:root {
  --bg: #0b1020;
  --bg-soft: #121936;
  --panel: #161f42;
  --line: #26305c;
  --ink: #eef2ff;
  --muted: #9aa6d0;
  --accent: #5eead4;
  --radius: 16px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: radial-gradient(1200px 600px at 15% -10%, #1b2550 0%, var(--bg) 55%) no-repeat, var(--bg);
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  min-height: 100%;
}

a { color: inherit; text-decoration: none; }

.shell {
  max-width: 1080px;
  margin: 0 auto;
  padding: 28px 20px 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 34px;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: linear-gradient(140deg, #5eead4, #818cf8);
  display: grid;
  place-items: center;
  font-weight: 800;
  color: #06121f;
  font-size: 18px;
}

.brand-name { font-weight: 700; letter-spacing: .3px; }
.brand-tag { color: var(--muted); font-size: 13px; margin-left: auto; }

.hero h1 {
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1.1;
  margin: 0 0 10px;
  letter-spacing: -0.5px;
}

.hero p {
  color: var(--muted);
  max-width: 60ch;
  margin: 0 0 32px;
  font-size: 15.5px;
  line-height: 1.55;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.card {
  position: relative;
  display: block;
  background: linear-gradient(180deg, var(--panel), var(--bg-soft));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 18px 16px;
  transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease;
  overflow: hidden;
}

.card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  background: radial-gradient(320px 140px at 85% -20%, var(--card-accent, #5eead4) 0%, transparent 70%);
  opacity: .22;
  pointer-events: none;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 18px;
  right: 18px;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: var(--card-accent, #5eead4);
  opacity: .75;
}

.card:hover, .card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--card-accent, #5eead4);
  box-shadow: 0 14px 30px -18px var(--card-accent, #5eead4);
  outline: none;
}

.card h2 {
  margin: 8px 0 8px;
  font-size: 19px;
  letter-spacing: -0.2px;
}

.card p {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.5;
}

.tags { display: flex; gap: 6px; flex-wrap: wrap; }

.tag {
  font-size: 11px;
  letter-spacing: .4px;
  text-transform: uppercase;
  color: var(--card-accent, #5eead4);
  border: 1px solid color-mix(in srgb, var(--card-accent, #5eead4) 45%, transparent);
  border-radius: 999px;
  padding: 3px 9px;
}

.play {
  margin-top: 16px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--card-accent, #5eead4);
}

.card-best {
  margin-top: 2px;
  font-size: 12.5px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.foot {
  margin-top: 40px;
  color: var(--muted);
  font-size: 12.5px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* ---------- in-game shell ---------- */

.game-shell {
  max-width: 720px;
  margin: 0 auto;
  padding: 22px 18px 48px;
}

.back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 13.5px;
  margin-bottom: 20px;
}

.back:hover { color: var(--ink); }

.game-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.game-head h1 { margin: 0; font-size: 24px; letter-spacing: -0.3px; }
.game-head .meta { color: var(--muted); font-size: 13px; }

.hud {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.stat {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 8px 14px;
  min-width: 92px;
}

.stat .k { display: block; font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .6px; }
.stat .v { font-size: 20px; font-weight: 700; font-variant-numeric: tabular-nums; }

.btn {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  border-radius: 12px;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

.btn.primary {
  background: linear-gradient(140deg, #5eead4, #818cf8);
  color: #06121f;
  border: none;
}

.btn:active { transform: translateY(1px); }

.board {
  position: relative;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}

.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(11, 16, 32, .82);
  border-radius: var(--radius);
  text-align: center;
  padding: 24px;
}

.overlay[hidden] { display: none; }
.overlay h2 { margin: 0 0 6px; font-size: 24px; }
.overlay p { margin: 0 0 18px; color: var(--muted); font-size: 14px; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}