/**
 * 議員向けAI機能 紹介ページ (issues基本テイスト)
 */

/* デザインシステム - トークン定義 (seijika.html準拠) */
:root {
  --color-bg-light: #ffffff;
  --color-bg-alt: #ECF8F5; /* issuesライトグリーン */
  --color-card-light: #ffffff;
  --color-primary: #41bc9f; /* issuesメイングリーン */
  --color-primary-dark: #2a8b73; /* 視認性を確保したテキスト用ダークグリーン */
  --color-secondary: #FF8B00; /* issues CTAオレンジ */
  --color-accent: #FFFA94; /* マーカーイエロー */
  --color-text-main: #333333;
  --color-text-muted: #787c77;
  --color-border: #E8E8E8;
  --color-border-hover: #cccccc;
  
  --font-family: "Outfit", "Noto Sans JP", "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
  --shadow-premium: 0 2px 8px rgba(0, 0, 0, 0.05);
}

/* リセット & ベース */
.ai-assistant-page {
  font-family: var(--font-family);
  background-color: var(--color-bg-light);
  color: var(--color-text-main);
  line-height: 1.6;
  overflow-x: hidden;
}

.ai-assistant-page h1, 
.ai-assistant-page h2, 
.ai-assistant-page h3, 
.ai-assistant-page h4 {
  font-weight: bold;
  color: var(--color-text-main);
}

/* ヘッダー/ナビゲーション */
.ai-assistant-page .navbar-custom {
  background-color: #ffffff;
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 0 10px rgba(0,0,0, .1);
}

.navbar-logo {
  max-height: 40px;
}

/* ヒーローセクション */
.hero-section {
  position: relative;
  padding: 120px 0 80px 0;
  background-color: var(--color-bg-alt);
}

/* プライマリーカラーのテキスト（旧グラデーション） */
.text-gradient {
  color: var(--color-primary);
}

.hero-subtitle {
  color: var(--color-text-main);
  font-size: 1rem;
  max-width: 600px;
  margin-top: 1.5rem;
  line-height: 1.8;
}

.hero-heading {
  line-height: 1.25;
}

.hero-cta-group {
  gap: 12px;
}

/* プレミアムボタン (CTAオレンジ) */
.btn-premium {
  background-color: var(--color-secondary);
  color: #ffffff !important;
  font-weight: bold;
  padding: 14px 32px;
  border-radius: 8px;
  border: none;
  transition: all 0.3s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none !important;
  font-size: 1.125rem;
}

.btn-premium:hover {
  background-color: #faa236;
}

.btn-premium--sm {
  padding: 8px 20px;
  font-size: 0.9rem;
}

.btn-premium--lg {
  font-size: 1.1rem;
  padding: 16px 40px;
}

/* アウトラインボタン (issuesグリーン) */
.btn-premium-outline {
  background: #ffffff;
  color: var(--color-primary) !important;
  border: 1px solid var(--color-primary);
  padding: 14px 32px;
  border-radius: 8px;
  font-weight: bold;
  transition: all 0.3s;
  text-decoration: none !important;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-premium-outline:hover {
  background: var(--color-primary);
  color: #ffffff !important;
}


.source-city-tag {
  color: var(--color-primary-dark);
  font-weight: bold;
  font-size: 0.9rem;
  letter-spacing: 0.03em;
  margin-bottom: 4px;
}

/* 課題セクション */
.section-premium {
  padding: 80px 0;
  position: relative;
  background-color: var(--color-bg-light);
}

.section-title {
  text-align: center;
  font-size: 1.625rem;
  margin-bottom: 50px;
  color: var(--color-text-main);
  font-weight: bold;
}

.card-premium {
  background: var(--color-card-light);
  border: 1px solid var(--color-primary);
  border-radius: 8px;
  padding: 32px;
  height: 100%;
  transition: all 0.3s;
  position: relative;
  box-shadow: var(--shadow-premium);
}

.card-premium:hover {
  transform: translateY(-2px);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 16px;
  text-align: center;
}
  
.card-premium h3 {
  text-align: center;
  font-size: 1.125rem;
  margin-bottom: 16px;
}
  
.card-description {
  font-size: 0.9rem;
}
  
.card-solution {
  font-size: 0.9rem;
  color: var(--color-primary-dark);
}
  
.card-solution--secondary {
  color: var(--color-secondary);
}

/* 機能詳細グリッド */
.feature-row {
  display: flex;
  align-items: center;
  gap: 40px;
  margin-bottom: 60px;
}

.feature-row:nth-child(even) {
  flex-direction: row-reverse;
}

.feature-img-box {
  flex: 1;
  background: var(--color-bg-alt);
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 40px;
  border-radius: 8px;
  min-height: 300px;
}

.feature-info {
  flex: 1;
}

.feature-badge {
  background-color: var(--color-primary);
  color: #ffffff;
  padding: 6px 16px;
  border-radius: 30px;
  font-weight: bold;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
  display: inline-block;
}

/* 特徴セクション内のデモカード */
.feature-demo-card {
  background: #ffffff;
  border: 1px solid rgba(65, 188, 159, 0.15);
  border-radius: 16px;
  width: 100%;
  max-width: 420px;
  padding: 2rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0, 0, 0, 0.02);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-demo-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 15px 35px rgba(65, 188, 159, 0.08);
}

.feature-demo-title {
  font-size: 1.15rem;
  line-height: 1.4;
  margin-bottom: 8px;
}

.feature-demo-excerpt {
  font-size: 0.95rem;
  border-top: 1px dashed rgba(0, 0, 0, 0.15);
  padding-top: 12px;
  line-height: 1.7;
}

/* 特徴02: タグ絞り込み */
.feature-tags-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
  max-width: 340px;
}

.feature-tag {
  display: inline-flex;
  align-items: center;
  background: #ffffff;
  border: 1px solid rgba(65, 188, 159, 0.25);
  color: var(--color-text-main);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 16px 24px;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02);
  transition: all 0.3s ease;
}

.feature-tag:hover {
  transform: translateX(4px);
  background: rgba(65, 188, 159, 0.03);
  border-color: var(--color-primary);
  box-shadow: 0 6px 15px rgba(65, 188, 159, 0.08);
}

.feature-tag-icon {
  margin-right: 10px;
  font-size: 1.2rem;
}

/* 特徴03: 検索キーワード・並べ替え */
.feature-search-demo {
  font-size: 0.95rem;
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 16px;
  padding: 2.5rem;
  width: 100%;
  max-width: 440px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
}

.demo-section {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.demo-section-header {
  display: flex;
  align-items: center;
  gap: 8px;
}

.demo-icon {
  font-size: 1.25rem;
}

.demo-section-title {
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-text-main);
}

.demo-query-flow {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  background: #f8f9fa;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid rgba(0, 0, 0, 0.03);
}

.query-chip {
  display: inline-flex;
  align-items: center;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 20px;
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.08);
  color: var(--color-text-muted);
}

.query-chip--main {
  background: rgba(65, 188, 159, 0.1);
  border-color: rgba(65, 188, 159, 0.3);
  color: var(--color-primary);
  font-weight: 700;
}

.query-arrow {
  color: var(--color-primary);
  font-weight: bold;
}

.query-related-chips {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.demo-results-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.demo-result-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: #f8f9fa;
  border-radius: 10px;
  border: 1px solid rgba(0, 0, 0, 0.02);
  transition: all 0.25s ease;
}

.demo-result-item:hover {
  background: rgba(65, 188, 159, 0.02);
  border-color: rgba(65, 188, 159, 0.15);
}

.result-rank {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #ffffff;
  font-size: 0.8rem;
  font-weight: 700;
  font-family: 'Outfit', sans-serif;
}

.result-text {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-main);
  flex: 1;
}

.result-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: 4px;
}

.badge-high {
  background: rgba(65, 188, 159, 0.15);
  color: var(--color-primary);
}

.badge-medium {
  background: rgba(120, 124, 119, 0.1);
  color: var(--color-text-muted);
}

/* CTAセクション */
.cta-section {
  background: var(--color-bg-alt);
  padding: 80px 0;
  text-align: center;
}

.cta-box {
  background: #ffffff;
  border: 1px solid var(--color-primary);
  padding: 50px 30px;
  border-radius: 8px;
  max-width: 800px;
  margin: 0 auto;
  box-shadow: var(--shadow-premium);
}

.cta-description {
  max-width: 600px;
  margin: 0 auto 30px auto;
}

/* キーフレーム・アニメーション */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes blink {
  50% { opacity: 0; }
}

/* スクロールアニメーション */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* FAQ セクション */
.faq-section {
  padding: 80px 0;
  background-color: var(--color-bg-light);
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: box-shadow 0.3s ease;
}

.faq-item:hover {
  box-shadow: var(--shadow-premium);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 20px 24px;
  background: none;
  border: none;
  font-size: 1rem;
  font-weight: bold;
  color: var(--color-text-main);
  cursor: pointer;
  text-align: left;
  transition: background-color 0.25s ease;
}

.faq-question:hover {
  background-color: rgba(65, 188, 159, 0.04);
}

.faq-question::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--color-primary);
  transition: transform 0.3s ease;
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-question[aria-expanded="true"]::after {
  content: '−';
}

.faq-item .collapse {
  display: block;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-item .collapse.show {
  max-height: 500px;
}

.faq-answer {
  padding: 20px 24px;
  color: var(--color-text-muted);
  font-size: 0.92rem;
  line-height: 1.8;
}

/* フッター */
.footer-premium {
  background-color: #f8f9fa;
  border-top: 1px solid var(--color-border);
  padding: 60px 0 20px 0;
  color: var(--color-text-main);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.footer-logo {
  max-width: 120px;
  margin-bottom: 8px;
}

.footer-tagline {
  color: var(--color-text-muted);
  font-size: 0.8rem;
  margin: 0;
  line-height: 1.6;
}

.footer-heading {
  font-size: 0.85rem;
  font-weight: bold;
  color: var(--color-text-main);
  margin-bottom: 16px;
  letter-spacing: 0.03em;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: #666;
  font-size: 0.82rem;
  text-decoration: none;
  transition: color 0.25s ease;
}

.footer-links a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.footer-copyright {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.footer-copyright p {
  color: var(--color-text-muted);
  font-size: 0.78rem;
  margin: 0;
}

/* レスポンシブ対応の調整 */
@media (max-width: 991px) {
  .hero-section {
    padding-top: 140px;
    padding-bottom: 80px;
  }
  .feature-row {
    flex-direction: column !important;
    gap: 30px;
    margin-bottom: 60px;
  }
  .footer-brand {
    align-items: center;
    text-align: center;
    margin-bottom: 16px;
  }
  .navbar-nav .btn-premium--sm {
    margin: 12px 0;
  }
}

@media (max-width: 767px) {
  .footer-premium {
    text-align: center;
  }
  .footer-brand {
    align-items: center;
  }
  .footer-heading {
    margin-top: 8px;
  }
  .hero-heading {
    font-size: 1.75rem;
  }
  .feature-img-box {
    min-height: auto;
    padding: 24px;
  }
  .feature-demo-card {
    padding: 1.25rem;
  }
  .feature-search-demo {
    padding: 1.25rem;
  }
  .feature-tags-container {
    max-width: 100%;
  }
  .cta-box {
    padding: 32px 16px;
  }
  .cta-box .display-5 {
    font-size: 1.5rem;
  }
  .result-badge {
    white-space: nowrap;
    font-size: 0.65rem;
  }
}

/* RAGログインリンク用 */
.rag-link-hero {
  text-decoration: underline !important;
  font-size: 0.9rem;
  color: var(--color-text-muted) !important;
  transition: color 0.3s ease;
}

.rag-link-hero:hover {
  color: var(--color-primary) !important;
}

.rag-link-cta {
  text-decoration: underline !important;
  font-size: 0.95rem;
}

/* ヘッダーナビゲーション用 ログインリンク */
.nav-link--login {
  position: relative;
  font-weight: 700;
  transition: color 0.3s ease;
  color: var(--color-text-main) !important;
}

.nav-link--login::after {
  content: '';
  position: absolute;
  width: 100%;
  transform: scaleX(0);
  height: 2px;
  bottom: -2px;
  left: 0;
  background-color: var(--color-primary);
  transform-origin: bottom right;
  transition: transform 0.25s ease-out;
}

.nav-link--login:hover {
  color: var(--color-primary) !important;
}

.nav-link--login:hover::after {
  transform: scaleX(1);
  transform-origin: bottom left;
}

/* モバイル表示（崩れ防止）の調整 */
@media (max-width: 991px) {
  .nav-link--login {
    margin: 10px 0;
    display: inline-block;
  }
}

/* キーボード操作用のフォーカスインジケータ（アクセシビリティ向上） */
.ai-assistant-page :focus-visible {
  outline: 3px solid var(--color-primary-dark) !important;
  outline-offset: 3px !important;
}

.ai-assistant-page .btn-premium:focus-visible,
.ai-assistant-page .btn-premium-outline:focus-visible,
.ai-assistant-page .faq-question:focus-visible,
.ai-assistant-page .navbar-toggler:focus-visible {
  outline: 3px solid var(--color-primary-dark) !important;
  outline-offset: 3px !important;
  box-shadow: none !important;
}

/* ==========================================================================
   試用版リリース プレミアムデザイン (Glassmorphism & Glow)
   ========================================================================== */

/* ヒーローセクション用 Glassmorphic 試用版バッジ */
.feature-badge--beta {
  background: rgba(255, 255, 255, 0.45) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.6) !important;
  color: var(--color-primary-dark) !important;
  box-shadow: 0 4px 12px rgba(65, 188, 159, 0.15) !important;
  margin-left: 8px;
  vertical-align: middle;
  transition: all 0.3s ease;
}

.feature-badge--beta:hover {
  background: rgba(255, 255, 255, 0.65) !important;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(65, 188, 159, 0.25) !important;
}

/* ヒーローセクション用 サブタイトル補足文 */
.hero-beta-note {
  display: inline-block;
  font-size: 0.85rem;
  color: var(--color-primary-dark);
  background: rgba(65, 188, 159, 0.06);
  border-left: 3px solid var(--color-primary);
  padding: 6px 12px;
  margin-top: 8px;
  border-radius: 0 8px 8px 0;
  font-weight: 500;
}

/* CTAボックス内 輝くグラデーションベータバッジ */
.beta-badge-glow {
  display: inline-block;
  background: linear-gradient(135deg, var(--color-primary) 0%, #2bd9a8 100%);
  color: #ffffff;
  padding: 6px 18px;
  border-radius: 30px;
  font-weight: 800;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  box-shadow: 0 4px 15px rgba(65, 188, 159, 0.4);
  position: relative;
  overflow: hidden;
  animation: pulse-glow 2s infinite ease-in-out;
}

@keyframes pulse-glow {
  0% {
    box-shadow: 0 4px 15px rgba(65, 188, 159, 0.4);
    transform: scale(1);
  }
  50% {
    box-shadow: 0 6px 20px rgba(65, 188, 159, 0.7);
    transform: scale(1.03);
  }
  100% {
    box-shadow: 0 4px 15px rgba(65, 188, 159, 0.4);
    transform: scale(1);
  }
}

/* CTAボックス内 Glassmorphism プレミアムお知らせカード */
.beta-glass-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(65, 188, 159, 0.25);
  border-radius: 16px;
  padding: 20px 24px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03), inset 0 1px 0 rgba(255, 255, 255, 0.6);
  max-width: 680px;
  margin: 24px auto;
  transition: all 0.3s ease;
}

.beta-glass-card:hover {
  transform: translateY(-2px);
  border-color: rgba(65, 188, 159, 0.4);
  box-shadow: 0 12px 35px rgba(65, 188, 159, 0.12);
}

/* ガラスカード内 アイコンスタイル */
.beta-glass-icon {
  font-size: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, rgba(65, 188, 159, 0.1) 0%, rgba(65, 188, 159, 0.2) 100%);
  border: 1px solid rgba(65, 188, 159, 0.3);
  border-radius: 12px;
  flex-shrink: 0;
  box-shadow: 0 4px 10px rgba(65, 188, 159, 0.1);
  animation: float-icon 3s ease-in-out infinite;
}

@keyframes float-icon {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-4px); }
  100% { transform: translateY(0px); }
}