);
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 12px;
  cursor: pointer;
  transition: background-color 0.2s ease;
  margin-left: 10px;
  flex-shrink: 0;
}

.btn-profile-edit:hover {
  background-color: var(--color-brand-dark);
}

.profile-edit-form {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: 10px;
}

.profile-edit-input {
  padding: 6px 10px;
  border: 1px solid var(--color-gray-500);
  border-radius: 4px;
  font-size: 14px;
  width: 180px;
  transition: border-color 0.2s ease;
}

.profile-edit-input:focus {
  outline: none;
  border-color: var(--color-brand);
  box-shadow: 0 0 0 2px rgba(139, 108, 207, 0.15);
}

.profile-edit-select {
  padding: 6px 10px;
  border: 1px solid var(--color-gray-500);
  border-radius: 4px;
  font-size: 14px;
  background-color: var(--color-bg-container);
  cursor: pointer;
  transition: border-color 0.2s ease;
}

.profile-edit-select:focus {
  outline: none;
  border-color: var(--color-brand);
  box-shadow: 0 0 0 2px rgba(139, 108, 207, 0.15);
}

.btn-profile-save {
  padding: 5px 12px;
  background-color: var(--color-success);
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 12px;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.btn-profile-save:hover {
  background-color: var(--color-success-darker);
}

.btn-profile-cancel {
  padding: 5px 12px;
  background-color: var(--color-gray-800);
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 12px;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.btn-profile-cancel:hover {
  background-color: var(--color-gray-850);
}

/* レスポンシブ対応（プロフィール編集） */
@media screen and (max-width: 768px) {
  .profile-edit-form {
    margin-left: 0;
    margin-top: 8px;
    flex-wrap: wrap;
  }

  .profile-edit-input {
    width: 100%;
  }
}

.profile-note,
.settings-note {
  margin-top: 20px;
  padding: 15px;
  background-color: var(--color-bg-container-alt);
  border-radius: 6px;
  color: var(--color-gray-800);
  font-size: 13px;
  text-align: center;
}

/* 設定セクション */
.settings-item {
  display: flex;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-border-light);
}

.settings-label {
  width: 140px;
  font-weight: 600;
  color: var(--color-text-secondary);
  font-size: 14px;
  flex-shrink: 0;
}

.settings-value {
  flex: 1;
  color: var(--color-text-primary);
  font-size: 14px;
}

.btn-settings-action {
  padding: 6px 14px;
  background-color: var(--color-brand);
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 13px;
  cursor: pointer;
  transition: background-color 0.2s ease;
  margin-left: 10px;
}

.btn-settings-action:hover {
  background-color: var(--color-brand-dark);
}

.settings-danger-zone {
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border-light);
  text-align: center;
}

.btn-danger {
  padding: 10px 24px;
  background-color: var(--color-error);
  color: white;
  border: none;
  border-radius: 5px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.btn-danger:hover {
  background-color: var(--color-error-darker);
}

/* 設定セクションレスポンシブ対応 */
@media screen and (max-width: 768px) {
  .settings-item {
    flex-wrap: wrap;
    gap: 8px;
  }

  .settings-label {
    width: 100%;
  }

  .settings-value {
    flex: none;
    width: auto;
  }

  .btn-settings-action {
    margin-left: 0;
  }
}

/* 学習履歴セクションのタブ調整 */
.account-section .account-tabs {
  margin-bottom: 15px;
  border-radius: 6px 6px 0 0;
}

/* レスポンシブ対応（アカウント管理） */
@media screen and (max-width: 768px) {
  .account-modal-content.account-management {
    max-width: 95%;
  }

  .account-management-body {
    flex-direction: column;
  }

  .account-menu {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--color-gray-300);
  }

  .account-menu ul {
    display: flex;
    padding: 0;
    overflow-x: auto;
  }

  .account-menu li {
    flex: 1;
    min-width: max-content;
  }

  .account-menu-item {
    justify-content: center;
    padding: 10px 12px;
    border-bottom: 2px solid transparent;
  }

  .account-menu-item.active {
    background-color: transparent;
    color: var(--color-brand);
    border-bottom: 2px solid var(--color-brand);
  }

  .account-section {
    padding: 15px;
  }

  .profile-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 5px;
  }

  .profile-label {
    width: 100%;
  }
}

/* レスポンシブ対応（アカウントモーダル） */
@media screen and (max-width: 768px) {
  .user-menu {
    gap: 8px;
    margin-left: 10px;
  }

  .account-btn {
    width: 35px;
    height: 35px;
  }

  .theme-toggle-btn {
    width: 35px;
    height: 35px;
    font-size: 16px;
  }

  .btn-logout {
    padding: 5px 10px;
    font-size: 12px;
  }

  .account-modal-content {
    width: 95%;
    margin: 10% auto;
    max-height: 85vh;
  }

  .account-modal-header {
    padding: 15px 20px 10px;
  }

  .account-modal-header h2 {
    font-size: 18px;
  }

  .account-tabs {
    padding: 0 10px;
  }

  .account-tab {
    padding: 10px 15px;
    font-size: 14px;
  }

  .account-history-content {
    padding: 15px;
  }

  .history-table {
    font-size: 13px;
  }

  .history-table thead th,
  .history-table td {
    padding: 6px 8px;
  }
}

@media screen and (max-width: 480px) {
  .user-menu {
    position: fixed;
    top: 80px;
    right: 10px;
    flex-direction: column;
    gap: 5px;
  }

  .btn-logout {
    order: 3;
  }

  .theme-toggle-btn {
    order: 2;
  }

  .account-btn {
    order: 1;
  }
}

.btn-submit {
  width: 100%;
  padding: 12px 20px;
  background-color: var(--color-brand);
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.3s ease, transform 0.1s ease;
}

.btn-submit:hover {
  background-color: var(--color-brand-dark);
}

.btn-submit:active {
  transform: scale(0.98);
}

.auth-message {
  margin-top: 15px;
  padding: 10px;
  border-radius: 5px;
  text-align: center;
  font-size: 14px;
  min-height: 20px;
}

.auth-footer {
  margin-top: 20px;
  text-align: center;
  padding-top: 15px;
  border-top: 1px solid var(--color-gray-300);
}

.forgot-password {
  color: var(--color-brand);
  text-decoration: none;
  font-size: 13px;
  transition: color 0.2s ease;
}

.forgot-password:hover {
  color: var(--color-brand-dark);
  text-decoration: underline;
}

/* レスポンシブ対応 */
@media screen and (max-width: 768px) {
  .auth-modal-content {
    width: 95%;
    margin: 10% auto;
  }

  .auth-form-container {
    padding: 20px;
  }

  .auth-form-container h2 {
    font-size: 20px;
  }
}

/* =========================================================
   達成度セクション用スタイル
   ========================================================= */
.achievement-content {
  flex: 1;
  overflow-y: auto;
  padding: 10px 0;
}

.achievement-data {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.achievement-section h4 {
  margin: 0 0 12px 0;
  font-size: 15px;
  color: var(--color-gray-900);
  font-weight: 600;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-gray-300);
}

/* 網羅度レポート（コンパクト表示） */
.coverage-section {
  background-color: var(--color-bg-container-alt);
  padding: 10px 14px;
  border-radius: 6px;
  border: 1px solid var(--color-gray-200);
}

.coverage-section h4 {
  margin: 0 0 8px 0;
  font-size: 13px;
  padding-bottom: 6px;
}

.coverage-bar-container {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.coverage-bar {
  width: 100%;
  height: 14px;
  background-color: var(--color-gray-300);
  border-radius: 7px;
  overflow: hidden;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.08);
}

.coverage-bar-fill {
  height: 100%;
  background: linear-gradient(135deg, var(--color-brand-light) 0%, var(--color-brand) 100%);
  border-radius: 7px;
  transition: width 0.5s ease-out;
}

.coverage-stats {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--color-text-secondary);
}

#coveragePercent {
  font-weight: 700;
  font-size: 14px;
  color: var(--color-brand);
}

/* カテゴリ別正解率 */
.category-section {
  background-color: var(--color-bg-body);
  padding: 15px;
  border-radius: 8px;
  border: 1px solid var(--color-gray-200);
  margin-top: 16px;
}

.category-accuracy-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.large-category-block {
  background-color: var(--color-bg-container);
  border: 1px solid var(--color-gray-300);
  border-radius: 6px;
}

.large-category-header {
  background-color: var(--color-brand);
  color: white;
  padding: 10px 14px;
  font-weight: 600;
  font-size: 14px;
}

.small-category-list {
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.small-category-item {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 28px;
}

.small-category-name {
  width: 140px;
  min-width: 100px;
  font-size: 13px;
  line-height: 1.4;
  color: var(--color-text-primary);
  flex-shrink: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.accuracy-bar-container {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.accuracy-bar {
  flex: 1;
  height: 22px;
  min-height: 22px;
  background-color: var(--color-gray-200);
  border-radius: 11px;
  overflow: hidden;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.08);
}

.accuracy-bar-fill {
  height: 100%;
  border-radius: 11px;
  transition: width 0.4s ease-out;
}

.accuracy-percent {
  width: 48px;
  min-width: 48px;
  text-align: right;
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text-primary);
  flex-shrink: 0;
}

.no-data-message {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 14px;
  padding: 20px 0;
}

/* カテゴリ名リンクスタイル */
a.small-category-link {
  color: var(--color-purple-dark);
  text-decoration: none;
  cursor: pointer;
  transition: color 0.2s ease;
}

a.small-category-link:hover {
  color: var(--color-brand);
  text-decoration: underline;
}

/* カテゴリ出題確認ポップアップ */
.category-confirm-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 10000;
  justify-content: center;
  align-items: center;
}

.category-confirm-overlay.active {
  display: flex;
}

.category-confirm-dialog {
  background: var(--color-bg-container);
  border-radius: 12px;
  padding: 28px 32px;
  max-width: 400px;
  width: 90%;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  text-align: center;
  animation: categoryConfirmIn 0.2s ease-out;
}

@keyframes categoryConfirmIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.category-confirm-message {
  font-size: 16px;
  color: var(--color-text-primary);
  margin: 0 0 24px;
  line-height: 1.6;
}

.category-confirm-message span {
  font-weight: 700;
  color: var(--color-purple-dark);
}

.category-confirm-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.btn-category-confirm {
  padding: 10px 28px;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  background: linear-gradient(135deg, var(--color-brand-light) 0%, var(--color-brand) 100%);
  color: var(--color-bg-container);
  transition: opacity 0.2s ease;
}

.btn-category-confirm:hover {
  opacity: 0.85;
}

.btn-category-cancel {
  padding: 10px 28px;
  border: 1px solid var(--color-gray-500);
  border-radius: 8px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  background: var(--color-bg-container);
  color: var(--color-gray-800);
  transition: background-color 0.2s ease;
}

.btn-category-cancel:hover {
  background-color: var(--color-gray-50);
}

/* 達成度タブのスタイル調整 */
.achievement-tabs {
  margin-bottom: 15px;
}

/* レスポンシブ対応（達成度） */
@media screen and (max-width: 768px) {
  .category-accuracy-list {
    grid-template-columns: 1fr;
  }

  .small-category-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .small-category-name {
    width: 100%;
  }

  .accuracy-bar-container {
    width: 100%;
  }

}

/* =========================================================
   アクティビティセクション
   ========================================================= */

/* 時間単位セレクタ */
.activity-unit-selector {
  display: flex;
  gap: 8px;
  margin-bottom: 15px;
  padding: 8px 0;
}

.activity-unit-btn {
  padding: 6px 14px;
  border: 1px solid var(--color-gray-500);
  border-radius: 20px;
  background: var(--color-bg-container);
  color: var(--color-gray-800);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.activity-unit-btn:hover {
  border-color: var(--color-brand);
  color: var(--color-brand);
}

.activity-unit-btn.active {
  background-color: var(--color-brand);
  color: white;
  border-color: var(--color-brand);
}

/* チャートコンテナ */
.activity-chart-container {
  position: relative;
  background-color: var(--color-bg-body);
  padding: 15px;
  border-radius: 8px;
  border: 1px solid var(--color-gray-200);
  height: 300px;
}

/* アクティビティタブの微調整 */
.activity-tabs {
  margin-bottom: 12px;
}

/* レスポンシブ対応（アクティビティ） */
@media screen and (max-width: 768px) {
  .activity-unit-selector {
    flex-wrap: wrap;
    gap: 6px;
  }

  .activity-unit-btn {
    padding: 5px 10px;
    font-size: 12px;
  }

  .activity-chart-container {
    padding: 10px;
    height: 250px;
  }
}

/* =========================================================
   レーダーチャートセクション
   ========================================================= */

.radar-tabs {
  margin-bottom: 15px;
}

.radar-legend {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 12px;
  padding: 8px 0;
}

.radar-legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.radar-legend-color {
  display: inline-block;
  width: 14px;
  height: 14px;
  border-radius: 3px;
}

.radar-content {
  flex: 1;
  overflow-y: auto;
  padding: 10px 0;
}

.radar-charts-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.radar-chart-block {
  background-color: var(--color-bg-container);
  border: 1px solid var(--color-gray-300);
  border-radius: 6px;
  min-width: 0;
}

.radar-chart-header {
  background-color: var(--color-brand);
  color: white;
  padding: 10px 14px;
  font-weight: 600;
  font-size: 14px;
  border-radius: 6px 6px 0 0;
}

.radar-chart-wrapper {
  padding: 15px;
  position: relative;
  aspect-ratio: 1;
}

/* レスポンシブ対応（レーダーチャート） */
@media screen and (max-width: 768px) {
  .radar-charts-container {
    grid-template-columns: 1fr;
  }

  .radar-chart-wrapper {
    padding: 10px;
  }
}

/* =========================================================
   終了時オーバーレイ
   ========================================================= */
.completion-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  justify-content: center;
  align-items: center;
  z-index: 10000;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  animation: completionFadeIn 0.3s ease-out;
}

@keyframes completionFadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

.completion-content {
  background: linear-gradient(135deg, var(--color-bg-container) 0%, var(--color-brand-pale-alt) 100%);
  padding: 50px 60px;
  border-radius: 20px;
  text-align: center;
  box-shadow: 0 20px 60px rgba(139, 108, 207, 0.4);
  animation: completionBounce 0.5s ease-out;
  max-height: 85vh;
  overflow-y: auto;
  width: 90%;
  max-width: 600px;
}

@keyframes completionBounce {
  0% {
    transform: scale(0.5);
    opacity: 0;
  }

  60% {
    transform: scale(1.1);
  }

  100% {
    transform: scale(1);
    opacity: 1;
  }
}

.completion-icon {
  font-size: 80px;
  margin-bottom: 20px;
  animation: completionIconPop 0.6s ease-out 0.2s both;
}

@keyframes completionIconPop {
  0% {
    transform: scale(0) rotate(-20deg);
  }

  50% {
    transform: scale(1.3) rotate(10deg);
  }

  100% {
    transform: scale(1) rotate(0deg);
  }
}

.completion-message {
  font-size: 2.2em;
  font-weight: bold;
  color: var(--color-brand);
  margin-bottom: 30px;
  text-shadow: 0 2px 4px rgba(139, 108, 207, 0.2);
}

.btn-completion-close {
  padding: 14px 50px;
  font-size: 1.1em;
  font-weight: bold;
  background: linear-gradient(135deg, var(--color-brand-light) 0%, var(--color-brand) 100%);
  color: white;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(139, 108, 207, 0.3);
  transition: all 0.3s ease;
}

.btn-completion-close:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 20px rgba(139, 108, 207, 0.4);
}

.btn-completion-close:active {
  transform: scale(1.02);
}

/* 終了オーバーレイ: 達成度セクション */
.completion-achievement {
  text-align: left;
  margin-bottom: 25px;
  max-width: 500px;
  width: 100%;
  margin-left: auto;
  margin-right: auto;
}

.completion-achievement-title {
  font-size: 1em;
  font-weight: 700;
  color: var(--color-text-secondary);
  margin-bottom: 14px;
  text-align: center;
  letter-spacing: 0.05em;
}

.completion-large-category {
  margin-bottom: 14px;
}

.completion-large-header {
  font-size: 0.85em;
  font-weight: 600;
  color: var(--color-bg-container);
  background-color: var(--color-brand);
  padding: 5px 10px;
  border-radius: 4px;
  margin-bottom: 8px;
}

.completion-small-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 0 4px;
}

.completion-small-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.completion-cat-name {
  font-size: 0.82em;
  color: var(--color-gray-900);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.completion-bar-wrapper {
  display: flex;
  align-items: center;
  gap: 10px;
}

.completion-bar-track {
  flex: 1;
  height: 18px;
  background-color: var(--color-gray-200);
  border-radius: 9px;
  position: relative;
  overflow: hidden;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.06);
}

.completion-bar-before {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background-color: var(--color-brand-border);
  border-radius: 9px;
  transition: width 0.6s ease-out;
  z-index: 1;
}

.completion-bar-after {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: linear-gradient(135deg, var(--color-brand-light) 0%, var(--color-brand) 100%);
  border-radius: 9px;
  transition: width 0.7s ease-out;
  z-index: 2;
}

.completion-bar-labels {
  display: flex;
  align-items: center;
  gap: 4px;
  min-width: 80px;
  justify-content: flex-end;
  flex-shrink: 0;
}

.completion-bar-percent {
  font-size: 0.95em;
  font-weight: 700;
  color: var(--color-text-primary);
  min-width: 36px;
  text-align: right;
}

.completion-bar-diff {
  font-size: 0.8em;
  font-weight: 600;
  transition: opacity 0.4s ease-in;
}

.completion-bar-diff.positive {
  color: var(--color-success);
}

.completion-bar-diff.negative {
  color: var(--color-error);
}

/* 凡例 */
.completion-legend {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 14px;
  font-size: 0.78em;
  color: var(--color-gray-800);
}

.completion-legend-item {
  display: flex;
  align-items: center;
  gap: 5px;
}

.completion-legend-color {
  display: inline-block;
  width: 14px;
  height: 10px;
  border-radius: 3px;
}

.completion-legend-color.before {
  background-color: var(--color-brand-border);
}

.completion-legend-color.after {
  background: linear-gradient(135deg, var(--color-brand-light) 0%, var(--color-brand) 100%);
}

/* レスポンシブ対応（終了オーバーレイ） */
@media screen and (max-width: 600px) {
  .completion-content {
    padding: 40px 30px;
    margin: 0 20px;
  }

  .completion-icon {
    font-size: 60px;
  }

  .completion-message {
    font-size: 1.6em;
  }

  .btn-completion-close {
    padding: 12px 40px;
    font-size: 1em;
  }

  .completion-achievement {
    max-width: 100%;
  }

  .completion-bar-labels {
    min-width: 65px;
  }

  .completion-cat-name {
    font-size: 0.78em;
  }
}

/* =========================================================
   sitemap.ejs 用スタイル
   ========================================================= */
.sitemap-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 20px 30px;
}

.sitemap-container h2 {
  color: var(--color-gray-900);
  border-bottom: 2px solid var(--color-brand);
  padding-bottom: 0.4em;
  margin-top: 2em;
  margin-bottom: 0.8em;
  font-size: 1.2em;
}

.sitemap-container h2:first-of-type {
  margin-top: 0.5em;
}

.sitemap-group {
  margin-bottom: 1.5em;
}

.sitemap-group ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sitemap-group > ul > li {
  border-bottom: 1px solid var(--color-border-light);
}

.sitemap-group > ul > li:last-child {
  border-bottom: none;
}

.sitemap-link {
  display: flex;
  align-items: center;
  padding: 12px 14px;
  color: var(--color-text-primary);
  text-decoration: none;
  transition: background-color 0.15s ease, color 0.15s ease;
  border-radius: 4px;
}

.sitemap-link:hover {
  background-color: var(--color-brand-pale);
  color: var(--color-brand);
}

.sitemap-icon {
  width: 24px;
  margin-right: 12px;
  font-size: 1.1em;
  text-align: center;
  flex-shrink: 0;
}

.sitemap-text {
  flex: 1;
}

.sitemap-title {
  font-weight: 600;
  font-size: 1em;
}

.sitemap-desc {
  font-size: 0.85em;
  color: var(--color-text-muted);
  margin-top: 2px;
}

.sitemap-auth-badge {
  display: inline-block;
  font-size: 0.7em;
  color: var(--color-brand);
  border: 1px solid var(--color-brand-border);
  background-color: var(--color-brand-pale);
  border-radius: 10px;
  padding: 1px 8px;
  margin-left: 8px;
  vertical-align: middle;
  white-space: nowrap;
}

.sitemap-sublist {
  list-style: none;
  margin: 0;
  padding: 0 0 0 36px;
}

.sitemap-sublist li {
  border-bottom: 1px dotted var(--color-border-light);
}

.sitemap-sublist li:last-child {
  border-bottom: none;
}

.sitemap-sublink {
  display: flex;
  align-items: center;
  padding: 8px 14px;
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.95em;
}

.sitemap-subicon {
  width: 20px;
  margin-right: 10px;
  font-size: 0.9em;
  text-align: center;
  flex-shrink: 0;
}

/* =========================================================
   検定シミュレーション
   ========================================================= */

.simulate-container {
  max-width: 1000px;
  margin: 20px auto;
  padding: 20px 30px;
  background: var(--color-bg-container);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

/* --- Top bar --- */
.sim-topbar {
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-brand);
  margin-bottom: 16px;
}

.sim-title {
  font-size: 1.4em;
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 0;
}

/* --- Premise bar (大前提の条件設定) --- */
.sim-premise-bar {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.sim-premise-card {
  display: flex;
  align-items: center;
  gap: 12px;
  background: linear-gradient(135deg, var(--color-brand-pale) 0%, var(--color-brand-pale-lighter) 100%);
  border: 2px solid var(--color-brand-lighter);
  border-radius: 10px;
  padding: 12px 18px;
  flex: 1;
  min-width: 200px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.sim-premise-card:hover {
  border-color: var(--color-brand);
  box-shadow: 0 2px 8px rgba(139, 108, 207, 0.15);
}

.sim-premise-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-brand);
  color: var(--color-bg-container);
  border-radius: 8px;
  font-size: 1.3em;
  font-weight: 700;
  flex-shrink: 0;
}

.sim-premise-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.sim-premise-label {
  font-size: 0.75em;
  font-weight: 700;
  color: var(--color-purple-dark);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.sim-premise-select-wrap {
  position: relative;
}

.sim-premise-select {
  width: 100%;
  padding: 6px 10px;
  border: 1px solid var(--color-brand-lighter);
  border-radius: 6px;
  font-size: 1em;
  font-weight: 600;
  color: var(--color-purple-darker);
  background: var(--color-bg-container);
  cursor: pointer;
  appearance: auto;
}

.sim-premise-select:focus {
  outline: none;
  border-color: var(--color-brand);
  box-shadow: 0 0 0 2px rgba(139, 108, 207, 0.25);
}

.sim-premise-eqvar .sim-toggle {
  margin-top: 2px;
}

/* Equal-variance toggle */
.sim-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.sim-toggle input[type="checkbox"] {
  display: none;
}

.sim-toggle-slider {
  width: 36px;
  height: 20px;
  background: var(--color-gray-500);
  border-radius: 10px;
  position: relative;
  transition: background 0.2s;
}

.sim-toggle-slider::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  background: var(--color-bg-container);
  border-radius: 50%;
  transition: transform 0.2s;
}

.sim-toggle input:checked + .sim-toggle-slider {
  background: var(--color-brand);
}

.sim-toggle input:checked + .sim-toggle-slider::after {
  transform: translateX(16px);
}

.sim-toggle-label {
  font-size: 0.85em;
  color: var(--color-text-secondary);
}

/* --- Main layout --- */
.sim-main-layout {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

/* --- Wizard pane (left) --- */
.sim-wizard-pane {
  width: 280px;
  flex-shrink: 0;
  background: var(--color-bg-purple-tint);
  border: 1px solid var(--color-brand-bg);
  border-radius: 8px;
  padding: 16px;
}

.sim-wizard-header {
  font-size: 1em;
  font-weight: 700;
  color: var(--color-purple-dark);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-brand-bg);
}

.sim-wizard-step {
  margin-bottom: 16px;
  opacity: 1;
  transition: opacity 0.2s;
}

.sim-wizard-step.disabled {
  opacity: 0.4;
  pointer-events: none;
}

.sim-wizard-number {
  display: inline-block;
  background: var(--color-brand);
  color: var(--color-bg-container);
  font-size: 0.75em;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 10px;
  margin-bottom: 6px;
}

.sim-wizard-question {
  font-size: 0.9em;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 8px;
}

.sim-wizard-options {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sim-wizard-btn {
  padding: 8px 12px;
  border: 1px solid var(--color-brand-border-alt);
  border-radius: 6px;
  background: var(--color-bg-container);
  color: var(--color-text-primary);
  font-size: 0.85em;
  text-align: left;
  cursor: pointer;
  transition: all 0.15s;
}

.sim-wizard-btn:hover {
  border-color: var(--color-brand);
  background: var(--color-brand-pale-alt);
}

.sim-wizard-btn.selected {
  border-color: var(--color-brand);
  background: var(--color-brand);
  color: var(--color-bg-container);
}

.sim-wizard-btn.sim-wizard-recommended {
  border-left: 3px solid var(--color-brand);
}

/* Recommendation */
.sim-wizard-recommendation {
  margin-top: 12px;
  padding: 10px;
  background: var(--color-purple-pale);
  border-radius: 6px;
  border-left: 3px solid var(--color-brand);
}

.sim-rec-title {
  font-size: 0.85em;
  font-weight: 600;
  color: var(--color-purple-dark);
  margin-bottom: 4px;
}

.sim-rec-reason {
  font-size: 0.8em;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.sim-rec-alt {
  font-size: 0.78em;
  color: var(--color-gray-700);
  margin-top: 6px;
  padding-top: 6px;
  border-top: 1px dashed var(--color-brand-border-alt);
}

/* --- Content pane (right) --- */
.sim-content-pane {
  flex: 1;
  min-width: 0;
}

/* --- Input card --- */
.sim-input-card {
  background: var(--color-bg-body);
  border: 1px solid var(--color-gray-300);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 12px;
}

.sim-input-placeholder {
  text-align: center;
  padding: 40px 20px;
  color: var(--color-text-light);
}

.sim-placeholder-icon {
  font-size: 2em;
  margin-bottom: 10px;
}

.sim-input-header {
  font-size: 1em;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-gray-300);
}

.sim-input-fields {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}

.sim-field-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sim-field-group label {
  font-size: 0.82em;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.sim-field-input {
  padding: 6px 10px;
  border: 1px solid var(--color-gray-500);
  border-radius: 4px;
  font-size: 0.9em;
  width: 100%;
  box-sizing: border-box;
}

.sim-field-input:focus {
  border-color: var(--color-brand);
  outline: none;
  box-shadow: 0 0 0 2px rgba(139, 108, 207, 0.15);
}

/* ANOVA group inputs */
.sim-anova-groups {
  margin-top: 12px;
}

.sim-anova-header {
  font-size: 0.85em;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.sim-anova-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.sim-anova-label {
  font-size: 0.82em;
  color: var(--color-text-secondary);
  width: 40px;
  flex-shrink: 0;
}

.sim-anova-input {
  padding: 5px 8px;
  border: 1px solid var(--color-gray-500);
  border-radius: 4px;
  font-size: 0.85em;
  width: 80px;
}

.sim-anova-input:focus {
  border-color: var(--color-brand);
  outline: none;
}

/* Chi2 grid */
.sim-chi2-grid {
  margin-top: 12px;
}

.sim-grid-header {
  font-size: 0.85em;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.sim-grid-table {
  border-collapse: collapse;
  width: auto;
}

.sim-grid-table th {
  font-size: 0.8em;
  color: var(--color-gray-800);
  padding: 4px 8px;
  text-align: center;
  background: var(--color-gray-50);
}

.sim-grid-table td {
  padding: 2px;
}

.sim-grid-input {
  width: 60px;
  padding: 4px 6px;
  border: 1px solid var(--color-gray-500);
  border-radius: 3px;
  font-size: 0.85em;
  text-align: center;
}

.sim-grid-input:focus {
  border-color: var(--color-brand);
  outline: none;
}

/* --- Preview card --- */
.sim-preview-card {
  background: var(--color-bg-purple-tint);
  border: 1px solid var(--color-brand-bg);
  border-radius: 8px;
  padding: 12px 16px;
  margin-bottom: 12px;
}

.sim-preview-header {
  font-size: 0.85em;
  font-weight: 600;
  color: var(--color-purple-dark);
  margin-bottom: 8px;
}

.sim-preview-body {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
}

.sim-preview-item {
  font-size: 0.85em;
  color: var(--color-text-primary);
}

.sim-preview-label {
  color: var(--color-gray-700);
}

.sim-preview-badges {
  margin-top: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.sim-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.78em;
  font-weight: 500;
}

.badge-ok {
  background: var(--color-success-pale-alt);
  color: var(--color-success-darker);
}

.badge-warn {
  background: var(--color-warning-pale-alt);
  color: var(--color-warning);
}

.badge-error {
  background: var(--color-error-pale-alt);
  color: var(--color-error-darker);
}

/* --- Action row --- */
.sim-action-row {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 16px;
}

.sim-btn-execute {
  padding: 10px 40px;
  background: var(--color-brand);
  color: var(--color-bg-container);
  border: none;
  border-radius: 6px;
  font-size: 1em;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.sim-btn-execute:hover:not(:disabled) {
  background: var(--color-brand-dark);
}

.sim-btn-execute:disabled {
  background: var(--color-gray-600);
  cursor: not-allowed;
}

/* --- Calc button --- */
.sim-btn-calc {
  padding: 10px 24px;
  background: var(--color-bg-container);
  color: var(--color-brand);
  border: 2px solid var(--color-brand);
  border-radius: 6px;
  font-size: 1em;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.sim-btn-calc:hover:not(:disabled) {
  background: var(--color-brand-pale);
}

.sim-btn-calc:disabled {
  border-color: var(--color-gray-600);
  color: var(--color-gray-600);
  cursor: not-allowed;
}

/* --- Calculation card --- */
.sim-calc-card {
  background: var(--color-yellow-pale-lightest);
  border: 1px solid var(--color-yellow-pale-alt);
  border-radius: 8px;
  padding: 16px 20px;
  margin-bottom: 12px;
}

.sim-calc-header {
  font-size: 0.9em;
  font-weight: 600;
  color: var(--color-yellow-medium);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-yellow-pale-alt);
}

.sim-calc-body {
  font-size: 1em;
  line-height: 2;
}

.sim-calc-step {
  margin-bottom: 12px;
  padding: 8px 12px;
  background: var(--color-bg-container);
  border-radius: 4px;
  border-left: 3px solid var(--color-yellow-pale);
}

.sim-calc-step-title {
  font-size: 0.85em;
  font-weight: 600;
  color: var(--color-yellow-medium);
  margin-bottom: 6px;
}

.sim-calc-step-note {
  font-size: 0.82em;
  color: var(--color-yellow-light);
  background: var(--color-yellow-pale-lightest);
  border-left: 3px solid var(--color-yellow-lighter);
  padding: 4px 10px;
  margin-bottom: 6px;
  border-radius: 0 4px 4px 0;
}

.sim-calc-formula {
  display: block;
  text-align: center;
  padding: 8px 0;
  overflow-x: auto;
}

.sim-calc-result {
  margin-top: 12px;
  padding: 12px 16px;
  background: var(--color-info-pale-alt);
  border-radius: 6px;
  border: 1px solid var(--color-info-lighter);
  text-align: center;
}

.sim-calc-result-label {
  font-size: 0.85em;
  color: var(--color-info-medium);
  margin-bottom: 4px;
}

.sim-calc-result-value {
  font-size: 1.2em;
  font-weight: 600;
  color: var(--color-purple-darker);
}

/* --- Deviation table (chi2 independence) --- */
.sim-calc-dev-table-wrapper {
  overflow-x: auto;
  margin-top: 8px;
}

.sim-calc-dev-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9em;
}

.sim-calc-dev-table th,
.sim-calc-dev-table td {
  border: 1px solid var(--color-yellow-pale);
  padding: 8px 10px;
  text-align: center;
  vertical-align: middle;
}

.sim-calc-dev-table thead th {
  background: var(--color-yellow-pale-lighter);
  font-weight: 600;
  color: var(--color-yellow-dark);
}

.sim-calc-dev-table tbody th {
  background: var(--color-yellow-pale-lighter);
  font-weight: 600;
  color: var(--color-yellow-dark);
  min-width: 60px;
}

.sim-calc-dev-table td {
  background: var(--color-bg-container);
  min-width: 100px;
}

.sim-calc-dev-cell {
  margin-bottom: 2px;
}

.sim-calc-dev-val {
  font-size: 0.85em;
  color: var(--color-info-medium);
  font-weight: 600;
}

.sim-calc-dev-colsum,
.sim-calc-dev-rowsum {
  font-size: 0.8em;
  color: var(--color-text-muted);
  font-weight: normal;
}

.sim-calc-dev-sum {
  font-weight: 600;
  color: var(--color-yellow-dark);
  background: var(--color-yellow-pale-lighter) !important;
}

.sim-calc-dev-grand {
  background: var(--color-yellow-pale-lighter) !important;
  font-weight: 700;
}

/* --- Result card --- */
.sim-result-card {
  border-radius: 8px;
  padding: 16px 20px;
  margin-bottom: 12px;
  text-align: center;
}

.sim-result-reject {
  background: var(--color-error-pale-alt);
  border: 2px solid var(--color-error);
}

.sim-result-accept {
  background: var(--color-success-pale-alt);
  border: 2px solid var(--color-success);
}

.sim-result-error {
  background: var(--color-warning-pale-alt);
  border: 2px solid var(--color-warning-medium);
}

.sim-result-decision {
  font-size: 1.15em;
  font-weight: 700;
}

.sim-result-reject .sim-result-decision {
  color: var(--color-error);
}

.sim-result-accept .sim-result-decision {
  color: var(--color-success);
}

.sim-result-error .sim-result-decision {
  color: var(--color-warning);
}

/* --- Graph card --- */
.sim-graph-card {
  background: var(--color-bg-container);
  border: 1px solid var(--color-gray-300);
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 12px;
}

.sim-graph-card canvas {
  display: block;
  width: 100%;
}

.sim-graph-legend {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 8px;
  font-size: 0.8em;
  color: var(--color-text-secondary);
}

.sim-legend-item {
  display: flex;
  align-items: center;
  gap: 4px;
}

.sim-legend-swatch {
  display: inline-block;
  width: 14px;
  height: 14px;
  border-radius: 2px;
}

.sim-legend-line {
  display: inline-block;
  width: 18px;
  height: 0;
  border-top: 2px solid;
}

/* --- Detail section --- */
.sim-detail-section {
  margin-bottom: 16px;
}

.sim-detail-toggle {
  display: block;
  width: 100%;
  padding: 8px;
  background: var(--color-gray-50);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 0.9em;
  color: var(--color-text-secondary);
  cursor: pointer;
  text-align: center;
}

.sim-detail-toggle:hover {
  background: var(--color-border-lighter);
}

.sim-detail-body {
  padding: 12px;
  border: 1px solid var(--color-border);
  border-top: none;
  border-radius: 0 0 6px 6px;
  background: var(--color-bg-body);
}

.sim-detail-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88em;
}

.sim-detail-table th {
  text-align: left;
  padding: 6px 12px;
  color: var(--color-text-secondary);
  font-weight: 500;
  width: 40%;
  border-bottom: 1px solid var(--color-border-light);
}

.sim-detail-table td {
  padding: 6px 12px;
  color: var(--color-text-primary);
  border-bottom: 1px solid var(--color-border-light);
}

.sim-detail-notes {
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px solid var(--color-gray-300);
}

.sim-detail-note {
  font-size: 0.82em;
  color: var(--color-gray-800);
  padding: 3px 0;
}

/* --- Responsive (1000px) --- */
@media (max-width: 1000px) {
  .simulate-container {
    margin: 10px;
    max-width: calc(100% - 20px);
  }
}

/* --- Responsive (600px) --- */
@media (max-width: 600px) {
  .simulate-container {
    padding: 15px;
    margin: 5px;
    max-width: calc(100% - 10px);
  }
}

/* --- Responsive (768px) --- */
@media (max-width: 768px) {

  .sim-premise-bar {
    flex-direction: column;
  }

  .sim-premise-card {
    min-width: unset;
  }

  .sim-main-layout {
    flex-direction: column;
  }

  .sim-wizard-pane {
    width: 100%;
  }

  .sim-input-fields {
    grid-template-columns: 1fr;
  }

  .sim-anova-row {
    flex-wrap: wrap;
  }

  .sim-anova-input {
    width: 70px;
  }
}

/* --- Distribution table (highlight) --- */
.sim-table-section {
  margin-top: 16px;
  background: var(--color-bg-container);
  border: 1px solid var(--color-gray-300);
  border-radius: 8px;
  padding: 16px;
}

.sim-table-header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border-light);
}

.sim-table-title {
  font-size: 1em;
  font-weight: 700;
  color: var(--color-text-primary);
}

.sim-table-note {
  font-size: 0.8em;
  color: var(--color-text-muted);
}

.sim-table-wrapper {
  overflow-x: auto;
}

.sim-dist-table {
  border-collapse: collapse;
  font-size: 0.85em;
  min-width: 100%;
}

.sim-dist-table th,
.sim-dist-table td {
  padding: 8px 12px;
  text-align: center;
  border: 1px solid var(--color-border);
}

.sim-dist-th-corner {
  background: var(--color-gray-50);
  color: var(--color-gray-800);
  font-weight: 600;
  font-style: italic;
}

.sim-dist-th-alpha {
  background: var(--color-gray-50);
  color: var(--color-text-secondary);
  font-weight: 600;
}

.sim-dist-th-df {
  background: var(--color-gray-50);
  color: var(--color-text-secondary);
  font-weight: 600;
  text-align: right;
  padding-right: 16px;
}

.sim-dist-td {
  background: var(--color-bg-container);
  color: var(--color-text-primary);
  font-family: "Consolas", "Monaco", monospace;
}

/* Highlight styles */
.sim-dist-highlight-col {
  background: var(--color-info-pale) !important;
  color: var(--color-info-dark);
}

.sim-dist-highlight-row {
  background: var(--color-yellow-pale-alt) !important;
}

.sim-dist-highlight-row.sim-dist-th-df {
  background: var(--color-warning-pale-darker) !important;
  color: var(--color-warning);
  font-weight: 700;
}

.sim-dist-highlight-cell {
  background: linear-gradient(135deg, var(--color-info-pale) 0%, var(--color-info-lighter) 100%) !important;
  color: var(--color-info-darker) !important;
  font-weight: 700;
  box-shadow: inset 0 0 0 2px var(--color-info-dark);
  position: relative;
}

/* Responsive */
@media (max-width: 768px) {
  .sim-table-header {
    flex-direction: column;
    gap: 4px;
  }

  .sim-dist-table th,
  .sim-dist-table td {
    padding: 6px 8px;
    font-size: 0.8em;
  }
}


/* ============================================================
 * Tools Tab System
 * ============================================================ */

.tools-tab-bar {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--color-gray-300);
  margin-bottom: 20px;
  padding: 0;
}

.tools-tab {
  flex: 1;
  padding: 12px 0;
  border: none;
  background: none;
  color: var(--color-gray-700);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  transition: color 0.2s, border-color 0.2s;
  white-space: nowrap;
  text-align: center;
}

.tools-tab:hover {
  color: var(--color-text-secondary);
}

.tools-tab.active {
  color: var(--color-brand);
  border-bottom-color: var(--color-brand);
}

.tools-tab-panels {
  display: grid;
  min-width: 0;
  overflow: hidden;
}

.tools-tab-panel {
  grid-area: 1 / 1;
  min-width: 0;
  visibility: hidden;
  pointer-events: none;
}

.tools-tab-panel.active {
  visibility: visible;
  pointer-events: auto;
}


/* ============================================================
 * Control Chart Simulator — Top Bar
 * ============================================================ */

.cc-topbar {
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-brand);
  margin-bottom: 16px;
}

.cc-title {
  font-size: 1.4em;
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 0;
}

/* ============================================================
 * Control Chart Simulator — Settings Bar
 * ============================================================ */

.cc-settings-bar {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.cc-setting-card {
  display: flex;
  align-items: center;
  gap: 12px;
  background: linear-gradient(135deg, var(--color-brand-pale-alt) 0%, var(--color-purple-pale) 100%);
  border: 1px solid var(--color-brand-bg);
  border-radius: 10px;
  padding: 10px 16px;
  flex: 1;
  min-width: 200px;
}

.cc-setting-icon {
  font-size: 1.4rem;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-brand);
  color: var(--color-bg-container);
  border-radius: 8px;
  flex-shrink: 0;
}

.cc-setting-content {
  flex: 1;
}

.cc-setting-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.cc-setting-select-wrap {
  position: relative;
}

.cc-setting-select {
  width: 100%;
  padding: 6px 10px;
  border: 1px solid var(--color-brand-border-alt);
  border-radius: 6px;
  background: var(--color-bg-container);
  font-size: 0.85rem;
  color: var(--color-text-primary);
  cursor: pointer;
  outline: none;
}

.cc-setting-select:focus {
  border-color: var(--color-brand);
  box-shadow: 0 0 0 2px rgba(139, 108, 207, 0.15);
}

/* Mode toggle */
.cc-mode-toggle {
  display: flex;
  gap: 0;
  background: var(--color-brand-bg);
  border-radius: 8px;
  overflow: hidden;
}

.cc-mode-btn {
  padding: 6px 14px;
  border: none;
  background: transparent;
  color: var(--color-gray-800);
  font-size: 0.83rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
  line-height: 1.2;
}

.cc-mode-btn.active {
  background: var(--color-brand);
  color: var(--color-bg-container);
  box-shadow: 0 2px 6px rgba(139, 108, 207, 0.3);
}

.cc-mode-btn:hover:not(.active) {
  background: rgba(139, 108, 207, 0.15);
}

/* Mode panels */
.cc-mode-panel {
  display: none;
}

.cc-mode-panel.active {
  display: block;
}

/* ============================================================
 * Control Chart Simulator — Chart Area
 * ============================================================ */

.cc-chart-area {
  background: var(--color-bg-container);
  border: 1px solid var(--color-gray-300);
  border-radius: 10px;
  padding: 10px;
  margin-bottom: 16px;
  overflow: hidden;
}

.cc-chart-area canvas {
  display: block;
  width: 100%;
}

.cc-chart-area-expert {
  position: relative;
}

/* ============================================================
 * Control Chart Simulator — Beginner Mode
 * ============================================================ */

/* Start row */
.cc-start-row {
  display: flex;
  justify-content: center;
  margin-bottom: 16px;
}

.cc-btn-start {
  padding: 12px 48px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-bg-container);
  background: linear-gradient(135deg, var(--color-brand) 0%, var(--color-brand-dark) 100%);
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  box-shadow: 0 3px 10px rgba(139, 108, 207, 0.25);
}

.cc-btn-start:hover {
  transform: translateY(-1px);
  box-shadow: 0 5px 15px rgba(139, 108, 207, 0.35);
}

.cc-btn-start:active {
  transform: translateY(0);
}

/* Answer row */
.cc-answer-row {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.cc-btn-normal,
.cc-btn-abnormal,
.cc-btn-hint {
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 700;
  border: 2px solid;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s;
  min-width: 120px;
}

.cc-btn-normal {
  color: var(--color-success);
  border-color: var(--color-success);
  background: var(--color-bg-container);
}

.cc-btn-normal:hover {
  background: var(--color-success);
  color: var(--color-bg-container);
}

.cc-btn-abnormal {
  color: var(--color-error);
  border-color: var(--color-error);
  background: var(--color-bg-container);
}

.cc-btn-abnormal:hover {
  background: var(--color-error);
  color: var(--color-bg-container);
}

.cc-btn-hint {
  color: var(--color-text-muted);
  border-color: var(--color-gray-500);
  background: var(--color-bg-container);
  font-weight: 500;
  font-size: 0.9rem;
}

.cc-btn-hint:hover:not(:disabled) {
  background: var(--color-gray-50);
  border-color: var(--color-border-darker);
  color: var(--color-text-secondary);
}

.cc-btn-hint:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Rule selection */
.cc-rule-select {
  text-align: center;
  margin-bottom: 16px;
}

.cc-rule-prompt {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}

.cc-rule-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 8px;
}

.cc-rule-btn {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 14px;
  border: 2px solid var(--color-brand-border-alt);
  border-radius: 8px;
  background: var(--color-bg-container);
  cursor: pointer;
  transition: all 0.2s;
  text-align: left;
}

.cc-rule-btn:hover {
  border-color: var(--color-brand);
  background: var(--color-brand-pale-alt);
  transform: translateY(-1px);
}

.cc-rule-num {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-bg-container);
  background: var(--color-brand);
  border-radius: 4px;
  padding: 3px 6px;
  white-space: nowrap;
  flex-shrink: 0;
  line-height: 1.3;
}

.cc-rule-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.cc-rule-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-primary);
  line-height: 1.3;
}

.cc-rule-desc {
  font-size: 0.73rem;
  color: var(--color-text-muted);
  line-height: 1.4;
  margin-top: 2px;
}

/* Feedback */
.cc-feedback {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  border-radius: 10px;
  margin-bottom: 16px;
  border: 1px solid;
}

.cc-feedback-correct {
  background: var(--color-success-pale);
  border-color: var(--color-success-lighter);
}

.cc-feedback-partial {
  background: var(--color-warning-pale-alt);
  border-color: var(--color-warning-lighter);
}

.cc-feedback-miss {
  background: var(--color-error-pale);
  border-color: var(--color-error-lighter);
}

.cc-feedback-false_alarm {
  background: var(--color-error-pale);
  border-color: var(--color-error-lighter);
}

.cc-feedback-icon {
  font-size: 2rem;
  font-weight: 700;
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.cc-feedback-correct .cc-feedback-icon {
  background: var(--color-success-pale);
  color: var(--color-success-dark);
}

.cc-feedback-partial .cc-feedback-icon {
  background: var(--color-warning-pale);
  color: var(--color-warning-dark);
}

.cc-feedback-miss .cc-feedback-icon,
.cc-feedback-false_alarm .cc-feedback-icon {
  background: var(--color-error-pale-alt);
  color: var(--color-error-dark);
}

.cc-feedback-body {
  flex: 1;
}

.cc-feedback-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 4px;
}

.cc-feedback-msg {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.cc-feedback-detail {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 6px;
  line-height: 1.4;
}

.cc-btn-next {
  padding: 10px 24px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-bg-container);
  background: var(--color-brand);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transition: background 0.2s;
}

.cc-btn-next:hover {
  background: var(--color-brand-dark);
}

/* Stats bar */
.cc-stats-bar {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  background: var(--color-bg-section);
  border-radius: 10px;
  border: 1px solid var(--color-border-light);
  flex-wrap: wrap;
}

.cc-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.cc-stat-label {
  font-size: 0.72rem;
  color: var(--color-text-light);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.cc-stat-value {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.cc-stat-correct {
  color: var(--color-success-dark);
}

.cc-stat-miss {
  color: var(--color-error-dark);
}

.cc-stat-false {
  color: var(--color-warning-dark);
}

.cc-btn-reset-stats {
  padding: 6px 10px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: var(--color-bg-container);
  font-size: 1rem;
  color: var(--color-text-light);
  cursor: pointer;
  transition: all 0.2s;
  line-height: 1;
}

.cc-btn-reset-stats:hover {
  color: var(--color-gray-800);
  border-color: var(--color-gray-600);
  background: var(--color-gray-50);
}

/* ============================================================
 * Control Chart Simulator — Expert Mode
 * ============================================================ */

/* Game bar */
.cc-game-bar {
  display: flex;
  gap: 20px;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark) 100%);
  border-radius: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.cc-game-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.cc-game-label {
  font-size: 0.65rem;
  color: rgba(255, 255, 255, 0.5);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.cc-game-value {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-bg-container);
  font-variant-numeric: tabular-nums;
}

/* Expert feedback flash */
.cc-expert-feedback {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: 12px 24px;
  border-radius: 10px;
  font-weight: 700;
  font-size: 1.1rem;
  text-align: center;
  z-index: 10;
  pointer-events: none;
  animation: cc-feedback-flash 0.3s ease-out;
}

.cc-expert-feedback-correct {
  background: rgba(22, 163, 74, 0.9);
  color: var(--color-bg-container);
}

.cc-expert-feedback-miss {
  background: rgba(220, 38, 38, 0.9);
  color: var(--color-bg-container);
}

.cc-expert-feedback-false_alarm {
  background: rgba(217, 119, 6, 0.9);
  color: var(--color-bg-container);
}

@keyframes cc-feedback-flash {
  0% { opacity: 0; transform: translate(-50%, -50%) scale(0.8); }
  100% { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}

/* Expert action buttons */
.cc-expert-actions {
  display: flex;
  justify-content: center;
  margin-bottom: 16px;
}

.cc-expert-action-row {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
}

.cc-btn-start-line {
  padding: 14px 48px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-bg-container);
  background: linear-gradient(135deg, var(--color-brand) 0%, var(--color-brand-dark) 100%);
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  box-shadow: 0 3px 10px rgba(139, 108, 207, 0.25);
}

.cc-btn-start-line:hover {
  transform: translateY(-1px);
  box-shadow: 0 5px 15px rgba(139, 108, 207, 0.35);
}

.cc-btn-alert {
  padding: 14px 40px;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-bg-container);
  background: linear-gradient(135deg, var(--color-error-bright) 0%, var(--color-error-dark) 100%);
  border: none;
  border-radius: 10px;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(239, 68, 68, 0.4);
  animation: cc-pulse 1.5s infinite;
  transition: transform 0.1s;
}

.cc-btn-alert:hover {
  transform: scale(1.03);
}

.cc-btn-alert:active {
  transform: scale(0.97);
  animation: none;
}

@keyframes cc-pulse {
  0% { box-shadow: 0 4px 15px rgba(239, 68, 68, 0.4); }
  50% { box-shadow: 0 4px 25px rgba(239, 68, 68, 0.6), 0 0 40px rgba(239, 68, 68, 0.15); }
  100% { box-shadow: 0 4px 15px rgba(239, 68, 68, 0.4); }
}

.cc-btn-pause,
.cc-btn-resume {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-bg-container);
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
}

.cc-btn-pause {
  background: linear-gradient(135deg, var(--color-warning-bright) 0%, var(--color-warning-dark) 100%);
  box-shadow: 0 3px 10px rgba(245, 158, 11, 0.25);
}

.cc-btn-pause:hover {
  transform: translateY(-1px);
  box-shadow: 0 5px 15px rgba(245, 158, 11, 0.35);
}

.cc-btn-resume {
  background: linear-gradient(135deg, var(--color-success-bright) 0%, var(--color-success-dark) 100%);
  box-shadow: 0 3px 10px rgba(34, 197, 94, 0.25);
}

.cc-btn-resume:hover {
  transform: translateY(-1px);
  box-shadow: 0 5px 15px rgba(34, 197, 94, 0.35);
}

.cc-btn-stop {
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-gray-800);
  background: var(--color-gray-200);
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 0.15s, background 0.15s;
}

.cc-btn-stop:hover {
  background: var(--color-gray-400);
  transform: translateY(-1px);
}

/* ============================================================
 * Control Chart Simulator — Responsive
 * ============================================================ */

@media (max-width: 768px) {
  .tools-tab-bar {
    overflow-x: auto;
  }

  .tools-tab {
    padding: 10px 0;
    font-size: 0.85rem;
  }

  .cc-settings-bar {
    flex-direction: column;
  }

  .cc-setting-card {
    min-width: unset;
  }

  .cc-answer-row {
    flex-direction: column;
    align-items: center;
  }

  .cc-btn-normal,
  .cc-btn-abnormal,
  .cc-btn-hint {
    width: 100%;
    max-width: 280px;
  }

  .cc-rule-grid {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .cc-rule-btn {
    padding: 8px 10px;
  }

  .cc-feedback {
    flex-direction: column;
    text-align: center;
  }

  .cc-game-bar {
    gap: 12px;
    padding: 10px 12px;
  }

  .cc-game-value {
    font-size: 1.1rem;
  }

  .cc-expert-action-row {
    flex-direction: column;
    align-items: stretch;
  }

  .cc-btn-alert {
    padding: 12px 30px;
    font-size: 1rem;
  }

  .cc-stats-bar {
    gap: 10px;
    padding: 10px 12px;
  }

  .cc-stat-value {
    font-size: 1.1rem;
  }
}

/* ============================================================
 * Distribution Family Map (dm-* prefix)
 * ============================================================ */

.dm-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-brand);
  margin-bottom: 16px;
  gap: 16px;
}

.dm-topbar-left {
  flex: 1;
  min-width: 0;
}

.dm-title {
  font-size: 1.4em;
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 0;
}

.dm-subtitle {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin: 4px 0 0;
}

/* Grade filter dropdown */
.dm-grade-filter {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.dm-grade-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.dm-grade-select-wrap {
  position: relative;
}

.dm-grade-select {
  appearance: none;
  -webkit-appearance: none;
  background: var(--color-bg-container);
  border: 1px solid var(--color-gray-400);
  border-radius: 6px;
  padding: 6px 32px 6px 12px;
  font-size: 0.9rem;
  color: var(--color-text-primary);
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%23888'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  transition: border-color 0.15s;
}

.dm-grade-select:hover {
  border-color: var(--color-brand);
}

.dm-grade-select:focus {
  outline: none;
  border-color: var(--color-brand);
  box-shadow: 0 0 0 2px rgba(139, 108, 207, 0.15);
}

/* Map area */
.dm-map-area {
  position: relative;
  background: var(--color-bg-body);
  border: 1px solid var(--color-gray-300);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 16px;
}

.dm-map-area canvas {
  display: block;
  width: 100%;
  cursor: default;
}

/* Legend */
.dm-legend-bar {
  display: flex;
  gap: 20px;
  justify-content: center;
  padding: 10px 0;
  margin-bottom: 16px;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.dm-legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.dm-legend-dot {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dm-legend-dot-discrete   { background: var(--color-warning-medium); }
.dm-legend-dot-continuous { background: var(--color-info-light); }
.dm-legend-hint {
  color: var(--color-border-darker);
  font-size: 11px;
  font-style: italic;
}

/* Detail panel */
.dm-detail-panel {
  background: var(--color-bg-container);
  border: 1px solid var(--color-gray-300);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 16px;
}

.dm-detail-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.dm-btn-back {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 6px 14px;
  color: var(--color-text-secondary);
  cursor: pointer;
  font-size: 0.9rem;
  transition: background 0.2s;
}

.dm-btn-back:hover {
  background: var(--color-gray-100);
}

.dm-detail-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.dm-detail-canvas-area {
  background: var(--color-bg-container);
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
  margin-bottom: 16px;
  overflow: hidden;
}

.dm-detail-canvas-area canvas {
  display: block;
  width: 100%;
}

/* Parameter controls */
.dm-param-controls {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.dm-param-group {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--color-brand-pale-alt);
  border: 1px solid var(--color-brand-bg);
  border-radius: 8px;
  padding: 8px 14px;
}

.dm-param-label {
  font-size: 0.85rem;
  color: var(--color-gray-800);
  font-weight: 600;
}

.dm-param-input {
  width: 70px;
  padding: 4px 8px;
  border: 1px solid var(--color-brand-border-alt);
  border-radius: 4px;
  font-size: 0.9rem;
  text-align: center;
}

.dm-param-input:focus {
  outline: none;
  border-color: var(--color-brand);
  box-shadow: 0 0 0 2px rgba(139, 108, 207, 0.15);
}

/* Slider */
.dm-slider-area {
  background: linear-gradient(135deg, var(--color-brand-pale) 0%, var(--color-brand-pale-lighter) 100%);
  border: 2px solid var(--color-brand-lighter);
  border-radius: 10px;
  padding: 16px 20px;
  margin-bottom: 16px;
}

.dm-slider-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 8px;
}

.dm-slider-value {
  color: var(--color-brand);
  font-size: 1.2rem;
  font-weight: 700;
}

.dm-slider {
  width: 100%;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--color-border);
  border-radius: 3px;
  outline: none;
}

.dm-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-brand);
  cursor: pointer;
  border: 3px solid var(--color-bg-container);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

.dm-slider::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-brand);
  cursor: pointer;
  border: 3px solid var(--color-bg-container);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

.dm-slider-ticks {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--color-text-light);
  margin-top: 4px;
}

.dm-approx-notice {
  margin-top: 12px;
  padding: 8px 14px;
  background: var(--color-success-pale-alt);
  border: 1px solid var(--color-success-pale-darker);
  border-radius: 6px;
  color: var(--color-success-darker);
  font-size: 0.9rem;
  font-weight: 600;
}

/* Formula card */
.dm-formula-card {
  background: var(--color-bg-container-alt);
  border: 1px solid var(--color-gray-300);
  border-radius: 10px;
  padding: 16px 20px;
  margin-bottom: 16px;
}

.dm-formula-title {
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
  font-size: 0.9rem;
}

.dm-formula-body {
  text-align: center;
  font-size: 1.2rem;
}

/* Educational notes */
.dm-edu-notes {
  background: var(--color-yellow-pale-lightest);
  border: 1px solid var(--color-warning-pale-darker);
  border-radius: 8px;
  padding: 14px 18px;
  font-size: 0.9rem;
  color: var(--color-yellow-dark);
  line-height: 1.6;
}

.dm-edu-notes:empty {
  display: none;
}

/* Animation overlay */
.dm-anim-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.dm-anim-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  max-width: 840px;
  margin-bottom: 10px;
}

.dm-anim-title {
  color: var(--color-bg-container);
  font-size: 1.1rem;
  font-weight: 600;
}

.dm-btn-close-anim {
  background: none;
  border: none;
  color: var(--color-bg-container);
  font-size: 1.8rem;
  cursor: pointer;
  padding: 0 4px;
  line-height: 1;
}

.dm-btn-close-anim:hover {
  color: var(--color-border);
}

.dm-anim-canvas-area {
  background: var(--color-bg-container);
  border-radius: 10px;
  overflow: hidden;
  width: 100%;
  max-width: 840px;
}

.dm-anim-canvas-area canvas {
  display: block;
  width: 100%;
}

.dm-anim-formula {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 8px;
  padding: 12px 20px;
  margin-top: 12px;
  text-align: center;
  font-size: 1.1rem;
  max-width: 840px;
  width: 100%;
}

.dm-anim-controls {
  display: flex;
  gap: 12px;
  margin-top: 12px;
}

.dm-btn-replay,
.dm-btn-step {
  padding: 10px 24px;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.dm-btn-replay {
  background: var(--color-brand);
  color: var(--color-bg-container);
}

.dm-btn-replay:hover {
  background: var(--color-brand-dark);
}

.dm-btn-step {
  background: var(--color-bg-container);
  color: var(--color-brand);
  border: 2px solid var(--color-brand);
}

.dm-btn-step:hover {
  background: var(--color-brand-pale);
}

/* ---- Distribution Map responsive ---- */
@media (max-width: 768px) {
  .dm-topbar {
    flex-direction: column;
    align-items: flex-start;
    padding: 12px 0 8px;
    gap: 10px;
  }

  .dm-grade-filter {
    width: 100%;
  }

  .dm-grade-select {
    flex: 1;
  }

  .dm-title {
    font-size: 1.1rem;
  }

  .dm-subtitle {
    font-size: 0.8rem;
  }

  .dm-legend-bar {
    flex-wrap: wrap;
    gap: 8px 16px;
    font-size: 0.78rem;
  }

  .dm-detail-panel {
    padding: 12px;
  }

  .dm-detail-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .dm-slider {
    height: 8px;
  }

  .dm-slider::-webkit-slider-thumb {
    width: 28px;
    height: 28px;
  }

  .dm-slider::-moz-range-thumb {
    width: 28px;
    height: 28px;
  }

  .dm-param-controls {
    flex-direction: column;
  }

  .dm-anim-overlay {
    padding: 10px;
  }

  .dm-anim-controls {
    flex-direction: column;
    width: 100%;
    max-width: 300px;
  }

  .dm-btn-replay,
  .dm-btn-step {
    width: 100%;
  }
}

/* ============================
   問題チェックボックス (qcheck)
   ============================ */
.qcheck-container {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin: 20px 0 8px;
}

.qcheck-label {
  display: inline-flex;
  align-items: center;
  cursor: pointer;
}

.qcheck-input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.qcheck-box {
  width: 28px;
  height: 28px;
  border: 2px solid var(--color-gray-500);
  border-radius: 5px;
  transition: background-color 0.15s, border-color 0.15s;
}

/* 黄色 */
.qcheck-yellow .qcheck-box {
  border-color: var(--color-yellow-light);
}
.qcheck-yellow .qcheck-input:checked + .qcheck-box {
  background-color: var(--color-warning-lighter);
  border-color: var(--color-yellow);
}

/* 緑 */
.qcheck-green .qcheck-box {
  border-color: var(--color-success-light);
}
.qcheck-green .qcheck-input:checked + .qcheck-box {
  background-color: var(--color-success-lighter);
  border-color: var(--color-success-medium);
}

/* 赤 */
.qcheck-red .qcheck-box {
  border-color: var(--color-error-light);
}
.qcheck-red .qcheck-input:checked + .qcheck-box {
  background-color: var(--color-error-lighter);
  border-color: var(--color-error-medium);
}

/* チェックマーク（常時表示） */
.qcheck-box::after {
  content: '';
  display: block;
  width: 8px;
  height: 14px;
  margin: 2px auto 0;
  border: solid var(--color-gray-500);
  border-width: 0 3px 3px 0;
  transform: rotate(45deg);
  transition: border-color 0.15s;
}

/* チェック時：白いチェックマーク */
.qcheck-input:checked + .qcheck-box::after {
  border-color: var(--color-bg-container);
}

/* ホバー */
.qcheck-label:hover .qcheck-box {
  box-shadow: 0 0 0 2px rgba(139, 108, 207, 0.25);
}

/* チェック問題タブ色分け */
.checks-tabs .account-tab[data-check-color="yellow"].active {
  background-color: var(--color-warning-lighter);
  color: var(--color-yellow-medium);
  border-color: var(--color-yellow);
}
.checks-tabs .account-tab[data-check-color="green"].active {
  background-color: var(--color-success-lighter);
  color: var(--color-success-darkest);
  border-color: var(--color-success-medium);
}
.checks-tabs .account-tab[data-check-color="red"].active {
  background-color: var(--color-error-lighter);
  color: var(--color-error-darkest);
  border-color: var(--color-error-medium);
}

/* アクションバー（復習・編集ボタン） */
.checks-actions {
  display: flex;
  gap: 8px;
  margin: 12px 0 8px;
}

.checks-action-btn {
  padding: 6px 18px;
  border: 1px solid var(--color-gray-500);
  border-radius: 6px;
  background: var(--color-bg-container);
  font-size: 0.9em;
  cursor: pointer;
  transition: background-color 0.15s, border-color 0.15s;
}

.checks-review-btn {
  background-color: var(--color-brand);
  color: var(--color-bg-container);
  border-color: var(--color-brand-dark);
}
.checks-review-btn:hover {
  background-color: var(--color-brand-dark);
}

.checks-edit-btn:hover {
  background-color: var(--color-gray-100);
}

/* 復習確認エリア */
.checks-review-confirm {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  margin-bottom: 10px;
  background: var(--color-brand-pale-alt);
  border: 1px solid var(--color-brand-border);
  border-radius: 8px;
}

.checks-review-count {
  font-weight: 600;
  font-size: 0.95em;
}

.checks-review-start-btn {
  padding: 6px 16px;
  background-color: var(--color-brand);
  color: var(--color-bg-container);
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9em;
}
.checks-review-start-btn:hover {
  background-color: var(--color-brand-dark);
}

.checks-review-cancel-btn {
  padding: 6px 16px;
  background: var(--color-bg-container);
  border: 1px solid var(--color-gray-500);
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9em;
}
.checks-review-cancel-btn:hover {
  background-color: var(--color-gray-100);
}

/* 編集モード：解除ボタン */
.checks-remove-btn {
  padding: 3px 12px;
  background: var(--color-bg-container);
  border: 1px solid var(--color-error-light);
  color: var(--color-error-medium);
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.85em;
}
.checks-remove-btn:hover {
  background-color: var(--color-error-pale-lighter);
}
.checks-remove-btn:disabled {
  border-color: var(--color-gray-500);
  color: var(--color-text-light);
  background: var(--color-gray-50);
  cursor: default;
}

/* 解除済み行 */
.checks-removed {
  opacity: 0.45;
}
.checks-removed a {
  pointer-events: none;
  color: var(--color-text-light);
}

/* チェック問題テーブル列幅固定 */
#checksList .history-table {
  table-layout: fixed;
}
#checksList .history-table th:nth-child(1),
#checksList .history-table td:nth-child(1) {
  width: 35%;
}
#checksList .history-table th:nth-child(2),
#checksList .history-table td:nth-child(2) {
  width: 40%;
}
#checksList .history-table th:nth-child(3),
#checksList .history-table td:nth-child(3) {
  width: 25%;
}
/* 編集モード時（4列）の幅配分 */
#checksList .history-table th:nth-child(4),
#checksList .history-table td:nth-child(4) {
  width: 70px;
}
#checksList .history-table:has(th:nth-child(4)) th:nth-child(1),
#checksList .history-table:has(th:nth-child(4)) td:nth-child(1) {
  width: 30%;
}
#checksList .history-table:has(th:nth-child(4)) th:nth-child(2),
#checksList .history-table:has(th:nth-child(4)) td:nth-child(2) {
  width: 35%;
}
#checksList .history-table:has(th:nth-child(4)) th:nth-child(3),
#checksList .history-table:has(th:nth-child(4)) td:nth-child(3) {
  width: 20%;
}
#checksList .history-table td {
  overflow: hidden;
  text-overflow: ellipsis;
}