/**
 * Button styles: solid, outline, and ghost/text variants used across
 * the hero, CTA band, cards, and forms.
 */

.btn {
  --btn-fg: var(--color-white);
  --btn-bg: var(--color-primary-600);
  --btn-bg-hover: var(--color-primary-700);
  --btn-border: transparent;

  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2xs);
  padding: 0.9em 1.75em;
  min-height: 44px;
  max-width: 100%;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--btn-border);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-weight: 600;
  font-size: var(--fs-body);
  line-height: 1.2;
  text-align: center;
  /* Pill buttons read best on one line, but at extreme-narrow
     viewports (e.g. inside the 320px mobile nav panel) a long label
     wraps rather than overflowing the page. */
  text-wrap: balance;
  transition: background var(--duration-base) var(--ease-standard),
    color var(--duration-base) var(--ease-standard),
    border-color var(--duration-base) var(--ease-standard),
    transform var(--duration-fast) var(--ease-standard);
}

.btn:hover,
.btn:focus-visible {
  background: var(--btn-bg-hover);
  color: var(--btn-fg);
}

.btn:active {
  transform: translateY(1px);
}

.btn--outline {
  --btn-fg: var(--color-primary-600);
  --btn-bg: transparent;
  --btn-bg-hover: var(--color-primary-600);
  --btn-border: var(--color-primary-600);
}

.btn--outline:hover,
.btn--outline:focus-visible {
  --btn-fg: var(--color-white);
  --btn-border: var(--color-primary-600);
}

.section--dark .btn--outline {
  --btn-fg: var(--color-white);
  --btn-border: var(--color-white);
}

.section--dark .btn--outline:hover,
.section--dark .btn--outline:focus-visible {
  --btn-fg: var(--color-ink);
  --btn-bg-hover: var(--color-white);
  --btn-border: var(--color-white);
}

.btn--on-primary {
  --btn-fg: var(--color-primary-600);
  --btn-bg: var(--color-white);
  --btn-bg-hover: var(--color-bg-muted);
  --btn-border: var(--color-white);
}

/* Light-fill pill used specifically for the hero's secondary button —
   dark text reads better than white on the pale brand secondary. */
.btn--secondary {
  --btn-fg: var(--color-ink);
  --btn-bg: var(--color-secondary);
  --btn-bg-hover: var(--color-white);
  --btn-border: var(--color-secondary);
}

.btn--sm {
  padding: 0.7em 1.4em;
  min-height: 38px;
  font-size: var(--fs-eyebrow);
  text-transform: uppercase;
  letter-spacing: var(--tracking-eyebrow);
}

/* Small teal outline pill used for in-card "Read More" / "Learn More"
   affordances — the mockup shows these as bordered buttons, not plain
   text links. */
.btn--link {
  --btn-fg: var(--color-primary-600);
  --btn-bg: transparent;
  --btn-bg-hover: var(--color-primary-600);
  --btn-border: var(--color-primary-600);
  display: inline-flex;
  align-items: center;
  gap: var(--space-3xs);
  padding: 0.55em 1.25em;
  min-height: 38px;
  border: 1.5px solid var(--btn-border);
  border-radius: var(--radius-pill);
  color: var(--btn-fg);
  font-weight: 600;
  font-size: var(--fs-eyebrow);
  text-transform: uppercase;
  letter-spacing: var(--tracking-eyebrow);
  transition: background var(--duration-base) var(--ease-standard),
    color var(--duration-base) var(--ease-standard);
}

.btn--link:hover,
.btn--link:focus-visible {
  background: var(--btn-bg-hover);
  color: var(--color-white);
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm);
}

.btn-group--spaced {
  margin-top: var(--space-lg);
}