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

:root {
  --bg:       #080c14;
  --bg2:      #0e1422;
  --accent:   #7c5cfc;
  --accent2:  #3ecfff;
  --text:     #e8eaf0;
  --muted:    #6b7280;
  --card-bg:  #111827;
  --card-border: rgba(124, 92, 252, 0.35);
  --glow:     rgba(124, 92, 252, 0.18);
}

html { font-size: 16px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}
:lang(zh), :lang(zh) * {
  font-family: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei UI', 'Microsoft YaHei', sans-serif;
}

/* ── Header ── */
.site-header {
  text-align: center;
  padding: 64px 20px 48px;
  position: relative;
}
.site-header::after {
  content: '';
  display: block;
  width: 120px; height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  margin: 24px auto 0;
}

.site-title {
  font-size: clamp(2rem, 8vw, 3.6rem);
  font-weight: 800;
  letter-spacing: 0.12em;
  background: linear-gradient(135deg, #fff 30%, var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
}

.site-desc {
  margin-top: 14px;
  font-size: clamp(0.9rem, 3vw, 1.05rem);
  color: var(--muted);
  letter-spacing: 0.04em;
}

/* ── Main ── */
main {
  flex: 1;
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 8px 20px 64px;
}

.section-label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 20px;
}

/* ── Game Grid ── */
.game-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.game-card {
  display: flex;
  flex-direction: column;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
  box-shadow: 0 0 0 transparent;
}
.game-card:active { transform: translateY(-1px); }

.game-thumb {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #0e1a30, #1a0e30);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 64px;
  line-height: 1;
  border-bottom: 1px solid var(--card-border);
}

.game-info {
  padding: 18px 20px 20px;
}
.game-info h2 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}
.game-info p {
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.5;
}
.game-badge {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent2);
  border: 1px solid rgba(62, 207, 255, 0.4);
  border-radius: 4px;
  padding: 2px 8px;
}

/* ── Footer ── */
.site-footer {
  text-align: center;
  padding: 24px 20px;
  font-size: 0.8rem;
  color: var(--muted);
  border-top: 1px solid rgba(255,255,255,0.05);
}

/* ── Navigation ── */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 12, 20, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(124, 92, 252, 0.2);
}
.nav-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
  height: 52px;
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-logo {
  font-weight: 800;
  font-size: 0.9rem;
  letter-spacing: 0.14em;
  color: #fff;
  text-decoration: none;
  margin-right: auto;
  white-space: nowrap;
  transition: opacity 0.15s;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2px;
}
.nav-links a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 6px 12px;
  border-radius: 6px;
  transition: color 0.15s, background 0.15s;
  white-space: nowrap;
}
.nav-links a.active { color: var(--accent2); }

/* ── Page Hero（サブページ用コンパクトヘッダー） ── */
.page-hero {
  text-align: center;
  padding: 48px 20px 36px;
  position: relative;
}
.page-hero::after {
  content: '';
  display: block;
  width: 80px; height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  margin: 20px auto 0;
}
.page-hero h1 {
  font-size: clamp(1.6rem, 6vw, 2.4rem);
  font-weight: 800;
  letter-spacing: 0.08em;
  background: linear-gradient(135deg, #fff 30%, var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-hero p {
  margin-top: 10px;
  font-size: 0.95rem;
  color: var(--muted);
}

/* ── Prose（About・Privacy 本文） ── */
.prose {
  max-width: 680px;
  margin: 0 auto;
  line-height: 1.8;
}
.prose h2 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent2);
  letter-spacing: 0.05em;
  margin: 36px 0 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid rgba(62, 207, 255, 0.2);
}
.prose p  { font-size: 0.92rem; color: #c4c8d4; margin-bottom: 12px; }
.prose ul { padding-left: 1.4em; margin-bottom: 12px; }
.prose li { font-size: 0.92rem; color: #c4c8d4; margin-bottom: 4px; }
.prose a  { color: var(--accent2); text-decoration: underline; text-underline-offset: 3px; }

.prose-updated {
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 32px;
}

/* ── Footer links ── */
.footer-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 4px 16px;
  margin-bottom: 10px;
}
.footer-links a {
  font-size: 0.8rem;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.15s;
}

/* ── Language Selector (site-wide) ── */
#site-lang-selector {
  display: flex;
  gap: 4px;
  margin-left: 8px;
  flex-shrink: 0;
}
.site-lang-btn {
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  border: 1px solid rgba(124,92,252,0.35);
  border-radius: 5px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  white-space: nowrap;
}
.site-lang-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ── Responsive ── */
@media (max-width: 400px) {
  .game-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .nav-links a { padding: 6px 8px; font-size: 0.8rem; }
  .site-lang-btn { padding: 4px 8px; font-size: 0.7rem; }
}

/* ── マウス専用ホバーエフェクト（タッチデバイスで残留しない） ── */
@media (hover: hover) {
  .game-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    box-shadow: 0 8px 32px var(--glow), 0 0 0 1px var(--accent);
  }
  .nav-logo:hover    { opacity: 0.75; }
  .nav-links a:hover { color: var(--text); background: rgba(255,255,255,0.06); }
  .footer-links a:hover { color: var(--text); }
  .site-lang-btn:hover  { background: rgba(124,92,252,0.1); color: var(--text); }
}

/* ── タッチデバイス向けナビリンク拡大 ── */
@media (pointer: coarse) {
  .nav-links a   { padding: 10px 12px; }
  .site-lang-btn { min-height: 40px; padding: 6px 14px; }
}