:root {
  --border-radius: 12px;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;

  --foreground-rgb: 255, 255, 255;
  --background-rgb: 10, 10, 10;

  --callout-rgb: 238, 240, 241;
  --callout-border-rgb: 172, 175, 176;
  --card-rgb: 180, 185, 188;
  --card-border-rgb: 131, 134, 135;
}

body {
  color: rgb(var(--foreground-rgb));
  background: rgb(var(--background-rgb));
}

.wrapper {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  align-items: center;
  margin: 10vh 10vw;
}

.centre {
  margin: 25vh 0;
  padding: 1rem 1.2rem;
  border-radius: var(--border-radius);
  background: rgb(var(--card-rgb));
  border: 1px solid rgb(var(--card-border-rgb));
  transition: background 200ms, border 200ms;
}

footer {
  width: 100%;
  display: flex;
  justify-content: space-between;
  font-family: var(--font-sans);
}

/* Enable hover only on non-touch devices */
@media (hover: hover) and (pointer: fine) {
  .centre:hover {
    background: rgba(var(--card-rgb), 0.7);
    border: 1px solid rgba(var(--card-border-rgb), 0.7);
  }
}

@media (prefers-reduced-motion) {
  .centre:hover {
    transform: none;
  }
}