/* ═══════════════════════════════════════════════════════════════
   CellSnake content-pages design system.
   One shared stylesheet for every static page (guides, legal,
   contact). Matches the game's brand: deep-space background,
   cyan→violet gradient accents, Inter + Space Grotesk type.
   ═══════════════════════════════════════════════════════════════ */

:root {
  --bg: #05060d;
  --bg-card: rgba(17, 24, 39, 0.62);
  --bg-card-hover: rgba(22, 30, 48, 0.72);
  --border: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(94, 216, 255, 0.28);
  --text: rgba(230, 240, 255, 0.88);
  --text-dim: rgba(255, 255, 255, 0.55);
  --text-faint: rgba(255, 255, 255, 0.38);
  --cyan: #5ec8ff;
  --cyan-bright: #87e2ff;
  --violet: #9a6bff;
  --emerald: #4ade80;
  --amber: #fbbf24;
  --rose: #fb7185;
  --grad-brand: linear-gradient(180deg, #57e3ff 0%, #4b9bff 45%, #9a6bff 100%);
  --grad-title: linear-gradient(180deg, #e8eef7 0%, #b6c4d8 100%);
  --font-body: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-display: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  --maxw: 860px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background:
    radial-gradient(ellipse 70% 40% at 50% 0%, rgba(140, 80, 220, 0.10) 0%, transparent 60%),
    radial-gradient(ellipse 50% 30% at 15% 45%, rgba(34, 200, 255, 0.06) 0%, transparent 65%),
    var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.75;
  font-size: 16px;
  min-height: 100vh;
}

/* ── Header ──────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(5, 6, 13, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.site-header .inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
}
.site-header .brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
}
.site-header .brand img { width: auto; height: 30px; }
.site-header .brand .cell { color: #dfe8f5; }
.site-header .brand .snake {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.site-header nav {
  display: flex;
  gap: 4px;
  flex: 1;
  overflow-x: auto;
  scrollbar-width: none;
}
.site-header nav::-webkit-scrollbar { display: none; }
.site-header nav a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 8px;
  white-space: nowrap;
  transition: color .15s, background .15s;
}
.site-header nav a:hover { color: #fff; background: rgba(255,255,255,0.06); }
.site-header nav a.active { color: var(--cyan-bright); background: rgba(94,216,255,0.10); }
.btn-play {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--grad-brand);
  color: #fff !important;
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 9px 20px;
  border-radius: 10px;
  box-shadow: 0 4px 18px rgba(94, 216, 255, 0.35);
  transition: transform .15s, box-shadow .15s;
  white-space: nowrap;
}
.btn-play:hover { transform: translateY(-1px); box-shadow: 0 6px 24px rgba(94, 216, 255, 0.5); }

/* ── Layout ──────────────────────────────────────────────────── */
.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 48px 24px 80px;
}

/* ── Hero ────────────────────────────────────────────────────── */
.page-hero { margin-bottom: 40px; }
.page-hero .kicker {
  font-size: 11px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--cyan);
  font-weight: 700;
  margin-bottom: 10px;
  font-family: var(--font-display);
}
.page-hero h1 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(30px, 5vw, 42px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  background: var(--grad-title);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.page-hero .lead {
  font-size: 17px;
  color: var(--text-dim);
  max-width: 640px;
  margin: 0;
}
.page-hero .meta {
  display: flex;
  gap: 16px;
  margin-top: 18px;
  font-size: 12px;
  color: var(--text-faint);
  flex-wrap: wrap;
}

/* ── Typography ──────────────────────────────────────────────── */
article h2 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  color: #e8f2ff;
  margin: 48px 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-accent);
  letter-spacing: -0.01em;
}
article h3 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  color: var(--cyan-bright);
  margin: 28px 0 10px;
}
article p { margin: 14px 0; }
article ul, article ol { padding-left: 26px; margin: 14px 0; }
article li { margin: 8px 0; }
article strong { color: var(--cyan); font-weight: 600; }
article a { color: var(--cyan); text-decoration: underline; text-underline-offset: 3px; }
article a:hover { color: var(--cyan-bright); }
kbd {
  display: inline-block;
  padding: 2px 9px;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.16);
  border-bottom-width: 2px;
  border-radius: 6px;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 12.5px;
  color: #e5e7eb;
  margin: 0 2px;
}

/* ── Components ──────────────────────────────────────────────── */
.callout {
  background: linear-gradient(180deg, rgba(94,216,255,0.09), rgba(94,216,255,0.03));
  border: 1px solid var(--border-accent);
  border-radius: 14px;
  padding: 18px 22px;
  margin: 22px 0;
}
.callout .label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan-bright);
  font-weight: 700;
  margin-bottom: 8px;
  font-family: var(--font-display);
}
.callout.violet {
  background: linear-gradient(180deg, rgba(154,107,255,0.10), rgba(154,107,255,0.03));
  border-color: rgba(154,107,255,0.30);
}
.callout.violet .label { color: #c4a8ff; }
.callout.gold {
  background: linear-gradient(180deg, rgba(251,191,36,0.09), rgba(251,191,36,0.03));
  border-color: rgba(251,191,36,0.28);
}
.callout.gold .label { color: var(--amber); }

.card-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  margin: 22px 0;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 22px;
  transition: border-color .2s, background .2s, transform .2s;
}
.card:hover { border-color: var(--border-accent); background: var(--bg-card-hover); }
.card .icon { font-size: 26px; margin-bottom: 10px; }
.card h3 { margin: 0 0 8px !important; font-size: 15px !important; }
.card p { margin: 0; font-size: 13.5px; color: var(--text-dim); }

.stat-row {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  margin: 22px 0;
}
.stat {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 18px;
  text-align: center;
}
.stat .num {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}
.stat .label {
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-top: 6px;
}

table.styled {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin: 20px 0;
}
table.styled th {
  text-align: left;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-accent);
  font-family: var(--font-display);
}
table.styled td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}
table.styled tr:hover td { background: rgba(255,255,255,0.02); }

.qa {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 22px;
  margin: 14px 0;
}
.qa h3 { margin: 0 0 10px !important; font-size: 15px !important; color: #eef4ff !important; }
.qa h3::before { content: "Q "; color: var(--cyan); font-weight: 800; }
.qa p { margin: 0; font-size: 14px; color: var(--text-dim); }

.cta-banner {
  margin-top: 48px;
  text-align: center;
  padding: 36px 24px;
  background: linear-gradient(180deg, rgba(94,216,255,0.07), rgba(154,107,255,0.05));
  border: 1px solid var(--border-accent);
  border-radius: 18px;
}
.cta-banner .title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: #eef4ff;
  margin-bottom: 16px;
}
.cta-banner .btn-play { font-size: 15px; padding: 14px 34px; }

/* ── Related links ───────────────────────────────────────────── */
.related {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.related .label {
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--text-faint);
  font-weight: 700;
  margin-bottom: 14px;
  font-family: var(--font-display);
}

/* ── Footer ──────────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--border);
  background: rgba(5, 6, 13, 0.6);
}
.site-footer .inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 32px 24px;
}
.site-footer .links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  justify-content: center;
  margin-bottom: 18px;
}
.site-footer a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 13px;
}
.site-footer a:hover { color: var(--cyan); }
.site-footer .fine {
  text-align: center;
  font-size: 11.5px;
  color: var(--text-faint);
}

@media (max-width: 640px) {
  .container { padding: 32px 18px 64px; }
  .site-header .inner { padding: 10px 16px; gap: 12px; }
  .site-header nav a { padding: 6px 9px; font-size: 12px; }
  .btn-play { padding: 8px 14px; font-size: 12px; }
}