/* =====================================================================
   Cool History Games — shared styles
   Modern dark-first theme, bright accents, mobile responsive.
   ===================================================================== */

:root {
  --bg: #0b0d17;
  --bg-elev: #141729;
  --bg-elev-2: #1c2040;
  --border: #2a2f55;
  --text: #f5f6ff;
  --text-dim: #a8acc8;
  --accent: #a3ff12;        /* electric lime */
  --accent-2: #ff4ecd;      /* hot pink */
  --accent-3: #6c5cff;      /* electric purple */
  --warn: #ffb547;
  --danger: #ff4f6e;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-1: 0 4px 24px rgba(0,0,0,.35);
  --shadow-2: 0 12px 40px rgba(108,92,255,.25);
  --font-display: 'Space Grotesk', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: radial-gradient(circle at 20% 0%, rgba(108,92,255,.18), transparent 40%),
              radial-gradient(circle at 80% 100%, rgba(255,78,205,.12), transparent 50%),
              var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }

/* ---------- Header ---------- */
.snc-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(11,13,23,.78);
  border-bottom: 1px solid var(--border);
}
.snc-header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.snc-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 22px;
  letter-spacing: -0.02em;
  color: var(--text);
}
.snc-logo:hover { text-decoration: none; }
.snc-logo-mark {
  width: 32px; height: 32px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-3) 100%);
  display: grid; place-items: center;
  color: #0b0d17;
  font-weight: 900;
  box-shadow: 0 4px 18px rgba(163,255,18,.4);
}
.snc-nav {
  display: flex;
  gap: 6px;
  margin-left: auto;
  flex-wrap: wrap;
}
.snc-nav a {
  color: var(--text-dim);
  padding: 8px 14px;
  border-radius: 999px;
  font-weight: 500;
  font-size: 14px;
  transition: all .15s ease;
}
.snc-nav a:hover {
  background: var(--bg-elev);
  color: var(--text);
  text-decoration: none;
}
.snc-nav a.active {
  background: var(--accent);
  color: #0b0d17;
}

/* ---------- Layout ---------- */
.snc-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 24px 60px;
}

.snc-hero {
  padding: 56px 0 36px;
  text-align: center;
}
.snc-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(36px, 6vw, 64px);
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin: 0 0 16px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent-2) 50%, var(--accent-3) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.snc-hero p {
  font-size: 18px;
  color: var(--text-dim);
  max-width: 580px;
  margin: 0 auto;
}

/* ---------- Game grid ---------- */
.snc-grid-title {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  margin: 36px 0 18px;
  letter-spacing: -0.02em;
}
.snc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 18px;
}
.snc-card {
  position: relative;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
  display: flex;
  flex-direction: column;
}
.snc-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-3);
  box-shadow: var(--shadow-2);
  text-decoration: none;
}
.snc-card-thumb {
  aspect-ratio: 4 / 3;
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}
.snc-card-thumb svg { width: 70%; height: 70%; }
.snc-card-body {
  padding: 14px 16px 16px;
}
.snc-card h3 {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}
.snc-card p {
  margin: 0;
  color: var(--text-dim);
  font-size: 13px;
}
.snc-card-tag {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  background: rgba(163,255,18,.14);
  color: var(--accent);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  margin-top: 8px;
}

/* Card thumbnail color variants */
.thumb-purple { background: linear-gradient(135deg, #6c5cff 0%, #2a1d80 100%); }
.thumb-pink   { background: linear-gradient(135deg, #ff4ecd 0%, #7d1c63 100%); }
.thumb-lime   { background: linear-gradient(135deg, #a3ff12 0%, #4a8c00 100%); }
.thumb-amber  { background: linear-gradient(135deg, #ffb547 0%, #8a4d00 100%); }
.thumb-cyan   { background: linear-gradient(135deg, #4ecdff 0%, #1c637d 100%); }
.thumb-coral  { background: linear-gradient(135deg, #ff7a59 0%, #802a14 100%); }
.thumb-mint   { background: linear-gradient(135deg, #5cffb3 0%, #007a4a 100%); }
.thumb-rose   { background: linear-gradient(135deg, #ff4f6e 0%, #7a1027 100%); }

/* ---------- Game page layout ---------- */
.snc-game-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: start;
}
.snc-game-main {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.snc-game-title {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 4px;
}
.snc-game-sub {
  color: var(--text-dim);
  margin: 0 0 20px;
  font-size: 14px;
}
.snc-game-stage {
  display: grid;
  place-items: center;
  padding: 16px 0;
}
.snc-game-controls {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 16px;
  justify-content: center;
}
.snc-btn {
  border: 0;
  background: var(--accent);
  color: #0b0d17;
  font-weight: 700;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 14px;
  transition: transform .12s ease, filter .12s ease;
}
.snc-btn:hover { transform: translateY(-1px); filter: brightness(1.08); }
.snc-btn.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.snc-btn.ghost:hover { border-color: var(--accent); color: var(--accent); }

.snc-stat {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-dim);
  font-variant-numeric: tabular-nums;
}
.snc-stat strong {
  color: var(--text);
  font-size: 16px;
  font-weight: 700;
}
.snc-stat-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 16px;
  justify-content: center;
}

/* ---------- Ad slots ---------- */
.snc-ad {
  display: block;
  margin: 24px auto;
  text-align: center;
  min-height: 90px;
  background: rgba(255,255,255,.02);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 8px;
  position: relative;
}
.snc-ad::before {
  content: 'Advertisement';
  display: block;
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 6px;
}
.snc-ad ins { display: block; }

/* ---------- Footer ---------- */
.snc-footer {
  border-top: 1px solid var(--border);
  margin-top: 60px;
  padding: 36px 24px 28px;
  color: var(--text-dim);
  font-size: 13px;
  text-align: center;
}
.snc-footer-links {
  display: flex;
  gap: 18px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.snc-footer-links a { color: var(--text-dim); }
.snc-footer-links a:hover { color: var(--accent); }

/* ---------- Prose pages ---------- */
.snc-prose {
  max-width: 720px;
  margin: 0 auto;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 40px;
}
.snc-prose h1 {
  font-family: var(--font-display);
  letter-spacing: -0.02em;
  margin-top: 0;
}
.snc-prose h2 {
  font-family: var(--font-display);
  letter-spacing: -0.01em;
  margin-top: 28px;
}
.snc-prose p, .snc-prose li { color: var(--text-dim); }
.snc-prose strong { color: var(--text); }

/* ---------- Game-specific helpers ---------- */
canvas { display: block; touch-action: none; }
.snc-board {
  display: grid;
  gap: 6px;
  background: var(--bg-elev-2);
  padding: 8px;
  border-radius: var(--radius-sm);
}
.snc-cell {
  background: var(--bg);
  border-radius: 6px;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-family: var(--font-display);
  user-select: none;
}

/* ---------- Mobile ---------- */
@media (max-width: 640px) {
  .snc-header-inner { padding: 12px 16px; gap: 12px; }
  .snc-nav { gap: 2px; }
  .snc-nav a { padding: 6px 10px; font-size: 13px; }
  .snc-container { padding: 16px 14px 40px; }
  .snc-hero { padding: 32px 0 20px; }
  .snc-prose { padding: 24px 20px; }
  .snc-game-main { padding: 16px; }
}