/* TRAVIAH Official Web Stylesheet */
:root {
  --color-bg: #0b1329;
  --color-bg-card: #111e3f;
  --color-bg-card-hover: #182852;
  --color-accent: #38bdf8;
  --color-accent-soft: rgba(56, 189, 248, 0.12);
  --color-accent-gold: #f5c247;
  --color-text-main: #f1f5f9;
  --color-text-sub: #94a3b8;
  --color-text-muted: #64748b;
  --color-border: #1e293b;
  --color-border-focus: #38bdf8;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --max-w: 1080px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--color-bg);
  color: var(--color-text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

/* 共通コンテナ */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 20px;
}

/* ヘッダー */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background-color: rgba(11, 19, 41, 0.85);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: block;
}

.brand-title {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: #ffffff;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  list-style: none;
}

.nav-link {
  font-size: 14px;
  color: var(--color-text-sub);
  transition: color 0.2s;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
}

.nav-link:hover {
  color: #ffffff;
}

.nav-link.active {
  color: var(--color-accent);
  background-color: var(--color-accent-soft);
  font-weight: 600;
}

/* メインコンテンツ領域 */
.main-content {
  flex: 1;
}

/* Hero セクション */
.hero-section {
  padding: 80px 0 60px;
  text-align: center;
  background: radial-gradient(circle at 50% 20%, rgba(56, 189, 248, 0.15) 0%, transparent 60%);
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 999px;
  background-color: var(--color-accent-soft);
  color: var(--color-accent);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 24px;
  border: 1px solid rgba(56, 189, 248, 0.25);
}

.hero-title {
  font-size: 44px;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 20px;
  color: #ffffff;
}

.hero-catchphrase {
  font-size: 20px;
  font-weight: 500;
  color: var(--color-text-sub);
  margin-bottom: 28px;
}

.hero-description {
  max-width: 640px;
  margin: 0 auto 36px;
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* セクション基本 */
.section-wrapper {
  padding: 60px 0;
}

.section-wrapper.bordered {
  border-top: 1px solid var(--color-border);
}

.section-title-wrap {
  text-align: center;
  margin-bottom: 44px;
}

.section-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.section-title {
  font-size: 28px;
  font-weight: 700;
  color: #ffffff;
}

/* 特徴グリッド */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 20px;
}

.feature-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: transform 0.2s, border-color 0.2s;
}

.feature-card:hover {
  transform: translateY(-2px);
  border-color: rgba(56, 189, 248, 0.3);
}

.feature-icon-badge {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background-color: var(--color-accent-soft);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 18px;
}

.feature-card-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  color: #ffffff;
}

.feature-card-desc {
  font-size: 14px;
  color: var(--color-text-sub);
  line-height: 1.7;
}

/* アプリプレビュー（スクリーンショット配置スペース） */
.app-preview-placeholder {
  max-width: 720px;
  margin: 0 auto;
  border: 2px dashed var(--color-border);
  background-color: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: 50px 24px;
  text-align: center;
}

.app-preview-placeholder p {
  color: var(--color-text-sub);
  font-size: 14px;
}

.app-preview-subtext {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 8px;
}

/* ストアリンクボタン */
.store-badges-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  margin-top: 24px;
}

.store-badge-placeholder {
  display: flex;
  align-items: center;
  gap: 12px;
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 12px 20px;
  font-size: 13px;
  color: var(--color-text-sub);
}

.store-badge-placeholder span {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: #ffffff;
}

/* 文書ページ（利用規約・プライバシーポリシー・お問い合わせ） */
.doc-page-header {
  padding: 50px 0 30px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 36px;
}

.doc-title {
  font-size: 30px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 12px;
}

.doc-meta {
  font-size: 13px;
  color: var(--color-text-muted);
}

.doc-content-body {
  max-width: 800px;
  padding-bottom: 60px;
}

.doc-notice-card {
  background-color: var(--color-bg-card);
  border-left: 4px solid var(--color-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 20px 24px;
  margin-bottom: 36px;
}

.doc-notice-title {
  font-size: 15px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 6px;
}

.doc-notice-text {
  font-size: 13px;
  color: var(--color-text-sub);
  line-height: 1.6;
}

.doc-section {
  margin-bottom: 32px;
}

.doc-section-title {
  font-size: 18px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.doc-placeholder-box {
  background-color: rgba(17, 30, 63, 0.5);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-sm);
  padding: 24px;
  color: var(--color-text-muted);
  font-size: 14px;
  line-height: 1.7;
}

/* お問い合わせ */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  padding-bottom: 60px;
}

.contact-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 30px 24px;
}

.contact-card-title {
  font-size: 18px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 10px;
}

.contact-card-desc {
  font-size: 14px;
  color: var(--color-text-sub);
  line-height: 1.7;
  margin-bottom: 18px;
}

/* フッター */
.site-footer {
  border-top: 1px solid var(--color-border);
  background-color: #070c1a;
  padding: 44px 0;
  margin-top: auto;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  text-align: center;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
  list-style: none;
}

.footer-nav-link {
  font-size: 13px;
  color: var(--color-text-sub);
  transition: color 0.2s;
}

.footer-nav-link:hover {
  color: #ffffff;
}

.footer-copy {
  font-size: 12px;
  color: var(--color-text-muted);
}

/* レスポンシブ対応 */
@media (max-width: 640px) {
  .hero-title {
    font-size: 30px;
  }
  .hero-catchphrase {
    font-size: 16px;
  }
  .section-title {
    font-size: 22px;
  }
  .nav-links {
    gap: 8px;
  }
  .nav-link {
    font-size: 13px;
    padding: 6px 8px;
  }
}