:root {
  color-scheme: dark;
  --background: #0a0a0a;
  --surface: #171717;
  --line: #414141;
  --text: #fff5ee;
  --muted: #c5bcb6;
  --accent: #ff6723;
  font-family: system-ui, sans-serif;
  color: var(--text);
  background: var(--background);
}

* { box-sizing: border-box; }

body { margin: 0; }

a { color: inherit; }

:where(a, button):focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

.shell {
  width: min(100% - 2rem, 52rem);
  margin-inline: auto;
  padding-block: clamp(2rem, 7vw, 5rem);
}

.shell.narrow { max-width: 32rem; }

.page-header { margin-block-end: 2rem; }

.brand {
  color: var(--muted);
  text-underline-offset: 0.3em;
}

h1 {
  margin: 0.8rem 0 0;
  font-size: clamp(2.2rem, 7vw, 4.5rem);
  line-height: 1.12;
  letter-spacing: -0.05em;
}

h2 { margin: 0; font-size: 1.3rem; }

p { color: var(--muted); line-height: 1.7; }

.games {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 19rem), 1fr));
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.game-card {
  display: block;
  height: 100%;
  border: 1px solid var(--line);
  background: var(--surface);
  text-decoration: none;
}

.game-card:hover { border-color: var(--accent); }

.game-preview {
  display: grid;
  grid-template-columns: repeat(3, 2.4rem);
  grid-auto-rows: 2.4rem;
  gap: 0.3rem;
  justify-content: center;
  padding: 1.75rem 1rem;
  border-bottom: 1px solid var(--line);
  background: #111;
}

.game-preview span {
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  font-size: 1.1rem;
  font-weight: 700;
}

.preview-numbers span:nth-child(2),
.preview-lights .lit {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--background);
}

.preview-lights span { border-radius: 50%; }

.card-copy { padding: 1rem 1.2rem 1.2rem; }
.card-copy p { margin: 0.4rem 0 0; }

.board {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.5rem;
  max-width: 22rem;
}

.board button,
.action {
  border: 1px solid var(--line);
  border-radius: 0.3rem;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.board button {
  aspect-ratio: 1;
  font-size: clamp(1.5rem, 6vw, 2.6rem);
  font-variant-numeric: tabular-nums;
}

.board button:hover, .action:hover { border-color: var(--accent); }
.board button[aria-disabled="true"] { color: var(--muted); cursor: default; }
.board button[aria-pressed="true"] {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--background);
}

.status { min-height: 1.7em; }
.action { min-height: 2.75rem; padding: 0.5rem 1rem; }