/* ============================================================
   NEON ARCADE — shared theme + chrome
   Loaded on every page (home, about, each game).
   ============================================================ */
:root {
  --bg: #0a0e27;
  --bg-deep: #050818;
  --surface: rgba(255, 255, 255, 0.05);
  --surface-hover: rgba(255, 255, 255, 0.09);
  --border: rgba(168, 85, 247, 0.25);
  --text: #e8eaff;
  --text-dim: #9aa0c5;
  --cyan: #00f5ff;
  --magenta: #ff00f5;
  --purple: #a855f7;
  --gradient-1: linear-gradient(135deg, #00f5ff 0%, #a855f7 50%, #ff00f5 100%);
  --gradient-2: linear-gradient(90deg, #00f5ff, #ff00f5);
  --shadow-glow: 0 8px 32px rgba(168, 85, 247, 0.3);
}

/* ============== Resets that won't break embedded games ============== */
.na-topbar *, .na-promo-bar *, .na-footer *, .na-floating-promo *,
.na-container, .na-container * { box-sizing: border-box; }

/* Home/About: set body bg. Games override with their own body styles. */
body:not(.in-game) {
  margin: 0; padding: 0;
  background:
    radial-gradient(ellipse at top left, rgba(168, 85, 247, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at bottom right, rgba(0, 245, 255, 0.10) 0%, transparent 50%),
    var(--bg-deep);
  background-attachment: fixed;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, "PingFang SC", "Microsoft YaHei", sans-serif;
  min-height: 100vh;
}

body:not(.in-game) a { color: var(--cyan); text-decoration: none; transition: color 0.2s; }
body:not(.in-game) a:hover { color: var(--magenta); }

/* ============== TOP PROMO BAR (sticky, all pages) ============== */
.na-promo-bar {
  position: sticky; top: 0; z-index: 9999;
  background: linear-gradient(90deg, rgba(168, 85, 247, 0.20) 0%, rgba(255, 0, 245, 0.28) 50%, rgba(168, 85, 247, 0.20) 100%);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(16px) saturate(180%);
  padding: 8px 16px; text-align: center;
  font-size: 13px; color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}
.na-promo-bar a {
  color: var(--text); font-weight: 700; text-decoration: none;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.4);
  padding-bottom: 1px;
}
.na-promo-bar a:hover { color: #fff; border-bottom-color: #fff; }

/* ============== TOPBAR (home + about only) ============== */
.na-topbar {
  position: sticky; top: 37px; z-index: 9998;
  height: 60px;
  background: rgba(10, 14, 39, 0.88);
  backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; padding: 0 24px; gap: 16px;
}
.na-logo {
  font-weight: 800; font-size: 20px; letter-spacing: 0.5px;
  background: var(--gradient-2);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.na-logo::before { content: '◆ '; color: var(--cyan); -webkit-text-fill-color: var(--cyan); }
.na-nav { display: flex; gap: 6px; flex: 1; margin-left: 28px; }
.na-nav a {
  color: var(--text-dim); font-size: 14px; font-weight: 500;
  padding: 8px 14px; border-radius: 10px; transition: all 0.15s;
}
.na-nav a:hover { color: var(--cyan); background: var(--surface); }
.na-nav a.active { color: var(--cyan); background: var(--surface); }

.na-lang {
  display: flex; gap: 2px; padding: 3px;
  background: var(--surface); border-radius: 10px; border: 1px solid var(--border);
}
.na-lang button {
  background: transparent; border: none; color: var(--text-dim);
  padding: 5px 12px; border-radius: 7px; cursor: pointer;
  font-size: 12px; font-weight: 700; letter-spacing: 0.5px;
  transition: all 0.15s;
  font-family: inherit;
}
.na-lang button:hover { color: var(--text); }
.na-lang button.active {
  background: var(--gradient-2); color: white;
  box-shadow: 0 0 10px rgba(255, 0, 245, 0.4);
}

/* ============== FLOATING BACK BUTTON (game pages only) ============== */
.na-floating-back {
  position: fixed; top: 50px; left: 16px; z-index: 9997;
  display: flex; gap: 8px; align-items: center;
  font-family: -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
}
.na-floating-back a.back {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 14px; font-size: 13px; font-weight: 600;
  background: rgba(10, 14, 39, 0.85); color: var(--cyan);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border); border-radius: 10px;
  text-decoration: none; transition: all 0.15s;
}
.na-floating-back a.back:hover {
  border-color: var(--cyan);
  box-shadow: 0 0 16px rgba(0, 245, 255, 0.3);
}
.na-floating-back .na-lang { padding: 2px; }
.na-floating-back .na-lang button { padding: 4px 9px; font-size: 11px; }

/* ============== HOME ============== */
.na-container { max-width: 1200px; margin: 0 auto; padding: 32px 24px 80px; }
.na-hero { text-align: center; padding: 48px 0 32px; }
.na-hero h1 {
  font-size: clamp(40px, 6vw, 72px); font-weight: 900; margin: 0 0 16px;
  background: var(--gradient-1);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  letter-spacing: -1px; line-height: 1.05;
  filter: drop-shadow(0 4px 24px rgba(168, 85, 247, 0.3));
}
.na-hero p {
  font-size: 18px; color: var(--text-dim);
  max-width: 600px; margin: 0 auto; line-height: 1.55;
}

.na-game-grid {
  display: grid; gap: 20px;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  margin-top: 32px;
}
.na-game-card {
  display: block; padding: 24px 22px; text-decoration: none; color: inherit;
  background: var(--surface); border: 1px solid var(--border); border-radius: 20px;
  backdrop-filter: blur(20px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative; overflow: hidden;
}
.na-game-card::before {
  content: ''; position: absolute; inset: -1px;
  background: linear-gradient(135deg, transparent 30%, rgba(0, 245, 255, 0.15), transparent 70%);
  opacity: 0; transition: opacity 0.3s; border-radius: 20px;
}
.na-game-card:hover {
  transform: translateY(-3px);
  border-color: var(--purple);
  box-shadow: var(--shadow-glow);
}
.na-game-card:hover::before { opacity: 1; }
.na-game-card.disabled { opacity: 0.5; cursor: not-allowed; }
.na-game-card.disabled:hover { transform: none; box-shadow: none; border-color: var(--border); }
.na-game-icon { font-size: 44px; margin-bottom: 14px; line-height: 1; }
.na-game-card h3 {
  margin: 0 0 6px; font-size: 21px; font-weight: 700;
  color: var(--text); letter-spacing: -0.2px;
}
.na-game-card .desc { color: var(--text-dim); font-size: 14px; line-height: 1.5; margin: 0 0 14px; }
.na-game-card .meta {
  font-size: 11px; color: var(--cyan); font-weight: 700;
  letter-spacing: 1.5px; text-transform: uppercase;
}
.na-game-card.disabled .meta { color: var(--text-dim); }

/* ============== FEATURE BANNER (wdch.cc) ============== */
.na-feature {
  margin: 48px 0 0; padding: 40px 36px;
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.10) 0%, rgba(255, 0, 245, 0.18) 100%);
  border: 1px solid var(--border); border-radius: 24px;
  position: relative; overflow: hidden;
}
.na-feature::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 85% 50%, rgba(0, 245, 255, 0.20), transparent 50%);
}
.na-feature-content { position: relative; z-index: 1; max-width: 720px; }
.na-feature .label {
  font-size: 11px; font-weight: 700; letter-spacing: 2px;
  color: var(--cyan); text-transform: uppercase;
}
.na-feature h2 {
  font-size: 32px; margin: 8px 0 14px; font-weight: 800; letter-spacing: -0.5px;
  background: var(--gradient-2);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.na-feature p {
  color: var(--text); font-size: 16px; line-height: 1.65; margin: 0 0 22px;
}
.na-btn {
  display: inline-block; padding: 12px 26px;
  background: var(--gradient-2); color: white !important;
  font-weight: 700; border-radius: 12px; text-decoration: none;
  box-shadow: 0 8px 24px rgba(255, 0, 245, 0.35);
  transition: transform 0.2s, box-shadow 0.2s;
}
.na-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(255, 0, 245, 0.5);
}

/* ============== ABOUT ============== */
.na-section {
  background: var(--surface); border: 1px solid var(--border); border-radius: 20px;
  padding: 32px 30px; margin-bottom: 20px; backdrop-filter: blur(16px);
}
.na-section h2 {
  margin: 0 0 16px; font-size: 28px; font-weight: 800; letter-spacing: -0.3px;
  background: var(--gradient-2);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.na-section h3 { color: var(--cyan); margin: 24px 0 8px; font-size: 16px; }
.na-section p { color: var(--text-dim); line-height: 1.7; margin: 0 0 12px; }
.na-product-grid {
  display: grid; gap: 14px;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  margin: 16px 0 24px;
}
.na-product-card {
  padding: 18px; background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border); border-radius: 14px;
}
.na-product-card .icon { font-size: 28px; margin-bottom: 8px; line-height: 1; }
.na-product-card h4 { margin: 0 0 4px; color: var(--text); font-size: 15px; }
.na-product-card p { font-size: 13px; margin: 0; color: var(--text-dim); }

/* ============== FOOTER ============== */
.na-footer {
  margin-top: 60px; padding: 28px 24px 20px;
  border-top: 1px solid var(--border);
  text-align: center; color: var(--text-dim); font-size: 13px;
}
.na-footer a { color: var(--cyan); font-weight: 600; }
.na-footer .credits { margin-top: 6px; font-size: 11px; color: var(--text-dim); opacity: 0.7; }

/* ============== FLOATING WDCH PROMO (game pages) ============== */
.na-floating-promo {
  position: fixed; bottom: 20px; right: 20px; z-index: 9996;
  max-width: 280px; padding: 16px 18px 16px 18px;
  background: rgba(10, 14, 39, 0.94); backdrop-filter: blur(16px);
  border: 1px solid var(--border); border-radius: 14px;
  box-shadow: 0 10px 36px rgba(0, 0, 0, 0.6), 0 0 24px rgba(168, 85, 247, 0.15);
  font-family: -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  font-size: 13px; line-height: 1.5;
  animation: na-slide-in 0.6s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}
@keyframes na-slide-in {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}
.na-floating-promo .close {
  position: absolute; top: 4px; right: 8px; cursor: pointer;
  color: var(--text-dim); font-size: 18px; background: none; border: none;
  width: 24px; height: 24px; padding: 0;
}
.na-floating-promo .close:hover { color: var(--text); }
.na-floating-promo .label {
  font-size: 10px; font-weight: 700; color: var(--cyan); letter-spacing: 1.5px;
}
.na-floating-promo h4 {
  margin: 4px 0 6px; font-size: 15px; color: var(--text); font-weight: 700;
}
.na-floating-promo p { margin: 0 0 12px; color: var(--text-dim); font-size: 12px; }
.na-floating-promo a.cta {
  display: inline-block; padding: 7px 14px; font-size: 12px; font-weight: 700;
  background: var(--gradient-2); color: white !important; border-radius: 8px;
  text-decoration: none;
}
.na-floating-promo a.cta:hover { transform: translateY(-1px); }

/* ============== RESPONSIVE ============== */
@media (max-width: 640px) {
  .na-topbar { padding: 0 14px; height: 54px; }
  .na-nav { margin-left: 6px; gap: 2px; }
  .na-nav a { padding: 6px 8px; font-size: 12px; }
  .na-container { padding: 24px 16px 60px; }
  .na-hero { padding: 32px 0 24px; }
  .na-feature { padding: 28px 22px; }
  .na-feature h2 { font-size: 24px; }
  .na-floating-promo {
    left: 12px; right: 12px; bottom: 12px; max-width: none;
  }
  .na-floating-back { top: 46px; left: 12px; }
}