:root {
  --primary-color: #0b8457;       /* 岐阜の清流・山々の深緑 */
  --primary-light: #e8f5e9;
  --secondary-color: #0288d1;     /* 長良川の清流ブルー */
  --secondary-light: #e1f5fe;
  --accent-color: #e65100;        /* かがり火・鵜飼のオレンジ */
  --accent-light: #fff3e0;
  --yes-color: #2e7d32;
  --no-color: #c62828;
  --bg-gradient: linear-gradient(135deg, #f0f7f4 0%, #e0f2f1 100%);
  --surface-color: #ffffff;
  --text-main: #263238;
  --text-muted: #607d8b;
  --border-color: #cfd8dc;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
}

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

body {
  font-family: 'Zen Maru Gothic', 'Hiragino Sans', 'Meiryo', sans-serif;
  background: var(--bg-gradient);
  color: var(--text-main);
  min-height: 100vh;
  padding: 12px 12px 40px;
  display: flex;
  justify-content: center;
}

.app-container {
  width: 100%;
  max-width: 640px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ヘッダー */
.app-header {
  background: var(--surface-color);
  padding: 14px 18px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 3px solid var(--primary-color);
}

.logo-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  background: var(--primary-light);
  color: var(--primary-color);
  padding: 2px 8px;
  border-radius: 999px;
  margin-bottom: 2px;
}

.logo-title {
  font-size: 1.45rem;
  font-weight: 900;
  color: var(--primary-color);
  letter-spacing: 0.5px;
}

.logo-title span {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 700;
  margin-left: 4px;
}

.header-stats {
  display: flex;
  gap: 10px;
}

.stat-badge {
  background: var(--secondary-light);
  border: 1px solid var(--secondary-color);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 65px;
}

.stat-label {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--secondary-color);
}

.stat-value {
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--secondary-color);
  line-height: 1.1;
}

/* マスコットカード */
.mascot-card {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--surface-color);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.mascot-avatar {
  width: 54px;
  height: 54px;
  min-width: 54px;
  min-height: 54px;
  max-width: 54px;
  max-height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  flex-shrink: 0;
  border: 2.5px solid var(--primary-color);
  background: #ffffff;
  overflow: hidden;
  box-shadow: 0 2px 6px rgba(11, 132, 87, 0.2);
}

.mascot-avatar img,
.mascot-avatar-img {
  width: 100% !important;
  height: 100% !important;
  max-width: 54px !important;
  max-height: 54px !important;
  object-fit: cover !important;
  border-radius: 50% !important;
  display: block !important;
}

.speech-bubble {
  background: #f5fbf7;
  border: 1px solid #c8e6c9;
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  position: relative;
  flex: 1;
}

.speech-bubble p {
  font-size: 0.88rem;
  font-weight: 700;
  line-height: 1.4;
  color: #1b5e20;
}

/* セクション共通 */
.section-card {
  background: var(--surface-color);
  border-radius: var(--radius-md);
  padding: 16px;
  box-shadow: var(--shadow-sm);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.section-title {
  font-size: 1rem;
  font-weight: 900;
  color: var(--text-main);
}

.btn-refresh {
  background: #eceff1;
  border: none;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-muted);
  padding: 4px 10px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-refresh:hover {
  background: #cfd8dc;
  color: var(--text-main);
}

/* 質問選択グリッド */
.questions-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.question-btn {
  background: #ffffff;
  border: 2px solid #b2dfdb;
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  text-align: left;
  font-family: inherit;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all 0.2s ease;
  box-shadow: 0 1px 3px rgba(0,0,0,0.03);
}

.question-btn:hover {
  border-color: var(--primary-color);
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

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

.question-btn-text {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  flex: 1;
}

.question-category-tag {
  font-size: 0.7rem;
  background: #e0f2f1;
  color: #00695c;
  padding: 3px 8px;
  border-radius: 6px;
  font-weight: 700;
  margin-left: 8px;
  flex-shrink: 0;
}

/* 質問履歴 */
.history-section {
  max-height: 260px;
  display: flex;
  flex-direction: column;
}

.history-list {
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-right: 4px;
}

.empty-history {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-align: center;
  padding: 16px 0;
}

.history-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: #fafafa;
  border-radius: var(--radius-sm);
  border-left: 4px solid #b0bec5;
  font-size: 0.88rem;
  animation: fadeIn 0.3s ease;
}

.history-item.ans-yes {
  border-left-color: var(--yes-color);
  background: #f1f8e9;
}

.history-item.ans-no {
  border-left-color: var(--no-color);
  background: #ffebee;
}

.history-text {
  font-weight: 700;
  color: var(--text-main);
  flex: 1;
}

.history-badge {
  font-size: 0.78rem;
  font-weight: 900;
  padding: 3px 10px;
  border-radius: 999px;
  margin-left: 10px;
  flex-shrink: 0;
}

.history-badge.yes {
  background: var(--yes-color);
  color: white;
}

.history-badge.no {
  background: var(--no-color);
  color: white;
}

/* 解答エリア */
.mode-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.tab-btn {
  flex: 1;
  padding: 10px;
  border: 1px solid var(--border-color);
  background: #f5f5f5;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
}

.tab-btn.active {
  background: var(--primary-color);
  color: #ffffff;
  border-color: var(--primary-color);
  box-shadow: 0 2px 6px rgba(11, 132, 87, 0.25);
}

.filter-chips {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 8px;
  margin-bottom: 10px;
}

.chip {
  background: #f1f1f1;
  border: none;
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-family: inherit;
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  white-space: nowrap;
}

.chip.active {
  background: var(--secondary-color);
  color: white;
}

.candidate-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 8px;
  max-height: 220px;
  overflow-y: auto;
  padding: 4px;
}

.candidate-btn {
  background: #ffffff;
  border: 1.5px solid #b0bec5;
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
  box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}

.candidate-btn:hover {
  border-color: var(--secondary-color);
  background: var(--secondary-light);
  transform: scale(1.02);
}

.candidate-btn.disabled-wrong,
.candidate-btn:disabled {
  background: #f1f3f4;
  border-color: #e0e0e0;
  color: #9e9e9e;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none;
  opacity: 0.7;
}

.candidate-btn.disabled-wrong:hover {
  background: #f1f3f4;
  border-color: #e0e0e0;
}

.candidate-btn .cross-icon {
  color: #e53935;
  font-weight: 900;
  margin-right: 2px;
}

/* 直接入力フォーム */
.direct-form {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
}

.direct-form input {
  flex: 1;
  padding: 12px 14px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 700;
  outline: none;
}

.direct-form input:focus {
  border-color: var(--primary-color);
}

.btn-submit-answer {
  background: var(--accent-color);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0 18px;
  font-family: inherit;
  font-weight: 900;
  font-size: 0.95rem;
  cursor: pointer;
  transition: opacity 0.2s;
}

.btn-submit-answer:hover {
  opacity: 0.9;
}

.form-hint {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.wrong-feedback {
  margin-top: 10px;
  padding: 10px 14px;
  background: #ffebee;
  border: 1px solid #ef5350;
  border-radius: var(--radius-sm);
  color: #c62828;
  font-size: 0.88rem;
  font-weight: 700;
  text-align: center;
  animation: shake 0.4s ease;
}

/* モーダル */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 1000;
}

.modal-card {
  background: var(--surface-color);
  width: 100%;
  max-width: 480px;
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
  box-shadow: var(--shadow-lg);
  animation: popIn 0.3s cubic-bezier(0.18, 0.89, 0.32, 1.28);
}

.modal-icon {
  font-size: 3.5rem;
  line-height: 1;
  margin-bottom: 8px;
}

.modal-title {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--text-main);
  margin-bottom: 4px;
}

.modal-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 700;
  margin-bottom: 14px;
}

.answer-reveal-card {
  background: #f1f8e9;
  border: 2px solid #a5d6a7;
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 16px;
  text-align: left;
}

.target-name {
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--primary-color);
  margin-bottom: 4px;
}

.target-meta {
  display: inline-block;
  font-size: 0.75rem;
  background: #c8e6c9;
  color: #1b5e20;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 8px;
}

.target-desc {
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--text-main);
}

.result-stats-card {
  background: #fafafa;
  border-radius: var(--radius-sm);
  padding: 12px;
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.stat-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
}

.rank-highlight {
  color: var(--accent-color);
  font-size: 1.1rem;
}

.modal-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.btn-primary {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 12px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 900;
  cursor: pointer;
  transition: opacity 0.2s;
}

.btn-share {
  background: #000000;
  color: white;
  border: none;
  padding: 12px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 900;
  cursor: pointer;
  transition: opacity 0.2s;
}

.btn-primary:hover, .btn-share:hover {
  opacity: 0.85;
}

/* ユーティリティ */
.hidden {
  display: none !important;
}

/* アニメーション */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

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

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

/* スプラッシュ画面（アイキャッチ） */
.splash-screen {
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at center, #ffffff 0%, #e0f2f1 100%);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  opacity: 1;
  visibility: visible;
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
              visibility 0.8s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.splash-screen.fade-out {
  opacity: 0;
  visibility: hidden;
  transform: scale(1.04);
  pointer-events: none;
}

.splash-content {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 520px;
  width: 100%;
}

.splash-image {
  width: 100%;
  height: auto;
  max-height: 82vh;
  object-fit: contain;
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.18), 0 4px 12px rgba(11, 132, 87, 0.12);
  animation: splashPop 0.6s cubic-bezier(0.18, 0.89, 0.32, 1.28);
}

.btn-skip-splash {
  position: absolute;
  top: 14px;
  right: 14px;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(4px);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: 6px 14px;
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.btn-skip-splash:hover {
  background: rgba(0, 0, 0, 0.8);
  transform: scale(1.05);
}

@keyframes splashPop {
  from {
    opacity: 0;
    transform: scale(0.92);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}