:root {
  color-scheme: dark;
  --bg: #09111f;
  --panel: rgba(17, 26, 46, 0.9);
  --panel-border: rgba(255, 255, 255, 0.08);
  --text: #eff4ff;
  --muted: #9bb0d0;
  --accent: #7ee2ff;
  --button: #1d2a46;
  --button-hover: #27365a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top, rgba(80, 120, 255, 0.18), transparent 30%),
    linear-gradient(180deg, #050914, var(--bg));
}

.app {
  width: min(1120px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 28px 0 36px;
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: end;
  margin-bottom: 20px;
}

.eyebrow {
  margin: 0 0 8px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  font-size: 0.75rem;
}

h1 {
  margin: 0;
  font-size: clamp(2.8rem, 7vw, 5rem);
  line-height: 0.95;
}

.lede {
  max-width: 560px;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 1rem;
}

.meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(82px, 1fr));
  gap: 12px;
}

.meta div,
.panel,
.board-card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 20px;
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.35);
}

.meta div {
  padding: 14px 16px;
  min-width: 96px;
}

.meta span,
.status,
.panel li {
  color: var(--muted);
}

.meta strong {
  display: block;
  margin-top: 6px;
  font-size: 1.6rem;
}

.game-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 20px;
  align-items: start;
}

.board-card {
  padding: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

canvas {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 14px;
  background: #08101c;
}

#board {
  max-width: min(100%, 420px);
  aspect-ratio: 1 / 2;
}

.status {
  font-size: 0.95rem;
}

.side-card {
  display: grid;
  gap: 16px;
}

.panel {
  padding: 16px;
}

.panel h2 {
  margin: 0 0 12px;
  font-size: 1rem;
}

.controls ul {
  margin: 0 0 16px;
  padding-left: 18px;
  display: grid;
  gap: 8px;
}

.buttons,
.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

button {
  appearance: none;
  border: 1px solid var(--panel-border);
  background: var(--button);
  color: var(--text);
  border-radius: 14px;
  padding: 12px 14px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: transform 120ms ease, background 120ms ease;
}

button:hover,
button:focus-visible {
  background: var(--button-hover);
  transform: translateY(-1px);
}

@media (max-width: 920px) {
  .hero,
  .game-shell {
    grid-template-columns: 1fr;
  }

  .hero {
    display: grid;
  }

  .meta {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 560px) {
  .app {
    width: min(100vw - 24px, 1120px);
    padding-top: 20px;
  }

  .meta {
    grid-template-columns: 1fr 1fr 1fr;
  }

  .buttons,
  .grid {
    grid-template-columns: 1fr 1fr;
  }
}