:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
  background: #151020;
  color: #f5f0ff;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}
* { box-sizing: border-box; }
body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background: radial-gradient(ellipse at 50% 0, #382755 0, transparent 58%), #151020;
}
.game-shell { width: min(100% - 28px, 620px); margin: 0 auto; padding: 24px 0 36px; }
.heading { text-align: center; }
.home-link { color: #c8b8e5; font-size: .88rem; text-decoration: none; }
.home-link:hover { color: #fff; }
.eyebrow { margin: 22px 0 5px; color: #d6a8ff; font-size: .72rem; font-weight: 800; letter-spacing: .19em; }
h1 { margin: 0; font-size: clamp(2.8rem, 12vw, 4.5rem); line-height: 1; letter-spacing: -.07em; }
h1 span { color: #d6a8ff; }
.tagline { margin: 10px 0 22px; color: #c8b8e5; }
.game-card { overflow: hidden; border: 1px solid #ffffff20; border-radius: 22px; background: #211a32; box-shadow: 0 22px 70px #0005; }
.toolbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 16px 18px 6px; }
.toolbar label { display: flex; align-items: center; gap: 8px; color: #d5c8e9; font-size: .86rem; }
select, button { border: 1px solid #ffffff24; border-radius: 10px; padding: 9px 12px; background: #39294f; color: #fff; font: inherit; }
button { border: 0; background: #d6a8ff; color: #241432; font-weight: 800; cursor: pointer; }
button:hover { background: #e6c9ff; }
button:focus-visible, select:focus-visible, a:focus-visible { outline: 3px solid #fff; outline-offset: 3px; }
.score-row { display: flex; justify-content: space-between; gap: 8px; padding: 12px 20px; color: #c8b8e5; font-size: .68rem; font-weight: 800; letter-spacing: .11em; }
.score-row p { margin: 0; }
.score-row strong { margin-left: 4px; color: #fff; font-size: .9rem; letter-spacing: 0; }
.board { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 9px; padding: 12px 16px; }
.board.wide { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.memory-card { display: grid; aspect-ratio: 1; place-items: center; border: 1px solid #ffffff1c; border-radius: 13px; background: linear-gradient(145deg, #46305f, #312441); color: #fff; font-size: clamp(1.3rem, 7vw, 2.5rem); cursor: pointer; transition: transform .15s, background .15s; }
.memory-card:hover:not(:disabled) { transform: translateY(-2px); background: #563d72; }
.memory-card[aria-pressed="true"], .memory-card:disabled { border-color: #e7c7ff70; background: #503766; }
.memory-card.matched { border-color: #72e0b5a0; background: #1d584c; cursor: default; }
.memory-card:focus-visible { outline: 3px solid #fff; outline-offset: 2px; }
.message { min-height: 1.5em; margin: 4px 16px 16px; color: #e0d4ef; text-align: center; }
.hint { color: #aa9bbd; font-size: .83rem; line-height: 1.6; text-align: center; }
@media (max-width: 420px) {
  .toolbar { align-items: stretch; flex-direction: column; }
  .toolbar label { justify-content: space-between; }
  .toolbar select { flex: 1; }
  .board { gap: 6px; padding-inline: 10px; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; } }