:root {
  /* Light */
  --ab-green: #16b57a;
  --ab-green-2: #11a36d;
  --ab-text: #ffffff;
  --ab-ring: rgba(22, 181, 122, .35);
}

@media (prefers-color-scheme: dark) {
  :root {
    /* Dark: slightly deeper green, brighter text */
    --ab-green: #00875b;
    --ab-green-2: #0f8f63;
    --ab-text: #ffffff;
    --ab-ring: rgba(18, 160, 110, .45);
  }
}

.c-ab {
  --pad-y: .6rem;
  --pad-x: 1.0rem;
  --radius: 999px;
  --font-w: 800;

  display: inline-flex;
  align-items: center;
  gap: .55rem;
  padding: var(--pad-y) var(--pad-x);
  background: var(--ab-green);
  color: var(--ab-text);
  font-weight: var(--font-w);
  text-decoration: none;
  border: 0;
  border-radius: var(--radius);
  white-space: nowrap; /* accommodates longer labels without wrapping */
  line-height: 1;
  transition: transform .06s ease, background .15s ease, box-shadow .15s ease;
  box-shadow: 0 0 0 0 rgba(0,0,0,0);
}

.c-ab:is(:hover, :focus-visible) {
  background: var(--ab-green-2);
  box-shadow: 0 0 0 3px var(--ab-ring);
  outline: none;
}

.c-ab:active,
.c-ab.is-pressed {
  transform: translateY(1px);
}

.c-ab__label { display: inline-block; }

/* Sizes */
.c-ab--sm { --pad-y: .45rem; --pad-x: .9rem; font-size: .92rem; }
.c-ab--md { --pad-y: .62rem; --pad-x: 1.05rem; font-size: 1rem; }
.c-ab--lg { --pad-y: .78rem; --pad-x: 1.25rem; font-size: 1.06rem; }