:root {
  color-scheme: light;
  --bg: #f8faf5;
  --surface: #f2f4f0;
  --on-surface: #191c1a;
  --on-variant: #404942;
  --primary: #006d44;
  --primary-container: #91f7be;
  --card: #fff;
  --shadow: 0 1px 2px rgb(0 0 0 / 0.2), 0 2px 6px rgb(0 0 0 / 0.12);
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #111412;
    --surface: #1d201e;
    --on-surface: #e1e3df;
    --on-variant: #c0c9c0;
    --primary: #75daa3;
    --primary-container: #005232;
    --card: #1d201e;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Roboto, system-ui, sans-serif;
  background: var(--bg);
  color: var(--on-surface);
}

.top-app-bar {
  display: flex;
  align-items: center;
  height: 64px;
  padding: 0 16px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.top-app-bar h1 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 500;
}

main {
  width: min(52rem, 100%);
  margin: 0 auto;
  padding: 24px 16px 40px;
}

.intro {
  margin: 0 0 20px;
  color: var(--on-variant);
  font-size: 1.05rem;
}

.game-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .game-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.game-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px;
  border-radius: 16px;
  background: var(--card);
  color: inherit;
  text-decoration: none;
  box-shadow: var(--shadow);
  border: 2px solid transparent;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.game-card:hover,
.game-card:focus-visible {
  border-color: var(--primary);
  outline: none;
  transform: translateY(-2px);
}

.game-emoji {
  font-size: 2.5rem;
  line-height: 1.2;
}

.game-card h2 {
  margin: 0;
  font-size: 1.35rem;
  color: var(--primary);
}

.game-card p {
  margin: 0;
  color: var(--on-variant);
  line-height: 1.45;
}