/* ================================================================
   japan-data.net ハブページ スタイル
   accident_map / income_map と同じ navy + cyan 基盤
   ================================================================ */

:root {
  --bg-primary: #1a1a2e;
  --bg-secondary: #16213e;
  --bg-tertiary: #0f3460;
  --bg-card-hover: #1a3a5c;

  --text-primary: #eee;
  --text-secondary: #bbb;
  --text-muted: #999;
  --text-on-dark: #ccc;

  --accent-cyan: #7ec8e3;
  --accent-red: #e94560;
  --accent-green: #27ae60;
  --accent-amber: #f39c12;
  --accent-blue: #3498db;
  --accent-purple: #9b59b6;
  --accent-gold: #c8a458;

  --border-color: #0f3460;
  --border-soft: rgba(126, 200, 227, 0.15);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);

  --font-sans: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, "Hiragino Sans", sans-serif;
  --font-mono: 'Fira Code', monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
}

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

html {
  scroll-behavior: smooth;
}

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

a {
  color: var(--accent-cyan);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

:focus-visible {
  outline: 3px solid var(--accent-cyan);
  outline-offset: 2px;
}
:focus:not(:focus-visible) { outline: none; }

/* ---- スキップリンク ---- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  background: var(--accent-cyan);
  color: #111;
  padding: 8px 16px;
  border-radius: 0 0 6px 6px;
  font-size: 0.85rem;
  font-weight: 600;
  z-index: 10000;
  text-decoration: none;
}
.skip-link:focus { top: 0; }

/* ---- ヘッダー ---- */
header.site-header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
}
.site-logo {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.5px;
}
.site-logo .logo-icon {
  width: 22px;
  height: 22px;
}
.site-tagline {
  font-size: 0.78rem;
  color: var(--text-secondary);
  letter-spacing: 0.3px;
}
.site-nav {
  margin-left: auto;
  display: flex;
  gap: 6px;
}
.site-nav a {
  padding: 8px 14px;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-on-dark);
  border-radius: var(--radius-sm);
  transition: background 0.15s, color 0.15s;
  text-decoration: none;
}
.site-nav a:hover, .site-nav a:focus-visible {
  background: var(--bg-tertiary);
  color: var(--accent-cyan);
  text-decoration: none;
}

/* ---- ヒーロー ---- */
.hero {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
  padding: 56px 20px 48px;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}
.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 900;
  color: var(--text-primary);
  margin-bottom: 14px;
  letter-spacing: 1px;
  line-height: 1.3;
}
.hero h1 .accent { color: var(--accent-cyan); }
.hero p.lead {
  font-size: clamp(0.92rem, 2vw, 1.05rem);
  color: var(--text-on-dark);
  max-width: 640px;
  margin: 0 auto 28px;
  line-height: 1.8;
}
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-md);
  padding: 18px 28px;
  max-width: 560px;
  margin: 0 auto;
}
.hero-stat {
  text-align: center;
}
.hero-stat .num {
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--accent-cyan);
  display: block;
  font-family: var(--font-mono);
}
.hero-stat .label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
}

/* ---- AdSense枠 ---- */
.ad-banner {
  max-width: 1200px;
  margin: 24px auto;
  padding: 0 20px;
}
.ad-banner-inner {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 1px;
}

/* ---- アプリ一覧 ---- */
section.apps {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 20px 48px;
}
.section-title {
  font-size: 1.05rem;
  color: var(--accent-cyan);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
  letter-spacing: 0.5px;
  font-weight: 700;
}
.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

/* ---- アプリカード ---- */
.app-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s, background 0.15s;
  position: relative;
}
.app-card:hover, .app-card:focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-cyan);
  background: var(--bg-card-hover);
  text-decoration: none;
}

.app-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  background: var(--bg-tertiary);
}
.app-card-icon svg {
  width: 24px;
  height: 24px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* テーマ別の icon カラー */
.theme-red    { color: var(--accent-red); }
.theme-amber  { color: var(--accent-amber); }
.theme-blue   { color: var(--accent-blue); }
.theme-cyan   { color: var(--accent-cyan); }
.theme-gold   { color: var(--accent-gold); }
.theme-purple { color: var(--accent-purple); }

.app-card-title {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.app-card-desc {
  font-size: 0.85rem;
  color: var(--text-on-dark);
  line-height: 1.7;
  margin-bottom: 14px;
  flex-grow: 1;
}

.app-card-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.72rem;
  color: var(--text-secondary);
  margin-bottom: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border-soft);
}
.app-card-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}
.app-card-meta-item svg {
  width: 12px;
  height: 12px;
  flex-shrink: 0;
}

.app-card-cta {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent-cyan);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.app-card-cta svg {
  width: 14px;
  height: 14px;
  transition: transform 0.15s;
}
.app-card:hover .app-card-cta svg {
  transform: translateX(3px);
}

/* ---- About 系セクション ---- */
.about-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 20px 48px;
}
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}
.about-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
}
.about-card h3 {
  font-size: 0.95rem;
  color: var(--accent-cyan);
  margin-bottom: 10px;
  font-weight: 600;
}
.about-card p {
  font-size: 0.82rem;
  color: var(--text-on-dark);
  line-height: 1.8;
}

/* ---- フッター ---- */
footer.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 28px 20px;
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.9;
}
footer.site-footer a {
  color: var(--accent-cyan);
}

/* ---- prefers-reduced-motion ---- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---- モバイル ---- */
@media (max-width: 600px) {
  .hero { padding: 40px 16px 32px; }
  .hero-stats { padding: 14px 16px; gap: 16px; }
  .hero-stat .num { font-size: 1.4rem; }
  .site-tagline { display: none; }
  .site-nav a { padding: 8px 10px; font-size: 0.78rem; }
  .app-grid { grid-template-columns: 1fr; }
}